Add Haivision SRT protocol
[libav.git] / libavformat / a64.c
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1/*
2 * a64 muxer
3 * Copyright (c) 2009 Tobias Bindhammer
4 *
2912e87a 5 * This file is part of Libav.
901694f1 6 *
2912e87a 7 * Libav is free software; you can redistribute it and/or
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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.
11 *
2912e87a 12 * Libav is distributed in the hope that it will be useful,
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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.
16 *
17 * You should have received a copy of the GNU Lesser General Public
2912e87a 18 * License along with Libav; if not, write to the Free Software
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19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22#include "libavcodec/avcodec.h"
23#include "libavcodec/a64enc.h"
24#include "libavcodec/bytestream.h"
25#include "avformat.h"
f70381ab 26#include "rawenc.h"
9e906bb1 27
b1365649 28static int a64_write_header(AVFormatContext *s)
901694f1 29{
9200514a 30 AVCodecParameters *par = s->streams[0]->codecpar;
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31 uint8_t header[5] = {
32 0x00, //load
33 0x40, //address
34 0x00, //mode
35 0x00, //charset_lifetime (multi only)
36 0x00 //fps in 50/fps;
37 };
3ef6c526 38
9200514a 39 if (par->extradata_size < 4) {
3ef6c526 40 av_log(s, AV_LOG_ERROR, "Missing extradata\n");
0528226a 41 return AVERROR_INVALIDDATA;
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42 }
43
9200514a 44 switch (par->codec_id) {
36ef5369 45 case AV_CODEC_ID_A64_MULTI:
901694f1 46 header[2] = 0x00;
9200514a 47 header[3] = AV_RB32(par->extradata+0);
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48 header[4] = 2;
49 break;
36ef5369 50 case AV_CODEC_ID_A64_MULTI5:
901694f1 51 header[2] = 0x01;
9200514a 52 header[3] = AV_RB32(par->extradata+0);
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53 header[4] = 3;
54 break;
55 default:
0528226a 56 return AVERROR_INVALIDDATA;
901694f1 57 }
77eb5504 58 avio_write(s->pb, header, 2);
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59 return 0;
60}
61
c6610a21 62AVOutputFormat ff_a64_muxer = {
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63 .name = "a64",
64 .long_name = NULL_IF_CONFIG_SMALL("a64 - video for Commodore 64"),
65 .extensions = "a64, A64",
36ef5369 66 .video_codec = AV_CODEC_ID_A64_MULTI,
20234a4b 67 .write_header = a64_write_header,
f70381ab 68 .write_packet = ff_raw_write_packet,
901694f1 69};