diff options
Diffstat (limited to 'src/audio/oal/stream.cpp')
| -rw-r--r-- | src/audio/oal/stream.cpp | 357 |
1 files changed, 329 insertions, 28 deletions
diff --git a/src/audio/oal/stream.cpp b/src/audio/oal/stream.cpp index 9beb27a0..0a5be049 100644 --- a/src/audio/oal/stream.cpp +++ b/src/audio/oal/stream.cpp @@ -8,10 +8,14 @@ #include <opusfile.h> #else #ifdef _WIN32 +#ifdef AUDIO_OAL_USE_SNDFILE #pragma comment( lib, "libsndfile-1.lib" ) +#endif #pragma comment( lib, "libmpg123-0.lib" ) #endif +#ifdef AUDIO_OAL_USE_SNDFILE #include <sndfile.h> +#endif #include <mpg123.h> #endif @@ -78,6 +82,290 @@ public: CSortStereoBuffer SortStereoBuffer; #ifndef AUDIO_OPUS +class CImaADPCMDecoder +{ + const uint16 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 + }; + + int16 Sample, StepIndex; + +public: + CImaADPCMDecoder() + { + Init(0, 0); + } + + void Init(int16 _Sample, int16 _StepIndex) + { + Sample = _Sample; + StepIndex = _StepIndex; + } + + void Decode(uint8 *inbuf, int16 *_outbuf, size_t size) + { + int16* outbuf = _outbuf; + for (size_t i = 0; i < size; i++) + { + *(outbuf++) = DecodeSample(inbuf[i] & 0xF); + *(outbuf++) = DecodeSample(inbuf[i] >> 4); + } + } + + int16 DecodeSample(uint8 adpcm) + { + uint16 step = StepTable[StepIndex]; + + if (adpcm & 4) + StepIndex += ((adpcm & 3) + 1) * 2; + else + StepIndex--; + + StepIndex = clamp(StepIndex, 0, 88); + + int delta = step >> 3; + if (adpcm & 1) delta += step >> 2; + if (adpcm & 2) delta += step >> 1; + if (adpcm & 4) delta += step; + if (adpcm & 8) delta = -delta; + + int newSample = Sample + delta; + Sample = clamp(newSample, -32768, 32767); + return Sample; + } +}; + +class CWavFile : public IDecoder +{ + enum + { + WAVEFMT_PCM = 1, + WAVEFMT_IMA_ADPCM = 0x11, + WAVEFMT_XBOX_ADPCM = 0x69, + }; + + struct tDataHeader + { + uint32 ID; + uint32 Size; + }; + + struct tFormatHeader + { + uint16 AudioFormat; + uint16 NumChannels; + uint32 SampleRate; + uint32 ByteRate; + uint16 BlockAlign; + uint16 BitsPerSample; + uint16 extra[2]; // adpcm only + + tFormatHeader() { memset(this, 0, sizeof(*this)); } + }; + + FILE* pFile; + bool bIsOpen; + tFormatHeader FormatHeader; + + uint32 DataStartOffset; + uint32 SampleCount; + uint32 SamplesPerBlock; + + // ADPCM things + uint8 *AdpcmBlock; + int16 **buffers; + CImaADPCMDecoder* decoders; + + void Close() + { + if (pFile) { + fclose(pFile); + pFile = nil; + } + if (AdpcmBlock) delete AdpcmBlock; + if (buffers) delete buffers; + if (decoders) delete decoders; + } + +public: + CWavFile(const char* path) : bIsOpen(false), DataStartOffset(0), SampleCount(0), SamplesPerBlock(0), AdpcmBlock(nil), buffers(nil), decoders(nil) + { + pFile = fopen(path, "rb"); + if (!pFile) return; + +#define CLOSE_ON_ERROR(op)\ + if (op) { \ + Close(); \ + return; \ + } + + tDataHeader DataHeader; + + CLOSE_ON_ERROR(fread(&DataHeader, sizeof(DataHeader), 1, pFile) == 0); + CLOSE_ON_ERROR(DataHeader.ID != 'FFIR'); + + int WAVE; + CLOSE_ON_ERROR(fread(&WAVE, 4, 1, pFile) == 0); + CLOSE_ON_ERROR(WAVE != 'EVAW') + CLOSE_ON_ERROR(fread(&DataHeader, sizeof(DataHeader), 1, pFile) == 0); + CLOSE_ON_ERROR(DataHeader.ID != ' tmf'); + + CLOSE_ON_ERROR(fread(&FormatHeader, Min(DataHeader.Size, sizeof(tFormatHeader)), 1, pFile) == 0); + CLOSE_ON_ERROR(DataHeader.Size > sizeof(tFormatHeader)); + + switch (FormatHeader.AudioFormat) + { + case WAVEFMT_XBOX_ADPCM: + FormatHeader.AudioFormat = WAVEFMT_IMA_ADPCM; + case WAVEFMT_IMA_ADPCM: + SamplesPerBlock = (FormatHeader.BlockAlign / FormatHeader.NumChannels - 4) * 2 + 1; + AdpcmBlock = new uint8[FormatHeader.BlockAlign]; + buffers = new int16*[FormatHeader.NumChannels]; + decoders = new CImaADPCMDecoder[FormatHeader.NumChannels]; + break; + case WAVEFMT_PCM: + SamplesPerBlock = 1; + if (FormatHeader.BitsPerSample != 16) + { + debug("Unsupported PCM (%d bits), only signed 16-bit is supported (%s)\n", FormatHeader.BitsPerSample, path); + return; + } + break; + default: + debug("Unsupported wav format 0x%x (%s)\n", FormatHeader.AudioFormat, path); + return; + } + + while (true) { + CLOSE_ON_ERROR(fread(&DataHeader, sizeof(DataHeader), 1, pFile) == 0); + if (DataHeader.ID == 'atad') + break; + fseek(pFile, DataHeader.Size, SEEK_CUR); + } + + DataStartOffset = ftell(pFile); + SampleCount = DataHeader.Size / FormatHeader.BlockAlign * SamplesPerBlock; + + bIsOpen = true; +#undef CLOSE_ON_ERROR + } + + ~CWavFile() + { + Close(); + } + + bool IsOpened() + { + return bIsOpen; + } + + uint32 GetSampleSize() + { + return sizeof(uint16); + } + + uint32 GetSampleCount() + { + return SampleCount; + } + + uint32 GetSampleRate() + { + return FormatHeader.SampleRate; + } + + uint32 GetChannels() + { + return FormatHeader.NumChannels; + } + + void Seek(uint32 milliseconds) + { + if (!IsOpened()) return; + fseek(pFile, DataStartOffset + ms2samples(milliseconds) / SamplesPerBlock * FormatHeader.BlockAlign, SEEK_SET); + } + + uint32 Tell() + { + if (!IsOpened()) return 0; + return samples2ms((ftell(pFile) - DataStartOffset) / FormatHeader.BlockAlign * SamplesPerBlock); + } + +#define SAMPLES_IN_LINE (8) + + uint32 Decode(void* buffer) + { + if (!IsOpened()) return 0; + + if (FormatHeader.AudioFormat == WAVEFMT_PCM) + { + uint32 size = fread(buffer, 1, GetBufferSize(), pFile); + if (FormatHeader.NumChannels == 2) + SortStereoBuffer.SortStereo(buffer, size); + return size; + } + else if (FormatHeader.AudioFormat == WAVEFMT_IMA_ADPCM) + { + uint32 MaxSamples = GetBufferSamples() / FormatHeader.NumChannels; + uint32 CurSample = (ftell(pFile) - DataStartOffset) / FormatHeader.BlockAlign * SamplesPerBlock; + + MaxSamples = Min(MaxSamples, SampleCount - CurSample); + MaxSamples = MaxSamples / SamplesPerBlock * SamplesPerBlock; + uint32 OutBufSizePerChannel = MaxSamples * GetSampleSize(); + uint32 OutBufSize = OutBufSizePerChannel * FormatHeader.NumChannels; + int16** buffers = new int16*[FormatHeader.NumChannels]; + CImaADPCMDecoder* decoders = new CImaADPCMDecoder[FormatHeader.NumChannels]; + for (uint32 i = 0; i < FormatHeader.NumChannels; i++) + buffers[i] = (int16*)((int8*)buffer + OutBufSizePerChannel * i); + + uint32 samplesRead = 0; + while (samplesRead < MaxSamples) + { + uint8* AdpcmBuf = AdpcmBlock; + if (fread(AdpcmBlock, 1, FormatHeader.BlockAlign, pFile) == 0) + return 0; + + for (uint32 i = 0; i < FormatHeader.NumChannels; i++) + { + int16 Sample = *(int16*)AdpcmBuf; + AdpcmBuf += sizeof(int16); + int16 Step = *(int16*)AdpcmBuf; + AdpcmBuf += sizeof(int16); + decoders[i].Init(Sample, Step); + *(buffers[i]) = Sample; + buffers[i]++; + } + samplesRead++; + for (uint32 s = 1; s < SamplesPerBlock; s += SAMPLES_IN_LINE) + { + for (uint32 i = 0; i < FormatHeader.NumChannels; i++) + { + decoders[i].Decode(AdpcmBuf, buffers[i], SAMPLES_IN_LINE / 2); + AdpcmBuf += SAMPLES_IN_LINE / 2; + buffers[i] += SAMPLES_IN_LINE; + } + samplesRead += SAMPLES_IN_LINE; + } + } + return OutBufSize; + } + return 0; + } +}; + +#ifdef AUDIO_OAL_USE_SNDFILE class CSndFile : public IDecoder { SNDFILE *m_pfSound; @@ -146,6 +434,7 @@ public: return size; } }; +#endif #ifdef _WIN32 // fuzzy seek eliminates stutter when playing ADF but spams errors a lot (nothing breaks though) @@ -280,7 +569,7 @@ public: static short quantize(double sample) { int a = int(sample + 0.5); - return short(clamp(int(sample + 0.5), -32768, 32767)); + return short(clamp(a, -32768, 32767)); } void Decode(void* _inbuf, int16* _outbuf, size_t size) @@ -336,6 +625,7 @@ class CVbFile : public IDecoder size_t m_CurrentBlock; uint8** ppTempBuffers; + int16** buffers; void ReadBlock(int32 block = -1) { @@ -349,22 +639,24 @@ class CVbFile : public IDecoder } public: - CVbFile(const char* path, uint32 nSampleRate = 32000, uint8 nChannels = 2) : m_nSampleRate(nSampleRate), m_nChannels(nChannels) + CVbFile(const char* path, uint32 nSampleRate = 32000, uint8 nChannels = 2) : m_nSampleRate(nSampleRate), m_nChannels(nChannels), decoders(nil), ppTempBuffers(nil), buffers(nil), + m_FileSize(0), m_nNumberOfBlocks(0), m_bBlockRead(false), m_LineInBlock(0), m_CurrentBlock(0) { pFile = fopen(path, "rb"); - if (pFile) { - fseek(pFile, 0, SEEK_END); - m_FileSize = ftell(pFile); - fseek(pFile, 0, SEEK_SET); - m_nNumberOfBlocks = m_FileSize / (nChannels * VB_BLOCK_SIZE); - decoders = new CVagDecoder[nChannels]; - m_CurrentBlock = 0; - m_LineInBlock = 0; - m_bBlockRead = false; - ppTempBuffers = new uint8 * [nChannels]; - for (uint8 i = 0; i < nChannels; i++) - ppTempBuffers[i] = new uint8[VB_BLOCK_SIZE]; - } + if (!pFile) return; + + fseek(pFile, 0, SEEK_END); + m_FileSize = ftell(pFile); + fseek(pFile, 0, SEEK_SET); + m_nNumberOfBlocks = m_FileSize / (nChannels * VB_BLOCK_SIZE); + decoders = new CVagDecoder[nChannels]; + m_CurrentBlock = 0; + m_LineInBlock = 0; + m_bBlockRead = false; + ppTempBuffers = new uint8*[nChannels]; + buffers = new int16*[nChannels]; + for (uint8 i = 0; i < nChannels; i++) + ppTempBuffers[i] = new uint8[VB_BLOCK_SIZE]; } ~CVbFile() @@ -376,6 +668,7 @@ public: for (int i = 0; i < m_nChannels; i++) delete ppTempBuffers[i]; delete ppTempBuffers; + delete buffers; } } @@ -409,14 +702,14 @@ public: { if (!IsOpened()) return; uint32 samples = ms2samples(milliseconds); - int32 block = samples / NUM_VAG_SAMPLES_IN_BLOCK; + uint32 block = samples / NUM_VAG_SAMPLES_IN_BLOCK; if (block > m_nNumberOfBlocks) { samples = 0; block = 0; } if (block != m_CurrentBlock) - ReadBlock(block); + m_bBlockRead = false; uint32 remainingSamples = samples - block * NUM_VAG_SAMPLES_IN_BLOCK; uint32 newLine = remainingSamples / VAG_SAMPLES_IN_LINE / VAG_LINE_SIZE; @@ -425,7 +718,7 @@ public: { m_CurrentBlock = block; m_LineInBlock = newLine; - for (int i = 0; i < GetChannels(); i++) + for (uint32 i = 0; i < GetChannels(); i++) decoders[i].ResetState(); } @@ -448,18 +741,19 @@ public: if (m_CurrentBlock == m_nNumberOfBlocks) return 0; int size = 0; - int numberOfRequiredLines = GetBufferSamples() / GetChannels() / VAG_SAMPLES_IN_LINE; + int numberOfRequiredLines = GetBufferSamples() / m_nChannels / VAG_SAMPLES_IN_LINE; int numberOfRemainingLines = (m_nNumberOfBlocks - m_CurrentBlock) * NUM_VAG_LINES_IN_BLOCK - m_LineInBlock; int bufSizePerChannel = Min(numberOfRequiredLines, numberOfRemainingLines) * VAG_SAMPLES_IN_LINE * GetSampleSize(); if (numberOfRequiredLines > numberOfRemainingLines) numberOfRemainingLines = numberOfRemainingLines; - int16* buffers[2] = { (int16*)buffer, &((int16*)buffer)[bufSizePerChannel / GetSampleSize()] }; + for (uint32 i = 0; i < m_nChannels; i++) + buffers[i] = (int16*)((int8*)buffer + bufSizePerChannel * i); while (size < bufSizePerChannel) { - for (int i = 0; i < GetChannels(); i++) + for (uint32 i = 0; i < m_nChannels; i++) { decoders[i].Decode(ppTempBuffers[i] + m_LineInBlock * VAG_LINE_SIZE, buffers[i], VAG_LINE_SIZE); buffers[i] += VAG_SAMPLES_IN_LINE; @@ -476,7 +770,7 @@ public: } } - return bufSizePerChannel * GetChannels(); + return bufSizePerChannel * m_nChannels; } }; #else @@ -621,7 +915,11 @@ CStream::CStream(char *filename, ALuint *sources, ALuint (&buffers)[NUM_STREAMBU if (!strcasecmp(&m_aFilename[strlen(m_aFilename) - strlen(".mp3")], ".mp3")) m_pSoundFile = new CMP3File(m_aFilename); else if (!strcasecmp(&m_aFilename[strlen(m_aFilename) - strlen(".wav")], ".wav")) +#ifdef AUDIO_OAL_USE_SNDFILE m_pSoundFile = new CSndFile(m_aFilename); +#else + m_pSoundFile = new CWavFile(m_aFilename); +#endif else if (!strcasecmp(&m_aFilename[strlen(m_aFilename) - strlen(".vb")], ".VB")) m_pSoundFile = new CVbFile(m_aFilename, overrideSampleRate); #else @@ -922,12 +1220,15 @@ void CStream::Update() // Relying a lot on left buffer states in here - //alSourcef(m_pAlSources[0], AL_ROLLOFF_FACTOR, 0.0f); - alGetSourcei(m_pAlSources[0], AL_SOURCE_STATE, &sourceState[0]); - alGetSourcei(m_pAlSources[0], AL_BUFFERS_PROCESSED, &buffersProcessed[0]); - //alSourcef(m_pAlSources[1], AL_ROLLOFF_FACTOR, 0.0f); - alGetSourcei(m_pAlSources[1], AL_SOURCE_STATE, &sourceState[1]); - alGetSourcei(m_pAlSources[1], AL_BUFFERS_PROCESSED, &buffersProcessed[1]); + do + { + //alSourcef(m_pAlSources[0], AL_ROLLOFF_FACTOR, 0.0f); + alGetSourcei(m_pAlSources[0], AL_SOURCE_STATE, &sourceState[0]); + alGetSourcei(m_pAlSources[0], AL_BUFFERS_PROCESSED, &buffersProcessed[0]); + //alSourcef(m_pAlSources[1], AL_ROLLOFF_FACTOR, 0.0f); + alGetSourcei(m_pAlSources[1], AL_SOURCE_STATE, &sourceState[1]); + alGetSourcei(m_pAlSources[1], AL_BUFFERS_PROCESSED, &buffersProcessed[1]); + } while (buffersProcessed[0] != buffersProcessed[1]); ALint looping = AL_FALSE; alGetSourcei(m_pAlSources[0], AL_LOOPING, &looping); |