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img2: update first file only when -updatefirst is specified

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2011-11-27 16:17:10 +01:00
parent b7c7eae7d9
commit e99c4bbdf3
1 changed files with 20 additions and 5 deletions
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25
libavformat/img2.c
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@ -43,6 +43,7 @@ typedef struct {
char *video_size; /**< Set by a private option. */
char *framerate; /**< Set by a private option. */
int loop;
int updatefirst;
} VideoData;
typedef struct {
@ -391,10 +392,11 @@ static int write_packet(AVFormatContext *s, AVPacket *pkt)
if (!img->is_pipe) {
if (av_get_frame_filename(filename, sizeof(filename),
img->path, img->img_number) < 0 && img->img_number==2) {
av_log(s, AV_LOG_WARNING,
"Writing multiple frames to the same file, check the pattern '%s' if this is not what you want\n",
img->path);
img->path, img->img_number) < 0 && img->img_number>1 && !img->updatefirst) {
av_log(s, AV_LOG_ERROR,
"Could not get frame filename number %d from pattern '%s'\n",
img->img_number, img->path);
return AVERROR(EINVAL);
}
for(i=0; i<3; i++){
if (avio_open2(&pb[i], filename, AVIO_FLAG_WRITE,
@ -461,6 +463,7 @@ static int write_packet(AVFormatContext *s, AVPacket *pkt)
#define OFFSET(x) offsetof(VideoData, x)
#define DEC AV_OPT_FLAG_DECODING_PARAM
#define ENC AV_OPT_FLAG_ENCODING_PARAM
static const AVOption options[] = {
{ "pixel_format", "", OFFSET(pixel_format), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
{ "video_size", "", OFFSET(video_size), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
@ -469,6 +472,11 @@ static const AVOption options[] = {
{ NULL },
};
static const AVOption muxoptions[] = {
{ "updatefirst", "", OFFSET(updatefirst), AV_OPT_TYPE_INT, {.dbl = 0}, 0, 1, ENC },
{ NULL },
};
/* input */
#if CONFIG_IMAGE2_DEMUXER
static const AVClass img2_class = {
@ -507,6 +515,12 @@ AVInputFormat ff_image2pipe_demuxer = {
/* output */
#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"),
@ -516,7 +530,8 @@ 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