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Commit | Line | Data |
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c2d3d1c2 | 1 | /* |
20c51248 | 2 | * QEMU PipeWire audio driver |
c2d3d1c2 DB |
3 | * |
4 | * Copyright (c) 2023 Red Hat Inc. | |
5 | * | |
6 | * Author: Dorinda Bassey <dbassey@redhat.com> | |
7 | * | |
8 | * SPDX-License-Identifier: GPL-2.0-or-later | |
9 | */ | |
10 | ||
11 | #include "qemu/osdep.h" | |
12 | #include "qemu/module.h" | |
13 | #include "audio.h" | |
c2d3d1c2 | 14 | #include "qemu/error-report.h" |
f6061733 | 15 | #include "qapi/error.h" |
c2d3d1c2 DB |
16 | #include <spa/param/audio/format-utils.h> |
17 | #include <spa/utils/ringbuffer.h> | |
18 | #include <spa/utils/result.h> | |
19 | #include <spa/param/props.h> | |
20 | ||
21 | #include <pipewire/pipewire.h> | |
22 | #include "trace.h" | |
23 | ||
24 | #define AUDIO_CAP "pipewire" | |
25 | #define RINGBUFFER_SIZE (1u << 22) | |
26 | #define RINGBUFFER_MASK (RINGBUFFER_SIZE - 1) | |
27 | ||
28 | #include "audio_int.h" | |
29 | ||
30 | typedef struct pwvolume { | |
31 | uint32_t channels; | |
32 | float values[SPA_AUDIO_MAX_CHANNELS]; | |
33 | } pwvolume; | |
34 | ||
35 | typedef struct pwaudio { | |
36 | Audiodev *dev; | |
37 | struct pw_thread_loop *thread_loop; | |
38 | struct pw_context *context; | |
39 | ||
40 | struct pw_core *core; | |
41 | struct spa_hook core_listener; | |
42 | int last_seq, pending_seq, error; | |
43 | } pwaudio; | |
44 | ||
45 | typedef struct PWVoice { | |
46 | pwaudio *g; | |
47 | struct pw_stream *stream; | |
48 | struct spa_hook stream_listener; | |
49 | struct spa_audio_info_raw info; | |
50 | uint32_t highwater_mark; | |
51 | uint32_t frame_size, req; | |
52 | struct spa_ringbuffer ring; | |
53 | uint8_t buffer[RINGBUFFER_SIZE]; | |
54 | ||
55 | pwvolume volume; | |
56 | bool muted; | |
57 | } PWVoice; | |
58 | ||
59 | typedef struct PWVoiceOut { | |
60 | HWVoiceOut hw; | |
61 | PWVoice v; | |
62 | } PWVoiceOut; | |
63 | ||
64 | typedef struct PWVoiceIn { | |
65 | HWVoiceIn hw; | |
66 | PWVoice v; | |
67 | } PWVoiceIn; | |
68 | ||
92fd7868 MAL |
69 | #define PW_VOICE_IN(v) ((PWVoiceIn *)v) |
70 | #define PW_VOICE_OUT(v) ((PWVoiceOut *)v) | |
71 | ||
c2d3d1c2 DB |
72 | static void |
73 | stream_destroy(void *data) | |
74 | { | |
75 | PWVoice *v = (PWVoice *) data; | |
76 | spa_hook_remove(&v->stream_listener); | |
77 | v->stream = NULL; | |
78 | } | |
79 | ||
80 | /* output data processing function to read stuffs from the buffer */ | |
81 | static void | |
82 | playback_on_process(void *data) | |
83 | { | |
84 | PWVoice *v = data; | |
85 | void *p; | |
86 | struct pw_buffer *b; | |
87 | struct spa_buffer *buf; | |
88 | uint32_t req, index, n_bytes; | |
89 | int32_t avail; | |
90 | ||
91 | assert(v->stream); | |
92 | ||
93 | /* obtain a buffer to read from */ | |
94 | b = pw_stream_dequeue_buffer(v->stream); | |
95 | if (b == NULL) { | |
96 | error_report("out of buffers: %s", strerror(errno)); | |
97 | return; | |
98 | } | |
99 | ||
100 | buf = b->buffer; | |
101 | p = buf->datas[0].data; | |
102 | if (p == NULL) { | |
103 | return; | |
104 | } | |
105 | /* calculate the total no of bytes to read data from buffer */ | |
106 | req = b->requested * v->frame_size; | |
107 | if (req == 0) { | |
108 | req = v->req; | |
109 | } | |
110 | n_bytes = SPA_MIN(req, buf->datas[0].maxsize); | |
111 | ||
112 | /* get no of available bytes to read data from buffer */ | |
113 | avail = spa_ringbuffer_get_read_index(&v->ring, &index); | |
114 | ||
115 | if (avail <= 0) { | |
116 | PWVoiceOut *vo = container_of(data, PWVoiceOut, v); | |
117 | audio_pcm_info_clear_buf(&vo->hw.info, p, n_bytes / v->frame_size); | |
118 | } else { | |
119 | if ((uint32_t) avail < n_bytes) { | |
120 | /* | |
121 | * PipeWire immediately calls this callback again if we provide | |
122 | * less than n_bytes. Then audio_pcm_info_clear_buf() fills the | |
123 | * rest of the buffer with silence. | |
124 | */ | |
125 | n_bytes = avail; | |
126 | } | |
127 | ||
128 | spa_ringbuffer_read_data(&v->ring, | |
129 | v->buffer, RINGBUFFER_SIZE, | |
130 | index & RINGBUFFER_MASK, p, n_bytes); | |
131 | ||
132 | index += n_bytes; | |
133 | spa_ringbuffer_read_update(&v->ring, index); | |
134 | ||
135 | } | |
136 | buf->datas[0].chunk->offset = 0; | |
137 | buf->datas[0].chunk->stride = v->frame_size; | |
138 | buf->datas[0].chunk->size = n_bytes; | |
139 | ||
140 | /* queue the buffer for playback */ | |
141 | pw_stream_queue_buffer(v->stream, b); | |
142 | } | |
143 | ||
144 | /* output data processing function to generate stuffs in the buffer */ | |
145 | static void | |
146 | capture_on_process(void *data) | |
147 | { | |
148 | PWVoice *v = (PWVoice *) data; | |
149 | void *p; | |
150 | struct pw_buffer *b; | |
151 | struct spa_buffer *buf; | |
152 | int32_t filled; | |
153 | uint32_t index, offs, n_bytes; | |
154 | ||
155 | assert(v->stream); | |
156 | ||
157 | /* obtain a buffer */ | |
158 | b = pw_stream_dequeue_buffer(v->stream); | |
159 | if (b == NULL) { | |
160 | error_report("out of buffers: %s", strerror(errno)); | |
161 | return; | |
162 | } | |
163 | ||
164 | /* Write data into buffer */ | |
165 | buf = b->buffer; | |
166 | p = buf->datas[0].data; | |
167 | if (p == NULL) { | |
168 | return; | |
169 | } | |
170 | offs = SPA_MIN(buf->datas[0].chunk->offset, buf->datas[0].maxsize); | |
171 | n_bytes = SPA_MIN(buf->datas[0].chunk->size, buf->datas[0].maxsize - offs); | |
172 | ||
173 | filled = spa_ringbuffer_get_write_index(&v->ring, &index); | |
174 | ||
175 | ||
176 | if (filled < 0) { | |
177 | error_report("%p: underrun write:%u filled:%d", p, index, filled); | |
178 | } else { | |
179 | if ((uint32_t) filled + n_bytes > RINGBUFFER_SIZE) { | |
180 | error_report("%p: overrun write:%u filled:%d + size:%u > max:%u", | |
181 | p, index, filled, n_bytes, RINGBUFFER_SIZE); | |
182 | } | |
183 | } | |
184 | spa_ringbuffer_write_data(&v->ring, | |
185 | v->buffer, RINGBUFFER_SIZE, | |
186 | index & RINGBUFFER_MASK, | |
187 | SPA_PTROFF(p, offs, void), n_bytes); | |
188 | index += n_bytes; | |
189 | spa_ringbuffer_write_update(&v->ring, index); | |
190 | ||
191 | /* queue the buffer for playback */ | |
192 | pw_stream_queue_buffer(v->stream, b); | |
193 | } | |
194 | ||
195 | static void | |
196 | on_stream_state_changed(void *data, enum pw_stream_state old, | |
197 | enum pw_stream_state state, const char *error) | |
198 | { | |
199 | PWVoice *v = (PWVoice *) data; | |
200 | ||
201 | trace_pw_state_changed(pw_stream_get_node_id(v->stream), | |
202 | pw_stream_state_as_string(state)); | |
c2d3d1c2 DB |
203 | } |
204 | ||
205 | static const struct pw_stream_events capture_stream_events = { | |
206 | PW_VERSION_STREAM_EVENTS, | |
207 | .destroy = stream_destroy, | |
208 | .state_changed = on_stream_state_changed, | |
209 | .process = capture_on_process | |
210 | }; | |
211 | ||
212 | static const struct pw_stream_events playback_stream_events = { | |
213 | PW_VERSION_STREAM_EVENTS, | |
214 | .destroy = stream_destroy, | |
215 | .state_changed = on_stream_state_changed, | |
216 | .process = playback_on_process | |
217 | }; | |
218 | ||
219 | static size_t | |
220 | qpw_read(HWVoiceIn *hw, void *data, size_t len) | |
221 | { | |
222 | PWVoiceIn *pw = (PWVoiceIn *) hw; | |
223 | PWVoice *v = &pw->v; | |
224 | pwaudio *c = v->g; | |
225 | const char *error = NULL; | |
226 | size_t l; | |
227 | int32_t avail; | |
228 | uint32_t index; | |
229 | ||
230 | pw_thread_loop_lock(c->thread_loop); | |
231 | if (pw_stream_get_state(v->stream, &error) != PW_STREAM_STATE_STREAMING) { | |
232 | /* wait for stream to become ready */ | |
233 | l = 0; | |
234 | goto done_unlock; | |
235 | } | |
236 | /* get no of available bytes to read data from buffer */ | |
237 | avail = spa_ringbuffer_get_read_index(&v->ring, &index); | |
238 | ||
239 | trace_pw_read(avail, index, len); | |
240 | ||
241 | if (avail < (int32_t) len) { | |
242 | len = avail; | |
243 | } | |
244 | ||
245 | spa_ringbuffer_read_data(&v->ring, | |
246 | v->buffer, RINGBUFFER_SIZE, | |
247 | index & RINGBUFFER_MASK, data, len); | |
248 | index += len; | |
249 | spa_ringbuffer_read_update(&v->ring, index); | |
250 | l = len; | |
251 | ||
252 | done_unlock: | |
253 | pw_thread_loop_unlock(c->thread_loop); | |
254 | return l; | |
255 | } | |
256 | ||
257 | static size_t qpw_buffer_get_free(HWVoiceOut *hw) | |
258 | { | |
259 | PWVoiceOut *pw = (PWVoiceOut *)hw; | |
260 | PWVoice *v = &pw->v; | |
261 | pwaudio *c = v->g; | |
262 | const char *error = NULL; | |
263 | int32_t filled, avail; | |
264 | uint32_t index; | |
265 | ||
266 | pw_thread_loop_lock(c->thread_loop); | |
267 | if (pw_stream_get_state(v->stream, &error) != PW_STREAM_STATE_STREAMING) { | |
268 | /* wait for stream to become ready */ | |
269 | avail = 0; | |
270 | goto done_unlock; | |
271 | } | |
272 | ||
273 | filled = spa_ringbuffer_get_write_index(&v->ring, &index); | |
274 | avail = v->highwater_mark - filled; | |
275 | ||
276 | done_unlock: | |
277 | pw_thread_loop_unlock(c->thread_loop); | |
278 | return avail; | |
279 | } | |
280 | ||
281 | static size_t | |
282 | qpw_write(HWVoiceOut *hw, void *data, size_t len) | |
283 | { | |
284 | PWVoiceOut *pw = (PWVoiceOut *) hw; | |
285 | PWVoice *v = &pw->v; | |
286 | pwaudio *c = v->g; | |
287 | const char *error = NULL; | |
288 | int32_t filled, avail; | |
289 | uint32_t index; | |
290 | ||
291 | pw_thread_loop_lock(c->thread_loop); | |
292 | if (pw_stream_get_state(v->stream, &error) != PW_STREAM_STATE_STREAMING) { | |
293 | /* wait for stream to become ready */ | |
294 | len = 0; | |
295 | goto done_unlock; | |
296 | } | |
297 | filled = spa_ringbuffer_get_write_index(&v->ring, &index); | |
298 | avail = v->highwater_mark - filled; | |
299 | ||
300 | trace_pw_write(filled, avail, index, len); | |
301 | ||
302 | if (len > avail) { | |
303 | len = avail; | |
304 | } | |
305 | ||
306 | if (filled < 0) { | |
307 | error_report("%p: underrun write:%u filled:%d", pw, index, filled); | |
308 | } else { | |
309 | if ((uint32_t) filled + len > RINGBUFFER_SIZE) { | |
310 | error_report("%p: overrun write:%u filled:%d + size:%zu > max:%u", | |
311 | pw, index, filled, len, RINGBUFFER_SIZE); | |
312 | } | |
313 | } | |
314 | ||
315 | spa_ringbuffer_write_data(&v->ring, | |
316 | v->buffer, RINGBUFFER_SIZE, | |
317 | index & RINGBUFFER_MASK, data, len); | |
318 | index += len; | |
319 | spa_ringbuffer_write_update(&v->ring, index); | |
320 | ||
321 | done_unlock: | |
322 | pw_thread_loop_unlock(c->thread_loop); | |
323 | return len; | |
324 | } | |
325 | ||
326 | static int | |
327 | audfmt_to_pw(AudioFormat fmt, int endianness) | |
328 | { | |
329 | int format; | |
330 | ||
331 | switch (fmt) { | |
332 | case AUDIO_FORMAT_S8: | |
333 | format = SPA_AUDIO_FORMAT_S8; | |
334 | break; | |
335 | case AUDIO_FORMAT_U8: | |
336 | format = SPA_AUDIO_FORMAT_U8; | |
337 | break; | |
338 | case AUDIO_FORMAT_S16: | |
339 | format = endianness ? SPA_AUDIO_FORMAT_S16_BE : SPA_AUDIO_FORMAT_S16_LE; | |
340 | break; | |
341 | case AUDIO_FORMAT_U16: | |
342 | format = endianness ? SPA_AUDIO_FORMAT_U16_BE : SPA_AUDIO_FORMAT_U16_LE; | |
343 | break; | |
344 | case AUDIO_FORMAT_S32: | |
345 | format = endianness ? SPA_AUDIO_FORMAT_S32_BE : SPA_AUDIO_FORMAT_S32_LE; | |
346 | break; | |
347 | case AUDIO_FORMAT_U32: | |
348 | format = endianness ? SPA_AUDIO_FORMAT_U32_BE : SPA_AUDIO_FORMAT_U32_LE; | |
349 | break; | |
350 | case AUDIO_FORMAT_F32: | |
351 | format = endianness ? SPA_AUDIO_FORMAT_F32_BE : SPA_AUDIO_FORMAT_F32_LE; | |
352 | break; | |
353 | default: | |
354 | dolog("Internal logic error: Bad audio format %d\n", fmt); | |
355 | format = SPA_AUDIO_FORMAT_U8; | |
356 | break; | |
357 | } | |
358 | return format; | |
359 | } | |
360 | ||
361 | static AudioFormat | |
362 | pw_to_audfmt(enum spa_audio_format fmt, int *endianness, | |
363 | uint32_t *sample_size) | |
364 | { | |
365 | switch (fmt) { | |
366 | case SPA_AUDIO_FORMAT_S8: | |
367 | *sample_size = 1; | |
368 | return AUDIO_FORMAT_S8; | |
369 | case SPA_AUDIO_FORMAT_U8: | |
370 | *sample_size = 1; | |
371 | return AUDIO_FORMAT_U8; | |
372 | case SPA_AUDIO_FORMAT_S16_BE: | |
373 | *sample_size = 2; | |
374 | *endianness = 1; | |
375 | return AUDIO_FORMAT_S16; | |
376 | case SPA_AUDIO_FORMAT_S16_LE: | |
377 | *sample_size = 2; | |
378 | *endianness = 0; | |
379 | return AUDIO_FORMAT_S16; | |
380 | case SPA_AUDIO_FORMAT_U16_BE: | |
381 | *sample_size = 2; | |
382 | *endianness = 1; | |
383 | return AUDIO_FORMAT_U16; | |
384 | case SPA_AUDIO_FORMAT_U16_LE: | |
385 | *sample_size = 2; | |
386 | *endianness = 0; | |
387 | return AUDIO_FORMAT_U16; | |
388 | case SPA_AUDIO_FORMAT_S32_BE: | |
389 | *sample_size = 4; | |
390 | *endianness = 1; | |
391 | return AUDIO_FORMAT_S32; | |
392 | case SPA_AUDIO_FORMAT_S32_LE: | |
393 | *sample_size = 4; | |
394 | *endianness = 0; | |
395 | return AUDIO_FORMAT_S32; | |
396 | case SPA_AUDIO_FORMAT_U32_BE: | |
397 | *sample_size = 4; | |
398 | *endianness = 1; | |
399 | return AUDIO_FORMAT_U32; | |
400 | case SPA_AUDIO_FORMAT_U32_LE: | |
401 | *sample_size = 4; | |
402 | *endianness = 0; | |
403 | return AUDIO_FORMAT_U32; | |
404 | case SPA_AUDIO_FORMAT_F32_BE: | |
405 | *sample_size = 4; | |
406 | *endianness = 1; | |
407 | return AUDIO_FORMAT_F32; | |
408 | case SPA_AUDIO_FORMAT_F32_LE: | |
409 | *sample_size = 4; | |
410 | *endianness = 0; | |
411 | return AUDIO_FORMAT_F32; | |
412 | default: | |
413 | *sample_size = 1; | |
414 | dolog("Internal logic error: Bad spa_audio_format %d\n", fmt); | |
415 | return AUDIO_FORMAT_U8; | |
416 | } | |
417 | } | |
418 | ||
419 | static int | |
92f69a2c MAL |
420 | qpw_stream_new(pwaudio *c, PWVoice *v, const char *stream_name, |
421 | const char *name, enum spa_direction dir) | |
c2d3d1c2 DB |
422 | { |
423 | int res; | |
424 | uint32_t n_params; | |
425 | const struct spa_pod *params[2]; | |
426 | uint8_t buffer[1024]; | |
427 | struct spa_pod_builder b; | |
428 | uint64_t buf_samples; | |
429 | struct pw_properties *props; | |
430 | ||
431 | props = pw_properties_new(NULL, NULL); | |
0c57a055 MAL |
432 | if (!props) { |
433 | error_report("Failed to create PW properties: %s", g_strerror(errno)); | |
434 | return -1; | |
435 | } | |
c2d3d1c2 DB |
436 | |
437 | /* 75% of the timer period for faster updates */ | |
438 | buf_samples = (uint64_t)v->g->dev->timer_period * v->info.rate | |
439 | * 3 / 4 / 1000000; | |
440 | pw_properties_setf(props, PW_KEY_NODE_LATENCY, "%" PRIu64 "/%u", | |
441 | buf_samples, v->info.rate); | |
442 | ||
443 | trace_pw_period(buf_samples, v->info.rate); | |
444 | if (name) { | |
445 | pw_properties_set(props, PW_KEY_TARGET_OBJECT, name); | |
446 | } | |
447 | v->stream = pw_stream_new(c->core, stream_name, props); | |
c2d3d1c2 | 448 | if (v->stream == NULL) { |
0c57a055 | 449 | error_report("Failed to create PW stream: %s", g_strerror(errno)); |
c2d3d1c2 DB |
450 | return -1; |
451 | } | |
452 | ||
453 | if (dir == SPA_DIRECTION_INPUT) { | |
454 | pw_stream_add_listener(v->stream, | |
455 | &v->stream_listener, &capture_stream_events, v); | |
456 | } else { | |
457 | pw_stream_add_listener(v->stream, | |
458 | &v->stream_listener, &playback_stream_events, v); | |
459 | } | |
460 | ||
461 | n_params = 0; | |
462 | spa_pod_builder_init(&b, buffer, sizeof(buffer)); | |
463 | params[n_params++] = spa_format_audio_raw_build(&b, | |
464 | SPA_PARAM_EnumFormat, | |
465 | &v->info); | |
466 | ||
467 | /* connect the stream to a sink or source */ | |
468 | res = pw_stream_connect(v->stream, | |
469 | dir == | |
470 | SPA_DIRECTION_INPUT ? PW_DIRECTION_INPUT : | |
471 | PW_DIRECTION_OUTPUT, PW_ID_ANY, | |
472 | PW_STREAM_FLAG_AUTOCONNECT | | |
473 | PW_STREAM_FLAG_INACTIVE | | |
474 | PW_STREAM_FLAG_MAP_BUFFERS | | |
475 | PW_STREAM_FLAG_RT_PROCESS, params, n_params); | |
476 | if (res < 0) { | |
0c57a055 | 477 | error_report("Failed to connect PW stream: %s", g_strerror(errno)); |
c2d3d1c2 DB |
478 | pw_stream_destroy(v->stream); |
479 | return -1; | |
480 | } | |
481 | ||
482 | return 0; | |
483 | } | |
484 | ||
92f69a2c MAL |
485 | static void |
486 | qpw_set_position(uint32_t channels, uint32_t position[SPA_AUDIO_MAX_CHANNELS]) | |
c2d3d1c2 | 487 | { |
92f69a2c MAL |
488 | memcpy(position, (uint32_t[SPA_AUDIO_MAX_CHANNELS]) { SPA_AUDIO_CHANNEL_UNKNOWN, }, |
489 | sizeof(uint32_t) * SPA_AUDIO_MAX_CHANNELS); | |
490 | /* | |
491 | * TODO: This currently expects the only frontend supporting more than 2 | |
492 | * channels is the usb-audio. We will need some means to set channel | |
493 | * order when a new frontend gains multi-channel support. | |
494 | */ | |
495 | switch (channels) { | |
c2d3d1c2 | 496 | case 8: |
92f69a2c MAL |
497 | position[6] = SPA_AUDIO_CHANNEL_SL; |
498 | position[7] = SPA_AUDIO_CHANNEL_SR; | |
499 | /* fallthrough */ | |
c2d3d1c2 | 500 | case 6: |
92f69a2c MAL |
501 | position[2] = SPA_AUDIO_CHANNEL_FC; |
502 | position[3] = SPA_AUDIO_CHANNEL_LFE; | |
503 | position[4] = SPA_AUDIO_CHANNEL_RL; | |
504 | position[5] = SPA_AUDIO_CHANNEL_RR; | |
505 | /* fallthrough */ | |
c2d3d1c2 | 506 | case 2: |
92f69a2c MAL |
507 | position[0] = SPA_AUDIO_CHANNEL_FL; |
508 | position[1] = SPA_AUDIO_CHANNEL_FR; | |
c2d3d1c2 DB |
509 | break; |
510 | case 1: | |
92f69a2c | 511 | position[0] = SPA_AUDIO_CHANNEL_MONO; |
c2d3d1c2 DB |
512 | break; |
513 | default: | |
92f69a2c | 514 | dolog("Internal error: unsupported channel count %d\n", channels); |
c2d3d1c2 | 515 | } |
c2d3d1c2 DB |
516 | } |
517 | ||
518 | static int | |
519 | qpw_init_out(HWVoiceOut *hw, struct audsettings *as, void *drv_opaque) | |
520 | { | |
521 | PWVoiceOut *pw = (PWVoiceOut *) hw; | |
522 | PWVoice *v = &pw->v; | |
523 | struct audsettings obt_as = *as; | |
524 | pwaudio *c = v->g = drv_opaque; | |
525 | AudiodevPipewireOptions *popts = &c->dev->u.pipewire; | |
526 | AudiodevPipewirePerDirectionOptions *ppdo = popts->out; | |
527 | int r; | |
528 | ||
529 | pw_thread_loop_lock(c->thread_loop); | |
530 | ||
531 | v->info.format = audfmt_to_pw(as->fmt, as->endianness); | |
532 | v->info.channels = as->nchannels; | |
92f69a2c | 533 | qpw_set_position(as->nchannels, v->info.position); |
c2d3d1c2 DB |
534 | v->info.rate = as->freq; |
535 | ||
536 | obt_as.fmt = | |
537 | pw_to_audfmt(v->info.format, &obt_as.endianness, &v->frame_size); | |
538 | v->frame_size *= as->nchannels; | |
539 | ||
540 | v->req = (uint64_t)c->dev->timer_period * v->info.rate | |
541 | * 1 / 2 / 1000000 * v->frame_size; | |
542 | ||
543 | /* call the function that creates a new stream for playback */ | |
544 | r = qpw_stream_new(c, v, ppdo->stream_name ? : c->dev->id, | |
545 | ppdo->name, SPA_DIRECTION_OUTPUT); | |
546 | if (r < 0) { | |
c2d3d1c2 DB |
547 | pw_thread_loop_unlock(c->thread_loop); |
548 | return -1; | |
549 | } | |
550 | ||
551 | /* report the audio format we support */ | |
552 | audio_pcm_init_info(&hw->info, &obt_as); | |
553 | ||
554 | /* report the buffer size to qemu */ | |
555 | hw->samples = audio_buffer_frames( | |
556 | qapi_AudiodevPipewirePerDirectionOptions_base(ppdo), &obt_as, 46440); | |
557 | v->highwater_mark = MIN(RINGBUFFER_SIZE, | |
558 | (ppdo->has_latency ? ppdo->latency : 46440) | |
559 | * (uint64_t)v->info.rate / 1000000 * v->frame_size); | |
560 | ||
561 | pw_thread_loop_unlock(c->thread_loop); | |
562 | return 0; | |
563 | } | |
564 | ||
565 | static int | |
566 | qpw_init_in(HWVoiceIn *hw, struct audsettings *as, void *drv_opaque) | |
567 | { | |
568 | PWVoiceIn *pw = (PWVoiceIn *) hw; | |
569 | PWVoice *v = &pw->v; | |
570 | struct audsettings obt_as = *as; | |
571 | pwaudio *c = v->g = drv_opaque; | |
572 | AudiodevPipewireOptions *popts = &c->dev->u.pipewire; | |
573 | AudiodevPipewirePerDirectionOptions *ppdo = popts->in; | |
574 | int r; | |
575 | ||
576 | pw_thread_loop_lock(c->thread_loop); | |
577 | ||
578 | v->info.format = audfmt_to_pw(as->fmt, as->endianness); | |
579 | v->info.channels = as->nchannels; | |
92f69a2c | 580 | qpw_set_position(as->nchannels, v->info.position); |
c2d3d1c2 DB |
581 | v->info.rate = as->freq; |
582 | ||
583 | obt_as.fmt = | |
584 | pw_to_audfmt(v->info.format, &obt_as.endianness, &v->frame_size); | |
585 | v->frame_size *= as->nchannels; | |
586 | ||
587 | /* call the function that creates a new stream for recording */ | |
588 | r = qpw_stream_new(c, v, ppdo->stream_name ? : c->dev->id, | |
589 | ppdo->name, SPA_DIRECTION_INPUT); | |
590 | if (r < 0) { | |
c2d3d1c2 DB |
591 | pw_thread_loop_unlock(c->thread_loop); |
592 | return -1; | |
593 | } | |
594 | ||
595 | /* report the audio format we support */ | |
596 | audio_pcm_init_info(&hw->info, &obt_as); | |
597 | ||
598 | /* report the buffer size to qemu */ | |
599 | hw->samples = audio_buffer_frames( | |
600 | qapi_AudiodevPipewirePerDirectionOptions_base(ppdo), &obt_as, 46440); | |
601 | ||
602 | pw_thread_loop_unlock(c->thread_loop); | |
603 | return 0; | |
604 | } | |
605 | ||
606 | static void | |
92fd7868 | 607 | qpw_voice_fini(PWVoice *v) |
c2d3d1c2 | 608 | { |
92fd7868 | 609 | pwaudio *c = v->g; |
c2d3d1c2 | 610 | |
92fd7868 MAL |
611 | if (!v->stream) { |
612 | return; | |
c2d3d1c2 | 613 | } |
92fd7868 MAL |
614 | pw_thread_loop_lock(c->thread_loop); |
615 | pw_stream_destroy(v->stream); | |
616 | v->stream = NULL; | |
617 | pw_thread_loop_unlock(c->thread_loop); | |
c2d3d1c2 DB |
618 | } |
619 | ||
620 | static void | |
92fd7868 | 621 | qpw_fini_out(HWVoiceOut *hw) |
c2d3d1c2 | 622 | { |
92fd7868 MAL |
623 | qpw_voice_fini(&PW_VOICE_OUT(hw)->v); |
624 | } | |
c2d3d1c2 | 625 | |
92fd7868 MAL |
626 | static void |
627 | qpw_fini_in(HWVoiceIn *hw) | |
628 | { | |
629 | qpw_voice_fini(&PW_VOICE_IN(hw)->v); | |
c2d3d1c2 DB |
630 | } |
631 | ||
632 | static void | |
92fd7868 | 633 | qpw_voice_set_enabled(PWVoice *v, bool enable) |
c2d3d1c2 | 634 | { |
c2d3d1c2 DB |
635 | pwaudio *c = v->g; |
636 | pw_thread_loop_lock(c->thread_loop); | |
637 | pw_stream_set_active(v->stream, enable); | |
638 | pw_thread_loop_unlock(c->thread_loop); | |
639 | } | |
640 | ||
92fd7868 MAL |
641 | static void |
642 | qpw_enable_out(HWVoiceOut *hw, bool enable) | |
643 | { | |
644 | qpw_voice_set_enabled(&PW_VOICE_OUT(hw)->v, enable); | |
645 | } | |
646 | ||
c2d3d1c2 DB |
647 | static void |
648 | qpw_enable_in(HWVoiceIn *hw, bool enable) | |
649 | { | |
92fd7868 | 650 | qpw_voice_set_enabled(&PW_VOICE_IN(hw)->v, enable); |
c2d3d1c2 DB |
651 | } |
652 | ||
653 | static void | |
92fd7868 | 654 | qpw_voice_set_volume(PWVoice *v, Volume *vol) |
c2d3d1c2 | 655 | { |
c2d3d1c2 DB |
656 | pwaudio *c = v->g; |
657 | int i, ret; | |
658 | ||
659 | pw_thread_loop_lock(c->thread_loop); | |
660 | v->volume.channels = vol->channels; | |
661 | ||
662 | for (i = 0; i < vol->channels; ++i) { | |
663 | v->volume.values[i] = (float)vol->vol[i] / 255; | |
664 | } | |
665 | ||
666 | ret = pw_stream_set_control(v->stream, | |
667 | SPA_PROP_channelVolumes, v->volume.channels, v->volume.values, 0); | |
668 | trace_pw_vol(ret == 0 ? "success" : "failed"); | |
669 | ||
670 | v->muted = vol->mute; | |
671 | float val = v->muted ? 1.f : 0.f; | |
672 | ret = pw_stream_set_control(v->stream, SPA_PROP_mute, 1, &val, 0); | |
673 | pw_thread_loop_unlock(c->thread_loop); | |
674 | } | |
675 | ||
676 | static void | |
92fd7868 | 677 | qpw_volume_out(HWVoiceOut *hw, Volume *vol) |
c2d3d1c2 | 678 | { |
92fd7868 MAL |
679 | qpw_voice_set_volume(&PW_VOICE_OUT(hw)->v, vol); |
680 | } | |
c2d3d1c2 | 681 | |
92fd7868 MAL |
682 | static void |
683 | qpw_volume_in(HWVoiceIn *hw, Volume *vol) | |
684 | { | |
685 | qpw_voice_set_volume(&PW_VOICE_IN(hw)->v, vol); | |
c2d3d1c2 DB |
686 | } |
687 | ||
688 | static int wait_resync(pwaudio *pw) | |
689 | { | |
690 | int res; | |
691 | pw->pending_seq = pw_core_sync(pw->core, PW_ID_CORE, pw->pending_seq); | |
692 | ||
693 | while (true) { | |
694 | pw_thread_loop_wait(pw->thread_loop); | |
695 | ||
696 | res = pw->error; | |
697 | if (res < 0) { | |
698 | pw->error = 0; | |
699 | return res; | |
700 | } | |
701 | if (pw->pending_seq == pw->last_seq) { | |
702 | break; | |
703 | } | |
704 | } | |
705 | return 0; | |
706 | } | |
24a9095c | 707 | |
c2d3d1c2 DB |
708 | static void |
709 | on_core_error(void *data, uint32_t id, int seq, int res, const char *message) | |
710 | { | |
711 | pwaudio *pw = data; | |
712 | ||
713 | error_report("error id:%u seq:%d res:%d (%s): %s", | |
714 | id, seq, res, spa_strerror(res), message); | |
715 | ||
716 | /* stop and exit the thread loop */ | |
717 | pw_thread_loop_signal(pw->thread_loop, FALSE); | |
718 | } | |
719 | ||
720 | static void | |
721 | on_core_done(void *data, uint32_t id, int seq) | |
722 | { | |
723 | pwaudio *pw = data; | |
724 | assert(id == PW_ID_CORE); | |
725 | pw->last_seq = seq; | |
726 | if (pw->pending_seq == seq) { | |
727 | /* stop and exit the thread loop */ | |
728 | pw_thread_loop_signal(pw->thread_loop, FALSE); | |
729 | } | |
730 | } | |
731 | ||
732 | static const struct pw_core_events core_events = { | |
733 | PW_VERSION_CORE_EVENTS, | |
734 | .done = on_core_done, | |
735 | .error = on_core_error, | |
736 | }; | |
737 | ||
738 | static void * | |
f6061733 | 739 | qpw_audio_init(Audiodev *dev, Error **errp) |
c2d3d1c2 DB |
740 | { |
741 | g_autofree pwaudio *pw = g_new0(pwaudio, 1); | |
c2d3d1c2 | 742 | |
c2d3d1c2 | 743 | assert(dev->driver == AUDIODEV_DRIVER_PIPEWIRE); |
87048d20 MAL |
744 | trace_pw_audio_init(); |
745 | ||
746 | pw_init(NULL, NULL); | |
c2d3d1c2 DB |
747 | |
748 | pw->dev = dev; | |
20c51248 | 749 | pw->thread_loop = pw_thread_loop_new("PipeWire thread loop", NULL); |
c2d3d1c2 | 750 | if (pw->thread_loop == NULL) { |
f6061733 | 751 | error_setg_errno(errp, errno, "Could not create PipeWire loop"); |
c2d3d1c2 DB |
752 | goto fail; |
753 | } | |
754 | ||
755 | pw->context = | |
756 | pw_context_new(pw_thread_loop_get_loop(pw->thread_loop), NULL, 0); | |
757 | if (pw->context == NULL) { | |
f6061733 | 758 | error_setg_errno(errp, errno, "Could not create PipeWire context"); |
c2d3d1c2 DB |
759 | goto fail; |
760 | } | |
761 | ||
762 | if (pw_thread_loop_start(pw->thread_loop) < 0) { | |
f6061733 | 763 | error_setg_errno(errp, errno, "Could not start PipeWire loop"); |
c2d3d1c2 DB |
764 | goto fail; |
765 | } | |
766 | ||
767 | pw_thread_loop_lock(pw->thread_loop); | |
768 | ||
769 | pw->core = pw_context_connect(pw->context, NULL, 0); | |
770 | if (pw->core == NULL) { | |
771 | pw_thread_loop_unlock(pw->thread_loop); | |
f6061733 | 772 | goto fail_error; |
c2d3d1c2 DB |
773 | } |
774 | ||
775 | if (pw_core_add_listener(pw->core, &pw->core_listener, | |
776 | &core_events, pw) < 0) { | |
777 | pw_thread_loop_unlock(pw->thread_loop); | |
f6061733 | 778 | goto fail_error; |
c2d3d1c2 DB |
779 | } |
780 | if (wait_resync(pw) < 0) { | |
781 | pw_thread_loop_unlock(pw->thread_loop); | |
782 | } | |
783 | ||
784 | pw_thread_loop_unlock(pw->thread_loop); | |
785 | ||
786 | return g_steal_pointer(&pw); | |
787 | ||
f6061733 PB |
788 | fail_error: |
789 | error_setg(errp, "Failed to initialize PW context"); | |
c2d3d1c2 | 790 | fail: |
c2d3d1c2 DB |
791 | if (pw->thread_loop) { |
792 | pw_thread_loop_stop(pw->thread_loop); | |
793 | } | |
3b287608 MAL |
794 | g_clear_pointer(&pw->context, pw_context_destroy); |
795 | g_clear_pointer(&pw->thread_loop, pw_thread_loop_destroy); | |
c2d3d1c2 DB |
796 | return NULL; |
797 | } | |
798 | ||
799 | static void | |
800 | qpw_audio_fini(void *opaque) | |
801 | { | |
802 | pwaudio *pw = opaque; | |
803 | ||
804 | if (pw->thread_loop) { | |
805 | pw_thread_loop_stop(pw->thread_loop); | |
806 | } | |
807 | ||
808 | if (pw->core) { | |
809 | spa_hook_remove(&pw->core_listener); | |
810 | spa_zero(pw->core_listener); | |
811 | pw_core_disconnect(pw->core); | |
812 | } | |
813 | ||
814 | if (pw->context) { | |
815 | pw_context_destroy(pw->context); | |
816 | } | |
817 | pw_thread_loop_destroy(pw->thread_loop); | |
818 | ||
819 | g_free(pw); | |
820 | } | |
821 | ||
822 | static struct audio_pcm_ops qpw_pcm_ops = { | |
823 | .init_out = qpw_init_out, | |
824 | .fini_out = qpw_fini_out, | |
825 | .write = qpw_write, | |
826 | .buffer_get_free = qpw_buffer_get_free, | |
827 | .run_buffer_out = audio_generic_run_buffer_out, | |
828 | .enable_out = qpw_enable_out, | |
829 | .volume_out = qpw_volume_out, | |
830 | .volume_in = qpw_volume_in, | |
831 | ||
832 | .init_in = qpw_init_in, | |
833 | .fini_in = qpw_fini_in, | |
834 | .read = qpw_read, | |
835 | .run_buffer_in = audio_generic_run_buffer_in, | |
836 | .enable_in = qpw_enable_in | |
837 | }; | |
838 | ||
839 | static struct audio_driver pw_audio_driver = { | |
840 | .name = "pipewire", | |
841 | .descr = "http://www.pipewire.org/", | |
842 | .init = qpw_audio_init, | |
843 | .fini = qpw_audio_fini, | |
844 | .pcm_ops = &qpw_pcm_ops, | |
c2d3d1c2 DB |
845 | .max_voices_out = INT_MAX, |
846 | .max_voices_in = INT_MAX, | |
847 | .voice_size_out = sizeof(PWVoiceOut), | |
848 | .voice_size_in = sizeof(PWVoiceIn), | |
849 | }; | |
850 | ||
851 | static void | |
852 | register_audio_pw(void) | |
853 | { | |
854 | audio_driver_register(&pw_audio_driver); | |
855 | } | |
856 | ||
857 | type_init(register_audio_pw); |