Merge "MediaCodecLinearBlock: Let input slot available for onWorkDone buffer."...

    std::shared_ptr<C2Buffer> toC2Buffer(size_t offset, size_t size) const {

        if (mBuffer) {

            // TODO: if returned C2Buffer is different from mBuffer, we should

            // find a way to connect the life cycle between this C2Buffer and

            // mBuffer.

            if (mBuffer->data().type() != C2BufferData::LINEAR) {

                return nullptr;

            }

            C2ConstLinearBlock block = mBuffer->data().linearBlocks().front();

            if (offset == 0 && size == block.capacity()) {

                return mBuffer;

                // Let C2Buffer be new one to queue to MediaCodec. It will allow

                // the related input slot to be released by onWorkDone from C2

                // Component. Currently, the life cycle of mBuffer should be

                // protected by different flows.

                return std::make_shared<C2Buffer>(*mBuffer);

            }

            std::shared_ptr<C2Buffer> buffer =