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Commit c96fbcb3 authored by Gopalakrishnan Nallasamy's avatar Gopalakrishnan Nallasamy Committed by Automerger Merge Worker
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MPEG4Writer:Optimize number of write(2) calls am: 1b0be545 

Change-Id: Icc60e5a0dd07b4d843b087929157b63c891057b7
parents 1a19b124 1b0be545

media/libstagefright/MPEG4Writer.cpp

+10 −14
Original line number Diff line number Diff line
@@ -1506,25 +1506,21 @@ void MPEG4Writer::addMultipleLengthPrefixedSamples_l(MediaBuffer *buffer) { 
void MPEG4Writer::addLengthPrefixedSample_l(MediaBuffer *buffer) {

    size_t length = buffer->range_length();

    if (mUse4ByteNalLength) {

        uint8_t x = length >> 24;

        writeOrPostError(mFd, &x, 1);

        x = (length >> 16) & 0xff;

        writeOrPostError(mFd, &x, 1);

        x = (length >> 8) & 0xff;

        writeOrPostError(mFd, &x, 1);

        x = length & 0xff;

        writeOrPostError(mFd, &x, 1);



        uint8_t x[4];

        x[0] = length >> 24;

        x[1] = (length >> 16) & 0xff;

        x[2] = (length >> 8) & 0xff;

        x[3] = length & 0xff;

        writeOrPostError(mFd, &x, 4);

        writeOrPostError(mFd, (const uint8_t*)buffer->data() + buffer->range_offset(), length);



        mOffset += length + 4;

    } else {

        CHECK_LT(length, 65536u);



        uint8_t x = length >> 8;

        writeOrPostError(mFd, &x, 1);

        x = length & 0xff;

        writeOrPostError(mFd, &x, 1);

        uint8_t x[2];

        x[0] = length >> 8;

        x[1] = length & 0xff;

        writeOrPostError(mFd, &x, 2);

        writeOrPostError(mFd, (const uint8_t*)buffer->data() + buffer->range_offset(), length);

        mOffset += length + 2;

    }