shithub: libvpx

Download patch

ref: fca129203ab3f77432577af668db224b142c82c6
parent: 23216211bc27bd90bd4b32a4730e839a4de29559
author: Yaowu Xu <yaowu@google.com>
date: Mon Aug 16 12:16:24 EDT 2010 

added separate rounding/zbin constants for 2nd order

This allows experiments of using different rounding and
zerobin constants for 2nd order blocks.

Change-Id: Idd829adba3edd1f713c66151a8d29bb245e33a71


--- a/vp8/encoder/encodeframe.c
+++ b/vp8/encoder/encodeframe.c
@@ -101,6 +101,49 @@
     80, 80, 80, 80, 80, 80, 80, 80,
     80,
 };
+
+static const int qrounding_factors_y2[129] =
+{
+    56, 56, 56, 56, 48, 48, 56, 56,
+    48, 48, 48, 48, 48, 48, 48, 48,
+    48, 48, 48, 48, 48, 48, 48, 48,
+    48, 48, 48, 48, 48, 48, 48, 48,
+    48, 48, 48, 48, 48, 48, 48, 48,
+    48, 48, 48, 48, 48, 48, 48, 48,
+    48, 48, 48, 48, 48, 48, 48, 48,
+    48, 48, 48, 48, 48, 48, 48, 48,
+    48, 48, 48, 48, 48, 48, 48, 48,
+    48, 48, 48, 48, 48, 48, 48, 48,
+    48, 48, 48, 48, 48, 48, 48, 48,
+    48, 48, 48, 48, 48, 48, 48, 48,
+    48, 48, 48, 48, 48, 48, 48, 48,
+    48, 48, 48, 48, 48, 48, 48, 48,
+    48, 48, 48, 48, 48, 48, 48, 48,
+    48, 48, 48, 48, 48, 48, 48, 48,
+    48,
+};
+
+static const int qzbin_factors_y2[129] =
+{
+    72, 72, 72, 72, 80, 80, 72, 72,
+    80, 80, 80, 80, 80, 80, 80, 80,
+    80, 80, 80, 80, 80, 80, 80, 80,
+    80, 80, 80, 80, 80, 80, 80, 80,
+    80, 80, 80, 80, 80, 80, 80, 80,
+    80, 80, 80, 80, 80, 80, 80, 80,
+    80, 80, 80, 80, 80, 80, 80, 80,
+    80, 80, 80, 80, 80, 80, 80, 80,
+    80, 80, 80, 80, 80, 80, 80, 80,
+    80, 80, 80, 80, 80, 80, 80, 80,
+    80, 80, 80, 80, 80, 80, 80, 80,
+    80, 80, 80, 80, 80, 80, 80, 80,
+    80, 80, 80, 80, 80, 80, 80, 80,
+    80, 80, 80, 80, 80, 80, 80, 80,
+    80, 80, 80, 80, 80, 80, 80, 80,
+    80, 80, 80, 80, 80, 80, 80, 80,
+    80,
+};
+
 //#define EXACT_QUANT
 #ifdef EXACT_QUANT
 static void vp8cx_invert_quant(short *quant, short *shift, short d)
@@ -138,8 +181,8 @@
         quant_val = vp8_dc2quant(Q, cpi->common.y2dc_delta_q);
         vp8cx_invert_quant(cpi->Y2quant[Q][0] + 0,
                            cpi->Y2quant_shift[Q][0] + 0, quant_val);
-        cpi->Y2zbin[Q][0][0] = ((qzbin_factors[Q] * quant_val) + 64) >> 7;
-        cpi->Y2round[Q][0][0] = (qrounding_factors[Q] * quant_val) >> 7;
+        cpi->Y2zbin[Q][0][0] = ((qzbin_factors_y2[Q] * quant_val) + 64) >> 7;
+        cpi->Y2round[Q][0][0] = (qrounding_factors_y2[Q] * quant_val) >> 7;
         cpi->common.Y2dequant[Q][0][0] = quant_val;
         cpi->zrun_zbin_boost_y2[Q][0] = (quant_val * zbin_boost[0]) >> 7;
 
@@ -169,8 +212,8 @@
             quant_val = vp8_ac2quant(Q, cpi->common.y2ac_delta_q);
             vp8cx_invert_quant(cpi->Y2quant[Q][r] + c,
                                cpi->Y2quant_shift[Q][r] + c, quant_val);
-            cpi->Y2zbin[Q][r][c] = ((qzbin_factors[Q] * quant_val) + 64) >> 7;
-            cpi->Y2round[Q][r][c] = (qrounding_factors[Q] * quant_val) >> 7;
+            cpi->Y2zbin[Q][r][c] = ((qzbin_factors_y2[Q] * quant_val) + 64) >> 7;
+            cpi->Y2round[Q][r][c] = (qrounding_factors_y2[Q] * quant_val) >> 7;
             cpi->common.Y2dequant[Q][r][c] = quant_val;
             cpi->zrun_zbin_boost_y2[Q][i] = (quant_val * zbin_boost[i]) >> 7;
 
@@ -206,8 +249,8 @@
 

         quant_val = vp8_dc2quant(Q, cpi->common.y2dc_delta_q);

         cpi->Y2quant[Q][0][0] = (1 << 16) / quant_val;

-        cpi->Y2zbin[Q][0][0] = ((qzbin_factors[Q] * quant_val) + 64) >> 7;

-        cpi->Y2round[Q][0][0] = (qrounding_factors[Q] * quant_val) >> 7;

+        cpi->Y2zbin[Q][0][0] = ((qzbin_factors_y2[Q] * quant_val) + 64) >> 7;

+        cpi->Y2round[Q][0][0] = (qrounding_factors_y2[Q] * quant_val) >> 7;

         cpi->common.Y2dequant[Q][0][0] = quant_val;

         cpi->zrun_zbin_boost_y2[Q][0] = (quant_val * zbin_boost[0]) >> 7;

 

@@ -234,8 +277,8 @@
 

             quant_val = vp8_ac2quant(Q, cpi->common.y2ac_delta_q);

             cpi->Y2quant[Q][r][c] = (1 << 16) / quant_val;

-            cpi->Y2zbin[Q][r][c] = ((qzbin_factors[Q] * quant_val) + 64) >> 7;

-            cpi->Y2round[Q][r][c] = (qrounding_factors[Q] * quant_val) >> 7;

+            cpi->Y2zbin[Q][r][c] = ((qzbin_factors_y2[Q] * quant_val) + 64) >> 7;

+            cpi->Y2round[Q][r][c] = (qrounding_factors_y2[Q] * quant_val) >> 7;

             cpi->common.Y2dequant[Q][r][c] = quant_val;

             cpi->zrun_zbin_boost_y2[Q][i] = (quant_val * zbin_boost[i]) >> 7;