diff options
author | Pierre Ossman <ossman@cendio.se> | 2006-07-12 16:47:20 +0200 |
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committer | Takashi Iwai <tiwai@suse.de> | 2006-07-12 16:47:20 +0200 |
commit | 9304087e46a38f932959598720d1e048a6e1042a (patch) | |
tree | 627fc036583567f41c747d0b4bef06f847d408d1 /pulse/ctl_pulse.c | |
parent | 65028b0c19c6aa3ba469cbb9d52c56655d3b67b5 (diff) |
Follow Polypaudio/PulseAudio name change
Polypaudio recently changed its name to PulseAudio which affects the
names of libraries of header files. Update the polyp, now pulse, plug-in
to follow this name change.
Signed-off-by: Pierre Ossman <ossman@cendio.se>
Diffstat (limited to 'pulse/ctl_pulse.c')
-rw-r--r-- | pulse/ctl_pulse.c | 722 |
1 files changed, 722 insertions, 0 deletions
diff --git a/pulse/ctl_pulse.c b/pulse/ctl_pulse.c new file mode 100644 index 0000000..06e087f --- /dev/null +++ b/pulse/ctl_pulse.c @@ -0,0 +1,722 @@ +/* + * ALSA <-> PulseAudio mixer control plugin + * + * Copyright (c) 2006 by Pierre Ossman <ossman@cendio.se> + * + * This library is free software; you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as + * published by the Free Software Foundation; either version 2.1 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include <sys/poll.h> + +#include <alsa/asoundlib.h> +#include <alsa/control_external.h> + +#include "pulse.h" + +typedef struct snd_ctl_pulse { + snd_ctl_ext_t ext; + + snd_pulse_t *p; + + char *source; + char *sink; + + pa_cvolume sink_volume; + pa_cvolume source_volume; + + int sink_muted; + int source_muted; + + int subscribed; + int updated; +} snd_ctl_pulse_t; + +#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" + +#define UPDATE_SINK_VOL 0x01 +#define UPDATE_SINK_MUTE 0x02 +#define UPDATE_SOURCE_VOL 0x04 +#define UPDATE_SOURCE_MUTE 0x08 + +static void sink_info_cb(pa_context *c, const pa_sink_info *i, int is_last, void *userdata) +{ + snd_ctl_pulse_t *ctl = (snd_ctl_pulse_t*)userdata; + int chan; + + assert(ctl); + + if (is_last) { + pa_threaded_mainloop_signal(ctl->p->mainloop, 0); + return; + } + + assert(i); + + if (!!ctl->sink_muted != !!i->mute) { + ctl->sink_muted = i->mute; + ctl->updated |= UPDATE_SINK_MUTE; + pulse_poll_activate(ctl->p); + } + + if (ctl->sink_volume.channels == i->volume.channels) { + for (chan = 0;chan < ctl->sink_volume.channels;chan++) + if (i->volume.values[chan] != ctl->sink_volume.values[chan]) + break; + + if (chan == ctl->sink_volume.channels) + return; + + ctl->updated |= UPDATE_SINK_VOL; + pulse_poll_activate(ctl->p); + } + + memcpy(&ctl->sink_volume, &i->volume, sizeof(pa_cvolume)); +} + +static void source_info_cb(pa_context *c, const pa_source_info *i, int is_last, void *userdata) +{ + snd_ctl_pulse_t *ctl = (snd_ctl_pulse_t*)userdata; + int chan; + + assert(ctl); + + if (is_last) { + pa_threaded_mainloop_signal(ctl->p->mainloop, 0); + return; + } + + assert(i); + + if (!!ctl->source_muted != !!i->mute) { + ctl->source_muted = i->mute; + ctl->updated |= UPDATE_SOURCE_MUTE; + pulse_poll_activate(ctl->p); + } + + if (ctl->source_volume.channels == i->volume.channels) { + for (chan = 0;chan < ctl->source_volume.channels;chan++) + if (i->volume.values[chan] != ctl->source_volume.values[chan]) + break; + + if (chan == ctl->source_volume.channels) + return; + + ctl->updated |= UPDATE_SOURCE_VOL; + pulse_poll_activate(ctl->p); + } + + memcpy(&ctl->source_volume, &i->volume, sizeof(pa_cvolume)); +} + +static void event_cb(pa_context *c, pa_subscription_event_type_t t, + uint32_t index, void *userdata) +{ + snd_ctl_pulse_t *ctl = (snd_ctl_pulse_t*)userdata; + pa_operation *o; + + assert(ctl && ctl->p && ctl->p->context); + + o = pa_context_get_sink_info_by_name(ctl->p->context, ctl->sink, + sink_info_cb, ctl); + pa_operation_unref(o); + + o = pa_context_get_source_info_by_name(ctl->p->context, ctl->source, + source_info_cb, ctl); + pa_operation_unref(o); +} + +static int pulse_update_volume(snd_ctl_pulse_t *ctl) +{ + int err; + pa_operation *o; + + assert(ctl && ctl->p && ctl->p->context); + + o = pa_context_get_sink_info_by_name(ctl->p->context, ctl->sink, + sink_info_cb, ctl); + err = pulse_wait_operation(ctl->p, o); + pa_operation_unref(o); + if (err < 0) + return err; + + o = pa_context_get_source_info_by_name(ctl->p->context, ctl->source, + source_info_cb, ctl); + err = pulse_wait_operation(ctl->p, o); + pa_operation_unref(o); + if (err < 0) + return err; + + return 0; +} + +static int pulse_elem_count(snd_ctl_ext_t *ext) +{ + snd_ctl_pulse_t *ctl = ext->private_data; + int count = 0; + + assert(ctl); + + pa_threaded_mainloop_lock(ctl->p->mainloop); + + if (ctl->source) + count += 2; + if (ctl->sink) + count += 2; + + pa_threaded_mainloop_unlock(ctl->p->mainloop); + + return count; +} + +static int pulse_elem_list(snd_ctl_ext_t *ext, unsigned int offset, + snd_ctl_elem_id_t *id) +{ + snd_ctl_pulse_t *ctl = ext->private_data; + + assert(ctl); + + snd_ctl_elem_id_set_interface(id, SND_CTL_ELEM_IFACE_MIXER); + + pa_threaded_mainloop_lock(ctl->p->mainloop); + + 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; + + pa_threaded_mainloop_unlock(ctl->p->mainloop); + + 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 0; +} + +static snd_ctl_ext_key_t pulse_find_elem(snd_ctl_ext_t *ext, + const snd_ctl_elem_id_t *id) +{ + const char *name; + + 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 pulse_get_attribute(snd_ctl_ext_t *ext, snd_ctl_ext_key_t key, + int *type, unsigned int *acc, unsigned int *count) +{ + snd_ctl_pulse_t *ctl = ext->private_data; + int err = 0; + + if (key > 3) + return -EINVAL; + + assert(ctl); + assert(ctl->p); + + pa_threaded_mainloop_lock(ctl->p->mainloop); + + err = pulse_check_connection(ctl->p); + if (err < 0) + goto finish; + + err = pulse_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: + pa_threaded_mainloop_unlock(ctl->p->mainloop); + + return err; +} + +static int pulse_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 = PA_VOLUME_NORM; + + return 0; +} + +static int pulse_read_integer(snd_ctl_ext_t *ext, snd_ctl_ext_key_t key, + long *value) +{ + snd_ctl_pulse_t *ctl = ext->private_data; + int err = 0, i; + pa_cvolume *vol = NULL; + + assert(ctl); + assert(ctl->p); + + pa_threaded_mainloop_lock(ctl->p->mainloop); + + err = pulse_check_connection(ctl->p); + if (err < 0) + goto finish; + + err = pulse_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: + pa_threaded_mainloop_unlock(ctl->p->mainloop); + + return err; +} + +static int pulse_write_integer(snd_ctl_ext_t *ext, snd_ctl_ext_key_t key, + long *value) +{ + snd_ctl_pulse_t *ctl = ext->private_data; + int err = 0, i; + pa_operation *o; + pa_cvolume *vol = NULL; + + assert(ctl); + assert(ctl->p && ctl->p->context); + + pa_threaded_mainloop_lock(ctl->p->mainloop); + + err = pulse_check_connection(ctl->p); + if (err < 0) + goto finish; + + err = pulse_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) + o = pa_context_set_source_volume_by_name(ctl->p->context, + ctl->source, vol, pulse_context_success_cb, ctl->p); + else + o = pa_context_set_sink_volume_by_name(ctl->p->context, + ctl->sink, vol, pulse_context_success_cb, ctl->p); + } else { + if (key == 1) + o = pa_context_set_source_mute_by_name(ctl->p->context, + ctl->source, ctl->source_muted, pulse_context_success_cb, ctl->p); + else + o = pa_context_set_sink_mute_by_name(ctl->p->context, + ctl->sink, ctl->sink_muted, pulse_context_success_cb, ctl->p); + } + + err = pulse_wait_operation(ctl->p, o); + pa_operation_unref(o); + if (err < 0) + goto finish; + + err = 1; + +finish: + pa_threaded_mainloop_unlock(ctl->p->mainloop); + + return err; +} + +static void pulse_subscribe_events(snd_ctl_ext_t *ext, int subscribe) +{ + snd_ctl_pulse_t *ctl = ext->private_data; + + assert(ctl); + + pa_threaded_mainloop_lock(ctl->p->mainloop); + + ctl->subscribed = !!(subscribe & SND_CTL_EVENT_MASK_VALUE); + + pa_threaded_mainloop_unlock(ctl->p->mainloop); +} + +static int pulse_read_event(snd_ctl_ext_t *ext, snd_ctl_elem_id_t *id, + unsigned int *event_mask) +{ + snd_ctl_pulse_t *ctl = ext->private_data; + int offset; + int err = -EAGAIN; + + assert(ctl); + + pa_threaded_mainloop_lock(ctl->p->mainloop); + + if (!ctl->updated || !ctl->subscribed) + goto finish; + + if (ctl->source) + offset = 2; + else + offset = 0; + + if (ctl->updated & UPDATE_SOURCE_VOL) { + pulse_elem_list(ext, 0, id); + ctl->updated &= ~UPDATE_SOURCE_VOL; + } else if (ctl->updated & UPDATE_SOURCE_MUTE) { + pulse_elem_list(ext, 1, id); + ctl->updated &= ~UPDATE_SOURCE_MUTE; + } else if (ctl->updated & UPDATE_SINK_VOL) { + pulse_elem_list(ext, offset + 0, id); + ctl->updated &= ~UPDATE_SINK_VOL; + } else if (ctl->updated & UPDATE_SINK_MUTE) { + pulse_elem_list(ext, offset + 1, id); + ctl->updated &= ~UPDATE_SINK_MUTE; + } + + *event_mask = SND_CTL_EVENT_MASK_VALUE; + + if (!ctl->updated) + pulse_poll_deactivate(ctl->p); + + err = 1; + +finish: + pa_threaded_mainloop_unlock(ctl->p->mainloop); + + return err; +} + +static int pulse_ctl_poll_descriptors_count(snd_ctl_ext_t *ext) +{ + snd_ctl_pulse_t *ctl = ext->private_data; + int count; + + assert(ctl); + assert(ctl->p); + + pa_threaded_mainloop_lock(ctl->p->mainloop); + + count = pulse_poll_descriptors_count(ctl->p); + + pa_threaded_mainloop_unlock(ctl->p->mainloop); + + return count; +} + +static int pulse_ctl_poll_descriptors(snd_ctl_ext_t *ext, struct pollfd *pfd, unsigned int space) +{ + int num; + + snd_ctl_pulse_t *ctl = ext->private_data; + + assert(ctl); + assert(ctl->p); + + pa_threaded_mainloop_lock(ctl->p->mainloop); + + num = pulse_poll_descriptors(ctl->p, pfd, space); + if (num < 0) + goto finish; + +finish: + pa_threaded_mainloop_unlock(ctl->p->mainloop); + + return num; +} + +static int pulse_ctl_poll_revents(snd_ctl_ext_t *ext, struct pollfd *pfd, unsigned int nfds, unsigned short *revents) +{ + snd_ctl_pulse_t *ctl = ext->private_data; + int err = 0; + + assert(ctl); + assert(ctl->p); + + pa_threaded_mainloop_lock(ctl->p->mainloop); + + err = pulse_poll_revents(ctl->p, pfd, nfds, revents); + if (err < 0) + goto finish; + + *revents = 0; + + if (ctl->updated) + *revents |= POLLIN; + +finish: + pa_threaded_mainloop_unlock(ctl->p->mainloop); + + return err; +} + +static void pulse_close(snd_ctl_ext_t *ext) +{ + snd_ctl_pulse_t *ctl = ext->private_data; + + assert(ctl); + + if (ctl->p) + pulse_free(ctl->p); + + if (ctl->source) + free(ctl->source); + if (ctl->sink) + free(ctl->sink); + + free(ctl); +} + +static snd_ctl_ext_callback_t pulse_ext_callback = { + .elem_count = pulse_elem_count, + .elem_list = pulse_elem_list, + .find_elem = pulse_find_elem, + .get_attribute = pulse_get_attribute, + .get_integer_info = pulse_get_integer_info, + .read_integer = pulse_read_integer, + .write_integer = pulse_write_integer, + .subscribe_events = pulse_subscribe_events, + .read_event = pulse_read_event, + .poll_descriptors_count = pulse_ctl_poll_descriptors_count, + .poll_descriptors = pulse_ctl_poll_descriptors, + .poll_revents = pulse_ctl_poll_revents, + .close = pulse_close, +}; + +static void server_info_cb(pa_context *c, const pa_server_info*i, void *userdata) +{ + snd_ctl_pulse_t *ctl = (snd_ctl_pulse_t*)userdata; + + assert(ctl && i); + + if (i->default_source_name && !ctl->source) + ctl->source = strdup(i->default_source_name); + if (i->default_sink_name && !ctl->sink) + ctl->sink = strdup(i->default_sink_name); + + pa_threaded_mainloop_signal(ctl->p->mainloop, 0); +} + +SND_CTL_PLUGIN_DEFINE_FUNC(pulse) +{ + snd_config_iterator_t i, next; + const char *server = NULL; + const char *device = NULL; + const char *source = NULL; + const char *sink = NULL; + int err; + snd_ctl_pulse_t *ctl; + pa_operation *o; + + 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) + continue; + if (strcmp(id, "server") == 0) { + if (snd_config_get_string(n, &server) < 0) { + SNDERR("Invalid type for %s", id); + return -EINVAL; + } + continue; + } + if (strcmp(id, "device") == 0) { + if (snd_config_get_string(n, &device) < 0) { + SNDERR("Invalid type for %s", id); + return -EINVAL; + } + continue; + } + if (strcmp(id, "source") == 0) { + if (snd_config_get_string(n, &source) < 0) { + SNDERR("Invalid type for %s", id); + return -EINVAL; + } + continue; + } + if (strcmp(id, "sink") == 0) { + if (snd_config_get_string(n, &sink) < 0) { + SNDERR("Invalid type for %s", id); + return -EINVAL; + } + continue; + } + SNDERR("Unknown field %s", id); + return -EINVAL; + } + + ctl = calloc(1, sizeof(*ctl)); + + ctl->p = pulse_new(); + if (!ctl->p) { + err = -EIO; + goto error; + } + + err = pulse_connect(ctl->p, server); + if (err < 0) + goto error; + + if (source) + ctl->source = strdup(source); + else if (device) + ctl->source = strdup(device); + + if (sink) + ctl->sink = strdup(sink); + else if (device) + ctl->sink = strdup(device); + + if (!ctl->source || !ctl->sink) { + pa_threaded_mainloop_lock(ctl->p->mainloop); + + o = pa_context_get_server_info(ctl->p->context, server_info_cb, ctl); + err = pulse_wait_operation(ctl->p, o); + + pa_operation_unref(o); + + pa_threaded_mainloop_unlock(ctl->p->mainloop); + + if (err < 0) + goto error; + } + + pa_threaded_mainloop_lock(ctl->p->mainloop); + + pa_context_set_subscribe_callback(ctl->p->context, event_cb, ctl); + + o = pa_context_subscribe(ctl->p->context, + PA_SUBSCRIPTION_MASK_SINK | PA_SUBSCRIPTION_MASK_SOURCE, + pulse_context_success_cb, ctl->p); + + err = pulse_wait_operation(ctl->p, o); + + pa_operation_unref(o); + + pa_threaded_mainloop_unlock(ctl->p->mainloop); + + if (err < 0) + goto error; + + ctl->ext.version = SND_CTL_EXT_VERSION; + ctl->ext.card_idx = 0; + strncpy(ctl->ext.id, "pulse", sizeof(ctl->ext.id) - 1); + strncpy(ctl->ext.driver, "Polypaudio plugin", sizeof(ctl->ext.driver) - 1); + strncpy(ctl->ext.name, "Polypaudio", sizeof(ctl->ext.name) - 1); + strncpy(ctl->ext.longname, "Polypaudio", sizeof(ctl->ext.longname) - 1); + strncpy(ctl->ext.mixername, "Polypaudio", sizeof(ctl->ext.mixername) - 1); + ctl->ext.poll_fd = -1; + ctl->ext.callback = &pulse_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: + if (ctl->source) + free(ctl->source); + if (ctl->sink) + free(ctl->sink); + + if (ctl->p) + pulse_free(ctl->p); + + free(ctl); + + return err; +} + +SND_CTL_PLUGIN_SYMBOL(pulse); |