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