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flacparse: perform additional frame checks when resyncing

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Mark Nauwelaerts 2009-12-21 18:29:43 +01:00 committed by Tim-Philipp Müller
parent 84e0aae90c
commit 9bcd66cb98
1 changed files with 23 additions and 0 deletions
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23
gst/audioparsers/gstflacparse.c
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@ -671,6 +671,29 @@ gst_flac_parse_check_valid_frame (GstBaseParse * parse, GstBuffer * buffer,
GST_DEBUG_OBJECT (flacparse, "Found sync code");
ret = gst_flac_parse_get_frame_size (flacparse, buffer, framesize);
if (ret == 0) {
ret = *framesize;
/* if not in sync, also check for next frame header */
if (!gst_base_parse_get_sync (parse) &&
!gst_base_parse_get_drain (parse)) {
GST_DEBUG_OBJECT (flacparse, "Resyncing; checking next sync code");
if (GST_BUFFER_SIZE (buffer) >= ret + 2) {
if (data[ret] == 0xff && (data[ret + 1] >> 2) == 0x3e) {
GST_DEBUG_OBJECT (flacparse, "Found next sync code");
return TRUE;
} else {
GST_DEBUG_OBJECT (flacparse,
"No next sync code, rejecting frame");
return FALSE;
}
} else {
/* request more data for next sync */
GST_DEBUG_OBJECT (flacparse, "... but not enough data");
ret += 2;
gst_base_parse_set_min_frame_size (GST_BASE_PARSE (flacparse), ret);
flacparse->requested_frame_size = ret;
return FALSE;
}
}
return TRUE;
} else if (ret == -1) {
return FALSE;