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ef79bbde P |
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 |