mirror of
https://github.com/FFmpeg/FFmpeg.git
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c07ed10b0e
Fix spelling issue as reported by Debian's lintian tool: accomodate -> accommodate addtional -> additional auxillary -> auxiliary bellow -> below betweeen -> between Calulate -> Calculate coefficents -> coefficients Defalt -> Default defaul -> default higer -> higher neccesary -> necessary orignal -> original ouput -> output precison -> precision processsing -> processing substract -> subtract Transfered -> Transferred upto -> up to Also add several of them to the 'common typos' check in patcheck. Signed-off-by: Diederik de Haas <didi.debian@cknow.org>
813 lines
30 KiB
C
813 lines
30 KiB
C
/*
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* Copyright (c) 2013 Lukasz Marek <lukasz.m.luki@gmail.com>
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <math.h>
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#include <pulse/pulseaudio.h>
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#include <pulse/error.h>
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#include "libavformat/avformat.h"
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#include "libavformat/internal.h"
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#include "libavformat/mux.h"
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#include "libavformat/version.h"
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#include "libavutil/channel_layout.h"
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#include "libavutil/frame.h"
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#include "libavutil/internal.h"
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#include "libavutil/opt.h"
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#include "libavutil/time.h"
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#include "libavutil/log.h"
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#include "libavutil/attributes.h"
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#include "pulse_audio_common.h"
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typedef struct PulseData {
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AVClass *class;
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const char *server;
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const char *name;
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const char *stream_name;
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const char *device;
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int64_t timestamp;
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int buffer_size; /**< Buffer size in bytes */
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int buffer_duration; /**< Buffer size in ms, recalculated to buffer_size */
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int prebuf;
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int minreq;
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int last_result;
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pa_threaded_mainloop *mainloop;
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pa_context *ctx;
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pa_stream *stream;
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int nonblocking;
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int mute;
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pa_volume_t base_volume;
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pa_volume_t last_volume;
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} PulseData;
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static void pulse_audio_sink_device_cb(pa_context *ctx, const pa_sink_info *dev,
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int eol, void *userdata)
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{
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PulseData *s = userdata;
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if (s->ctx != ctx)
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return;
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if (eol) {
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pa_threaded_mainloop_signal(s->mainloop, 0);
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} else {
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if (dev->flags & PA_SINK_FLAT_VOLUME)
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s->base_volume = dev->base_volume;
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else
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s->base_volume = PA_VOLUME_NORM;
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av_log(s, AV_LOG_DEBUG, "base volume: %u\n", s->base_volume);
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}
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}
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/* Mainloop must be locked before calling this function as it uses pa_threaded_mainloop_wait. */
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static int pulse_update_sink_info(AVFormatContext *h)
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{
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PulseData *s = h->priv_data;
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pa_operation *op;
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if (!(op = pa_context_get_sink_info_by_name(s->ctx, s->device,
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pulse_audio_sink_device_cb, s))) {
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av_log(s, AV_LOG_ERROR, "pa_context_get_sink_info_by_name failed.\n");
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return AVERROR_EXTERNAL;
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}
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while (pa_operation_get_state(op) == PA_OPERATION_RUNNING)
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pa_threaded_mainloop_wait(s->mainloop);
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pa_operation_unref(op);
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return 0;
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}
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static void pulse_audio_sink_input_cb(pa_context *ctx, const pa_sink_input_info *i,
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int eol, void *userdata)
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{
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AVFormatContext *h = userdata;
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PulseData *s = h->priv_data;
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if (s->ctx != ctx)
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return;
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if (!eol) {
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double val;
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pa_volume_t vol = pa_cvolume_avg(&i->volume);
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if (s->mute < 0 || (s->mute && !i->mute) || (!s->mute && i->mute)) {
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s->mute = i->mute;
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avdevice_dev_to_app_control_message(h, AV_DEV_TO_APP_MUTE_STATE_CHANGED, &s->mute, sizeof(s->mute));
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}
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vol = pa_sw_volume_divide(vol, s->base_volume);
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if (s->last_volume != vol) {
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val = (double)vol / PA_VOLUME_NORM;
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avdevice_dev_to_app_control_message(h, AV_DEV_TO_APP_VOLUME_LEVEL_CHANGED, &val, sizeof(val));
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s->last_volume = vol;
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}
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}
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}
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/* This function creates new loop so may be called from PA callbacks.
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Mainloop must be locked before calling this function as it operates on streams. */
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static int pulse_update_sink_input_info(AVFormatContext *h)
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{
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PulseData *s = h->priv_data;
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pa_operation *op;
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enum pa_operation_state op_state;
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pa_mainloop *ml = NULL;
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pa_context *ctx = NULL;
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int ret = 0;
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if ((ret = ff_pulse_audio_connect_context(&ml, &ctx, s->server, "Update sink input information")) < 0)
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return ret;
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if (!(op = pa_context_get_sink_input_info(ctx, pa_stream_get_index(s->stream),
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pulse_audio_sink_input_cb, h))) {
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ret = AVERROR_EXTERNAL;
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goto fail;
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}
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while ((op_state = pa_operation_get_state(op)) == PA_OPERATION_RUNNING)
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pa_mainloop_iterate(ml, 1, NULL);
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pa_operation_unref(op);
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if (op_state != PA_OPERATION_DONE) {
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ret = AVERROR_EXTERNAL;
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goto fail;
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}
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fail:
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ff_pulse_audio_disconnect_context(&ml, &ctx);
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if (ret)
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av_log(s, AV_LOG_ERROR, "pa_context_get_sink_input_info failed.\n");
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return ret;
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}
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static void pulse_event(pa_context *ctx, pa_subscription_event_type_t t,
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uint32_t idx, void *userdata)
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{
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AVFormatContext *h = userdata;
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PulseData *s = h->priv_data;
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if (s->ctx != ctx)
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return;
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if ((t & PA_SUBSCRIPTION_EVENT_FACILITY_MASK) == PA_SUBSCRIPTION_EVENT_SINK_INPUT) {
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if ((t & PA_SUBSCRIPTION_EVENT_TYPE_MASK) == PA_SUBSCRIPTION_EVENT_CHANGE)
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// Calling from mainloop callback. No need to lock mainloop.
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pulse_update_sink_input_info(h);
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}
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}
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static void pulse_stream_writable(pa_stream *stream, size_t nbytes, void *userdata)
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{
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AVFormatContext *h = userdata;
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PulseData *s = h->priv_data;
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int64_t val = nbytes;
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if (stream != s->stream)
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return;
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avdevice_dev_to_app_control_message(h, AV_DEV_TO_APP_BUFFER_WRITABLE, &val, sizeof(val));
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pa_threaded_mainloop_signal(s->mainloop, 0);
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}
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static void pulse_overflow(pa_stream *stream, void *userdata)
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{
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AVFormatContext *h = userdata;
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avdevice_dev_to_app_control_message(h, AV_DEV_TO_APP_BUFFER_OVERFLOW, NULL, 0);
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}
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static void pulse_underflow(pa_stream *stream, void *userdata)
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{
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AVFormatContext *h = userdata;
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avdevice_dev_to_app_control_message(h, AV_DEV_TO_APP_BUFFER_UNDERFLOW, NULL, 0);
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}
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static void pulse_stream_state(pa_stream *stream, void *userdata)
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{
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PulseData *s = userdata;
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if (stream != s->stream)
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return;
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switch (pa_stream_get_state(s->stream)) {
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case PA_STREAM_READY:
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case PA_STREAM_FAILED:
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case PA_STREAM_TERMINATED:
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pa_threaded_mainloop_signal(s->mainloop, 0);
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default:
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break;
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}
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}
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static int pulse_stream_wait(PulseData *s)
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{
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pa_stream_state_t state;
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while ((state = pa_stream_get_state(s->stream)) != PA_STREAM_READY) {
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if (state == PA_STREAM_FAILED || state == PA_STREAM_TERMINATED)
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return AVERROR_EXTERNAL;
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pa_threaded_mainloop_wait(s->mainloop);
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}
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return 0;
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}
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static void pulse_context_state(pa_context *ctx, void *userdata)
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{
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PulseData *s = userdata;
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if (s->ctx != ctx)
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return;
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switch (pa_context_get_state(ctx)) {
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case PA_CONTEXT_READY:
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case PA_CONTEXT_FAILED:
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case PA_CONTEXT_TERMINATED:
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pa_threaded_mainloop_signal(s->mainloop, 0);
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default:
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break;
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}
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}
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static int pulse_context_wait(PulseData *s)
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{
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pa_context_state_t state;
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while ((state = pa_context_get_state(s->ctx)) != PA_CONTEXT_READY) {
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if (state == PA_CONTEXT_FAILED || state == PA_CONTEXT_TERMINATED)
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return AVERROR_EXTERNAL;
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pa_threaded_mainloop_wait(s->mainloop);
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}
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return 0;
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}
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static void pulse_stream_result(pa_stream *stream, int success, void *userdata)
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{
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PulseData *s = userdata;
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if (stream != s->stream)
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return;
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s->last_result = success ? 0 : AVERROR_EXTERNAL;
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pa_threaded_mainloop_signal(s->mainloop, 0);
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}
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static int pulse_finish_stream_operation(PulseData *s, pa_operation *op, const char *name)
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{
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if (!op) {
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pa_threaded_mainloop_unlock(s->mainloop);
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av_log(s, AV_LOG_ERROR, "%s failed.\n", name);
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return AVERROR_EXTERNAL;
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}
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s->last_result = 2;
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while (s->last_result == 2)
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pa_threaded_mainloop_wait(s->mainloop);
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pa_operation_unref(op);
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pa_threaded_mainloop_unlock(s->mainloop);
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if (s->last_result != 0)
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av_log(s, AV_LOG_ERROR, "%s failed.\n", name);
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return s->last_result;
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}
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static int pulse_set_pause(PulseData *s, int pause)
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{
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pa_operation *op;
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pa_threaded_mainloop_lock(s->mainloop);
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op = pa_stream_cork(s->stream, pause, pulse_stream_result, s);
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return pulse_finish_stream_operation(s, op, "pa_stream_cork");
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}
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static int pulse_flash_stream(PulseData *s)
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{
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pa_operation *op;
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pa_threaded_mainloop_lock(s->mainloop);
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op = pa_stream_flush(s->stream, pulse_stream_result, s);
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return pulse_finish_stream_operation(s, op, "pa_stream_flush");
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}
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static void pulse_context_result(pa_context *ctx, int success, void *userdata)
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{
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PulseData *s = userdata;
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if (s->ctx != ctx)
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return;
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s->last_result = success ? 0 : AVERROR_EXTERNAL;
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pa_threaded_mainloop_signal(s->mainloop, 0);
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}
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static int pulse_finish_context_operation(PulseData *s, pa_operation *op, const char *name)
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{
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if (!op) {
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pa_threaded_mainloop_unlock(s->mainloop);
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av_log(s, AV_LOG_ERROR, "%s failed.\n", name);
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return AVERROR_EXTERNAL;
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}
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s->last_result = 2;
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while (s->last_result == 2)
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pa_threaded_mainloop_wait(s->mainloop);
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pa_operation_unref(op);
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pa_threaded_mainloop_unlock(s->mainloop);
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if (s->last_result != 0)
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av_log(s, AV_LOG_ERROR, "%s failed.\n", name);
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return s->last_result;
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}
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static int pulse_set_mute(PulseData *s)
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{
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pa_operation *op;
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pa_threaded_mainloop_lock(s->mainloop);
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op = pa_context_set_sink_input_mute(s->ctx, pa_stream_get_index(s->stream),
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s->mute, pulse_context_result, s);
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return pulse_finish_context_operation(s, op, "pa_context_set_sink_input_mute");
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}
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static int pulse_set_volume(PulseData *s, double volume)
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{
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pa_operation *op;
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pa_cvolume cvol;
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pa_volume_t vol;
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const pa_sample_spec *ss = pa_stream_get_sample_spec(s->stream);
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vol = pa_sw_volume_multiply(lrint(volume * PA_VOLUME_NORM), s->base_volume);
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pa_cvolume_set(&cvol, ss->channels, PA_VOLUME_NORM);
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pa_sw_cvolume_multiply_scalar(&cvol, &cvol, vol);
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pa_threaded_mainloop_lock(s->mainloop);
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op = pa_context_set_sink_input_volume(s->ctx, pa_stream_get_index(s->stream),
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&cvol, pulse_context_result, s);
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return pulse_finish_context_operation(s, op, "pa_context_set_sink_input_volume");
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}
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static int pulse_subscribe_events(PulseData *s)
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{
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pa_operation *op;
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pa_threaded_mainloop_lock(s->mainloop);
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op = pa_context_subscribe(s->ctx, PA_SUBSCRIPTION_MASK_SINK_INPUT, pulse_context_result, s);
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return pulse_finish_context_operation(s, op, "pa_context_subscribe");
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}
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static void pulse_map_channels_to_pulse(const AVChannelLayout *channel_layout, pa_channel_map *channel_map)
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{
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channel_map->channels = 0;
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if (av_channel_layout_index_from_channel(channel_layout, AV_CHAN_FRONT_LEFT) >= 0)
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channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_FRONT_LEFT;
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if (av_channel_layout_index_from_channel(channel_layout, AV_CHAN_FRONT_RIGHT) >= 0)
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channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_FRONT_RIGHT;
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if (av_channel_layout_index_from_channel(channel_layout, AV_CHAN_FRONT_CENTER) >= 0)
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channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_FRONT_CENTER;
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if (av_channel_layout_index_from_channel(channel_layout, AV_CHAN_LOW_FREQUENCY) >= 0)
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channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_LFE;
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if (av_channel_layout_index_from_channel(channel_layout, AV_CHAN_BACK_LEFT) >= 0)
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channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_REAR_LEFT;
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if (av_channel_layout_index_from_channel(channel_layout, AV_CHAN_BACK_RIGHT) >= 0)
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channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_REAR_RIGHT;
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if (av_channel_layout_index_from_channel(channel_layout, AV_CHAN_FRONT_LEFT_OF_CENTER) >= 0)
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channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER;
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if (av_channel_layout_index_from_channel(channel_layout, AV_CHAN_FRONT_RIGHT_OF_CENTER) >= 0)
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channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER;
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if (av_channel_layout_index_from_channel(channel_layout, AV_CHAN_BACK_CENTER) >= 0)
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channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_REAR_CENTER;
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if (av_channel_layout_index_from_channel(channel_layout, AV_CHAN_SIDE_LEFT) >= 0)
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channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_SIDE_LEFT;
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if (av_channel_layout_index_from_channel(channel_layout, AV_CHAN_SIDE_RIGHT) >= 0)
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channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_SIDE_RIGHT;
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if (av_channel_layout_index_from_channel(channel_layout, AV_CHAN_TOP_CENTER) >= 0)
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channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_TOP_CENTER;
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if (av_channel_layout_index_from_channel(channel_layout, AV_CHAN_TOP_FRONT_LEFT) >= 0)
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channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_TOP_FRONT_LEFT;
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if (av_channel_layout_index_from_channel(channel_layout, AV_CHAN_TOP_FRONT_CENTER) >= 0)
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channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_TOP_FRONT_CENTER;
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if (av_channel_layout_index_from_channel(channel_layout, AV_CHAN_TOP_FRONT_RIGHT) >= 0)
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channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_TOP_FRONT_RIGHT;
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if (av_channel_layout_index_from_channel(channel_layout, AV_CHAN_TOP_BACK_LEFT) >= 0)
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channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_TOP_REAR_LEFT;
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if (av_channel_layout_index_from_channel(channel_layout, AV_CHAN_TOP_BACK_CENTER) >= 0)
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channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_TOP_REAR_CENTER;
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if (av_channel_layout_index_from_channel(channel_layout, AV_CHAN_TOP_BACK_RIGHT) >= 0)
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channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_TOP_REAR_RIGHT;
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if (av_channel_layout_index_from_channel(channel_layout, AV_CHAN_STEREO_LEFT) >= 0)
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channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_FRONT_LEFT;
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if (av_channel_layout_index_from_channel(channel_layout, AV_CHAN_STEREO_RIGHT) >= 0)
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channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_FRONT_RIGHT;
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if (av_channel_layout_index_from_channel(channel_layout, AV_CHAN_WIDE_LEFT) >= 0)
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channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_AUX0;
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if (av_channel_layout_index_from_channel(channel_layout, AV_CHAN_WIDE_RIGHT) >= 0)
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channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_AUX1;
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if (av_channel_layout_index_from_channel(channel_layout, AV_CHAN_SURROUND_DIRECT_LEFT) >= 0)
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channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_AUX2;
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if (av_channel_layout_index_from_channel(channel_layout, AV_CHAN_SURROUND_DIRECT_RIGHT) >= 0)
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channel_map->map[channel_map->channels++] = PA_CHANNEL_POSITION_AUX3;
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|
if (av_channel_layout_index_from_channel(channel_layout, AV_CHAN_LOW_FREQUENCY_2) >= 0)
|
|
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->ch_layout.nb_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->ch_layout.nb_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->ch_layout.order != AV_CHANNEL_ORDER_UNSPEC) {
|
|
if (!av_channel_layout_check(&st->codecpar->ch_layout))
|
|
return AVERROR(EINVAL);
|
|
pulse_map_channels_to_pulse(&st->codecpar->ch_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 default 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->ch_layout.nb_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)->ch_layout.nb_channels;
|
|
pkt.dts = (*frame)->pkt_dts;
|
|
#if FF_API_PKT_DURATION
|
|
FF_DISABLE_DEPRECATION_WARNINGS
|
|
if ((*frame)->pkt_duration)
|
|
pkt.duration = (*frame)->pkt_duration;
|
|
else
|
|
FF_ENABLE_DEPRECATION_WARNINGS
|
|
#endif
|
|
pkt.duration = (*frame)->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,
|
|
};
|
|
|
|
const FFOutputFormat ff_pulse_muxer = {
|
|
.p.name = "pulse",
|
|
.p.long_name = NULL_IF_CONFIG_SMALL("Pulse audio output"),
|
|
.priv_data_size = sizeof(PulseData),
|
|
.p.audio_codec = AV_NE(AV_CODEC_ID_PCM_S16BE, AV_CODEC_ID_PCM_S16LE),
|
|
.p.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,
|
|
#if FF_API_ALLOW_FLUSH
|
|
.p.flags = AVFMT_NOFILE | AVFMT_ALLOW_FLUSH,
|
|
#else
|
|
.p.flags = AVFMT_NOFILE,
|
|
#endif
|
|
.p.priv_class = &pulse_muxer_class,
|
|
.flags_internal = FF_FMT_ALLOW_FLUSH,
|
|
};
|