Lines Matching full:dpcm
73 int (*open)(struct loopback_pcm *dpcm);
77 int (*start)(struct loopback_pcm *dpcm);
81 int (*stop)(struct loopback_pcm *dpcm);
83 int (*stop_sync)(struct loopback_pcm *dpcm);
85 int (*close_substream)(struct loopback_pcm *dpcm);
89 int (*close_cable)(struct loopback_pcm *dpcm);
95 void (*dpcm_info)(struct loopback_pcm *dpcm,
166 static inline unsigned int byte_pos(struct loopback_pcm *dpcm, unsigned int x) in byte_pos() argument
168 if (dpcm->pcm_rate_shift == NO_PITCH) { in byte_pos()
172 HZ * (unsigned long long)dpcm->pcm_rate_shift); in byte_pos()
174 return x - (x % dpcm->pcm_salign); in byte_pos()
177 static inline unsigned int frac_pos(struct loopback_pcm *dpcm, unsigned int x) in frac_pos() argument
179 if (dpcm->pcm_rate_shift == NO_PITCH) { /* no pitch */ in frac_pos()
182 x = div_u64(dpcm->pcm_rate_shift * (unsigned long long)x * HZ, in frac_pos()
188 static inline struct loopback_setup *get_setup(struct loopback_pcm *dpcm) in get_setup() argument
190 int device = dpcm->substream->pstr->pcm->device; in get_setup()
192 if (dpcm->substream->stream == SNDRV_PCM_STREAM_PLAYBACK) in get_setup()
194 return &dpcm->loopback->setup[dpcm->substream->number][device]; in get_setup()
197 static inline unsigned int get_notify(struct loopback_pcm *dpcm) in get_notify() argument
199 return get_setup(dpcm)->notify; in get_notify()
202 static inline unsigned int get_rate_shift(struct loopback_pcm *dpcm) in get_rate_shift() argument
204 return get_setup(dpcm)->rate_shift; in get_rate_shift()
208 static int loopback_jiffies_timer_start(struct loopback_pcm *dpcm) in loopback_jiffies_timer_start() argument
211 unsigned int rate_shift = get_rate_shift(dpcm); in loopback_jiffies_timer_start()
213 if (rate_shift != dpcm->pcm_rate_shift) { in loopback_jiffies_timer_start()
214 dpcm->pcm_rate_shift = rate_shift; in loopback_jiffies_timer_start()
215 dpcm->period_size_frac = frac_pos(dpcm, dpcm->pcm_period_size); in loopback_jiffies_timer_start()
217 if (dpcm->period_size_frac <= dpcm->irq_pos) { in loopback_jiffies_timer_start()
218 dpcm->irq_pos %= dpcm->period_size_frac; in loopback_jiffies_timer_start()
219 dpcm->period_update_pending = 1; in loopback_jiffies_timer_start()
221 tick = dpcm->period_size_frac - dpcm->irq_pos; in loopback_jiffies_timer_start()
222 tick = (tick + dpcm->pcm_bps - 1) / dpcm->pcm_bps; in loopback_jiffies_timer_start()
223 mod_timer(&dpcm->timer, jiffies + tick); in loopback_jiffies_timer_start()
229 static int loopback_snd_timer_start(struct loopback_pcm *dpcm) in loopback_snd_timer_start() argument
231 struct loopback_cable *cable = dpcm->cable; in loopback_snd_timer_start()
246 pcm_err(dpcm->substream->pcm, in loopback_snd_timer_start()
258 static inline int loopback_jiffies_timer_stop(struct loopback_pcm *dpcm) in loopback_jiffies_timer_stop() argument
260 del_timer(&dpcm->timer); in loopback_jiffies_timer_stop()
261 dpcm->timer.expires = 0; in loopback_jiffies_timer_stop()
267 static int loopback_snd_timer_stop(struct loopback_pcm *dpcm) in loopback_snd_timer_stop() argument
269 struct loopback_cable *cable = dpcm->cable; in loopback_snd_timer_stop()
278 pcm_err(dpcm->substream->pcm, in loopback_snd_timer_stop()
289 static inline int loopback_jiffies_timer_stop_sync(struct loopback_pcm *dpcm) in loopback_jiffies_timer_stop_sync() argument
291 del_timer_sync(&dpcm->timer); in loopback_jiffies_timer_stop_sync()
297 static int loopback_snd_timer_close_cable(struct loopback_pcm *dpcm) in loopback_snd_timer_close_cable() argument
299 struct loopback_cable *cable = dpcm->cable; in loopback_snd_timer_close_cable()
371 static void loopback_active_notify(struct loopback_pcm *dpcm) in loopback_active_notify() argument
373 snd_ctl_notify(dpcm->loopback->card, in loopback_active_notify()
375 &get_setup(dpcm)->active_id); in loopback_active_notify()
381 struct loopback_pcm *dpcm = runtime->private_data; in loopback_trigger() local
382 struct loopback_cable *cable = dpcm->cable; in loopback_trigger()
390 dpcm->last_jiffies = jiffies; in loopback_trigger()
391 dpcm->pcm_rate_shift = 0; in loopback_trigger()
392 dpcm->last_drift = 0; in loopback_trigger()
396 err = cable->ops->start(dpcm); in loopback_trigger()
399 loopback_active_notify(dpcm); in loopback_trigger()
405 err = cable->ops->stop(dpcm); in loopback_trigger()
408 loopback_active_notify(dpcm); in loopback_trigger()
414 err = cable->ops->stop(dpcm); in loopback_trigger()
417 loopback_active_notify(dpcm); in loopback_trigger()
422 dpcm->last_jiffies = jiffies; in loopback_trigger()
424 err = cable->ops->start(dpcm); in loopback_trigger()
427 loopback_active_notify(dpcm); in loopback_trigger()
438 struct loopback_pcm *dpcm = runtime->private_data; in params_change() local
439 struct loopback_cable *cable = dpcm->cable; in params_change()
458 struct loopback_pcm *dpcm = runtime->private_data; in loopback_prepare() local
459 struct loopback_cable *cable = dpcm->cable; in loopback_prepare()
463 err = cable->ops->stop_sync(dpcm); in loopback_prepare()
474 dpcm->buf_pos = 0; in loopback_prepare()
475 dpcm->pcm_buffer_size = frames_to_bytes(runtime, runtime->buffer_size); in loopback_prepare()
478 dpcm->silent_size = dpcm->pcm_buffer_size; in loopback_prepare()
483 dpcm->irq_pos = 0; in loopback_prepare()
484 dpcm->period_update_pending = 0; in loopback_prepare()
485 dpcm->pcm_bps = bps; in loopback_prepare()
486 dpcm->pcm_salign = salign; in loopback_prepare()
487 dpcm->pcm_period_size = frames_to_bytes(runtime, runtime->period_size); in loopback_prepare()
489 mutex_lock(&dpcm->loopback->cable_lock); in loopback_prepare()
491 (get_setup(dpcm)->notify && in loopback_prepare()
495 mutex_unlock(&dpcm->loopback->cable_lock); in loopback_prepare()
500 static void clear_capture_buf(struct loopback_pcm *dpcm, unsigned int bytes) in clear_capture_buf() argument
502 struct snd_pcm_runtime *runtime = dpcm->substream->runtime; in clear_capture_buf()
504 unsigned int dst_off = dpcm->buf_pos; in clear_capture_buf()
506 if (dpcm->silent_size >= dpcm->pcm_buffer_size) in clear_capture_buf()
508 if (dpcm->silent_size + bytes > dpcm->pcm_buffer_size) in clear_capture_buf()
509 bytes = dpcm->pcm_buffer_size - dpcm->silent_size; in clear_capture_buf()
513 if (dst_off + size > dpcm->pcm_buffer_size) in clear_capture_buf()
514 size = dpcm->pcm_buffer_size - dst_off; in clear_capture_buf()
518 dpcm->silent_size += size; in clear_capture_buf()
575 static inline unsigned int bytepos_delta(struct loopback_pcm *dpcm, in bytepos_delta() argument
581 last_pos = byte_pos(dpcm, dpcm->irq_pos); in bytepos_delta()
582 dpcm->irq_pos += jiffies_delta * dpcm->pcm_bps; in bytepos_delta()
583 delta = byte_pos(dpcm, dpcm->irq_pos) - last_pos; in bytepos_delta()
584 if (delta >= dpcm->last_drift) in bytepos_delta()
585 delta -= dpcm->last_drift; in bytepos_delta()
586 dpcm->last_drift = 0; in bytepos_delta()
587 if (dpcm->irq_pos >= dpcm->period_size_frac) { in bytepos_delta()
588 dpcm->irq_pos %= dpcm->period_size_frac; in bytepos_delta()
589 dpcm->period_update_pending = 1; in bytepos_delta()
594 static inline void bytepos_finish(struct loopback_pcm *dpcm, in bytepos_finish() argument
597 dpcm->buf_pos += delta; in bytepos_finish()
598 dpcm->buf_pos %= dpcm->pcm_buffer_size; in bytepos_finish()
659 struct loopback_pcm *dpcm = from_timer(dpcm, t, timer); in loopback_jiffies_timer_function() local
662 spin_lock_irqsave(&dpcm->cable->lock, flags); in loopback_jiffies_timer_function()
663 if (loopback_jiffies_timer_pos_update(dpcm->cable) & in loopback_jiffies_timer_function()
664 (1 << dpcm->substream->stream)) { in loopback_jiffies_timer_function()
665 loopback_jiffies_timer_start(dpcm); in loopback_jiffies_timer_function()
666 if (dpcm->period_update_pending) { in loopback_jiffies_timer_function()
667 dpcm->period_update_pending = 0; in loopback_jiffies_timer_function()
668 spin_unlock_irqrestore(&dpcm->cable->lock, flags); in loopback_jiffies_timer_function()
670 snd_pcm_period_elapsed(dpcm->substream); in loopback_jiffies_timer_function()
674 spin_unlock_irqrestore(&dpcm->cable->lock, flags); in loopback_jiffies_timer_function()
682 struct loopback_pcm *dpcm = runtime->private_data; in loopback_snd_timer_check_resolution() local
683 struct loopback_cable *cable = dpcm->cable; in loopback_snd_timer_check_resolution()
699 pcm_err(dpcm->substream->pcm, in loopback_snd_timer_check_resolution()
838 static void loopback_jiffies_timer_dpcm_info(struct loopback_pcm *dpcm, in loopback_jiffies_timer_dpcm_info() argument
842 dpcm->period_update_pending); in loopback_jiffies_timer_dpcm_info()
843 snd_iprintf(buffer, " irq_pos:\t\t%u\n", dpcm->irq_pos); in loopback_jiffies_timer_dpcm_info()
844 snd_iprintf(buffer, " period_frac:\t%u\n", dpcm->period_size_frac); in loopback_jiffies_timer_dpcm_info()
846 dpcm->last_jiffies, jiffies); in loopback_jiffies_timer_dpcm_info()
847 snd_iprintf(buffer, " timer_expires:\t%lu\n", dpcm->timer.expires); in loopback_jiffies_timer_dpcm_info()
850 static void loopback_snd_timer_dpcm_info(struct loopback_pcm *dpcm, in loopback_snd_timer_dpcm_info() argument
853 struct loopback_cable *cable = dpcm->cable; in loopback_snd_timer_dpcm_info()
867 struct loopback_pcm *dpcm = runtime->private_data; in loopback_pointer() local
870 spin_lock(&dpcm->cable->lock); in loopback_pointer()
871 if (dpcm->cable->ops->pos_update) in loopback_pointer()
872 dpcm->cable->ops->pos_update(dpcm->cable); in loopback_pointer()
873 pos = dpcm->buf_pos; in loopback_pointer()
874 spin_unlock(&dpcm->cable->lock); in loopback_pointer()
905 struct loopback_pcm *dpcm = runtime->private_data; in loopback_runtime_free() local
906 kfree(dpcm); in loopback_runtime_free()
912 struct loopback_pcm *dpcm = runtime->private_data; in loopback_hw_free() local
913 struct loopback_cable *cable = dpcm->cable; in loopback_hw_free()
915 mutex_lock(&dpcm->loopback->cable_lock); in loopback_hw_free()
917 mutex_unlock(&dpcm->loopback->cable_lock); in loopback_hw_free()
932 struct loopback_pcm *dpcm = rule->private; in rule_format() local
933 struct loopback_cable *cable = dpcm->cable; in rule_format()
937 mutex_lock(&dpcm->loopback->cable_lock); in rule_format()
940 mutex_unlock(&dpcm->loopback->cable_lock); in rule_format()
947 struct loopback_pcm *dpcm = rule->private; in rule_rate() local
948 struct loopback_cable *cable = dpcm->cable; in rule_rate()
951 mutex_lock(&dpcm->loopback->cable_lock); in rule_rate()
954 mutex_unlock(&dpcm->loopback->cable_lock); in rule_rate()
963 struct loopback_pcm *dpcm = rule->private; in rule_channels() local
964 struct loopback_cable *cable = dpcm->cable; in rule_channels()
967 mutex_lock(&dpcm->loopback->cable_lock); in rule_channels()
970 mutex_unlock(&dpcm->loopback->cable_lock); in rule_channels()
979 struct loopback_pcm *dpcm = rule->private; in rule_period_bytes() local
980 struct loopback_cable *cable = dpcm->cable; in rule_period_bytes()
983 mutex_lock(&dpcm->loopback->cable_lock); in rule_period_bytes()
986 mutex_unlock(&dpcm->loopback->cable_lock); in rule_period_bytes()
1008 struct loopback_pcm *dpcm = substream->runtime->private_data; in free_cable() local
1010 if (cable->ops && cable->ops->close_cable && dpcm) in free_cable()
1011 cable->ops->close_cable(dpcm); in free_cable()
1018 static int loopback_jiffies_timer_open(struct loopback_pcm *dpcm) in loopback_jiffies_timer_open() argument
1020 timer_setup(&dpcm->timer, loopback_jiffies_timer_function, 0); in loopback_jiffies_timer_open()
1096 static int loopback_snd_timer_open(struct loopback_pcm *dpcm) in loopback_snd_timer_open() argument
1104 struct loopback_cable *cable = dpcm->cable; in loopback_snd_timer_open()
1112 err = loopback_parse_timer_id(dpcm->loopback->timer_source, &tid); in loopback_snd_timer_open()
1114 pcm_err(dpcm->substream->pcm, in loopback_snd_timer_open()
1116 dpcm->loopback->timer_source, err); in loopback_snd_timer_open()
1120 cable->snd_timer.stream = dpcm->substream->stream; in loopback_snd_timer_open()
1123 timeri = snd_timer_instance_new(dpcm->loopback->card->id); in loopback_snd_timer_open()
1157 pcm_err(dpcm->substream->pcm, in loopback_snd_timer_open()
1188 struct loopback_pcm *dpcm; in loopback_open() local
1194 dpcm = kzalloc(sizeof(*dpcm), GFP_KERNEL); in loopback_open()
1195 if (!dpcm) { in loopback_open()
1199 dpcm->loopback = loopback; in loopback_open()
1200 dpcm->substream = substream; in loopback_open()
1217 dpcm->cable = cable; in loopback_open()
1218 runtime->private_data = dpcm; in loopback_open()
1221 err = cable->ops->open(dpcm); in loopback_open()
1233 rule_format, dpcm, in loopback_open()
1239 rule_rate, dpcm, in loopback_open()
1245 rule_channels, dpcm, in loopback_open()
1257 rule_period_bytes, dpcm, in loopback_open()
1263 /* loopback_runtime_free() has not to be called if kfree(dpcm) was in loopback_open()
1267 if (get_notify(dpcm)) in loopback_open()
1273 cable->streams[substream->stream] = dpcm; in loopback_open()
1279 kfree(dpcm); in loopback_open()
1288 struct loopback_pcm *dpcm = substream->runtime->private_data; in loopback_close() local
1291 if (dpcm->cable->ops->close_substream) in loopback_close()
1292 err = dpcm->cable->ops->close_substream(dpcm); in loopback_close()
1607 struct loopback_pcm *dpcm, in print_dpcm_info() argument
1611 if (dpcm == NULL) { in print_dpcm_info()
1615 snd_iprintf(buffer, " buffer_size:\t%u\n", dpcm->pcm_buffer_size); in print_dpcm_info()
1616 snd_iprintf(buffer, " buffer_pos:\t\t%u\n", dpcm->buf_pos); in print_dpcm_info()
1617 snd_iprintf(buffer, " silent_size:\t%u\n", dpcm->silent_size); in print_dpcm_info()
1618 snd_iprintf(buffer, " period_size:\t%u\n", dpcm->pcm_period_size); in print_dpcm_info()
1619 snd_iprintf(buffer, " bytes_per_sec:\t%u\n", dpcm->pcm_bps); in print_dpcm_info()
1620 snd_iprintf(buffer, " sample_align:\t%u\n", dpcm->pcm_salign); in print_dpcm_info()
1621 snd_iprintf(buffer, " rate_shift:\t\t%u\n", dpcm->pcm_rate_shift); in print_dpcm_info()
1622 if (dpcm->cable->ops->dpcm_info) in print_dpcm_info()
1623 dpcm->cable->ops->dpcm_info(dpcm, buffer); in print_dpcm_info()