tdesktop/Telegram/SourceFiles/media/media_audio_loaders.cpp
John Preston 08167a6a91 Removed #include "stdafx.h" from all files.
Currently the build without implicitly included precompiled header
is not supported anyway (because Qt MOC source files do not include
stdafx.h, they include plain headers).

So when we decide to support building without implicitly included
precompiled headers we'll have to fix all the headers anyway.
2017-03-04 12:27:52 +03:00

396 lines
11 KiB
C++

/*
This file is part of Telegram Desktop,
the official desktop version of Telegram messaging app, see https://telegram.org
Telegram Desktop is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
It 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 General Public License for more details.
In addition, as a special exception, the copyright holders give permission
to link the code of portions of this program with the OpenSSL library.
Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
Copyright (c) 2014-2017 John Preston, https://desktop.telegram.org
*/
#include "media/media_audio_loaders.h"
#include "media/media_audio.h"
#include "media/media_audio_ffmpeg_loader.h"
#include "media/media_child_ffmpeg_loader.h"
namespace Media {
namespace Player {
Loaders::Loaders(QThread *thread) : _fromVideoNotify(this, "onVideoSoundAdded") {
moveToThread(thread);
connect(thread, SIGNAL(started()), this, SLOT(onInit()));
connect(thread, SIGNAL(finished()), this, SLOT(deleteLater()));
}
void Loaders::feedFromVideo(VideoSoundPart &&part) {
bool invoke = false;
{
QMutexLocker lock(&_fromVideoMutex);
if (_fromVideoPlayId == part.videoPlayId) {
_fromVideoQueue.enqueue(FFMpeg::dataWrapFromPacket(*part.packet));
invoke = true;
} else {
FFMpeg::freePacket(part.packet);
}
}
if (invoke) {
_fromVideoNotify.call();
}
}
void Loaders::startFromVideo(uint64 videoPlayId) {
QMutexLocker lock(&_fromVideoMutex);
_fromVideoPlayId = videoPlayId;
clearFromVideoQueue();
}
void Loaders::stopFromVideo() {
startFromVideo(0);
}
void Loaders::onVideoSoundAdded() {
bool waitingAndAdded = false;
{
QMutexLocker lock(&_fromVideoMutex);
if (_videoLoader && _videoLoader->playId() == _fromVideoPlayId && !_fromVideoQueue.isEmpty()) {
_videoLoader->enqueuePackets(_fromVideoQueue);
waitingAndAdded = _videoLoader->holdsSavedDecodedSamples();
}
}
if (waitingAndAdded) {
onLoad(_video);
}
}
Loaders::~Loaders() {
QMutexLocker lock(&_fromVideoMutex);
clearFromVideoQueue();
}
void Loaders::clearFromVideoQueue() {
auto queue = base::take(_fromVideoQueue);
for (auto &packetData : queue) {
AVPacket packet;
FFMpeg::packetFromDataWrap(packet, packetData);
FFMpeg::freePacket(&packet);
}
}
void Loaders::onInit() {
}
void Loaders::onStart(const AudioMsgId &audio, qint64 position) {
auto type = audio.type();
clear(type);
{
QMutexLocker lock(internal::audioPlayerMutex());
if (!mixer()) return;
auto track = mixer()->trackForType(type);
if (!track) return;
track->loading = true;
}
loadData(audio, position);
}
AudioMsgId Loaders::clear(AudioMsgId::Type type) {
AudioMsgId result;
switch (type) {
case AudioMsgId::Type::Voice: std::swap(result, _audio); _audioLoader = nullptr; break;
case AudioMsgId::Type::Song: std::swap(result, _song); _songLoader = nullptr; break;
case AudioMsgId::Type::Video: std::swap(result, _video); _videoLoader = nullptr; break;
}
return result;
}
void Loaders::setStoppedState(Mixer::Track *track, State state) {
track->state.state = state;
track->state.position = 0;
}
void Loaders::emitError(AudioMsgId::Type type) {
emit error(clear(type));
}
void Loaders::onLoad(const AudioMsgId &audio) {
loadData(audio, 0);
}
void Loaders::loadData(AudioMsgId audio, qint64 position) {
auto err = SetupNoErrorStarted;
auto type = audio.type();
auto l = setupLoader(audio, err, position);
if (!l) {
if (err == SetupErrorAtStart) {
emitError(type);
}
return;
}
auto started = (err == SetupNoErrorStarted);
auto finished = false;
auto waiting = false;
auto errAtStart = started;
QByteArray samples;
int64 samplesCount = 0;
if (l->holdsSavedDecodedSamples()) {
l->takeSavedDecodedSamples(&samples, &samplesCount);
}
while (samples.size() < AudioVoiceMsgBufferSize) {
auto res = l->readMore(samples, samplesCount);
using Result = AudioPlayerLoader::ReadResult;
if (res == Result::Error) {
if (errAtStart) {
{
QMutexLocker lock(internal::audioPlayerMutex());
if (auto track = checkLoader(type)) {
track->state.state = State::StoppedAtStart;
}
}
emitError(type);
return;
}
finished = true;
break;
} else if (res == Result::EndOfFile) {
finished = true;
break;
} else if (res == Result::Ok) {
errAtStart = false;
} else if (res == Result::Wait) {
waiting = (samples.size() < AudioVoiceMsgBufferSize);
if (waiting) {
l->saveDecodedSamples(&samples, &samplesCount);
}
break;
}
QMutexLocker lock(internal::audioPlayerMutex());
if (!checkLoader(type)) {
clear(type);
return;
}
}
QMutexLocker lock(internal::audioPlayerMutex());
auto track = checkLoader(type);
if (!track) {
clear(type);
return;
}
if (started) {
mixer()->reattachTracks();
track->started();
if (!internal::audioCheckError()) {
setStoppedState(track, State::StoppedAtStart);
emitError(type);
return;
}
track->bufferedPosition = position;
track->state.position = position;
track->fadeStartPosition = position;
track->format = l->format();
track->frequency = l->frequency();
}
if (samplesCount) {
track->ensureStreamCreated();
auto bufferIndex = track->getNotQueuedBufferIndex();
if (!internal::audioCheckError()) {
setStoppedState(track, State::StoppedAtError);
emitError(type);
return;
}
if (bufferIndex < 0) { // No free buffers, wait.
l->saveDecodedSamples(&samples, &samplesCount);
return;
}
track->bufferSamples[bufferIndex] = samples;
track->samplesCount[bufferIndex] = samplesCount;
track->bufferedLength += samplesCount;
alBufferData(track->stream.buffers[bufferIndex], track->format, samples.constData(), samples.size(), track->frequency);
alSourceQueueBuffers(track->stream.source, 1, track->stream.buffers + bufferIndex);
if (!internal::audioCheckError()) {
setStoppedState(track, State::StoppedAtError);
emitError(type);
return;
}
} else {
if (waiting) {
return;
}
finished = true;
}
if (finished) {
track->loaded = true;
track->state.duration = track->bufferedPosition + track->bufferedLength;
clear(type);
}
track->loading = false;
if (track->state.state == State::Resuming || track->state.state == State::Playing || track->state.state == State::Starting) {
ALint state = AL_INITIAL;
alGetSourcei(track->stream.source, AL_SOURCE_STATE, &state);
if (internal::audioCheckError()) {
if (state != AL_PLAYING) {
if (state == AL_STOPPED && !internal::CheckAudioDeviceConnected()) {
return;
}
alSourcef(track->stream.source, AL_GAIN, ComputeVolume(type));
if (!internal::audioCheckError()) {
setStoppedState(track, State::StoppedAtError);
emitError(type);
return;
}
alSourcePlay(track->stream.source);
if (!internal::audioCheckError()) {
setStoppedState(track, State::StoppedAtError);
emitError(type);
return;
}
emit needToCheck();
}
} else {
setStoppedState(track, State::StoppedAtError);
emitError(type);
}
}
}
AudioPlayerLoader *Loaders::setupLoader(const AudioMsgId &audio, SetupError &err, qint64 &position) {
err = SetupErrorAtStart;
QMutexLocker lock(internal::audioPlayerMutex());
if (!mixer()) return nullptr;
auto track = mixer()->trackForType(audio.type());
if (!track || track->state.id != audio || !track->loading) {
emit error(audio);
LOG(("Audio Error: trying to load part of audio, that is not current at the moment"));
err = SetupErrorNotPlaying;
return nullptr;
}
bool isGoodId = false;
AudioPlayerLoader *l = nullptr;
switch (audio.type()) {
case AudioMsgId::Type::Voice: l = _audioLoader.get(); isGoodId = (_audio == audio); break;
case AudioMsgId::Type::Song: l = _songLoader.get(); isGoodId = (_song == audio); break;
case AudioMsgId::Type::Video: l = _videoLoader.get(); isGoodId = (_video == audio); break;
}
if (l && (!isGoodId || !l->check(track->file, track->data))) {
clear(audio.type());
l = nullptr;
}
if (!l) {
std::unique_ptr<AudioPlayerLoader> *loader = nullptr;
switch (audio.type()) {
case AudioMsgId::Type::Voice: _audio = audio; loader = &_audioLoader; break;
case AudioMsgId::Type::Song: _song = audio; loader = &_songLoader; break;
case AudioMsgId::Type::Video: _video = audio; break;
}
if (audio.type() == AudioMsgId::Type::Video) {
if (!track->videoData) {
track->state.state = State::StoppedAtError;
emit error(audio);
LOG(("Audio Error: video sound data not ready"));
return nullptr;
}
_videoLoader = std::make_unique<ChildFFMpegLoader>(track->videoPlayId, std::move(track->videoData));
l = _videoLoader.get();
} else {
*loader = std::make_unique<FFMpegLoader>(track->file, track->data);
l = loader->get();
}
if (!l->open(position)) {
track->state.state = State::StoppedAtStart;
return nullptr;
}
int64 duration = l->duration();
if (duration <= 0) {
track->state.state = State::StoppedAtStart;
return nullptr;
}
track->state.duration = duration;
track->state.frequency = l->frequency();
if (!track->state.frequency) track->state.frequency = kDefaultFrequency;
err = SetupNoErrorStarted;
} else if (track->loaded) {
err = SetupErrorLoadedFull;
LOG(("Audio Error: trying to load part of audio, that is already loaded to the end"));
return nullptr;
}
return l;
}
Mixer::Track *Loaders::checkLoader(AudioMsgId::Type type) {
if (!mixer()) return nullptr;
auto track = mixer()->trackForType(type);
auto isGoodId = false;
AudioPlayerLoader *l = nullptr;
switch (type) {
case AudioMsgId::Type::Voice: l = _audioLoader.get(); isGoodId = (track->state.id == _audio); break;
case AudioMsgId::Type::Song: l = _songLoader.get(); isGoodId = (track->state.id == _song); break;
case AudioMsgId::Type::Video: l = _videoLoader.get(); isGoodId = (track->state.id == _video); break;
}
if (!l || !track) return nullptr;
if (!isGoodId || !track->loading || !l->check(track->file, track->data)) {
LOG(("Audio Error: playing changed while loading"));
return nullptr;
}
return track;
}
void Loaders::onCancel(const AudioMsgId &audio) {
switch (audio.type()) {
case AudioMsgId::Type::Voice: if (_audio == audio) clear(audio.type()); break;
case AudioMsgId::Type::Song: if (_song == audio) clear(audio.type()); break;
case AudioMsgId::Type::Video: if (_video == audio) clear(audio.type()); break;
}
QMutexLocker lock(internal::audioPlayerMutex());
if (!mixer()) return;
for (auto i = 0; i != kTogetherLimit; ++i) {
auto track = mixer()->trackForType(audio.type(), i);
if (track->state.id == audio) {
track->loading = false;
}
}
}
} // namespace Player
} // namespace Media