Function a64_write_header

libavformat/a64.c:29–61

#include "rawenc.h"

static int a64_write_header(AVFormatContext *s)
{
    AVCodecParameters *par = s->streams[0]->codecpar;
    uint8_t header[5] = {
        0x00, //load
        0x40, //address
        0x00, //mode
        0x00, //charset_lifetime (multi only)
        0x00  //fps in 50/fps;
    };

    if (par->extradata_size < 4) {
        av_log(s, AV_LOG_ERROR, "Missing extradata\n");
        return AVERROR_INVALIDDATA;
    }

    switch (par->codec_id) {
    case AV_CODEC_ID_A64_MULTI:
        header[2] = 0x00;
        header[3] = AV_RB32(par->extradata+0);
        header[4] = 2;
        break;
    case AV_CODEC_ID_A64_MULTI5:
        header[2] = 0x01;
        header[3] = AV_RB32(par->extradata+0);
        header[4] = 3;
        break;
    default:
        return AVERROR_INVALIDDATA;
    }
    avio_write(s->pb, header, 2);
    return 0;
}

const FFOutputFormat ff_a64_muxer = {
    .p.name         = "a64",