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ffmpeg-4.2.2/libavcodec/mpegvideoencdsp.h 2.14 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_MPEGVIDEOENCDSP_H
  #define AVCODEC_MPEGVIDEOENCDSP_H
  
  #include <stdint.h>
  
  #include "avcodec.h"
  
  #define BASIS_SHIFT 16
  #define RECON_SHIFT 6
  
  #define EDGE_TOP    1
  #define EDGE_BOTTOM 2
  
  typedef struct MpegvideoEncDSPContext {
      int (*try_8x8basis)(int16_t rem[64], int16_t weight[64],
                          int16_t basis[64], int scale);
      void (*add_8x8basis)(int16_t rem[64], int16_t basis[64], int scale);
  
      int (*pix_sum)(uint8_t *pix, int line_size);
      int (*pix_norm1)(uint8_t *pix, int line_size);
  
      void (*shrink[4])(uint8_t *dst, int dst_wrap, const uint8_t *src,
                        int src_wrap, int width, int height);
  
      void (*draw_edges)(uint8_t *buf, int wrap, int width, int height,
                         int w, int h, int sides);
  } MpegvideoEncDSPContext;
  
  void ff_mpegvideoencdsp_init(MpegvideoEncDSPContext *c,
                               AVCodecContext *avctx);
  void ff_mpegvideoencdsp_init_arm(MpegvideoEncDSPContext *c,
                                   AVCodecContext *avctx);
  void ff_mpegvideoencdsp_init_ppc(MpegvideoEncDSPContext *c,
                                   AVCodecContext *avctx);
  void ff_mpegvideoencdsp_init_x86(MpegvideoEncDSPContext *c,
                                   AVCodecContext *avctx);
  void ff_mpegvideoencdsp_init_mips(MpegvideoEncDSPContext *c,
                                    AVCodecContext *avctx);
  
  #endif /* AVCODEC_MPEGVIDEOENCDSP_H */