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faxcompr: Check malloc results and unify return path

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This commit is contained in:
Alex Converse 2012-04-12 18:10:57 -07:00
parent 6555acad10
commit 99a335299f
1 changed files with 10 additions and 5 deletions
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15
libavcodec/faxcompr.c
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@ -275,12 +275,17 @@ int ff_ccitt_unpack(AVCodecContext *avctx,
{
int j;
GetBitContext gb;
int *runs, *ref, *runend;
int *runs, *ref = NULL, *runend;
int ret;
int runsize= avctx->width + 2;
int err = 0;
runs = av_malloc(runsize * sizeof(runs[0]));
ref = av_malloc(runsize * sizeof(ref[0]));
if (!runs || ! ref) {
err = AVERROR(ENOMEM);
goto fail;
}
ref[0] = avctx->width;
ref[1] = 0;
ref[2] = 0;
@ -290,9 +295,8 @@ int ff_ccitt_unpack(AVCodecContext *avctx,
if(compr == TIFF_G4){
ret = decode_group3_2d_line(avctx, &gb, avctx->width, runs, runend, ref);
if(ret < 0){
av_free(runs);
av_free(ref);
return -1;
err = -1;
goto fail;
}
}else{
int g3d1 = (compr == TIFF_G3) && !(opts & 1);
@ -313,7 +317,8 @@ int ff_ccitt_unpack(AVCodecContext *avctx,
}
dst += stride;
}
fail:
av_free(runs);
av_free(ref);
return 0;
return err;
}