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25cffcb402
If we don't support this in any way, then we get into trouble when there is plenty of compressed data buffered but for some reason video decoding falls behind (maybe there was a short period where the video data wasn't available). Audio playback continues normally, but MediaOmxReader keeps making one call to ReadAudio and one to ReadVideo, and if each call to ReadAudio decodes at least as much as the calls to ReadVideo, video decoding can never catch up to the current audio playback position. So video never plays. And when the video decoding point gets far enough away from the audio decoding point, horrible things start to happen, such as video and audio reading completely different parts of the media cache and interfering with the caching mechanism (which assumes audio and video reads are close together). This patch approximates keyframe skipping, and is basically just a way for MediaOmxReader::DecodeVideoFrame to decode more than one frame at a time if we need video decoding to catch up. To prevent pathological situations, we cap both the maximum number of frames decoded per DecodeVideoFrame and the amount of time we spend in the method (excluding the time for the last frame). --HG-- extra : rebase_source : cba95c537fe97df5b696581be8233b6e9cffb70b |
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|---|---|---|
| .. | ||
| mediaresourcemanager | ||
| Makefile.in | ||
| MediaOmxDecoder.cpp | ||
| MediaOmxDecoder.h | ||
| MediaOmxReader.cpp | ||
| MediaOmxReader.h | ||
| MediaOmxStateMachine.h | ||
| moz.build | ||
| MPAPI.h | ||
| OMXCodecProxy.cpp | ||
| OMXCodecProxy.h | ||
| OmxDecoder.cpp | ||
| OmxDecoder.h | ||