/* * Direct3D11 HW acceleration * * copyright (c) 2015 Steve Lhomme * * This file is part of FFmpeg. * * FFmpeg 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. * * FFmpeg 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 FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include <stddef.h> #include "config.h" #if CONFIG_D3D11VA#include "libavutil/error.h"#include "libavutil/mem.h" #include "d3d11va.h" AVD3D11VAContext *av_d3d11va_alloc_context(void){    AVD3D11VAContext* res = av_mallocz(sizeof(AVD3D11VAContext));    if (!res)        return NULL;    res->context_mutex = INVALID_HANDLE_VALUE;    return res;}#elsestruct AVD3D11VAContext *av_d3d11va_alloc_context(void); struct AVD3D11VAContext *av_d3d11va_alloc_context(void){    return NULL;}#endif /* CONFIG_D3D11VA */