shithub: openh264

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ref: 8492aac917af81807ca7b3c33d27b318e44ee3e7
parent: 6714b8ae993b5e049262444a9f17d9552188a68f
parent: 734e60aeeb1c5500826ac4e4745898ddd8e96b9a
author: Licai Guo <[email protected]>
date: Fri Mar 14 09:11:45 EDT 2014 

Merge pull request #486 from huili2/nzc_bug_fix

nzc bug fix and clear


--- a/codec/decoder/core/src/decode_slice.cpp
+++ b/codec/decoder/core/src/decode_slice.cpp
@@ -517,7 +517,7 @@
     //step 3: update QP and pNonZeroCount
     pCurLayer->pLumaQp[iMbXy] = 0;
     pCurLayer->pChromaQp[iMbXy] = 0;
-    memset (pCurLayer->pNzc[iMbXy], 16, sizeof (pCurLayer->pNzc[iMbXy]));   //JVT-x201wcm1.doc, page229, 2009.10.23
+    memset (pCurLayer->pNzc[iMbXy], 16, sizeof (pCurLayer->pNzc[iMbXy]));   //Rec. 9.2.1 for PCM, nzc=16
     return 0;
   } else if (0 == uiMbType) { //reference to JM
     ENFORCE_STACK_ALIGN_1D (int8_t, pIntraPredMode, 48, 16);
@@ -617,11 +617,6 @@
         ST32 (&pCurLayer->pNzc[iMbXy][4], LD32 (&pNonZeroCount[1 + 8 * 2]));
         ST32 (&pCurLayer->pNzc[iMbXy][8], LD32 (&pNonZeroCount[1 + 8 * 3]));
         ST32 (&pCurLayer->pNzc[iMbXy][12], LD32 (&pNonZeroCount[1 + 8 * 4]));
-      } else { //pNonZeroCount = 0
-        ST32 (&pCurLayer->pNzc[iMbXy][0], 0);
-        ST32 (&pCurLayer->pNzc[iMbXy][4], 0);
-        ST32 (&pCurLayer->pNzc[iMbXy][8], 0);
-        ST32 (&pCurLayer->pNzc[iMbXy][12], 0);
       }
     } else { //non-MB_TYPE_INTRA16x16
       for (iId8x8 = 0; iId8x8 < 4; iId8x8++) {
@@ -676,20 +671,8 @@
       ST16 (&pCurLayer->pNzc[iMbXy][20], LD16 (&pNonZeroCount[6 + 8 * 2]));
       ST16 (&pCurLayer->pNzc[iMbXy][18], LD16 (&pNonZeroCount[6 + 8 * 4]));
       ST16 (&pCurLayer->pNzc[iMbXy][22], LD16 (&pNonZeroCount[6 + 8 * 5]));
-    } else {
-      ST16 (&pCurLayer->pNzc[iMbXy][16], 0);
-      ST16 (&pCurLayer->pNzc[iMbXy][20], 0);
-      ST16 (&pCurLayer->pNzc[iMbXy][18], 0);
-      ST16 (&pCurLayer->pNzc[iMbXy][22], 0);
     }
     BsEndCavlc (pBs);
-  } else {
-    ST32 (&pCurLayer->pNzc[iMbXy][0], 0);
-    ST32 (&pCurLayer->pNzc[iMbXy][4], 0);
-    ST32 (&pCurLayer->pNzc[iMbXy][8], 0);
-    ST32 (&pCurLayer->pNzc[iMbXy][12], 0);
-    ST32 (&pCurLayer->pNzc[iMbXy][16], 0);
-    ST32 (&pCurLayer->pNzc[iMbXy][20], 0);
   }
 
   return 0;
@@ -827,10 +810,13 @@
       //step 3: update QP and pNonZeroCount
       pCurLayer->pLumaQp[iMbXy] = 0;
       pCurLayer->pChromaQp[iMbXy] = 0;
-      ST32 (&pCurLayer->pNzc[iMbXy][0], 0);
-      ST32 (&pCurLayer->pNzc[iMbXy][4], 0);
-      ST32 (&pCurLayer->pNzc[iMbXy][8], 0);
-      ST32 (&pCurLayer->pNzc[iMbXy][12], 0);
+      //Rec. 9.2.1 for PCM, nzc=16
+      ST32 (&pCurLayer->pNzc[iMbXy][0], 0x10101010);
+      ST32 (&pCurLayer->pNzc[iMbXy][4], 0x10101010);
+      ST32 (&pCurLayer->pNzc[iMbXy][8], 0x10101010);
+      ST32 (&pCurLayer->pNzc[iMbXy][12], 0x10101010);
+      ST32 (&pCurLayer->pNzc[iMbXy][16], 0x10101010);
+      ST32 (&pCurLayer->pNzc[iMbXy][20], 0x10101010);
       return 0;
     } else {
       if (0 == uiMbType) {
@@ -883,6 +869,7 @@
     ST32 (&pCurLayer->pNzc[iMbXy][4], 0);
     ST32 (&pCurLayer->pNzc[iMbXy][8], 0);
     ST32 (&pCurLayer->pNzc[iMbXy][12], 0);
+    ST32 (&pCurLayer->pNzc[iMbXy][16], 0);
     ST32 (&pCurLayer->pNzc[iMbXy][20], 0);
     if (pCurLayer->pCbp[iMbXy] == 0 && !IS_INTRA16x16 (pCurLayer->pMbType[iMbXy]) && !IS_I_BL (pCurLayer->pMbType[iMbXy])) {
       pCurLayer->pLumaQp[iMbXy] = pSlice->iLastMbQp;
@@ -939,11 +926,6 @@
         ST32 (&pCurLayer->pNzc[iMbXy][4], LD32 (&pNonZeroCount[1 + 8 * 2]));
         ST32 (&pCurLayer->pNzc[iMbXy][8], LD32 (&pNonZeroCount[1 + 8 * 3]));
         ST32 (&pCurLayer->pNzc[iMbXy][12], LD32 (&pNonZeroCount[1 + 8 * 4]));
-      } else { //pNonZeroCount = 0
-        ST32 (&pCurLayer->pNzc[iMbXy][0], 0);
-        ST32 (&pCurLayer->pNzc[iMbXy][4], 0);
-        ST32 (&pCurLayer->pNzc[iMbXy][8], 0);
-        ST32 (&pCurLayer->pNzc[iMbXy][12], 0);
       }
     } else { //non-MB_TYPE_INTRA16x16
       for (iId8x8 = 0; iId8x8 < 4; iId8x8++) {
@@ -999,18 +981,8 @@
       ST16 (&pCurLayer->pNzc[iMbXy][20], LD16 (&pNonZeroCount[6 + 8 * 2]));
       ST16 (&pCurLayer->pNzc[iMbXy][18], LD16 (&pNonZeroCount[6 + 8 * 4]));
       ST16 (&pCurLayer->pNzc[iMbXy][22], LD16 (&pNonZeroCount[6 + 8 * 5]));
-    } else {
-      ST32 (&pCurLayer->pNzc[iMbXy][16], 0);
-      ST32 (&pCurLayer->pNzc[iMbXy][20], 0);
     }
     BsEndCavlc (pBs);
-  } else {
-    ST32 (&pCurLayer->pNzc[iMbXy][0], 0);
-    ST32 (&pCurLayer->pNzc[iMbXy][4], 0);
-    ST32 (&pCurLayer->pNzc[iMbXy][8], 0);
-    ST32 (&pCurLayer->pNzc[iMbXy][12], 0);
-    ST32 (&pCurLayer->pNzc[iMbXy][16], 0);
-    ST32 (&pCurLayer->pNzc[iMbXy][20], 0);
   }
 
   return 0;