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/avassert.h"
25 #include "libavutil/avstring.h"
26 #include "libavutil/log.h"
27 #include "libavutil/opt.h"
28 #include "libavutil/pixdesc.h"
29 #include "libavutil/time_internal.h"
31 #include "avio_internal.h"
35 typedef struct VideoMuxData {
36 const AVClass *class; /**< Class for private options. */
39 int split_planes; /**< use independent file for each Y, U, V plane */
49 static int write_header(AVFormatContext *s)
51 VideoMuxData *img = s->priv_data;
52 AVStream *st = s->streams[0];
53 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(st->codec->pix_fmt);
54 const char *proto = avio_find_protocol_name(s->filename);
56 av_strlcpy(img->path, s->filename, sizeof(img->path));
59 if (s->oformat->flags & AVFMT_NOFILE)
64 if (st->codec->codec_id == AV_CODEC_ID_GIF) {
66 } else if (st->codec->codec_id == AV_CODEC_ID_RAWVIDEO) {
67 const char *str = strrchr(img->path, '.');
68 img->split_planes = str
69 && !av_strcasecmp(str + 1, "y")
72 &&(desc->flags & AV_PIX_FMT_FLAG_PLANAR)
73 && desc->nb_components >= 3;
76 img->use_rename = img->use_rename < 0 ? proto && !strcmp(proto, "file")
82 static int write_packet(AVFormatContext *s, AVPacket *pkt)
84 VideoMuxData *img = s->priv_data;
87 AVCodecContext *codec = s->streams[pkt->stream_index]->codec;
88 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(codec->pix_fmt);
94 av_strlcpy(filename, img->path, sizeof(filename));
95 } else if (img->use_strftime) {
97 struct tm *tm, tmpbuf;
99 tm = localtime_r(&now0, &tmpbuf);
100 if (!strftime(filename, sizeof(filename), img->path, tm)) {
101 av_log(s, AV_LOG_ERROR, "Could not get frame filename with strftime\n");
102 return AVERROR(EINVAL);
104 } else if (av_get_frame_filename(filename, sizeof(filename), img->path, img->img_number) < 0 &&
105 img->img_number > 1) {
106 av_log(s, AV_LOG_ERROR,
107 "Could not get frame filename number %d from pattern '%s' (either set updatefirst or use a pattern like %%03d within the filename pattern)\n",
108 img->img_number, img->path);
109 return AVERROR(EINVAL);
111 for (i = 0; i < 4; i++) {
112 snprintf(img->tmp[i], sizeof(img->tmp[i]), "%s.tmp", filename);
113 av_strlcpy(img->target[i], filename, sizeof(img->target[i]));
114 if (avio_open2(&pb[i], img->use_rename ? img->tmp[i] : filename, AVIO_FLAG_WRITE,
115 &s->interrupt_callback, NULL) < 0) {
116 av_log(s, AV_LOG_ERROR, "Could not open file : %s\n", img->use_rename ? img->tmp[i] : filename);
120 if (!img->split_planes || i+1 >= desc->nb_components)
122 filename[strlen(filename) - 1] = "UVAx"[i];
130 if (img->split_planes) {
131 int ysize = codec->width * codec->height;
132 int usize = AV_CEIL_RSHIFT(codec->width, desc->log2_chroma_w) * AV_CEIL_RSHIFT(codec->height, desc->log2_chroma_h);
133 if (desc->comp[0].depth >= 9) {
137 avio_write(pb[0], pkt->data , ysize);
138 avio_write(pb[1], pkt->data + ysize , usize);
139 avio_write(pb[2], pkt->data + ysize + usize, usize);
142 if (desc->nb_components > 3) {
143 avio_write(pb[3], pkt->data + ysize + 2*usize, ysize);
146 } else if (img->muxer) {
150 AVFormatContext *fmt = NULL;
152 av_assert0(!img->split_planes);
154 ret = avformat_alloc_output_context2(&fmt, NULL, img->muxer, s->filename);
157 st = avformat_new_stream(fmt, NULL);
159 avformat_free_context(fmt);
160 return AVERROR(ENOMEM);
162 st->id = pkt->stream_index;
165 if ((ret = av_copy_packet(&pkt2, pkt)) < 0 ||
166 (ret = av_dup_packet(&pkt2)) < 0 ||
167 (ret = avcodec_copy_context(st->codec, s->streams[0]->codec)) < 0 ||
168 (ret = avformat_write_header(fmt, NULL)) < 0 ||
169 (ret = av_interleaved_write_frame(fmt, &pkt2)) < 0 ||
170 (ret = av_write_trailer(fmt)) < 0) {
171 av_packet_unref(&pkt2);
172 avformat_free_context(fmt);
175 av_packet_unref(&pkt2);
176 avformat_free_context(fmt);
178 avio_write(pb[0], pkt->data, pkt->size);
183 for (i = 0; i < nb_renames; i++) {
184 ff_rename(img->tmp[i], img->target[i], s);
192 static int query_codec(enum AVCodecID id, int std_compliance)
195 for (i = 0; ff_img_tags[i].id != AV_CODEC_ID_NONE; i++)
196 if (ff_img_tags[i].id == id)
199 // Anything really can be stored in img2
200 return std_compliance < FF_COMPLIANCE_NORMAL;
203 #define OFFSET(x) offsetof(VideoMuxData, x)
204 #define ENC AV_OPT_FLAG_ENCODING_PARAM
205 static const AVOption muxoptions[] = {
206 { "updatefirst", "continuously overwrite one file", OFFSET(update), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, ENC },
207 { "update", "continuously overwrite one file", OFFSET(update), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, ENC },
208 { "start_number", "set first number in the sequence", OFFSET(img_number), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, INT_MAX, ENC },
209 { "strftime", "use strftime for filename", OFFSET(use_strftime), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, ENC },
210 { "atomic_writing", "write files atomically (using temporary files and renames)", OFFSET(use_rename), AV_OPT_TYPE_BOOL, { .i64 = -1 }, -1, 1, ENC },
214 #if CONFIG_IMAGE2_MUXER
215 static const AVClass img2mux_class = {
216 .class_name = "image2 muxer",
217 .item_name = av_default_item_name,
218 .option = muxoptions,
219 .version = LIBAVUTIL_VERSION_INT,
222 AVOutputFormat ff_image2_muxer = {
224 .long_name = NULL_IF_CONFIG_SMALL("image2 sequence"),
225 .extensions = "bmp,dpx,jls,jpeg,jpg,ljpg,pam,pbm,pcx,pgm,pgmyuv,png,"
226 "ppm,sgi,tga,tif,tiff,jp2,j2c,j2k,xwd,sun,ras,rs,im1,im8,im24,"
227 "sunras,xbm,xface,pix,y",
228 .priv_data_size = sizeof(VideoMuxData),
229 .video_codec = AV_CODEC_ID_MJPEG,
230 .write_header = write_header,
231 .write_packet = write_packet,
232 .query_codec = query_codec,
233 .flags = AVFMT_NOTIMESTAMPS | AVFMT_NODIMENSIONS | AVFMT_NOFILE,
234 .priv_class = &img2mux_class,
237 #if CONFIG_IMAGE2PIPE_MUXER
238 AVOutputFormat ff_image2pipe_muxer = {
239 .name = "image2pipe",
240 .long_name = NULL_IF_CONFIG_SMALL("piped image2 sequence"),
241 .priv_data_size = sizeof(VideoMuxData),
242 .video_codec = AV_CODEC_ID_MJPEG,
243 .write_header = write_header,
244 .write_packet = write_packet,
245 .query_codec = query_codec,
246 .flags = AVFMT_NOTIMESTAMPS | AVFMT_NODIMENSIONS