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 FFmpeg.
7 *
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.
12 *
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.
17 *
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
21 */
22
23 #include "libavutil/intreadwrite.h"
24 #include "libavutil/avassert.h"
25 #include "libavutil/avstring.h"
26 #include "libavutil/dict.h"
27 #include "libavutil/log.h"
28 #include "libavutil/opt.h"
29 #include "libavutil/pixdesc.h"
30 #include "libavutil/time_internal.h"
31 #include "avformat.h"
32 #include "avio_internal.h"
33 #include "internal.h"
34 #include "img2.h"
35
36 typedef struct VideoMuxData {
37 const AVClass *class; /**< Class for private options. */
38 int img_number;
39 int split_planes; /**< use independent file for each Y, U, V plane */
40 char path[1024];
41 char tmp[4][1024];
42 char target[4][1024];
43 int update;
44 int use_strftime;
45 int frame_pts;
46 const char *muxer;
47 int use_rename;
48 AVDictionary *protocol_opts;
49 } VideoMuxData;
50
write_header(AVFormatContext * s)51 static int write_header(AVFormatContext *s)
52 {
53 VideoMuxData *img = s->priv_data;
54 AVStream *st = s->streams[0];
55 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(st->codecpar->format);
56
57 av_strlcpy(img->path, s->url, sizeof(img->path));
58
59 if (st->codecpar->codec_id == AV_CODEC_ID_GIF) {
60 img->muxer = "gif";
61 } else if (st->codecpar->codec_id == AV_CODEC_ID_FITS) {
62 img->muxer = "fits";
63 } else if (st->codecpar->codec_id == AV_CODEC_ID_RAWVIDEO) {
64 const char *str = strrchr(img->path, '.');
65 img->split_planes = str
66 && !av_strcasecmp(str + 1, "y")
67 && s->nb_streams == 1
68 && desc
69 &&(desc->flags & AV_PIX_FMT_FLAG_PLANAR)
70 && desc->nb_components >= 3;
71 }
72
73 return 0;
74 }
75
write_muxed_file(AVFormatContext * s,AVIOContext * pb,AVPacket * pkt)76 static int write_muxed_file(AVFormatContext *s, AVIOContext *pb, AVPacket *pkt)
77 {
78 VideoMuxData *img = s->priv_data;
79 AVCodecParameters *par = s->streams[pkt->stream_index]->codecpar;
80 AVStream *st;
81 AVPacket pkt2;
82 AVFormatContext *fmt = NULL;
83 int ret;
84
85 /* URL is not used directly as we are overriding the IO context later. */
86 ret = avformat_alloc_output_context2(&fmt, NULL, img->muxer, s->url);
87 if (ret < 0)
88 return ret;
89 st = avformat_new_stream(fmt, NULL);
90 if (!st) {
91 ret = AVERROR(ENOMEM);
92 goto out;
93 }
94 st->id = pkt->stream_index;
95
96 fmt->pb = pb;
97
98 ret = av_packet_ref(&pkt2, pkt);
99 if (ret < 0)
100 goto out;
101 pkt2.stream_index = 0;
102
103 if ((ret = avcodec_parameters_copy(st->codecpar, par)) < 0 ||
104 (ret = avformat_write_header(fmt, NULL)) < 0 ||
105 (ret = av_interleaved_write_frame(fmt, &pkt2)) < 0 ||
106 (ret = av_write_trailer(fmt))) {}
107
108 av_packet_unref(&pkt2);
109 out:
110 avformat_free_context(fmt);
111 return ret;
112 }
113
write_packet_pipe(AVFormatContext * s,AVPacket * pkt)114 static int write_packet_pipe(AVFormatContext *s, AVPacket *pkt)
115 {
116 VideoMuxData *img = s->priv_data;
117 if (img->muxer) {
118 int ret = write_muxed_file(s, s->pb, pkt);
119 if (ret < 0)
120 return ret;
121 } else {
122 avio_write(s->pb, pkt->data, pkt->size);
123 }
124 img->img_number++;
125 return 0;
126 }
127
write_packet(AVFormatContext * s,AVPacket * pkt)128 static int write_packet(AVFormatContext *s, AVPacket *pkt)
129 {
130 VideoMuxData *img = s->priv_data;
131 AVIOContext *pb[4] = {0};
132 char filename[1024];
133 AVCodecParameters *par = s->streams[pkt->stream_index]->codecpar;
134 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(par->format);
135 int ret, i;
136 int nb_renames = 0;
137 AVDictionary *options = NULL;
138
139 if (img->update) {
140 av_strlcpy(filename, img->path, sizeof(filename));
141 } else if (img->use_strftime) {
142 time_t now0;
143 struct tm *tm, tmpbuf;
144 time(&now0);
145 tm = localtime_r(&now0, &tmpbuf);
146 if (!strftime(filename, sizeof(filename), img->path, tm)) {
147 av_log(s, AV_LOG_ERROR, "Could not get frame filename with strftime\n");
148 return AVERROR(EINVAL);
149 }
150 } else if (img->frame_pts) {
151 if (av_get_frame_filename2(filename, sizeof(filename), img->path, pkt->pts, AV_FRAME_FILENAME_FLAGS_MULTIPLE) < 0) {
152 av_log(s, AV_LOG_ERROR, "Cannot write filename by pts of the frames.");
153 return AVERROR(EINVAL);
154 }
155 } else if (av_get_frame_filename2(filename, sizeof(filename), img->path,
156 img->img_number,
157 AV_FRAME_FILENAME_FLAGS_MULTIPLE) < 0 &&
158 img->img_number > 1) {
159 av_log(s, AV_LOG_ERROR,
160 "Could not get frame filename number %d from pattern '%s'. "
161 "Use '-frames:v 1' for a single image, or '-update' option, or use a pattern such as %%03d within the filename.\n",
162 img->img_number, img->path);
163 return AVERROR(EINVAL);
164 }
165 for (i = 0; i < 4; i++) {
166 av_dict_copy(&options, img->protocol_opts, 0);
167 snprintf(img->tmp[i], sizeof(img->tmp[i]), "%s.tmp", filename);
168 av_strlcpy(img->target[i], filename, sizeof(img->target[i]));
169 if (s->io_open(s, &pb[i], img->use_rename ? img->tmp[i] : filename, AVIO_FLAG_WRITE, &options) < 0) {
170 av_log(s, AV_LOG_ERROR, "Could not open file : %s\n", img->use_rename ? img->tmp[i] : filename);
171 ret = AVERROR(EIO);
172 goto fail;
173 }
174 if (options) {
175 av_log(s, AV_LOG_ERROR, "Could not recognize some protocol options\n");
176 ret = AVERROR(EINVAL);
177 goto fail;
178 }
179
180 if (!img->split_planes || i+1 >= desc->nb_components)
181 break;
182 filename[strlen(filename) - 1] = "UVAx"[i];
183 }
184 if (img->use_rename)
185 nb_renames = i + 1;
186
187 if (img->split_planes) {
188 int ysize = par->width * par->height;
189 int usize = AV_CEIL_RSHIFT(par->width, desc->log2_chroma_w) * AV_CEIL_RSHIFT(par->height, desc->log2_chroma_h);
190 if (desc->comp[0].depth >= 9) {
191 ysize *= 2;
192 usize *= 2;
193 }
194 avio_write(pb[0], pkt->data , ysize);
195 avio_write(pb[1], pkt->data + ysize , usize);
196 avio_write(pb[2], pkt->data + ysize + usize, usize);
197 ff_format_io_close(s, &pb[1]);
198 ff_format_io_close(s, &pb[2]);
199 if (desc->nb_components > 3) {
200 avio_write(pb[3], pkt->data + ysize + 2*usize, ysize);
201 ff_format_io_close(s, &pb[3]);
202 }
203 } else if (img->muxer) {
204 ret = write_muxed_file(s, pb[0], pkt);
205 if (ret < 0)
206 goto fail;
207 } else {
208 avio_write(pb[0], pkt->data, pkt->size);
209 }
210 avio_flush(pb[0]);
211 ff_format_io_close(s, &pb[0]);
212 for (i = 0; i < nb_renames; i++) {
213 int ret = ff_rename(img->tmp[i], img->target[i], s);
214 if (ret < 0)
215 return ret;
216 }
217
218 img->img_number++;
219 return 0;
220
221 fail:
222 av_dict_free(&options);
223 for (i = 0; i < FF_ARRAY_ELEMS(pb); i++)
224 if (pb[i])
225 ff_format_io_close(s, &pb[i]);
226 return ret;
227 }
228
query_codec(enum AVCodecID id,int std_compliance)229 static int query_codec(enum AVCodecID id, int std_compliance)
230 {
231 int i;
232 for (i = 0; ff_img_tags[i].id != AV_CODEC_ID_NONE; i++)
233 if (ff_img_tags[i].id == id)
234 return 1;
235
236 // Anything really can be stored in img2
237 return std_compliance < FF_COMPLIANCE_NORMAL;
238 }
239
240 #define OFFSET(x) offsetof(VideoMuxData, x)
241 #define ENC AV_OPT_FLAG_ENCODING_PARAM
242 static const AVOption muxoptions[] = {
243 { "update", "continuously overwrite one file", OFFSET(update), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, ENC },
244 { "start_number", "set first number in the sequence", OFFSET(img_number), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, INT_MAX, ENC },
245 { "strftime", "use strftime for filename", OFFSET(use_strftime), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, ENC },
246 { "frame_pts", "use current frame pts for filename", OFFSET(frame_pts), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, ENC },
247 { "atomic_writing", "write files atomically (using temporary files and renames)", OFFSET(use_rename), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, ENC },
248 { "protocol_opts", "specify protocol options for the opened files", OFFSET(protocol_opts), AV_OPT_TYPE_DICT, {0}, 0, 0, ENC },
249 { NULL },
250 };
251
252 #if CONFIG_IMAGE2_MUXER
253 static const AVClass img2mux_class = {
254 .class_name = "image2 muxer",
255 .item_name = av_default_item_name,
256 .option = muxoptions,
257 .version = LIBAVUTIL_VERSION_INT,
258 };
259
260 AVOutputFormat ff_image2_muxer = {
261 .name = "image2",
262 .long_name = NULL_IF_CONFIG_SMALL("image2 sequence"),
263 .extensions = "bmp,dpx,exr,jls,jpeg,jpg,ljpg,pam,pbm,pcx,pfm,pgm,pgmyuv,png,"
264 "ppm,sgi,tga,tif,tiff,jp2,j2c,j2k,xwd,sun,ras,rs,im1,im8,im24,"
265 "sunras,xbm,xface,pix,y",
266 .priv_data_size = sizeof(VideoMuxData),
267 .video_codec = AV_CODEC_ID_MJPEG,
268 .write_header = write_header,
269 .write_packet = write_packet,
270 .query_codec = query_codec,
271 .flags = AVFMT_NOTIMESTAMPS | AVFMT_NODIMENSIONS | AVFMT_NOFILE,
272 .priv_class = &img2mux_class,
273 };
274 #endif
275 #if CONFIG_IMAGE2PIPE_MUXER
276 AVOutputFormat ff_image2pipe_muxer = {
277 .name = "image2pipe",
278 .long_name = NULL_IF_CONFIG_SMALL("piped image2 sequence"),
279 .priv_data_size = sizeof(VideoMuxData),
280 .video_codec = AV_CODEC_ID_MJPEG,
281 .write_header = write_header,
282 .write_packet = write_packet_pipe,
283 .query_codec = query_codec,
284 .flags = AVFMT_NOTIMESTAMPS | AVFMT_NODIMENSIONS
285 };
286 #endif
287