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()
106 struct snd_pcm *pcm; in snd_pcm_control_ioctl() local
122 pcm = snd_pcm_get(card, device); in snd_pcm_control_ioctl()
123 if (pcm == NULL) { in snd_pcm_control_ioctl()
127 pstr = &pcm->streams[stream]; in snd_pcm_control_ioctl()
144 mutex_lock(&pcm->open_mutex); in snd_pcm_control_ioctl()
146 mutex_unlock(&pcm->open_mutex); in snd_pcm_control_ioctl()
221 * snd_pcm_format_name - Return a name string for the given PCM format
222 * @format: PCM format
392 mutex_lock(&substream->pcm->open_mutex); in snd_pcm_substream_proc_hw_params_read()
420 mutex_unlock(&substream->pcm->open_mutex); in snd_pcm_substream_proc_hw_params_read()
429 mutex_lock(&substream->pcm->open_mutex); in snd_pcm_substream_proc_sw_params_read()
448 mutex_unlock(&substream->pcm->open_mutex); in snd_pcm_substream_proc_sw_params_read()
459 mutex_lock(&substream->pcm->open_mutex); in snd_pcm_substream_proc_status_read()
484 mutex_unlock(&substream->pcm->open_mutex); in snd_pcm_substream_proc_status_read()
515 struct snd_pcm *pcm = pstr->pcm; in snd_pcm_stream_proc_init() local
519 sprintf(name, "pcm%i%c", pcm->device, in snd_pcm_stream_proc_init()
521 entry = snd_info_create_card_entry(pcm->card, name, in snd_pcm_stream_proc_init()
522 pcm->card->proc_root); in snd_pcm_stream_proc_init()
527 entry = snd_info_create_card_entry(pcm->card, "info", pstr->proc_root); in snd_pcm_stream_proc_init()
531 entry = snd_info_create_card_entry(pcm->card, "xrun_debug", in snd_pcm_stream_proc_init()
557 entry = snd_info_create_card_entry(substream->pcm->card, name, in create_substream_info_entry()
570 card = substream->pcm->card; in snd_pcm_substream_proc_init()
617 if (!pstr->pcm->no_device_suspend) in do_pcm_suspend()
618 snd_pcm_suspend_all(pstr->pcm); in do_pcm_suspend()
627 /* device type for PCM -- basically only for passing PM callbacks */
629 .name = "pcm",
634 * snd_pcm_new_stream - create a new PCM stream
635 * @pcm: the pcm instance
639 * Creates a new stream for the pcm.
640 * The corresponding stream on the pcm must have been empty before
646 int snd_pcm_new_stream(struct snd_pcm *pcm, int stream, int substream_count) in snd_pcm_new_stream() argument
649 struct snd_pcm_str *pstr = &pcm->streams[stream]; in snd_pcm_new_stream()
656 pstr->pcm = pcm; in snd_pcm_new_stream()
661 err = snd_device_alloc(&pstr->dev, pcm->card); in snd_pcm_new_stream()
664 dev_set_name(pstr->dev, "pcmC%iD%i%c", pcm->card->number, pcm->device, in snd_pcm_new_stream()
670 if (!pcm->internal) { in snd_pcm_new_stream()
673 pcm_err(pcm, "Error in snd_pcm_stream_proc_init\n"); in snd_pcm_new_stream()
682 substream->pcm = pcm; in snd_pcm_new_stream()
693 if (!pcm->internal) { in snd_pcm_new_stream()
696 pcm_err(pcm, in snd_pcm_new_stream()
720 struct snd_pcm *pcm; in _snd_pcm_new() local
735 pcm = kzalloc(sizeof(*pcm), GFP_KERNEL); in _snd_pcm_new()
736 if (!pcm) in _snd_pcm_new()
738 pcm->card = card; in _snd_pcm_new()
739 pcm->device = device; in _snd_pcm_new()
740 pcm->internal = internal; in _snd_pcm_new()
741 mutex_init(&pcm->open_mutex); in _snd_pcm_new()
742 init_waitqueue_head(&pcm->open_wait); in _snd_pcm_new()
743 INIT_LIST_HEAD(&pcm->list); in _snd_pcm_new()
745 strscpy(pcm->id, id, sizeof(pcm->id)); in _snd_pcm_new()
747 err = snd_pcm_new_stream(pcm, SNDRV_PCM_STREAM_PLAYBACK, in _snd_pcm_new()
752 err = snd_pcm_new_stream(pcm, SNDRV_PCM_STREAM_CAPTURE, capture_count); in _snd_pcm_new()
756 err = snd_device_new(card, SNDRV_DEV_PCM, pcm, in _snd_pcm_new()
762 *rpcm = pcm; in _snd_pcm_new()
766 snd_pcm_free(pcm); in _snd_pcm_new()
771 * snd_pcm_new - create a new PCM instance
777 * @rpcm: the pointer to store the new pcm instance
779 * Creates a new PCM instance.
781 * The pcm operators have to be set afterwards to the new instance
795 * snd_pcm_new_internal - create a new internal PCM instance
801 * @rpcm: the pointer to store the new pcm instance
803 * Creates a new internal PCM instance with no userspace device or procfs
804 * entries. This is used by ASoC Back End PCMs in order to create a PCM that
809 * The pcm operators have to be set afterwards to the new instance
826 struct snd_card *card = pstr->pcm->card; in free_chmap()
863 #define pcm_call_notify(pcm, call) \ argument
867 _notify->call(pcm); \
870 #define pcm_call_notify(pcm, call) do {} while (0) argument
873 static int snd_pcm_free(struct snd_pcm *pcm) in snd_pcm_free() argument
875 if (!pcm) in snd_pcm_free()
877 if (!pcm->internal) in snd_pcm_free()
878 pcm_call_notify(pcm, n_unregister); in snd_pcm_free()
879 if (pcm->private_free) in snd_pcm_free()
880 pcm->private_free(pcm); in snd_pcm_free()
881 snd_pcm_lib_preallocate_free_for_all(pcm); in snd_pcm_free()
882 snd_pcm_free_stream(&pcm->streams[SNDRV_PCM_STREAM_PLAYBACK]); in snd_pcm_free()
883 snd_pcm_free_stream(&pcm->streams[SNDRV_PCM_STREAM_CAPTURE]); in snd_pcm_free()
884 kfree(pcm); in snd_pcm_free()
890 struct snd_pcm *pcm = device->device_data; in snd_pcm_dev_free() local
891 return snd_pcm_free(pcm); in snd_pcm_dev_free()
894 int snd_pcm_attach_substream(struct snd_pcm *pcm, int stream, in snd_pcm_attach_substream() argument
905 if (snd_BUG_ON(!pcm || !rsubstream)) in snd_pcm_attach_substream()
911 pstr = &pcm->streams[stream]; in snd_pcm_attach_substream()
915 card = pcm->card; in snd_pcm_attach_substream()
918 if (pcm->info_flags & SNDRV_PCM_INFO_HALF_DUPLEX) { in snd_pcm_attach_substream()
921 for (substream = pcm->streams[opposite].substream; substream; in snd_pcm_attach_substream()
987 substream->private_data = pcm->private_data; in snd_pcm_attach_substream()
1010 /* Avoid concurrent access to runtime via PCM timer interface */ in snd_pcm_detach_substream()
1030 struct snd_pcm *pcm = pstr->pcm; in pcm_class_show() local
1039 if (pcm->dev_class > SNDRV_PCM_CLASS_LAST) in pcm_class_show()
1042 str = strs[pcm->dev_class]; in pcm_class_show()
1065 struct snd_pcm *pcm; in snd_pcm_dev_register() local
1069 pcm = device->device_data; in snd_pcm_dev_register()
1072 err = snd_pcm_add(pcm); in snd_pcm_dev_register()
1077 if (pcm->streams[cidx].substream == NULL) in snd_pcm_dev_register()
1087 /* register pcm */ in snd_pcm_dev_register()
1088 err = snd_register_device(devtype, pcm->card, pcm->device, in snd_pcm_dev_register()
1089 &snd_pcm_f_ops[cidx], pcm, in snd_pcm_dev_register()
1090 pcm->streams[cidx].dev); in snd_pcm_dev_register()
1092 list_del_init(&pcm->list); in snd_pcm_dev_register()
1096 for (substream = pcm->streams[cidx].substream; substream; substream = substream->next) in snd_pcm_dev_register()
1100 pcm_call_notify(pcm, n_register); in snd_pcm_dev_register()
1109 struct snd_pcm *pcm = device->device_data; in snd_pcm_dev_disconnect() local
1114 mutex_lock(&pcm->open_mutex); in snd_pcm_dev_disconnect()
1115 wake_up(&pcm->open_wait); in snd_pcm_dev_disconnect()
1116 list_del_init(&pcm->list); in snd_pcm_dev_disconnect()
1118 for_each_pcm_substream(pcm, cidx, substream) { in snd_pcm_dev_disconnect()
1132 for_each_pcm_substream(pcm, cidx, substream) in snd_pcm_dev_disconnect()
1135 pcm_call_notify(pcm, n_disconnect); in snd_pcm_dev_disconnect()
1137 if (pcm->streams[cidx].dev) in snd_pcm_dev_disconnect()
1138 snd_unregister_device(pcm->streams[cidx].dev); in snd_pcm_dev_disconnect()
1139 free_chmap(&pcm->streams[cidx]); in snd_pcm_dev_disconnect()
1141 mutex_unlock(&pcm->open_mutex); in snd_pcm_dev_disconnect()
1149 * @notify: PCM notify list
1153 * called for each registered PCM devices. This exists only for PCM OSS
1160 struct snd_pcm *pcm; in snd_pcm_notify() local
1170 list_for_each_entry(pcm, &snd_pcm_devices, list) in snd_pcm_notify()
1171 notify->n_unregister(pcm); in snd_pcm_notify()
1174 list_for_each_entry(pcm, &snd_pcm_devices, list) in snd_pcm_notify()
1175 notify->n_register(pcm); in snd_pcm_notify()
1191 struct snd_pcm *pcm; in snd_pcm_proc_read() local
1194 list_for_each_entry(pcm, &snd_pcm_devices, list) { in snd_pcm_proc_read()
1196 pcm->card->number, pcm->device, pcm->id, pcm->name); in snd_pcm_proc_read()
1197 if (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream) in snd_pcm_proc_read()
1199 pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream_count); in snd_pcm_proc_read()
1200 if (pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream) in snd_pcm_proc_read()
1202 pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream_count); in snd_pcm_proc_read()
1214 entry = snd_info_create_module_entry(THIS_MODULE, "pcm", NULL); in snd_pcm_proc_init()