libavformat/img2enc.c - manifest_repos/ffmpeg - Git at Google

 /*
  * 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/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"

 typedef struct VideoMuxData {
     const AVClass *class;  /**< Class for private options. */
     int img_number;
     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;
     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);

     av_strlcpy(img->path, s->url, sizeof(img->path));

     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_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_muxed_file(AVFormatContext *s, AVIOContext *pb, AVPacket *pkt)
 {
     VideoMuxData *img = s->priv_data;
     AVCodecParameters *par = s->streams[pkt->stream_index]->codecpar;
     AVStream *st;
     AVPacket pkt2;
     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_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, 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 (img->frame_pts) {
         if (av_get_frame_filename2(filename, sizeof(filename), img->path, 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), img->path,
                                       img->img_number,
                                       AV_FRAME_FILENAME_FLAGS_MULTIPLE) < 0 &&
                img->img_number > 1) {
         av_log(s, AV_LOG_ERROR,
                "Could not get frame filename number %d from pattern '%s'. "
                "Use '-frames:v 1' for a single image, or '-update' option, or use a pattern such as %%03d within the filename.\n",
                img->img_number, img->path);
         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;
         }
         avio_write(pb[0], pkt->data                , ysize);
         avio_write(pb[1], pkt->data + ysize        , usize);
         avio_write(pb[2], pkt->data + ysize + usize, usize);
         ff_format_io_close(s, &pb[1]);
         ff_format_io_close(s, &pb[2]);
         if (desc->nb_components > 3) {
             avio_write(pb[3], pkt->data + ysize + 2*usize, ysize);
             ff_format_io_close(s, &pb[3]);
         }
     } else if (img->muxer) {
         ret = write_muxed_file(s, pb[0], pkt);
         if (ret < 0)
             goto fail;
     } else {
         avio_write(pb[0], pkt->data, pkt->size);
     }
     avio_flush(pb[0]);
     ff_format_io_close(s, &pb[0]);
     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(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,
 };

 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_pipe,
     .query_codec    = query_codec,
     .flags          = AVFMT_NOTIMESTAMPS | AVFMT_NODIMENSIONS
 };
 #endif
	/*
	* 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/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"

	typedef struct VideoMuxData {
	const AVClass class; /< Class for private options. /
	int img_number;
	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;
	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);

	av_strlcpy(img->path, s->url, sizeof(img->path));

	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_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_muxed_file(AVFormatContext s, AVIOContext pb, AVPacket *pkt)
	{
	VideoMuxData *img = s->priv_data;
	AVCodecParameters *par = s->streams[pkt->stream_index]->codecpar;
	AVStream *st;
	AVPacket pkt2;
	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_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, 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 (img->frame_pts) {
	if (av_get_frame_filename2(filename, sizeof(filename), img->path, 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), img->path,
	img->img_number,
	AV_FRAME_FILENAME_FLAGS_MULTIPLE) < 0 &&
	img->img_number > 1) {
	av_log(s, AV_LOG_ERROR,
	"Could not get frame filename number %d from pattern '%s'. "
	"Use '-frames:v 1' for a single image, or '-update' option, or use a pattern such as %%03d within the filename.\n",
	img->img_number, img->path);
	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;
	}
	avio_write(pb[0], pkt->data , ysize);
	avio_write(pb[1], pkt->data + ysize , usize);
	avio_write(pb[2], pkt->data + ysize + usize, usize);
	ff_format_io_close(s, &pb[1]);
	ff_format_io_close(s, &pb[2]);
	if (desc->nb_components > 3) {
	avio_write(pb[3], pkt->data + ysize + 2*usize, ysize);
	ff_format_io_close(s, &pb[3]);
	}
	} else if (img->muxer) {
	ret = write_muxed_file(s, pb[0], pkt);
	if (ret < 0)
	goto fail;
	} else {
	avio_write(pb[0], pkt->data, pkt->size);
	}
	avio_flush(pb[0]);
	ff_format_io_close(s, &pb[0]);
	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(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,
	};

	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_pipe,
	.query_codec = query_codec,
	.flags = AVFMT_NOTIMESTAMPS \| AVFMT_NODIMENSIONS
	};
	#endif