Mercurial > sdl-ios-xcode
annotate src/audio/ums/SDL_umsaudio.c @ 2191:29e07f91bc1f
Rename LockAudio,UnlockAudio to LockDevice,UnlockDevice. Also some small fixes
author | Patrice Mandin <patmandin@gmail.com> |
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date | Fri, 13 Jul 2007 23:58:22 +0000 |
parents | 5f6550e5184f |
children | e27bdcc80744 |
rev | line source |
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Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
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1 /* I'm gambling no one uses this audio backend...we'll see who emails. :) */ |
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2 #error this code has not been updated for SDL 1.3. |
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3 #error if no one emails icculus at icculus.org and tells him that this |
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4 #error code is needed, this audio backend will eventually be removed from SDL. |
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5 |
0 | 6 /* |
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7 SDL - Simple DirectMedia Layer |
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8 Copyright (C) 1997-2006 Sam Lantinga |
0 | 9 |
10 This library is free software; you can redistribute it and/or | |
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11 modify it under the terms of the GNU Lesser General Public |
0 | 12 License as published by the Free Software Foundation; either |
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13 version 2.1 of the License, or (at your option) any later version. |
0 | 14 |
15 This library is distributed in the hope that it will be useful, | |
16 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
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18 Lesser General Public License for more details. |
0 | 19 |
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20 You should have received a copy of the GNU Lesser General Public |
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21 License along with this library; if not, write to the Free Software |
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22 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
0 | 23 |
24 Carsten Griwodz | |
25 griff@kom.tu-darmstadt.de | |
26 | |
27 based on linux/SDL_dspaudio.c by Sam Lantinga | |
28 */ | |
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29 #include "SDL_config.h" |
0 | 30 |
31 /* Allow access to a raw mixing buffer */ | |
32 | |
33 #include <errno.h> | |
34 #include <unistd.h> | |
35 #include <fcntl.h> | |
36 #include <sys/types.h> | |
37 #include <sys/time.h> | |
38 #include <sys/ioctl.h> | |
39 #include <sys/stat.h> | |
40 #include <sys/mman.h> | |
41 | |
42 #include "SDL_audio.h" | |
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43 #include "../SDL_audio_c.h" |
0 | 44 #include "SDL_umsaudio.h" |
45 | |
46 /* The tag name used by UMS audio */ | |
47 #define UMS_DRIVER_NAME "ums" | |
48 | |
49 #define DEBUG_AUDIO 1 | |
50 | |
51 /* Audio driver functions */ | |
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52 static int UMS_OpenAudio(_THIS, SDL_AudioSpec * spec); |
0 | 53 static void UMS_PlayAudio(_THIS); |
54 static Uint8 *UMS_GetAudioBuf(_THIS); | |
55 static void UMS_CloseAudio(_THIS); | |
56 | |
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57 static UMSAudioDevice_ReturnCode UADOpen(_THIS, string device, string mode, |
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58 long flags); |
0 | 59 static UMSAudioDevice_ReturnCode UADClose(_THIS); |
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60 static UMSAudioDevice_ReturnCode UADGetBitsPerSample(_THIS, long *bits); |
0 | 61 static UMSAudioDevice_ReturnCode UADSetBitsPerSample(_THIS, long bits); |
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62 static UMSAudioDevice_ReturnCode UADSetSampleRate(_THIS, long rate, |
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63 long *set_rate); |
0 | 64 static UMSAudioDevice_ReturnCode UADSetByteOrder(_THIS, string byte_order); |
65 static UMSAudioDevice_ReturnCode UADSetAudioFormatType(_THIS, string fmt); | |
66 static UMSAudioDevice_ReturnCode UADSetNumberFormat(_THIS, string fmt); | |
67 static UMSAudioDevice_ReturnCode UADInitialize(_THIS); | |
68 static UMSAudioDevice_ReturnCode UADStart(_THIS); | |
69 static UMSAudioDevice_ReturnCode UADStop(_THIS); | |
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70 static UMSAudioDevice_ReturnCode UADSetTimeFormat(_THIS, |
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71 UMSAudioTypes_TimeFormat |
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72 fmt); |
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73 static UMSAudioDevice_ReturnCode UADWriteBuffSize(_THIS, long *buff_size); |
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74 static UMSAudioDevice_ReturnCode UADWriteBuffRemain(_THIS, long *buff_size); |
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75 static UMSAudioDevice_ReturnCode UADWriteBuffUsed(_THIS, long *buff_size); |
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76 static UMSAudioDevice_ReturnCode UADSetDMABufferSize(_THIS, long bytes, |
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77 long *bytes_ret); |
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78 static UMSAudioDevice_ReturnCode UADSetVolume(_THIS, long volume); |
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79 static UMSAudioDevice_ReturnCode UADSetBalance(_THIS, long balance); |
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80 static UMSAudioDevice_ReturnCode UADSetChannels(_THIS, long channels); |
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81 static UMSAudioDevice_ReturnCode UADPlayRemainingData(_THIS, boolean block); |
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82 static UMSAudioDevice_ReturnCode UADEnableOutput(_THIS, string output, |
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83 long *left_gain, |
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84 long *right_gain); |
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85 static UMSAudioDevice_ReturnCode UADWrite(_THIS, UMSAudioTypes_Buffer * buff, |
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86 long samples, |
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87 long *samples_written); |
0 | 88 |
89 /* Audio driver bootstrap functions */ | |
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90 static int |
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91 Audio_Available(void) |
0 | 92 { |
93 return 1; | |
94 } | |
95 | |
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96 static void |
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97 Audio_DeleteDevice(_THIS) |
0 | 98 { |
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99 if (this->hidden->playbuf._buffer) |
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100 SDL_free(this->hidden->playbuf._buffer); |
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101 if (this->hidden->fillbuf._buffer) |
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102 SDL_free(this->hidden->fillbuf._buffer); |
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103 _somFree(this->hidden->umsdev); |
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104 SDL_free(this->hidden); |
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105 SDL_free(this); |
0 | 106 } |
107 | |
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108 static SDL_AudioDevice * |
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109 Audio_CreateDevice(int devindex) |
0 | 110 { |
111 SDL_AudioDevice *this; | |
112 | |
113 /* | |
114 * Allocate and initialize management storage and private management | |
115 * storage for this SDL-using library. | |
116 */ | |
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117 this = (SDL_AudioDevice *) SDL_malloc(sizeof(SDL_AudioDevice)); |
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118 if (this) { |
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119 SDL_memset(this, 0, (sizeof *this)); |
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120 this->hidden = (struct SDL_PrivateAudioData *) |
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121 SDL_malloc((sizeof *this->hidden)); |
0 | 122 } |
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123 if ((this == NULL) || (this->hidden == NULL)) { |
0 | 124 SDL_OutOfMemory(); |
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125 if (this) { |
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126 SDL_free(this); |
0 | 127 } |
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128 return (0); |
0 | 129 } |
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130 SDL_memset(this->hidden, 0, (sizeof *this->hidden)); |
0 | 131 #ifdef DEBUG_AUDIO |
132 fprintf(stderr, "Creating UMS Audio device\n"); | |
133 #endif | |
134 | |
135 /* | |
136 * Calls for UMS env initialization and audio object construction. | |
137 */ | |
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138 this->hidden->ev = somGetGlobalEnvironment(); |
0 | 139 this->hidden->umsdev = UMSAudioDeviceNew(); |
140 | |
141 /* | |
142 * Set the function pointers. | |
143 */ | |
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144 this->OpenAudio = UMS_OpenAudio; |
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145 this->WaitAudio = NULL; /* we do blocking output */ |
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146 this->PlayAudio = UMS_PlayAudio; |
0 | 147 this->GetAudioBuf = UMS_GetAudioBuf; |
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148 this->CloseAudio = UMS_CloseAudio; |
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149 this->free = Audio_DeleteDevice; |
0 | 150 |
151 #ifdef DEBUG_AUDIO | |
152 fprintf(stderr, "done\n"); | |
153 #endif | |
154 return this; | |
155 } | |
156 | |
157 AudioBootStrap UMS_bootstrap = { | |
2041 | 158 UMS_DRIVER_NAME, "AIX UMS audio", |
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159 Audio_Available, Audio_CreateDevice, 0 |
0 | 160 }; |
161 | |
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162 static Uint8 * |
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163 UMS_GetAudioBuf(_THIS) |
0 | 164 { |
165 #ifdef DEBUG_AUDIO | |
166 fprintf(stderr, "enter UMS_GetAudioBuf\n"); | |
167 #endif | |
168 return this->hidden->fillbuf._buffer; | |
169 /* | |
170 long bufSize; | |
171 UMSAudioDevice_ReturnCode rc; | |
172 | |
173 rc = UADSetTimeFormat(this, UMSAudioTypes_Bytes ); | |
174 rc = UADWriteBuffSize(this, bufSize ); | |
175 */ | |
176 } | |
177 | |
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178 static void |
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179 UMS_CloseAudio(_THIS) |
0 | 180 { |
181 UMSAudioDevice_ReturnCode rc; | |
182 | |
183 #ifdef DEBUG_AUDIO | |
184 fprintf(stderr, "enter UMS_CloseAudio\n"); | |
185 #endif | |
186 rc = UADPlayRemainingData(this, TRUE); | |
187 rc = UADStop(this); | |
188 rc = UADClose(this); | |
189 } | |
190 | |
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191 static void |
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192 UMS_PlayAudio(_THIS) |
0 | 193 { |
194 UMSAudioDevice_ReturnCode rc; | |
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195 long samplesToWrite; |
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196 long samplesWritten; |
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197 UMSAudioTypes_Buffer swpbuf; |
0 | 198 |
199 #ifdef DEBUG_AUDIO | |
200 fprintf(stderr, "enter UMS_PlayAudio\n"); | |
201 #endif | |
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202 samplesToWrite = |
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203 this->hidden->playbuf._length / this->hidden->bytesPerSample; |
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204 do { |
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205 rc = UADWrite(this, &this->hidden->playbuf, |
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206 samplesToWrite, &samplesWritten); |
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207 samplesToWrite -= samplesWritten; |
0 | 208 |
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209 /* rc values: UMSAudioDevice_Success |
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210 * UMSAudioDevice_Failure |
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211 * UMSAudioDevice_Preempted |
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212 * UMSAudioDevice_Interrupted |
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213 * UMSAudioDevice_DeviceError |
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214 */ |
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215 if (rc == UMSAudioDevice_DeviceError) { |
0 | 216 #ifdef DEBUG_AUDIO |
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217 fprintf(stderr, "Returning from PlayAudio with devices error\n"); |
0 | 218 #endif |
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219 return; |
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220 } |
0 | 221 } |
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222 while (samplesToWrite > 0); |
0 | 223 |
224 SDL_LockAudio(); | |
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225 SDL_memcpy(&swpbuf, &this->hidden->playbuf, sizeof(UMSAudioTypes_Buffer)); |
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226 SDL_memcpy(&this->hidden->playbuf, &this->hidden->fillbuf, |
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227 sizeof(UMSAudioTypes_Buffer)); |
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228 SDL_memcpy(&this->hidden->fillbuf, &swpbuf, sizeof(UMSAudioTypes_Buffer)); |
0 | 229 SDL_UnlockAudio(); |
230 | |
231 #ifdef DEBUG_AUDIO | |
232 fprintf(stderr, "Wrote audio data and swapped buffer\n"); | |
233 #endif | |
234 } | |
235 | |
236 #if 0 | |
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237 // /* Set the DSP frequency */ |
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238 // value = spec->freq; |
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239 // if ( ioctl(this->hidden->audio_fd, SOUND_PCM_WRITE_RATE, &value) < 0 ) { |
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240 // SDL_SetError("Couldn't set audio frequency"); |
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241 // return(-1); |
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242 // } |
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243 // spec->freq = value; |
0 | 244 #endif |
245 | |
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246 static int |
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247 UMS_OpenAudio(_THIS, SDL_AudioSpec * spec) |
0 | 248 { |
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249 char *audiodev = "/dev/paud0"; |
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250 long lgain; |
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251 long rgain; |
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252 long outRate; |
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253 long outBufSize; |
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254 long bitsPerSample; |
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255 long samplesPerSec; |
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256 long success; |
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257 SDL_AudioFormat test_format; |
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258 int frag_spec; |
0 | 259 UMSAudioDevice_ReturnCode rc; |
260 | |
261 #ifdef DEBUG_AUDIO | |
262 fprintf(stderr, "enter UMS_OpenAudio\n"); | |
263 #endif | |
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264 rc = UADOpen(this, audiodev, "PLAY", UMSAudioDevice_BlockingIO); |
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265 if (rc != UMSAudioDevice_Success) { |
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266 SDL_SetError("Couldn't open %s: %s", audiodev, strerror(errno)); |
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267 return -1; |
0 | 268 } |
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269 |
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270 rc = UADSetAudioFormatType(this, "PCM"); |
0 | 271 |
272 success = 0; | |
273 test_format = SDL_FirstAudioFormat(spec->format); | |
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274 do { |
0 | 275 #ifdef DEBUG_AUDIO |
276 fprintf(stderr, "Trying format 0x%4.4x\n", test_format); | |
277 #endif | |
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278 switch (test_format) { |
0 | 279 case AUDIO_U8: |
280 /* from the mac code: better ? */ | |
281 /* sample_bits = spec->size / spec->samples / spec->channels * 8; */ | |
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282 success = 1; |
0 | 283 bitsPerSample = 8; |
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284 rc = UADSetSampleRate(this, spec->freq << 16, &outRate); |
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285 rc = UADSetByteOrder(this, "MSB"); /* irrelevant */ |
0 | 286 rc = UADSetNumberFormat(this, "UNSIGNED"); |
287 break; | |
288 case AUDIO_S8: | |
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289 success = 1; |
0 | 290 bitsPerSample = 8; |
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291 rc = UADSetSampleRate(this, spec->freq << 16, &outRate); |
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292 rc = UADSetByteOrder(this, "MSB"); /* irrelevant */ |
0 | 293 rc = UADSetNumberFormat(this, "SIGNED"); |
294 break; | |
295 case AUDIO_S16LSB: | |
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296 success = 1; |
0 | 297 bitsPerSample = 16; |
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298 rc = UADSetSampleRate(this, spec->freq << 16, &outRate); |
0 | 299 rc = UADSetByteOrder(this, "LSB"); |
300 rc = UADSetNumberFormat(this, "SIGNED"); | |
301 break; | |
302 case AUDIO_S16MSB: | |
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303 success = 1; |
0 | 304 bitsPerSample = 16; |
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305 rc = UADSetSampleRate(this, spec->freq << 16, &outRate); |
0 | 306 rc = UADSetByteOrder(this, "MSB"); |
307 rc = UADSetNumberFormat(this, "SIGNED"); | |
308 break; | |
309 case AUDIO_U16LSB: | |
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310 success = 1; |
0 | 311 bitsPerSample = 16; |
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312 rc = UADSetSampleRate(this, spec->freq << 16, &outRate); |
0 | 313 rc = UADSetByteOrder(this, "LSB"); |
314 rc = UADSetNumberFormat(this, "UNSIGNED"); | |
315 break; | |
316 case AUDIO_U16MSB: | |
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317 success = 1; |
0 | 318 bitsPerSample = 16; |
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319 rc = UADSetSampleRate(this, spec->freq << 16, &outRate); |
0 | 320 rc = UADSetByteOrder(this, "MSB"); |
321 rc = UADSetNumberFormat(this, "UNSIGNED"); | |
322 break; | |
323 default: | |
324 break; | |
325 } | |
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326 if (!success) { |
0 | 327 test_format = SDL_NextAudioFormat(); |
328 } | |
329 } | |
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330 while (!success && test_format); |
0 | 331 |
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332 if (success == 0) { |
0 | 333 SDL_SetError("Couldn't find any hardware audio formats"); |
334 return -1; | |
335 } | |
336 | |
337 spec->format = test_format; | |
338 | |
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339 for (frag_spec = 0; (0x01 << frag_spec) < spec->size; ++frag_spec); |
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340 if ((0x01 << frag_spec) != spec->size) { |
0 | 341 SDL_SetError("Fragment size must be a power of two"); |
342 return -1; | |
343 } | |
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344 if (frag_spec > 2048) |
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345 frag_spec = 2048; |
0 | 346 |
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347 this->hidden->bytesPerSample = (bitsPerSample / 8) * spec->channels; |
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348 samplesPerSec = this->hidden->bytesPerSample * outRate; |
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349 |
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350 this->hidden->playbuf._length = 0; |
0 | 351 this->hidden->playbuf._maximum = spec->size; |
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352 this->hidden->playbuf._buffer = (unsigned char *) SDL_malloc(spec->size); |
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353 this->hidden->fillbuf._length = 0; |
0 | 354 this->hidden->fillbuf._maximum = spec->size; |
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355 this->hidden->fillbuf._buffer = (unsigned char *) SDL_malloc(spec->size); |
0 | 356 |
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357 rc = UADSetBitsPerSample(this, bitsPerSample); |
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358 rc = UADSetDMABufferSize(this, frag_spec, &outBufSize); |
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359 rc = UADSetChannels(this, spec->channels); /* functions reduces to mono or stereo */ |
0 | 360 |
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361 lgain = 100; /*maximum left input gain */ |
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362 rgain = 100; /*maimum right input gain */ |
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363 rc = UADEnableOutput(this, "LINE_OUT", &lgain, &rgain); |
0 | 364 rc = UADInitialize(this); |
365 rc = UADStart(this); | |
366 rc = UADSetVolume(this, 100); | |
367 rc = UADSetBalance(this, 0); | |
368 | |
369 /* We're ready to rock and roll. :-) */ | |
370 return 0; | |
371 } | |
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372 |
0 | 373 |
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374 static UMSAudioDevice_ReturnCode |
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375 UADGetBitsPerSample(_THIS, long *bits) |
0 | 376 { |
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377 return UMSAudioDevice_get_bits_per_sample(this->hidden->umsdev, |
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378 this->hidden->ev, bits); |
0 | 379 } |
380 | |
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381 static UMSAudioDevice_ReturnCode |
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382 UADSetBitsPerSample(_THIS, long bits) |
0 | 383 { |
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384 return UMSAudioDevice_set_bits_per_sample(this->hidden->umsdev, |
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385 this->hidden->ev, bits); |
0 | 386 } |
387 | |
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388 static UMSAudioDevice_ReturnCode |
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389 UADSetSampleRate(_THIS, long rate, long *set_rate) |
0 | 390 { |
391 /* from the mac code: sample rate = spec->freq << 16; */ | |
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392 return UMSAudioDevice_set_sample_rate(this->hidden->umsdev, |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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393 this->hidden->ev, rate, set_rate); |
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394 } |
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395 |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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396 static UMSAudioDevice_ReturnCode |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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397 UADSetByteOrder(_THIS, string byte_order) |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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398 { |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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399 return UMSAudioDevice_set_byte_order(this->hidden->umsdev, |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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400 this->hidden->ev, byte_order); |
0 | 401 } |
402 | |
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403 static UMSAudioDevice_ReturnCode |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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404 UADSetAudioFormatType(_THIS, string fmt) |
0 | 405 { |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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406 /* possible PCM, A_LAW or MU_LAW */ |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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407 return UMSAudioDevice_set_audio_format_type(this->hidden->umsdev, |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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408 this->hidden->ev, fmt); |
0 | 409 } |
410 | |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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411 static UMSAudioDevice_ReturnCode |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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412 UADSetNumberFormat(_THIS, string fmt) |
0 | 413 { |
414 /* possible SIGNED, UNSIGNED, or TWOS_COMPLEMENT */ | |
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415 return UMSAudioDevice_set_number_format(this->hidden->umsdev, |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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416 this->hidden->ev, fmt); |
0 | 417 } |
418 | |
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419 static UMSAudioDevice_ReturnCode |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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420 UADInitialize(_THIS) |
0 | 421 { |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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422 return UMSAudioDevice_initialize(this->hidden->umsdev, this->hidden->ev); |
0 | 423 } |
424 | |
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425 static UMSAudioDevice_ReturnCode |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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426 UADStart(_THIS) |
0 | 427 { |
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428 return UMSAudioDevice_start(this->hidden->umsdev, this->hidden->ev); |
0 | 429 } |
430 | |
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431 static UMSAudioDevice_ReturnCode |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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432 UADSetTimeFormat(_THIS, UMSAudioTypes_TimeFormat fmt) |
0 | 433 { |
434 /* | |
435 * Switches the time format to the new format, immediately. | |
436 * possible UMSAudioTypes_Msecs, UMSAudioTypes_Bytes or UMSAudioTypes_Samples | |
437 */ | |
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438 return UMSAudioDevice_set_time_format(this->hidden->umsdev, |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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439 this->hidden->ev, fmt); |
0 | 440 } |
441 | |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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442 static UMSAudioDevice_ReturnCode |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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443 UADWriteBuffSize(_THIS, long *buff_size) |
0 | 444 { |
445 /* | |
446 * returns write buffer size in the current time format | |
447 */ | |
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448 return UMSAudioDevice_write_buff_size(this->hidden->umsdev, |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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449 this->hidden->ev, buff_size); |
0 | 450 } |
451 | |
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452 static UMSAudioDevice_ReturnCode |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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453 UADWriteBuffRemain(_THIS, long *buff_size) |
0 | 454 { |
455 /* | |
456 * returns amount of available space in the write buffer | |
457 * in the current time format | |
458 */ | |
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459 return UMSAudioDevice_write_buff_remain(this->hidden->umsdev, |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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460 this->hidden->ev, buff_size); |
0 | 461 } |
462 | |
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463 static UMSAudioDevice_ReturnCode |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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464 UADWriteBuffUsed(_THIS, long *buff_size) |
0 | 465 { |
466 /* | |
467 * returns amount of filled space in the write buffer | |
468 * in the current time format | |
469 */ | |
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470 return UMSAudioDevice_write_buff_used(this->hidden->umsdev, |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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471 this->hidden->ev, buff_size); |
0 | 472 } |
473 | |
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474 static UMSAudioDevice_ReturnCode |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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475 UADSetDMABufferSize(_THIS, long bytes, long *bytes_ret) |
0 | 476 { |
477 /* | |
478 * Request a new DMA buffer size, maximum requested size 2048. | |
479 * Takes effect with next initialize() call. | |
480 * Devices may or may not support DMA. | |
481 */ | |
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482 return UMSAudioDevice_set_DMA_buffer_size(this->hidden->umsdev, |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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483 this->hidden->ev, |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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484 bytes, bytes_ret); |
0 | 485 } |
486 | |
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487 static UMSAudioDevice_ReturnCode |
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488 UADSetVolume(_THIS, long volume) |
0 | 489 { |
490 /* | |
491 * Set the volume. | |
492 * Takes effect immediately. | |
493 */ | |
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494 return UMSAudioDevice_set_volume(this->hidden->umsdev, |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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495 this->hidden->ev, volume); |
0 | 496 } |
497 | |
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498 static UMSAudioDevice_ReturnCode |
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499 UADSetBalance(_THIS, long balance) |
0 | 500 { |
501 /* | |
502 * Set the balance. | |
503 * Takes effect immediately. | |
504 */ | |
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505 return UMSAudioDevice_set_balance(this->hidden->umsdev, |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
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506 this->hidden->ev, balance); |
0 | 507 } |
508 | |
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|
509 static UMSAudioDevice_ReturnCode |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
510 UADSetChannels(_THIS, long channels) |
0 | 511 { |
512 /* | |
513 * Set mono or stereo. | |
514 * Takes effect with next initialize() call. | |
515 */ | |
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|
516 if (channels != 1) |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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517 channels = 2; |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
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|
518 return UMSAudioDevice_set_number_of_channels(this->hidden->umsdev, |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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|
519 this->hidden->ev, channels); |
0 | 520 } |
521 | |
1895
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parents:
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|
522 static UMSAudioDevice_ReturnCode |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
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523 UADOpen(_THIS, string device, string mode, long flags) |
0 | 524 { |
1895
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
525 return UMSAudioDevice_open(this->hidden->umsdev, |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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|
526 this->hidden->ev, device, mode, flags); |
0 | 527 } |
528 | |
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parents:
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changeset
|
529 static UMSAudioDevice_ReturnCode |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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|
530 UADWrite(_THIS, UMSAudioTypes_Buffer * buff, |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
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|
531 long samples, long *samples_written) |
0 | 532 { |
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|
533 return UMSAudioDevice_write(this->hidden->umsdev, |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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|
534 this->hidden->ev, |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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|
535 buff, samples, samples_written); |
0 | 536 } |
537 | |
1895
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parents:
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|
538 static UMSAudioDevice_ReturnCode |
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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|
539 UADPlayRemainingData(_THIS, boolean block) |
0 | 540 { |
1895
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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|
541 return UMSAudioDevice_play_remaining_data(this->hidden->umsdev, |
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
|
542 this->hidden->ev, block); |
0 | 543 } |
544 | |
1895
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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|
545 static UMSAudioDevice_ReturnCode |
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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|
546 UADStop(_THIS) |
0 | 547 { |
1895
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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|
548 return UMSAudioDevice_stop(this->hidden->umsdev, this->hidden->ev); |
0 | 549 } |
550 | |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents:
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|
551 static UMSAudioDevice_ReturnCode |
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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|
552 UADClose(_THIS) |
0 | 553 { |
1895
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
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|
554 return UMSAudioDevice_close(this->hidden->umsdev, this->hidden->ev); |
0 | 555 } |
556 | |
1895
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
557 static UMSAudioDevice_ReturnCode |
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
558 UADEnableOutput(_THIS, string output, long *left_gain, long *right_gain) |
0 | 559 { |
1895
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Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
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|
560 return UMSAudioDevice_enable_output(this->hidden->umsdev, |
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1402
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|
561 this->hidden->ev, |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
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|
562 output, left_gain, right_gain); |
0 | 563 } |
564 | |
1895
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Sam Lantinga <slouken@libsdl.org>
parents:
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|
565 /* vi: set ts=4 sw=4 expandtab: */ |