shithub: libvpx

Download patch

ref: aac2c12663dc3b7aec16436612c4d3cd3d589001
parent: ca6b85aa4eae6047315ac01eef44b0ebaef58da3
author: Yaowu Xu <yaowu@google.com>
date: Thu Aug 4 12:30:27 EDT 2011 

add quantizer adaptive intra mb mode encoding

make intra mode coding entropy distribution adaptive to baseQindex, an
encoding test on hd clips with all key frame shows universal gain on
all clips in both .2%(psnr) and (ssim).3%.

To build and test, configure with
--enable-experimental --enable-qimode

Change-Id: Iaa69241b984d4fdd8baa6d77ee78c0140f5ac00a


--- a/configure
+++ b/configure
@@ -222,6 +222,7 @@
     t8x8
     csm
     i8x8
+    qimode
 "
 CONFIG_LIST="
     external_build
--- a/vp8/common/blockd.h
+++ b/vp8/common/blockd.h
@@ -25,6 +25,8 @@
 #define TRUE    1
 #define FALSE   0
 
+#define MODE_STATS
+
 /*#define DCPRED 1*/
 #define DCPREDSIMTHRESH 0
 #define DCPREDCNTTHRESH 3
--- a/vp8/common/entropymode.c
+++ b/vp8/common/entropymode.c
@@ -13,7 +13,22 @@
 #include "entropy.h"
 #include "vpx_mem/vpx_mem.h"
 #if CONFIG_I8X8
+
+#if CONFIG_QIMODE
+static const unsigned int kf_y_mode_cts[8][VP8_YMODES] =
+{
+    {17,  6,  5,  2, 22, 203},
+    {27, 13, 13,  6, 27, 170},
+    {35, 17, 18,  9, 26, 152},
+    {45, 22, 24, 12, 27, 126},
+    {58, 26, 29, 13, 26, 104},
+    {73, 33, 36, 17, 20,  78},
+    {88, 38, 39, 19, 16,  57},
+    {99, 42, 43, 21, 12,  39},
+};
+#else
 static const unsigned int kf_y_mode_cts[VP8_YMODES] = { 49, 22, 23, 11, 23, 128};
+#endif
 static const unsigned int y_mode_cts  [VP8_YMODES] = { 8080, 1908, 1582, 1007, 0, 5874};
 #else
 static const unsigned int kf_y_mode_cts[VP8_YMODES] = { 1607, 915, 812, 811, 5455};
@@ -222,11 +237,23 @@
         x->fc.ymode_prob, bct, y_mode_cts,
         256, 1
     );
+#if CONFIG_QIMODE
+    {
+        int i;
+        for (i=0;i<8;i++)
+        vp8_tree_probs_from_distribution(
+            VP8_YMODES, vp8_kf_ymode_encodings, vp8_kf_ymode_tree,
+            x->kf_ymode_prob[i], bct, kf_y_mode_cts[i],
+            256, 1
+            );
+    }
+#else
     vp8_tree_probs_from_distribution(
         VP8_YMODES, vp8_kf_ymode_encodings, vp8_kf_ymode_tree,
         x->kf_ymode_prob, bct, kf_y_mode_cts,
         256, 1
     );
+#endif
     vp8_tree_probs_from_distribution(
         VP8_UV_MODES, vp8_uv_mode_encodings, vp8_uv_mode_tree,
         x->fc.uv_mode_prob, bct, uv_mode_cts,
--- a/vp8/common/onyxc_int.h
+++ b/vp8/common/onyxc_int.h
@@ -183,7 +183,11 @@
     /* keyframe block modes are predicted by their above, left neighbors */
 
     vp8_prob kf_bmode_prob [VP8_BINTRAMODES] [VP8_BINTRAMODES] [VP8_BINTRAMODES-1];
+#if CONFIG_QIMODE
+    vp8_prob kf_ymode_prob[8][VP8_YMODES-1];  /* keyframe "" */
+#else
     vp8_prob kf_ymode_prob [VP8_YMODES-1];  /* keyframe "" */
+#endif
     vp8_prob kf_uv_mode_prob [VP8_UV_MODES-1];
 #if CONFIG_I8X8
     vp8_prob i8x8_mode_prob [VP8_UV_MODES-1];
--- a/vp8/decoder/decodemv.c
+++ b/vp8/decoder/decodemv.c
@@ -90,9 +90,12 @@
                 m->mbmi.mb_skip_coeff = vp8_read(bc, pbi->prob_skip_false);
             else
                 m->mbmi.mb_skip_coeff = 0;
-
+#if CONFIG_QIMODE
+            y_mode = (MB_PREDICTION_MODE) vp8_kfread_ymode(bc,
+                pbi->common.kf_ymode_prob[pbi->common.base_qindex>>4]);
+#else
             y_mode = (MB_PREDICTION_MODE) vp8_kfread_ymode(bc, pbi->common.kf_ymode_prob);
-
+#endif
             m->mbmi.ref_frame = INTRA_FRAME;
 
             if ((m->mbmi.mode = y_mode) == B_PRED)
@@ -124,6 +127,7 @@
                  }
                 //printf("%2d%2d%2d%2d\n", m->bmi[0].as_mode,m->bmi[2].as_mode,
                 //                       m->bmi[8].as_mode,m->bmi[10].as_mode);
+                                         */
            }
             else
 #endif
--- a/vp8/encoder/bitstream.c
+++ b/vp8/encoder/bitstream.c
@@ -1192,8 +1192,11 @@
 
             if (c->mb_no_coeff_skip)
                 vp8_encode_bool(bc, m->mbmi.mb_skip_coeff, prob_skip_false);
-
+#if CONFIG_QIMODE
+            kfwrite_ymode(bc, ym, c->kf_ymode_prob[c->base_qindex>>4]);
+#else
             kfwrite_ymode(bc, ym, c->kf_ymode_prob);
+#endif
             if (ym == B_PRED)
             {
                 const int mis = c->mode_info_stride;
--- a/vp8/encoder/modecosts.c
+++ b/vp8/encoder/modecosts.c
@@ -40,8 +40,11 @@
     vp8_cost_tokens((int *)c->mb.inter_bmode_costs, x->fc.sub_mv_ref_prob, vp8_sub_mv_ref_tree);
 
     vp8_cost_tokens(c->mb.mbmode_cost[1], x->fc.ymode_prob, vp8_ymode_tree);
+#if CONFIG_QIMODE
+    vp8_cost_tokens(c->mb.mbmode_cost[0], x->kf_ymode_prob[c->common.base_qindex>>4], vp8_kf_ymode_tree);
+#else
     vp8_cost_tokens(c->mb.mbmode_cost[0], x->kf_ymode_prob, vp8_kf_ymode_tree);
-
+#endif
     vp8_cost_tokens(c->mb.intra_uv_mode_cost[1], x->fc.uv_mode_prob, vp8_uv_mode_tree);
     vp8_cost_tokens(c->mb.intra_uv_mode_cost[0], x->kf_uv_mode_prob, vp8_uv_mode_tree);
 #if CONFIG_I8X8
--- a/vp8/encoder/onyx_int.h
+++ b/vp8/encoder/onyx_int.h
@@ -81,7 +81,11 @@
     /* interframe intra mode probs */
     vp8_prob ymode_prob[VP8_YMODES-1], uv_mode_prob[VP8_UV_MODES-1];
     /* keyframe intra mode probs */
+#if CONFIG_QIMODE
+    vp8_prob kf_ymode_prob[8][VP8_YMODES-1], kf_uv_mode_prob[VP8_UV_MODES-1];
+#else
     vp8_prob kf_ymode_prob[VP8_YMODES-1], kf_uv_mode_prob[VP8_UV_MODES-1];
+#endif
     /* intra MB type cts this frame */
     int ymode_count[VP8_YMODES], uv_mode_count[VP8_UV_MODES];
 
--- a/vp8/encoder/ratectrl.c
+++ b/vp8/encoder/ratectrl.c
@@ -321,7 +321,6 @@
     vp8_copy(cpi->common.fc.mvc, cc->mvc);
 
     vp8_copy(cpi->mb.mvcosts, cc->mvcosts);
-
     vp8_copy(cpi->common.kf_ymode_prob,   cc->kf_ymode_prob);
     vp8_copy(cpi->common.fc.ymode_prob,   cc->ymode_prob);
     vp8_copy(cpi->common.kf_uv_mode_prob,  cc->kf_uv_mode_prob);
-- 
⑨