/*
* Image format
- * Copyright (c) 2000, 2001, 2002 Fabrice Bellard.
+ * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
* Copyright (c) 2004 Michael Niedermayer
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * 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.
*
- * FFmpeg is distributed in the hope that it will be useful,
+ * 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 FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#include "avformat.h"
-typedef struct {
- int img_first;
- int img_last;
- int img_number;
- int img_count;
- int is_pipe;
- char path[1024];
-} VideoData;
+#include "libavutil/avstring.h"
+#include "internal.h"
typedef struct {
enum CodecID id;
{ 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_GIF , "gif"},
{ CODEC_ID_TARGA , "tga"},
{ CODEC_ID_TIFF , "tiff"},
- {0, NULL}
-};
-
-static int sizes[][2] = {
- { 640, 480 },
- { 720, 480 },
- { 720, 576 },
- { 352, 288 },
- { 352, 240 },
- { 160, 128 },
- { 512, 384 },
- { 640, 352 },
- { 640, 240 },
+ { 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_XBM , "xbm"},
+ { CODEC_ID_XWD , "xwd"},
+ { CODEC_ID_NONE , NULL}
};
-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, '.');
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;
- }
+ if (!av_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;
- 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)
+enum CodecID ff_guess_image2_codec(const char *filename)
{
- if (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 -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->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_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 (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_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;
-}
-
-#ifdef CONFIG_MUXERS
-/******************************************************/
-/* 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 (av_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;
-}
-
-#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
projects / ffmpeg / blobdiff