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