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FFmpeg/libavformat/img2enc.c
Andreas Rheinhardt 59c9dc82f4 avformat/avformat: Move AVOutputFormat internals out of public header
This commit does for AVOutputFormat what commit
20f9727018 did for AVCodec:
It adds a new type FFOutputFormat, moves all the internals
of AVOutputFormat to it and adds a now reduced AVOutputFormat
as first member.

This does not affect/improve extensibility of both public
or private fields for muxers (it is still a mess due to lavd).

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Signed-off-by: Anton Khirnov <anton@khirnov.net>
2023-02-09 15:24:15 +01:00

299 lines
11 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 "config_components.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/avstring.h"
#include "libavutil/dict.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"
#include "mux.h"
typedef struct VideoMuxData {
const AVClass *class; /**< Class for private options. */
int start_img_number;
int img_number;
int split_planes; /**< use independent file for each Y, U, V plane */
char tmp[4][1024];
char target[4][1024];
int update;
int use_strftime;
int frame_pts;
const char *muxer;
int use_rename;
AVDictionary *protocol_opts;
} 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->codecpar->format);
if (st->codecpar->codec_id == AV_CODEC_ID_GIF) {
img->muxer = "gif";
} else if (st->codecpar->codec_id == AV_CODEC_ID_FITS) {
img->muxer = "fits";
} else if (st->codecpar->codec_id == AV_CODEC_ID_AV1) {
img->muxer = "avif";
} else if (st->codecpar->codec_id == AV_CODEC_ID_RAWVIDEO) {
const char *str = strrchr(s->url, '.');
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->img_number = img->start_img_number;
return 0;
}
static int write_muxed_file(AVFormatContext *s, AVIOContext *pb, AVPacket *pkt)
{
VideoMuxData *img = s->priv_data;
AVCodecParameters *par = s->streams[pkt->stream_index]->codecpar;
AVStream *st;
AVPacket *const pkt2 = ffformatcontext(s)->pkt;
AVFormatContext *fmt = NULL;
int ret;
/* URL is not used directly as we are overriding the IO context later. */
ret = avformat_alloc_output_context2(&fmt, NULL, img->muxer, s->url);
if (ret < 0)
return ret;
st = avformat_new_stream(fmt, NULL);
if (!st) {
ret = AVERROR(ENOMEM);
goto out;
}
st->id = pkt->stream_index;
fmt->pb = pb;
ret = av_packet_ref(pkt2, pkt);
if (ret < 0)
goto out;
pkt2->stream_index = 0;
if ((ret = avcodec_parameters_copy(st->codecpar, par)) < 0 ||
(ret = avformat_write_header(fmt, NULL)) < 0 ||
(ret = av_interleaved_write_frame(fmt, pkt2)) < 0 ||
(ret = av_write_trailer(fmt))) {}
av_packet_unref(pkt2);
out:
avformat_free_context(fmt);
return ret;
}
static int write_packet_pipe(AVFormatContext *s, AVPacket *pkt)
{
VideoMuxData *img = s->priv_data;
if (img->muxer) {
int ret = write_muxed_file(s, s->pb, pkt);
if (ret < 0)
return ret;
} else {
avio_write(s->pb, pkt->data, pkt->size);
}
img->img_number++;
return 0;
}
static int write_and_close(AVFormatContext *s, AVIOContext **pb, const unsigned char *buf, int size)
{
avio_write(*pb, buf, size);
avio_flush(*pb);
return ff_format_io_close(s, pb);
}
static int write_packet(AVFormatContext *s, AVPacket *pkt)
{
VideoMuxData *img = s->priv_data;
AVIOContext *pb[4] = {0};
char filename[1024];
AVCodecParameters *par = s->streams[pkt->stream_index]->codecpar;
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(par->format);
int ret, i;
int nb_renames = 0;
AVDictionary *options = NULL;
if (img->update) {
av_strlcpy(filename, s->url, 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), s->url, tm)) {
av_log(s, AV_LOG_ERROR, "Could not get frame filename with strftime\n");
return AVERROR(EINVAL);
}
} else if (img->frame_pts) {
if (av_get_frame_filename2(filename, sizeof(filename), s->url, pkt->pts, AV_FRAME_FILENAME_FLAGS_MULTIPLE) < 0) {
av_log(s, AV_LOG_ERROR, "Cannot write filename by pts of the frames.");
return AVERROR(EINVAL);
}
} else if (av_get_frame_filename2(filename, sizeof(filename), s->url,
img->img_number,
AV_FRAME_FILENAME_FLAGS_MULTIPLE) < 0) {
if (img->img_number == img->start_img_number) {
av_log(s, AV_LOG_WARNING, "The specified filename '%s' does not contain an image sequence pattern or a pattern is invalid.\n", s->url);
av_log(s, AV_LOG_WARNING,
"Use a pattern such as %%03d for an image sequence or "
"use the -update option (with -frames:v 1 if needed) to write a single image.\n");
av_strlcpy(filename, s->url, sizeof(filename));
} else {
av_log(s, AV_LOG_ERROR, "Cannot write more than one file with the same name. Are you missing the -update option or a sequence pattern?\n");
return AVERROR(EINVAL);
}
}
for (i = 0; i < 4; i++) {
av_dict_copy(&options, img->protocol_opts, 0);
snprintf(img->tmp[i], sizeof(img->tmp[i]), "%s.tmp", filename);
av_strlcpy(img->target[i], filename, sizeof(img->target[i]));
if (s->io_open(s, &pb[i], img->use_rename ? img->tmp[i] : filename, AVIO_FLAG_WRITE, &options) < 0) {
av_log(s, AV_LOG_ERROR, "Could not open file : %s\n", img->use_rename ? img->tmp[i] : filename);
ret = AVERROR(EIO);
goto fail;
}
if (options) {
av_log(s, AV_LOG_ERROR, "Could not recognize some protocol options\n");
ret = AVERROR(EINVAL);
goto fail;
}
if (!img->split_planes || i+1 >= desc->nb_components)
break;
filename[strlen(filename) - 1] = "UVAx"[i];
}
if (img->use_rename)
nb_renames = i + 1;
if (img->split_planes) {
int ysize = par->width * par->height;
int usize = AV_CEIL_RSHIFT(par->width, desc->log2_chroma_w) * AV_CEIL_RSHIFT(par->height, desc->log2_chroma_h);
if (desc->comp[0].depth >= 9) {
ysize *= 2;
usize *= 2;
}
if ((ret = write_and_close(s, &pb[0], pkt->data , ysize)) < 0 ||
(ret = write_and_close(s, &pb[1], pkt->data + ysize , usize)) < 0 ||
(ret = write_and_close(s, &pb[2], pkt->data + ysize + usize, usize)) < 0)
goto fail;
if (desc->nb_components > 3)
ret = write_and_close(s, &pb[3], pkt->data + ysize + 2*usize, ysize);
} else if (img->muxer) {
if ((ret = write_muxed_file(s, pb[0], pkt)) < 0)
goto fail;
ret = ff_format_io_close(s, &pb[0]);
} else {
ret = write_and_close(s, &pb[0], pkt->data, pkt->size);
}
if (ret < 0)
goto fail;
for (i = 0; i < nb_renames; i++) {
int ret = ff_rename(img->tmp[i], img->target[i], s);
if (ret < 0)
return ret;
}
img->img_number++;
return 0;
fail:
av_dict_free(&options);
for (i = 0; i < FF_ARRAY_ELEMS(pb); i++)
if (pb[i])
ff_format_io_close(s, &pb[i]);
return ret;
}
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[] = {
{ "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(start_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 },
{ "frame_pts", "use current frame pts for filename", OFFSET(frame_pts), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, ENC },
{ "atomic_writing", "write files atomically (using temporary files and renames)", OFFSET(use_rename), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, ENC },
{ "protocol_opts", "specify protocol options for the opened files", OFFSET(protocol_opts), AV_OPT_TYPE_DICT, {0}, 0, 0, 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,
};
const FFOutputFormat ff_image2_muxer = {
.p.name = "image2",
.p.long_name = NULL_IF_CONFIG_SMALL("image2 sequence"),
.p.extensions = "bmp,dpx,exr,jls,jpeg,jpg,jxl,ljpg,pam,pbm,pcx,pfm,pgm,pgmyuv,phm,"
"png,ppm,sgi,tga,tif,tiff,jp2,j2c,j2k,xwd,sun,ras,rs,im1,im8,"
"im24,sunras,vbn,xbm,xface,pix,y,avif,qoi,hdr,wbmp",
.priv_data_size = sizeof(VideoMuxData),
.p.video_codec = AV_CODEC_ID_MJPEG,
.write_header = write_header,
.write_packet = write_packet,
.query_codec = query_codec,
.p.flags = AVFMT_NOTIMESTAMPS | AVFMT_NODIMENSIONS | AVFMT_NOFILE,
.p.priv_class = &img2mux_class,
};
#endif
#if CONFIG_IMAGE2PIPE_MUXER
const FFOutputFormat ff_image2pipe_muxer = {
.p.name = "image2pipe",
.p.long_name = NULL_IF_CONFIG_SMALL("piped image2 sequence"),
.priv_data_size = sizeof(VideoMuxData),
.p.video_codec = AV_CODEC_ID_MJPEG,
.write_header = write_header,
.write_packet = write_packet_pipe,
.query_codec = query_codec,
.p.flags = AVFMT_NOTIMESTAMPS | AVFMT_NODIMENSIONS
};
#endif