| /* |
| * Copyright (c) 2013 Lukasz Marek <lukasz.m.luki@gmail.com> |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg 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. |
| * |
| * FFmpeg 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 FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #include <math.h> |
| #include <pulse/pulseaudio.h> |
| #include <pulse/error.h> |
| #include "libavformat/avformat.h" |
| #include "libavformat/internal.h" |
| #include "libavutil/internal.h" |
| #include "libavutil/opt.h" |
| #include "libavutil/time.h" |
| #include "libavutil/log.h" |
| #include "libavutil/attributes.h" |
| #include "pulse_audio_common.h" |
| |
| typedef struct PulseData { |
| AVClass *class; |
| const char *server; |
| const char *name; |
| const char *stream_name; |
| const char *device; |
| int64_t timestamp; |
| int buffer_size; /**< Buffer size in bytes */ |
| int buffer_duration; /**< Buffer size in ms, recalculated to buffer_size */ |
| int prebuf; |
| int minreq; |
| int last_result; |
| pa_threaded_mainloop *mainloop; |
| pa_context *ctx; |
| pa_stream *stream; |
| int nonblocking; |
| int mute; |
| pa_volume_t base_volume; |
| pa_volume_t last_volume; |
| } PulseData; |
| |
| static void pulse_audio_sink_device_cb(pa_context *ctx, const pa_sink_info *dev, |
| int eol, void *userdata) |
| { |
| PulseData *s = userdata; |
| |
| if (s->ctx != ctx) |
| return; |
| |
| if (eol) { |
| pa_threaded_mainloop_signal(s->mainloop, 0); |
| } else { |
| if (dev->flags & PA_SINK_FLAT_VOLUME) |
| s->base_volume = dev->base_volume; |
| else |
| s->base_volume = PA_VOLUME_NORM; |
| av_log(s, AV_LOG_DEBUG, "base volume: %u\n", s->base_volume); |
| } |
| } |
| |
| /* Mainloop must be locked before calling this function as it uses pa_threaded_mainloop_wait. */ |
| static int pulse_update_sink_info(AVFormatContext *h) |
| { |
| PulseData *s = h->priv_data; |
| pa_operation *op; |
| if (!(op = pa_context_get_sink_info_by_name(s->ctx, s->device, |
| pulse_audio_sink_device_cb, s))) { |
| av_log(s, AV_LOG_ERROR, "pa_context_get_sink_info_by_name failed.\n"); |
| return AVERROR_EXTERNAL; |
| } |
| while (pa_operation_get_state(op) == PA_OPERATION_RUNNING) |
| pa_threaded_mainloop_wait(s->mainloop); |
| pa_operation_unref(op); |
| return 0; |
| } |
| |
| static void pulse_audio_sink_input_cb(pa_context *ctx, const pa_sink_input_info *i, |
| int eol, void *userdata) |
| { |
| AVFormatContext *h = userdata; |
| PulseData *s = h->priv_data; |
| |
| if (s->ctx != ctx) |
| return; |
| |
| if (!eol) { |
| double val; |
| pa_volume_t vol = pa_cvolume_avg(&i->volume); |
| if (s->mute < 0 || (s->mute && !i->mute) || (!s->mute && i->mute)) { |
| s->mute = i->mute; |
| avdevice_dev_to_app_control_message(h, AV_DEV_TO_APP_MUTE_STATE_CHANGED, &s->mute, sizeof(s->mute)); |
| } |
| |
| vol = pa_sw_volume_divide(vol, s->base_volume); |
| if (s->last_volume != vol) { |
| val = (double)vol / PA_VOLUME_NORM; |
| avdevice_dev_to_app_control_message(h, AV_DEV_TO_APP_VOLUME_LEVEL_CHANGED, &val, sizeof(val)); |
| s->last_volume = vol; |
| } |
| } |
| } |
| |
| /* This function creates new loop so may be called from PA callbacks. |
| Mainloop must be locked before calling this function as it operates on streams. */ |
| static int pulse_update_sink_input_info(AVFormatContext *h) |
| { |
| PulseData *s = h->priv_data; |
| pa_operation *op; |
| enum pa_operation_state op_state; |
| pa_mainloop *ml = NULL; |
| pa_context *ctx = NULL; |
| int ret = 0; |
| |
| if ((ret = ff_pulse_audio_connect_context(&ml, &ctx, s->server, "Update sink input information")) < 0) |
| return ret; |
| |
| if (!(op = pa_context_get_sink_input_info(ctx, pa_stream_get_index(s->stream), |
| pulse_audio_sink_input_cb, h))) { |
| ret = AVERROR_EXTERNAL; |
| goto fail; |
| } |
| |
| while ((op_state = pa_operation_get_state(op)) == PA_OPERATION_RUNNING) |
| pa_mainloop_iterate(ml, 1, NULL); |
| pa_operation_unref(op); |
| if (op_state != PA_OPERATION_DONE) { |
| ret = AVERROR_EXTERNAL; |
| goto fail; |
| } |
| |
| fail: |
| ff_pulse_audio_disconnect_context(&ml, &ctx); |
| if (ret) |
| av_log(s, AV_LOG_ERROR, "pa_context_get_sink_input_info failed.\n"); |
| return ret; |
| } |
| |
| static void pulse_event(pa_context *ctx, pa_subscription_event_type_t t, |
| uint32_t idx, void *userdata) |
| { |
| AVFormatContext *h = userdata; |
| PulseData *s = h->priv_data; |
| |
| if (s->ctx != ctx) |
| return; |
| |
| if ((t & PA_SUBSCRIPTION_EVENT_FACILITY_MASK) == PA_SUBSCRIPTION_EVENT_SINK_INPUT) { |
| if ((t & PA_SUBSCRIPTION_EVENT_TYPE_MASK) == PA_SUBSCRIPTION_EVENT_CHANGE) |
| // Calling from mainloop callback. No need to lock mainloop. |
| pulse_update_sink_input_info(h); |
| } |
| } |
| |
| static void pulse_stream_writable(pa_stream *stream, size_t nbytes, void *userdata) |
| { |
| AVFormatContext *h = userdata; |
| PulseData *s = h->priv_data; |
| int64_t val = nbytes; |
| |
| if (stream != s->stream) |
| return; |
| |
| avdevice_dev_to_app_control_message(h, AV_DEV_TO_APP_BUFFER_WRITABLE, &val, sizeof(val)); |
| pa_threaded_mainloop_signal(s->mainloop, 0); |
| } |
| |
| static void pulse_overflow(pa_stream *stream, void *userdata) |
| { |
| AVFormatContext *h = userdata; |
| avdevice_dev_to_app_control_message(h, AV_DEV_TO_APP_BUFFER_OVERFLOW, NULL, 0); |
| } |
| |
| static void pulse_underflow(pa_stream *stream, void *userdata) |
| { |
| AVFormatContext *h = userdata; |
| avdevice_dev_to_app_control_message(h, AV_DEV_TO_APP_BUFFER_UNDERFLOW, NULL, 0); |
| } |
| |
| static void pulse_stream_state(pa_stream *stream, void *userdata) |
| { |
| PulseData *s = userdata; |
| |
| if (stream != s->stream) |
| return; |
| |
| switch (pa_stream_get_state(s->stream)) { |
| case PA_STREAM_READY: |
| case PA_STREAM_FAILED: |
| case PA_STREAM_TERMINATED: |
| pa_threaded_mainloop_signal(s->mainloop, 0); |
| default: |
| break; |
| } |
| } |
| |
| static int pulse_stream_wait(PulseData *s) |
| { |
| pa_stream_state_t state; |
| |
| while ((state = pa_stream_get_state(s->stream)) != PA_STREAM_READY) { |
| if (state == PA_STREAM_FAILED || state == PA_STREAM_TERMINATED) |
| return AVERROR_EXTERNAL; |
| pa_threaded_mainloop_wait(s->mainloop); |
| } |
| return 0; |
| } |
| |
| static void pulse_context_state(pa_context *ctx, void *userdata) |
| { |
| PulseData *s = userdata; |
| |
| if (s->ctx != ctx) |
| return; |
| |
| switch (pa_context_get_state(ctx)) { |
| case PA_CONTEXT_READY: |
| case PA_CONTEXT_FAILED: |
| case PA_CONTEXT_TERMINATED: |
| pa_threaded_mainloop_signal(s->mainloop, 0); |
| default: |
| break; |
| } |
| } |
| |
| static int pulse_context_wait(PulseData *s) |
| { |
| pa_context_state_t state; |
| |
| while ((state = pa_context_get_state(s->ctx)) != PA_CONTEXT_READY) { |
| if (state == PA_CONTEXT_FAILED || state == PA_CONTEXT_TERMINATED) |
| return AVERROR_EXTERNAL; |
| pa_threaded_mainloop_wait(s->mainloop); |
| } |
| return 0; |
| } |
| |
| static void pulse_stream_result(pa_stream *stream, int success, void *userdata) |
| { |
| PulseData *s = userdata; |
| |
| if (stream != s->stream) |
| return; |
| |
| s->last_result = success ? 0 : AVERROR_EXTERNAL; |
| pa_threaded_mainloop_signal(s->mainloop, 0); |
| } |
| |
| static int pulse_finish_stream_operation(PulseData *s, pa_operation *op, const char *name) |
| { |
| if (!op) { |
| pa_threaded_mainloop_unlock(s->mainloop); |
| av_log(s, AV_LOG_ERROR, "%s failed.\n", name); |
| return AVERROR_EXTERNAL; |
| } |
| s->last_result = 2; |
| while (s->last_result == 2) |
| pa_threaded_mainloop_wait(s->mainloop); |
| pa_operation_unref(op); |
| pa_threaded_mainloop_unlock(s->mainloop); |
| if (s->last_result != 0) |
| av_log(s, AV_LOG_ERROR, "%s failed.\n", name); |
| return s->last_result; |
| } |
| |
| static int pulse_set_pause(PulseData *s, int pause) |
| { |
| pa_operation *op; |
| pa_threaded_mainloop_lock(s->mainloop); |
| op = pa_stream_cork(s->stream, pause, pulse_stream_result, s); |
| return pulse_finish_stream_operation(s, op, "pa_stream_cork"); |
| } |
| |
| static int pulse_flash_stream(PulseData *s) |
| { |
| pa_operation *op; |
| pa_threaded_mainloop_lock(s->mainloop); |
| op = pa_stream_flush(s->stream, pulse_stream_result, s); |
| return pulse_finish_stream_operation(s, op, "pa_stream_flush"); |
| } |
| |
| static void pulse_context_result(pa_context *ctx, int success, void *userdata) |
| { |
| PulseData *s = userdata; |
| |
| if (s->ctx != ctx) |
| return; |
| |
| s->last_result = success ? 0 : AVERROR_EXTERNAL; |
| pa_threaded_mainloop_signal(s->mainloop, 0); |
| } |
| |
| static int pulse_finish_context_operation(PulseData *s, pa_operation *op, const char *name) |
| { |
| if (!op) { |
| pa_threaded_mainloop_unlock(s->mainloop); |
| av_log(s, AV_LOG_ERROR, "%s failed.\n", name); |
| return AVERROR_EXTERNAL; |
| } |
| s->last_result = 2; |
| while (s->last_result == 2) |
| pa_threaded_mainloop_wait(s->mainloop); |
| pa_operation_unref(op); |
| pa_threaded_mainloop_unlock(s->mainloop); |
| if (s->last_result != 0) |
| av_log(s, AV_LOG_ERROR, "%s failed.\n", name); |
| return s->last_result; |
| } |
| |
| static int pulse_set_mute(PulseData *s) |
| { |
| pa_operation *op; |
| pa_threaded_mainloop_lock(s->mainloop); |
| op = pa_context_set_sink_input_mute(s->ctx, pa_stream_get_index(s->stream), |
| s->mute, pulse_context_result, s); |
| return pulse_finish_context_operation(s, op, "pa_context_set_sink_input_mute"); |
| } |
| |
| static int pulse_set_volume(PulseData *s, double volume) |
| { |
| pa_operation *op; |
| pa_cvolume cvol; |
| pa_volume_t vol; |
| const pa_sample_spec *ss = pa_stream_get_sample_spec(s->stream); |
| |
| vol = pa_sw_volume_multiply(lrint(volume * PA_VOLUME_NORM), s->base_volume); |
| pa_cvolume_set(&cvol, ss->channels, PA_VOLUME_NORM); |
| pa_sw_cvolume_multiply_scalar(&cvol, &cvol, vol); |
| pa_threaded_mainloop_lock(s->mainloop); |
| op = pa_context_set_sink_input_volume(s->ctx, pa_stream_get_index(s->stream), |
| &cvol, pulse_context_result, s); |
| return pulse_finish_context_operation(s, op, "pa_context_set_sink_input_volume"); |
| } |
| |
| static int pulse_subscribe_events(PulseData *s) |
| { |
| pa_operation *op; |
| |
| pa_threaded_mainloop_lock(s->mainloop); |
| op = pa_context_subscribe(s->ctx, PA_SUBSCRIPTION_MASK_SINK_INPUT, pulse_context_result, s); |
| return pulse_finish_context_operation(s, op, "pa_context_subscribe"); |
| } |
| |
| static void pulse_map_channels_to_pulse(int64_t channel_layout, pa_channel_map *channel_map) |
| { |
| channel_map->channels = 0; |
| if (channel_layout & AV_CH_FRONT_LEFT) |
| channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_FRONT_LEFT; |
| if (channel_layout & AV_CH_FRONT_RIGHT) |
| channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_FRONT_RIGHT; |
| if (channel_layout & AV_CH_FRONT_CENTER) |
| channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_FRONT_CENTER; |
| if (channel_layout & AV_CH_LOW_FREQUENCY) |
| channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_LFE; |
| if (channel_layout & AV_CH_BACK_LEFT) |
| channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_REAR_LEFT; |
| if (channel_layout & AV_CH_BACK_RIGHT) |
| channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_REAR_RIGHT; |
| if (channel_layout & AV_CH_FRONT_LEFT_OF_CENTER) |
| channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER; |
| if (channel_layout & AV_CH_FRONT_RIGHT_OF_CENTER) |
| channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER; |
| if (channel_layout & AV_CH_BACK_CENTER) |
| channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_REAR_CENTER; |
| if (channel_layout & AV_CH_SIDE_LEFT) |
| channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_SIDE_LEFT; |
| if (channel_layout & AV_CH_SIDE_RIGHT) |
| channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_SIDE_RIGHT; |
| if (channel_layout & AV_CH_TOP_CENTER) |
| channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_TOP_CENTER; |
| if (channel_layout & AV_CH_TOP_FRONT_LEFT) |
| channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_TOP_FRONT_LEFT; |
| if (channel_layout & AV_CH_TOP_FRONT_CENTER) |
| channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_TOP_FRONT_CENTER; |
| if (channel_layout & AV_CH_TOP_FRONT_RIGHT) |
| channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_TOP_FRONT_RIGHT; |
| if (channel_layout & AV_CH_TOP_BACK_LEFT) |
| channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_TOP_REAR_LEFT; |
| if (channel_layout & AV_CH_TOP_BACK_CENTER) |
| channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_TOP_REAR_CENTER; |
| if (channel_layout & AV_CH_TOP_BACK_RIGHT) |
| channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_TOP_REAR_RIGHT; |
| if (channel_layout & AV_CH_STEREO_LEFT) |
| channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_FRONT_LEFT; |
| if (channel_layout & AV_CH_STEREO_RIGHT) |
| channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_FRONT_RIGHT; |
| if (channel_layout & AV_CH_WIDE_LEFT) |
| channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_AUX0; |
| if (channel_layout & AV_CH_WIDE_RIGHT) |
| channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_AUX1; |
| if (channel_layout & AV_CH_SURROUND_DIRECT_LEFT) |
| channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_AUX2; |
| if (channel_layout & AV_CH_SURROUND_DIRECT_RIGHT) |
| channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_AUX3; |
| if (channel_layout & AV_CH_LOW_FREQUENCY_2) |
| channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_LFE; |
| } |
| |
| static av_cold int pulse_write_trailer(AVFormatContext *h) |
| { |
| PulseData *s = h->priv_data; |
| |
| if (s->mainloop) { |
| pa_threaded_mainloop_lock(s->mainloop); |
| if (s->stream) { |
| pa_stream_disconnect(s->stream); |
| pa_stream_set_state_callback(s->stream, NULL, NULL); |
| pa_stream_set_write_callback(s->stream, NULL, NULL); |
| pa_stream_set_overflow_callback(s->stream, NULL, NULL); |
| pa_stream_set_underflow_callback(s->stream, NULL, NULL); |
| pa_stream_unref(s->stream); |
| s->stream = NULL; |
| } |
| if (s->ctx) { |
| pa_context_disconnect(s->ctx); |
| pa_context_set_state_callback(s->ctx, NULL, NULL); |
| pa_context_set_subscribe_callback(s->ctx, NULL, NULL); |
| pa_context_unref(s->ctx); |
| s->ctx = NULL; |
| } |
| pa_threaded_mainloop_unlock(s->mainloop); |
| pa_threaded_mainloop_stop(s->mainloop); |
| pa_threaded_mainloop_free(s->mainloop); |
| s->mainloop = NULL; |
| } |
| |
| return 0; |
| } |
| |
| static av_cold int pulse_write_header(AVFormatContext *h) |
| { |
| PulseData *s = h->priv_data; |
| AVStream *st = NULL; |
| int ret; |
| pa_sample_spec sample_spec; |
| pa_buffer_attr buffer_attributes = { -1, -1, -1, -1, -1 }; |
| pa_channel_map channel_map; |
| pa_mainloop_api *mainloop_api; |
| const char *stream_name = s->stream_name; |
| static const pa_stream_flags_t stream_flags = PA_STREAM_INTERPOLATE_TIMING | |
| PA_STREAM_AUTO_TIMING_UPDATE | |
| PA_STREAM_NOT_MONOTONIC; |
| |
| if (h->nb_streams != 1 || h->streams[0]->codecpar->codec_type != AVMEDIA_TYPE_AUDIO) { |
| av_log(s, AV_LOG_ERROR, "Only a single audio stream is supported.\n"); |
| return AVERROR(EINVAL); |
| } |
| st = h->streams[0]; |
| |
| if (!stream_name) { |
| if (h->url[0]) |
| stream_name = h->url; |
| else |
| stream_name = "Playback"; |
| } |
| s->nonblocking = (h->flags & AVFMT_FLAG_NONBLOCK); |
| |
| if (s->buffer_duration) { |
| int64_t bytes = s->buffer_duration; |
| bytes *= st->codecpar->channels * st->codecpar->sample_rate * |
| av_get_bytes_per_sample(st->codecpar->format); |
| bytes /= 1000; |
| buffer_attributes.tlength = FFMAX(s->buffer_size, av_clip64(bytes, 0, UINT32_MAX - 1)); |
| av_log(s, AV_LOG_DEBUG, |
| "Buffer duration: %ums recalculated into %"PRId64" bytes buffer.\n", |
| s->buffer_duration, bytes); |
| av_log(s, AV_LOG_DEBUG, "Real buffer length is %u bytes\n", buffer_attributes.tlength); |
| } else if (s->buffer_size) |
| buffer_attributes.tlength = s->buffer_size; |
| if (s->prebuf) |
| buffer_attributes.prebuf = s->prebuf; |
| if (s->minreq) |
| buffer_attributes.minreq = s->minreq; |
| |
| sample_spec.format = ff_codec_id_to_pulse_format(st->codecpar->codec_id); |
| sample_spec.rate = st->codecpar->sample_rate; |
| sample_spec.channels = st->codecpar->channels; |
| if (!pa_sample_spec_valid(&sample_spec)) { |
| av_log(s, AV_LOG_ERROR, "Invalid sample spec.\n"); |
| return AVERROR(EINVAL); |
| } |
| |
| if (sample_spec.channels == 1) { |
| channel_map.channels = 1; |
| channel_map.map[0] = PA_CHANNEL_POSITION_MONO; |
| } else if (st->codecpar->channel_layout) { |
| if (av_get_channel_layout_nb_channels(st->codecpar->channel_layout) != st->codecpar->channels) |
| return AVERROR(EINVAL); |
| pulse_map_channels_to_pulse(st->codecpar->channel_layout, &channel_map); |
| /* Unknown channel is present in channel_layout, let PulseAudio use its default. */ |
| if (channel_map.channels != sample_spec.channels) { |
| av_log(s, AV_LOG_WARNING, "Unknown channel. Using defaul channel map.\n"); |
| channel_map.channels = 0; |
| } |
| } else |
| channel_map.channels = 0; |
| |
| if (!channel_map.channels) |
| av_log(s, AV_LOG_WARNING, "Using PulseAudio's default channel map.\n"); |
| else if (!pa_channel_map_valid(&channel_map)) { |
| av_log(s, AV_LOG_ERROR, "Invalid channel map.\n"); |
| return AVERROR(EINVAL); |
| } |
| |
| /* start main loop */ |
| s->mainloop = pa_threaded_mainloop_new(); |
| if (!s->mainloop) { |
| av_log(s, AV_LOG_ERROR, "Cannot create threaded mainloop.\n"); |
| return AVERROR(ENOMEM); |
| } |
| if ((ret = pa_threaded_mainloop_start(s->mainloop)) < 0) { |
| av_log(s, AV_LOG_ERROR, "Cannot start threaded mainloop: %s.\n", pa_strerror(ret)); |
| pa_threaded_mainloop_free(s->mainloop); |
| s->mainloop = NULL; |
| return AVERROR_EXTERNAL; |
| } |
| |
| pa_threaded_mainloop_lock(s->mainloop); |
| |
| mainloop_api = pa_threaded_mainloop_get_api(s->mainloop); |
| if (!mainloop_api) { |
| av_log(s, AV_LOG_ERROR, "Cannot get mainloop API.\n"); |
| ret = AVERROR_EXTERNAL; |
| goto fail; |
| } |
| |
| s->ctx = pa_context_new(mainloop_api, s->name); |
| if (!s->ctx) { |
| av_log(s, AV_LOG_ERROR, "Cannot create context.\n"); |
| ret = AVERROR(ENOMEM); |
| goto fail; |
| } |
| pa_context_set_state_callback(s->ctx, pulse_context_state, s); |
| pa_context_set_subscribe_callback(s->ctx, pulse_event, h); |
| |
| if ((ret = pa_context_connect(s->ctx, s->server, 0, NULL)) < 0) { |
| av_log(s, AV_LOG_ERROR, "Cannot connect context: %s.\n", pa_strerror(ret)); |
| ret = AVERROR_EXTERNAL; |
| goto fail; |
| } |
| |
| if ((ret = pulse_context_wait(s)) < 0) { |
| av_log(s, AV_LOG_ERROR, "Context failed.\n"); |
| goto fail; |
| } |
| |
| s->stream = pa_stream_new(s->ctx, stream_name, &sample_spec, |
| channel_map.channels ? &channel_map : NULL); |
| |
| if ((ret = pulse_update_sink_info(h)) < 0) { |
| av_log(s, AV_LOG_ERROR, "Updating sink info failed.\n"); |
| goto fail; |
| } |
| |
| if (!s->stream) { |
| av_log(s, AV_LOG_ERROR, "Cannot create stream.\n"); |
| ret = AVERROR(ENOMEM); |
| goto fail; |
| } |
| pa_stream_set_state_callback(s->stream, pulse_stream_state, s); |
| pa_stream_set_write_callback(s->stream, pulse_stream_writable, h); |
| pa_stream_set_overflow_callback(s->stream, pulse_overflow, h); |
| pa_stream_set_underflow_callback(s->stream, pulse_underflow, h); |
| |
| if ((ret = pa_stream_connect_playback(s->stream, s->device, &buffer_attributes, |
| stream_flags, NULL, NULL)) < 0) { |
| av_log(s, AV_LOG_ERROR, "pa_stream_connect_playback failed: %s.\n", pa_strerror(ret)); |
| ret = AVERROR_EXTERNAL; |
| goto fail; |
| } |
| |
| if ((ret = pulse_stream_wait(s)) < 0) { |
| av_log(s, AV_LOG_ERROR, "Stream failed.\n"); |
| goto fail; |
| } |
| |
| /* read back buffer attributes for future use */ |
| buffer_attributes = *pa_stream_get_buffer_attr(s->stream); |
| s->buffer_size = buffer_attributes.tlength; |
| s->prebuf = buffer_attributes.prebuf; |
| s->minreq = buffer_attributes.minreq; |
| av_log(s, AV_LOG_DEBUG, "Real buffer attributes: size: %d, prebuf: %d, minreq: %d\n", |
| s->buffer_size, s->prebuf, s->minreq); |
| |
| pa_threaded_mainloop_unlock(s->mainloop); |
| |
| if ((ret = pulse_subscribe_events(s)) < 0) { |
| av_log(s, AV_LOG_ERROR, "Event subscription failed.\n"); |
| /* a bit ugly but the simplest to lock here*/ |
| pa_threaded_mainloop_lock(s->mainloop); |
| goto fail; |
| } |
| |
| /* force control messages */ |
| s->mute = -1; |
| s->last_volume = PA_VOLUME_INVALID; |
| pa_threaded_mainloop_lock(s->mainloop); |
| if ((ret = pulse_update_sink_input_info(h)) < 0) { |
| av_log(s, AV_LOG_ERROR, "Updating sink input info failed.\n"); |
| goto fail; |
| } |
| pa_threaded_mainloop_unlock(s->mainloop); |
| |
| avpriv_set_pts_info(st, 64, 1, 1000000); /* 64 bits pts in us */ |
| |
| return 0; |
| fail: |
| pa_threaded_mainloop_unlock(s->mainloop); |
| pulse_write_trailer(h); |
| return ret; |
| } |
| |
| static int pulse_write_packet(AVFormatContext *h, AVPacket *pkt) |
| { |
| PulseData *s = h->priv_data; |
| int ret; |
| int64_t writable_size; |
| |
| if (!pkt) |
| return pulse_flash_stream(s); |
| |
| if (pkt->dts != AV_NOPTS_VALUE) |
| s->timestamp = pkt->dts; |
| |
| if (pkt->duration) { |
| s->timestamp += pkt->duration; |
| } else { |
| AVStream *st = h->streams[0]; |
| AVRational r = { 1, st->codecpar->sample_rate }; |
| int64_t samples = pkt->size / (av_get_bytes_per_sample(st->codecpar->format) * st->codecpar->channels); |
| s->timestamp += av_rescale_q(samples, r, st->time_base); |
| } |
| |
| pa_threaded_mainloop_lock(s->mainloop); |
| if (!PA_STREAM_IS_GOOD(pa_stream_get_state(s->stream))) { |
| av_log(s, AV_LOG_ERROR, "PulseAudio stream is in invalid state.\n"); |
| goto fail; |
| } |
| while (pa_stream_writable_size(s->stream) < s->minreq) { |
| if (s->nonblocking) { |
| pa_threaded_mainloop_unlock(s->mainloop); |
| return AVERROR(EAGAIN); |
| } else |
| pa_threaded_mainloop_wait(s->mainloop); |
| } |
| |
| if ((ret = pa_stream_write(s->stream, pkt->data, pkt->size, NULL, 0, PA_SEEK_RELATIVE)) < 0) { |
| av_log(s, AV_LOG_ERROR, "pa_stream_write failed: %s\n", pa_strerror(ret)); |
| goto fail; |
| } |
| if ((writable_size = pa_stream_writable_size(s->stream)) >= s->minreq) |
| avdevice_dev_to_app_control_message(h, AV_DEV_TO_APP_BUFFER_WRITABLE, &writable_size, sizeof(writable_size)); |
| |
| pa_threaded_mainloop_unlock(s->mainloop); |
| |
| return 0; |
| fail: |
| pa_threaded_mainloop_unlock(s->mainloop); |
| return AVERROR_EXTERNAL; |
| } |
| |
| static int pulse_write_frame(AVFormatContext *h, int stream_index, |
| AVFrame **frame, unsigned flags) |
| { |
| AVPacket pkt; |
| |
| /* Planar formats are not supported yet. */ |
| if (flags & AV_WRITE_UNCODED_FRAME_QUERY) |
| return av_sample_fmt_is_planar(h->streams[stream_index]->codecpar->format) ? |
| AVERROR(EINVAL) : 0; |
| |
| pkt.data = (*frame)->data[0]; |
| pkt.size = (*frame)->nb_samples * av_get_bytes_per_sample((*frame)->format) * (*frame)->channels; |
| pkt.dts = (*frame)->pkt_dts; |
| pkt.duration = (*frame)->pkt_duration; |
| return pulse_write_packet(h, &pkt); |
| } |
| |
| |
| static void pulse_get_output_timestamp(AVFormatContext *h, int stream, int64_t *dts, int64_t *wall) |
| { |
| PulseData *s = h->priv_data; |
| pa_usec_t latency; |
| int neg; |
| pa_threaded_mainloop_lock(s->mainloop); |
| pa_stream_get_latency(s->stream, &latency, &neg); |
| pa_threaded_mainloop_unlock(s->mainloop); |
| if (wall) |
| *wall = av_gettime(); |
| if (dts) |
| *dts = s->timestamp - (neg ? -latency : latency); |
| } |
| |
| static int pulse_get_device_list(AVFormatContext *h, AVDeviceInfoList *device_list) |
| { |
| PulseData *s = h->priv_data; |
| return ff_pulse_audio_get_devices(device_list, s->server, 1); |
| } |
| |
| static int pulse_control_message(AVFormatContext *h, int type, |
| void *data, size_t data_size) |
| { |
| PulseData *s = h->priv_data; |
| int ret; |
| |
| switch(type) { |
| case AV_APP_TO_DEV_PAUSE: |
| return pulse_set_pause(s, 1); |
| case AV_APP_TO_DEV_PLAY: |
| return pulse_set_pause(s, 0); |
| case AV_APP_TO_DEV_TOGGLE_PAUSE: |
| return pulse_set_pause(s, !pa_stream_is_corked(s->stream)); |
| case AV_APP_TO_DEV_MUTE: |
| if (!s->mute) { |
| s->mute = 1; |
| return pulse_set_mute(s); |
| } |
| return 0; |
| case AV_APP_TO_DEV_UNMUTE: |
| if (s->mute) { |
| s->mute = 0; |
| return pulse_set_mute(s); |
| } |
| return 0; |
| case AV_APP_TO_DEV_TOGGLE_MUTE: |
| s->mute = !s->mute; |
| return pulse_set_mute(s); |
| case AV_APP_TO_DEV_SET_VOLUME: |
| return pulse_set_volume(s, *(double *)data); |
| case AV_APP_TO_DEV_GET_VOLUME: |
| s->last_volume = PA_VOLUME_INVALID; |
| pa_threaded_mainloop_lock(s->mainloop); |
| ret = pulse_update_sink_input_info(h); |
| pa_threaded_mainloop_unlock(s->mainloop); |
| return ret; |
| case AV_APP_TO_DEV_GET_MUTE: |
| s->mute = -1; |
| pa_threaded_mainloop_lock(s->mainloop); |
| ret = pulse_update_sink_input_info(h); |
| pa_threaded_mainloop_unlock(s->mainloop); |
| return ret; |
| default: |
| break; |
| } |
| return AVERROR(ENOSYS); |
| } |
| |
| #define OFFSET(a) offsetof(PulseData, a) |
| #define E AV_OPT_FLAG_ENCODING_PARAM |
| static const AVOption options[] = { |
| { "server", "set PulseAudio server", OFFSET(server), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E }, |
| { "name", "set application name", OFFSET(name), AV_OPT_TYPE_STRING, {.str = LIBAVFORMAT_IDENT}, 0, 0, E }, |
| { "stream_name", "set stream description", OFFSET(stream_name), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E }, |
| { "device", "set device name", OFFSET(device), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E }, |
| { "buffer_size", "set buffer size in bytes", OFFSET(buffer_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E }, |
| { "buffer_duration", "set buffer duration in millisecs", OFFSET(buffer_duration), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E }, |
| { "prebuf", "set pre-buffering size", OFFSET(prebuf), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E }, |
| { "minreq", "set minimum request size", OFFSET(minreq), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E }, |
| { NULL } |
| }; |
| |
| static const AVClass pulse_muxer_class = { |
| .class_name = "PulseAudio outdev", |
| .item_name = av_default_item_name, |
| .option = options, |
| .version = LIBAVUTIL_VERSION_INT, |
| .category = AV_CLASS_CATEGORY_DEVICE_AUDIO_OUTPUT, |
| }; |
| |
| AVOutputFormat ff_pulse_muxer = { |
| .name = "pulse", |
| .long_name = NULL_IF_CONFIG_SMALL("Pulse audio output"), |
| .priv_data_size = sizeof(PulseData), |
| .audio_codec = AV_NE(AV_CODEC_ID_PCM_S16BE, AV_CODEC_ID_PCM_S16LE), |
| .video_codec = AV_CODEC_ID_NONE, |
| .write_header = pulse_write_header, |
| .write_packet = pulse_write_packet, |
| .write_uncoded_frame = pulse_write_frame, |
| .write_trailer = pulse_write_trailer, |
| .get_output_timestamp = pulse_get_output_timestamp, |
| .get_device_list = pulse_get_device_list, |
| .control_message = pulse_control_message, |
| .flags = AVFMT_NOFILE | AVFMT_ALLOW_FLUSH, |
| .priv_class = &pulse_muxer_class, |
| }; |
