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/*
* This file is part of mpv.
*
* mpv 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.
*
* mpv 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 mpv. If not, see <http://www.gnu.org/licenses/>.
*/
#include <windows.h>
#include <d3d11.h>
#include <d3d11_1.h>
#include "config.h"
#include "common/common.h"
#include "osdep/windows_utils.h"
#include "video/hwdec.h"
#include "video/decode/d3d.h"
#include "video/out/d3d11/ra_d3d11.h"
#include "video/out/gpu/hwdec.h"
struct priv_owner {
struct mp_hwdec_ctx hwctx;
ID3D11Device *device;
ID3D11Device1 *device1;
};
struct priv {
ID3D11DeviceContext1 *ctx;
ID3D11Texture2D *copy_tex;
};
static void uninit(struct ra_hwdec *hw)
{
struct priv_owner *p = hw->priv;
if (p->hwctx.ctx)
hwdec_devices_remove(hw->devs, &p->hwctx);
SAFE_RELEASE(p->device);
SAFE_RELEASE(p->device1);
}
static int init(struct ra_hwdec *hw)
{
struct priv_owner *p = hw->priv;
HRESULT hr;
if (!ra_is_d3d11(hw->ra))
return -1;
p->device = ra_d3d11_get_device(hw->ra);
if (!p->device)
return -1;
// D3D11VA requires Direct3D 11.1, so this should always succeed
hr = ID3D11Device_QueryInterface(p->device, &IID_ID3D11Device1,
(void**)&p->device1);
if (FAILED(hr)) {
MP_ERR(hw, "Failed to get D3D11.1 interface: %s\n",
mp_HRESULT_to_str(hr));
return -1;
}
ID3D10Multithread *multithread;
hr = ID3D11Device_QueryInterface(p->device, &IID_ID3D10Multithread,
(void **)&multithread);
if (FAILED(hr)) {
MP_ERR(hw, "Failed to get Multithread interface: %s\n",
mp_HRESULT_to_str(hr));
return -1;
}
ID3D10Multithread_SetMultithreadProtected(multithread, TRUE);
ID3D10Multithread_Release(multithread);
p->hwctx = (struct mp_hwdec_ctx){
.type = HWDEC_D3D11VA,
.driver_name = hw->driver->name,
.ctx = p->device,
.av_device_ref = d3d11_wrap_device_ref(p->device),
};
hwdec_devices_add(hw->devs, &p->hwctx);
return 0;
}
static void mapper_uninit(struct ra_hwdec_mapper *mapper)
{
struct priv *p = mapper->priv;
for (int i = 0; i < 4; i++)
ra_tex_free(mapper->ra, &mapper->tex[i]);
SAFE_RELEASE(p->copy_tex);
SAFE_RELEASE(p->ctx);
}
static int mapper_init(struct ra_hwdec_mapper *mapper)
{
struct priv_owner *o = mapper->owner->priv;
struct priv *p = mapper->priv;
HRESULT hr;
mapper->dst_params = mapper->src_params;
mapper->dst_params.imgfmt = mapper->src_params.hw_subfmt;
mapper->dst_params.hw_subfmt = 0;
struct ra_imgfmt_desc desc = {0};
struct mp_image layout = {0};
if (!ra_get_imgfmt_desc(mapper->ra, mapper->dst_params.imgfmt, &desc))
return -1;
mp_image_set_params(&layout, &mapper->dst_params);
DXGI_FORMAT copy_fmt;
switch (mapper->dst_params.imgfmt) {
case IMGFMT_NV12: copy_fmt = DXGI_FORMAT_NV12; break;
case IMGFMT_P010: copy_fmt = DXGI_FORMAT_P010; break;
default: return -1;
}
// We copy decoder images to an intermediate texture. This is slower than
// the zero-copy path, but according to MSDN, decoder textures should not
// be bound to SRVs, so it is technically correct, and it works around some
// driver "bugs" that can happen with the zero-copy path. It also allows
// samplers to work correctly when the decoder image includes padding.
D3D11_TEXTURE2D_DESC copy_desc = {
.Width = mapper->dst_params.w,
.Height = mapper->dst_params.h,
.MipLevels = 1,
.ArraySize = 1,
.SampleDesc.Count = 1,
.Format = copy_fmt,
.BindFlags = D3D11_BIND_SHADER_RESOURCE,
};
hr = ID3D11Device_CreateTexture2D(o->device, ©_desc, NULL, &p->copy_tex);
if (FAILED(hr)) {
MP_FATAL(mapper, "Could not create shader resource texture\n");
return -1;
}
for (int i = 0; i < desc.num_planes; i++) {
mapper->tex[i] = ra_d3d11_wrap_tex_video(mapper->ra, p->copy_tex,
mp_image_plane_w(&layout, i),
mp_image_plane_h(&layout, i),
desc.planes[i]);
if (!mapper->tex[i]) {
MP_FATAL(mapper, "Could not create RA texture view\n");
return -1;
}
}
ID3D11Device1_GetImmediateContext1(o->device1, &p->ctx);
return 0;
}
static int mapper_map(struct ra_hwdec_mapper *mapper)
{
struct priv *p = mapper->priv;
ID3D11Texture2D *tex = (void *)mapper->src->planes[0];
int subresource = (intptr_t)mapper->src->planes[1];
ID3D11DeviceContext1_CopySubresourceRegion1(p->ctx,
(ID3D11Resource *)p->copy_tex, 0, 0, 0, 0,
(ID3D11Resource *)tex, subresource, (&(D3D11_BOX) {
.left = 0,
.top = 0,
.front = 0,
.right = mapper->dst_params.w,
.bottom = mapper->dst_params.h,
.back = 1,
}), D3D11_COPY_DISCARD);
return 0;
}
const struct ra_hwdec_driver ra_hwdec_d3d11va = {
.name = "d3d11va",
.priv_size = sizeof(struct priv_owner),
.api = HWDEC_D3D11VA,
.imgfmts = {IMGFMT_D3D11VA, IMGFMT_D3D11NV12, 0},
.init = init,
.uninit = uninit,
.mapper = &(const struct ra_hwdec_mapper_driver){
.priv_size = sizeof(struct priv),
.init = mapper_init,
.uninit = mapper_uninit,
.map = mapper_map,
},
};
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