Function ff_vk_decode_frame

libavcodec/vulkan_decode.c:470–674

}

int ff_vk_decode_frame(AVCodecContext *avctx,
                       AVFrame *pic,    FFVulkanDecodePicture *vp,
                       AVFrame *rpic[], FFVulkanDecodePicture *rvkp[])
{
    int err;
    VkResult ret;
    VkCommandBuffer cmd_buf;
    FFVkBuffer *sd_buf;

    FFVulkanDecodeContext *dec = avctx->internal->hwaccel_priv_data;
    FFVulkanDecodeShared *ctx = dec->shared_ctx;
    FFVulkanFunctions *vk = &ctx->s.vkfn;

    /* Output */
    AVVkFrame *vkf = (AVVkFrame *)pic->buf[0]->data;

    /* Quirks */
    const int layered_dpb = ctx->common.layered_dpb;

    VkVideoBeginCodingInfoKHR decode_start = {
        .sType = VK_STRUCTURE_TYPE_VIDEO_BEGIN_CODING_INFO_KHR,
        .videoSession = ctx->common.session,
        .videoSessionParameters = dec->session_params ?
                                  *((VkVideoSessionParametersKHR *)dec->session_params->data) :
                                  VK_NULL_HANDLE,
        .referenceSlotCount = vp->decode_info.referenceSlotCount,
        .pReferenceSlots = vp->decode_info.pReferenceSlots,
    };
    VkVideoEndCodingInfoKHR decode_end = {
        .sType = VK_STRUCTURE_TYPE_VIDEO_END_CODING_INFO_KHR,
    };

    VkImageMemoryBarrier2 img_bar[37];
    int nb_img_bar = 0;
    size_t data_size = FFALIGN(vp->slices_size,
                               ctx->caps.minBitstreamBufferSizeAlignment);

    FFVkExecContext *exec = ff_vk_exec_get(&ctx->s, &ctx->exec_pool);

    /* The current decoding reference has to be bound as an inactive reference */
    VkVideoReferenceSlotInfoKHR *cur_vk_ref;
    cur_vk_ref = (void *)&decode_start.pReferenceSlots[decode_start.referenceSlotCount];
    cur_vk_ref[0] = vp->ref_slot;
    cur_vk_ref[0].slotIndex = -1;
    decode_start.referenceSlotCount++;

    sd_buf = (FFVkBuffer *)vp->slices_buf->data;

    /* Flush if needed */
    if (!(sd_buf->flags & VK_MEMORY_PROPERTY_HOST_COHERENT_BIT)) {
        VkMappedMemoryRange flush_buf = {
            .sType = VK_STRUCTURE_TYPE_MAPPED_MEMORY_RANGE,
            .memory = sd_buf->mem,
            .offset = 0,
            .size = FFALIGN(vp->slices_size,
                            ctx->s.props.properties.limits.nonCoherentAtomSize),
        };