init

Telegram/SourceFiles/media/audio/media_audio_loader.cpp

@@ -0,0 +1,97 @@
+/*
+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