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ffmpeg-4.2.2/libavcodec/vaapi_decode.h 3.18 KB
aac5773f   hucm   功能基本完成,接口待打磨
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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
   * 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
   */
  
  #ifndef AVCODEC_VAAPI_DECODE_H
  #define AVCODEC_VAAPI_DECODE_H
  
  #include <va/va.h>
  
  #include "libavutil/frame.h"
  #include "libavutil/hwcontext.h"
  #include "libavutil/hwcontext_vaapi.h"
  
  #include "avcodec.h"
  
  #include "version.h"
  #if FF_API_STRUCT_VAAPI_CONTEXT
  #include "vaapi.h"
  #endif
  
  static inline VASurfaceID ff_vaapi_get_surface_id(AVFrame *pic)
  {
      return (uintptr_t)pic->data[3];
  }
  
  enum {
      MAX_PARAM_BUFFERS = 16,
  };
  
  typedef struct VAAPIDecodePicture {
      VASurfaceID           output_surface;
  
      int                nb_param_buffers;
      VABufferID            param_buffers[MAX_PARAM_BUFFERS];
  
      int                nb_slices;
      VABufferID           *slice_buffers;
      int                   slices_allocated;
  } VAAPIDecodePicture;
  
  typedef struct VAAPIDecodeContext {
      VAConfigID            va_config;
      VAContextID           va_context;
  
  #if FF_API_STRUCT_VAAPI_CONTEXT
  FF_DISABLE_DEPRECATION_WARNINGS
      int                   have_old_context;
      struct vaapi_context *old_context;
      AVBufferRef          *device_ref;
  FF_ENABLE_DEPRECATION_WARNINGS
  #endif
  
      AVHWDeviceContext    *device;
      AVVAAPIDeviceContext *hwctx;
  
      AVHWFramesContext    *frames;
      AVVAAPIFramesContext *hwfc;
  
      enum AVPixelFormat    surface_format;
      int                   surface_count;
  
      VASurfaceAttrib       pixel_format_attribute;
  } VAAPIDecodeContext;
  
  
  int ff_vaapi_decode_make_param_buffer(AVCodecContext *avctx,
                                        VAAPIDecodePicture *pic,
                                        int type,
                                        const void *data,
                                        size_t size);
  
  int ff_vaapi_decode_make_slice_buffer(AVCodecContext *avctx,
                                        VAAPIDecodePicture *pic,
                                        const void *params_data,
                                        size_t params_size,
                                        const void *slice_data,
                                        size_t slice_size);
  
  int ff_vaapi_decode_issue(AVCodecContext *avctx,
                            VAAPIDecodePicture *pic);
  int ff_vaapi_decode_cancel(AVCodecContext *avctx,
                             VAAPIDecodePicture *pic);
  
  int ff_vaapi_decode_init(AVCodecContext *avctx);
  int ff_vaapi_decode_uninit(AVCodecContext *avctx);
  
  int ff_vaapi_common_frame_params(AVCodecContext *avctx,
                                   AVBufferRef *hw_frames_ctx);
  
  #endif /* AVCODEC_VAAPI_DECODE_H */