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tiff: Return more meaningful error codes 

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Himangi Saraogi 2015-03-30 22:24:06 +05:30 committed by Michael Niedermayer
parent ac9919b966
commit 0187c2ccda
1 changed files with 8 additions and 5 deletions
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13
libavcodec/tiffenc.c
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@ -164,7 +164,8 @@ static int add_entry1(TiffEncoderContext *s,
* @param dst output buffer
* @param n size of input buffer
* @param compr compression method
* @return number of output bytes. If an output error is encountered, -1 is returned
* @return number of output bytes. If an output error is encountered, a negative
* value corresponding to an AVERROR error code is returned.
*/
static int encode_strip(TiffEncoderContext *s, const int8_t *src,
uint8_t *dst, int n, int compr)
@ -177,14 +178,14 @@ static int encode_strip(TiffEncoderContext *s, const int8_t *src,
unsigned long zlen = s->buf_size - (*s->buf - s->buf_start);
if (compress(dst, &zlen, src, n) != Z_OK) {
av_log(s->avctx, AV_LOG_ERROR, "Compressing failed\n");
return -1;
return AVERROR_EXTERNAL;
}
return zlen;
}
#endif
case TIFF_RAW:
if (check_size(s, n))
return -1;
return AVERROR(EINVAL);
memcpy(dst, src, n);
return n;
case TIFF_PACKBITS:
@ -193,7 +194,9 @@ static int encode_strip(TiffEncoderContext *s, const int8_t *src,
case TIFF_LZW:
return ff_lzw_encode(s->lzws, src, n);
default:
return -1;
av_log(s->avctx, AV_LOG_ERROR, "Unsupported compression method: %d\n",
compr);
return AVERROR(EINVAL);
}
}
@ -304,7 +307,7 @@ static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
default:
av_log(s->avctx, AV_LOG_ERROR,
"This colors format is not supported\n");
return -1;
return AVERROR(EINVAL);
}
for (i = 0; i < s->bpp_tab_size; i++)