Remove h264_lowres_idct_put/add functions

Use of these has been broken ever since the h264 idct was changed
to always use transposed inputs.  Furthermore, they were only
ever used if some *other* non-default idct was requested.
Signed-off-by: Mans Rullgard <mans@mansr.com>

libavcodec/dsputil.c

@@ -2863,29 +2863,8 @@ av_cold void dsputil_init(DSPContext* c, AVCodecContext *avctx)
 #endif //CONFIG_ENCODERS
 
     if(avctx->lowres==1){
-        if(avctx->idct_algo==FF_IDCT_INT || avctx->idct_algo==FF_IDCT_AUTO || !CONFIG_H264_DECODER){
-            c->idct_put= ff_jref_idct4_put;
-            c->idct_add= ff_jref_idct4_add;
-        }else{
-            if (avctx->codec_id != CODEC_ID_H264) {
-                c->idct_put= ff_h264_lowres_idct_put_8_c;
-                c->idct_add= ff_h264_lowres_idct_add_8_c;
-            } else {
-                switch (avctx->bits_per_raw_sample) {
-                    case 9:
-                        c->idct_put= ff_h264_lowres_idct_put_9_c;
-                        c->idct_add= ff_h264_lowres_idct_add_9_c;
-                        break;
-                    case 10:
-                        c->idct_put= ff_h264_lowres_idct_put_10_c;
-                        c->idct_add= ff_h264_lowres_idct_add_10_c;
-                        break;
-                    default:
-                        c->idct_put= ff_h264_lowres_idct_put_8_c;
-                        c->idct_add= ff_h264_lowres_idct_add_8_c;
-                }
-            }
-        }
+        c->idct_put= ff_jref_idct4_put;
+        c->idct_add= ff_jref_idct4_add;
         c->idct    = j_rev_dct4;
         c->idct_permutation_type= FF_NO_IDCT_PERM;
     }else if(avctx->lowres==2){

libavcodec/dsputil.h

@@ -58,8 +58,6 @@ void ff_h264_idct8_add_ ## depth ## _c(uint8_t *dst, DCTELEM *block, int stride)
 void ff_h264_idct_add_ ## depth ## _c(uint8_t *dst, DCTELEM *block, int stride);\
 void ff_h264_idct8_dc_add_ ## depth ## _c(uint8_t *dst, DCTELEM *block, int stride);\
 void ff_h264_idct_dc_add_ ## depth ## _c(uint8_t *dst, DCTELEM *block, int stride);\
-void ff_h264_lowres_idct_add_ ## depth ## _c(uint8_t *dst, int stride, DCTELEM *block);\
-void ff_h264_lowres_idct_put_ ## depth ## _c(uint8_t *dst, int stride, DCTELEM *block);\
 void ff_h264_idct_add16_ ## depth ## _c(uint8_t *dst, const int *blockoffset, DCTELEM *block, int stride, const uint8_t nnzc[6*8]);\
 void ff_h264_idct_add16intra_ ## depth ## _c(uint8_t *dst, const int *blockoffset, DCTELEM *block, int stride, const uint8_t nnzc[6*8]);\
 void ff_h264_idct8_add4_ ## depth ## _c(uint8_t *dst, const int *blockoffset, DCTELEM *block, int stride, const uint8_t nnzc[6*8]);\

libavcodec/h264idct_template.c

@@ -46,52 +46,41 @@ static const uint8_t scan8[16*3]={
 };
 #endif
 
-static av_always_inline void FUNCC(idct_internal)(uint8_t *_dst, DCTELEM *_block, int stride, int block_stride, int shift, int add){
+void FUNCC(ff_h264_idct_add)(uint8_t *_dst, DCTELEM *_block, int stride)
+{
     int i;
     INIT_CLIP
     pixel *dst = (pixel*)_dst;
     dctcoef *block = (dctcoef*)_block;
     stride /= sizeof(pixel);
 
-    block[0] += 1<<(shift-1);
+    block[0] += 1 << 5;
 
     for(i=0; i<4; i++){
-        const int z0=  block[i + block_stride*0]     +  block[i + block_stride*2];
-        const int z1=  block[i + block_stride*0]     -  block[i + block_stride*2];
-        const int z2= (block[i + block_stride*1]>>1) -  block[i + block_stride*3];
-        const int z3=  block[i + block_stride*1]     + (block[i + block_stride*3]>>1);
-
-        block[i + block_stride*0]= z0 + z3;
-        block[i + block_stride*1]= z1 + z2;
-        block[i + block_stride*2]= z1 - z2;
-        block[i + block_stride*3]= z0 - z3;
+        const int z0=  block[i + 4*0]     +  block[i + 4*2];
+        const int z1=  block[i + 4*0]     -  block[i + 4*2];
+        const int z2= (block[i + 4*1]>>1) -  block[i + 4*3];
+        const int z3=  block[i + 4*1]     + (block[i + 4*3]>>1);
+
+        block[i + 4*0]= z0 + z3;
+        block[i + 4*1]= z1 + z2;
+        block[i + 4*2]= z1 - z2;
+        block[i + 4*3]= z0 - z3;
     }
 
     for(i=0; i<4; i++){
-        const int z0=  block[0 + block_stride*i]     +  block[2 + block_stride*i];
-        const int z1=  block[0 + block_stride*i]     -  block[2 + block_stride*i];
-        const int z2= (block[1 + block_stride*i]>>1) -  block[3 + block_stride*i];
-        const int z3=  block[1 + block_stride*i]     + (block[3 + block_stride*i]>>1);
-
-        dst[i + 0*stride]= CLIP(add*dst[i + 0*stride] + ((z0 + z3) >> shift));
-        dst[i + 1*stride]= CLIP(add*dst[i + 1*stride] + ((z1 + z2) >> shift));
-        dst[i + 2*stride]= CLIP(add*dst[i + 2*stride] + ((z1 - z2) >> shift));
-        dst[i + 3*stride]= CLIP(add*dst[i + 3*stride] + ((z0 - z3) >> shift));
+        const int z0=  block[0 + 4*i]     +  block[2 + 4*i];
+        const int z1=  block[0 + 4*i]     -  block[2 + 4*i];
+        const int z2= (block[1 + 4*i]>>1) -  block[3 + 4*i];
+        const int z3=  block[1 + 4*i]     + (block[3 + 4*i]>>1);
+
+        dst[i + 0*stride]= CLIP(dst[i + 0*stride] + ((z0 + z3) >> 6));
+        dst[i + 1*stride]= CLIP(dst[i + 1*stride] + ((z1 + z2) >> 6));
+        dst[i + 2*stride]= CLIP(dst[i + 2*stride] + ((z1 - z2) >> 6));
+        dst[i + 3*stride]= CLIP(dst[i + 3*stride] + ((z0 - z3) >> 6));
     }
 }
 
-void FUNCC(ff_h264_idct_add)(uint8_t *dst, DCTELEM *block, int stride){
-    FUNCC(idct_internal)(dst, block, stride, 4, 6, 1);
-}
-
-void FUNCC(ff_h264_lowres_idct_add)(uint8_t *dst, int stride, DCTELEM *block){
-    FUNCC(idct_internal)(dst, block, stride, 8, 3, 1);
-}
-
-void FUNCC(ff_h264_lowres_idct_put)(uint8_t *dst, int stride, DCTELEM *block){
-    FUNCC(idct_internal)(dst, block, stride, 8, 3, 0);
-}
-
 void FUNCC(ff_h264_idct8_add)(uint8_t *_dst, DCTELEM *_block, int stride){
     int i;
     INIT_CLIP
@@ -200,7 +189,7 @@ void FUNCC(ff_h264_idct_add16)(uint8_t *dst, const int *block_offset, DCTELEM *b
         int nnz = nnzc[ scan8[i] ];
         if(nnz){
             if(nnz==1 && ((dctcoef*)block)[i*16]) FUNCC(ff_h264_idct_dc_add)(dst + block_offset[i], block + i*16*sizeof(pixel), stride);
-            else                                  FUNCC(idct_internal      )(dst + block_offset[i], block + i*16*sizeof(pixel), stride, 4, 6, 1);
+            else                                  FUNCC(ff_h264_idct_add   )(dst + block_offset[i], block + i*16*sizeof(pixel), stride);
         }
     }
 }
@@ -208,7 +197,7 @@ void FUNCC(ff_h264_idct_add16)(uint8_t *dst, const int *block_offset, DCTELEM *b
 void FUNCC(ff_h264_idct_add16intra)(uint8_t *dst, const int *block_offset, DCTELEM *block, int stride, const uint8_t nnzc[15*8]){
     int i;
     for(i=0; i<16; i++){
-        if(nnzc[ scan8[i] ])             FUNCC(idct_internal      )(dst + block_offset[i], block + i*16*sizeof(pixel), stride, 4, 6, 1);
+        if(nnzc[ scan8[i] ])             FUNCC(ff_h264_idct_add   )(dst + block_offset[i], block + i*16*sizeof(pixel), stride);
         else if(((dctcoef*)block)[i*16]) FUNCC(ff_h264_idct_dc_add)(dst + block_offset[i], block + i*16*sizeof(pixel), stride);
     }
 }