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Unified Diff: third_party/libwebp/tree.c

Issue 3614010: Add WebP library to Chromium... (Closed) Base URL: svn://chrome-svn/chrome/trunk/src/
Patch Set: '' Created 10 years, 2 months ago
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Index: third_party/libwebp/tree.c
===================================================================
--- third_party/libwebp/tree.c (revision 0)
+++ third_party/libwebp/tree.c (revision 0)
@@ -0,0 +1,579 @@
+// Copyright 2010 Google Inc.
+//
+// This code is licensed under the same terms as WebM:
+// Software License Agreement: http://www.webmproject.org/license/software/
+// Additional IP Rights Grant: http://www.webmproject.org/license/additional/
+// -----------------------------------------------------------------------------
+//
+// Coding trees and probas
+//
+// Author: Skal (pascal.massimino@gmail.com)
+
+#include <stdio.h>
+#include "vp8i.h"
+#define USE_GENERIC_TREE
+
+#if defined(__cplusplus) || defined(c_plusplus)
+extern "C" {
+#endif
+
+#ifdef USE_GENERIC_TREE
+static const int8_t kYModesIntra4[18] = {
+ -B_DC_PRED, 1,
+ -B_TM_PRED, 2,
+ -B_VE_PRED, 3,
+ 4, 6,
+ -B_HE_PRED, 5,
+ -B_RD_PRED, -B_VR_PRED,
+ -B_LD_PRED, 7,
+ -B_VL_PRED, 8,
+ -B_HD_PRED, -B_HU_PRED
+};
+#endif
+
+#ifndef ONLY_KEYFRAME_CODE
+static const int8_t kYModesInter[8] = {
+ -DC_PRED, 1,
+ 2, 3,
+ -V_PRED, -H_PRED,
+ -TM_PRED, -B_PRED
+};
+
+static const int8_t kMBSplit[6] = {
+ -3, 1,
+ -2, 2,
+ -0, -1
+};
+
+static const int8_t kMVRef[8] = {
+ -ZEROMV, 1,
+ -NEARESTMV, 2,
+ -NEARMV, 3,
+ -NEWMV, -SPLITMV
+};
+
+static const int8_t kMVRef4[6] = {
+ -LEFT4, 1
+ -ABOVE4, 2
+ -ZERO4, -NEW4
+};
+#endif
+
+//-----------------------------------------------------------------------------
+// Default probabilities
+
+// Inter
+#ifndef ONLY_KEYFRAME_CODE
+static const uint8_t kYModeProbaInter0[4] = { 112, 86, 140, 37 };
+static const uint8_t kUVModeProbaInter0[3] = { 162, 101, 204 };
+static const uint8_t kMVProba0[2][NUM_MV_PROBAS] = {
+ { 162, 128, 225, 146, 172, 147, 214, 39,
+ 156, 128, 129, 132, 75, 145, 178, 206,
+ 239, 254, 254 },
+ { 164, 128, 204, 170, 119, 235, 140, 230,
+ 228, 128, 130, 130, 74, 148, 180, 203,
+ 236, 254, 254 }
+};
+#endif
+
+// Paragraph 13.5
+static const uint8_t
+ CoeffsProba0[NUM_TYPES][NUM_BANDS][NUM_CTX][NUM_PROBAS] = {
+ // genereated using vp8_default_coef_probs() in entropy.c:129
+ { { { 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 },
+ { 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 },
+ { 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 }
+ },
+ { { 253, 136, 254, 255, 228, 219, 128, 128, 128, 128, 128 },
+ { 189, 129, 242, 255, 227, 213, 255, 219, 128, 128, 128 },
+ { 106, 126, 227, 252, 214, 209, 255, 255, 128, 128, 128 }
+ },
+ { { 1, 98, 248, 255, 236, 226, 255, 255, 128, 128, 128 },
+ { 181, 133, 238, 254, 221, 234, 255, 154, 128, 128, 128 },
+ { 78, 134, 202, 247, 198, 180, 255, 219, 128, 128, 128 },
+ },
+ { { 1, 185, 249, 255, 243, 255, 128, 128, 128, 128, 128 },
+ { 184, 150, 247, 255, 236, 224, 128, 128, 128, 128, 128 },
+ { 77, 110, 216, 255, 236, 230, 128, 128, 128, 128, 128 },
+ },
+ { { 1, 101, 251, 255, 241, 255, 128, 128, 128, 128, 128 },
+ { 170, 139, 241, 252, 236, 209, 255, 255, 128, 128, 128 },
+ { 37, 116, 196, 243, 228, 255, 255, 255, 128, 128, 128 }
+ },
+ { { 1, 204, 254, 255, 245, 255, 128, 128, 128, 128, 128 },
+ { 207, 160, 250, 255, 238, 128, 128, 128, 128, 128, 128 },
+ { 102, 103, 231, 255, 211, 171, 128, 128, 128, 128, 128 }
+ },
+ { { 1, 152, 252, 255, 240, 255, 128, 128, 128, 128, 128 },
+ { 177, 135, 243, 255, 234, 225, 128, 128, 128, 128, 128 },
+ { 80, 129, 211, 255, 194, 224, 128, 128, 128, 128, 128 }
+ },
+ { { 1, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128 },
+ { 246, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128 },
+ { 255, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 }
+ }
+ },
+ { { { 198, 35, 237, 223, 193, 187, 162, 160, 145, 155, 62 },
+ { 131, 45, 198, 221, 172, 176, 220, 157, 252, 221, 1 },
+ { 68, 47, 146, 208, 149, 167, 221, 162, 255, 223, 128 }
+ },
+ { { 1, 149, 241, 255, 221, 224, 255, 255, 128, 128, 128 },
+ { 184, 141, 234, 253, 222, 220, 255, 199, 128, 128, 128 },
+ { 81, 99, 181, 242, 176, 190, 249, 202, 255, 255, 128 }
+ },
+ { { 1, 129, 232, 253, 214, 197, 242, 196, 255, 255, 128 },
+ { 99, 121, 210, 250, 201, 198, 255, 202, 128, 128, 128 },
+ { 23, 91, 163, 242, 170, 187, 247, 210, 255, 255, 128 }
+ },
+ { { 1, 200, 246, 255, 234, 255, 128, 128, 128, 128, 128 },
+ { 109, 178, 241, 255, 231, 245, 255, 255, 128, 128, 128 },
+ { 44, 130, 201, 253, 205, 192, 255, 255, 128, 128, 128 }
+ },
+ { { 1, 132, 239, 251, 219, 209, 255, 165, 128, 128, 128 },
+ { 94, 136, 225, 251, 218, 190, 255, 255, 128, 128, 128 },
+ { 22, 100, 174, 245, 186, 161, 255, 199, 128, 128, 128 }
+ },
+ { { 1, 182, 249, 255, 232, 235, 128, 128, 128, 128, 128 },
+ { 124, 143, 241, 255, 227, 234, 128, 128, 128, 128, 128 },
+ { 35, 77, 181, 251, 193, 211, 255, 205, 128, 128, 128 }
+ },
+ { { 1, 157, 247, 255, 236, 231, 255, 255, 128, 128, 128 },
+ { 121, 141, 235, 255, 225, 227, 255, 255, 128, 128, 128 },
+ { 45, 99, 188, 251, 195, 217, 255, 224, 128, 128, 128 }
+ },
+ { { 1, 1, 251, 255, 213, 255, 128, 128, 128, 128, 128 },
+ { 203, 1, 248, 255, 255, 128, 128, 128, 128, 128, 128 },
+ { 137, 1, 177, 255, 224, 255, 128, 128, 128, 128, 128 }
+ }
+ },
+ { { { 253, 9, 248, 251, 207, 208, 255, 192, 128, 128, 128 },
+ { 175, 13, 224, 243, 193, 185, 249, 198, 255, 255, 128 },
+ { 73, 17, 171, 221, 161, 179, 236, 167, 255, 234, 128 }
+ },
+ { { 1, 95, 247, 253, 212, 183, 255, 255, 128, 128, 128 },
+ { 239, 90, 244, 250, 211, 209, 255, 255, 128, 128, 128 },
+ { 155, 77, 195, 248, 188, 195, 255, 255, 128, 128, 128 }
+ },
+ { { 1, 24, 239, 251, 218, 219, 255, 205, 128, 128, 128 },
+ { 201, 51, 219, 255, 196, 186, 128, 128, 128, 128, 128 },
+ { 69, 46, 190, 239, 201, 218, 255, 228, 128, 128, 128 }
+ },
+ { { 1, 191, 251, 255, 255, 128, 128, 128, 128, 128, 128 },
+ { 223, 165, 249, 255, 213, 255, 128, 128, 128, 128, 128 },
+ { 141, 124, 248, 255, 255, 128, 128, 128, 128, 128, 128 }
+ },
+ { { 1, 16, 248, 255, 255, 128, 128, 128, 128, 128, 128 },
+ { 190, 36, 230, 255, 236, 255, 128, 128, 128, 128, 128 },
+ { 149, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128 }
+ },
+ { { 1, 226, 255, 128, 128, 128, 128, 128, 128, 128, 128 },
+ { 247, 192, 255, 128, 128, 128, 128, 128, 128, 128, 128 },
+ { 240, 128, 255, 128, 128, 128, 128, 128, 128, 128, 128 }
+ },
+ { { 1, 134, 252, 255, 255, 128, 128, 128, 128, 128, 128 },
+ { 213, 62, 250, 255, 255, 128, 128, 128, 128, 128, 128 },
+ { 55, 93, 255, 128, 128, 128, 128, 128, 128, 128, 128 }
+ },
+ { { 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 },
+ { 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 },
+ { 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 }
+ }
+ },
+ { { { 202, 24, 213, 235, 186, 191, 220, 160, 240, 175, 255 },
+ { 126, 38, 182, 232, 169, 184, 228, 174, 255, 187, 128 },
+ { 61, 46, 138, 219, 151, 178, 240, 170, 255, 216, 128 }
+ },
+ { { 1, 112, 230, 250, 199, 191, 247, 159, 255, 255, 128 },
+ { 166, 109, 228, 252, 211, 215, 255, 174, 128, 128, 128 },
+ { 39, 77, 162, 232, 172, 180, 245, 178, 255, 255, 128 }
+ },
+ { { 1, 52, 220, 246, 198, 199, 249, 220, 255, 255, 128 },
+ { 124, 74, 191, 243, 183, 193, 250, 221, 255, 255, 128 },
+ { 24, 71, 130, 219, 154, 170, 243, 182, 255, 255, 128 }
+ },
+ { { 1, 182, 225, 249, 219, 240, 255, 224, 128, 128, 128 },
+ { 149, 150, 226, 252, 216, 205, 255, 171, 128, 128, 128 },
+ { 28, 108, 170, 242, 183, 194, 254, 223, 255, 255, 128 }
+ },
+ { { 1, 81, 230, 252, 204, 203, 255, 192, 128, 128, 128 },
+ { 123, 102, 209, 247, 188, 196, 255, 233, 128, 128, 128 },
+ { 20, 95, 153, 243, 164, 173, 255, 203, 128, 128, 128 }
+ },
+ { { 1, 222, 248, 255, 216, 213, 128, 128, 128, 128, 128 },
+ { 168, 175, 246, 252, 235, 205, 255, 255, 128, 128, 128 },
+ { 47, 116, 215, 255, 211, 212, 255, 255, 128, 128, 128 }
+ },
+ { { 1, 121, 236, 253, 212, 214, 255, 255, 128, 128, 128 },
+ { 141, 84, 213, 252, 201, 202, 255, 219, 128, 128, 128 },
+ { 42, 80, 160, 240, 162, 185, 255, 205, 128, 128, 128 }
+ },
+ { { 1, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128 },
+ { 244, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128 },
+ { 238, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128 }
+ }
+ }
+};
+
+// Paragraph 11.5
+static const uint8_t kBModesProba[NUM_BMODES][NUM_BMODES][NUM_BMODES - 1] = {
+ // genereated using vp8_kf_default_bmode_probs()
+ { { 231, 120, 48, 89, 115, 113, 120, 152, 112 },
+ { 152, 179, 64, 126, 170, 118, 46, 70, 95 },
+ { 175, 69, 143, 80, 85, 82, 72, 155, 103 },
+ { 56, 58, 10, 171, 218, 189, 17, 13, 152 },
+ { 144, 71, 10, 38, 171, 213, 144, 34, 26 },
+ { 114, 26, 17, 163, 44, 195, 21, 10, 173 },
+ { 121, 24, 80, 195, 26, 62, 44, 64, 85 },
+ { 170, 46, 55, 19, 136, 160, 33, 206, 71 },
+ { 63, 20, 8, 114, 114, 208, 12, 9, 226 },
+ { 81, 40, 11, 96, 182, 84, 29, 16, 36 } },
+ { { 134, 183, 89, 137, 98, 101, 106, 165, 148 },
+ { 72, 187, 100, 130, 157, 111, 32, 75, 80 },
+ { 66, 102, 167, 99, 74, 62, 40, 234, 128 },
+ { 41, 53, 9, 178, 241, 141, 26, 8, 107 },
+ { 104, 79, 12, 27, 217, 255, 87, 17, 7 },
+ { 74, 43, 26, 146, 73, 166, 49, 23, 157 },
+ { 65, 38, 105, 160, 51, 52, 31, 115, 128 },
+ { 87, 68, 71, 44, 114, 51, 15, 186, 23 },
+ { 47, 41, 14, 110, 182, 183, 21, 17, 194 },
+ { 66, 45, 25, 102, 197, 189, 23, 18, 22 } },
+ { { 88, 88, 147, 150, 42, 46, 45, 196, 205 },
+ { 43, 97, 183, 117, 85, 38, 35, 179, 61 },
+ { 39, 53, 200, 87, 26, 21, 43, 232, 171 },
+ { 56, 34, 51, 104, 114, 102, 29, 93, 77 },
+ { 107, 54, 32, 26, 51, 1, 81, 43, 31 },
+ { 39, 28, 85, 171, 58, 165, 90, 98, 64 },
+ { 34, 22, 116, 206, 23, 34, 43, 166, 73 },
+ { 68, 25, 106, 22, 64, 171, 36, 225, 114 },
+ { 34, 19, 21, 102, 132, 188, 16, 76, 124 },
+ { 62, 18, 78, 95, 85, 57, 50, 48, 51 } },
+ { { 193, 101, 35, 159, 215, 111, 89, 46, 111 },
+ { 60, 148, 31, 172, 219, 228, 21, 18, 111 },
+ { 112, 113, 77, 85, 179, 255, 38, 120, 114 },
+ { 40, 42, 1, 196, 245, 209, 10, 25, 109 },
+ { 100, 80, 8, 43, 154, 1, 51, 26, 71 },
+ { 88, 43, 29, 140, 166, 213, 37, 43, 154 },
+ { 61, 63, 30, 155, 67, 45, 68, 1, 209 },
+ { 142, 78, 78, 16, 255, 128, 34, 197, 171 },
+ { 41, 40, 5, 102, 211, 183, 4, 1, 221 },
+ { 51, 50, 17, 168, 209, 192, 23, 25, 82 } },
+ { { 125, 98, 42, 88, 104, 85, 117, 175, 82 },
+ { 95, 84, 53, 89, 128, 100, 113, 101, 45 },
+ { 75, 79, 123, 47, 51, 128, 81, 171, 1 },
+ { 57, 17, 5, 71, 102, 57, 53, 41, 49 },
+ { 115, 21, 2, 10, 102, 255, 166, 23, 6 },
+ { 38, 33, 13, 121, 57, 73, 26, 1, 85 },
+ { 41, 10, 67, 138, 77, 110, 90, 47, 114 },
+ { 101, 29, 16, 10, 85, 128, 101, 196, 26 },
+ { 57, 18, 10, 102, 102, 213, 34, 20, 43 },
+ { 117, 20, 15, 36, 163, 128, 68, 1, 26 } },
+ { { 138, 31, 36, 171, 27, 166, 38, 44, 229 },
+ { 67, 87, 58, 169, 82, 115, 26, 59, 179 },
+ { 63, 59, 90, 180, 59, 166, 93, 73, 154 },
+ { 40, 40, 21, 116, 143, 209, 34, 39, 175 },
+ { 57, 46, 22, 24, 128, 1, 54, 17, 37 },
+ { 47, 15, 16, 183, 34, 223, 49, 45, 183 },
+ { 46, 17, 33, 183, 6, 98, 15, 32, 183 },
+ { 65, 32, 73, 115, 28, 128, 23, 128, 205 },
+ { 40, 3, 9, 115, 51, 192, 18, 6, 223 },
+ { 87, 37, 9, 115, 59, 77, 64, 21, 47 } },
+ { { 104, 55, 44, 218, 9, 54, 53, 130, 226 },
+ { 64, 90, 70, 205, 40, 41, 23, 26, 57 },
+ { 54, 57, 112, 184, 5, 41, 38, 166, 213 },
+ { 30, 34, 26, 133, 152, 116, 10, 32, 134 },
+ { 75, 32, 12, 51, 192, 255, 160, 43, 51 },
+ { 39, 19, 53, 221, 26, 114, 32, 73, 255 },
+ { 31, 9, 65, 234, 2, 15, 1, 118, 73 },
+ { 88, 31, 35, 67, 102, 85, 55, 186, 85 },
+ { 56, 21, 23, 111, 59, 205, 45, 37, 192 },
+ { 55, 38, 70, 124, 73, 102, 1, 34, 98 } },
+ { { 102, 61, 71, 37, 34, 53, 31, 243, 192 },
+ { 69, 60, 71, 38, 73, 119, 28, 222, 37 },
+ { 68, 45, 128, 34, 1, 47, 11, 245, 171 },
+ { 62, 17, 19, 70, 146, 85, 55, 62, 70 },
+ { 75, 15, 9, 9, 64, 255, 184, 119, 16 },
+ { 37, 43, 37, 154, 100, 163, 85, 160, 1 },
+ { 63, 9, 92, 136, 28, 64, 32, 201, 85 },
+ { 86, 6, 28, 5, 64, 255, 25, 248, 1 },
+ { 56, 8, 17, 132, 137, 255, 55, 116, 128 },
+ { 58, 15, 20, 82, 135, 57, 26, 121, 40 } },
+ { { 164, 50, 31, 137, 154, 133, 25, 35, 218 },
+ { 51, 103, 44, 131, 131, 123, 31, 6, 158 },
+ { 86, 40, 64, 135, 148, 224, 45, 183, 128 },
+ { 22, 26, 17, 131, 240, 154, 14, 1, 209 },
+ { 83, 12, 13, 54, 192, 255, 68, 47, 28 },
+ { 45, 16, 21, 91, 64, 222, 7, 1, 197 },
+ { 56, 21, 39, 155, 60, 138, 23, 102, 213 },
+ { 85, 26, 85, 85, 128, 128, 32, 146, 171 },
+ { 18, 11, 7, 63, 144, 171, 4, 4, 246 },
+ { 35, 27, 10, 146, 174, 171, 12, 26, 128 } },
+ { { 190, 80, 35, 99, 180, 80, 126, 54, 45 },
+ { 85, 126, 47, 87, 176, 51, 41, 20, 32 },
+ { 101, 75, 128, 139, 118, 146, 116, 128, 85 },
+ { 56, 41, 15, 176, 236, 85, 37, 9, 62 },
+ { 146, 36, 19, 30, 171, 255, 97, 27, 20 },
+ { 71, 30, 17, 119, 118, 255, 17, 18, 138 },
+ { 101, 38, 60, 138, 55, 70, 43, 26, 142 },
+ { 138, 45, 61, 62, 219, 1, 81, 188, 64 },
+ { 32, 41, 20, 117, 151, 142, 20, 21, 163 },
+ { 112, 19, 12, 61, 195, 128, 48, 4, 24 } }
+};
+
+void VP8ResetProba(VP8Proba* const proba) {
+ memset(proba->segments_, 255u, sizeof(proba->segments_));
+ memcpy(proba->coeffs_, CoeffsProba0, sizeof(CoeffsProba0));
+#ifndef ONLY_KEYFRAME_CODE
+ memcpy(proba->mv_, kMVProba0, sizeof(kMVProba0));
+ memcpy(proba->ymode_, kYModeProbaInter0, sizeof(kYModeProbaInter0));
+ memcpy(proba->uvmode_, kUVModeProbaInter0, sizeof(kYModeProbaInter0));
+#endif
+}
+
+void VP8ParseIntraMode(VP8BitReader* const br, VP8Decoder* const dec) {
+ uint8_t* const top = dec->intra_t_ + 4 * dec->mb_x_;
+ uint8_t* const left = dec->intra_l_;
+ // Hardcoded 16x16 intra-mode decision tree.
+ dec->is_i4x4_ = !VP8GetBit(br, 145); // decide for B_PRED first
+ if (!dec->is_i4x4_) {
+ const int ymode =
+ VP8GetBit(br, 156) ? (VP8GetBit(br, 128) ? TM_PRED : H_PRED)
+ : (VP8GetBit(br, 163) ? V_PRED : DC_PRED);
+ dec->imodes_[0] = ymode;
+ memset(top, ymode, 4 * sizeof(top[0]));
+ memset(left, ymode, 4 * sizeof(left[0]));
+ } else {
+ uint8_t* modes = dec->imodes_;
+ for (int y = 0; y < 4; ++y) {
+ int ymode = left[y];
+ for (int x = 0; x < 4; ++x) {
+ const uint8_t* const prob = kBModesProba[top[x]][ymode];
+#ifdef USE_GENERIC_TREE
+ // Generic tree-parsing
+ int i = 0;
+ do {
+ i = kYModesIntra4[2 * i + VP8GetBit(br, prob[i])];
+ } while (i > 0);
+ ymode = -i;
+#else
+ // Hardcoded tree parsing
+ ymode = !VP8GetBit(br, prob[0]) ? B_DC_PRED :
+ !VP8GetBit(br, prob[1]) ? B_TM_PRED :
+ !VP8GetBit(br, prob[2]) ? B_VE_PRED :
+ !VP8GetBit(br, prob[3]) ?
+ (!VP8GetBit(br, prob[4]) ? B_HE_PRED :
+ (!VP8GetBit(br, prob[5]) ? B_RD_PRED : B_VR_PRED)) :
+ (!VP8GetBit(br, prob[6]) ? B_LD_PRED :
+ (!VP8GetBit(br, prob[7]) ? B_VL_PRED :
+ (!VP8GetBit(br, prob[8]) ? B_HD_PRED : B_HU_PRED)));
+#endif // USE_GENERIC_TREE
+ top[x] = ymode;
+ *modes++ = ymode;
+ }
+ left[y] = ymode;
+ }
+ }
+ // Hardcoded UVMode decision tree
+ dec->uvmode_ = !VP8GetBit(br, 142) ? DC_PRED
+ : !VP8GetBit(br, 114) ? V_PRED
+ : VP8GetBit(br, 183) ? TM_PRED : H_PRED;
+}
+
+//-----------------------------------------------------------------------------
+// Paragraph 13
+
+static const uint8_t
+ CoeffsUpdateProba[NUM_TYPES][NUM_BANDS][NUM_CTX][NUM_PROBAS] = {
+ { { { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
+ },
+ { { 176, 246, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 223, 241, 252, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 249, 253, 253, 255, 255, 255, 255, 255, 255, 255, 255 }
+ },
+ { { 255, 244, 252, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 234, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 253, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
+ },
+ { { 255, 246, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 239, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 254, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255 }
+ },
+ { { 255, 248, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 251, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
+ },
+ { { 255, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 251, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 254, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255 }
+ },
+ { { 255, 254, 253, 255, 254, 255, 255, 255, 255, 255, 255 },
+ { 250, 255, 254, 255, 254, 255, 255, 255, 255, 255, 255 },
+ { 254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
+ },
+ { { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
+ }
+ },
+ { { { 217, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 225, 252, 241, 253, 255, 255, 254, 255, 255, 255, 255 },
+ { 234, 250, 241, 250, 253, 255, 253, 254, 255, 255, 255 }
+ },
+ { { 255, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 223, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 238, 253, 254, 254, 255, 255, 255, 255, 255, 255, 255 }
+ },
+ { { 255, 248, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 249, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
+ },
+ { { 255, 253, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 247, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
+ },
+ { { 255, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 252, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
+ },
+ { { 255, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 253, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
+ },
+ { { 255, 254, 253, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 250, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
+ },
+ { { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
+ }
+ },
+ { { { 186, 251, 250, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 234, 251, 244, 254, 255, 255, 255, 255, 255, 255, 255 },
+ { 251, 251, 243, 253, 254, 255, 254, 255, 255, 255, 255 }
+ },
+ { { 255, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 236, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 251, 253, 253, 254, 254, 255, 255, 255, 255, 255, 255 }
+ },
+ { { 255, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 254, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
+ },
+ { { 255, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 254, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
+ },
+ { { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
+ },
+ { { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
+ },
+ { { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
+ },
+ { { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
+ }
+ },
+ { { { 248, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 250, 254, 252, 254, 255, 255, 255, 255, 255, 255, 255 },
+ { 248, 254, 249, 253, 255, 255, 255, 255, 255, 255, 255 }
+ },
+ { { 255, 253, 253, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 246, 253, 253, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 252, 254, 251, 254, 254, 255, 255, 255, 255, 255, 255 }
+ },
+ { { 255, 254, 252, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 248, 254, 253, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 253, 255, 254, 254, 255, 255, 255, 255, 255, 255, 255 }
+ },
+ { { 255, 251, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 245, 251, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 253, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 }
+ },
+ { { 255, 251, 253, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 252, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 255, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
+ },
+ { { 255, 252, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 249, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 255, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255 }
+ },
+ { { 255, 255, 253, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 250, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
+ },
+ { { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
+ { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
+ }
+ }
+};
+
+#ifndef ONLY_KEYFRAME_CODE
+static const uint8_t MVUpdateProba[2][NUM_MV_PROBAS] = {
+ { 237, 246, 253, 253, 254, 254, 254, 254,
+ 254, 254, 254, 254, 254, 254, 250, 250,
+ 252, 254, 254 },
+ { 231, 243, 245, 253, 254, 254, 254, 254,
+ 254, 254, 254, 254, 254, 254, 251, 251,
+ 254, 254, 254 }
+};
+#endif
+
+// Paragraph 9.9
+void VP8ParseProba(VP8BitReader* const br, VP8Decoder* const dec) {
+ VP8Proba* const proba = &dec->proba_;
+ for (int t = 0; t < NUM_TYPES; ++t) {
+ for (int b = 0; b < NUM_BANDS; ++b) {
+ for (int c = 0; c < NUM_CTX; ++c) {
+ for (int p = 0; p < NUM_PROBAS; ++p) {
+ if (VP8GetBit(br, CoeffsUpdateProba[t][b][c][p])) {
+ proba->coeffs_[t][b][c][p] = VP8GetValue(br, 8);
+ }
+ }
+ }
+ }
+ }
+ dec->use_skip_proba_ = VP8Get(br);
+ if (dec->use_skip_proba_) {
+ dec->skip_p_ = VP8GetValue(br, 8);
+ }
+#ifndef ONLY_KEYFRAME_CODE
+ if (!dec->frm_hdr_.key_frame_) {
+ dec->intra_p_ = VP8GetValue(br, 8);
+ dec->last_p_ = VP8GetValue(br, 8);
+ dec->golden_p_ = VP8GetValue(br, 8);
+ if (VP8Get(br)) { // update y-mode
+ for (int i = 0; i < 4; ++i) {
+ proba->ymode_[i] = VP8GetValue(br, 8);
+ }
+ }
+ if (VP8Get(br)) { // update uv-mode
+ for (int i = 0; i < 3; ++i) {
+ proba->uvmode_[i] = VP8GetValue(br, 8);
+ }
+ }
+ // update MV
+ for (int d = 0; d < 2; ++d) {
+ for (int k = 0; k < NUM_MV_PROBAS; ++k) {
+ if (VP8GetBit(br, MVUpdateProba[d][k])) {
+ const int v = VP8GetValue(br, 7);
+ proba->mv_[d][k] = v ? v << 1 : 1;
+ }
+ }
+ }
+ }
+#endif
+}
+
+#if defined(__cplusplus) || defined(c_plusplus)
+} // extern "C"
+#endif
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