1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
|
/*
* Image format
* Copyright (c) 2000, 2001, 2002 Fabrice Bellard
* Copyright (c) 2004 Michael Niedermayer
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavutil/intreadwrite.h"
#include "libavutil/avassert.h"
#include "libavutil/avstring.h"
#include "libavutil/log.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "libavutil/time_internal.h"
#include "avformat.h"
#include "avio_internal.h"
#include "internal.h"
#include "img2.h"
typedef struct VideoMuxData {
const AVClass *class; /**< Class for private options. */
int img_number;
int is_pipe;
int split_planes; /**< use independent file for each Y, U, V plane */
char path[1024];
char tmp[4][1024];
char target[4][1024];
int update;
int use_strftime;
const char *muxer;
int use_rename;
} VideoMuxData;
static int write_header(AVFormatContext *s)
{
VideoMuxData *img = s->priv_data;
AVStream *st = s->streams[0];
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(st->codec->pix_fmt);
const char *proto = avio_find_protocol_name(s->filename);
av_strlcpy(img->path, s->filename, sizeof(img->path));
/* find format */
if (s->oformat->flags & AVFMT_NOFILE)
img->is_pipe = 0;
else
img->is_pipe = 1;
if (st->codec->codec_id == AV_CODEC_ID_GIF) {
img->muxer = "gif";
} else if (st->codec->codec_id == AV_CODEC_ID_RAWVIDEO) {
const char *str = strrchr(img->path, '.');
img->split_planes = str
&& !av_strcasecmp(str + 1, "y")
&& s->nb_streams == 1
&& desc
&&(desc->flags & AV_PIX_FMT_FLAG_PLANAR)
&& desc->nb_components >= 3;
}
img->use_rename = proto && !strcmp(proto, "file");
return 0;
}
static int write_packet(AVFormatContext *s, AVPacket *pkt)
{
VideoMuxData *img = s->priv_data;
AVIOContext *pb[4];
char filename[1024];
AVCodecContext *codec = s->streams[pkt->stream_index]->codec;
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(codec->pix_fmt);
int i;
int nb_renames = 0;
if (!img->is_pipe) {
if (img->update) {
av_strlcpy(filename, img->path, sizeof(filename));
} else if (img->use_strftime) {
time_t now0;
struct tm *tm, tmpbuf;
time(&now0);
tm = localtime_r(&now0, &tmpbuf);
if (!strftime(filename, sizeof(filename), img->path, tm)) {
av_log(s, AV_LOG_ERROR, "Could not get frame filename with strftime\n");
return AVERROR(EINVAL);
}
} else if (av_get_frame_filename(filename, sizeof(filename), img->path, img->img_number) < 0 &&
img->img_number > 1) {
av_log(s, AV_LOG_ERROR,
"Could not get frame filename number %d from pattern '%s' (either set updatefirst or use a pattern like %%03d within the filename pattern)\n",
img->img_number, img->path);
return AVERROR(EINVAL);
}
for (i = 0; i < 4; i++) {
snprintf(img->tmp[i], sizeof(img->tmp[i]), "%s.tmp", filename);
av_strlcpy(img->target[i], filename, sizeof(img->target[i]));
if (avio_open2(&pb[i], img->use_rename ? img->tmp[i] : filename, AVIO_FLAG_WRITE,
&s->interrupt_callback, NULL) < 0) {
av_log(s, AV_LOG_ERROR, "Could not open file : %s\n", img->use_rename ? img->tmp[i] : filename);
return AVERROR(EIO);
}
if (!img->split_planes || i+1 >= desc->nb_components)
break;
filename[strlen(filename) - 1] = "UVAx"[i];
}
if (img->use_rename)
nb_renames = i + 1;
} else {
pb[0] = s->pb;
}
if (img->split_planes) {
int ysize = codec->width * codec->height;
int usize = FF_CEIL_RSHIFT(codec->width, desc->log2_chroma_w) * FF_CEIL_RSHIFT(codec->height, desc->log2_chroma_h);
if (desc->comp[0].depth >= 9) {
ysize *= 2;
usize *= 2;
}
avio_write(pb[0], pkt->data , ysize);
avio_write(pb[1], pkt->data + ysize , usize);
avio_write(pb[2], pkt->data + ysize + usize, usize);
avio_closep(&pb[1]);
avio_closep(&pb[2]);
if (desc->nb_components > 3) {
avio_write(pb[3], pkt->data + ysize + 2*usize, ysize);
avio_closep(&pb[3]);
}
} else if (img->muxer) {
int ret;
AVStream *st;
AVPacket pkt2 = {0};
AVFormatContext *fmt = NULL;
av_assert0(!img->split_planes);
ret = avformat_alloc_output_context2(&fmt, NULL, img->muxer, s->filename);
if (ret < 0)
return ret;
st = avformat_new_stream(fmt, NULL);
if (!st) {
avformat_free_context(fmt);
return AVERROR(ENOMEM);
}
st->id = pkt->stream_index;
fmt->pb = pb[0];
if ((ret = av_copy_packet(&pkt2, pkt)) < 0 ||
(ret = av_dup_packet(&pkt2)) < 0 ||
(ret = avcodec_copy_context(st->codec, s->streams[0]->codec)) < 0 ||
(ret = avformat_write_header(fmt, NULL)) < 0 ||
(ret = av_interleaved_write_frame(fmt, &pkt2)) < 0 ||
(ret = av_write_trailer(fmt)) < 0) {
av_packet_unref(&pkt2);
avformat_free_context(fmt);
return ret;
}
av_packet_unref(&pkt2);
avformat_free_context(fmt);
} else {
avio_write(pb[0], pkt->data, pkt->size);
}
avio_flush(pb[0]);
if (!img->is_pipe) {
avio_closep(&pb[0]);
for (i = 0; i < nb_renames; i++) {
ff_rename(img->tmp[i], img->target[i], s);
}
}
img->img_number++;
return 0;
}
static int query_codec(enum AVCodecID id, int std_compliance)
{
int i;
for (i = 0; ff_img_tags[i].id != AV_CODEC_ID_NONE; i++)
if (ff_img_tags[i].id == id)
return 1;
// Anything really can be stored in img2
return std_compliance < FF_COMPLIANCE_NORMAL;
}
#define OFFSET(x) offsetof(VideoMuxData, x)
#define ENC AV_OPT_FLAG_ENCODING_PARAM
static const AVOption muxoptions[] = {
{ "updatefirst", "continuously overwrite one file", OFFSET(update), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, ENC },
{ "update", "continuously overwrite one file", OFFSET(update), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, ENC },
{ "start_number", "set first number in the sequence", OFFSET(img_number), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, INT_MAX, ENC },
{ "strftime", "use strftime for filename", OFFSET(use_strftime), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, ENC },
{ NULL },
};
#if CONFIG_IMAGE2_MUXER
static const AVClass img2mux_class = {
.class_name = "image2 muxer",
.item_name = av_default_item_name,
.option = muxoptions,
.version = LIBAVUTIL_VERSION_INT,
};
AVOutputFormat ff_image2_muxer = {
.name = "image2",
.long_name = NULL_IF_CONFIG_SMALL("image2 sequence"),
.extensions = "bmp,dpx,jls,jpeg,jpg,ljpg,pam,pbm,pcx,pgm,pgmyuv,png,"
"ppm,sgi,tga,tif,tiff,jp2,j2c,j2k,xwd,sun,ras,rs,im1,im8,im24,"
"sunras,xbm,xface,pix,y",
.priv_data_size = sizeof(VideoMuxData),
.video_codec = AV_CODEC_ID_MJPEG,
.write_header = write_header,
.write_packet = write_packet,
.query_codec = query_codec,
.flags = AVFMT_NOTIMESTAMPS | AVFMT_NODIMENSIONS | AVFMT_NOFILE,
.priv_class = &img2mux_class,
};
#endif
#if CONFIG_IMAGE2PIPE_MUXER
AVOutputFormat ff_image2pipe_muxer = {
.name = "image2pipe",
.long_name = NULL_IF_CONFIG_SMALL("piped image2 sequence"),
.priv_data_size = sizeof(VideoMuxData),
.video_codec = AV_CODEC_ID_MJPEG,
.write_header = write_header,
.write_packet = write_packet,
.query_codec = query_codec,
.flags = AVFMT_NOTIMESTAMPS | AVFMT_NODIMENSIONS
};
#endif
|
