vp8i_enc.h revision 7c970a0a679089e416c5887cf7fcece15a70bfa4
17c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// Copyright 2011 Google Inc. 27c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// 37c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// This code is licensed under the same terms as WebM: 47c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// Software License Agreement: http://www.webmproject.org/license/software/ 57c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// Additional IP Rights Grant: http://www.webmproject.org/license/additional/ 67c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// ----------------------------------------------------------------------------- 77c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// 87c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// WebP encoder: internal header. 97c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// 107c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// Author: Skal (pascal.massimino@gmail.com) 117c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 127c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#ifndef WEBP_ENC_VP8ENCI_H_ 137c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define WEBP_ENC_VP8ENCI_H_ 147c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 157c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#include "string.h" // for memcpy() 167c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#include "webp/encode.h" 177c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#include "bit_writer.h" 187c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 197c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#if defined(__cplusplus) || defined(c_plusplus) 207c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroraextern "C" { 217c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#endif 227c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 237c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora//----------------------------------------------------------------------------- 247c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// Various defines and enums 257c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 267c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// version numbers 277c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define ENC_MAJ_VERSION 0 287c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define ENC_MIN_VERSION 1 297c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define ENC_REV_VERSION 2 307c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 317c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// intra prediction modes 327c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroraenum { B_DC_PRED = 0, // 4x4 modes 337c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora B_TM_PRED = 1, 347c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora B_VE_PRED = 2, 357c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora B_HE_PRED = 3, 367c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora B_RD_PRED = 4, 377c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora B_VR_PRED = 5, 387c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora B_LD_PRED = 6, 397c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora B_VL_PRED = 7, 407c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora B_HD_PRED = 8, 417c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora B_HU_PRED = 9, 427c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora NUM_BMODES = B_HU_PRED + 1 - B_DC_PRED, // = 10 437c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 447c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora // Luma16 or UV modes 457c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora DC_PRED = B_DC_PRED, V_PRED = B_VE_PRED, 467c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora H_PRED = B_HE_PRED, TM_PRED = B_TM_PRED 477c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora }; 487c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 497c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroraenum { NUM_MB_SEGMENTS = 4, 507c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora MAX_NUM_PARTITIONS = 8, 517c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora NUM_TYPES = 4, // 0: i16-AC, 1: i16-DC, 2:chroma-AC, 3:i4-AC 527c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora NUM_BANDS = 8, 537c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora NUM_CTX = 3, 547c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora NUM_PROBAS = 11, 557c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora MAX_LF_LEVELS = 64, // Maximum loop filter level 567c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora MAX_VARIABLE_LEVEL = 67 // last (inclusive) level with variable cost 577c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora }; 587c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 597c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// YUV-cache parameters. Cache is 16-pixels wide. 607c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// The original or reconstructed samples can be accessed using VP8Scan[] 617c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// The predicted blocks can be accessed using offsets to yuv_p_ and 627c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// the arrays VP8*ModeOffsets[]; 637c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// +----+ YUV Samples area. See VP8Scan[] for accessing the blocks. 647c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// Y_OFF |YYYY| <- original samples (enc->yuv_in_) 657c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// |YYYY| 667c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// |YYYY| 677c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// |YYYY| 687c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// U_OFF |UUVV| V_OFF (=U_OFF + 8) 697c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// |UUVV| 707c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// +----+ 717c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// Y_OFF |YYYY| <- compressed/decoded samples ('yuv_out_') 727c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// |YYYY| There are two buffers like this ('yuv_out_'/'yuv_out2_') 737c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// |YYYY| 747c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// |YYYY| 757c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// U_OFF |UUVV| V_OFF 767c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// |UUVV| 777c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// x2 (for yuv_out2_) 787c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// +----+ Prediction area ('yuv_p_', size = PRED_SIZE) 797c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// I16DC16 |YYYY| Intra16 predictions (16x16 block each) 807c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// |YYYY| 817c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// |YYYY| 827c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// |YYYY| 837c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// I16TM16 |YYYY| 847c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// |YYYY| 857c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// |YYYY| 867c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// |YYYY| 877c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// I16VE16 |YYYY| 887c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// |YYYY| 897c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// |YYYY| 907c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// |YYYY| 917c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// I16HE16 |YYYY| 927c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// |YYYY| 937c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// |YYYY| 947c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// |YYYY| 957c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// +----+ Chroma U/V predictions (16x8 block each) 967c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// C8DC8 |UUVV| 977c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// |UUVV| 987c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// C8TM8 |UUVV| 997c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// |UUVV| 1007c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// C8VE8 |UUVV| 1017c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// |UUVV| 1027c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// C8HE8 |UUVV| 1037c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// |UUVV| 1047c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// +----+ Intra 4x4 predictions (4x4 block each) 1057c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// |YYYY| I4DC4 I4TM4 I4VE4 I4HE4 1067c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// |YYYY| I4RD4 I4VR4 I4LD4 I4VL4 1077c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// |YY..| I4HD4 I4HU4 I4TMP 1087c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// +----+ 1097c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define BPS 16 // this is the common stride 1107c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define Y_SIZE (BPS * 16) 1117c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define UV_SIZE (BPS * 8) 1127c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define YUV_SIZE (Y_SIZE + UV_SIZE) 1137c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define PRED_SIZE (6 * 16 * BPS + 12 * BPS) 1147c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define Y_OFF (0) 1157c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define U_OFF (Y_SIZE) 1167c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define V_OFF (U_OFF + 8) 1177c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define ALIGN_CST 15 1187c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define DO_ALIGN(PTR) ((uintptr_t)((PTR) + ALIGN_CST) & ~ALIGN_CST) 1197c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 1207c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroraextern const int VP8Scan[16 + 4 + 4]; // in quant.c 1217c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroraextern const int VP8UVModeOffsets[4]; // in analyze.c 1227c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroraextern const int VP8I16ModeOffsets[4]; 1237c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroraextern const int VP8I4ModeOffsets[NUM_BMODES]; 1247c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 1257c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// Layout of prediction blocks 1267c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// intra 16x16 1277c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define I16DC16 (0 * 16 * BPS) 1287c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define I16TM16 (1 * 16 * BPS) 1297c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define I16VE16 (2 * 16 * BPS) 1307c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define I16HE16 (3 * 16 * BPS) 1317c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// chroma 8x8, two U/V blocks side by side (hence: 16x8 each) 1327c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define C8DC8 (4 * 16 * BPS) 1337c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define C8TM8 (4 * 16 * BPS + 8 * BPS) 1347c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define C8VE8 (5 * 16 * BPS) 1357c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define C8HE8 (5 * 16 * BPS + 8 * BPS) 1367c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// intra 4x4 1377c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define I4DC4 (6 * 16 * BPS + 0) 1387c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define I4TM4 (6 * 16 * BPS + 4) 1397c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define I4VE4 (6 * 16 * BPS + 8) 1407c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define I4HE4 (6 * 16 * BPS + 12) 1417c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define I4RD4 (6 * 16 * BPS + 4 * BPS + 0) 1427c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define I4VR4 (6 * 16 * BPS + 4 * BPS + 4) 1437c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define I4LD4 (6 * 16 * BPS + 4 * BPS + 8) 1447c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define I4VL4 (6 * 16 * BPS + 4 * BPS + 12) 1457c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define I4HD4 (6 * 16 * BPS + 8 * BPS + 0) 1467c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define I4HU4 (6 * 16 * BPS + 8 * BPS + 4) 1477c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define I4TMP (6 * 16 * BPS + 8 * BPS + 8) 1487c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 1497c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroratypedef int64_t score_t; // type used for scores, rate, distortion 1507c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define MAX_COST ((score_t)0x7fffffffffffffLL) 1517c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 1527c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define QFIX 17 1537c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define BIAS(b) ((b) << (QFIX - 8)) 1547c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// Fun fact: this is the _only_ line where we're actually being lossy and 1557c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// discarding bits. 1567c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arorastatic inline int QUANTDIV(int n, int iQ, int B) { 1577c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora return (n * iQ + B) >> QFIX; 1587c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora} 1597c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroraextern const uint8_t VP8Zigzag[16]; 1607c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 1617c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora//----------------------------------------------------------------------------- 1627c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// Headers 1637c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 1647c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroratypedef uint8_t ProbaArray[NUM_CTX][NUM_PROBAS]; 1657c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroratypedef uint64_t StatsArray[NUM_CTX][NUM_PROBAS][2]; 1667c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroratypedef uint16_t CostArray[NUM_CTX][MAX_VARIABLE_LEVEL + 1]; 1677c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroratypedef double LFStats[NUM_MB_SEGMENTS][MAX_LF_LEVELS]; // filter stats 1687c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 1697c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroratypedef struct VP8Encoder VP8Encoder; 1707c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 1717c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// segment features 1727c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroratypedef struct { 1737c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int num_segments_; // Actual number of segments. 1 segment only = unused. 1747c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int update_map_; // whether to update the segment map or not. 1757c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora // must be 0 if there's only 1 segment. 1767c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int size_; // bit-cost for transmitting the segment map 1777c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora} VP8SegmentHeader; 1787c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 1797c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// Struct collecting all frame-persistent probabilities. 1807c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroratypedef struct { 1817c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora uint8_t segments_[3]; // probabilities for segment tree 1827c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora uint8_t skip_proba_; // final probability of being skipped. 1837c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora ProbaArray coeffs_[NUM_TYPES][NUM_BANDS]; // 924 bytes 1847c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora StatsArray stats_[NUM_TYPES][NUM_BANDS]; // 7.4k 1857c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora CostArray level_cost_[NUM_TYPES][NUM_BANDS]; // 11.4k 1867c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int use_skip_proba_; // Note: we always use skip_proba for now. 1877c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int nb_skip_, nb_i4_, nb_i16_; // block type counters 1887c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora} VP8Proba; 1897c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 1907c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// Filter parameters. Not actually used in the code (we don't perform 1917c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// the in-loop filtering), but filled from user's config 1927c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroratypedef struct { 1937c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int simple_; // filtering type: 0=complex, 1=simple 1947c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int level_; // base filter level [0..63] 1957c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int sharpness_; // [0..7] 1967c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int i4x4_lf_delta_; // delta filter level for i4x4 relative to i16x16 1977c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora} VP8FilterHeader; 1987c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 1997c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora//----------------------------------------------------------------------------- 2007c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// Informations about the macroblocks. 2017c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 2027c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroratypedef struct { 2037c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora // block type 2047c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora uint8_t type_:2; // 0=i4x4, 1=i16x16 2057c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora uint8_t uv_mode_:2; 2067c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora uint8_t skip_:1; 2077c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora uint8_t segment_:2; 2087c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora uint8_t alpha_; // quantization-susceptibility 2097c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora} VP8MBInfo; 2107c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 2117c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroratypedef struct { 2127c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora uint16_t q_[16]; // quantizer steps 2137c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora uint16_t iq_[16]; // reciprocals, fixed point. 2147c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora uint16_t bias_[16]; // rounding bias 2157c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora uint16_t zthresh_[16]; // value under which a coefficient is zeroed 2167c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora uint16_t sharpen_[16]; // frequency boosters for slight sharpening 2177c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora} VP8Matrix; 2187c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 2197c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroratypedef struct { 2207c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora VP8Matrix y1_, y2_, uv_; // quantization matrices 2217c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int alpha_; // quant-susceptibility, range [-127,127]. Zero is neutral. 2227c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora // Lower values indicate a lower risk of blurriness. 2237c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int beta_; // filter-susceptibility, range [0,255]. 2247c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int quant_; // final segment quantizer. 2257c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int fstrength_; // final in-loop filtering strength 2267c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora // reactivities 2277c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int lambda_i16_, lambda_i4_, lambda_uv_; 2287c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int lambda_mode_, lambda_trellis_, tlambda_; 2297c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int lambda_trellis_i16_, lambda_trellis_i4_, lambda_trellis_uv_; 2307c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora} VP8SegmentInfo; 2317c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 2327c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// Handy transcient struct to accumulate score and info during RD-optimization 2337c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// and mode evaluation. 2347c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroratypedef struct { 2357c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora score_t D, SD, R, score; // Distortion, spectral distortion, rate, score. 2367c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int16_t y_dc_levels[16]; // Quantized levels for luma-DC, luma-AC, chroma. 2377c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int16_t y_ac_levels[16][16]; 2387c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int16_t uv_levels[4 + 4][16]; 2397c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int mode_i16; // mode number for intra16 prediction 2407c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int modes_i4[16]; // mode numbers for intra4 predictions 2417c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int mode_uv; // mode number of chroma prediction 2427c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora uint32_t nz; // non-zero blocks 2437c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora} VP8ModeScore; 2447c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 2457c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// Iterator structure to iterate through macroblocks, pointing to the 2467c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// right neighbouring data (samples, predictions, contexts, ...) 2477c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroratypedef struct { 2487c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int x_, y_; // current macroblock 2497c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int y_offset_, uv_offset_; // offset to the luma / chroma planes 2507c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int y_stride_, uv_stride_; // respective strides 2517c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora uint8_t* yuv_in_; // borrowed from enc_ (for now) 2527c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora uint8_t* yuv_out_; // '' 2537c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora uint8_t* yuv_out2_; // '' 2547c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora uint8_t* yuv_p_; // '' 2557c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora VP8Encoder* enc_; // back-pointer 2567c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora VP8MBInfo* mb_; // current macroblock 2577c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora VP8BitWriter* bw_; // current bit-writer 2587c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora uint8_t* preds_; // intra mode predictors (4x4 blocks) 2597c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora uint32_t* nz_; // non-zero pattern 2607c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora uint8_t i4_boundary_[37]; // 32+5 boundary samples needed by intra4x4 2617c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora uint8_t* i4_top_; // pointer to the current *top boundary sample 2627c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int i4_; // current intra4x4 mode being tested 2637c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int top_nz_[9]; // top-non-zero context. 2647c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int left_nz_[9]; // left-non-zero. left_nz[8] is independent. 2657c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora uint64_t bit_count_[4][3]; // bit counters for coded levels. 2667c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora uint64_t luma_bits_; // macroblock bit-cost for luma 2677c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora uint64_t uv_bits_; // macroblock bit-cost for chroma 2687c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora LFStats* lf_stats_; // filter stats (borrowed from enc_) 2697c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int do_trellis_; // if true, perform extra level optimisation 2707c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int done_; // true when scan is finished 2717c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora} VP8EncIterator; 2727c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 2737c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora // in iterator.c 2747c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// must be called first. 2757c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroravoid VP8IteratorInit(VP8Encoder* const enc, VP8EncIterator* const it); 2767c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// restart a scan. 2777c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroravoid VP8IteratorReset(VP8EncIterator* const it); 2787c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// import samples from source 2797c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroravoid VP8IteratorImport(const VP8EncIterator* const it); 2807c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// export decimated samples 2817c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroravoid VP8IteratorExport(const VP8EncIterator* const it); 2827c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// go to next macroblock. Returns !done_. If *block_to_save is non-null, will 2837c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// save the boundary values to top_/left_ arrays. block_to_save can be 2847c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// it->yuv_out_ or it->yuv_in_. 2857c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroraint VP8IteratorNext(VP8EncIterator* const it, 2867c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora const uint8_t* const block_to_save); 2877c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// Intra4x4 iterations 2887c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroravoid VP8IteratorStartI4(VP8EncIterator* const it); 2897c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// returns true if not done. 2907c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroraint VP8IteratorRotateI4(VP8EncIterator* const it, 2917c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora const uint8_t* const yuv_out); 2927c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 2937c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// Non-zero context setup/teardown 2947c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroravoid VP8IteratorNzToBytes(VP8EncIterator* const it); 2957c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroravoid VP8IteratorBytesToNz(VP8EncIterator* const it); 2967c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 2977c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// Helper functions to set mode properties 2987c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroravoid VP8SetIntra16Mode(const VP8EncIterator* const it, int mode); 2997c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroravoid VP8SetIntra4Mode(const VP8EncIterator* const it, int modes[16]); 3007c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroravoid VP8SetIntraUVMode(const VP8EncIterator* const it, int mode); 3017c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroravoid VP8SetSkip(const VP8EncIterator* const it, int skip); 3027c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroravoid VP8SetSegment(const VP8EncIterator* const it, int segment); 3037c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroravoid VP8IteratorResetCosts(VP8EncIterator* const it); 3047c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 3057c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora//----------------------------------------------------------------------------- 3067c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// VP8Encoder 3077c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 3087c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arorastruct VP8Encoder { 3097c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora const WebPConfig* config_; // user configuration and parameters 3107c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora WebPPicture* pic_; // input / output picture 3117c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 3127c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora // headers 3137c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora VP8FilterHeader filter_hdr_; // filtering information 3147c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora VP8SegmentHeader segment_hdr_; // segment information 3157c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 3167c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int profile_; // VP8's profile, deduced from Config. 3177c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 3187c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora // dimension, in macroblock units. 3197c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int mb_w_, mb_h_; 3207c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int preds_w_; // stride of the *preds_ prediction plane (=4*mb_w + 1) 3217c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 3227c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora // number of partitions (1, 2, 4 or 8 = MAX_NUM_PARTITIONS) 3237c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int num_parts_; 3247c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 3257c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora // per-partition boolean decoders. 3267c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora VP8BitWriter bw_; // part0 3277c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora VP8BitWriter parts_[MAX_NUM_PARTITIONS]; // token partitions 3287c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 3297c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora // quantization info (one set of DC/AC dequant factor per segment) 3307c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora VP8SegmentInfo dqm_[NUM_MB_SEGMENTS]; 3317c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int base_quant_; // nominal quantizer value. Only used 3327c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora // for relative coding of segments' quant. 3337c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int uv_alpha_; // U/V quantization susceptibility 3347c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora // global offset of quantizers, shared by all segments 3357c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int dq_y1_dc_; 3367c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int dq_y2_dc_, dq_y2_ac_; 3377c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int dq_uv_dc_, dq_uv_ac_; 3387c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 3397c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora // probabilities and statistics 3407c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora VP8Proba proba_; 3417c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora uint64_t sse_[3]; // sum of Y/U/V squared errors for all macroblocks 3427c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora uint64_t sse_count_; // pixel count for the sse_[] stats 3437c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int coded_size_; 3447c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int residual_bytes_[3][4]; 3457c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int block_count_[3]; 3467c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 3477c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora // quality/speed settings 3487c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int method_; // 0=fastest, 6=best/slowest. 3497c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int rd_opt_level_; // Deduced from method_. 3507c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 3517c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora // Memory 3527c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora VP8MBInfo* mb_info_; // contextual macroblock infos (mb_w_ + 1) 3537c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora uint8_t* preds_; // predictions modes: (4*mb_w+1) * (4*mb_h+1) 3547c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora uint32_t* nz_; // non-zero bit context: mb_w+1 3557c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora uint8_t* yuv_in_; // input samples 3567c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora uint8_t* yuv_out_; // output samples 3577c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora uint8_t* yuv_out2_; // secondary scratch out-buffer. swapped with yuv_out_. 3587c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora uint8_t* yuv_p_; // scratch buffer for prediction 3597c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora uint8_t *y_top_; // top luma samples. 3607c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora uint8_t *uv_top_; // top u/v samples. 3617c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora // U and V are packed into 16 pixels (8 U + 8 V) 3627c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora uint8_t *y_left_; // left luma samples (adressable from index -1 to 15). 3637c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora uint8_t *u_left_; // left u samples (adressable from index -1 to 7) 3647c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora uint8_t *v_left_; // left v samples (adressable from index -1 to 7) 3657c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 3667c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora LFStats *lf_stats_; // autofilter stats (if NULL, autofilter is off) 3677c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora}; 3687c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 3697c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora//----------------------------------------------------------------------------- 3707c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// internal functions. Not public. 3717c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 3727c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora // in tree.c 3737c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroraextern const uint8_t VP8CoeffsProba0[NUM_TYPES][NUM_BANDS][NUM_CTX][NUM_PROBAS]; 3747c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroraextern const uint8_t 3757c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora VP8CoeffsUpdateProba[NUM_TYPES][NUM_BANDS][NUM_CTX][NUM_PROBAS]; 3767c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// Reset the token probabilities to their initial (default) values 3777c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroravoid VP8DefaultProbas(VP8Encoder* const enc); 3787c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// Write the token probabilities 3797c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroravoid VP8WriteProbas(VP8BitWriter* const bw, const VP8Proba* const probas); 3807c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// Writes the partition #0 modes (that is: all intra modes) 3817c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroravoid VP8CodeIntraModes(VP8Encoder* const enc); 3827c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 3837c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora // in syntax.c 3847c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// Generates the final bitstream by coding the partition0 and headers, 3857c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// and appending an assembly of all the pre-coded token partitions. 3867c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// Return true if everything is ok. 3877c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroraint VP8EncWrite(VP8Encoder* const enc); 3887c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 3897c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora // in frame.c 3907c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroraextern const uint8_t VP8EncBands[16 + 1]; 3917c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// Form all the four Intra16x16 predictions in the yuv_p_ cache 3927c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroravoid VP8MakeLuma16Preds(const VP8EncIterator* const it); 3937c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// Form all the four Chroma8x8 predictions in the yuv_p_ cache 3947c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroravoid VP8MakeChroma8Preds(const VP8EncIterator* const it); 3957c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// Form all the ten Intra4x4 predictions in the yuv_p_ cache 3967c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// for the 4x4 block it->i4_ 3977c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroravoid VP8MakeIntra4Preds(const VP8EncIterator* const it); 3987c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// Rate calculation 3997c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroraint VP8GetCostLuma16(VP8EncIterator* const it, const VP8ModeScore* const rd); 4007c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroraint VP8GetCostLuma4(VP8EncIterator* const it, const int16_t levels[16]); 4017c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroraint VP8GetCostUV(VP8EncIterator* const it, const VP8ModeScore* const rd); 4027c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// Main stat / coding passes 4037c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroraint VP8EncLoop(VP8Encoder* const enc); 4047c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroraint VP8StatLoop(VP8Encoder* const enc); 4057c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 4067c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora // in analysis.c 4077c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// Main analysis loop. Decides the segmentations and complexity. 4087c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// Assigns a first guess for Intra16 and uvmode_ prediction modes. 4097c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroraint VP8EncAnalyze(VP8Encoder* const enc); 4107c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 4117c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora // in quant.c 4127c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// Sets up segment's quantization values, base_quant_ and filter strengths. 4137c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroravoid VP8SetSegmentParams(VP8Encoder* const enc, float quality); 4147c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// Pick best modes and fills the levels. Returns true if skipped. 4157c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroraint VP8Decimate(VP8EncIterator* const it, VP8ModeScore* const rd, int rd_opt); 4167c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 4177c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora // in dsp.c 4187c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// Transforms 4197c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroratypedef void (*VP8Idct)(const uint8_t* ref, const int16_t* in, uint8_t* dst); 4207c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroratypedef void (*VP8Fdct)(const uint8_t* src, const uint8_t* ref, int16_t* out); 4217c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroratypedef void (*VP8WHT)(const int16_t* in, int16_t* out); 4227c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroraextern VP8Idct VP8ITransform; 4237c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroraextern VP8Fdct VP8FTransform; 4247c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroraextern VP8WHT VP8ITransformWHT; 4257c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroraextern VP8WHT VP8FTransformWHT; 4267c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// Predictions 4277c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// *dst is the destination block. *top, *top_right and *left can be NULL. 4287c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroratypedef void (*VP8IntraPreds)(uint8_t *dst, const uint8_t* left, 4297c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora const uint8_t* top); 4307c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroratypedef void (*VP8Intra4Preds)(uint8_t *dst, const uint8_t* top); 4317c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroraextern VP8Intra4Preds VP8EncPredLuma4; 4327c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroraextern VP8IntraPreds VP8EncPredLuma16; 4337c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroraextern VP8IntraPreds VP8EncPredChroma8; 4347c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 4357c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroratypedef int (*VP8Metric)(const uint8_t* pix, const uint8_t* ref); 4367c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroraextern VP8Metric VP8SSE16x16, VP8SSE16x8, VP8SSE8x8, VP8SSE4x4; 4377c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroratypedef int (*VP8WMetric)(const uint8_t* pix, const uint8_t* ref, 4387c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora const uint16_t* const weights); 4397c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroraextern VP8WMetric VP8TDisto4x4, VP8TDisto16x16; 4407c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 4417c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroratypedef void (*VP8BlockCopy)(const uint8_t* src, uint8_t* dst); 4427c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroraextern VP8BlockCopy VP8Copy4x4; 4437c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroraextern VP8BlockCopy VP8Copy8x8; 4447c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroraextern VP8BlockCopy VP8Copy16x16; 4457c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// Quantization 4467c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroratypedef int (*VP8QuantizeBlock)(int16_t in[16], int16_t out[16], 4477c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int n, const VP8Matrix* const mtx); 4487c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroraextern VP8QuantizeBlock VP8EncQuantizeBlock; 4497c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 4507c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroratypedef enum { 4517c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora kSSE2, 4527c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora kSSE3 4537c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora} CPUFeature; 4547c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// returns true if the CPU supports the feature. 4557c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroratypedef int (*VP8CPUInfo)(CPUFeature feature); 4567c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroraextern VP8CPUInfo CPUInfo; 4577c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 4587c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroravoid VP8EncDspInit(void); // must be called before using any of the above 4597c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 4607c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora // in filter.c 4617c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroraextern void VP8InitFilter(VP8EncIterator* const it); 4627c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroraextern void VP8StoreFilterStats(VP8EncIterator* const it); 4637c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroraextern void VP8AdjustFilterStrength(VP8EncIterator* const it); 4647c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 4657c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora//----------------------------------------------------------------------------- 4667c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 4677c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#if defined(__cplusplus) || defined(c_plusplus) 4687c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora} // extern "C" 4697c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#endif 4707c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 4717c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#endif // WEBP_ENC_VP8ENCI_H_ 472