From 708ec39c21568e0c2aa3d20c681f0e14ee6134ad Mon Sep 17 00:00:00 2001 From: James Dong Date: Wed, 11 Aug 2010 17:29:09 -0700 Subject: Don't send late frames to software encoders for encoding o Document on what frames will be rejected and what frames will be accepted Change-Id: I5a5d489ad3d2b50dbb40a0f6e01529312ce81c54 --- media/libstagefright/codecs/avc/enc/AVCEncoder.cpp | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'media/libstagefright/codecs/avc') diff --git a/media/libstagefright/codecs/avc/enc/AVCEncoder.cpp b/media/libstagefright/codecs/avc/enc/AVCEncoder.cpp index 6e74279..0d89e02 100644 --- a/media/libstagefright/codecs/avc/enc/AVCEncoder.cpp +++ b/media/libstagefright/codecs/avc/enc/AVCEncoder.cpp @@ -407,6 +407,22 @@ status_t AVCEncoder::read( CHECK(mInputBuffer->meta_data()->findInt64(kKeyTime, &timeUs)); outputBuffer->meta_data()->setInt64(kKeyTime, timeUs); + // When the timestamp of the current sample is the same as + // that of the previous sample, the encoding of the sample + // is bypassed, and the output length is set to 0. + if (mNumInputFrames >= 1 && mPrevTimestampUs == timeUs) { + // Frame arrives too late + mInputBuffer->release(); + mInputBuffer = NULL; + outputBuffer->set_range(0, 0); + *out = outputBuffer; + return OK; + } + + // Don't accept out-of-order samples + CHECK(mPrevTimestampUs < timeUs); + mPrevTimestampUs = timeUs; + AVCFrameIO videoInput; memset(&videoInput, 0, sizeof(videoInput)); videoInput.height = ((mVideoHeight + 15) >> 4) << 4; -- cgit v1.1