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Commit e7635933 authored by Andreas Huber's avatar Andreas Huber
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Depending on our preference to write 2-byte or 4-byte NALs, patch the codec... 

Depending on our preference to write 2-byte or 4-byte NALs, patch the codec specific data 'avcC' accordingly.

Change-Id: I1423923fafbcac6911218277e2bbfa068e49dcc6
parent e87ebb08

media/libstagefright/MPEG4Writer.cpp

+9 −1
Original line number Diff line number Diff line
@@ -2111,7 +2111,15 @@ void MPEG4Writer::Track::writeTrackHeader( 
                      mOwner->endBox();  // d263

                  } else if (!strcasecmp(MEDIA_MIMETYPE_VIDEO_AVC, mime)) {

                      CHECK(mCodecSpecificData);

                      CHECK(mCodecSpecificDataSize > 0);

                      CHECK(mCodecSpecificDataSize >= 5);



                      // Patch avcc's lengthSize field to match the number

                      // of bytes we use to indicate the size of a nal unit.

                      uint8_t *ptr = (uint8_t *)mCodecSpecificData;

                      ptr[4] =

                          (ptr[4] & 0xfc)

                            | (mOwner->useNalLengthFour() ? 3 : 1);



                      mOwner->beginBox("avcC");

                        mOwner->write(mCodecSpecificData, mCodecSpecificDataSize);

                      mOwner->endBox();  // avcC