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  1. /*
  2.  * Copyright (C) 2010 David Conrad
  3.  * Copyright (C) 2010 Ronald S. Bultje
  4.  *
  5.  * This file is part of FFmpeg.
  6.  *
  7.  * FFmpeg is free software; you can redistribute it and/or
  8.  * modify it under the terms of the GNU Lesser General Public
  9.  * License as published by the Free Software Foundation; either
  10.  * version 2.1 of the License, or (at your option) any later version.
  11.  *
  12.  * FFmpeg is distributed in the hope that it will be useful,
  13.  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15.  * Lesser General Public License for more details.
  16.  *
  17.  * You should have received a copy of the GNU Lesser General Public
  18.  * License along with FFmpeg; if not, write to the Free Software
  19.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  20.  */
  21.  
  22. /**
  23.  * @file
  24.  * VP8 compatible video decoder
  25.  */
  26.  
  27. #ifndef AVCODEC_VP8DSP_H
  28. #define AVCODEC_VP8DSP_H
  29.  
  30. #include <stddef.h>
  31. #include <stdint.h>
  32.  
  33. typedef void (*vp8_mc_func)(uint8_t *dst/*align 8*/, ptrdiff_t dstStride,
  34.                             uint8_t *src/*align 1*/, ptrdiff_t srcStride,
  35.                             int h, int x, int y);
  36.  
  37. typedef struct VP8DSPContext {
  38.     void (*vp8_luma_dc_wht)(int16_t block[4][4][16], int16_t dc[16]);
  39.     void (*vp8_luma_dc_wht_dc)(int16_t block[4][4][16], int16_t dc[16]);
  40.     void (*vp8_idct_add)(uint8_t *dst, int16_t block[16], ptrdiff_t stride);
  41.     void (*vp8_idct_dc_add)(uint8_t *dst, int16_t block[16], ptrdiff_t stride);
  42.     void (*vp8_idct_dc_add4y)(uint8_t *dst, int16_t block[4][16],
  43.                               ptrdiff_t stride);
  44.     void (*vp8_idct_dc_add4uv)(uint8_t *dst, int16_t block[4][16],
  45.                                ptrdiff_t stride);
  46.  
  47.     // loop filter applied to edges between macroblocks
  48.     void (*vp8_v_loop_filter16y)(uint8_t *dst, ptrdiff_t stride,
  49.                                  int flim_E, int flim_I, int hev_thresh);
  50.     void (*vp8_h_loop_filter16y)(uint8_t *dst, ptrdiff_t stride,
  51.                                  int flim_E, int flim_I, int hev_thresh);
  52.     void (*vp8_v_loop_filter8uv)(uint8_t *dstU, uint8_t *dstV, ptrdiff_t stride,
  53.                                  int flim_E, int flim_I, int hev_thresh);
  54.     void (*vp8_h_loop_filter8uv)(uint8_t *dstU, uint8_t *dstV, ptrdiff_t stride,
  55.                                  int flim_E, int flim_I, int hev_thresh);
  56.  
  57.     // loop filter applied to inner macroblock edges
  58.     void (*vp8_v_loop_filter16y_inner)(uint8_t *dst, ptrdiff_t stride,
  59.                                        int flim_E, int flim_I, int hev_thresh);
  60.     void (*vp8_h_loop_filter16y_inner)(uint8_t *dst, ptrdiff_t stride,
  61.                                        int flim_E, int flim_I, int hev_thresh);
  62.     void (*vp8_v_loop_filter8uv_inner)(uint8_t *dstU, uint8_t *dstV,
  63.                                        ptrdiff_t stride,
  64.                                        int flim_E, int flim_I, int hev_thresh);
  65.     void (*vp8_h_loop_filter8uv_inner)(uint8_t *dstU, uint8_t *dstV,
  66.                                        ptrdiff_t stride,
  67.                                        int flim_E, int flim_I, int hev_thresh);
  68.  
  69.     void (*vp8_v_loop_filter_simple)(uint8_t *dst, ptrdiff_t stride, int flim);
  70.     void (*vp8_h_loop_filter_simple)(uint8_t *dst, ptrdiff_t stride, int flim);
  71.  
  72.     /**
  73.      * first dimension: width>>3, height is assumed equal to width
  74.      * second dimension: 0 if no vertical interpolation is needed;
  75.      *                   1 4-tap vertical interpolation filter (my & 1)
  76.      *                   2 6-tap vertical interpolation filter (!(my & 1))
  77.      * third dimension: same as second dimension, for horizontal interpolation
  78.      * so something like put_vp8_epel_pixels_tab[width>>3][2*!!my-(my&1)][2*!!mx-(mx&1)](..., mx, my)
  79.      */
  80.     vp8_mc_func put_vp8_epel_pixels_tab[3][3][3];
  81.     vp8_mc_func put_vp8_bilinear_pixels_tab[3][3][3];
  82. } VP8DSPContext;
  83.  
  84. void ff_put_vp8_pixels16_c(uint8_t *dst, uint8_t *src, ptrdiff_t stride,
  85.                            int h, int x, int y);
  86. void ff_put_vp8_pixels8_c(uint8_t *dst, uint8_t *src, ptrdiff_t stride,
  87.                           int h, int x, int y);
  88. void ff_put_vp8_pixels4_c(uint8_t *dst, uint8_t *src, ptrdiff_t stride,
  89.                           int h, int x, int y);
  90.  
  91. void ff_vp8dsp_init(VP8DSPContext *c);
  92. void ff_vp8dsp_init_x86(VP8DSPContext *c);
  93. void ff_vp8dsp_init_arm(VP8DSPContext *c);
  94. void ff_vp8dsp_init_ppc(VP8DSPContext *c);
  95.  
  96. #endif /* AVCODEC_VP8DSP_H */
  97.