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/*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVCODEC_VULKAN_DECODE_H
#define AVCODEC_VULKAN_DECODE_H
#include "codec_id.h"
#include "decode.h"
#include "hwaccel_internal.h"
#include "internal.h"
#include "vulkan_video.h"
typedef struct FFVulkanDecodeDescriptor {
enum AVCodecID codec_id;
FFVulkanExtensions decode_extension;
VkVideoCodecOperationFlagBitsKHR decode_op;
VkExtensionProperties ext_props;
} FFVulkanDecodeDescriptor;
typedef struct FFVulkanDecodeProfileData {
VkVideoDecodeH264ProfileInfoKHR h264_profile;
VkVideoDecodeH265ProfileInfoKHR h265_profile;
VkVideoDecodeAV1ProfileInfoKHR av1_profile;
VkVideoDecodeUsageInfoKHR usage;
VkVideoProfileInfoKHR profile;
VkVideoProfileListInfoKHR profile_list;
} FFVulkanDecodeProfileData;
typedef struct FFVulkanDecodeShared {
FFVulkanContext s;
FFVkVideoCommon common;
FFVkQueueFamilyCtx qf;
VkVideoCapabilitiesKHR caps;
VkVideoDecodeCapabilitiesKHR dec_caps;
AVBufferRef *dpb_hwfc_ref; /* Only used for dedicated_dpb */
AVFrame *layered_frame; /* Only used for layered_dpb */
VkImageView layered_view;
VkImageAspectFlags layered_aspect;
VkVideoSessionParametersKHR empty_session_params;
VkSamplerYcbcrConversion yuv_sampler;
} FFVulkanDecodeShared;
typedef struct FFVulkanDecodeContext {
FFVulkanDecodeShared *shared_ctx;
AVBufferRef *session_params;
FFVkExecPool exec_pool;
int dedicated_dpb; /* Oddity #1 - separate DPB images */
int layered_dpb; /* Madness #1 - layered DPB images */
int external_fg; /* Oddity #2 - hardware can't apply film grain */
uint32_t frame_id_alloc_mask; /* For AV1 only */
/* Thread-local state below */
struct HEVCHeaderSet *hevc_headers;
size_t hevc_headers_size;
uint32_t *slice_off;
unsigned int slice_off_max;
} FFVulkanDecodeContext;
typedef struct FFVulkanDecodePicture {
AVFrame *dpb_frame; /* Only used for out-of-place decoding. */
VkImageView img_view_ref; /* Image representation view (reference) */
VkImageView img_view_out; /* Image representation view (output-only) */
VkImageView img_view_dest; /* Set to img_view_out if no layered refs are used */
VkImageAspectFlags img_aspect; /* Image plane mask bits */
VkImageAspectFlags img_aspect_ref; /* Only used for out-of-place decoding */
VkSemaphore sem;
uint64_t sem_value;
/* Current picture */
VkVideoPictureResourceInfoKHR ref;
VkVideoReferenceSlotInfoKHR ref_slot;
/* Picture refs. H264 has the maximum number of refs (36) of any supported codec. */
VkVideoPictureResourceInfoKHR refs [36];
VkVideoReferenceSlotInfoKHR ref_slots[36];
/* Main decoding struct */
VkVideoDecodeInfoKHR decode_info;
/* Slice data */
AVBufferRef *slices_buf;
size_t slices_size;
/* Vulkan functions needed for destruction, as no other context is guaranteed to exist */
PFN_vkWaitSemaphores wait_semaphores;
PFN_vkDestroyImageView destroy_image_view;
} FFVulkanDecodePicture;
/**
* Initialize decoder.
*/
int ff_vk_decode_init(AVCodecContext *avctx);
/**
* Synchronize the contexts between 2 threads.
*/
int ff_vk_update_thread_context(AVCodecContext *dst, const AVCodecContext *src);
/**
* Initialize hw_frames_ctx with the parameters needed to decode the stream
* using the parameters from avctx.
*
* NOTE: if avctx->internal->hwaccel_priv_data exists, will partially initialize
* the context.
*/
int ff_vk_frame_params(AVCodecContext *avctx, AVBufferRef *hw_frames_ctx);
/**
* Removes current session parameters to recreate them
*/
int ff_vk_params_invalidate(AVCodecContext *avctx, int t, const uint8_t *b, uint32_t s);
/**
* Prepare a frame, creates the image view, and sets up the dpb fields.
*/
int ff_vk_decode_prepare_frame(FFVulkanDecodeContext *dec, AVFrame *pic,
FFVulkanDecodePicture *vkpic, int is_current,
int alloc_dpb);
/**
* Add slice data to frame.
*/
int ff_vk_decode_add_slice(AVCodecContext *avctx, FFVulkanDecodePicture *vp,
const uint8_t *data, size_t size, int add_startcode,
uint32_t *nb_slices, const uint32_t **offsets);
/**
* Decode a frame.
*/
int ff_vk_decode_frame(AVCodecContext *avctx,
AVFrame *pic, FFVulkanDecodePicture *vp,
AVFrame *rpic[], FFVulkanDecodePicture *rvkp[]);
/**
* Free a frame and its state.
*/
void ff_vk_decode_free_frame(AVHWDeviceContext *dev_ctx, FFVulkanDecodePicture *vp);
/**
* Get an FFVkBuffer suitable for decoding from.
*/
int ff_vk_get_decode_buffer(FFVulkanDecodeContext *ctx, AVBufferRef **buf,
void *create_pNext, size_t size);
/**
* Create VkVideoSessionParametersKHR wrapped in an AVBufferRef.
*/
int ff_vk_decode_create_params(AVBufferRef **par_ref, void *logctx, FFVulkanDecodeShared *ctx,
const VkVideoSessionParametersCreateInfoKHR *session_params_create);
/**
* Flush decoder.
*/
void ff_vk_decode_flush(AVCodecContext *avctx);
/**
* Free decoder.
*/
int ff_vk_decode_uninit(AVCodecContext *avctx);
#endif /* AVCODEC_VULKAN_DECODE_H */
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