152 lines
4.0 KiB
C++
152 lines
4.0 KiB
C++
/*
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This file is part of Telegram Desktop,
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the official desktop application for the Telegram messaging service.
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For license and copyright information please follow this link:
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https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
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*/
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#include "media/view/media_view_playback_progress.h"
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#include "media/audio/media_audio.h"
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#include "styles/style_mediaview.h"
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namespace Media {
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namespace View {
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namespace {
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constexpr auto kPlaybackAnimationDurationMs = crl::time(200);
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} // namespace
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PlaybackProgress::PlaybackProgress()
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: _a_value([=](crl::time now) { return valueAnimationCallback(now); })
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, _a_receivedTill([=](crl::time now) { return receivedTillAnimationCallback(now); }) {
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}
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void PlaybackProgress::updateState(const Player::TrackState &state) {
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_playing = !Player::IsStopped(state.state);
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const auto length = state.length;
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const auto position = Player::IsStoppedAtEnd(state.state)
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? state.length
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: Player::IsStoppedOrStopping(state.state)
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? 0
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: state.position;
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const auto receivedTill = (length && state.receivedTill > position)
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? state.receivedTill
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: -1;
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const auto wasInLoadingState = _inLoadingState;
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if (wasInLoadingState) {
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_inLoadingState = false;
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if (_inLoadingStateChanged) {
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_inLoadingStateChanged(false);
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}
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}
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const auto progress = (position > length)
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? 1.
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: length
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? snap(float64(position) / length, 0., 1.)
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: 0.;
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const auto receivedTillProgress = (receivedTill > position)
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? snap(float64(receivedTill) / length, 0., 1.)
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: -1.;
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const auto animatedPosition = position + (state.frequency * kPlaybackAnimationDurationMs / 1000);
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const auto animatedProgress = length ? qMax(float64(animatedPosition) / length, 0.) : 0.;
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if (length != _length || position != _position || wasInLoadingState) {
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if (auto animated = (length && _length && animatedProgress > value())) {
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setValue(animatedProgress, animated);
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} else {
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setValue(progress, animated);
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}
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_position = position;
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_length = length;
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}
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if (receivedTill != _receivedTill) {
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setReceivedTill(receivedTillProgress);
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_receivedTill = receivedTill;
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}
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}
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void PlaybackProgress::updateLoadingState(float64 progress) {
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if (!_inLoadingState) {
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_inLoadingState = true;
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if (_inLoadingStateChanged) {
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_inLoadingStateChanged(true);
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}
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}
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auto animated = (progress > value());
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setValue(progress, animated);
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}
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float64 PlaybackProgress::value() const {
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return qMin(a_value.current(), 1.);
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}
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void PlaybackProgress::setValue(float64 value, bool animated) {
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if (animated) {
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valueAnimationCallback(crl::now());
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a_value.start(value);
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_a_value.start();
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} else {
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a_value = anim::value(value, value);
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_a_value.stop();
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}
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emitUpdatedValue();
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}
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void PlaybackProgress::setReceivedTill(float64 value) {
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const auto current = a_receivedTill.current();
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if (value > current && current > 0.) {
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receivedTillAnimationCallback(crl::now());
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a_receivedTill.start(value);
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_a_receivedTill.start();
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} else if (value > a_value.current()) {
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a_receivedTill = anim::value(a_value.current(), value);
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_a_receivedTill.start();
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} else {
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a_receivedTill = anim::value(-1., -1.);
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_a_receivedTill.stop();
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}
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emitUpdatedValue();
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}
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bool PlaybackProgress::valueAnimationCallback(float64 now) {
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const auto time = (now - _a_value.started());
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const auto dt = anim::Disabled()
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? 1.
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: (time / kPlaybackAnimationDurationMs);
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if (dt >= 1.) {
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a_value.finish();
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} else {
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a_value.update(dt, anim::linear);
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}
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emitUpdatedValue();
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return (dt < 1.);
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}
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bool PlaybackProgress::receivedTillAnimationCallback(float64 now) {
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const auto time = now - _a_receivedTill.started();
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const auto dt = anim::Disabled()
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? 1.
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: (time / kPlaybackAnimationDurationMs);
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if (dt >= 1.) {
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a_receivedTill.finish();
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} else {
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a_receivedTill.update(dt, anim::linear);
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}
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emitUpdatedValue();
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return (dt < 1.);
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}
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void PlaybackProgress::emitUpdatedValue() {
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if (_valueChanged) {
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const auto value = a_value.current();
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const auto receivedTill = a_receivedTill.current();
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_valueChanged(value, std::max(value, receivedTill));
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}
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}
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} // namespace View
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} // namespace Media
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