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ffmpeg-4.2.2/libavcodec/lossless_videodsp.h 1.82 KB
aac5773f   hucm   功能基本完成,接口待打磨
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  /*
   * Lossless video DSP utils
   *
   * 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_LOSSLESS_VIDEODSP_H
  #define AVCODEC_LOSSLESS_VIDEODSP_H
  
  #include <stdint.h>
  #include <stddef.h>
  
  #include "avcodec.h"
  #include "libavutil/cpu.h"
  
  typedef struct LLVidDSPContext {
      void (*add_bytes)(uint8_t *dst /* align 32 */, uint8_t *src /* align 32 */,
                        ptrdiff_t w);
      void (*add_median_pred)(uint8_t *dst, const uint8_t *top,
                              const uint8_t *diff, ptrdiff_t w,
                              int *left, int *left_top);
      int (*add_left_pred)(uint8_t *dst, const uint8_t *src,
                           ptrdiff_t w, int left);
  
      int  (*add_left_pred_int16)(uint16_t *dst, const uint16_t *src,
                                  unsigned mask, ptrdiff_t w, unsigned left);
      void (*add_gradient_pred)(uint8_t *src /* align 32 */, const ptrdiff_t stride, const ptrdiff_t width);
  } LLVidDSPContext;
  
  void ff_llviddsp_init(LLVidDSPContext *llviddsp);
  void ff_llviddsp_init_x86(LLVidDSPContext *llviddsp);
  void ff_llviddsp_init_ppc(LLVidDSPContext *llviddsp);
  
  #endif //AVCODEC_LOSSLESS_VIDEODSP_H