mirror of
https://git.videolan.org/git/ffmpeg.git
synced 2024-08-14 21:35:06 +02:00
217 lines
7.8 KiB
C
217 lines
7.8 KiB
C
/*
|
|
* 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 "avformat.h"
|
|
#include "avio_internal.h"
|
|
#include "internal.h"
|
|
|
|
typedef struct {
|
|
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];
|
|
int update;
|
|
int use_strftime;
|
|
const char *muxer;
|
|
} 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);
|
|
|
|
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;
|
|
}
|
|
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;
|
|
|
|
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;
|
|
time(&now0);
|
|
tm = localtime(&now0);
|
|
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++) {
|
|
if (avio_open2(&pb[i], filename, AVIO_FLAG_WRITE,
|
|
&s->interrupt_callback, NULL) < 0) {
|
|
av_log(s, AV_LOG_ERROR, "Could not open file : %s\n", filename);
|
|
return AVERROR(EIO);
|
|
}
|
|
|
|
if (!img->split_planes || i+1 >= desc->nb_components)
|
|
break;
|
|
filename[strlen(filename) - 1] = "UVAx"[i];
|
|
}
|
|
} 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_minus1 >= 8) {
|
|
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_close(pb[1]);
|
|
avio_close(pb[2]);
|
|
if (desc->nb_components > 3) {
|
|
avio_write(pb[3], pkt->data + ysize + 2*usize, ysize);
|
|
avio_close(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_free_packet(&pkt2);
|
|
avformat_free_context(fmt);
|
|
return ret;
|
|
}
|
|
av_free_packet(&pkt2);
|
|
avformat_free_context(fmt);
|
|
} else {
|
|
avio_write(pb[0], pkt->data, pkt->size);
|
|
}
|
|
avio_flush(pb[0]);
|
|
if (!img->is_pipe) {
|
|
avio_close(pb[0]);
|
|
}
|
|
|
|
img->img_number++;
|
|
return 0;
|
|
}
|
|
|
|
#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_INT, { .i64 = 0 }, 0, 1, ENC },
|
|
{ "update", "continuously overwrite one file", OFFSET(update), AV_OPT_TYPE_INT, { .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_INT, { .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,webp,xbm,xface,pix,y",
|
|
.priv_data_size = sizeof(VideoMuxData),
|
|
.video_codec = AV_CODEC_ID_MJPEG,
|
|
.write_header = write_header,
|
|
.write_packet = write_packet,
|
|
.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,
|
|
.flags = AVFMT_NOTIMESTAMPS | AVFMT_NODIMENSIONS
|
|
};
|
|
#endif
|