[x265] [PATCH] stats: count of each CU partition per frame

Divya Manivannan divya at multicorewareinc.com
Mon Jul 6 07:29:18 CEST 2015


# HG changeset patch
# User Divya Manivannan <divya at multicorewareinc.com>
# Date 1435741578 -19800
#      Wed Jul 01 14:36:18 2015 +0530
# Node ID fab7c493b7ce3845565f9fbe07ebc183c22e928c
# Parent  1162fb0b99f82d32529f396e3afb6966cc38ec02
stats: count of each CU partition per frame

diff -r 1162fb0b99f8 -r fab7c493b7ce doc/reST/api.rst
--- a/doc/reST/api.rst	Fri Jul 03 13:43:47 2015 -0500
+++ b/doc/reST/api.rst	Wed Jul 01 14:36:18 2015 +0530
@@ -338,10 +338,6 @@
 Cleanup
 =======
 
-	/* x265_encoder_log:
-	 *       This function is now deprecated */
-	void x265_encoder_log(x265_encoder *encoder, int argc, char **argv);
-
 Finally, the encoder must be closed in order to free all of its
 resources. An encoder that has been flushed cannot be restarted and
 reused. Once **x265_encoder_close()** has been called, the encoder
diff -r 1162fb0b99f8 -r fab7c493b7ce source/CMakeLists.txt
--- a/source/CMakeLists.txt	Fri Jul 03 13:43:47 2015 -0500
+++ b/source/CMakeLists.txt	Wed Jul 01 14:36:18 2015 +0530
@@ -30,7 +30,7 @@
 mark_as_advanced(FPROFILE_USE FPROFILE_GENERATE NATIVE_BUILD)
 
 # X265_BUILD must be incremented each time the public API is changed
-set(X265_BUILD 63)
+set(X265_BUILD 64)
 configure_file("${PROJECT_SOURCE_DIR}/x265.def.in"
                "${PROJECT_BINARY_DIR}/x265.def")
 configure_file("${PROJECT_SOURCE_DIR}/x265_config.h.in"
diff -r 1162fb0b99f8 -r fab7c493b7ce source/common/framedata.h
--- a/source/common/framedata.h	Fri Jul 03 13:43:47 2015 -0500
+++ b/source/common/framedata.h	Wed Jul 01 14:36:18 2015 +0530
@@ -34,6 +34,9 @@
 class PicYuv;
 class JobProvider;
 
+#define INTER_MODES 4 // 2Nx2N, 2NxN, Nx2N, AMP modes
+#define INTRA_MODES 3 // DC, Planar, Angular modes
+
 /* Current frame stats for 2 pass */
 struct FrameStats
 {
@@ -49,6 +52,25 @@
     double      percent8x8Intra;
     double      percent8x8Inter;
     double      percent8x8Skip;
+    double      percentIntraNxN;
+    double      percentSkipCu[NUM_CU_DEPTH];
+    double      percentMergeCu[NUM_CU_DEPTH];
+    double      percentIntraDistribution[NUM_CU_DEPTH][INTRA_MODES];
+    double      percentInterDistribution[NUM_CU_DEPTH][3];           // 2Nx2N, RECT, AMP modes percentage
+
+    uint64_t    cntIntraNxN;
+    uint64_t    totalCu;
+    uint64_t    cntSkipCu[NUM_CU_DEPTH];
+    uint64_t    cntMergeCu[NUM_CU_DEPTH];
+    uint64_t    cntInter[NUM_CU_DEPTH];
+    uint64_t    cntIntra[NUM_CU_DEPTH];
+    uint64_t    cuInterDistribution[NUM_CU_DEPTH][INTER_MODES];
+    uint64_t    cuIntraDistribution[NUM_CU_DEPTH][INTRA_MODES];
+
+    FrameStats()
+    {
+        memset(this, 0, sizeof(FrameStats));
+    }
 };
 
 /* Per-frame data that is used during encodes and referenced while the picture
diff -r 1162fb0b99f8 -r fab7c493b7ce source/encoder/encoder.cpp
--- a/source/encoder/encoder.cpp	Fri Jul 03 13:43:47 2015 -0500
+++ b/source/encoder/encoder.cpp	Wed Jul 01 14:36:18 2015 +0530
@@ -1163,6 +1163,18 @@
         else
             frameStats->avgWPP = 1;
         frameStats->countRowBlocks = curEncoder->m_countRowBlocks;
+
+        frameStats->cuStats.percentIntraNxN = curFrame->m_encData->m_frameStats.percentIntraNxN;
+        for (uint32_t depth = 0; depth <= g_maxCUDepth; depth++)
+        {
+            frameStats->cuStats.percentSkipCu[depth]  = curFrame->m_encData->m_frameStats.percentSkipCu[depth];
+            frameStats->cuStats.percentMergeCu[depth] = curFrame->m_encData->m_frameStats.percentMergeCu[depth];
+            frameStats->cuStats.percentInterDistribution[depth][0] = curFrame->m_encData->m_frameStats.percentInterDistribution[depth][0];
+            frameStats->cuStats.percentInterDistribution[depth][1] = curFrame->m_encData->m_frameStats.percentInterDistribution[depth][1];
+            frameStats->cuStats.percentInterDistribution[depth][2] = curFrame->m_encData->m_frameStats.percentInterDistribution[depth][2];
+            for (int n = 0; n < INTRA_MODES; n++)
+                frameStats->cuStats.percentIntraDistribution[depth][n] = curFrame->m_encData->m_frameStats.percentIntraDistribution[depth][n];
+        }
     }
 }
 
diff -r 1162fb0b99f8 -r fab7c493b7ce source/encoder/frameencoder.cpp
--- a/source/encoder/frameencoder.cpp	Fri Jul 03 13:43:47 2015 -0500
+++ b/source/encoder/frameencoder.cpp	Wed Jul 01 14:36:18 2015 +0530
@@ -583,6 +583,33 @@
         m_frame->m_encData->m_frameStats.percent8x8Inter = (double)totalP / totalCuCount;
         m_frame->m_encData->m_frameStats.percent8x8Skip  = (double)totalSkip / totalCuCount;
     }
+    for (uint32_t i = 0; i < m_numRows; i++)
+    {
+        m_frame->m_encData->m_frameStats.cntIntraNxN += m_rows[i].rowStats.cntIntraNxN;
+        m_frame->m_encData->m_frameStats.totalCu     += m_rows[i].rowStats.totalCu;
+        for (uint32_t depth = 0; depth <= g_maxCUDepth; depth++)
+        {
+            m_frame->m_encData->m_frameStats.cntSkipCu[depth] += m_rows[i].rowStats.cntSkipCu[depth];
+            m_frame->m_encData->m_frameStats.cntMergeCu[depth] += m_rows[i].rowStats.cntMergeCu[depth];
+            for (int m = 0; m < INTER_MODES; m++)
+                m_frame->m_encData->m_frameStats.cuInterDistribution[depth][m] += m_rows[i].rowStats.cuInterDistribution[depth][m];
+            for (int n = 0; n < INTRA_MODES; n++)
+                m_frame->m_encData->m_frameStats.cuIntraDistribution[depth][n] += m_rows[i].rowStats.cuIntraDistribution[depth][n];
+        }
+    }
+    m_frame->m_encData->m_frameStats.percentIntraNxN = (double)(m_frame->m_encData->m_frameStats.cntIntraNxN * 100) / m_frame->m_encData->m_frameStats.totalCu;
+    for (uint32_t depth = 0; depth <= g_maxCUDepth; depth++)
+    {
+        m_frame->m_encData->m_frameStats.percentSkipCu[depth]  = (double)(m_frame->m_encData->m_frameStats.cntSkipCu[depth] * 100) / m_frame->m_encData->m_frameStats.totalCu;
+        m_frame->m_encData->m_frameStats.percentMergeCu[depth] = (double)(m_frame->m_encData->m_frameStats.cntMergeCu[depth] * 100) / m_frame->m_encData->m_frameStats.totalCu;
+        for (int n = 0; n < INTRA_MODES; n++)
+            m_frame->m_encData->m_frameStats.percentIntraDistribution[depth][n] = (double)(m_frame->m_encData->m_frameStats.cuIntraDistribution[depth][n] * 100) / m_frame->m_encData->m_frameStats.totalCu;
+        uint64_t cuInterRectCnt = 0; // sum of Nx2N, 2NxN counts
+        cuInterRectCnt += m_frame->m_encData->m_frameStats.cuInterDistribution[depth][1] + m_frame->m_encData->m_frameStats.cuInterDistribution[depth][2];
+        m_frame->m_encData->m_frameStats.percentInterDistribution[depth][0] = (double)(m_frame->m_encData->m_frameStats.cuInterDistribution[depth][0] * 100) / m_frame->m_encData->m_frameStats.totalCu;
+        m_frame->m_encData->m_frameStats.percentInterDistribution[depth][1] = (double)(cuInterRectCnt * 100) / m_frame->m_encData->m_frameStats.totalCu;
+        m_frame->m_encData->m_frameStats.percentInterDistribution[depth][2] = (double)(m_frame->m_encData->m_frameStats.cuInterDistribution[depth][3] * 100) / m_frame->m_encData->m_frameStats.totalCu;
+    }
 
     m_bs.resetBits();
     m_entropyCoder.load(m_initSliceContext);
@@ -838,13 +865,6 @@
     const uint32_t lineStartCUAddr = row * numCols;
     bool bIsVbv = m_param->rc.vbvBufferSize > 0 && m_param->rc.vbvMaxBitrate > 0;
 
-    /* These store the count of inter, intra and skip cus within quad tree structure of each CTU */
-    uint32_t qTreeInterCnt[NUM_CU_DEPTH];
-    uint32_t qTreeIntraCnt[NUM_CU_DEPTH];
-    uint32_t qTreeSkipCnt[NUM_CU_DEPTH];
-    for (uint32_t depth = 0; depth <= g_maxCUDepth; depth++)
-        qTreeIntraCnt[depth] = qTreeInterCnt[depth] = qTreeSkipCnt[depth] = 0;
-
     while (curRow.completed < numCols)
     {
         ProfileScopeEvent(encodeCTU);
@@ -916,30 +936,42 @@
         // Completed CU processing
         curRow.completed++;
 
-        if (m_param->rc.bStatWrite)
-            curEncData.m_rowStat[row].sumQpAq += collectCTUStatistics(*ctu, qTreeInterCnt, qTreeIntraCnt, qTreeSkipCnt);
-        else if (m_param->rc.aqMode)
-            curEncData.m_rowStat[row].sumQpAq += calcCTUQP(*ctu);
+        FrameStats frameLog;
+        curEncData.m_rowStat[row].sumQpAq += collectCTUStatistics(*ctu, &frameLog);
 
         // copy no. of intra, inter Cu cnt per row into frame stats for 2 pass
         if (m_param->rc.bStatWrite)
         {
-            curRow.rowStats.mvBits += best.mvBits;
+            curRow.rowStats.mvBits    += best.mvBits;
             curRow.rowStats.coeffBits += best.coeffBits;
-            curRow.rowStats.miscBits += best.totalBits - (best.mvBits + best.coeffBits);
+            curRow.rowStats.miscBits  += best.totalBits - (best.mvBits + best.coeffBits);
 
             for (uint32_t depth = 0; depth <= g_maxCUDepth; depth++)
             {
                 /* 1 << shift == number of 8x8 blocks at current depth */
                 int shift = 2 * (g_maxCUDepth - depth);
-                curRow.rowStats.intra8x8Cnt += qTreeIntraCnt[depth] << shift;
-                curRow.rowStats.inter8x8Cnt += qTreeInterCnt[depth] << shift;
-                curRow.rowStats.skip8x8Cnt  += qTreeSkipCnt[depth] << shift;
+                int cuSize = g_maxCUSize >> depth;
 
-                // clear the row cu data from thread local object
-                qTreeIntraCnt[depth] = qTreeInterCnt[depth] = qTreeSkipCnt[depth] = 0;
+                if (cuSize == 8)
+                    curRow.rowStats.intra8x8Cnt += (int)(frameLog.cntIntra[depth] + frameLog.cntIntraNxN);
+                else
+                    curRow.rowStats.intra8x8Cnt += (int)(frameLog.cntIntra[depth] << shift);
+
+                curRow.rowStats.inter8x8Cnt += (int)(frameLog.cntInter[depth] << shift);
+                curRow.rowStats.skip8x8Cnt  += (int)(frameLog.cntSkipCu[depth] << shift);
             }
         }
+        curRow.rowStats.cntIntraNxN += frameLog.cntIntraNxN;
+        curRow.rowStats.totalCu     += frameLog.totalCu;
+        for (uint32_t depth = 0; depth <= g_maxCUDepth; depth++)
+        {
+            curRow.rowStats.cntSkipCu[depth] += frameLog.cntSkipCu[depth];
+            curRow.rowStats.cntMergeCu[depth] += frameLog.cntMergeCu[depth];
+            for (int m = 0; m < INTER_MODES; m++)
+                curRow.rowStats.cuInterDistribution[depth][m] += frameLog.cuInterDistribution[depth][m];
+            for (int n = 0; n < INTRA_MODES; n++)
+                curRow.rowStats.cuIntraDistribution[depth][n] += frameLog.cuIntraDistribution[depth][n];
+        }
 
         curEncData.m_cuStat[cuAddr].totalBits = best.totalBits;
         x265_emms();
@@ -1115,11 +1147,9 @@
 }
 
 /* collect statistics about CU coding decisions, return total QP */
-int FrameEncoder::collectCTUStatistics(const CUData& ctu, uint32_t* qtreeInterCnt, uint32_t* qtreeIntraCnt, uint32_t* qtreeSkipCnt)
+int FrameEncoder::collectCTUStatistics(const CUData& ctu, FrameStats* log)
 {
-    StatisticLog* log = &m_sliceTypeLog[ctu.m_slice->m_sliceType];
     int totQP = 0;
-
     if (ctu.m_slice->m_sliceType == I_SLICE)
     {
         uint32_t depth = 0;
@@ -1129,14 +1159,12 @@
 
             log->totalCu++;
             log->cntIntra[depth]++;
-            qtreeIntraCnt[depth]++;
             totQP += ctu.m_qp[absPartIdx] * (ctu.m_numPartitions >> (depth * 2));
 
             if (ctu.m_predMode[absPartIdx] == MODE_NONE)
             {
                 log->totalCu--;
                 log->cntIntra[depth]--;
-                qtreeIntraCnt[depth]--;
             }
             else if (ctu.m_partSize[absPartIdx] != SIZE_2Nx2N)
             {
@@ -1159,24 +1187,20 @@
             depth = ctu.m_cuDepth[absPartIdx];
 
             log->totalCu++;
-            log->cntTotalCu[depth]++;
             totQP += ctu.m_qp[absPartIdx] * (ctu.m_numPartitions >> (depth * 2));
 
             if (ctu.m_predMode[absPartIdx] == MODE_NONE)
-            {
                 log->totalCu--;
-                log->cntTotalCu[depth]--;
-            }
             else if (ctu.isSkipped(absPartIdx))
             {
-                log->totalCu--;
-                log->cntSkipCu[depth]++;
-                qtreeSkipCnt[depth]++;
+                if (ctu.m_mergeFlag[0])
+                    log->cntMergeCu[depth]++;
+                else
+                    log->cntSkipCu[depth]++;
             }
             else if (ctu.isInter(absPartIdx))
             {
                 log->cntInter[depth]++;
-                qtreeInterCnt[depth]++;
 
                 if (ctu.m_partSize[absPartIdx] < AMP_ID)
                     log->cuInterDistribution[depth][ctu.m_partSize[absPartIdx]]++;
@@ -1186,7 +1210,6 @@
             else if (ctu.isIntra(absPartIdx))
             {
                 log->cntIntra[depth]++;
-                qtreeIntraCnt[depth]++;
 
                 if (ctu.m_partSize[absPartIdx] != SIZE_2Nx2N)
                 {
@@ -1206,21 +1229,6 @@
     return totQP;
 }
 
-/* iterate over coded CUs and determine total QP */
-int FrameEncoder::calcCTUQP(const CUData& ctu)
-{
-    int totQP = 0;
-    uint32_t depth = 0, numParts = ctu.m_numPartitions;
-
-    for (uint32_t absPartIdx = 0; absPartIdx < ctu.m_numPartitions; absPartIdx += numParts)
-    {
-        depth = ctu.m_cuDepth[absPartIdx];
-        numParts = ctu.m_numPartitions >> (depth * 2);
-        totQP += ctu.m_qp[absPartIdx] * numParts;
-    }
-    return totQP;
-}
-
 /* DCT-domain noise reduction / adaptive deadzone from libavcodec */
 void FrameEncoder::noiseReductionUpdate()
 {
diff -r 1162fb0b99f8 -r fab7c493b7ce source/encoder/frameencoder.h
--- a/source/encoder/frameencoder.h	Fri Jul 03 13:43:47 2015 -0500
+++ b/source/encoder/frameencoder.h	Wed Jul 01 14:36:18 2015 +0530
@@ -49,8 +49,6 @@
 
 #define ANGULAR_MODE_ID 2
 #define AMP_ID 3
-#define INTER_MODES 4
-#define INTRA_MODES 3
 
 struct StatisticLog
 {
@@ -156,7 +154,6 @@
     MD5Context               m_state[3];
     uint32_t                 m_crc[3];
     uint32_t                 m_checksum[3];
-    StatisticLog             m_sliceTypeLog[3];     // per-slice type CU statistics
 
     volatile int             m_activeWorkerCount;        // count of workers currently encoding or filtering CTUs
     volatile int             m_totalActiveWorkerCount;   // sum of m_activeWorkerCount sampled at end of each CTU
@@ -220,8 +217,7 @@
     void encodeSlice();
 
     void threadMain();
-    int  collectCTUStatistics(const CUData& ctu, uint32_t* qtreeInterCnt, uint32_t* qtreeIntraCnt, uint32_t* qtreeSkipCnt);
-    int  calcCTUQP(const CUData& ctu);
+    int  collectCTUStatistics(const CUData& ctu, FrameStats* frameLog);
     void noiseReductionUpdate();
 
     /* Called by WaveFront::findJob() */
diff -r 1162fb0b99f8 -r fab7c493b7ce source/x265.cpp
--- a/source/x265.cpp	Fri Jul 03 13:43:47 2015 -0500
+++ b/source/x265.cpp	Wed Jul 01 14:36:18 2015 +0530
@@ -171,7 +171,49 @@
                     fprintf(csvfpt, "RateFactor, ");
                 fprintf(csvfpt, "Y PSNR, U PSNR, V PSNR, YUV PSNR, SSIM, SSIM (dB),  List 0, List 1");
                 /* detailed performance statistics */
-                fprintf(csvfpt, ", DecideWait (ms), Row0Wait (ms), Wall time (ms), Ref Wait Wall (ms), Total CTU time (ms), Stall Time (ms), Avg WPP, Row Blocks\n");
+                fprintf(csvfpt, ", DecideWait (ms), Row0Wait (ms), Wall time (ms), Ref Wait Wall (ms), Total CTU time (ms), Stall Time (ms), Avg WPP, Row Blocks");
+                if (csvLogLevel >= 2)
+                {
+                    uint32_t size = param->maxCUSize;
+                    for (uint32_t depth = 0; depth <= g_maxCUDepth; depth++)
+                    {
+                        fprintf(csvfpt, ", Intra %dx%d DC, Intra %dx%d Planar, Intra %dx%d Ang", size, size, size, size, size, size);
+                        size /= 2;
+                    }
+                    fprintf(csvfpt, ", 4x4");
+                    size = param->maxCUSize;
+                    if (param->bEnableRectInter)
+                    {
+                        for (uint32_t depth = 0; depth <= g_maxCUDepth; depth++)
+                        {
+                            fprintf(csvfpt, ", Inter %dx%d, Inter %dx%d (Rect)", size, size, size, size);
+                            if (param->bEnableAMP)
+                                fprintf(csvfpt, ", Inter %dx%d (Amp)", size, size);
+                            size /= 2;
+                        }
+                    }
+                    else
+                    {
+                        for (uint32_t depth = 0; depth <= g_maxCUDepth; depth++)
+                        {
+                            fprintf(csvfpt, ", Inter %dx%d", size, size);
+                            size /= 2;
+                        }
+                    }
+                    size = param->maxCUSize;
+                    for (uint32_t depth = 0; depth <= g_maxCUDepth; depth++)
+                    {
+                        fprintf(csvfpt, ", Skip %dx%d", size, size);
+                        size /= 2;
+                    }
+                    size = param->maxCUSize;
+                    for (uint32_t depth = 0; depth <= g_maxCUDepth; depth++)
+                    {
+                        fprintf(csvfpt, ", Merge %dx%d", size, size);
+                        size /= 2;
+                    }
+                }
+                fprintf(csvfpt, "\n");
             }
             else
                 fputs(summaryCSVHeader, csvfpt);
@@ -312,6 +354,30 @@
         }
         fprintf(csvfpt, " %.1lf, %.1lf, %.1lf, %.1lf, %.1lf, %.1lf,", frameStats->decideWaitTime, frameStats->row0WaitTime, frameStats->wallTime, frameStats->refWaitWallTime, frameStats->totalCTUTime, frameStats->stallTime);
         fprintf(csvfpt, " %.3lf, %d", frameStats->avgWPP, frameStats->countRowBlocks);
+        if (csvLogLevel >= 2)
+        {
+            for (uint32_t depth = 0; depth <= g_maxCUDepth; depth++)
+                fprintf(csvfpt, ", %5.2lf%%, %5.2lf%%, %5.2lf%%", frameStats->cuStats.percentIntraDistribution[depth][0], frameStats->cuStats.percentIntraDistribution[depth][1], frameStats->cuStats.percentIntraDistribution[depth][2]);
+            fprintf(csvfpt, ", %5.2lf%%", frameStats->cuStats.percentIntraNxN);
+            if (param->bEnableRectInter)
+            {
+                for (uint32_t depth = 0; depth <= g_maxCUDepth; depth++)
+                {
+                    fprintf(csvfpt, ", %5.2lf%%, %5.2lf%%", frameStats->cuStats.percentInterDistribution[depth][0], frameStats->cuStats.percentInterDistribution[depth][1]);
+                    if (param->bEnableAMP)
+                        fprintf(csvfpt, ", %5.2lf%%", frameStats->cuStats.percentInterDistribution[depth][2]);
+                }
+            }
+            else
+            {
+                for (uint32_t depth = 0; depth <= g_maxCUDepth; depth++)
+                    fprintf(csvfpt, ", %5.2lf%%", frameStats->cuStats.percentInterDistribution[depth][0]);
+            }
+            for (uint32_t depth = 0; depth <= g_maxCUDepth; depth++)
+                fprintf(csvfpt, ", %5.2lf%%", frameStats->cuStats.percentSkipCu[depth]);
+            for (uint32_t depth = 0; depth <= g_maxCUDepth; depth++)
+                fprintf(csvfpt, ", %5.2lf%%", frameStats->cuStats.percentMergeCu[depth]);
+        }
         fprintf(csvfpt, "\n");
         fflush(stderr);
     }
@@ -703,17 +769,6 @@
     if (cliopt.reconPlayCmd)
         reconPlay = new ReconPlay(cliopt.reconPlayCmd, *param);
 
-    if (cliopt.csvfn)
-    {
-        if (cliopt.parseCSVFile())
-        {
-            cliopt.destroy();
-            if (cliopt.api)
-                cliopt.api->param_free(cliopt.param);
-            exit(5);
-        }
-    }
-
     /* note: we could try to acquire a different libx265 API here based on
      * the profile found during option parsing, but it must be done before
      * opening an encoder */
@@ -731,6 +786,17 @@
     /* get the encoder parameters post-initialization */
     api->encoder_parameters(encoder, param);
 
+    if (cliopt.csvfn)
+    {
+        if (cliopt.parseCSVFile())
+        {
+            cliopt.destroy();
+            if (cliopt.api)
+                cliopt.api->param_free(cliopt.param);
+            exit(5);
+        }
+    }
+
     /* Control-C handler */
     if (signal(SIGINT, sigint_handler) == SIG_ERR)
         x265_log(param, X265_LOG_ERROR, "Unable to register CTRL+C handler: %s\n", strerror(errno));
diff -r 1162fb0b99f8 -r fab7c493b7ce source/x265.h
--- a/source/x265.h	Fri Jul 03 13:43:47 2015 -0500
+++ b/source/x265.h	Wed Jul 01 14:36:18 2015 +0530
@@ -100,6 +100,18 @@
     uint32_t         numPartitions;
 } x265_analysis_data;
 
+/* cu statistics */
+typedef struct x265_cu_stats
+{
+    double      percentSkipCu[4];                // Percentage of skip cu in all depths
+    double      percentMergeCu[4];               // Percentage of merge cu in all depths
+    double      percentIntraDistribution[4][3];  // Percentage of DC, Planar, Angular intra modes in all depths
+    double      percentInterDistribution[4][3];  // Percentage of 2Nx2N inter, rect and amp in all depths
+    double      percentIntraNxN;                 // Percentage of 4x4 cu
+
+    /* All the above values will add up to 100%. */
+} x265_cu_stats;
+
 /* Frame level statistics */
 typedef struct x265_frame_stats
 {
@@ -124,6 +136,7 @@
     int              list0POC[16];
     int              list1POC[16];
     char             sliceType;
+    x265_cu_stats    cuStats;
 } x265_frame_stats;
 
 /* Used to pass pictures into the encoder, and to get picture data back out of


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