Function vulkan_decode_bootstrap

libavcodec/vulkan_decode.c:730–769

}

static int vulkan_decode_bootstrap(AVCodecContext *avctx, AVBufferRef *frames_ref)
{
    int err;
    FFVulkanDecodeContext *dec = avctx->internal->hwaccel_priv_data;
    const FFVulkanDecodeDescriptor *vk_desc = get_codecdesc(avctx->codec_id);
    AVHWFramesContext *frames = (AVHWFramesContext *)frames_ref->data;
    AVHWDeviceContext *device = (AVHWDeviceContext *)frames->device_ref->data;
    AVVulkanDeviceContext *hwctx = device->hwctx;
    FFVulkanDecodeShared *ctx;

    if (dec->shared_ctx)
        return 0;

    dec->shared_ctx = av_refstruct_alloc_ext(sizeof(*ctx), 0, NULL,
                                             free_common);
    if (!dec->shared_ctx)
        return AVERROR(ENOMEM);

    ctx = dec->shared_ctx;

    ctx->s.extensions = ff_vk_extensions_to_mask(hwctx->enabled_dev_extensions,
                                                 hwctx->nb_enabled_dev_extensions);

    if (vk_desc->queue_flags & VK_QUEUE_VIDEO_DECODE_BIT_KHR) {
        if (!(ctx->s.extensions & FF_VK_EXT_VIDEO_DECODE_QUEUE)) {
            av_log(avctx, AV_LOG_ERROR, "Device does not support the %s extension!\n",
                   VK_KHR_VIDEO_DECODE_QUEUE_EXTENSION_NAME);
            av_refstruct_unref(&dec->shared_ctx);
            return AVERROR(ENOSYS);
        }
    }

    err = ff_vk_load_functions(device, &ctx->s.vkfn, ctx->s.extensions, 1, 1);
    if (err < 0) {
        av_refstruct_unref(&dec->shared_ctx);
        return err;
    }

    return 0;
}

static VkResult vulkan_setup_profile(AVCodecContext *avctx,
                                     FFVulkanDecodeProfileData *prof,