From 7a46c07230b8d8108c0e8e80df4522d0ac116538 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:28:17 +0200 Subject: Adding upstream version 0.3.65. Signed-off-by: Daniel Baumann --- spa/plugins/alsa/alsa-pcm-device.c | 581 +++++++++++++++++++++++++++++++++++++ 1 file changed, 581 insertions(+) create mode 100644 spa/plugins/alsa/alsa-pcm-device.c (limited to 'spa/plugins/alsa/alsa-pcm-device.c') diff --git a/spa/plugins/alsa/alsa-pcm-device.c b/spa/plugins/alsa/alsa-pcm-device.c new file mode 100644 index 0000000..984f1d0 --- /dev/null +++ b/spa/plugins/alsa/alsa-pcm-device.c @@ -0,0 +1,581 @@ +/* Spa ALSA Device + * + * Copyright © 2018 Wim Taymans + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + */ + +#include +#include +#include +#include +#include +#include + +#include + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "alsa.h" + +#define MAX_DEVICES 64 + +static const char default_device[] = "hw:0"; + +struct props { + char device[64]; +}; + +static void reset_props(struct props *props) +{ + strncpy(props->device, default_device, 64); +} + +struct impl { + struct spa_handle handle; + struct spa_device device; + + struct spa_log *log; + + struct spa_hook_list hooks; + + struct props props; + uint32_t n_nodes; + uint32_t n_capture; + uint32_t n_playback; + + uint32_t profile; +}; + +static const char *get_stream(snd_pcm_info_t *pcminfo) +{ + switch (snd_pcm_info_get_stream(pcminfo)) { + case SND_PCM_STREAM_PLAYBACK: + return "playback"; + case SND_PCM_STREAM_CAPTURE: + return "capture"; + default: + return "unknown"; + } +} + +static const char *get_class(snd_pcm_info_t *pcminfo) +{ + switch (snd_pcm_info_get_class(pcminfo)) { + case SND_PCM_CLASS_GENERIC: + return "generic"; + case SND_PCM_CLASS_MULTI: + return "multichannel"; + case SND_PCM_CLASS_MODEM: + return "modem"; + case SND_PCM_CLASS_DIGITIZER: + return "digitizer"; + default: + return "unknown"; + } +} + +static const char *get_subclass(snd_pcm_info_t *pcminfo) +{ + switch (snd_pcm_info_get_subclass(pcminfo)) { + case SND_PCM_SUBCLASS_GENERIC_MIX: + return "generic-mix"; + case SND_PCM_SUBCLASS_MULTI_MIX: + return "multichannel-mix"; + default: + return "unknown"; + } +} + +static int emit_node(struct impl *this, snd_ctl_card_info_t *cardinfo, snd_pcm_info_t *pcminfo, uint32_t id) +{ + struct spa_dict_item items[12]; + char device_name[128], path[180]; + char sync_name[128], dev[16], subdev[16], card[16]; + struct spa_device_object_info info; + snd_pcm_sync_id_t sync_id; + const char *stream; + + info = SPA_DEVICE_OBJECT_INFO_INIT(); + info.type = SPA_TYPE_INTERFACE_Node; + + if (snd_pcm_info_get_stream(pcminfo) == SND_PCM_STREAM_PLAYBACK) { + info.factory_name = SPA_NAME_API_ALSA_PCM_SINK; + stream = "playback"; + } else { + info.factory_name = SPA_NAME_API_ALSA_PCM_SOURCE; + stream = "capture"; + } + + info.change_mask = SPA_DEVICE_OBJECT_CHANGE_MASK_PROPS; + + snprintf(card, sizeof(card), "%d", snd_pcm_info_get_card(pcminfo)); + snprintf(dev, sizeof(dev), "%d", snd_pcm_info_get_device(pcminfo)); + snprintf(subdev, sizeof(subdev), "%d", snd_pcm_info_get_subdevice(pcminfo)); + snprintf(device_name, sizeof(device_name), "%s,%s", this->props.device, dev); + snprintf(path, sizeof(path), "alsa:pcm:%s:%s:%s", snd_ctl_card_info_get_id(cardinfo), dev, stream); + items[0] = SPA_DICT_ITEM_INIT(SPA_KEY_OBJECT_PATH, path); + items[1] = SPA_DICT_ITEM_INIT(SPA_KEY_API_ALSA_PATH, device_name); + items[2] = SPA_DICT_ITEM_INIT(SPA_KEY_API_ALSA_PCM_CARD, card); + items[3] = SPA_DICT_ITEM_INIT(SPA_KEY_API_ALSA_PCM_DEVICE, dev); + items[4] = SPA_DICT_ITEM_INIT(SPA_KEY_API_ALSA_PCM_SUBDEVICE, subdev); + items[5] = SPA_DICT_ITEM_INIT(SPA_KEY_API_ALSA_PCM_STREAM, get_stream(pcminfo)); + items[6] = SPA_DICT_ITEM_INIT(SPA_KEY_API_ALSA_PCM_ID, snd_pcm_info_get_id(pcminfo)); + items[7] = SPA_DICT_ITEM_INIT(SPA_KEY_API_ALSA_PCM_NAME, snd_pcm_info_get_name(pcminfo)); + items[8] = SPA_DICT_ITEM_INIT(SPA_KEY_API_ALSA_PCM_SUBNAME, snd_pcm_info_get_subdevice_name(pcminfo)); + items[9] = SPA_DICT_ITEM_INIT(SPA_KEY_API_ALSA_PCM_CLASS, get_class(pcminfo)); + items[10] = SPA_DICT_ITEM_INIT(SPA_KEY_API_ALSA_PCM_SUBCLASS, get_subclass(pcminfo)); + sync_id = snd_pcm_info_get_sync(pcminfo); + snprintf(sync_name, sizeof(sync_name), "%08x:%08x:%08x:%08x", + sync_id.id32[0], sync_id.id32[1], sync_id.id32[2], sync_id.id32[3]); + items[11] = SPA_DICT_ITEM_INIT(SPA_KEY_API_ALSA_PCM_SYNC_ID, sync_name); + info.props = &SPA_DICT_INIT_ARRAY(items); + + spa_device_emit_object_info(&this->hooks, id, &info); + + return 0; +} + +static int activate_profile(struct impl *this, snd_ctl_t *ctl_hndl, uint32_t id) +{ + int err = 0, dev; + uint32_t i, n_cap, n_play; + snd_pcm_info_t *pcminfo; + snd_ctl_card_info_t *cardinfo; + + spa_log_debug(this->log, "profile %d", id); + this->profile = id; + + snd_ctl_card_info_alloca(&cardinfo); + if ((err = snd_ctl_card_info(ctl_hndl, cardinfo)) < 0) { + spa_log_error(this->log, "error card info: %s", snd_strerror(err)); + return err; + } + + for (i = 0; i < this->n_nodes; i++) + spa_device_emit_object_info(&this->hooks, i, NULL); + + this->n_nodes = this->n_capture = this->n_playback = 0; + + if (id == 0) + return 0; + + snd_pcm_info_alloca(&pcminfo); + dev = -1; + i = n_cap = n_play = 0; + while (1) { + if ((err = snd_ctl_pcm_next_device(ctl_hndl, &dev)) < 0) { + spa_log_error(this->log, "error iterating devices: %s", snd_strerror(err)); + break; + } + if (dev < 0) + break; + + snd_pcm_info_set_device(pcminfo, dev); + snd_pcm_info_set_subdevice(pcminfo, 0); + + snd_pcm_info_set_stream(pcminfo, SND_PCM_STREAM_PLAYBACK); + if ((err = snd_ctl_pcm_info(ctl_hndl, pcminfo)) < 0) { + if (err != -ENOENT) + spa_log_error(this->log, "error pcm info: %s", snd_strerror(err)); + } + if (err >= 0) { + n_play++; + emit_node(this, cardinfo, pcminfo, i++); + } + + snd_pcm_info_set_stream(pcminfo, SND_PCM_STREAM_CAPTURE); + if ((err = snd_ctl_pcm_info(ctl_hndl, pcminfo)) < 0) { + if (err != -ENOENT) + spa_log_error(this->log, "error pcm info: %s", snd_strerror(err)); + } + if (err >= 0) { + n_cap++; + emit_node(this, cardinfo, pcminfo, i++); + } + } + this->n_capture = n_cap; + this->n_playback = n_play; + this->n_nodes = i; + return err; +} + +static int set_profile(struct impl *this, uint32_t id) +{ + snd_ctl_t *ctl_hndl; + int err; + + spa_log_debug(this->log, "open card %s", this->props.device); + if ((err = snd_ctl_open(&ctl_hndl, this->props.device, 0)) < 0) { + spa_log_error(this->log, "can't open control for card %s: %s", + this->props.device, snd_strerror(err)); + return err; + } + + err = activate_profile(this, ctl_hndl, id); + + spa_log_debug(this->log, "close card %s", this->props.device); + snd_ctl_close(ctl_hndl); + + return err; +} + +static int emit_info(struct impl *this, bool full) +{ + int err = 0; + struct spa_dict_item items[20]; + uint32_t n_items = 0; + snd_ctl_t *ctl_hndl; + snd_ctl_card_info_t *info; + struct spa_device_info dinfo; + struct spa_param_info params[2]; + char path[128]; + + spa_log_debug(this->log, "open card %s", this->props.device); + if ((err = snd_ctl_open(&ctl_hndl, this->props.device, 0)) < 0) { + spa_log_error(this->log, "can't open control for card %s: %s", + this->props.device, snd_strerror(err)); + return err; + } + + snd_ctl_card_info_alloca(&info); + if ((err = snd_ctl_card_info(ctl_hndl, info)) < 0) { + spa_log_error(this->log, "error hardware info: %s", snd_strerror(err)); + goto exit; + } + + dinfo = SPA_DEVICE_INFO_INIT(); + + dinfo.change_mask = SPA_DEVICE_CHANGE_MASK_PROPS; + +#define ADD_ITEM(key, value) items[n_items++] = SPA_DICT_ITEM_INIT(key, value) + snprintf(path, sizeof(path), "alsa:pcm:%s", snd_ctl_card_info_get_id(info)); + ADD_ITEM(SPA_KEY_OBJECT_PATH, path); + ADD_ITEM(SPA_KEY_DEVICE_API, "alsa:pcm"); + ADD_ITEM(SPA_KEY_MEDIA_CLASS, "Audio/Device"); + ADD_ITEM(SPA_KEY_API_ALSA_PATH, (char *)this->props.device); + ADD_ITEM(SPA_KEY_API_ALSA_CARD_ID, snd_ctl_card_info_get_id(info)); + ADD_ITEM(SPA_KEY_API_ALSA_CARD_COMPONENTS, snd_ctl_card_info_get_components(info)); + ADD_ITEM(SPA_KEY_API_ALSA_CARD_DRIVER, snd_ctl_card_info_get_driver(info)); + ADD_ITEM(SPA_KEY_API_ALSA_CARD_NAME, snd_ctl_card_info_get_name(info)); + ADD_ITEM(SPA_KEY_API_ALSA_CARD_LONGNAME, snd_ctl_card_info_get_longname(info)); + ADD_ITEM(SPA_KEY_API_ALSA_CARD_MIXERNAME, snd_ctl_card_info_get_mixername(info)); + dinfo.props = &SPA_DICT_INIT(items, n_items); +#undef ADD_ITEM + + dinfo.change_mask |= SPA_DEVICE_CHANGE_MASK_PARAMS; + params[0] = SPA_PARAM_INFO(SPA_PARAM_EnumProfile, SPA_PARAM_INFO_READ); + params[1] = SPA_PARAM_INFO(SPA_PARAM_Profile, SPA_PARAM_INFO_READWRITE); + dinfo.n_params = SPA_N_ELEMENTS(params); + dinfo.params = params; + + spa_device_emit_info(&this->hooks, &dinfo); + + exit: + spa_log_debug(this->log, "close card %s", this->props.device); + snd_ctl_close(ctl_hndl); + return err; +} + +static int impl_add_listener(void *object, + struct spa_hook *listener, + const struct spa_device_events *events, + void *data) +{ + struct impl *this = object; + struct spa_hook_list save; + + spa_return_val_if_fail(this != NULL, -EINVAL); + spa_return_val_if_fail(events != NULL, -EINVAL); + + spa_hook_list_isolate(&this->hooks, &save, listener, events, data); + + if (events->info || events->object_info) + emit_info(this, true); + + spa_hook_list_join(&this->hooks, &save); + + return 0; +} + + +static int impl_sync(void *object, int seq) +{ + struct impl *this = object; + + spa_return_val_if_fail(this != NULL, -EINVAL); + + spa_device_emit_result(&this->hooks, seq, 0, 0, NULL); + + return 0; +} + +static struct spa_pod *build_profile(struct impl *this, struct spa_pod_builder *b, + uint32_t id, uint32_t index) +{ + struct spa_pod_frame f[2]; + const char *name, *desc; + + switch (index) { + case 0: + name = "off"; + desc = "Off"; + break; + case 1: + name = "on"; + desc = "On"; + break; + default: + errno = EINVAL; + return NULL; + } + + spa_pod_builder_push_object(b, &f[0], SPA_TYPE_OBJECT_ParamProfile, id); + spa_pod_builder_add(b, + SPA_PARAM_PROFILE_index, SPA_POD_Int(index), + SPA_PARAM_PROFILE_name, SPA_POD_String(name), + SPA_PARAM_PROFILE_description, SPA_POD_String(desc), + 0); + if (index == 1) { + spa_pod_builder_prop(b, SPA_PARAM_PROFILE_classes, 0); + spa_pod_builder_push_struct(b, &f[1]); + if (this->n_capture) { + spa_pod_builder_add_struct(b, + SPA_POD_String("Audio/Source"), + SPA_POD_Int(this->n_capture)); + } + if (this->n_playback) { + spa_pod_builder_add_struct(b, + SPA_POD_String("Audio/Sink"), + SPA_POD_Int(this->n_playback)); + } + spa_pod_builder_pop(b, &f[1]); + } + return spa_pod_builder_pop(b, &f[0]); + +} +static int impl_enum_params(void *object, int seq, + uint32_t id, uint32_t start, uint32_t num, + const struct spa_pod *filter) +{ + struct impl *this = object; + struct spa_pod *param; + struct spa_pod_builder b = { 0 }; + uint8_t buffer[1024]; + struct spa_result_device_params result; + uint32_t count = 0; + + spa_return_val_if_fail(this != NULL, -EINVAL); + spa_return_val_if_fail(num != 0, -EINVAL); + + result.id = id; + result.next = start; + next: + result.index = result.next++; + + spa_pod_builder_init(&b, buffer, sizeof(buffer)); + + switch (id) { + case SPA_PARAM_EnumProfile: + { + switch (result.index) { + case 0: + case 1: + param = build_profile(this, &b, id, result.index); + break; + default: + return 0; + } + break; + } + case SPA_PARAM_Profile: + { + switch (result.index) { + case 0: + param = build_profile(this, &b, id, this->profile); + break; + default: + return 0; + } + break; + } + default: + return -ENOENT; + } + + if (spa_pod_filter(&b, &result.param, param, filter) < 0) + goto next; + + spa_device_emit_result(&this->hooks, seq, 0, + SPA_RESULT_TYPE_DEVICE_PARAMS, &result); + + if (++count != num) + goto next; + + return 0; +} + +static int impl_set_param(void *object, + uint32_t id, uint32_t flags, + const struct spa_pod *param) +{ + struct impl *this = object; + int res; + + spa_return_val_if_fail(this != NULL, -EINVAL); + + switch (id) { + case SPA_PARAM_Profile: + { + uint32_t idx; + + if ((res = spa_pod_parse_object(param, + SPA_TYPE_OBJECT_ParamProfile, NULL, + SPA_PARAM_PROFILE_index, SPA_POD_Int(&idx))) < 0) { + spa_log_warn(this->log, "can't parse profile"); + spa_debug_log_pod(this->log, SPA_LOG_LEVEL_DEBUG, 0, NULL, param); + return res; + } + + set_profile(this, idx); + break; + } + default: + return -ENOENT; + } + return 0; +} + +static const struct spa_device_methods impl_device = { + SPA_VERSION_DEVICE_METHODS, + .add_listener = impl_add_listener, + .sync = impl_sync, + .enum_params = impl_enum_params, + .set_param = impl_set_param, +}; + +static int impl_get_interface(struct spa_handle *handle, const char *type, void **interface) +{ + struct impl *this; + + spa_return_val_if_fail(handle != NULL, -EINVAL); + spa_return_val_if_fail(interface != NULL, -EINVAL); + + this = (struct impl *) handle; + + if (spa_streq(type, SPA_TYPE_INTERFACE_Device)) + *interface = &this->device; + else + return -ENOENT; + + return 0; +} + +static int impl_clear(struct spa_handle *handle) +{ + return 0; +} + +static size_t +impl_get_size(const struct spa_handle_factory *factory, + const struct spa_dict *params) +{ + return sizeof(struct impl); +} + +static int +impl_init(const struct spa_handle_factory *factory, + struct spa_handle *handle, + const struct spa_dict *info, + const struct spa_support *support, + uint32_t n_support) +{ + struct impl *this; + const char *str; + + spa_return_val_if_fail(factory != NULL, -EINVAL); + spa_return_val_if_fail(handle != NULL, -EINVAL); + + handle->get_interface = impl_get_interface; + handle->clear = impl_clear; + + this = (struct impl *) handle; + + this->log = spa_support_find(support, n_support, SPA_TYPE_INTERFACE_Log); + alsa_log_topic_init(this->log); + + this->device.iface = SPA_INTERFACE_INIT( + SPA_TYPE_INTERFACE_Device, + SPA_VERSION_DEVICE, + &impl_device, this); + spa_hook_list_init(&this->hooks); + + reset_props(&this->props); + + snd_config_update_free_global(); + + if (info && (str = spa_dict_lookup(info, SPA_KEY_API_ALSA_PATH))) + snprintf(this->props.device, 64, "%s", str); + + return 0; +} + +static const struct spa_interface_info impl_interfaces[] = { + {SPA_TYPE_INTERFACE_Device,}, +}; + +static int +impl_enum_interface_info(const struct spa_handle_factory *factory, + const struct spa_interface_info **info, + uint32_t *index) +{ + spa_return_val_if_fail(factory != NULL, -EINVAL); + spa_return_val_if_fail(info != NULL, -EINVAL); + spa_return_val_if_fail(index != NULL, -EINVAL); + + if (*index >= SPA_N_ELEMENTS(impl_interfaces)) + return 0; + + *info = &impl_interfaces[(*index)++]; + return 1; +} + +const struct spa_handle_factory spa_alsa_device_factory = { + SPA_VERSION_HANDLE_FACTORY, + SPA_NAME_API_ALSA_PCM_DEVICE, + NULL, + impl_get_size, + impl_init, + impl_enum_interface_info, +}; -- cgit v1.2.3