| 1 | /* |
| 2 | * SPDX-License-Identifier: MIT |
| 3 | * |
| 4 | * Copyright (c) 2003-2005 Vassili Karpov (malc) |
| 5 | */ |
| 6 | |
| 7 | #include "qemu/osdep.h" |
| 8 | #include "qemu/audio.h" |
| 9 | #include "migration/vmstate.h" |
| 10 | #include "qemu/bswap.h" |
| 11 | #include "qemu/timer.h" |
| 12 | #include "qapi/error.h" |
| 13 | #include "qapi/clone-visitor.h" |
| 14 | #include "qapi/qobject-input-visitor.h" |
| 15 | #include "qapi/qapi-visit-audio.h" |
| 16 | #include "qapi/qapi-commands-audio.h" |
| 17 | #include "qobject/qdict.h" |
| 18 | #include "qemu/error-report.h" |
| 19 | #include "qemu/log.h" |
| 20 | #include "qemu/module.h" |
| 21 | #include "qemu/help_option.h" |
| 22 | #include "qom/object.h" |
| 23 | #include "system/system.h" |
| 24 | #include "system/replay.h" |
| 25 | #include "system/runstate.h" |
| 26 | #include "trace.h" |
| 27 | #include "trace/control.h" |
| 28 | |
| 29 | #include "audio_int.h" |
| 30 | |
| 31 | #define SW_NAME(sw) (sw)->name ? (sw)->name : "unknown" |
| 32 | |
| 33 | #define audio_bug(fmt, ...) error_report("%s: " fmt, __func__, ##__VA_ARGS__) |
| 34 | |
| 35 | const struct mixeng_volume nominal_volume = { |
| 36 | .mute = 0, |
| 37 | #ifdef FLOAT_MIXENG |
| 38 | .r = 1.0, |
| 39 | .l = 1.0, |
| 40 | #else |
| 41 | .r = 1ULL << 32, |
| 42 | .l = 1ULL << 32, |
| 43 | #endif |
| 44 | }; |
| 45 | |
| 46 | /* |
| 47 | * Convert audio format to mixeng_clip index. Used by audio_pcm_sw_init_ and |
| 48 | * audio_mixeng_backend_add_capture() |
| 49 | */ |
| 50 | static int audio_format_to_index(AudioFormat af) |
| 51 | { |
| 52 | switch (af) { |
| 53 | case AUDIO_FORMAT_U8: |
| 54 | case AUDIO_FORMAT_S8: |
| 55 | return 0; |
| 56 | case AUDIO_FORMAT_U16: |
| 57 | case AUDIO_FORMAT_S16: |
| 58 | return 1; |
| 59 | case AUDIO_FORMAT_U32: |
| 60 | case AUDIO_FORMAT_S32: |
| 61 | return 2; |
| 62 | case AUDIO_FORMAT_F32: |
| 63 | case AUDIO_FORMAT__MAX: |
| 64 | break; |
| 65 | } |
| 66 | |
| 67 | g_assert_not_reached(); |
| 68 | } |
| 69 | |
| 70 | static char *audsettings_to_string(const struct audsettings *as) |
| 71 | { |
| 72 | return g_strdup_printf("frequency=%d nchannels=%d fmt=%s endian=%s", |
| 73 | as->freq, as->nchannels, AudioFormat_str(as->fmt), |
| 74 | as->big_endian ? "big" : "little"); |
| 75 | } |
| 76 | |
| 77 | static int audio_validate_settings (const struct audsettings *as) |
| 78 | { |
| 79 | int invalid; |
| 80 | |
| 81 | invalid = as->nchannels < 1; |
| 82 | |
| 83 | switch (as->fmt) { |
| 84 | case AUDIO_FORMAT_S8: |
| 85 | case AUDIO_FORMAT_U8: |
| 86 | case AUDIO_FORMAT_S16: |
| 87 | case AUDIO_FORMAT_U16: |
| 88 | case AUDIO_FORMAT_S32: |
| 89 | case AUDIO_FORMAT_U32: |
| 90 | case AUDIO_FORMAT_F32: |
| 91 | break; |
| 92 | default: |
| 93 | invalid = 1; |
| 94 | break; |
| 95 | } |
| 96 | |
| 97 | invalid |= as->freq <= 0; |
| 98 | return invalid ? -1 : 0; |
| 99 | } |
| 100 | |
| 101 | static int audio_pcm_info_eq (struct audio_pcm_info *info, const struct audsettings *as) |
| 102 | { |
| 103 | return info->af == as->fmt |
| 104 | && info->freq == as->freq |
| 105 | && info->nchannels == as->nchannels |
| 106 | && info->swap_endianness == (as->big_endian != HOST_BIG_ENDIAN); |
| 107 | } |
| 108 | |
| 109 | void audio_pcm_init_info (struct audio_pcm_info *info, const struct audsettings *as) |
| 110 | { |
| 111 | info->af = as->fmt; |
| 112 | info->freq = as->freq; |
| 113 | info->nchannels = as->nchannels; |
| 114 | info->bytes_per_frame = as->nchannels * audio_format_bits(as->fmt) / 8; |
| 115 | info->bytes_per_second = info->freq * info->bytes_per_frame; |
| 116 | info->swap_endianness = (as->big_endian != HOST_BIG_ENDIAN); |
| 117 | } |
| 118 | |
| 119 | void audio_pcm_info_clear_buf(struct audio_pcm_info *info, void *buf, int len) |
| 120 | { |
| 121 | if (!len) { |
| 122 | return; |
| 123 | } |
| 124 | |
| 125 | switch (info->af) { |
| 126 | case AUDIO_FORMAT_U8: |
| 127 | memset(buf, 0x80, len * info->bytes_per_frame); |
| 128 | break; |
| 129 | case AUDIO_FORMAT_U16: { |
| 130 | int i; |
| 131 | uint16_t *p = buf; |
| 132 | short s = INT16_MAX; |
| 133 | |
| 134 | if (info->swap_endianness) { |
| 135 | s = bswap16(s); |
| 136 | } |
| 137 | |
| 138 | for (i = 0; i < len * info->nchannels; i++) { |
| 139 | p[i] = s; |
| 140 | } |
| 141 | break; |
| 142 | } |
| 143 | case AUDIO_FORMAT_U32: { |
| 144 | int i; |
| 145 | uint32_t *p = buf; |
| 146 | int32_t s = INT32_MAX; |
| 147 | |
| 148 | if (info->swap_endianness) { |
| 149 | s = bswap32(s); |
| 150 | } |
| 151 | |
| 152 | for (i = 0; i < len * info->nchannels; i++) { |
| 153 | p[i] = s; |
| 154 | } |
| 155 | break; |
| 156 | } |
| 157 | case AUDIO_FORMAT_S8: |
| 158 | case AUDIO_FORMAT_S16: |
| 159 | case AUDIO_FORMAT_S32: |
| 160 | case AUDIO_FORMAT_F32: |
| 161 | memset(buf, 0x00, len * info->bytes_per_frame); |
| 162 | break; |
| 163 | case AUDIO_FORMAT__MAX: |
| 164 | g_assert_not_reached(); |
| 165 | } |
| 166 | } |
| 167 | |
| 168 | /* |
| 169 | * Capture |
| 170 | */ |
| 171 | static CaptureVoiceOut *audio_pcm_capture_find_specific(AudioMixengBackend *s, |
| 172 | const struct audsettings *as) |
| 173 | { |
| 174 | CaptureVoiceOut *cap; |
| 175 | |
| 176 | for (cap = s->cap_head.lh_first; cap; cap = cap->entries.le_next) { |
| 177 | if (audio_pcm_info_eq (&cap->hw.info, as)) { |
| 178 | return cap; |
| 179 | } |
| 180 | } |
| 181 | return NULL; |
| 182 | } |
| 183 | |
| 184 | static void audio_notify_capture (CaptureVoiceOut *cap, audcnotification_e cmd) |
| 185 | { |
| 186 | struct capture_callback *cb; |
| 187 | |
| 188 | trace_audio_notify_capture(cmd); |
| 189 | |
| 190 | for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) { |
| 191 | cb->ops.notify (cb->opaque, cmd); |
| 192 | } |
| 193 | } |
| 194 | |
| 195 | static void audio_capture_maybe_changed(CaptureVoiceOut *cap, bool enabled) |
| 196 | { |
| 197 | if (cap->hw.enabled != enabled) { |
| 198 | audcnotification_e cmd; |
| 199 | cap->hw.enabled = enabled; |
| 200 | cmd = enabled ? AUD_CNOTIFY_ENABLE : AUD_CNOTIFY_DISABLE; |
| 201 | audio_notify_capture (cap, cmd); |
| 202 | } |
| 203 | } |
| 204 | |
| 205 | static void audio_recalc_and_notify_capture (CaptureVoiceOut *cap) |
| 206 | { |
| 207 | HWVoiceOut *hw = &cap->hw; |
| 208 | SWVoiceOut *sw; |
| 209 | bool enabled = false; |
| 210 | |
| 211 | for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) { |
| 212 | if (sw->active) { |
| 213 | enabled = true; |
| 214 | break; |
| 215 | } |
| 216 | } |
| 217 | audio_capture_maybe_changed (cap, enabled); |
| 218 | } |
| 219 | |
| 220 | static void audio_detach_capture (HWVoiceOut *hw) |
| 221 | { |
| 222 | SWVoiceCap *sc = hw->cap_head.lh_first; |
| 223 | |
| 224 | while (sc) { |
| 225 | SWVoiceCap *sc1 = sc->entries.le_next; |
| 226 | SWVoiceOut *sw = &sc->sw; |
| 227 | CaptureVoiceOut *cap = sc->cap; |
| 228 | int was_active = sw->active; |
| 229 | |
| 230 | g_clear_pointer(&sw->name, g_free); |
| 231 | if (sw->rate) { |
| 232 | st_rate_stop (sw->rate); |
| 233 | sw->rate = NULL; |
| 234 | } |
| 235 | |
| 236 | QLIST_REMOVE (sw, entries); |
| 237 | QLIST_REMOVE (sc, entries); |
| 238 | g_free (sc); |
| 239 | if (was_active) { |
| 240 | /* We have removed soft voice from the capture: |
| 241 | this might have changed the overall status of the capture |
| 242 | since this might have been the only active voice */ |
| 243 | audio_recalc_and_notify_capture (cap); |
| 244 | } |
| 245 | sc = sc1; |
| 246 | } |
| 247 | } |
| 248 | |
| 249 | static int audio_attach_capture (HWVoiceOut *hw) |
| 250 | { |
| 251 | AudioMixengBackend *s = hw->s; |
| 252 | CaptureVoiceOut *cap; |
| 253 | |
| 254 | audio_detach_capture (hw); |
| 255 | for (cap = s->cap_head.lh_first; cap; cap = cap->entries.le_next) { |
| 256 | SWVoiceCap *sc; |
| 257 | SWVoiceOut *sw; |
| 258 | HWVoiceOut *hw_cap = &cap->hw; |
| 259 | |
| 260 | sc = g_malloc0(sizeof(*sc)); |
| 261 | |
| 262 | sc->cap = cap; |
| 263 | sw = &sc->sw; |
| 264 | sw->hw = hw_cap; |
| 265 | sw->info = hw->info; |
| 266 | sw->empty = true; |
| 267 | sw->active = hw->enabled; |
| 268 | sw->vol = nominal_volume; |
| 269 | sw->rate = st_rate_start (sw->info.freq, hw_cap->info.freq); |
| 270 | QLIST_INSERT_HEAD (&hw_cap->sw_head, sw, entries); |
| 271 | QLIST_INSERT_HEAD (&hw->cap_head, sc, entries); |
| 272 | sw->name = g_strdup_printf("for %p %d,%s,%d", |
| 273 | hw, sw->info.freq, AudioFormat_str(sw->info.af), |
| 274 | sw->info.nchannels); |
| 275 | trace_audio_capture_attach(sw->name, sw->active); |
| 276 | if (sw->active) { |
| 277 | audio_capture_maybe_changed (cap, 1); |
| 278 | } |
| 279 | } |
| 280 | return 0; |
| 281 | } |
| 282 | |
| 283 | /* |
| 284 | * Hard voice (capture) |
| 285 | */ |
| 286 | static size_t audio_pcm_hw_find_min_in (HWVoiceIn *hw) |
| 287 | { |
| 288 | SWVoiceIn *sw; |
| 289 | size_t m = hw->total_samples_captured; |
| 290 | |
| 291 | for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) { |
| 292 | if (sw->active) { |
| 293 | m = MIN (m, sw->total_hw_samples_acquired); |
| 294 | } |
| 295 | } |
| 296 | return m; |
| 297 | } |
| 298 | |
| 299 | static size_t audio_pcm_hw_get_live_in(HWVoiceIn *hw) |
| 300 | { |
| 301 | size_t live = hw->total_samples_captured - audio_pcm_hw_find_min_in (hw); |
| 302 | if (live > hw->conv_buf.size) { |
| 303 | audio_bug("live=%zu hw->conv_buf.size=%zu", live, hw->conv_buf.size); |
| 304 | return 0; |
| 305 | } |
| 306 | return live; |
| 307 | } |
| 308 | |
| 309 | static size_t audio_pcm_hw_conv_in(HWVoiceIn *hw, void *pcm_buf, size_t samples) |
| 310 | { |
| 311 | size_t conv = 0; |
| 312 | STSampleBuffer *conv_buf = &hw->conv_buf; |
| 313 | |
| 314 | while (samples) { |
| 315 | uint8_t *src = advance(pcm_buf, conv * hw->info.bytes_per_frame); |
| 316 | size_t proc = MIN(samples, conv_buf->size - conv_buf->pos); |
| 317 | |
| 318 | hw->conv(conv_buf->buffer + conv_buf->pos, src, proc); |
| 319 | conv_buf->pos = (conv_buf->pos + proc) % conv_buf->size; |
| 320 | samples -= proc; |
| 321 | conv += proc; |
| 322 | } |
| 323 | |
| 324 | return conv; |
| 325 | } |
| 326 | |
| 327 | /* |
| 328 | * Soft voice (capture) |
| 329 | */ |
| 330 | static void audio_pcm_sw_resample_in(SWVoiceIn *sw, |
| 331 | size_t frames_in_max, size_t frames_out_max, |
| 332 | size_t *total_in, size_t *total_out) |
| 333 | { |
| 334 | HWVoiceIn *hw = sw->hw; |
| 335 | struct st_sample *src, *dst; |
| 336 | size_t live, rpos, frames_in, frames_out; |
| 337 | |
| 338 | live = hw->total_samples_captured - sw->total_hw_samples_acquired; |
| 339 | rpos = audio_ring_posb(hw->conv_buf.pos, live, hw->conv_buf.size); |
| 340 | |
| 341 | /* resample conv_buf from rpos to end of buffer */ |
| 342 | src = hw->conv_buf.buffer + rpos; |
| 343 | frames_in = MIN(frames_in_max, hw->conv_buf.size - rpos); |
| 344 | dst = sw->resample_buf.buffer; |
| 345 | frames_out = frames_out_max; |
| 346 | st_rate_flow(sw->rate, src, dst, &frames_in, &frames_out); |
| 347 | rpos += frames_in; |
| 348 | *total_in = frames_in; |
| 349 | *total_out = frames_out; |
| 350 | |
| 351 | /* resample conv_buf from start of buffer if there are input frames left */ |
| 352 | if (frames_in_max - frames_in && rpos == hw->conv_buf.size) { |
| 353 | src = hw->conv_buf.buffer; |
| 354 | frames_in = frames_in_max - frames_in; |
| 355 | dst += frames_out; |
| 356 | frames_out = frames_out_max - frames_out; |
| 357 | st_rate_flow(sw->rate, src, dst, &frames_in, &frames_out); |
| 358 | *total_in += frames_in; |
| 359 | *total_out += frames_out; |
| 360 | } |
| 361 | } |
| 362 | |
| 363 | static size_t audio_pcm_sw_read(SWVoiceIn *sw, void *buf, size_t buf_len) |
| 364 | { |
| 365 | HWVoiceIn *hw = sw->hw; |
| 366 | size_t live, frames_out_max, total_in, total_out; |
| 367 | |
| 368 | live = hw->total_samples_captured - sw->total_hw_samples_acquired; |
| 369 | if (!live) { |
| 370 | return 0; |
| 371 | } |
| 372 | if (live > hw->conv_buf.size) { |
| 373 | audio_bug("live=%zu hw->conv_buf.size=%zu", live, hw->conv_buf.size); |
| 374 | return 0; |
| 375 | } |
| 376 | |
| 377 | frames_out_max = MIN(buf_len / sw->info.bytes_per_frame, |
| 378 | sw->resample_buf.size); |
| 379 | |
| 380 | audio_pcm_sw_resample_in(sw, live, frames_out_max, &total_in, &total_out); |
| 381 | |
| 382 | if (!AUDIO_MIXENG_BACKEND_GET_CLASS(hw->s)->volume_in) { |
| 383 | mixeng_volume(sw->resample_buf.buffer, total_out, &sw->vol); |
| 384 | } |
| 385 | sw->clip(buf, sw->resample_buf.buffer, total_out); |
| 386 | |
| 387 | sw->total_hw_samples_acquired += total_in; |
| 388 | return total_out * sw->info.bytes_per_frame; |
| 389 | } |
| 390 | |
| 391 | /* |
| 392 | * Hard voice (playback) |
| 393 | */ |
| 394 | static size_t audio_pcm_hw_find_min_out (HWVoiceOut *hw, int *nb_livep) |
| 395 | { |
| 396 | SWVoiceOut *sw; |
| 397 | size_t m = SIZE_MAX; |
| 398 | int nb_live = 0; |
| 399 | |
| 400 | for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) { |
| 401 | if (sw->active || !sw->empty) { |
| 402 | m = MIN (m, sw->total_hw_samples_mixed); |
| 403 | nb_live += 1; |
| 404 | } |
| 405 | } |
| 406 | |
| 407 | *nb_livep = nb_live; |
| 408 | return m; |
| 409 | } |
| 410 | |
| 411 | static size_t audio_pcm_hw_get_live_out (HWVoiceOut *hw, int *nb_live) |
| 412 | { |
| 413 | size_t smin; |
| 414 | int nb_live1; |
| 415 | |
| 416 | smin = audio_pcm_hw_find_min_out (hw, &nb_live1); |
| 417 | if (nb_live) { |
| 418 | *nb_live = nb_live1; |
| 419 | } |
| 420 | |
| 421 | if (nb_live1) { |
| 422 | size_t live = smin; |
| 423 | |
| 424 | if (live > hw->mix_buf.size) { |
| 425 | audio_bug("live=%zu hw->mix_buf.size=%zu", live, hw->mix_buf.size); |
| 426 | return 0; |
| 427 | } |
| 428 | return live; |
| 429 | } |
| 430 | return 0; |
| 431 | } |
| 432 | |
| 433 | static size_t audio_pcm_hw_get_free(HWVoiceOut *hw) |
| 434 | { |
| 435 | AudioMixengBackendClass *k = AUDIO_MIXENG_BACKEND_GET_CLASS(hw->s); |
| 436 | |
| 437 | return (k->buffer_get_free ? k->buffer_get_free(hw) : INT_MAX) / |
| 438 | hw->info.bytes_per_frame; |
| 439 | } |
| 440 | |
| 441 | static void audio_pcm_hw_clip_out(HWVoiceOut *hw, void *pcm_buf, size_t len) |
| 442 | { |
| 443 | size_t clipped = 0; |
| 444 | size_t pos = hw->mix_buf.pos; |
| 445 | |
| 446 | while (len) { |
| 447 | st_sample *src = hw->mix_buf.buffer + pos; |
| 448 | uint8_t *dst = advance(pcm_buf, clipped * hw->info.bytes_per_frame); |
| 449 | size_t samples_till_end_of_buf = hw->mix_buf.size - pos; |
| 450 | size_t samples_to_clip = MIN(len, samples_till_end_of_buf); |
| 451 | |
| 452 | hw->clip(dst, src, samples_to_clip); |
| 453 | |
| 454 | pos = (pos + samples_to_clip) % hw->mix_buf.size; |
| 455 | len -= samples_to_clip; |
| 456 | clipped += samples_to_clip; |
| 457 | } |
| 458 | } |
| 459 | |
| 460 | /* |
| 461 | * Soft voice (playback) |
| 462 | */ |
| 463 | static void audio_pcm_sw_resample_out(SWVoiceOut *sw, |
| 464 | size_t frames_in_max, size_t frames_out_max, |
| 465 | size_t *total_in, size_t *total_out) |
| 466 | { |
| 467 | HWVoiceOut *hw = sw->hw; |
| 468 | struct st_sample *src, *dst; |
| 469 | size_t live, wpos, frames_in, frames_out; |
| 470 | |
| 471 | live = sw->total_hw_samples_mixed; |
| 472 | wpos = (hw->mix_buf.pos + live) % hw->mix_buf.size; |
| 473 | |
| 474 | /* write to mix_buf from wpos to end of buffer */ |
| 475 | src = sw->resample_buf.buffer; |
| 476 | frames_in = frames_in_max; |
| 477 | dst = hw->mix_buf.buffer + wpos; |
| 478 | frames_out = MIN(frames_out_max, hw->mix_buf.size - wpos); |
| 479 | st_rate_flow_mix(sw->rate, src, dst, &frames_in, &frames_out); |
| 480 | wpos += frames_out; |
| 481 | *total_in = frames_in; |
| 482 | *total_out = frames_out; |
| 483 | |
| 484 | /* write to mix_buf from start of buffer if there are input frames left */ |
| 485 | if (frames_in_max - frames_in > 0 && wpos == hw->mix_buf.size) { |
| 486 | src += frames_in; |
| 487 | frames_in = frames_in_max - frames_in; |
| 488 | dst = hw->mix_buf.buffer; |
| 489 | frames_out = frames_out_max - frames_out; |
| 490 | st_rate_flow_mix(sw->rate, src, dst, &frames_in, &frames_out); |
| 491 | *total_in += frames_in; |
| 492 | *total_out += frames_out; |
| 493 | } |
| 494 | } |
| 495 | |
| 496 | static size_t audio_pcm_sw_write(SWVoiceOut *sw, void *buf, size_t buf_len) |
| 497 | { |
| 498 | HWVoiceOut *hw = sw->hw; |
| 499 | size_t live, dead, hw_free, sw_max, fe_max; |
| 500 | size_t frames_in_max, frames_out_max, total_in, total_out; |
| 501 | |
| 502 | live = sw->total_hw_samples_mixed; |
| 503 | if (live > hw->mix_buf.size) { |
| 504 | audio_bug("live=%zu hw->mix_buf.size=%zu", live, hw->mix_buf.size); |
| 505 | return 0; |
| 506 | } |
| 507 | |
| 508 | if (live == hw->mix_buf.size) { |
| 509 | trace_audio_out_full(sw->name, live); |
| 510 | return 0; |
| 511 | } |
| 512 | |
| 513 | dead = hw->mix_buf.size - live; |
| 514 | hw_free = audio_pcm_hw_get_free(hw); |
| 515 | hw_free = hw_free > live ? hw_free - live : 0; |
| 516 | frames_out_max = MIN(dead, hw_free); |
| 517 | sw_max = st_rate_frames_in(sw->rate, frames_out_max); |
| 518 | fe_max = MIN(buf_len / sw->info.bytes_per_frame + sw->resample_buf.pos, |
| 519 | sw->resample_buf.size); |
| 520 | frames_in_max = MIN(sw_max, fe_max); |
| 521 | |
| 522 | if (!frames_in_max) { |
| 523 | return 0; |
| 524 | } |
| 525 | |
| 526 | if (frames_in_max > sw->resample_buf.pos) { |
| 527 | sw->conv(sw->resample_buf.buffer + sw->resample_buf.pos, |
| 528 | buf, frames_in_max - sw->resample_buf.pos); |
| 529 | if (!AUDIO_MIXENG_BACKEND_GET_CLASS(sw->hw->s)->volume_out) { |
| 530 | mixeng_volume(sw->resample_buf.buffer + sw->resample_buf.pos, |
| 531 | frames_in_max - sw->resample_buf.pos, &sw->vol); |
| 532 | } |
| 533 | } |
| 534 | |
| 535 | audio_pcm_sw_resample_out(sw, frames_in_max, frames_out_max, |
| 536 | &total_in, &total_out); |
| 537 | |
| 538 | sw->total_hw_samples_mixed += total_out; |
| 539 | sw->empty = sw->total_hw_samples_mixed == 0; |
| 540 | |
| 541 | /* |
| 542 | * Upsampling may leave one audio frame in the resample buffer. Decrement |
| 543 | * total_in by one if there was a leftover frame from the previous resample |
| 544 | * pass in the resample buffer. Increment total_in by one if the current |
| 545 | * resample pass left one frame in the resample buffer. |
| 546 | */ |
| 547 | if (frames_in_max - total_in == 1) { |
| 548 | /* copy one leftover audio frame to the beginning of the buffer */ |
| 549 | *sw->resample_buf.buffer = *(sw->resample_buf.buffer + total_in); |
| 550 | total_in += 1 - sw->resample_buf.pos; |
| 551 | sw->resample_buf.pos = 1; |
| 552 | } else if (total_in >= sw->resample_buf.pos) { |
| 553 | total_in -= sw->resample_buf.pos; |
| 554 | sw->resample_buf.pos = 0; |
| 555 | } |
| 556 | |
| 557 | trace_audio_sw_write(SW_NAME(sw), buf_len / sw->info.bytes_per_frame, |
| 558 | total_in, sw->total_hw_samples_mixed); |
| 559 | |
| 560 | return total_in * sw->info.bytes_per_frame; |
| 561 | } |
| 562 | |
| 563 | #define DAC |
| 564 | #include "audio_template.h" |
| 565 | #undef DAC |
| 566 | #include "audio_template.h" |
| 567 | |
| 568 | /* |
| 569 | * Timer |
| 570 | */ |
| 571 | static int audio_is_timer_needed(AudioMixengBackend *s) |
| 572 | { |
| 573 | HWVoiceIn *hwi = NULL; |
| 574 | HWVoiceOut *hwo = NULL; |
| 575 | |
| 576 | while ((hwo = audio_pcm_hw_find_any_enabled_out(s, hwo))) { |
| 577 | if (!hwo->poll_mode) { |
| 578 | return 1; |
| 579 | } |
| 580 | } |
| 581 | while ((hwi = audio_pcm_hw_find_any_enabled_in(s, hwi))) { |
| 582 | if (!hwi->poll_mode) { |
| 583 | return 1; |
| 584 | } |
| 585 | } |
| 586 | return 0; |
| 587 | } |
| 588 | |
| 589 | static void audio_reset_timer(AudioMixengBackend *s) |
| 590 | { |
| 591 | if (audio_is_timer_needed(s)) { |
| 592 | timer_mod_anticipate_ns(s->ts, |
| 593 | qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + s->period_ticks); |
| 594 | if (!s->timer_running) { |
| 595 | s->timer_running = true; |
| 596 | s->timer_last = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); |
| 597 | trace_audio_timer_start(s->period_ticks / SCALE_MS); |
| 598 | } |
| 599 | } else { |
| 600 | timer_del(s->ts); |
| 601 | if (s->timer_running) { |
| 602 | s->timer_running = false; |
| 603 | trace_audio_timer_stop(); |
| 604 | } |
| 605 | } |
| 606 | } |
| 607 | |
| 608 | static void audio_timer (void *opaque) |
| 609 | { |
| 610 | int64_t now, diff; |
| 611 | AudioMixengBackend *s = opaque; |
| 612 | |
| 613 | now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); |
| 614 | diff = now - s->timer_last; |
| 615 | if (diff > s->period_ticks * 3 / 2) { |
| 616 | trace_audio_timer_delayed(diff / SCALE_MS); |
| 617 | } |
| 618 | s->timer_last = now; |
| 619 | |
| 620 | audio_run(s, "timer"); |
| 621 | audio_reset_timer(s); |
| 622 | } |
| 623 | |
| 624 | /* |
| 625 | * Public API |
| 626 | */ |
| 627 | static size_t audio_mixeng_backend_write(AudioBackend *be, SWVoiceOut *sw, |
| 628 | void *buf, size_t size) |
| 629 | { |
| 630 | HWVoiceOut *hw; |
| 631 | |
| 632 | if (!sw) { |
| 633 | /* XXX: Consider options */ |
| 634 | return size; |
| 635 | } |
| 636 | hw = sw->hw; |
| 637 | |
| 638 | if (!hw->enabled) { |
| 639 | warn_report("audio: Writing to disabled voice %s", SW_NAME(sw)); |
| 640 | return 0; |
| 641 | } |
| 642 | |
| 643 | if (audio_get_pdo_out(hw->s->dev)->mixing_engine) { |
| 644 | return audio_pcm_sw_write(sw, buf, size); |
| 645 | } else { |
| 646 | return AUDIO_MIXENG_BACKEND_GET_CLASS(hw->s)->write(hw, buf, size); |
| 647 | } |
| 648 | } |
| 649 | |
| 650 | static size_t audio_mixeng_backend_read(AudioBackend *be, |
| 651 | SWVoiceIn *sw, void *buf, size_t size) |
| 652 | { |
| 653 | HWVoiceIn *hw; |
| 654 | |
| 655 | if (!sw) { |
| 656 | /* XXX: Consider options */ |
| 657 | return size; |
| 658 | } |
| 659 | hw = sw->hw; |
| 660 | |
| 661 | if (!hw->enabled) { |
| 662 | warn_report("audio: Reading from disabled voice %s", SW_NAME(sw)); |
| 663 | return 0; |
| 664 | } |
| 665 | |
| 666 | if (audio_get_pdo_in(hw->s->dev)->mixing_engine) { |
| 667 | return audio_pcm_sw_read(sw, buf, size); |
| 668 | } else { |
| 669 | return AUDIO_MIXENG_BACKEND_GET_CLASS(hw->s)->read(hw, buf, size); |
| 670 | } |
| 671 | |
| 672 | } |
| 673 | |
| 674 | static int audio_mixeng_backend_get_buffer_size_out(AudioBackend *be, SWVoiceOut *sw) |
| 675 | { |
| 676 | if (!sw) { |
| 677 | return 0; |
| 678 | } |
| 679 | |
| 680 | if (audio_get_pdo_out(sw->s->dev)->mixing_engine) { |
| 681 | return sw->resample_buf.size * sw->info.bytes_per_frame; |
| 682 | } |
| 683 | |
| 684 | return sw->hw->samples * sw->hw->info.bytes_per_frame; |
| 685 | } |
| 686 | |
| 687 | static void audio_mixeng_backend_set_active_out(AudioBackend *be, SWVoiceOut *sw, |
| 688 | bool on) |
| 689 | { |
| 690 | HWVoiceOut *hw; |
| 691 | |
| 692 | if (!sw) { |
| 693 | return; |
| 694 | } |
| 695 | |
| 696 | hw = sw->hw; |
| 697 | if (sw->active != on) { |
| 698 | AudioMixengBackend *s = sw->s; |
| 699 | SWVoiceOut *temp_sw; |
| 700 | SWVoiceCap *sc; |
| 701 | |
| 702 | if (on) { |
| 703 | AudioMixengBackendClass *k = AUDIO_MIXENG_BACKEND_GET_CLASS(s); |
| 704 | |
| 705 | hw->pending_disable = 0; |
| 706 | if (!hw->enabled) { |
| 707 | hw->enabled = true; |
| 708 | if (runstate_is_running()) { |
| 709 | if (k->enable_out) { |
| 710 | k->enable_out(hw, true); |
| 711 | } |
| 712 | audio_reset_timer (s); |
| 713 | } |
| 714 | } |
| 715 | } else { |
| 716 | if (hw->enabled) { |
| 717 | int nb_active = 0; |
| 718 | |
| 719 | for (temp_sw = hw->sw_head.lh_first; temp_sw; |
| 720 | temp_sw = temp_sw->entries.le_next) { |
| 721 | nb_active += temp_sw->active != 0; |
| 722 | } |
| 723 | |
| 724 | hw->pending_disable = nb_active == 1; |
| 725 | } |
| 726 | } |
| 727 | |
| 728 | for (sc = hw->cap_head.lh_first; sc; sc = sc->entries.le_next) { |
| 729 | sc->sw.active = hw->enabled; |
| 730 | if (hw->enabled) { |
| 731 | audio_capture_maybe_changed (sc->cap, 1); |
| 732 | } |
| 733 | } |
| 734 | sw->active = on; |
| 735 | } |
| 736 | |
| 737 | } |
| 738 | |
| 739 | static void audio_mixeng_backend_set_active_in(AudioBackend *be, SWVoiceIn *sw, bool on) |
| 740 | { |
| 741 | HWVoiceIn *hw; |
| 742 | |
| 743 | if (!sw) { |
| 744 | return; |
| 745 | } |
| 746 | |
| 747 | hw = sw->hw; |
| 748 | if (sw->active != on) { |
| 749 | AudioMixengBackend *s = sw->s; |
| 750 | AudioMixengBackendClass *k = AUDIO_MIXENG_BACKEND_GET_CLASS(s); |
| 751 | SWVoiceIn *temp_sw; |
| 752 | |
| 753 | if (on) { |
| 754 | if (!hw->enabled) { |
| 755 | hw->enabled = true; |
| 756 | if (runstate_is_running()) { |
| 757 | if (k->enable_in) { |
| 758 | k->enable_in(hw, true); |
| 759 | } |
| 760 | audio_reset_timer (s); |
| 761 | } |
| 762 | } |
| 763 | sw->total_hw_samples_acquired = hw->total_samples_captured; |
| 764 | } else { |
| 765 | if (hw->enabled) { |
| 766 | int nb_active = 0; |
| 767 | |
| 768 | for (temp_sw = hw->sw_head.lh_first; temp_sw; |
| 769 | temp_sw = temp_sw->entries.le_next) { |
| 770 | nb_active += temp_sw->active != 0; |
| 771 | } |
| 772 | |
| 773 | if (nb_active == 1) { |
| 774 | hw->enabled = false; |
| 775 | if (k->enable_in) { |
| 776 | k->enable_in(hw, false); |
| 777 | } |
| 778 | } |
| 779 | } |
| 780 | } |
| 781 | sw->active = on; |
| 782 | } |
| 783 | } |
| 784 | |
| 785 | static size_t audio_get_avail(SWVoiceIn *sw) |
| 786 | { |
| 787 | size_t live; |
| 788 | |
| 789 | if (!sw) { |
| 790 | return 0; |
| 791 | } |
| 792 | |
| 793 | live = sw->hw->total_samples_captured - sw->total_hw_samples_acquired; |
| 794 | if (live > sw->hw->conv_buf.size) { |
| 795 | audio_bug("live=%zu sw->hw->conv_buf.size=%zu", live, |
| 796 | sw->hw->conv_buf.size); |
| 797 | return 0; |
| 798 | } |
| 799 | |
| 800 | trace_audio_get_avail(SW_NAME(sw), live, st_rate_frames_out(sw->rate, live)); |
| 801 | |
| 802 | return live; |
| 803 | } |
| 804 | |
| 805 | static size_t audio_get_free(SWVoiceOut *sw) |
| 806 | { |
| 807 | size_t live, dead; |
| 808 | |
| 809 | if (!sw) { |
| 810 | return 0; |
| 811 | } |
| 812 | |
| 813 | live = sw->total_hw_samples_mixed; |
| 814 | |
| 815 | if (live > sw->hw->mix_buf.size) { |
| 816 | audio_bug("live=%zu sw->hw->mix_buf.size=%zu", live, |
| 817 | sw->hw->mix_buf.size); |
| 818 | return 0; |
| 819 | } |
| 820 | |
| 821 | dead = sw->hw->mix_buf.size - live; |
| 822 | |
| 823 | trace_audio_get_free(SW_NAME(sw), live, dead, |
| 824 | st_rate_frames_in(sw->rate, dead)); |
| 825 | |
| 826 | return dead; |
| 827 | } |
| 828 | |
| 829 | static void audio_capture_mix_and_clear(HWVoiceOut *hw, size_t rpos, |
| 830 | size_t samples) |
| 831 | { |
| 832 | size_t n; |
| 833 | |
| 834 | if (hw->enabled) { |
| 835 | SWVoiceCap *sc; |
| 836 | |
| 837 | for (sc = hw->cap_head.lh_first; sc; sc = sc->entries.le_next) { |
| 838 | SWVoiceOut *sw = &sc->sw; |
| 839 | size_t rpos2 = rpos; |
| 840 | |
| 841 | n = samples; |
| 842 | while (n) { |
| 843 | size_t till_end_of_hw = hw->mix_buf.size - rpos2; |
| 844 | size_t to_read = MIN(till_end_of_hw, n); |
| 845 | size_t live, frames_in, frames_out; |
| 846 | |
| 847 | sw->resample_buf.buffer = hw->mix_buf.buffer + rpos2; |
| 848 | sw->resample_buf.size = to_read; |
| 849 | live = sw->total_hw_samples_mixed; |
| 850 | |
| 851 | audio_pcm_sw_resample_out(sw, |
| 852 | to_read, sw->hw->mix_buf.size - live, |
| 853 | &frames_in, &frames_out); |
| 854 | |
| 855 | sw->total_hw_samples_mixed += frames_out; |
| 856 | sw->empty = sw->total_hw_samples_mixed == 0; |
| 857 | |
| 858 | if (to_read - frames_in) { |
| 859 | audio_bug("Could not mix %zu frames into a capture " |
| 860 | "buffer, mixed %zu", to_read, frames_in); |
| 861 | break; |
| 862 | } |
| 863 | n -= to_read; |
| 864 | rpos2 = (rpos2 + to_read) % hw->mix_buf.size; |
| 865 | } |
| 866 | } |
| 867 | } |
| 868 | |
| 869 | n = MIN(samples, hw->mix_buf.size - rpos); |
| 870 | mixeng_clear(hw->mix_buf.buffer + rpos, n); |
| 871 | mixeng_clear(hw->mix_buf.buffer, samples - n); |
| 872 | } |
| 873 | |
| 874 | static size_t audio_pcm_hw_run_out(HWVoiceOut *hw, size_t live) |
| 875 | { |
| 876 | AudioMixengBackendClass *k = AUDIO_MIXENG_BACKEND_GET_CLASS(hw->s); |
| 877 | size_t clipped = 0; |
| 878 | |
| 879 | while (live) { |
| 880 | size_t size = live * hw->info.bytes_per_frame; |
| 881 | size_t decr, proc; |
| 882 | void *buf = k->get_buffer_out(hw, &size); |
| 883 | |
| 884 | if (size == 0) { |
| 885 | break; |
| 886 | } |
| 887 | |
| 888 | decr = MIN(size / hw->info.bytes_per_frame, live); |
| 889 | if (buf) { |
| 890 | audio_pcm_hw_clip_out(hw, buf, decr); |
| 891 | } |
| 892 | proc = k->put_buffer_out(hw, buf, decr * hw->info.bytes_per_frame) / |
| 893 | hw->info.bytes_per_frame; |
| 894 | |
| 895 | live -= proc; |
| 896 | clipped += proc; |
| 897 | hw->mix_buf.pos = (hw->mix_buf.pos + proc) % hw->mix_buf.size; |
| 898 | |
| 899 | if (proc == 0 || proc < decr) { |
| 900 | break; |
| 901 | } |
| 902 | } |
| 903 | |
| 904 | if (k->run_buffer_out) { |
| 905 | k->run_buffer_out(hw); |
| 906 | } |
| 907 | |
| 908 | return clipped; |
| 909 | } |
| 910 | |
| 911 | static void audio_run_out(AudioMixengBackend *s) |
| 912 | { |
| 913 | AudioMixengBackendClass *k = AUDIO_MIXENG_BACKEND_GET_CLASS(s); |
| 914 | HWVoiceOut *hw = NULL; |
| 915 | SWVoiceOut *sw; |
| 916 | |
| 917 | while ((hw = audio_pcm_hw_find_any_enabled_out(s, hw))) { |
| 918 | size_t played, live, prev_rpos; |
| 919 | size_t hw_free = audio_pcm_hw_get_free(hw); |
| 920 | int nb_live; |
| 921 | |
| 922 | if (!audio_get_pdo_out(s->dev)->mixing_engine) { |
| 923 | /* there is exactly 1 sw for each hw with no mixeng */ |
| 924 | sw = hw->sw_head.lh_first; |
| 925 | |
| 926 | if (hw->pending_disable) { |
| 927 | hw->enabled = false; |
| 928 | hw->pending_disable = false; |
| 929 | if (k->enable_out) { |
| 930 | k->enable_out(hw, false); |
| 931 | } |
| 932 | } |
| 933 | |
| 934 | if (sw->active) { |
| 935 | sw->callback.fn(sw->callback.opaque, |
| 936 | hw_free * sw->info.bytes_per_frame); |
| 937 | } |
| 938 | |
| 939 | if (k->run_buffer_out) { |
| 940 | k->run_buffer_out(hw); |
| 941 | } |
| 942 | |
| 943 | continue; |
| 944 | } |
| 945 | |
| 946 | for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) { |
| 947 | if (sw->active) { |
| 948 | size_t sw_free = audio_get_free(sw); |
| 949 | size_t free; |
| 950 | |
| 951 | if (hw_free > sw->total_hw_samples_mixed) { |
| 952 | free = st_rate_frames_in(sw->rate, |
| 953 | MIN(sw_free, hw_free - sw->total_hw_samples_mixed)); |
| 954 | } else { |
| 955 | free = 0; |
| 956 | } |
| 957 | if (free > sw->resample_buf.pos) { |
| 958 | free = MIN(free, sw->resample_buf.size) |
| 959 | - sw->resample_buf.pos; |
| 960 | sw->callback.fn(sw->callback.opaque, |
| 961 | free * sw->info.bytes_per_frame); |
| 962 | } |
| 963 | } |
| 964 | } |
| 965 | |
| 966 | live = audio_pcm_hw_get_live_out (hw, &nb_live); |
| 967 | if (!nb_live) { |
| 968 | live = 0; |
| 969 | } |
| 970 | |
| 971 | if (live > hw->mix_buf.size) { |
| 972 | audio_bug("live=%zu hw->mix_buf.size=%zu", live, hw->mix_buf.size); |
| 973 | continue; |
| 974 | } |
| 975 | |
| 976 | if (hw->pending_disable && !nb_live) { |
| 977 | SWVoiceCap *sc; |
| 978 | |
| 979 | trace_audio_out_disable(); |
| 980 | hw->enabled = false; |
| 981 | hw->pending_disable = false; |
| 982 | if (k->enable_out) { |
| 983 | k->enable_out(hw, false); |
| 984 | } |
| 985 | for (sc = hw->cap_head.lh_first; sc; sc = sc->entries.le_next) { |
| 986 | sc->sw.active = false; |
| 987 | audio_recalc_and_notify_capture (sc->cap); |
| 988 | } |
| 989 | continue; |
| 990 | } |
| 991 | |
| 992 | if (!live) { |
| 993 | if (k->run_buffer_out) { |
| 994 | k->run_buffer_out(hw); |
| 995 | } |
| 996 | continue; |
| 997 | } |
| 998 | |
| 999 | prev_rpos = hw->mix_buf.pos; |
| 1000 | played = audio_pcm_hw_run_out(hw, live); |
| 1001 | replay_audio_out(&played); |
| 1002 | if (hw->mix_buf.pos >= hw->mix_buf.size) { |
| 1003 | audio_bug("hw->mix_buf.pos=%zu hw->mix_buf.size=%zu played=%zu", |
| 1004 | hw->mix_buf.pos, hw->mix_buf.size, played); |
| 1005 | hw->mix_buf.pos = 0; |
| 1006 | } |
| 1007 | |
| 1008 | trace_audio_out_played(played); |
| 1009 | |
| 1010 | if (played) { |
| 1011 | audio_capture_mix_and_clear (hw, prev_rpos, played); |
| 1012 | } |
| 1013 | |
| 1014 | for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) { |
| 1015 | if (!sw->active && sw->empty) { |
| 1016 | continue; |
| 1017 | } |
| 1018 | |
| 1019 | if (played > sw->total_hw_samples_mixed) { |
| 1020 | audio_bug("played=%zu sw->total_hw_samples_mixed=%zu", |
| 1021 | played, sw->total_hw_samples_mixed); |
| 1022 | played = sw->total_hw_samples_mixed; |
| 1023 | } |
| 1024 | |
| 1025 | sw->total_hw_samples_mixed -= played; |
| 1026 | |
| 1027 | if (!sw->total_hw_samples_mixed) { |
| 1028 | sw->empty = true; |
| 1029 | } |
| 1030 | } |
| 1031 | } |
| 1032 | } |
| 1033 | |
| 1034 | static size_t audio_pcm_hw_run_in(HWVoiceIn *hw, size_t samples) |
| 1035 | { |
| 1036 | AudioMixengBackendClass *k = AUDIO_MIXENG_BACKEND_GET_CLASS(hw->s); |
| 1037 | size_t conv = 0; |
| 1038 | |
| 1039 | if (k->run_buffer_in) { |
| 1040 | k->run_buffer_in(hw); |
| 1041 | } |
| 1042 | |
| 1043 | while (samples) { |
| 1044 | size_t proc; |
| 1045 | size_t size = samples * hw->info.bytes_per_frame; |
| 1046 | void *buf = k->get_buffer_in(hw, &size); |
| 1047 | |
| 1048 | assert(size % hw->info.bytes_per_frame == 0); |
| 1049 | if (size == 0) { |
| 1050 | break; |
| 1051 | } |
| 1052 | |
| 1053 | proc = audio_pcm_hw_conv_in(hw, buf, size / hw->info.bytes_per_frame); |
| 1054 | |
| 1055 | samples -= proc; |
| 1056 | conv += proc; |
| 1057 | k->put_buffer_in(hw, buf, proc * hw->info.bytes_per_frame); |
| 1058 | } |
| 1059 | |
| 1060 | return conv; |
| 1061 | } |
| 1062 | |
| 1063 | static void audio_run_in(AudioMixengBackend *s) |
| 1064 | { |
| 1065 | HWVoiceIn *hw = NULL; |
| 1066 | |
| 1067 | if (!audio_get_pdo_in(s->dev)->mixing_engine) { |
| 1068 | while ((hw = audio_pcm_hw_find_any_enabled_in(s, hw))) { |
| 1069 | /* there is exactly 1 sw for each hw with no mixeng */ |
| 1070 | SWVoiceIn *sw = hw->sw_head.lh_first; |
| 1071 | if (sw->active) { |
| 1072 | sw->callback.fn(sw->callback.opaque, INT_MAX); |
| 1073 | } |
| 1074 | } |
| 1075 | return; |
| 1076 | } |
| 1077 | |
| 1078 | while ((hw = audio_pcm_hw_find_any_enabled_in(s, hw))) { |
| 1079 | SWVoiceIn *sw; |
| 1080 | size_t captured = 0, min; |
| 1081 | int pos; |
| 1082 | |
| 1083 | if (replay_mode != REPLAY_MODE_PLAY) { |
| 1084 | captured = audio_pcm_hw_run_in( |
| 1085 | hw, hw->conv_buf.size - audio_pcm_hw_get_live_in(hw)); |
| 1086 | } |
| 1087 | |
| 1088 | replay_audio_in_start(&captured); |
| 1089 | assert(captured <= hw->conv_buf.size); |
| 1090 | if (replay_mode == REPLAY_MODE_PLAY) { |
| 1091 | hw->conv_buf.pos = (hw->conv_buf.pos + captured) % hw->conv_buf.size; |
| 1092 | } |
| 1093 | for (pos = (hw->conv_buf.pos - captured + hw->conv_buf.size) % hw->conv_buf.size; |
| 1094 | pos != hw->conv_buf.pos; |
| 1095 | pos = (pos + 1) % hw->conv_buf.size) { |
| 1096 | uint64_t left, right; |
| 1097 | |
| 1098 | if (replay_mode == REPLAY_MODE_RECORD) { |
| 1099 | audio_sample_to_uint64(hw->conv_buf.buffer, pos, &left, &right); |
| 1100 | } |
| 1101 | replay_audio_in_sample_lr(&left, &right); |
| 1102 | if (replay_mode == REPLAY_MODE_PLAY) { |
| 1103 | audio_sample_from_uint64(hw->conv_buf.buffer, pos, left, right); |
| 1104 | } |
| 1105 | } |
| 1106 | replay_audio_in_finish(); |
| 1107 | |
| 1108 | min = audio_pcm_hw_find_min_in (hw); |
| 1109 | hw->total_samples_captured += captured - min; |
| 1110 | |
| 1111 | for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) { |
| 1112 | sw->total_hw_samples_acquired -= min; |
| 1113 | |
| 1114 | if (sw->active) { |
| 1115 | size_t sw_avail = audio_get_avail(sw); |
| 1116 | size_t avail; |
| 1117 | |
| 1118 | avail = st_rate_frames_out(sw->rate, sw_avail); |
| 1119 | if (avail > 0) { |
| 1120 | avail = MIN(avail, sw->resample_buf.size); |
| 1121 | sw->callback.fn(sw->callback.opaque, |
| 1122 | avail * sw->info.bytes_per_frame); |
| 1123 | } |
| 1124 | } |
| 1125 | } |
| 1126 | } |
| 1127 | } |
| 1128 | |
| 1129 | static void audio_run_capture(AudioMixengBackend *s) |
| 1130 | { |
| 1131 | CaptureVoiceOut *cap; |
| 1132 | |
| 1133 | for (cap = s->cap_head.lh_first; cap; cap = cap->entries.le_next) { |
| 1134 | size_t live, rpos, captured; |
| 1135 | HWVoiceOut *hw = &cap->hw; |
| 1136 | SWVoiceOut *sw; |
| 1137 | |
| 1138 | captured = live = audio_pcm_hw_get_live_out (hw, NULL); |
| 1139 | rpos = hw->mix_buf.pos; |
| 1140 | while (live) { |
| 1141 | size_t left = hw->mix_buf.size - rpos; |
| 1142 | size_t to_capture = MIN(live, left); |
| 1143 | struct st_sample *src; |
| 1144 | struct capture_callback *cb; |
| 1145 | |
| 1146 | src = hw->mix_buf.buffer + rpos; |
| 1147 | hw->clip (cap->buf, src, to_capture); |
| 1148 | mixeng_clear (src, to_capture); |
| 1149 | |
| 1150 | for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) { |
| 1151 | cb->ops.capture (cb->opaque, cap->buf, |
| 1152 | to_capture * hw->info.bytes_per_frame); |
| 1153 | } |
| 1154 | rpos = (rpos + to_capture) % hw->mix_buf.size; |
| 1155 | live -= to_capture; |
| 1156 | } |
| 1157 | hw->mix_buf.pos = rpos; |
| 1158 | |
| 1159 | for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) { |
| 1160 | if (!sw->active && sw->empty) { |
| 1161 | continue; |
| 1162 | } |
| 1163 | |
| 1164 | if (captured > sw->total_hw_samples_mixed) { |
| 1165 | audio_bug("captured=%zu sw->total_hw_samples_mixed=%zu", |
| 1166 | captured, sw->total_hw_samples_mixed); |
| 1167 | captured = sw->total_hw_samples_mixed; |
| 1168 | } |
| 1169 | |
| 1170 | sw->total_hw_samples_mixed -= captured; |
| 1171 | sw->empty = sw->total_hw_samples_mixed == 0; |
| 1172 | } |
| 1173 | } |
| 1174 | } |
| 1175 | |
| 1176 | void audio_run(AudioMixengBackend *s, const char *msg) |
| 1177 | { |
| 1178 | audio_run_out(s); |
| 1179 | audio_run_in(s); |
| 1180 | audio_run_capture(s); |
| 1181 | |
| 1182 | if (trace_event_get_state(TRACE_AUDIO_RUN_POLL)) { |
| 1183 | /* Convert seconds to microseconds for trace event */ |
| 1184 | int64_t elapsed_us = g_timer_elapsed(s->run_timer, NULL) * MICROSECONDS_PER_SECOND; |
| 1185 | trace_audio_run_poll(msg, elapsed_us); |
| 1186 | g_timer_start(s->run_timer); |
| 1187 | } |
| 1188 | } |
| 1189 | |
| 1190 | void audio_generic_initialize_buffer_in(HWVoiceIn *hw) |
| 1191 | { |
| 1192 | g_free(hw->buf_emul); |
| 1193 | hw->size_emul = hw->samples * hw->info.bytes_per_frame; |
| 1194 | hw->buf_emul = g_malloc(hw->size_emul); |
| 1195 | hw->pos_emul = hw->pending_emul = 0; |
| 1196 | } |
| 1197 | |
| 1198 | void audio_generic_run_buffer_in(HWVoiceIn *hw) |
| 1199 | { |
| 1200 | AudioMixengBackendClass *k = AUDIO_MIXENG_BACKEND_GET_CLASS(hw->s); |
| 1201 | |
| 1202 | if (unlikely(!hw->buf_emul)) { |
| 1203 | audio_generic_initialize_buffer_in(hw); |
| 1204 | } |
| 1205 | |
| 1206 | while (hw->pending_emul < hw->size_emul) { |
| 1207 | size_t read_len = MIN(hw->size_emul - hw->pos_emul, |
| 1208 | hw->size_emul - hw->pending_emul); |
| 1209 | size_t read = k->read(hw, hw->buf_emul + hw->pos_emul, read_len); |
| 1210 | hw->pending_emul += read; |
| 1211 | hw->pos_emul = (hw->pos_emul + read) % hw->size_emul; |
| 1212 | if (read < read_len) { |
| 1213 | break; |
| 1214 | } |
| 1215 | } |
| 1216 | } |
| 1217 | |
| 1218 | void *audio_generic_get_buffer_in(HWVoiceIn *hw, size_t *size) |
| 1219 | { |
| 1220 | size_t start; |
| 1221 | |
| 1222 | start = audio_ring_posb(hw->pos_emul, hw->pending_emul, hw->size_emul); |
| 1223 | assert(start < hw->size_emul); |
| 1224 | |
| 1225 | *size = MIN(*size, hw->pending_emul); |
| 1226 | *size = MIN(*size, hw->size_emul - start); |
| 1227 | return hw->buf_emul + start; |
| 1228 | } |
| 1229 | |
| 1230 | void audio_generic_put_buffer_in(HWVoiceIn *hw, void *buf, size_t size) |
| 1231 | { |
| 1232 | assert(size <= hw->pending_emul); |
| 1233 | hw->pending_emul -= size; |
| 1234 | } |
| 1235 | |
| 1236 | void audio_generic_initialize_buffer_out(HWVoiceOut *hw) |
| 1237 | { |
| 1238 | g_free(hw->buf_emul); |
| 1239 | hw->size_emul = hw->samples * hw->info.bytes_per_frame; |
| 1240 | hw->buf_emul = g_malloc(hw->size_emul); |
| 1241 | hw->pos_emul = hw->pending_emul = 0; |
| 1242 | } |
| 1243 | |
| 1244 | size_t audio_generic_buffer_get_free(HWVoiceOut *hw) |
| 1245 | { |
| 1246 | if (hw->buf_emul) { |
| 1247 | return hw->size_emul - hw->pending_emul; |
| 1248 | } else { |
| 1249 | return hw->samples * hw->info.bytes_per_frame; |
| 1250 | } |
| 1251 | } |
| 1252 | |
| 1253 | void audio_generic_run_buffer_out(HWVoiceOut *hw) |
| 1254 | { |
| 1255 | AudioMixengBackendClass *k = AUDIO_MIXENG_BACKEND_GET_CLASS(hw->s); |
| 1256 | |
| 1257 | while (hw->pending_emul) { |
| 1258 | size_t write_len, written, start; |
| 1259 | |
| 1260 | start = audio_ring_posb(hw->pos_emul, hw->pending_emul, hw->size_emul); |
| 1261 | assert(start < hw->size_emul); |
| 1262 | |
| 1263 | write_len = MIN(hw->pending_emul, hw->size_emul - start); |
| 1264 | |
| 1265 | written = k->write(hw, hw->buf_emul + start, write_len); |
| 1266 | hw->pending_emul -= written; |
| 1267 | |
| 1268 | if (written < write_len) { |
| 1269 | break; |
| 1270 | } |
| 1271 | } |
| 1272 | } |
| 1273 | |
| 1274 | void *audio_generic_get_buffer_out(HWVoiceOut *hw, size_t *size) |
| 1275 | { |
| 1276 | if (unlikely(!hw->buf_emul)) { |
| 1277 | audio_generic_initialize_buffer_out(hw); |
| 1278 | } |
| 1279 | |
| 1280 | *size = MIN(hw->size_emul - hw->pending_emul, |
| 1281 | hw->size_emul - hw->pos_emul); |
| 1282 | return hw->buf_emul + hw->pos_emul; |
| 1283 | } |
| 1284 | |
| 1285 | size_t audio_generic_put_buffer_out(HWVoiceOut *hw, void *buf, size_t size) |
| 1286 | { |
| 1287 | assert(buf == hw->buf_emul + hw->pos_emul && |
| 1288 | size + hw->pending_emul <= hw->size_emul); |
| 1289 | |
| 1290 | hw->pending_emul += size; |
| 1291 | hw->pos_emul = (hw->pos_emul + size) % hw->size_emul; |
| 1292 | |
| 1293 | return size; |
| 1294 | } |
| 1295 | |
| 1296 | size_t audio_generic_write(HWVoiceOut *hw, void *buf, size_t size) |
| 1297 | { |
| 1298 | AudioMixengBackendClass *k = AUDIO_MIXENG_BACKEND_GET_CLASS(hw->s); |
| 1299 | size_t total = 0; |
| 1300 | |
| 1301 | if (k->buffer_get_free) { |
| 1302 | size_t free = k->buffer_get_free(hw); |
| 1303 | |
| 1304 | size = MIN(size, free); |
| 1305 | } |
| 1306 | |
| 1307 | while (total < size) { |
| 1308 | size_t dst_size = size - total; |
| 1309 | size_t copy_size, proc; |
| 1310 | void *dst = k->get_buffer_out(hw, &dst_size); |
| 1311 | |
| 1312 | if (dst_size == 0) { |
| 1313 | break; |
| 1314 | } |
| 1315 | |
| 1316 | copy_size = MIN(size - total, dst_size); |
| 1317 | if (dst) { |
| 1318 | memcpy(dst, (char *)buf + total, copy_size); |
| 1319 | } |
| 1320 | proc = k->put_buffer_out(hw, dst, copy_size); |
| 1321 | total += proc; |
| 1322 | |
| 1323 | if (proc == 0 || proc < copy_size) { |
| 1324 | break; |
| 1325 | } |
| 1326 | } |
| 1327 | |
| 1328 | return total; |
| 1329 | } |
| 1330 | |
| 1331 | size_t audio_generic_read(HWVoiceIn *hw, void *buf, size_t size) |
| 1332 | { |
| 1333 | AudioMixengBackendClass *k = AUDIO_MIXENG_BACKEND_GET_CLASS(hw->s); |
| 1334 | size_t total = 0; |
| 1335 | |
| 1336 | if (k->run_buffer_in) { |
| 1337 | k->run_buffer_in(hw); |
| 1338 | } |
| 1339 | |
| 1340 | while (total < size) { |
| 1341 | size_t src_size = size - total; |
| 1342 | void *src = k->get_buffer_in(hw, &src_size); |
| 1343 | |
| 1344 | if (src_size == 0) { |
| 1345 | break; |
| 1346 | } |
| 1347 | |
| 1348 | memcpy((char *)buf + total, src, src_size); |
| 1349 | k->put_buffer_in(hw, src, src_size); |
| 1350 | total += src_size; |
| 1351 | } |
| 1352 | |
| 1353 | return total; |
| 1354 | } |
| 1355 | |
| 1356 | static bool audio_mixeng_backend_realize(AudioBackend *abe, |
| 1357 | Audiodev *dev, Error **errp) |
| 1358 | { |
| 1359 | AudioMixengBackend *be = AUDIO_MIXENG_BACKEND(abe); |
| 1360 | AudioMixengBackendClass *k = AUDIO_MIXENG_BACKEND_GET_CLASS(be); |
| 1361 | |
| 1362 | be->dev = dev; |
| 1363 | if (!k->get_buffer_in) { |
| 1364 | k->get_buffer_in = audio_generic_get_buffer_in; |
| 1365 | k->put_buffer_in = audio_generic_put_buffer_in; |
| 1366 | } |
| 1367 | if (!k->get_buffer_out) { |
| 1368 | k->get_buffer_out = audio_generic_get_buffer_out; |
| 1369 | k->put_buffer_out = audio_generic_put_buffer_out; |
| 1370 | } |
| 1371 | |
| 1372 | audio_init_nb_voices_out(be, k, 1); |
| 1373 | audio_init_nb_voices_in(be, k, 0); |
| 1374 | |
| 1375 | if (be->dev->timer_period <= 0) { |
| 1376 | be->period_ticks = 1; |
| 1377 | } else { |
| 1378 | be->period_ticks = be->dev->timer_period * (int64_t)SCALE_US; |
| 1379 | } |
| 1380 | |
| 1381 | return true; |
| 1382 | } |
| 1383 | |
| 1384 | static void audio_vm_change_state_handler (void *opaque, bool running, |
| 1385 | RunState state) |
| 1386 | { |
| 1387 | AudioMixengBackend *s = opaque; |
| 1388 | AudioMixengBackendClass *k = AUDIO_MIXENG_BACKEND_GET_CLASS(s); |
| 1389 | HWVoiceOut *hwo = NULL; |
| 1390 | HWVoiceIn *hwi = NULL; |
| 1391 | |
| 1392 | while ((hwo = audio_pcm_hw_find_any_enabled_out(s, hwo))) { |
| 1393 | if (k->enable_out) { |
| 1394 | k->enable_out(hwo, running); |
| 1395 | } |
| 1396 | } |
| 1397 | |
| 1398 | while ((hwi = audio_pcm_hw_find_any_enabled_in(s, hwi))) { |
| 1399 | if (k->enable_in) { |
| 1400 | k->enable_in(hwi, running); |
| 1401 | } |
| 1402 | } |
| 1403 | audio_reset_timer (s); |
| 1404 | } |
| 1405 | |
| 1406 | static const VMStateDescription vmstate_audio; |
| 1407 | |
| 1408 | static const char *audio_mixeng_backend_get_id(AudioBackend *be) |
| 1409 | { |
| 1410 | return AUDIO_MIXENG_BACKEND(be)->dev->id; |
| 1411 | } |
| 1412 | |
| 1413 | static CaptureVoiceOut *audio_mixeng_backend_add_capture( |
| 1414 | AudioBackend *be, |
| 1415 | const struct audsettings *as, |
| 1416 | const struct audio_capture_ops *ops, |
| 1417 | void *cb_opaque); |
| 1418 | |
| 1419 | static void audio_mixeng_backend_del_capture( |
| 1420 | AudioBackend *be, |
| 1421 | CaptureVoiceOut *cap, |
| 1422 | void *cb_opaque); |
| 1423 | |
| 1424 | static void audio_mixeng_backend_set_volume_out(AudioBackend *be, SWVoiceOut *sw, |
| 1425 | Volume *vol); |
| 1426 | static void audio_mixeng_backend_set_volume_in(AudioBackend *be, SWVoiceIn *sw, |
| 1427 | Volume *vol); |
| 1428 | |
| 1429 | static void audio_mixeng_backend_class_init(ObjectClass *klass, const void *data) |
| 1430 | { |
| 1431 | AudioBackendClass *be = AUDIO_BACKEND_CLASS(klass); |
| 1432 | |
| 1433 | be->realize = audio_mixeng_backend_realize; |
| 1434 | be->get_id = audio_mixeng_backend_get_id; |
| 1435 | be->open_in = audio_mixeng_backend_open_in; |
| 1436 | be->open_out = audio_mixeng_backend_open_out; |
| 1437 | be->close_in = audio_mixeng_backend_close_in; |
| 1438 | be->close_out = audio_mixeng_backend_close_out; |
| 1439 | be->is_active_out = audio_mixeng_backend_is_active_out; |
| 1440 | be->is_active_in = audio_mixeng_backend_is_active_in; |
| 1441 | be->set_active_out = audio_mixeng_backend_set_active_out; |
| 1442 | be->set_active_in = audio_mixeng_backend_set_active_in; |
| 1443 | be->set_volume_out = audio_mixeng_backend_set_volume_out; |
| 1444 | be->set_volume_in = audio_mixeng_backend_set_volume_in; |
| 1445 | be->read = audio_mixeng_backend_read; |
| 1446 | be->write = audio_mixeng_backend_write; |
| 1447 | be->get_buffer_size_out = audio_mixeng_backend_get_buffer_size_out; |
| 1448 | be->add_capture = audio_mixeng_backend_add_capture; |
| 1449 | be->del_capture = audio_mixeng_backend_del_capture; |
| 1450 | } |
| 1451 | |
| 1452 | static void audio_mixeng_backend_init(Object *obj) |
| 1453 | { |
| 1454 | AudioMixengBackend *s = AUDIO_MIXENG_BACKEND(obj); |
| 1455 | |
| 1456 | QLIST_INIT(&s->hw_head_out); |
| 1457 | QLIST_INIT(&s->hw_head_in); |
| 1458 | QLIST_INIT(&s->cap_head); |
| 1459 | s->ts = timer_new_ns(QEMU_CLOCK_VIRTUAL, audio_timer, s); |
| 1460 | s->run_timer = g_timer_new(); |
| 1461 | |
| 1462 | s->vmse = qemu_add_vm_change_state_handler(audio_vm_change_state_handler, s); |
| 1463 | assert(s->vmse != NULL); |
| 1464 | |
| 1465 | vmstate_register_any(NULL, &vmstate_audio, s); |
| 1466 | } |
| 1467 | |
| 1468 | static void audio_mixeng_backend_finalize(Object *obj) |
| 1469 | { |
| 1470 | AudioMixengBackend *s = AUDIO_MIXENG_BACKEND(obj); |
| 1471 | AudioMixengBackendClass *k = AUDIO_MIXENG_BACKEND_GET_CLASS(s); |
| 1472 | HWVoiceOut *hwo, *hwon; |
| 1473 | HWVoiceIn *hwi, *hwin; |
| 1474 | |
| 1475 | QLIST_FOREACH_SAFE(hwo, &s->hw_head_out, entries, hwon) { |
| 1476 | SWVoiceCap *sc; |
| 1477 | |
| 1478 | if (hwo->enabled && k->enable_out) { |
| 1479 | k->enable_out(hwo, false); |
| 1480 | } |
| 1481 | k->fini_out(hwo); |
| 1482 | |
| 1483 | for (sc = hwo->cap_head.lh_first; sc; sc = sc->entries.le_next) { |
| 1484 | CaptureVoiceOut *cap = sc->cap; |
| 1485 | struct capture_callback *cb; |
| 1486 | |
| 1487 | for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) { |
| 1488 | cb->ops.destroy (cb->opaque); |
| 1489 | } |
| 1490 | } |
| 1491 | QLIST_REMOVE(hwo, entries); |
| 1492 | } |
| 1493 | |
| 1494 | QLIST_FOREACH_SAFE(hwi, &s->hw_head_in, entries, hwin) { |
| 1495 | if (hwi->enabled && k->enable_in) { |
| 1496 | k->enable_in(hwi, false); |
| 1497 | } |
| 1498 | k->fini_in(hwi); |
| 1499 | QLIST_REMOVE(hwi, entries); |
| 1500 | } |
| 1501 | |
| 1502 | if (s->dev) { |
| 1503 | qapi_free_Audiodev(s->dev); |
| 1504 | s->dev = NULL; |
| 1505 | } |
| 1506 | |
| 1507 | if (s->ts) { |
| 1508 | timer_free(s->ts); |
| 1509 | s->ts = NULL; |
| 1510 | } |
| 1511 | |
| 1512 | g_clear_pointer(&s->run_timer, g_timer_destroy); |
| 1513 | |
| 1514 | if (s->vmse) { |
| 1515 | qemu_del_vm_change_state_handler(s->vmse); |
| 1516 | s->vmse = NULL; |
| 1517 | } |
| 1518 | |
| 1519 | vmstate_unregister(NULL, &vmstate_audio, s); |
| 1520 | } |
| 1521 | |
| 1522 | static bool vmstate_audio_needed(void *opaque) |
| 1523 | { |
| 1524 | /* |
| 1525 | * Never needed, this vmstate only exists in case |
| 1526 | * an old qemu sends it to us. |
| 1527 | */ |
| 1528 | return false; |
| 1529 | } |
| 1530 | |
| 1531 | static const VMStateDescription vmstate_audio = { |
| 1532 | .name = "audio", |
| 1533 | .version_id = 1, |
| 1534 | .minimum_version_id = 1, |
| 1535 | .needed = vmstate_audio_needed, |
| 1536 | .fields = (const VMStateField[]) { |
| 1537 | VMSTATE_END_OF_LIST() |
| 1538 | } |
| 1539 | }; |
| 1540 | |
| 1541 | static CaptureVoiceOut *audio_mixeng_backend_add_capture( |
| 1542 | AudioBackend *be, |
| 1543 | const struct audsettings *as, |
| 1544 | const struct audio_capture_ops *ops, |
| 1545 | void *cb_opaque) |
| 1546 | { |
| 1547 | AudioMixengBackend *s = AUDIO_MIXENG_BACKEND(be); |
| 1548 | CaptureVoiceOut *cap; |
| 1549 | struct capture_callback *cb; |
| 1550 | |
| 1551 | if (!s) { |
| 1552 | error_report("Capturing without setting an audiodev is not supported"); |
| 1553 | abort(); |
| 1554 | } |
| 1555 | |
| 1556 | if (!audio_get_pdo_out(s->dev)->mixing_engine) { |
| 1557 | error_report("audio: Can't capture with mixeng disabled"); |
| 1558 | return NULL; |
| 1559 | } |
| 1560 | |
| 1561 | if (audio_validate_settings(as)) { |
| 1562 | g_autofree char *str = audsettings_to_string(as); |
| 1563 | error_report("audio: Invalid audio settings when trying to add capture: %s", str); |
| 1564 | return NULL; |
| 1565 | } |
| 1566 | |
| 1567 | cb = g_malloc0(sizeof(*cb)); |
| 1568 | cb->ops = *ops; |
| 1569 | cb->opaque = cb_opaque; |
| 1570 | |
| 1571 | cap = audio_pcm_capture_find_specific(s, as); |
| 1572 | if (cap) { |
| 1573 | QLIST_INSERT_HEAD (&cap->cb_head, cb, entries); |
| 1574 | } else { |
| 1575 | HWVoiceOut *hw; |
| 1576 | |
| 1577 | cap = g_malloc0(sizeof(*cap)); |
| 1578 | |
| 1579 | hw = &cap->hw; |
| 1580 | hw->s = s; |
| 1581 | QLIST_INIT (&hw->sw_head); |
| 1582 | QLIST_INIT (&cap->cb_head); |
| 1583 | |
| 1584 | /* XXX find a more elegant way */ |
| 1585 | hw->samples = 4096 * 4; |
| 1586 | audio_pcm_hw_alloc_resources_out(hw); |
| 1587 | |
| 1588 | audio_pcm_init_info (&hw->info, as); |
| 1589 | |
| 1590 | cap->buf = g_malloc0_n(hw->mix_buf.size, hw->info.bytes_per_frame); |
| 1591 | |
| 1592 | if (audio_format_is_float(hw->info.af)) { |
| 1593 | hw->clip = mixeng_clip_float[hw->info.nchannels == 2] |
| 1594 | [hw->info.swap_endianness]; |
| 1595 | } else { |
| 1596 | hw->clip = mixeng_clip |
| 1597 | [hw->info.nchannels == 2] |
| 1598 | [audio_format_is_signed(hw->info.af)] |
| 1599 | [hw->info.swap_endianness] |
| 1600 | [audio_format_to_index(hw->info.af)]; |
| 1601 | } |
| 1602 | |
| 1603 | QLIST_INSERT_HEAD (&s->cap_head, cap, entries); |
| 1604 | QLIST_INSERT_HEAD (&cap->cb_head, cb, entries); |
| 1605 | |
| 1606 | QLIST_FOREACH(hw, &s->hw_head_out, entries) { |
| 1607 | audio_attach_capture (hw); |
| 1608 | } |
| 1609 | } |
| 1610 | |
| 1611 | return cap; |
| 1612 | } |
| 1613 | |
| 1614 | static void audio_mixeng_backend_del_capture( |
| 1615 | AudioBackend *be, |
| 1616 | CaptureVoiceOut *cap, |
| 1617 | void *cb_opaque) |
| 1618 | { |
| 1619 | struct capture_callback *cb; |
| 1620 | |
| 1621 | for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) { |
| 1622 | if (cb->opaque == cb_opaque) { |
| 1623 | cb->ops.destroy (cb_opaque); |
| 1624 | QLIST_REMOVE (cb, entries); |
| 1625 | g_free (cb); |
| 1626 | |
| 1627 | if (!cap->cb_head.lh_first) { |
| 1628 | SWVoiceOut *sw = cap->hw.sw_head.lh_first, *sw1; |
| 1629 | |
| 1630 | while (sw) { |
| 1631 | SWVoiceCap *sc = (SWVoiceCap *) sw; |
| 1632 | |
| 1633 | trace_audio_capture_free_sw(sw->name); |
| 1634 | g_clear_pointer(&sw->name, g_free); |
| 1635 | sw1 = sw->entries.le_next; |
| 1636 | if (sw->rate) { |
| 1637 | st_rate_stop (sw->rate); |
| 1638 | sw->rate = NULL; |
| 1639 | } |
| 1640 | QLIST_REMOVE (sw, entries); |
| 1641 | QLIST_REMOVE (sc, entries); |
| 1642 | g_free (sc); |
| 1643 | sw = sw1; |
| 1644 | } |
| 1645 | QLIST_REMOVE (cap, entries); |
| 1646 | g_free(cap->hw.mix_buf.buffer); |
| 1647 | g_free (cap->buf); |
| 1648 | g_free (cap); |
| 1649 | } |
| 1650 | return; |
| 1651 | } |
| 1652 | } |
| 1653 | } |
| 1654 | |
| 1655 | static void audio_mixeng_backend_set_volume_out(AudioBackend *be, SWVoiceOut *sw, |
| 1656 | Volume *vol) |
| 1657 | { |
| 1658 | if (sw) { |
| 1659 | HWVoiceOut *hw = sw->hw; |
| 1660 | AudioMixengBackendClass *k = AUDIO_MIXENG_BACKEND_GET_CLASS(hw->s); |
| 1661 | |
| 1662 | sw->vol.mute = vol->mute; |
| 1663 | sw->vol.l = nominal_volume.l * vol->vol[0] / 255; |
| 1664 | sw->vol.r = nominal_volume.r * vol->vol[vol->channels > 1 ? 1 : 0] / |
| 1665 | 255; |
| 1666 | |
| 1667 | if (k->volume_out) { |
| 1668 | k->volume_out(hw, vol); |
| 1669 | } |
| 1670 | } |
| 1671 | } |
| 1672 | |
| 1673 | static void audio_mixeng_backend_set_volume_in(AudioBackend *be, SWVoiceIn *sw, |
| 1674 | Volume *vol) |
| 1675 | { |
| 1676 | if (sw) { |
| 1677 | HWVoiceIn *hw = sw->hw; |
| 1678 | AudioMixengBackendClass *k = AUDIO_MIXENG_BACKEND_GET_CLASS(hw->s); |
| 1679 | |
| 1680 | sw->vol.mute = vol->mute; |
| 1681 | sw->vol.l = nominal_volume.l * vol->vol[0] / 255; |
| 1682 | sw->vol.r = nominal_volume.r * vol->vol[vol->channels > 1 ? 1 : 0] / |
| 1683 | 255; |
| 1684 | |
| 1685 | if (k->volume_in) { |
| 1686 | k->volume_in(hw, vol); |
| 1687 | } |
| 1688 | } |
| 1689 | } |
| 1690 | |
| 1691 | audsettings audiodev_to_audsettings(AudiodevPerDirectionOptions *pdo) |
| 1692 | { |
| 1693 | return (audsettings) { |
| 1694 | .freq = pdo->frequency, |
| 1695 | .nchannels = pdo->channels, |
| 1696 | .fmt = pdo->format, |
| 1697 | .big_endian = HOST_BIG_ENDIAN, |
| 1698 | }; |
| 1699 | } |
| 1700 | |
| 1701 | /* frames = freq * usec / 1e6 */ |
| 1702 | int audio_buffer_frames(AudiodevPerDirectionOptions *pdo, |
| 1703 | audsettings *as, int def_usecs) |
| 1704 | { |
| 1705 | uint64_t usecs = pdo->has_buffer_length ? pdo->buffer_length : def_usecs; |
| 1706 | return (as->freq * usecs + 500000) / 1000000; |
| 1707 | } |
| 1708 | |
| 1709 | /* samples = channels * frames = channels * freq * usec / 1e6 */ |
| 1710 | int audio_buffer_samples(AudiodevPerDirectionOptions *pdo, |
| 1711 | audsettings *as, int def_usecs) |
| 1712 | { |
| 1713 | return as->nchannels * audio_buffer_frames(pdo, as, def_usecs); |
| 1714 | } |
| 1715 | |
| 1716 | /* |
| 1717 | * bytes = bytes_per_sample * samples = |
| 1718 | * bytes_per_sample * channels * freq * usec / 1e6 |
| 1719 | */ |
| 1720 | int audio_buffer_bytes(AudiodevPerDirectionOptions *pdo, |
| 1721 | audsettings *as, int def_usecs) |
| 1722 | { |
| 1723 | return audio_buffer_samples(pdo, as, def_usecs) * audio_format_bits(as->fmt) / 8; |
| 1724 | } |
| 1725 | |
| 1726 | void audio_rate_start(RateCtl *rate) |
| 1727 | { |
| 1728 | memset(rate, 0, sizeof(RateCtl)); |
| 1729 | rate->start_ticks = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); |
| 1730 | } |
| 1731 | |
| 1732 | size_t audio_rate_peek_bytes(RateCtl *rate, struct audio_pcm_info *info) |
| 1733 | { |
| 1734 | int64_t now; |
| 1735 | int64_t ticks; |
| 1736 | int64_t bytes; |
| 1737 | int64_t frames; |
| 1738 | |
| 1739 | now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); |
| 1740 | ticks = now - rate->start_ticks; |
| 1741 | bytes = muldiv64(ticks, info->bytes_per_second, NANOSECONDS_PER_SECOND); |
| 1742 | frames = (bytes - rate->bytes_sent) / info->bytes_per_frame; |
| 1743 | rate->peeked_frames = frames; |
| 1744 | |
| 1745 | return frames < 0 ? 0 : frames * info->bytes_per_frame; |
| 1746 | } |
| 1747 | |
| 1748 | void audio_rate_add_bytes(RateCtl *rate, size_t bytes_used) |
| 1749 | { |
| 1750 | if (rate->peeked_frames < 0 || rate->peeked_frames > 65536) { |
| 1751 | trace_audio_rate_reset(rate->peeked_frames); |
| 1752 | audio_rate_start(rate); |
| 1753 | } |
| 1754 | |
| 1755 | rate->bytes_sent += bytes_used; |
| 1756 | } |
| 1757 | |
| 1758 | size_t audio_rate_get_bytes(RateCtl *rate, struct audio_pcm_info *info, |
| 1759 | size_t bytes_avail) |
| 1760 | { |
| 1761 | size_t bytes; |
| 1762 | |
| 1763 | bytes = audio_rate_peek_bytes(rate, info); |
| 1764 | bytes = MIN(bytes, bytes_avail); |
| 1765 | audio_rate_add_bytes(rate, bytes); |
| 1766 | |
| 1767 | return bytes; |
| 1768 | } |
| 1769 | |
| 1770 | static const TypeInfo audio_types[] = { |
| 1771 | { |
| 1772 | .name = TYPE_AUDIO_MIXENG_BACKEND, |
| 1773 | .parent = TYPE_AUDIO_BACKEND, |
| 1774 | .instance_size = sizeof(AudioMixengBackend), |
| 1775 | .instance_init = audio_mixeng_backend_init, |
| 1776 | .instance_finalize = audio_mixeng_backend_finalize, |
| 1777 | .class_size = sizeof(AudioMixengBackendClass), |
| 1778 | .class_init = audio_mixeng_backend_class_init, |
| 1779 | }, |
| 1780 | }; |
| 1781 | |
| 1782 | DEFINE_TYPES(audio_types) |