Separate DWT from snow and dsputil

This moves the DWT functions from snow.c and dsputil.c to a file of
their own.  A new struct, DWTContext, holds the function pointers
previously part of DSPContext.

Originally committed as revision 22522 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 3 insertions, 109 deletions

diff --git a/libavcodec/dsputil.c b/libavcodec/dsputil.c
index cb9d38100c..8535c6d665 100644
--- a/libavcodec/dsputil.c
+++ b/libavcodec/dsputil.c
@@ -33,7 +33,6 @@
 #include "faandct.h"
 #include "faanidct.h"
 #include "mathops.h"
-#include "snow.h"
 #include "mpegvideo.h"
 #include "config.h"
 #include "lpc.h"
@@ -329,102 +328,6 @@ static int sse16_c(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)
     return s;
 }
 
-
-#if CONFIG_SNOW_ENCODER //dwt is in snow.c
-static inline int w_c(void *v, uint8_t * pix1, uint8_t * pix2, int line_size, int w, int h, int type){
-    int s, i, j;
-    const int dec_count= w==8 ? 3 : 4;
-    int tmp[32*32];
-    int level, ori;
-    static const int scale[2][2][4][4]={
-      {
-        {
-            // 9/7 8x8 dec=3
-            {268, 239, 239, 213},
-            {  0, 224, 224, 152},
-            {  0, 135, 135, 110},
-        },{
-            // 9/7 16x16 or 32x32 dec=4
-            {344, 310, 310, 280},
-            {  0, 320, 320, 228},
-            {  0, 175, 175, 136},
-            {  0, 129, 129, 102},
-        }
-      },{
-        {
-            // 5/3 8x8 dec=3
-            {275, 245, 245, 218},
-            {  0, 230, 230, 156},
-            {  0, 138, 138, 113},
-        },{
-            // 5/3 16x16 or 32x32 dec=4
-            {352, 317, 317, 286},
-            {  0, 328, 328, 233},
-            {  0, 180, 180, 140},
-            {  0, 132, 132, 105},
-        }
-      }
-    };
-
-    for (i = 0; i < h; i++) {
-        for (j = 0; j < w; j+=4) {
-            tmp[32*i+j+0] = (pix1[j+0] - pix2[j+0])<<4;
-            tmp[32*i+j+1] = (pix1[j+1] - pix2[j+1])<<4;
-            tmp[32*i+j+2] = (pix1[j+2] - pix2[j+2])<<4;
-            tmp[32*i+j+3] = (pix1[j+3] - pix2[j+3])<<4;
-        }
-        pix1 += line_size;
-        pix2 += line_size;
-    }
-
-    ff_spatial_dwt(tmp, w, h, 32, type, dec_count);
-
-    s=0;
-    assert(w==h);
-    for(level=0; level<dec_count; level++){
-        for(ori= level ? 1 : 0; ori<4; ori++){
-            int size= w>>(dec_count-level);
-            int sx= (ori&1) ? size : 0;
-            int stride= 32<<(dec_count-level);
-            int sy= (ori&2) ? stride>>1 : 0;
-
-            for(i=0; i<size; i++){
-                for(j=0; j<size; j++){
-                    int v= tmp[sx + sy + i*stride + j] * scale[type][dec_count-3][level][ori];
-                    s += FFABS(v);
-                }
-            }
-        }
-    }
-    assert(s>=0);
-    return s>>9;
-}
-
-static int w53_8_c(void *v, uint8_t * pix1, uint8_t * pix2, int line_size, int h){
-    return w_c(v, pix1, pix2, line_size,  8, h, 1);
-}
-
-static int w97_8_c(void *v, uint8_t * pix1, uint8_t * pix2, int line_size, int h){
-    return w_c(v, pix1, pix2, line_size,  8, h, 0);
-}
-
-static int w53_16_c(void *v, uint8_t * pix1, uint8_t * pix2, int line_size, int h){
-    return w_c(v, pix1, pix2, line_size, 16, h, 1);
-}
-
-static int w97_16_c(void *v, uint8_t * pix1, uint8_t * pix2, int line_size, int h){
-    return w_c(v, pix1, pix2, line_size, 16, h, 0);
-}
-
-int w53_32_c(void *v, uint8_t * pix1, uint8_t * pix2, int line_size, int h){
-    return w_c(v, pix1, pix2, line_size, 32, h, 1);
-}
-
-int w97_32_c(void *v, uint8_t * pix1, uint8_t * pix2, int line_size, int h){
-    return w_c(v, pix1, pix2, line_size, 32, h, 0);
-}
-#endif
-
 /* draw the edges of width 'w' of an image of size width, height */
 //FIXME check that this is ok for mpeg4 interlaced
 static void draw_edges_c(uint8_t *buf, int wrap, int width, int height, int w)
@@ -3531,7 +3434,7 @@ void ff_set_cmp(DSPContext* c, me_cmp_func *cmp, int type){
         case FF_CMP_NSSE:
             cmp[i]= c->nsse[i];
             break;
-#if CONFIG_SNOW_ENCODER
+#if CONFIG_DWT
         case FF_CMP_W53:
             cmp[i]= c->w53[i];
             break;
@@ -4816,11 +4719,8 @@ av_cold void dsputil_init(DSPContext* c, AVCodecContext *avctx)
     c->vsse[5]= vsse_intra8_c;
     c->nsse[0]= nsse16_c;
     c->nsse[1]= nsse8_c;
-#if CONFIG_SNOW_ENCODER
-    c->w53[0]= w53_16_c;
-    c->w53[1]= w53_8_c;
-    c->w97[0]= w97_16_c;
-    c->w97[1]= w97_8_c;
+#if CONFIG_DWT
+    ff_dsputil_init_dwt(c);
 #endif
 
     c->ssd_int8_vs_int16 = ssd_int8_vs_int16_c;
@@ -4865,12 +4765,6 @@ av_cold void dsputil_init(DSPContext* c, AVCodecContext *avctx)
     c->try_8x8basis= try_8x8basis_c;
     c->add_8x8basis= add_8x8basis_c;
 
-#if CONFIG_SNOW_DECODER
-    c->vertical_compose97i = ff_snow_vertical_compose97i;
-    c->horizontal_compose97i = ff_snow_horizontal_compose97i;
-    c->inner_add_yblock = ff_snow_inner_add_yblock;
-#endif
-
 #if CONFIG_VORBIS_DECODER
     c->vorbis_inverse_coupling = vorbis_inverse_coupling;
 #endif