[libav.git] / libavformat / img2.c

/*
 * Image format
 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard.
 * Copyright (c) 2004 Michael Niedermayer
 *
 * This library 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 of the License, or (at your option) any later version.
 *
 * This library 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 this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
#include "avformat.h"

/* XXX: this is a hack */
extern int loop_input;

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"},
    {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 (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 (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 (filename_number_test(p->filename) >= 0 && av_str2id(img_tags, p->filename))
        return AVPROBE_SCORE_MAX;
    else
        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 -ENOMEM;
    }

    pstrcpy(s->path, sizeof(s->path), s1->filename);
    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= 1;
    }
        
    if (!ap || !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 && 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_IO;
        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 f1[3], *f[3]= {&f1[0], &f1[1], &f1[2]};
    AVCodecContext *codec= &s1->streams[0]->codec;

    if (!s->is_pipe) {
        /* loop over input */
        if (loop_input && s->img_number > s->img_last) {
            s->img_number = s->img_first;
        }
        if (get_frame_filename(filename, sizeof(filename),
                               s->path, s->img_number)<0 && s->img_number > 1)
            return AVERROR_IO;
        for(i=0; i<3; i++){
            if (url_fopen(f[i], filename, URL_RDONLY) < 0)
                return AVERROR_IO;
            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_IO;
        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_IO; /* signal EOF */
    } else {
        s->img_count++;
        s->img_number++;
        return 0;
    }
}

static int img_read_close(AVFormatContext *s1)
{
    return 0;
}

/******************************************************/
/* image output */

static int img_write_header(AVFormatContext *s)
{
    VideoData *img = s->priv_data;

    img->img_number = 1;
    pstrcpy(img->path, sizeof(img->path), s->filename);

    /* 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 pb1[3], *pb[3]= {&pb1[0], &pb1[1], &pb1[2]};
    char filename[1024];
    AVCodecContext *codec= &s->streams[ pkt->stream_index ]->codec;
    int i;

    if (!img->is_pipe) {
        if (get_frame_filename(filename, sizeof(filename), 
                               img->path, img->img_number) < 0 && img->img_number>1)
            return AVERROR_IO;
        for(i=0; i<3; i++){
            if (url_fopen(pb[i], filename, URL_WRONLY) < 0)
                return AVERROR_IO;
        
            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;
}

/* input */

static AVInputFormat image2_iformat = {
    "image2",
    "image2 sequence",
    sizeof(VideoData),
    image_probe,
    img_read_header,
    img_read_packet,
    img_read_close,
    NULL,
    NULL,
    AVFMT_NOFILE,
};

static AVInputFormat image2pipe_iformat = {
    "image2pipe",
    "piped image2 sequence",
    sizeof(VideoData),
    NULL, /* no probe */
    img_read_header,
    img_read_packet,
    img_read_close,
    NULL,
};


/* output */

static AVOutputFormat image2_oformat = {
    "image2",
    "image2 sequence",
    "",
    "",
    sizeof(VideoData),
    CODEC_ID_NONE,
    CODEC_ID_MJPEG,
    img_write_header,
    img_write_packet,
    img_write_trailer,
    AVFMT_NOFILE,
};

static AVOutputFormat image2pipe_oformat = {
    "image2pipe",
    "piped image2 sequence",
    "",
    "",
    sizeof(VideoData),
    CODEC_ID_NONE,
    CODEC_ID_MJPEG,
    img_write_header,
    img_write_packet,
    img_write_trailer,
};

int img2_init(void)
{
    av_register_input_format(&image2_iformat);
    av_register_output_format(&image2_oformat);

    av_register_input_format(&image2pipe_iformat);
    av_register_output_format(&image2pipe_oformat);
    
    return 0;
}
Commit	Line	Data
03cfe134 MN	1	/*
	2	* Image format
	3	* Copyright (c) 2000, 2001, 2002 Fabrice Bellard.
	4	* Copyright (c) 2004 Michael Niedermayer
	5	*
	6	* This library is free software; you can redistribute it and/or
	7	* modify it under the terms of the GNU Lesser General Public
	8	* License as published by the Free Software Foundation; either
	9	* version 2 of the License, or (at your option) any later version.
	10	*
	11	* This library is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	14	* Lesser General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU Lesser General Public
	17	* License along with this library; if not, write to the Free Software
	18	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	19	*/
	20	#include "avformat.h"
	21
b339fb00 MN	22	/* XXX: this is a hack */
	23	extern int loop_input;
	24
03cfe134 MN	25	typedef struct {
	26	int img_first;
	27	int img_last;
	28	int img_number;
	29	int img_count;
	30	int is_pipe;
	31	char path[1024];
	32	} VideoData;
	33
	34	typedef struct {
	35	enum CodecID id;
	36	const char *str;
	37	} IdStrMap;
	38
	39	static const IdStrMap img_tags[] = {
	40	{ CODEC_ID_MJPEG , "jpeg"},
	41	{ CODEC_ID_MJPEG , "jpg"},
	42	{ CODEC_ID_LJPEG , "ljpg"},
4eff7cf4	43	{ CODEC_ID_PNG , "png"},
5b6d5596 MN	44	{ CODEC_ID_PPM , "ppm"},
	45	{ CODEC_ID_PGM , "pgm"},
	46	{ CODEC_ID_PGMYUV , "pgmyuv"},
	47	{ CODEC_ID_PBM , "pbm"},
	48	{ CODEC_ID_PAM , "pam"},
03cfe134 MN	49	{ CODEC_ID_MPEG1VIDEO, "mpg1-img"},
	50	{ CODEC_ID_MPEG2VIDEO, "mpg2-img"},
	51	{ CODEC_ID_MPEG4 , "mpg4-img"},
	52	{ CODEC_ID_FFV1 , "ffv1-img"},
55cf1959	53	{ CODEC_ID_RAWVIDEO , "y"},
03cfe134 MN	54	{0, NULL}
	55	};
	56
55cf1959 MN	57	static int sizes[][2] = {
	58	{ 640, 480 },
	59	{ 720, 480 },
	60	{ 720, 576 },
	61	{ 352, 288 },
	62	{ 352, 240 },
	63	{ 160, 128 },
	64	{ 512, 384 },
	65	{ 640, 352 },
	66	{ 640, 240 },
	67	};
	68
	69	static int infer_size(int width_ptr, int height_ptr, int size)
	70	{
	71	int i;
	72
	73	for(i=0;i<sizeof(sizes)/sizeof(sizes[0]);i++) {
	74	if ((sizes[i][0] * sizes[i][1]) == size) {
	75	*width_ptr = sizes[i][0];
	76	*height_ptr = sizes[i][1];
	77	return 0;
	78	}
	79	}
	80	return -1;
	81	}
03cfe134 MN	82	static enum CodecID av_str2id(const IdStrMap tags, const char str)
03cfe134 MN	83	{
3ed02129 MN	84	str= strrchr(str, '.');
	85	if(!str) return CODEC_ID_NONE;
	86	str++;
03cfe134 MN	87
	88	while (tags->id) {
	89	int i;
	90	for(i=0; toupper(tags->str[i]) == toupper(str[i]); i++){
	91	if(tags->str[i]==0 && str[i]==0)
	92	return tags->id;
	93	}
	94
	95	tags++;
	96	}
	97	return CODEC_ID_NONE;
	98	}
	99
03cfe134 MN	100	/* return -1 if no image found */
	101	static int find_image_range(int pfirst_index, int plast_index,
	102	const char *path)
	103	{
	104	char buf[1024];
	105	int range, last_index, range1, first_index;
	106
	107	/* find the first image */
	108	for(first_index = 0; first_index < 5; first_index++) {
61fb3183 MN	109	if (get_frame_filename(buf, sizeof(buf), path, first_index) < 0){
	110	*pfirst_index =
	111	*plast_index = 1;
	112	return 0;
	113	}
03cfe134 MN	114	if (url_exist(buf))
	115	break;
	116	}
	117	if (first_index == 5)
	118	goto fail;
	119
	120	/* find the last image */
	121	last_index = first_index;
	122	for(;;) {
	123	range = 0;
	124	for(;;) {
	125	if (!range)
	126	range1 = 1;
	127	else
	128	range1 = 2 * range;
	129	if (get_frame_filename(buf, sizeof(buf), path,
	130	last_index + range1) < 0)
	131	goto fail;
	132	if (!url_exist(buf))
	133	break;
	134	range = range1;
	135	/* just in case... */
	136	if (range >= (1 << 30))
	137	goto fail;
	138	}
	139	/* we are sure than image last_index + range exists */
	140	if (!range)
	141	break;
	142	last_index += range;
	143	}
	144	*pfirst_index = first_index;
	145	*plast_index = last_index;
	146	return 0;
	147	fail:
	148	return -1;
	149	}
	150
	151
	152	static int image_probe(AVProbeData *p)
	153	{
	154	if (filename_number_test(p->filename) >= 0 && av_str2id(img_tags, p->filename))
	155	return AVPROBE_SCORE_MAX;
	156	else
	157	return 0;
	158	}
	159
5b6d5596 MN	160	enum CodecID av_guess_image2_codec(const char *filename){
	161	return av_str2id(img_tags, filename);
	162	}
	163
03cfe134 MN	164	static int img_read_header(AVFormatContext s1, AVFormatParameters ap)
	165	{
	166	VideoData *s = s1->priv_data;
	167	int first_index, last_index;
03cfe134 MN	168	AVStream *st;
	169
	170	s1->ctx_flags \|= AVFMTCTX_NOHEADER;
	171
	172	st = av_new_stream(s1, 0);
	173	if (!st) {
03cfe134 MN	174	return -ENOMEM;
	175	}
	176
568e18b1	177	pstrcpy(s->path, sizeof(s->path), s1->filename);
03cfe134 MN	178	s->img_number = 0;
	179	s->img_count = 0;
	180
	181	/* find format */
	182	if (s1->iformat->flags & AVFMT_NOFILE)
	183	s->is_pipe = 0;
146210ca	184	else{
03cfe134	185	s->is_pipe = 1;
146210ca MN	186	st->need_parsing= 1;
146210ca MN	187	}
03cfe134	188
c0df9d75 MN	189	if (!ap \|\| !ap->time_base.num) {
c0df9d75 MN	190	av_set_pts_info(st, 60, 1, 25);
03cfe134	191	} else {
c0df9d75	192	av_set_pts_info(st, 60, ap->time_base.num, ap->time_base.den);
03cfe134 MN	193	}
03cfe134 MN	194
55cf1959 MN	195	if(ap && ap->width && ap->height){
	196	st->codec.width = ap->width;
	197	st->codec.height= ap->height;
	198	}
	199
03cfe134 MN	200	if (!s->is_pipe) {
03cfe134 MN	201	if (find_image_range(&first_index, &last_index, s->path) < 0)
ae895a40	202	return AVERROR_IO;
03cfe134 MN	203	s->img_first = first_index;
	204	s->img_last = last_index;
	205	s->img_number = first_index;
	206	/* compute duration */
	207	st->start_time = 0;
c0df9d75	208	st->duration = last_index - first_index + 1;
03cfe134 MN	209	}
03cfe134 MN	210
5b6d5596 MN	211	if(ap->video_codec_id){
	212	st->codec.codec_type = CODEC_TYPE_VIDEO;
	213	st->codec.codec_id = ap->video_codec_id;
	214	}else if(ap->audio_codec_id){
	215	st->codec.codec_type = CODEC_TYPE_AUDIO;
	216	st->codec.codec_id = ap->audio_codec_id;
	217	}else{
	218	st->codec.codec_type = CODEC_TYPE_VIDEO;
	219	st->codec.codec_id = av_str2id(img_tags, s->path);
	220	}
644a9262	221	if(st->codec.codec_type == CODEC_TYPE_VIDEO && ap->pix_fmt != PIX_FMT_NONE)
2c34596f	222	st->codec.pix_fmt = ap->pix_fmt;
03cfe134 MN	223
03cfe134 MN	224	return 0;
03cfe134 MN	225	}
	226
	227	static int img_read_packet(AVFormatContext s1, AVPacket pkt)
	228	{
	229	VideoData *s = s1->priv_data;
	230	char filename[1024];
55cf1959 MN	231	int i;
	232	int size[3]={0}, ret[3]={0};
	233	ByteIOContext f1[3], *f[3]= {&f1[0], &f1[1], &f1[2]};
	234	AVCodecContext *codec= &s1->streams[0]->codec;
03cfe134 MN	235
	236	if (!s->is_pipe) {
	237	/* loop over input */
b339fb00	238	if (loop_input && s->img_number > s->img_last) {
03cfe134	239	s->img_number = s->img_first;
b339fb00	240	}
03cfe134	241	if (get_frame_filename(filename, sizeof(filename),
61fb3183	242	s->path, s->img_number)<0 && s->img_number > 1)
03cfe134	243	return AVERROR_IO;
55cf1959 MN	244	for(i=0; i<3; i++){
	245	if (url_fopen(f[i], filename, URL_RDONLY) < 0)
	246	return AVERROR_IO;
a965c478	247	size[i]= url_fsize(f[i]);
55cf1959 MN	248
	249	if(codec->codec_id != CODEC_ID_RAWVIDEO)
	250	break;
	251	filename[ strlen(filename) - 1 ]= 'U' + i;
	252	}
	253
	254	if(codec->codec_id == CODEC_ID_RAWVIDEO && !codec->width)
	255	infer_size(&codec->width, &codec->height, size[0]);
03cfe134	256	} else {
55cf1959 MN	257	f[0] = &s1->pb;
55cf1959 MN	258	if (url_feof(f[0]))
03cfe134	259	return AVERROR_IO;
55cf1959	260	size[0]= 4096;
03cfe134 MN	261	}
03cfe134 MN	262
55cf1959	263	av_new_packet(pkt, size[0] + size[1] + size[2]);
03cfe134 MN	264	pkt->stream_index = 0;
	265	pkt->flags \|= PKT_FLAG_KEY;
	266
55cf1959 MN	267	pkt->size= 0;
	268	for(i=0; i<3; i++){
	269	if(size[i]){
	270	ret[i]= get_buffer(f[i], pkt->data + pkt->size, size[i]);
	271	if (!s->is_pipe)
	272	url_fclose(f[i]);
	273	if(ret[i]>0)
	274	pkt->size += ret[i];
	275	}
03cfe134 MN	276	}
03cfe134 MN	277
55cf1959	278	if (ret[0] <= 0 \|\| ret[1]<0 \|\| ret[2]<0) {
03cfe134 MN	279	av_free_packet(pkt);
	280	return AVERROR_IO; /* signal EOF */
	281	} else {
	282	s->img_count++;
	283	s->img_number++;
	284	return 0;
	285	}
	286	}
	287
	288	static int img_read_close(AVFormatContext *s1)
	289	{
	290	return 0;
	291	}
	292
	293	/******************************************************/
	294	/* image output */
	295
	296	static int img_write_header(AVFormatContext *s)
	297	{
	298	VideoData *img = s->priv_data;
	299
	300	img->img_number = 1;
568e18b1	301	pstrcpy(img->path, sizeof(img->path), s->filename);
03cfe134 MN	302
	303	/* find format */
	304	if (s->oformat->flags & AVFMT_NOFILE)
	305	img->is_pipe = 0;
	306	else
	307	img->is_pipe = 1;
	308
	309	return 0;
	310	}
	311
	312	static int img_write_packet(AVFormatContext s, AVPacket pkt)
	313	{
	314	VideoData *img = s->priv_data;
55cf1959	315	ByteIOContext pb1[3], *pb[3]= {&pb1[0], &pb1[1], &pb1[2]};
03cfe134	316	char filename[1024];
55cf1959 MN	317	AVCodecContext *codec= &s->streams[ pkt->stream_index ]->codec;
55cf1959 MN	318	int i;
03cfe134 MN	319
	320	if (!img->is_pipe) {
	321	if (get_frame_filename(filename, sizeof(filename),
61fb3183	322	img->path, img->img_number) < 0 && img->img_number>1)
03cfe134	323	return AVERROR_IO;
55cf1959 MN	324	for(i=0; i<3; i++){
	325	if (url_fopen(pb[i], filename, URL_WRONLY) < 0)
	326	return AVERROR_IO;
	327
	328	if(codec->codec_id != CODEC_ID_RAWVIDEO)
	329	break;
	330	filename[ strlen(filename) - 1 ]= 'U' + i;
	331	}
03cfe134	332	} else {
55cf1959	333	pb[0] = &s->pb;
03cfe134	334	}
55cf1959 MN	335
55cf1959 MN	336	if(codec->codec_id == CODEC_ID_RAWVIDEO){
2c34596f MN	337	int ysize = codec->width * codec->height;
	338	put_buffer(pb[0], pkt->data , ysize);
	339	put_buffer(pb[1], pkt->data + ysize, (pkt->size - ysize)/2);
	340	put_buffer(pb[2], pkt->data + ysize +(pkt->size - ysize)/2, (pkt->size - ysize)/2);
55cf1959 MN	341	put_flush_packet(pb[1]);
	342	put_flush_packet(pb[2]);
	343	url_fclose(pb[1]);
	344	url_fclose(pb[2]);
	345	}else{
	346	put_buffer(pb[0], pkt->data, pkt->size);
	347	}
	348	put_flush_packet(pb[0]);
03cfe134	349	if (!img->is_pipe) {
55cf1959	350	url_fclose(pb[0]);
03cfe134 MN	351	}
	352
	353	img->img_number++;
	354	return 0;
	355	}
	356
	357	static int img_write_trailer(AVFormatContext *s)
	358	{
	359	return 0;
	360	}
	361
	362	/* input */
	363
	364	static AVInputFormat image2_iformat = {
	365	"image2",
	366	"image2 sequence",
	367	sizeof(VideoData),
	368	image_probe,
	369	img_read_header,
	370	img_read_packet,
	371	img_read_close,
	372	NULL,
	373	NULL,
61fb3183	374	AVFMT_NOFILE,
03cfe134 MN	375	};
	376
	377	static AVInputFormat image2pipe_iformat = {
	378	"image2pipe",
	379	"piped image2 sequence",
	380	sizeof(VideoData),
	381	NULL, /* no probe */
	382	img_read_header,
	383	img_read_packet,
	384	img_read_close,
	385	NULL,
	386	};
	387
	388
	389	/* output */
	390
	391	static AVOutputFormat image2_oformat = {
	392	"image2",
	393	"image2 sequence",
	394	"",
	395	"",
	396	sizeof(VideoData),
	397	CODEC_ID_NONE,
	398	CODEC_ID_MJPEG,
	399	img_write_header,
	400	img_write_packet,
	401	img_write_trailer,
61fb3183	402	AVFMT_NOFILE,
03cfe134 MN	403	};
	404
	405	static AVOutputFormat image2pipe_oformat = {
	406	"image2pipe",
	407	"piped image2 sequence",
	408	"",
	409	"",
	410	sizeof(VideoData),
	411	CODEC_ID_NONE,
	412	CODEC_ID_MJPEG,
	413	img_write_header,
	414	img_write_packet,
	415	img_write_trailer,
	416	};
	417
	418	int img2_init(void)
	419	{
	420	av_register_input_format(&image2_iformat);
	421	av_register_output_format(&image2_oformat);
	422
	423	av_register_input_format(&image2pipe_iformat);
	424	av_register_output_format(&image2pipe_oformat);
	425
	426	return 0;
	427	}