Function encode_init

libavcodec/exrenc.c:93–139

} EXRContext;

static av_cold int encode_init(AVCodecContext *avctx)
{
    EXRContext *s = avctx->priv_data;

    ff_init_float2half_tables(&s->f2h_tables);

    switch (avctx->pix_fmt) {
    case AV_PIX_FMT_GBRPF32:
        s->planes = 3;
        s->ch_names = bgr_chlist;
        s->ch_order = gbr_order;
        break;
    case AV_PIX_FMT_GBRAPF32:
        s->planes = 4;
        s->ch_names = abgr_chlist;
        s->ch_order = gbra_order;
        break;
    case AV_PIX_FMT_GRAYF32:
        s->planes = 1;
        s->ch_names = y_chlist;
        s->ch_order = y_order;
        break;
    default:
        av_assert0(0);
    }

    switch (s->compression) {
    case EXR_RAW:
    case EXR_RLE:
    case EXR_ZIP1:
        s->scanline_height = 1;
        s->nb_scanlines = avctx->height;
        break;
    case EXR_ZIP16:
        s->scanline_height = 16;
        s->nb_scanlines = (avctx->height + s->scanline_height - 1) / s->scanline_height;
        break;
    default:
        av_assert0(0);
    }

    s->scanline = av_calloc(s->nb_scanlines, sizeof(*s->scanline));
    if (!s->scanline)
        return AVERROR(ENOMEM);

    return 0;
}

static av_cold int encode_close(AVCodecContext *avctx)
{