common/pixel.h

   1 /*****************************************************************************
   2  * pixel.h: h264 encoder library
   3  *****************************************************************************
   4  * Copyright (C) 2004-2008 Loren Merritt <lorenm@u.washington.edu>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02111, USA.
  19  *****************************************************************************/
  20
  21 #ifndef X264_PIXEL_H
  22 #define X264_PIXEL_H
  23
  24 // SSD assumes all args aligned
  25 // other cmp functions assume first arg aligned
  26 typedef int  (*x264_pixel_cmp_t) ( uint8_t *, int, uint8_t *, int );
  27 typedef void (*x264_pixel_cmp_x3_t) ( uint8_t *, uint8_t *, uint8_t *, uint8_t *, int, int[3] );
  28 typedef void (*x264_pixel_cmp_x4_t) ( uint8_t *, uint8_t *, uint8_t *, uint8_t *, uint8_t *, int, int[4] );
  29
  30 enum
  31 {
  32     PIXEL_16x16 = 0,
  33     PIXEL_16x8  = 1,
  34     PIXEL_8x16  = 2,
  35     PIXEL_8x8   = 3,
  36     PIXEL_8x4   = 4,
  37     PIXEL_4x8   = 5,
  38     PIXEL_4x4   = 6,
  39     PIXEL_4x2   = 7,
  40     PIXEL_2x4   = 8,
  41     PIXEL_2x2   = 9,
  42 };
  43
  44 static const struct {
  45     int w;
  46     int h;
  47 } x264_pixel_size[7] = {
  48     { 16, 16 },
  49     { 16,  8 }, {  8, 16 },
  50     {  8,  8 },
  51     {  8,  4 }, {  4,  8 },
  52     {  4,  4 }
  53 };
  54
  55 static const uint8_t x264_size2pixel[5][5] = {
  56     { 0, },
  57     { 0, PIXEL_4x4, PIXEL_8x4, 0, 0 },
  58     { 0, PIXEL_4x8, PIXEL_8x8, 0, PIXEL_16x8 },
  59     { 0, },
  60     { 0, 0,        PIXEL_8x16, 0, PIXEL_16x16 }
  61 };
  62
  63 typedef struct
  64 {
  65     x264_pixel_cmp_t  sad[7];
  66     x264_pixel_cmp_t  ssd[7];
  67     x264_pixel_cmp_t satd[7];
  68     x264_pixel_cmp_t ssim[7];
  69     x264_pixel_cmp_t sa8d[4];
  70     x264_pixel_cmp_t mbcmp[7]; /* either satd or sad for subpel refine and mode decision */
  71     x264_pixel_cmp_t mbcmp_unaligned[7]; /* unaligned mbcmp for subpel */
  72     x264_pixel_cmp_t fpelcmp[7]; /* either satd or sad for fullpel motion search */
  73     x264_pixel_cmp_x3_t fpelcmp_x3[7];
  74     x264_pixel_cmp_x4_t fpelcmp_x4[7];
  75     x264_pixel_cmp_t sad_aligned[7]; /* Aligned SAD for mbcmp */
  76
  77     int (*var[4])( uint8_t *pix, int stride, uint32_t *sad );
  78     uint64_t (*hadamard_ac[4])( uint8_t *pix, int stride );
  79
  80     void (*ssim_4x4x2_core)( const uint8_t *pix1, int stride1,
  81                              const uint8_t *pix2, int stride2, int sums[2][4] );
  82     float (*ssim_end4)( int sum0[5][4], int sum1[5][4], int width );
  83
  84     /* multiple parallel calls to cmp. */
  85     x264_pixel_cmp_x3_t sad_x3[7];
  86     x264_pixel_cmp_x4_t sad_x4[7];
  87     x264_pixel_cmp_x3_t satd_x3[7];
  88     x264_pixel_cmp_x4_t satd_x4[7];
  89
  90     /* abs-diff-sum for successive elimination.
  91      * may round width up to a multiple of 16. */
  92     int (*ads[7])( int enc_dc[4], uint16_t *sums, int delta,
  93                    uint16_t *cost_mvx, int16_t *mvs, int width, int thresh );
  94
  95     /* calculate satd or sad of V, H, and DC modes.
  96      * may be NULL, in which case just use pred+satd instead. */
  97     void (*intra_mbcmp_x3_16x16)( uint8_t *fenc, uint8_t *fdec  , int res[3] );
  98     void (*intra_satd_x3_16x16) ( uint8_t *fenc, uint8_t *fdec  , int res[3] );
  99     void (*intra_sad_x3_16x16)  ( uint8_t *fenc, uint8_t *fdec  , int res[3] );
 100     void (*intra_satd_x3_8x8c)  ( uint8_t *fenc, uint8_t *fdec  , int res[3] );
 101     void (*intra_satd_x3_4x4)   ( uint8_t *fenc, uint8_t *fdec  , int res[3] );
 102     void (*intra_sa8d_x3_8x8)   ( uint8_t *fenc, uint8_t edge[33], int res[3] );
 103 } x264_pixel_function_t;
 104
 105 void x264_pixel_init( int cpu, x264_pixel_function_t *pixf );
 106 int64_t x264_pixel_ssd_wxh( x264_pixel_function_t *pf, uint8_t *pix1, int i_pix1, uint8_t *pix2, int i_pix2, int i_width, int i_height );
 107 float x264_pixel_ssim_wxh( x264_pixel_function_t *pf, uint8_t *pix1, int i_pix1, uint8_t *pix2, int i_pix2, int i_width, int i_height );
 108
 109 #endif