1 /* 2 * This file is part of FFmpeg. 3 * 4 * FFmpeg is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU Lesser General Public 6 * License as published by the Free Software Foundation; either 7 * version 2.1 of the License, or (at your option) any later version. 8 * 9 * FFmpeg is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 * Lesser General Public License for more details. 13 * 14 * You should have received a copy of the GNU Lesser General Public 15 * License along with FFmpeg; if not, write to the Free Software 16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 17 */ 18 19 20 #ifndef AVUTIL_HWCONTEXT_DXVA2_H 21 #define AVUTIL_HWCONTEXT_DXVA2_H 22 23 /** 24 * @file 25 * An API-specific header for AV_HWDEVICE_TYPE_DXVA2. 26 * 27 * Only fixed-size pools are supported. 28 * 29 * For user-allocated pools, AVHWFramesContext.pool must return AVBufferRefs 30 * with the data pointer set to a pointer to IDirect3DSurface9. 31 */ 32 33 #include <d3d9.h> 34 #include <dxva2api.h> 35 36 /** 37 * This struct is allocated as AVHWDeviceContext.hwctx 38 */ 39 typedef struct AVDXVA2DeviceContext { 40 IDirect3DDeviceManager9 *devmgr; 41 } AVDXVA2DeviceContext; 42 43 /** 44 * This struct is allocated as AVHWFramesContext.hwctx 45 */ 46 typedef struct AVDXVA2FramesContext { 47 /** 48 * The surface type (e.g. DXVA2_VideoProcessorRenderTarget or 49 * DXVA2_VideoDecoderRenderTarget). Must be set by the caller. 50 */ 51 DWORD surface_type; 52 53 /** 54 * The surface pool. When an external pool is not provided by the caller, 55 * this will be managed (allocated and filled on init, freed on uninit) by 56 * libavutil. 57 */ 58 IDirect3DSurface9 **surfaces; 59 int nb_surfaces; 60 61 /** 62 * Certain drivers require the decoder to be destroyed before the surfaces. 63 * To allow internally managed pools to work properly in such cases, this 64 * field is provided. 65 * 66 * If it is non-NULL, libavutil will call IDirectXVideoDecoder_Release() on 67 * it just before the internal surface pool is freed. 68 * 69 * This is for convenience only. Some code uses other methods to manage the 70 * decoder reference. 71 */ 72 IDirectXVideoDecoder *decoder_to_release; 73 } AVDXVA2FramesContext; 74 75 #endif /* AVUTIL_HWCONTEXT_DXVA2_H */ 76