Merge "Fix aac decoder flush"

        // depend on fragments from the last one decoded.

        // drain all existing data

        drainDecoder();

        // force decoder loop to drop the first decoded buffer by resetting these state variables,

        // but only if initialization has already happened.

        if (mInputBufferCount != 0) {

            mInputBufferCount = 1;

            mStreamInfo->sampleRate = 0;

        }

    }

}