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mjpegdec: properly report unsupported disabled features

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When JPEG-LS support is disabled the decoder would feed the
data to the JPEG Lossless decode_*_scan function resulting in
faulty decoding.

CC: libav-stable@libav.org
This commit is contained in:
Luca Barbato 2013-05-14 15:27:26 +02:00
parent 3062ac4c47
commit b25e49b187
1 changed files with 6 additions and 0 deletions
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6
libavcodec/mjpegdec.c
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@ -1485,6 +1485,12 @@ int ff_mjpeg_decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
else if (start_code == COM) else if (start_code == COM)
mjpeg_decode_com(s); mjpeg_decode_com(s);
if (!CONFIG_JPEGLS_DECODER &&
(start_code == SOF48 || start_code == LSE)) {
av_log(avctx, AV_LOG_ERROR, "JPEG-LS support not enabled.\n");
return AVERROR(ENOSYS);
}
switch (start_code) { switch (start_code) {
case SOI: case SOI:
s->restart_interval = 0; s->restart_interval = 0;