[FFmpeg-devel] [PATCH v6 1/9] libavutil: add hwcontext_d3d12va and AV_PIX_FMT_D3D12

Wu, Tong1 tong1.wu at intel.com
Fri Aug 25 11:48:59 EEST 2023


V6 major changes
1. the way d3dlibs created, adding a load function. Added dlclose in free function.
2. Simplified the public sync API by only keeping av_d3d12va_wait_idle.
3. Wrapping data->[0], data[1], data[2] into one single structure.


>Subject: [PATCH v6 1/9] libavutil: add hwcontext_d3d12va and
>AV_PIX_FMT_D3D12
>
>From: Wu Jianhua <toqsxw at outlook.com>
>
>Signed-off-by: Wu Jianhua <toqsxw at outlook.com>
>Signed-off-by: Tong Wu <tong1.wu at intel.com>
>---
> configure                              |   5 +
> doc/APIchanges                         |   7 +
> libavutil/Makefile                     |   3 +
> libavutil/hwcontext.c                  |   4 +
> libavutil/hwcontext.h                  |   1 +
> libavutil/hwcontext_d3d12va.c          | 693 +++++++++++++++++++++++++
> libavutil/hwcontext_d3d12va.h          | 155 ++++++
> libavutil/hwcontext_d3d12va_internal.h |  59 +++
> libavutil/hwcontext_internal.h         |   1 +
> libavutil/pixdesc.c                    |   4 +
> libavutil/pixfmt.h                     |   7 +
> libavutil/tests/hwdevice.c             |   2 +
> libavutil/version.h                    |   2 +-
> 13 files changed, 942 insertions(+), 1 deletion(-)
> create mode 100644 libavutil/hwcontext_d3d12va.c
> create mode 100644 libavutil/hwcontext_d3d12va.h
> create mode 100644 libavutil/hwcontext_d3d12va_internal.h
>
>diff --git a/configure b/configure
>index 04bb9fe9dd..b74a668f87 100755
>--- a/configure
>+++ b/configure
>@@ -338,6 +338,7 @@ External library support:
>   --disable-cuda-llvm      disable CUDA compilation using clang [autodetect]
>   --disable-cuvid          disable Nvidia CUVID support [autodetect]
>   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code
>[autodetect]
>+  --disable-d3d12va        disable Microsoft Direct3D 12 video acceleration code
>[autodetect]
>   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code
>[autodetect]
>   --disable-ffnvcodec      disable dynamically linked Nvidia code [autodetect]
>   --enable-libdrm          enable DRM code (Linux) [no]
>@@ -1926,6 +1927,7 @@ HWACCEL_AUTODETECT_LIBRARY_LIST="
>     cuda_llvm
>     cuvid
>     d3d11va
>+    d3d12va
>     dxva2
>     ffnvcodec
>     nvdec
>@@ -3053,6 +3055,7 @@ crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
> cuda_deps="ffnvcodec"
> cuvid_deps="ffnvcodec"
> d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
>+d3d12va_deps="dxva_h ID3D12Device ID3D12VideoDecoder"
> dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
> ffnvcodec_deps_any="libdl LoadLibrary"
> mediacodec_deps="android"
>@@ -6546,6 +6549,8 @@ check_type "windows.h dxgi1_2.h" "IDXGIOutput1"
> check_type "windows.h dxgi1_5.h" "IDXGIOutput5"
> check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
> check_type "windows.h d3d11.h" "ID3D11VideoContext"
>+check_type "windows.h d3d12.h" "ID3D12Device"
>+check_type "windows.h d3d12video.h" "ID3D12VideoDecoder"
> check_type "windows.h" "DPI_AWARENESS_CONTEXT" -
>D_WIN32_WINNT=0x0A00
> check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -
>D_WIN32_WINNT=0x0602
> check_func_headers mfapi.h MFCreateAlignedMemoryBuffer -lmfplat
>diff --git a/doc/APIchanges b/doc/APIchanges
>index ad1efe708d..37ce29323d 100644
>--- a/doc/APIchanges
>+++ b/doc/APIchanges
>@@ -2,6 +2,13 @@ The last version increases of all libraries were on 2023-02-
>09
>
> API changes, most recent first:
>
>+2023-07-xx - xxxxxxxxxx - lavu 58.18.100 - pixfmt.h hwcontext.h
>hwcontext_d3d12va.h
>+  Add AV_HWDEVICE_TYPE_D3D12VA and AV_PIX_FMT_D3D12.
>+  Add AVD3D12VADeviceContext, AVD3D12VASyncContext, AVD3D12VAFrame
>and
>+  AVD3D12VAFramesContext.
>+  Add av_d3d12va_map_sw_to_hw_format, av_d3d12va_sync_context_alloc,
>+  av_d3d12va_sync_context_free, av_d3d12va_wait_idle.
>+
> 2023-08-18 - xxxxxxxxxx - lavu 58.17.100 - channel_layout.h
>   All AV_CHANNEL_LAYOUT_* macros are now compatible with C++ 17 and
>older.
>
>diff --git a/libavutil/Makefile b/libavutil/Makefile
>index 7828c94dc5..db318534eb 100644
>--- a/libavutil/Makefile
>+++ b/libavutil/Makefile
>@@ -41,6 +41,7 @@ HEADERS = adler32.h                                                     \
>           hwcontext.h                                                   \
>           hwcontext_cuda.h                                              \
>           hwcontext_d3d11va.h                                           \
>+          hwcontext_d3d12va.h                                           \
>           hwcontext_drm.h                                               \
>           hwcontext_dxva2.h                                             \
>           hwcontext_qsv.h                                               \
>@@ -188,6 +189,7 @@ OBJS = adler32.o                                                        \
>
> OBJS-$(CONFIG_CUDA)                     += hwcontext_cuda.o
> OBJS-$(CONFIG_D3D11VA)                  += hwcontext_d3d11va.o
>+OBJS-$(CONFIG_D3D12VA)                  += hwcontext_d3d12va.o
> OBJS-$(CONFIG_DXVA2)                    += hwcontext_dxva2.o
> OBJS-$(CONFIG_LIBDRM)                   += hwcontext_drm.o
> OBJS-$(CONFIG_MACOS_KPERF)              += macos_kperf.o
>@@ -211,6 +213,7 @@ SKIPHEADERS-$(HAVE_CUDA_H)             +=
>hwcontext_cuda.h
> SKIPHEADERS-$(CONFIG_CUDA)             += hwcontext_cuda_internal.h     \
>                                           cuda_check.h
> SKIPHEADERS-$(CONFIG_D3D11VA)          += hwcontext_d3d11va.h
>+SKIPHEADERS-$(CONFIG_D3D12VA)          += hwcontext_d3d12va.h
> SKIPHEADERS-$(CONFIG_DXVA2)            += hwcontext_dxva2.h
> SKIPHEADERS-$(CONFIG_QSV)              += hwcontext_qsv.h
> SKIPHEADERS-$(CONFIG_OPENCL)           += hwcontext_opencl.h
>diff --git a/libavutil/hwcontext.c b/libavutil/hwcontext.c
>index 3396598269..04070bc3c3 100644
>--- a/libavutil/hwcontext.c
>+++ b/libavutil/hwcontext.c
>@@ -36,6 +36,9 @@ static const HWContextType * const hw_table[] = {
> #if CONFIG_D3D11VA
>     &ff_hwcontext_type_d3d11va,
> #endif
>+#if CONFIG_D3D12VA
>+    &ff_hwcontext_type_d3d12va,
>+#endif
> #if CONFIG_LIBDRM
>     &ff_hwcontext_type_drm,
> #endif
>@@ -71,6 +74,7 @@ static const char *const hw_type_names[] = {
>     [AV_HWDEVICE_TYPE_DRM]    = "drm",
>     [AV_HWDEVICE_TYPE_DXVA2]  = "dxva2",
>     [AV_HWDEVICE_TYPE_D3D11VA] = "d3d11va",
>+    [AV_HWDEVICE_TYPE_D3D12VA] = "d3d12va",
>     [AV_HWDEVICE_TYPE_OPENCL] = "opencl",
>     [AV_HWDEVICE_TYPE_QSV]    = "qsv",
>     [AV_HWDEVICE_TYPE_VAAPI]  = "vaapi",
>diff --git a/libavutil/hwcontext.h b/libavutil/hwcontext.h
>index 7ff08c8608..2b33721a97 100644
>--- a/libavutil/hwcontext.h
>+++ b/libavutil/hwcontext.h
>@@ -37,6 +37,7 @@ enum AVHWDeviceType {
>     AV_HWDEVICE_TYPE_OPENCL,
>     AV_HWDEVICE_TYPE_MEDIACODEC,
>     AV_HWDEVICE_TYPE_VULKAN,
>+    AV_HWDEVICE_TYPE_D3D12VA,
> };
>
> typedef struct AVHWDeviceInternal AVHWDeviceInternal;
>diff --git a/libavutil/hwcontext_d3d12va.c b/libavutil/hwcontext_d3d12va.c
>new file mode 100644
>index 0000000000..bcb207c8d1
>--- /dev/null
>+++ b/libavutil/hwcontext_d3d12va.c
>@@ -0,0 +1,693 @@
>+/*
>+ * Direct3D 12 HW acceleration.
>+ *
>+ * copyright (c) 2022-2023 Wu Jianhua <toqsxw at outlook.com>
>+ *
>+ * 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
>+ */
>+
>+#include "config.h"
>+#include "common.h"
>+#include "hwcontext.h"
>+#include "hwcontext_internal.h"
>+#include "hwcontext_d3d12va_internal.h"
>+#include "hwcontext_d3d12va.h"
>+#include "imgutils.h"
>+#include "pixdesc.h"
>+#include "pixfmt.h"
>+#include "thread.h"
>+#include "compat/w32dlfcn.h"
>+#include <dxgi1_3.h>
>+
>+typedef HRESULT(WINAPI *PFN_CREATE_DXGI_FACTORY2)(UINT Flags, REFIID
>riid, void **ppFactory);
>+
>+typedef struct D3D12VAFramesContext {
>+    ID3D12Resource            *staging_buffer;
>+    ID3D12CommandQueue        *command_queue;
>+    ID3D12CommandAllocator    *command_allocator;
>+    ID3D12GraphicsCommandList *command_list;
>+    AVD3D12VASyncContext      *sync_ctx;
>+    int                        nb_surfaces;
>+    int                        nb_surfaces_used;
>+    DXGI_FORMAT                format;
>+    UINT                       luma_component_size;
>+} D3D12VAFramesContext;
>+
>+typedef struct D3D12VADevicePriv {
>+    HANDLE                        d3d12lib;
>+    HANDLE                        dxgilib;
>+    PFN_CREATE_DXGI_FACTORY2      create_dxgi_factory2;
>+    PFN_D3D12_CREATE_DEVICE       create_device;
>+    PFN_D3D12_GET_DEBUG_INTERFACE get_debug_interface;
>+} D3D12VADevicePriv;
>+
>+static const struct {
>+    DXGI_FORMAT d3d_format;
>+    enum AVPixelFormat pix_fmt;
>+} supported_formats[] = {
>+    { DXGI_FORMAT_NV12, AV_PIX_FMT_NV12 },
>+    { DXGI_FORMAT_P010, AV_PIX_FMT_P010 },
>+};
>+
>+DXGI_FORMAT av_d3d12va_map_sw_to_hw_format(enum AVPixelFormat
>pix_fmt)
>+{
>+    switch (pix_fmt) {
>+    case AV_PIX_FMT_NV12:return DXGI_FORMAT_NV12;
>+    case AV_PIX_FMT_P010:return DXGI_FORMAT_P010;
>+    default:             return DXGI_FORMAT_UNKNOWN;
>+    }
>+}
>+
>+int av_d3d12va_sync_context_alloc(AVD3D12VADeviceContext *ctx,
>AVD3D12VASyncContext **psync_ctx)
>+{
>+    AVD3D12VASyncContext *sync_ctx;
>+
>+    sync_ctx = av_mallocz(sizeof(AVD3D12VASyncContext));
>+    if (!sync_ctx)
>+        return AVERROR(ENOMEM);
>+
>+    DX_CHECK(ID3D12Device_CreateFence(ctx->device, sync_ctx->fence_value,
>D3D12_FENCE_FLAG_NONE, &IID_ID3D12Fence, &sync_ctx->fence));
>+
>+    sync_ctx->event = CreateEvent(NULL, FALSE, FALSE, NULL);
>+    if (!sync_ctx->event)
>+        goto fail;
>+
>+    *psync_ctx = sync_ctx;
>+
>+    return 0;
>+
>+fail:
>+    D3D12_OBJECT_RELEASE(sync_ctx->fence);
>+    av_freep(&sync_ctx);
>+    return AVERROR(EINVAL);
>+}
>+
>+void av_d3d12va_sync_context_free(AVD3D12VASyncContext **psync_ctx)
>+{
>+    AVD3D12VASyncContext *sync_ctx;
>+
>+    if (!psync_ctx || !*psync_ctx)
>+        return;
>+
>+    sync_ctx = *psync_ctx;
>+
>+    av_d3d12va_wait_idle(sync_ctx);
>+
>+    D3D12_OBJECT_RELEASE(sync_ctx->fence);
>+
>+    if (sync_ctx->event)
>+        CloseHandle(sync_ctx->event);
>+
>+    av_freep(psync_ctx);
>+}
>+
>+int av_d3d12va_wait_idle(AVD3D12VASyncContext *sync_ctx)
>+{
>+    uint64_t completion = ID3D12Fence_GetCompletedValue(sync_ctx->fence);
>+    if (completion < sync_ctx->fence_value) {
>+        if (FAILED(ID3D12Fence_SetEventOnCompletion(sync_ctx->fence,
>sync_ctx->fence_value, sync_ctx->event)))
>+            return AVERROR(EINVAL);
>+
>+        WaitForSingleObjectEx(sync_ctx->event, INFINITE, FALSE);
>+    }
>+
>+    return 0;
>+}
>+
>+static inline int d3d12va_wait_queue_idle(AVD3D12VASyncContext *sync_ctx,
>ID3D12CommandQueue *command_queue)
>+{
>+    DX_CHECK(ID3D12CommandQueue_Signal(command_queue, sync_ctx-
>>fence, ++sync_ctx->fence_value));
>+    return av_d3d12va_wait_idle(sync_ctx);
>+
>+fail:
>+    return AVERROR(EINVAL);
>+}
>+
>+static inline int create_resource(ID3D12Device *device, const
>D3D12_RESOURCE_DESC *desc, D3D12_RESOURCE_STATES states,
>ID3D12Resource **ppResource, int is_read_back)
>+{
>+    D3D12_HEAP_PROPERTIES props = {
>+        .Type                 = is_read_back ? D3D12_HEAP_TYPE_READBACK :
>D3D12_HEAP_TYPE_DEFAULT,
>+        .CPUPageProperty      = D3D12_CPU_PAGE_PROPERTY_UNKNOWN,
>+        .MemoryPoolPreference = D3D12_MEMORY_POOL_UNKNOWN,
>+        .CreationNodeMask     = 0,
>+        .VisibleNodeMask      = 0,
>+    };
>+
>+    if (FAILED(ID3D12Device_CreateCommittedResource(device, &props,
>D3D12_HEAP_FLAG_NONE, desc,
>+        states, NULL, &IID_ID3D12Resource, ppResource)))
>+        return AVERROR(EINVAL);
>+
>+    return 0;
>+}
>+
>+static int d3d12va_create_staging_buffer_resource(AVHWFramesContext *ctx)
>+{
>+    AVD3D12VADeviceContext *device_hwctx = ctx->device_ctx->hwctx;
>+    D3D12VAFramesContext   *s            = ctx->internal->priv;
>+
>+    D3D12_RESOURCE_DESC desc = {
>+        .Dimension          = D3D12_RESOURCE_DIMENSION_BUFFER,
>+        .Alignment          = 0,
>+        .Width              = 0,
>+        .Height             = 1,
>+        .DepthOrArraySize   = 1,
>+        .MipLevels          = 1,
>+        .Format             = DXGI_FORMAT_UNKNOWN,
>+        .SampleDesc         = { .Count = 1, .Quality = 0 },
>+        .Layout             = D3D12_TEXTURE_LAYOUT_ROW_MAJOR,
>+        .Flags              = D3D12_RESOURCE_FLAG_NONE,
>+    };
>+
>+    s->luma_component_size = FFALIGN(ctx->width * (s->format ==
>DXGI_FORMAT_P010 ? 2 : 1), D3D12_TEXTURE_DATA_PITCH_ALIGNMENT) *
>ctx->height;
>+    desc.Width = s->luma_component_size + (s->luma_component_size >> 1);
>+
>+    return create_resource(device_hwctx->device, &desc,
>D3D12_RESOURCE_STATE_COPY_DEST, &s->staging_buffer, 1);
>+}
>+
>+static int d3d12va_create_helper_objects(AVHWFramesContext *ctx)
>+{
>+    AVD3D12VADeviceContext *device_hwctx = ctx->device_ctx->hwctx;
>+    D3D12VAFramesContext   *s            = ctx->internal->priv;
>+
>+    D3D12_COMMAND_QUEUE_DESC queue_desc = {
>+        .Type     = D3D12_COMMAND_LIST_TYPE_COPY,
>+        .Priority = 0,
>+        .NodeMask = 0,
>+    };
>+
>+    int ret = d3d12va_create_staging_buffer_resource(ctx);
>+    if (ret < 0)
>+        return ret;
>+
>+    ret = av_d3d12va_sync_context_alloc(device_hwctx, &s->sync_ctx);
>+    if (ret < 0)
>+        return ret;
>+
>+    DX_CHECK(ID3D12Device_CreateCommandQueue(device_hwctx->device,
>&queue_desc,
>+        &IID_ID3D12CommandQueue, &s->command_queue));
>+
>+    DX_CHECK(ID3D12Device_CreateCommandAllocator(device_hwctx->device,
>queue_desc.Type,
>+        &IID_ID3D12CommandAllocator, &s->command_allocator));
>+
>+    DX_CHECK(ID3D12Device_CreateCommandList(device_hwctx->device, 0,
>queue_desc.Type,
>+        s->command_allocator, NULL, &IID_ID3D12GraphicsCommandList, &s-
>>command_list));
>+
>+    DX_CHECK(ID3D12GraphicsCommandList_Close(s->command_list));
>+
>+    ID3D12CommandQueue_ExecuteCommandLists(s->command_queue, 1,
>(ID3D12CommandList **)&s->command_list);
>+
>+    return d3d12va_wait_queue_idle(s->sync_ctx, s->command_queue);
>+
>+fail:
>+    return AVERROR(EINVAL);
>+}
>+
>+static void d3d12va_frames_uninit(AVHWFramesContext *ctx)
>+{
>+    AVD3D12VAFramesContext *frames_hwctx = ctx->hwctx;
>+    D3D12VAFramesContext   *s            = ctx->internal->priv;
>+
>+    av_d3d12va_sync_context_free(&s->sync_ctx);
>+
>+    D3D12_OBJECT_RELEASE(s->staging_buffer);
>+    D3D12_OBJECT_RELEASE(s->command_allocator);
>+    D3D12_OBJECT_RELEASE(s->command_list);
>+    D3D12_OBJECT_RELEASE(s->command_queue);
>+
>+    av_freep(&frames_hwctx->texture_infos);
>+}
>+
>+static int d3d12va_frames_get_constraints(AVHWDeviceContext *ctx, const
>void *hwconfig, AVHWFramesConstraints *constraints)
>+{
>+    HRESULT hr;
>+    int nb_sw_formats = 0;
>+    AVD3D12VADeviceContext *device_hwctx = ctx->hwctx;
>+
>+    constraints->valid_sw_formats =
>av_malloc_array(FF_ARRAY_ELEMS(supported_formats) + 1,
>+                                                    sizeof(*constraints->valid_sw_formats));
>+    if (!constraints->valid_sw_formats)
>+        return AVERROR(ENOMEM);
>+
>+    for (int i = 0; i < FF_ARRAY_ELEMS(supported_formats); i++) {
>+        D3D12_FEATURE_DATA_FORMAT_SUPPORT format_support =
>{ supported_formats[i].d3d_format };
>+        hr = ID3D12Device_CheckFeatureSupport(device_hwctx->device,
>D3D12_FEATURE_FORMAT_SUPPORT, &format_support,
>sizeof(format_support));
>+        if (SUCCEEDED(hr) && (format_support.Support1 &
>D3D12_FORMAT_SUPPORT1_TEXTURE2D))
>+            constraints->valid_sw_formats[nb_sw_formats++] =
>supported_formats[i].pix_fmt;
>+    }
>+    constraints->valid_sw_formats[nb_sw_formats] = AV_PIX_FMT_NONE;
>+
>+    constraints->valid_hw_formats = av_malloc_array(2, sizeof(*constraints-
>>valid_hw_formats));
>+    if (!constraints->valid_hw_formats)
>+        return AVERROR(ENOMEM);
>+
>+    constraints->valid_hw_formats[0] = AV_PIX_FMT_D3D12;
>+    constraints->valid_hw_formats[1] = AV_PIX_FMT_NONE;
>+
>+    return 0;
>+}
>+
>+static void free_texture(void *opaque, uint8_t *data)
>+{
>+    AVD3D12VAFrame *frame = (AVD3D12VAFrame *)data;
>+
>+    if (frame->sync_ctx)
>+        av_d3d12va_sync_context_free(&frame->sync_ctx);
>+
>+    D3D12_OBJECT_RELEASE(frame->texture);
>+    av_freep(&data);
>+}
>+
>+static AVBufferRef *d3d12va_pool_alloc(void *opaque, size_t size)
>+{
>+    AVHWFramesContext      *ctx          = (AVHWFramesContext *)opaque;
>+    D3D12VAFramesContext   *s            = ctx->internal->priv;
>+    AVD3D12VAFramesContext *hwctx        = ctx->hwctx;
>+    AVD3D12VADeviceContext *device_hwctx = ctx->device_ctx->hwctx;
>+
>+    int ret;
>+    AVBufferRef *buf;
>+    AVD3D12VAFrame *frame;
>+
>+    D3D12_RESOURCE_DESC desc = {
>+        .Dimension        = D3D12_RESOURCE_DIMENSION_TEXTURE2D,
>+        .Alignment        = 0,
>+        .Width            = ctx->width,
>+        .Height           = ctx->height,
>+        .DepthOrArraySize = 1,
>+        .MipLevels        = 1,
>+        .Format           = s->format,
>+        .SampleDesc       = {.Count = 1, .Quality = 0 },
>+        .Layout           = D3D12_TEXTURE_LAYOUT_UNKNOWN,
>+        .Flags            = D3D12_RESOURCE_FLAG_NONE,
>+    };
>+
>+    if (s->nb_surfaces_used >= ctx->initial_pool_size) {
>+        av_log(ctx, AV_LOG_ERROR, "Static surface pool size exceeded.\n");
>+        return NULL;
>+    }
>+
>+    frame = av_mallocz(sizeof(AVD3D12VAFrame));
>+    if (!frame)
>+        return NULL;
>+
>+    ret = create_resource(device_hwctx->device, &desc,
>D3D12_RESOURCE_STATE_COMMON, &frame->texture, 0);
>+    if (ret < 0)
>+        goto fail;
>+
>+    ret = av_d3d12va_sync_context_alloc(device_hwctx, &frame->sync_ctx);
>+    if (ret < 0)
>+        goto fail;
>+
>+    frame->index = s->nb_surfaces_used;
>+    hwctx->texture_infos[s->nb_surfaces_used].texture = frame->texture;
>+    hwctx->texture_infos[s->nb_surfaces_used].index = frame->index;
>+    hwctx->texture_infos[s->nb_surfaces_used].sync_ctx = frame->sync_ctx;
>+    s->nb_surfaces_used++;
>+
>+    buf = av_buffer_create((uint8_t *)frame, sizeof(frame), free_texture, NULL,
>0);
>+    if (!buf)
>+        goto fail;
>+
>+    return buf;
>+
>+fail:
>+    free_texture(NULL, (uint8_t *)frame);
>+    return NULL;
>+}
>+
>+static int d3d12va_frames_init(AVHWFramesContext *ctx)
>+{
>+    AVD3D12VAFramesContext *hwctx        = ctx->hwctx;
>+    AVD3D12VADeviceContext *device_hwctx = ctx->device_ctx->hwctx;
>+    D3D12VAFramesContext   *s            = ctx->internal->priv;
>+
>+    int i;
>+
>+    for (i = 0; i < FF_ARRAY_ELEMS(supported_formats); i++) {
>+        if (ctx->sw_format == supported_formats[i].pix_fmt) {
>+            s->format = supported_formats[i].d3d_format;
>+            break;
>+        }
>+    }
>+    if (i == FF_ARRAY_ELEMS(supported_formats)) {
>+        av_log(ctx, AV_LOG_ERROR, "Unsupported pixel format: %s\n",
>+               av_get_pix_fmt_name(ctx->sw_format));
>+        return AVERROR(EINVAL);
>+    }
>+
>+    hwctx->texture_infos = av_realloc_f(NULL, ctx->initial_pool_size,
>sizeof(*hwctx->texture_infos));
>+    if (!hwctx->texture_infos)
>+        return AVERROR(ENOMEM);
>+
>+    memset(hwctx->texture_infos, 0, ctx->initial_pool_size * sizeof(*hwctx-
>>texture_infos));
>+    s->nb_surfaces = ctx->initial_pool_size;
>+
>+    ctx->internal->pool_internal =
>av_buffer_pool_init2(sizeof(AVD3D12VAFrame),
>+        ctx, d3d12va_pool_alloc, NULL);
>+
>+    if (!ctx->internal->pool_internal)
>+        return AVERROR(ENOMEM);
>+
>+    return 0;
>+}
>+
>+static int d3d12va_get_buffer(AVHWFramesContext *ctx, AVFrame *frame)
>+{
>+    int ret;
>+
>+    frame->buf[0] = av_buffer_pool_get(ctx->pool);
>+    if (!frame->buf[0])
>+        return AVERROR(ENOMEM);
>+
>+    ret = av_image_fill_arrays(frame->data, frame->linesize, NULL,
>+        ctx->sw_format, ctx->width, ctx->height,
>D3D12_TEXTURE_DATA_PITCH_ALIGNMENT);
>+    if (ret < 0)
>+        return ret;
>+
>+    frame->data[0] = frame->buf[0]->data;
>+    frame->format  = AV_PIX_FMT_D3D12;
>+    frame->width   = ctx->width;
>+    frame->height  = ctx->height;
>+
>+    return 0;
>+}
>+
>+static int d3d12va_transfer_get_formats(AVHWFramesContext *ctx,
>+                                        enum AVHWFrameTransferDirection dir,
>+                                        enum AVPixelFormat **formats)
>+{
>+    D3D12VAFramesContext *s = ctx->internal->priv;
>+    enum AVPixelFormat *fmts;
>+
>+    fmts = av_malloc_array(2, sizeof(*fmts));
>+    if (!fmts)
>+        return AVERROR(ENOMEM);
>+
>+    fmts[0] = ctx->sw_format;
>+    fmts[1] = AV_PIX_FMT_NONE;
>+
>+    *formats = fmts;
>+
>+    return 0;
>+}
>+
>+static int d3d12va_transfer_data(AVHWFramesContext *ctx, AVFrame *dst,
>+                                 const AVFrame *src)
>+{
>+    AVD3D12VADeviceContext *hwctx        = ctx->device_ctx->hwctx;
>+    AVD3D12VAFramesContext *frames_hwctx = ctx->hwctx;
>+    D3D12VAFramesContext   *s            = ctx->internal->priv;
>+
>+    int ret;
>+    int download = src->format == AV_PIX_FMT_D3D12;
>+    const AVFrame *frame = download ? src : dst;
>+    const AVFrame *other = download ? dst : src;
>+
>+    AVD3D12VAFrame *f = (AVD3D12VAFrame *)frame->data[0];
>+    ID3D12Resource       *texture  = (ID3D12Resource *)      f->texture;
>+    int                   index    = (intptr_t)              f->index;
>+    AVD3D12VASyncContext *sync_ctx = (AVD3D12VASyncContext *)f-
>>sync_ctx;
>+
>+    uint8_t *mapped_data;
>+    uint8_t *data[4];
>+    int linesizes[4];
>+
>+    D3D12_TEXTURE_COPY_LOCATION staging_y_location;
>+    D3D12_TEXTURE_COPY_LOCATION staging_uv_location;
>+
>+    D3D12_TEXTURE_COPY_LOCATION texture_y_location = {
>+        .pResource        = texture,
>+        .Type             = D3D12_TEXTURE_COPY_TYPE_SUBRESOURCE_INDEX,
>+        .SubresourceIndex = 0,
>+    };
>+
>+    D3D12_TEXTURE_COPY_LOCATION texture_uv_location = {
>+        .pResource        = texture,
>+        .Type             = D3D12_TEXTURE_COPY_TYPE_SUBRESOURCE_INDEX,
>+        .SubresourceIndex = 1,
>+    };
>+
>+    D3D12_RESOURCE_BARRIER barrier = {
>+        .Type  = D3D12_RESOURCE_BARRIER_TYPE_TRANSITION,
>+        .Flags = D3D12_RESOURCE_BARRIER_FLAG_NONE,
>+        .Transition = {
>+            .pResource   = texture,
>+            .StateBefore = D3D12_RESOURCE_STATE_COMMON,
>+            .StateAfter  = D3D12_RESOURCE_STATE_COPY_SOURCE,
>+            .Subresource = D3D12_RESOURCE_BARRIER_ALL_SUBRESOURCES,
>+        }
>+    };
>+
>+    s->format = av_d3d12va_map_sw_to_hw_format(ctx->sw_format);
>+
>+    if (frame->hw_frames_ctx->data != (uint8_t *)ctx || other->format != ctx-
>>sw_format)
>+        return AVERROR(EINVAL);
>+
>+    if (!s->command_queue) {
>+        ret = d3d12va_create_helper_objects(ctx);
>+        if (ret < 0)
>+            return ret;
>+    }
>+
>+    for (int i = 0; i < 4; i++)
>+        linesizes[i] = FFALIGN(frame->width * (s->format ==
>DXGI_FORMAT_P010 ? 2 : 1), D3D12_TEXTURE_DATA_PITCH_ALIGNMENT);
>+
>+    staging_y_location = (D3D12_TEXTURE_COPY_LOCATION) {
>+        .pResource = s->staging_buffer,
>+        .Type      = D3D12_TEXTURE_COPY_TYPE_PLACED_FOOTPRINT,
>+        .PlacedFootprint = {
>+            .Offset = 0,
>+            .Footprint = {
>+                .Format   = s->format == DXGI_FORMAT_P010 ?
>DXGI_FORMAT_R16_UNORM : DXGI_FORMAT_R8_UNORM,
>+                .Width    = ctx->width,
>+                .Height   = ctx->height,
>+                .Depth    = 1,
>+                .RowPitch = linesizes[0],
>+            },
>+        },
>+    };
>+
>+    staging_uv_location = (D3D12_TEXTURE_COPY_LOCATION) {
>+        .pResource = s->staging_buffer,
>+        .Type      = D3D12_TEXTURE_COPY_TYPE_PLACED_FOOTPRINT,
>+        .PlacedFootprint = {
>+            .Offset = s->luma_component_size,
>+            .Footprint = {
>+                .Format   = s->format == DXGI_FORMAT_P010 ?
>DXGI_FORMAT_R16G16_UNORM : DXGI_FORMAT_R8G8_UNORM,
>+                .Width    = ctx->width  >> 1,
>+                .Height   = ctx->height >> 1,
>+                .Depth    = 1,
>+                .RowPitch = linesizes[0],
>+            },
>+        },
>+    };
>+
>+    DX_CHECK(ID3D12CommandAllocator_Reset(s->command_allocator));
>+
>+    DX_CHECK(ID3D12GraphicsCommandList_Reset(s->command_list, s-
>>command_allocator, NULL));
>+
>+    if (download) {
>+        ID3D12GraphicsCommandList_ResourceBarrier(s->command_list, 1,
>&barrier);
>+
>+        ID3D12GraphicsCommandList_CopyTextureRegion(s->command_list,
>+            &staging_y_location, 0, 0, 0, &texture_y_location, NULL);
>+
>+        ID3D12GraphicsCommandList_CopyTextureRegion(s->command_list,
>+            &staging_uv_location, 0, 0, 0, &texture_uv_location, NULL);
>+
>+        barrier.Transition.StateBefore = barrier.Transition.StateAfter;
>+        barrier.Transition.StateAfter = D3D12_RESOURCE_STATE_COMMON;
>+        ID3D12GraphicsCommandList_ResourceBarrier(s->command_list, 1,
>&barrier);
>+
>+        DX_CHECK(ID3D12GraphicsCommandList_Close(s->command_list));
>+
>+        if (!hwctx->sync)
>+            DX_CHECK(ID3D12CommandQueue_Wait(s->command_queue,
>sync_ctx->fence, sync_ctx->fence_value));
>+
>+        ID3D12CommandQueue_ExecuteCommandLists(s->command_queue, 1,
>(ID3D12CommandList **)&s->command_list);
>+
>+        ret = d3d12va_wait_queue_idle(s->sync_ctx, s->command_queue);
>+        if (ret)
>+            return ret;
>+
>+        DX_CHECK(ID3D12Resource_Map(s->staging_buffer, 0, NULL,
>&mapped_data));
>+        av_image_fill_pointers(data, ctx->sw_format, ctx->height, mapped_data,
>linesizes);
>+
>+        av_image_copy(dst->data, dst->linesize, data, linesizes,
>+            ctx->sw_format, ctx->width, ctx->height);
>+
>+        ID3D12Resource_Unmap(s->staging_buffer, 0, NULL);
>+    } else {
>+        av_log(ctx, AV_LOG_ERROR, "Transfer data to AV_PIX_FMT_D3D12 is not
>supported yet!\n");
>+        return AVERROR(EINVAL);
>+    }
>+
>+    return 0;
>+
>+fail:
>+    return AVERROR(EINVAL);
>+}
>+
>+static int d3d12va_load_functions(AVHWDeviceContext *hwdev)
>+{
>+    D3D12VADevicePriv *priv = hwdev->internal->priv;
>+
>+#if !HAVE_UWP
>+    priv->d3d12lib = dlopen("d3d12.dll", 0);
>+    priv->dxgilib  = dlopen("dxgi.dll", 0);
>+
>+    if (!priv->d3d12lib || !priv->dxgilib)
>+        goto fail;
>+
>+    priv->create_device = (PFN_D3D12_CREATE_DEVICE)GetProcAddress(priv-
>>d3d12lib, "D3D12CreateDevice");
>+    if (!priv->create_device)
>+        goto fail;
>+
>+    priv->create_dxgi_factory2 =
>(PFN_CREATE_DXGI_FACTORY2)GetProcAddress(priv->dxgilib,
>"CreateDXGIFactory2");
>+    if (!priv->create_dxgi_factory2)
>+        goto fail;
>+
>+    priv->get_debug_interface  =
>(PFN_D3D12_GET_DEBUG_INTERFACE)GetProcAddress(priv->d3d12lib,
>"D3D12GetDebugInterface");
>+#else
>+    priv->create_device        = (PFN_D3D12_CREATE_DEVICE)
>D3D12CreateDevice;
>+    priv->create_dxgi_factory2 = (PFN_CREATE_DXGI_FACTORY2)
>CreateDXGIFactory2;
>+    priv->get_debug_interface  = (PFN_D3D12_GET_DEBUG_INTERFACE)
>D3D12GetDebugInterface;
>+#endif
>+    return 0;
>+
>+fail:
>+    av_log(hwdev, AV_LOG_ERROR, "Failed to load D3D12 library or its
>functions\n");
>+    return AVERROR_UNKNOWN;
>+}
>+
>+static void d3d12va_device_free(AVHWDeviceContext *hwdev)
>+{
>+    AVD3D12VADeviceContext *ctx  = hwdev->hwctx;
>+    D3D12VADevicePriv      *priv = hwdev->internal->priv;
>+
>+    D3D12_OBJECT_RELEASE(ctx->device);
>+
>+    if (priv->d3d12lib)
>+        dlclose(priv->d3d12lib);
>+
>+    if (priv->dxgilib)
>+        dlclose(priv->dxgilib);
>+}
>+
>+static int d3d12va_device_init(AVHWDeviceContext *hwdev)
>+{
>+    AVD3D12VADeviceContext *ctx = hwdev->hwctx;
>+
>+    if (!ctx->video_device)
>+        DX_CHECK(ID3D12Device_QueryInterface(ctx->device,
>&IID_ID3D12VideoDevice, (void **)&ctx->video_device));
>+
>+    return 0;
>+
>+fail:
>+    return AVERROR(EINVAL);
>+}
>+
>+static void d3d12va_device_uninit(AVHWDeviceContext *hwdev)
>+{
>+    AVD3D12VADeviceContext *device_hwctx = hwdev->hwctx;
>+
>+    D3D12_OBJECT_RELEASE(device_hwctx->video_device);
>+}
>+
>+static int d3d12va_device_create(AVHWDeviceContext *hwdev, const char
>*device,
>+                                 AVDictionary *opts, int flags)
>+{
>+    AVD3D12VADeviceContext *ctx  = hwdev->hwctx;
>+    D3D12VADevicePriv      *priv = hwdev->internal->priv;
>+
>+    HRESULT hr;
>+    UINT create_flags = 0;
>+    IDXGIAdapter *pAdapter = NULL;
>+
>+    int ret;
>+    int is_debug = !!av_dict_get(opts, "debug", NULL, 0);
>+    ctx->sync    = !!av_dict_get(opts, "sync",  NULL, 0);
>+
>+    hwdev->free = d3d12va_device_free;
>+
>+    ret = d3d12va_load_functions(hwdev);
>+    if (ret < 0)
>+        return ret;
>+
>+    if (is_debug) {
>+        ID3D12Debug *pDebug;
>+        if (priv->get_debug_interface && SUCCEEDED(priv-
>>get_debug_interface(&IID_ID3D12Debug, &pDebug))) {
>+            create_flags |= DXGI_CREATE_FACTORY_DEBUG;
>+            ID3D12Debug_EnableDebugLayer(pDebug);
>+            D3D12_OBJECT_RELEASE(pDebug);
>+            av_log(hwdev, AV_LOG_INFO, "D3D12 debug layer is enabled!\n");
>+        }
>+    }
>+
>+    if (!ctx->device) {
>+        IDXGIFactory2 *pDXGIFactory = NULL;
>+
>+        hr = priv->create_dxgi_factory2(create_flags, &IID_IDXGIFactory2, (void
>**)&pDXGIFactory);
>+        if (SUCCEEDED(hr)) {
>+            int adapter = device ? atoi(device) : 0;
>+            if (FAILED(IDXGIFactory2_EnumAdapters(pDXGIFactory, adapter,
>&pAdapter)))
>+                pAdapter = NULL;
>+            IDXGIFactory2_Release(pDXGIFactory);
>+        }
>+
>+        if (pAdapter) {
>+            DXGI_ADAPTER_DESC desc;
>+            hr = IDXGIAdapter2_GetDesc(pAdapter, &desc);
>+            if (!FAILED(hr)) {
>+                av_log(ctx, AV_LOG_INFO, "Using device %04x:%04x (%ls).\n",
>+                       desc.VendorId, desc.DeviceId, desc.Description);
>+            }
>+        }
>+
>+        hr = priv->create_device((IUnknown *)pAdapter,
>D3D_FEATURE_LEVEL_12_0, &IID_ID3D12Device, &ctx->device);
>+        D3D12_OBJECT_RELEASE(pAdapter);
>+        if (FAILED(hr)) {
>+            av_log(ctx, AV_LOG_ERROR, "Failed to create Direct 3D 12 device
>(%lx)\n", (long)hr);
>+            return AVERROR_UNKNOWN;
>+        }
>+    }
>+
>+    return 0;
>+}
>+
>+const HWContextType ff_hwcontext_type_d3d12va = {
>+    .type                   = AV_HWDEVICE_TYPE_D3D12VA,
>+    .name                   = "D3D12VA",
>+
>+    .device_hwctx_size      = sizeof(AVD3D12VADeviceContext),
>+    .device_priv_size       = sizeof(D3D12VADevicePriv),
>+    .frames_hwctx_size      = sizeof(AVD3D12VAFramesContext),
>+    .frames_priv_size       = sizeof(D3D12VAFramesContext),
>+
>+    .device_create          = d3d12va_device_create,
>+    .device_init            = d3d12va_device_init,
>+    .device_uninit          = d3d12va_device_uninit,
>+    .frames_get_constraints = d3d12va_frames_get_constraints,
>+    .frames_init            = d3d12va_frames_init,
>+    .frames_uninit          = d3d12va_frames_uninit,
>+    .frames_get_buffer      = d3d12va_get_buffer,
>+    .transfer_get_formats   = d3d12va_transfer_get_formats,
>+    .transfer_data_to       = d3d12va_transfer_data,
>+    .transfer_data_from     = d3d12va_transfer_data,
>+
>+    .pix_fmts               = (const enum AVPixelFormat[]){ AV_PIX_FMT_D3D12,
>AV_PIX_FMT_NONE },
>+};
>diff --git a/libavutil/hwcontext_d3d12va.h b/libavutil/hwcontext_d3d12va.h
>new file mode 100644
>index 0000000000..a9fff38c72
>--- /dev/null
>+++ b/libavutil/hwcontext_d3d12va.h
>@@ -0,0 +1,155 @@
>+/*
>+ * Direct3D 12 HW acceleration.
>+ *
>+ * copyright (c) 2022-2023 Wu Jianhua <toqsxw at outlook.com>
>+ *
>+ * 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 AVUTIL_HWCONTEXT_D3D12VA_H
>+#define AVUTIL_HWCONTEXT_D3D12VA_H
>+
>+/**
>+ * @file
>+ * An API-specific header for AV_HWDEVICE_TYPE_D3D12VA.
>+ *
>+ * This API does not support dynamic frame pools. AVHWFramesContext.pool
>must
>+ * contain AVBufferRefs whose data pointer points to an
>AVD3D12FrameDescriptor struct.
>+ */
>+#include <stdint.h>
>+#include <initguid.h>
>+#include <d3d12.h>
>+#include <d3d12video.h>
>+
>+/**
>+ * @brief This struct is allocated as AVHWDeviceContext.hwctx
>+ *
>+ */
>+typedef struct AVD3D12VADeviceContext {
>+    /**
>+     * Device used for objects creation and access. This can also be
>+     * used to set the libavcodec decoding device.
>+     *
>+     * Can be set by the user. This is the only mandatory field - the other
>+     * device context fields are set from this and are available for convenience.
>+     *
>+     * Deallocating the AVHWDeviceContext will always release this interface,
>+     * and it does not matter whether it was user-allocated.
>+     */
>+    ID3D12Device *device;
>+
>+    /**
>+     * If unset, this will be set from the device field on init.
>+     *
>+     * Deallocating the AVHWDeviceContext will always release this interface,
>+     * and it does not matter whether it was user-allocated.
>+     */
>+    ID3D12VideoDevice *video_device;
>+
>+    /**
>+     * Specifed by sync=1 when init d3d12va
>+     *
>+     * Execute commands as sync mode
>+     */
>+    int sync;
>+} AVD3D12VADeviceContext;
>+
>+/**
>+ * @brief This struct is used to sync d3d12 execution
>+ *
>+ */
>+typedef struct AVD3D12VASyncContext {
>+    /**
>+     * D3D12 fence object
>+     */
>+    ID3D12Fence *fence;
>+
>+    /**
>+     * A handle to the event object
>+     */
>+    HANDLE event;
>+
>+    /**
>+     * The fence value used for sync
>+     */
>+    uint64_t fence_value;
>+} AVD3D12VASyncContext;
>+
>+/**
>+ * @brief D3D12VA frame descriptor for pool allocation.
>+ *
>+ */
>+typedef struct AVD3D12VAFrame {
>+    /**
>+     * The texture in which the frame is located. The reference count is
>+     * managed by the AVBufferRef, and destroying the reference will release
>+     * the interface.
>+     */
>+    ID3D12Resource *texture;
>+
>+    /**
>+     * The index into the array texture element representing the frame
>+     */
>+    intptr_t index;
>+
>+    /**
>+     * The sync context for the texture
>+     *
>+     * Use av_d3d12va_wait_idle(sync_ctx) to ensure the decoding or encoding
>have been finised
>+     * @see: https://learn.microsoft.com/en-
>us/windows/win32/medfound/direct3d-12-video-overview#directx-12-fences
>+     */
>+    AVD3D12VASyncContext *sync_ctx;
>+} AVD3D12VAFrame;
>+
>+/**
>+ * @brief This struct is allocated as AVHWFramesContext.hwctx
>+ *
>+ */
>+typedef struct AVD3D12VAFramesContext {
>+    /**
>+     * This field is not able to be user-allocated at the present.
>+     */
>+    AVD3D12VAFrame *texture_infos;
>+} AVD3D12VAFramesContext;
>+
>+/**
>+ * @brief Map sw pixel format to d3d12 format
>+ *
>+ * @return d3d12 specified format
>+ */
>+DXGI_FORMAT av_d3d12va_map_sw_to_hw_format(enum AVPixelFormat
>pix_fmt);
>+
>+/**
>+ * @brief Allocate an AVD3D12VASyncContext
>+ *
>+ * @return Error code (ret < 0 if failed)
>+ */
>+int av_d3d12va_sync_context_alloc(AVD3D12VADeviceContext *ctx,
>AVD3D12VASyncContext **sync_ctx);
>+
>+/**
>+ * @brief Free an AVD3D12VASyncContext
>+ */
>+void av_d3d12va_sync_context_free(AVD3D12VASyncContext **sync_ctx);
>+
>+/**
>+ * @brief Wait for the sync context to the idle state
>+ *
>+ * @return Error code (ret < 0 if failed)
>+ */
>+int av_d3d12va_wait_idle(AVD3D12VASyncContext *sync_ctx);
>+
>+#endif /* AVUTIL_HWCONTEXT_D3D12VA_H */
>diff --git a/libavutil/hwcontext_d3d12va_internal.h
>b/libavutil/hwcontext_d3d12va_internal.h
>new file mode 100644
>index 0000000000..bfd89b3545
>--- /dev/null
>+++ b/libavutil/hwcontext_d3d12va_internal.h
>@@ -0,0 +1,59 @@
>+/*
>+ * Direct3D 12 HW acceleration.
>+ *
>+ * copyright (c) 2022-2023 Wu Jianhua <toqsxw at outlook.com>
>+ *
>+ * 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 AVUTIL_HWCONTEXT_D3D12VA_INTERNAL_H
>+#define AVUTIL_HWCONTEXT_D3D12VA_INTERNAL_H
>+
>+/**
>+ * @def COBJMACROS
>+ *
>+ * @brief Enable C style interface for D3D12
>+ */
>+#ifndef COBJMACROS
>+#define COBJMACROS
>+#endif
>+
>+/**
>+ * @def DX_CHECK
>+ *
>+ * @brief A check macro used by D3D12 functions highly frequently
>+ */
>+#define DX_CHECK(hr)                              \
>+    do {                                          \
>+        if (FAILED(hr))                           \
>+            goto fail;                            \
>+    } while (0)
>+
>+/**
>+ * @def D3D12_OBJECT_RELEASE
>+ *
>+ * @brief A release macro used by D3D12 objects highly frequently
>+ */
>+#define D3D12_OBJECT_RELEASE(pInterface)              \
>+    do {                                              \
>+        if (pInterface) {                             \
>+            IUnknown_Release((IUnknown *)pInterface); \
>+            pInterface = NULL;                        \
>+        }                                             \
>+    } while (0)
>+
>+#endif /* AVUTIL_HWCONTEXT_D3D12VA_INTERNAL_H */
>\ No newline at end of file
>diff --git a/libavutil/hwcontext_internal.h b/libavutil/hwcontext_internal.h
>index e6266494ac..4df516ee6a 100644
>--- a/libavutil/hwcontext_internal.h
>+++ b/libavutil/hwcontext_internal.h
>@@ -165,6 +165,7 @@ int ff_hwframe_map_replace(AVFrame *dst, const
>AVFrame *src);
>
> extern const HWContextType ff_hwcontext_type_cuda;
> extern const HWContextType ff_hwcontext_type_d3d11va;
>+extern const HWContextType ff_hwcontext_type_d3d12va;
> extern const HWContextType ff_hwcontext_type_drm;
> extern const HWContextType ff_hwcontext_type_dxva2;
> extern const HWContextType ff_hwcontext_type_opencl;
>diff --git a/libavutil/pixdesc.c b/libavutil/pixdesc.c
>index e1e0dd2a9e..09fca5ef19 100644
>--- a/libavutil/pixdesc.c
>+++ b/libavutil/pixdesc.c
>@@ -2283,6 +2283,10 @@ static const AVPixFmtDescriptor
>av_pix_fmt_descriptors[AV_PIX_FMT_NB] = {
>         .name = "d3d11",
>         .flags = AV_PIX_FMT_FLAG_HWACCEL,
>     },
>+    [AV_PIX_FMT_D3D12] = {
>+        .name = "d3d12",
>+        .flags = AV_PIX_FMT_FLAG_HWACCEL,
>+    },
>     [AV_PIX_FMT_GBRPF32BE] = {
>         .name = "gbrpf32be",
>         .nb_components = 3,
>diff --git a/libavutil/pixfmt.h b/libavutil/pixfmt.h
>index 63e07ba64f..edf31cb574 100644
>--- a/libavutil/pixfmt.h
>+++ b/libavutil/pixfmt.h
>@@ -426,6 +426,13 @@ enum AVPixelFormat {
>     AV_PIX_FMT_P412BE,      ///< interleaved chroma YUV 4:4:4, 36bpp, data in
>the high bits, big-endian
>     AV_PIX_FMT_P412LE,      ///< interleaved chroma YUV 4:4:4, 36bpp, data in
>the high bits, little-endian
>
>+    /**
>+     * Hardware surfaces for Direct3D 12.
>+     *
>+     * data[0] points to an AVD3D12VAFrame
>+     */
>+    AV_PIX_FMT_D3D12,
>+
>     AV_PIX_FMT_NB         ///< number of pixel formats, DO NOT USE THIS if you
>want to link with shared libav* because the number of formats might differ
>between versions
> };
>
>diff --git a/libavutil/tests/hwdevice.c b/libavutil/tests/hwdevice.c
>index c57586613a..9d7964f9ee 100644
>--- a/libavutil/tests/hwdevice.c
>+++ b/libavutil/tests/hwdevice.c
>@@ -137,6 +137,8 @@ static const struct {
>       { "0", "1", "2" } },
>     { AV_HWDEVICE_TYPE_D3D11VA,
>       { "0", "1", "2" } },
>+    { AV_HWDEVICE_TYPE_D3D12VA,
>+      { "0", "1", "2" } },
>     { AV_HWDEVICE_TYPE_OPENCL,
>       { "0.0", "0.1", "1.0", "1.1" } },
>     { AV_HWDEVICE_TYPE_VAAPI,
>diff --git a/libavutil/version.h b/libavutil/version.h
>index bc43baca9f..6d27f91cce 100644
>--- a/libavutil/version.h
>+++ b/libavutil/version.h
>@@ -79,7 +79,7 @@
>  */
>
> #define LIBAVUTIL_VERSION_MAJOR  58
>-#define LIBAVUTIL_VERSION_MINOR  17
>+#define LIBAVUTIL_VERSION_MINOR  18
> #define LIBAVUTIL_VERSION_MICRO 100
>
> #define LIBAVUTIL_VERSION_INT
>AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \
>--
>2.41.0.windows.1



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