Mercurial > sdl-ios-xcode
annotate src/audio/ums/SDL_umsaudio.c @ 2938:2929ed239d2a
Adjusted default choice of audio driver.
If a driver can definitely see available devices, it is chosen. Otherwise,
we'll take the first driver that initializes but saw no devices...this might
be because it can't enumerate them, or there really aren't any available.
This prevents the dsp driver from hogging control when there are no /dev/dsp*
nodes (for example, on a Linux box with ALSA and no OSS emulation).
author | Ryan C. Gordon <icculus@icculus.org> |
---|---|
date | Thu, 01 Jan 2009 07:54:58 +0000 |
parents | 99210400e8b9 |
children | f7b03b6838cb |
rev | line source |
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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 |
2859 | 8 Copyright (C) 1997-2009 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 } |
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221 } while (samplesToWrite > 0); |
0 | 222 |
223 SDL_LockAudio(); | |
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224 SDL_memcpy(&swpbuf, &this->hidden->playbuf, sizeof(UMSAudioTypes_Buffer)); |
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225 SDL_memcpy(&this->hidden->playbuf, &this->hidden->fillbuf, |
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226 sizeof(UMSAudioTypes_Buffer)); |
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227 SDL_memcpy(&this->hidden->fillbuf, &swpbuf, sizeof(UMSAudioTypes_Buffer)); |
0 | 228 SDL_UnlockAudio(); |
229 | |
230 #ifdef DEBUG_AUDIO | |
231 fprintf(stderr, "Wrote audio data and swapped buffer\n"); | |
232 #endif | |
233 } | |
234 | |
235 #if 0 | |
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236 // /* Set the DSP frequency */ |
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237 // value = spec->freq; |
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238 // if ( ioctl(this->hidden->audio_fd, SOUND_PCM_WRITE_RATE, &value) < 0 ) { |
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239 // SDL_SetError("Couldn't set audio frequency"); |
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240 // return(-1); |
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241 // } |
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242 // spec->freq = value; |
0 | 243 #endif |
244 | |
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245 static int |
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246 UMS_OpenAudio(_THIS, SDL_AudioSpec * spec) |
0 | 247 { |
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248 char *audiodev = "/dev/paud0"; |
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249 long lgain; |
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250 long rgain; |
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251 long outRate; |
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252 long outBufSize; |
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253 long bitsPerSample; |
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254 long samplesPerSec; |
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255 long success; |
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256 SDL_AudioFormat test_format; |
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257 int frag_spec; |
0 | 258 UMSAudioDevice_ReturnCode rc; |
259 | |
260 #ifdef DEBUG_AUDIO | |
261 fprintf(stderr, "enter UMS_OpenAudio\n"); | |
262 #endif | |
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263 rc = UADOpen(this, audiodev, "PLAY", UMSAudioDevice_BlockingIO); |
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264 if (rc != UMSAudioDevice_Success) { |
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265 SDL_SetError("Couldn't open %s: %s", audiodev, strerror(errno)); |
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266 return -1; |
0 | 267 } |
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268 |
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269 rc = UADSetAudioFormatType(this, "PCM"); |
0 | 270 |
271 success = 0; | |
272 test_format = SDL_FirstAudioFormat(spec->format); | |
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273 do { |
0 | 274 #ifdef DEBUG_AUDIO |
275 fprintf(stderr, "Trying format 0x%4.4x\n", test_format); | |
276 #endif | |
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277 switch (test_format) { |
0 | 278 case AUDIO_U8: |
279 /* from the mac code: better ? */ | |
280 /* sample_bits = spec->size / spec->samples / spec->channels * 8; */ | |
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281 success = 1; |
0 | 282 bitsPerSample = 8; |
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283 rc = UADSetSampleRate(this, spec->freq << 16, &outRate); |
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284 rc = UADSetByteOrder(this, "MSB"); /* irrelevant */ |
0 | 285 rc = UADSetNumberFormat(this, "UNSIGNED"); |
286 break; | |
287 case AUDIO_S8: | |
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288 success = 1; |
0 | 289 bitsPerSample = 8; |
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290 rc = UADSetSampleRate(this, spec->freq << 16, &outRate); |
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291 rc = UADSetByteOrder(this, "MSB"); /* irrelevant */ |
0 | 292 rc = UADSetNumberFormat(this, "SIGNED"); |
293 break; | |
294 case AUDIO_S16LSB: | |
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295 success = 1; |
0 | 296 bitsPerSample = 16; |
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297 rc = UADSetSampleRate(this, spec->freq << 16, &outRate); |
0 | 298 rc = UADSetByteOrder(this, "LSB"); |
299 rc = UADSetNumberFormat(this, "SIGNED"); | |
300 break; | |
301 case AUDIO_S16MSB: | |
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302 success = 1; |
0 | 303 bitsPerSample = 16; |
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304 rc = UADSetSampleRate(this, spec->freq << 16, &outRate); |
0 | 305 rc = UADSetByteOrder(this, "MSB"); |
306 rc = UADSetNumberFormat(this, "SIGNED"); | |
307 break; | |
308 case AUDIO_U16LSB: | |
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309 success = 1; |
0 | 310 bitsPerSample = 16; |
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311 rc = UADSetSampleRate(this, spec->freq << 16, &outRate); |
0 | 312 rc = UADSetByteOrder(this, "LSB"); |
313 rc = UADSetNumberFormat(this, "UNSIGNED"); | |
314 break; | |
315 case AUDIO_U16MSB: | |
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316 success = 1; |
0 | 317 bitsPerSample = 16; |
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318 rc = UADSetSampleRate(this, spec->freq << 16, &outRate); |
0 | 319 rc = UADSetByteOrder(this, "MSB"); |
320 rc = UADSetNumberFormat(this, "UNSIGNED"); | |
321 break; | |
322 default: | |
323 break; | |
324 } | |
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325 if (!success) { |
0 | 326 test_format = SDL_NextAudioFormat(); |
327 } | |
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328 } while (!success && test_format); |
0 | 329 |
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330 if (success == 0) { |
0 | 331 SDL_SetError("Couldn't find any hardware audio formats"); |
332 return -1; | |
333 } | |
334 | |
335 spec->format = test_format; | |
336 | |
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337 for (frag_spec = 0; (0x01 << frag_spec) < spec->size; ++frag_spec); |
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338 if ((0x01 << frag_spec) != spec->size) { |
0 | 339 SDL_SetError("Fragment size must be a power of two"); |
340 return -1; | |
341 } | |
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342 if (frag_spec > 2048) |
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343 frag_spec = 2048; |
0 | 344 |
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345 this->hidden->bytesPerSample = (bitsPerSample / 8) * spec->channels; |
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346 samplesPerSec = this->hidden->bytesPerSample * outRate; |
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347 |
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348 this->hidden->playbuf._length = 0; |
0 | 349 this->hidden->playbuf._maximum = spec->size; |
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350 this->hidden->playbuf._buffer = (unsigned char *) SDL_malloc(spec->size); |
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351 this->hidden->fillbuf._length = 0; |
0 | 352 this->hidden->fillbuf._maximum = spec->size; |
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353 this->hidden->fillbuf._buffer = (unsigned char *) SDL_malloc(spec->size); |
0 | 354 |
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355 rc = UADSetBitsPerSample(this, bitsPerSample); |
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356 rc = UADSetDMABufferSize(this, frag_spec, &outBufSize); |
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357 rc = UADSetChannels(this, spec->channels); /* functions reduces to mono or stereo */ |
0 | 358 |
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359 lgain = 100; /*maximum left input gain */ |
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360 rgain = 100; /*maimum right input gain */ |
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361 rc = UADEnableOutput(this, "LINE_OUT", &lgain, &rgain); |
0 | 362 rc = UADInitialize(this); |
363 rc = UADStart(this); | |
364 rc = UADSetVolume(this, 100); | |
365 rc = UADSetBalance(this, 0); | |
366 | |
367 /* We're ready to rock and roll. :-) */ | |
368 return 0; | |
369 } | |
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370 |
0 | 371 |
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372 static UMSAudioDevice_ReturnCode |
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373 UADGetBitsPerSample(_THIS, long *bits) |
0 | 374 { |
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375 return UMSAudioDevice_get_bits_per_sample(this->hidden->umsdev, |
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376 this->hidden->ev, bits); |
0 | 377 } |
378 | |
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379 static UMSAudioDevice_ReturnCode |
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380 UADSetBitsPerSample(_THIS, long bits) |
0 | 381 { |
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382 return UMSAudioDevice_set_bits_per_sample(this->hidden->umsdev, |
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383 this->hidden->ev, bits); |
0 | 384 } |
385 | |
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386 static UMSAudioDevice_ReturnCode |
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387 UADSetSampleRate(_THIS, long rate, long *set_rate) |
0 | 388 { |
389 /* from the mac code: sample rate = spec->freq << 16; */ | |
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390 return UMSAudioDevice_set_sample_rate(this->hidden->umsdev, |
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391 this->hidden->ev, rate, set_rate); |
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392 } |
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393 |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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394 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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395 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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396 { |
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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 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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398 this->hidden->ev, byte_order); |
0 | 399 } |
400 | |
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401 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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402 UADSetAudioFormatType(_THIS, string fmt) |
0 | 403 { |
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404 /* 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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405 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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406 this->hidden->ev, fmt); |
0 | 407 } |
408 | |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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409 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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410 UADSetNumberFormat(_THIS, string fmt) |
0 | 411 { |
412 /* possible SIGNED, UNSIGNED, or TWOS_COMPLEMENT */ | |
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413 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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414 this->hidden->ev, fmt); |
0 | 415 } |
416 | |
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417 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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418 UADInitialize(_THIS) |
0 | 419 { |
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420 return UMSAudioDevice_initialize(this->hidden->umsdev, this->hidden->ev); |
0 | 421 } |
422 | |
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423 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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424 UADStart(_THIS) |
0 | 425 { |
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426 return UMSAudioDevice_start(this->hidden->umsdev, this->hidden->ev); |
0 | 427 } |
428 | |
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429 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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430 UADSetTimeFormat(_THIS, UMSAudioTypes_TimeFormat fmt) |
0 | 431 { |
432 /* | |
433 * Switches the time format to the new format, immediately. | |
434 * possible UMSAudioTypes_Msecs, UMSAudioTypes_Bytes or UMSAudioTypes_Samples | |
435 */ | |
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436 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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437 this->hidden->ev, fmt); |
0 | 438 } |
439 | |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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440 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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441 UADWriteBuffSize(_THIS, long *buff_size) |
0 | 442 { |
443 /* | |
444 * returns write buffer size in the current time format | |
445 */ | |
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446 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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447 this->hidden->ev, buff_size); |
0 | 448 } |
449 | |
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450 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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451 UADWriteBuffRemain(_THIS, long *buff_size) |
0 | 452 { |
453 /* | |
454 * returns amount of available space in the write buffer | |
455 * in the current time format | |
456 */ | |
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457 return UMSAudioDevice_write_buff_remain(this->hidden->umsdev, |
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458 this->hidden->ev, buff_size); |
0 | 459 } |
460 | |
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461 static UMSAudioDevice_ReturnCode |
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462 UADWriteBuffUsed(_THIS, long *buff_size) |
0 | 463 { |
464 /* | |
465 * returns amount of filled space in the write buffer | |
466 * in the current time format | |
467 */ | |
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468 return UMSAudioDevice_write_buff_used(this->hidden->umsdev, |
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469 this->hidden->ev, buff_size); |
0 | 470 } |
471 | |
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472 static UMSAudioDevice_ReturnCode |
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473 UADSetDMABufferSize(_THIS, long bytes, long *bytes_ret) |
0 | 474 { |
475 /* | |
476 * Request a new DMA buffer size, maximum requested size 2048. | |
477 * Takes effect with next initialize() call. | |
478 * Devices may or may not support DMA. | |
479 */ | |
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480 return UMSAudioDevice_set_DMA_buffer_size(this->hidden->umsdev, |
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481 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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482 bytes, bytes_ret); |
0 | 483 } |
484 | |
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485 static UMSAudioDevice_ReturnCode |
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486 UADSetVolume(_THIS, long volume) |
0 | 487 { |
488 /* | |
489 * Set the volume. | |
490 * Takes effect immediately. | |
491 */ | |
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492 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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493 this->hidden->ev, volume); |
0 | 494 } |
495 | |
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496 static UMSAudioDevice_ReturnCode |
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497 UADSetBalance(_THIS, long balance) |
0 | 498 { |
499 /* | |
500 * Set the balance. | |
501 * Takes effect immediately. | |
502 */ | |
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503 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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504 this->hidden->ev, balance); |
0 | 505 } |
506 | |
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507 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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508 UADSetChannels(_THIS, long channels) |
0 | 509 { |
510 /* | |
511 * Set mono or stereo. | |
512 * Takes effect with next initialize() call. | |
513 */ | |
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514 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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515 channels = 2; |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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516 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>
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517 this->hidden->ev, channels); |
0 | 518 } |
519 | |
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parents:
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|
520 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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521 UADOpen(_THIS, string device, string mode, long flags) |
0 | 522 { |
1895
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523 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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524 this->hidden->ev, device, mode, flags); |
0 | 525 } |
526 | |
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|
527 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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|
528 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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529 long samples, long *samples_written) |
0 | 530 { |
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531 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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532 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>
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|
533 buff, samples, samples_written); |
0 | 534 } |
535 | |
1895
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Sam Lantinga <slouken@libsdl.org>
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|
536 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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|
537 UADPlayRemainingData(_THIS, boolean block) |
0 | 538 { |
1895
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Sam Lantinga <slouken@libsdl.org>
parents:
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539 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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|
540 this->hidden->ev, block); |
0 | 541 } |
542 | |
1895
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Sam Lantinga <slouken@libsdl.org>
parents:
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|
543 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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|
544 UADStop(_THIS) |
0 | 545 { |
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>
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|
546 return UMSAudioDevice_stop(this->hidden->umsdev, this->hidden->ev); |
0 | 547 } |
548 | |
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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parents:
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|
549 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>
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|
550 UADClose(_THIS) |
0 | 551 { |
1895
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Sam Lantinga <slouken@libsdl.org>
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|
552 return UMSAudioDevice_close(this->hidden->umsdev, this->hidden->ev); |
0 | 553 } |
554 | |
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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|
555 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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|
556 UADEnableOutput(_THIS, string output, long *left_gain, long *right_gain) |
0 | 557 { |
1895
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Sam Lantinga <slouken@libsdl.org>
parents:
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diff
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|
558 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>
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|
559 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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|
560 output, left_gain, right_gain); |
0 | 561 } |
562 | |
1895
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Sam Lantinga <slouken@libsdl.org>
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|
563 /* vi: set ts=4 sw=4 expandtab: */ |