311 static void snd_pcm_dmix_sync_area(snd_pcm_t *pcm)  in snd_pcm_dmix_sync_area()  argument
313 	snd_pcm_direct_t *dmix = pcm->private_data;  in snd_pcm_dmix_sync_area()
322 	size = pcm_frame_diff2(dmix->appl_ptr, dmix->last_appl_ptr, pcm->boundary);  in snd_pcm_dmix_sync_area()
334 		dmix->last_appl_ptr %= pcm->boundary;  in snd_pcm_dmix_sync_area()
337 		size = pcm_frame_diff2(dmix->appl_ptr, dmix->last_appl_ptr, pcm->boundary);  in snd_pcm_dmix_sync_area()
358 	src_areas = snd_pcm_mmap_areas(pcm);  in snd_pcm_dmix_sync_area()
360 	appl_ptr = dmix->last_appl_ptr % pcm->buffer_size;  in snd_pcm_dmix_sync_area()
362 	dmix->last_appl_ptr %= pcm->boundary;  in snd_pcm_dmix_sync_area()
369 		if (appl_ptr + transfer > pcm->buffer_size)  in snd_pcm_dmix_sync_area()
370 			transfer = pcm->buffer_size - appl_ptr;  in snd_pcm_dmix_sync_area()
380 		appl_ptr %= pcm->buffer_size;  in snd_pcm_dmix_sync_area()
388 static int snd_pcm_dmix_sync_ptr0(snd_pcm_t *pcm, snd_pcm_uframes_t slave_hw_ptr)  in snd_pcm_dmix_sync_ptr0()  argument
390 	snd_pcm_direct_t *dmix = pcm->private_data;  in snd_pcm_dmix_sync_ptr0()
404 	dmix->hw_ptr %= pcm->boundary;  in snd_pcm_dmix_sync_ptr0()
405 	if (pcm->stop_threshold >= pcm->boundary)	/* don't care */  in snd_pcm_dmix_sync_ptr0()
407 	avail = snd_pcm_mmap_playback_avail(pcm);  in snd_pcm_dmix_sync_ptr0()
410 	if (avail >= pcm->stop_threshold) {  in snd_pcm_dmix_sync_ptr0()
412 		gettimestamp(&dmix->trigger_tstamp, pcm->tstamp_type);  in snd_pcm_dmix_sync_ptr0()
424 static int snd_pcm_dmix_sync_ptr(snd_pcm_t *pcm)  in snd_pcm_dmix_sync_ptr()  argument
426 	snd_pcm_direct_t *dmix = pcm->private_data;  in snd_pcm_dmix_sync_ptr()
440 	if (snd_pcm_direct_client_chk_xrun(dmix, pcm))  in snd_pcm_dmix_sync_ptr()
445 	return snd_pcm_dmix_sync_ptr0(pcm, *dmix->spcm->hw.ptr);  in snd_pcm_dmix_sync_ptr()
452 static snd_pcm_state_t snd_pcm_dmix_state(snd_pcm_t *pcm)  in snd_pcm_dmix_state()  argument
454 	snd_pcm_direct_t *dmix = pcm->private_data;  in snd_pcm_dmix_state()
470 	snd_pcm_direct_client_chk_xrun(dmix, pcm);  in snd_pcm_dmix_state()
476 static int snd_pcm_dmix_status(snd_pcm_t *pcm, snd_pcm_status_t * status)  in snd_pcm_dmix_status()  argument
478 	snd_pcm_direct_t *dmix = pcm->private_data;  in snd_pcm_dmix_status()
486 		snd_pcm_dmix_sync_ptr0(pcm, status->hw_ptr);  in snd_pcm_dmix_status()
487 		status->delay = snd_pcm_mmap_playback_delay(pcm);  in snd_pcm_dmix_status()
493 	status->state = snd_pcm_dmix_state(pcm);  in snd_pcm_dmix_status()
494 	status->hw_ptr = *pcm->hw.ptr; /* boundary may be different */  in snd_pcm_dmix_status()
495 	status->appl_ptr = *pcm->appl.ptr; /* slave PCM doesn't set appl_ptr */  in snd_pcm_dmix_status()
497 	status->avail = snd_pcm_mmap_playback_avail(pcm);  in snd_pcm_dmix_status()
503 static int snd_pcm_dmix_delay(snd_pcm_t *pcm, snd_pcm_sframes_t *delayp)  in snd_pcm_dmix_delay()  argument
505 	snd_pcm_direct_t *dmix = pcm->private_data;  in snd_pcm_dmix_delay()
511 		err = snd_pcm_dmix_sync_ptr(pcm);  in snd_pcm_dmix_delay()
518 		*delayp = snd_pcm_mmap_playback_delay(pcm);  in snd_pcm_dmix_delay()
529 static int snd_pcm_dmix_hwsync(snd_pcm_t *pcm)  in snd_pcm_dmix_hwsync()  argument
531 	snd_pcm_direct_t *dmix = pcm->private_data;  in snd_pcm_dmix_hwsync()
537 		return snd_pcm_dmix_sync_ptr(pcm);  in snd_pcm_dmix_hwsync()
551 static int snd_pcm_dmix_reset(snd_pcm_t *pcm)  in snd_pcm_dmix_reset()  argument
553 	snd_pcm_direct_t *dmix = pcm->private_data;  in snd_pcm_dmix_reset()
554 	dmix->hw_ptr %= pcm->period_size;  in snd_pcm_dmix_reset()
557 	snd_pcm_direct_reset_slave_ptr(pcm, dmix);  in snd_pcm_dmix_reset()
561 static int snd_pcm_dmix_start_timer(snd_pcm_t *pcm, snd_pcm_direct_t *dmix)  in snd_pcm_dmix_start_timer()  argument
567 	snd_pcm_direct_reset_slave_ptr(pcm, dmix);  in snd_pcm_dmix_start_timer()
575 static int snd_pcm_dmix_start(snd_pcm_t *pcm)  in snd_pcm_dmix_start()  argument
577 	snd_pcm_direct_t *dmix = pcm->private_data;  in snd_pcm_dmix_start()
583 	avail = snd_pcm_mmap_playback_hw_avail(pcm);  in snd_pcm_dmix_start()
589 		if ((err = snd_pcm_dmix_start_timer(pcm, dmix)) < 0)  in snd_pcm_dmix_start()
591 		snd_pcm_dmix_sync_area(pcm);  in snd_pcm_dmix_start()
593 	gettimestamp(&dmix->trigger_tstamp, pcm->tstamp_type);  in snd_pcm_dmix_start()
597 static int snd_pcm_dmix_drop(snd_pcm_t *pcm)  in snd_pcm_dmix_drop()  argument
599 	snd_pcm_direct_t *dmix = pcm->private_data;  in snd_pcm_dmix_drop()
608 static int __snd_pcm_dmix_drain(snd_pcm_t *pcm)  in __snd_pcm_dmix_drain()  argument
610 	snd_pcm_direct_t *dmix = pcm->private_data;  in __snd_pcm_dmix_drain()
624 		if (snd_pcm_mmap_playback_hw_avail(pcm) > 0)  in __snd_pcm_dmix_drain()
625 			snd_pcm_dmix_start(pcm);  in __snd_pcm_dmix_drain()
627 			snd_pcm_dmix_drop(pcm);  in __snd_pcm_dmix_drain()
633 		snd_pcm_dmix_drop(pcm);  in __snd_pcm_dmix_drain()
637 	stop_threshold = pcm->stop_threshold;  in __snd_pcm_dmix_drain()
638 	if (pcm->stop_threshold > pcm->buffer_size)  in __snd_pcm_dmix_drain()
639 		pcm->stop_threshold = pcm->buffer_size;  in __snd_pcm_dmix_drain()
642 		err = snd_pcm_dmix_sync_ptr(pcm);  in __snd_pcm_dmix_drain()
644 			snd_pcm_dmix_drop(pcm);  in __snd_pcm_dmix_drain()
648 			snd_pcm_dmix_sync_area(pcm);  in __snd_pcm_dmix_drain()
649 			if ((pcm->mode & SND_PCM_NONBLOCK) == 0) {  in __snd_pcm_dmix_drain()
650 				snd_pcm_wait_nocheck(pcm, -1);  in __snd_pcm_dmix_drain()
662 		if (pcm->mode & SND_PCM_NONBLOCK) {  in __snd_pcm_dmix_drain()
670 	pcm->stop_threshold = stop_threshold;  in __snd_pcm_dmix_drain()
674 static int snd_pcm_dmix_drain(snd_pcm_t *pcm)  in snd_pcm_dmix_drain()  argument
678 	snd_pcm_lock(pcm);  in snd_pcm_dmix_drain()
679 	err = __snd_pcm_dmix_drain(pcm);  in snd_pcm_dmix_drain()
680 	snd_pcm_unlock(pcm);  in snd_pcm_dmix_drain()
684 static int snd_pcm_dmix_pause(snd_pcm_t *pcm ATTRIBUTE_UNUSED, int enable ATTRIBUTE_UNUSED)  in snd_pcm_dmix_pause()
689 static snd_pcm_sframes_t snd_pcm_dmix_rewindable(snd_pcm_t *pcm)  in snd_pcm_dmix_rewindable()  argument
691 	return snd_pcm_mmap_playback_hw_rewindable(pcm);  in snd_pcm_dmix_rewindable()
694 static snd_pcm_sframes_t snd_pcm_dmix_rewind(snd_pcm_t *pcm, snd_pcm_uframes_t frames)  in snd_pcm_dmix_rewind()  argument
696 	snd_pcm_direct_t *dmix = pcm->private_data;  in snd_pcm_dmix_rewind()
704 		err = snd_pcm_dmix_hwsync(pcm);  in snd_pcm_dmix_rewind()
716 	size = pcm_frame_diff(dmix->last_appl_ptr, dmix->appl_ptr, pcm->boundary);  in snd_pcm_dmix_rewind()
719 	snd_pcm_mmap_appl_backward(pcm, size);  in snd_pcm_dmix_rewind()
728 	size = pcm_frame_diff(dmix->appl_ptr, dmix->hw_ptr, pcm->boundary);  in snd_pcm_dmix_rewind()
731 	slave_size = pcm_frame_diff(dmix->slave_appl_ptr, dmix->slave_hw_ptr, pcm->boundary);  in snd_pcm_dmix_rewind()
741 	src_areas = snd_pcm_mmap_areas(pcm);  in snd_pcm_dmix_rewind()
744 	dmix->last_appl_ptr %= pcm->boundary;  in snd_pcm_dmix_rewind()
745 	appl_ptr = dmix->last_appl_ptr % pcm->buffer_size;  in snd_pcm_dmix_rewind()
752 		if (appl_ptr + transfer > pcm->buffer_size)  in snd_pcm_dmix_rewind()
753 			transfer = pcm->buffer_size - appl_ptr;  in snd_pcm_dmix_rewind()
763 		appl_ptr %= pcm->buffer_size;  in snd_pcm_dmix_rewind()
767 	snd_pcm_mmap_appl_backward(pcm, frames_to_remix);  in snd_pcm_dmix_rewind()
776 static snd_pcm_sframes_t snd_pcm_dmix_forwardable(snd_pcm_t *pcm)  in snd_pcm_dmix_forwardable()  argument
778 	return snd_pcm_mmap_avail(pcm);  in snd_pcm_dmix_forwardable()
781 static snd_pcm_sframes_t snd_pcm_dmix_forward(snd_pcm_t *pcm, snd_pcm_uframes_t frames)  in snd_pcm_dmix_forward()  argument
785 	avail = snd_pcm_dmix_forwardable(pcm);  in snd_pcm_dmix_forward()
788 	snd_pcm_mmap_appl_forward(pcm, frames);  in snd_pcm_dmix_forward()
792 static snd_pcm_sframes_t snd_pcm_dmix_readi(snd_pcm_t *pcm ATTRIBUTE_UNUSED, void *buffer ATTRIBUTE…  in snd_pcm_dmix_readi()
797 static snd_pcm_sframes_t snd_pcm_dmix_readn(snd_pcm_t *pcm ATTRIBUTE_UNUSED, void **bufs ATTRIBUTE_…  in snd_pcm_dmix_readn()
802 static int snd_pcm_dmix_close(snd_pcm_t *pcm)  in snd_pcm_dmix_close()  argument
804 	snd_pcm_direct_t *dmix = pcm->private_data;  in snd_pcm_dmix_close()
821 	pcm->private_data = NULL;  in snd_pcm_dmix_close()
826 static snd_pcm_sframes_t snd_pcm_dmix_mmap_commit(snd_pcm_t *pcm,  in snd_pcm_dmix_mmap_commit()  argument
830 	snd_pcm_direct_t *dmix = pcm->private_data;  in snd_pcm_dmix_mmap_commit()
843 	if (snd_pcm_direct_client_chk_xrun(dmix, pcm))  in snd_pcm_dmix_mmap_commit()
847 	snd_pcm_mmap_appl_forward(pcm, size);  in snd_pcm_dmix_mmap_commit()
849 		if ((err = snd_pcm_dmix_start_timer(pcm, dmix)) < 0)  in snd_pcm_dmix_mmap_commit()
853 		if ((err = snd_pcm_dmix_sync_ptr(pcm)) < 0)  in snd_pcm_dmix_mmap_commit()
860 		snd_pcm_dmix_sync_area(pcm);  in snd_pcm_dmix_mmap_commit()
862 		if (snd_pcm_mmap_playback_avail(pcm) < pcm->avail_min)  in snd_pcm_dmix_mmap_commit()
868 static snd_pcm_sframes_t snd_pcm_dmix_avail_update(snd_pcm_t *pcm)  in snd_pcm_dmix_avail_update()  argument
870 	snd_pcm_direct_t *dmix = pcm->private_data;  in snd_pcm_dmix_avail_update()
875 		if ((err = snd_pcm_dmix_sync_ptr(pcm)) < 0)  in snd_pcm_dmix_avail_update()
881 	return snd_pcm_mmap_playback_avail(pcm);  in snd_pcm_dmix_avail_update()
884 static int snd_pcm_dmix_htimestamp(snd_pcm_t *pcm,  in snd_pcm_dmix_htimestamp()  argument
888 	snd_pcm_direct_t *dmix = pcm->private_data;  in snd_pcm_dmix_htimestamp()
895 			snd_pcm_dmix_sync_ptr(pcm);  in snd_pcm_dmix_htimestamp()
896 		avail1 = snd_pcm_mmap_playback_avail(pcm);  in snd_pcm_dmix_htimestamp()
906 static int snd_pcm_dmix_poll_revents(snd_pcm_t *pcm, struct pollfd *pfds, unsigned int nfds, unsign…  in snd_pcm_dmix_poll_revents()  argument
908 	snd_pcm_direct_t *dmix = pcm->private_data;  in snd_pcm_dmix_poll_revents()
910 		snd_pcm_dmix_sync_area(pcm);  in snd_pcm_dmix_poll_revents()
911 	return snd_pcm_direct_poll_revents(pcm, pfds, nfds, revents);  in snd_pcm_dmix_poll_revents()
915 static void snd_pcm_dmix_dump(snd_pcm_t *pcm, snd_output_t *out)  in snd_pcm_dmix_dump()  argument
917 	snd_pcm_direct_t *dmix = pcm->private_data;  in snd_pcm_dmix_dump()
920 	if (pcm->setup) {  in snd_pcm_dmix_dump()
922 		snd_pcm_dump_setup(pcm, out);  in snd_pcm_dmix_dump()
998 	snd_pcm_t *pcm, *spcm = NULL;  in snd_pcm_dmix_open()  local
1009 	ret = _snd_pcm_direct_new(&pcm, &dmix, SND_PCM_TYPE_DMIX, name, opts, params, stream, mode);  in snd_pcm_dmix_open()
1014 	pcm->ops = &snd_pcm_dmix_ops;  in snd_pcm_dmix_open()
1015 	pcm->fast_ops = &snd_pcm_dmix_fast_ops;  in snd_pcm_dmix_open()
1016 	pcm->private_data = dmix;  in snd_pcm_dmix_open()
1122 	pcm->poll_fd = dmix->poll_fd;  in snd_pcm_dmix_open()
1123 	pcm->poll_events = POLLIN;	/* it's different than other plugins */  in snd_pcm_dmix_open()
1124 	pcm->tstamp_type = spcm->tstamp_type;  in snd_pcm_dmix_open()
1125 	pcm->mmap_rw = 1;  in snd_pcm_dmix_open()
1126 	snd_pcm_set_hw_ptr(pcm, &dmix->hw_ptr, -1, 0);  in snd_pcm_dmix_open()
1127 	snd_pcm_set_appl_ptr(pcm, &dmix->appl_ptr, -1, 0);  in snd_pcm_dmix_open()
1134 	*pcmp = pcm;  in snd_pcm_dmix_open()
1156 	snd_pcm_free(pcm);  in snd_pcm_dmix_open()