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mpv/video/decode/dxva2.c

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/*
* Ported from FFmpeg ffmpeg_dxva2.c (2dbee1a3935a91842c22eb65fd13f77e8d590e07).
* Original copyright header follows:
*
* 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 <windows.h>
#define DXVA2API_USE_BITFIELDS
#include <stdint.h>
#include <d3d9.h>
#include <dxva2api.h>
#include <libavcodec/dxva2.h>
#include "lavc.h"
#include "common/common.h"
#include "common/av_common.h"
#include "video/fmt-conversion.h"
#include "video/mp_image_pool.h"
#include "video/hwdec.h"
#include "gpu_memcpy_sse4.h"
// A minor evil.
#ifndef FF_DXVA2_WORKAROUND_INTEL_CLEARVIDEO
#define FF_DXVA2_WORKAROUND_INTEL_CLEARVIDEO 2
#endif
/* define all the GUIDs used directly here,
to avoid problems with inconsistent dxva2api.h versions in mingw-w64 and different MSVC version */
#include <initguid.h>
DEFINE_GUID(IID_IDirectXVideoDecoderService, 0xfc51a551,0xd5e7,0x11d9,0xaf,0x55,0x00,0x05,0x4e,0x43,0xff,0x02);
DEFINE_GUID(DXVA2_ModeMPEG2_VLD, 0xee27417f, 0x5e28,0x4e65,0xbe,0xea,0x1d,0x26,0xb5,0x08,0xad,0xc9);
DEFINE_GUID(DXVA2_ModeMPEG2and1_VLD, 0x86695f12, 0x340e,0x4f04,0x9f,0xd3,0x92,0x53,0xdd,0x32,0x74,0x60);
DEFINE_GUID(DXVA2_ModeH264_E, 0x1b81be68, 0xa0c7,0x11d3,0xb9,0x84,0x00,0xc0,0x4f,0x2e,0x73,0xc5);
DEFINE_GUID(DXVA2_ModeH264_F, 0x1b81be69, 0xa0c7,0x11d3,0xb9,0x84,0x00,0xc0,0x4f,0x2e,0x73,0xc5);
DEFINE_GUID(DXVADDI_Intel_ModeH264_E, 0x604F8E68, 0x4951,0x4C54,0x88,0xFE,0xAB,0xD2,0x5C,0x15,0xB3,0xD6);
DEFINE_GUID(DXVA2_ModeVC1_D, 0x1b81beA3, 0xa0c7,0x11d3,0xb9,0x84,0x00,0xc0,0x4f,0x2e,0x73,0xc5);
DEFINE_GUID(DXVA2_ModeVC1_D2010, 0x1b81beA4, 0xa0c7,0x11d3,0xb9,0x84,0x00,0xc0,0x4f,0x2e,0x73,0xc5);
DEFINE_GUID(DXVA2_NoEncrypt, 0x1b81beD0, 0xa0c7,0x11d3,0xb9,0x84,0x00,0xc0,0x4f,0x2e,0x73,0xc5);
DEFINE_GUID(GUID_NULL, 0x00000000, 0x0000,0x0000,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00);
typedef IDirect3D9* WINAPI pDirect3DCreate9(UINT);
typedef HRESULT WINAPI pCreateDeviceManager9(UINT *, IDirect3DDeviceManager9 **);
typedef struct dxva2_mode {
const GUID *guid;
enum AVCodecID codec;
} dxva2_mode;
static const dxva2_mode dxva2_modes[] = {
/* MPEG-2 */
{ &DXVA2_ModeMPEG2_VLD, AV_CODEC_ID_MPEG2VIDEO },
{ &DXVA2_ModeMPEG2and1_VLD, AV_CODEC_ID_MPEG2VIDEO },
/* H.264 */
{ &DXVA2_ModeH264_F, AV_CODEC_ID_H264 },
{ &DXVA2_ModeH264_E, AV_CODEC_ID_H264 },
/* Intel specific H.264 mode */
{ &DXVADDI_Intel_ModeH264_E, AV_CODEC_ID_H264 },
/* VC-1 / WMV3 */
{ &DXVA2_ModeVC1_D2010, AV_CODEC_ID_VC1 },
{ &DXVA2_ModeVC1_D2010, AV_CODEC_ID_WMV3 },
{ &DXVA2_ModeVC1_D, AV_CODEC_ID_VC1 },
{ &DXVA2_ModeVC1_D, AV_CODEC_ID_WMV3 },
{ NULL, 0 },
};
typedef struct surface_info {
int used;
uint64_t age;
} surface_info;
typedef struct DXVA2Context {
struct mp_log *log;
void (*copy_nv12)(struct mp_image *dest, uint8_t *src_bits,
unsigned src_pitch, unsigned surf_height);
HMODULE d3dlib;
HMODULE dxva2lib;
HANDLE deviceHandle;
IDirect3D9 *d3d9;
IDirect3DDevice9 *d3d9device;
IDirect3DDeviceManager9 *d3d9devmgr;
IDirectXVideoDecoderService *decoder_service;
IDirectXVideoDecoder *decoder;
GUID decoder_guid;
DXVA2_ConfigPictureDecode decoder_config;
LPDIRECT3DSURFACE9 *surfaces;
surface_info *surface_infos;
uint32_t num_surfaces;
uint64_t surface_age;
struct mp_image_pool *sw_pool;
struct dxva_context *av_dxva_ctx;
} DXVA2Context;
typedef struct DXVA2SurfaceWrapper {
DXVA2Context *ctx;
LPDIRECT3DSURFACE9 surface;
IDirectXVideoDecoder *decoder;
} DXVA2SurfaceWrapper;
static void dxva2_destroy_decoder(struct lavc_ctx *s)
{
DXVA2Context *ctx = s->hwdec_priv;
int i;
if (ctx->surfaces) {
for (i = 0; i < ctx->num_surfaces; i++) {
if (ctx->surfaces[i])
IDirect3DSurface9_Release(ctx->surfaces[i]);
}
}
av_freep(&ctx->surfaces);
av_freep(&ctx->surface_infos);
ctx->num_surfaces = 0;
ctx->surface_age = 0;
if (ctx->decoder) {
IDirectXVideoDecoder_Release(ctx->decoder);
ctx->decoder = NULL;
}
}
static void dxva2_uninit(struct lavc_ctx *s)
{
DXVA2Context *ctx = s->hwdec_priv;
if (!ctx)
return;
if (ctx->decoder)
dxva2_destroy_decoder(s);
if (ctx->decoder_service)
IDirectXVideoDecoderService_Release(ctx->decoder_service);
if (ctx->d3d9devmgr && ctx->deviceHandle != INVALID_HANDLE_VALUE)
IDirect3DDeviceManager9_CloseDeviceHandle(ctx->d3d9devmgr, ctx->deviceHandle);
if (ctx->d3d9devmgr)
IDirect3DDeviceManager9_Release(ctx->d3d9devmgr);
if (ctx->d3d9device)
IDirect3DDevice9_Release(ctx->d3d9device);
if (ctx->d3d9)
IDirect3D9_Release(ctx->d3d9);
if (ctx->d3dlib)
FreeLibrary(ctx->d3dlib);
if (ctx->dxva2lib)
FreeLibrary(ctx->dxva2lib);
av_freep(&s->avctx->hwaccel_context);
talloc_free(ctx);
s->hwdec_priv = NULL;
}
static void dxva2_release_img(void *ptr)
{
DXVA2SurfaceWrapper *w = ptr;
DXVA2Context *ctx = w->ctx;
int i;
for (i = 0; i < ctx->num_surfaces; i++) {
if (ctx->surfaces[i] == w->surface) {
ctx->surface_infos[i].used = 0;
break;
}
}
IDirect3DSurface9_Release(w->surface);
IDirectXVideoDecoder_Release(w->decoder);
av_free(w);
}
static struct mp_image *dxva2_allocate_image(struct lavc_ctx *s, int fmt,
int img_w, int img_h)
{
DXVA2Context *ctx = s->hwdec_priv;
if (fmt != IMGFMT_DXVA2)
return NULL;
int i, old_unused = -1;
for (i = 0; i < ctx->num_surfaces; i++) {
surface_info *info = &ctx->surface_infos[i];
if (!info->used && (old_unused == -1 || info->age < ctx->surface_infos[old_unused].age))
old_unused = i;
}
if (old_unused == -1) {
MP_ERR(ctx, "No free DXVA2 surface!\n");
return NULL;
}
i = old_unused;
DXVA2SurfaceWrapper *w = av_mallocz(sizeof(*w));
if (!w)
return NULL;
w->ctx = ctx;
w->surface = ctx->surfaces[i];;
IDirect3DSurface9_AddRef(w->surface);
w->decoder = ctx->decoder;
IDirectXVideoDecoder_AddRef(w->decoder);
ctx->surface_infos[i].used = 1;
ctx->surface_infos[i].age = ctx->surface_age++;
struct mp_image mpi = {0};
mp_image_setfmt(&mpi, IMGFMT_DXVA2);
mp_image_set_size(&mpi, img_w, img_h);
mpi.planes[3] = (void *)w->surface;
return mp_image_new_custom_ref(&mpi, w, dxva2_release_img);
}
static void copy_nv12_fallback(struct mp_image *dest, uint8_t *src_bits,
unsigned src_pitch, unsigned surf_height)
{
struct mp_image buf = {0};
mp_image_setfmt(&buf, IMGFMT_NV12);
mp_image_set_size(&buf, dest->w, dest->h);
buf.planes[0] = src_bits;
buf.stride[0] = src_pitch;
buf.planes[1] = src_bits + src_pitch * surf_height;
buf.stride[1] = src_pitch;
mp_image_copy(dest, &buf);
}
static void copy_nv12_gpu_sse4(struct mp_image *dest, uint8_t *src_bits,
unsigned src_pitch, unsigned surf_height)
{
const int lines = dest->h;
const int stride_y = dest->stride[0];
const int stride_uv = dest->stride[1];
// If the strides match, the image can be copied in one go
if (stride_y == src_pitch && stride_uv == src_pitch) {
const size_t size = lines * src_pitch;
gpu_memcpy(dest->planes[0], src_bits, size);
gpu_memcpy(dest->planes[1], src_bits + src_pitch * surf_height, size / 2);
} else {
// Copy the Y plane line-by-line
uint8_t *dest_y = dest->planes[0];
const uint8_t *src_y = src_bits;
const int bytes_per_line = dest->w;
for (int i = 0; i < lines; i++) {
gpu_memcpy(dest_y, src_y, bytes_per_line);
dest_y += stride_y;
src_y += src_pitch;
}
// Copy the UV plane line-by-line
uint8_t *dest_uv = dest->planes[1];
const uint8_t *src_uv = src_bits + src_pitch * surf_height;
for (int i = 0; i < lines / 2; i++) {
gpu_memcpy(dest_uv, src_uv, bytes_per_line);
dest_uv += stride_uv;
src_uv += src_pitch;
}
}
}
static struct mp_image *dxva2_retrieve_image(struct lavc_ctx *s,
struct mp_image *img)
{
DXVA2Context *ctx = s->hwdec_priv;
LPDIRECT3DSURFACE9 surface = (LPDIRECT3DSURFACE9)img->planes[3];
D3DSURFACE_DESC surfaceDesc;
D3DLOCKED_RECT LockedRect;
HRESULT hr;
IDirect3DSurface9_GetDesc(surface, &surfaceDesc);
struct mp_image *sw_img =
mp_image_pool_get(ctx->sw_pool, IMGFMT_NV12, img->w, img->h);
if (!sw_img)
return img;
hr = IDirect3DSurface9_LockRect(surface, &LockedRect, NULL, D3DLOCK_READONLY);
if (FAILED(hr)) {
MP_ERR(ctx, "Unable to lock DXVA2 surface\n");
talloc_free(sw_img);
return img;
}
ctx->copy_nv12(sw_img, LockedRect.pBits, LockedRect.Pitch, surfaceDesc.Height);
mp_image_copy_attributes(sw_img, img);
IDirect3DSurface9_UnlockRect(surface);
talloc_free(img);
return sw_img;
}
static int dxva2_init(struct lavc_ctx *s)
{
DXVA2Context *ctx;
pDirect3DCreate9 *createD3D = NULL;
pCreateDeviceManager9 *createDeviceManager = NULL;
HRESULT hr;
D3DPRESENT_PARAMETERS d3dpp = {0};
D3DDISPLAYMODE d3ddm;
unsigned resetToken = 0;
UINT adapter = D3DADAPTER_DEFAULT;
ctx = talloc_zero(NULL, DXVA2Context);
if (!ctx)
return -1;
s->hwdec_priv = ctx;
ctx->log = mp_log_new(s, s->log, "dxva2");
ctx->sw_pool = talloc_steal(ctx, mp_image_pool_new(17));
if (av_get_cpu_flags() & AV_CPU_FLAG_SSE4) {
// Use a memcpy implementation optimised for copying from GPU memory
MP_DBG(ctx, "Using SSE4 memcpy\n");
ctx->copy_nv12 = copy_nv12_gpu_sse4;
} else {
// Use the CRT memcpy. This can be slower than software decoding.
MP_WARN(ctx, "Using fallback memcpy (slow)\n");
ctx->copy_nv12 = copy_nv12_fallback;
}
ctx->deviceHandle = INVALID_HANDLE_VALUE;
ctx->d3dlib = LoadLibrary(L"d3d9.dll");
if (!ctx->d3dlib) {
MP_ERR(ctx, "Failed to load D3D9 library\n");
goto fail;
}
ctx->dxva2lib = LoadLibrary(L"dxva2.dll");
if (!ctx->dxva2lib) {
MP_ERR(ctx, "Failed to load DXVA2 library\n");
goto fail;
}
createD3D = (pDirect3DCreate9 *)GetProcAddress(ctx->d3dlib, "Direct3DCreate9");
if (!createD3D) {
MP_ERR(ctx, "Failed to locate Direct3DCreate9\n");
goto fail;
}
createDeviceManager = (pCreateDeviceManager9 *)GetProcAddress(ctx->dxva2lib, "DXVA2CreateDirect3DDeviceManager9");
if (!createDeviceManager) {
MP_ERR(ctx, "Failed to locate DXVA2CreateDirect3DDeviceManager9\n");
goto fail;
}
ctx->d3d9 = createD3D(D3D_SDK_VERSION);
if (!ctx->d3d9) {
MP_ERR(ctx, "Failed to create IDirect3D object\n");
goto fail;
}
IDirect3D9_GetAdapterDisplayMode(ctx->d3d9, adapter, &d3ddm);
d3dpp.Windowed = TRUE;
d3dpp.BackBufferWidth = 640;
d3dpp.BackBufferHeight = 480;
d3dpp.BackBufferCount = 0;
d3dpp.BackBufferFormat = d3ddm.Format;
d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD;
d3dpp.Flags = D3DPRESENTFLAG_VIDEO;
hr = IDirect3D9_CreateDevice(ctx->d3d9, adapter, D3DDEVTYPE_HAL, GetShellWindow(),
D3DCREATE_SOFTWARE_VERTEXPROCESSING | D3DCREATE_MULTITHREADED | D3DCREATE_FPU_PRESERVE,
&d3dpp, &ctx->d3d9device);
if (FAILED(hr)) {
MP_ERR(ctx, "Failed to create Direct3D device\n");
goto fail;
}
hr = createDeviceManager(&resetToken, &ctx->d3d9devmgr);
if (FAILED(hr)) {
MP_ERR(ctx, "Failed to create Direct3D device manager\n");
goto fail;
}
hr = IDirect3DDeviceManager9_ResetDevice(ctx->d3d9devmgr, ctx->d3d9device, resetToken);
if (FAILED(hr)) {
MP_ERR(ctx, "Failed to bind Direct3D device to device manager\n");
goto fail;
}
hr = IDirect3DDeviceManager9_OpenDeviceHandle(ctx->d3d9devmgr, &ctx->deviceHandle);
if (FAILED(hr)) {
MP_ERR(ctx, "Failed to open device handle\n");
goto fail;
}
hr = IDirect3DDeviceManager9_GetVideoService(ctx->d3d9devmgr, ctx->deviceHandle, &IID_IDirectXVideoDecoderService, (void **)&ctx->decoder_service);
if (FAILED(hr)) {
MP_ERR(ctx, "Failed to create IDirectXVideoDecoderService\n");
goto fail;
}
s->avctx->hwaccel_context = av_mallocz(sizeof(struct dxva_context));
if (!s->avctx->hwaccel_context)
goto fail;
return 0;
fail:
dxva2_uninit(s);
return -1;
}
static int dxva2_get_decoder_configuration(struct lavc_ctx *s,
enum AVCodecID codec_id,
const GUID *device_guid,
const DXVA2_VideoDesc *desc,
DXVA2_ConfigPictureDecode *config)
{
DXVA2Context *ctx = s->hwdec_priv;
unsigned cfg_count = 0, best_score = 0;
DXVA2_ConfigPictureDecode *cfg_list = NULL;
DXVA2_ConfigPictureDecode best_cfg = {{0}};
HRESULT hr;
int i;
hr = IDirectXVideoDecoderService_GetDecoderConfigurations(ctx->decoder_service, device_guid, desc, NULL, &cfg_count, &cfg_list);
if (FAILED(hr)) {
MP_ERR(ctx, "Unable to retrieve decoder configurations\n");
return -1;
}
for (i = 0; i < cfg_count; i++) {
DXVA2_ConfigPictureDecode *cfg = &cfg_list[i];
unsigned score;
if (cfg->ConfigBitstreamRaw == 1)
score = 1;
else if (codec_id == AV_CODEC_ID_H264 && cfg->ConfigBitstreamRaw == 2)
score = 2;
else
continue;
if (IsEqualGUID(&cfg->guidConfigBitstreamEncryption, &DXVA2_NoEncrypt))
score += 16;
if (score > best_score) {
best_score = score;
best_cfg = *cfg;
}
}
CoTaskMemFree(cfg_list);
if (!best_score) {
MP_ERR(ctx, "No valid decoder configuration available\n");
return -1;
}
*config = best_cfg;
return 0;
}
static int dxva2_create_decoder(struct lavc_ctx *s, int w, int h,
enum AVCodecID codec_id, int profile)
{
DXVA2Context *ctx = s->hwdec_priv;
struct dxva_context *dxva_ctx = s->avctx->hwaccel_context;
GUID *guid_list = NULL;
unsigned guid_count = 0, i, j;
GUID device_guid = GUID_NULL;
D3DFORMAT target_format = 0;
DXVA2_VideoDesc desc = { 0 };
DXVA2_ConfigPictureDecode config;
HRESULT hr;
int surface_alignment;
int ret;
hr = IDirectXVideoDecoderService_GetDecoderDeviceGuids(ctx->decoder_service, &guid_count, &guid_list);
if (FAILED(hr)) {
MP_ERR(ctx, "Failed to retrieve decoder device GUIDs\n");
goto fail;
}
for (i = 0; dxva2_modes[i].guid; i++) {
D3DFORMAT *target_list = NULL;
unsigned target_count = 0;
const dxva2_mode *mode = &dxva2_modes[i];
if (mode->codec != codec_id)
continue;
for (j = 0; j < guid_count; j++) {
if (IsEqualGUID(mode->guid, &guid_list[j]))
break;
}
if (j == guid_count)
continue;
hr = IDirectXVideoDecoderService_GetDecoderRenderTargets(ctx->decoder_service, mode->guid, &target_count, &target_list);
if (FAILED(hr)) {
continue;
}
for (j = 0; j < target_count; j++) {
const D3DFORMAT format = target_list[j];
if (format == MKTAG('N','V','1','2')) {
target_format = format;
break;
}
}
CoTaskMemFree(target_list);
if (target_format) {
device_guid = *mode->guid;
break;
}
}
CoTaskMemFree(guid_list);
if (IsEqualGUID(&device_guid, &GUID_NULL)) {
MP_ERR(ctx, "No decoder device for codec found\n");
goto fail;
}
desc.SampleWidth = w;
desc.SampleHeight = h;
desc.Format = target_format;
ret = dxva2_get_decoder_configuration(s, codec_id, &device_guid, &desc, &config);
if (ret < 0) {
goto fail;
}
/* decoding MPEG-2 requires additional alignment on some Intel GPUs,
but it causes issues for H.264 on certain AMD GPUs..... */
if (codec_id == AV_CODEC_ID_MPEG2VIDEO)
surface_alignment = 32;
else
surface_alignment = 16;
/* 4 base work surfaces */
ctx->num_surfaces = 4;
/* add surfaces based on number of possible refs */
if (codec_id == AV_CODEC_ID_H264)
ctx->num_surfaces += 16;
else
ctx->num_surfaces += 2;
ctx->surfaces = av_mallocz(ctx->num_surfaces * sizeof(*ctx->surfaces));
ctx->surface_infos = av_mallocz(ctx->num_surfaces * sizeof(*ctx->surface_infos));
if (!ctx->surfaces || !ctx->surface_infos) {
MP_ERR(ctx, "Unable to allocate surface arrays\n");
goto fail;
}
hr = IDirectXVideoDecoderService_CreateSurface(ctx->decoder_service,
FFALIGN(w, surface_alignment),
FFALIGN(h, surface_alignment),
ctx->num_surfaces - 1,
target_format, D3DPOOL_DEFAULT, 0,
DXVA2_VideoDecoderRenderTarget,
ctx->surfaces, NULL);
if (FAILED(hr)) {
MP_ERR(ctx, "Failed to create %d video surfaces\n", ctx->num_surfaces);
goto fail;
}
hr = IDirectXVideoDecoderService_CreateVideoDecoder(ctx->decoder_service, &device_guid,
&desc, &config, ctx->surfaces,
ctx->num_surfaces, &ctx->decoder);
if (FAILED(hr)) {
MP_ERR(ctx, "Failed to create DXVA2 video decoder\n");
goto fail;
}
ctx->decoder_guid = device_guid;
ctx->decoder_config = config;
dxva_ctx->cfg = &ctx->decoder_config;
dxva_ctx->decoder = ctx->decoder;
dxva_ctx->surface = ctx->surfaces;
dxva_ctx->surface_count = ctx->num_surfaces;
if (IsEqualGUID(&ctx->decoder_guid, &DXVADDI_Intel_ModeH264_E))
dxva_ctx->workaround |= FF_DXVA2_WORKAROUND_INTEL_CLEARVIDEO;
return 0;
fail:
dxva2_destroy_decoder(s);
return -1;
}
static int dxva2_init_decoder(struct lavc_ctx *s, int fmt, int w, int h)
{
DXVA2Context *ctx = s->hwdec_priv;
enum AVCodecID codec = s->avctx->codec_id;
int profile = s->avctx->profile;
if (codec == AV_CODEC_ID_H264 &&
(profile & ~FF_PROFILE_H264_CONSTRAINED) > FF_PROFILE_H264_HIGH)
{
MP_ERR(ctx, "Unsupported H.264 profile for DXVA2 HWAccel: %d\n", profile);
return -1;
}
if (ctx->decoder)
dxva2_destroy_decoder(s);
if (dxva2_create_decoder(s, w, h, codec, profile) < 0) {
MP_ERR(ctx, "Error creating the DXVA2 decoder\n");
return -1;
}
return 0;
}
static int probe(struct vd_lavc_hwdec *hwdec, struct mp_hwdec_info *info,
const char *decoder)
{
for (int i = 0; dxva2_modes[i].guid; i++) {
const dxva2_mode *mode = &dxva2_modes[i];
if (mp_codec_to_av_codec_id(decoder) == mode->codec)
return 0;
}
return HWDEC_ERR_NO_CODEC;
}
const struct vd_lavc_hwdec mp_vd_lavc_dxva2_copy = {
.type = HWDEC_DXVA2_COPY,
.image_format = IMGFMT_DXVA2,
.probe = probe,
.init = dxva2_init,
.uninit = dxva2_uninit,
.init_decoder = dxva2_init_decoder,
.allocate_image = dxva2_allocate_image,
.process_image = dxva2_retrieve_image,
};
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