| 1 | /* |
| 2 | SDL - Simple DirectMedia Layer |
| 3 | Copyright (C) 1997-2009 Sam Lantinga |
| 4 | |
| 5 | This library is free software; you can redistribute it and/or |
| 6 | modify it under the terms of the GNU Lesser General Public |
| 7 | License as published by the Free Software Foundation; either |
| 8 | version 2.1 of the License, or (at your option) any later version. |
| 9 | |
| 10 | This library is distributed in the hope that it will be useful, |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 13 | Lesser General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU Lesser General Public |
| 16 | License along with this library; if not, write to the Free Software |
| 17 | Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 18 | |
| 19 | Carsten Griwodz |
| 20 | griff@kom.tu-darmstadt.de |
| 21 | |
| 22 | based on linux/SDL_dspaudio.c by Sam Lantinga |
| 23 | */ |
| 24 | #include "SDL_config.h" |
| 25 | |
| 26 | /* Allow access to a raw mixing buffer */ |
| 27 | |
| 28 | #include <errno.h> |
| 29 | #include <unistd.h> |
| 30 | #include <fcntl.h> |
| 31 | #include <sys/types.h> |
| 32 | #include <sys/time.h> |
| 33 | #include <sys/ioctl.h> |
| 34 | #include <sys/stat.h> |
| 35 | #include <sys/mman.h> |
| 36 | |
| 37 | #include "SDL_audio.h" |
| 38 | #include "../SDL_audio_c.h" |
| 39 | #include "../SDL_audiodev_c.h" |
| 40 | #include "SDL_umsaudio.h" |
| 41 | |
| 42 | /* The tag name used by UMS audio */ |
| 43 | #define UMS_DRIVER_NAME "ums" |
| 44 | |
| 45 | #define DEBUG_AUDIO 1 |
| 46 | |
| 47 | /* Audio driver functions */ |
| 48 | static int UMS_OpenAudio(_THIS, SDL_AudioSpec *spec); |
| 49 | static void UMS_PlayAudio(_THIS); |
| 50 | static Uint8 *UMS_GetAudioBuf(_THIS); |
| 51 | static void UMS_CloseAudio(_THIS); |
| 52 | |
| 53 | static UMSAudioDevice_ReturnCode UADOpen(_THIS, string device, string mode, long flags); |
| 54 | static UMSAudioDevice_ReturnCode UADClose(_THIS); |
| 55 | static UMSAudioDevice_ReturnCode UADGetBitsPerSample(_THIS, long* bits); |
| 56 | static UMSAudioDevice_ReturnCode UADSetBitsPerSample(_THIS, long bits); |
| 57 | static UMSAudioDevice_ReturnCode UADSetSampleRate(_THIS, long rate, long* set_rate); |
| 58 | static UMSAudioDevice_ReturnCode UADSetByteOrder(_THIS, string byte_order); |
| 59 | static UMSAudioDevice_ReturnCode UADSetAudioFormatType(_THIS, string fmt); |
| 60 | static UMSAudioDevice_ReturnCode UADSetNumberFormat(_THIS, string fmt); |
| 61 | static UMSAudioDevice_ReturnCode UADInitialize(_THIS); |
| 62 | static UMSAudioDevice_ReturnCode UADStart(_THIS); |
| 63 | static UMSAudioDevice_ReturnCode UADStop(_THIS); |
| 64 | static UMSAudioDevice_ReturnCode UADSetTimeFormat(_THIS, UMSAudioTypes_TimeFormat fmt ); |
| 65 | static UMSAudioDevice_ReturnCode UADWriteBuffSize(_THIS, long* buff_size ); |
| 66 | static UMSAudioDevice_ReturnCode UADWriteBuffRemain(_THIS, long* buff_size ); |
| 67 | static UMSAudioDevice_ReturnCode UADWriteBuffUsed(_THIS, long* buff_size ); |
| 68 | static UMSAudioDevice_ReturnCode UADSetDMABufferSize(_THIS, long bytes, long* bytes_ret ); |
| 69 | static UMSAudioDevice_ReturnCode UADSetVolume(_THIS, long volume ); |
| 70 | static UMSAudioDevice_ReturnCode UADSetBalance(_THIS, long balance ); |
| 71 | static UMSAudioDevice_ReturnCode UADSetChannels(_THIS, long channels ); |
| 72 | static UMSAudioDevice_ReturnCode UADPlayRemainingData(_THIS, boolean block ); |
| 73 | static UMSAudioDevice_ReturnCode UADEnableOutput(_THIS, string output, long* left_gain, long* right_gain); |
| 74 | static UMSAudioDevice_ReturnCode UADWrite(_THIS, UMSAudioTypes_Buffer* buff, long samples, long* samples_written); |
| 75 | |
| 76 | /* Audio driver bootstrap functions */ |
| 77 | static int Audio_Available(void) |
| 78 | { |
| 79 | return 1; |
| 80 | } |
| 81 | |
| 82 | static void Audio_DeleteDevice(_THIS) |
| 83 | { |
| 84 | if(this->hidden->playbuf._buffer) SDL_free(this->hidden->playbuf._buffer); |
| 85 | if(this->hidden->fillbuf._buffer) SDL_free(this->hidden->fillbuf._buffer); |
| 86 | _somFree( this->hidden->umsdev ); |
| 87 | SDL_free(this->hidden); |
| 88 | SDL_free(this); |
| 89 | } |
| 90 | |
| 91 | static SDL_AudioDevice *Audio_CreateDevice(int devindex) |
| 92 | { |
| 93 | SDL_AudioDevice *this; |
| 94 | |
| 95 | /* |
| 96 | * Allocate and initialize management storage and private management |
| 97 | * storage for this SDL-using library. |
| 98 | */ |
| 99 | this = (SDL_AudioDevice *)SDL_malloc(sizeof(SDL_AudioDevice)); |
| 100 | if ( this ) { |
| 101 | SDL_memset(this, 0, (sizeof *this)); |
| 102 | this->hidden = (struct SDL_PrivateAudioData *)SDL_malloc((sizeof *this->hidden)); |
| 103 | } |
| 104 | if ( (this == NULL) || (this->hidden == NULL) ) { |
| 105 | SDL_OutOfMemory(); |
| 106 | if ( this ) { |
| 107 | SDL_free(this); |
| 108 | } |
| 109 | return(0); |
| 110 | } |
| 111 | SDL_memset(this->hidden, 0, (sizeof *this->hidden)); |
| 112 | #ifdef DEBUG_AUDIO |
| 113 | fprintf(stderr, "Creating UMS Audio device\n"); |
| 114 | #endif |
| 115 | |
| 116 | /* |
| 117 | * Calls for UMS env initialization and audio object construction. |
| 118 | */ |
| 119 | this->hidden->ev = somGetGlobalEnvironment(); |
| 120 | this->hidden->umsdev = UMSAudioDeviceNew(); |
| 121 | |
| 122 | /* |
| 123 | * Set the function pointers. |
| 124 | */ |
| 125 | this->OpenAudio = UMS_OpenAudio; |
| 126 | this->WaitAudio = NULL; /* we do blocking output */ |
| 127 | this->PlayAudio = UMS_PlayAudio; |
| 128 | this->GetAudioBuf = UMS_GetAudioBuf; |
| 129 | this->CloseAudio = UMS_CloseAudio; |
| 130 | this->free = Audio_DeleteDevice; |
| 131 | |
| 132 | #ifdef DEBUG_AUDIO |
| 133 | fprintf(stderr, "done\n"); |
| 134 | #endif |
| 135 | return this; |
| 136 | } |
| 137 | |
| 138 | AudioBootStrap UMS_bootstrap = { |
| 139 | UMS_DRIVER_NAME, "AIX UMS audio", |
| 140 | Audio_Available, Audio_CreateDevice |
| 141 | }; |
| 142 | |
| 143 | static Uint8 *UMS_GetAudioBuf(_THIS) |
| 144 | { |
| 145 | #ifdef DEBUG_AUDIO |
| 146 | fprintf(stderr, "enter UMS_GetAudioBuf\n"); |
| 147 | #endif |
| 148 | return this->hidden->fillbuf._buffer; |
| 149 | /* |
| 150 | long bufSize; |
| 151 | UMSAudioDevice_ReturnCode rc; |
| 152 | |
| 153 | rc = UADSetTimeFormat(this, UMSAudioTypes_Bytes ); |
| 154 | rc = UADWriteBuffSize(this, bufSize ); |
| 155 | */ |
| 156 | } |
| 157 | |
| 158 | static void UMS_CloseAudio(_THIS) |
| 159 | { |
| 160 | UMSAudioDevice_ReturnCode rc; |
| 161 | |
| 162 | #ifdef DEBUG_AUDIO |
| 163 | fprintf(stderr, "enter UMS_CloseAudio\n"); |
| 164 | #endif |
| 165 | rc = UADPlayRemainingData(this, TRUE); |
| 166 | rc = UADStop(this); |
| 167 | rc = UADClose(this); |
| 168 | } |
| 169 | |
| 170 | static void UMS_PlayAudio(_THIS) |
| 171 | { |
| 172 | UMSAudioDevice_ReturnCode rc; |
| 173 | long samplesToWrite; |
| 174 | long samplesWritten; |
| 175 | UMSAudioTypes_Buffer swpbuf; |
| 176 | |
| 177 | #ifdef DEBUG_AUDIO |
| 178 | fprintf(stderr, "enter UMS_PlayAudio\n"); |
| 179 | #endif |
| 180 | samplesToWrite = this->hidden->playbuf._length/this->hidden->bytesPerSample; |
| 181 | do |
| 182 | { |
| 183 | rc = UADWrite(this, &this->hidden->playbuf, |
| 184 | samplesToWrite, |
| 185 | &samplesWritten ); |
| 186 | samplesToWrite -= samplesWritten; |
| 187 | |
| 188 | /* rc values: UMSAudioDevice_Success |
| 189 | * UMSAudioDevice_Failure |
| 190 | * UMSAudioDevice_Preempted |
| 191 | * UMSAudioDevice_Interrupted |
| 192 | * UMSAudioDevice_DeviceError |
| 193 | */ |
| 194 | if ( rc == UMSAudioDevice_DeviceError ) { |
| 195 | #ifdef DEBUG_AUDIO |
| 196 | fprintf(stderr, "Returning from PlayAudio with devices error\n"); |
| 197 | #endif |
| 198 | return; |
| 199 | } |
| 200 | } |
| 201 | while(samplesToWrite>0); |
| 202 | |
| 203 | SDL_LockAudio(); |
| 204 | SDL_memcpy( &swpbuf, &this->hidden->playbuf, sizeof(UMSAudioTypes_Buffer) ); |
| 205 | SDL_memcpy( &this->hidden->playbuf, &this->hidden->fillbuf, sizeof(UMSAudioTypes_Buffer) ); |
| 206 | SDL_memcpy( &this->hidden->fillbuf, &swpbuf, sizeof(UMSAudioTypes_Buffer) ); |
| 207 | SDL_UnlockAudio(); |
| 208 | |
| 209 | #ifdef DEBUG_AUDIO |
| 210 | fprintf(stderr, "Wrote audio data and swapped buffer\n"); |
| 211 | #endif |
| 212 | } |
| 213 | |
| 214 | #if 0 |
| 215 | // /* Set the DSP frequency */ |
| 216 | // value = spec->freq; |
| 217 | // if ( ioctl(this->hidden->audio_fd, SOUND_PCM_WRITE_RATE, &value) < 0 ) { |
| 218 | // SDL_SetError("Couldn't set audio frequency"); |
| 219 | // return(-1); |
| 220 | // } |
| 221 | // spec->freq = value; |
| 222 | #endif |
| 223 | |
| 224 | static int UMS_OpenAudio(_THIS, SDL_AudioSpec *spec) |
| 225 | { |
| 226 | char* audiodev = "/dev/paud0"; |
| 227 | long lgain; |
| 228 | long rgain; |
| 229 | long outRate; |
| 230 | long outBufSize; |
| 231 | long bitsPerSample; |
| 232 | long samplesPerSec; |
| 233 | long success; |
| 234 | Uint16 test_format; |
| 235 | int frag_spec; |
| 236 | UMSAudioDevice_ReturnCode rc; |
| 237 | |
| 238 | #ifdef DEBUG_AUDIO |
| 239 | fprintf(stderr, "enter UMS_OpenAudio\n"); |
| 240 | #endif |
| 241 | rc = UADOpen(this, audiodev,"PLAY", UMSAudioDevice_BlockingIO); |
| 242 | if ( rc != UMSAudioDevice_Success ) { |
| 243 | SDL_SetError("Couldn't open %s: %s", audiodev, strerror(errno)); |
| 244 | return -1; |
| 245 | } |
| 246 | |
| 247 | rc = UADSetAudioFormatType(this, "PCM"); |
| 248 | |
| 249 | success = 0; |
| 250 | test_format = SDL_FirstAudioFormat(spec->format); |
| 251 | do |
| 252 | { |
| 253 | #ifdef DEBUG_AUDIO |
| 254 | fprintf(stderr, "Trying format 0x%4.4x\n", test_format); |
| 255 | #endif |
| 256 | switch ( test_format ) |
| 257 | { |
| 258 | case AUDIO_U8: |
| 259 | /* from the mac code: better ? */ |
| 260 | /* sample_bits = spec->size / spec->samples / spec->channels * 8; */ |
| 261 | success = 1; |
| 262 | bitsPerSample = 8; |
| 263 | rc = UADSetSampleRate(this, spec->freq << 16, &outRate ); |
| 264 | rc = UADSetByteOrder(this, "MSB"); /* irrelevant */ |
| 265 | rc = UADSetNumberFormat(this, "UNSIGNED"); |
| 266 | break; |
| 267 | case AUDIO_S8: |
| 268 | success = 1; |
| 269 | bitsPerSample = 8; |
| 270 | rc = UADSetSampleRate(this, spec->freq << 16, &outRate ); |
| 271 | rc = UADSetByteOrder(this, "MSB"); /* irrelevant */ |
| 272 | rc = UADSetNumberFormat(this, "SIGNED"); |
| 273 | break; |
| 274 | case AUDIO_S16LSB: |
| 275 | success = 1; |
| 276 | bitsPerSample = 16; |
| 277 | rc = UADSetSampleRate(this, spec->freq << 16, &outRate ); |
| 278 | rc = UADSetByteOrder(this, "LSB"); |
| 279 | rc = UADSetNumberFormat(this, "SIGNED"); |
| 280 | break; |
| 281 | case AUDIO_S16MSB: |
| 282 | success = 1; |
| 283 | bitsPerSample = 16; |
| 284 | rc = UADSetSampleRate(this, spec->freq << 16, &outRate ); |
| 285 | rc = UADSetByteOrder(this, "MSB"); |
| 286 | rc = UADSetNumberFormat(this, "SIGNED"); |
| 287 | break; |
| 288 | case AUDIO_U16LSB: |
| 289 | success = 1; |
| 290 | bitsPerSample = 16; |
| 291 | rc = UADSetSampleRate(this, spec->freq << 16, &outRate ); |
| 292 | rc = UADSetByteOrder(this, "LSB"); |
| 293 | rc = UADSetNumberFormat(this, "UNSIGNED"); |
| 294 | break; |
| 295 | case AUDIO_U16MSB: |
| 296 | success = 1; |
| 297 | bitsPerSample = 16; |
| 298 | rc = UADSetSampleRate(this, spec->freq << 16, &outRate ); |
| 299 | rc = UADSetByteOrder(this, "MSB"); |
| 300 | rc = UADSetNumberFormat(this, "UNSIGNED"); |
| 301 | break; |
| 302 | default: |
| 303 | break; |
| 304 | } |
| 305 | if ( ! success ) { |
| 306 | test_format = SDL_NextAudioFormat(); |
| 307 | } |
| 308 | } |
| 309 | while ( ! success && test_format ); |
| 310 | |
| 311 | if ( success == 0 ) { |
| 312 | SDL_SetError("Couldn't find any hardware audio formats"); |
| 313 | return -1; |
| 314 | } |
| 315 | |
| 316 | spec->format = test_format; |
| 317 | |
| 318 | for ( frag_spec = 0; (0x01<<frag_spec) < spec->size; ++frag_spec ); |
| 319 | if ( (0x01<<frag_spec) != spec->size ) { |
| 320 | SDL_SetError("Fragment size must be a power of two"); |
| 321 | return -1; |
| 322 | } |
| 323 | if ( frag_spec > 2048 ) frag_spec = 2048; |
| 324 | |
| 325 | this->hidden->bytesPerSample = (bitsPerSample / 8) * spec->channels; |
| 326 | samplesPerSec = this->hidden->bytesPerSample * outRate; |
| 327 | |
| 328 | this->hidden->playbuf._length = 0; |
| 329 | this->hidden->playbuf._maximum = spec->size; |
| 330 | this->hidden->playbuf._buffer = (unsigned char*)SDL_malloc(spec->size); |
| 331 | this->hidden->fillbuf._length = 0; |
| 332 | this->hidden->fillbuf._maximum = spec->size; |
| 333 | this->hidden->fillbuf._buffer = (unsigned char*)SDL_malloc(spec->size); |
| 334 | |
| 335 | rc = UADSetBitsPerSample(this, bitsPerSample ); |
| 336 | rc = UADSetDMABufferSize(this, frag_spec, &outBufSize ); |
| 337 | rc = UADSetChannels(this, spec->channels); /* functions reduces to mono or stereo */ |
| 338 | |
| 339 | lgain = 100; /*maximum left input gain*/ |
| 340 | rgain = 100; /*maimum right input gain*/ |
| 341 | rc = UADEnableOutput(this, "LINE_OUT",&lgain,&rgain); |
| 342 | rc = UADInitialize(this); |
| 343 | rc = UADStart(this); |
| 344 | rc = UADSetVolume(this, 100); |
| 345 | rc = UADSetBalance(this, 0); |
| 346 | |
| 347 | /* We're ready to rock and roll. :-) */ |
| 348 | return 0; |
| 349 | } |
| 350 | |
| 351 | \f |
| 352 | static UMSAudioDevice_ReturnCode UADGetBitsPerSample(_THIS, long* bits) |
| 353 | { |
| 354 | return UMSAudioDevice_get_bits_per_sample( this->hidden->umsdev, |
| 355 | this->hidden->ev, |
| 356 | bits ); |
| 357 | } |
| 358 | |
| 359 | static UMSAudioDevice_ReturnCode UADSetBitsPerSample(_THIS, long bits) |
| 360 | { |
| 361 | return UMSAudioDevice_set_bits_per_sample( this->hidden->umsdev, |
| 362 | this->hidden->ev, |
| 363 | bits ); |
| 364 | } |
| 365 | |
| 366 | static UMSAudioDevice_ReturnCode UADSetSampleRate(_THIS, long rate, long* set_rate) |
| 367 | { |
| 368 | /* from the mac code: sample rate = spec->freq << 16; */ |
| 369 | return UMSAudioDevice_set_sample_rate( this->hidden->umsdev, |
| 370 | this->hidden->ev, |
| 371 | rate, |
| 372 | set_rate ); |
| 373 | } |
| 374 | |
| 375 | static UMSAudioDevice_ReturnCode UADSetByteOrder(_THIS, string byte_order) |
| 376 | { |
| 377 | return UMSAudioDevice_set_byte_order( this->hidden->umsdev, |
| 378 | this->hidden->ev, |
| 379 | byte_order ); |
| 380 | } |
| 381 | |
| 382 | static UMSAudioDevice_ReturnCode UADSetAudioFormatType(_THIS, string fmt) |
| 383 | { |
| 384 | /* possible PCM, A_LAW or MU_LAW */ |
| 385 | return UMSAudioDevice_set_audio_format_type( this->hidden->umsdev, |
| 386 | this->hidden->ev, |
| 387 | fmt ); |
| 388 | } |
| 389 | |
| 390 | static UMSAudioDevice_ReturnCode UADSetNumberFormat(_THIS, string fmt) |
| 391 | { |
| 392 | /* possible SIGNED, UNSIGNED, or TWOS_COMPLEMENT */ |
| 393 | return UMSAudioDevice_set_number_format( this->hidden->umsdev, |
| 394 | this->hidden->ev, |
| 395 | fmt ); |
| 396 | } |
| 397 | |
| 398 | static UMSAudioDevice_ReturnCode UADInitialize(_THIS) |
| 399 | { |
| 400 | return UMSAudioDevice_initialize( this->hidden->umsdev, |
| 401 | this->hidden->ev ); |
| 402 | } |
| 403 | |
| 404 | static UMSAudioDevice_ReturnCode UADStart(_THIS) |
| 405 | { |
| 406 | return UMSAudioDevice_start( this->hidden->umsdev, |
| 407 | this->hidden->ev ); |
| 408 | } |
| 409 | |
| 410 | static UMSAudioDevice_ReturnCode UADSetTimeFormat(_THIS, UMSAudioTypes_TimeFormat fmt ) |
| 411 | { |
| 412 | /* |
| 413 | * Switches the time format to the new format, immediately. |
| 414 | * possible UMSAudioTypes_Msecs, UMSAudioTypes_Bytes or UMSAudioTypes_Samples |
| 415 | */ |
| 416 | return UMSAudioDevice_set_time_format( this->hidden->umsdev, |
| 417 | this->hidden->ev, |
| 418 | fmt ); |
| 419 | } |
| 420 | |
| 421 | static UMSAudioDevice_ReturnCode UADWriteBuffSize(_THIS, long* buff_size ) |
| 422 | { |
| 423 | /* |
| 424 | * returns write buffer size in the current time format |
| 425 | */ |
| 426 | return UMSAudioDevice_write_buff_size( this->hidden->umsdev, |
| 427 | this->hidden->ev, |
| 428 | buff_size ); |
| 429 | } |
| 430 | |
| 431 | static UMSAudioDevice_ReturnCode UADWriteBuffRemain(_THIS, long* buff_size ) |
| 432 | { |
| 433 | /* |
| 434 | * returns amount of available space in the write buffer |
| 435 | * in the current time format |
| 436 | */ |
| 437 | return UMSAudioDevice_write_buff_remain( this->hidden->umsdev, |
| 438 | this->hidden->ev, |
| 439 | buff_size ); |
| 440 | } |
| 441 | |
| 442 | static UMSAudioDevice_ReturnCode UADWriteBuffUsed(_THIS, long* buff_size ) |
| 443 | { |
| 444 | /* |
| 445 | * returns amount of filled space in the write buffer |
| 446 | * in the current time format |
| 447 | */ |
| 448 | return UMSAudioDevice_write_buff_used( this->hidden->umsdev, |
| 449 | this->hidden->ev, |
| 450 | buff_size ); |
| 451 | } |
| 452 | |
| 453 | static UMSAudioDevice_ReturnCode UADSetDMABufferSize(_THIS, long bytes, long* bytes_ret ) |
| 454 | { |
| 455 | /* |
| 456 | * Request a new DMA buffer size, maximum requested size 2048. |
| 457 | * Takes effect with next initialize() call. |
| 458 | * Devices may or may not support DMA. |
| 459 | */ |
| 460 | return UMSAudioDevice_set_DMA_buffer_size( this->hidden->umsdev, |
| 461 | this->hidden->ev, |
| 462 | bytes, |
| 463 | bytes_ret ); |
| 464 | } |
| 465 | |
| 466 | static UMSAudioDevice_ReturnCode UADSetVolume(_THIS, long volume ) |
| 467 | { |
| 468 | /* |
| 469 | * Set the volume. |
| 470 | * Takes effect immediately. |
| 471 | */ |
| 472 | return UMSAudioDevice_set_volume( this->hidden->umsdev, |
| 473 | this->hidden->ev, |
| 474 | volume ); |
| 475 | } |
| 476 | |
| 477 | static UMSAudioDevice_ReturnCode UADSetBalance(_THIS, long balance ) |
| 478 | { |
| 479 | /* |
| 480 | * Set the balance. |
| 481 | * Takes effect immediately. |
| 482 | */ |
| 483 | return UMSAudioDevice_set_balance( this->hidden->umsdev, |
| 484 | this->hidden->ev, |
| 485 | balance ); |
| 486 | } |
| 487 | |
| 488 | static UMSAudioDevice_ReturnCode UADSetChannels(_THIS, long channels ) |
| 489 | { |
| 490 | /* |
| 491 | * Set mono or stereo. |
| 492 | * Takes effect with next initialize() call. |
| 493 | */ |
| 494 | if ( channels != 1 ) channels = 2; |
| 495 | return UMSAudioDevice_set_number_of_channels( this->hidden->umsdev, |
| 496 | this->hidden->ev, |
| 497 | channels ); |
| 498 | } |
| 499 | |
| 500 | static UMSAudioDevice_ReturnCode UADOpen(_THIS, string device, string mode, long flags) |
| 501 | { |
| 502 | return UMSAudioDevice_open( this->hidden->umsdev, |
| 503 | this->hidden->ev, |
| 504 | device, |
| 505 | mode, |
| 506 | flags ); |
| 507 | } |
| 508 | |
| 509 | static UMSAudioDevice_ReturnCode UADWrite(_THIS, UMSAudioTypes_Buffer* buff, |
| 510 | long samples, |
| 511 | long* samples_written) |
| 512 | { |
| 513 | return UMSAudioDevice_write( this->hidden->umsdev, |
| 514 | this->hidden->ev, |
| 515 | buff, |
| 516 | samples, |
| 517 | samples_written ); |
| 518 | } |
| 519 | |
| 520 | static UMSAudioDevice_ReturnCode UADPlayRemainingData(_THIS, boolean block ) |
| 521 | { |
| 522 | return UMSAudioDevice_play_remaining_data( this->hidden->umsdev, |
| 523 | this->hidden->ev, |
| 524 | block); |
| 525 | } |
| 526 | |
| 527 | static UMSAudioDevice_ReturnCode UADStop(_THIS) |
| 528 | { |
| 529 | return UMSAudioDevice_stop( this->hidden->umsdev, |
| 530 | this->hidden->ev ); |
| 531 | } |
| 532 | |
| 533 | static UMSAudioDevice_ReturnCode UADClose(_THIS) |
| 534 | { |
| 535 | return UMSAudioDevice_close( this->hidden->umsdev, |
| 536 | this->hidden->ev ); |
| 537 | } |
| 538 | |
| 539 | static UMSAudioDevice_ReturnCode UADEnableOutput(_THIS, string output, long* left_gain, long* right_gain) |
| 540 | { |
| 541 | return UMSAudioDevice_enable_output( this->hidden->umsdev, |
| 542 | this->hidden->ev, |
| 543 | output, |
| 544 | left_gain, |
| 545 | right_gain ); |
| 546 | } |
| 547 | |