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Relanding 4597 - Don't force key frame when decoding with errors.

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Makes sure that incomplete key frame or delta frames will be released from the JB when decoding with errors.
The decoder in turn will trigger a PLI until a complete key frame is received in order to start a session.

TBR=stefan@webrtc.org

BUG=

Review URL: https://webrtc-codereview.appspot.com/2097004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@4607 4adac7df-926f-26a2-2b94-8c16560cd09d
This commit is contained in:
mikhal@webrtc.org
2013-08-23 21:54:50 +00:00
parent 442709ea96
commit b2c28c3699
11 changed files with 123 additions and 83 deletions
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23
webrtc/modules/video_coding/main/source/generic_decoder.cc
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@ -133,9 +133,7 @@ _frameInfos(),
_nextFrameInfoIdx(0),
_decoder(decoder),
_codecType(kVideoCodecUnknown),
_isExternal(isExternal),
_requireKeyFrame(false),
_keyFrameDecoded(false)
_isExternal(isExternal)
{
}
@ -144,11 +142,8 @@ VCMGenericDecoder::~VCMGenericDecoder()
}
int32_t VCMGenericDecoder::InitDecode(const VideoCodec* settings,
int32_t numberOfCores,
bool requireKeyFrame)
int32_t numberOfCores)
{
_requireKeyFrame = requireKeyFrame;
_keyFrameDecoded = false;
_codecType = settings->codecType;
return _decoder.InitDecode(settings, numberOfCores);
@ -157,15 +152,6 @@ int32_t VCMGenericDecoder::InitDecode(const VideoCodec* settings,
int32_t VCMGenericDecoder::Decode(const VCMEncodedFrame& frame,
int64_t nowMs)
{
if (_requireKeyFrame &&
!_keyFrameDecoded &&
frame.FrameType() != kVideoFrameKey &&
frame.FrameType() != kVideoFrameGolden)
{
// Require key frame is enabled, meaning that one key frame must be decoded
// before we can decode delta frames.
return VCM_CODEC_ERROR;
}
_frameInfos[_nextFrameInfoIdx].decodeStartTimeMs = nowMs;
_frameInfos[_nextFrameInfoIdx].renderTimeMs = frame.RenderTimeMs();
_callback->Map(frame.TimeStamp(), &_frameInfos[_nextFrameInfoIdx]);
@ -194,22 +180,17 @@ int32_t VCMGenericDecoder::Decode(const VCMEncodedFrame& frame,
// No output
_callback->Pop(frame.TimeStamp());
}
// Update the key frame decoded variable so that we know whether or not we've decoded a key frame since reset.
_keyFrameDecoded = (_keyFrameDecoded ||
frame.FrameType() == kVideoFrameKey);
return ret;
}
int32_t
VCMGenericDecoder::Release()
{
_keyFrameDecoded = false;
return _decoder.Release();
}
int32_t VCMGenericDecoder::Reset()
{
_keyFrameDecoded = false;
return _decoder.Reset();
}