The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1 | /* |
| 2 | * QEMU OSS audio driver |
| 3 | * |
| 4 | * Copyright (c) 2003-2005 Vassili Karpov (malc) |
| 5 | * |
| 6 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 7 | * of this software and associated documentation files (the "Software"), to deal |
| 8 | * in the Software without restriction, including without limitation the rights |
| 9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 10 | * copies of the Software, and to permit persons to whom the Software is |
| 11 | * furnished to do so, subject to the following conditions: |
| 12 | * |
| 13 | * The above copyright notice and this permission notice shall be included in |
| 14 | * all copies or substantial portions of the Software. |
| 15 | * |
| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| 22 | * THE SOFTWARE. |
| 23 | */ |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 24 | #include <stdlib.h> |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 25 | #include <sys/mman.h> |
| 26 | #include <sys/types.h> |
| 27 | #include <sys/ioctl.h> |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 28 | #ifdef __OpenBSD__ |
| 29 | #include <soundcard.h> |
| 30 | #else |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 31 | #include <sys/soundcard.h> |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 32 | #endif |
| 33 | #include "qemu-common.h" |
David 'Digit' Turner | e90d665 | 2013-12-14 14:55:12 +0100 | [diff] [blame] | 34 | #include "qemu/host-utils.h" |
David 'Digit' Turner | e7216d8 | 2013-12-15 00:51:13 +0100 | [diff] [blame] | 35 | #include "sysemu/char.h" |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 36 | #include "audio.h" |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 37 | |
| 38 | #define AUDIO_CAP "oss" |
| 39 | #include "audio_int.h" |
| 40 | |
David 'Digit' Turner | 5d0e37b | 2011-01-02 12:58:51 +0100 | [diff] [blame] | 41 | #if defined OSS_GETVERSION && defined SNDCTL_DSP_POLICY |
| 42 | #define USE_DSP_POLICY |
| 43 | #endif |
David 'Digit' Turner | 4e024bb | 2010-09-22 14:19:28 +0200 | [diff] [blame] | 44 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 45 | typedef struct OSSVoiceOut { |
| 46 | HWVoiceOut hw; |
| 47 | void *pcm_buf; |
| 48 | int fd; |
David 'Digit' Turner | 5d0e37b | 2011-01-02 12:58:51 +0100 | [diff] [blame] | 49 | int wpos; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 50 | int nfrags; |
| 51 | int fragsize; |
| 52 | int mmapped; |
David 'Digit' Turner | 5d0e37b | 2011-01-02 12:58:51 +0100 | [diff] [blame] | 53 | int pending; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 54 | } OSSVoiceOut; |
| 55 | |
| 56 | typedef struct OSSVoiceIn { |
| 57 | HWVoiceIn hw; |
| 58 | void *pcm_buf; |
| 59 | int fd; |
| 60 | int nfrags; |
| 61 | int fragsize; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 62 | } OSSVoiceIn; |
| 63 | |
| 64 | static struct { |
| 65 | int try_mmap; |
| 66 | int nfrags; |
| 67 | int fragsize; |
| 68 | const char *devpath_out; |
| 69 | const char *devpath_in; |
| 70 | int debug; |
David 'Digit' Turner | 5d0e37b | 2011-01-02 12:58:51 +0100 | [diff] [blame] | 71 | int exclusive; |
| 72 | int policy; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 73 | } conf = { |
| 74 | .try_mmap = 0, |
| 75 | .nfrags = 4, |
| 76 | .fragsize = 4096, |
| 77 | .devpath_out = "/dev/dsp", |
| 78 | .devpath_in = "/dev/dsp", |
David 'Digit' Turner | 5d0e37b | 2011-01-02 12:58:51 +0100 | [diff] [blame] | 79 | .debug = 0, |
| 80 | .exclusive = 0, |
| 81 | .policy = 5 |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 82 | }; |
| 83 | |
| 84 | struct oss_params { |
| 85 | int freq; |
| 86 | audfmt_e fmt; |
| 87 | int nchannels; |
| 88 | int nfrags; |
| 89 | int fragsize; |
| 90 | }; |
| 91 | |
| 92 | static void GCC_FMT_ATTR (2, 3) oss_logerr (int err, const char *fmt, ...) |
| 93 | { |
| 94 | va_list ap; |
| 95 | |
| 96 | va_start (ap, fmt); |
| 97 | AUD_vlog (AUDIO_CAP, fmt, ap); |
| 98 | va_end (ap); |
| 99 | |
| 100 | AUD_log (AUDIO_CAP, "Reason: %s\n", strerror (err)); |
| 101 | } |
| 102 | |
| 103 | static void GCC_FMT_ATTR (3, 4) oss_logerr2 ( |
| 104 | int err, |
| 105 | const char *typ, |
| 106 | const char *fmt, |
| 107 | ... |
| 108 | ) |
| 109 | { |
| 110 | va_list ap; |
| 111 | |
| 112 | AUD_log (AUDIO_CAP, "Could not initialize %s\n", typ); |
| 113 | |
| 114 | va_start (ap, fmt); |
| 115 | AUD_vlog (AUDIO_CAP, fmt, ap); |
| 116 | va_end (ap); |
| 117 | |
| 118 | AUD_log (AUDIO_CAP, "Reason: %s\n", strerror (err)); |
| 119 | } |
| 120 | |
| 121 | static void oss_anal_close (int *fdp) |
| 122 | { |
David 'Digit' Turner | 5d0e37b | 2011-01-02 12:58:51 +0100 | [diff] [blame] | 123 | int err; |
| 124 | |
| 125 | qemu_set_fd_handler (*fdp, NULL, NULL, NULL); |
| 126 | err = close (*fdp); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 127 | if (err) { |
| 128 | oss_logerr (errno, "Failed to close file(fd=%d)\n", *fdp); |
| 129 | } |
| 130 | *fdp = -1; |
| 131 | } |
| 132 | |
David 'Digit' Turner | 5d0e37b | 2011-01-02 12:58:51 +0100 | [diff] [blame] | 133 | static void oss_helper_poll_out (void *opaque) |
| 134 | { |
| 135 | (void) opaque; |
| 136 | audio_run ("oss_poll_out"); |
| 137 | } |
| 138 | |
| 139 | static void oss_helper_poll_in (void *opaque) |
| 140 | { |
| 141 | (void) opaque; |
| 142 | audio_run ("oss_poll_in"); |
| 143 | } |
| 144 | |
| 145 | static int oss_poll_out (HWVoiceOut *hw) |
| 146 | { |
| 147 | OSSVoiceOut *oss = (OSSVoiceOut *) hw; |
| 148 | |
| 149 | return qemu_set_fd_handler (oss->fd, NULL, oss_helper_poll_out, NULL); |
| 150 | } |
| 151 | |
| 152 | static int oss_poll_in (HWVoiceIn *hw) |
| 153 | { |
| 154 | OSSVoiceIn *oss = (OSSVoiceIn *) hw; |
| 155 | |
| 156 | return qemu_set_fd_handler (oss->fd, oss_helper_poll_in, NULL, NULL); |
| 157 | } |
| 158 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 159 | static int oss_write (SWVoiceOut *sw, void *buf, int len) |
| 160 | { |
| 161 | return audio_pcm_sw_write (sw, buf, len); |
| 162 | } |
| 163 | |
| 164 | static int aud_to_ossfmt (audfmt_e fmt) |
| 165 | { |
| 166 | switch (fmt) { |
| 167 | case AUD_FMT_S8: |
| 168 | return AFMT_S8; |
| 169 | |
| 170 | case AUD_FMT_U8: |
| 171 | return AFMT_U8; |
| 172 | |
| 173 | case AUD_FMT_S16: |
| 174 | return AFMT_S16_LE; |
| 175 | |
| 176 | case AUD_FMT_U16: |
| 177 | return AFMT_U16_LE; |
| 178 | |
| 179 | default: |
| 180 | dolog ("Internal logic error: Bad audio format %d\n", fmt); |
| 181 | #ifdef DEBUG_AUDIO |
| 182 | abort (); |
| 183 | #endif |
| 184 | return AFMT_U8; |
| 185 | } |
| 186 | } |
| 187 | |
| 188 | static int oss_to_audfmt (int ossfmt, audfmt_e *fmt, int *endianness) |
| 189 | { |
| 190 | switch (ossfmt) { |
| 191 | case AFMT_S8: |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 192 | *endianness = 0; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 193 | *fmt = AUD_FMT_S8; |
| 194 | break; |
| 195 | |
| 196 | case AFMT_U8: |
| 197 | *endianness = 0; |
| 198 | *fmt = AUD_FMT_U8; |
| 199 | break; |
| 200 | |
| 201 | case AFMT_S16_LE: |
| 202 | *endianness = 0; |
| 203 | *fmt = AUD_FMT_S16; |
| 204 | break; |
| 205 | |
| 206 | case AFMT_U16_LE: |
| 207 | *endianness = 0; |
| 208 | *fmt = AUD_FMT_U16; |
| 209 | break; |
| 210 | |
| 211 | case AFMT_S16_BE: |
| 212 | *endianness = 1; |
| 213 | *fmt = AUD_FMT_S16; |
| 214 | break; |
| 215 | |
| 216 | case AFMT_U16_BE: |
| 217 | *endianness = 1; |
| 218 | *fmt = AUD_FMT_U16; |
| 219 | break; |
| 220 | |
| 221 | default: |
| 222 | dolog ("Unrecognized audio format %d\n", ossfmt); |
| 223 | return -1; |
| 224 | } |
| 225 | |
| 226 | return 0; |
| 227 | } |
| 228 | |
| 229 | #if defined DEBUG_MISMATCHES || defined DEBUG |
| 230 | static void oss_dump_info (struct oss_params *req, struct oss_params *obt) |
| 231 | { |
| 232 | dolog ("parameter | requested value | obtained value\n"); |
| 233 | dolog ("format | %10d | %10d\n", req->fmt, obt->fmt); |
| 234 | dolog ("channels | %10d | %10d\n", |
| 235 | req->nchannels, obt->nchannels); |
| 236 | dolog ("frequency | %10d | %10d\n", req->freq, obt->freq); |
| 237 | dolog ("nfrags | %10d | %10d\n", req->nfrags, obt->nfrags); |
| 238 | dolog ("fragsize | %10d | %10d\n", |
| 239 | req->fragsize, obt->fragsize); |
| 240 | } |
| 241 | #endif |
| 242 | |
David 'Digit' Turner | 5d0e37b | 2011-01-02 12:58:51 +0100 | [diff] [blame] | 243 | #ifdef USE_DSP_POLICY |
| 244 | static int oss_get_version (int fd, int *version, const char *typ) |
| 245 | { |
| 246 | if (ioctl (fd, OSS_GETVERSION, &version)) { |
| 247 | #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) |
| 248 | /* |
| 249 | * Looks like atm (20100109) FreeBSD knows OSS_GETVERSION |
| 250 | * since 7.x, but currently only on the mixer device (or in |
| 251 | * the Linuxolator), and in the native version that part of |
| 252 | * the code is in fact never reached so the ioctl fails anyway. |
| 253 | * Until this is fixed, just check the errno and if its what |
| 254 | * FreeBSD's sound drivers return atm assume they are new enough. |
| 255 | */ |
| 256 | if (errno == EINVAL) { |
| 257 | *version = 0x040000; |
| 258 | return 0; |
| 259 | } |
| 260 | #endif |
| 261 | oss_logerr2 (errno, typ, "Failed to get OSS version\n"); |
| 262 | return -1; |
| 263 | } |
| 264 | return 0; |
| 265 | } |
| 266 | #endif |
| 267 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 268 | static int oss_open (int in, struct oss_params *req, |
| 269 | struct oss_params *obt, int *pfd) |
| 270 | { |
| 271 | int fd; |
David 'Digit' Turner | 5d0e37b | 2011-01-02 12:58:51 +0100 | [diff] [blame] | 272 | int oflags = conf.exclusive ? O_EXCL : 0; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 273 | audio_buf_info abinfo; |
| 274 | int fmt, freq, nchannels; |
David 'Digit' Turner | 5d0e37b | 2011-01-02 12:58:51 +0100 | [diff] [blame] | 275 | int setfragment = 1; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 276 | const char *dspname = in ? conf.devpath_in : conf.devpath_out; |
| 277 | const char *typ = in ? "ADC" : "DAC"; |
| 278 | |
David 'Digit' Turner | 5d0e37b | 2011-01-02 12:58:51 +0100 | [diff] [blame] | 279 | /* Kludge needed to have working mmap on Linux */ |
| 280 | oflags |= conf.try_mmap ? O_RDWR : (in ? O_RDONLY : O_WRONLY); |
| 281 | |
| 282 | fd = open (dspname, oflags | O_NONBLOCK); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 283 | if (-1 == fd) { |
| 284 | oss_logerr2 (errno, typ, "Failed to open `%s'\n", dspname); |
| 285 | return -1; |
| 286 | } |
| 287 | |
| 288 | freq = req->freq; |
| 289 | nchannels = req->nchannels; |
| 290 | fmt = req->fmt; |
| 291 | |
| 292 | if (ioctl (fd, SNDCTL_DSP_SAMPLESIZE, &fmt)) { |
| 293 | oss_logerr2 (errno, typ, "Failed to set sample size %d\n", req->fmt); |
| 294 | goto err; |
| 295 | } |
| 296 | |
| 297 | if (ioctl (fd, SNDCTL_DSP_CHANNELS, &nchannels)) { |
| 298 | oss_logerr2 (errno, typ, "Failed to set number of channels %d\n", |
| 299 | req->nchannels); |
| 300 | goto err; |
| 301 | } |
| 302 | |
| 303 | if (ioctl (fd, SNDCTL_DSP_SPEED, &freq)) { |
| 304 | oss_logerr2 (errno, typ, "Failed to set frequency %d\n", req->freq); |
| 305 | goto err; |
| 306 | } |
| 307 | |
| 308 | if (ioctl (fd, SNDCTL_DSP_NONBLOCK, NULL)) { |
| 309 | oss_logerr2 (errno, typ, "Failed to set non-blocking mode\n"); |
| 310 | goto err; |
| 311 | } |
| 312 | |
David 'Digit' Turner | 5d0e37b | 2011-01-02 12:58:51 +0100 | [diff] [blame] | 313 | #ifdef USE_DSP_POLICY |
| 314 | if (conf.policy >= 0) { |
| 315 | int version; |
| 316 | |
| 317 | if (!oss_get_version (fd, &version, typ)) { |
| 318 | if (conf.debug) { |
| 319 | dolog ("OSS version = %#x\n", version); |
| 320 | } |
| 321 | |
| 322 | if (version >= 0x040000) { |
| 323 | int policy = conf.policy; |
| 324 | if (ioctl (fd, SNDCTL_DSP_POLICY, &policy)) { |
| 325 | oss_logerr2 (errno, typ, |
| 326 | "Failed to set timing policy to %d\n", |
| 327 | conf.policy); |
| 328 | goto err; |
| 329 | } |
| 330 | setfragment = 0; |
| 331 | } |
| 332 | } |
| 333 | } |
| 334 | #endif |
| 335 | |
| 336 | if (setfragment) { |
| 337 | int mmmmssss = (req->nfrags << 16) | ctz32 (req->fragsize); |
| 338 | if (ioctl (fd, SNDCTL_DSP_SETFRAGMENT, &mmmmssss)) { |
| 339 | oss_logerr2 (errno, typ, "Failed to set buffer length (%d, %d)\n", |
| 340 | req->nfrags, req->fragsize); |
| 341 | goto err; |
| 342 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 343 | } |
| 344 | |
| 345 | if (ioctl (fd, in ? SNDCTL_DSP_GETISPACE : SNDCTL_DSP_GETOSPACE, &abinfo)) { |
| 346 | oss_logerr2 (errno, typ, "Failed to get buffer length\n"); |
| 347 | goto err; |
| 348 | } |
| 349 | |
| 350 | if (!abinfo.fragstotal || !abinfo.fragsize) { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 351 | AUD_log (AUDIO_CAP, "Returned bogus buffer information(%d, %d) for %s\n", |
| 352 | abinfo.fragstotal, abinfo.fragsize, typ); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 353 | goto err; |
| 354 | } |
| 355 | |
| 356 | obt->fmt = fmt; |
| 357 | obt->nchannels = nchannels; |
| 358 | obt->freq = freq; |
| 359 | obt->nfrags = abinfo.fragstotal; |
| 360 | obt->fragsize = abinfo.fragsize; |
| 361 | *pfd = fd; |
| 362 | |
| 363 | #ifdef DEBUG_MISMATCHES |
| 364 | if ((req->fmt != obt->fmt) || |
| 365 | (req->nchannels != obt->nchannels) || |
| 366 | (req->freq != obt->freq) || |
| 367 | (req->fragsize != obt->fragsize) || |
| 368 | (req->nfrags != obt->nfrags)) { |
| 369 | dolog ("Audio parameters mismatch\n"); |
| 370 | oss_dump_info (req, obt); |
| 371 | } |
| 372 | #endif |
| 373 | |
| 374 | #ifdef DEBUG |
| 375 | oss_dump_info (req, obt); |
| 376 | #endif |
| 377 | return 0; |
| 378 | |
| 379 | err: |
| 380 | oss_anal_close (&fd); |
| 381 | return -1; |
| 382 | } |
| 383 | |
David 'Digit' Turner | 5d0e37b | 2011-01-02 12:58:51 +0100 | [diff] [blame] | 384 | static void oss_write_pending (OSSVoiceOut *oss) |
| 385 | { |
| 386 | HWVoiceOut *hw = &oss->hw; |
| 387 | |
| 388 | if (oss->mmapped) { |
| 389 | return; |
| 390 | } |
| 391 | |
| 392 | while (oss->pending) { |
| 393 | int samples_written; |
| 394 | ssize_t bytes_written; |
| 395 | int samples_till_end = hw->samples - oss->wpos; |
| 396 | int samples_to_write = audio_MIN (oss->pending, samples_till_end); |
| 397 | int bytes_to_write = samples_to_write << hw->info.shift; |
| 398 | void *pcm = advance (oss->pcm_buf, oss->wpos << hw->info.shift); |
| 399 | |
| 400 | bytes_written = write (oss->fd, pcm, bytes_to_write); |
| 401 | if (bytes_written < 0) { |
| 402 | if (errno != EAGAIN) { |
| 403 | oss_logerr (errno, "failed to write %d bytes\n", |
| 404 | bytes_to_write); |
| 405 | } |
| 406 | break; |
| 407 | } |
| 408 | |
| 409 | if (bytes_written & hw->info.align) { |
| 410 | dolog ("misaligned write asked for %d, but got %zd\n", |
| 411 | bytes_to_write, bytes_written); |
| 412 | return; |
| 413 | } |
| 414 | |
| 415 | samples_written = bytes_written >> hw->info.shift; |
| 416 | oss->pending -= samples_written; |
| 417 | oss->wpos = (oss->wpos + samples_written) % hw->samples; |
| 418 | if (bytes_written - bytes_to_write) { |
| 419 | break; |
| 420 | } |
| 421 | } |
| 422 | } |
| 423 | |
| 424 | static int oss_run_out (HWVoiceOut *hw, int live) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 425 | { |
| 426 | OSSVoiceOut *oss = (OSSVoiceOut *) hw; |
David 'Digit' Turner | 5d0e37b | 2011-01-02 12:58:51 +0100 | [diff] [blame] | 427 | int err, decr; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 428 | struct audio_buf_info abinfo; |
| 429 | struct count_info cntinfo; |
| 430 | int bufsize; |
| 431 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 432 | bufsize = hw->samples << hw->info.shift; |
| 433 | |
| 434 | if (oss->mmapped) { |
David 'Digit' Turner | 5d0e37b | 2011-01-02 12:58:51 +0100 | [diff] [blame] | 435 | int bytes, pos; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 436 | |
| 437 | err = ioctl (oss->fd, SNDCTL_DSP_GETOPTR, &cntinfo); |
| 438 | if (err < 0) { |
| 439 | oss_logerr (errno, "SNDCTL_DSP_GETOPTR failed\n"); |
| 440 | return 0; |
| 441 | } |
| 442 | |
David 'Digit' Turner | 5d0e37b | 2011-01-02 12:58:51 +0100 | [diff] [blame] | 443 | pos = hw->rpos << hw->info.shift; |
| 444 | bytes = audio_ring_dist (cntinfo.ptr, pos, bufsize); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 445 | decr = audio_MIN (bytes >> hw->info.shift, live); |
| 446 | } |
| 447 | else { |
| 448 | err = ioctl (oss->fd, SNDCTL_DSP_GETOSPACE, &abinfo); |
| 449 | if (err < 0) { |
| 450 | oss_logerr (errno, "SNDCTL_DSP_GETOPTR failed\n"); |
| 451 | return 0; |
| 452 | } |
| 453 | |
| 454 | if (abinfo.bytes > bufsize) { |
| 455 | if (conf.debug) { |
| 456 | dolog ("warning: Invalid available size, size=%d bufsize=%d\n" |
David 'Digit' Turner | 5d0e37b | 2011-01-02 12:58:51 +0100 | [diff] [blame] | 457 | "please report your OS/audio hw to av1474@comtv.ru\n", |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 458 | abinfo.bytes, bufsize); |
| 459 | } |
| 460 | abinfo.bytes = bufsize; |
| 461 | } |
| 462 | |
| 463 | if (abinfo.bytes < 0) { |
| 464 | if (conf.debug) { |
| 465 | dolog ("warning: Invalid available size, size=%d bufsize=%d\n", |
| 466 | abinfo.bytes, bufsize); |
| 467 | } |
| 468 | return 0; |
| 469 | } |
| 470 | |
| 471 | decr = audio_MIN (abinfo.bytes >> hw->info.shift, live); |
| 472 | if (!decr) { |
| 473 | return 0; |
| 474 | } |
| 475 | } |
| 476 | |
David 'Digit' Turner | 5d0e37b | 2011-01-02 12:58:51 +0100 | [diff] [blame] | 477 | decr = audio_pcm_hw_clip_out (hw, oss->pcm_buf, decr, oss->pending); |
| 478 | oss->pending += decr; |
| 479 | oss_write_pending (oss); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 480 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 481 | return decr; |
| 482 | } |
| 483 | |
| 484 | static void oss_fini_out (HWVoiceOut *hw) |
| 485 | { |
| 486 | int err; |
| 487 | OSSVoiceOut *oss = (OSSVoiceOut *) hw; |
| 488 | |
| 489 | ldebug ("oss_fini\n"); |
| 490 | oss_anal_close (&oss->fd); |
| 491 | |
| 492 | if (oss->pcm_buf) { |
| 493 | if (oss->mmapped) { |
| 494 | err = munmap (oss->pcm_buf, hw->samples << hw->info.shift); |
| 495 | if (err) { |
| 496 | oss_logerr (errno, "Failed to unmap buffer %p, size %d\n", |
| 497 | oss->pcm_buf, hw->samples << hw->info.shift); |
| 498 | } |
| 499 | } |
| 500 | else { |
David 'Digit' Turner | aa8236d | 2014-01-10 17:02:29 +0100 | [diff] [blame] | 501 | g_free (oss->pcm_buf); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 502 | } |
| 503 | oss->pcm_buf = NULL; |
| 504 | } |
| 505 | } |
| 506 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 507 | static int oss_init_out (HWVoiceOut *hw, struct audsettings *as) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 508 | { |
| 509 | OSSVoiceOut *oss = (OSSVoiceOut *) hw; |
| 510 | struct oss_params req, obt; |
| 511 | int endianness; |
| 512 | int err; |
| 513 | int fd; |
| 514 | audfmt_e effective_fmt; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 515 | struct audsettings obt_as; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 516 | |
| 517 | oss->fd = -1; |
| 518 | |
| 519 | req.fmt = aud_to_ossfmt (as->fmt); |
| 520 | req.freq = as->freq; |
| 521 | req.nchannels = as->nchannels; |
| 522 | req.fragsize = conf.fragsize; |
| 523 | req.nfrags = conf.nfrags; |
| 524 | |
| 525 | if (oss_open (0, &req, &obt, &fd)) { |
| 526 | return -1; |
| 527 | } |
| 528 | |
| 529 | err = oss_to_audfmt (obt.fmt, &effective_fmt, &endianness); |
| 530 | if (err) { |
| 531 | oss_anal_close (&fd); |
| 532 | return -1; |
| 533 | } |
| 534 | |
| 535 | obt_as.freq = obt.freq; |
| 536 | obt_as.nchannels = obt.nchannels; |
| 537 | obt_as.fmt = effective_fmt; |
| 538 | obt_as.endianness = endianness; |
| 539 | |
| 540 | audio_pcm_init_info (&hw->info, &obt_as); |
| 541 | oss->nfrags = obt.nfrags; |
| 542 | oss->fragsize = obt.fragsize; |
| 543 | |
| 544 | if (obt.nfrags * obt.fragsize & hw->info.align) { |
| 545 | dolog ("warning: Misaligned DAC buffer, size %d, alignment %d\n", |
| 546 | obt.nfrags * obt.fragsize, hw->info.align + 1); |
| 547 | } |
| 548 | |
| 549 | hw->samples = (obt.nfrags * obt.fragsize) >> hw->info.shift; |
| 550 | |
| 551 | oss->mmapped = 0; |
| 552 | if (conf.try_mmap) { |
| 553 | oss->pcm_buf = mmap ( |
David 'Digit' Turner | 5d0e37b | 2011-01-02 12:58:51 +0100 | [diff] [blame] | 554 | NULL, |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 555 | hw->samples << hw->info.shift, |
| 556 | PROT_READ | PROT_WRITE, |
| 557 | MAP_SHARED, |
| 558 | fd, |
| 559 | 0 |
| 560 | ); |
| 561 | if (oss->pcm_buf == MAP_FAILED) { |
| 562 | oss_logerr (errno, "Failed to map %d bytes of DAC\n", |
| 563 | hw->samples << hw->info.shift); |
David 'Digit' Turner | 5d0e37b | 2011-01-02 12:58:51 +0100 | [diff] [blame] | 564 | } |
| 565 | else { |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 566 | int err; |
| 567 | int trig = 0; |
| 568 | if (ioctl (fd, SNDCTL_DSP_SETTRIGGER, &trig) < 0) { |
| 569 | oss_logerr (errno, "SNDCTL_DSP_SETTRIGGER 0 failed\n"); |
| 570 | } |
| 571 | else { |
| 572 | trig = PCM_ENABLE_OUTPUT; |
| 573 | if (ioctl (fd, SNDCTL_DSP_SETTRIGGER, &trig) < 0) { |
| 574 | oss_logerr ( |
| 575 | errno, |
| 576 | "SNDCTL_DSP_SETTRIGGER PCM_ENABLE_OUTPUT failed\n" |
| 577 | ); |
| 578 | } |
| 579 | else { |
| 580 | oss->mmapped = 1; |
| 581 | } |
| 582 | } |
| 583 | |
| 584 | if (!oss->mmapped) { |
| 585 | err = munmap (oss->pcm_buf, hw->samples << hw->info.shift); |
| 586 | if (err) { |
| 587 | oss_logerr (errno, "Failed to unmap buffer %p size %d\n", |
| 588 | oss->pcm_buf, hw->samples << hw->info.shift); |
| 589 | } |
| 590 | } |
| 591 | } |
| 592 | } |
| 593 | |
| 594 | if (!oss->mmapped) { |
| 595 | oss->pcm_buf = audio_calloc ( |
| 596 | AUDIO_FUNC, |
| 597 | hw->samples, |
| 598 | 1 << hw->info.shift |
| 599 | ); |
| 600 | if (!oss->pcm_buf) { |
| 601 | dolog ( |
| 602 | "Could not allocate DAC buffer (%d samples, each %d bytes)\n", |
| 603 | hw->samples, |
| 604 | 1 << hw->info.shift |
| 605 | ); |
| 606 | oss_anal_close (&fd); |
| 607 | return -1; |
| 608 | } |
| 609 | } |
| 610 | |
| 611 | oss->fd = fd; |
| 612 | return 0; |
| 613 | } |
| 614 | |
| 615 | static int oss_ctl_out (HWVoiceOut *hw, int cmd, ...) |
| 616 | { |
| 617 | int trig; |
| 618 | OSSVoiceOut *oss = (OSSVoiceOut *) hw; |
| 619 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 620 | switch (cmd) { |
| 621 | case VOICE_ENABLE: |
David 'Digit' Turner | 5d0e37b | 2011-01-02 12:58:51 +0100 | [diff] [blame] | 622 | { |
| 623 | va_list ap; |
| 624 | int poll_mode; |
| 625 | |
| 626 | va_start (ap, cmd); |
| 627 | poll_mode = va_arg (ap, int); |
| 628 | va_end (ap); |
| 629 | |
| 630 | ldebug ("enabling voice\n"); |
| 631 | if (poll_mode && oss_poll_out (hw)) { |
| 632 | poll_mode = 0; |
| 633 | } |
| 634 | hw->poll_mode = poll_mode; |
| 635 | |
| 636 | if (!oss->mmapped) { |
| 637 | return 0; |
| 638 | } |
| 639 | |
| 640 | audio_pcm_info_clear_buf (&hw->info, oss->pcm_buf, hw->samples); |
| 641 | trig = PCM_ENABLE_OUTPUT; |
| 642 | if (ioctl (oss->fd, SNDCTL_DSP_SETTRIGGER, &trig) < 0) { |
| 643 | oss_logerr ( |
| 644 | errno, |
| 645 | "SNDCTL_DSP_SETTRIGGER PCM_ENABLE_OUTPUT failed\n" |
| 646 | ); |
| 647 | return -1; |
| 648 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 649 | } |
| 650 | break; |
| 651 | |
| 652 | case VOICE_DISABLE: |
David 'Digit' Turner | 5d0e37b | 2011-01-02 12:58:51 +0100 | [diff] [blame] | 653 | if (hw->poll_mode) { |
| 654 | qemu_set_fd_handler (oss->fd, NULL, NULL, NULL); |
| 655 | hw->poll_mode = 0; |
| 656 | } |
| 657 | |
| 658 | if (!oss->mmapped) { |
| 659 | return 0; |
| 660 | } |
| 661 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 662 | ldebug ("disabling voice\n"); |
| 663 | trig = 0; |
| 664 | if (ioctl (oss->fd, SNDCTL_DSP_SETTRIGGER, &trig) < 0) { |
| 665 | oss_logerr (errno, "SNDCTL_DSP_SETTRIGGER 0 failed\n"); |
| 666 | return -1; |
| 667 | } |
| 668 | break; |
| 669 | } |
| 670 | return 0; |
| 671 | } |
| 672 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 673 | static int oss_init_in (HWVoiceIn *hw, struct audsettings *as) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 674 | { |
| 675 | OSSVoiceIn *oss = (OSSVoiceIn *) hw; |
| 676 | struct oss_params req, obt; |
| 677 | int endianness; |
| 678 | int err; |
| 679 | int fd; |
| 680 | audfmt_e effective_fmt; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 681 | struct audsettings obt_as; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 682 | |
| 683 | oss->fd = -1; |
| 684 | |
| 685 | req.fmt = aud_to_ossfmt (as->fmt); |
| 686 | req.freq = as->freq; |
| 687 | req.nchannels = as->nchannels; |
| 688 | req.fragsize = conf.fragsize; |
| 689 | req.nfrags = conf.nfrags; |
| 690 | if (oss_open (1, &req, &obt, &fd)) { |
| 691 | return -1; |
| 692 | } |
| 693 | |
| 694 | err = oss_to_audfmt (obt.fmt, &effective_fmt, &endianness); |
| 695 | if (err) { |
| 696 | oss_anal_close (&fd); |
| 697 | return -1; |
| 698 | } |
| 699 | |
| 700 | obt_as.freq = obt.freq; |
| 701 | obt_as.nchannels = obt.nchannels; |
| 702 | obt_as.fmt = effective_fmt; |
| 703 | obt_as.endianness = endianness; |
| 704 | |
| 705 | audio_pcm_init_info (&hw->info, &obt_as); |
| 706 | oss->nfrags = obt.nfrags; |
| 707 | oss->fragsize = obt.fragsize; |
| 708 | |
| 709 | if (obt.nfrags * obt.fragsize & hw->info.align) { |
| 710 | dolog ("warning: Misaligned ADC buffer, size %d, alignment %d\n", |
| 711 | obt.nfrags * obt.fragsize, hw->info.align + 1); |
| 712 | } |
| 713 | |
| 714 | hw->samples = (obt.nfrags * obt.fragsize) >> hw->info.shift; |
| 715 | oss->pcm_buf = audio_calloc (AUDIO_FUNC, hw->samples, 1 << hw->info.shift); |
| 716 | if (!oss->pcm_buf) { |
| 717 | dolog ("Could not allocate ADC buffer (%d samples, each %d bytes)\n", |
| 718 | hw->samples, 1 << hw->info.shift); |
| 719 | oss_anal_close (&fd); |
| 720 | return -1; |
| 721 | } |
| 722 | |
| 723 | oss->fd = fd; |
| 724 | return 0; |
| 725 | } |
| 726 | |
| 727 | static void oss_fini_in (HWVoiceIn *hw) |
| 728 | { |
| 729 | OSSVoiceIn *oss = (OSSVoiceIn *) hw; |
| 730 | |
| 731 | oss_anal_close (&oss->fd); |
| 732 | |
| 733 | if (oss->pcm_buf) { |
David 'Digit' Turner | aa8236d | 2014-01-10 17:02:29 +0100 | [diff] [blame] | 734 | g_free (oss->pcm_buf); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 735 | oss->pcm_buf = NULL; |
| 736 | } |
| 737 | } |
| 738 | |
| 739 | static int oss_run_in (HWVoiceIn *hw) |
| 740 | { |
| 741 | OSSVoiceIn *oss = (OSSVoiceIn *) hw; |
| 742 | int hwshift = hw->info.shift; |
| 743 | int i; |
| 744 | int live = audio_pcm_hw_get_live_in (hw); |
| 745 | int dead = hw->samples - live; |
| 746 | size_t read_samples = 0; |
| 747 | struct { |
| 748 | int add; |
| 749 | int len; |
| 750 | } bufs[2] = { |
David 'Digit' Turner | 5d0e37b | 2011-01-02 12:58:51 +0100 | [diff] [blame] | 751 | { .add = hw->wpos, .len = 0 }, |
| 752 | { .add = 0, .len = 0 } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 753 | }; |
| 754 | |
| 755 | if (!dead) { |
| 756 | return 0; |
| 757 | } |
| 758 | |
| 759 | if (hw->wpos + dead > hw->samples) { |
| 760 | bufs[0].len = (hw->samples - hw->wpos) << hwshift; |
| 761 | bufs[1].len = (dead - (hw->samples - hw->wpos)) << hwshift; |
| 762 | } |
| 763 | else { |
| 764 | bufs[0].len = dead << hwshift; |
| 765 | } |
| 766 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 767 | for (i = 0; i < 2; ++i) { |
| 768 | ssize_t nread; |
| 769 | |
| 770 | if (bufs[i].len) { |
| 771 | void *p = advance (oss->pcm_buf, bufs[i].add << hwshift); |
| 772 | nread = read (oss->fd, p, bufs[i].len); |
| 773 | |
| 774 | if (nread > 0) { |
| 775 | if (nread & hw->info.align) { |
| 776 | dolog ("warning: Misaligned read %zd (requested %d), " |
| 777 | "alignment %d\n", nread, bufs[i].add << hwshift, |
| 778 | hw->info.align + 1); |
| 779 | } |
| 780 | read_samples += nread >> hwshift; |
| 781 | hw->conv (hw->conv_buf + bufs[i].add, p, nread >> hwshift, |
| 782 | &nominal_volume); |
| 783 | } |
| 784 | |
| 785 | if (bufs[i].len - nread) { |
| 786 | if (nread == -1) { |
| 787 | switch (errno) { |
| 788 | case EINTR: |
| 789 | case EAGAIN: |
| 790 | break; |
| 791 | default: |
| 792 | oss_logerr ( |
| 793 | errno, |
| 794 | "Failed to read %d bytes of audio (to %p)\n", |
| 795 | bufs[i].len, p |
| 796 | ); |
| 797 | break; |
| 798 | } |
| 799 | } |
| 800 | break; |
| 801 | } |
| 802 | } |
| 803 | } |
| 804 | |
| 805 | hw->wpos = (hw->wpos + read_samples) % hw->samples; |
| 806 | return read_samples; |
| 807 | } |
| 808 | |
| 809 | static int oss_read (SWVoiceIn *sw, void *buf, int size) |
| 810 | { |
| 811 | return audio_pcm_sw_read (sw, buf, size); |
| 812 | } |
| 813 | |
| 814 | static int oss_ctl_in (HWVoiceIn *hw, int cmd, ...) |
| 815 | { |
David 'Digit' Turner | 5d0e37b | 2011-01-02 12:58:51 +0100 | [diff] [blame] | 816 | OSSVoiceIn *oss = (OSSVoiceIn *) hw; |
| 817 | |
| 818 | switch (cmd) { |
| 819 | case VOICE_ENABLE: |
| 820 | { |
| 821 | va_list ap; |
| 822 | int poll_mode; |
| 823 | |
| 824 | va_start (ap, cmd); |
| 825 | poll_mode = va_arg (ap, int); |
| 826 | va_end (ap); |
| 827 | |
| 828 | if (poll_mode && oss_poll_in (hw)) { |
| 829 | poll_mode = 0; |
| 830 | } |
| 831 | hw->poll_mode = poll_mode; |
| 832 | } |
| 833 | break; |
| 834 | |
| 835 | case VOICE_DISABLE: |
| 836 | if (hw->poll_mode) { |
| 837 | hw->poll_mode = 0; |
| 838 | qemu_set_fd_handler (oss->fd, NULL, NULL, NULL); |
| 839 | } |
| 840 | break; |
| 841 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 842 | return 0; |
| 843 | } |
| 844 | |
| 845 | static void *oss_audio_init (void) |
| 846 | { |
| 847 | return &conf; |
| 848 | } |
| 849 | |
| 850 | static void oss_audio_fini (void *opaque) |
| 851 | { |
| 852 | (void) opaque; |
| 853 | } |
| 854 | |
| 855 | static struct audio_option oss_options[] = { |
David 'Digit' Turner | 5d0e37b | 2011-01-02 12:58:51 +0100 | [diff] [blame] | 856 | { |
| 857 | .name = "FRAGSIZE", |
| 858 | .tag = AUD_OPT_INT, |
| 859 | .valp = &conf.fragsize, |
| 860 | .descr = "Fragment size in bytes" |
| 861 | }, |
| 862 | { |
| 863 | .name = "NFRAGS", |
| 864 | .tag = AUD_OPT_INT, |
| 865 | .valp = &conf.nfrags, |
| 866 | .descr = "Number of fragments" |
| 867 | }, |
| 868 | { |
| 869 | .name = "MMAP", |
| 870 | .tag = AUD_OPT_BOOL, |
| 871 | .valp = &conf.try_mmap, |
| 872 | .descr = "Try using memory mapped access" |
| 873 | }, |
| 874 | { |
| 875 | .name = "DAC_DEV", |
| 876 | .tag = AUD_OPT_STR, |
| 877 | .valp = &conf.devpath_out, |
| 878 | .descr = "Path to DAC device" |
| 879 | }, |
| 880 | { |
| 881 | .name = "ADC_DEV", |
| 882 | .tag = AUD_OPT_STR, |
| 883 | .valp = &conf.devpath_in, |
| 884 | .descr = "Path to ADC device" |
| 885 | }, |
| 886 | { |
| 887 | .name = "EXCLUSIVE", |
| 888 | .tag = AUD_OPT_BOOL, |
| 889 | .valp = &conf.exclusive, |
| 890 | .descr = "Open device in exclusive mode (vmix wont work)" |
| 891 | }, |
| 892 | #ifdef USE_DSP_POLICY |
| 893 | { |
| 894 | .name = "POLICY", |
| 895 | .tag = AUD_OPT_INT, |
| 896 | .valp = &conf.policy, |
| 897 | .descr = "Set the timing policy of the device, -1 to use fragment mode", |
| 898 | }, |
| 899 | #endif |
| 900 | { |
| 901 | .name = "DEBUG", |
| 902 | .tag = AUD_OPT_BOOL, |
| 903 | .valp = &conf.debug, |
| 904 | .descr = "Turn on some debugging messages" |
| 905 | }, |
| 906 | { /* End of list */ } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 907 | }; |
| 908 | |
| 909 | static struct audio_pcm_ops oss_pcm_ops = { |
David 'Digit' Turner | 5d0e37b | 2011-01-02 12:58:51 +0100 | [diff] [blame] | 910 | .init_out = oss_init_out, |
| 911 | .fini_out = oss_fini_out, |
| 912 | .run_out = oss_run_out, |
| 913 | .write = oss_write, |
| 914 | .ctl_out = oss_ctl_out, |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 915 | |
David 'Digit' Turner | 5d0e37b | 2011-01-02 12:58:51 +0100 | [diff] [blame] | 916 | .init_in = oss_init_in, |
| 917 | .fini_in = oss_fini_in, |
| 918 | .run_in = oss_run_in, |
| 919 | .read = oss_read, |
| 920 | .ctl_in = oss_ctl_in |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 921 | }; |
| 922 | |
| 923 | struct audio_driver oss_audio_driver = { |
David 'Digit' Turner | 5d0e37b | 2011-01-02 12:58:51 +0100 | [diff] [blame] | 924 | .name = "oss", |
| 925 | .descr = "OSS http://www.opensound.com", |
| 926 | .options = oss_options, |
| 927 | .init = oss_audio_init, |
| 928 | .fini = oss_audio_fini, |
| 929 | .pcm_ops = &oss_pcm_ops, |
| 930 | .can_be_default = 1, |
| 931 | .max_voices_out = INT_MAX, |
| 932 | .max_voices_in = INT_MAX, |
| 933 | .voice_size_out = sizeof (OSSVoiceOut), |
| 934 | .voice_size_in = sizeof (OSSVoiceIn) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 935 | }; |