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img2: K&R formatting cosmetics 

Also introduce local img_ namespace to simplify debugging.
This commit is contained in:
Diego Biurrun 2012-11-29 04:56:40 +01:00
parent c1fcf563b1
commit cc7d5cfeec
3 changed files with 131 additions and 120 deletions
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81
libavformat/img2.c
View File

@ -29,50 +29,51 @@ typedef struct {
} IdStrMap; } IdStrMap;
static const IdStrMap img_tags[] = { static const IdStrMap img_tags[] = {
{ AV_CODEC_ID_MJPEG , "jpeg"}, { AV_CODEC_ID_MJPEG, "jpeg" },
{ AV_CODEC_ID_MJPEG , "jpg"}, { AV_CODEC_ID_MJPEG, "jpg" },
{ AV_CODEC_ID_LJPEG , "ljpg"}, { AV_CODEC_ID_LJPEG, "ljpg" },
{ AV_CODEC_ID_PNG , "png"}, { AV_CODEC_ID_PNG, "png" },
{ AV_CODEC_ID_PNG , "mng"}, { AV_CODEC_ID_PNG, "mng" },
{ AV_CODEC_ID_PPM , "ppm"}, { AV_CODEC_ID_PPM, "ppm" },
{ AV_CODEC_ID_PPM , "pnm"}, { AV_CODEC_ID_PPM, "pnm" },
{ AV_CODEC_ID_PGM , "pgm"}, { AV_CODEC_ID_PGM, "pgm" },
{ AV_CODEC_ID_PGMYUV , "pgmyuv"}, { AV_CODEC_ID_PGMYUV, "pgmyuv" },
{ AV_CODEC_ID_PBM , "pbm"}, { AV_CODEC_ID_PBM, "pbm" },
{ AV_CODEC_ID_PAM , "pam"}, { AV_CODEC_ID_PAM, "pam" },
{ AV_CODEC_ID_MPEG1VIDEO, "mpg1-img"}, { AV_CODEC_ID_MPEG1VIDEO, "mpg1-img" },
{ AV_CODEC_ID_MPEG2VIDEO, "mpg2-img"}, { AV_CODEC_ID_MPEG2VIDEO, "mpg2-img" },
{ AV_CODEC_ID_MPEG4 , "mpg4-img"}, { AV_CODEC_ID_MPEG4, "mpg4-img" },
{ AV_CODEC_ID_FFV1 , "ffv1-img"}, { AV_CODEC_ID_FFV1, "ffv1-img" },
{ AV_CODEC_ID_RAWVIDEO , "y"}, { AV_CODEC_ID_RAWVIDEO, "y" },
{ AV_CODEC_ID_BMP , "bmp"}, { AV_CODEC_ID_BMP, "bmp" },
{ AV_CODEC_ID_GIF , "gif"}, { AV_CODEC_ID_GIF, "gif" },
{ AV_CODEC_ID_TARGA , "tga"}, { AV_CODEC_ID_TARGA, "tga" },
{ AV_CODEC_ID_TIFF , "tiff"}, { AV_CODEC_ID_TIFF, "tiff" },
{ AV_CODEC_ID_TIFF , "tif"}, { AV_CODEC_ID_TIFF, "tif" },
{ AV_CODEC_ID_SGI , "sgi"}, { AV_CODEC_ID_SGI, "sgi" },
{ AV_CODEC_ID_PTX , "ptx"}, { AV_CODEC_ID_PTX, "ptx" },
{ AV_CODEC_ID_PCX , "pcx"}, { AV_CODEC_ID_PCX, "pcx" },
{ AV_CODEC_ID_SUNRAST , "sun"}, { AV_CODEC_ID_SUNRAST, "sun" },
{ AV_CODEC_ID_SUNRAST , "ras"}, { AV_CODEC_ID_SUNRAST, "ras" },
{ AV_CODEC_ID_SUNRAST , "rs"}, { AV_CODEC_ID_SUNRAST, "rs" },
{ AV_CODEC_ID_SUNRAST , "im1"}, { AV_CODEC_ID_SUNRAST, "im1" },
{ AV_CODEC_ID_SUNRAST , "im8"}, { AV_CODEC_ID_SUNRAST, "im8" },
{ AV_CODEC_ID_SUNRAST , "im24"}, { AV_CODEC_ID_SUNRAST, "im24" },
{ AV_CODEC_ID_SUNRAST , "sunras"}, { AV_CODEC_ID_SUNRAST, "sunras" },
{ AV_CODEC_ID_JPEG2000 , "jp2"}, { AV_CODEC_ID_JPEG2000, "jp2" },
{ AV_CODEC_ID_JPEG2000 , "jpc"}, { AV_CODEC_ID_JPEG2000, "jpc" },
{ AV_CODEC_ID_DPX , "dpx"}, { AV_CODEC_ID_DPX, "dpx" },
{ AV_CODEC_ID_PICTOR , "pic"}, { AV_CODEC_ID_PICTOR, "pic" },
{ AV_CODEC_ID_XBM , "xbm"}, { AV_CODEC_ID_XBM, "xbm" },
{ AV_CODEC_ID_XWD , "xwd"}, { AV_CODEC_ID_XWD, "xwd" },
{ AV_CODEC_ID_NONE , NULL} { AV_CODEC_ID_NONE, NULL }
}; };
static enum AVCodecID av_str2id(const IdStrMap *tags, const char *str) static enum AVCodecID av_str2id(const IdStrMap *tags, const char *str)
{ {
str= strrchr(str, '.'); str = strrchr(str, '.');
if(!str) return AV_CODEC_ID_NONE; if (!str)
return AV_CODEC_ID_NONE;
str++; str++;
while (tags->id) { while (tags->id) {

129
libavformat/img2dec.c
View File

@ -59,13 +59,14 @@ static int infer_size(int *width_ptr, int *height_ptr, int size)
{ {
int i; int i;
for(i=0;i<FF_ARRAY_ELEMS(sizes);i++) { for (i = 0; i < FF_ARRAY_ELEMS(sizes); i++) {
if ((sizes[i][0] * sizes[i][1]) == size) { if ((sizes[i][0] * sizes[i][1]) == size) {
*width_ptr = sizes[i][0]; *width_ptr = sizes[i][0];
*height_ptr = sizes[i][1]; *height_ptr = sizes[i][1];
return 0; return 0;
} }
} }
return -1; return -1;
} }
@ -78,9 +79,9 @@ static int find_image_range(int *pfirst_index, int *plast_index,
/* find the first image */ /* find the first image */
for (first_index = 0; first_index < max_start; first_index++) { for (first_index = 0; first_index < max_start; first_index++) {
if (av_get_frame_filename(buf, sizeof(buf), path, first_index) < 0){ if (av_get_frame_filename(buf, sizeof(buf), path, first_index) < 0) {
*pfirst_index = *pfirst_index =
*plast_index = 1; *plast_index = 1;
if (avio_check(buf, AVIO_FLAG_READ) > 0) if (avio_check(buf, AVIO_FLAG_READ) > 0)
return 0; return 0;
return -1; return -1;
@ -93,9 +94,9 @@ static int find_image_range(int *pfirst_index, int *plast_index,
/* find the last image */ /* find the last image */
last_index = first_index; last_index = first_index;
for(;;) { for (;;) {
range = 0; range = 0;
for(;;) { for (;;) {
if (!range) if (!range)
range1 = 1; range1 = 1;
else else
@ -116,25 +117,25 @@ static int find_image_range(int *pfirst_index, int *plast_index,
last_index += range; last_index += range;
} }
*pfirst_index = first_index; *pfirst_index = first_index;
*plast_index = last_index; *plast_index = last_index;
return 0; return 0;
fail:
fail:
return -1; return -1;
} }
static int img_read_probe(AVProbeData *p)
static int read_probe(AVProbeData *p)
{ {
if (p->filename && ff_guess_image2_codec(p->filename)) { if (p->filename && ff_guess_image2_codec(p->filename)) {
if (av_filename_number_test(p->filename)) if (av_filename_number_test(p->filename))
return AVPROBE_SCORE_MAX; return AVPROBE_SCORE_MAX;
else else
return AVPROBE_SCORE_MAX/2; return AVPROBE_SCORE_MAX / 2;
} }
return 0; return 0;
} }
static int read_header(AVFormatContext *s1) static int img_read_header(AVFormatContext *s1)
{ {
VideoDemuxData *s = s1->priv_data; VideoDemuxData *s = s1->priv_data;
int first_index, last_index, ret = 0; int first_index, last_index, ret = 0;
@ -150,28 +151,33 @@ static int read_header(AVFormatContext *s1)
return AVERROR(ENOMEM); return AVERROR(ENOMEM);
} }
if (s->pixel_format && (pix_fmt = av_get_pix_fmt(s->pixel_format)) == AV_PIX_FMT_NONE) { if (s->pixel_format &&
av_log(s1, AV_LOG_ERROR, "No such pixel format: %s.\n", s->pixel_format); (pix_fmt = av_get_pix_fmt(s->pixel_format)) == AV_PIX_FMT_NONE) {
av_log(s1, AV_LOG_ERROR, "No such pixel format: %s.\n",
s->pixel_format);
return AVERROR(EINVAL); return AVERROR(EINVAL);
} }
if (s->video_size && (ret = av_parse_video_size(&width, &height, s->video_size)) < 0) { if (s->video_size &&
av_log(s, AV_LOG_ERROR, "Could not parse video size: %s.\n", s->video_size); (ret = av_parse_video_size(&width, &height, s->video_size)) < 0) {
av_log(s, AV_LOG_ERROR,
"Could not parse video size: %s.\n", s->video_size);
return ret; return ret;
} }
if ((ret = av_parse_video_rate(&framerate, s->framerate)) < 0) { if ((ret = av_parse_video_rate(&framerate, s->framerate)) < 0) {
av_log(s, AV_LOG_ERROR, "Could not parse framerate: %s.\n", s->framerate); av_log(s, AV_LOG_ERROR,
"Could not parse framerate: %s.\n", s->framerate);
return ret; return ret;
} }
av_strlcpy(s->path, s1->filename, sizeof(s->path)); av_strlcpy(s->path, s1->filename, sizeof(s->path));
s->img_number = 0; s->img_number = 0;
s->img_count = 0; s->img_count = 0;
/* find format */ /* find format */
if (s1->iformat->flags & AVFMT_NOFILE) if (s1->iformat->flags & AVFMT_NOFILE)
s->is_pipe = 0; s->is_pipe = 0;
else{ else {
s->is_pipe = 1; s->is_pipe = 1;
st->need_parsing = AVSTREAM_PARSE_FULL; st->need_parsing = AVSTREAM_PARSE_FULL;
} }
@ -186,38 +192,39 @@ static int read_header(AVFormatContext *s1)
if (find_image_range(&first_index, &last_index, s->path, if (find_image_range(&first_index, &last_index, s->path,
FFMAX(s->start_number, 5)) < 0) FFMAX(s->start_number, 5)) < 0)
return AVERROR(ENOENT); return AVERROR(ENOENT);
s->img_first = first_index; s->img_first = first_index;
s->img_last = last_index; s->img_last = last_index;
s->img_number = first_index; s->img_number = first_index;
/* compute duration */ /* compute duration */
st->start_time = 0; st->start_time = 0;
st->duration = last_index - first_index + 1; st->duration = last_index - first_index + 1;
} }
if(s1->video_codec_id){ if (s1->video_codec_id) {
st->codec->codec_type = AVMEDIA_TYPE_VIDEO; st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
st->codec->codec_id = s1->video_codec_id; st->codec->codec_id = s1->video_codec_id;
}else if(s1->audio_codec_id){ } else if (s1->audio_codec_id) {
st->codec->codec_type = AVMEDIA_TYPE_AUDIO; st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
st->codec->codec_id = s1->audio_codec_id; st->codec->codec_id = s1->audio_codec_id;
}else{ } else {
st->codec->codec_type = AVMEDIA_TYPE_VIDEO; st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
st->codec->codec_id = ff_guess_image2_codec(s->path); st->codec->codec_id = ff_guess_image2_codec(s->path);
} }
if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO && pix_fmt != AV_PIX_FMT_NONE) if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
pix_fmt != AV_PIX_FMT_NONE)
st->codec->pix_fmt = pix_fmt; st->codec->pix_fmt = pix_fmt;
return 0; return 0;
} }
static int read_packet(AVFormatContext *s1, AVPacket *pkt) static int img_read_packet(AVFormatContext *s1, AVPacket *pkt)
{ {
VideoDemuxData *s = s1->priv_data; VideoDemuxData *s = s1->priv_data;
char filename[1024]; char filename[1024];
int i; int i;
int size[3]={0}, ret[3]={0}; int size[3] = { 0 }, ret[3] = { 0 };
AVIOContext *f[3] = {NULL}; AVIOContext *f[3] = { NULL };
AVCodecContext *codec= s1->streams[0]->codec; AVCodecContext *codec = s1->streams[0]->codec;
if (!s->is_pipe) { if (!s->is_pipe) {
/* loop over input */ /* loop over input */
@ -227,48 +234,50 @@ static int read_packet(AVFormatContext *s1, AVPacket *pkt)
if (s->img_number > s->img_last) if (s->img_number > s->img_last)
return AVERROR_EOF; return AVERROR_EOF;
if (av_get_frame_filename(filename, sizeof(filename), if (av_get_frame_filename(filename, sizeof(filename),
s->path, s->img_number)<0 && s->img_number > 1) s->path,
s->img_number) < 0 && s->img_number > 1)
return AVERROR(EIO); return AVERROR(EIO);
for(i=0; i<3; i++){ for (i = 0; i < 3; i++) {
if (avio_open2(&f[i], filename, AVIO_FLAG_READ, if (avio_open2(&f[i], filename, AVIO_FLAG_READ,
&s1->interrupt_callback, NULL) < 0) { &s1->interrupt_callback, NULL) < 0) {
if(i>=1) if (i >= 1)
break; break;
av_log(s1, AV_LOG_ERROR, "Could not open file : %s\n",filename); av_log(s1, AV_LOG_ERROR, "Could not open file : %s\n",
filename);
return AVERROR(EIO); return AVERROR(EIO);
} }
size[i]= avio_size(f[i]); size[i] = avio_size(f[i]);
if(codec->codec_id != AV_CODEC_ID_RAWVIDEO) if (codec->codec_id != AV_CODEC_ID_RAWVIDEO)
break; break;
filename[ strlen(filename) - 1 ]= 'U' + i; filename[strlen(filename) - 1] = 'U' + i;
} }
if(codec->codec_id == AV_CODEC_ID_RAWVIDEO && !codec->width) if (codec->codec_id == AV_CODEC_ID_RAWVIDEO && !codec->width)
infer_size(&codec->width, &codec->height, size[0]); infer_size(&codec->width, &codec->height, size[0]);
} else { } else {
f[0] = s1->pb; f[0] = s1->pb;
if (f[0]->eof_reached) if (f[0]->eof_reached)
return AVERROR(EIO); return AVERROR(EIO);
size[0]= 4096; size[0] = 4096;
} }
av_new_packet(pkt, size[0] + size[1] + size[2]); av_new_packet(pkt, size[0] + size[1] + size[2]);
pkt->stream_index = 0; pkt->stream_index = 0;
pkt->flags |= AV_PKT_FLAG_KEY; pkt->flags |= AV_PKT_FLAG_KEY;
pkt->size= 0; pkt->size = 0;
for(i=0; i<3; i++){ for (i = 0; i < 3; i++) {
if(f[i]){ if (f[i]) {
ret[i]= avio_read(f[i], pkt->data + pkt->size, size[i]); ret[i] = avio_read(f[i], pkt->data + pkt->size, size[i]);
if (!s->is_pipe) if (!s->is_pipe)
avio_close(f[i]); avio_close(f[i]);
if(ret[i]>0) if (ret[i] > 0)
pkt->size += ret[i]; pkt->size += ret[i];
} }
} }
if (ret[0] <= 0 || ret[1]<0 || ret[2]<0) { if (ret[0] <= 0 || ret[1] < 0 || ret[2] < 0) {
av_free_packet(pkt); av_free_packet(pkt);
return AVERROR(EIO); /* signal EOF */ return AVERROR(EIO); /* signal EOF */
} else { } else {
@ -281,11 +290,11 @@ static int read_packet(AVFormatContext *s1, AVPacket *pkt)
#define OFFSET(x) offsetof(VideoDemuxData, x) #define OFFSET(x) offsetof(VideoDemuxData, x)
#define DEC AV_OPT_FLAG_DECODING_PARAM #define DEC AV_OPT_FLAG_DECODING_PARAM
static const AVOption options[] = { static const AVOption options[] = {
{ "pixel_format", "", OFFSET(pixel_format), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC }, { "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 }, { "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 }, { "framerate", "", OFFSET(framerate), AV_OPT_TYPE_STRING, { .str = "25" }, 0, 0, DEC },
{ "loop", "", OFFSET(loop), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, DEC }, { "loop", "", OFFSET(loop), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, DEC },
{ "start_number", "first number in the sequence", OFFSET(start_number), AV_OPT_TYPE_INT, {.i64 = 1}, 1, INT_MAX, DEC }, { "start_number", "first number in the sequence", OFFSET(start_number), AV_OPT_TYPE_INT, { .i64 = 1 }, 1, INT_MAX, DEC },
{ NULL }, { NULL },
}; };
@ -300,9 +309,9 @@ AVInputFormat ff_image2_demuxer = {
.name = "image2", .name = "image2",
.long_name = NULL_IF_CONFIG_SMALL("image2 sequence"), .long_name = NULL_IF_CONFIG_SMALL("image2 sequence"),
.priv_data_size = sizeof(VideoDemuxData), .priv_data_size = sizeof(VideoDemuxData),
.read_probe = read_probe, .read_probe = img_read_probe,
.read_header = read_header, .read_header = img_read_header,
.read_packet = read_packet, .read_packet = img_read_packet,
.flags = AVFMT_NOFILE, .flags = AVFMT_NOFILE,
.priv_class = &img2_class, .priv_class = &img2_class,
}; };
@ -318,8 +327,8 @@ AVInputFormat ff_image2pipe_demuxer = {
.name = "image2pipe", .name = "image2pipe",
.long_name = NULL_IF_CONFIG_SMALL("piped image2 sequence"), .long_name = NULL_IF_CONFIG_SMALL("piped image2 sequence"),
.priv_data_size = sizeof(VideoDemuxData), .priv_data_size = sizeof(VideoDemuxData),
.read_header = read_header, .read_header = img_read_header,
.read_packet = read_packet, .read_packet = img_read_packet,
.priv_class = &img2pipe_class, .priv_class = &img2pipe_class,
}; };
#endif #endif

41
libavformat/img2enc.c
View File

@ -55,45 +55,46 @@ static int write_packet(AVFormatContext *s, AVPacket *pkt)
VideoMuxData *img = s->priv_data; VideoMuxData *img = s->priv_data;
AVIOContext *pb[3]; AVIOContext *pb[3];
char filename[1024]; char filename[1024];
AVCodecContext *codec= s->streams[ pkt->stream_index ]->codec; AVCodecContext *codec = s->streams[pkt->stream_index]->codec;
int i; int i;
if (!img->is_pipe) { if (!img->is_pipe) {
if (av_get_frame_filename(filename, sizeof(filename), if (av_get_frame_filename(filename, sizeof(filename),
img->path, img->img_number) < 0 && img->img_number>1) { img->path, img->img_number) < 0 && img->img_number > 1) {
av_log(s, AV_LOG_ERROR, av_log(s, AV_LOG_ERROR,
"Could not get frame filename number %d from pattern '%s'\n", "Could not get frame filename number %d from pattern '%s'\n",
img->img_number, img->path); img->img_number, img->path);
return AVERROR(EIO); return AVERROR(EIO);
} }
for(i=0; i<3; i++){ for (i = 0; i < 3; i++) {
if (avio_open2(&pb[i], filename, AVIO_FLAG_WRITE, if (avio_open2(&pb[i], filename, AVIO_FLAG_WRITE,
&s->interrupt_callback, NULL) < 0) { &s->interrupt_callback, NULL) < 0) {
av_log(s, AV_LOG_ERROR, "Could not open file : %s\n",filename); av_log(s, AV_LOG_ERROR, "Could not open file : %s\n", filename);
return AVERROR(EIO); return AVERROR(EIO);
} }
if(codec->codec_id != AV_CODEC_ID_RAWVIDEO) if (codec->codec_id != AV_CODEC_ID_RAWVIDEO)
break; break;
filename[ strlen(filename) - 1 ]= 'U' + i; filename[strlen(filename) - 1] = 'U' + i;
} }
} else { } else {
pb[0] = s->pb; pb[0] = s->pb;
} }
if(codec->codec_id == AV_CODEC_ID_RAWVIDEO){ if (codec->codec_id == AV_CODEC_ID_RAWVIDEO) {
int ysize = codec->width * codec->height; int ysize = codec->width * codec->height;
avio_write(pb[0], pkt->data , ysize); avio_write(pb[0], pkt->data, ysize);
avio_write(pb[1], pkt->data + ysize, (pkt->size - ysize)/2); avio_write(pb[1], pkt->data + ysize, (pkt->size - ysize) / 2);
avio_write(pb[2], pkt->data + ysize +(pkt->size - ysize)/2, (pkt->size - ysize)/2); avio_write(pb[2], pkt->data + ysize + (pkt->size - ysize) / 2, (pkt->size - ysize) / 2);
avio_close(pb[1]); avio_close(pb[1]);
avio_close(pb[2]); avio_close(pb[2]);
}else{ } else {
if(ff_guess_image2_codec(s->filename) == AV_CODEC_ID_JPEG2000){ if (ff_guess_image2_codec(s->filename) == AV_CODEC_ID_JPEG2000) {
AVStream *st = s->streams[0]; AVStream *st = s->streams[0];
if(st->codec->extradata_size > 8 && if (st->codec->extradata_size > 8 &&
AV_RL32(st->codec->extradata+4) == MKTAG('j','p','2','h')){ AV_RL32(st->codec->extradata + 4) == MKTAG('j', 'p', '2', 'h')) {
if(pkt->size < 8 || AV_RL32(pkt->data+4) != MKTAG('j','p','2','c')) if (pkt->size < 8 ||
AV_RL32(pkt->data + 4) != MKTAG('j', 'p', '2', 'c'))
goto error; goto error;
avio_wb32(pb[0], 12); avio_wb32(pb[0], 12);
ffio_wfourcc(pb[0], "jP "); ffio_wfourcc(pb[0], "jP ");
@ -104,10 +105,10 @@ static int write_packet(AVFormatContext *s, AVPacket *pkt)
avio_wb32(pb[0], 0); avio_wb32(pb[0], 0);
ffio_wfourcc(pb[0], "jp2 "); ffio_wfourcc(pb[0], "jp2 ");
avio_write(pb[0], st->codec->extradata, st->codec->extradata_size); avio_write(pb[0], st->codec->extradata, st->codec->extradata_size);
}else if(pkt->size < 8 || } else if (pkt->size < 8 ||
(!st->codec->extradata_size && (!st->codec->extradata_size &&
AV_RL32(pkt->data+4) != MKTAG('j','P',' ',' '))){ // signature AV_RL32(pkt->data + 4) != MKTAG('j', 'P', ' ', ' '))) { // signature
error: error:
av_log(s, AV_LOG_ERROR, "malformed JPEG 2000 codestream\n"); av_log(s, AV_LOG_ERROR, "malformed JPEG 2000 codestream\n");
return -1; return -1;
} }
@ -126,7 +127,7 @@ static int write_packet(AVFormatContext *s, AVPacket *pkt)
#define OFFSET(x) offsetof(VideoMuxData, x) #define OFFSET(x) offsetof(VideoMuxData, x)
#define ENC AV_OPT_FLAG_ENCODING_PARAM #define ENC AV_OPT_FLAG_ENCODING_PARAM
static const AVOption muxoptions[] = { static const AVOption muxoptions[] = {
{ "start_number", "first number in the sequence", OFFSET(img_number), AV_OPT_TYPE_INT, {.i64 = 1}, 1, INT_MAX, ENC }, { "start_number", "first number in the sequence", OFFSET(img_number), AV_OPT_TYPE_INT, { .i64 = 1 }, 1, INT_MAX, ENC },
{ NULL }, { NULL },
}; };