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tiff: support zlib with invertedFillOrder 

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Piotr Bandurski 2012-12-08 22:36:57 +01:00 committed by Michael Niedermayer
parent f494647206
commit 7f01247572
1 changed files with 16 additions and 2 deletions
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18
libavcodec/tiff.c
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@ -405,18 +405,31 @@ static int tiff_unpack_strip(TiffContext *s, uint8_t *dst, int stride,
#if CONFIG_ZLIB
if (s->compr == TIFF_DEFLATE || s->compr == TIFF_ADOBE_DEFLATE) {
uint8_t *zbuf;
uint8_t *src2 = NULL, *zbuf;
unsigned long outlen;
int ret;
int i, ret;
outlen = width * lines;
zbuf = av_malloc(outlen);
if (!zbuf)
return AVERROR(ENOMEM);
if (s->fill_order) {
src2 = av_malloc((unsigned)size + FF_INPUT_BUFFER_PADDING_SIZE);
if (!src2) {
av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
av_free(zbuf);
return AVERROR(ENOMEM);
}
for (i = 0; i < size; i++)
src2[i] = ff_reverse[src[i]];
memset(src2 + size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
src = src2;
}
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);
av_free(src2);
av_free(zbuf);
return -1;
}
@ -430,6 +443,7 @@ static int tiff_unpack_strip(TiffContext *s, uint8_t *dst, int stride,
dst += stride;
src += width;
}
av_free(src2);
av_free(zbuf);
return 0;
}