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avformat/img2dec: Skip checking the input files existence if it has already been opened 

Avoids a unneeded open
Fixes part of Ticket4849

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2015-12-26 18:57:09 +01:00
parent f16e4a0857
commit e9e8782202
1 changed files with 3 additions and 3 deletions
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6
libavformat/img2dec.c
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@ -103,7 +103,7 @@ static int is_glob(const char *path)
* @param start_index minimum accepted value for the first index in the range
* @return -1 if no image file could be found
*/
static int find_image_range(int *pfirst_index, int *plast_index,
static int find_image_range(AVIOContext *pb, int *pfirst_index, int *plast_index,
const char *path, int start_index, int start_index_range)
{
char buf[1024];
@ -114,7 +114,7 @@ static int find_image_range(int *pfirst_index, int *plast_index,
if (av_get_frame_filename(buf, sizeof(buf), path, first_index) < 0) {
*pfirst_index =
*plast_index = 1;
if (avio_check(buf, AVIO_FLAG_READ) > 0)
if (pb || avio_check(buf, AVIO_FLAG_READ) > 0)
return 0;
return -1;
}
@ -260,7 +260,7 @@ int ff_img_read_header(AVFormatContext *s1)
}
}
if ((s->pattern_type == PT_GLOB_SEQUENCE && !s->use_glob) || s->pattern_type == PT_SEQUENCE) {
if (find_image_range(&first_index, &last_index, s->path,
if (find_image_range(s1->pb, &first_index, &last_index, s->path,
s->start_number, s->start_number_range) < 0) {
av_log(s1, AV_LOG_ERROR,
"Could find no file with path '%s' and index in the range %d-%d\n",