| 1 | /***************************************************************************\r |
| 2 | macosx.c - description\r |
| 3 | -------------------\r |
| 4 | begin : Wed May 15 2002\r |
| 5 | copyright : (C) 2002 by Pete Bernert\r |
| 6 | email : BlackDove@addcom.de\r |
| 7 | ***************************************************************************/\r |
| 8 | \r |
| 9 | /***************************************************************************\r |
| 10 | * *\r |
| 11 | * This program is free software; you can redistribute it and/or modify *\r |
| 12 | * it under the terms of the GNU General Public License as published by *\r |
| 13 | * the Free Software Foundation; either version 2 of the License, or *\r |
| 14 | * (at your option) any later version. See also the license.txt file for *\r |
| 15 | * additional informations. *\r |
| 16 | * *\r |
| 17 | ***************************************************************************/\r |
| 18 | \r |
| 19 | #include "stdafx.h"\r |
| 20 | \r |
| 21 | #define _IN_MACOSX\r |
| 22 | \r |
| 23 | #ifdef _MACOSX\r |
| 24 | \r |
| 25 | #include <Carbon/Carbon.h>\r |
| 26 | #include "externals.h"\r |
| 27 | \r |
| 28 | #define kMaxSoundBuffers 20\r |
| 29 | \r |
| 30 | //static int macBufferSize = 2, macBufferCount = 36;\r |
| 31 | //static float macSoundPitch = 1.0;\r |
| 32 | static long macSoundVolume = 100;\r |
| 33 | volatile int soundBufferAt = -1, soundPlayAt = -1, soundQueued = 0;\r |
| 34 | char *soundBuffer[kMaxSoundBuffers+1], *emptyBuffer;\r |
| 35 | SndChannelPtr sndChannel;\r |
| 36 | //ExtSoundHeader sndHeader;\r |
| 37 | CmpSoundHeader sndHeader;\r |
| 38 | SndCallBackUPP callBackUPP;\r |
| 39 | static int bufferIndex;\r |
| 40 | \r |
| 41 | ////////////////////////////////////////////////////////////////////////\r |
| 42 | // small linux time helper... only used for watchdog\r |
| 43 | ////////////////////////////////////////////////////////////////////////\r |
| 44 | \r |
| 45 | unsigned long timeGetTime()\r |
| 46 | {\r |
| 47 | struct timeval tv;\r |
| 48 | gettimeofday(&tv, 0); // well, maybe there are better ways\r |
| 49 | return tv.tv_sec * 1000 + tv.tv_usec/1000; // to do that, but at least it works\r |
| 50 | }\r |
| 51 | \r |
| 52 | pascal void MacProcessSound(SndChannelPtr chan, SndCommand *cmd)\r |
| 53 | {\r |
| 54 | #pragma unused (chan, cmd)\r |
| 55 | \r |
| 56 | if (soundQueued <= 0)\r |
| 57 | sndHeader.samplePtr = emptyBuffer;\r |
| 58 | else\r |
| 59 | {\r |
| 60 | sndHeader.samplePtr = soundBuffer[soundPlayAt];\r |
| 61 | soundPlayAt++;\r |
| 62 | if (soundPlayAt >= kMaxSoundBuffers/*macBufferCount*/)\r |
| 63 | soundPlayAt = 0;\r |
| 64 | soundQueued--;\r |
| 65 | }\r |
| 66 | \r |
| 67 | SndCommand buffer = { bufferCmd, 0, (long) &sndHeader };\r |
| 68 | SndDoImmediate(sndChannel, &buffer);\r |
| 69 | \r |
| 70 | SndCommand callback = { callBackCmd, 0, 0 };\r |
| 71 | SndDoCommand(sndChannel, &callback, true);\r |
| 72 | }\r |
| 73 | \r |
| 74 | ////////////////////////////////////////////////////////////////////////\r |
| 75 | // SETUP SOUND\r |
| 76 | ////////////////////////////////////////////////////////////////////////\r |
| 77 | \r |
| 78 | static int buffer_size;\r |
| 79 | void SetupSound(void)\r |
| 80 | {\r |
| 81 | int count;\r |
| 82 | \r |
| 83 | callBackUPP = NewSndCallBackUPP(MacProcessSound);\r |
| 84 | \r |
| 85 | if (sndChannel)\r |
| 86 | {\r |
| 87 | SndDisposeChannel(sndChannel, true);\r |
| 88 | sndChannel = nil;\r |
| 89 | }\r |
| 90 | \r |
| 91 | buffer_size = 1;\r |
| 92 | while (buffer_size < (44100 / 60))\r |
| 93 | buffer_size <<= 1;\r |
| 94 | \r |
| 95 | memset(&sndHeader, 0, sizeof(sndHeader));\r |
| 96 | sndHeader.numChannels = (iDisStereo ? 1 : 2);\r |
| 97 | sndHeader.sampleRate = 44100 << 16;\r |
| 98 | sndHeader.encode = cmpSH;\r |
| 99 | sndHeader.baseFrequency = kMiddleC;\r |
| 100 | sndHeader.numFrames = buffer_size;\r |
| 101 | sndHeader.sampleSize = 16;\r |
| 102 | #ifdef __POWERPC__\r |
| 103 | sndHeader.format = k16BitBigEndianFormat;\r |
| 104 | #else\r |
| 105 | sndHeader.format = k16BitLittleEndianFormat;\r |
| 106 | #endif\r |
| 107 | sndHeader.compressionID = fixedCompression;\r |
| 108 | \r |
| 109 | if (soundBufferAt != -1)\r |
| 110 | {\r |
| 111 | free(soundBuffer[0]);\r |
| 112 | free(emptyBuffer);\r |
| 113 | }\r |
| 114 | \r |
| 115 | soundBuffer[0] = (char *) calloc(buffer_size << 2, kMaxSoundBuffers);\r |
| 116 | for (count = 1; count <= kMaxSoundBuffers; count++)\r |
| 117 | soundBuffer[count] = soundBuffer[count-1] + (buffer_size << 2);\r |
| 118 | emptyBuffer = (char *) calloc(buffer_size << 2, 1);\r |
| 119 | \r |
| 120 | soundBufferAt = soundPlayAt = soundQueued = 0;\r |
| 121 | bufferIndex = 0;\r |
| 122 | \r |
| 123 | SndNewChannel(&sndChannel, sampledSynth, initStereo, callBackUPP);\r |
| 124 | \r |
| 125 | SndCommand sndcmd;\r |
| 126 | UInt32 volume;\r |
| 127 | \r |
| 128 | volume = (UInt32) (256.0 * (float) macSoundVolume / 100.0);\r |
| 129 | \r |
| 130 | sndcmd.cmd = volumeCmd;\r |
| 131 | sndcmd.param1 = 0;\r |
| 132 | sndcmd.param2 = (volume << 16) | volume;\r |
| 133 | SndDoCommand(sndChannel, &sndcmd, true);\r |
| 134 | \r |
| 135 | sndcmd.cmd = callBackCmd;\r |
| 136 | sndcmd.param1 = 0;\r |
| 137 | sndcmd.param2 = 0; \r |
| 138 | SndDoCommand(sndChannel, &sndcmd, true);\r |
| 139 | }\r |
| 140 | \r |
| 141 | ////////////////////////////////////////////////////////////////////////\r |
| 142 | // REMOVE SOUND\r |
| 143 | ////////////////////////////////////////////////////////////////////////\r |
| 144 | \r |
| 145 | void RemoveSound(void)\r |
| 146 | {\r |
| 147 | DisposeSndCallBackUPP(callBackUPP);\r |
| 148 | }\r |
| 149 | \r |
| 150 | ////////////////////////////////////////////////////////////////////////\r |
| 151 | // GET BYTES BUFFERED\r |
| 152 | ////////////////////////////////////////////////////////////////////////\r |
| 153 | \r |
| 154 | unsigned long SoundGetBytesBuffered(void)\r |
| 155 | {\r |
| 156 | int bytes;\r |
| 157 | int playAt = soundPlayAt;\r |
| 158 | \r |
| 159 | if (soundBufferAt < playAt) {\r |
| 160 | bytes = (soundBuffer[kMaxSoundBuffers]-soundBuffer[playAt])+\r |
| 161 | (soundBuffer[soundBufferAt]-soundBuffer[0]);\r |
| 162 | } else {\r |
| 163 | bytes = soundBuffer[soundBufferAt]-soundBuffer[playAt];\r |
| 164 | }\r |
| 165 | //printf("sb=%i\n", bytes);\r |
| 166 | \r |
| 167 | // if (bytes < SOUNDSIZE/2)\r |
| 168 | // return 0;\r |
| 169 | \r |
| 170 | return bytes;\r |
| 171 | }\r |
| 172 | \r |
| 173 | ////////////////////////////////////////////////////////////////////////\r |
| 174 | // FEED SOUND DATA\r |
| 175 | ////////////////////////////////////////////////////////////////////////\r |
| 176 | \r |
| 177 | void SoundFeedStreamData(unsigned char* pSound,long lBytes)\r |
| 178 | {\r |
| 179 | int rem;\r |
| 180 | \r |
| 181 | if (lBytes > (buffer_size<<2)*kMaxSoundBuffers) {\r |
| 182 | printf("sound feed overflow!\n");\r |
| 183 | return;\r |
| 184 | }\r |
| 185 | \r |
| 186 | rem = soundBuffer[kMaxSoundBuffers]-(soundBuffer[soundBufferAt]+bufferIndex);\r |
| 187 | if (lBytes > rem) {\r |
| 188 | memcpy(soundBuffer[soundBufferAt]+bufferIndex, pSound, rem);\r |
| 189 | lBytes -= rem; pSound += rem;\r |
| 190 | soundQueued += kMaxSoundBuffers-soundBufferAt;\r |
| 191 | soundBufferAt = 0; bufferIndex = 0;\r |
| 192 | }\r |
| 193 | memcpy(soundBuffer[soundBufferAt]+bufferIndex, pSound, lBytes);\r |
| 194 | soundBufferAt += (lBytes+bufferIndex)/(buffer_size<<2);\r |
| 195 | soundQueued += (lBytes+bufferIndex)/(buffer_size<<2);\r |
| 196 | bufferIndex = (lBytes+bufferIndex)%(buffer_size<<2);\r |
| 197 | \r |
| 198 | if (soundQueued >= kMaxSoundBuffers) {\r |
| 199 | printf("sound buffer overflow!\n");\r |
| 200 | }\r |
| 201 | }\r |
| 202 | \r |
| 203 | #endif\r |