[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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