postproc: Made QP, nonBQP, and pQPb arrays

Also pulled QP initialization out of inner loop, which removed some redundent code.

Added some dummy fields to PPContext to allow current code to work while
changing the rest of the postprocessing code to support the arrays.

I also increased alignment requirements for some fields in the PPContext struct to
support future avx2 code.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libpostproc/postprocess_internal.h

@@ -143,8 +143,11 @@ typedef struct PPContext{
     DECLARE_ALIGNED(8, uint64_t, pQPb);
     DECLARE_ALIGNED(8, uint64_t, pQPb2);
 
-    DECLARE_ALIGNED(8, uint64_t, mmxDcOffset)[64];
-    DECLARE_ALIGNED(8, uint64_t, mmxDcThreshold)[64];
+    DECLARE_ALIGNED(32, uint64_t, pQPb_block)[4];
+    DECLARE_ALIGNED(32, uint64_t, pQPb2_block)[4];
+
+    DECLARE_ALIGNED(32, uint64_t, mmxDcOffset)[64];
+    DECLARE_ALIGNED(32, uint64_t, mmxDcThreshold)[64];
 
     QP_STORE_T *stdQPTable;       ///< used to fix MPEG2 style qscale
     QP_STORE_T *nonBQPTable;
@@ -153,6 +156,9 @@ typedef struct PPContext{
     int QP;
     int nonBQP;
 
+    DECLARE_ALIGNED(32, int, QP_block)[4];
+    DECLARE_ALIGNED(32, int, nonBQP_block)[4];
+
     int frameNum;
 
     int cpuCaps;

libpostproc/postprocess_template.c

@@ -3479,7 +3479,7 @@ static void RENAME(postProcess)(const uint8_t src[], int srcStride, uint8_t dst[
 #endif
         const int8_t *QPptr= &QPs[(y>>qpVShift)*QPStride];
         int8_t *nonBQPptr= &c.nonBQPTable[(y>>qpVShift)*FFABS(QPStride)];
-        int QP=0;
+        int QP=0, nonBQP=0;
         /* can we mess with a 8x16 block from srcBlock/dstBlock downwards and 1 line upwards
            if not than use a temporary buffer */
         if(y+15 >= height){
@@ -3512,6 +3512,29 @@ static void RENAME(postProcess)(const uint8_t src[], int srcStride, uint8_t dst[
             int endx = FFMIN(width, x+32);
             uint8_t *dstBlockStart = dstBlock;
             const uint8_t *srcBlockStart = srcBlock;
+            int qp_index = 0;
+            for(qp_index=0; qp_index < (endx-startx)/BLOCK_SIZE; qp_index++){
+                QP = QPptr[(x+qp_index*BLOCK_SIZE)>>qpHShift];
+                nonBQP = nonBQPptr[(x+qp_index*BLOCK_SIZE)>>qpHShift];
+            if(!isColor){
+                QP= (QP* QPCorrecture + 256*128)>>16;
+                nonBQP= (nonBQP* QPCorrecture + 256*128)>>16;
+                yHistogram[(srcBlock+qp_index*8)[srcStride*12 + 4]]++;
+            }
+            c.QP_block[qp_index] = QP;
+            c.nonBQP_block[qp_index] = nonBQP;
+#if TEMPLATE_PP_MMX
+            __asm__ volatile(
+                "movd %1, %%mm7         \n\t"
+                "packuswb %%mm7, %%mm7  \n\t" // 0, 0, 0, QP, 0, 0, 0, QP
+                "packuswb %%mm7, %%mm7  \n\t" // 0,QP, 0, QP, 0,QP, 0, QP
+                "packuswb %%mm7, %%mm7  \n\t" // QP,..., QP
+                "movq %%mm7, %0         \n\t"
+                : "=m" (c.pQPb_block[qp_index])
+                : "r" (QP)
+            );
+#endif
+            }
           for(; x < endx; x+=BLOCK_SIZE){
             RENAME(prefetchnta)(srcBlock + (((x>>2)&6) + copyAhead)*srcStride + 32);
             RENAME(prefetchnta)(srcBlock + (((x>>2)&6) + copyAhead+1)*srcStride + 32);
@@ -3543,27 +3566,15 @@ static void RENAME(postProcess)(const uint8_t src[], int srcStride, uint8_t dst[
           dstBlock = dstBlockStart;
           srcBlock = srcBlockStart;
 
-          for(x = startx; x < endx; x+=BLOCK_SIZE){
+          for(x = startx, qp_index = 0; x < endx; x+=BLOCK_SIZE, qp_index++){
             const int stride= dstStride;
-            QP = QPptr[x>>qpHShift];
-            c.nonBQP = nonBQPptr[x>>qpHShift];
-            if(!isColor){
-                QP= (QP* QPCorrecture + 256*128)>>16;
-                c.nonBQP= (c.nonBQP* QPCorrecture + 256*128)>>16;
-                yHistogram[srcBlock[srcStride*12 + 4]]++;
-            }
-            c.QP= QP;
-#if TEMPLATE_PP_MMX
-            __asm__ volatile(
-                "movd %1, %%mm7         \n\t"
-                "packuswb %%mm7, %%mm7  \n\t" // 0, 0, 0, QP, 0, 0, 0, QP
-                "packuswb %%mm7, %%mm7  \n\t" // 0,QP, 0, QP, 0,QP, 0, QP
-                "packuswb %%mm7, %%mm7  \n\t" // QP,..., QP
-                "movq %%mm7, %0         \n\t"
-                : "=m" (c.pQPb)
-                : "r" (QP)
-            );
-#endif
+            //temporary while changing QP stuff to make things continue to work
+            //eventually QP,nonBQP,etc will be arrays and this will be unnecessary
+            c.QP = c.QP_block[qp_index];
+            c.nonBQP = c.nonBQP_block[qp_index];
+            c.pQPb = c.pQPb_block[qp_index];
+            c.pQPb2 = c.pQPb2_block[qp_index];
+
             /* only deblock if we have 2 blocks */
             if(y + 8 < height){
                 if(mode & V_X1_FILTER)
@@ -3587,30 +3598,14 @@ static void RENAME(postProcess)(const uint8_t src[], int srcStride, uint8_t dst[
           dstBlock = dstBlockStart;
           srcBlock = srcBlockStart;
 
-          for(x = startx; x < endx; x+=BLOCK_SIZE){
+          for(x = startx, qp_index=0; x < endx; x+=BLOCK_SIZE, qp_index++){
             const int stride= dstStride;
             av_unused uint8_t *tmpXchg;
-
-            if(isColor){
-                QP= QPptr[x>>qpHShift];
-                c.nonBQP= nonBQPptr[x>>qpHShift];
-            }else{
-                QP= QPptr[x>>4];
-                QP= (QP* QPCorrecture + 256*128)>>16;
-                c.nonBQP= nonBQPptr[x>>4];
-                c.nonBQP= (c.nonBQP* QPCorrecture + 256*128)>>16;
-            }
-            c.QP= QP;
+            c.QP = c.QP_block[qp_index];
+            c.nonBQP = c.nonBQP_block[qp_index];
+            c.pQPb = c.pQPb_block[qp_index];
+            c.pQPb2 = c.pQPb2_block[qp_index];
 #if TEMPLATE_PP_MMX
-            __asm__ volatile(
-                "movd %1, %%mm7         \n\t"
-                "packuswb %%mm7, %%mm7  \n\t" // 0, 0, 0, QP, 0, 0, 0, QP
-                "packuswb %%mm7, %%mm7  \n\t" // 0,QP, 0, QP, 0,QP, 0, QP
-                "packuswb %%mm7, %%mm7  \n\t" // QP,..., QP
-                "movq %%mm7, %0         \n\t"
-                : "=m" (c.pQPb)
-                : "r" (QP)
-            );
             RENAME(transpose1)(tempBlock1, tempBlock2, dstBlock, dstStride);
 #endif
             /* check if we have a previous block to deblock it with dstBlock */
@@ -3632,7 +3627,7 @@ static void RENAME(postProcess)(const uint8_t src[], int srcStride, uint8_t dst[
 
 #else
                 if(mode & H_X1_FILTER)
-                    horizX1Filter(dstBlock-4, stride, QP);
+                    horizX1Filter(dstBlock-4, stride, c.QP);
                 else if(mode & H_DEBLOCK){
 #if TEMPLATE_PP_ALTIVEC
                     DECLARE_ALIGNED(16, unsigned char, tempBlock)[272];