3 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
4 * Copyright (c) 2004 Michael Niedermayer
6 * This file is part of Libav.
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.
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.
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
23 #include "libavutil/intreadwrite.h"
24 #include "libavutil/avstring.h"
25 #include "libavutil/log.h"
27 #include "avio_internal.h"
29 #include "libavutil/opt.h"
31 typedef struct RenameIO {
37 typedef struct VideoMuxData {
38 const AVClass *class; /**< Class for private options. */
45 static int write_header(AVFormatContext *s)
47 VideoMuxData *img = s->priv_data;
49 av_strlcpy(img->path, s->filename, sizeof(img->path));
52 if (s->oformat->flags & AVFMT_NOFILE)
60 static int open_temporary(AVFormatContext *s, RenameIO *out, const char *filename)
62 snprintf(out->tmp, sizeof(out->tmp), "%s.tmp", filename);
63 av_strlcpy(out->filename, filename, sizeof(out->filename));
64 if (s->io_open(s, &out->pb, out->tmp, AVIO_FLAG_WRITE, NULL) < 0) {
65 av_log(s, AV_LOG_ERROR, "Could not open file : %s\n", out->tmp);
72 static void close_and_rename(AVFormatContext *s, RenameIO *out)
74 ff_format_io_close(s, &out->pb);
75 ff_rename(out->tmp, out->filename);
78 static int write_packet(AVFormatContext *s, AVPacket *pkt)
80 VideoMuxData *img = s->priv_data;
83 AVCodecParameters *par = s->streams[pkt->stream_index]->codecpar;
88 av_strlcpy(filename, img->path, sizeof(filename));
89 } else if (av_get_frame_filename(filename, sizeof(filename), img->path, img->img_number) < 0 &&
90 img->img_number > 1) {
91 av_log(s, AV_LOG_ERROR,
92 "Could not get frame filename number %d from pattern '%s'\n",
93 img->img_number, img->path);
96 for (i = 0; i < 3; i++) {
97 int ret = open_temporary(s, &out[i], filename);
100 if (par->codec_id != AV_CODEC_ID_RAWVIDEO)
102 filename[strlen(filename) - 1] = 'U' + i;
108 if (par->codec_id == AV_CODEC_ID_RAWVIDEO) {
109 int ysize = par->width * par->height;
110 avio_write(out[0].pb, pkt->data, ysize);
111 avio_write(out[1].pb, pkt->data + ysize, (pkt->size - ysize) / 2);
112 avio_write(out[2].pb, pkt->data + ysize + (pkt->size - ysize) / 2, (pkt->size - ysize) / 2);
113 close_and_rename(s, &out[1]);
114 close_and_rename(s, &out[2]);
116 if (ff_guess_image2_codec(s->filename) == AV_CODEC_ID_JPEG2000) {
117 AVStream *st = s->streams[0];
118 if (st->codecpar->extradata_size > 8 &&
119 AV_RL32(st->codecpar->extradata + 4) == MKTAG('j', 'p', '2', 'h')) {
121 AV_RL32(pkt->data + 4) != MKTAG('j', 'p', '2', 'c'))
123 avio_wb32(out[0].pb, 12);
124 ffio_wfourcc(out[0].pb, "jP ");
125 avio_wb32(out[0].pb, 0x0D0A870A); // signature
126 avio_wb32(out[0].pb, 20);
127 ffio_wfourcc(out[0].pb, "ftyp");
128 ffio_wfourcc(out[0].pb, "jp2 ");
129 avio_wb32(out[0].pb, 0);
130 ffio_wfourcc(out[0].pb, "jp2 ");
131 avio_write(out[0].pb, st->codecpar->extradata, st->codecpar->extradata_size);
132 } else if (pkt->size < 8 ||
133 (!st->codecpar->extradata_size &&
134 AV_RL32(pkt->data + 4) != MKTAG('j', 'P', ' ', ' '))) { // signature
136 av_log(s, AV_LOG_ERROR, "malformed JPEG 2000 codestream\n");
140 avio_write(out[0].pb, pkt->data, pkt->size);
142 avio_flush(out[0].pb);
144 close_and_rename(s, &out[0]);
151 #define OFFSET(x) offsetof(VideoMuxData, x)
152 #define ENC AV_OPT_FLAG_ENCODING_PARAM
153 static const AVOption muxoptions[] = {
154 { "start_number", "first number in the sequence", OFFSET(img_number), AV_OPT_TYPE_INT, { .i64 = 1 }, 1, INT_MAX, ENC },
155 { "update", "continuously overwrite one file", OFFSET(update), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, ENC },
159 #if CONFIG_IMAGE2_MUXER
160 static const AVClass img2mux_class = {
161 .class_name = "image2 muxer",
162 .item_name = av_default_item_name,
163 .option = muxoptions,
164 .version = LIBAVUTIL_VERSION_INT,
167 AVOutputFormat ff_image2_muxer = {
169 .long_name = NULL_IF_CONFIG_SMALL("image2 sequence"),
170 .extensions = "bmp,dpx,jpeg,jpg,ljpg,pam,pbm,pcx,pgm,pgmyuv,png,"
171 "ppm,sgi,tga,tif,tiff,jp2,xwd,sun,ras,rs,im1,im8,im24,"
172 "sunras,webp,xbm,j2c,pix",
173 .priv_data_size = sizeof(VideoMuxData),
174 .video_codec = AV_CODEC_ID_MJPEG,
175 .write_header = write_header,
176 .write_packet = write_packet,
177 .flags = AVFMT_NOTIMESTAMPS | AVFMT_NODIMENSIONS | AVFMT_NOFILE,
178 .priv_class = &img2mux_class,
181 #if CONFIG_IMAGE2PIPE_MUXER
182 AVOutputFormat ff_image2pipe_muxer = {
183 .name = "image2pipe",
184 .long_name = NULL_IF_CONFIG_SMALL("piped image2 sequence"),
185 .priv_data_size = sizeof(VideoMuxData),
186 .video_codec = AV_CODEC_ID_MJPEG,
187 .write_header = write_header,
188 .write_packet = write_packet,
189 .flags = AVFMT_NOTIMESTAMPS | AVFMT_NODIMENSIONS