3 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
4 * Copyright (c) 2004 Michael Niedermayer
6 * This file is part of FFmpeg.
8 * FFmpeg 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 * FFmpeg 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 FFmpeg; 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"
26 #include "libavutil/opt.h"
27 #include "libavutil/pixdesc.h"
29 #include "avio_internal.h"
31 #include "libavutil/opt.h"
34 const AVClass *class; /**< Class for private options. */
37 int split_planes; /**< use independent file for each Y, U, V plane */
43 static int write_header(AVFormatContext *s)
45 VideoMuxData *img = s->priv_data;
46 AVStream *st = s->streams[0];
47 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(st->codec->pix_fmt);
50 av_strlcpy(img->path, s->filename, sizeof(img->path));
53 if (s->oformat->flags & AVFMT_NOFILE)
58 str = strrchr(img->path, '.');
59 img->split_planes = str
60 && !av_strcasecmp(str + 1, "y")
62 && st->codec->codec_id == AV_CODEC_ID_RAWVIDEO
64 &&(desc->flags & AV_PIX_FMT_FLAG_PLANAR)
65 && desc->nb_components >= 3;
69 static int write_packet(AVFormatContext *s, AVPacket *pkt)
71 VideoMuxData *img = s->priv_data;
74 AVCodecContext *codec = s->streams[pkt->stream_index]->codec;
75 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(codec->pix_fmt);
80 av_strlcpy(filename, img->path, sizeof(filename));
81 } else if (img->use_strftime) {
85 tm = localtime(&now0);
86 if (!strftime(filename, sizeof(filename), img->path, tm)) {
87 av_log(s, AV_LOG_ERROR, "Could not get frame filename with strftime\n");
88 return AVERROR(EINVAL);
90 } else if (av_get_frame_filename(filename, sizeof(filename), img->path, img->img_number) < 0 &&
91 img->img_number > 1) {
92 av_log(s, AV_LOG_ERROR,
93 "Could not get frame filename number %d from pattern '%s' (either set updatefirst or use a pattern like %%03d within the filename pattern)\n",
94 img->img_number, img->path);
95 return AVERROR(EINVAL);
97 for (i = 0; i < 4; i++) {
98 if (avio_open2(&pb[i], filename, AVIO_FLAG_WRITE,
99 &s->interrupt_callback, NULL) < 0) {
100 av_log(s, AV_LOG_ERROR, "Could not open file : %s\n", filename);
104 if (!img->split_planes || i+1 >= desc->nb_components)
106 filename[strlen(filename) - 1] = ((int[]){'U','V','A','x'})[i];
112 if (img->split_planes) {
113 int ysize = codec->width * codec->height;
114 int usize = FF_CEIL_RSHIFT(codec->width, desc->log2_chroma_w) * FF_CEIL_RSHIFT(codec->height, desc->log2_chroma_h);
115 if (desc->comp[0].depth_minus1 >= 8) {
119 avio_write(pb[0], pkt->data , ysize);
120 avio_write(pb[1], pkt->data + ysize , usize);
121 avio_write(pb[2], pkt->data + ysize + usize, usize);
124 if (desc->nb_components > 3) {
125 avio_write(pb[3], pkt->data + ysize + 2*usize, ysize);
129 avio_write(pb[0], pkt->data, pkt->size);
140 #define OFFSET(x) offsetof(VideoMuxData, x)
141 #define ENC AV_OPT_FLAG_ENCODING_PARAM
142 static const AVOption muxoptions[] = {
143 { "updatefirst", "continuously overwrite one file", OFFSET(update), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, ENC },
144 { "update", "continuously overwrite one file", OFFSET(update), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, ENC },
145 { "start_number", "set first number in the sequence", OFFSET(img_number), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, INT_MAX, ENC },
146 { "strftime", "use strftime for filename", OFFSET(use_strftime), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, ENC },
150 #if CONFIG_IMAGE2_MUXER
151 static const AVClass img2mux_class = {
152 .class_name = "image2 muxer",
153 .item_name = av_default_item_name,
154 .option = muxoptions,
155 .version = LIBAVUTIL_VERSION_INT,
158 AVOutputFormat ff_image2_muxer = {
160 .long_name = NULL_IF_CONFIG_SMALL("image2 sequence"),
161 .extensions = "bmp,dpx,jls,jpeg,jpg,ljpg,pam,pbm,pcx,pgm,pgmyuv,png,"
162 "ppm,sgi,tga,tif,tiff,jp2,j2c,j2k,xwd,sun,ras,rs,im1,im8,im24,"
164 .priv_data_size = sizeof(VideoMuxData),
165 .video_codec = AV_CODEC_ID_MJPEG,
166 .write_header = write_header,
167 .write_packet = write_packet,
168 .flags = AVFMT_NOTIMESTAMPS | AVFMT_NODIMENSIONS | AVFMT_NOFILE,
169 .priv_class = &img2mux_class,
172 #if CONFIG_IMAGE2PIPE_MUXER
173 AVOutputFormat ff_image2pipe_muxer = {
174 .name = "image2pipe",
175 .long_name = NULL_IF_CONFIG_SMALL("piped image2 sequence"),
176 .priv_data_size = sizeof(VideoMuxData),
177 .video_codec = AV_CODEC_ID_MJPEG,
178 .write_header = write_header,
179 .write_packet = write_packet,
180 .flags = AVFMT_NOTIMESTAMPS | AVFMT_NODIMENSIONS