am 96aed4fb: Merge "avcenc: Prepend startcodes to output buffers"

* commit '96aed4fb18e5303b039cc7e5dc252e0827491d09':
  avcenc: Prepend startcodes to output buffers
diff --git a/media/libstagefright/codecs/avc/enc/SoftAVCEncoder.cpp b/media/libstagefright/codecs/avc/enc/SoftAVCEncoder.cpp
index 1d66120..4a21a3e 100644
--- a/media/libstagefright/codecs/avc/enc/SoftAVCEncoder.cpp
+++ b/media/libstagefright/codecs/avc/enc/SoftAVCEncoder.cpp
@@ -871,7 +871,13 @@
         CHECK(encoderStatus == AVCENC_SUCCESS || encoderStatus == AVCENC_NEW_IDR);
         dataLength = outHeader->nAllocLen;  // Reset the output buffer length
         if (inHeader->nFilledLen > 0) {
+            if (outHeader->nAllocLen >= 4) {
+                memcpy(outPtr, "\x00\x00\x00\x01", 4);
+                outPtr += 4;
+                dataLength -= 4;
+            }
             encoderStatus = PVAVCEncodeNAL(mHandle, outPtr, &dataLength, &type);
+            dataLength = outPtr + dataLength - outHeader->pBuffer;
             if (encoderStatus == AVCENC_SUCCESS) {
                 CHECK(NULL == PVAVCEncGetOverrunBuffer(mHandle));
             } else if (encoderStatus == AVCENC_PICTURE_READY) {