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Diffstat (limited to 'libs/raylib/src/external/dr_wav.h')
| -rw-r--r-- | libs/raylib/src/external/dr_wav.h | 4874 |
1 files changed, 0 insertions, 4874 deletions
diff --git a/libs/raylib/src/external/dr_wav.h b/libs/raylib/src/external/dr_wav.h deleted file mode 100644 index 7c48ac4..0000000 --- a/libs/raylib/src/external/dr_wav.h +++ /dev/null @@ -1,4874 +0,0 @@ -/* -WAV audio loader and writer. Choice of public domain or MIT-0. See license statements at the end of this file. -dr_wav - v0.9.2 - 2019-05-21 - -David Reid - mackron@gmail.com -*/ - -/* -DEPRECATED APIS -=============== -Version 0.9.0 deprecated the per-sample reading and seeking APIs and replaced them with versions that work on the resolution -of a PCM frame instead. For example, given a stereo WAV file, previously you would pass 2 to drwav_read_f32() to read one -PCM frame, whereas now you would pass in 1 to drwav_read_pcm_frames_f32(). The old APIs would return the number of samples -read, whereas now it will return the number of PCM frames. Below is a list of APIs that have been deprecated and their -replacements. - - drwav_read() -> drwav_read_pcm_frames() - drwav_read_s16() -> drwav_read_pcm_frames_s16() - drwav_read_f32() -> drwav_read_pcm_frames_f32() - drwav_read_s32() -> drwav_read_pcm_frames_s32() - drwav_seek_to_sample() -> drwav_seek_to_pcm_frame() - drwav_write() -> drwav_write_pcm_frames() - drwav_open_and_read_s16() -> drwav_open_and_read_pcm_frames_s16() - drwav_open_and_read_f32() -> drwav_open_and_read_pcm_frames_f32() - drwav_open_and_read_s32() -> drwav_open_and_read_pcm_frames_s32() - drwav_open_file_and_read_s16() -> drwav_open_file_and_read_pcm_frames_s16() - drwav_open_file_and_read_f32() -> drwav_open_file_and_read_pcm_frames_f32() - drwav_open_file_and_read_s32() -> drwav_open_file_and_read_pcm_frames_s32() - drwav_open_memory_and_read_s16() -> drwav_open_memory_and_read_pcm_frames_s16() - drwav_open_memory_and_read_f32() -> drwav_open_memory_and_read_pcm_frames_f32() - drwav_open_memory_and_read_s32() -> drwav_open_memory_and_read_pcm_frames_s32() - drwav::totalSampleCount -> drwav::totalPCMFrameCount - -Rationale: - 1) Most programs will want to read in multiples of the channel count which demands a per-frame reading API. Per-sample - reading just adds complexity and maintenance costs for no practical benefit. - 2) This is consistent with my other decoders - dr_flac and dr_mp3. - -These APIs will be removed completely in version 0.10.0. You can continue to use drwav_read_raw() if you need per-sample -reading. -*/ - -/* -USAGE -===== -This is a single-file library. To use it, do something like the following in one .c file. - #define DR_WAV_IMPLEMENTATION - #include "dr_wav.h" - -You can then #include this file in other parts of the program as you would with any other header file. Do something -like the following to read audio data: - - drwav wav; - if (!drwav_init_file(&wav, "my_song.wav")) { - // Error opening WAV file. - } - - drwav_int32* pDecodedInterleavedSamples = malloc(wav.totalPCMFrameCount * wav.channels * sizeof(drwav_int32)); - size_t numberOfSamplesActuallyDecoded = drwav_read_pcm_frames_s32(&wav, wav.totalPCMFrameCount, pDecodedInterleavedSamples); - - ... - - drwav_uninit(&wav); - -You can also use drwav_open() to allocate and initialize the loader for you: - - drwav* pWav = drwav_open_file("my_song.wav"); - if (pWav == NULL) { - // Error opening WAV file. - } - - ... - - drwav_close(pWav); - -If you just want to quickly open and read the audio data in a single operation you can do something like this: - - unsigned int channels; - unsigned int sampleRate; - drwav_uint64 totalPCMFrameCount; - float* pSampleData = drwav_open_file_and_read_pcm_frames_f32("my_song.wav", &channels, &sampleRate, &totalPCMFrameCount); - if (pSampleData == NULL) { - // Error opening and reading WAV file. - } - - ... - - drwav_free(pSampleData); - -The examples above use versions of the API that convert the audio data to a consistent format (32-bit signed PCM, in -this case), but you can still output the audio data in its internal format (see notes below for supported formats): - - size_t samplesRead = drwav_read_pcm_frames(&wav, wav.totalPCMFrameCount, pDecodedInterleavedSamples); - -You can also read the raw bytes of audio data, which could be useful if dr_wav does not have native support for -a particular data format: - - size_t bytesRead = drwav_read_raw(&wav, bytesToRead, pRawDataBuffer); - - -dr_wav can also be used to output WAV files. This does not currently support compressed formats. To use this, look at -drwav_open_write(), drwav_open_file_write(), etc. Use drwav_write_pcm_frames() to write samples, or drwav_write_raw() -to write raw data in the "data" chunk. - - drwav_data_format format; - format.container = drwav_container_riff; // <-- drwav_container_riff = normal WAV files, drwav_container_w64 = Sony Wave64. - format.format = DR_WAVE_FORMAT_PCM; // <-- Any of the DR_WAVE_FORMAT_* codes. - format.channels = 2; - format.sampleRate = 44100; - format.bitsPerSample = 16; - drwav* pWav = drwav_open_file_write("data/recording.wav", &format); - - ... - - drwav_uint64 samplesWritten = drwav_write_pcm_frames(pWav, frameCount, pSamples); - - -dr_wav has seamless support the Sony Wave64 format. The decoder will automatically detect it and it should Just Work -without any manual intervention. - - -OPTIONS -======= -#define these options before including this file. - -#define DR_WAV_NO_CONVERSION_API - Disables conversion APIs such as drwav_read_pcm_frames_f32() and drwav_s16_to_f32(). - -#define DR_WAV_NO_STDIO - Disables drwav_open_file(), drwav_open_file_write(), etc. - - - -QUICK NOTES -=========== -- Samples are always interleaved. -- The default read function does not do any data conversion. Use drwav_read_pcm_frames_f32(), drwav_read_pcm_frames_s32() - and drwav_read_pcm_frames_s16() to read and convert audio data to 32-bit floating point, signed 32-bit integer and - signed 16-bit integer samples respectively. Tested and supported internal formats include the following: - - Unsigned 8-bit PCM - - Signed 12-bit PCM - - Signed 16-bit PCM - - Signed 24-bit PCM - - Signed 32-bit PCM - - IEEE 32-bit floating point - - IEEE 64-bit floating point - - A-law and u-law - - Microsoft ADPCM - - IMA ADPCM (DVI, format code 0x11) -- dr_wav will try to read the WAV file as best it can, even if it's not strictly conformant to the WAV format. -*/ - -#ifndef dr_wav_h -#define dr_wav_h - -#include <stddef.h> - -#if defined(_MSC_VER) && _MSC_VER < 1600 -typedef signed char drwav_int8; -typedef unsigned char drwav_uint8; -typedef signed short drwav_int16; -typedef unsigned short drwav_uint16; -typedef signed int drwav_int32; -typedef unsigned int drwav_uint32; -typedef signed __int64 drwav_int64; -typedef unsigned __int64 drwav_uint64; -#else -#include <stdint.h> -typedef int8_t drwav_int8; -typedef uint8_t drwav_uint8; -typedef int16_t drwav_int16; -typedef uint16_t drwav_uint16; -typedef int32_t drwav_int32; -typedef uint32_t drwav_uint32; -typedef int64_t drwav_int64; -typedef uint64_t drwav_uint64; -#endif -typedef drwav_uint8 drwav_bool8; -typedef drwav_uint32 drwav_bool32; -#define DRWAV_TRUE 1 -#define DRWAV_FALSE 0 - -#ifdef __cplusplus -extern "C" { -#endif - -/* Common data formats. */ -#define DR_WAVE_FORMAT_PCM 0x1 -#define DR_WAVE_FORMAT_ADPCM 0x2 -#define DR_WAVE_FORMAT_IEEE_FLOAT 0x3 -#define DR_WAVE_FORMAT_ALAW 0x6 -#define DR_WAVE_FORMAT_MULAW 0x7 -#define DR_WAVE_FORMAT_DVI_ADPCM 0x11 -#define DR_WAVE_FORMAT_EXTENSIBLE 0xFFFE - -/* Constants. */ -#ifndef DRWAV_MAX_SMPL_LOOPS -#define DRWAV_MAX_SMPL_LOOPS 1 -#endif - -/* Flags to pass into drwav_init_ex(), etc. */ -#define DRWAV_SEQUENTIAL 0x00000001 - -typedef enum -{ - drwav_seek_origin_start, - drwav_seek_origin_current -} drwav_seek_origin; - -typedef enum -{ - drwav_container_riff, - drwav_container_w64 -} drwav_container; - -typedef struct -{ - union - { - drwav_uint8 fourcc[4]; - drwav_uint8 guid[16]; - } id; - - /* The size in bytes of the chunk. */ - drwav_uint64 sizeInBytes; - - /* - RIFF = 2 byte alignment. - W64 = 8 byte alignment. - */ - unsigned int paddingSize; -} drwav_chunk_header; - -/* -Callback for when data is read. Return value is the number of bytes actually read. - -pUserData [in] The user data that was passed to drwav_init(), drwav_open() and family. -pBufferOut [out] The output buffer. -bytesToRead [in] The number of bytes to read. - -Returns the number of bytes actually read. - -A return value of less than bytesToRead indicates the end of the stream. Do _not_ return from this callback until -either the entire bytesToRead is filled or you have reached the end of the stream. -*/ -typedef size_t (* drwav_read_proc)(void* pUserData, void* pBufferOut, size_t bytesToRead); - -/* -Callback for when data is written. Returns value is the number of bytes actually written. - -pUserData [in] The user data that was passed to drwav_init_write(), drwav_open_write() and family. -pData [out] A pointer to the data to write. -bytesToWrite [in] The number of bytes to write. - -Returns the number of bytes actually written. - -If the return value differs from bytesToWrite, it indicates an error. -*/ -typedef size_t (* drwav_write_proc)(void* pUserData, const void* pData, size_t bytesToWrite); - -/* -Callback for when data needs to be seeked. - -pUserData [in] The user data that was passed to drwav_init(), drwav_open() and family. -offset [in] The number of bytes to move, relative to the origin. Will never be negative. -origin [in] The origin of the seek - the current position or the start of the stream. - -Returns whether or not the seek was successful. - -Whether or not it is relative to the beginning or current position is determined by the "origin" parameter which -will be either drwav_seek_origin_start or drwav_seek_origin_current. -*/ -typedef drwav_bool32 (* drwav_seek_proc)(void* pUserData, int offset, drwav_seek_origin origin); - -/* -Callback for when drwav_init_ex/drwav_open_ex finds a chunk. - -pChunkUserData [in] The user data that was passed to the pChunkUserData parameter of drwav_init_ex(), drwav_open_ex() and family. -onRead [in] A pointer to the function to call when reading. -onSeek [in] A pointer to the function to call when seeking. -pReadSeekUserData [in] The user data that was passed to the pReadSeekUserData parameter of drwav_init_ex(), drwav_open_ex() and family. -pChunkHeader [in] A pointer to an object containing basic header information about the chunk. Use this to identify the chunk. - -Returns the number of bytes read + seeked. - -To read data from the chunk, call onRead(), passing in pReadSeekUserData as the first parameter. Do the same -for seeking with onSeek(). The return value must be the total number of bytes you have read _plus_ seeked. - -You must not attempt to read beyond the boundary of the chunk. -*/ -typedef drwav_uint64 (* drwav_chunk_proc)(void* pChunkUserData, drwav_read_proc onRead, drwav_seek_proc onSeek, void* pReadSeekUserData, const drwav_chunk_header* pChunkHeader); - -/* Structure for internal use. Only used for loaders opened with drwav_open_memory(). */ -typedef struct -{ - const drwav_uint8* data; - size_t dataSize; - size_t currentReadPos; -} drwav__memory_stream; - -/* Structure for internal use. Only used for writers opened with drwav_open_memory_write(). */ -typedef struct -{ - void** ppData; - size_t* pDataSize; - size_t dataSize; - size_t dataCapacity; - size_t currentWritePos; -} drwav__memory_stream_write; - -typedef struct -{ - drwav_container container; /* RIFF, W64. */ - drwav_uint32 format; /* DR_WAVE_FORMAT_* */ - drwav_uint32 channels; - drwav_uint32 sampleRate; - drwav_uint32 bitsPerSample; -} drwav_data_format; - -typedef struct -{ - /* - The format tag exactly as specified in the wave file's "fmt" chunk. This can be used by applications - that require support for data formats not natively supported by dr_wav. - */ - drwav_uint16 formatTag; - - /* The number of channels making up the audio data. When this is set to 1 it is mono, 2 is stereo, etc. */ - drwav_uint16 channels; - - /* The sample rate. Usually set to something like 44100. */ - drwav_uint32 sampleRate; - - /* Average bytes per second. You probably don't need this, but it's left here for informational purposes. */ - drwav_uint32 avgBytesPerSec; - - /* Block align. This is equal to the number of channels * bytes per sample. */ - drwav_uint16 blockAlign; - - /* Bits per sample. */ - drwav_uint16 bitsPerSample; - - /* The size of the extended data. Only used internally for validation, but left here for informational purposes. */ - drwav_uint16 extendedSize; - - /* - The number of valid bits per sample. When <formatTag> is equal to WAVE_FORMAT_EXTENSIBLE, <bitsPerSample> - is always rounded up to the nearest multiple of 8. This variable contains information about exactly how - many bits a valid per sample. Mainly used for informational purposes. - */ - drwav_uint16 validBitsPerSample; - - /* The channel mask. Not used at the moment. */ - drwav_uint32 channelMask; - - /* The sub-format, exactly as specified by the wave file. */ - drwav_uint8 subFormat[16]; -} drwav_fmt; - -typedef struct -{ - drwav_uint32 cuePointId; - drwav_uint32 type; - drwav_uint32 start; - drwav_uint32 end; - drwav_uint32 fraction; - drwav_uint32 playCount; -} drwav_smpl_loop; - - typedef struct -{ - drwav_uint32 manufacturer; - drwav_uint32 product; - drwav_uint32 samplePeriod; - drwav_uint32 midiUnityNotes; - drwav_uint32 midiPitchFraction; - drwav_uint32 smpteFormat; - drwav_uint32 smpteOffset; - drwav_uint32 numSampleLoops; - drwav_uint32 samplerData; - drwav_smpl_loop loops[DRWAV_MAX_SMPL_LOOPS]; -} drwav_smpl; - -typedef struct -{ - /* A pointer to the function to call when more data is needed. */ - drwav_read_proc onRead; - - /* A pointer to the function to call when data needs to be written. Only used when the drwav object is opened in write mode. */ - drwav_write_proc onWrite; - - /* A pointer to the function to call when the wav file needs to be seeked. */ - drwav_seek_proc onSeek; - - /* The user data to pass to callbacks. */ - void* pUserData; - - - /* Whether or not the WAV file is formatted as a standard RIFF file or W64. */ - drwav_container container; - - - /* Structure containing format information exactly as specified by the wav file. */ - drwav_fmt fmt; - - /* The sample rate. Will be set to something like 44100. */ - drwav_uint32 sampleRate; - - /* The number of channels. This will be set to 1 for monaural streams, 2 for stereo, etc. */ - drwav_uint16 channels; - - /* The bits per sample. Will be set to something like 16, 24, etc. */ - drwav_uint16 bitsPerSample; - - /* Equal to fmt.formatTag, or the value specified by fmt.subFormat if fmt.formatTag is equal to 65534 (WAVE_FORMAT_EXTENSIBLE). */ - drwav_uint16 translatedFormatTag; - - /* The total number of PCM frames making up the audio data. */ - drwav_uint64 totalPCMFrameCount; - - - /* The size in bytes of the data chunk. */ - drwav_uint64 dataChunkDataSize; - - /* The position in the stream of the first byte of the data chunk. This is used for seeking. */ - drwav_uint64 dataChunkDataPos; - - /* The number of bytes remaining in the data chunk. */ - drwav_uint64 bytesRemaining; - - - /* - Only used in sequential write mode. Keeps track of the desired size of the "data" chunk at the point of initialization time. Always - set to 0 for non-sequential writes and when the drwav object is opened in read mode. Used for validation. - */ - drwav_uint64 dataChunkDataSizeTargetWrite; - - /* Keeps track of whether or not the wav writer was initialized in sequential mode. */ - drwav_bool32 isSequentialWrite; - - - /* smpl chunk. */ - drwav_smpl smpl; - - - /* A hack to avoid a DRWAV_MALLOC() when opening a decoder with drwav_open_memory(). */ - drwav__memory_stream memoryStream; - drwav__memory_stream_write memoryStreamWrite; - - /* Generic data for compressed formats. This data is shared across all block-compressed formats. */ - struct - { - drwav_uint64 iCurrentSample; /* The index of the next sample that will be read by drwav_read_*(). This is used with "totalSampleCount" to ensure we don't read excess samples at the end of the last block. */ - } compressed; - - /* Microsoft ADPCM specific data. */ - struct - { - drwav_uint32 bytesRemainingInBlock; - drwav_uint16 predictor[2]; - drwav_int32 delta[2]; - drwav_int32 cachedSamples[4]; /* Samples are stored in this cache during decoding. */ - drwav_uint32 cachedSampleCount; - drwav_int32 prevSamples[2][2]; /* The previous 2 samples for each channel (2 channels at most). */ - } msadpcm; - - /* IMA ADPCM specific data. */ - struct - { - drwav_uint32 bytesRemainingInBlock; - drwav_int32 predictor[2]; - drwav_int32 stepIndex[2]; - drwav_int32 cachedSamples[16]; /* Samples are stored in this cache during decoding. */ - drwav_uint32 cachedSampleCount; - } ima; - - - drwav_uint64 totalSampleCount; /* <-- DEPRECATED. Will be removed in a future version. */ -} drwav; - - -/* -Initializes a pre-allocated drwav object. - -pWav [out] A pointer to the drwav object being initialized. -onRead [in] The function to call when data needs to be read from the client. -onSeek [in] The function to call when the read position of the client data needs to move. -onChunk [in, optional] The function to call when a chunk is enumerated at initialized time. -pUserData, pReadSeekUserData [in, optional] A pointer to application defined data that will be passed to onRead and onSeek. -pChunkUserData [in, optional] A pointer to application defined data that will be passed to onChunk. -flags [in, optional] A set of flags for controlling how things are loaded. - -Returns true if successful; false otherwise. - -Close the loader with drwav_uninit(). - -This is the lowest level function for initializing a WAV file. You can also use drwav_init_file() and drwav_init_memory() -to open the stream from a file or from a block of memory respectively. - -If you want dr_wav to manage the memory allocation for you, consider using drwav_open() instead. This will allocate -a drwav object on the heap and return a pointer to it. - -Possible values for flags: - DRWAV_SEQUENTIAL: Never perform a backwards seek while loading. This disables the chunk callback and will cause this function - to return as soon as the data chunk is found. Any chunks after the data chunk will be ignored. - -drwav_init() is equivalent to "drwav_init_ex(pWav, onRead, onSeek, NULL, pUserData, NULL, 0);". - -The onChunk callback is not called for the WAVE or FMT chunks. The contents of the FMT chunk can be read from pWav->fmt -after the function returns. - -See also: drwav_init_file(), drwav_init_memory(), drwav_uninit() -*/ -drwav_bool32 drwav_init(drwav* pWav, drwav_read_proc onRead, drwav_seek_proc onSeek, void* pUserData); -drwav_bool32 drwav_init_ex(drwav* pWav, drwav_read_proc onRead, drwav_seek_proc onSeek, drwav_chunk_proc onChunk, void* pReadSeekUserData, void* pChunkUserData, drwav_uint32 flags); - -/* -Initializes a pre-allocated drwav object for writing. - -onWrite [in] The function to call when data needs to be written. -onSeek [in] The function to call when the write position needs to move. -pUserData [in, optional] A pointer to application defined data that will be passed to onWrite and onSeek. - -Returns true if successful; false otherwise. - -Close the writer with drwav_uninit(). - -This is the lowest level function for initializing a WAV file. You can also use drwav_init_file() and drwav_init_memory() -to open the stream from a file or from a block of memory respectively. - -If the total sample count is known, you can use drwav_init_write_sequential(). This avoids the need for dr_wav to perform -a post-processing step for storing the total sample count and the size of the data chunk which requires a backwards seek. - -If you want dr_wav to manage the memory allocation for you, consider using drwav_open() instead. This will allocate -a drwav object on the heap and return a pointer to it. - -See also: drwav_init_file_write(), drwav_init_memory_write(), drwav_uninit() -*/ -drwav_bool32 drwav_init_write(drwav* pWav, const drwav_data_format* pFormat, drwav_write_proc onWrite, drwav_seek_proc onSeek, void* pUserData); -drwav_bool32 drwav_init_write_sequential(drwav* pWav, const drwav_data_format* pFormat, drwav_uint64 totalSampleCount, drwav_write_proc onWrite, void* pUserData); - -/* -Uninitializes the given drwav object. - -Use this only for objects initialized with drwav_init(). -*/ -void drwav_uninit(drwav* pWav); - - -/* -Opens a wav file using the given callbacks. - -onRead [in] The function to call when data needs to be read from the client. -onSeek [in] The function to call when the read position of the client data needs to move. -pUserData [in, optional] A pointer to application defined data that will be passed to onRead and onSeek. - -Returns null on error. - -Close the loader with drwav_close(). - -You can also use drwav_open_file() and drwav_open_memory() to open the stream from a file or from a block of -memory respectively. - -This is different from drwav_init() in that it will allocate the drwav object for you via DRWAV_MALLOC() before -initializing it. - -See also: drwav_init(), drwav_open_file(), drwav_open_memory(), drwav_close() -*/ -drwav* drwav_open(drwav_read_proc onRead, drwav_seek_proc onSeek, void* pUserData); -drwav* drwav_open_ex(drwav_read_proc onRead, drwav_seek_proc onSeek, drwav_chunk_proc onChunk, void* pReadSeekUserData, void* pChunkUserData, drwav_uint32 flags); - -/* -Opens a wav file for writing using the given callbacks. - -onWrite [in] The function to call when data needs to be written. -onSeek [in] The function to call when the write position needs to move. -pUserData [in, optional] A pointer to application defined data that will be passed to onWrite and onSeek. - -Returns null on error. - -Close the loader with drwav_close(). - -You can also use drwav_open_file_write() and drwav_open_memory_write() to open the stream from a file or from a block -of memory respectively. - -This is different from drwav_init_write() in that it will allocate the drwav object for you via DRWAV_MALLOC() before -initializing it. - -See also: drwav_open_file_write(), drwav_open_memory_write(), drwav_close() -*/ -drwav* drwav_open_write(const drwav_data_format* pFormat, drwav_write_proc onWrite, drwav_seek_proc onSeek, void* pUserData); -drwav* drwav_open_write_sequential(const drwav_data_format* pFormat, drwav_uint64 totalSampleCount, drwav_write_proc onWrite, void* pUserData); - -/* -Uninitializes and deletes the the given drwav object. - -Use this only for objects created with drwav_open(). -*/ -void drwav_close(drwav* pWav); - - -/* -Reads raw audio data. - -This is the lowest level function for reading audio data. It simply reads the given number of -bytes of the raw internal sample data. - -Consider using drwav_read_pcm_frames_s16(), drwav_read_pcm_frames_s32() or drwav_read_pcm_frames_f32() for -reading sample data in a consistent format. - -Returns the number of bytes actually read. -*/ -size_t drwav_read_raw(drwav* pWav, size_t bytesToRead, void* pBufferOut); - -/* -Reads a chunk of audio data in the native internal format. - -This is typically the most efficient way to retrieve audio data, but it does not do any format -conversions which means you'll need to convert the data manually if required. - -If the return value is less than <framesToRead> it means the end of the file has been reached or -you have requested more samples than can possibly fit in the output buffer. - -This function will only work when sample data is of a fixed size and uncompressed. If you are -using a compressed format consider using drwav_read_raw() or drwav_read_pcm_frames_s16/s32/f32/etc(). -*/ -drwav_uint64 drwav_read_pcm_frames(drwav* pWav, drwav_uint64 framesToRead, void* pBufferOut); - -/* -Seeks to the given PCM frame. - -Returns true if successful; false otherwise. -*/ -drwav_bool32 drwav_seek_to_pcm_frame(drwav* pWav, drwav_uint64 targetFrameIndex); - - -/* -Writes raw audio data. - -Returns the number of bytes actually written. If this differs from bytesToWrite, it indicates an error. -*/ -size_t drwav_write_raw(drwav* pWav, size_t bytesToWrite, const void* pData); - -/* -Writes PCM frames. - -Returns the number of PCM frames written. -*/ -drwav_uint64 drwav_write_pcm_frames(drwav* pWav, drwav_uint64 framesToWrite, const void* pData); - - -/* Conversion Utilities */ -#ifndef DR_WAV_NO_CONVERSION_API - -/* -Reads a chunk of audio data and converts it to signed 16-bit PCM samples. - -Returns the number of PCM frames actually read. - -If the return value is less than <framesToRead> it means the end of the file has been reached. -*/ -drwav_uint64 drwav_read_pcm_frames_s16(drwav* pWav, drwav_uint64 framesToRead, drwav_int16* pBufferOut); - -/* Low-level function for converting unsigned 8-bit PCM samples to signed 16-bit PCM samples. */ -void drwav_u8_to_s16(drwav_int16* pOut, const drwav_uint8* pIn, size_t sampleCount); - -/* Low-level function for converting signed 24-bit PCM samples to signed 16-bit PCM samples. */ -void drwav_s24_to_s16(drwav_int16* pOut, const drwav_uint8* pIn, size_t sampleCount); - -/* Low-level function for converting signed 32-bit PCM samples to signed 16-bit PCM samples. */ -void drwav_s32_to_s16(drwav_int16* pOut, const drwav_int32* pIn, size_t sampleCount); - -/* Low-level function for converting IEEE 32-bit floating point samples to signed 16-bit PCM samples. */ -void drwav_f32_to_s16(drwav_int16* pOut, const float* pIn, size_t sampleCount); - -/* Low-level function for converting IEEE 64-bit floating point samples to signed 16-bit PCM samples. */ -void drwav_f64_to_s16(drwav_int16* pOut, const double* pIn, size_t sampleCount); - -/* Low-level function for converting A-law samples to signed 16-bit PCM samples. */ -void drwav_alaw_to_s16(drwav_int16* pOut, const drwav_uint8* pIn, size_t sampleCount); - -/* Low-level function for converting u-law samples to signed 16-bit PCM samples. */ -void drwav_mulaw_to_s16(drwav_int16* pOut, const drwav_uint8* pIn, size_t sampleCount); - - -/* -Reads a chunk of audio data and converts it to IEEE 32-bit floating point samples. - -Returns the number of PCM frames actually read. - -If the return value is less than <framesToRead> it means the end of the file has been reached. -*/ -drwav_uint64 drwav_read_pcm_frames_f32(drwav* pWav, drwav_uint64 framesToRead, float* pBufferOut); - -/* Low-level function for converting unsigned 8-bit PCM samples to IEEE 32-bit floating point samples. */ -void drwav_u8_to_f32(float* pOut, const drwav_uint8* pIn, size_t sampleCount); - -/* Low-level function for converting signed 16-bit PCM samples to IEEE 32-bit floating point samples. */ -void drwav_s16_to_f32(float* pOut, const drwav_int16* pIn, size_t sampleCount); - -/* Low-level function for converting signed 24-bit PCM samples to IEEE 32-bit floating point samples. */ -void drwav_s24_to_f32(float* pOut, const drwav_uint8* pIn, size_t sampleCount); - -/* Low-level function for converting signed 32-bit PCM samples to IEEE 32-bit floating point samples. */ -void drwav_s32_to_f32(float* pOut, const drwav_int32* pIn, size_t sampleCount); - -/* Low-level function for converting IEEE 64-bit floating point samples to IEEE 32-bit floating point samples. */ -void drwav_f64_to_f32(float* pOut, const double* pIn, size_t sampleCount); - -/* Low-level function for converting A-law samples to IEEE 32-bit floating point samples. */ -void drwav_alaw_to_f32(float* pOut, const drwav_uint8* pIn, size_t sampleCount); - -/* Low-level function for converting u-law samples to IEEE 32-bit floating point samples. */ -void drwav_mulaw_to_f32(float* pOut, const drwav_uint8* pIn, size_t sampleCount); - - -/* -Reads a chunk of audio data and converts it to signed 32-bit PCM samples. - -Returns the number of PCM frames actually read. - -If the return value is less than <framesToRead> it means the end of the file has been reached. -*/ -drwav_uint64 drwav_read_pcm_frames_s32(drwav* pWav, drwav_uint64 framesToRead, drwav_int32* pBufferOut); - -/* Low-level function for converting unsigned 8-bit PCM samples to signed 32-bit PCM samples. */ -void drwav_u8_to_s32(drwav_int32* pOut, const drwav_uint8* pIn, size_t sampleCount); - -/* Low-level function for converting signed 16-bit PCM samples to signed 32-bit PCM samples. */ -void drwav_s16_to_s32(drwav_int32* pOut, const drwav_int16* pIn, size_t sampleCount); - -/* Low-level function for converting signed 24-bit PCM samples to signed 32-bit PCM samples. */ -void drwav_s24_to_s32(drwav_int32* pOut, const drwav_uint8* pIn, size_t sampleCount); - -/* Low-level function for converting IEEE 32-bit floating point samples to signed 32-bit PCM samples. */ -void drwav_f32_to_s32(drwav_int32* pOut, const float* pIn, size_t sampleCount); - -/* Low-level function for converting IEEE 64-bit floating point samples to signed 32-bit PCM samples. */ -void drwav_f64_to_s32(drwav_int32* pOut, const double* pIn, size_t sampleCount); - -/* Low-level function for converting A-law samples to signed 32-bit PCM samples. */ -void drwav_alaw_to_s32(drwav_int32* pOut, const drwav_uint8* pIn, size_t sampleCount); - -/* Low-level function for converting u-law samples to signed 32-bit PCM samples. */ -void drwav_mulaw_to_s32(drwav_int32* pOut, const drwav_uint8* pIn, size_t sampleCount); - -#endif /* DR_WAV_NO_CONVERSION_API */ - - -/* High-Level Convenience Helpers */ - -#ifndef DR_WAV_NO_STDIO -/* -Helper for initializing a wave file using stdio. - -This holds the internal FILE object until drwav_uninit() is called. Keep this in mind if you're caching drwav -objects because the operating system may restrict the number of file handles an application can have open at -any given time. -*/ -drwav_bool32 drwav_init_file(drwav* pWav, const char* filename); -drwav_bool32 drwav_init_file_ex(drwav* pWav, const char* filename, drwav_chunk_proc onChunk, void* pChunkUserData, drwav_uint32 flags); - -/* -Helper for initializing a wave file for writing using stdio. - -This holds the internal FILE object until drwav_uninit() is called. Keep this in mind if you're caching drwav -objects because the operating system may restrict the number of file handles an application can have open at -any given time. -*/ -drwav_bool32 drwav_init_file_write(drwav* pWav, const char* filename, const drwav_data_format* pFormat); -drwav_bool32 drwav_init_file_write_sequential(drwav* pWav, const char* filename, const drwav_data_format* pFormat, drwav_uint64 totalSampleCount); - -/* -Helper for opening a wave file using stdio. - -This holds the internal FILE object until drwav_close() is called. Keep this in mind if you're caching drwav -objects because the operating system may restrict the number of file handles an application can have open at -any given time. -*/ -drwav* drwav_open_file(const char* filename); -drwav* drwav_open_file_ex(const char* filename, drwav_chunk_proc onChunk, void* pChunkUserData, drwav_uint32 flags); - -/* -Helper for opening a wave file for writing using stdio. - -This holds the internal FILE object until drwav_close() is called. Keep this in mind if you're caching drwav -objects because the operating system may restrict the number of file handles an application can have open at -any given time. -*/ -drwav* drwav_open_file_write(const char* filename, const drwav_data_format* pFormat); -drwav* drwav_open_file_write_sequential(const char* filename, const drwav_data_format* pFormat, drwav_uint64 totalSampleCount); - -#endif /* DR_WAV_NO_STDIO */ - -/* -Helper for initializing a loader from a pre-allocated memory buffer. - -This does not create a copy of the data. It is up to the application to ensure the buffer remains valid for -the lifetime of the drwav object. - -The buffer should contain the contents of the entire wave file, not just the sample data. -*/ -drwav_bool32 drwav_init_memory(drwav* pWav, const void* data, size_t dataSize); -drwav_bool32 drwav_init_memory_ex(drwav* pWav, const void* data, size_t dataSize, drwav_chunk_proc onChunk, void* pChunkUserData, drwav_uint32 flags); - -/* -Helper for initializing a writer which outputs data to a memory buffer. - -dr_wav will manage the memory allocations, however it is up to the caller to free the data with drwav_free(). - -The buffer will remain allocated even after drwav_uninit() is called. Indeed, the buffer should not be -considered valid until after drwav_uninit() has been called anyway. -*/ -drwav_bool32 drwav_init_memory_write(drwav* pWav, void** ppData, size_t* pDataSize, const drwav_data_format* pFormat); -drwav_bool32 drwav_init_memory_write_sequential(drwav* pWav, void** ppData, size_t* pDataSize, const drwav_data_format* pFormat, drwav_uint64 totalSampleCount); - -/* -Helper for opening a loader from a pre-allocated memory buffer. - -This does not create a copy of the data. It is up to the application to ensure the buffer remains valid for -the lifetime of the drwav object. - -The buffer should contain the contents of the entire wave file, not just the sample data. -*/ -drwav* drwav_open_memory(const void* data, size_t dataSize); -drwav* drwav_open_memory_ex(const void* data, size_t dataSize, drwav_chunk_proc onChunk, void* pChunkUserData, drwav_uint32 flags); - -/* -Helper for opening a writer which outputs data to a memory buffer. - -dr_wav will manage the memory allocations, however it is up to the caller to free the data with drwav_free(). - -The buffer will remain allocated even after drwav_close() is called. Indeed, the buffer should not be -considered valid until after drwav_close() has been called anyway. -*/ -drwav* drwav_open_memory_write(void** ppData, size_t* pDataSize, const drwav_data_format* pFormat); -drwav* drwav_open_memory_write_sequential(void** ppData, size_t* pDataSize, const drwav_data_format* pFormat, drwav_uint64 totalSampleCount); - - -#ifndef DR_WAV_NO_CONVERSION_API -/* Opens and reads a wav file in a single operation. */ -drwav_int16* drwav_open_and_read_pcm_frames_s16(drwav_read_proc onRead, drwav_seek_proc onSeek, void* pUserData, unsigned int* channels, unsigned int* sampleRate, drwav_uint64* totalFrameCount); -float* drwav_open_and_read_pcm_frames_f32(drwav_read_proc onRead, drwav_seek_proc onSeek, void* pUserData, unsigned int* channels, unsigned int* sampleRate, drwav_uint64* totalFrameCount); -drwav_int32* drwav_open_and_read_pcm_frames_s32(drwav_read_proc onRead, drwav_seek_proc onSeek, void* pUserData, unsigned int* channels, unsigned int* sampleRate, drwav_uint64* totalFrameCount); -#ifndef DR_WAV_NO_STDIO -/* Opens and decodes a wav file in a single operation. */ -drwav_int16* drwav_open_file_and_read_pcm_frames_s16(const char* filename, unsigned int* channels, unsigned int* sampleRate, drwav_uint64* totalFrameCount); -float* drwav_open_file_and_read_pcm_frames_f32(const char* filename, unsigned int* channels, unsigned int* sampleRate, drwav_uint64* totalFrameCount); -drwav_int32* drwav_open_file_and_read_pcm_frames_s32(const char* filename, unsigned int* channels, unsigned int* sampleRate, drwav_uint64* totalFrameCount); -#endif - -/* Opens and decodes a wav file from a block of memory in a single operation. */ -drwav_int16* drwav_open_memory_and_read_pcm_frames_s16(const void* data, size_t dataSize, unsigned int* channels, unsigned int* sampleRate, drwav_uint64* totalFrameCount); -float* drwav_open_memory_and_read_pcm_frames_f32(const void* data, size_t dataSize, unsigned int* channels, unsigned int* sampleRate, drwav_uint64* totalFrameCount); -drwav_int32* drwav_open_memory_and_read_pcm_frames_s32(const void* data, size_t dataSize, unsigned int* channels, unsigned int* sampleRate, drwav_uint64* totalFrameCount); -#endif - -/* Frees data that was allocated internally by dr_wav. */ -void drwav_free(void* pDataReturnedByOpenAndRead); - - -/* DEPRECATED APIS */ -drwav_uint64 drwav_read(drwav* pWav, drwav_uint64 samplesToRead, void* pBufferOut); -drwav_uint64 drwav_read_s16(drwav* pWav, drwav_uint64 samplesToRead, drwav_int16* pBufferOut); -drwav_uint64 drwav_read_f32(drwav* pWav, drwav_uint64 samplesToRead, float* pBufferOut); -drwav_uint64 drwav_read_s32(drwav* pWav, drwav_uint64 samplesToRead, drwav_int32* pBufferOut); -drwav_bool32 drwav_seek_to_sample(drwav* pWav, drwav_uint64 sample); -drwav_uint64 drwav_write(drwav* pWav, drwav_uint64 samplesToWrite, const void* pData); -#ifndef DR_WAV_NO_CONVERSION_API -drwav_int16* drwav_open_and_read_s16(drwav_read_proc onRead, drwav_seek_proc onSeek, void* pUserData, unsigned int* channels, unsigned int* sampleRate, drwav_uint64* totalSampleCount); -float* drwav_open_and_read_f32(drwav_read_proc onRead, drwav_seek_proc onSeek, void* pUserData, unsigned int* channels, unsigned int* sampleRate, drwav_uint64* totalSampleCount); -drwav_int32* drwav_open_and_read_s32(drwav_read_proc onRead, drwav_seek_proc onSeek, void* pUserData, unsigned int* channels, unsigned int* sampleRate, drwav_uint64* totalSampleCount); -#ifndef DR_WAV_NO_STDIO -drwav_int16* drwav_open_memory_and_read_s16(const void* data, size_t dataSize, unsigned int* channels, unsigned int* sampleRate, drwav_uint64* totalSampleCount); -float* drwav_open_file_and_read_f32(const char* filename, unsigned int* channels, unsigned int* sampleRate, drwav_uint64* totalSampleCount); -drwav_int32* drwav_open_file_and_read_s32(const char* filename, unsigned int* channels, unsigned int* sampleRate, drwav_uint64* totalSampleCount); -#endif -drwav_int16* drwav_open_memory_and_read_s16(const void* data, size_t dataSize, unsigned int* channels, unsigned int* sampleRate, drwav_uint64* totalSampleCount); -float* drwav_open_memory_and_read_f32(const void* data, size_t dataSize, unsigned int* channels, unsigned int* sampleRate, drwav_uint64* totalSampleCount); -drwav_int32* drwav_open_memory_and_read_s32(const void* data, size_t dataSize, unsigned int* channels, unsigned int* sampleRate, drwav_uint64* totalSampleCount); -#endif - - -#ifdef __cplusplus -} -#endif -#endif /* dr_wav_h */ - - -/************************************************************************************************************************************************************ - ************************************************************************************************************************************************************ - - IMPLEMENTATION - - ************************************************************************************************************************************************************ - ************************************************************************************************************************************************************/ -#ifdef DR_WAV_IMPLEMENTATION -#include <stdlib.h> -#include <string.h> /* For memcpy(), memset() */ -#include <limits.h> /* For INT_MAX */ - -#ifndef DR_WAV_NO_STDIO -#include <stdio.h> -#endif - -/* Standard library stuff. */ -#ifndef DRWAV_ASSERT -#include <assert.h> -#define DRWAV_ASSERT(expression) assert(expression) -#endif -#ifndef DRWAV_MALLOC -#define DRWAV_MALLOC(sz) malloc((sz)) -#endif -#ifndef DRWAV_REALLOC -#define DRWAV_REALLOC(p, sz) realloc((p), (sz)) -#endif -#ifndef DRWAV_FREE -#define DRWAV_FREE(p) free((p)) -#endif -#ifndef DRWAV_COPY_MEMORY -#define DRWAV_COPY_MEMORY(dst, src, sz) memcpy((dst), (src), (sz)) -#endif -#ifndef DRWAV_ZERO_MEMORY -#define DRWAV_ZERO_MEMORY(p, sz) memset((p), 0, (sz)) -#endif - -#define drwav_countof(x) (sizeof(x) / sizeof(x[0])) -#define drwav_align(x, a) ((((x) + (a) - 1) / (a)) * (a)) -#define drwav_min(a, b) (((a) < (b)) ? (a) : (b)) -#define drwav_max(a, b) (((a) > (b)) ? (a) : (b)) -#define drwav_clamp(x, lo, hi) (drwav_max((lo), drwav_min((hi), (x)))) - -#define drwav_assert DRWAV_ASSERT -#define drwav_copy_memory DRWAV_COPY_MEMORY -#define drwav_zero_memory DRWAV_ZERO_MEMORY - -typedef drwav_int32 drwav_result; -#define DRWAV_SUCCESS 0 -#define DRWAV_ERROR -1 -#define DRWAV_INVALID_ARGS -2 -#define DRWAV_INVALID_OPERATION -3 -#define DRWAV_INVALID_FILE -100 -#define DRWAV_EOF -101 - -#define DRWAV_MAX_SIMD_VECTOR_SIZE 64 /* 64 for AVX-512 in the future. */ - -#ifdef _MSC_VER -#define DRWAV_INLINE __forceinline -#else -#ifdef __GNUC__ -#define DRWAV_INLINE __inline__ __attribute__((always_inline)) -#else -#define DRWAV_INLINE -#endif -#endif - -#if defined(SIZE_MAX) - #define DRWAV_SIZE_MAX SIZE_MAX -#else - #if defined(_WIN64) || defined(_LP64) || defined(__LP64__) - #define DRWAV_SIZE_MAX ((drwav_uint64)0xFFFFFFFFFFFFFFFF) - #else - #define DRWAV_SIZE_MAX 0xFFFFFFFF - #endif -#endif - -static const drwav_uint8 drwavGUID_W64_RIFF[16] = {0x72,0x69,0x66,0x66, 0x2E,0x91, 0xCF,0x11, 0xA5,0xD6, 0x28,0xDB,0x04,0xC1,0x00,0x00}; /* 66666972-912E-11CF-A5D6-28DB04C10000 */ -static const drwav_uint8 drwavGUID_W64_WAVE[16] = {0x77,0x61,0x76,0x65, 0xF3,0xAC, 0xD3,0x11, 0x8C,0xD1, 0x00,0xC0,0x4F,0x8E,0xDB,0x8A}; /* 65766177-ACF3-11D3-8CD1-00C04F8EDB8A */ -static const drwav_uint8 drwavGUID_W64_JUNK[16] = {0x6A,0x75,0x6E,0x6B, 0xF3,0xAC, 0xD3,0x11, 0x8C,0xD1, 0x00,0xC0,0x4F,0x8E,0xDB,0x8A}; /* 6B6E756A-ACF3-11D3-8CD1-00C04F8EDB8A */ -static const drwav_uint8 drwavGUID_W64_FMT [16] = {0x66,0x6D,0x74,0x20, 0xF3,0xAC, 0xD3,0x11, 0x8C,0xD1, 0x00,0xC0,0x4F,0x8E,0xDB,0x8A}; /* 20746D66-ACF3-11D3-8CD1-00C04F8EDB8A */ -static const drwav_uint8 drwavGUID_W64_FACT[16] = {0x66,0x61,0x63,0x74, 0xF3,0xAC, 0xD3,0x11, 0x8C,0xD1, 0x00,0xC0,0x4F,0x8E,0xDB,0x8A}; /* 74636166-ACF3-11D3-8CD1-00C04F8EDB8A */ -static const drwav_uint8 drwavGUID_W64_DATA[16] = {0x64,0x61,0x74,0x61, 0xF3,0xAC, 0xD3,0x11, 0x8C,0xD1, 0x00,0xC0,0x4F,0x8E,0xDB,0x8A}; /* 61746164-ACF3-11D3-8CD1-00C04F8EDB8A */ -static const drwav_uint8 drwavGUID_W64_SMPL[16] = {0x73,0x6D,0x70,0x6C, 0xF3,0xAC, 0xD3,0x11, 0x8C,0xD1, 0x00,0xC0,0x4F,0x8E,0xDB,0x8A}; /* 6C706D73-ACF3-11D3-8CD1-00C04F8EDB8A */ - -static DRWAV_INLINE drwav_bool32 drwav__guid_equal(const drwav_uint8 a[16], const drwav_uint8 b[16]) -{ - const drwav_uint32* a32 = (const drwav_uint32*)a; - const drwav_uint32* b32 = (const drwav_uint32*)b; - - return - a32[0] == b32[0] && - a32[1] == b32[1] && - a32[2] == b32[2] && - a32[3] == b32[3]; -} - -static DRWAV_INLINE drwav_bool32 drwav__fourcc_equal(const unsigned char* a, const char* b) -{ - return - a[0] == b[0] && - a[1] == b[1] && - a[2] == b[2] && - a[3] == b[3]; -} - - - -static DRWAV_INLINE int drwav__is_little_endian() -{ - int n = 1; - return (*(char*)&n) == 1; -} - -static DRWAV_INLINE unsigned short drwav__bytes_to_u16(const unsigned char* data) -{ - return (data[0] << 0) | (data[1] << 8); -} - -static DRWAV_INLINE short drwav__bytes_to_s16(const unsigned char* data) -{ - return (short)drwav__bytes_to_u16(data); -} - -static DRWAV_INLINE unsigned int drwav__bytes_to_u32(const unsigned char* data) -{ - return (data[0] << 0) | (data[1] << 8) | (data[2] << 16) | (data[3] << 24); -} - -static DRWAV_INLINE drwav_uint64 drwav__bytes_to_u64(const unsigned char* data) -{ - return - ((drwav_uint64)data[0] << 0) | ((drwav_uint64)data[1] << 8) | ((drwav_uint64)data[2] << 16) | ((drwav_uint64)data[3] << 24) | - ((drwav_uint64)data[4] << 32) | ((drwav_uint64)data[5] << 40) | ((drwav_uint64)data[6] << 48) | ((drwav_uint64)data[7] << 56); -} - -static DRWAV_INLINE void drwav__bytes_to_guid(const unsigned char* data, drwav_uint8* guid) -{ - int i; - for (i = 0; i < 16; ++i) { - guid[i] = data[i]; - } -} - - -static DRWAV_INLINE drwav_bool32 drwav__is_compressed_format_tag(drwav_uint16 formatTag) -{ - return - formatTag == DR_WAVE_FORMAT_ADPCM || - formatTag == DR_WAVE_FORMAT_DVI_ADPCM; -} - -drwav_uint64 drwav_read_s16__msadpcm(drwav* pWav, drwav_uint64 samplesToRead, drwav_int16* pBufferOut); -drwav_uint64 drwav_read_s16__ima(drwav* pWav, drwav_uint64 samplesToRead, drwav_int16* pBufferOut); -drwav_bool32 drwav_init_write__internal(drwav* pWav, const drwav_data_format* pFormat, drwav_uint64 totalSampleCount, drwav_bool32 isSequential, drwav_write_proc onWrite, drwav_seek_proc onSeek, void* pUserData); -drwav* drwav_open_write__internal(const drwav_data_format* pFormat, drwav_uint64 totalSampleCount, drwav_bool32 isSequential, drwav_write_proc onWrite, drwav_seek_proc onSeek, void* pUserData); - -static drwav_result drwav__read_chunk_header(drwav_read_proc onRead, void* pUserData, drwav_container container, drwav_uint64* pRunningBytesReadOut, drwav_chunk_header* pHeaderOut) -{ - if (container == drwav_container_riff) { - unsigned char sizeInBytes[4]; - - if (onRead(pUserData, pHeaderOut->id.fourcc, 4) != 4) { - return DRWAV_EOF; - } - - if (onRead(pUserData, sizeInBytes, 4) != 4) { - return DRWAV_INVALID_FILE; - } - - pHeaderOut->sizeInBytes = drwav__bytes_to_u32(sizeInBytes); - pHeaderOut->paddingSize = (unsigned int)(pHeaderOut->sizeInBytes % 2); - *pRunningBytesReadOut += 8; - } else { - unsigned char sizeInBytes[8]; - - if (onRead(pUserData, pHeaderOut->id.guid, 16) != 16) { - return DRWAV_EOF; - } - - if (onRead(pUserData, sizeInBytes, 8) != 8) { - return DRWAV_INVALID_FILE; - } - - pHeaderOut->sizeInBytes = drwav__bytes_to_u64(sizeInBytes) - 24; /* <-- Subtract 24 because w64 includes the size of the header. */ - pHeaderOut->paddingSize = (unsigned int)(pHeaderOut->sizeInBytes % 8); - *pRunningBytesReadOut += 24; - } - - return DRWAV_SUCCESS; -} - -static drwav_bool32 drwav__seek_forward(drwav_seek_proc onSeek, drwav_uint64 offset, void* pUserData) -{ - drwav_uint64 bytesRemainingToSeek = offset; - while (bytesRemainingToSeek > 0) { - if (bytesRemainingToSeek > 0x7FFFFFFF) { - if (!onSeek(pUserData, 0x7FFFFFFF, drwav_seek_origin_current)) { - return DRWAV_FALSE; - } - bytesRemainingToSeek -= 0x7FFFFFFF; - } else { - if (!onSeek(pUserData, (int)bytesRemainingToSeek, drwav_seek_origin_current)) { - return DRWAV_FALSE; - } - bytesRemainingToSeek = 0; - } - } - - return DRWAV_TRUE; -} - -static drwav_bool32 drwav__seek_from_start(drwav_seek_proc onSeek, drwav_uint64 offset, void* pUserData) -{ - if (offset <= 0x7FFFFFFF) { - return onSeek(pUserData, (int)offset, drwav_seek_origin_start); - } - - /* Larger than 32-bit seek. */ - if (!onSeek(pUserData, 0x7FFFFFFF, drwav_seek_origin_start)) { - return DRWAV_FALSE; - } - offset -= 0x7FFFFFFF; - - for (;;) { - if (offset <= 0x7FFFFFFF) { - return onSeek(pUserData, (int)offset, drwav_seek_origin_current); - } - - if (!onSeek(pUserData, 0x7FFFFFFF, drwav_seek_origin_current)) { - return DRWAV_FALSE; - } - offset -= 0x7FFFFFFF; - } - - /* Should never get here. */ - /*return DRWAV_TRUE; */ -} - - -static drwav_bool32 drwav__read_fmt(drwav_read_proc onRead, drwav_seek_proc onSeek, void* pUserData, drwav_container container, drwav_uint64* pRunningBytesReadOut, drwav_fmt* fmtOut) -{ - drwav_chunk_header header; - unsigned char fmt[16]; - - if (drwav__read_chunk_header(onRead, pUserData, container, pRunningBytesReadOut, &header) != DRWAV_SUCCESS) { - return DRWAV_FALSE; - } - - - /* Skip non-fmt chunks. */ - while ((container == drwav_container_riff && !drwav__fourcc_equal(header.id.fourcc, "fmt ")) || (container == drwav_container_w64 && !drwav__guid_equal(header.id.guid, drwavGUID_W64_FMT))) { - if (!drwav__seek_forward(onSeek, header.sizeInBytes + header.paddingSize, pUserData)) { - return DRWAV_FALSE; - } - *pRunningBytesReadOut += header.sizeInBytes + header.paddingSize; - - /* Try the next header. */ - if (drwav__read_chunk_header(onRead, pUserData, container, pRunningBytesReadOut, &header) != DRWAV_SUCCESS) { - return DRWAV_FALSE; - } - } - - - /* Validation. */ - if (container == drwav_container_riff) { - if (!drwav__fourcc_equal(header.id.fourcc, "fmt ")) { - return DRWAV_FALSE; - } - } else { - if (!drwav__guid_equal(header.id.guid, drwavGUID_W64_FMT)) { - return DRWAV_FALSE; - } - } - - - if (onRead(pUserData, fmt, sizeof(fmt)) != sizeof(fmt)) { - return DRWAV_FALSE; - } - *pRunningBytesReadOut += sizeof(fmt); - - fmtOut->formatTag = drwav__bytes_to_u16(fmt + 0); - fmtOut->channels = drwav__bytes_to_u16(fmt + 2); - fmtOut->sampleRate = drwav__bytes_to_u32(fmt + 4); - fmtOut->avgBytesPerSec = drwav__bytes_to_u32(fmt + 8); - fmtOut->blockAlign = drwav__bytes_to_u16(fmt + 12); - fmtOut->bitsPerSample = drwav__bytes_to_u16(fmt + 14); - - fmtOut->extendedSize = 0; - fmtOut->validBitsPerSample = 0; - fmtOut->channelMask = 0; - memset(fmtOut->subFormat, 0, sizeof(fmtOut->subFormat)); - - if (header.sizeInBytes > 16) { - unsigned char fmt_cbSize[2]; - int bytesReadSoFar = 0; - - if (onRead(pUserData, fmt_cbSize, sizeof(fmt_cbSize)) != sizeof(fmt_cbSize)) { - return DRWAV_FALSE; /* Expecting more data. */ - } - *pRunningBytesReadOut += sizeof(fmt_cbSize); - - bytesReadSoFar = 18; - - fmtOut->extendedSize = drwav__bytes_to_u16(fmt_cbSize); - if (fmtOut->extendedSize > 0) { - /* Simple validation. */ - if (fmtOut->formatTag == DR_WAVE_FORMAT_EXTENSIBLE) { - if (fmtOut->extendedSize != 22) { - return DRWAV_FALSE; - } - } - - if (fmtOut->formatTag == DR_WAVE_FORMAT_EXTENSIBLE) { - unsigned char fmtext[22]; - if (onRead(pUserData, fmtext, fmtOut->extendedSize) != fmtOut->extendedSize) { - return DRWAV_FALSE; /* Expecting more data. */ - } - - fmtOut->validBitsPerSample = drwav__bytes_to_u16(fmtext + 0); - fmtOut->channelMask = drwav__bytes_to_u32(fmtext + 2); - drwav__bytes_to_guid(fmtext + 6, fmtOut->subFormat); - } else { - if (!onSeek(pUserData, fmtOut->extendedSize, drwav_seek_origin_current)) { - return DRWAV_FALSE; - } - } - *pRunningBytesReadOut += fmtOut->extendedSize; - - bytesReadSoFar += fmtOut->extendedSize; - } - - /* Seek past any leftover bytes. For w64 the leftover will be defined based on the chunk size. */ - if (!onSeek(pUserData, (int)(header.sizeInBytes - bytesReadSoFar), drwav_seek_origin_current)) { - return DRWAV_FALSE; - } - *pRunningBytesReadOut += (header.sizeInBytes - bytesReadSoFar); - } - - if (header.paddingSize > 0) { - if (!onSeek(pUserData, header.paddingSize, drwav_seek_origin_current)) { - return DRWAV_FALSE; - } - *pRunningBytesReadOut += header.paddingSize; - } - - return DRWAV_TRUE; -} - - -#ifndef DR_WAV_NO_STDIO -FILE* drwav_fopen(const char* filePath, const char* openMode) -{ - FILE* pFile; -#if defined(_MSC_VER) && _MSC_VER >= 1400 - if (fopen_s(&pFile, filePath, openMode) != 0) { - return DRWAV_FALSE; - } -#else - pFile = fopen(filePath, openMode); - if (pFile == NULL) { - return DRWAV_FALSE; - } -#endif - - return pFile; -} - -static size_t drwav__on_read_stdio(void* pUserData, void* pBufferOut, size_t bytesToRead) -{ - return fread(pBufferOut, 1, bytesToRead, (FILE*)pUserData); -} - -static size_t drwav__on_write_stdio(void* pUserData, const void* pData, size_t bytesToWrite) -{ - return fwrite(pData, 1, bytesToWrite, (FILE*)pUserData); -} - -static drwav_bool32 drwav__on_seek_stdio(void* pUserData, int offset, drwav_seek_origin origin) -{ - return fseek((FILE*)pUserData, offset, (origin == drwav_seek_origin_current) ? SEEK_CUR : SEEK_SET) == 0; -} - -drwav_bool32 drwav_init_file(drwav* pWav, const char* filename) -{ - return drwav_init_file_ex(pWav, filename, NULL, NULL, 0); -} - -drwav_bool32 drwav_init_file_ex(drwav* pWav, const char* filename, drwav_chunk_proc onChunk, void* pChunkUserData, drwav_uint32 flags) -{ - FILE* pFile = drwav_fopen(filename, "rb"); - if (pFile == NULL) { - return DRWAV_FALSE; - } - - return drwav_init_ex(pWav, drwav__on_read_stdio, drwav__on_seek_stdio, onChunk, (void*)pFile, pChunkUserData, flags); -} - - -drwav_bool32 drwav_init_file_write__internal(drwav* pWav, const char* filename, const drwav_data_format* pFormat, drwav_uint64 totalSampleCount, drwav_bool32 isSequential) -{ - FILE* pFile = drwav_fopen(filename, "wb"); - if (pFile == NULL) { - return DRWAV_FALSE; - } - - return drwav_init_write__internal(pWav, pFormat, totalSampleCount, isSequential, drwav__on_write_stdio, drwav__on_seek_stdio, (void*)pFile); -} - -drwav_bool32 drwav_init_file_write(drwav* pWav, const char* filename, const drwav_data_format* pFormat) -{ - return drwav_init_file_write__internal(pWav, filename, pFormat, 0, DRWAV_FALSE); -} - -drwav_bool32 drwav_init_file_write_sequential(drwav* pWav, const char* filename, const drwav_data_format* pFormat, drwav_uint64 totalSampleCount) -{ - return drwav_init_file_write__internal(pWav, filename, pFormat, totalSampleCount, DRWAV_TRUE); -} - -drwav* drwav_open_file(const char* filename) -{ - return drwav_open_file_ex(filename, NULL, NULL, 0); -} - -drwav* drwav_open_file_ex(const char* filename, drwav_chunk_proc onChunk, void* pChunkUserData, drwav_uint32 flags) -{ - FILE* pFile; - drwav* pWav; - - pFile = drwav_fopen(filename, "rb"); - if (pFile == NULL) { - return DRWAV_FALSE; - } - - pWav = drwav_open_ex(drwav__on_read_stdio, drwav__on_seek_stdio, onChunk, (void*)pFile, pChunkUserData, flags); - if (pWav == NULL) { - fclose(pFile); - return NULL; - } - - return pWav; -} - - -drwav* drwav_open_file_write__internal(const char* filename, const drwav_data_format* pFormat, drwav_uint64 totalSampleCount, drwav_bool32 isSequential) -{ - FILE* pFile; - drwav* pWav; - - pFile = drwav_fopen(filename, "wb"); - if (pFile == NULL) { - return DRWAV_FALSE; - } - - pWav = drwav_open_write__internal(pFormat, totalSampleCount, isSequential, drwav__on_write_stdio, drwav__on_seek_stdio, (void*)pFile); - if (pWav == NULL) { - fclose(pFile); - return NULL; - } - - return pWav; -} - -drwav* drwav_open_file_write(const char* filename, const drwav_data_format* pFormat) -{ - return drwav_open_file_write__internal(filename, pFormat, 0, DRWAV_FALSE); -} - -drwav* drwav_open_file_write_sequential(const char* filename, const drwav_data_format* pFormat, drwav_uint64 totalSampleCount) -{ - return drwav_open_file_write__internal(filename, pFormat, totalSampleCount, DRWAV_TRUE); -} -#endif /* DR_WAV_NO_STDIO */ - - -static size_t drwav__on_read_memory(void* pUserData, void* pBufferOut, size_t bytesToRead) -{ - drwav__memory_stream* memory = (drwav__memory_stream*)pUserData; - size_t bytesRemaining; - - drwav_assert(memory != NULL); - drwav_assert(memory->dataSize >= memory->currentReadPos); - - bytesRemaining = memory->dataSize - memory->currentReadPos; - if (bytesToRead > bytesRemaining) { - bytesToRead = bytesRemaining; - } - - if (bytesToRead > 0) { - DRWAV_COPY_MEMORY(pBufferOut, memory->data + memory->currentReadPos, bytesToRead); - memory->currentReadPos += bytesToRead; - } - - return bytesToRead; -} - -static drwav_bool32 drwav__on_seek_memory(void* pUserData, int offset, drwav_seek_origin origin) -{ - drwav__memory_stream* memory = (drwav__memory_stream*)pUserData; - drwav_assert(memory != NULL); - - if (origin == drwav_seek_origin_current) { - if (offset > 0) { - if (memory->currentReadPos + offset > memory->dataSize) { - return DRWAV_FALSE; /* Trying to seek too far forward. */ - } - } else { - if (memory->currentReadPos < (size_t)-offset) { - return DRWAV_FALSE; /* Trying to seek too far backwards. */ - } - } - - /* This will never underflow thanks to the clamps above. */ - memory->currentReadPos += offset; - } else { - if ((drwav_uint32)offset <= memory->dataSize) { - memory->currentReadPos = offset; - } else { - return DRWAV_FALSE; /* Trying to seek too far forward. */ - } - } - - return DRWAV_TRUE; -} - -static size_t drwav__on_write_memory(void* pUserData, const void* pDataIn, size_t bytesToWrite) -{ - drwav__memory_stream_write* memory = (drwav__memory_stream_write*)pUserData; - size_t bytesRemaining; - - drwav_assert(memory != NULL); - drwav_assert(memory->dataCapacity >= memory->currentWritePos); - - bytesRemaining = memory->dataCapacity - memory->currentWritePos; - if (bytesRemaining < bytesToWrite) { - /* Need to reallocate. */ - void* pNewData; - size_t newDataCapacity = (memory->dataCapacity == 0) ? 256 : memory->dataCapacity * 2; - - /* If doubling wasn't enough, just make it the minimum required size to write the data. */ - if ((newDataCapacity - memory->currentWritePos) < bytesToWrite) { - newDataCapacity = memory->currentWritePos + bytesToWrite; - } - - pNewData = DRWAV_REALLOC(*memory->ppData, newDataCapacity); - if (pNewData == NULL) { - return 0; - } - - *memory->ppData = pNewData; - memory->dataCapacity = newDataCapacity; - } - - DRWAV_COPY_MEMORY(((drwav_uint8*)(*memory->ppData)) + memory->currentWritePos, pDataIn, bytesToWrite); - - memory->currentWritePos += bytesToWrite; - if (memory->dataSize < memory->currentWritePos) { - memory->dataSize = memory->currentWritePos; - } - - *memory->pDataSize = memory->dataSize; - - return bytesToWrite; -} - -static drwav_bool32 drwav__on_seek_memory_write(void* pUserData, int offset, drwav_seek_origin origin) -{ - drwav__memory_stream_write* memory = (drwav__memory_stream_write*)pUserData; - drwav_assert(memory != NULL); - - if (origin == drwav_seek_origin_current) { - if (offset > 0) { - if (memory->currentWritePos + offset > memory->dataSize) { - offset = (int)(memory->dataSize - memory->currentWritePos); /* Trying to seek too far forward. */ - } - } else { - if (memory->currentWritePos < (size_t)-offset) { - offset = -(int)memory->currentWritePos; /* Trying to seek too far backwards. */ - } - } - - /* This will never underflow thanks to the clamps above. */ - memory->currentWritePos += offset; - } else { - if ((drwav_uint32)offset <= memory->dataSize) { - memory->currentWritePos = offset; - } else { - memory->currentWritePos = memory->dataSize; /* Trying to seek too far forward. */ - } - } - - return DRWAV_TRUE; -} - -drwav_bool32 drwav_init_memory(drwav* pWav, const void* data, size_t dataSize) -{ - return drwav_init_memory_ex(pWav, data, dataSize, NULL, NULL, 0); -} - -drwav_bool32 drwav_init_memory_ex(drwav* pWav, const void* data, size_t dataSize, drwav_chunk_proc onChunk, void* pChunkUserData, drwav_uint32 flags) -{ - drwav__memory_stream memoryStream; - - if (data == NULL || dataSize == 0) { - return DRWAV_FALSE; - } - - drwav_zero_memory(&memoryStream, sizeof(memoryStream)); - memoryStream.data = (const unsigned char*)data; - memoryStream.dataSize = dataSize; - memoryStream.currentReadPos = 0; - - if (!drwav_init_ex(pWav, drwav__on_read_memory, drwav__on_seek_memory, onChunk, (void*)&memoryStream, pChunkUserData, flags)) { - return DRWAV_FALSE; - } - - pWav->memoryStream = memoryStream; - pWav->pUserData = &pWav->memoryStream; - return DRWAV_TRUE; -} - - -drwav_bool32 drwav_init_memory_write__internal(drwav* pWav, void** ppData, size_t* pDataSize, const drwav_data_format* pFormat, drwav_uint64 totalSampleCount, drwav_bool32 isSequential) -{ - drwav__memory_stream_write memoryStreamWrite; - - if (ppData == NULL) { - return DRWAV_FALSE; - } - - *ppData = NULL; /* Important because we're using realloc()! */ - *pDataSize = 0; - - drwav_zero_memory(&memoryStreamWrite, sizeof(memoryStreamWrite)); - memoryStreamWrite.ppData = ppData; - memoryStreamWrite.pDataSize = pDataSize; - memoryStreamWrite.dataSize = 0; - memoryStreamWrite.dataCapacity = 0; - memoryStreamWrite.currentWritePos = 0; - - if (!drwav_init_write__internal(pWav, pFormat, totalSampleCount, isSequential, drwav__on_write_memory, drwav__on_seek_memory_write, (void*)&memoryStreamWrite)) { - return DRWAV_FALSE; - } - - pWav->memoryStreamWrite = memoryStreamWrite; - pWav->pUserData = &pWav->memoryStreamWrite; - return DRWAV_TRUE; -} - -drwav_bool32 drwav_init_memory_write(drwav* pWav, void** ppData, size_t* pDataSize, const drwav_data_format* pFormat) -{ - return drwav_init_memory_write__internal(pWav, ppData, pDataSize, pFormat, 0, DRWAV_FALSE); -} - -drwav_bool32 drwav_init_memory_write_sequential(drwav* pWav, void** ppData, size_t* pDataSize, const drwav_data_format* pFormat, drwav_uint64 totalSampleCount) -{ - return drwav_init_memory_write__internal(pWav, ppData, pDataSize, pFormat, totalSampleCount, DRWAV_TRUE); -} - - -drwav* drwav_open_memory(const void* data, size_t dataSize) -{ - return drwav_open_memory_ex(data, dataSize, NULL, NULL, 0); -} - -drwav* drwav_open_memory_ex(const void* data, size_t dataSize, drwav_chunk_proc onChunk, void* pChunkUserData, drwav_uint32 flags) -{ - drwav__memory_stream memoryStream; - drwav* pWav; - - if (data == NULL || dataSize == 0) { - return NULL; - } - - drwav_zero_memory(&memoryStream, sizeof(memoryStream)); - memoryStream.data = (const unsigned char*)data; - memoryStream.dataSize = dataSize; - memoryStream.currentReadPos = 0; - - pWav = drwav_open_ex(drwav__on_read_memory, drwav__on_seek_memory, onChunk, (void*)&memoryStream, pChunkUserData, flags); - if (pWav == NULL) { - return NULL; - } - - pWav->memoryStream = memoryStream; - pWav->pUserData = &pWav->memoryStream; - return pWav; -} - - -drwav* drwav_open_memory_write__internal(void** ppData, size_t* pDataSize, const drwav_data_format* pFormat, drwav_uint64 totalSampleCount, drwav_bool32 isSequential) -{ - drwav__memory_stream_write memoryStreamWrite; - drwav* pWav; - - if (ppData == NULL) { - return NULL; - } - - *ppData = NULL; /* Important because we're using realloc()! */ - *pDataSize = 0; - - drwav_zero_memory(&memoryStreamWrite, sizeof(memoryStreamWrite)); - memoryStreamWrite.ppData = ppData; - memoryStreamWrite.pDataSize = pDataSize; - memoryStreamWrite.dataSize = 0; - memoryStreamWrite.dataCapacity = 0; - memoryStreamWrite.currentWritePos = 0; - - pWav = drwav_open_write__internal(pFormat, totalSampleCount, isSequential, drwav__on_write_memory, drwav__on_seek_memory_write, (void*)&memoryStreamWrite); - if (pWav == NULL) { - return NULL; - } - - pWav->memoryStreamWrite = memoryStreamWrite; - pWav->pUserData = &pWav->memoryStreamWrite; - return pWav; -} - -drwav* drwav_open_memory_write(void** ppData, size_t* pDataSize, const drwav_data_format* pFormat) -{ - return drwav_open_memory_write__internal(ppData, pDataSize, pFormat, 0, DRWAV_FALSE); -} - -drwav* drwav_open_memory_write_sequential(void** ppData, size_t* pDataSize, const drwav_data_format* pFormat, drwav_uint64 totalSampleCount) -{ - return drwav_open_memory_write__internal(ppData, pDataSize, pFormat, totalSampleCount, DRWAV_TRUE); -} - - -size_t drwav__on_read(drwav_read_proc onRead, void* pUserData, void* pBufferOut, size_t bytesToRead, drwav_uint64* pCursor) -{ - size_t bytesRead; - - drwav_assert(onRead != NULL); - drwav_assert(pCursor != NULL); - - bytesRead = onRead(pUserData, pBufferOut, bytesToRead); - *pCursor += bytesRead; - return bytesRead; -} - -drwav_bool32 drwav__on_seek(drwav_seek_proc onSeek, void* pUserData, int offset, drwav_seek_origin origin, drwav_uint64* pCursor) -{ - drwav_assert(onSeek != NULL); - drwav_assert(pCursor != NULL); - - if (!onSeek(pUserData, offset, origin)) { - return DRWAV_FALSE; - } - - if (origin == drwav_seek_origin_start) { - *pCursor = offset; - } else { - *pCursor += offset; - } - - return DRWAV_TRUE; -} - - -static drwav_uint32 drwav_get_bytes_per_sample(drwav* pWav) -{ - /* - The number of bytes per sample is based on the bits per sample or the block align. We prioritize floor(bitsPerSample/8), but if - this is zero or the bits per sample is not a multiple of 8 we need to fall back to the block align. - */ - drwav_uint32 bytesPerSample = pWav->bitsPerSample >> 3; - if (bytesPerSample == 0 || (pWav->bitsPerSample & 0x7) != 0) { - bytesPerSample = pWav->fmt.blockAlign/pWav->fmt.channels; - } - - return bytesPerSample; -} - -static drwav_uint32 drwav_get_bytes_per_pcm_frame(drwav* pWav) -{ - /* - The number of bytes per frame is based on the bits per sample or the block align. We prioritize floor(bitsPerSample*channels/8), but if - this is zero or the bits per frame is not a multiple of 8 we need to fall back to the block align. - */ - drwav_uint32 bitsPerFrame = pWav->bitsPerSample * pWav->fmt.channels; - drwav_uint32 bytesPerFrame = bitsPerFrame >> 3; - if (bytesPerFrame == 0 || (bitsPerFrame & 0x7) != 0) { - bytesPerFrame = pWav->fmt.blockAlign; - } - - return bytesPerFrame; -} - - -drwav_bool32 drwav_init(drwav* pWav, drwav_read_proc onRead, drwav_seek_proc onSeek, void* pUserData) -{ - return drwav_init_ex(pWav, onRead, onSeek, NULL, pUserData, NULL, 0); -} - -drwav_bool32 drwav_init_ex(drwav* pWav, drwav_read_proc onRead, drwav_seek_proc onSeek, drwav_chunk_proc onChunk, void* pReadSeekUserData, void* pChunkUserData, drwav_uint32 flags) -{ - drwav_uint64 cursor; /* <-- Keeps track of the byte position so we can seek to specific locations. */ - drwav_bool32 sequential; - unsigned char riff[4]; - drwav_fmt fmt; - unsigned short translatedFormatTag; - drwav_uint64 sampleCountFromFactChunk; - drwav_bool32 foundDataChunk; - drwav_uint64 dataChunkSize; - drwav_uint64 chunkSize; - - if (onRead == NULL || onSeek == NULL) { - return DRWAV_FALSE; - } - - cursor = 0; - sequential = (flags & DRWAV_SEQUENTIAL) != 0; - - drwav_zero_memory(pWav, sizeof(*pWav)); - pWav->onRead = onRead; - pWav->onSeek = onSeek; - pWav->pUserData = pReadSeekUserData; - - /* The first 4 bytes should be the RIFF identifier. */ - if (drwav__on_read(onRead, pReadSeekUserData, riff, sizeof(riff), &cursor) != sizeof(riff)) { - return DRWAV_FALSE; - } - - /* - The first 4 bytes can be used to identify the container. For RIFF files it will start with "RIFF" and for - w64 it will start with "riff". - */ - if (drwav__fourcc_equal(riff, "RIFF")) { - pWav->container = drwav_container_riff; - } else if (drwav__fourcc_equal(riff, "riff")) { - int i; - drwav_uint8 riff2[12]; - - pWav->container = drwav_container_w64; - - /* Check the rest of the GUID for validity. */ - if (drwav__on_read(onRead, pReadSeekUserData, riff2, sizeof(riff2), &cursor) != sizeof(riff2)) { - return DRWAV_FALSE; - } - - for (i = 0; i < 12; ++i) { - if (riff2[i] != drwavGUID_W64_RIFF[i+4]) { - return DRWAV_FALSE; - } - } - } else { - return DRWAV_FALSE; /* Unknown or unsupported container. */ - } - - - if (pWav->container == drwav_container_riff) { - unsigned char chunkSizeBytes[4]; - unsigned char wave[4]; - - /* RIFF/WAVE */ - if (drwav__on_read(onRead, pReadSeekUserData, chunkSizeBytes, sizeof(chunkSizeBytes), &cursor) != sizeof(chunkSizeBytes)) { - return DRWAV_FALSE; - } - - if (drwav__bytes_to_u32(chunkSizeBytes) < 36) { - return DRWAV_FALSE; /* Chunk size should always be at least 36 bytes. */ - } - - if (drwav__on_read(onRead, pReadSeekUserData, wave, sizeof(wave), &cursor) != sizeof(wave)) { - return DRWAV_FALSE; - } - - if (!drwav__fourcc_equal(wave, "WAVE")) { - return DRWAV_FALSE; /* Expecting "WAVE". */ - } - } else { - unsigned char chunkSizeBytes[8]; - drwav_uint8 wave[16]; - - /* W64 */ - if (drwav__on_read(onRead, pReadSeekUserData, chunkSizeBytes, sizeof(chunkSizeBytes), &cursor) != sizeof(chunkSizeBytes)) { - return DRWAV_FALSE; - } - - if (drwav__bytes_to_u64(chunkSizeBytes) < 80) { - return DRWAV_FALSE; - } - - if (drwav__on_read(onRead, pReadSeekUserData, wave, sizeof(wave), &cursor) != sizeof(wave)) { - return DRWAV_FALSE; - } - - if (!drwav__guid_equal(wave, drwavGUID_W64_WAVE)) { - return DRWAV_FALSE; - } - } - - - /* The next bytes should be the "fmt " chunk. */ - if (!drwav__read_fmt(onRead, onSeek, pReadSeekUserData, pWav->container, &cursor, &fmt)) { - return DRWAV_FALSE; /* Failed to read the "fmt " chunk. */ - } - - /* Basic validation. */ - if (fmt.sampleRate == 0 || fmt.channels == 0 || fmt.bitsPerSample == 0 || fmt.blockAlign == 0) { - return DRWAV_FALSE; /* Invalid channel count. Probably an invalid WAV file. */ - } - - - /* Translate the internal format. */ - translatedFormatTag = fmt.formatTag; - if (translatedFormatTag == DR_WAVE_FORMAT_EXTENSIBLE) { - translatedFormatTag = drwav__bytes_to_u16(fmt.subFormat + 0); - } - - - - sampleCountFromFactChunk = 0; - - /* - We need to enumerate over each chunk for two reasons: - 1) The "data" chunk may not be the next one - 2) We may want to report each chunk back to the client - - In order to correctly report each chunk back to the client we will need to keep looping until the end of the file. - */ - foundDataChunk = DRWAV_FALSE; - dataChunkSize = 0; - - /* The next chunk we care about is the "data" chunk. This is not necessarily the next chunk so we'll need to loop. */ - chunkSize = 0; - for (;;) - { - drwav_chunk_header header; - drwav_result result = drwav__read_chunk_header(onRead, pReadSeekUserData, pWav->container, &cursor, &header); - if (result != DRWAV_SUCCESS) { - if (!foundDataChunk) { - return DRWAV_FALSE; - } else { - break; /* Probably at the end of the file. Get out of the loop. */ - } - } - - /* Tell the client about this chunk. */ - if (!sequential && onChunk != NULL) { - drwav_uint64 callbackBytesRead = onChunk(pChunkUserData, onRead, onSeek, pReadSeekUserData, &header); - - /* - dr_wav may need to read the contents of the chunk, so we now need to seek back to the position before - we called the callback. - */ - if (callbackBytesRead > 0) { - if (!drwav__seek_from_start(onSeek, cursor, pReadSeekUserData)) { - return DRWAV_FALSE; - } - } - } - - - if (!foundDataChunk) { - pWav->dataChunkDataPos = cursor; - } - - chunkSize = header.sizeInBytes; - if (pWav->container == drwav_container_riff) { - if (drwav__fourcc_equal(header.id.fourcc, "data")) { - foundDataChunk = DRWAV_TRUE; - dataChunkSize = chunkSize; - } - } else { - if (drwav__guid_equal(header.id.guid, drwavGUID_W64_DATA)) { - foundDataChunk = DRWAV_TRUE; - dataChunkSize = chunkSize; - } - } - - /* - If at this point we have found the data chunk and we're running in sequential mode, we need to break out of this loop. The reason for - this is that we would otherwise require a backwards seek which sequential mode forbids. - */ - if (foundDataChunk && sequential) { - break; - } - - /* Optional. Get the total sample count from the FACT chunk. This is useful for compressed formats. */ - if (pWav->container == drwav_container_riff) { - if (drwav__fourcc_equal(header.id.fourcc, "fact")) { - drwav_uint32 sampleCount; - if (drwav__on_read(onRead, pReadSeekUserData, &sampleCount, 4, &cursor) != 4) { - return DRWAV_FALSE; - } - chunkSize -= 4; - - if (!foundDataChunk) { - pWav->dataChunkDataPos = cursor; - } - - /* - The sample count in the "fact" chunk is either unreliable, or I'm not understanding it properly. For now I am only enabling this - for Microsoft ADPCM formats. - */ - if (pWav->translatedFormatTag == DR_WAVE_FORMAT_ADPCM) { - sampleCountFromFactChunk = sampleCount; - } else { - sampleCountFromFactChunk = 0; - } - } - } else { - if (drwav__guid_equal(header.id.guid, drwavGUID_W64_FACT)) { - if (drwav__on_read(onRead, pReadSeekUserData, &sampleCountFromFactChunk, 8, &cursor) != 8) { - return DRWAV_FALSE; - } - chunkSize -= 8; - - if (!foundDataChunk) { - pWav->dataChunkDataPos = cursor; - } - } - } - - /* "smpl" chunk. */ - if (pWav->container == drwav_container_riff) { - if (drwav__fourcc_equal(header.id.fourcc, "smpl")) { - unsigned char smplHeaderData[36]; /* 36 = size of the smpl header section, not including the loop data. */ - if (chunkSize >= sizeof(smplHeaderData)) { - drwav_uint64 bytesJustRead = drwav__on_read(onRead, pReadSeekUserData, smplHeaderData, sizeof(smplHeaderData), &cursor); - chunkSize -= bytesJustRead; - - if (bytesJustRead == sizeof(smplHeaderData)) { - drwav_uint32 iLoop; - - pWav->smpl.manufacturer = drwav__bytes_to_u32(smplHeaderData+0); - pWav->smpl.product = drwav__bytes_to_u32(smplHeaderData+4); - pWav->smpl.samplePeriod = drwav__bytes_to_u32(smplHeaderData+8); - pWav->smpl.midiUnityNotes = drwav__bytes_to_u32(smplHeaderData+12); - pWav->smpl.midiPitchFraction = drwav__bytes_to_u32(smplHeaderData+16); - pWav->smpl.smpteFormat = drwav__bytes_to_u32(smplHeaderData+20); - pWav->smpl.smpteOffset = drwav__bytes_to_u32(smplHeaderData+24); - pWav->smpl.numSampleLoops = drwav__bytes_to_u32(smplHeaderData+28); - pWav->smpl.samplerData = drwav__bytes_to_u32(smplHeaderData+32); - - for (iLoop = 0; iLoop < pWav->smpl.numSampleLoops && iLoop < drwav_countof(pWav->smpl.loops); ++iLoop) { - unsigned char smplLoopData[24]; /* 24 = size of a loop section in the smpl chunk. */ - bytesJustRead = drwav__on_read(onRead, pReadSeekUserData, smplLoopData, sizeof(smplLoopData), &cursor); - chunkSize -= bytesJustRead; - - if (bytesJustRead == sizeof(smplLoopData)) { - pWav->smpl.loops[iLoop].cuePointId = drwav__bytes_to_u32(smplLoopData+0); - pWav->smpl.loops[iLoop].type = drwav__bytes_to_u32(smplLoopData+4); - pWav->smpl.loops[iLoop].start = drwav__bytes_to_u32(smplLoopData+8); - pWav->smpl.loops[iLoop].end = drwav__bytes_to_u32(smplLoopData+12); - pWav->smpl.loops[iLoop].fraction = drwav__bytes_to_u32(smplLoopData+16); - pWav->smpl.loops[iLoop].playCount = drwav__bytes_to_u32(smplLoopData+20); - } else { - break; /* Break from the smpl loop for loop. */ - } - } - } - } else { - /* Looks like invalid data. Ignore the chunk. */ - } - } - } else { - if (drwav__guid_equal(header.id.guid, drwavGUID_W64_SMPL)) { - /* - This path will be hit when a W64 WAV file contains a smpl chunk. I don't have a sample file to test this path, so a contribution - is welcome to add support for this. - */ - } - } - - /* Make sure we seek past the padding. */ - chunkSize += header.paddingSize; - if (!drwav__seek_forward(onSeek, chunkSize, pReadSeekUserData)) { - break; - } - cursor += chunkSize; - - if (!foundDataChunk) { - pWav->dataChunkDataPos = cursor; - } - } - - /* If we haven't found a data chunk, return an error. */ - if (!foundDataChunk) { - return DRWAV_FALSE; - } - - /* We may have moved passed the data chunk. If so we need to move back. If running in sequential mode we can assume we are already sitting on the data chunk. */ - if (!sequential) { - if (!drwav__seek_from_start(onSeek, pWav->dataChunkDataPos, pReadSeekUserData)) { - return DRWAV_FALSE; - } - cursor = pWav->dataChunkDataPos; - } - - - /* At this point we should be sitting on the first byte of the raw audio data. */ - - pWav->fmt = fmt; - pWav->sampleRate = fmt.sampleRate; - pWav->channels = fmt.channels; - pWav->bitsPerSample = fmt.bitsPerSample; - pWav->bytesRemaining = dataChunkSize; - pWav->translatedFormatTag = translatedFormatTag; - pWav->dataChunkDataSize = dataChunkSize; - - if (sampleCountFromFactChunk != 0) { - pWav->totalPCMFrameCount = sampleCountFromFactChunk; - } else { - pWav->totalPCMFrameCount = dataChunkSize / drwav_get_bytes_per_pcm_frame(pWav); - - if (pWav->translatedFormatTag == DR_WAVE_FORMAT_ADPCM) { - drwav_uint64 blockCount = dataChunkSize / fmt.blockAlign; - pWav->totalPCMFrameCount = (((blockCount * (fmt.blockAlign - (6*pWav->channels))) * 2)) / fmt.channels; /* x2 because two samples per byte. */ - } - if (pWav->translatedFormatTag == DR_WAVE_FORMAT_DVI_ADPCM) { - drwav_uint64 blockCount = dataChunkSize / fmt.blockAlign; - pWav->totalPCMFrameCount = (((blockCount * (fmt.blockAlign - (4*pWav->channels))) * 2) + (blockCount * pWav->channels)) / fmt.channels; - } - } - - /* Some formats only support a certain number of channels. */ - if (pWav->translatedFormatTag == DR_WAVE_FORMAT_ADPCM || pWav->translatedFormatTag == DR_WAVE_FORMAT_DVI_ADPCM) { - if (pWav->channels > 2) { - return DRWAV_FALSE; - } - } - -#ifdef DR_WAV_LIBSNDFILE_COMPAT - /* - I use libsndfile as a benchmark for testing, however in the version I'm using (from the Windows installer on the libsndfile website), - it appears the total sample count libsndfile uses for MS-ADPCM is incorrect. It would seem they are computing the total sample count - from the number of blocks, however this results in the inclusion of extra silent samples at the end of the last block. The correct - way to know the total sample count is to inspect the "fact" chunk, which should always be present for compressed formats, and should - always include the sample count. This little block of code below is only used to emulate the libsndfile logic so I can properly run my - correctness tests against libsndfile, and is disabled by default. - */ - if (pWav->translatedFormatTag == DR_WAVE_FORMAT_ADPCM) { - drwav_uint64 blockCount = dataChunkSize / fmt.blockAlign; - pWav->totalPCMFrameCount = (((blockCount * (fmt.blockAlign - (6*pWav->channels))) * 2)) / fmt.channels; /* x2 because two samples per byte. */ - } - if (pWav->translatedFormatTag == DR_WAVE_FORMAT_DVI_ADPCM) { - drwav_uint64 blockCount = dataChunkSize / fmt.blockAlign; - pWav->totalPCMFrameCount = (((blockCount * (fmt.blockAlign - (4*pWav->channels))) * 2) + (blockCount * pWav->channels)) / fmt.channels; - } -#endif - - pWav->totalSampleCount = pWav->totalPCMFrameCount * pWav->channels; - - return DRWAV_TRUE; -} - - -drwav_uint32 drwav_riff_chunk_size_riff(drwav_uint64 dataChunkSize) -{ - if (dataChunkSize <= (0xFFFFFFFFUL - 36)) { - return 36 + (drwav_uint32)dataChunkSize; - } else { - return 0xFFFFFFFF; - } -} - -drwav_uint32 drwav_data_chunk_size_riff(drwav_uint64 dataChunkSize) -{ - if (dataChunkSize <= 0xFFFFFFFFUL) { - return (drwav_uint32)dataChunkSize; - } else { - return 0xFFFFFFFFUL; - } -} - -drwav_uint64 drwav_riff_chunk_size_w64(drwav_uint64 dataChunkSize) -{ - return 80 + 24 + dataChunkSize; /* +24 because W64 includes the size of the GUID and size fields. */ -} - -drwav_uint64 drwav_data_chunk_size_w64(drwav_uint64 dataChunkSize) -{ - return 24 + dataChunkSize; /* +24 because W64 includes the size of the GUID and size fields. */ -} - - -drwav_bool32 drwav_init_write__internal(drwav* pWav, const drwav_data_format* pFormat, drwav_uint64 totalSampleCount, drwav_bool32 isSequential, drwav_write_proc onWrite, drwav_seek_proc onSeek, void* pUserData) -{ - size_t runningPos = 0; - drwav_uint64 initialDataChunkSize = 0; - drwav_uint64 chunkSizeFMT; - - if (pWav == NULL) { - return DRWAV_FALSE; - } - - if (onWrite == NULL) { - return DRWAV_FALSE; - } - - if (!isSequential && onSeek == NULL) { - return DRWAV_FALSE; /* <-- onSeek is required when in non-sequential mode. */ - } - - - /* Not currently supporting compressed formats. Will need to add support for the "fact" chunk before we enable this. */ - if (pFormat->format == DR_WAVE_FORMAT_EXTENSIBLE) { - return DRWAV_FALSE; - } - if (pFormat->format == DR_WAVE_FORMAT_ADPCM || pFormat->format == DR_WAVE_FORMAT_DVI_ADPCM) { - return DRWAV_FALSE; - } - - - drwav_zero_memory(pWav, sizeof(*pWav)); - pWav->onWrite = onWrite; - pWav->onSeek = onSeek; - pWav->pUserData = pUserData; - pWav->fmt.formatTag = (drwav_uint16)pFormat->format; - pWav->fmt.channels = (drwav_uint16)pFormat->channels; - pWav->fmt.sampleRate = pFormat->sampleRate; - pWav->fmt.avgBytesPerSec = (drwav_uint32)((pFormat->bitsPerSample * pFormat->sampleRate * pFormat->channels) / 8); - pWav->fmt.blockAlign = (drwav_uint16)((pFormat->channels * pFormat->bitsPerSample) / 8); - pWav->fmt.bitsPerSample = (drwav_uint16)pFormat->bitsPerSample; - pWav->fmt.extendedSize = 0; - pWav->isSequentialWrite = isSequential; - - /* - The initial values for the "RIFF" and "data" chunks depends on whether or not we are initializing in sequential mode or not. In - sequential mode we set this to its final values straight away since they can be calculated from the total sample count. In non- - sequential mode we initialize it all to zero and fill it out in drwav_uninit() using a backwards seek. - */ - if (isSequential) { - initialDataChunkSize = (totalSampleCount * pWav->fmt.bitsPerSample) / 8; - - /* - The RIFF container has a limit on the number of samples. drwav is not allowing this. There's no practical limits for Wave64 - so for the sake of simplicity I'm not doing any validation for that. - */ - if (pFormat->container == drwav_container_riff) { - if (initialDataChunkSize > (0xFFFFFFFFUL - 36)) { - return DRWAV_FALSE; /* Not enough room to store every sample. */ - } - } - } - - pWav->dataChunkDataSizeTargetWrite = initialDataChunkSize; - - - /* "RIFF" chunk. */ - if (pFormat->container == drwav_container_riff) { - drwav_uint32 chunkSizeRIFF = 36 + (drwav_uint32)initialDataChunkSize; /* +36 = "RIFF"+[RIFF Chunk Size]+"WAVE" + [sizeof "fmt " chunk] */ - runningPos += pWav->onWrite(pUserData, "RIFF", 4); - runningPos += pWav->onWrite(pUserData, &chunkSizeRIFF, 4); - runningPos += pWav->onWrite(pUserData, "WAVE", 4); - } else { - drwav_uint64 chunkSizeRIFF = 80 + 24 + initialDataChunkSize; /* +24 because W64 includes the size of the GUID and size fields. */ - runningPos += pWav->onWrite(pUserData, drwavGUID_W64_RIFF, 16); - runningPos += pWav->onWrite(pUserData, &chunkSizeRIFF, 8); - runningPos += pWav->onWrite(pUserData, drwavGUID_W64_WAVE, 16); - } - - /* "fmt " chunk. */ - if (pFormat->container == drwav_container_riff) { - chunkSizeFMT = 16; - runningPos += pWav->onWrite(pUserData, "fmt ", 4); - runningPos += pWav->onWrite(pUserData, &chunkSizeFMT, 4); - } else { - chunkSizeFMT = 40; - runningPos += pWav->onWrite(pUserData, drwavGUID_W64_FMT, 16); - runningPos += pWav->onWrite(pUserData, &chunkSizeFMT, 8); - } - - runningPos += pWav->onWrite(pUserData, &pWav->fmt.formatTag, 2); - runningPos += pWav->onWrite(pUserData, &pWav->fmt.channels, 2); - runningPos += pWav->onWrite(pUserData, &pWav->fmt.sampleRate, 4); - runningPos += pWav->onWrite(pUserData, &pWav->fmt.avgBytesPerSec, 4); - runningPos += pWav->onWrite(pUserData, &pWav->fmt.blockAlign, 2); - runningPos += pWav->onWrite(pUserData, &pWav->fmt.bitsPerSample, 2); - - pWav->dataChunkDataPos = runningPos; - - /* "data" chunk. */ - if (pFormat->container == drwav_container_riff) { - drwav_uint32 chunkSizeDATA = (drwav_uint32)initialDataChunkSize; - runningPos += pWav->onWrite(pUserData, "data", 4); - runningPos += pWav->onWrite(pUserData, &chunkSizeDATA, 4); - } else { - drwav_uint64 chunkSizeDATA = 24 + initialDataChunkSize; /* +24 because W64 includes the size of the GUID and size fields. */ - runningPos += pWav->onWrite(pUserData, drwavGUID_W64_DATA, 16); - runningPos += pWav->onWrite(pUserData, &chunkSizeDATA, 8); - } - - - /* Simple validation. */ - if (pFormat->container == drwav_container_riff) { - if (runningPos != 20 + chunkSizeFMT + 8) { - return DRWAV_FALSE; - } - } else { - if (runningPos != 40 + chunkSizeFMT + 24) { - return DRWAV_FALSE; - } - } - - - - /* Set some properties for the client's convenience. */ - pWav->container = pFormat->container; - pWav->channels = (drwav_uint16)pFormat->channels; - pWav->sampleRate = pFormat->sampleRate; - pWav->bitsPerSample = (drwav_uint16)pFormat->bitsPerSample; - pWav->translatedFormatTag = (drwav_uint16)pFormat->format; - - return DRWAV_TRUE; -} - - -drwav_bool32 drwav_init_write(drwav* pWav, const drwav_data_format* pFormat, drwav_write_proc onWrite, drwav_seek_proc onSeek, void* pUserData) -{ - return drwav_init_write__internal(pWav, pFormat, 0, DRWAV_FALSE, onWrite, onSeek, pUserData); /* DRWAV_FALSE = Not Sequential */ -} - -drwav_bool32 drwav_init_write_sequential(drwav* pWav, const drwav_data_format* pFormat, drwav_uint64 totalSampleCount, drwav_write_proc onWrite, void* pUserData) -{ - return drwav_init_write__internal(pWav, pFormat, totalSampleCount, DRWAV_TRUE, onWrite, NULL, pUserData); /* DRWAV_TRUE = Sequential */ -} - -void drwav_uninit(drwav* pWav) -{ - if (pWav == NULL) { - return; - } - - /* - If the drwav object was opened in write mode we'll need to finalize a few things: - - Make sure the "data" chunk is aligned to 16-bits for RIFF containers, or 64 bits for W64 containers. - - Set the size of the "data" chunk. - */ - if (pWav->onWrite != NULL) { - drwav_uint32 paddingSize = 0; - - /* Validation for sequential mode. */ - if (pWav->isSequentialWrite) { - drwav_assert(pWav->dataChunkDataSize == pWav->dataChunkDataSizeTargetWrite); - } - - /* Padding. Do not adjust pWav->dataChunkDataSize - this should not include the padding. */ - if (pWav->container == drwav_container_riff) { - paddingSize = (drwav_uint32)(pWav->dataChunkDataSize % 2); - } else { - paddingSize = (drwav_uint32)(pWav->dataChunkDataSize % 8); - } - - if (paddingSize > 0) { - drwav_uint64 paddingData = 0; - pWav->onWrite(pWav->pUserData, &paddingData, paddingSize); - } - - /* - Chunk sizes. When using sequential mode, these will have been filled in at initialization time. We only need - to do this when using non-sequential mode. - */ - if (pWav->onSeek && !pWav->isSequentialWrite) { - if (pWav->container == drwav_container_riff) { - /* The "RIFF" chunk size. */ - if (pWav->onSeek(pWav->pUserData, 4, drwav_seek_origin_start)) { - drwav_uint32 riffChunkSize = drwav_riff_chunk_size_riff(pWav->dataChunkDataSize); - pWav->onWrite(pWav->pUserData, &riffChunkSize, 4); - } - - /* the "data" chunk size. */ - if (pWav->onSeek(pWav->pUserData, (int)pWav->dataChunkDataPos + 4, drwav_seek_origin_start)) { - drwav_uint32 dataChunkSize = drwav_data_chunk_size_riff(pWav->dataChunkDataSize); - pWav->onWrite(pWav->pUserData, &dataChunkSize, 4); - } - } else { - /* The "RIFF" chunk size. */ - if (pWav->onSeek(pWav->pUserData, 16, drwav_seek_origin_start)) { - drwav_uint64 riffChunkSize = drwav_riff_chunk_size_w64(pWav->dataChunkDataSize); - pWav->onWrite(pWav->pUserData, &riffChunkSize, 8); - } - - /* The "data" chunk size. */ - if (pWav->onSeek(pWav->pUserData, (int)pWav->dataChunkDataPos + 16, drwav_seek_origin_start)) { - drwav_uint64 dataChunkSize = drwav_data_chunk_size_w64(pWav->dataChunkDataSize); - pWav->onWrite(pWav->pUserData, &dataChunkSize, 8); - } - } - } - } - -#ifndef DR_WAV_NO_STDIO - /* - If we opened the file with drwav_open_file() we will want to close the file handle. We can know whether or not drwav_open_file() - was used by looking at the onRead and onSeek callbacks. - */ - if (pWav->onRead == drwav__on_read_stdio || pWav->onWrite == drwav__on_write_stdio) { - fclose((FILE*)pWav->pUserData); - } -#endif -} - - -drwav* drwav_open(drwav_read_proc onRead, drwav_seek_proc onSeek, void* pUserData) -{ - return drwav_open_ex(onRead, onSeek, NULL, pUserData, NULL, 0); -} - -drwav* drwav_open_ex(drwav_read_proc onRead, drwav_seek_proc onSeek, drwav_chunk_proc onChunk, void* pReadSeekUserData, void* pChunkUserData, drwav_uint32 flags) -{ - drwav* pWav = (drwav*)DRWAV_MALLOC(sizeof(*pWav)); - if (pWav == NULL) { - return NULL; - } - - if (!drwav_init_ex(pWav, onRead, onSeek, onChunk, pReadSeekUserData, pChunkUserData, flags)) { - DRWAV_FREE(pWav); - return NULL; - } - - return pWav; -} - - -drwav* drwav_open_write__internal(const drwav_data_format* pFormat, drwav_uint64 totalSampleCount, drwav_bool32 isSequential, drwav_write_proc onWrite, drwav_seek_proc onSeek, void* pUserData) -{ - drwav* pWav = (drwav*)DRWAV_MALLOC(sizeof(*pWav)); - if (pWav == NULL) { - return NULL; - } - - if (!drwav_init_write__internal(pWav, pFormat, totalSampleCount, isSequential, onWrite, onSeek, pUserData)) { - DRWAV_FREE(pWav); - return NULL; - } - - return pWav; -} - -drwav* drwav_open_write(const drwav_data_format* pFormat, drwav_write_proc onWrite, drwav_seek_proc onSeek, void* pUserData) -{ - return drwav_open_write__internal(pFormat, 0, DRWAV_FALSE, onWrite, onSeek, pUserData); -} - -drwav* drwav_open_write_sequential(const drwav_data_format* pFormat, drwav_uint64 totalSampleCount, drwav_write_proc onWrite, void* pUserData) -{ - return drwav_open_write__internal(pFormat, totalSampleCount, DRWAV_TRUE, onWrite, NULL, pUserData); -} - -void drwav_close(drwav* pWav) -{ - drwav_uninit(pWav); - DRWAV_FREE(pWav); -} - - -size_t drwav_read_raw(drwav* pWav, size_t bytesToRead, void* pBufferOut) -{ - size_t bytesRead; - - if (pWav == NULL || bytesToRead == 0 || pBufferOut == NULL) { - return 0; - } - - if (bytesToRead > pWav->bytesRemaining) { - bytesToRead = (size_t)pWav->bytesRemaining; - } - - bytesRead = pWav->onRead(pWav->pUserData, pBufferOut, bytesToRead); - - pWav->bytesRemaining -= bytesRead; - return bytesRead; -} - -drwav_uint64 drwav_read(drwav* pWav, drwav_uint64 samplesToRead, void* pBufferOut) -{ - drwav_uint32 bytesPerSample; - size_t bytesRead; - - if (pWav == NULL || samplesToRead == 0 || pBufferOut == NULL) { - return 0; - } - - /* Cannot use this function for compressed formats. */ - if (drwav__is_compressed_format_tag(pWav->translatedFormatTag)) { - return 0; - } - - bytesPerSample = drwav_get_bytes_per_sample(pWav); - if (bytesPerSample == 0) { - return 0; - } - - /* Don't try to read more samples than can potentially fit in the output buffer. */ - if (samplesToRead * bytesPerSample > DRWAV_SIZE_MAX) { - samplesToRead = DRWAV_SIZE_MAX / bytesPerSample; - } - - bytesRead = drwav_read_raw(pWav, (size_t)(samplesToRead * bytesPerSample), pBufferOut); - return bytesRead / bytesPerSample; -} - -drwav_uint64 drwav_read_pcm_frames(drwav* pWav, drwav_uint64 framesToRead, void* pBufferOut) -{ - drwav_uint32 bytesPerFrame; - size_t bytesRead; - - if (pWav == NULL || framesToRead == 0 || pBufferOut == NULL) { - return 0; - } - - /* Cannot use this function for compressed formats. */ - if (drwav__is_compressed_format_tag(pWav->translatedFormatTag)) { - return 0; - } - - bytesPerFrame = drwav_get_bytes_per_pcm_frame(pWav); - if (bytesPerFrame == 0) { - return 0; - } - - /* Don't try to read more samples than can potentially fit in the output buffer. */ - if (framesToRead * bytesPerFrame > DRWAV_SIZE_MAX) { - framesToRead = DRWAV_SIZE_MAX / bytesPerFrame; - } - - bytesRead = drwav_read_raw(pWav, (size_t)(framesToRead * bytesPerFrame), pBufferOut); - return bytesRead / bytesPerFrame; -} - -drwav_bool32 drwav_seek_to_first_pcm_frame(drwav* pWav) -{ - if (pWav->onWrite != NULL) { - return DRWAV_FALSE; /* No seeking in write mode. */ - } - - if (!pWav->onSeek(pWav->pUserData, (int)pWav->dataChunkDataPos, drwav_seek_origin_start)) { - return DRWAV_FALSE; - } - - if (drwav__is_compressed_format_tag(pWav->translatedFormatTag)) { - pWav->compressed.iCurrentSample = 0; - } - - pWav->bytesRemaining = pWav->dataChunkDataSize; - return DRWAV_TRUE; -} - -drwav_bool32 drwav_seek_to_sample(drwav* pWav, drwav_uint64 sample) -{ - /* Seeking should be compatible with wave files > 2GB. */ - - if (pWav->onWrite != NULL) { - return DRWAV_FALSE; /* No seeking in write mode. */ - } - - if (pWav == NULL || pWav->onSeek == NULL) { - return DRWAV_FALSE; - } - - /* If there are no samples, just return DRWAV_TRUE without doing anything. */ - if (pWav->totalSampleCount == 0) { - return DRWAV_TRUE; - } - - /* Make sure the sample is clamped. */ - if (sample >= pWav->totalSampleCount) { - sample = pWav->totalSampleCount - 1; - } - - /* - For compressed formats we just use a slow generic seek. If we are seeking forward we just seek forward. If we are going backwards we need - to seek back to the start. - */ - if (drwav__is_compressed_format_tag(pWav->translatedFormatTag)) { - /* TODO: This can be optimized. */ - - /* - If we're seeking forward it's simple - just keep reading samples until we hit the sample we're requesting. If we're seeking backwards, - we first need to seek back to the start and then just do the same thing as a forward seek. - */ - if (sample < pWav->compressed.iCurrentSample) { - if (!drwav_seek_to_first_pcm_frame(pWav)) { - return DRWAV_FALSE; - } - } - - if (sample > pWav->compressed.iCurrentSample) { - drwav_uint64 offset = sample - pWav->compressed.iCurrentSample; - - drwav_int16 devnull[2048]; - while (offset > 0) { - drwav_uint64 samplesRead = 0; - drwav_uint64 samplesToRead = offset; - if (samplesToRead > 2048) { - samplesToRead = 2048; - } - - if (pWav->translatedFormatTag == DR_WAVE_FORMAT_ADPCM) { - samplesRead = drwav_read_s16__msadpcm(pWav, samplesToRead, devnull); - } else if (pWav->translatedFormatTag == DR_WAVE_FORMAT_DVI_ADPCM) { - samplesRead = drwav_read_s16__ima(pWav, samplesToRead, devnull); - } else { - assert(DRWAV_FALSE); /* If this assertion is triggered it means I've implemented a new compressed format but forgot to add a branch for it here. */ - } - - if (samplesRead != samplesToRead) { - return DRWAV_FALSE; - } - - offset -= samplesRead; - } - } - } else { - drwav_uint64 totalSizeInBytes; - drwav_uint64 currentBytePos; - drwav_uint64 targetBytePos; - drwav_uint64 offset; - - totalSizeInBytes = pWav->totalPCMFrameCount * drwav_get_bytes_per_pcm_frame(pWav); - drwav_assert(totalSizeInBytes >= pWav->bytesRemaining); - - currentBytePos = totalSizeInBytes - pWav->bytesRemaining; - targetBytePos = sample * drwav_get_bytes_per_sample(pWav); - - if (currentBytePos < targetBytePos) { - /* Offset forwards. */ - offset = (targetBytePos - currentBytePos); - } else { - /* Offset backwards. */ - if (!drwav_seek_to_first_pcm_frame(pWav)) { - return DRWAV_FALSE; - } - offset = targetBytePos; - } - - while (offset > 0) { - int offset32 = ((offset > INT_MAX) ? INT_MAX : (int)offset); - if (!pWav->onSeek(pWav->pUserData, offset32, drwav_seek_origin_current)) { - return DRWAV_FALSE; - } - - pWav->bytesRemaining -= offset32; - offset -= offset32; - } - } - - return DRWAV_TRUE; -} - -drwav_bool32 drwav_seek_to_pcm_frame(drwav* pWav, drwav_uint64 targetFrameIndex) -{ - return drwav_seek_to_sample(pWav, targetFrameIndex * pWav->channels); -} - - -size_t drwav_write_raw(drwav* pWav, size_t bytesToWrite, const void* pData) -{ - size_t bytesWritten; - - if (pWav == NULL || bytesToWrite == 0 || pData == NULL) { - return 0; - } - - bytesWritten = pWav->onWrite(pWav->pUserData, pData, bytesToWrite); - pWav->dataChunkDataSize += bytesWritten; - - return bytesWritten; -} - -drwav_uint64 drwav_write(drwav* pWav, drwav_uint64 samplesToWrite, const void* pData) -{ - drwav_uint64 bytesToWrite; - drwav_uint64 bytesWritten; - const drwav_uint8* pRunningData; - - if (pWav == NULL || samplesToWrite == 0 || pData == NULL) { - return 0; - } - - bytesToWrite = ((samplesToWrite * pWav->bitsPerSample) / 8); - if (bytesToWrite > DRWAV_SIZE_MAX) { - return 0; - } - - bytesWritten = 0; - pRunningData = (const drwav_uint8*)pData; - while (bytesToWrite > 0) { - size_t bytesJustWritten; - drwav_uint64 bytesToWriteThisIteration = bytesToWrite; - if (bytesToWriteThisIteration > DRWAV_SIZE_MAX) { - bytesToWriteThisIteration = DRWAV_SIZE_MAX; - } - - bytesJustWritten = drwav_write_raw(pWav, (size_t)bytesToWriteThisIteration, pRunningData); - if (bytesJustWritten == 0) { - break; - } - - bytesToWrite -= bytesJustWritten; - bytesWritten += bytesJustWritten; - pRunningData += bytesJustWritten; - } - - return (bytesWritten * 8) / pWav->bitsPerSample; -} - -drwav_uint64 drwav_write_pcm_frames(drwav* pWav, drwav_uint64 framesToWrite, const void* pData) -{ - return drwav_write(pWav, framesToWrite * pWav->channels, pData) / pWav->channels; -} - - - -drwav_uint64 drwav_read_s16__msadpcm(drwav* pWav, drwav_uint64 samplesToRead, drwav_int16* pBufferOut) -{ - drwav_uint64 totalSamplesRead = 0; - - drwav_assert(pWav != NULL); - drwav_assert(samplesToRead > 0); - drwav_assert(pBufferOut != NULL); - - /* TODO: Lots of room for optimization here. */ - - while (samplesToRead > 0 && pWav->compressed.iCurrentSample < pWav->totalSampleCount) { - /* If there are no cached samples we need to load a new block. */ - if (pWav->msadpcm.cachedSampleCount == 0 && pWav->msadpcm.bytesRemainingInBlock == 0) { - if (pWav->channels == 1) { - /* Mono. */ - drwav_uint8 header[7]; - if (pWav->onRead(pWav->pUserData, header, sizeof(header)) != sizeof(header)) { - return totalSamplesRead; - } - pWav->msadpcm.bytesRemainingInBlock = pWav->fmt.blockAlign - sizeof(header); - - pWav->msadpcm.predictor[0] = header[0]; - pWav->msadpcm.delta[0] = drwav__bytes_to_s16(header + 1); - pWav->msadpcm.prevSamples[0][1] = (drwav_int32)drwav__bytes_to_s16(header + 3); - pWav->msadpcm.prevSamples[0][0] = (drwav_int32)drwav__bytes_to_s16(header + 5); - pWav->msadpcm.cachedSamples[2] = pWav->msadpcm.prevSamples[0][0]; - pWav->msadpcm.cachedSamples[3] = pWav->msadpcm.prevSamples[0][1]; - pWav->msadpcm.cachedSampleCount = 2; - } else { - /* Stereo. */ - drwav_uint8 header[14]; - if (pWav->onRead(pWav->pUserData, header, sizeof(header)) != sizeof(header)) { - return totalSamplesRead; - } - pWav->msadpcm.bytesRemainingInBlock = pWav->fmt.blockAlign - sizeof(header); - - pWav->msadpcm.predictor[0] = header[0]; - pWav->msadpcm.predictor[1] = header[1]; - pWav->msadpcm.delta[0] = drwav__bytes_to_s16(header + 2); - pWav->msadpcm.delta[1] = drwav__bytes_to_s16(header + 4); - pWav->msadpcm.prevSamples[0][1] = (drwav_int32)drwav__bytes_to_s16(header + 6); - pWav->msadpcm.prevSamples[1][1] = (drwav_int32)drwav__bytes_to_s16(header + 8); - pWav->msadpcm.prevSamples[0][0] = (drwav_int32)drwav__bytes_to_s16(header + 10); - pWav->msadpcm.prevSamples[1][0] = (drwav_int32)drwav__bytes_to_s16(header + 12); - - pWav->msadpcm.cachedSamples[0] = pWav->msadpcm.prevSamples[0][0]; - pWav->msadpcm.cachedSamples[1] = pWav->msadpcm.prevSamples[1][0]; - pWav->msadpcm.cachedSamples[2] = pWav->msadpcm.prevSamples[0][1]; - pWav->msadpcm.cachedSamples[3] = pWav->msadpcm.prevSamples[1][1]; - pWav->msadpcm.cachedSampleCount = 4; - } - } - - /* Output anything that's cached. */ - while (samplesToRead > 0 && pWav->msadpcm.cachedSampleCount > 0 && pWav->compressed.iCurrentSample < pWav->totalSampleCount) { - pBufferOut[0] = (drwav_int16)pWav->msadpcm.cachedSamples[drwav_countof(pWav->msadpcm.cachedSamples) - pWav->msadpcm.cachedSampleCount]; - pWav->msadpcm.cachedSampleCount -= 1; - - pBufferOut += 1; - samplesToRead -= 1; - totalSamplesRead += 1; - pWav->compressed.iCurrentSample += 1; - } - - if (samplesToRead == 0) { - return totalSamplesRead; - } - - - /* - If there's nothing left in the cache, just go ahead and load more. If there's nothing left to load in the current block we just continue to the next - loop iteration which will trigger the loading of a new block. - */ - if (pWav->msadpcm.cachedSampleCount == 0) { - if (pWav->msadpcm.bytesRemainingInBlock == 0) { - continue; - } else { - static drwav_int32 adaptationTable[] = { - 230, 230, 230, 230, 307, 409, 512, 614, - 768, 614, 512, 409, 307, 230, 230, 230 - }; - static drwav_int32 coeff1Table[] = { 256, 512, 0, 192, 240, 460, 392 }; - static drwav_int32 coeff2Table[] = { 0, -256, 0, 64, 0, -208, -232 }; - - drwav_uint8 nibbles; - drwav_int32 nibble0; - drwav_int32 nibble1; - - if (pWav->onRead(pWav->pUserData, &nibbles, 1) != 1) { - return totalSamplesRead; - } - pWav->msadpcm.bytesRemainingInBlock -= 1; - - /* TODO: Optimize away these if statements. */ - nibble0 = ((nibbles & 0xF0) >> 4); if ((nibbles & 0x80)) { nibble0 |= 0xFFFFFFF0UL; } - nibble1 = ((nibbles & 0x0F) >> 0); if ((nibbles & 0x08)) { nibble1 |= 0xFFFFFFF0UL; } - - if (pWav->channels == 1) { - /* Mono. */ - drwav_int32 newSample0; - drwav_int32 newSample1; - - newSample0 = ((pWav->msadpcm.prevSamples[0][1] * coeff1Table[pWav->msadpcm.predictor[0]]) + (pWav->msadpcm.prevSamples[0][0] * coeff2Table[pWav->msadpcm.predictor[0]])) >> 8; - newSample0 += nibble0 * pWav->msadpcm.delta[0]; - newSample0 = drwav_clamp(newSample0, -32768, 32767); - - pWav->msadpcm.delta[0] = (adaptationTable[((nibbles & 0xF0) >> 4)] * pWav->msadpcm.delta[0]) >> 8; - if (pWav->msadpcm.delta[0] < 16) { - pWav->msadpcm.delta[0] = 16; - } - - pWav->msadpcm.prevSamples[0][0] = pWav->msadpcm.prevSamples[0][1]; - pWav->msadpcm.prevSamples[0][1] = newSample0; - - - newSample1 = ((pWav->msadpcm.prevSamples[0][1] * coeff1Table[pWav->msadpcm.predictor[0]]) + (pWav->msadpcm.prevSamples[0][0] * coeff2Table[pWav->msadpcm.predictor[0]])) >> 8; - newSample1 += nibble1 * pWav->msadpcm.delta[0]; - newSample1 = drwav_clamp(newSample1, -32768, 32767); - - pWav->msadpcm.delta[0] = (adaptationTable[((nibbles & 0x0F) >> 0)] * pWav->msadpcm.delta[0]) >> 8; - if (pWav->msadpcm.delta[0] < 16) { - pWav->msadpcm.delta[0] = 16; - } - - pWav->msadpcm.prevSamples[0][0] = pWav->msadpcm.prevSamples[0][1]; - pWav->msadpcm.prevSamples[0][1] = newSample1; - - - pWav->msadpcm.cachedSamples[2] = newSample0; - pWav->msadpcm.cachedSamples[3] = newSample1; - pWav->msadpcm.cachedSampleCount = 2; - } else { - /* Stereo. */ - drwav_int32 newSample0; - drwav_int32 newSample1; - - /* Left. */ - newSample0 = ((pWav->msadpcm.prevSamples[0][1] * coeff1Table[pWav->msadpcm.predictor[0]]) + (pWav->msadpcm.prevSamples[0][0] * coeff2Table[pWav->msadpcm.predictor[0]])) >> 8; - newSample0 += nibble0 * pWav->msadpcm.delta[0]; - newSample0 = drwav_clamp(newSample0, -32768, 32767); - - pWav->msadpcm.delta[0] = (adaptationTable[((nibbles & 0xF0) >> 4)] * pWav->msadpcm.delta[0]) >> 8; - if (pWav->msadpcm.delta[0] < 16) { - pWav->msadpcm.delta[0] = 16; - } - - pWav->msadpcm.prevSamples[0][0] = pWav->msadpcm.prevSamples[0][1]; - pWav->msadpcm.prevSamples[0][1] = newSample0; - - - /* Right. */ - newSample1 = ((pWav->msadpcm.prevSamples[1][1] * coeff1Table[pWav->msadpcm.predictor[1]]) + (pWav->msadpcm.prevSamples[1][0] * coeff2Table[pWav->msadpcm.predictor[1]])) >> 8; - newSample1 += nibble1 * pWav->msadpcm.delta[1]; - newSample1 = drwav_clamp(newSample1, -32768, 32767); - - pWav->msadpcm.delta[1] = (adaptationTable[((nibbles & 0x0F) >> 0)] * pWav->msadpcm.delta[1]) >> 8; - if (pWav->msadpcm.delta[1] < 16) { - pWav->msadpcm.delta[1] = 16; - } - - pWav->msadpcm.prevSamples[1][0] = pWav->msadpcm.prevSamples[1][1]; - pWav->msadpcm.prevSamples[1][1] = newSample1; - - pWav->msadpcm.cachedSamples[2] = newSample0; - pWav->msadpcm.cachedSamples[3] = newSample1; - pWav->msadpcm.cachedSampleCount = 2; - } - } - } - } - - return totalSamplesRead; -} - -drwav_uint64 drwav_read_s16__ima(drwav* pWav, drwav_uint64 samplesToRead, drwav_int16* pBufferOut) -{ - drwav_uint64 totalSamplesRead = 0; - - drwav_assert(pWav != NULL); - drwav_assert(samplesToRead > 0); - drwav_assert(pBufferOut != NULL); - - /* TODO: Lots of room for optimization here. */ - - while (samplesToRead > 0 && pWav->compressed.iCurrentSample < pWav->totalSampleCount) { - /* If there are no cached samples we need to load a new block. */ - if (pWav->ima.cachedSampleCount == 0 && pWav->ima.bytesRemainingInBlock == 0) { - if (pWav->channels == 1) { - /* Mono. */ - drwav_uint8 header[4]; - if (pWav->onRead(pWav->pUserData, header, sizeof(header)) != sizeof(header)) { - return totalSamplesRead; - } - pWav->ima.bytesRemainingInBlock = pWav->fmt.blockAlign - sizeof(header); - - pWav->ima.predictor[0] = drwav__bytes_to_s16(header + 0); - pWav->ima.stepIndex[0] = header[2]; - pWav->ima.cachedSamples[drwav_countof(pWav->ima.cachedSamples) - 1] = pWav->ima.predictor[0]; - pWav->ima.cachedSampleCount = 1; - } else { - /* Stereo. */ - drwav_uint8 header[8]; - if (pWav->onRead(pWav->pUserData, header, sizeof(header)) != sizeof(header)) { - return totalSamplesRead; - } - pWav->ima.bytesRemainingInBlock = pWav->fmt.blockAlign - sizeof(header); - - pWav->ima.predictor[0] = drwav__bytes_to_s16(header + 0); - pWav->ima.stepIndex[0] = header[2]; - pWav->ima.predictor[1] = drwav__bytes_to_s16(header + 4); - pWav->ima.stepIndex[1] = header[6]; - - pWav->ima.cachedSamples[drwav_countof(pWav->ima.cachedSamples) - 2] = pWav->ima.predictor[0]; - pWav->ima.cachedSamples[drwav_countof(pWav->ima.cachedSamples) - 1] = pWav->ima.predictor[1]; - pWav->ima.cachedSampleCount = 2; - } - } - - /* Output anything that's cached. */ - while (samplesToRead > 0 && pWav->ima.cachedSampleCount > 0 && pWav->compressed.iCurrentSample < pWav->totalSampleCount) { - pBufferOut[0] = (drwav_int16)pWav->ima.cachedSamples[drwav_countof(pWav->ima.cachedSamples) - pWav->ima.cachedSampleCount]; - pWav->ima.cachedSampleCount -= 1; - - pBufferOut += 1; - samplesToRead -= 1; - totalSamplesRead += 1; - pWav->compressed.iCurrentSample += 1; - } - - if (samplesToRead == 0) { - return totalSamplesRead; - } - - /* - If there's nothing left in the cache, just go ahead and load more. If there's nothing left to load in the current block we just continue to the next - loop iteration which will trigger the loading of a new block. - */ - if (pWav->ima.cachedSampleCount == 0) { - if (pWav->ima.bytesRemainingInBlock == 0) { - continue; - } else { - static drwav_int32 indexTable[16] = { - -1, -1, -1, -1, 2, 4, 6, 8, - -1, -1, -1, -1, 2, 4, 6, 8 - }; - - static drwav_int32 stepTable[89] = { - 7, 8, 9, 10, 11, 12, 13, 14, 16, 17, - 19, 21, 23, 25, 28, 31, 34, 37, 41, 45, - 50, 55, 60, 66, 73, 80, 88, 97, 107, 118, - 130, 143, 157, 173, 190, 209, 230, 253, 279, 307, - 337, 371, 408, 449, 494, 544, 598, 658, 724, 796, - 876, 963, 1060, 1166, 1282, 1411, 1552, 1707, 1878, 2066, - 2272, 2499, 2749, 3024, 3327, 3660, 4026, 4428, 4871, 5358, - 5894, 6484, 7132, 7845, 8630, 9493, 10442, 11487, 12635, 13899, - 15289, 16818, 18500, 20350, 22385, 24623, 27086, 29794, 32767 - }; - - drwav_uint32 iChannel; - - /* - From what I can tell with stereo streams, it looks like every 4 bytes (8 samples) is for one channel. So it goes 4 bytes for the - left channel, 4 bytes for the right channel. - */ - pWav->ima.cachedSampleCount = 8 * pWav->channels; - for (iChannel = 0; iChannel < pWav->channels; ++iChannel) { - drwav_uint32 iByte; - drwav_uint8 nibbles[4]; - if (pWav->onRead(pWav->pUserData, &nibbles, 4) != 4) { - return totalSamplesRead; - } - pWav->ima.bytesRemainingInBlock -= 4; - - for (iByte = 0; iByte < 4; ++iByte) { - drwav_uint8 nibble0 = ((nibbles[iByte] & 0x0F) >> 0); - drwav_uint8 nibble1 = ((nibbles[iByte] & 0xF0) >> 4); - - drwav_int32 step = stepTable[pWav->ima.stepIndex[iChannel]]; - drwav_int32 predictor = pWav->ima.predictor[iChannel]; - - drwav_int32 diff = step >> 3; - if (nibble0 & 1) diff += step >> 2; - if (nibble0 & 2) diff += step >> 1; - if (nibble0 & 4) diff += step; - if (nibble0 & 8) diff = -diff; - - predictor = drwav_clamp(predictor + diff, -32768, 32767); - pWav->ima.predictor[iChannel] = predictor; - pWav->ima.stepIndex[iChannel] = drwav_clamp(pWav->ima.stepIndex[iChannel] + indexTable[nibble0], 0, (drwav_int32)drwav_countof(stepTable)-1); - pWav->ima.cachedSamples[(drwav_countof(pWav->ima.cachedSamples) - pWav->ima.cachedSampleCount) + (iByte*2+0)*pWav->channels + iChannel] = predictor; - - - step = stepTable[pWav->ima.stepIndex[iChannel]]; - predictor = pWav->ima.predictor[iChannel]; - - diff = step >> 3; - if (nibble1 & 1) diff += step >> 2; - if (nibble1 & 2) diff += step >> 1; - if (nibble1 & 4) diff += step; - if (nibble1 & 8) diff = -diff; - - predictor = drwav_clamp(predictor + diff, -32768, 32767); - pWav->ima.predictor[iChannel] = predictor; - pWav->ima.stepIndex[iChannel] = drwav_clamp(pWav->ima.stepIndex[iChannel] + indexTable[nibble1], 0, (drwav_int32)drwav_countof(stepTable)-1); - pWav->ima.cachedSamples[(drwav_countof(pWav->ima.cachedSamples) - pWav->ima.cachedSampleCount) + (iByte*2+1)*pWav->channels + iChannel] = predictor; - } - } - } - } - } - - return totalSamplesRead; -} - - -#ifndef DR_WAV_NO_CONVERSION_API -static unsigned short g_drwavAlawTable[256] = { - 0xEA80, 0xEB80, 0xE880, 0xE980, 0xEE80, 0xEF80, 0xEC80, 0xED80, 0xE280, 0xE380, 0xE080, 0xE180, 0xE680, 0xE780, 0xE480, 0xE580, - 0xF540, 0xF5C0, 0xF440, 0xF4C0, 0xF740, 0xF7C0, 0xF640, 0xF6C0, 0xF140, 0xF1C0, 0xF040, 0xF0C0, 0xF340, 0xF3C0, 0xF240, 0xF2C0, - 0xAA00, 0xAE00, 0xA200, 0xA600, 0xBA00, 0xBE00, 0xB200, 0xB600, 0x8A00, 0x8E00, 0x8200, 0x8600, 0x9A00, 0x9E00, 0x9200, 0x9600, - 0xD500, 0xD700, 0xD100, 0xD300, 0xDD00, 0xDF00, 0xD900, 0xDB00, 0xC500, 0xC700, 0xC100, 0xC300, 0xCD00, 0xCF00, 0xC900, 0xCB00, - 0xFEA8, 0xFEB8, 0xFE88, 0xFE98, 0xFEE8, 0xFEF8, 0xFEC8, 0xFED8, 0xFE28, 0xFE38, 0xFE08, 0xFE18, 0xFE68, 0xFE78, 0xFE48, 0xFE58, - 0xFFA8, 0xFFB8, 0xFF88, 0xFF98, 0xFFE8, 0xFFF8, 0xFFC8, 0xFFD8, 0xFF28, 0xFF38, 0xFF08, 0xFF18, 0xFF68, 0xFF78, 0xFF48, 0xFF58, - 0xFAA0, 0xFAE0, 0xFA20, 0xFA60, 0xFBA0, 0xFBE0, 0xFB20, 0xFB60, 0xF8A0, 0xF8E0, 0xF820, 0xF860, 0xF9A0, 0xF9E0, 0xF920, 0xF960, - 0xFD50, 0xFD70, 0xFD10, 0xFD30, 0xFDD0, 0xFDF0, 0xFD90, 0xFDB0, 0xFC50, 0xFC70, 0xFC10, 0xFC30, 0xFCD0, 0xFCF0, 0xFC90, 0xFCB0, - 0x1580, 0x1480, 0x1780, 0x1680, 0x1180, 0x1080, 0x1380, 0x1280, 0x1D80, 0x1C80, 0x1F80, 0x1E80, 0x1980, 0x1880, 0x1B80, 0x1A80, - 0x0AC0, 0x0A40, 0x0BC0, 0x0B40, 0x08C0, 0x0840, 0x09C0, 0x0940, 0x0EC0, 0x0E40, 0x0FC0, 0x0F40, 0x0CC0, 0x0C40, 0x0DC0, 0x0D40, - 0x5600, 0x5200, 0x5E00, 0x5A00, 0x4600, 0x4200, 0x4E00, 0x4A00, 0x7600, 0x7200, 0x7E00, 0x7A00, 0x6600, 0x6200, 0x6E00, 0x6A00, - 0x2B00, 0x2900, 0x2F00, 0x2D00, 0x2300, 0x2100, 0x2700, 0x2500, 0x3B00, 0x3900, 0x3F00, 0x3D00, 0x3300, 0x3100, 0x3700, 0x3500, - 0x0158, 0x0148, 0x0178, 0x0168, 0x0118, 0x0108, 0x0138, 0x0128, 0x01D8, 0x01C8, 0x01F8, 0x01E8, 0x0198, 0x0188, 0x01B8, 0x01A8, - 0x0058, 0x0048, 0x0078, 0x0068, 0x0018, 0x0008, 0x0038, 0x0028, 0x00D8, 0x00C8, 0x00F8, 0x00E8, 0x0098, 0x0088, 0x00B8, 0x00A8, - 0x0560, 0x0520, 0x05E0, 0x05A0, 0x0460, 0x0420, 0x04E0, 0x04A0, 0x0760, 0x0720, 0x07E0, 0x07A0, 0x0660, 0x0620, 0x06E0, 0x06A0, - 0x02B0, 0x0290, 0x02F0, 0x02D0, 0x0230, 0x0210, 0x0270, 0x0250, 0x03B0, 0x0390, 0x03F0, 0x03D0, 0x0330, 0x0310, 0x0370, 0x0350 -}; - -static unsigned short g_drwavMulawTable[256] = { - 0x8284, 0x8684, 0x8A84, 0x8E84, 0x9284, 0x9684, 0x9A84, 0x9E84, 0xA284, 0xA684, 0xAA84, 0xAE84, 0xB284, 0xB684, 0xBA84, 0xBE84, - 0xC184, 0xC384, 0xC584, 0xC784, 0xC984, 0xCB84, 0xCD84, 0xCF84, 0xD184, 0xD384, 0xD584, 0xD784, 0xD984, 0xDB84, 0xDD84, 0xDF84, - 0xE104, 0xE204, 0xE304, 0xE404, 0xE504, 0xE604, 0xE704, 0xE804, 0xE904, 0xEA04, 0xEB04, 0xEC04, 0xED04, 0xEE04, 0xEF04, 0xF004, - 0xF0C4, 0xF144, 0xF1C4, 0xF244, 0xF2C4, 0xF344, 0xF3C4, 0xF444, 0xF4C4, 0xF544, 0xF5C4, 0xF644, 0xF6C4, 0xF744, 0xF7C4, 0xF844, - 0xF8A4, 0xF8E4, 0xF924, 0xF964, 0xF9A4, 0xF9E4, 0xFA24, 0xFA64, 0xFAA4, 0xFAE4, 0xFB24, 0xFB64, 0xFBA4, 0xFBE4, 0xFC24, 0xFC64, - 0xFC94, 0xFCB4, 0xFCD4, 0xFCF4, 0xFD14, 0xFD34, 0xFD54, 0xFD74, 0xFD94, 0xFDB4, 0xFDD4, 0xFDF4, 0xFE14, 0xFE34, 0xFE54, 0xFE74, - 0xFE8C, 0xFE9C, 0xFEAC, 0xFEBC, 0xFECC, 0xFEDC, 0xFEEC, 0xFEFC, 0xFF0C, 0xFF1C, 0xFF2C, 0xFF3C, 0xFF4C, 0xFF5C, 0xFF6C, 0xFF7C, - 0xFF88, 0xFF90, 0xFF98, 0xFFA0, 0xFFA8, 0xFFB0, 0xFFB8, 0xFFC0, 0xFFC8, 0xFFD0, 0xFFD8, 0xFFE0, 0xFFE8, 0xFFF0, 0xFFF8, 0x0000, - 0x7D7C, 0x797C, 0x757C, 0x717C, 0x6D7C, 0x697C, 0x657C, 0x617C, 0x5D7C, 0x597C, 0x557C, 0x517C, 0x4D7C, 0x497C, 0x457C, 0x417C, - 0x3E7C, 0x3C7C, 0x3A7C, 0x387C, 0x367C, 0x347C, 0x327C, 0x307C, 0x2E7C, 0x2C7C, 0x2A7C, 0x287C, 0x267C, 0x247C, 0x227C, 0x207C, - 0x1EFC, 0x1DFC, 0x1CFC, 0x1BFC, 0x1AFC, 0x19FC, 0x18FC, 0x17FC, 0x16FC, 0x15FC, 0x14FC, 0x13FC, 0x12FC, 0x11FC, 0x10FC, 0x0FFC, - 0x0F3C, 0x0EBC, 0x0E3C, 0x0DBC, 0x0D3C, 0x0CBC, 0x0C3C, 0x0BBC, 0x0B3C, 0x0ABC, 0x0A3C, 0x09BC, 0x093C, 0x08BC, 0x083C, 0x07BC, - 0x075C, 0x071C, 0x06DC, 0x069C, 0x065C, 0x061C, 0x05DC, 0x059C, 0x055C, 0x051C, 0x04DC, 0x049C, 0x045C, 0x041C, 0x03DC, 0x039C, - 0x036C, 0x034C, 0x032C, 0x030C, 0x02EC, 0x02CC, 0x02AC, 0x028C, 0x026C, 0x024C, 0x022C, 0x020C, 0x01EC, 0x01CC, 0x01AC, 0x018C, - 0x0174, 0x0164, 0x0154, 0x0144, 0x0134, 0x0124, 0x0114, 0x0104, 0x00F4, 0x00E4, 0x00D4, 0x00C4, 0x00B4, 0x00A4, 0x0094, 0x0084, - 0x0078, 0x0070, 0x0068, 0x0060, 0x0058, 0x0050, 0x0048, 0x0040, 0x0038, 0x0030, 0x0028, 0x0020, 0x0018, 0x0010, 0x0008, 0x0000 -}; - -static DRWAV_INLINE drwav_int16 drwav__alaw_to_s16(drwav_uint8 sampleIn) -{ - return (short)g_drwavAlawTable[sampleIn]; -} - -static DRWAV_INLINE drwav_int16 drwav__mulaw_to_s16(drwav_uint8 sampleIn) -{ - return (short)g_drwavMulawTable[sampleIn]; -} - - - -static void drwav__pcm_to_s16(drwav_int16* pOut, const unsigned char* pIn, size_t totalSampleCount, unsigned int bytesPerSample) -{ - unsigned int i; - - /* Special case for 8-bit sample data because it's treated as unsigned. */ - if (bytesPerSample == 1) { - drwav_u8_to_s16(pOut, pIn, totalSampleCount); - return; - } - - - /* Slightly more optimal implementation for common formats. */ - if (bytesPerSample == 2) { - for (i = 0; i < totalSampleCount; ++i) { - *pOut++ = ((const drwav_int16*)pIn)[i]; - } - return; - } - if (bytesPerSample == 3) { - drwav_s24_to_s16(pOut, pIn, totalSampleCount); - return; - } - if (bytesPerSample == 4) { - drwav_s32_to_s16(pOut, (const drwav_int32*)pIn, totalSampleCount); - return; - } - - - /* Anything more than 64 bits per sample is not supported. */ - if (bytesPerSample > 8) { - drwav_zero_memory(pOut, totalSampleCount * sizeof(*pOut)); - return; - } - - - /* Generic, slow converter. */ - for (i = 0; i < totalSampleCount; ++i) { - drwav_uint64 sample = 0; - unsigned int shift = (8 - bytesPerSample) * 8; - - unsigned int j; - for (j = 0; j < bytesPerSample && j < 8; j += 1) { - sample |= (drwav_uint64)(pIn[j]) << shift; - shift += 8; - } - - pIn += j; - *pOut++ = (drwav_int16)((drwav_int64)sample >> 48); - } -} - -static void drwav__ieee_to_s16(drwav_int16* pOut, const unsigned char* pIn, size_t totalSampleCount, unsigned int bytesPerSample) -{ - if (bytesPerSample == 4) { - drwav_f32_to_s16(pOut, (const float*)pIn, totalSampleCount); - return; - } else if (bytesPerSample == 8) { - drwav_f64_to_s16(pOut, (const double*)pIn, totalSampleCount); - return; - } else { - /* Only supporting 32- and 64-bit float. Output silence in all other cases. Contributions welcome for 16-bit float. */ - drwav_zero_memory(pOut, totalSampleCount * sizeof(*pOut)); - return; - } -} - -drwav_uint64 drwav_read_s16__pcm(drwav* pWav, drwav_uint64 samplesToRead, drwav_int16* pBufferOut) -{ - drwav_uint32 bytesPerSample; - drwav_uint64 totalSamplesRead; - unsigned char sampleData[4096]; - - /* Fast path. */ - if (pWav->translatedFormatTag == DR_WAVE_FORMAT_PCM && pWav->bitsPerSample == 16) { - return drwav_read(pWav, samplesToRead, pBufferOut); - } - - bytesPerSample = drwav_get_bytes_per_sample(pWav); - if (bytesPerSample == 0) { - return 0; - } - - totalSamplesRead = 0; - - while (samplesToRead > 0) { - drwav_uint64 samplesRead = drwav_read(pWav, drwav_min(samplesToRead, sizeof(sampleData)/bytesPerSample), sampleData); - if (samplesRead == 0) { - break; - } - - drwav__pcm_to_s16(pBufferOut, sampleData, (size_t)samplesRead, bytesPerSample); - - pBufferOut += samplesRead; - samplesToRead -= samplesRead; - totalSamplesRead += samplesRead; - } - - return totalSamplesRead; -} - -drwav_uint64 drwav_read_s16__ieee(drwav* pWav, drwav_uint64 samplesToRead, drwav_int16* pBufferOut) -{ - drwav_uint64 totalSamplesRead; - unsigned char sampleData[4096]; - - drwav_uint32 bytesPerSample = drwav_get_bytes_per_sample(pWav); - if (bytesPerSample == 0) { - return 0; - } - - totalSamplesRead = 0; - - while (samplesToRead > 0) { - drwav_uint64 samplesRead = drwav_read(pWav, drwav_min(samplesToRead, sizeof(sampleData)/bytesPerSample), sampleData); - if (samplesRead == 0) { - break; - } - - drwav__ieee_to_s16(pBufferOut, sampleData, (size_t)samplesRead, bytesPerSample); - - pBufferOut += samplesRead; - samplesToRead -= samplesRead; - totalSamplesRead += samplesRead; - } - - return totalSamplesRead; -} - -drwav_uint64 drwav_read_s16__alaw(drwav* pWav, drwav_uint64 samplesToRead, drwav_int16* pBufferOut) -{ - drwav_uint64 totalSamplesRead; - unsigned char sampleData[4096]; - - drwav_uint32 bytesPerSample = drwav_get_bytes_per_sample(pWav); - if (bytesPerSample == 0) { - return 0; - } - - totalSamplesRead = 0; - - while (samplesToRead > 0) { - drwav_uint64 samplesRead = drwav_read(pWav, drwav_min(samplesToRead, sizeof(sampleData)/bytesPerSample), sampleData); - if (samplesRead == 0) { - break; - } - - drwav_alaw_to_s16(pBufferOut, sampleData, (size_t)samplesRead); - - pBufferOut += samplesRead; - samplesToRead -= samplesRead; - totalSamplesRead += samplesRead; - } - - return totalSamplesRead; -} - -drwav_uint64 drwav_read_s16__mulaw(drwav* pWav, drwav_uint64 samplesToRead, drwav_int16* pBufferOut) -{ - drwav_uint64 totalSamplesRead; - unsigned char sampleData[4096]; - - drwav_uint32 bytesPerSample = drwav_get_bytes_per_sample(pWav); - if (bytesPerSample == 0) { - return 0; - } - - totalSamplesRead = 0; - - while (samplesToRead > 0) { - drwav_uint64 samplesRead = drwav_read(pWav, drwav_min(samplesToRead, sizeof(sampleData)/bytesPerSample), sampleData); - if (samplesRead == 0) { - break; - } - - drwav_mulaw_to_s16(pBufferOut, sampleData, (size_t)samplesRead); - - pBufferOut += samplesRead; - samplesToRead -= samplesRead; - totalSamplesRead += samplesRead; - } - - return totalSamplesRead; -} - -drwav_uint64 drwav_read_s16(drwav* pWav, drwav_uint64 samplesToRead, drwav_int16* pBufferOut) -{ - if (pWav == NULL || samplesToRead == 0 || pBufferOut == NULL) { - return 0; - } - - /* Don't try to read more samples than can potentially fit in the output buffer. */ - if (samplesToRead * sizeof(drwav_int16) > DRWAV_SIZE_MAX) { - samplesToRead = DRWAV_SIZE_MAX / sizeof(drwav_int16); - } - - if (pWav->translatedFormatTag == DR_WAVE_FORMAT_PCM) { - return drwav_read_s16__pcm(pWav, samplesToRead, pBufferOut); - } - - if (pWav->translatedFormatTag == DR_WAVE_FORMAT_ADPCM) { - return drwav_read_s16__msadpcm(pWav, samplesToRead, pBufferOut); - } - - if (pWav->translatedFormatTag == DR_WAVE_FORMAT_IEEE_FLOAT) { - return drwav_read_s16__ieee(pWav, samplesToRead, pBufferOut); - } - - if (pWav->translatedFormatTag == DR_WAVE_FORMAT_ALAW) { - return drwav_read_s16__alaw(pWav, samplesToRead, pBufferOut); - } - - if (pWav->translatedFormatTag == DR_WAVE_FORMAT_MULAW) { - return drwav_read_s16__mulaw(pWav, samplesToRead, pBufferOut); - } - - if (pWav->translatedFormatTag == DR_WAVE_FORMAT_DVI_ADPCM) { - return drwav_read_s16__ima(pWav, samplesToRead, pBufferOut); - } - - return 0; -} - -drwav_uint64 drwav_read_pcm_frames_s16(drwav* pWav, drwav_uint64 framesToRead, drwav_int16* pBufferOut) -{ - return drwav_read_s16(pWav, framesToRead * pWav->channels, pBufferOut) / pWav->channels; -} - -void drwav_u8_to_s16(drwav_int16* pOut, const drwav_uint8* pIn, size_t sampleCount) -{ - int r; - size_t i; - for (i = 0; i < sampleCount; ++i) { - int x = pIn[i]; - r = x << 8; - r = r - 32768; - pOut[i] = (short)r; - } -} - -void drwav_s24_to_s16(drwav_int16* pOut, const drwav_uint8* pIn, size_t sampleCount) -{ - int r; - size_t i; - for (i = 0; i < sampleCount; ++i) { - int x = ((int)(((unsigned int)(((const unsigned char*)pIn)[i*3+0]) << 8) | ((unsigned int)(((const unsigned char*)pIn)[i*3+1]) << 16) | ((unsigned int)(((const unsigned char*)pIn)[i*3+2])) << 24)) >> 8; - r = x >> 8; - pOut[i] = (short)r; - } -} - -void drwav_s32_to_s16(drwav_int16* pOut, const drwav_int32* pIn, size_t sampleCount) -{ - int r; - size_t i; - for (i = 0; i < sampleCount; ++i) { - int x = pIn[i]; - r = x >> 16; - pOut[i] = (short)r; - } -} - -void drwav_f32_to_s16(drwav_int16* pOut, const float* pIn, size_t sampleCount) -{ - int r; - size_t i; - for (i = 0; i < sampleCount; ++i) { - float x = pIn[i]; - float c; - c = ((x < -1) ? -1 : ((x > 1) ? 1 : x)); - c = c + 1; - r = (int)(c * 32767.5f); - r = r - 32768; - pOut[i] = (short)r; - } -} - -void drwav_f64_to_s16(drwav_int16* pOut, const double* pIn, size_t sampleCount) -{ - int r; - size_t i; - for (i = 0; i < sampleCount; ++i) { - double x = pIn[i]; - double c; - c = ((x < -1) ? -1 : ((x > 1) ? 1 : x)); - c = c + 1; - r = (int)(c * 32767.5); - r = r - 32768; - pOut[i] = (short)r; - } -} - -void drwav_alaw_to_s16(drwav_int16* pOut, const drwav_uint8* pIn, size_t sampleCount) -{ - size_t i; - for (i = 0; i < sampleCount; ++i) { - pOut[i] = drwav__alaw_to_s16(pIn[i]); - } -} - -void drwav_mulaw_to_s16(drwav_int16* pOut, const drwav_uint8* pIn, size_t sampleCount) -{ - size_t i; - for (i = 0; i < sampleCount; ++i) { - pOut[i] = drwav__mulaw_to_s16(pIn[i]); - } -} - - - -static void drwav__pcm_to_f32(float* pOut, const unsigned char* pIn, size_t sampleCount, unsigned int bytesPerSample) -{ - unsigned int i; - - /* Special case for 8-bit sample data because it's treated as unsigned. */ - if (bytesPerSample == 1) { - drwav_u8_to_f32(pOut, pIn, sampleCount); - return; - } - - /* Slightly more optimal implementation for common formats. */ - if (bytesPerSample == 2) { - drwav_s16_to_f32(pOut, (const drwav_int16*)pIn, sampleCount); - return; - } - if (bytesPerSample == 3) { - drwav_s24_to_f32(pOut, pIn, sampleCount); - return; - } - if (bytesPerSample == 4) { - drwav_s32_to_f32(pOut, (const drwav_int32*)pIn, sampleCount); - return; - } - - - /* Anything more than 64 bits per sample is not supported. */ - if (bytesPerSample > 8) { - drwav_zero_memory(pOut, sampleCount * sizeof(*pOut)); - return; - } - - - /* Generic, slow converter. */ - for (i = 0; i < sampleCount; ++i) { - drwav_uint64 sample = 0; - unsigned int shift = (8 - bytesPerSample) * 8; - - unsigned int j; - for (j = 0; j < bytesPerSample && j < 8; j += 1) { - sample |= (drwav_uint64)(pIn[j]) << shift; - shift += 8; - } - - pIn += j; - *pOut++ = (float)((drwav_int64)sample / 9223372036854775807.0); - } -} - -static void drwav__ieee_to_f32(float* pOut, const unsigned char* pIn, size_t sampleCount, unsigned int bytesPerSample) -{ - if (bytesPerSample == 4) { - unsigned int i; - for (i = 0; i < sampleCount; ++i) { - *pOut++ = ((const float*)pIn)[i]; - } - return; - } else if (bytesPerSample == 8) { - drwav_f64_to_f32(pOut, (const double*)pIn, sampleCount); - return; - } else { - /* Only supporting 32- and 64-bit float. Output silence in all other cases. Contributions welcome for 16-bit float. */ - drwav_zero_memory(pOut, sampleCount * sizeof(*pOut)); - return; - } -} - - -drwav_uint64 drwav_read_f32__pcm(drwav* pWav, drwav_uint64 samplesToRead, float* pBufferOut) -{ - drwav_uint64 totalSamplesRead; - unsigned char sampleData[4096]; - - drwav_uint32 bytesPerSample = drwav_get_bytes_per_sample(pWav); - if (bytesPerSample == 0) { - return 0; - } - - totalSamplesRead = 0; - - while (samplesToRead > 0) { - drwav_uint64 samplesRead = drwav_read(pWav, drwav_min(samplesToRead, sizeof(sampleData)/bytesPerSample), sampleData); - if (samplesRead == 0) { - break; - } - - drwav__pcm_to_f32(pBufferOut, sampleData, (size_t)samplesRead, bytesPerSample); - pBufferOut += samplesRead; - - samplesToRead -= samplesRead; - totalSamplesRead += samplesRead; - } - - return totalSamplesRead; -} - -drwav_uint64 drwav_read_f32__msadpcm(drwav* pWav, drwav_uint64 samplesToRead, float* pBufferOut) -{ - /* - We're just going to borrow the implementation from the drwav_read_s16() since ADPCM is a little bit more complicated than other formats and I don't - want to duplicate that code. - */ - drwav_uint64 totalSamplesRead = 0; - drwav_int16 samples16[2048]; - while (samplesToRead > 0) { - drwav_uint64 samplesRead = drwav_read_s16(pWav, drwav_min(samplesToRead, 2048), samples16); - if (samplesRead == 0) { - break; - } - - drwav_s16_to_f32(pBufferOut, samples16, (size_t)samplesRead); /* <-- Safe cast because we're clamping to 2048. */ - - pBufferOut += samplesRead; - samplesToRead -= samplesRead; - totalSamplesRead += samplesRead; - } - - return totalSamplesRead; -} - -drwav_uint64 drwav_read_f32__ima(drwav* pWav, drwav_uint64 samplesToRead, float* pBufferOut) -{ - /* - We're just going to borrow the implementation from the drwav_read_s16() since IMA-ADPCM is a little bit more complicated than other formats and I don't - want to duplicate that code. - */ - drwav_uint64 totalSamplesRead = 0; - drwav_int16 samples16[2048]; - while (samplesToRead > 0) { - drwav_uint64 samplesRead = drwav_read_s16(pWav, drwav_min(samplesToRead, 2048), samples16); - if (samplesRead == 0) { - break; - } - - drwav_s16_to_f32(pBufferOut, samples16, (size_t)samplesRead); /* <-- Safe cast because we're clamping to 2048. */ - - pBufferOut += samplesRead; - samplesToRead -= samplesRead; - totalSamplesRead += samplesRead; - } - - return totalSamplesRead; -} - -drwav_uint64 drwav_read_f32__ieee(drwav* pWav, drwav_uint64 samplesToRead, float* pBufferOut) -{ - drwav_uint64 totalSamplesRead; - unsigned char sampleData[4096]; - drwav_uint32 bytesPerSample; - - /* Fast path. */ - if (pWav->translatedFormatTag == DR_WAVE_FORMAT_IEEE_FLOAT && pWav->bitsPerSample == 32) { - return drwav_read(pWav, samplesToRead, pBufferOut); - } - - bytesPerSample = drwav_get_bytes_per_sample(pWav); - if (bytesPerSample == 0) { - return 0; - } - - totalSamplesRead = 0; - - while (samplesToRead > 0) { - drwav_uint64 samplesRead = drwav_read(pWav, drwav_min(samplesToRead, sizeof(sampleData)/bytesPerSample), sampleData); - if (samplesRead == 0) { - break; - } - - drwav__ieee_to_f32(pBufferOut, sampleData, (size_t)samplesRead, bytesPerSample); - - pBufferOut += samplesRead; - samplesToRead -= samplesRead; - totalSamplesRead += samplesRead; - } - - return totalSamplesRead; -} - -drwav_uint64 drwav_read_f32__alaw(drwav* pWav, drwav_uint64 samplesToRead, float* pBufferOut) -{ - drwav_uint64 totalSamplesRead; - unsigned char sampleData[4096]; - drwav_uint32 bytesPerSample = drwav_get_bytes_per_sample(pWav); - if (bytesPerSample == 0) { - return 0; - } - - totalSamplesRead = 0; - - while (samplesToRead > 0) { - drwav_uint64 samplesRead = drwav_read(pWav, drwav_min(samplesToRead, sizeof(sampleData)/bytesPerSample), sampleData); - if (samplesRead == 0) { - break; - } - - drwav_alaw_to_f32(pBufferOut, sampleData, (size_t)samplesRead); - - pBufferOut += samplesRead; - samplesToRead -= samplesRead; - totalSamplesRead += samplesRead; - } - - return totalSamplesRead; -} - -drwav_uint64 drwav_read_f32__mulaw(drwav* pWav, drwav_uint64 samplesToRead, float* pBufferOut) -{ - drwav_uint64 totalSamplesRead; - unsigned char sampleData[4096]; - - drwav_uint32 bytesPerSample = drwav_get_bytes_per_sample(pWav); - if (bytesPerSample == 0) { - return 0; - } - - totalSamplesRead = 0; - - while (samplesToRead > 0) { - drwav_uint64 samplesRead = drwav_read(pWav, drwav_min(samplesToRead, sizeof(sampleData)/bytesPerSample), sampleData); - if (samplesRead == 0) { - break; - } - - drwav_mulaw_to_f32(pBufferOut, sampleData, (size_t)samplesRead); - - pBufferOut += samplesRead; - samplesToRead -= samplesRead; - totalSamplesRead += samplesRead; - } - - return totalSamplesRead; -} - -drwav_uint64 drwav_read_f32(drwav* pWav, drwav_uint64 samplesToRead, float* pBufferOut) -{ - if (pWav == NULL || samplesToRead == 0 || pBufferOut == NULL) { - return 0; - } - - /* Don't try to read more samples than can potentially fit in the output buffer. */ - if (samplesToRead * sizeof(float) > DRWAV_SIZE_MAX) { - samplesToRead = DRWAV_SIZE_MAX / sizeof(float); - } - - if (pWav->translatedFormatTag == DR_WAVE_FORMAT_PCM) { - return drwav_read_f32__pcm(pWav, samplesToRead, pBufferOut); - } - - if (pWav->translatedFormatTag == DR_WAVE_FORMAT_ADPCM) { - return drwav_read_f32__msadpcm(pWav, samplesToRead, pBufferOut); - } - - if (pWav->translatedFormatTag == DR_WAVE_FORMAT_IEEE_FLOAT) { - return drwav_read_f32__ieee(pWav, samplesToRead, pBufferOut); - } - - if (pWav->translatedFormatTag == DR_WAVE_FORMAT_ALAW) { - return drwav_read_f32__alaw(pWav, samplesToRead, pBufferOut); - } - - if (pWav->translatedFormatTag == DR_WAVE_FORMAT_MULAW) { - return drwav_read_f32__mulaw(pWav, samplesToRead, pBufferOut); - } - - if (pWav->translatedFormatTag == DR_WAVE_FORMAT_DVI_ADPCM) { - return drwav_read_f32__ima(pWav, samplesToRead, pBufferOut); - } - - return 0; -} - -drwav_uint64 drwav_read_pcm_frames_f32(drwav* pWav, drwav_uint64 framesToRead, float* pBufferOut) -{ - return drwav_read_f32(pWav, framesToRead * pWav->channels, pBufferOut) / pWav->channels; -} - -void drwav_u8_to_f32(float* pOut, const drwav_uint8* pIn, size_t sampleCount) -{ - size_t i; - - if (pOut == NULL || pIn == NULL) { - return; - } - -#ifdef DR_WAV_LIBSNDFILE_COMPAT - /* - It appears libsndfile uses slightly different logic for the u8 -> f32 conversion to dr_wav, which in my opinion is incorrect. It appears - libsndfile performs the conversion something like "f32 = (u8 / 256) * 2 - 1", however I think it should be "f32 = (u8 / 255) * 2 - 1" (note - the divisor of 256 vs 255). I use libsndfile as a benchmark for testing, so I'm therefore leaving this block here just for my automated - correctness testing. This is disabled by default. - */ - for (i = 0; i < sampleCount; ++i) { - *pOut++ = (pIn[i] / 256.0f) * 2 - 1; - } -#else - for (i = 0; i < sampleCount; ++i) { - *pOut++ = (pIn[i] / 255.0f) * 2 - 1; - } -#endif -} - -void drwav_s16_to_f32(float* pOut, const drwav_int16* pIn, size_t sampleCount) -{ - size_t i; - - if (pOut == NULL || pIn == NULL) { - return; - } - - for (i = 0; i < sampleCount; ++i) { - *pOut++ = pIn[i] / 32768.0f; - } -} - -void drwav_s24_to_f32(float* pOut, const drwav_uint8* pIn, size_t sampleCount) -{ - size_t i; - - if (pOut == NULL || pIn == NULL) { - return; - } - - for (i = 0; i < sampleCount; ++i) { - unsigned int s0 = pIn[i*3 + 0]; - unsigned int s1 = pIn[i*3 + 1]; - unsigned int s2 = pIn[i*3 + 2]; - - int sample32 = (int)((s0 << 8) | (s1 << 16) | (s2 << 24)); - *pOut++ = (float)(sample32 / 2147483648.0); - } -} - -void drwav_s32_to_f32(float* pOut, const drwav_int32* pIn, size_t sampleCount) -{ - size_t i; - if (pOut == NULL || pIn == NULL) { - return; - } - - for (i = 0; i < sampleCount; ++i) { - *pOut++ = (float)(pIn[i] / 2147483648.0); - } -} - -void drwav_f64_to_f32(float* pOut, const double* pIn, size_t sampleCount) -{ - size_t i; - - if (pOut == NULL || pIn == NULL) { - return; - } - - for (i = 0; i < sampleCount; ++i) { - *pOut++ = (float)pIn[i]; - } -} - -void drwav_alaw_to_f32(float* pOut, const drwav_uint8* pIn, size_t sampleCount) -{ - size_t i; - - if (pOut == NULL || pIn == NULL) { - return; - } - - for (i = 0; i < sampleCount; ++i) { - *pOut++ = drwav__alaw_to_s16(pIn[i]) / 32768.0f; - } -} - -void drwav_mulaw_to_f32(float* pOut, const drwav_uint8* pIn, size_t sampleCount) -{ - size_t i; - - if (pOut == NULL || pIn == NULL) { - return; - } - - for (i = 0; i < sampleCount; ++i) { - *pOut++ = drwav__mulaw_to_s16(pIn[i]) / 32768.0f; - } -} - - - -static void drwav__pcm_to_s32(drwav_int32* pOut, const unsigned char* pIn, size_t totalSampleCount, unsigned int bytesPerSample) -{ - unsigned int i; - - /* Special case for 8-bit sample data because it's treated as unsigned. */ - if (bytesPerSample == 1) { - drwav_u8_to_s32(pOut, pIn, totalSampleCount); - return; - } - - /* Slightly more optimal implementation for common formats. */ - if (bytesPerSample == 2) { - drwav_s16_to_s32(pOut, (const drwav_int16*)pIn, totalSampleCount); - return; - } - if (bytesPerSample == 3) { - drwav_s24_to_s32(pOut, pIn, totalSampleCount); - return; - } - if (bytesPerSample == 4) { - for (i = 0; i < totalSampleCount; ++i) { - *pOut++ = ((const drwav_int32*)pIn)[i]; - } - return; - } - - - /* Anything more than 64 bits per sample is not supported. */ - if (bytesPerSample > 8) { - drwav_zero_memory(pOut, totalSampleCount * sizeof(*pOut)); - return; - } - - - /* Generic, slow converter. */ - for (i = 0; i < totalSampleCount; ++i) { - drwav_uint64 sample = 0; - unsigned int shift = (8 - bytesPerSample) * 8; - - unsigned int j; - for (j = 0; j < bytesPerSample && j < 8; j += 1) { - sample |= (drwav_uint64)(pIn[j]) << shift; - shift += 8; - } - - pIn += j; - *pOut++ = (drwav_int32)((drwav_int64)sample >> 32); - } -} - -static void drwav__ieee_to_s32(drwav_int32* pOut, const unsigned char* pIn, size_t totalSampleCount, unsigned int bytesPerSample) -{ - if (bytesPerSample == 4) { - drwav_f32_to_s32(pOut, (const float*)pIn, totalSampleCount); - return; - } else if (bytesPerSample == 8) { - drwav_f64_to_s32(pOut, (const double*)pIn, totalSampleCount); - return; - } else { - /* Only supporting 32- and 64-bit float. Output silence in all other cases. Contributions welcome for 16-bit float. */ - drwav_zero_memory(pOut, totalSampleCount * sizeof(*pOut)); - return; - } -} - - -drwav_uint64 drwav_read_s32__pcm(drwav* pWav, drwav_uint64 samplesToRead, drwav_int32* pBufferOut) -{ - drwav_uint64 totalSamplesRead; - unsigned char sampleData[4096]; - drwav_uint32 bytesPerSample; - - /* Fast path. */ - if (pWav->translatedFormatTag == DR_WAVE_FORMAT_PCM && pWav->bitsPerSample == 32) { - return drwav_read(pWav, samplesToRead, pBufferOut); - } - - bytesPerSample = drwav_get_bytes_per_sample(pWav); - if (bytesPerSample == 0) { - return 0; - } - - totalSamplesRead = 0; - - while (samplesToRead > 0) { - drwav_uint64 samplesRead = drwav_read(pWav, drwav_min(samplesToRead, sizeof(sampleData)/bytesPerSample), sampleData); - if (samplesRead == 0) { - break; - } - - drwav__pcm_to_s32(pBufferOut, sampleData, (size_t)samplesRead, bytesPerSample); - - pBufferOut += samplesRead; - samplesToRead -= samplesRead; - totalSamplesRead += samplesRead; - } - - return totalSamplesRead; -} - -drwav_uint64 drwav_read_s32__msadpcm(drwav* pWav, drwav_uint64 samplesToRead, drwav_int32* pBufferOut) -{ - /* - We're just going to borrow the implementation from the drwav_read_s16() since ADPCM is a little bit more complicated than other formats and I don't - want to duplicate that code. - */ - drwav_uint64 totalSamplesRead = 0; - drwav_int16 samples16[2048]; - while (samplesToRead > 0) { - drwav_uint64 samplesRead = drwav_read_s16(pWav, drwav_min(samplesToRead, 2048), samples16); - if (samplesRead == 0) { - break; - } - - drwav_s16_to_s32(pBufferOut, samples16, (size_t)samplesRead); /* <-- Safe cast because we're clamping to 2048. */ - - pBufferOut += samplesRead; - samplesToRead -= samplesRead; - totalSamplesRead += samplesRead; - } - - return totalSamplesRead; -} - -drwav_uint64 drwav_read_s32__ima(drwav* pWav, drwav_uint64 samplesToRead, drwav_int32* pBufferOut) -{ - /* - We're just going to borrow the implementation from the drwav_read_s16() since IMA-ADPCM is a little bit more complicated than other formats and I don't - want to duplicate that code. - */ - drwav_uint64 totalSamplesRead = 0; - drwav_int16 samples16[2048]; - while (samplesToRead > 0) { - drwav_uint64 samplesRead = drwav_read_s16(pWav, drwav_min(samplesToRead, 2048), samples16); - if (samplesRead == 0) { - break; - } - - drwav_s16_to_s32(pBufferOut, samples16, (size_t)samplesRead); /* <-- Safe cast because we're clamping to 2048. */ - - pBufferOut += samplesRead; - samplesToRead -= samplesRead; - totalSamplesRead += samplesRead; - } - - return totalSamplesRead; -} - -drwav_uint64 drwav_read_s32__ieee(drwav* pWav, drwav_uint64 samplesToRead, drwav_int32* pBufferOut) -{ - drwav_uint64 totalSamplesRead; - unsigned char sampleData[4096]; - - drwav_uint32 bytesPerSample = drwav_get_bytes_per_sample(pWav); - if (bytesPerSample == 0) { - return 0; - } - - totalSamplesRead = 0; - - while (samplesToRead > 0) { - drwav_uint64 samplesRead = drwav_read(pWav, drwav_min(samplesToRead, sizeof(sampleData)/bytesPerSample), sampleData); - if (samplesRead == 0) { - break; - } - - drwav__ieee_to_s32(pBufferOut, sampleData, (size_t)samplesRead, bytesPerSample); - - pBufferOut += samplesRead; - samplesToRead -= samplesRead; - totalSamplesRead += samplesRead; - } - - return totalSamplesRead; -} - -drwav_uint64 drwav_read_s32__alaw(drwav* pWav, drwav_uint64 samplesToRead, drwav_int32* pBufferOut) -{ - drwav_uint64 totalSamplesRead; - unsigned char sampleData[4096]; - - drwav_uint32 bytesPerSample = drwav_get_bytes_per_sample(pWav); - if (bytesPerSample == 0) { - return 0; - } - - totalSamplesRead = 0; - - while (samplesToRead > 0) { - drwav_uint64 samplesRead = drwav_read(pWav, drwav_min(samplesToRead, sizeof(sampleData)/bytesPerSample), sampleData); - if (samplesRead == 0) { - break; - } - - drwav_alaw_to_s32(pBufferOut, sampleData, (size_t)samplesRead); - - pBufferOut += samplesRead; - samplesToRead -= samplesRead; - totalSamplesRead += samplesRead; - } - - return totalSamplesRead; -} - -drwav_uint64 drwav_read_s32__mulaw(drwav* pWav, drwav_uint64 samplesToRead, drwav_int32* pBufferOut) -{ - drwav_uint64 totalSamplesRead; - unsigned char sampleData[4096]; - - drwav_uint32 bytesPerSample = drwav_get_bytes_per_sample(pWav); - if (bytesPerSample == 0) { - return 0; - } - - totalSamplesRead = 0; - - while (samplesToRead > 0) { - drwav_uint64 samplesRead = drwav_read(pWav, drwav_min(samplesToRead, sizeof(sampleData)/bytesPerSample), sampleData); - if (samplesRead == 0) { - break; - } - - drwav_mulaw_to_s32(pBufferOut, sampleData, (size_t)samplesRead); - - pBufferOut += samplesRead; - samplesToRead -= samplesRead; - totalSamplesRead += samplesRead; - } - - return totalSamplesRead; -} - -drwav_uint64 drwav_read_s32(drwav* pWav, drwav_uint64 samplesToRead, drwav_int32* pBufferOut) -{ - if (pWav == NULL || samplesToRead == 0 || pBufferOut == NULL) { - return 0; - } - - /* Don't try to read more samples than can potentially fit in the output buffer. */ - if (samplesToRead * sizeof(drwav_int32) > DRWAV_SIZE_MAX) { - samplesToRead = DRWAV_SIZE_MAX / sizeof(drwav_int32); - } - - - if (pWav->translatedFormatTag == DR_WAVE_FORMAT_PCM) { - return drwav_read_s32__pcm(pWav, samplesToRead, pBufferOut); - } - - if (pWav->translatedFormatTag == DR_WAVE_FORMAT_ADPCM) { - return drwav_read_s32__msadpcm(pWav, samplesToRead, pBufferOut); - } - - if (pWav->translatedFormatTag == DR_WAVE_FORMAT_IEEE_FLOAT) { - return drwav_read_s32__ieee(pWav, samplesToRead, pBufferOut); - } - - if (pWav->translatedFormatTag == DR_WAVE_FORMAT_ALAW) { - return drwav_read_s32__alaw(pWav, samplesToRead, pBufferOut); - } - - if (pWav->translatedFormatTag == DR_WAVE_FORMAT_MULAW) { - return drwav_read_s32__mulaw(pWav, samplesToRead, pBufferOut); - } - - if (pWav->translatedFormatTag == DR_WAVE_FORMAT_DVI_ADPCM) { - return drwav_read_s32__ima(pWav, samplesToRead, pBufferOut); - } - - return 0; -} - -drwav_uint64 drwav_read_pcm_frames_s32(drwav* pWav, drwav_uint64 framesToRead, drwav_int32* pBufferOut) -{ - return drwav_read_s32(pWav, framesToRead * pWav->channels, pBufferOut) / pWav->channels; -} - -void drwav_u8_to_s32(drwav_int32* pOut, const drwav_uint8* pIn, size_t sampleCount) -{ - size_t i; - - if (pOut == NULL || pIn == NULL) { - return; - } - - for (i = 0; i < sampleCount; ++i) { - *pOut++ = ((int)pIn[i] - 128) << 24; - } -} - -void drwav_s16_to_s32(drwav_int32* pOut, const drwav_int16* pIn, size_t sampleCount) -{ - size_t i; - - if (pOut == NULL || pIn == NULL) { - return; - } - - for (i = 0; i < sampleCount; ++i) { - *pOut++ = pIn[i] << 16; - } -} - -void drwav_s24_to_s32(drwav_int32* pOut, const drwav_uint8* pIn, size_t sampleCount) -{ - size_t i; - - if (pOut == NULL || pIn == NULL) { - return; - } - - for (i = 0; i < sampleCount; ++i) { - unsigned int s0 = pIn[i*3 + 0]; - unsigned int s1 = pIn[i*3 + 1]; - unsigned int s2 = pIn[i*3 + 2]; - - drwav_int32 sample32 = (drwav_int32)((s0 << 8) | (s1 << 16) | (s2 << 24)); - *pOut++ = sample32; - } -} - -void drwav_f32_to_s32(drwav_int32* pOut, const float* pIn, size_t sampleCount) -{ - size_t i; - - if (pOut == NULL || pIn == NULL) { - return; - } - - for (i = 0; i < sampleCount; ++i) { - *pOut++ = (drwav_int32)(2147483648.0 * pIn[i]); - } -} - -void drwav_f64_to_s32(drwav_int32* pOut, const double* pIn, size_t sampleCount) -{ - size_t i; - - if (pOut == NULL || pIn == NULL) { - return; - } - - for (i = 0; i < sampleCount; ++i) { - *pOut++ = (drwav_int32)(2147483648.0 * pIn[i]); - } -} - -void drwav_alaw_to_s32(drwav_int32* pOut, const drwav_uint8* pIn, size_t sampleCount) -{ - size_t i; - - if (pOut == NULL || pIn == NULL) { - return; - } - - for (i = 0; i < sampleCount; ++i) { - *pOut++ = ((drwav_int32)drwav__alaw_to_s16(pIn[i])) << 16; - } -} - -void drwav_mulaw_to_s32(drwav_int32* pOut, const drwav_uint8* pIn, size_t sampleCount) -{ - size_t i; - - if (pOut == NULL || pIn == NULL) { - return; - } - - for (i= 0; i < sampleCount; ++i) { - *pOut++ = ((drwav_int32)drwav__mulaw_to_s16(pIn[i])) << 16; - } -} - - - -drwav_int16* drwav__read_and_close_s16(drwav* pWav, unsigned int* channels, unsigned int* sampleRate, drwav_uint64* totalSampleCount) -{ - drwav_uint64 sampleDataSize; - drwav_int16* pSampleData; - drwav_uint64 samplesRead; - - drwav_assert(pWav != NULL); - - sampleDataSize = pWav->totalSampleCount * sizeof(drwav_int16); - if (sampleDataSize > DRWAV_SIZE_MAX) { - drwav_uninit(pWav); - return NULL; /* File's too big. */ - } - - pSampleData = (drwav_int16*)DRWAV_MALLOC((size_t)sampleDataSize); /* <-- Safe cast due to the check above. */ - if (pSampleData == NULL) { - drwav_uninit(pWav); - return NULL; /* Failed to allocate memory. */ - } - - samplesRead = drwav_read_s16(pWav, (size_t)pWav->totalSampleCount, pSampleData); - if (samplesRead != pWav->totalSampleCount) { - DRWAV_FREE(pSampleData); - drwav_uninit(pWav); - return NULL; /* There was an error reading the samples. */ - } - - drwav_uninit(pWav); - - if (sampleRate) { - *sampleRate = pWav->sampleRate; - } - if (channels) { - *channels = pWav->channels; - } - if (totalSampleCount) { - *totalSampleCount = pWav->totalSampleCount; - } - - return pSampleData; -} - -float* drwav__read_and_close_f32(drwav* pWav, unsigned int* channels, unsigned int* sampleRate, drwav_uint64* totalSampleCount) -{ - drwav_uint64 sampleDataSize; - float* pSampleData; - drwav_uint64 samplesRead; - - drwav_assert(pWav != NULL); - - sampleDataSize = pWav->totalSampleCount * sizeof(float); - if (sampleDataSize > DRWAV_SIZE_MAX) { - drwav_uninit(pWav); - return NULL; /* File's too big. */ - } - - pSampleData = (float*)DRWAV_MALLOC((size_t)sampleDataSize); /* <-- Safe cast due to the check above. */ - if (pSampleData == NULL) { - drwav_uninit(pWav); - return NULL; /* Failed to allocate memory. */ - } - - samplesRead = drwav_read_f32(pWav, (size_t)pWav->totalSampleCount, pSampleData); - if (samplesRead != pWav->totalSampleCount) { - DRWAV_FREE(pSampleData); - drwav_uninit(pWav); - return NULL; /* There was an error reading the samples. */ - } - - drwav_uninit(pWav); - - if (sampleRate) { - *sampleRate = pWav->sampleRate; - } - if (channels) { - *channels = pWav->channels; - } - if (totalSampleCount) { - *totalSampleCount = pWav->totalSampleCount; - } - - return pSampleData; -} - -drwav_int32* drwav__read_and_close_s32(drwav* pWav, unsigned int* channels, unsigned int* sampleRate, drwav_uint64* totalSampleCount) -{ - drwav_uint64 sampleDataSize; - drwav_int32* pSampleData; - drwav_uint64 samplesRead; - - drwav_assert(pWav != NULL); - - sampleDataSize = pWav->totalSampleCount * sizeof(drwav_int32); - if (sampleDataSize > DRWAV_SIZE_MAX) { - drwav_uninit(pWav); - return NULL; /* File's too big. */ - } - - pSampleData = (drwav_int32*)DRWAV_MALLOC((size_t)sampleDataSize); /* <-- Safe cast due to the check above. */ - if (pSampleData == NULL) { - drwav_uninit(pWav); - return NULL; /* Failed to allocate memory. */ - } - - samplesRead = drwav_read_s32(pWav, (size_t)pWav->totalSampleCount, pSampleData); - if (samplesRead != pWav->totalSampleCount) { - DRWAV_FREE(pSampleData); - drwav_uninit(pWav); - return NULL; /* There was an error reading the samples. */ - } - - drwav_uninit(pWav); - - if (sampleRate) { - *sampleRate = pWav->sampleRate; - } - if (channels) { - *channels = pWav->channels; - } - if (totalSampleCount) { - *totalSampleCount = pWav->totalSampleCount; - } - - return pSampleData; -} - - -drwav_int16* drwav_open_and_read_s16(drwav_read_proc onRead, drwav_seek_proc onSeek, void* pUserData, unsigned int* channels, unsigned int* sampleRate, drwav_uint64* totalSampleCount) -{ - drwav wav; - - if (channels) { - *channels = 0; - } - if (sampleRate) { - *sampleRate = 0; - } - if (totalSampleCount) { - *totalSampleCount = 0; - } - - if (!drwav_init(&wav, onRead, onSeek, pUserData)) { - return NULL; - } - - return drwav__read_and_close_s16(&wav, channels, sampleRate, totalSampleCount); -} - -drwav_int16* drwav_open_and_read_pcm_frames_s16(drwav_read_proc onRead, drwav_seek_proc onSeek, void* pUserData, unsigned int* channelsOut, unsigned int* sampleRateOut, drwav_uint64* totalFrameCountOut) -{ - unsigned int channels; - unsigned int sampleRate; - drwav_uint64 totalSampleCount; - drwav_int16* result; - - if (channelsOut) { - *channelsOut = 0; - } - if (sampleRateOut) { - *sampleRateOut = 0; - } - if (totalFrameCountOut) { - *totalFrameCountOut = 0; - } - - result = drwav_open_and_read_s16(onRead, onSeek, pUserData, &channels, &sampleRate, &totalSampleCount); - if (result == NULL) { - return NULL; - } - - if (channelsOut) { - *channelsOut = channels; - } - if (sampleRateOut) { - *sampleRateOut = sampleRate; - } - if (totalFrameCountOut) { - *totalFrameCountOut = totalSampleCount / channels; - } - - return result; -} - -float* drwav_open_and_read_f32(drwav_read_proc onRead, drwav_seek_proc onSeek, void* pUserData, unsigned int* channels, unsigned int* sampleRate, drwav_uint64* totalSampleCount) -{ - drwav wav; - - if (sampleRate) { - *sampleRate = 0; - } - if (channels) { - *channels = 0; - } - if (totalSampleCount) { - *totalSampleCount = 0; - } - - if (!drwav_init(&wav, onRead, onSeek, pUserData)) { - return NULL; - } - - return drwav__read_and_close_f32(&wav, channels, sampleRate, totalSampleCount); -} - -float* drwav_open_and_read_pcm_frames_f32(drwav_read_proc onRead, drwav_seek_proc onSeek, void* pUserData, unsigned int* channelsOut, unsigned int* sampleRateOut, drwav_uint64* totalFrameCountOut) -{ - unsigned int channels; - unsigned int sampleRate; - drwav_uint64 totalSampleCount; - float* result; - - if (channelsOut) { - *channelsOut = 0; - } - if (sampleRateOut) { - *sampleRateOut = 0; - } - if (totalFrameCountOut) { - *totalFrameCountOut = 0; - } - - result = drwav_open_and_read_f32(onRead, onSeek, pUserData, &channels, &sampleRate, &totalSampleCount); - if (result == NULL) { - return NULL; - } - - if (channelsOut) { - *channelsOut = channels; - } - if (sampleRateOut) { - *sampleRateOut = sampleRate; - } - if (totalFrameCountOut) { - *totalFrameCountOut = totalSampleCount / channels; - } - - return result; -} - -drwav_int32* drwav_open_and_read_s32(drwav_read_proc onRead, drwav_seek_proc onSeek, void* pUserData, unsigned int* channels, unsigned int* sampleRate, drwav_uint64* totalSampleCount) -{ - drwav wav; - - if (sampleRate) { - *sampleRate = 0; - } - if (channels) { - *channels = 0; - } - if (totalSampleCount) { - *totalSampleCount = 0; - } - - if (!drwav_init(&wav, onRead, onSeek, pUserData)) { - return NULL; - } - - return drwav__read_and_close_s32(&wav, channels, sampleRate, totalSampleCount); -} - -drwav_int32* drwav_open_and_read_pcm_frames_s32(drwav_read_proc onRead, drwav_seek_proc onSeek, void* pUserData, unsigned int* channelsOut, unsigned int* sampleRateOut, drwav_uint64* totalFrameCountOut) -{ - unsigned int channels; - unsigned int sampleRate; - drwav_uint64 totalSampleCount; - drwav_int32* result; - - if (channelsOut) { - *channelsOut = 0; - } - if (sampleRateOut) { - *sampleRateOut = 0; - } - if (totalFrameCountOut) { - *totalFrameCountOut = 0; - } - - result = drwav_open_and_read_s32(onRead, onSeek, pUserData, &channels, &sampleRate, &totalSampleCount); - if (result == NULL) { - return NULL; - } - - if (channelsOut) { - *channelsOut = channels; - } - if (sampleRateOut) { - *sampleRateOut = sampleRate; - } - if (totalFrameCountOut) { - *totalFrameCountOut = totalSampleCount / channels; - } - - return result; -} - -#ifndef DR_WAV_NO_STDIO -drwav_int16* drwav_open_file_and_read_s16(const char* filename, unsigned int* channels, unsigned int* sampleRate, drwav_uint64* totalSampleCount) -{ - drwav wav; - - if (sampleRate) { - *sampleRate = 0; - } - if (channels) { - *channels = 0; - } - if (totalSampleCount) { - *totalSampleCount = 0; - } - - if (!drwav_init_file(&wav, filename)) { - return NULL; - } - - return drwav__read_and_close_s16(&wav, channels, sampleRate, totalSampleCount); -} - -drwav_int16* drwav_open_file_and_read_pcm_frames_s16(const char* filename, unsigned int* channelsOut, unsigned int* sampleRateOut, drwav_uint64* totalFrameCountOut) -{ - unsigned int channels; - unsigned int sampleRate; - drwav_uint64 totalSampleCount; - drwav_int16* result; - - if (channelsOut) { - *channelsOut = 0; - } - if (sampleRateOut) { - *sampleRateOut = 0; - } - if (totalFrameCountOut) { - *totalFrameCountOut = 0; - } - - result = drwav_open_file_and_read_s16(filename, &channels, &sampleRate, &totalSampleCount); - if (result == NULL) { - return NULL; - } - - if (channelsOut) { - *channelsOut = channels; - } - if (sampleRateOut) { - *sampleRateOut = sampleRate; - } - if (totalFrameCountOut) { - *totalFrameCountOut = totalSampleCount / channels; - } - - return result; -} - -float* drwav_open_file_and_read_f32(const char* filename, unsigned int* channels, unsigned int* sampleRate, drwav_uint64* totalSampleCount) -{ - drwav wav; - - if (sampleRate) { - *sampleRate = 0; - } - if (channels) { - *channels = 0; - } - if (totalSampleCount) { - *totalSampleCount = 0; - } - - if (!drwav_init_file(&wav, filename)) { - return NULL; - } - - return drwav__read_and_close_f32(&wav, channels, sampleRate, totalSampleCount); -} - -float* drwav_open_file_and_read_pcm_frames_f32(const char* filename, unsigned int* channelsOut, unsigned int* sampleRateOut, drwav_uint64* totalFrameCountOut) -{ - unsigned int channels; - unsigned int sampleRate; - drwav_uint64 totalSampleCount; - float* result; - - if (channelsOut) { - *channelsOut = 0; - } - if (sampleRateOut) { - *sampleRateOut = 0; - } - if (totalFrameCountOut) { - *totalFrameCountOut = 0; - } - - result = drwav_open_file_and_read_f32(filename, &channels, &sampleRate, &totalSampleCount); - if (result == NULL) { - return NULL; - } - - if (channelsOut) { - *channelsOut = channels; - } - if (sampleRateOut) { - *sampleRateOut = sampleRate; - } - if (totalFrameCountOut) { - *totalFrameCountOut = totalSampleCount / channels; - } - - return result; -} - -drwav_int32* drwav_open_file_and_read_s32(const char* filename, unsigned int* channels, unsigned int* sampleRate, drwav_uint64* totalSampleCount) -{ - drwav wav; - - if (sampleRate) { - *sampleRate = 0; - } - if (channels) { - *channels = 0; - } - if (totalSampleCount) { - *totalSampleCount = 0; - } - - if (!drwav_init_file(&wav, filename)) { - return NULL; - } - - return drwav__read_and_close_s32(&wav, channels, sampleRate, totalSampleCount); -} - -drwav_int32* drwav_open_file_and_read_pcm_frames_s32(const char* filename, unsigned int* channelsOut, unsigned int* sampleRateOut, drwav_uint64* totalFrameCountOut) -{ - unsigned int channels; - unsigned int sampleRate; - drwav_uint64 totalSampleCount; - drwav_int32* result; - - if (channelsOut) { - *channelsOut = 0; - } - if (sampleRateOut) { - *sampleRateOut = 0; - } - if (totalFrameCountOut) { - *totalFrameCountOut = 0; - } - - result = drwav_open_file_and_read_s32(filename, &channels, &sampleRate, &totalSampleCount); - if (result == NULL) { - return NULL; - } - - if (channelsOut) { - *channelsOut = channels; - } - if (sampleRateOut) { - *sampleRateOut = sampleRate; - } - if (totalFrameCountOut) { - *totalFrameCountOut = totalSampleCount / channels; - } - - return result; -} -#endif - -drwav_int16* drwav_open_memory_and_read_s16(const void* data, size_t dataSize, unsigned int* channels, unsigned int* sampleRate, drwav_uint64* totalSampleCount) -{ - drwav wav; - - if (sampleRate) { - *sampleRate = 0; - } - if (channels) { - *channels = 0; - } - if (totalSampleCount) { - *totalSampleCount = 0; - } - - if (!drwav_init_memory(&wav, data, dataSize)) { - return NULL; - } - - return drwav__read_and_close_s16(&wav, channels, sampleRate, totalSampleCount); -} - -drwav_int16* drwav_open_memory_and_read_pcm_frames_s16(const void* data, size_t dataSize, unsigned int* channelsOut, unsigned int* sampleRateOut, drwav_uint64* totalFrameCountOut) -{ - unsigned int channels; - unsigned int sampleRate; - drwav_uint64 totalSampleCount; - drwav_int16* result; - - if (channelsOut) { - *channelsOut = 0; - } - if (sampleRateOut) { - *sampleRateOut = 0; - } - if (totalFrameCountOut) { - *totalFrameCountOut = 0; - } - - result = drwav_open_memory_and_read_s16(data, dataSize, &channels, &sampleRate, &totalSampleCount); - if (result == NULL) { - return NULL; - } - - if (channelsOut) { - *channelsOut = channels; - } - if (sampleRateOut) { - *sampleRateOut = sampleRate; - } - if (totalFrameCountOut) { - *totalFrameCountOut = totalSampleCount / channels; - } - - return result; -} - -float* drwav_open_memory_and_read_f32(const void* data, size_t dataSize, unsigned int* channels, unsigned int* sampleRate, drwav_uint64* totalSampleCount) -{ - drwav wav; - - if (sampleRate) { - *sampleRate = 0; - } - if (channels) { - *channels = 0; - } - if (totalSampleCount) { - *totalSampleCount = 0; - } - - if (!drwav_init_memory(&wav, data, dataSize)) { - return NULL; - } - - return drwav__read_and_close_f32(&wav, channels, sampleRate, totalSampleCount); -} - -float* drwav_open_memory_and_read_pcm_frames_f32(const void* data, size_t dataSize, unsigned int* channelsOut, unsigned int* sampleRateOut, drwav_uint64* totalFrameCountOut) -{ - unsigned int channels; - unsigned int sampleRate; - drwav_uint64 totalSampleCount; - float* result; - - if (channelsOut) { - *channelsOut = 0; - } - if (sampleRateOut) { - *sampleRateOut = 0; - } - if (totalFrameCountOut) { - *totalFrameCountOut = 0; - } - - result = drwav_open_memory_and_read_f32(data, dataSize, &channels, &sampleRate, &totalSampleCount); - if (result == NULL) { - return NULL; - } - - if (channelsOut) { - *channelsOut = channels; - } - if (sampleRateOut) { - *sampleRateOut = sampleRate; - } - if (totalFrameCountOut) { - *totalFrameCountOut = totalSampleCount / channels; - } - - return result; -} - -drwav_int32* drwav_open_memory_and_read_s32(const void* data, size_t dataSize, unsigned int* channels, unsigned int* sampleRate, drwav_uint64* totalSampleCount) -{ - drwav wav; - - if (sampleRate) { - *sampleRate = 0; - } - if (channels) { - *channels = 0; - } - if (totalSampleCount) { - *totalSampleCount = 0; - } - - if (!drwav_init_memory(&wav, data, dataSize)) { - return NULL; - } - - return drwav__read_and_close_s32(&wav, channels, sampleRate, totalSampleCount); -} - -drwav_int32* drwav_open_memory_and_read_pcm_frames_s32(const void* data, size_t dataSize, unsigned int* channelsOut, unsigned int* sampleRateOut, drwav_uint64* totalFrameCountOut) -{ - unsigned int channels; - unsigned int sampleRate; - drwav_uint64 totalSampleCount; - drwav_int32* result; - - if (channelsOut) { - *channelsOut = 0; - } - if (sampleRateOut) { - *sampleRateOut = 0; - } - if (totalFrameCountOut) { - *totalFrameCountOut = 0; - } - - result = drwav_open_memory_and_read_s32(data, dataSize, &channels, &sampleRate, &totalSampleCount); - if (result == NULL) { - return NULL; - } - - if (channelsOut) { - *channelsOut = channels; - } - if (sampleRateOut) { - *sampleRateOut = sampleRate; - } - if (totalFrameCountOut) { - *totalFrameCountOut = totalSampleCount / channels; - } - - return result; -} -#endif /* DR_WAV_NO_CONVERSION_API */ - - -void drwav_free(void* pDataReturnedByOpenAndRead) -{ - DRWAV_FREE(pDataReturnedByOpenAndRead); -} - -#endif /* DR_WAV_IMPLEMENTATION */ - - -/* -REVISION HISTORY -================ -v0.9.2 - 2019-05-21 - - Fix warnings. - -v0.9.1 - 2019-05-05 - - Add support for C89. - - Change license to choice of public domain or MIT-0. - -v0.9.0 - 2018-12-16 - - API CHANGE: Add new reading APIs for reading by PCM frames instead of samples. Old APIs have been deprecated and - will be removed in v0.10.0. Deprecated APIs and their replacements: - drwav_read() -> drwav_read_pcm_frames() - drwav_read_s16() -> drwav_read_pcm_frames_s16() - drwav_read_f32() -> drwav_read_pcm_frames_f32() - drwav_read_s32() -> drwav_read_pcm_frames_s32() - drwav_seek_to_sample() -> drwav_seek_to_pcm_frame() - drwav_write() -> drwav_write_pcm_frames() - drwav_open_and_read_s16() -> drwav_open_and_read_pcm_frames_s16() - drwav_open_and_read_f32() -> drwav_open_and_read_pcm_frames_f32() - drwav_open_and_read_s32() -> drwav_open_and_read_pcm_frames_s32() - drwav_open_file_and_read_s16() -> drwav_open_file_and_read_pcm_frames_s16() - drwav_open_file_and_read_f32() -> drwav_open_file_and_read_pcm_frames_f32() - drwav_open_file_and_read_s32() -> drwav_open_file_and_read_pcm_frames_s32() - drwav_open_memory_and_read_s16() -> drwav_open_memory_and_read_pcm_frames_s16() - drwav_open_memory_and_read_f32() -> drwav_open_memory_and_read_pcm_frames_f32() - drwav_open_memory_and_read_s32() -> drwav_open_memory_and_read_pcm_frames_s32() - drwav::totalSampleCount -> drwav::totalPCMFrameCount - - API CHANGE: Rename drwav_open_and_read_file_*() to drwav_open_file_and_read_*(). - - API CHANGE: Rename drwav_open_and_read_memory_*() to drwav_open_memory_and_read_*(). - - Add built-in support for smpl chunks. - - Add support for firing a callback for each chunk in the file at initialization time. - - This is enabled through the drwav_init_ex(), etc. family of APIs. - - Handle invalid FMT chunks more robustly. - -v0.8.5 - 2018-09-11 - - Const correctness. - - Fix a potential stack overflow. - -v0.8.4 - 2018-08-07 - - Improve 64-bit detection. - -v0.8.3 - 2018-08-05 - - Fix C++ build on older versions of GCC. - -v0.8.2 - 2018-08-02 - - Fix some big-endian bugs. - -v0.8.1 - 2018-06-29 - - Add support for sequential writing APIs. - - Disable seeking in write mode. - - Fix bugs with Wave64. - - Fix typos. - -v0.8 - 2018-04-27 - - Bug fix. - - Start using major.minor.revision versioning. - -v0.7f - 2018-02-05 - - Restrict ADPCM formats to a maximum of 2 channels. - -v0.7e - 2018-02-02 - - Fix a crash. - -v0.7d - 2018-02-01 - - Fix a crash. - -v0.7c - 2018-02-01 - - Set drwav.bytesPerSample to 0 for all compressed formats. - - Fix a crash when reading 16-bit floating point WAV files. In this case dr_wav will output silence for - all format conversion reading APIs (*_s16, *_s32, *_f32 APIs). - - Fix some divide-by-zero errors. - -v0.7b - 2018-01-22 - - Fix errors with seeking of compressed formats. - - Fix compilation error when DR_WAV_NO_CONVERSION_API - -v0.7a - 2017-11-17 - - Fix some GCC warnings. - -v0.7 - 2017-11-04 - - Add writing APIs. - -v0.6 - 2017-08-16 - - API CHANGE: Rename dr_* types to drwav_*. - - Add support for custom implementations of malloc(), realloc(), etc. - - Add support for Microsoft ADPCM. - - Add support for IMA ADPCM (DVI, format code 0x11). - - Optimizations to drwav_read_s16(). - - Bug fixes. - -v0.5g - 2017-07-16 - - Change underlying type for booleans to unsigned. - -v0.5f - 2017-04-04 - - Fix a minor bug with drwav_open_and_read_s16() and family. - -v0.5e - 2016-12-29 - - Added support for reading samples as signed 16-bit integers. Use the _s16() family of APIs for this. - - Minor fixes to documentation. - -v0.5d - 2016-12-28 - - Use drwav_int* and drwav_uint* sized types to improve compiler support. - -v0.5c - 2016-11-11 - - Properly handle JUNK chunks that come before the FMT chunk. - -v0.5b - 2016-10-23 - - A minor change to drwav_bool8 and drwav_bool32 types. - -v0.5a - 2016-10-11 - - Fixed a bug with drwav_open_and_read() and family due to incorrect argument ordering. - - Improve A-law and mu-law efficiency. - -v0.5 - 2016-09-29 - - API CHANGE. Swap the order of "channels" and "sampleRate" parameters in drwav_open_and_read*(). Rationale for this is to - keep it consistent with dr_audio and dr_flac. - -v0.4b - 2016-09-18 - - Fixed a typo in documentation. - -v0.4a - 2016-09-18 - - Fixed a typo. - - Change date format to ISO 8601 (YYYY-MM-DD) - -v0.4 - 2016-07-13 - - API CHANGE. Make onSeek consistent with dr_flac. - - API CHANGE. Rename drwav_seek() to drwav_seek_to_sample() for clarity and consistency with dr_flac. - - Added support for Sony Wave64. - -v0.3a - 2016-05-28 - - API CHANGE. Return drwav_bool32 instead of int in onSeek callback. - - Fixed a memory leak. - -v0.3 - 2016-05-22 - - Lots of API changes for consistency. - -v0.2a - 2016-05-16 - - Fixed Linux/GCC build. - -v0.2 - 2016-05-11 - - Added support for reading data as signed 32-bit PCM for consistency with dr_flac. - -v0.1a - 2016-05-07 - - Fixed a bug in drwav_open_file() where the file handle would not be closed if the loader failed to initialize. - -v0.1 - 2016-05-04 - - Initial versioned release. -*/ - -/* -This software is available as a choice of the following licenses. Choose -whichever you prefer. - -=============================================================================== -ALTERNATIVE 1 - Public Domain (www.unlicense.org) -=============================================================================== -This is free and unencumbered software released into the public domain. - -Anyone is free to copy, modify, publish, use, compile, sell, or distribute this -software, either in source code form or as a compiled binary, for any purpose, -commercial or non-commercial, and by any means. - -In jurisdictions that recognize copyright laws, the author or authors of this -software dedicate any and all copyright interest in the software to the public -domain. We make this dedication for the benefit of the public at large and to -the detriment of our heirs and successors. We intend this dedication to be an -overt act of relinquishment in perpetuity of all present and future rights to -this software under copyright law. - -THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN -ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION -WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. - -For more information, please refer to <http://unlicense.org/> - -=============================================================================== -ALTERNATIVE 2 - MIT No Attribution -=============================================================================== -Copyright 2018 David Reid - -Permission is hereby granted, free of charge, to any person obtaining a copy of -this software and associated documentation files (the "Software"), to deal in -the Software without restriction, including without limitation the rights to -use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies -of the Software, and to permit persons to whom the Software is furnished to do -so. - -THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE -SOFTWARE. -*/ |