pcsxr-1.9.92

[pcsx_rearmed.git] / macosx / plugins / DFSound / src / macosx.c

/***************************************************************************\r
                        macosx.c  -  description\r
                             -------------------\r
    begin                : Wed May 15 2002\r
    copyright            : (C) 2002 by Pete Bernert\r
    email                : BlackDove@addcom.de\r
 ***************************************************************************/\r
\r
/***************************************************************************\r
 *                                                                         *\r
 *   This program is free software; you can redistribute it and/or modify  *\r
 *   it under the terms of the GNU General Public License as published by  *\r
 *   the Free Software Foundation; either version 2 of the License, or     *\r
 *   (at your option) any later version. See also the license.txt file for *\r
 *   additional informations.                                              *\r
 *                                                                         *\r
 ***************************************************************************/\r
\r
#include "stdafx.h"\r
\r
#define _IN_MACOSX\r
\r
#ifdef _MACOSX\r
\r
#include <Carbon/Carbon.h>\r
#include "externals.h"\r
\r
#define kMaxSoundBuffers	20\r
\r
//static int				macBufferSize = 2, macBufferCount = 36;\r
//static float			macSoundPitch = 1.0;\r
static long			   macSoundVolume = 100;\r
volatile int			soundBufferAt = -1, soundPlayAt = -1, soundQueued = 0;\r
char			*soundBuffer[kMaxSoundBuffers+1], *emptyBuffer;\r
SndChannelPtr	sndChannel;\r
//ExtSoundHeader	sndHeader;\r
CmpSoundHeader	sndHeader;\r
SndCallBackUPP	callBackUPP;\r
static int bufferIndex;\r
\r
////////////////////////////////////////////////////////////////////////\r
// small linux time helper... only used for watchdog\r
////////////////////////////////////////////////////////////////////////\r
\r
unsigned long timeGetTime()\r
{\r
 struct timeval tv;\r
 gettimeofday(&tv, 0);                                 // well, maybe there are better ways\r
 return tv.tv_sec * 1000 + tv.tv_usec/1000;            // to do that, but at least it works\r
}\r
\r
pascal void MacProcessSound(SndChannelPtr chan, SndCommand *cmd)\r
{\r
	#pragma unused (chan, cmd)\r
\r
	if (soundQueued <= 0)\r
		sndHeader.samplePtr = emptyBuffer;\r
	else\r
	{\r
		sndHeader.samplePtr = soundBuffer[soundPlayAt];\r
                soundPlayAt++;\r
		if (soundPlayAt >= kMaxSoundBuffers/*macBufferCount*/)\r
			soundPlayAt = 0;\r
		soundQueued--;\r
	}\r
	\r
	SndCommand buffer   = { bufferCmd, 0, (long) &sndHeader };\r
	SndDoImmediate(sndChannel, &buffer);\r
\r
	SndCommand callback = { callBackCmd, 0, 0 };\r
	SndDoCommand(sndChannel, &callback, true);\r
}\r
\r
////////////////////////////////////////////////////////////////////////\r
// SETUP SOUND\r
////////////////////////////////////////////////////////////////////////\r
\r
static int buffer_size;\r
void SetupSound(void)\r
{\r
	int	count;\r
	\r
   callBackUPP = NewSndCallBackUPP(MacProcessSound);\r
   \r
	if (sndChannel)\r
	{\r
		SndDisposeChannel(sndChannel, true);\r
		sndChannel = nil;\r
	}\r
   \r
   buffer_size = 1;\r
   while (buffer_size < (44100 / 60))\r
      buffer_size <<= 1;\r
	\r
  	memset(&sndHeader, 0, sizeof(sndHeader));\r
	sndHeader.numChannels   = (iDisStereo ? 1 : 2);\r
	sndHeader.sampleRate    = 44100 << 16;\r
	sndHeader.encode        = cmpSH;\r
	sndHeader.baseFrequency = kMiddleC;\r
	sndHeader.numFrames     = buffer_size;\r
	sndHeader.sampleSize    = 16;\r
#ifdef __POWERPC__\r
    sndHeader.format        = k16BitBigEndianFormat;\r
#else\r
    sndHeader.format        = k16BitLittleEndianFormat;\r
#endif\r
    sndHeader.compressionID = fixedCompression;\r
   \r
	if (soundBufferAt != -1)\r
	{\r
      free(soundBuffer[0]);\r
		free(emptyBuffer);\r
	}\r
   \r
   soundBuffer[0] = (char *) calloc(buffer_size << 2, kMaxSoundBuffers);\r
	for (count = 1; count <= kMaxSoundBuffers; count++)\r
		soundBuffer[count] = soundBuffer[count-1] + (buffer_size << 2);\r
	emptyBuffer = (char *) calloc(buffer_size << 2, 1);\r
	\r
	soundBufferAt = soundPlayAt = soundQueued = 0;\r
        bufferIndex = 0;\r
	\r
	SndNewChannel(&sndChannel, sampledSynth, initStereo, callBackUPP);\r
\r
	SndCommand	sndcmd;\r
	UInt32		volume;\r
	\r
	volume = (UInt32) (256.0 * (float) macSoundVolume / 100.0);\r
	\r
	sndcmd.cmd = volumeCmd;\r
   sndcmd.param1 = 0;\r
   sndcmd.param2 = (volume << 16) | volume;\r
   SndDoCommand(sndChannel, &sndcmd, true);\r
\r
   sndcmd.cmd = callBackCmd;\r
   sndcmd.param1 = 0;\r
   sndcmd.param2 = 0;	\r
	SndDoCommand(sndChannel, &sndcmd, true);\r
}\r
\r
////////////////////////////////////////////////////////////////////////\r
// REMOVE SOUND\r
////////////////////////////////////////////////////////////////////////\r
\r
void RemoveSound(void)\r
{\r
   DisposeSndCallBackUPP(callBackUPP);\r
}\r
\r
////////////////////////////////////////////////////////////////////////\r
// GET BYTES BUFFERED\r
////////////////////////////////////////////////////////////////////////\r
\r
unsigned long SoundGetBytesBuffered(void)\r
{\r
	int bytes;\r
	int playAt = soundPlayAt;\r
	\r
   if (soundBufferAt < playAt) {\r
      bytes = (soundBuffer[kMaxSoundBuffers]-soundBuffer[playAt])+\r
      (soundBuffer[soundBufferAt]-soundBuffer[0]);\r
   } else {\r
		bytes = soundBuffer[soundBufferAt]-soundBuffer[playAt];\r
	}\r
	//printf("sb=%i\n", bytes);\r
	\r
//	if (bytes < SOUNDSIZE/2)\r
//		return 0;\r
	\r
	return bytes;\r
}\r
\r
////////////////////////////////////////////////////////////////////////\r
// FEED SOUND DATA\r
////////////////////////////////////////////////////////////////////////\r
\r
void SoundFeedStreamData(unsigned char* pSound,long lBytes)\r
{\r
    int rem;\r
    \r
   if (lBytes > (buffer_size<<2)*kMaxSoundBuffers) {\r
      printf("sound feed overflow!\n");\r
      return;\r
   }\r
\r
   rem = soundBuffer[kMaxSoundBuffers]-(soundBuffer[soundBufferAt]+bufferIndex);\r
   if (lBytes > rem) {\r
      memcpy(soundBuffer[soundBufferAt]+bufferIndex, pSound, rem);\r
      lBytes -= rem; pSound += rem;\r
      soundQueued += kMaxSoundBuffers-soundBufferAt;\r
      soundBufferAt = 0; bufferIndex = 0;\r
   }\r
   memcpy(soundBuffer[soundBufferAt]+bufferIndex, pSound, lBytes);\r
   soundBufferAt += (lBytes+bufferIndex)/(buffer_size<<2);\r
   soundQueued += (lBytes+bufferIndex)/(buffer_size<<2);\r
   bufferIndex = (lBytes+bufferIndex)%(buffer_size<<2);\r
   \r
   if (soundQueued >= kMaxSoundBuffers) {\r
      printf("sound buffer overflow!\n");\r
   }\r
}\r
\r
#endif\r