Function vulkan_encode_ffv1_init

libavcodec/ffv1enc_vulkan.c:982–1248

}

static av_cold int vulkan_encode_ffv1_init(AVCodecContext *avctx)
{
    int err;
    size_t maxsize, max_heap_size, max_host_size;
    VulkanEncodeFFv1Context *fv = avctx->priv_data;
    FFV1Context *f = &fv->ctx;

    if ((err = ff_ffv1_common_init(avctx, f)) < 0)
        return err;

    if (f->ac == 1)
        f->ac = AC_RANGE_CUSTOM_TAB;

    err = ff_ffv1_encode_setup_plane_info(avctx, avctx->sw_pix_fmt);
    if (err < 0)
        return err;

    /* Target version 3 by default */
    f->version = 3;

    err = ff_ffv1_encode_init(avctx);
    if (err < 0)
        return err;

    /* Rice coding did not support high bit depths */
    if (f->bits_per_raw_sample > (f->version > 3 ? 16 : 8)) {
        if (f->ac == AC_GOLOMB_RICE) {
            av_log(avctx, AV_LOG_WARNING, "bits_per_raw_sample > 8, "
                                          "forcing range coder\n");
            f->ac = AC_RANGE_CUSTOM_TAB;
        }
    }

    if (f->version < 4 && avctx->gop_size > 1) {
        av_log(avctx, AV_LOG_ERROR, "Using inter frames requires version 4 (-level 4)\n");
        return AVERROR_INVALIDDATA;
    }

    if (f->version == 4 && avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
        av_log(avctx, AV_LOG_ERROR, "Version 4 is experimental and requires -strict -2\n");
            return AVERROR_INVALIDDATA;
    }

    /* We target version 4.3 */
    if (f->version == 4 && f->micro_version > 4)
        f->micro_version = 3;

    f->num_h_slices = fv->num_h_slices;
    f->num_v_slices = fv->num_v_slices;

    if (f->num_h_slices <= 0 && f->num_v_slices <= 0) {
        if (avctx->slices) {
            err = ff_ffv1_encode_determine_slices(avctx);
            if (err < 0)
                return err;
        } else {
            f->num_h_slices = 32;
            f->num_v_slices = 32;