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Merge commit '0af5a774ebc96ae9018926dc8b276c7f39767e3e' into release/1.1

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* commit '0af5a774ebc96ae9018926dc8b276c7f39767e3e':
  jpegls: check the scan offset
  jpegls: factorize return paths
  jpegls: return meaningful errors
  mpegvideo: allocate sufficiently large scratch buffer for interlaced vid

Conflicts:
	libavcodec/jpeglsdec.c
	libavcodec/mpegvideo.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer
2013-06-03 00:16:52 +02:00
parent 8c118207ea 0af5a774eb
commit cff8d01e15
1 changed files with 14 additions and 9 deletions
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23
libavcodec/jpeglsdec.c
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@@ -70,13 +70,13 @@ int ff_jpegls_decode_lse(MJpegDecodeContext *s)
case 2:
case 3:
av_log(s->avctx, AV_LOG_ERROR, "palette not supported\n");
return -1;
return AVERROR(ENOSYS);
case 4:
av_log(s->avctx, AV_LOG_ERROR, "oversize image not supported\n");
return -1;
return AVERROR(ENOSYS);
default:
av_log(s->avctx, AV_LOG_ERROR, "invalid id %d\n", id);
return -1;
return AVERROR_INVALIDDATA;
}
av_dlog(s->avctx, "ID=%i, T=%i,%i,%i\n", id, s->t1, s->t2, s->t3);
@@ -262,7 +262,7 @@ int ff_jpegls_decode_picture(MJpegDecodeContext *s, int near, int point_transfor
int i, t = 0;
uint8_t *zero, *last, *cur;
JLSState *state;
int off = 0, stride = 1, width, shift;
int off = 0, stride = 1, width, shift, ret = 0;
zero = av_mallocz(s->picture.linesize[0]);
last = zero;
@@ -294,6 +294,10 @@ int ff_jpegls_decode_picture(MJpegDecodeContext *s, int near, int point_transfor
ilv, point_transform, s->bits, s->cur_scan);
}
if(ilv == 0) { /* separate planes */
if (s->cur_scan > s->nb_components) {
ret = AVERROR_INVALIDDATA;
goto end;
}
stride = (s->nb_components > 1) ? 3 : 1;
off = av_clip(s->cur_scan - 1, 0, stride - 1);
width = s->width * stride;
@@ -333,11 +337,10 @@ int ff_jpegls_decode_picture(MJpegDecodeContext *s, int near, int point_transfor
last = cur;
cur += s->picture.linesize[0];
}
} else if(ilv == 2) { /* sample interleaving */
} else if (ilv == 2) { /* sample interleaving */
av_log(s->avctx, AV_LOG_ERROR, "Sample interleaved images are not supported.\n");
av_free(state);
av_free(zero);
return -1;
ret = AVERROR_PATCHWELCOME;
goto end;
}
if(shift){ /* we need to do point transform or normalize samples */
@@ -365,10 +368,12 @@ int ff_jpegls_decode_picture(MJpegDecodeContext *s, int near, int point_transfor
}
}
}
end:
av_free(state);
av_free(zero);
return 0;
return ret;
}