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Check that palctrl is available on init instead of crashing when trying to use

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it on decode.
Fixes mpeg2/smclockmpeg2.avi.2.1 from issue 1240.

Originally committed as revision 19347 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Reimar Döffinger 2009-07-05 12:14:05 +00:00
parent e30004fa73
commit 5be5daf1e5
1 changed files with 4 additions and 0 deletions
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4
libavcodec/qpeg.c
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@ -289,6 +289,10 @@ static int decode_frame(AVCodecContext *avctx,
static av_cold int decode_init(AVCodecContext *avctx){
QpegContext * const a = avctx->priv_data;
if (!avctx->palctrl) {
av_log(avctx, AV_LOG_FATAL, "Missing required palette via palctrl\n");
return -1;
}
a->avctx = avctx;
avctx->pix_fmt= PIX_FMT_PAL8;
a->refdata = av_malloc(avctx->width * avctx->height);