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tiffdec: Add a malloc check and refactor another.

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This commit is contained in:
Alex Converse 2012-04-12 18:22:07 -07:00
parent 99a335299f
commit 90a4306007
1 changed files with 10 additions and 5 deletions
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15
libavcodec/tiff.c
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@ -106,13 +106,18 @@ static int tiff_unpack_strip(TiffContext *s, uint8_t* dst, int stride, const uin
int c, line, pixels, code;
const uint8_t *ssrc = src;
int width = ((s->width * s->bpp) + 7) >> 3;
#if CONFIG_ZLIB
uint8_t *zbuf; unsigned long outlen;
if (size <= 0)
return AVERROR_INVALIDDATA;
#if CONFIG_ZLIB
if(s->compr == TIFF_DEFLATE || s->compr == TIFF_ADOBE_DEFLATE){
uint8_t *zbuf; unsigned long outlen;
int ret;
outlen = width * lines;
zbuf = av_malloc(outlen);
if (!zbuf)
return AVERROR(ENOMEM);
ret = tiff_uncompress(zbuf, &outlen, src, size);
if(ret != Z_OK){
av_log(s->avctx, AV_LOG_ERROR, "Uncompressing failed (%lu of %lu) with error %d\n", outlen, (unsigned long)width * lines, ret);
@ -137,11 +142,11 @@ static int tiff_unpack_strip(TiffContext *s, uint8_t* dst, int stride, const uin
}
if(s->compr == TIFF_CCITT_RLE || s->compr == TIFF_G3 || s->compr == TIFF_G4){
int i, ret = 0;
uint8_t *src2 = av_malloc(size + FF_INPUT_BUFFER_PADDING_SIZE);
uint8_t *src2 = av_malloc((unsigned)size + FF_INPUT_BUFFER_PADDING_SIZE);
if(!src2 || (unsigned)size + FF_INPUT_BUFFER_PADDING_SIZE < (unsigned)size){
if (!src2) {
av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
return -1;
return AVERROR(ENOMEM);
}
if(s->fax_opts & 2){
av_log(s->avctx, AV_LOG_ERROR, "Uncompressed fax mode is not supported (yet)\n");