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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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8b6c3e030b
We don't support D3D11 interop for UWP because some APIs (specifically MFTEnum2) are desktop application only. However, the code for symbol loading is commonly used by both UWP and WIN32. Just link GModule unconditionally which is UWP compatible, and simply don't try to load any library/symbol dynamically when D3D11 interop is unavailable. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1216>
129 lines
3.9 KiB
C
129 lines
3.9 KiB
C
/* GStreamer
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* Copyright (C) 2021 Seungha Yang <seungha@centricular.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "gstmfplatloader.h"
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#include "gstmfconfig.h"
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#include <gmodule.h>
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/* *INDENT-OFF* */
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G_BEGIN_DECLS
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GST_DEBUG_CATEGORY_EXTERN (gst_mf_debug);
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#define GST_CAT_DEFAULT gst_mf_debug
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G_END_DECLS
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#define LOAD_SYMBOL(name,func) G_STMT_START { \
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if (!g_module_symbol (module, G_STRINGIFY (name), (gpointer *) &vtable->func)) { \
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GST_WARNING ("Failed to load '%s', %s", G_STRINGIFY (name), g_module_error()); \
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goto out; \
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} \
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} G_STMT_END;
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typedef struct _GstMFPlatVTable
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{
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gboolean loaded;
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HRESULT (__stdcall * GstMFTEnum2) (GUID guidCategory,
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UINT32 Flags,
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const MFT_REGISTER_TYPE_INFO * pInputType,
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const MFT_REGISTER_TYPE_INFO * pOutputType,
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IMFAttributes * pAttributes,
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IMFActivate *** pppMFTActivate,
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UINT32 * pnumMFTActivate);
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HRESULT (__stdcall * GstMFCreateDXGIDeviceManager) (UINT * resetToken,
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IMFDXGIDeviceManager ** ppDeviceManager);
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HRESULT (__stdcall * GstMFCreateVideoSampleAllocatorEx) (REFIID riid,
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void** ppSampleAllocator);
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} GstMFPlatVTable;
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/* *INDENT-ON* */
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static GstMFPlatVTable gst_mf_plat_vtable = { 0, };
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static gboolean
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load_library_once (void)
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{
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static gsize load_once = 0;
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if (g_once_init_enter (&load_once)) {
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#if GST_MF_HAVE_D3D11
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GModule *module;
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GstMFPlatVTable *vtable = &gst_mf_plat_vtable;
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module = g_module_open ("mfplat.dll", G_MODULE_BIND_LAZY);
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if (!module)
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goto out;
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LOAD_SYMBOL (MFTEnum2, GstMFTEnum2);
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LOAD_SYMBOL (MFCreateDXGIDeviceManager, GstMFCreateDXGIDeviceManager);
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LOAD_SYMBOL (MFCreateVideoSampleAllocatorEx,
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GstMFCreateVideoSampleAllocatorEx);
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vtable->loaded = TRUE;
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#endif
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out:
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g_once_init_leave (&load_once, 1);
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}
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return gst_mf_plat_vtable.loaded;
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}
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gboolean
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gst_mf_plat_load_library (void)
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{
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return load_library_once ();
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}
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HRESULT __stdcall
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GstMFTEnum2 (GUID guidCategory, UINT32 Flags,
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const MFT_REGISTER_TYPE_INFO * pInputType,
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const MFT_REGISTER_TYPE_INFO * pOutputType,
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IMFAttributes * pAttributes, IMFActivate *** pppMFTActivate,
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UINT32 * pnumMFTActivate)
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{
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g_assert (gst_mf_plat_vtable.GstMFTEnum2 != NULL);
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return gst_mf_plat_vtable.GstMFTEnum2 (guidCategory, Flags, pInputType,
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pOutputType, pAttributes, pppMFTActivate, pnumMFTActivate);
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}
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HRESULT __stdcall
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GstMFCreateDXGIDeviceManager (UINT * resetToken,
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IMFDXGIDeviceManager ** ppDeviceManager)
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{
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g_assert (gst_mf_plat_vtable.GstMFCreateDXGIDeviceManager != NULL);
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return gst_mf_plat_vtable.GstMFCreateDXGIDeviceManager (resetToken,
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ppDeviceManager);
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}
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HRESULT __stdcall
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GstMFCreateVideoSampleAllocatorEx (REFIID riid, void **ppSampleAllocator)
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{
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g_assert (gst_mf_plat_vtable.GstMFCreateVideoSampleAllocatorEx != NULL);
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return gst_mf_plat_vtable.GstMFCreateVideoSampleAllocatorEx (riid,
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ppSampleAllocator);
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}
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