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image2: Add "start_number" private option to the demuxer

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Currently if a pattern is given we look for up to the fifth file name in
the sequence. This option sets that limit to an arbitrary number.

Signed-off-by: Anton Khirnov <anton@khirnov.net>
This commit is contained in:
Mashiat Sarker Shakkhar 2012-06-23 09:57:04 +06:00 committed by Anton Khirnov
parent b5bce20cc3
commit f57d2f587b
1 changed files with 6 additions and 3 deletions
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9
libavformat/img2dec.c
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@ -40,6 +40,7 @@ typedef struct {
char *video_size; /**< Set by a private option. */
char *framerate; /**< Set by a private option. */
int loop;
int start_number;
} VideoDemuxData;
static const int sizes[][2] = {
@ -70,13 +71,13 @@ static int infer_size(int *width_ptr, int *height_ptr, int size)
/* return -1 if no image found */
static int find_image_range(int *pfirst_index, int *plast_index,
const char *path)
const char *path, int max_start)
{
char buf[1024];
int range, last_index, range1, first_index;
/* find the first image */
for(first_index = 0; first_index < 5; first_index++) {
for (first_index = 0; first_index < max_start; first_index++) {
if (av_get_frame_filename(buf, sizeof(buf), path, first_index) < 0){
*pfirst_index =
*plast_index = 1;
@ -182,7 +183,8 @@ static int read_header(AVFormatContext *s1)
}
if (!s->is_pipe) {
if (find_image_range(&first_index, &last_index, s->path) < 0)
if (find_image_range(&first_index, &last_index, s->path,
FFMAX(s->start_number, 5)) < 0)
return AVERROR(ENOENT);
s->img_first = first_index;
s->img_last = last_index;
@ -283,6 +285,7 @@ static const AVOption options[] = {
{ "video_size", "", OFFSET(video_size), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
{ "framerate", "", OFFSET(framerate), AV_OPT_TYPE_STRING, {.str = "25"}, 0, 0, DEC },
{ "loop", "", OFFSET(loop), AV_OPT_TYPE_INT, {.dbl = 0}, 0, 1, DEC },
{ "start_number", "first number in the sequence", OFFSET(start_number), AV_OPT_TYPE_INT, {.dbl = 1}, 1, INT_MAX, DEC },
{ NULL },
};