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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 <d3d9.h>
#include <assert.h>
#include "common/common.h"
#include "osdep/windows_utils.h"
#include "hwdec.h"
#include "video/hwdec.h"
// for WGL_ACCESS_READ_ONLY_NV
#include <GL/wglext.h>
#define SHARED_SURFACE_D3DFMT D3DFMT_X8R8G8B8
#define SHARED_SURFACE_MPFMT IMGFMT_RGB0
struct priv {
struct mp_hwdec_ctx hwctx;
IDirect3DDevice9Ex *device;
HANDLE device_h;
IDirect3DSurface9 *rtarget;
HANDLE rtarget_h;
GLuint texture;
};
static void destroy_objects(struct gl_hwdec *hw)
{
struct priv *p = hw->priv;
GL *gl = hw->gl;
if (p->rtarget_h && p->device_h) {
if (!gl->DXUnlockObjectsNV(p->device_h, 1, &p->rtarget_h)) {
MP_ERR(hw, "Failed unlocking texture for access by OpenGL: %s\n",
mp_LastError_to_str());
}
}
if (p->rtarget_h) {
if (!gl->DXUnregisterObjectNV(p->device_h, p->rtarget_h)) {
MP_ERR(hw, "Failed to unregister Direct3D surface with OpenGL: %s\n",
mp_LastError_to_str());
} else {
p->rtarget_h = 0;
}
}
gl->DeleteTextures(1, &p->texture);
p->texture = 0;
if (p->rtarget) {
IDirect3DSurface9_Release(p->rtarget);
p->rtarget = NULL;
}
}
static void destroy(struct gl_hwdec *hw)
{
struct priv *p = hw->priv;
destroy_objects(hw);
hwdec_devices_remove(hw->devs, &p->hwctx);
if (p->device)
IDirect3DDevice9Ex_Release(p->device);
}
static int create(struct gl_hwdec *hw)
{
GL *gl = hw->gl;
if (!gl->MPGetNativeDisplay || !(gl->mpgl_caps & MPGL_CAP_DXINTEROP))
return -1;
struct priv *p = talloc_zero(hw, struct priv);
hw->priv = p;
// AMD drivers won't open multiple dxinterop HANDLES on the same D3D device,
// so we request the one already in use by context_dxinterop
p->device_h = gl->MPGetNativeDisplay("dxinterop_device_HANDLE");
if (!p->device_h)
return -1;
// But we also still need the actual D3D device
p->device = gl->MPGetNativeDisplay("IDirect3DDevice9Ex");
if (!p->device)
return -1;
IDirect3DDevice9Ex_AddRef(p->device);
p->hwctx = (struct mp_hwdec_ctx){
.type = HWDEC_DXVA2,
.driver_name = hw->driver->name,
.ctx = (IDirect3DDevice9 *)p->device,
};
hwdec_devices_add(hw->devs, &p->hwctx);
return 0;
}
static int reinit(struct gl_hwdec *hw, struct mp_image_params *params)
{
struct priv *p = hw->priv;
GL *gl = hw->gl;
HRESULT hr;
destroy_objects(hw);
HANDLE share_handle = NULL;
hr = IDirect3DDevice9Ex_CreateRenderTarget(
p->device,
params->w, params->h,
SHARED_SURFACE_D3DFMT, D3DMULTISAMPLE_NONE, 0, FALSE,
&p->rtarget, &share_handle);
if (FAILED(hr)) {
MP_ERR(hw, "Failed creating offscreen Direct3D surface: %s\n",
mp_HRESULT_to_str(hr));
goto fail;
}
if (share_handle &&
!gl->DXSetResourceShareHandleNV(p->rtarget, share_handle)) {
MP_ERR(hw, "Failed setting Direct3D/OpenGL share handle for surface: %s\n",
mp_LastError_to_str());
goto fail;
}
gl->GenTextures(1, &p->texture);
gl->BindTexture(GL_TEXTURE_2D, p->texture);
gl->TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
gl->TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
gl->TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
gl->TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
gl->BindTexture(GL_TEXTURE_2D, 0);
p->rtarget_h = gl->DXRegisterObjectNV(p->device_h, p->rtarget, p->texture,
GL_TEXTURE_2D,
WGL_ACCESS_READ_ONLY_NV);
if (!p->rtarget_h) {
MP_ERR(hw, "Failed to register Direct3D surface with OpenGL: %s\n",
mp_LastError_to_str());
goto fail;
}
if (!gl->DXLockObjectsNV(p->device_h, 1, &p->rtarget_h)) {
MP_ERR(hw, "Failed locking texture for access by OpenGL %s\n",
mp_LastError_to_str());
goto fail;
}
params->imgfmt = SHARED_SURFACE_MPFMT;
return 0;
fail:
destroy_objects(hw);
return -1;
}
static int map_frame(struct gl_hwdec *hw, struct mp_image *hw_image,
struct gl_hwdec_frame *out_frame)
{
assert(hw_image && hw_image->imgfmt == hw->driver->imgfmt);
GL *gl = hw->gl;
struct priv *p = hw->priv;
HRESULT hr;
if (!gl->DXUnlockObjectsNV(p->device_h, 1, &p->rtarget_h)) {
MP_ERR(hw, "Failed unlocking texture for access by OpenGL: %s\n",
mp_LastError_to_str());
return -1;
}
IDirect3DSurface9* hw_surface = (IDirect3DSurface9 *)hw_image->planes[3];
RECT rc = {0, 0, hw_image->w, hw_image->h};
hr = IDirect3DDevice9Ex_StretchRect(p->device,
hw_surface, &rc,
p->rtarget, &rc,
D3DTEXF_NONE);
if (FAILED(hr)) {
MP_ERR(hw, "Direct3D RGB conversion failed: %s", mp_HRESULT_to_str(hr));
return -1;
}
if (!gl->DXLockObjectsNV(p->device_h, 1, &p->rtarget_h)) {
MP_ERR(hw, "Failed locking texture for access by OpenGL: %s\n",
mp_LastError_to_str());
return -1;
}
*out_frame = (struct gl_hwdec_frame){
.planes = {
{
.gl_texture = p->texture,
.gl_target = GL_TEXTURE_2D,
.tex_w = hw_image->w,
.tex_h = hw_image->h,
},
},
};
return 0;
}
const struct gl_hwdec_driver gl_hwdec_dxva2gldx = {
.name = "dxva2-dxinterop",
.api = HWDEC_DXVA2,
.imgfmt = IMGFMT_DXVA2,
.create = create,
.reinit = reinit,
.map_frame = map_frame,
.destroy = destroy,
};
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