mirror of https://git.ffmpeg.org/ffmpeg.git
432 lines
11 KiB
C
432 lines
11 KiB
C
/*
|
|
* Image format
|
|
* Copyright (c) 2000, 2001, 2002 Fabrice Bellard.
|
|
* Copyright (c) 2004 Michael Niedermayer
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
#include "avformat.h"
|
|
#include "avstring.h"
|
|
|
|
typedef struct {
|
|
int img_first;
|
|
int img_last;
|
|
int img_number;
|
|
int img_count;
|
|
int is_pipe;
|
|
char path[1024];
|
|
} VideoData;
|
|
|
|
typedef struct {
|
|
enum CodecID id;
|
|
const char *str;
|
|
} IdStrMap;
|
|
|
|
static const IdStrMap img_tags[] = {
|
|
{ CODEC_ID_MJPEG , "jpeg"},
|
|
{ CODEC_ID_MJPEG , "jpg"},
|
|
{ CODEC_ID_LJPEG , "ljpg"},
|
|
{ CODEC_ID_PNG , "png"},
|
|
{ CODEC_ID_PPM , "ppm"},
|
|
{ CODEC_ID_PGM , "pgm"},
|
|
{ CODEC_ID_PGMYUV , "pgmyuv"},
|
|
{ CODEC_ID_PBM , "pbm"},
|
|
{ CODEC_ID_PAM , "pam"},
|
|
{ CODEC_ID_MPEG1VIDEO, "mpg1-img"},
|
|
{ CODEC_ID_MPEG2VIDEO, "mpg2-img"},
|
|
{ CODEC_ID_MPEG4 , "mpg4-img"},
|
|
{ CODEC_ID_FFV1 , "ffv1-img"},
|
|
{ CODEC_ID_RAWVIDEO , "y"},
|
|
{ CODEC_ID_BMP , "bmp"},
|
|
{ CODEC_ID_GIF , "gif"},
|
|
{ CODEC_ID_TARGA , "tga"},
|
|
{ CODEC_ID_TIFF , "tiff"},
|
|
{ CODEC_ID_SGI , "sgi"},
|
|
{ CODEC_ID_PTX , "ptx"},
|
|
{0, NULL}
|
|
};
|
|
|
|
static int sizes[][2] = {
|
|
{ 640, 480 },
|
|
{ 720, 480 },
|
|
{ 720, 576 },
|
|
{ 352, 288 },
|
|
{ 352, 240 },
|
|
{ 160, 128 },
|
|
{ 512, 384 },
|
|
{ 640, 352 },
|
|
{ 640, 240 },
|
|
};
|
|
|
|
static int infer_size(int *width_ptr, int *height_ptr, int size)
|
|
{
|
|
int i;
|
|
|
|
for(i=0;i<sizeof(sizes)/sizeof(sizes[0]);i++) {
|
|
if ((sizes[i][0] * sizes[i][1]) == size) {
|
|
*width_ptr = sizes[i][0];
|
|
*height_ptr = sizes[i][1];
|
|
return 0;
|
|
}
|
|
}
|
|
return -1;
|
|
}
|
|
static enum CodecID av_str2id(const IdStrMap *tags, const char *str)
|
|
{
|
|
str= strrchr(str, '.');
|
|
if(!str) return CODEC_ID_NONE;
|
|
str++;
|
|
|
|
while (tags->id) {
|
|
int i;
|
|
for(i=0; toupper(tags->str[i]) == toupper(str[i]); i++){
|
|
if(tags->str[i]==0 && str[i]==0)
|
|
return tags->id;
|
|
}
|
|
|
|
tags++;
|
|
}
|
|
return CODEC_ID_NONE;
|
|
}
|
|
|
|
/* return -1 if no image found */
|
|
static int find_image_range(int *pfirst_index, int *plast_index,
|
|
const char *path)
|
|
{
|
|
char buf[1024];
|
|
int range, last_index, range1, first_index;
|
|
|
|
/* find the first image */
|
|
for(first_index = 0; first_index < 5; first_index++) {
|
|
if (av_get_frame_filename(buf, sizeof(buf), path, first_index) < 0){
|
|
*pfirst_index =
|
|
*plast_index = 1;
|
|
return 0;
|
|
}
|
|
if (url_exist(buf))
|
|
break;
|
|
}
|
|
if (first_index == 5)
|
|
goto fail;
|
|
|
|
/* find the last image */
|
|
last_index = first_index;
|
|
for(;;) {
|
|
range = 0;
|
|
for(;;) {
|
|
if (!range)
|
|
range1 = 1;
|
|
else
|
|
range1 = 2 * range;
|
|
if (av_get_frame_filename(buf, sizeof(buf), path,
|
|
last_index + range1) < 0)
|
|
goto fail;
|
|
if (!url_exist(buf))
|
|
break;
|
|
range = range1;
|
|
/* just in case... */
|
|
if (range >= (1 << 30))
|
|
goto fail;
|
|
}
|
|
/* we are sure than image last_index + range exists */
|
|
if (!range)
|
|
break;
|
|
last_index += range;
|
|
}
|
|
*pfirst_index = first_index;
|
|
*plast_index = last_index;
|
|
return 0;
|
|
fail:
|
|
return -1;
|
|
}
|
|
|
|
|
|
static int image_probe(AVProbeData *p)
|
|
{
|
|
if (p->filename && av_str2id(img_tags, p->filename)) {
|
|
if (av_filename_number_test(p->filename))
|
|
return AVPROBE_SCORE_MAX;
|
|
else
|
|
return AVPROBE_SCORE_MAX/2;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
enum CodecID av_guess_image2_codec(const char *filename){
|
|
return av_str2id(img_tags, filename);
|
|
}
|
|
|
|
static int img_read_header(AVFormatContext *s1, AVFormatParameters *ap)
|
|
{
|
|
VideoData *s = s1->priv_data;
|
|
int first_index, last_index;
|
|
AVStream *st;
|
|
|
|
s1->ctx_flags |= AVFMTCTX_NOHEADER;
|
|
|
|
st = av_new_stream(s1, 0);
|
|
if (!st) {
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
|
|
av_strlcpy(s->path, s1->filename, sizeof(s->path));
|
|
s->img_number = 0;
|
|
s->img_count = 0;
|
|
|
|
/* find format */
|
|
if (s1->iformat->flags & AVFMT_NOFILE)
|
|
s->is_pipe = 0;
|
|
else{
|
|
s->is_pipe = 1;
|
|
st->need_parsing = AVSTREAM_PARSE_FULL;
|
|
}
|
|
|
|
if (!ap->time_base.num) {
|
|
av_set_pts_info(st, 60, 1, 25);
|
|
} else {
|
|
av_set_pts_info(st, 60, ap->time_base.num, ap->time_base.den);
|
|
}
|
|
|
|
if(ap->width && ap->height){
|
|
st->codec->width = ap->width;
|
|
st->codec->height= ap->height;
|
|
}
|
|
|
|
if (!s->is_pipe) {
|
|
if (find_image_range(&first_index, &last_index, s->path) < 0)
|
|
return AVERROR(EIO);
|
|
s->img_first = first_index;
|
|
s->img_last = last_index;
|
|
s->img_number = first_index;
|
|
/* compute duration */
|
|
st->start_time = 0;
|
|
st->duration = last_index - first_index + 1;
|
|
}
|
|
|
|
if(ap->video_codec_id){
|
|
st->codec->codec_type = CODEC_TYPE_VIDEO;
|
|
st->codec->codec_id = ap->video_codec_id;
|
|
}else if(ap->audio_codec_id){
|
|
st->codec->codec_type = CODEC_TYPE_AUDIO;
|
|
st->codec->codec_id = ap->audio_codec_id;
|
|
}else{
|
|
st->codec->codec_type = CODEC_TYPE_VIDEO;
|
|
st->codec->codec_id = av_str2id(img_tags, s->path);
|
|
}
|
|
if(st->codec->codec_type == CODEC_TYPE_VIDEO && ap->pix_fmt != PIX_FMT_NONE)
|
|
st->codec->pix_fmt = ap->pix_fmt;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int img_read_packet(AVFormatContext *s1, AVPacket *pkt)
|
|
{
|
|
VideoData *s = s1->priv_data;
|
|
char filename[1024];
|
|
int i;
|
|
int size[3]={0}, ret[3]={0};
|
|
ByteIOContext *f[3];
|
|
AVCodecContext *codec= s1->streams[0]->codec;
|
|
|
|
if (!s->is_pipe) {
|
|
/* loop over input */
|
|
if (s1->loop_input && s->img_number > s->img_last) {
|
|
s->img_number = s->img_first;
|
|
}
|
|
if (av_get_frame_filename(filename, sizeof(filename),
|
|
s->path, s->img_number)<0 && s->img_number > 1)
|
|
return AVERROR(EIO);
|
|
for(i=0; i<3; i++){
|
|
if (url_fopen(&f[i], filename, URL_RDONLY) < 0)
|
|
return AVERROR(EIO);
|
|
size[i]= url_fsize(f[i]);
|
|
|
|
if(codec->codec_id != CODEC_ID_RAWVIDEO)
|
|
break;
|
|
filename[ strlen(filename) - 1 ]= 'U' + i;
|
|
}
|
|
|
|
if(codec->codec_id == CODEC_ID_RAWVIDEO && !codec->width)
|
|
infer_size(&codec->width, &codec->height, size[0]);
|
|
} else {
|
|
f[0] = s1->pb;
|
|
if (url_feof(f[0]))
|
|
return AVERROR(EIO);
|
|
size[0]= 4096;
|
|
}
|
|
|
|
av_new_packet(pkt, size[0] + size[1] + size[2]);
|
|
pkt->stream_index = 0;
|
|
pkt->flags |= PKT_FLAG_KEY;
|
|
|
|
pkt->size= 0;
|
|
for(i=0; i<3; i++){
|
|
if(size[i]){
|
|
ret[i]= get_buffer(f[i], pkt->data + pkt->size, size[i]);
|
|
if (!s->is_pipe)
|
|
url_fclose(f[i]);
|
|
if(ret[i]>0)
|
|
pkt->size += ret[i];
|
|
}
|
|
}
|
|
|
|
if (ret[0] <= 0 || ret[1]<0 || ret[2]<0) {
|
|
av_free_packet(pkt);
|
|
return AVERROR(EIO); /* signal EOF */
|
|
} else {
|
|
s->img_count++;
|
|
s->img_number++;
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
static int img_read_close(AVFormatContext *s1)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_MUXERS
|
|
/******************************************************/
|
|
/* image output */
|
|
|
|
static int img_write_header(AVFormatContext *s)
|
|
{
|
|
VideoData *img = s->priv_data;
|
|
|
|
img->img_number = 1;
|
|
av_strlcpy(img->path, s->filename, sizeof(img->path));
|
|
|
|
/* find format */
|
|
if (s->oformat->flags & AVFMT_NOFILE)
|
|
img->is_pipe = 0;
|
|
else
|
|
img->is_pipe = 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int img_write_packet(AVFormatContext *s, AVPacket *pkt)
|
|
{
|
|
VideoData *img = s->priv_data;
|
|
ByteIOContext *pb[3];
|
|
char filename[1024];
|
|
AVCodecContext *codec= s->streams[ pkt->stream_index ]->codec;
|
|
int i;
|
|
|
|
if (!img->is_pipe) {
|
|
if (av_get_frame_filename(filename, sizeof(filename),
|
|
img->path, img->img_number) < 0 && img->img_number>1)
|
|
return AVERROR(EIO);
|
|
for(i=0; i<3; i++){
|
|
if (url_fopen(&pb[i], filename, URL_WRONLY) < 0)
|
|
return AVERROR(EIO);
|
|
|
|
if(codec->codec_id != CODEC_ID_RAWVIDEO)
|
|
break;
|
|
filename[ strlen(filename) - 1 ]= 'U' + i;
|
|
}
|
|
} else {
|
|
pb[0] = s->pb;
|
|
}
|
|
|
|
if(codec->codec_id == CODEC_ID_RAWVIDEO){
|
|
int ysize = codec->width * codec->height;
|
|
put_buffer(pb[0], pkt->data , ysize);
|
|
put_buffer(pb[1], pkt->data + ysize, (pkt->size - ysize)/2);
|
|
put_buffer(pb[2], pkt->data + ysize +(pkt->size - ysize)/2, (pkt->size - ysize)/2);
|
|
put_flush_packet(pb[1]);
|
|
put_flush_packet(pb[2]);
|
|
url_fclose(pb[1]);
|
|
url_fclose(pb[2]);
|
|
}else{
|
|
put_buffer(pb[0], pkt->data, pkt->size);
|
|
}
|
|
put_flush_packet(pb[0]);
|
|
if (!img->is_pipe) {
|
|
url_fclose(pb[0]);
|
|
}
|
|
|
|
img->img_number++;
|
|
return 0;
|
|
}
|
|
|
|
static int img_write_trailer(AVFormatContext *s)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
#endif /* CONFIG_MUXERS */
|
|
|
|
/* input */
|
|
#ifdef CONFIG_IMAGE2_DEMUXER
|
|
AVInputFormat image2_demuxer = {
|
|
"image2",
|
|
"image2 sequence",
|
|
sizeof(VideoData),
|
|
image_probe,
|
|
img_read_header,
|
|
img_read_packet,
|
|
img_read_close,
|
|
NULL,
|
|
NULL,
|
|
AVFMT_NOFILE,
|
|
};
|
|
#endif
|
|
#ifdef CONFIG_IMAGE2PIPE_DEMUXER
|
|
AVInputFormat image2pipe_demuxer = {
|
|
"image2pipe",
|
|
"piped image2 sequence",
|
|
sizeof(VideoData),
|
|
NULL, /* no probe */
|
|
img_read_header,
|
|
img_read_packet,
|
|
img_read_close,
|
|
NULL,
|
|
};
|
|
#endif
|
|
|
|
/* output */
|
|
#ifdef CONFIG_IMAGE2_MUXER
|
|
AVOutputFormat image2_muxer = {
|
|
"image2",
|
|
"image2 sequence",
|
|
"",
|
|
"",
|
|
sizeof(VideoData),
|
|
CODEC_ID_NONE,
|
|
CODEC_ID_MJPEG,
|
|
img_write_header,
|
|
img_write_packet,
|
|
img_write_trailer,
|
|
AVFMT_NOFILE,
|
|
};
|
|
#endif
|
|
#ifdef CONFIG_IMAGE2PIPE_MUXER
|
|
AVOutputFormat image2pipe_muxer = {
|
|
"image2pipe",
|
|
"piped image2 sequence",
|
|
"",
|
|
"",
|
|
sizeof(VideoData),
|
|
CODEC_ID_NONE,
|
|
CODEC_ID_MJPEG,
|
|
img_write_header,
|
|
img_write_packet,
|
|
img_write_trailer,
|
|
};
|
|
#endif
|