mirror of https://git.ffmpeg.org/ffmpeg.git
517 lines
15 KiB
C
517 lines
15 KiB
C
/*
|
|
* Image format
|
|
* Copyright (c) 2000, 2001, 2002 Fabrice Bellard
|
|
* Copyright (c) 2004 Michael Niedermayer
|
|
*
|
|
* This file is part of Libav.
|
|
*
|
|
* Libav 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.
|
|
*
|
|
* Libav 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 Libav; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include "libavutil/intreadwrite.h"
|
|
#include "libavutil/avstring.h"
|
|
#include "libavutil/log.h"
|
|
#include "libavutil/opt.h"
|
|
#include "libavutil/pixdesc.h"
|
|
#include "libavutil/parseutils.h"
|
|
#include "avformat.h"
|
|
#include "avio_internal.h"
|
|
#include "internal.h"
|
|
#include <strings.h>
|
|
|
|
typedef struct {
|
|
const AVClass *class; /**< Class for private options. */
|
|
int img_first;
|
|
int img_last;
|
|
int img_number;
|
|
int img_count;
|
|
int is_pipe;
|
|
char path[1024];
|
|
char *pixel_format; /**< Set by a private option. */
|
|
char *video_size; /**< Set by a private option. */
|
|
char *framerate; /**< Set by a private option. */
|
|
int loop;
|
|
} 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_PNG , "mng"},
|
|
{ CODEC_ID_PPM , "ppm"},
|
|
{ CODEC_ID_PPM , "pnm"},
|
|
{ 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_TIFF , "tif"},
|
|
{ CODEC_ID_SGI , "sgi"},
|
|
{ CODEC_ID_PTX , "ptx"},
|
|
{ CODEC_ID_PCX , "pcx"},
|
|
{ CODEC_ID_SUNRAST , "sun"},
|
|
{ CODEC_ID_SUNRAST , "ras"},
|
|
{ CODEC_ID_SUNRAST , "rs"},
|
|
{ CODEC_ID_SUNRAST , "im1"},
|
|
{ CODEC_ID_SUNRAST , "im8"},
|
|
{ CODEC_ID_SUNRAST , "im24"},
|
|
{ CODEC_ID_SUNRAST , "sunras"},
|
|
{ CODEC_ID_JPEG2000 , "jp2"},
|
|
{ CODEC_ID_JPEG2000 , "jpc"},
|
|
{ CODEC_ID_DPX , "dpx"},
|
|
{ CODEC_ID_PICTOR , "pic"},
|
|
{ CODEC_ID_NONE , NULL}
|
|
};
|
|
|
|
static const 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<FF_ARRAY_ELEMS(sizes);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) {
|
|
if (!strcasecmp(str, tags->str))
|
|
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;
|
|
if (avio_check(buf, AVIO_FLAG_READ) > 0)
|
|
return 0;
|
|
return -1;
|
|
}
|
|
if (avio_check(buf, AVIO_FLAG_READ) > 0)
|
|
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 (avio_check(buf, AVIO_FLAG_READ) <= 0)
|
|
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 read_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 ff_guess_image2_codec(const char *filename)
|
|
{
|
|
return av_str2id(img_tags, filename);
|
|
}
|
|
|
|
#if FF_API_GUESS_IMG2_CODEC
|
|
enum CodecID av_guess_image2_codec(const char *filename){
|
|
return av_str2id(img_tags, filename);
|
|
}
|
|
#endif
|
|
|
|
static int read_header(AVFormatContext *s1, AVFormatParameters *ap)
|
|
{
|
|
VideoData *s = s1->priv_data;
|
|
int first_index, last_index, ret = 0;
|
|
int width = 0, height = 0;
|
|
AVStream *st;
|
|
enum PixelFormat pix_fmt = PIX_FMT_NONE;
|
|
AVRational framerate;
|
|
|
|
s1->ctx_flags |= AVFMTCTX_NOHEADER;
|
|
|
|
st = av_new_stream(s1, 0);
|
|
if (!st) {
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
|
|
if (s->pixel_format && (pix_fmt = av_get_pix_fmt(s->pixel_format)) == PIX_FMT_NONE) {
|
|
av_log(s1, AV_LOG_ERROR, "No such pixel format: %s.\n", s->pixel_format);
|
|
return AVERROR(EINVAL);
|
|
}
|
|
if (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;
|
|
}
|
|
if ((ret = av_parse_video_rate(&framerate, s->framerate)) < 0) {
|
|
av_log(s, AV_LOG_ERROR, "Could not parse framerate: %s.\n", s->framerate);
|
|
return ret;
|
|
}
|
|
|
|
#if FF_API_LOOP_INPUT
|
|
if (s1->loop_input)
|
|
s->loop = s1->loop_input;
|
|
#endif
|
|
|
|
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;
|
|
}
|
|
|
|
av_set_pts_info(st, 60, framerate.den, framerate.num);
|
|
|
|
if (width && height) {
|
|
st->codec->width = width;
|
|
st->codec->height = height;
|
|
}
|
|
|
|
if (!s->is_pipe) {
|
|
if (find_image_range(&first_index, &last_index, s->path) < 0)
|
|
return AVERROR(ENOENT);
|
|
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(s1->video_codec_id){
|
|
st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
|
|
st->codec->codec_id = s1->video_codec_id;
|
|
}else if(s1->audio_codec_id){
|
|
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
|
|
st->codec->codec_id = s1->audio_codec_id;
|
|
}else{
|
|
st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
|
|
st->codec->codec_id = av_str2id(img_tags, s->path);
|
|
}
|
|
if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO && pix_fmt != PIX_FMT_NONE)
|
|
st->codec->pix_fmt = pix_fmt;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int read_packet(AVFormatContext *s1, AVPacket *pkt)
|
|
{
|
|
VideoData *s = s1->priv_data;
|
|
char filename[1024];
|
|
int i;
|
|
int size[3]={0}, ret[3]={0};
|
|
AVIOContext *f[3];
|
|
AVCodecContext *codec= s1->streams[0]->codec;
|
|
|
|
if (!s->is_pipe) {
|
|
/* loop over input */
|
|
if (s->loop && s->img_number > s->img_last) {
|
|
s->img_number = s->img_first;
|
|
}
|
|
if (s->img_number > s->img_last)
|
|
return AVERROR_EOF;
|
|
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 (avio_open(&f[i], filename, AVIO_FLAG_READ) < 0) {
|
|
if(i==1)
|
|
break;
|
|
av_log(s1, AV_LOG_ERROR, "Could not open file : %s\n",filename);
|
|
return AVERROR(EIO);
|
|
}
|
|
size[i]= avio_size(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 (f[0]->eof_reached)
|
|
return AVERROR(EIO);
|
|
size[0]= 4096;
|
|
}
|
|
|
|
av_new_packet(pkt, size[0] + size[1] + size[2]);
|
|
pkt->stream_index = 0;
|
|
pkt->flags |= AV_PKT_FLAG_KEY;
|
|
|
|
pkt->size= 0;
|
|
for(i=0; i<3; i++){
|
|
if(size[i]){
|
|
ret[i]= avio_read(f[i], pkt->data + pkt->size, size[i]);
|
|
if (!s->is_pipe)
|
|
avio_close(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;
|
|
}
|
|
}
|
|
|
|
#if CONFIG_IMAGE2_MUXER || CONFIG_IMAGE2PIPE_MUXER
|
|
/******************************************************/
|
|
/* image output */
|
|
|
|
static int 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 write_packet(AVFormatContext *s, AVPacket *pkt)
|
|
{
|
|
VideoData *img = s->priv_data;
|
|
AVIOContext *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) {
|
|
av_log(s, AV_LOG_ERROR,
|
|
"Could not get frame filename number %d from pattern '%s'\n",
|
|
img->img_number, img->path);
|
|
return AVERROR(EIO);
|
|
}
|
|
for(i=0; i<3; i++){
|
|
if (avio_open(&pb[i], filename, AVIO_FLAG_WRITE) < 0) {
|
|
av_log(s, AV_LOG_ERROR, "Could not open file : %s\n",filename);
|
|
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;
|
|
avio_write(pb[0], pkt->data , ysize);
|
|
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_flush(pb[1]);
|
|
avio_flush(pb[2]);
|
|
avio_close(pb[1]);
|
|
avio_close(pb[2]);
|
|
}else{
|
|
if(av_str2id(img_tags, s->filename) == CODEC_ID_JPEG2000){
|
|
AVStream *st = s->streams[0];
|
|
if(st->codec->extradata_size > 8 &&
|
|
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'))
|
|
goto error;
|
|
avio_wb32(pb[0], 12);
|
|
ffio_wfourcc(pb[0], "jP ");
|
|
avio_wb32(pb[0], 0x0D0A870A); // signature
|
|
avio_wb32(pb[0], 20);
|
|
ffio_wfourcc(pb[0], "ftyp");
|
|
ffio_wfourcc(pb[0], "jp2 ");
|
|
avio_wb32(pb[0], 0);
|
|
ffio_wfourcc(pb[0], "jp2 ");
|
|
avio_write(pb[0], st->codec->extradata, st->codec->extradata_size);
|
|
}else if(pkt->size < 8 ||
|
|
(!st->codec->extradata_size &&
|
|
AV_RL32(pkt->data+4) != MKTAG('j','P',' ',' '))){ // signature
|
|
error:
|
|
av_log(s, AV_LOG_ERROR, "malformated jpeg2000 codestream\n");
|
|
return -1;
|
|
}
|
|
}
|
|
avio_write(pb[0], pkt->data, pkt->size);
|
|
}
|
|
avio_flush(pb[0]);
|
|
if (!img->is_pipe) {
|
|
avio_close(pb[0]);
|
|
}
|
|
|
|
img->img_number++;
|
|
return 0;
|
|
}
|
|
|
|
#endif /* CONFIG_IMAGE2_MUXER || CONFIG_IMAGE2PIPE_MUXER */
|
|
|
|
#define OFFSET(x) offsetof(VideoData, x)
|
|
#define DEC AV_OPT_FLAG_DECODING_PARAM
|
|
static const AVOption options[] = {
|
|
{ "pixel_format", "", OFFSET(pixel_format), FF_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
|
|
{ "video_size", "", OFFSET(video_size), FF_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
|
|
{ "framerate", "", OFFSET(framerate), FF_OPT_TYPE_STRING, {.str = "25"}, 0, 0, DEC },
|
|
{ "loop", "", OFFSET(loop), FF_OPT_TYPE_INT, {.dbl = 0}, 0, 1, DEC },
|
|
{ NULL },
|
|
};
|
|
|
|
static const AVClass img2_class = {
|
|
.class_name = "image2 demuxer",
|
|
.item_name = av_default_item_name,
|
|
.option = options,
|
|
.version = LIBAVUTIL_VERSION_INT,
|
|
};
|
|
|
|
/* input */
|
|
#if CONFIG_IMAGE2_DEMUXER
|
|
AVInputFormat ff_image2_demuxer = {
|
|
.name = "image2",
|
|
.long_name = NULL_IF_CONFIG_SMALL("image2 sequence"),
|
|
.priv_data_size = sizeof(VideoData),
|
|
.read_probe = read_probe,
|
|
.read_header = read_header,
|
|
.read_packet = read_packet,
|
|
.flags = AVFMT_NOFILE,
|
|
.priv_class = &img2_class,
|
|
};
|
|
#endif
|
|
#if CONFIG_IMAGE2PIPE_DEMUXER
|
|
AVInputFormat ff_image2pipe_demuxer = {
|
|
.name = "image2pipe",
|
|
.long_name = NULL_IF_CONFIG_SMALL("piped image2 sequence"),
|
|
.priv_data_size = sizeof(VideoData),
|
|
.read_header = read_header,
|
|
.read_packet = read_packet,
|
|
.priv_class = &img2_class,
|
|
};
|
|
#endif
|
|
|
|
/* output */
|
|
#if CONFIG_IMAGE2_MUXER
|
|
AVOutputFormat ff_image2_muxer = {
|
|
.name = "image2",
|
|
.long_name = NULL_IF_CONFIG_SMALL("image2 sequence"),
|
|
.extensions = "bmp,dpx,jpeg,jpg,ljpg,pam,pbm,pcx,pgm,pgmyuv,png,"
|
|
"ppm,sgi,tga,tif,tiff,jp2",
|
|
.priv_data_size = sizeof(VideoData),
|
|
.video_codec = CODEC_ID_MJPEG,
|
|
.write_header = write_header,
|
|
.write_packet = write_packet,
|
|
.flags = AVFMT_NOTIMESTAMPS | AVFMT_NODIMENSIONS | AVFMT_NOFILE
|
|
};
|
|
#endif
|
|
#if CONFIG_IMAGE2PIPE_MUXER
|
|
AVOutputFormat ff_image2pipe_muxer = {
|
|
.name = "image2pipe",
|
|
.long_name = NULL_IF_CONFIG_SMALL("piped image2 sequence"),
|
|
.priv_data_size = sizeof(VideoData),
|
|
.video_codec = CODEC_ID_MJPEG,
|
|
.write_header = write_header,
|
|
.write_packet = write_packet,
|
|
.flags = AVFMT_NOTIMESTAMPS | AVFMT_NODIMENSIONS
|
|
};
|
|
#endif
|