diff options
Diffstat (limited to '')
| -rw-r--r-- | audio/out/ao_pulse.c | 817 |
1 files changed, 817 insertions, 0 deletions
diff --git a/audio/out/ao_pulse.c b/audio/out/ao_pulse.c new file mode 100644 index 0000000..3b29b1a --- /dev/null +++ b/audio/out/ao_pulse.c @@ -0,0 +1,817 @@ +/* + * PulseAudio audio output driver. + * Copyright (C) 2006 Lennart Poettering + * Copyright (C) 2007 Reimar Doeffinger + * + * This file is part of mpv. + * + * mpv 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. + * + * mpv 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 mpv. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <stdlib.h> +#include <stdbool.h> +#include <string.h> +#include <stdint.h> +#include <math.h> + +#include <pulse/pulseaudio.h> + +#include "audio/format.h" +#include "common/msg.h" +#include "options/m_option.h" +#include "ao.h" +#include "internal.h" + +#define VOL_PA2MP(v) ((v) * 100.0 / PA_VOLUME_NORM) +#define VOL_MP2PA(v) lrint((v) * PA_VOLUME_NORM / 100) + +struct priv { + // PulseAudio playback stream object + struct pa_stream *stream; + + // PulseAudio connection context + struct pa_context *context; + + // Main event loop object + struct pa_threaded_mainloop *mainloop; + + // temporary during control() + struct pa_sink_input_info pi; + + int retval; + bool playing; + bool underrun_signalled; + + char *cfg_host; + int cfg_buffer; + bool cfg_latency_hacks; + bool cfg_allow_suspended; +}; + +#define GENERIC_ERR_MSG(str) \ + MP_ERR(ao, str": %s\n", \ + pa_strerror(pa_context_errno(((struct priv *)ao->priv)->context))) + +static void context_state_cb(pa_context *c, void *userdata) +{ + struct ao *ao = userdata; + struct priv *priv = ao->priv; + switch (pa_context_get_state(c)) { + case PA_CONTEXT_READY: + case PA_CONTEXT_TERMINATED: + case PA_CONTEXT_FAILED: + pa_threaded_mainloop_signal(priv->mainloop, 0); + break; + } +} + +static void subscribe_cb(pa_context *c, pa_subscription_event_type_t t, + uint32_t idx, void *userdata) +{ + struct ao *ao = userdata; + int type = t & PA_SUBSCRIPTION_MASK_SINK; + int fac = t & PA_SUBSCRIPTION_EVENT_FACILITY_MASK; + if ((type == PA_SUBSCRIPTION_EVENT_NEW || type == PA_SUBSCRIPTION_EVENT_REMOVE) + && fac == PA_SUBSCRIPTION_EVENT_SINK) + { + ao_hotplug_event(ao); + } +} + +static void context_success_cb(pa_context *c, int success, void *userdata) +{ + struct ao *ao = userdata; + struct priv *priv = ao->priv; + priv->retval = success; + pa_threaded_mainloop_signal(priv->mainloop, 0); +} + +static void stream_state_cb(pa_stream *s, void *userdata) +{ + struct ao *ao = userdata; + struct priv *priv = ao->priv; + switch (pa_stream_get_state(s)) { + case PA_STREAM_FAILED: + MP_VERBOSE(ao, "Stream failed.\n"); + ao_request_reload(ao); + pa_threaded_mainloop_signal(priv->mainloop, 0); + break; + case PA_STREAM_READY: + case PA_STREAM_TERMINATED: + pa_threaded_mainloop_signal(priv->mainloop, 0); + break; + } +} + +static void stream_request_cb(pa_stream *s, size_t length, void *userdata) +{ + struct ao *ao = userdata; + struct priv *priv = ao->priv; + ao_wakeup_playthread(ao); + pa_threaded_mainloop_signal(priv->mainloop, 0); +} + +static void stream_latency_update_cb(pa_stream *s, void *userdata) +{ + struct ao *ao = userdata; + struct priv *priv = ao->priv; + pa_threaded_mainloop_signal(priv->mainloop, 0); +} + +static void underflow_cb(pa_stream *s, void *userdata) +{ + struct ao *ao = userdata; + struct priv *priv = ao->priv; + priv->playing = false; + priv->underrun_signalled = true; + ao_wakeup_playthread(ao); + pa_threaded_mainloop_signal(priv->mainloop, 0); +} + +static void success_cb(pa_stream *s, int success, void *userdata) +{ + struct ao *ao = userdata; + struct priv *priv = ao->priv; + priv->retval = success; + pa_threaded_mainloop_signal(priv->mainloop, 0); +} + +// Like waitop(), but keep the lock (even if it may unlock temporarily). +static bool waitop_no_unlock(struct priv *priv, pa_operation *op) +{ + if (!op) + return false; + pa_operation_state_t state = pa_operation_get_state(op); + while (state == PA_OPERATION_RUNNING) { + pa_threaded_mainloop_wait(priv->mainloop); + state = pa_operation_get_state(op); + } + pa_operation_unref(op); + return state == PA_OPERATION_DONE; +} + +/** + * \brief waits for a pulseaudio operation to finish, frees it and + * unlocks the mainloop + * \param op operation to wait for + * \return 1 if operation has finished normally (DONE state), 0 otherwise + */ +static bool waitop(struct priv *priv, pa_operation *op) +{ + bool r = waitop_no_unlock(priv, op); + pa_threaded_mainloop_unlock(priv->mainloop); + return r; +} + +static const struct format_map { + int mp_format; + pa_sample_format_t pa_format; +} format_maps[] = { + {AF_FORMAT_FLOAT, PA_SAMPLE_FLOAT32NE}, + {AF_FORMAT_S32, PA_SAMPLE_S32NE}, + {AF_FORMAT_S16, PA_SAMPLE_S16NE}, + {AF_FORMAT_U8, PA_SAMPLE_U8}, + {AF_FORMAT_UNKNOWN, 0} +}; + +static pa_encoding_t map_digital_format(int format) +{ + switch (format) { + case AF_FORMAT_S_AC3: return PA_ENCODING_AC3_IEC61937; + case AF_FORMAT_S_EAC3: return PA_ENCODING_EAC3_IEC61937; + case AF_FORMAT_S_MP3: return PA_ENCODING_MPEG_IEC61937; + case AF_FORMAT_S_DTS: return PA_ENCODING_DTS_IEC61937; +#ifdef PA_ENCODING_DTSHD_IEC61937 + case AF_FORMAT_S_DTSHD: return PA_ENCODING_DTSHD_IEC61937; +#endif +#ifdef PA_ENCODING_MPEG2_AAC_IEC61937 + case AF_FORMAT_S_AAC: return PA_ENCODING_MPEG2_AAC_IEC61937; +#endif +#ifdef PA_ENCODING_TRUEHD_IEC61937 + case AF_FORMAT_S_TRUEHD: return PA_ENCODING_TRUEHD_IEC61937; +#endif + default: + if (af_fmt_is_spdif(format)) + return PA_ENCODING_ANY; + return PA_ENCODING_PCM; + } +} + +static const int speaker_map[][2] = { + {PA_CHANNEL_POSITION_FRONT_LEFT, MP_SPEAKER_ID_FL}, + {PA_CHANNEL_POSITION_FRONT_RIGHT, MP_SPEAKER_ID_FR}, + {PA_CHANNEL_POSITION_FRONT_CENTER, MP_SPEAKER_ID_FC}, + {PA_CHANNEL_POSITION_REAR_CENTER, MP_SPEAKER_ID_BC}, + {PA_CHANNEL_POSITION_REAR_LEFT, MP_SPEAKER_ID_BL}, + {PA_CHANNEL_POSITION_REAR_RIGHT, MP_SPEAKER_ID_BR}, + {PA_CHANNEL_POSITION_LFE, MP_SPEAKER_ID_LFE}, + {PA_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER, MP_SPEAKER_ID_FLC}, + {PA_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER, MP_SPEAKER_ID_FRC}, + {PA_CHANNEL_POSITION_SIDE_LEFT, MP_SPEAKER_ID_SL}, + {PA_CHANNEL_POSITION_SIDE_RIGHT, MP_SPEAKER_ID_SR}, + {PA_CHANNEL_POSITION_TOP_CENTER, MP_SPEAKER_ID_TC}, + {PA_CHANNEL_POSITION_TOP_FRONT_LEFT, MP_SPEAKER_ID_TFL}, + {PA_CHANNEL_POSITION_TOP_FRONT_RIGHT, MP_SPEAKER_ID_TFR}, + {PA_CHANNEL_POSITION_TOP_FRONT_CENTER, MP_SPEAKER_ID_TFC}, + {PA_CHANNEL_POSITION_TOP_REAR_LEFT, MP_SPEAKER_ID_TBL}, + {PA_CHANNEL_POSITION_TOP_REAR_RIGHT, MP_SPEAKER_ID_TBR}, + {PA_CHANNEL_POSITION_TOP_REAR_CENTER, MP_SPEAKER_ID_TBC}, + {PA_CHANNEL_POSITION_INVALID, -1} +}; + +static bool chmap_pa_from_mp(pa_channel_map *dst, struct mp_chmap *src) +{ + if (src->num > PA_CHANNELS_MAX) + return false; + dst->channels = src->num; + if (mp_chmap_equals(src, &(const struct mp_chmap)MP_CHMAP_INIT_MONO)) { + dst->map[0] = PA_CHANNEL_POSITION_MONO; + return true; + } + for (int n = 0; n < src->num; n++) { + int mp_speaker = src->speaker[n]; + int pa_speaker = PA_CHANNEL_POSITION_INVALID; + for (int i = 0; speaker_map[i][1] != -1; i++) { + if (speaker_map[i][1] == mp_speaker) { + pa_speaker = speaker_map[i][0]; + break; + } + } + if (pa_speaker == PA_CHANNEL_POSITION_INVALID) + return false; + dst->map[n] = pa_speaker; + } + return true; +} + +static bool select_chmap(struct ao *ao, pa_channel_map *dst) +{ + struct mp_chmap_sel sel = {0}; + for (int n = 0; speaker_map[n][1] != -1; n++) + mp_chmap_sel_add_speaker(&sel, speaker_map[n][1]); + return ao_chmap_sel_adjust(ao, &sel, &ao->channels) && + chmap_pa_from_mp(dst, &ao->channels); +} + +static void uninit(struct ao *ao) +{ + struct priv *priv = ao->priv; + + if (priv->mainloop) + pa_threaded_mainloop_stop(priv->mainloop); + + if (priv->stream) { + pa_stream_disconnect(priv->stream); + pa_stream_unref(priv->stream); + priv->stream = NULL; + } + + if (priv->context) { + pa_context_disconnect(priv->context); + pa_context_unref(priv->context); + priv->context = NULL; + } + + if (priv->mainloop) { + pa_threaded_mainloop_free(priv->mainloop); + priv->mainloop = NULL; + } +} + +static int pa_init_boilerplate(struct ao *ao) +{ + struct priv *priv = ao->priv; + char *host = priv->cfg_host && priv->cfg_host[0] ? priv->cfg_host : NULL; + bool locked = false; + + if (!(priv->mainloop = pa_threaded_mainloop_new())) { + MP_ERR(ao, "Failed to allocate main loop\n"); + goto fail; + } + + if (pa_threaded_mainloop_start(priv->mainloop) < 0) + goto fail; + + pa_threaded_mainloop_lock(priv->mainloop); + locked = true; + + if (!(priv->context = pa_context_new(pa_threaded_mainloop_get_api( + priv->mainloop), ao->client_name))) + { + MP_ERR(ao, "Failed to allocate context\n"); + goto fail; + } + + MP_VERBOSE(ao, "Library version: %s\n", pa_get_library_version()); + MP_VERBOSE(ao, "Proto: %lu\n", + (long)pa_context_get_protocol_version(priv->context)); + MP_VERBOSE(ao, "Server proto: %lu\n", + (long)pa_context_get_server_protocol_version(priv->context)); + + pa_context_set_state_callback(priv->context, context_state_cb, ao); + pa_context_set_subscribe_callback(priv->context, subscribe_cb, ao); + + if (pa_context_connect(priv->context, host, 0, NULL) < 0) + goto fail; + + /* Wait until the context is ready */ + while (1) { + int state = pa_context_get_state(priv->context); + if (state == PA_CONTEXT_READY) + break; + if (!PA_CONTEXT_IS_GOOD(state)) + goto fail; + pa_threaded_mainloop_wait(priv->mainloop); + } + + pa_threaded_mainloop_unlock(priv->mainloop); + return 0; + +fail: + if (locked) + pa_threaded_mainloop_unlock(priv->mainloop); + + if (priv->context) { + pa_threaded_mainloop_lock(priv->mainloop); + if (!(pa_context_errno(priv->context) == PA_ERR_CONNECTIONREFUSED + && ao->probing)) + GENERIC_ERR_MSG("Init failed"); + pa_threaded_mainloop_unlock(priv->mainloop); + } + uninit(ao); + return -1; +} + +static bool set_format(struct ao *ao, pa_format_info *format) +{ + ao->format = af_fmt_from_planar(ao->format); + + format->encoding = map_digital_format(ao->format); + if (format->encoding == PA_ENCODING_PCM) { + const struct format_map *fmt_map = format_maps; + + while (fmt_map->mp_format != ao->format) { + if (fmt_map->mp_format == AF_FORMAT_UNKNOWN) { + MP_VERBOSE(ao, "Unsupported format, using default\n"); + fmt_map = format_maps; + break; + } + fmt_map++; + } + ao->format = fmt_map->mp_format; + + pa_format_info_set_sample_format(format, fmt_map->pa_format); + } + + struct pa_channel_map map; + + if (!select_chmap(ao, &map)) + return false; + + pa_format_info_set_rate(format, ao->samplerate); + pa_format_info_set_channels(format, ao->channels.num); + pa_format_info_set_channel_map(format, &map); + + return ao->samplerate < PA_RATE_MAX && pa_format_info_valid(format); +} + +static int init(struct ao *ao) +{ + pa_proplist *proplist = NULL; + pa_format_info *format = NULL; + struct priv *priv = ao->priv; + char *sink = ao->device; + + if (pa_init_boilerplate(ao) < 0) + return -1; + + pa_threaded_mainloop_lock(priv->mainloop); + + if (!(proplist = pa_proplist_new())) { + MP_ERR(ao, "Failed to allocate proplist\n"); + goto unlock_and_fail; + } + (void)pa_proplist_sets(proplist, PA_PROP_MEDIA_ICON_NAME, ao->client_name); + + if (!(format = pa_format_info_new())) + goto unlock_and_fail; + + if (!set_format(ao, format)) { + ao->channels = (struct mp_chmap) MP_CHMAP_INIT_STEREO; + ao->samplerate = 48000; + ao->format = AF_FORMAT_FLOAT; + if (!set_format(ao, format)) { + MP_ERR(ao, "Invalid audio format\n"); + goto unlock_and_fail; + } + } + + if (!(priv->stream = pa_stream_new_extended(priv->context, "audio stream", + &format, 1, proplist))) + goto unlock_and_fail; + + pa_format_info_free(format); + format = NULL; + + pa_proplist_free(proplist); + proplist = NULL; + + pa_stream_set_state_callback(priv->stream, stream_state_cb, ao); + pa_stream_set_write_callback(priv->stream, stream_request_cb, ao); + pa_stream_set_latency_update_callback(priv->stream, + stream_latency_update_cb, ao); + pa_stream_set_underflow_callback(priv->stream, underflow_cb, ao); + uint32_t buf_size = ao->samplerate * (priv->cfg_buffer / 1000.0) * + af_fmt_to_bytes(ao->format) * ao->channels.num; + pa_buffer_attr bufattr = { + .maxlength = -1, + .tlength = buf_size > 0 ? buf_size : -1, + .prebuf = 0, + .minreq = -1, + .fragsize = -1, + }; + + int flags = PA_STREAM_NOT_MONOTONIC | PA_STREAM_START_CORKED; + if (!priv->cfg_latency_hacks) + flags |= PA_STREAM_INTERPOLATE_TIMING|PA_STREAM_AUTO_TIMING_UPDATE; + + if (pa_stream_connect_playback(priv->stream, sink, &bufattr, + flags, NULL, NULL) < 0) + goto unlock_and_fail; + + /* Wait until the stream is ready */ + while (1) { + int state = pa_stream_get_state(priv->stream); + if (state == PA_STREAM_READY) + break; + if (!PA_STREAM_IS_GOOD(state)) + goto unlock_and_fail; + pa_threaded_mainloop_wait(priv->mainloop); + } + + if (pa_stream_is_suspended(priv->stream) && !priv->cfg_allow_suspended) { + MP_ERR(ao, "The stream is suspended. Bailing out.\n"); + goto unlock_and_fail; + } + + const pa_buffer_attr* final_bufattr = pa_stream_get_buffer_attr(priv->stream); + if(!final_bufattr) { + MP_ERR(ao, "PulseAudio didn't tell us what buffer sizes it set. Bailing out.\n"); + goto unlock_and_fail; + } + ao->device_buffer = final_bufattr->tlength / + af_fmt_to_bytes(ao->format) / ao->channels.num; + + pa_threaded_mainloop_unlock(priv->mainloop); + return 0; + +unlock_and_fail: + pa_threaded_mainloop_unlock(priv->mainloop); + + if (format) + pa_format_info_free(format); + + if (proplist) + pa_proplist_free(proplist); + + uninit(ao); + return -1; +} + +static void cork(struct ao *ao, bool pause) +{ + struct priv *priv = ao->priv; + pa_threaded_mainloop_lock(priv->mainloop); + priv->retval = 0; + if (waitop_no_unlock(priv, pa_stream_cork(priv->stream, pause, success_cb, ao)) + && priv->retval) + { + if (!pause) + priv->playing = true; + } else { + GENERIC_ERR_MSG("pa_stream_cork() failed"); + priv->playing = false; + } + pa_threaded_mainloop_unlock(priv->mainloop); +} + +// Play the specified data to the pulseaudio server +static bool audio_write(struct ao *ao, void **data, int samples) +{ + struct priv *priv = ao->priv; + bool res = true; + pa_threaded_mainloop_lock(priv->mainloop); + if (pa_stream_write(priv->stream, data[0], samples * ao->sstride, NULL, 0, + PA_SEEK_RELATIVE) < 0) { + GENERIC_ERR_MSG("pa_stream_write() failed"); + res = false; + } + pa_threaded_mainloop_unlock(priv->mainloop); + return res; +} + +static void start(struct ao *ao) +{ + cork(ao, false); +} + +// Reset the audio stream, i.e. flush the playback buffer on the server side +static void reset(struct ao *ao) +{ + // pa_stream_flush() works badly if not corked + cork(ao, true); + struct priv *priv = ao->priv; + pa_threaded_mainloop_lock(priv->mainloop); + priv->playing = false; + priv->retval = 0; + if (!waitop(priv, pa_stream_flush(priv->stream, success_cb, ao)) || + !priv->retval) + GENERIC_ERR_MSG("pa_stream_flush() failed"); +} + +static bool set_pause(struct ao *ao, bool paused) +{ + cork(ao, paused); + return true; +} + +static double get_delay_hackfixed(struct ao *ao) +{ + /* This code basically does what pa_stream_get_latency() _should_ + * do, but doesn't due to multiple known bugs in PulseAudio (at + * PulseAudio version 2.1). In particular, the timing interpolation + * mode (PA_STREAM_INTERPOLATE_TIMING) can return completely bogus + * values, and the non-interpolating code has a bug causing too + * large results at end of stream (so a stream never seems to finish). + * This code can still return wrong values in some cases due to known + * PulseAudio bugs that can not be worked around on the client side. + * + * We always query the server for latest timing info. This may take + * too long to work well with remote audio servers, but at least + * this should be enough to fix the normal local playback case. + */ + struct priv *priv = ao->priv; + if (!waitop_no_unlock(priv, pa_stream_update_timing_info(priv->stream, + NULL, NULL))) + { + GENERIC_ERR_MSG("pa_stream_update_timing_info() failed"); + return 0; + } + const pa_timing_info *ti = pa_stream_get_timing_info(priv->stream); + if (!ti) { + GENERIC_ERR_MSG("pa_stream_get_timing_info() failed"); + return 0; + } + const struct pa_sample_spec *ss = pa_stream_get_sample_spec(priv->stream); + if (!ss) { + GENERIC_ERR_MSG("pa_stream_get_sample_spec() failed"); + return 0; + } + // data left in PulseAudio's main buffers (not written to sink yet) + int64_t latency = pa_bytes_to_usec(ti->write_index - ti->read_index, ss); + // since this info may be from a while ago, playback has progressed since + latency -= ti->transport_usec; + // data already moved from buffers to sink, but not played yet + int64_t sink_latency = ti->sink_usec; + if (!ti->playing) + /* At the end of a stream, part of the data "left" in the sink may + * be padding silence after the end; that should be subtracted to + * get the amount of real audio from our stream. This adjustment + * is missing from Pulseaudio's own get_latency calculations + * (as of PulseAudio 2.1). */ + sink_latency -= pa_bytes_to_usec(ti->since_underrun, ss); + if (sink_latency > 0) + latency += sink_latency; + if (latency < 0) + latency = 0; + return latency / 1e6; +} + +static double get_delay_pulse(struct ao *ao) +{ + struct priv *priv = ao->priv; + pa_usec_t latency = (pa_usec_t) -1; + while (pa_stream_get_latency(priv->stream, &latency, NULL) < 0) { + if (pa_context_errno(priv->context) != PA_ERR_NODATA) { + GENERIC_ERR_MSG("pa_stream_get_latency() failed"); + break; + } + /* Wait until latency data is available again */ + pa_threaded_mainloop_wait(priv->mainloop); + } + return latency == (pa_usec_t) -1 ? 0 : latency / 1000000.0; +} + +static void audio_get_state(struct ao *ao, struct mp_pcm_state *state) +{ + struct priv *priv = ao->priv; + + pa_threaded_mainloop_lock(priv->mainloop); + + size_t space = pa_stream_writable_size(priv->stream); + state->free_samples = space == (size_t)-1 ? 0 : space / ao->sstride; + + state->queued_samples = ao->device_buffer - state->free_samples; // dunno + + if (priv->cfg_latency_hacks) { + state->delay = get_delay_hackfixed(ao); + } else { + state->delay = get_delay_pulse(ao); + } + + state->playing = priv->playing; + + pa_threaded_mainloop_unlock(priv->mainloop); + + // Otherwise, PA will keep hammering us for underruns (which it does instead + // of stopping the stream automatically). + if (!state->playing && priv->underrun_signalled) { + reset(ao); + priv->underrun_signalled = false; + } +} + +/* A callback function that is called when the + * pa_context_get_sink_input_info() operation completes. Saves the + * volume field of the specified structure to the global variable volume. + */ +static void info_func(struct pa_context *c, const struct pa_sink_input_info *i, + int is_last, void *userdata) +{ + struct ao *ao = userdata; + struct priv *priv = ao->priv; + if (is_last < 0) { + GENERIC_ERR_MSG("Failed to get sink input info"); + return; + } + if (!i) + return; + priv->pi = *i; + pa_threaded_mainloop_signal(priv->mainloop, 0); +} + +static int control(struct ao *ao, enum aocontrol cmd, void *arg) +{ + struct priv *priv = ao->priv; + switch (cmd) { + case AOCONTROL_GET_MUTE: + case AOCONTROL_GET_VOLUME: { + uint32_t devidx = pa_stream_get_index(priv->stream); + pa_threaded_mainloop_lock(priv->mainloop); + if (!waitop(priv, pa_context_get_sink_input_info(priv->context, devidx, + info_func, ao))) { + GENERIC_ERR_MSG("pa_context_get_sink_input_info() failed"); + return CONTROL_ERROR; + } + // Warning: some information in pi might be unaccessible, because + // we naively copied the struct, without updating pointers etc. + // Pointers might point to invalid data, accessors might fail. + if (cmd == AOCONTROL_GET_VOLUME) { + float *vol = arg; + *vol = VOL_PA2MP(pa_cvolume_avg(&priv->pi.volume)); + } else if (cmd == AOCONTROL_GET_MUTE) { + bool *mute = arg; + *mute = priv->pi.mute; + } + return CONTROL_OK; + } + + case AOCONTROL_SET_MUTE: + case AOCONTROL_SET_VOLUME: { + pa_threaded_mainloop_lock(priv->mainloop); + priv->retval = 0; + uint32_t stream_index = pa_stream_get_index(priv->stream); + if (cmd == AOCONTROL_SET_VOLUME) { + const float *vol = arg; + struct pa_cvolume volume; + + pa_cvolume_reset(&volume, ao->channels.num); + pa_cvolume_set(&volume, volume.channels, VOL_MP2PA(*vol)); + if (!waitop(priv, pa_context_set_sink_input_volume(priv->context, + stream_index, + &volume, + context_success_cb, ao)) || + !priv->retval) { + GENERIC_ERR_MSG("pa_context_set_sink_input_volume() failed"); + return CONTROL_ERROR; + } + } else if (cmd == AOCONTROL_SET_MUTE) { + const bool *mute = arg; + if (!waitop(priv, pa_context_set_sink_input_mute(priv->context, + stream_index, + *mute, + context_success_cb, ao)) || + !priv->retval) { + GENERIC_ERR_MSG("pa_context_set_sink_input_mute() failed"); + return CONTROL_ERROR; + } + } else { + MP_ASSERT_UNREACHABLE(); + } + return CONTROL_OK; + } + + case AOCONTROL_UPDATE_STREAM_TITLE: { + char *title = (char *)arg; + pa_threaded_mainloop_lock(priv->mainloop); + if (!waitop(priv, pa_stream_set_name(priv->stream, title, + success_cb, ao))) + { + GENERIC_ERR_MSG("pa_stream_set_name() failed"); + return CONTROL_ERROR; + } + return CONTROL_OK; + } + + default: + return CONTROL_UNKNOWN; + } +} + +struct sink_cb_ctx { + struct ao *ao; + struct ao_device_list *list; +}; + +static void sink_info_cb(pa_context *c, const pa_sink_info *i, int eol, void *ud) +{ + struct sink_cb_ctx *ctx = ud; + struct priv *priv = ctx->ao->priv; + + if (eol) { + pa_threaded_mainloop_signal(priv->mainloop, 0); // wakeup waitop() + return; + } + + struct ao_device_desc entry = {.name = i->name, .desc = i->description}; + ao_device_list_add(ctx->list, ctx->ao, &entry); +} + +static int hotplug_init(struct ao *ao) +{ + struct priv *priv = ao->priv; + if (pa_init_boilerplate(ao) < 0) + return -1; + + pa_threaded_mainloop_lock(priv->mainloop); + waitop(priv, pa_context_subscribe(priv->context, PA_SUBSCRIPTION_MASK_SINK, + context_success_cb, ao)); + + return 0; +} + +static void list_devs(struct ao *ao, struct ao_device_list *list) +{ + struct priv *priv = ao->priv; + struct sink_cb_ctx ctx = {ao, list}; + + pa_threaded_mainloop_lock(priv->mainloop); + waitop(priv, pa_context_get_sink_info_list(priv->context, sink_info_cb, &ctx)); +} + +static void hotplug_uninit(struct ao *ao) +{ + uninit(ao); +} + +#define OPT_BASE_STRUCT struct priv + +const struct ao_driver audio_out_pulse = { + .description = "PulseAudio audio output", + .name = "pulse", + .control = control, + .init = init, + .uninit = uninit, + .reset = reset, + .get_state = audio_get_state, + .write = audio_write, + .start = start, + .set_pause = set_pause, + .hotplug_init = hotplug_init, + .hotplug_uninit = hotplug_uninit, + .list_devs = list_devs, + .priv_size = sizeof(struct priv), + .priv_defaults = &(const struct priv) { + .cfg_buffer = 100, + }, + .options = (const struct m_option[]) { + {"host", OPT_STRING(cfg_host)}, + {"buffer", OPT_CHOICE(cfg_buffer, {"native", 0}), + M_RANGE(1, 2000)}, + {"latency-hacks", OPT_BOOL(cfg_latency_hacks)}, + {"allow-suspended", OPT_BOOL(cfg_allow_suspended)}, + {0} + }, + .options_prefix = "pulse", +}; |