avcodec: add XBM encoder
[libav.git] / libavformat / img2enc.c
1 /*
2 * Image format
3 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
4 * Copyright (c) 2004 Michael Niedermayer
5 *
6 * This file is part of Libav.
7 *
8 * Libav is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
12 *
13 * Libav is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with Libav; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 */
22
23 #include "libavutil/intreadwrite.h"
24 #include "libavutil/avstring.h"
25 #include "libavutil/log.h"
26 #include "avformat.h"
27 #include "avio_internal.h"
28 #include "internal.h"
29
30 typedef struct {
31 int img_number;
32 int is_pipe;
33 char path[1024];
34 } VideoMuxData;
35
36 static int write_header(AVFormatContext *s)
37 {
38 VideoMuxData *img = s->priv_data;
39
40 img->img_number = 1;
41 av_strlcpy(img->path, s->filename, sizeof(img->path));
42
43 /* find format */
44 if (s->oformat->flags & AVFMT_NOFILE)
45 img->is_pipe = 0;
46 else
47 img->is_pipe = 1;
48
49 return 0;
50 }
51
52 static int write_packet(AVFormatContext *s, AVPacket *pkt)
53 {
54 VideoMuxData *img = s->priv_data;
55 AVIOContext *pb[3];
56 char filename[1024];
57 AVCodecContext *codec= s->streams[ pkt->stream_index ]->codec;
58 int i;
59
60 if (!img->is_pipe) {
61 if (av_get_frame_filename(filename, sizeof(filename),
62 img->path, img->img_number) < 0 && img->img_number>1) {
63 av_log(s, AV_LOG_ERROR,
64 "Could not get frame filename number %d from pattern '%s'\n",
65 img->img_number, img->path);
66 return AVERROR(EIO);
67 }
68 for(i=0; i<3; i++){
69 if (avio_open2(&pb[i], filename, AVIO_FLAG_WRITE,
70 &s->interrupt_callback, NULL) < 0) {
71 av_log(s, AV_LOG_ERROR, "Could not open file : %s\n",filename);
72 return AVERROR(EIO);
73 }
74
75 if(codec->codec_id != CODEC_ID_RAWVIDEO)
76 break;
77 filename[ strlen(filename) - 1 ]= 'U' + i;
78 }
79 } else {
80 pb[0] = s->pb;
81 }
82
83 if(codec->codec_id == CODEC_ID_RAWVIDEO){
84 int ysize = codec->width * codec->height;
85 avio_write(pb[0], pkt->data , ysize);
86 avio_write(pb[1], pkt->data + ysize, (pkt->size - ysize)/2);
87 avio_write(pb[2], pkt->data + ysize +(pkt->size - ysize)/2, (pkt->size - ysize)/2);
88 avio_flush(pb[1]);
89 avio_flush(pb[2]);
90 avio_close(pb[1]);
91 avio_close(pb[2]);
92 }else{
93 if(ff_guess_image2_codec(s->filename) == CODEC_ID_JPEG2000){
94 AVStream *st = s->streams[0];
95 if(st->codec->extradata_size > 8 &&
96 AV_RL32(st->codec->extradata+4) == MKTAG('j','p','2','h')){
97 if(pkt->size < 8 || AV_RL32(pkt->data+4) != MKTAG('j','p','2','c'))
98 goto error;
99 avio_wb32(pb[0], 12);
100 ffio_wfourcc(pb[0], "jP ");
101 avio_wb32(pb[0], 0x0D0A870A); // signature
102 avio_wb32(pb[0], 20);
103 ffio_wfourcc(pb[0], "ftyp");
104 ffio_wfourcc(pb[0], "jp2 ");
105 avio_wb32(pb[0], 0);
106 ffio_wfourcc(pb[0], "jp2 ");
107 avio_write(pb[0], st->codec->extradata, st->codec->extradata_size);
108 }else if(pkt->size < 8 ||
109 (!st->codec->extradata_size &&
110 AV_RL32(pkt->data+4) != MKTAG('j','P',' ',' '))){ // signature
111 error:
112 av_log(s, AV_LOG_ERROR, "malformed JPEG 2000 codestream\n");
113 return -1;
114 }
115 }
116 avio_write(pb[0], pkt->data, pkt->size);
117 }
118 avio_flush(pb[0]);
119 if (!img->is_pipe) {
120 avio_close(pb[0]);
121 }
122
123 img->img_number++;
124 return 0;
125 }
126
127 #if CONFIG_IMAGE2_MUXER
128 AVOutputFormat ff_image2_muxer = {
129 .name = "image2",
130 .long_name = NULL_IF_CONFIG_SMALL("image2 sequence"),
131 .extensions = "bmp,dpx,jpeg,jpg,ljpg,pam,pbm,pcx,pgm,pgmyuv,png,"
132 "ppm,sgi,tga,tif,tiff,jp2,xwd,sun,ras,rs,im1,im8,im24,"
133 "sunras,xbm",
134 .priv_data_size = sizeof(VideoMuxData),
135 .video_codec = CODEC_ID_MJPEG,
136 .write_header = write_header,
137 .write_packet = write_packet,
138 .flags = AVFMT_NOTIMESTAMPS | AVFMT_NODIMENSIONS | AVFMT_NOFILE
139 };
140 #endif
141 #if CONFIG_IMAGE2PIPE_MUXER
142 AVOutputFormat ff_image2pipe_muxer = {
143 .name = "image2pipe",
144 .long_name = NULL_IF_CONFIG_SMALL("piped image2 sequence"),
145 .priv_data_size = sizeof(VideoMuxData),
146 .video_codec = CODEC_ID_MJPEG,
147 .write_header = write_header,
148 .write_packet = write_packet,
149 .flags = AVFMT_NOTIMESTAMPS | AVFMT_NODIMENSIONS
150 };
151 #endif