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avformat/img2dec: avoid seekback on probeing 

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2014-07-04 03:42:30 +02:00
parent 726e253b00
commit 6691eee48c
1 changed files with 2 additions and 3 deletions
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5
libavformat/img2dec.c
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@ -29,6 +29,7 @@
#include "libavutil/parseutils.h"
#include "libavutil/intreadwrite.h"
#include "avformat.h"
#include "avio_internal.h"
#include "internal.h"
#include "img2.h"
@ -308,7 +309,6 @@ int ff_img_read_header(AVFormatContext *s1)
uint8_t *probe_buffer = av_realloc(NULL, probe_buffer_size + AVPROBE_PADDING_SIZE);
AVInputFormat *fmt = NULL;
AVProbeData pd;
int ret;
if (!probe_buffer)
return AVERROR(ENOMEM);
@ -319,7 +319,6 @@ int ff_img_read_header(AVFormatContext *s1)
return probe_buffer_size;
}
memset(probe_buffer + probe_buffer_size, 0, AVPROBE_PADDING_SIZE);
avio_seek(s1->pb, -8, SEEK_CUR);
pd.buf = probe_buffer;
pd.buf_size = 8;
@ -336,7 +335,7 @@ int ff_img_read_header(AVFormatContext *s1)
break;
}
}
av_free(probe_buffer);
ffio_rewind_with_probe_data(s1->pb, &probe_buffer, probe_buffer_size);
}
if (st->codec->codec_id == AV_CODEC_ID_NONE)
st->codec->codec_id = ff_guess_image2_codec(s->path);