From 8992cb1d0d07edc33d274f6d7924ecdf6f83d994 Mon Sep 17 00:00:00 2001 From: Tim Redfern Date: Thu, 5 Sep 2013 17:57:22 +0100 Subject: making act segmenter --- ffmpeg/libavformat/a64.c | 62 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 62 insertions(+) create mode 100644 ffmpeg/libavformat/a64.c (limited to 'ffmpeg/libavformat/a64.c') diff --git a/ffmpeg/libavformat/a64.c b/ffmpeg/libavformat/a64.c new file mode 100644 index 0000000..786c75c --- /dev/null +++ b/ffmpeg/libavformat/a64.c @@ -0,0 +1,62 @@ +/* + * a64 muxer + * Copyright (c) 2009 Tobias Bindhammer + * + * 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 "libavcodec/avcodec.h" +#include "libavcodec/bytestream.h" +#include "avformat.h" +#include "rawenc.h" + +static int a64_write_header(struct AVFormatContext *s) +{ + AVCodecContext *avctx = s->streams[0]->codec; + uint8_t header[5] = { + 0x00, //load + 0x40, //address + 0x00, //mode + 0x00, //charset_lifetime (multi only) + 0x00 //fps in 50/fps; + }; + switch (avctx->codec->id) { + case AV_CODEC_ID_A64_MULTI: + header[2] = 0x00; + header[3] = AV_RB32(avctx->extradata+0); + header[4] = 2; + break; + case AV_CODEC_ID_A64_MULTI5: + header[2] = 0x01; + header[3] = AV_RB32(avctx->extradata+0); + header[4] = 3; + break; + default: + return AVERROR(EINVAL); + } + avio_write(s->pb, header, 2); + return 0; +} + +AVOutputFormat ff_a64_muxer = { + .name = "a64", + .long_name = NULL_IF_CONFIG_SMALL("a64 - video for Commodore 64"), + .extensions = "a64, A64", + .video_codec = AV_CODEC_ID_A64_MULTI, + .write_header = a64_write_header, + .write_packet = ff_raw_write_packet, +}; -- cgit v1.2.3