Function ff_vulkan_encode_init

libavcodec/vulkan_encode.c:739–1068

}

av_cold int ff_vulkan_encode_init(AVCodecContext *avctx, FFVulkanEncodeContext *ctx,
                                  const FFVulkanEncodeDescriptor *vk_desc,
                                  const FFVulkanCodec *codec,
                                  void *codec_caps, void *quality_pnext)
{
    int i, err;
    VkResult ret;
    FFVulkanFunctions *vk = &ctx->s.vkfn;
    FFVulkanContext *s = &ctx->s;
    FFHWBaseEncodeContext *base_ctx = &ctx->base;

    const AVPixFmtDescriptor *desc;

    VkVideoFormatPropertiesKHR *ret_info;
    uint32_t nb_out_fmts = 0;
    const uint32_t feedback_flags = VK_VIDEO_ENCODE_FEEDBACK_BITSTREAM_BUFFER_OFFSET_BIT_KHR |
                                    VK_VIDEO_ENCODE_FEEDBACK_BITSTREAM_BYTES_WRITTEN_BIT_KHR;

    VkPhysicalDeviceVideoEncodeQualityLevelInfoKHR quality_info;

    VkQueryPoolVideoEncodeFeedbackCreateInfoKHR query_create;

    VkVideoSessionCreateInfoKHR session_create = {
        .sType = VK_STRUCTURE_TYPE_VIDEO_SESSION_CREATE_INFO_KHR,
    };
    VkPhysicalDeviceVideoFormatInfoKHR fmt_info = {
        .sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_VIDEO_FORMAT_INFO_KHR,
        .pNext = &ctx->profile_list,
    };

    if (!avctx->hw_frames_ctx) {
        av_log(avctx, AV_LOG_ERROR, "A hardware frames reference is "
               "required to associate the encoding device.\n");
        return AVERROR(EINVAL);
    }

    ctx->base.op = &vulkan_base_encode_ops;
    ctx->codec = codec;

    s->frames_ref = av_buffer_ref(avctx->hw_frames_ctx);
    s->frames = (AVHWFramesContext *)s->frames_ref->data;
    s->hwfc = s->frames->hwctx;

    s->device = (AVHWDeviceContext *)s->frames->device_ref->data;
    s->hwctx = s->device->hwctx;

    desc = av_pix_fmt_desc_get(avctx->sw_pix_fmt);
    if (!desc)
        return AVERROR(EINVAL);

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

    if (!(s->extensions & FF_VK_EXT_VIDEO_ENCODE_QUEUE)) {
        av_log(avctx, AV_LOG_ERROR, "Device does not support the %s extension!\n",
               VK_KHR_VIDEO_ENCODE_QUEUE_EXTENSION_NAME);
        return AVERROR(ENOSYS);
    } else if (!(s->extensions & FF_VK_EXT_VIDEO_MAINTENANCE_1)) {