Added ability to change playback speed for long audio files.

Telegram/SourceFiles/data/data_audio_msg_id.cpp

@@ -9,6 +9,12 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 
 #include "data/data_document.h"
 
+namespace {
+
+constexpr auto kMinLengthForChangeablePlaybackSpeed = 20 * TimeId(60); // 20 minutes.
+
+} // namespace
+
 AudioMsgId::AudioMsgId() {
 }
 
@@ -18,7 +24,10 @@ AudioMsgId::AudioMsgId(
 	uint32 externalPlayId)
 : _audio(audio)
 , _contextId(msgId)
-, _externalPlayId(externalPlayId) {
+, _externalPlayId(externalPlayId)
+, _changeablePlaybackSpeed(_audio->isVoiceMessage()
+	|| _audio->isVideoMessage()
+	|| (_audio->getDuration() >= kMinLengthForChangeablePlaybackSpeed)) {
 	setTypeFromAudio();
 }
 
@@ -62,6 +71,10 @@ uint32 AudioMsgId::externalPlayId() const {
 	return _externalPlayId;
 }
 
+bool AudioMsgId::changeablePlaybackSpeed() const {
+	return _changeablePlaybackSpeed;
+}
+
 AudioMsgId::operator bool() const {
 	return (_audio != nullptr) || (_externalPlayId != 0);
 }

Telegram/SourceFiles/data/data_audio_msg_id.h

@@ -9,7 +9,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 
 class DocumentData;
 
-class AudioMsgId {
+class AudioMsgId final {
 public:
 	enum class Type {
 		Unknown,
@@ -31,6 +31,7 @@ public:
 	[[nodiscard]] DocumentData *audio() const;
 	[[nodiscard]] FullMsgId contextId() const;
 	[[nodiscard]] uint32 externalPlayId() const;
+	[[nodiscard]] bool changeablePlaybackSpeed() const;
 	[[nodiscard]] explicit operator bool() const;
 
 	bool operator<(const AudioMsgId &other) const;
@@ -44,5 +45,6 @@ private:
 	Type _type = Type::Unknown;
 	FullMsgId _contextId;
 	uint32 _externalPlayId = 0;
+	bool _changeablePlaybackSpeed = false;
 
 };

Telegram/SourceFiles/media/player/media_player_instance.cpp

@@ -519,8 +519,7 @@ Streaming::PlaybackOptions Instance::streamingOptions(
 	result.mode = (document && document->isVideoMessage())
 		? Streaming::Mode::Both
 		: Streaming::Mode::Audio;
-	result.speed = (document
+	result.speed = audioId.changeablePlaybackSpeed()
-		&& (document->isVoiceMessage() || document->isVideoMessage()))
 		? VoicePlaybackSpeed()
 		: 1.;
 	result.audioId = audioId;
@@ -677,7 +676,10 @@ void Instance::cancelSeeking(AudioMsgId::Type type) {
 }
 
 void Instance::updateVoicePlaybackSpeed() {
-	if (const auto data = getData(AudioMsgId::Type::Voice)) {
+	if (const auto data = getData(getActiveType())) {
+		if (!data->current.changeablePlaybackSpeed()) {
+			return;
+		}
 		if (const auto streamed = data->streamed.get()) {
 			streamed->instance.setSpeed(VoicePlaybackSpeed());
 		}

Telegram/SourceFiles/media/player/media_player_widget.cpp

@@ -164,6 +164,8 @@ Widget::Widget(QWidget *parent, not_null<Main::Session*> session)
 	subscribe(instance()->trackChangedNotifier(), [this](AudioMsgId::Type type) {
 		if (type == _type) {
 			handleSongChange();
+			updateControlsVisibility();
+			updateLabelsGeometry();
 		}
 	});
 	subscribe(instance()->tracksFinishedNotifier(), [this](AudioMsgId::Type type) {
@@ -278,6 +280,10 @@ void Widget::handleSeekFinished(float64 progress) {
 }
 
 void Widget::resizeEvent(QResizeEvent *e) {
+	updateControlsGeometry();
+}
+
+void Widget::updateControlsGeometry() {
 	auto right = st::mediaPlayerCloseRight;
 	_close->moveToRight(right, st::mediaPlayerPlayTop); right += _close->width();
 	if (hasPlaybackSpeedControl()) {
@@ -371,7 +377,8 @@ int Widget::getLabelsRight() const {
 	auto result = st::mediaPlayerCloseRight + _close->width();
 	if (_type == AudioMsgId::Type::Song) {
 		result += _repeatTrack->width() + _volumeToggle->width();
-	} else if (hasPlaybackSpeedControl()) {
+	}
+	if (hasPlaybackSpeedControl()) {
 		result += _playbackSpeed->width();
 	}
 	result += st::mediaPlayerPadding;
@@ -421,21 +428,26 @@ void Widget::checkForTypeChange() {
 }
 
 bool Widget::hasPlaybackSpeedControl() const {
-	return (_type == AudioMsgId::Type::Voice)
+	return _lastSongId.changeablePlaybackSpeed()
 		&& Media::Audio::SupportsSpeedControl();
 }
 
+void Widget::updateControlsVisibility() {
+	_repeatTrack->setVisible(_type == AudioMsgId::Type::Song);
+	_volumeToggle->setVisible(_type == AudioMsgId::Type::Song);
+	_playbackSpeed->setVisible(hasPlaybackSpeedControl());
+	if (!_shadow->isHidden()) {
+		_playbackSlider->setVisible(_type == AudioMsgId::Type::Song);
+	}
+	updateControlsGeometry();
+}
+
 void Widget::setType(AudioMsgId::Type type) {
 	if (_type != type) {
 		_type = type;
-		_repeatTrack->setVisible(_type == AudioMsgId::Type::Song);
-		_volumeToggle->setVisible(_type == AudioMsgId::Type::Song);
-		_playbackSpeed->setVisible(hasPlaybackSpeedControl());
-		if (!_shadow->isHidden()) {
-			_playbackSlider->setVisible(_type == AudioMsgId::Type::Song);
-		}
-		updateLabelsGeometry();
 		handleSongChange();
+		updateControlsVisibility();
+		updateLabelsGeometry();
 		handleSongUpdate(instance()->getState(_type));
 		updateOverLabelsState(_labelsOver);
 		_playlistChangesLifetime = instance()->playlistChanges(

Telegram/SourceFiles/media/player/media_player_widget.h

@@ -75,6 +75,8 @@ private:
 	void updatePlayPrevNextPositions();
 	void updateLabelsGeometry();
 	void updateRepeatTrackIcon();
+	void updateControlsVisibility();
+	void updateControlsGeometry();
 	void updatePlaybackSpeedIcon();
 	void createPrevNextButtons();
 	void destroyPrevNextButtons();