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mpeg2: fix memory leak of empty packets.

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Fix memory leakage of empty packets, i.e. packets that only contain
the start code prefix. In particular, free empty user-data packets.

Besides, the codec parser will already fail gracefully if the packet
to parse does not have the minimum required size. So, we can also
completely drop the block of code that used to handle packets of size 4
(including the start code).
This commit is contained in:
Gwenole Beauchesne 2012-10-09 15:40:49 +02:00
parent 8f7d19f010
commit 91da4fcb18
1 changed files with 1 additions and 12 deletions
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13
gst-libs/gst/vaapi/gstvaapidecoder_mpeg2.c
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@ -971,7 +971,7 @@ decode_buffer(GstVaapiDecoderMpeg2 *decoder, GstBuffer *buffer)
}
status = GST_VAAPI_DECODER_STATUS_ERROR_NO_DATA;
if (size < 8)
if (size < 4)
break;
ofs = scan_for_start_code(priv->adapter, 0, size, &start_code);
if (ofs < 0)
@ -992,17 +992,6 @@ decode_buffer(GstVaapiDecoderMpeg2 *decoder, GstBuffer *buffer)
buffer = gst_adapter_take_buffer(priv->adapter, ofs);
size -= ofs;
if (ofs == 4) {
// Ignore empty user-data packets
if ((start_code & 0xff) == GST_MPEG_VIDEO_PACKET_USER_DATA) {
status = GST_VAAPI_DECODER_STATUS_SUCCESS;
continue;
}
GST_ERROR("failed to get a valid packet (SC: 0x%08x)", start_code);
status = GST_VAAPI_DECODER_STATUS_ERROR_BITSTREAM_PARSER;
break;
}
buf = GST_BUFFER_DATA(buffer);
buf_size = GST_BUFFER_SIZE(buffer);