diff options
Diffstat (limited to 'engine/audio/private/snd_wave_source.h')
| -rw-r--r-- | engine/audio/private/snd_wave_source.h | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/engine/audio/private/snd_wave_source.h b/engine/audio/private/snd_wave_source.h new file mode 100644 index 0000000..09fe4c1 --- /dev/null +++ b/engine/audio/private/snd_wave_source.h @@ -0,0 +1,160 @@ +//========= Copyright Valve Corporation, All rights reserved. ============// +// +// Purpose: +// +// $Workfile: $ +// $Date: $ +// +//----------------------------------------------------------------------------- +// $Log: $ +// +// $NoKeywords: $ +//=============================================================================// + +#ifndef SND_WAVE_SOURCE_H +#define SND_WAVE_SOURCE_H +#pragma once + +#include "snd_audio_source.h" +class IterateRIFF; +#include "sentence.h" +#include "snd_sfx.h" + +//============================================================================= +// Functions to create audio sources from wave files or from wave data. +//============================================================================= +extern CAudioSource* Audio_CreateMemoryWave( CSfxTable *pSfx ); +extern CAudioSource* Audio_CreateStreamedWave( CSfxTable *pSfx ); + +class CAudioSourceWave : public CAudioSource +{ +public: + CAudioSourceWave( CSfxTable *pSfx ); + CAudioSourceWave( CSfxTable *pSfx, CAudioSourceCachedInfo *info ); + ~CAudioSourceWave( void ); + + virtual int GetType( void ); + virtual void GetCacheData( CAudioSourceCachedInfo *info ); + + void Setup( const char *pFormat, int formatSize, IterateRIFF &walk ); + virtual int SampleRate( void ); + virtual int SampleSize( void ); + virtual int SampleCount( void ); + + virtual int Format( void ); + virtual int DataSize( void ); + + void *GetHeader( void ); + virtual bool IsVoiceSource(); + + virtual void ParseChunk( IterateRIFF &walk, int chunkName ); + virtual void ParseSentence( IterateRIFF &walk ); + + void ConvertSamples( char *pData, int sampleCount ); + bool IsLooped( void ); + bool IsStereoWav( void ); + bool IsStreaming( void ); + int GetCacheStatus( void ); + int ConvertLoopedPosition( int samplePosition ); + void CacheLoad( void ); + void CacheUnload( void ); + virtual int ZeroCrossingBefore( int sample ); + virtual int ZeroCrossingAfter( int sample ); + virtual void ReferenceAdd( CAudioMixer *pMixer ); + virtual void ReferenceRemove( CAudioMixer *pMixer ); + virtual bool CanDelete( void ); + virtual CSentence *GetSentence( void ); + const char *GetName(); + + virtual bool IsAsyncLoad(); + + virtual void CheckAudioSourceCache(); + + virtual char const *GetFileName(); + + // 360 uses alternate play once semantics + virtual void SetPlayOnce( bool bIsPlayOnce ) { m_bIsPlayOnce = IsPC() ? bIsPlayOnce : false; } + virtual bool IsPlayOnce() { return IsPC() ? m_bIsPlayOnce : false; } + + virtual void SetSentenceWord( bool bIsWord ) { m_bIsSentenceWord = bIsWord; } + virtual bool IsSentenceWord() { return m_bIsSentenceWord; } + + int GetLoopingInfo( int *pLoopBlock, int *pNumLeadingSamples, int *pNumTrailingSamples ); + + virtual int SampleToStreamPosition( int samplePosition ) { return 0; } + virtual int StreamToSamplePosition( int streamPosition ) { return 0; } + +protected: + void ParseCueChunk( IterateRIFF &walk ); + void ParseSamplerChunk( IterateRIFF &walk ); + + void Init( const char *pHeaderBuffer, int headerSize ); + bool GetStartupData( void *dest, int destsize, int& bytesCopied ); + bool GetXboxAudioStartupData(); + + //----------------------------------------------------------------------------- + // Purpose: + // Output : byte + //----------------------------------------------------------------------------- + inline byte *GetCachedDataPointer() + { + VPROF("CAudioSourceWave::GetCachedDataPointer"); + + CAudioSourceCachedInfo *info = m_AudioCacheHandle.Get( CAudioSource::AUDIO_SOURCE_WAV, m_pSfx->IsPrecachedSound(), m_pSfx, &m_nCachedDataSize ); + if ( !info ) + { + Assert( !"CAudioSourceWave::GetCachedDataPointer info == NULL" ); + return NULL; + } + + return (byte *)info->CachedData(); + } + + int m_bits; + int m_rate; + int m_channels; + int m_format; + int m_sampleSize; + int m_loopStart; + int m_sampleCount; // can be "samples" or "bytes", depends on format + + CSfxTable *m_pSfx; + CSentence *m_pTempSentence; + + int m_dataStart; // offset of sample data + int m_dataSize; // size of sample data + + char *m_pHeader; + int m_nHeaderSize; + + CAudioSourceCachedInfoHandle_t m_AudioCacheHandle; + + int m_nCachedDataSize; + + // number of actual samples (regardless of format) + // compressed formats alter definition of m_sampleCount + // used to spare expensive calcs by decoders + int m_numDecodedSamples; + + // additional data needed by xma decoder to for looping + unsigned short m_loopBlock; // the block the loop occurs in + unsigned short m_numLeadingSamples; // number of leader samples in the loop block to discard + unsigned short m_numTrailingSamples; // number of trailing samples in the final block to discard + unsigned short unused; + + unsigned int m_bNoSentence : 1; + unsigned int m_bIsPlayOnce : 1; + unsigned int m_bIsSentenceWord : 1; + +private: + CAudioSourceWave( const CAudioSourceWave & ); // not implemented, not allowed + int m_refCount; + +#ifdef _DEBUG + // Only set in debug mode so you can see the name. + const char *m_pDebugName; +#endif +}; + + +#endif // SND_WAVE_SOURCE_H |