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new 451ff239e6 avfilter: d3d12 motion estimation filter support
451ff239e6 is described below
commit 451ff239e65e04197def85567b2d7b083456e01c
Author: stevxiao <[email protected]>
AuthorDate: Tue Dec 16 13:40:16 2025 -0500
Commit: ArazIusubov <[email protected]>
CommitDate: Mon Jan 26 11:31:48 2026 +0000
avfilter: d3d12 motion estimation filter support
This commit introduces a video filter `mestimate_d3d12` that provides
hardware-accelerated motion estimation using DirectX 12 Video Encoding APIs.
The filter leverages GPU hardware motion estimation capabilities to achieve
significant performance improvements over the existing software-based mestimate
filter.
Sample Command Line:
1. Basic mestimate_d3d12 functionality
```
ffmpeg_g.exe -hwaccel d3d12va -i test.mp4 -vf
mestimate_d3d12=mb_size=16 -f null -
```
2. Motion vector visualization
```
ffmpeg -hwaccel d3d12va -i input.mp4 -vf
"mestimate_d3d12,hwdownload,format=nv12,codecview=mv=pf" -c:v libx264 output.mp4
```
---
Changelog | 1 +
configure | 4 +
libavfilter/Makefile | 1 +
libavfilter/allfilters.c | 1 +
libavfilter/vf_mestimate_d3d12.c | 985 +++++++++++++++++++++++++++++++++++++++
5 files changed, 992 insertions(+)
diff --git a/Changelog b/Changelog
index 2f97b280cb..a9d68b369e 100644
--- a/Changelog
+++ b/Changelog
@@ -19,6 +19,7 @@ version <next>:
- JPEG-XS decoder and encoder through libsvtjpegxs
- JPEG-XS raw bitstream muxer and demuxer
- IAMF Projection mode Ambisonic Audio Elements muxing and demuxing
+- Add vf_mestimate_d3d12 filter
version 8.0:
diff --git a/configure b/configure
index ce0e199314..f2e0981a60 100755
--- a/configure
+++ b/configure
@@ -2663,6 +2663,7 @@ CONFIG_EXTRA="
cbs_vp9
celp_math
d3d12_intra_refresh
+ d3d12_motion_estimator
d3d12va_encode
d3d12va_me_precision_eighth_pixel
deflate_wrapper
@@ -3484,6 +3485,7 @@ gfxcapture_filter_deps="cxx17 threads d3d11va
IGraphicsCaptureItemInterop __x_AB
gfxcapture_filter_extralibs="-lstdc++"
scale_d3d11_filter_deps="d3d11va"
scale_d3d12_filter_deps="d3d12va ID3D12VideoProcessor"
+mestimate_d3d12_filter_deps="d3d12va ID3D12VideoMotionEstimator
d3d12_motion_estimator"
amf_deps_any="libdl LoadLibrary"
nvenc_deps="ffnvcodec"
@@ -7025,11 +7027,13 @@ check_type "windows.h d3d12.h" "ID3D12Device"
check_type "windows.h d3d12video.h" "ID3D12VideoDecoder"
check_type "windows.h d3d12video.h" "ID3D12VideoEncoder"
check_type "windows.h d3d12video.h" "ID3D12VideoProcessor"
+check_type "windows.h d3d12video.h" "ID3D12VideoMotionEstimator"
test_code cc "windows.h d3d12video.h" "D3D12_FEATURE_VIDEO feature =
D3D12_FEATURE_VIDEO_ENCODER_CODEC" && \
test_code cc "windows.h d3d12video.h"
"D3D12_FEATURE_DATA_VIDEO_ENCODER_RESOURCE_REQUIREMENTS req" && enable
d3d12_encoder_feature
test_code cc "windows.h d3d12video.h" "D3D12_VIDEO_ENCODER_CODEC c =
D3D12_VIDEO_ENCODER_CODEC_AV1; (void)c;" && enable d3d12va_av1_headers
test_code cc "windows.h d3d12video.h"
"D3D12_FEATURE_DATA_VIDEO_ENCODER_INTRA_REFRESH_MODE check = { 0 };" && enable
d3d12_intra_refresh
test_code cc "windows.h d3d12video.h"
"D3D12_VIDEO_ENCODER_MOTION_ESTIMATION_PRECISION_MODE m =
D3D12_VIDEO_ENCODER_MOTION_ESTIMATION_PRECISION_MODE_EIGHTH_PIXEL; (void)m;" &&
enable d3d12va_me_precision_eighth_pixel
+test_code cc "windows.h d3d12video.h"
"D3D12_FEATURE_DATA_VIDEO_MOTION_ESTIMATOR check = { 0 };" && enable
d3d12_motion_estimator
check_type "windows.h" "DPI_AWARENESS_CONTEXT" -D_WIN32_WINNT=0x0A00
check_type "windows.h security.h schnlsp.h" SecPkgContext_KeyingMaterialInfo
-DSECURITY_WIN32
check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
diff --git a/libavfilter/Makefile b/libavfilter/Makefile
index 05d68d2311..4e128ed109 100644
--- a/libavfilter/Makefile
+++ b/libavfilter/Makefile
@@ -395,6 +395,7 @@ OBJS-$(CONFIG_MCDEINT_FILTER) += vf_mcdeint.o
OBJS-$(CONFIG_MEDIAN_FILTER) += vf_median.o
OBJS-$(CONFIG_MERGEPLANES_FILTER) += vf_mergeplanes.o framesync.o
OBJS-$(CONFIG_MESTIMATE_FILTER) += vf_mestimate.o
motion_estimation.o
+OBJS-$(CONFIG_MESTIMATE_D3D12_FILTER) += vf_mestimate_d3d12.o
OBJS-$(CONFIG_METADATA_FILTER) += f_metadata.o
OBJS-$(CONFIG_MIDEQUALIZER_FILTER) += vf_midequalizer.o framesync.o
OBJS-$(CONFIG_MINTERPOLATE_FILTER) += vf_minterpolate.o
motion_estimation.o
diff --git a/libavfilter/allfilters.c b/libavfilter/allfilters.c
index 7065a3152f..33cd637706 100644
--- a/libavfilter/allfilters.c
+++ b/libavfilter/allfilters.c
@@ -369,6 +369,7 @@ extern const FFFilter ff_vf_mcdeint;
extern const FFFilter ff_vf_median;
extern const FFFilter ff_vf_mergeplanes;
extern const FFFilter ff_vf_mestimate;
+extern const FFFilter ff_vf_mestimate_d3d12;
extern const FFFilter ff_vf_metadata;
extern const FFFilter ff_vf_midequalizer;
extern const FFFilter ff_vf_minterpolate;
diff --git a/libavfilter/vf_mestimate_d3d12.c b/libavfilter/vf_mestimate_d3d12.c
new file mode 100644
index 0000000000..f4620dbe00
--- /dev/null
+++ b/libavfilter/vf_mestimate_d3d12.c
@@ -0,0 +1,985 @@
+/*
+ * D3D12 Hardware-Accelerated Motion Estimation Filter
+ *
+ * Copyright (c) 2025 Advanced Micro Devices, Inc.
+ *
+ * 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 "libavutil/avassert.h"
+#include "libavutil/buffer.h"
+#include "libavutil/hwcontext.h"
+#include "libavutil/hwcontext_d3d12va_internal.h"
+#include "libavutil/hwcontext_d3d12va.h"
+#include "libavutil/internal.h"
+#include "libavutil/opt.h"
+#include "libavutil/motion_vector.h"
+#include "libavutil/mem.h"
+#include "avfilter.h"
+#include "filters.h"
+#include "video.h"
+
+
+typedef struct MEstimateD3D12Context {
+ const AVClass *class;
+
+ AVBufferRef *hw_device_ref;
+ AVBufferRef *hw_frames_ref;
+
+ AVD3D12VADeviceContext *device_ctx;
+ AVD3D12VAFramesContext *frames_ctx;
+
+ ID3D12Device *device;
+ ID3D12VideoDevice1 *video_device;
+ ID3D12VideoMotionEstimator *motion_estimator;
+ ID3D12VideoMotionVectorHeap *motion_vector_heap;
+ ID3D12VideoEncodeCommandList *command_list;
+ ID3D12CommandQueue *command_queue;
+ ID3D12CommandAllocator *command_allocator;
+
+ // Graphics command list and queue for copy operations
+ ID3D12GraphicsCommandList *copy_command_list;
+ ID3D12CommandAllocator *copy_command_allocator;
+ ID3D12CommandQueue *copy_command_queue;
+
+ // Synchronization
+ ID3D12Fence *fence;
+ HANDLE fence_event;
+ uint64_t fence_value;
+
+ // Motion estimation parameters
+ int block_size; // 8 or 16
+ D3D12_VIDEO_MOTION_ESTIMATOR_SEARCH_BLOCK_SIZE d3d12_block_size;
+ D3D12_VIDEO_MOTION_ESTIMATOR_VECTOR_PRECISION precision;
+
+ // Frame buffer
+ AVFrame *prev_frame;
+ AVFrame *cur_frame;
+ AVFrame *next_frame;
+
+ // Output textures for resolved motion vectors (GPU-side, DEFAULT heap)
+ ID3D12Resource *resolved_mv_texture_back;
+ ID3D12Resource *resolved_mv_texture_fwd;
+
+ // Readback buffers for CPU access (READBACK heap)
+ ID3D12Resource *readback_buffer_back;
+ ID3D12Resource *readback_buffer_fwd;
+ size_t readback_buffer_size;
+
+ int initialized;
+} MEstimateD3D12Context;
+
+static int mestimate_d3d12_init(AVFilterContext *ctx)
+{
+ MEstimateD3D12Context *s = ctx->priv;
+
+ s->initialized = 0;
+ s->fence_value = 0;
+
+ // Validate block size - only 8 and 16 are valid
+ if (s->block_size != 8 && s->block_size != 16) {
+ av_log(ctx, AV_LOG_ERROR, "Invalid block_size %d. Only 8 and 16 are
supported.\n", s->block_size);
+ return AVERROR(EINVAL);
+ }
+
+ // Set D3D12 block size based on user option
+ if (s->block_size == 8)
+ s->d3d12_block_size =
D3D12_VIDEO_MOTION_ESTIMATOR_SEARCH_BLOCK_SIZE_8X8;
+ else
+ s->d3d12_block_size =
D3D12_VIDEO_MOTION_ESTIMATOR_SEARCH_BLOCK_SIZE_16X16;
+
+ // Use quarter-pel precision
+ s->precision = D3D12_VIDEO_MOTION_ESTIMATOR_VECTOR_PRECISION_QUARTER_PEL;
+
+ return 0;
+}
+
+static int mestimate_d3d12_create_objects(AVFilterContext *ctx)
+{
+ MEstimateD3D12Context *s = ctx->priv;
+ HRESULT hr;
+ D3D12_COMMAND_QUEUE_DESC queue_desc = {
+ .Type = D3D12_COMMAND_LIST_TYPE_VIDEO_ENCODE,
+ .Priority = 0,
+ .Flags = D3D12_COMMAND_QUEUE_FLAG_NONE,
+ .NodeMask = 0,
+ };
+
+ // Create fence for synchronization
+ hr = ID3D12Device_CreateFence(s->device, 0, D3D12_FENCE_FLAG_NONE,
+ &IID_ID3D12Fence, (void **)&s->fence);
+ if (FAILED(hr)) {
+ av_log(ctx, AV_LOG_ERROR, "Failed to create fence\n");
+ return AVERROR(EINVAL);
+ }
+
+ s->fence_event = CreateEvent(NULL, FALSE, FALSE, NULL);
+ if (!s->fence_event) {
+ av_log(ctx, AV_LOG_ERROR, "Failed to create fence event\n");
+ return AVERROR(EINVAL);
+ }
+
+ // Create command queue
+ hr = ID3D12Device_CreateCommandQueue(s->device, &queue_desc,
+ &IID_ID3D12CommandQueue, (void
**)&s->command_queue);
+ if (FAILED(hr)) {
+ av_log(ctx, AV_LOG_ERROR, "Failed to create command queue\n");
+ return AVERROR(EINVAL);
+ }
+
+ // Create command allocator
+ hr = ID3D12Device_CreateCommandAllocator(s->device,
D3D12_COMMAND_LIST_TYPE_VIDEO_ENCODE,
+ &IID_ID3D12CommandAllocator,
(void **)&s->command_allocator);
+ if (FAILED(hr)) {
+ av_log(ctx, AV_LOG_ERROR, "Failed to create command allocator\n");
+ return AVERROR(EINVAL);
+ }
+
+ // Create command list
+ hr = ID3D12Device_CreateCommandList(s->device, 0,
D3D12_COMMAND_LIST_TYPE_VIDEO_ENCODE,
+ s->command_allocator, NULL,
&IID_ID3D12VideoEncodeCommandList,
+ (void **)&s->command_list);
+ if (FAILED(hr)) {
+ av_log(ctx, AV_LOG_ERROR, "Failed to create command list\n");
+ return AVERROR(EINVAL);
+ }
+
+ hr = ID3D12VideoEncodeCommandList_Close(s->command_list);
+ if (FAILED(hr)) {
+ av_log(ctx, AV_LOG_ERROR, "Failed to close command list\n");
+ return AVERROR(EINVAL);
+ }
+
+ return 0;
+}
+
+static int mestimate_d3d12_create_motion_estimator(AVFilterContext *ctx, int
width, int height)
+{
+ MEstimateD3D12Context *s = ctx->priv;
+ HRESULT hr;
+ D3D12_FEATURE_DATA_VIDEO_MOTION_ESTIMATOR feature_data = {0};
+ D3D12_VIDEO_MOTION_ESTIMATOR_DESC me_desc = {0};
+ D3D12_VIDEO_MOTION_VECTOR_HEAP_DESC heap_desc = {0};
+
+ // Check if motion estimation is supported
+ // Set the input parameters for what we want to query
+ feature_data.NodeIndex = 0;
+ feature_data.InputFormat = s->frames_ctx->format;
+ feature_data.BlockSizeFlags = 0; // Will be filled by CheckFeatureSupport
with supported flags
+ feature_data.PrecisionFlags = 0; // Will be filled by CheckFeatureSupport
with supported flags
+ feature_data.SizeRange.MaxWidth = width;
+ feature_data.SizeRange.MaxHeight = height;
+ feature_data.SizeRange.MinWidth = width;
+ feature_data.SizeRange.MinHeight = height;
+
+ hr = ID3D12VideoDevice1_CheckFeatureSupport(s->video_device,
+
D3D12_FEATURE_VIDEO_MOTION_ESTIMATOR,
+ &feature_data,
sizeof(feature_data));
+ if (FAILED(hr)) {
+ av_log(ctx, AV_LOG_ERROR, "Failed to check motion estimator support
(hr=0x%lx)\n", (long)hr);
+ return AVERROR(EINVAL);
+ }
+
+ // Verify the requested features are actually supported (check returned
flags)
+ D3D12_VIDEO_MOTION_ESTIMATOR_SEARCH_BLOCK_SIZE_FLAGS requested_block_flag =
+ (s->d3d12_block_size ==
D3D12_VIDEO_MOTION_ESTIMATOR_SEARCH_BLOCK_SIZE_8X8) ?
+ D3D12_VIDEO_MOTION_ESTIMATOR_SEARCH_BLOCK_SIZE_FLAG_8X8 :
+ D3D12_VIDEO_MOTION_ESTIMATOR_SEARCH_BLOCK_SIZE_FLAG_16X16;
+
+ if (!(feature_data.BlockSizeFlags & requested_block_flag)) {
+ av_log(ctx, AV_LOG_ERROR, "Requested block size (%dx%d) not supported
by device (supported flags: 0x%x)\n",
+ s->block_size, s->block_size, feature_data.BlockSizeFlags);
+ return AVERROR(ENOSYS);
+ }
+
+ if (!(feature_data.PrecisionFlags &
D3D12_VIDEO_MOTION_ESTIMATOR_VECTOR_PRECISION_FLAG_QUARTER_PEL)) {
+ av_log(ctx, AV_LOG_ERROR, "Quarter-pel precision not supported by
device (supported flags: 0x%x)\n",
+ feature_data.PrecisionFlags);
+ return AVERROR(ENOSYS);
+ }
+
+ av_log(ctx, AV_LOG_VERBOSE, "Motion estimator support confirmed:
block_size=%dx%d, precision=quarter-pel\n",
+ s->block_size, s->block_size);
+
+ // Create motion estimator
+ me_desc.NodeMask = 0;
+ me_desc.InputFormat = s->frames_ctx->format;
+ me_desc.BlockSize = s->d3d12_block_size;
+ me_desc.Precision = s->precision;
+ me_desc.SizeRange = feature_data.SizeRange;
+
+ hr = ID3D12VideoDevice1_CreateVideoMotionEstimator(s->video_device,
&me_desc, NULL,
+
&IID_ID3D12VideoMotionEstimator,
+ (void
**)&s->motion_estimator);
+ if (FAILED(hr)) {
+ av_log(ctx, AV_LOG_ERROR, "Failed to create motion estimator\n");
+ return AVERROR(EINVAL);
+ }
+
+ // Create motion vector heap
+ heap_desc.NodeMask = 0;
+ heap_desc.InputFormat = s->frames_ctx->format;
+ heap_desc.BlockSize = s->d3d12_block_size;
+ heap_desc.Precision = s->precision;
+ heap_desc.SizeRange = feature_data.SizeRange;
+
+ hr = ID3D12VideoDevice1_CreateVideoMotionVectorHeap(s->video_device,
&heap_desc, NULL,
+
&IID_ID3D12VideoMotionVectorHeap,
+ (void
**)&s->motion_vector_heap);
+ if (FAILED(hr)) {
+ av_log(ctx, AV_LOG_ERROR, "Failed to create motion vector heap\n");
+ return AVERROR(EINVAL);
+ }
+
+ // Create resolved motion vector textures in DEFAULT heap (GPU writable)
+ // ResolveMotionVectorHeap outputs to TEXTURE2D with
DXGI_FORMAT_R16G16_SINT
+ int mb_width = (width + s->block_size - 1) / s->block_size;
+ int mb_height = (height + s->block_size - 1) / s->block_size;
+
+ D3D12_HEAP_PROPERTIES heap_props_default = {.Type =
D3D12_HEAP_TYPE_DEFAULT};
+ D3D12_RESOURCE_DESC texture_desc = {
+ .Dimension = D3D12_RESOURCE_DIMENSION_TEXTURE2D,
+ .Alignment = 0,
+ .Width = mb_width,
+ .Height = mb_height,
+ .DepthOrArraySize = 1,
+ .MipLevels = 1,
+ .Format = DXGI_FORMAT_R16G16_SINT, // Motion vector format:
signed 16-bit X,Y
+ .SampleDesc = {.Count = 1, .Quality = 0},
+ .Layout = D3D12_TEXTURE_LAYOUT_UNKNOWN,
+ .Flags = D3D12_RESOURCE_FLAG_NONE,
+ };
+
+ hr = ID3D12Device_CreateCommittedResource(s->device, &heap_props_default,
D3D12_HEAP_FLAG_NONE,
+ &texture_desc,
D3D12_RESOURCE_STATE_COMMON, NULL,
+ &IID_ID3D12Resource, (void
**)&s->resolved_mv_texture_back);
+ if (FAILED(hr)) {
+ av_log(ctx, AV_LOG_ERROR, "Failed to create backward motion vector
texture (hr=0x%lx)\n", (long)hr);
+ return AVERROR(EINVAL);
+ }
+
+ hr = ID3D12Device_CreateCommittedResource(s->device, &heap_props_default,
D3D12_HEAP_FLAG_NONE,
+ &texture_desc,
D3D12_RESOURCE_STATE_COMMON, NULL,
+ &IID_ID3D12Resource, (void
**)&s->resolved_mv_texture_fwd);
+ if (FAILED(hr)) {
+ av_log(ctx, AV_LOG_ERROR, "Failed to create forward motion vector
texture (hr=0x%lx)\n", (long)hr);
+ return AVERROR(EINVAL);
+ }
+
+ // Create READBACK buffers for CPU access
+ // Need to calculate proper size accounting for D3D12 row pitch alignment
+ // Get the footprint to determine the actual required buffer size
+ D3D12_PLACED_SUBRESOURCE_FOOTPRINT temp_layout;
+ UINT64 temp_total_size;
+
+ ID3D12Device_GetCopyableFootprints(s->device, &texture_desc, 0, 1, 0,
+ &temp_layout, NULL, NULL,
&temp_total_size);
+
+ s->readback_buffer_size = temp_total_size;
+
+ av_log(ctx, AV_LOG_DEBUG, "Readback buffer size: %llu bytes (texture:
%dx%d, pitch: %u)\n",
+ (unsigned long long)s->readback_buffer_size, mb_width, mb_height,
temp_layout.Footprint.RowPitch);
+
+ D3D12_HEAP_PROPERTIES heap_props_readback = {.Type =
D3D12_HEAP_TYPE_READBACK};
+ D3D12_RESOURCE_DESC buffer_desc = {
+ .Dimension = D3D12_RESOURCE_DIMENSION_BUFFER,
+ .Alignment = 0,
+ .Width = s->readback_buffer_size,
+ .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,
+ };
+
+ hr = ID3D12Device_CreateCommittedResource(s->device, &heap_props_readback,
D3D12_HEAP_FLAG_NONE,
+ &buffer_desc,
D3D12_RESOURCE_STATE_COPY_DEST, NULL,
+ &IID_ID3D12Resource, (void
**)&s->readback_buffer_back);
+ if (FAILED(hr)) {
+ av_log(ctx, AV_LOG_ERROR, "Failed to create backward readback buffer
(hr=0x%lx)\n", (long)hr);
+ return AVERROR(EINVAL);
+ }
+
+ hr = ID3D12Device_CreateCommittedResource(s->device, &heap_props_readback,
D3D12_HEAP_FLAG_NONE,
+ &buffer_desc,
D3D12_RESOURCE_STATE_COPY_DEST, NULL,
+ &IID_ID3D12Resource, (void
**)&s->readback_buffer_fwd);
+ if (FAILED(hr)) {
+ av_log(ctx, AV_LOG_ERROR, "Failed to create forward readback buffer
(hr=0x%lx)\n", (long)hr);
+ return AVERROR(EINVAL);
+ }
+
+ // Create graphics command queue, allocator and list for copy operations
+ D3D12_COMMAND_QUEUE_DESC copy_queue_desc = {
+ .Type = D3D12_COMMAND_LIST_TYPE_DIRECT,
+ .Priority = 0,
+ .Flags = D3D12_COMMAND_QUEUE_FLAG_NONE,
+ .NodeMask = 0,
+ };
+
+ hr = ID3D12Device_CreateCommandQueue(s->device, ©_queue_desc,
+ &IID_ID3D12CommandQueue, (void
**)&s->copy_command_queue);
+ if (FAILED(hr)) {
+ av_log(ctx, AV_LOG_ERROR, "Failed to create copy command queue\n");
+ return AVERROR(EINVAL);
+ }
+
+ hr = ID3D12Device_CreateCommandAllocator(s->device,
D3D12_COMMAND_LIST_TYPE_DIRECT,
+ &IID_ID3D12CommandAllocator,
(void **)&s->copy_command_allocator);
+ if (FAILED(hr)) {
+ av_log(ctx, AV_LOG_ERROR, "Failed to create copy command allocator\n");
+ return AVERROR(EINVAL);
+ }
+
+ hr = ID3D12Device_CreateCommandList(s->device, 0,
D3D12_COMMAND_LIST_TYPE_DIRECT,
+ s->copy_command_allocator, NULL,
&IID_ID3D12GraphicsCommandList,
+ (void **)&s->copy_command_list);
+ if (FAILED(hr)) {
+ av_log(ctx, AV_LOG_ERROR, "Failed to create copy command list\n");
+ return AVERROR(EINVAL);
+ }
+
+ hr = ID3D12GraphicsCommandList_Close(s->copy_command_list);
+ if (FAILED(hr)) {
+ av_log(ctx, AV_LOG_ERROR, "Failed to close copy command list\n");
+ return AVERROR(EINVAL);
+ }
+
+ return 0;
+}
+
+static int mestimate_d3d12_config_props(AVFilterLink *outlink)
+{
+ AVFilterContext *ctx = outlink->src;
+ AVFilterLink *inlink = ctx->inputs[0];
+ FilterLink *inl = ff_filter_link(inlink);
+ FilterLink *outl = ff_filter_link(outlink);
+ MEstimateD3D12Context *s = ctx->priv;
+ AVHWFramesContext *hw_frames_ctx;
+ HRESULT hr;
+ int err;
+
+ if (!inl->hw_frames_ctx) {
+ av_log(ctx, AV_LOG_ERROR, "D3D12 hardware frames context required\n");
+ return AVERROR(EINVAL);
+ }
+
+ hw_frames_ctx = (AVHWFramesContext *)inl->hw_frames_ctx->data;
+ if (hw_frames_ctx->format != AV_PIX_FMT_D3D12) {
+ av_log(ctx, AV_LOG_ERROR, "Input must be D3D12 frames\n");
+ return AVERROR(EINVAL);
+ }
+
+ s->hw_frames_ref = av_buffer_ref(inl->hw_frames_ctx);
+ if (!s->hw_frames_ref)
+ return AVERROR(ENOMEM);
+
+ s->frames_ctx = hw_frames_ctx->hwctx;
+ s->hw_device_ref = av_buffer_ref(hw_frames_ctx->device_ref);
+ if (!s->hw_device_ref)
+ return AVERROR(ENOMEM);
+
+ s->device_ctx = ((AVHWDeviceContext *)s->hw_device_ref->data)->hwctx;
+ s->device = s->device_ctx->device;
+
+ // Propagate hardware frames context to output
+ outl->hw_frames_ctx = av_buffer_ref(inl->hw_frames_ctx);
+ if (!outl->hw_frames_ctx)
+ return AVERROR(ENOMEM);
+
+ // Query for ID3D12VideoDevice1 interface from the base video device
+ hr = ID3D12VideoDevice_QueryInterface(s->device_ctx->video_device,
&IID_ID3D12VideoDevice1,
+ (void **)&s->video_device);
+ if (FAILED(hr)) {
+ av_log(ctx, AV_LOG_ERROR, "ID3D12VideoDevice1 interface not
supported\n");
+ return AVERROR(ENOSYS);
+ }
+
+ err = mestimate_d3d12_create_objects(ctx);
+ if (err < 0)
+ return err;
+
+ err = mestimate_d3d12_create_motion_estimator(ctx, inlink->w, inlink->h);
+ if (err < 0)
+ return err;
+
+ s->initialized = 1;
+
+ return 0;
+}
+
+static int mestimate_d3d12_sync_gpu(MEstimateD3D12Context *s)
+{
+ uint64_t completion = ID3D12Fence_GetCompletedValue(s->fence);
+
+ if (completion < s->fence_value) {
+ if (FAILED(ID3D12Fence_SetEventOnCompletion(s->fence, s->fence_value,
s->fence_event)))
+ return AVERROR(EINVAL);
+ WaitForSingleObjectEx(s->fence_event, INFINITE, FALSE);
+ }
+
+ return 0;
+}
+
+static inline void d3d12_barrier_transition(D3D12_RESOURCE_BARRIER *barrier,
+ ID3D12Resource *resource,
+ D3D12_RESOURCE_STATES state_before,
+ D3D12_RESOURCE_STATES state_after)
+{
+ barrier->Type = D3D12_RESOURCE_BARRIER_TYPE_TRANSITION;
+ barrier->Flags = D3D12_RESOURCE_BARRIER_FLAG_NONE;
+ barrier->Transition.pResource = resource;
+ barrier->Transition.Subresource = D3D12_RESOURCE_BARRIER_ALL_SUBRESOURCES;
+ barrier->Transition.StateBefore = state_before;
+ barrier->Transition.StateAfter = state_after;
+}
+
+static void add_mv_data(AVMotionVector *mv, int mb_size,
+ int x, int y, int x_mv, int y_mv, int dir)
+{
+ mv->w = mb_size;
+ mv->h = mb_size;
+ mv->dst_x = x + (mb_size >> 1);
+ mv->dst_y = y + (mb_size >> 1);
+ mv->src_x = x_mv + (mb_size >> 1);
+ mv->src_y = y_mv + (mb_size >> 1);
+ mv->source = dir ? 1 : -1;
+ mv->flags = 0;
+ mv->motion_x = x_mv - x;
+ mv->motion_y = y_mv - y;
+ mv->motion_scale = 1;
+}
+
+static int mestimate_d3d12_read_motion_vectors(AVFilterContext *ctx, AVFrame
*out, int direction)
+{
+ MEstimateD3D12Context *s = ctx->priv;
+ uint8_t *mapped_data = NULL;
+ HRESULT hr;
+ int err = 0;
+ AVFrameSideData *sd;
+ AVMotionVector *mvs;
+ int mb_x, mb_y, mv_idx;
+ int mb_width, mb_height;
+ int16_t *d3d12_mvs;
+ ID3D12Resource *buffer = (direction == 0) ? s->readback_buffer_back :
s->readback_buffer_fwd;
+
+ // Map the readback buffer
+ hr = ID3D12Resource_Map(buffer, 0, NULL, (void **)&mapped_data);
+ if (FAILED(hr)) {
+ av_log(ctx, AV_LOG_ERROR, "Failed to map readback buffer (dir=%d,
hr=0x%lx)\n", direction, (long)hr);
+ return AVERROR(EINVAL);
+ }
+
+ // Get the motion vector side data
+ sd = av_frame_get_side_data(out, AV_FRAME_DATA_MOTION_VECTORS);
+ if (!sd) {
+ av_log(ctx, AV_LOG_ERROR, "No motion vector side data found\n");
+ ID3D12Resource_Unmap(buffer, 0, NULL);
+ return AVERROR(EINVAL);
+ }
+
+ mvs = (AVMotionVector *)sd->data;
+ mb_width = (out->width + s->block_size - 1) / s->block_size;
+ mb_height = (out->height + s->block_size - 1) / s->block_size;
+
+ // Calculate offset for this direction (0 = backward, 1 = forward)
+ mv_idx = direction * mb_width * mb_height;
+
+ // Parse D3D12 motion vector format
+ // According to Microsoft documentation:
+ // - Format: DXGI_FORMAT_R16G16_SINT (2D texture)
+ // - Data: Signed 16-bit integers
+ // - Units: Quarter-PEL (quarter pixel precision)
+ // - Layout: X component in R channel, Y component in G channel
+ // - Storage: 2D array matching block layout
+ //
+ // Each motion vector is stored as two int16_t values (X, Y) in
quarter-pel units
+ // The buffer is organized as a 2D array: [mb_height][mb_width][2]
+
+ d3d12_mvs = (int16_t *)mapped_data;
+
+ for (mb_y = 0; mb_y < mb_height; mb_y++) {
+ for (mb_x = 0; mb_x < mb_width; mb_x++) {
+ const int x_mb = mb_x * s->block_size;
+ const int y_mb = mb_y * s->block_size;
+ const int mv_offset = (mb_y * mb_width + mb_x) * 2;
+
+ // Read motion vector components in quarter-pel units
+ // R component (index 0) = X motion
+ // G component (index 1) = Y motion
+ int16_t mv_x_qpel = d3d12_mvs[mv_offset + 0];
+ int16_t mv_y_qpel = d3d12_mvs[mv_offset + 1];
+
+ // Convert from quarter-pel to full pixel coordinates
+ // Quarter-pel means the value is 4x the actual pixel displacement
+ // So divide by 4 to get pixel displacement
+ int src_x = x_mb + (mv_x_qpel / 4);
+ int src_y = y_mb + (mv_y_qpel / 4);
+
+ // Store the motion vector data
+ // This will set dst (current position) and src (where it came
from)
+ add_mv_data(&mvs[mv_idx++], s->block_size, x_mb, y_mb, src_x,
src_y, direction);
+
+ av_log(ctx, AV_LOG_TRACE, "Block[%d,%d] dir=%d: MV=(%d,%d) qpel ->
(%d,%d) pixels\n",
+ mb_x, mb_y, direction, mv_x_qpel, mv_y_qpel,
+ mv_x_qpel / 4, mv_y_qpel / 4);
+ }
+ }
+
+ ID3D12Resource_Unmap(buffer, 0, NULL);
+
+ av_log(ctx, AV_LOG_DEBUG, "Parsed %d motion vectors for direction %d\n",
+ mb_width * mb_height, direction);
+
+ return err;
+}
+
+static int mestimate_d3d12_filter_frame(AVFilterLink *inlink, AVFrame *frame)
+{
+ AVFilterContext *ctx = inlink->dst;
+ MEstimateD3D12Context *s = ctx->priv;
+ AVFrame *out;
+ AVFrameSideData *sd;
+ AVD3D12VAFrame *cur_hwframe, *prev_hwframe, *next_hwframe = NULL;
+ HRESULT hr;
+ int err;
+ int mb_width, mb_height, mb_count;
+
+ if (!s->initialized) {
+ err = mestimate_d3d12_config_props(ctx->outputs[0]);
+ if (err < 0) {
+ av_frame_free(&frame);
+ return err;
+ }
+ }
+
+ // Manage frame buffer
+ av_frame_free(&s->prev_frame);
+ s->prev_frame = s->cur_frame;
+ s->cur_frame = s->next_frame;
+ s->next_frame = frame;
+
+ if (!s->cur_frame) {
+ s->cur_frame = av_frame_clone(frame);
+ if (!s->cur_frame)
+ return AVERROR(ENOMEM);
+ }
+
+ if (!s->prev_frame)
+ return 0;
+
+ // Clone current frame for output
+ out = av_frame_clone(s->cur_frame);
+ if (!out)
+ return AVERROR(ENOMEM);
+
+ mb_width = (frame->width + s->block_size - 1) / s->block_size;
+ mb_height = (frame->height + s->block_size - 1) / s->block_size;
+ mb_count = mb_width * mb_height;
+
+ // Allocate side data for motion vectors (2 directions)
+ sd = av_frame_new_side_data(out, AV_FRAME_DATA_MOTION_VECTORS,
+ 2 * mb_count * sizeof(AVMotionVector));
+ if (!sd) {
+ av_frame_free(&out);
+ return AVERROR(ENOMEM);
+ }
+
+ // Get hardware frame pointers
+ cur_hwframe = (AVD3D12VAFrame *)s->cur_frame->data[0];
+ prev_hwframe = (AVD3D12VAFrame *)s->prev_frame->data[0];
+ if (s->next_frame)
+ next_hwframe = (AVD3D12VAFrame *)s->next_frame->data[0];
+
+ // Reset command allocator and list ONCE for both estimations
+ hr = ID3D12CommandAllocator_Reset(s->command_allocator);
+ if (FAILED(hr)) {
+ av_log(ctx, AV_LOG_ERROR, "Failed to reset command allocator\n");
+ av_frame_free(&out);
+ return AVERROR(EINVAL);
+ }
+
+ hr = ID3D12VideoEncodeCommandList_Reset(s->command_list,
s->command_allocator);
+ if (FAILED(hr)) {
+ av_log(ctx, AV_LOG_ERROR, "Failed to reset command list\n");
+ av_frame_free(&out);
+ return AVERROR(EINVAL);
+ }
+
+ // Transition current and previous frames to VIDEO_ENCODE_READ
+ D3D12_RESOURCE_BARRIER barriers[3];
+ int barrier_count = 2;
+
+ d3d12_barrier_transition(&barriers[0], cur_hwframe->texture,
+ D3D12_RESOURCE_STATE_COMMON,
D3D12_RESOURCE_STATE_VIDEO_ENCODE_READ);
+ d3d12_barrier_transition(&barriers[1], prev_hwframe->texture,
+ D3D12_RESOURCE_STATE_COMMON,
D3D12_RESOURCE_STATE_VIDEO_ENCODE_READ);
+
+ if (next_hwframe) {
+ d3d12_barrier_transition(&barriers[2], next_hwframe->texture,
+ D3D12_RESOURCE_STATE_COMMON,
D3D12_RESOURCE_STATE_VIDEO_ENCODE_READ);
+ barrier_count = 3;
+ }
+
+ ID3D12VideoEncodeCommandList_ResourceBarrier(s->command_list,
barrier_count, barriers);
+
+ // Backward motion estimation (cur -> prev)
+ D3D12_VIDEO_MOTION_ESTIMATOR_INPUT input_back = {
+ .pInputTexture2D = cur_hwframe->texture,
+ .InputSubresourceIndex = 0,
+ .pReferenceTexture2D = prev_hwframe->texture,
+ .ReferenceSubresourceIndex = 0,
+ .pHintMotionVectorHeap = NULL,
+ };
+
+ D3D12_VIDEO_MOTION_ESTIMATOR_OUTPUT output = {
+ .pMotionVectorHeap = s->motion_vector_heap,
+ };
+
+ ID3D12VideoEncodeCommandList_EstimateMotion(s->command_list,
s->motion_estimator,
+ &output, &input_back);
+
+ D3D12_RESOLVE_VIDEO_MOTION_VECTOR_HEAP_INPUT resolve_input = {
+ .pMotionVectorHeap = s->motion_vector_heap,
+ .PixelWidth = s->cur_frame->width,
+ .PixelHeight = s->cur_frame->height,
+ };
+
+ D3D12_RESOLVE_VIDEO_MOTION_VECTOR_HEAP_OUTPUT resolve_output_back = {
+ .pMotionVectorTexture2D = s->resolved_mv_texture_back,
+ .MotionVectorCoordinate = {.X = 0, .Y = 0, .Z = 0, .SubresourceIndex =
0},
+ };
+
+ ID3D12VideoEncodeCommandList_ResolveMotionVectorHeap(s->command_list,
+ &resolve_output_back,
&resolve_input);
+
+ // Copy resolved texture to readback buffer for CPU access
+ // CopyTextureRegion is not available on video encode command list
+ // We'll need to read directly from the resolved texture after GPU sync
+
+ // Forward motion estimation (cur -> next) if next frame exists
+ if (next_hwframe) {
+ D3D12_VIDEO_MOTION_ESTIMATOR_INPUT input_fwd = {
+ .pInputTexture2D = cur_hwframe->texture,
+ .InputSubresourceIndex = 0,
+ .pReferenceTexture2D = next_hwframe->texture,
+ .ReferenceSubresourceIndex = 0,
+ .pHintMotionVectorHeap = NULL,
+ };
+
+ ID3D12VideoEncodeCommandList_EstimateMotion(s->command_list,
s->motion_estimator,
+ &output, &input_fwd);
+
+ D3D12_RESOLVE_VIDEO_MOTION_VECTOR_HEAP_OUTPUT resolve_output_fwd = {
+ .pMotionVectorTexture2D = s->resolved_mv_texture_fwd,
+ .MotionVectorCoordinate = {.X = 0, .Y = 0, .Z = 0,
.SubresourceIndex = 0},
+ };
+
+ ID3D12VideoEncodeCommandList_ResolveMotionVectorHeap(s->command_list,
+
&resolve_output_fwd, &resolve_input);
+
+ // Copy will be done after command list execution
+ }
+
+ // Transition resources back to COMMON (reuse barriers by swapping states)
+ for (int i = 0; i < barrier_count; i++)
+ FFSWAP(D3D12_RESOURCE_STATES, barriers[i].Transition.StateBefore,
barriers[i].Transition.StateAfter);
+
+ ID3D12VideoEncodeCommandList_ResourceBarrier(s->command_list,
barrier_count, barriers);
+
+ // Close command list ONCE
+ hr = ID3D12VideoEncodeCommandList_Close(s->command_list);
+ if (FAILED(hr)) {
+ av_log(ctx, AV_LOG_ERROR, "Failed to close command list (hr=0x%lx)\n",
(long)hr);
+ av_frame_free(&out);
+ return AVERROR(EINVAL);
+ }
+
+ // Wait for input frame sync
+ hr = ID3D12CommandQueue_Wait(s->command_queue, cur_hwframe->sync_ctx.fence,
+ cur_hwframe->sync_ctx.fence_value);
+ if (FAILED(hr)) {
+ av_log(ctx, AV_LOG_ERROR, "Failed to wait for current frame\n");
+ av_frame_free(&out);
+ return AVERROR(EINVAL);
+ }
+
+ hr = ID3D12CommandQueue_Wait(s->command_queue,
prev_hwframe->sync_ctx.fence,
+ prev_hwframe->sync_ctx.fence_value);
+ if (FAILED(hr)) {
+ av_log(ctx, AV_LOG_ERROR, "Failed to wait for previous frame\n");
+ av_frame_free(&out);
+ return AVERROR(EINVAL);
+ }
+
+ if (next_hwframe) {
+ hr = ID3D12CommandQueue_Wait(s->command_queue,
next_hwframe->sync_ctx.fence,
+ next_hwframe->sync_ctx.fence_value);
+ if (FAILED(hr)) {
+ av_log(ctx, AV_LOG_ERROR, "Failed to wait for next frame\n");
+ av_frame_free(&out);
+ return AVERROR(EINVAL);
+ }
+ }
+
+ // Execute command list ONCE
+ ID3D12CommandQueue_ExecuteCommandLists(s->command_queue, 1,
(ID3D12CommandList **)&s->command_list);
+
+ // Signal completion
+ hr = ID3D12CommandQueue_Signal(s->command_queue, s->fence,
++s->fence_value);
+ if (FAILED(hr)) {
+ av_log(ctx, AV_LOG_ERROR, "Failed to signal fence\n");
+ av_frame_free(&out);
+ return AVERROR(EINVAL);
+ }
+
+ // Wait for GPU to complete
+ err = mestimate_d3d12_sync_gpu(s);
+ if (err < 0) {
+ av_frame_free(&out);
+ return err;
+ }
+
+ // Now copy the resolved textures to readback buffers using graphics
command list
+ hr = ID3D12CommandAllocator_Reset(s->copy_command_allocator);
+ if (FAILED(hr)) {
+ av_log(ctx, AV_LOG_ERROR, "Failed to reset copy command allocator\n");
+ av_frame_free(&out);
+ return AVERROR(EINVAL);
+ }
+
+ hr = ID3D12GraphicsCommandList_Reset(s->copy_command_list,
s->copy_command_allocator, NULL);
+ if (FAILED(hr)) {
+ av_log(ctx, AV_LOG_ERROR, "Failed to reset copy command list\n");
+ av_frame_free(&out);
+ return AVERROR(EINVAL);
+ }
+
+ // Transition resolved textures to COPY_SOURCE state
+ D3D12_RESOURCE_BARRIER copy_barriers[2];
+ int copy_barrier_count = 1;
+
+ d3d12_barrier_transition(©_barriers[0], s->resolved_mv_texture_back,
+ D3D12_RESOURCE_STATE_COMMON,
D3D12_RESOURCE_STATE_COPY_SOURCE);
+
+ if (s->next_frame) {
+ d3d12_barrier_transition(©_barriers[1], s->resolved_mv_texture_fwd,
+ D3D12_RESOURCE_STATE_COMMON,
D3D12_RESOURCE_STATE_COPY_SOURCE);
+ copy_barrier_count = 2;
+ }
+
+ ID3D12GraphicsCommandList_ResourceBarrier(s->copy_command_list,
copy_barrier_count, copy_barriers);
+
+ // Get texture layout for backward copy
+ D3D12_RESOURCE_DESC texture_desc_back;
+ D3D12_PLACED_SUBRESOURCE_FOOTPRINT layout_back;
+ UINT64 row_size_back, total_size_back;
+ UINT num_rows_back;
+
+ // Get the resource description for backward texture
+ s->resolved_mv_texture_back->lpVtbl->GetDesc(s->resolved_mv_texture_back,
&texture_desc_back);
+
+ av_log(ctx, AV_LOG_DEBUG, "Back texture desc: Width=%llu, Height=%u,
Format=%d\n",
+ (unsigned long long)texture_desc_back.Width,
texture_desc_back.Height, texture_desc_back.Format);
+
+ // Get the copyable footprints for the backward texture
+ ID3D12Device_GetCopyableFootprints(s->device, &texture_desc_back, 0, 1, 0,
+ &layout_back, &num_rows_back,
&row_size_back, &total_size_back);
+
+ av_log(ctx, AV_LOG_DEBUG, "Back layout: Offset=%llu, Width=%u, Height=%u,
Depth=%u, RowPitch=%u\n",
+ (unsigned long long)layout_back.Offset,
layout_back.Footprint.Width, layout_back.Footprint.Height,
+ layout_back.Footprint.Depth, layout_back.Footprint.RowPitch);
+
+ // Copy backward motion vectors
+ D3D12_TEXTURE_COPY_LOCATION src_back = {
+ .pResource = s->resolved_mv_texture_back,
+ .Type = D3D12_TEXTURE_COPY_TYPE_SUBRESOURCE_INDEX,
+ .SubresourceIndex = 0
+ };
+
+ D3D12_TEXTURE_COPY_LOCATION dst_back = {
+ .pResource = s->readback_buffer_back,
+ .Type = D3D12_TEXTURE_COPY_TYPE_PLACED_FOOTPRINT,
+ .PlacedFootprint = {
+ .Offset = 0,
+ .Footprint = layout_back.Footprint
+ }
+ };
+
+ av_log(ctx, AV_LOG_DEBUG, "Copying backward MVs...\n");
+ ID3D12GraphicsCommandList_CopyTextureRegion(s->copy_command_list,
&dst_back, 0, 0, 0, &src_back, NULL);
+
+ // Copy forward motion vectors if available
+ if (s->next_frame) {
+ // Get texture layout for forward copy
+ D3D12_RESOURCE_DESC texture_desc_fwd;
+ D3D12_PLACED_SUBRESOURCE_FOOTPRINT layout_fwd;
+ UINT64 row_size_fwd, total_size_fwd;
+ UINT num_rows_fwd;
+
+ // Get the resource description for forward texture
+
s->resolved_mv_texture_fwd->lpVtbl->GetDesc(s->resolved_mv_texture_fwd,
&texture_desc_fwd);
+
+ av_log(ctx, AV_LOG_DEBUG, "Fwd texture desc: Width=%llu, Height=%u,
Format=%d\n",
+ (unsigned long long)texture_desc_fwd.Width,
texture_desc_fwd.Height, texture_desc_fwd.Format);
+
+ // Get the copyable footprints for the forward texture
+ ID3D12Device_GetCopyableFootprints(s->device, &texture_desc_fwd, 0, 1,
0,
+ &layout_fwd, &num_rows_fwd,
&row_size_fwd, &total_size_fwd);
+
+ av_log(ctx, AV_LOG_DEBUG, "Fwd layout: Offset=%llu, Width=%u,
Height=%u, Depth=%u, RowPitch=%u\n",
+ (unsigned long long)layout_fwd.Offset,
layout_fwd.Footprint.Width, layout_fwd.Footprint.Height,
+ layout_fwd.Footprint.Depth, layout_fwd.Footprint.RowPitch);
+
+ D3D12_TEXTURE_COPY_LOCATION src_fwd = {
+ .pResource = s->resolved_mv_texture_fwd,
+ .Type = D3D12_TEXTURE_COPY_TYPE_SUBRESOURCE_INDEX,
+ .SubresourceIndex = 0
+ };
+
+ D3D12_TEXTURE_COPY_LOCATION dst_fwd = {
+ .pResource = s->readback_buffer_fwd,
+ .Type = D3D12_TEXTURE_COPY_TYPE_PLACED_FOOTPRINT,
+ .PlacedFootprint = {
+ .Offset = 0,
+ .Footprint = layout_fwd.Footprint
+ }
+ };
+
+ av_log(ctx, AV_LOG_DEBUG, "Copying forward MVs...\n");
+ ID3D12GraphicsCommandList_CopyTextureRegion(s->copy_command_list,
&dst_fwd, 0, 0, 0, &src_fwd, NULL);
+ }
+
+ // Transition back to COMMON state (reuse barriers by swapping states)
+ for (int i = 0; i < copy_barrier_count; i++)
+ FFSWAP(D3D12_RESOURCE_STATES, copy_barriers[i].Transition.StateBefore,
copy_barriers[i].Transition.StateAfter);
+
+ ID3D12GraphicsCommandList_ResourceBarrier(s->copy_command_list,
copy_barrier_count, copy_barriers);
+
+ hr = ID3D12GraphicsCommandList_Close(s->copy_command_list);
+ if (FAILED(hr)) {
+ av_log(ctx, AV_LOG_ERROR, "Failed to close copy command list
(hr=0x%lx)\n", (long)hr);
+ av_frame_free(&out);
+ return AVERROR(EINVAL);
+ }
+
+ // Execute copy command list on the copy queue
+ ID3D12CommandQueue_ExecuteCommandLists(s->copy_command_queue, 1,
(ID3D12CommandList **)&s->copy_command_list);
+
+ // Signal and wait for copy completion
+ hr = ID3D12CommandQueue_Signal(s->copy_command_queue, s->fence,
++s->fence_value);
+ if (FAILED(hr)) {
+ av_log(ctx, AV_LOG_ERROR, "Failed to signal fence for copy\n");
+ av_frame_free(&out);
+ return AVERROR(EINVAL);
+ }
+
+ err = mestimate_d3d12_sync_gpu(s);
+ if (err < 0) {
+ av_frame_free(&out);
+ return err;
+ }
+
+ // Read motion vectors for both directions
+ err = mestimate_d3d12_read_motion_vectors(ctx, out, 0);
+ if (err < 0) {
+ av_frame_free(&out);
+ return err;
+ }
+
+ if (s->next_frame) {
+ err = mestimate_d3d12_read_motion_vectors(ctx, out, 1);
+ if (err < 0) {
+ av_frame_free(&out);
+ return err;
+ }
+ }
+
+ return ff_filter_frame(ctx->outputs[0], out);
+}
+
+static av_cold void mestimate_d3d12_uninit(AVFilterContext *ctx)
+{
+ MEstimateD3D12Context *s = ctx->priv;
+
+ av_frame_free(&s->prev_frame);
+ av_frame_free(&s->cur_frame);
+ av_frame_free(&s->next_frame);
+
+ D3D12_OBJECT_RELEASE(s->copy_command_list);
+ D3D12_OBJECT_RELEASE(s->copy_command_allocator);
+ D3D12_OBJECT_RELEASE(s->copy_command_queue);
+ D3D12_OBJECT_RELEASE(s->readback_buffer_back);
+ D3D12_OBJECT_RELEASE(s->readback_buffer_fwd);
+ D3D12_OBJECT_RELEASE(s->resolved_mv_texture_back);
+ D3D12_OBJECT_RELEASE(s->resolved_mv_texture_fwd);
+ D3D12_OBJECT_RELEASE(s->motion_vector_heap);
+ D3D12_OBJECT_RELEASE(s->motion_estimator);
+ D3D12_OBJECT_RELEASE(s->command_list);
+ D3D12_OBJECT_RELEASE(s->command_allocator);
+ D3D12_OBJECT_RELEASE(s->command_queue);
+ D3D12_OBJECT_RELEASE(s->fence);
+
+ if (s->fence_event)
+ CloseHandle(s->fence_event);
+
+ av_buffer_unref(&s->hw_frames_ref);
+ av_buffer_unref(&s->hw_device_ref);
+}
+
+static const AVFilterPad mestimate_d3d12_inputs[] = {
+ {
+ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .filter_frame = mestimate_d3d12_filter_frame,
+ },
+};
+
+static const AVFilterPad mestimate_d3d12_outputs[] = {
+ {
+ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .config_props = mestimate_d3d12_config_props,
+ },
+};
+
+#define OFFSET(x) offsetof(MEstimateD3D12Context, x)
+#define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
+
+static const AVOption mestimate_d3d12_options[] = {
+ { "mb_size", "macroblock size", OFFSET(block_size), AV_OPT_TYPE_INT, {.i64
= 16}, 8, 16, FLAGS, .unit = "mb_size" },
+ { "8", "8x8 blocks", 0, AV_OPT_TYPE_CONST, {.i64 = 8}, 0, 0, FLAGS,
.unit = "mb_size" },
+ { "16", "16x16 blocks", 0, AV_OPT_TYPE_CONST, {.i64 = 16}, 0, 0, FLAGS,
.unit = "mb_size" },
+ { NULL }
+};
+
+AVFILTER_DEFINE_CLASS(mestimate_d3d12);
+
+const FFFilter ff_vf_mestimate_d3d12 = {
+ .p.name = "mestimate_d3d12",
+ .p.description = NULL_IF_CONFIG_SMALL("Generate motion vectors using
D3D12 hardware acceleration."),
+ .p.priv_class = &mestimate_d3d12_class,
+ .p.flags = AVFILTER_FLAG_METADATA_ONLY | AVFILTER_FLAG_HWDEVICE,
+ .priv_size = sizeof(MEstimateD3D12Context),
+ .init = mestimate_d3d12_init,
+ .uninit = mestimate_d3d12_uninit,
+ .flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
+ FILTER_INPUTS(mestimate_d3d12_inputs),
+ FILTER_SINGLE_PIXFMT(AV_PIX_FMT_D3D12),
+ FILTER_OUTPUTS(mestimate_d3d12_outputs),
+};
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