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110 lines
3.6 KiB
110 lines
3.6 KiB
5 years ago
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//========= Copyright Valve Corporation, All rights reserved. ============//
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//
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// Purpose:
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//
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// $NoKeywords: $
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//=============================================================================//
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#ifndef SND_MIX_BUF_H
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#define SND_MIX_BUF_H
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2 years ago
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#include "utlvector.h"
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5 years ago
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#if defined( _WIN32 )
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#pragma once
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#endif
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// OPTIMIZE: note that making this larger will not increase performance (12/27/03)
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#define PAINTBUFFER_SIZE 1020 // 44k: was 512
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#define PAINTBUFFER (g_curpaintbuffer)
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#define REARPAINTBUFFER (g_currearpaintbuffer)
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#define CENTERPAINTBUFFER (g_curcenterpaintbuffer)
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enum SoundBufferType_t
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{
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SOUND_BUFFER_PAINT = 0,
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SOUND_BUFFER_ROOM,
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SOUND_BUFFER_FACING,
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SOUND_BUFFER_FACINGAWAY,
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SOUND_BUFFER_DRY,
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SOUND_BUFFER_SPEAKER,
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SOUND_BUFFER_BASETOTAL,
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SOUND_BUFFER_SPECIAL_START = SOUND_BUFFER_BASETOTAL
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};
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// !!! if this is changed, it much be changed in native assembly too !!!
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struct portable_samplepair_t
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{
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int left;
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int right;
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};
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// sound mixing buffer
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#define CPAINTFILTERMEM 3
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#define CPAINTFILTERS 4 // maximum number of consecutive upsample passes per paintbuffer
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struct paintbuffer_t
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{
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bool factive; // if true, mix to this paintbuffer using flags
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bool fsurround; // if true, mix to front and rear paintbuffers using flags
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bool fsurround_center; // if true, mix to front, rear and center paintbuffers using flags
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int idsp_specialdsp;
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int nPrevSpecialDSP;
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int nSpecialDSP;
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int flags; // SOUND_BUSS_ROOM, SOUND_BUSS_FACING, SOUND_BUSS_FACINGAWAY, SOUND_BUSS_SPEAKER, SOUND_BUSS_SPECIAL_DSP, SOUND_BUSS_DRY
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portable_samplepair_t *pbuf; // front stereo mix buffer, for 2 or 4 channel mixing
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portable_samplepair_t *pbufrear; // rear mix buffer, for 4 channel mixing
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portable_samplepair_t *pbufcenter; // center mix buffer, for 5 channel mixing
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int ifilter; // current filter memory buffer to use for upsampling pass
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portable_samplepair_t fltmem[CPAINTFILTERS][CPAINTFILTERMEM]; // filter memory, for upsampling with linear or cubic interpolation
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portable_samplepair_t fltmemrear[CPAINTFILTERS][CPAINTFILTERMEM]; // filter memory, for upsampling with linear or cubic interpolation
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portable_samplepair_t fltmemcenter[CPAINTFILTERS][CPAINTFILTERMEM]; // filter memory, for upsampling with linear or cubic interpolation
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};
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extern "C"
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{
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extern portable_samplepair_t *g_paintbuffer;
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// temp paintbuffer - not included in main list of paintbuffers
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extern portable_samplepair_t *g_temppaintbuffer;
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extern CUtlVector< paintbuffer_t > g_paintBuffers;
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extern void MIX_SetCurrentPaintbuffer( int ipaintbuffer );
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extern int MIX_GetCurrentPaintbufferIndex( void );
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extern paintbuffer_t *MIX_GetCurrentPaintbufferPtr( void );
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extern paintbuffer_t *MIX_GetPPaintFromIPaint( int ipaintbuffer );
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extern void MIX_ClearAllPaintBuffers( int SampleCount, bool clearFilters );
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extern bool MIX_InitAllPaintbuffers(void);
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extern void MIX_FreeAllPaintbuffers(void);
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extern portable_samplepair_t *g_curpaintbuffer;
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extern portable_samplepair_t *g_currearpaintbuffer;
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extern portable_samplepair_t *g_curcenterpaintbuffer;
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};
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// must be at least PAINTBUFFER_SIZE+1 for upsampling
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#define PAINTBUFFER_MEM_SIZE (PAINTBUFFER_SIZE+4)
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// size in samples of copy buffer used by pitch shifters in mixing
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#if defined(_GAMECONSOLE)
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#define TEMP_COPY_BUFFER_SIZE (PAINTBUFFER_MEM_SIZE * 2)
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#else
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// allow more memory for this on PC for developers to pitch-shift their way through dialog
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#define TEMP_COPY_BUFFER_SIZE (PAINTBUFFER_MEM_SIZE * 4)
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#endif
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// hard clip input value to -32767 <= y <= 32767
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#define CLIP(x) ((x) > 32767 ? 32767 : ((x) < -32767 ? -32767 : (x)))
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#endif // SND_MIX_BUF_H
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