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Code Issues Releases Wiki Activity

Support streaming speed changing.

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This commit is contained in:
John Preston
2019-02-21 20:01:55 +04:00
parent a7d9281768
commit 93c548c013
12 changed files with 296 additions and 116 deletions
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35
Telegram/SourceFiles/media/streaming/media_streaming_player.cpp
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@@ -11,6 +11,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
#include "media/streaming/media_streaming_loader.h"
#include "media/streaming/media_streaming_audio_track.h"
#include "media/streaming/media_streaming_video_track.h"
#include "media/audio/media_audio.h" // for SupportsSpeedControl()
namespace Media {
namespace Streaming {
@@ -315,12 +316,15 @@ void Player::play(const PlaybackOptions &options) {
stop();
_options = options;
if (!Media::Audio::SupportsSpeedControl()) {
_options.speed = 1.;
}
_stage = Stage::Initializing;
_file->start(delegate(), _options.position);
}
void Player::pause() {
Expects(_stage != Stage::Uninitialized && _stage != Stage::Failed);
Expects(valid());
if (_paused) {
return;
@@ -338,7 +342,7 @@ void Player::pause() {
}
void Player::resume() {
Expects(_stage != Stage::Uninitialized && _stage != Stage::Failed);
Expects(valid());
if (!_paused) {
return;
@@ -386,6 +390,7 @@ void Player::stop() {
_audio = nullptr;
_video = nullptr;
_paused = false;
_information = Information();
invalidate_weak_ptrs(&_sessionGuard);
if (_stage != Stage::Failed) {
_stage = Stage::Uninitialized;
@@ -405,6 +410,32 @@ bool Player::paused() const {
return _paused;
}
void Player::setSpeed(float64 speed) {
Expects(valid());
Expects(speed >= 0.5 && speed <= 2.);
if (!Media::Audio::SupportsSpeedControl()) {
speed = 1.;
}
if (_options.speed != speed) {
_options.speed = speed;
if (_audio) {
_audio->setSpeed(speed);
}
if (_video) {
_video->setSpeed(speed);
}
}
}
bool Player::valid() const {
return (_stage != Stage::Uninitialized) && (_stage != Stage::Failed);
}
bool Player::ready() const {
return valid() && (_stage != Stage::Initializing);
}
rpl::producer<Update, Error> Player::updates() const {
return _updates.events();
}