mpv/video/d3d.c

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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 <pthread.h>
#include "config.h"
#include <libavcodec/avcodec.h>
#include <libavutil/hwcontext.h>
#include <libavutil/hwcontext_d3d11va.h>
#if HAVE_D3D9_HWACCEL
#include <libavutil/hwcontext_dxva2.h>
#endif
#include "common/common.h"
#include "common/av_common.h"
#include "video/fmt-conversion.h"
#include "video/hwdec.h"
#include "video/mp_image.h"
#include "video/mp_image_pool.h"
#include "osdep/windows_utils.h"
#include "d3d.h"
HMODULE d3d11_dll, d3d9_dll, dxva2_dll;
PFN_D3D11_CREATE_DEVICE d3d11_D3D11CreateDevice;
static pthread_once_t d3d_load_once = PTHREAD_ONCE_INIT;
#if !HAVE_UWP
static void d3d_do_load(void)
{
d3d11_dll = LoadLibrary(L"d3d11.dll");
d3d9_dll = LoadLibrary(L"d3d9.dll");
dxva2_dll = LoadLibrary(L"dxva2.dll");
if (d3d11_dll) {
d3d11_D3D11CreateDevice =
(void *)GetProcAddress(d3d11_dll, "D3D11CreateDevice");
}
}
#else
static void d3d_do_load(void)
{
d3d11_D3D11CreateDevice = D3D11CreateDevice;
}
#endif
void d3d_load_dlls(void)
{
pthread_once(&d3d_load_once, d3d_do_load);
}
// Test if Direct3D11 can be used by us. Basically, this prevents trying to use
// D3D11 on Win7, and then failing somewhere in the process.
bool d3d11_check_decoding(ID3D11Device *dev)
{
HRESULT hr;
// We assume that NV12 is always supported, if hw decoding is supported at
// all.
UINT supported = 0;
hr = ID3D11Device_CheckFormatSupport(dev, DXGI_FORMAT_NV12, &supported);
return !FAILED(hr) && (supported & D3D11_BIND_DECODER);
}
static void d3d11_refine_hwframes(AVBufferRef *hw_frames_ctx)
{
AVHWFramesContext *fctx = (void *)hw_frames_ctx->data;
if (fctx->format == AV_PIX_FMT_D3D11) {
AVD3D11VAFramesContext *hwctx = fctx->hwctx;
// According to hwcontex_d3d11va.h, yuv420p means DXGI_FORMAT_420_OPAQUE,
// which has no shader support.
if (fctx->sw_format != AV_PIX_FMT_YUV420P)
hwctx->BindFlags |= D3D11_BIND_SHADER_RESOURCE;
}
}
AVBufferRef *d3d11_wrap_device_ref(ID3D11Device *device)
{
AVBufferRef *device_ref = av_hwdevice_ctx_alloc(AV_HWDEVICE_TYPE_D3D11VA);
if (!device_ref)
return NULL;
AVHWDeviceContext *ctx = (void *)device_ref->data;
AVD3D11VADeviceContext *hwctx = ctx->hwctx;
ID3D11Device_AddRef(device);
hwctx->device = device;
if (av_hwdevice_ctx_init(device_ref) < 0)
av_buffer_unref(&device_ref);
return device_ref;
}
static struct AVBufferRef *d3d11_create_standalone(struct mpv_global *global,
struct mp_log *plog, struct hwcontext_create_dev_params *params)
{
ID3D11Device *device = NULL;
HRESULT hr;
d3d_load_dlls();
if (!d3d11_D3D11CreateDevice) {
mp_err(plog, "Failed to load D3D11 library\n");
return NULL;
}
hr = d3d11_D3D11CreateDevice(NULL, D3D_DRIVER_TYPE_HARDWARE, NULL,
D3D11_CREATE_DEVICE_VIDEO_SUPPORT, NULL, 0,
D3D11_SDK_VERSION, &device, NULL, NULL);
if (FAILED(hr)) {
mp_err(plog, "Failed to create D3D11 Device: %s\n",
mp_HRESULT_to_str(hr));
return NULL;
}
AVBufferRef *avref = d3d11_wrap_device_ref(device);
ID3D11Device_Release(device);
if (!avref)
mp_err(plog, "Failed to allocate AVHWDeviceContext.\n");
return avref;
}
const struct hwcontext_fns hwcontext_fns_d3d11 = {
.av_hwdevice_type = AV_HWDEVICE_TYPE_D3D11VA,
.refine_hwframes = d3d11_refine_hwframes,
.create_dev = d3d11_create_standalone,
};
#if HAVE_D3D9_HWACCEL
#define DXVA2API_USE_BITFIELDS
#include <libavutil/common.h>
#include <libavutil/hwcontext_dxva2.h>
static void d3d9_free_av_device_ref(AVHWDeviceContext *ctx)
{
AVDXVA2DeviceContext *hwctx = ctx->hwctx;
if (hwctx->devmgr)
IDirect3DDeviceManager9_Release(hwctx->devmgr);
}
AVBufferRef *d3d9_wrap_device_ref(IDirect3DDevice9 *device)
{
HRESULT hr;
d3d_load_dlls();
if (!dxva2_dll)
return NULL;
HRESULT (WINAPI *DXVA2CreateDirect3DDeviceManager9)(UINT *, IDirect3DDeviceManager9 **) =
(void *)GetProcAddress(dxva2_dll, "DXVA2CreateDirect3DDeviceManager9");
if (!DXVA2CreateDirect3DDeviceManager9)
return NULL;
AVBufferRef *device_ref = av_hwdevice_ctx_alloc(AV_HWDEVICE_TYPE_DXVA2);
if (!device_ref)
return NULL;
AVHWDeviceContext *ctx = (void *)device_ref->data;
AVDXVA2DeviceContext *hwctx = ctx->hwctx;
UINT reset_token = 0;
hr = DXVA2CreateDirect3DDeviceManager9(&reset_token, &hwctx->devmgr);
if (FAILED(hr))
goto fail;
IDirect3DDeviceManager9_ResetDevice(hwctx->devmgr, device, reset_token);
if (FAILED(hr))
goto fail;
ctx->free = d3d9_free_av_device_ref;
if (av_hwdevice_ctx_init(device_ref) < 0)
goto fail;
return device_ref;
fail:
d3d9_free_av_device_ref(ctx);
av_buffer_unref(&device_ref);
return NULL;
}
static struct AVBufferRef *d3d9_create_standalone(struct mpv_global *global,
struct mp_log *plog, struct hwcontext_create_dev_params *params)
{
d3d_load_dlls();
if (!d3d9_dll || !dxva2_dll) {
mp_err(plog, "Failed to load D3D9 library\n");
return NULL;
}
HRESULT (WINAPI *Direct3DCreate9Ex)(UINT, IDirect3D9Ex **) =
(void *)GetProcAddress(d3d9_dll, "Direct3DCreate9Ex");
if (!Direct3DCreate9Ex) {
mp_err(plog, "Failed to locate Direct3DCreate9Ex\n");
return NULL;
}
IDirect3D9Ex *d3d9ex = NULL;
HRESULT hr = Direct3DCreate9Ex(D3D_SDK_VERSION, &d3d9ex);
if (FAILED(hr)) {
mp_err(plog, "Failed to create IDirect3D9Ex object\n");
return NULL;
}
UINT adapter = D3DADAPTER_DEFAULT;
D3DDISPLAYMODEEX modeex = {0};
IDirect3D9Ex_GetAdapterDisplayModeEx(d3d9ex, adapter, &modeex, NULL);
D3DPRESENT_PARAMETERS present_params = {
.Windowed = TRUE,
.BackBufferWidth = 640,
.BackBufferHeight = 480,
.BackBufferCount = 0,
.BackBufferFormat = modeex.Format,
.SwapEffect = D3DSWAPEFFECT_DISCARD,
.Flags = D3DPRESENTFLAG_VIDEO,
};
IDirect3DDevice9Ex *exdev = NULL;
hr = IDirect3D9Ex_CreateDeviceEx(d3d9ex, adapter,
D3DDEVTYPE_HAL,
GetShellWindow(),
D3DCREATE_SOFTWARE_VERTEXPROCESSING |
D3DCREATE_MULTITHREADED |
D3DCREATE_FPU_PRESERVE,
&present_params,
NULL,
&exdev);
IDirect3D9_Release(d3d9ex);
if (FAILED(hr)) {
mp_err(plog, "Failed to create Direct3D device: %s\n",
mp_HRESULT_to_str(hr));
return NULL;
}
AVBufferRef *avref = d3d9_wrap_device_ref((IDirect3DDevice9 *)exdev);
IDirect3DDevice9Ex_Release(exdev);
if (!avref)
mp_err(plog, "Failed to allocate AVHWDeviceContext.\n");
return avref;
}
const struct hwcontext_fns hwcontext_fns_dxva2 = {
.av_hwdevice_type = AV_HWDEVICE_TYPE_DXVA2,
.create_dev = d3d9_create_standalone,
};
#endif /* HAVE_D3D9_HWACCEL */