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https://github.com/FFmpeg/FFmpeg.git
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f276a490f0
* commit '3f7fd59d151a2773f0e2e93e56b6b13ec6e5334b': avformat: fix typo in avformat_close_input mp3enc: write Xing TOC mp3enc: support MPEG-2 and MPEG-2.5 in Xing header. mp3enc: downgrade some errors in writing Xing frame to warnings lavf: flush the output AVIOContext in av_write_trailer(). lavf: cosmetics, reformat av_write_trailer(). avio: flush the internal buffer in avio_close() Enhance doc on asyncts audiofilter cmdutils: avoid setting data pointers to invalid values in alloc_buffer() libavcodec: remove av_destruct_packet_nofree() Conflicts: libavcodec/avpacket.c libavformat/mp3enc.c libavformat/nutenc.c libavformat/utils.c libavformat/version.h tests/ref/lavf/voc tests/ref/lavf/voc_s16 Merged-by: Michael Niedermayer <michaelni@gmx.at>
85 lines
2.4 KiB
C
85 lines
2.4 KiB
C
/*
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* Adobe Filmstrip muxer
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* Copyright (c) 2010 Peter Ross
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file
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* Adobe Filmstrip muxer
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*/
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#include "libavutil/intreadwrite.h"
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#include "avformat.h"
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#define RAND_TAG MKBETAG('R','a','n','d')
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typedef struct {
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int nb_frames;
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} FilmstripMuxContext;
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static int write_header(AVFormatContext *s)
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{
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if (s->streams[0]->codec->pix_fmt != PIX_FMT_RGBA) {
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av_log(s, AV_LOG_ERROR, "only PIX_FMT_RGBA is supported\n");
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return AVERROR_INVALIDDATA;
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}
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return 0;
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}
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static int write_packet(AVFormatContext *s, AVPacket *pkt)
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{
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FilmstripMuxContext *film = s->priv_data;
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avio_write(s->pb, pkt->data, pkt->size);
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film->nb_frames++;
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return 0;
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}
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static int write_trailer(AVFormatContext *s)
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{
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FilmstripMuxContext *film = s->priv_data;
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AVIOContext *pb = s->pb;
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AVStream *st = s->streams[0];
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int i;
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avio_wb32(pb, RAND_TAG);
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avio_wb32(pb, film->nb_frames);
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avio_wb16(pb, 0); // packing method
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avio_wb16(pb, 0); // reserved
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avio_wb16(pb, st->codec->width);
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avio_wb16(pb, st->codec->height);
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avio_wb16(pb, 0); // leading
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avio_wb16(pb, 1/av_q2d(st->codec->time_base));
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for (i = 0; i < 16; i++)
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avio_w8(pb, 0x00); // reserved
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return 0;
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}
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AVOutputFormat ff_filmstrip_muxer = {
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.name = "filmstrip",
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.long_name = NULL_IF_CONFIG_SMALL("Adobe Filmstrip"),
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.extensions = "flm",
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.priv_data_size = sizeof(FilmstripMuxContext),
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.audio_codec = AV_CODEC_ID_NONE,
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.video_codec = AV_CODEC_ID_RAWVIDEO,
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.write_header = write_header,
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.write_packet = write_packet,
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.write_trailer = write_trailer,
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};
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