diff options
Diffstat (limited to 'pipewire-alsa')
| -rw-r--r-- | pipewire-alsa/alsa-plugins/ctl_pipewire.c | 1335 | ||||
| -rw-r--r-- | pipewire-alsa/alsa-plugins/meson.build | 17 |
2 files changed, 1349 insertions, 3 deletions
diff --git a/pipewire-alsa/alsa-plugins/ctl_pipewire.c b/pipewire-alsa/alsa-plugins/ctl_pipewire.c new file mode 100644 index 00000000..538c9534 --- /dev/null +++ b/pipewire-alsa/alsa-plugins/ctl_pipewire.c @@ -0,0 +1,1335 @@ +/* CTL - PipeWire plugin + * + * Copyright © 2020 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 <alsa/asoundlib.h> +#include <alsa/control_external.h> + +#include <spa/utils/result.h> +#include <spa/param/props.h> +#include <spa/param/audio/format-utils.h> + +#include <pipewire/pipewire.h> +#include <extensions/metadata.h> + +#define NAME "alsa-plugin" + +#define VOLUME_MAX 65536 + +struct volume { + uint32_t channels; + long values[SPA_AUDIO_MAX_CHANNELS]; +}; + +typedef struct { + snd_ctl_ext_t ext; + + struct spa_system *system; + struct pw_thread_loop *mainloop; + + struct pw_context *context; + struct pw_core *core; + struct spa_hook core_listener; + + struct pw_registry *registry; + struct spa_hook registry_listener; + + struct pw_metadata *metadata; + struct spa_hook metadata_listener; + + int fd; + int last_seq; + int pending_seq; + int error; + + uint32_t sink; + int sink_muted; + struct volume sink_volume; + + uint32_t source; + int source_muted; + struct volume source_volume; + + int subscribed; + +#define UPDATE_SINK_VOL (1<<0) +#define UPDATE_SINK_MUTE (1<<1) +#define UPDATE_SOURCE_VOL (1<<2) +#define UPDATE_SOURCE_MUTE (1<<3) + int updated; + + struct spa_list globals; +} snd_ctl_pipewire_t; + +struct global; + +struct global_info { + const char *type; + uint32_t version; + const void *events; + pw_destroy_t destroy; + int (*init) (struct global *g); +}; + +struct global { + struct spa_list link; + + snd_ctl_pipewire_t *ctl; + + struct global_info *ginfo; + + uint32_t id; + uint32_t permissions; + struct pw_properties *props; + + int priority_master; + + struct pw_proxy *proxy; + struct spa_hook proxy_listener; + struct spa_hook object_listener; + + union { + struct { +#define NODE_FLAG_SINK (1<<0) +#define NODE_FLAG_SOURCE (1<<1) +#define NODE_FLAG_DEVICE_VOLUME (1<<2) +#define NODE_FLAG_DEVICE_MUTE (1<<3) + uint32_t flags; + uint32_t device_id; + uint32_t profile_device_id; + int priority; + float volume; + bool mute; + struct volume channel_volume; + } node; + struct { + uint32_t active_route_output; + uint32_t active_route_input; + } device; + }; +}; + +#define SOURCE_VOL_NAME "Capture Volume" +#define SOURCE_MUTE_NAME "Capture Switch" +#define SINK_VOL_NAME "Master Playback Volume" +#define SINK_MUTE_NAME "Master Playback Switch" + +static void do_resync(snd_ctl_pipewire_t *ctl) +{ + ctl->pending_seq = pw_core_sync(ctl->core, PW_ID_CORE, ctl->pending_seq); +} + +static int wait_resync(snd_ctl_pipewire_t *ctl) +{ + do_resync(ctl); + + while (true) { + pw_thread_loop_wait(ctl->mainloop); + + if (ctl->error) + return ctl->error; + + if (ctl->pending_seq == ctl->last_seq) + break; + } + return 0; +} + +static struct global *find_global(snd_ctl_pipewire_t *ctl, uint32_t id, const char *type) +{ + struct global *g; + spa_list_for_each(g, &ctl->globals, link) { + if (g->id == id && + (type == NULL || strcmp(g->ginfo->type, type) == 0)) + return g; + } + return NULL; +} +static struct global *find_best_node(snd_ctl_pipewire_t *ctl, uint32_t flags) +{ + struct global *g, *best = NULL; + spa_list_for_each(g, &ctl->globals, link) { + if ((strcmp(g->ginfo->type, PW_TYPE_INTERFACE_Node) == 0) && + (flags == 0 || (g->node.flags & flags) == flags) && + (best == NULL || best->node.priority < g->node.priority)) + best = g; + } + return best; +} + +static inline int poll_activate(snd_ctl_pipewire_t *ctl) +{ + spa_system_eventfd_write(ctl->system, ctl->fd, 1); + return 1; +} + +static inline int poll_deactivate(snd_ctl_pipewire_t *ctl) +{ + uint64_t val; + spa_system_eventfd_read(ctl->system, ctl->fd, &val); + return 1; +} + +static bool volume_equal(struct volume *a, struct volume *b) +{ + if (a == b) + return true; + if (a->channels != b->channels) + return false; + return memcmp(a->values, b->values, sizeof(float) * a->channels) == 0; +} + +static int pipewire_update_volume(snd_ctl_pipewire_t * ctl) +{ + int changed; + struct global *g; + + if (ctl->sink == 0) + g = find_best_node(ctl, NODE_FLAG_SINK); + else + g = find_global(ctl, ctl->sink, PW_TYPE_INTERFACE_Node); + + if (g) { + ctl->sink = g->id; + if (!!ctl->sink_muted != !!g->node.mute) { + ctl->sink_muted = g->node.mute; + ctl->updated |= UPDATE_SINK_MUTE; + changed = 1; + } + if (!volume_equal(&ctl->sink_volume, &g->node.channel_volume)) { + ctl->sink_volume = g->node.channel_volume; + ctl->updated |= UPDATE_SINK_VOL; + changed = 1; + } + } + + if (ctl->source == 0) + g = find_best_node(ctl, NODE_FLAG_SOURCE); + else + g = find_global(ctl, ctl->source, PW_TYPE_INTERFACE_Node); + + if (g) { + ctl->source = g->id; + if (!!ctl->source_muted != !!g->node.mute) { + ctl->source_muted = g->node.mute; + ctl->updated |= UPDATE_SOURCE_MUTE; + changed = 1; + } + if (!volume_equal(&ctl->source_volume, &g->node.channel_volume)) { + ctl->source_volume = g->node.channel_volume; + ctl->updated |= UPDATE_SOURCE_VOL; + changed = 1; + } + } + + if (changed) + poll_activate(ctl); + + return 0; +} + +static int pipewire_elem_count(snd_ctl_ext_t * ext) +{ + snd_ctl_pipewire_t *ctl = ext->private_data; + int count = 0, err; + + assert(ctl); + + if (!ctl->mainloop) + return -EBADFD; + + pw_thread_loop_lock(ctl->mainloop); + + + err = ctl->error; + if (err < 0) { + count = err; + goto finish; + } + err = pipewire_update_volume(ctl); + if (err < 0) { + count = err; + goto finish; + } + + if (ctl->source) + count += 2; + if (ctl->sink) + count += 2; + +finish: + pw_thread_loop_unlock(ctl->mainloop); + + return count; +} + +static int pipewire_elem_list(snd_ctl_ext_t * ext, unsigned int offset, + snd_ctl_elem_id_t * id) +{ + snd_ctl_pipewire_t *ctl = ext->private_data; + int err; + + assert(ctl); + + if (!ctl->mainloop) + return -EBADFD; + + snd_ctl_elem_id_set_interface(id, SND_CTL_ELEM_IFACE_MIXER); + + pw_thread_loop_lock(ctl->mainloop); + + err = ctl->error; + if (err < 0) + goto finish; + + if (ctl->source) { + if (offset == 0) + snd_ctl_elem_id_set_name(id, SOURCE_VOL_NAME); + else if (offset == 1) + snd_ctl_elem_id_set_name(id, SOURCE_MUTE_NAME); + } else + offset += 2; + + err = 0; +finish: + pw_thread_loop_unlock(ctl->mainloop); + + if (err >= 0) { + if (offset == 2) + snd_ctl_elem_id_set_name(id, SINK_VOL_NAME); + else if (offset == 3) + snd_ctl_elem_id_set_name(id, SINK_MUTE_NAME); + } + + return err; +} + +static snd_ctl_ext_key_t pipewire_find_elem(snd_ctl_ext_t * ext, + const snd_ctl_elem_id_t * id) +{ + const char *name; + unsigned int numid; + + numid = snd_ctl_elem_id_get_numid(id); + if (numid > 0 && numid <= 4) + return numid - 1; + + name = snd_ctl_elem_id_get_name(id); + + if (strcmp(name, SOURCE_VOL_NAME) == 0) + return 0; + if (strcmp(name, SOURCE_MUTE_NAME) == 0) + return 1; + if (strcmp(name, SINK_VOL_NAME) == 0) + return 2; + if (strcmp(name, SINK_MUTE_NAME) == 0) + return 3; + + return SND_CTL_EXT_KEY_NOT_FOUND; +} + +static int pipewire_get_attribute(snd_ctl_ext_t * ext, snd_ctl_ext_key_t key, + int *type, unsigned int *acc, + unsigned int *count) +{ + snd_ctl_pipewire_t *ctl = ext->private_data; + int err = 0; + + if (key > 3) + return -EINVAL; + + assert(ctl); + + if (!ctl->mainloop) + return -EBADFD; + + pw_thread_loop_lock(ctl->mainloop); + + err = ctl->error; + if (err < 0) + goto finish; + + err = pipewire_update_volume(ctl); + if (err < 0) + goto finish; + + if (key & 1) + *type = SND_CTL_ELEM_TYPE_BOOLEAN; + else + *type = SND_CTL_ELEM_TYPE_INTEGER; + + *acc = SND_CTL_EXT_ACCESS_READWRITE; + + if (key == 0) + *count = ctl->source_volume.channels; + else if (key == 2) + *count = ctl->sink_volume.channels; + else + *count = 1; + +finish: + pw_thread_loop_unlock(ctl->mainloop); + + return err; +} + +static int pipewire_get_integer_info(snd_ctl_ext_t * ext, + snd_ctl_ext_key_t key, long *imin, + long *imax, long *istep) +{ + *istep = 1; + *imin = 0; + *imax = VOLUME_MAX; + + return 0; +} + +static int pipewire_read_integer(snd_ctl_ext_t * ext, snd_ctl_ext_key_t key, + long *value) +{ + snd_ctl_pipewire_t *ctl = ext->private_data; + int err = 0; + uint32_t i; + struct volume *vol = NULL; + + assert(ctl); + + if (!ctl->mainloop) + return -EBADFD; + + pw_thread_loop_lock(ctl->mainloop); + + err = ctl->error; + if (err < 0) + goto finish; + + err = pipewire_update_volume(ctl); + if (err < 0) + goto finish; + + switch (key) { + case 0: + vol = &ctl->source_volume; + break; + case 1: + *value = !ctl->source_muted; + break; + case 2: + vol = &ctl->sink_volume; + break; + case 3: + *value = !ctl->sink_muted; + break; + default: + err = -EINVAL; + goto finish; + } + + if (vol) { + for (i = 0; i < vol->channels; i++) + value[i] = vol->values[i]; + } + +finish: + pw_thread_loop_unlock(ctl->mainloop); + + return err; +} + +static struct spa_pod *build_volume_mute(struct spa_pod_builder *b, struct volume *volume, int *mute) +{ + struct spa_pod_frame f[1]; + + spa_pod_builder_push_object(b, &f[0], + SPA_TYPE_OBJECT_Props, SPA_PARAM_Props); + if (volume) { + float volumes[SPA_AUDIO_MAX_CHANNELS]; + uint32_t i, n_volumes = 0; + + n_volumes = volume->channels; + for (i = 0; i < n_volumes; i++) + volumes[i] = volume->values[i] / (float) VOLUME_MAX; + + spa_pod_builder_prop(b, SPA_PROP_channelVolumes, 0); + spa_pod_builder_array(b, sizeof(float), + SPA_TYPE_Float, n_volumes, volumes); + } + if (mute) { + spa_pod_builder_prop(b, SPA_PROP_mute, 0); + spa_pod_builder_bool(b, *mute ? true : false); + } + return spa_pod_builder_pop(b, &f[0]); +} + +static int set_volume_mute(snd_ctl_pipewire_t *ctl, uint32_t node, struct volume *volume, int *mute) +{ + struct global *g, *dg; + uint32_t id = SPA_ID_INVALID, device_id = SPA_ID_INVALID; + char buf[1024]; + struct spa_pod_builder b = SPA_POD_BUILDER_INIT(buf, sizeof(buf)); + struct spa_pod_frame f[2]; + struct spa_pod *param; + + g = find_global(ctl, node, PW_TYPE_INTERFACE_Node); + if (g == NULL) + return -EINVAL; + + if (SPA_FLAG_IS_SET(g->node.flags, NODE_FLAG_DEVICE_VOLUME) && + (dg = find_global(ctl, g->node.device_id, PW_TYPE_INTERFACE_Device)) != NULL) { + if (g->node.flags & NODE_FLAG_SINK) + id = dg->device.active_route_output; + else if (g->node.flags & NODE_FLAG_SOURCE) + id = dg->device.active_route_input; + device_id = g->node.profile_device_id; + } + if (id != SPA_ID_INVALID && device_id != SPA_ID_INVALID) { + if (!SPA_FLAG_IS_SET(dg->permissions, PW_PERM_W | PW_PERM_X)) + return -EPERM; + + spa_pod_builder_push_object(&b, &f[0], + SPA_TYPE_OBJECT_ParamRoute, SPA_PARAM_Route); + spa_pod_builder_add(&b, + SPA_PARAM_ROUTE_index, SPA_POD_Int(id), + SPA_PARAM_ROUTE_device, SPA_POD_Int(device_id), + 0); + + spa_pod_builder_prop(&b, SPA_PARAM_ROUTE_props, 0); + build_volume_mute(&b, volume, mute); + param = spa_pod_builder_pop(&b, &f[0]); + + pw_device_set_param((struct pw_node*)dg->proxy, + SPA_PARAM_Route, 0, param); + } else { + if (!SPA_FLAG_IS_SET(g->permissions, PW_PERM_W | PW_PERM_X)) + return -EPERM; + + param = build_volume_mute(&b, volume, mute); + + pw_node_set_param((struct pw_node*)g->proxy, + SPA_PARAM_Props, 0, param); + } + return 0; +} + +static int pipewire_write_integer(snd_ctl_ext_t * ext, snd_ctl_ext_key_t key, + long *value) +{ + snd_ctl_pipewire_t *ctl = ext->private_data; + int err = 0; + uint32_t i; + struct volume *vol = NULL; + + assert(ctl); + + if (!ctl->mainloop) + return -EBADFD; + + pw_thread_loop_lock(ctl->mainloop); + + err = ctl->error; + if (err < 0) + goto finish; + + err = pipewire_update_volume(ctl); + if (err < 0) + goto finish; + + switch (key) { + case 0: + vol = &ctl->source_volume; + break; + case 1: + if (!!ctl->source_muted == !*value) + goto finish; + ctl->source_muted = !*value; + break; + case 2: + vol = &ctl->sink_volume; + break; + case 3: + if (!!ctl->sink_muted == !*value) + goto finish; + ctl->sink_muted = !*value; + break; + default: + err = -EINVAL; + goto finish; + } + + if (vol) { + for (i = 0; i < vol->channels; i++) + if (value[i] != vol->values[i]) + break; + + if (i == vol->channels) + goto finish; + + for (i = 0; i < vol->channels; i++) + vol->values[i] = value[i]; + + if (key == 0) + set_volume_mute(ctl, ctl->source, vol, NULL); + else + set_volume_mute(ctl, ctl->sink, vol, NULL); + } else { + if (key == 1) + set_volume_mute(ctl, ctl->source, NULL, &ctl->source_muted); + else + set_volume_mute(ctl, ctl->sink, NULL, &ctl->sink_muted); + } + + wait_resync(ctl); + + if (err < 0) + goto finish; + + err = 1; + +finish: + pw_thread_loop_unlock(ctl->mainloop); + + return err; +} + +static void pipewire_subscribe_events(snd_ctl_ext_t * ext, int subscribe) +{ + snd_ctl_pipewire_t *ctl = ext->private_data; + + assert(ctl); + + if (!ctl->mainloop) + return; + + pw_thread_loop_lock(ctl->mainloop); + + ctl->subscribed = !!(subscribe & SND_CTL_EVENT_MASK_VALUE); + + pw_thread_loop_unlock(ctl->mainloop); +} + +static int pipewire_read_event(snd_ctl_ext_t * ext, snd_ctl_elem_id_t * id, + unsigned int *event_mask) +{ + snd_ctl_pipewire_t *ctl = ext->private_data; + int offset; + int err; + + assert(ctl); + + if (!ctl->mainloop) + return -EBADFD; + + pw_thread_loop_lock(ctl->mainloop); + + err = ctl->error; + if (err < 0) + goto finish; + + if (!ctl->updated || !ctl->subscribed) { + err = -EAGAIN; + goto finish; + } + + if (ctl->source) + offset = 2; + else + offset = 0; + + if (ctl->updated & UPDATE_SOURCE_VOL) { + pipewire_elem_list(ext, 0, id); + ctl->updated &= ~UPDATE_SOURCE_VOL; + } else if (ctl->updated & UPDATE_SOURCE_MUTE) { + pipewire_elem_list(ext, 1, id); + ctl->updated &= ~UPDATE_SOURCE_MUTE; + } else if (ctl->updated & UPDATE_SINK_VOL) { + pipewire_elem_list(ext, offset + 0, id); + ctl->updated &= ~UPDATE_SINK_VOL; + } else if (ctl->updated & UPDATE_SINK_MUTE) { + pipewire_elem_list(ext, offset + 1, id); + ctl->updated &= ~UPDATE_SINK_MUTE; + } + + *event_mask = SND_CTL_EVENT_MASK_VALUE; + + if (!ctl->updated) + poll_deactivate(ctl); + + err = 1; + +finish: + pw_thread_loop_unlock(ctl->mainloop); + + return err; +} + +static int pipewire_ctl_poll_revents(snd_ctl_ext_t * ext, struct pollfd *pfd, + unsigned int nfds, + unsigned short *revents) +{ + snd_ctl_pipewire_t *ctl = ext->private_data; + int err = 0; + + assert(ctl); + + if (!ctl->mainloop) + return -EBADFD; + + pw_thread_loop_lock(ctl->mainloop); + + err = ctl->error; + if (err < 0) + goto finish; + + if (ctl->updated) + *revents = POLLIN; + else + *revents = 0; + + err = 0; + +finish: + pw_thread_loop_unlock(ctl->mainloop); + + return err; +} + +static void snd_ctl_pipewire_free(snd_ctl_pipewire_t *ctl) +{ + if (ctl == NULL) + return; + + pw_log_debug(NAME" %p:", ctl); + if (ctl->mainloop) + pw_thread_loop_stop(ctl->mainloop); + if (ctl->registry) + pw_proxy_destroy((struct pw_proxy*)ctl->registry); + if (ctl->context) + pw_context_destroy(ctl->context); + if (ctl->fd >= 0) + spa_system_close(ctl->system, ctl->fd); + if (ctl->mainloop) + pw_thread_loop_destroy(ctl->mainloop); + free(ctl); +} + +static void pipewire_close(snd_ctl_ext_t * ext) +{ + snd_ctl_pipewire_t *ctl = ext->private_data; + snd_ctl_pipewire_free(ctl); +} + +static const snd_ctl_ext_callback_t pipewire_ext_callback = { + .elem_count = pipewire_elem_count, + .elem_list = pipewire_elem_list, + .find_elem = pipewire_find_elem, + .get_attribute = pipewire_get_attribute, + .get_integer_info = pipewire_get_integer_info, + .read_integer = pipewire_read_integer, + .write_integer = pipewire_write_integer, + .subscribe_events = pipewire_subscribe_events, + .read_event = pipewire_read_event, + .poll_revents = pipewire_ctl_poll_revents, + .close = pipewire_close, +}; + +/** device */ +static void device_event_info(void *object, const struct pw_device_info *info) +{ + struct global *g = object; + snd_ctl_pipewire_t *ctl = g->ctl; + uint32_t n; + + pw_log_debug("info"); + + if (info->change_mask & PW_DEVICE_CHANGE_MASK_PARAMS) { + for (n = 0; n < info->n_params; n++) { + if (!(info->params[n].flags & SPA_PARAM_INFO_READ)) + continue; + + switch (info->params[n].id) { + case SPA_PARAM_Route: + pw_device_enum_params((struct pw_device*)g->proxy, + 0, info->params[n].id, 0, -1, NULL); + break; + default: + break; + } + } + + } + do_resync(ctl); +} + +static void parse_props(struct global *g, const struct spa_pod *param, bool device) +{ + struct spa_pod_prop *prop; + struct spa_pod_object *obj = (struct spa_pod_object *) param; + + SPA_POD_OBJECT_FOREACH(obj, prop) { + switch (prop->key) { + case SPA_PROP_volume: + spa_pod_get_float(&prop->value, &g->node.volume); + SPA_FLAG_UPDATE(g->node.flags, NODE_FLAG_DEVICE_VOLUME, device); + break; + case SPA_PROP_mute: + spa_pod_get_bool(&prop->value, &g->node.mute); + SPA_FLAG_UPDATE(g->node.flags, NODE_FLAG_DEVICE_MUTE, device); + break; + case SPA_PROP_channelVolumes: + { + float volumes[SPA_AUDIO_MAX_CHANNELS]; + uint32_t n_volumes, i; + + n_volumes = spa_pod_copy_array(&prop->value, SPA_TYPE_Float, + volumes, SPA_AUDIO_MAX_CHANNELS); + + g->node.channel_volume.channels = n_volumes; + for (i = 0; i < n_volumes; i++) + g->node.channel_volume.values[i] = volumes[i] * VOLUME_MAX; + + SPA_FLAG_UPDATE(g->node.flags, NODE_FLAG_DEVICE_VOLUME, device); + break; + } + default: + break; + } + } +} + +static struct global *find_node_for_route(snd_ctl_pipewire_t *ctl, uint32_t card, uint32_t device) +{ + struct global *n; + spa_list_for_each(n, &ctl->globals, link) { + if (strcmp(n->ginfo->type, PW_TYPE_INTERFACE_Node) == 0 && + (n->node.device_id == card) && + (n->node.profile_device_id == device)) + return n; + } + return NULL; +} + +static void device_event_param(void *object, int seq, + uint32_t id, uint32_t index, uint32_t next, + const struct spa_pod *param) +{ + struct global *g = object; + snd_ctl_pipewire_t *ctl = g->ctl; + + pw_log_debug("param %d", id); + + switch (id) { + case SPA_PARAM_Route: + { + uint32_t index, device; + enum spa_direction direction; + struct spa_pod *props = NULL; + struct global *ng; + + if (spa_pod_parse_object(param, + SPA_TYPE_OBJECT_ParamRoute, NULL, + SPA_PARAM_ROUTE_index, SPA_POD_Int(&index), + SPA_PARAM_ROUTE_direction, SPA_POD_Id(&direction), + SPA_PARAM_ROUTE_device, SPA_POD_Int(&device), + SPA_PARAM_ROUTE_props, SPA_POD_OPT_Pod(&props)) < 0) { + pw_log_warn("device %d: can't parse route", g->id); + return; + } + if (direction == SPA_DIRECTION_OUTPUT) + g->device.active_route_output = index; + else + g->device.active_route_input = index; + + pw_log_debug("device %d: active %s route %d", g->id, + direction == SPA_DIRECTION_OUTPUT ? "output" : "input", + index); + + ng = find_node_for_route(ctl, g->id, device); + if (props && ng) + parse_props(ng, props, true); + break; + } + default: + break; + } +} + +static const struct pw_device_events device_events = { + PW_VERSION_DEVICE_EVENTS, + .info = device_event_info, + .param = device_event_param, +}; + +struct global_info device_info = { + .type = PW_TYPE_INTERFACE_Device, + .version = PW_VERSION_DEVICE, + .events = &device_events, +}; + +/** node */ +static void node_event_info(void *object, const struct pw_node_info *info) +{ + struct global *g = object; + snd_ctl_pipewire_t *ctl = g->ctl; + const char *str; + uint32_t i; + + pw_log_debug("update %d %"PRIu64, g->id, info->change_mask); + + if (info->props && (str = spa_dict_lookup(info->props, "card.profile.device"))) + g->node.profile_device_id = atoi(str); + else + g->node.profile_device_id = SPA_ID_INVALID; + + if (info->props && (str = spa_dict_lookup(info->props, PW_KEY_DEVICE_ID))) + g->node.device_id = atoi(str); + else + g->node.device_id = SPA_ID_INVALID; + + if (info->props && (str = spa_dict_lookup(info->props, PW_KEY_PRIORITY_MASTER))) + g->node.priority = atoi(str); + if (info->props && (str = spa_dict_lookup(info->props, PW_KEY_MEDIA_CLASS))) { + if (strcmp(str, "Audio/Sink") == 0) + g->node.flags |= NODE_FLAG_SINK; + else if (strcmp(str, "Audio/Source") == 0) + g->node.flags |= NODE_FLAG_SOURCE; + } + if (info->change_mask & PW_NODE_CHANGE_MASK_PARAMS) { + for (i = 0; i < info->n_params; i++) { + if (!(info->params[i].flags & SPA_PARAM_INFO_READ)) + continue; + + switch (info->params[i].id) { + case SPA_PARAM_Props: + pw_node_enum_params((struct pw_node*)g->proxy, + 0, info->params[i].id, 0, -1, NULL); + break; + default: + break; + } + } + } + do_resync(ctl); +} + + +static void node_event_param(void *object, int seq, + uint32_t id, uint32_t index, uint32_t next, + const struct spa_pod *param) +{ + struct global *g = object; + pw_log_debug("update param %d %d", g->id, id); + + switch (id) { + case SPA_PARAM_Props: + if (!SPA_FLAG_IS_SET(g->node.flags, NODE_FLAG_DEVICE_VOLUME | NODE_FLAG_DEVICE_MUTE)) + parse_props(g, param, false); + break; + default: + break; + } +} + +static const struct pw_node_events node_events = { + PW_VERSION_NODE_EVENTS, + .info = node_event_info, + .param = node_event_param, +}; + +struct global_info node_info = { + .type = PW_TYPE_INTERFACE_Node, + .version = PW_VERSION_NODE, + .events = &node_events, +}; + +/** metadata */ +static int metadata_property(void *object, + uint32_t subject, + const char *key, + const char *type, + const char *value) +{ + struct global *g = object; + snd_ctl_pipewire_t *ctl = g->ctl; + + if (key) { + if (strcmp(key, "default.audio.sink") == 0) + ctl->sink = value ? (uint32_t)atoi(value) : 0; + if (strcmp(key, "default.audio.source") == 0) + ctl->source = value ? (uint32_t)atoi(value) : 0; + } + return 0; +} + +static int metadata_init(struct global *g) +{ + snd_ctl_pipewire_t *ctl = g->ctl; + ctl->metadata = (struct pw_metadata*)g->proxy; + return 0; +} + +static const struct pw_metadata_events metadata_events = { + PW_VERSION_METADATA_EVENTS, + .property = metadata_property, +}; + +struct global_info metadata_info = { + .type = PW_TYPE_INTERFACE_Metadata, + .version = PW_VERSION_METADATA, + .events = &metadata_events, + .init = metadata_init +}; + +/** proxy */ +static void proxy_removed(void *data) +{ + struct global *g = data; + pw_proxy_destroy(g->proxy); +} + +static void proxy_destroy(void *data) +{ + struct global *g = data; + spa_list_remove(&g->link); + g->proxy = NULL; +} + +static const struct pw_proxy_events proxy_events = { + PW_VERSION_PROXY_EVENTS, + .removed = proxy_removed, + .destroy = proxy_destroy +}; + +static void registry_event_global(void *data, uint32_t id, + uint32_t permissions, const char *type, uint32_t version, + const struct spa_dict *props) +{ + snd_ctl_pipewire_t *ctl = data; + struct global_info *info = NULL; + struct pw_proxy *proxy; + const char *str; + + pw_log_debug("got %d %s", id, type); + + if (strcmp(type, PW_TYPE_INTERFACE_Device) == 0) { + if (props == NULL || + ((str = spa_dict_lookup(props, PW_KEY_MEDIA_CLASS)) == NULL) || + (strcmp(str, "Audio/Device") != 0)) + return; + + pw_log_debug("found device %d", id); + info = &device_info; + } else if (strcmp(type, PW_TYPE_INTERFACE_Node) == 0) { + if (props == NULL || + ((str = spa_dict_lookup(props, PW_KEY_MEDIA_CLASS)) == NULL) || + ((strcmp(str, "Audio/Sink") != 0) && + (strcmp(str, "Audio/Source") != 0))) + return; + + pw_log_debug("found node %d type:%s", id, str); + info = &node_info; + } else if (strcmp(type, PW_TYPE_INTERFACE_Metadata) == 0) { + if (ctl->metadata != NULL) + return; + info = &metadata_info; + } + if (info) { + struct global *g; + + proxy = pw_registry_bind(ctl->registry, + id, info->type, info->version, + sizeof(struct global)); + + g = pw_proxy_get_user_data(proxy); + g->ctl = ctl; + g->ginfo = info; + g->id = id; + g->permissions = permissions; + g->props = props ? pw_properties_new_dict(props) : NULL; + g->proxy = proxy; + spa_list_append(&ctl->globals, &g->link); + + pw_proxy_add_listener(proxy, + &g->proxy_listener, + &proxy_events, g); + + if (info->events) { + pw_proxy_add_object_listener(proxy, + &g->object_listener, + info->events, g); + } + if (info->init) + info->init(g); + + do_resync(ctl); + } +} + +static void registry_event_global_remove(void *data, uint32_t id) +{ + snd_ctl_pipewire_t *ctl = data; + if (ctl->sink == id) + ctl->sink = 0; + if (ctl->source == id) + ctl->source = 0; +} + +static const struct pw_registry_events registry_events = { + PW_VERSION_REGISTRY_EVENTS, + .global = registry_event_global, + .global_remove = registry_event_global_remove, +}; + +static void on_core_error(void *data, uint32_t id, int seq, int res, const char *message) +{ + snd_ctl_pipewire_t *ctl = data; + + pw_log_error(NAME" %p: error id:%u seq:%d res:%d (%s): %s", ctl, + id, seq, res, spa_strerror(res), message); + + if (id == PW_ID_CORE) { + ctl->error = res; + if (ctl->fd != -1) + poll_activate(ctl); + } + pw_thread_loop_signal(ctl->mainloop, false); +} + +static void on_core_done(void *data, uint32_t id, int seq) +{ + snd_ctl_pipewire_t *ctl = data; + + pw_log_debug("done %d %d %d", id, seq, ctl->pending_seq); + + if (id != PW_ID_CORE) + return; + + ctl->last_seq = ctl->pending_seq; + if (seq == ctl->pending_seq) { + pipewire_update_volume(ctl); + pw_thread_loop_signal(ctl->mainloop, false); + } +} + +static const struct pw_core_events core_events = { + PW_VERSION_CORE_EVENTS, + .error = on_core_error, + .done = on_core_done, +}; + + +SPA_EXPORT +SND_CTL_PLUGIN_DEFINE_FUNC(pipewire) +{ + snd_config_iterator_t i, next; + const char *server = NULL; + const char *device = NULL; + const char *source = NULL; + const char *sink = NULL; + const char *fallback_name = NULL; + int err; + const char *str; + struct pw_properties *props = NULL; + snd_ctl_pipewire_t *ctl; + struct pw_loop *loop; + + pw_init(NULL, NULL); + + snd_config_for_each(i, next, conf) { + snd_config_t *n = snd_config_iterator_entry(i); + const char *id; + if (snd_config_get_id(n, &id) < 0) + continue; + if (strcmp(id, "comment") == 0 || strcmp(id, "type") == 0 + || strcmp(id, "hint") == 0) + continue; + if (strcmp(id, "server") == 0) { + if (snd_config_get_string(n, &server) < 0) { + SNDERR("Invalid type for %s", id); + return -EINVAL; + } else if (!*server) { + server = NULL; + } + continue; + } + if (strcmp(id, "device") == 0) { + if (snd_config_get_string(n, &device) < 0) { + SNDERR("Invalid type for %s", id); + return -EINVAL; + } else if (!*device) { + device = NULL; + } + continue; + } + if (strcmp(id, "source") == 0) { + if (snd_config_get_string(n, &source) < 0) { + SNDERR("Invalid type for %s", id); + return -EINVAL; + } else if (!*source) { + source = NULL; + } + continue; + } + if (strcmp(id, "sink") == 0) { + if (snd_config_get_string(n, &sink) < 0) { + SNDERR("Invalid type for %s", id); + return -EINVAL; + } else if (!*sink) { + sink = NULL; + } + continue; + } + if (strcmp(id, "fallback") == 0) { + if (snd_config_get_string(n, &fallback_name) < 0) { + SNDERR("Invalid value for %s", id); + return -EINVAL; + } + continue; + } + SNDERR("Unknown field %s", id); + return -EINVAL; + } + + if (fallback_name && name && !strcmp(name, fallback_name)) + fallback_name = NULL; /* no fallback for the same name */ + + ctl = calloc(1, sizeof(*ctl)); + if (!ctl) + return -ENOMEM; + + spa_list_init(&ctl->globals); + + if (source) + ctl->source = atoi(source); + else if (device) + ctl->source = atoi(device); + + if ((source || device) && !ctl->source) { + err = -EINVAL; + goto error; + } + + if (sink) + ctl->sink = atoi(sink); + else if (device) + ctl->sink = atoi(device); + + if ((sink || device) && !ctl->sink) { + err = -EINVAL; + goto error; + } + + ctl->mainloop = pw_thread_loop_new("alsa-pipewire", NULL); + if (ctl->mainloop == NULL) { + err = -errno; + goto error; + } + loop = pw_thread_loop_get_loop(ctl->mainloop); + + ctl->system = loop->system; + ctl->fd = spa_system_eventfd_create(ctl->system, SPA_FD_CLOEXEC | SPA_FD_NONBLOCK); + if (ctl->fd == -1) { + err = -errno; + goto error; + } + + ctl->context = pw_context_new(loop, NULL, 0); + if (ctl->context == NULL) { + err = -errno; + goto error; + } + + props = pw_properties_new(NULL, NULL); + if (props == NULL) { + err = -errno; + goto error; + } + + str = pw_get_prgname(); + if (str) + pw_properties_setf(props, PW_KEY_APP_NAME, "ALSA plug-in [%s]", str); + else + pw_properties_set(props, PW_KEY_APP_NAME, "ALSA plug-in"); + + if ((err = pw_thread_loop_start(ctl->mainloop)) < 0) + goto error; + + pw_thread_loop_lock(ctl->mainloop); + ctl->core = pw_context_connect(ctl->context, props, 0); + props = NULL; + if (ctl->core == NULL) { + err = -errno; + goto error_unlock; + } + pw_core_add_listener(ctl->core, + &ctl->core_listener, + &core_events, ctl); + + ctl->registry = pw_core_get_registry(ctl->core, PW_VERSION_REGISTRY, 0); + if (ctl->registry == NULL) { + err = -errno; + goto error_unlock; + } + + pw_registry_add_listener(ctl->registry, + &ctl->registry_listener, + ®istry_events, ctl); + + wait_resync(ctl); + + pw_thread_loop_unlock(ctl->mainloop); + + ctl->ext.version = SND_CTL_EXT_VERSION; + ctl->ext.card_idx = 0; + strncpy(ctl->ext.id, "pipewire", sizeof(ctl->ext.id) - 1); + strncpy(ctl->ext.driver, "PW plugin", sizeof(ctl->ext.driver) - 1); + strncpy(ctl->ext.name, "PipeWire", sizeof(ctl->ext.name) - 1); + strncpy(ctl->ext.longname, "PipeWire", sizeof(ctl->ext.longname) - 1); + strncpy(ctl->ext.mixername, "PipeWire", sizeof(ctl->ext.mixername) - 1); + ctl->ext.poll_fd = ctl->fd; + + ctl->ext.callback = &pipewire_ext_callback; + ctl->ext.private_data = ctl; + + err = snd_ctl_ext_create(&ctl->ext, name, mode); + if (err < 0) + goto error; + + *handlep = ctl->ext.handle; + + return 0; + +error_unlock: + pw_thread_loop_unlock(ctl->mainloop); +error: + snd_ctl_pipewire_free(ctl); + pw_log_error("error %d (%s)", err, spa_strerror(err)); + + if (fallback_name) + return snd_ctl_open_fallback(handlep, root, + fallback_name, name, mode); + + return err; +} + +SPA_EXPORT +SND_CTL_PLUGIN_SYMBOL(pipewire); diff --git a/pipewire-alsa/alsa-plugins/meson.build b/pipewire-alsa/alsa-plugins/meson.build index 9777acc8..8b5d6bd9 100644 --- a/pipewire-alsa/alsa-plugins/meson.build +++ b/pipewire-alsa/alsa-plugins/meson.build @@ -1,14 +1,25 @@ -pipewire_alsa_plugin_sources = [ +pipewire_alsa_plugin_pcm_sources = [ 'pcm_pipewire.c', ] +pipewire_alsa_plugin_ctl_sources = [ + 'ctl_pipewire.c', +] pipewire_alsa_plugin_c_args = [ '-DHAVE_CONFIG_H', '-DPIC', ] -pipewire_alsa_plugin = shared_library('asound_module_pcm_pipewire', - pipewire_alsa_plugin_sources, +pipewire_alsa_pcm_plugin = shared_library('asound_module_pcm_pipewire', + pipewire_alsa_plugin_pcm_sources, + c_args : pipewire_alsa_plugin_c_args, + include_directories : [configinc], + dependencies : [pipewire_dep, alsa_dep], + install : true, + install_dir : join_paths(pipewire_libdir, 'alsa-lib'), +) +pipewire_alsa_ctl_plugin = shared_library('asound_module_ctl_pipewire', + pipewire_alsa_plugin_ctl_sources, c_args : pipewire_alsa_plugin_c_args, include_directories : [configinc], dependencies : [pipewire_dep, alsa_dep], |