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image2: Add "start_number" private option to the muxer 

This adds the capability to start counting file number from an arbitrary
integer.

This includes a few lines of trivial code from FFmpeg codebase.

Signed-off-by: Anton Khirnov <anton@khirnov.net>
This commit is contained in:
Mashiat Sarker Shakkhar 2012-06-23 09:53:43 +06:00 committed by Anton Khirnov
parent fd269d6253
commit b5bce20cc3
1 changed files with 18 additions and 2 deletions
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20
libavformat/img2enc.c
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@ -26,8 +26,10 @@
#include "avformat.h"
#include "avio_internal.h"
#include "internal.h"
#include "libavutil/opt.h"
typedef struct {
const AVClass *class; /**< Class for private options. */
int img_number;
int is_pipe;
char path[1024];
@ -37,7 +39,6 @@ static int write_header(AVFormatContext *s)
{
VideoMuxData *img = s->priv_data;
img->img_number = 1;
av_strlcpy(img->path, s->filename, sizeof(img->path));
/* find format */
@ -124,7 +125,21 @@ static int write_packet(AVFormatContext *s, AVPacket *pkt)
return 0;
}
#define OFFSET(x) offsetof(VideoMuxData, x)
#define ENC AV_OPT_FLAG_ENCODING_PARAM
static const AVOption muxoptions[] = {
{ "start_number", "first number in the sequence", OFFSET(img_number), AV_OPT_TYPE_INT, {.dbl = 1}, 1, INT_MAX, ENC },
{ NULL },
};
#if CONFIG_IMAGE2_MUXER
static const AVClass img2mux_class = {
.class_name = "image2 muxer",
.item_name = av_default_item_name,
.option = muxoptions,
.version = LIBAVUTIL_VERSION_INT,
};
AVOutputFormat ff_image2_muxer = {
.name = "image2",
.long_name = NULL_IF_CONFIG_SMALL("image2 sequence"),
@ -135,7 +150,8 @@ AVOutputFormat ff_image2_muxer = {
.video_codec = CODEC_ID_MJPEG,
.write_header = write_header,
.write_packet = write_packet,
.flags = AVFMT_NOTIMESTAMPS | AVFMT_NODIMENSIONS | AVFMT_NOFILE
.flags = AVFMT_NOTIMESTAMPS | AVFMT_NODIMENSIONS | AVFMT_NOFILE,
.priv_class = &img2mux_class,
};
#endif
#if CONFIG_IMAGE2PIPE_MUXER