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avcodec/qdrw: cleanup skip code

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Skip 512 byte sectors until a non zero resolution is found

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2015-05-13 21:12:28 +02:00
parent b6e8166a48
commit 4b28907e4a
1 changed files with 3 additions and 7 deletions
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10
libavcodec/qdrw.c
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@ -124,13 +124,9 @@ static int decode_frame(AVCodecContext *avctx,
int w, h, ret;
bytestream2_init(&gbc, avpkt->data, avpkt->size);
if ( avpkt->size >= 552
&& AV_RB32(&avpkt->data[ 10]) != 0x001102FF
&& AV_RB32(&avpkt->data[522]) == 0x001102FF)
bytestream2_skip(&gbc, 512);
/* PICT images start with a 512 bytes empty header */
if (bytestream2_peek_be32(&gbc) == 0)
while ( bytestream2_get_bytes_left(&gbc) >= 552
&& ( !AV_RB16(&avpkt->data[bytestream2_tell(&gbc)+6])
|| !AV_RB16(&avpkt->data[bytestream2_tell(&gbc)+8])))
bytestream2_skip(&gbc, 512);
/* smallest PICT header */