void MediaPlayerPrivateAVFoundation::play()
{
LOG(Media, "MediaPlayerPrivateAVFoundation::play(%p)", this);
// If the file has video, don't request playback until the first frame of video is ready to display
// or the audio may start playing before we can render video.
if (!m_cachedHasVideo || hasAvailableVideoFrame())
platformPlay();
else
m_playWhenFramesAvailable = true;
}
void MediaPlayerPrivateAVFoundation::updateStates()
{
if (m_ignoreLoadStateChanges)
return;
MediaPlayer::NetworkState newNetworkState = m_networkState;
MediaPlayer::ReadyState newReadyState = m_readyState;
if (m_loadingMetadata)
newNetworkState = MediaPlayer::Loading;
else {
// -loadValuesAsynchronouslyForKeys:completionHandler: has invoked its handler; test status of keys and determine state.
AssetStatus assetStatus = this->assetStatus();
ItemStatus itemStatus = playerItemStatus();
m_assetIsPlayable = (assetStatus == MediaPlayerAVAssetStatusPlayable);
if (m_readyState < MediaPlayer::HaveMetadata && assetStatus > MediaPlayerAVAssetStatusLoading) {
if (m_assetIsPlayable) {
if (assetStatus >= MediaPlayerAVAssetStatusLoaded)
newReadyState = MediaPlayer::HaveMetadata;
if (itemStatus <= MediaPlayerAVPlayerItemStatusUnknown) {
if (assetStatus == MediaPlayerAVAssetStatusFailed || m_preload > MediaPlayer::MetaData || isLiveStream()) {
// The asset is playable but doesn't support inspection prior to playback (eg. streaming files),
// or we are supposed to prepare for playback immediately, so create the player item now.
newNetworkState = MediaPlayer::Loading;
prepareToPlay();
} else
newNetworkState = MediaPlayer::Idle;
}
} else {
// FIX ME: fetch the error associated with the @"playable" key to distinguish between format
// and network errors.
newNetworkState = MediaPlayer::FormatError;
}
}
if (assetStatus >= MediaPlayerAVAssetStatusLoaded && itemStatus > MediaPlayerAVPlayerItemStatusUnknown) {
switch (itemStatus) {
case MediaPlayerAVPlayerItemStatusDoesNotExist:
case MediaPlayerAVPlayerItemStatusUnknown:
case MediaPlayerAVPlayerItemStatusFailed:
break;
case MediaPlayerAVPlayerItemStatusPlaybackLikelyToKeepUp:
case MediaPlayerAVPlayerItemStatusPlaybackBufferFull:
// If the status becomes PlaybackBufferFull, loading stops and the status will not
// progress to LikelyToKeepUp. Set the readyState to HAVE_ENOUGH_DATA, on the
// presumption that if the playback buffer is full, playback will probably not stall.
newReadyState = MediaPlayer::HaveEnoughData;
break;
case MediaPlayerAVPlayerItemStatusReadyToPlay:
if (m_readyState != MediaPlayer::HaveEnoughData && maxTimeLoaded() > currentMediaTime())
newReadyState = MediaPlayer::HaveFutureData;
break;
case MediaPlayerAVPlayerItemStatusPlaybackBufferEmpty:
newReadyState = MediaPlayer::HaveCurrentData;
break;
}
if (itemStatus == MediaPlayerAVPlayerItemStatusPlaybackBufferFull)
newNetworkState = MediaPlayer::Idle;
else if (itemStatus == MediaPlayerAVPlayerItemStatusFailed)
newNetworkState = MediaPlayer::DecodeError;
else if (itemStatus != MediaPlayerAVPlayerItemStatusPlaybackBufferFull && itemStatus >= MediaPlayerAVPlayerItemStatusReadyToPlay)
newNetworkState = (maxTimeLoaded() == durationMediaTime()) ? MediaPlayer::Loaded : MediaPlayer::Loading;
}
}
if (isReadyForVideoSetup() && currentRenderingMode() != preferredRenderingMode())
setUpVideoRendering();
if (!m_haveReportedFirstVideoFrame && m_cachedHasVideo && hasAvailableVideoFrame()) {
if (m_readyState < MediaPlayer::HaveCurrentData)
newReadyState = MediaPlayer::HaveCurrentData;
m_haveReportedFirstVideoFrame = true;
m_player->firstVideoFrameAvailable();
}
#if !LOG_DISABLED
if (m_networkState != newNetworkState || m_readyState != newReadyState) {
LOG(Media, "MediaPlayerPrivateAVFoundation::updateStates(%p) - entered with networkState = %i, readyState = %i, exiting with networkState = %i, readyState = %i",
this, static_cast<int>(m_networkState), static_cast<int>(m_readyState), static_cast<int>(newNetworkState), static_cast<int>(newReadyState));
}
#endif
setNetworkState(newNetworkState);
setReadyState(newReadyState);
if (m_playWhenFramesAvailable && hasAvailableVideoFrame()) {
m_playWhenFramesAvailable = false;
platformPlay();
}
}
void MediaPlayerPrivateAVFoundation::updateStates()
{
if (m_ignoreLoadStateChanges)
return;
MediaPlayer::NetworkState oldNetworkState = m_networkState;
MediaPlayer::ReadyState oldReadyState = m_readyState;
LOG(Media, "MediaPlayerPrivateAVFoundation::updateStates(%p) - entering with networkState = %i, readyState = %i",
this, static_cast<int>(m_networkState), static_cast<int>(m_readyState));
if (m_loadingMetadata)
m_networkState = MediaPlayer::Loading;
else {
// -loadValuesAsynchronouslyForKeys:completionHandler: has invoked its handler; test status of keys and determine state.
AssetStatus assetStatus = this->assetStatus();
ItemStatus itemStatus = playerItemStatus();
m_assetIsPlayable = (assetStatus == MediaPlayerAVAssetStatusPlayable);
if (m_readyState < MediaPlayer::HaveMetadata && assetStatus > MediaPlayerAVAssetStatusLoading) {
if (m_assetIsPlayable) {
if (assetStatus >= MediaPlayerAVAssetStatusLoaded)
m_readyState = MediaPlayer::HaveMetadata;
if (itemStatus <= MediaPlayerAVPlayerItemStatusUnknown) {
if (assetStatus == MediaPlayerAVAssetStatusFailed || m_preload > MediaPlayer::MetaData || isLiveStream()) {
// The asset is playable but doesn't support inspection prior to playback (eg. streaming files),
// or we are supposed to prepare for playback immediately, so create the player item now.
m_networkState = MediaPlayer::Loading;
prepareToPlay();
} else
m_networkState = MediaPlayer::Idle;
}
} else {
// FIX ME: fetch the error associated with the @"playable" key to distinguish between format
// and network errors.
m_networkState = MediaPlayer::FormatError;
}
}
if (assetStatus >= MediaPlayerAVAssetStatusLoaded && itemStatus > MediaPlayerAVPlayerItemStatusUnknown) {
switch (itemStatus) {
case MediaPlayerAVPlayerItemStatusDoesNotExist:
case MediaPlayerAVPlayerItemStatusUnknown:
case MediaPlayerAVPlayerItemStatusFailed:
break;
case MediaPlayerAVPlayerItemStatusPlaybackLikelyToKeepUp:
m_readyState = MediaPlayer::HaveEnoughData;
break;
case MediaPlayerAVPlayerItemStatusPlaybackBufferFull:
case MediaPlayerAVPlayerItemStatusReadyToPlay:
// If the readyState is already HaveEnoughData, don't go lower because of this state change.
if (m_readyState == MediaPlayer::HaveEnoughData)
break;
case MediaPlayerAVPlayerItemStatusPlaybackBufferEmpty:
if (maxTimeLoaded() > currentTime())
m_readyState = MediaPlayer::HaveFutureData;
else
m_readyState = MediaPlayer::HaveCurrentData;
break;
}
if (itemStatus == MediaPlayerAVPlayerItemStatusPlaybackBufferFull)
m_networkState = MediaPlayer::Idle;
else if (itemStatus == MediaPlayerAVPlayerItemStatusFailed)
m_networkState = MediaPlayer::DecodeError;
else if (itemStatus != MediaPlayerAVPlayerItemStatusPlaybackBufferFull && itemStatus >= MediaPlayerAVPlayerItemStatusReadyToPlay)
m_networkState = (maxTimeLoaded() == duration()) ? MediaPlayer::Loaded : MediaPlayer::Loading;
}
}
if (isReadyForVideoSetup() && currentRenderingMode() != preferredRenderingMode())
setUpVideoRendering();
if (!m_haveReportedFirstVideoFrame && m_cachedHasVideo && hasAvailableVideoFrame()) {
if (m_readyState < MediaPlayer::HaveCurrentData)
m_readyState = MediaPlayer::HaveCurrentData;
m_haveReportedFirstVideoFrame = true;
m_player->firstVideoFrameAvailable();
}
if (m_networkState != oldNetworkState)
m_player->networkStateChanged();
if (m_readyState != oldReadyState)
m_player->readyStateChanged();
if (m_playWhenFramesAvailable && hasAvailableVideoFrame()) {
m_playWhenFramesAvailable = false;
platformPlay();
}
LOG(Media, "MediaPlayerPrivateAVFoundation::updateStates(%p) - exiting with networkState = %i, readyState = %i",
this, static_cast<int>(m_networkState), static_cast<int>(m_readyState));
}