LCOV - code coverage report
Current view: top level - src/libavcodec - binkdsp.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 59 59 100.0 %
Date: 2017-05-26 21:11:57 Functions: 7 7 100.0 %

          Line data    Source code
       1             : /*
       2             :  * Bink DSP routines
       3             :  * Copyright (c) 2009 Konstantin Shishkov
       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             :  * Bink DSP routines
      25             :  */
      26             : 
      27             : #include "config.h"
      28             : #include "libavutil/attributes.h"
      29             : #include "binkdsp.h"
      30             : 
      31             : #define A1  2896 /* (1/sqrt(2))<<12 */
      32             : #define A2  2217
      33             : #define A3  3784
      34             : #define A4 -5352
      35             : 
      36             : #define IDCT_TRANSFORM(dest,s0,s1,s2,s3,s4,s5,s6,s7,d0,d1,d2,d3,d4,d5,d6,d7,munge,src) {\
      37             :     const int a0 = (src)[s0] + (src)[s4]; \
      38             :     const int a1 = (src)[s0] - (src)[s4]; \
      39             :     const int a2 = (src)[s2] + (src)[s6]; \
      40             :     const int a3 = (A1*((src)[s2] - (src)[s6])) >> 11; \
      41             :     const int a4 = (src)[s5] + (src)[s3]; \
      42             :     const int a5 = (src)[s5] - (src)[s3]; \
      43             :     const int a6 = (src)[s1] + (src)[s7]; \
      44             :     const int a7 = (src)[s1] - (src)[s7]; \
      45             :     const int b0 = a4 + a6; \
      46             :     const int b1 = (A3*(a5 + a7)) >> 11; \
      47             :     const int b2 = ((A4*a5) >> 11) - b0 + b1; \
      48             :     const int b3 = (A1*(a6 - a4) >> 11) - b2; \
      49             :     const int b4 = ((A2*a7) >> 11) + b3 - b1; \
      50             :     (dest)[d0] = munge(a0+a2   +b0); \
      51             :     (dest)[d1] = munge(a1+a3-a2+b2); \
      52             :     (dest)[d2] = munge(a1-a3+a2+b3); \
      53             :     (dest)[d3] = munge(a0-a2   -b4); \
      54             :     (dest)[d4] = munge(a0-a2   +b4); \
      55             :     (dest)[d5] = munge(a1-a3+a2-b3); \
      56             :     (dest)[d6] = munge(a1+a3-a2-b2); \
      57             :     (dest)[d7] = munge(a0+a2   -b0); \
      58             : }
      59             : /* end IDCT_TRANSFORM macro */
      60             : 
      61             : #define MUNGE_NONE(x) (x)
      62             : #define IDCT_COL(dest,src) IDCT_TRANSFORM(dest,0,8,16,24,32,40,48,56,0,8,16,24,32,40,48,56,MUNGE_NONE,src)
      63             : 
      64             : #define MUNGE_ROW(x) (((x) + 0x7F)>>8)
      65             : #define IDCT_ROW(dest,src) IDCT_TRANSFORM(dest,0,1,2,3,4,5,6,7,0,1,2,3,4,5,6,7,MUNGE_ROW,src)
      66             : 
      67      364064 : static inline void bink_idct_col(int *dest, const int32_t *src)
      68             : {
      69      364064 :     if ((src[8]|src[16]|src[24]|src[32]|src[40]|src[48]|src[56])==0) {
      70      248207 :         dest[0]  =
      71      496414 :         dest[8]  =
      72      496414 :         dest[16] =
      73      496414 :         dest[24] =
      74      496414 :         dest[32] =
      75      496414 :         dest[40] =
      76      496414 :         dest[48] =
      77      248207 :         dest[56] = src[0];
      78             :     } else {
      79      115857 :         IDCT_COL(dest, src);
      80             :     }
      81      364064 : }
      82             : 
      83        9173 : static void bink_idct_c(int32_t *block)
      84             : {
      85             :     int i;
      86             :     int temp[64];
      87             : 
      88       82557 :     for (i = 0; i < 8; i++)
      89       73384 :         bink_idct_col(&temp[i], &block[i]);
      90       82557 :     for (i = 0; i < 8; i++) {
      91       73384 :         IDCT_ROW( (&block[8*i]), (&temp[8*i]) );
      92             :     }
      93        9173 : }
      94             : 
      95        9173 : static void bink_idct_add_c(uint8_t *dest, int linesize, int32_t *block)
      96             : {
      97             :     int i, j;
      98             : 
      99        9173 :     bink_idct_c(block);
     100       82557 :     for (i = 0; i < 8; i++, dest += linesize, block += 8)
     101      660456 :         for (j = 0; j < 8; j++)
     102      587072 :              dest[j] += block[j];
     103        9173 : }
     104             : 
     105       36335 : static void bink_idct_put_c(uint8_t *dest, int linesize, int32_t *block)
     106             : {
     107             :     int i;
     108             :     int temp[64];
     109      327015 :     for (i = 0; i < 8; i++)
     110      290680 :         bink_idct_col(&temp[i], &block[i]);
     111      327015 :     for (i = 0; i < 8; i++) {
     112      290680 :         IDCT_ROW( (&dest[i*linesize]), (&temp[8*i]) );
     113             :     }
     114       36335 : }
     115             : 
     116       21107 : static void scale_block_c(const uint8_t src[64]/*align 8*/, uint8_t *dst/*align 8*/, int linesize)
     117             : {
     118             :     int i, j;
     119       21107 :     uint16_t *dst1 = (uint16_t *) dst;
     120       21107 :     uint16_t *dst2 = (uint16_t *)(dst + linesize);
     121             : 
     122      189963 :     for (j = 0; j < 8; j++) {
     123     1519704 :         for (i = 0; i < 8; i++) {
     124     1350848 :             dst1[i] = dst2[i] = src[i] * 0x0101;
     125             :         }
     126      168856 :         src  += 8;
     127      168856 :         dst1 += linesize;
     128      168856 :         dst2 += linesize;
     129             :     }
     130       21107 : }
     131             : 
     132       17330 : static void add_pixels8_c(uint8_t *av_restrict pixels, int16_t *block,
     133             :                           int line_size)
     134             : {
     135             :     int i;
     136             : 
     137      155970 :     for (i = 0; i < 8; i++) {
     138      138640 :         pixels[0] += block[0];
     139      138640 :         pixels[1] += block[1];
     140      138640 :         pixels[2] += block[2];
     141      138640 :         pixels[3] += block[3];
     142      138640 :         pixels[4] += block[4];
     143      138640 :         pixels[5] += block[5];
     144      138640 :         pixels[6] += block[6];
     145      138640 :         pixels[7] += block[7];
     146      138640 :         pixels    += line_size;
     147      138640 :         block     += 8;
     148             :     }
     149       17330 : }
     150             : 
     151           9 : av_cold void ff_binkdsp_init(BinkDSPContext *c)
     152             : {
     153           9 :     c->idct_add    = bink_idct_add_c;
     154           9 :     c->idct_put    = bink_idct_put_c;
     155           9 :     c->scale_block = scale_block_c;
     156           9 :     c->add_pixels8 = add_pixels8_c;
     157           9 : }

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