tdesktop/Telegram/SourceFiles/media/audio/media_audio_loader.cpp

98 lines
2.2 KiB
C++

/*
This file is part of Telegram Desktop,
the official desktop application for the Telegram messaging service.
For license and copyright information please follow this link:
https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
*/
#include "media/audio/media_audio_loader.h"
namespace Media {
AudioPlayerLoader::AudioPlayerLoader(
const Core::FileLocation &file,
const QByteArray &data,
bytes::vector &&buffer)
: _file(file)
, _data(data)
, _bytes(std::move(buffer)) {
}
AudioPlayerLoader::~AudioPlayerLoader() {
if (_access) {
_file.accessDisable();
_access = false;
}
}
bool AudioPlayerLoader::check(
const Core::FileLocation &file,
const QByteArray &data) {
return (this->_file == file) && (this->_data.size() == data.size());
}
void AudioPlayerLoader::saveDecodedSamples(not_null<QByteArray*> samples) {
Expects(_savedSamples.isEmpty());
Expects(!_holdsSavedSamples);
samples->swap(_savedSamples);
_holdsSavedSamples = true;
}
void AudioPlayerLoader::takeSavedDecodedSamples(
not_null<QByteArray*> samples) {
Expects(samples->isEmpty());
Expects(_holdsSavedSamples);
samples->swap(_savedSamples);
_holdsSavedSamples = false;
}
bool AudioPlayerLoader::holdsSavedDecodedSamples() const {
return _holdsSavedSamples;
}
void AudioPlayerLoader::dropDecodedSamples() {
_savedSamples = {};
_holdsSavedSamples = false;
}
int AudioPlayerLoader::bytesPerBuffer() {
if (!_bytesPerBuffer) {
_bytesPerBuffer = samplesFrequency() * sampleSize();
}
return _bytesPerBuffer;
}
bool AudioPlayerLoader::openFile() {
if (_data.isEmpty() && _bytes.empty()) {
if (_f.isOpen()) _f.close();
if (!_access) {
if (!_file.accessEnable()) {
LOG(("Audio Error: could not open file access '%1', "
"data size '%2', error %3, %4"
).arg(_file.name()
).arg(_data.size()
).arg(_f.error()
).arg(_f.errorString()));
return false;
}
_access = true;
}
_f.setFileName(_file.name());
if (!_f.open(QIODevice::ReadOnly)) {
LOG(("Audio Error: could not open file '%1', "
"data size '%2', error %3, %4"
).arg(_file.name()
).arg(_data.size()
).arg(_f.error()
).arg(_f.errorString()));
return false;
}
}
_dataPos = 0;
return true;
}
} // namespace Media