3 * Copyright (c) 2009 Tobias Bindhammer
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 #include "libavcodec/avcodec.h"
23 #include "libavcodec/bytestream.h"
27 static int a64_write_header(AVFormatContext *s)
29 AVCodecParameters *par = s->streams[0]->codecpar;
34 0x00, //charset_lifetime (multi only)
38 if (par->extradata_size < 4) {
39 av_log(s, AV_LOG_ERROR, "Missing extradata\n");
40 return AVERROR_INVALIDDATA;
43 switch (par->codec_id) {
44 case AV_CODEC_ID_A64_MULTI:
46 header[3] = AV_RB32(par->extradata+0);
49 case AV_CODEC_ID_A64_MULTI5:
51 header[3] = AV_RB32(par->extradata+0);
55 return AVERROR_INVALIDDATA;
57 avio_write(s->pb, header, 2);
61 AVOutputFormat ff_a64_muxer = {
63 .long_name = NULL_IF_CONFIG_SMALL("a64 - video for Commodore 64"),
64 .extensions = "a64, A64",
65 .video_codec = AV_CODEC_ID_A64_MULTI,
66 .write_header = a64_write_header,
67 .write_packet = ff_raw_write_packet,