Lines Matching full:pcm
3 * Digital Audio (PCM) abstract layer
16 #include <sound/pcm.h>
24 MODULE_DESCRIPTION("Midlevel PCM code for ALSA.");
33 static int snd_pcm_free(struct snd_pcm *pcm);
40 struct snd_pcm *pcm; in snd_pcm_get() local
42 list_for_each_entry(pcm, &snd_pcm_devices, list) { in snd_pcm_get()
43 if (pcm->card == card && pcm->device == device) in snd_pcm_get()
44 return pcm; in snd_pcm_get()
51 struct snd_pcm *pcm; in snd_pcm_next() local
53 list_for_each_entry(pcm, &snd_pcm_devices, list) { in snd_pcm_next()
54 if (pcm->card == card && pcm->device > device) in snd_pcm_next()
55 return pcm->device; in snd_pcm_next()
56 else if (pcm->card->number > card->number) in snd_pcm_next()
64 struct snd_pcm *pcm; in snd_pcm_add() local
69 list_for_each_entry(pcm, &snd_pcm_devices, list) { in snd_pcm_add()
70 if (pcm->card == newpcm->card && pcm->device == newpcm->device) in snd_pcm_add()
72 if (pcm->card->number > newpcm->card->number || in snd_pcm_add()
73 (pcm->card == newpcm->card && in snd_pcm_add()
74 pcm->device > newpcm->device)) { in snd_pcm_add()
75 list_add(&newpcm->list, pcm->list.prev); in snd_pcm_add()
105 struct snd_pcm *pcm; in snd_pcm_control_ioctl() local
120 pcm = snd_pcm_get(card, device); in snd_pcm_control_ioctl()
121 if (pcm == NULL) in snd_pcm_control_ioctl()
123 pstr = &pcm->streams[stream]; in snd_pcm_control_ioctl()
134 guard(mutex)(&pcm->open_mutex); in snd_pcm_control_ioctl()
207 * snd_pcm_format_name - Return a name string for the given PCM format
208 * @format: PCM format
378 guard(mutex)(&substream->pcm->open_mutex); in snd_pcm_substream_proc_hw_params_read()
413 guard(mutex)(&substream->pcm->open_mutex); in snd_pcm_substream_proc_sw_params_read()
441 guard(mutex)(&substream->pcm->open_mutex); in snd_pcm_substream_proc_status_read()
498 struct snd_pcm *pcm = pstr->pcm; in snd_pcm_stream_proc_init() local
502 sprintf(name, "pcm%i%c", pcm->device, in snd_pcm_stream_proc_init()
504 entry = snd_info_create_card_entry(pcm->card, name, in snd_pcm_stream_proc_init()
505 pcm->card->proc_root); in snd_pcm_stream_proc_init()
510 entry = snd_info_create_card_entry(pcm->card, "info", pstr->proc_root); in snd_pcm_stream_proc_init()
514 entry = snd_info_create_card_entry(pcm->card, "xrun_debug", in snd_pcm_stream_proc_init()
540 entry = snd_info_create_card_entry(substream->pcm->card, name, in create_substream_info_entry()
553 card = substream->pcm->card; in snd_pcm_substream_proc_init()
600 if (!pstr->pcm->no_device_suspend) in do_pcm_suspend()
601 snd_pcm_suspend_all(pstr->pcm); in do_pcm_suspend()
610 /* device type for PCM -- basically only for passing PM callbacks */
612 .name = "pcm",
617 * snd_pcm_new_stream - create a new PCM stream
618 * @pcm: the pcm instance
622 * Creates a new stream for the pcm.
623 * The corresponding stream on the pcm must have been empty before
629 int snd_pcm_new_stream(struct snd_pcm *pcm, int stream, int substream_count) in snd_pcm_new_stream() argument
632 struct snd_pcm_str *pstr = &pcm->streams[stream]; in snd_pcm_new_stream()
639 pstr->pcm = pcm; in snd_pcm_new_stream()
644 err = snd_device_alloc(&pstr->dev, pcm->card); in snd_pcm_new_stream()
647 dev_set_name(pstr->dev, "pcmC%iD%i%c", pcm->card->number, pcm->device, in snd_pcm_new_stream()
653 if (!pcm->internal) { in snd_pcm_new_stream()
656 pcm_err(pcm, "Error in snd_pcm_stream_proc_init\n"); in snd_pcm_new_stream()
665 substream->pcm = pcm; in snd_pcm_new_stream()
676 if (!pcm->internal) { in snd_pcm_new_stream()
679 pcm_err(pcm, in snd_pcm_new_stream()
703 struct snd_pcm *pcm; in _snd_pcm_new() local
718 pcm = kzalloc(sizeof(*pcm), GFP_KERNEL); in _snd_pcm_new()
719 if (!pcm) in _snd_pcm_new()
721 pcm->card = card; in _snd_pcm_new()
722 pcm->device = device; in _snd_pcm_new()
723 pcm->internal = internal; in _snd_pcm_new()
724 mutex_init(&pcm->open_mutex); in _snd_pcm_new()
725 init_waitqueue_head(&pcm->open_wait); in _snd_pcm_new()
726 INIT_LIST_HEAD(&pcm->list); in _snd_pcm_new()
728 strscpy(pcm->id, id, sizeof(pcm->id)); in _snd_pcm_new()
730 err = snd_pcm_new_stream(pcm, SNDRV_PCM_STREAM_PLAYBACK, in _snd_pcm_new()
735 err = snd_pcm_new_stream(pcm, SNDRV_PCM_STREAM_CAPTURE, capture_count); in _snd_pcm_new()
739 err = snd_device_new(card, SNDRV_DEV_PCM, pcm, in _snd_pcm_new()
745 *rpcm = pcm; in _snd_pcm_new()
749 snd_pcm_free(pcm); in _snd_pcm_new()
754 * snd_pcm_new - create a new PCM instance
760 * @rpcm: the pointer to store the new pcm instance
762 * Creates a new PCM instance.
764 * The pcm operators have to be set afterwards to the new instance
778 * snd_pcm_new_internal - create a new internal PCM instance
784 * @rpcm: the pointer to store the new pcm instance
786 * Creates a new internal PCM instance with no userspace device or procfs
787 * entries. This is used by ASoC Back End PCMs in order to create a PCM that
792 * The pcm operators have to be set afterwards to the new instance
809 struct snd_card *card = pstr->pcm->card; in free_chmap()
846 #define pcm_call_notify(pcm, call) \ argument
850 _notify->call(pcm); \
853 #define pcm_call_notify(pcm, call) do {} while (0) argument
856 static int snd_pcm_free(struct snd_pcm *pcm) in snd_pcm_free() argument
858 if (!pcm) in snd_pcm_free()
860 if (!pcm->internal) in snd_pcm_free()
861 pcm_call_notify(pcm, n_unregister); in snd_pcm_free()
862 if (pcm->private_free) in snd_pcm_free()
863 pcm->private_free(pcm); in snd_pcm_free()
864 snd_pcm_lib_preallocate_free_for_all(pcm); in snd_pcm_free()
865 snd_pcm_free_stream(&pcm->streams[SNDRV_PCM_STREAM_PLAYBACK]); in snd_pcm_free()
866 snd_pcm_free_stream(&pcm->streams[SNDRV_PCM_STREAM_CAPTURE]); in snd_pcm_free()
867 kfree(pcm); in snd_pcm_free()
873 struct snd_pcm *pcm = device->device_data; in snd_pcm_dev_free() local
874 return snd_pcm_free(pcm); in snd_pcm_dev_free()
877 int snd_pcm_attach_substream(struct snd_pcm *pcm, int stream, in snd_pcm_attach_substream() argument
888 if (snd_BUG_ON(!pcm || !rsubstream)) in snd_pcm_attach_substream()
894 pstr = &pcm->streams[stream]; in snd_pcm_attach_substream()
898 card = pcm->card; in snd_pcm_attach_substream()
901 if (pcm->info_flags & SNDRV_PCM_INFO_HALF_DUPLEX) { in snd_pcm_attach_substream()
904 for (substream = pcm->streams[opposite].substream; substream; in snd_pcm_attach_substream()
970 substream->private_data = pcm->private_data; in snd_pcm_attach_substream()
996 /* Avoid concurrent access to runtime via PCM timer interface */ in snd_pcm_detach_substream()
1015 struct snd_pcm *pcm = pstr->pcm; in pcm_class_show() local
1024 if (pcm->dev_class > SNDRV_PCM_CLASS_LAST) in pcm_class_show()
1027 str = strs[pcm->dev_class]; in pcm_class_show()
1050 struct snd_pcm *pcm; in snd_pcm_dev_register() local
1054 pcm = device->device_data; in snd_pcm_dev_register()
1057 err = snd_pcm_add(pcm); in snd_pcm_dev_register()
1062 if (pcm->streams[cidx].substream == NULL) in snd_pcm_dev_register()
1072 /* register pcm */ in snd_pcm_dev_register()
1073 err = snd_register_device(devtype, pcm->card, pcm->device, in snd_pcm_dev_register()
1074 &snd_pcm_f_ops[cidx], pcm, in snd_pcm_dev_register()
1075 pcm->streams[cidx].dev); in snd_pcm_dev_register()
1077 list_del_init(&pcm->list); in snd_pcm_dev_register()
1081 for (substream = pcm->streams[cidx].substream; substream; substream = substream->next) in snd_pcm_dev_register()
1085 pcm_call_notify(pcm, n_register); in snd_pcm_dev_register()
1091 struct snd_pcm *pcm = device->device_data; in snd_pcm_dev_disconnect() local
1096 guard(mutex)(&pcm->open_mutex); in snd_pcm_dev_disconnect()
1097 wake_up(&pcm->open_wait); in snd_pcm_dev_disconnect()
1098 list_del_init(&pcm->list); in snd_pcm_dev_disconnect()
1100 for_each_pcm_substream(pcm, cidx, substream) { in snd_pcm_dev_disconnect()
1114 for_each_pcm_substream(pcm, cidx, substream) in snd_pcm_dev_disconnect()
1117 pcm_call_notify(pcm, n_disconnect); in snd_pcm_dev_disconnect()
1119 if (pcm->streams[cidx].dev) in snd_pcm_dev_disconnect()
1120 snd_unregister_device(pcm->streams[cidx].dev); in snd_pcm_dev_disconnect()
1121 free_chmap(&pcm->streams[cidx]); in snd_pcm_dev_disconnect()
1129 * @notify: PCM notify list
1133 * called for each registered PCM devices. This exists only for PCM OSS
1140 struct snd_pcm *pcm; in snd_pcm_notify() local
1150 list_for_each_entry(pcm, &snd_pcm_devices, list) in snd_pcm_notify()
1151 notify->n_unregister(pcm); in snd_pcm_notify()
1154 list_for_each_entry(pcm, &snd_pcm_devices, list) in snd_pcm_notify()
1155 notify->n_register(pcm); in snd_pcm_notify()
1170 struct snd_pcm *pcm; in snd_pcm_proc_read() local
1173 list_for_each_entry(pcm, &snd_pcm_devices, list) { in snd_pcm_proc_read()
1175 pcm->card->number, pcm->device, pcm->id, pcm->name); in snd_pcm_proc_read()
1176 if (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream) in snd_pcm_proc_read()
1178 pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream_count); in snd_pcm_proc_read()
1179 if (pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream) in snd_pcm_proc_read()
1181 pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream_count); in snd_pcm_proc_read()
1192 entry = snd_info_create_module_entry(THIS_MODULE, "pcm", NULL); in snd_pcm_proc_init()