mirror of
https://github.com/mpv-player/mpv
synced 2024-12-23 07:12:39 +00:00
77fd4dd681
This was speculatively added 2 years ago in preparation for something that apparently never happened. The D3D code was added as an "example", but this too was never used/finished. No reason to keep this.
275 lines
7.8 KiB
C
275 lines
7.8 KiB
C
/*
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* This file is part of mpv.
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*
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* mpv is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* mpv is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with mpv. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <pthread.h>
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#include "config.h"
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#include <libavcodec/avcodec.h>
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#include <libavutil/hwcontext.h>
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#include <libavutil/hwcontext_d3d11va.h>
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#if HAVE_D3D9_HWACCEL
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#include <libavutil/hwcontext_dxva2.h>
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#endif
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#include "common/common.h"
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#include "common/av_common.h"
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#include "video/fmt-conversion.h"
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#include "video/hwdec.h"
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#include "video/mp_image.h"
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#include "video/mp_image_pool.h"
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#include "osdep/windows_utils.h"
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#include "d3d.h"
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HMODULE d3d11_dll, d3d9_dll, dxva2_dll;
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PFN_D3D11_CREATE_DEVICE d3d11_D3D11CreateDevice;
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static pthread_once_t d3d_load_once = PTHREAD_ONCE_INIT;
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#if !HAVE_UWP
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static void d3d_do_load(void)
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{
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d3d11_dll = LoadLibrary(L"d3d11.dll");
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d3d9_dll = LoadLibrary(L"d3d9.dll");
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dxva2_dll = LoadLibrary(L"dxva2.dll");
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if (d3d11_dll) {
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d3d11_D3D11CreateDevice =
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(void *)GetProcAddress(d3d11_dll, "D3D11CreateDevice");
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}
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}
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#else
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static void d3d_do_load(void)
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{
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d3d11_D3D11CreateDevice = D3D11CreateDevice;
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}
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#endif
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void d3d_load_dlls(void)
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{
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pthread_once(&d3d_load_once, d3d_do_load);
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}
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// Test if Direct3D11 can be used by us. Basically, this prevents trying to use
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// D3D11 on Win7, and then failing somewhere in the process.
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bool d3d11_check_decoding(ID3D11Device *dev)
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{
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HRESULT hr;
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// We assume that NV12 is always supported, if hw decoding is supported at
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// all.
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UINT supported = 0;
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hr = ID3D11Device_CheckFormatSupport(dev, DXGI_FORMAT_NV12, &supported);
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return !FAILED(hr) && (supported & D3D11_BIND_DECODER);
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}
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static void d3d11_refine_hwframes(AVBufferRef *hw_frames_ctx)
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{
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AVHWFramesContext *fctx = (void *)hw_frames_ctx->data;
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if (fctx->format == AV_PIX_FMT_D3D11) {
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AVD3D11VAFramesContext *hwctx = fctx->hwctx;
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// According to hwcontex_d3d11va.h, yuv420p means DXGI_FORMAT_420_OPAQUE,
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// which has no shader support.
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if (fctx->sw_format != AV_PIX_FMT_YUV420P)
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hwctx->BindFlags |= D3D11_BIND_SHADER_RESOURCE;
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}
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}
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AVBufferRef *d3d11_wrap_device_ref(ID3D11Device *device)
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{
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AVBufferRef *device_ref = av_hwdevice_ctx_alloc(AV_HWDEVICE_TYPE_D3D11VA);
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if (!device_ref)
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return NULL;
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AVHWDeviceContext *ctx = (void *)device_ref->data;
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AVD3D11VADeviceContext *hwctx = ctx->hwctx;
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ID3D11Device_AddRef(device);
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hwctx->device = device;
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if (av_hwdevice_ctx_init(device_ref) < 0)
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av_buffer_unref(&device_ref);
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return device_ref;
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}
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static struct AVBufferRef *d3d11_create_standalone(struct mpv_global *global,
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struct mp_log *plog, struct hwcontext_create_dev_params *params)
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{
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ID3D11Device *device = NULL;
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HRESULT hr;
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d3d_load_dlls();
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if (!d3d11_D3D11CreateDevice) {
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mp_err(plog, "Failed to load D3D11 library\n");
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return NULL;
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}
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hr = d3d11_D3D11CreateDevice(NULL, D3D_DRIVER_TYPE_HARDWARE, NULL,
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D3D11_CREATE_DEVICE_VIDEO_SUPPORT, NULL, 0,
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D3D11_SDK_VERSION, &device, NULL, NULL);
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if (FAILED(hr)) {
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mp_err(plog, "Failed to create D3D11 Device: %s\n",
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mp_HRESULT_to_str(hr));
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return NULL;
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}
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AVBufferRef *avref = d3d11_wrap_device_ref(device);
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ID3D11Device_Release(device);
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if (!avref)
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mp_err(plog, "Failed to allocate AVHWDeviceContext.\n");
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return avref;
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}
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const struct hwcontext_fns hwcontext_fns_d3d11 = {
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.av_hwdevice_type = AV_HWDEVICE_TYPE_D3D11VA,
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.refine_hwframes = d3d11_refine_hwframes,
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.create_dev = d3d11_create_standalone,
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};
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#if HAVE_D3D9_HWACCEL
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#define DXVA2API_USE_BITFIELDS
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#include <libavutil/common.h>
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#include <libavutil/hwcontext_dxva2.h>
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static void d3d9_free_av_device_ref(AVHWDeviceContext *ctx)
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{
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AVDXVA2DeviceContext *hwctx = ctx->hwctx;
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if (hwctx->devmgr)
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IDirect3DDeviceManager9_Release(hwctx->devmgr);
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}
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AVBufferRef *d3d9_wrap_device_ref(IDirect3DDevice9 *device)
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{
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HRESULT hr;
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d3d_load_dlls();
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if (!dxva2_dll)
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return NULL;
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HRESULT (WINAPI *DXVA2CreateDirect3DDeviceManager9)(UINT *, IDirect3DDeviceManager9 **) =
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(void *)GetProcAddress(dxva2_dll, "DXVA2CreateDirect3DDeviceManager9");
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if (!DXVA2CreateDirect3DDeviceManager9)
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return NULL;
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AVBufferRef *device_ref = av_hwdevice_ctx_alloc(AV_HWDEVICE_TYPE_DXVA2);
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if (!device_ref)
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return NULL;
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AVHWDeviceContext *ctx = (void *)device_ref->data;
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AVDXVA2DeviceContext *hwctx = ctx->hwctx;
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UINT reset_token = 0;
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hr = DXVA2CreateDirect3DDeviceManager9(&reset_token, &hwctx->devmgr);
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if (FAILED(hr))
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goto fail;
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IDirect3DDeviceManager9_ResetDevice(hwctx->devmgr, device, reset_token);
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if (FAILED(hr))
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goto fail;
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ctx->free = d3d9_free_av_device_ref;
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if (av_hwdevice_ctx_init(device_ref) < 0)
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goto fail;
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return device_ref;
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fail:
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d3d9_free_av_device_ref(ctx);
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av_buffer_unref(&device_ref);
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return NULL;
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}
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static struct AVBufferRef *d3d9_create_standalone(struct mpv_global *global,
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struct mp_log *plog, struct hwcontext_create_dev_params *params)
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{
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d3d_load_dlls();
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if (!d3d9_dll || !dxva2_dll) {
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mp_err(plog, "Failed to load D3D9 library\n");
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return NULL;
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}
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HRESULT (WINAPI *Direct3DCreate9Ex)(UINT, IDirect3D9Ex **) =
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(void *)GetProcAddress(d3d9_dll, "Direct3DCreate9Ex");
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if (!Direct3DCreate9Ex) {
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mp_err(plog, "Failed to locate Direct3DCreate9Ex\n");
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return NULL;
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}
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IDirect3D9Ex *d3d9ex = NULL;
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HRESULT hr = Direct3DCreate9Ex(D3D_SDK_VERSION, &d3d9ex);
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if (FAILED(hr)) {
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mp_err(plog, "Failed to create IDirect3D9Ex object\n");
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return NULL;
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}
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UINT adapter = D3DADAPTER_DEFAULT;
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D3DDISPLAYMODEEX modeex = {0};
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IDirect3D9Ex_GetAdapterDisplayModeEx(d3d9ex, adapter, &modeex, NULL);
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D3DPRESENT_PARAMETERS present_params = {
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.Windowed = TRUE,
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.BackBufferWidth = 640,
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.BackBufferHeight = 480,
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.BackBufferCount = 0,
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.BackBufferFormat = modeex.Format,
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.SwapEffect = D3DSWAPEFFECT_DISCARD,
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.Flags = D3DPRESENTFLAG_VIDEO,
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};
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IDirect3DDevice9Ex *exdev = NULL;
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hr = IDirect3D9Ex_CreateDeviceEx(d3d9ex, adapter,
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D3DDEVTYPE_HAL,
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GetShellWindow(),
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D3DCREATE_SOFTWARE_VERTEXPROCESSING |
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D3DCREATE_MULTITHREADED |
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D3DCREATE_FPU_PRESERVE,
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&present_params,
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NULL,
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&exdev);
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IDirect3D9_Release(d3d9ex);
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if (FAILED(hr)) {
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mp_err(plog, "Failed to create Direct3D device: %s\n",
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mp_HRESULT_to_str(hr));
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return NULL;
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}
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AVBufferRef *avref = d3d9_wrap_device_ref((IDirect3DDevice9 *)exdev);
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IDirect3DDevice9Ex_Release(exdev);
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if (!avref)
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mp_err(plog, "Failed to allocate AVHWDeviceContext.\n");
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return avref;
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}
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const struct hwcontext_fns hwcontext_fns_dxva2 = {
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.av_hwdevice_type = AV_HWDEVICE_TYPE_DXVA2,
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.create_dev = d3d9_create_standalone,
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};
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#endif /* HAVE_D3D9_HWACCEL */
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