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 const AVClass
*class; /**< Class for private options. */
38 int split_planes
; /**< use independent file for each Y, U, V plane */
45 static int write_header(AVFormatContext
*s
)
47 VideoMuxData
*img
= s
->priv_data
;
48 AVStream
*st
= s
->streams
[0];
49 const AVPixFmtDescriptor
*desc
= av_pix_fmt_desc_get(st
->codec
->pix_fmt
);
51 av_strlcpy(img
->path
, s
->filename
, sizeof(img
->path
));
54 if (s
->oformat
->flags
& AVFMT_NOFILE
)
59 if (st
->codec
->codec_id
== AV_CODEC_ID_GIF
) {
61 } else if (st
->codec
->codec_id
== AV_CODEC_ID_RAWVIDEO
) {
62 const char *str
= strrchr(img
->path
, '.');
63 img
->split_planes
= str
64 && !av_strcasecmp(str
+ 1, "y")
67 &&(desc
->flags
& AV_PIX_FMT_FLAG_PLANAR
)
68 && desc
->nb_components
>= 3;
73 static int write_packet(AVFormatContext
*s
, AVPacket
*pkt
)
75 VideoMuxData
*img
= s
->priv_data
;
78 AVCodecContext
*codec
= s
->streams
[pkt
->stream_index
]->codec
;
79 const AVPixFmtDescriptor
*desc
= av_pix_fmt_desc_get(codec
->pix_fmt
);
84 av_strlcpy(filename
, img
->path
, sizeof(filename
));
85 } else if (img
->use_strftime
) {
87 struct tm
*tm
, tmpbuf
;
89 tm
= localtime_r(&now0
, &tmpbuf
);
90 if (!strftime(filename
, sizeof(filename
), img
->path
, tm
)) {
91 av_log(s
, AV_LOG_ERROR
, "Could not get frame filename with strftime\n");
92 return AVERROR(EINVAL
);
94 } else if (av_get_frame_filename(filename
, sizeof(filename
), img
->path
, img
->img_number
) < 0 &&
95 img
->img_number
> 1) {
96 av_log(s
, AV_LOG_ERROR
,
97 "Could not get frame filename number %d from pattern '%s' (either set updatefirst or use a pattern like %%03d within the filename pattern)\n",
98 img
->img_number
, img
->path
);
99 return AVERROR(EINVAL
);
101 for (i
= 0; i
< 4; i
++) {
102 if (avio_open2(&pb
[i
], filename
, AVIO_FLAG_WRITE
,
103 &s
->interrupt_callback
, NULL
) < 0) {
104 av_log(s
, AV_LOG_ERROR
, "Could not open file : %s\n", filename
);
108 if (!img
->split_planes
|| i
+1 >= desc
->nb_components
)
110 filename
[strlen(filename
) - 1] = "UVAx"[i
];
116 if (img
->split_planes
) {
117 int ysize
= codec
->width
* codec
->height
;
118 int usize
= FF_CEIL_RSHIFT(codec
->width
, desc
->log2_chroma_w
) * FF_CEIL_RSHIFT(codec
->height
, desc
->log2_chroma_h
);
119 if (desc
->comp
[0].depth_minus1
>= 8) {
123 avio_write(pb
[0], pkt
->data
, ysize
);
124 avio_write(pb
[1], pkt
->data
+ ysize
, usize
);
125 avio_write(pb
[2], pkt
->data
+ ysize
+ usize
, usize
);
128 if (desc
->nb_components
> 3) {
129 avio_write(pb
[3], pkt
->data
+ ysize
+ 2*usize
, ysize
);
132 } else if (img
->muxer
) {
136 AVFormatContext
*fmt
= NULL
;
138 av_assert0(!img
->split_planes
);
140 ret
= avformat_alloc_output_context2(&fmt
, NULL
, img
->muxer
, s
->filename
);
143 st
= avformat_new_stream(fmt
, NULL
);
145 avformat_free_context(fmt
);
146 return AVERROR(ENOMEM
);
148 st
->id
= pkt
->stream_index
;
151 if ((ret
= av_copy_packet(&pkt2
, pkt
)) < 0 ||
152 (ret
= av_dup_packet(&pkt2
)) < 0 ||
153 (ret
= avcodec_copy_context(st
->codec
, s
->streams
[0]->codec
)) < 0 ||
154 (ret
= avformat_write_header(fmt
, NULL
)) < 0 ||
155 (ret
= av_interleaved_write_frame(fmt
, &pkt2
)) < 0 ||
156 (ret
= av_write_trailer(fmt
)) < 0) {
157 av_free_packet(&pkt2
);
158 avformat_free_context(fmt
);
161 av_free_packet(&pkt2
);
162 avformat_free_context(fmt
);
164 avio_write(pb
[0], pkt
->data
, pkt
->size
);
175 #define OFFSET(x) offsetof(VideoMuxData, x)
176 #define ENC AV_OPT_FLAG_ENCODING_PARAM
177 static const AVOption muxoptions
[] = {
178 { "updatefirst", "continuously overwrite one file", OFFSET(update
), AV_OPT_TYPE_INT
, { .i64
= 0 }, 0, 1, ENC
},
179 { "update", "continuously overwrite one file", OFFSET(update
), AV_OPT_TYPE_INT
, { .i64
= 0 }, 0, 1, ENC
},
180 { "start_number", "set first number in the sequence", OFFSET(img_number
), AV_OPT_TYPE_INT
, { .i64
= 1 }, 0, INT_MAX
, ENC
},
181 { "strftime", "use strftime for filename", OFFSET(use_strftime
), AV_OPT_TYPE_INT
, { .i64
= 0 }, 0, 1, ENC
},
185 #if CONFIG_IMAGE2_MUXER
186 static const AVClass img2mux_class
= {
187 .class_name
= "image2 muxer",
188 .item_name
= av_default_item_name
,
189 .option
= muxoptions
,
190 .version
= LIBAVUTIL_VERSION_INT
,
193 AVOutputFormat ff_image2_muxer
= {
195 .long_name
= NULL_IF_CONFIG_SMALL("image2 sequence"),
196 .extensions
= "bmp,dpx,jls,jpeg,jpg,ljpg,pam,pbm,pcx,pgm,pgmyuv,png,"
197 "ppm,sgi,tga,tif,tiff,jp2,j2c,j2k,xwd,sun,ras,rs,im1,im8,im24,"
198 "sunras,xbm,xface,pix,y",
199 .priv_data_size
= sizeof(VideoMuxData
),
200 .video_codec
= AV_CODEC_ID_MJPEG
,
201 .write_header
= write_header
,
202 .write_packet
= write_packet
,
203 .flags
= AVFMT_NOTIMESTAMPS
| AVFMT_NODIMENSIONS
| AVFMT_NOFILE
,
204 .priv_class
= &img2mux_class
,
207 #if CONFIG_IMAGE2PIPE_MUXER
208 AVOutputFormat ff_image2pipe_muxer
= {
209 .name
= "image2pipe",
210 .long_name
= NULL_IF_CONFIG_SMALL("piped image2 sequence"),
211 .priv_data_size
= sizeof(VideoMuxData
),
212 .video_codec
= AV_CODEC_ID_MJPEG
,
213 .write_header
= write_header
,
214 .write_packet
= write_packet
,
215 .flags
= AVFMT_NOTIMESTAMPS
| AVFMT_NODIMENSIONS