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* 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
* 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
* @file
* An API-specific header for AV_HWDEVICE_TYPE_DXVA2.
* Only fixed-size pools are supported.
* For user-allocated pools, AVHWFramesContext.pool must return AVBufferRefs
* with the data pointer set to a pointer to IDirect3DSurface9.
#include <d3d9.h>
#include <dxva2api.h>
* This struct is allocated as AVHWDeviceContext.hwctx
typedef struct AVDXVA2DeviceContext {
IDirect3DDeviceManager9 *devmgr;
} AVDXVA2DeviceContext;
* This struct is allocated as AVHWFramesContext.hwctx
typedef struct AVDXVA2FramesContext {
* The surface type (e.g. DXVA2_VideoProcessorRenderTarget or
* DXVA2_VideoDecoderRenderTarget). Must be set by the caller.
DWORD surface_type;
* The surface pool. When an external pool is not provided by the caller,
* this will be managed (allocated and filled on init, freed on uninit) by
* libavutil.
IDirect3DSurface9 **surfaces;
int nb_surfaces;
* Certain drivers require the decoder to be destroyed before the surfaces.
* To allow internally managed pools to work properly in such cases, this
* field is provided.
* If it is non-NULL, libavutil will call IDirectXVideoDecoder_Release() on
* it just before the internal surface pool is freed.
* This is for convenience only. Some code uses other methods to manage the
* decoder reference.
IDirectXVideoDecoder *decoder_to_release;
} AVDXVA2FramesContext;