1a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Arora// Copyright 2011 Google Inc. All Rights Reserved. 27c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// 30406ce1417f76f2034833414dcecc9f56253640cVikas Arora// Use of this source code is governed by a BSD-style license 40406ce1417f76f2034833414dcecc9f56253640cVikas Arora// that can be found in the COPYING file in the root of the source 50406ce1417f76f2034833414dcecc9f56253640cVikas Arora// tree. An additional intellectual property rights grant can be found 60406ce1417f76f2034833414dcecc9f56253640cVikas Arora// in the file PATENTS. All contributing project authors may 70406ce1417f76f2034833414dcecc9f56253640cVikas Arora// be found in the AUTHORS file in the root of the source tree. 87c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// ----------------------------------------------------------------------------- 97c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// 107c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// WebP encoder: internal header. 117c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// 127c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// Author: Skal (pascal.massimino@gmail.com) 137c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 147c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#ifndef WEBP_ENC_VP8ENCI_H_ 157c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define WEBP_ENC_VP8ENCI_H_ 167c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 17a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Arora#include <string.h> // for memcpy() 181e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora#include "webp/encode.h" 19a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Arora#include "../dsp/dsp.h" 20a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Arora#include "../utils/bit_writer.h" 211e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora#include "../utils/thread.h" 227c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 238b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora#ifdef __cplusplus 247c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroraextern "C" { 257c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#endif 267c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 27a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Arora//------------------------------------------------------------------------------ 287c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// Various defines and enums 297c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 307c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// version numbers 317c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define ENC_MAJ_VERSION 0 328b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora#define ENC_MIN_VERSION 4 33af51b94a435132e9014c324e25fb686b3d07a8c8Vikas Arora#define ENC_REV_VERSION 1 34466727975bcc57c0c5597bcd0747a2fe4777b303Vikas Arora 357c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// intra prediction modes 367c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroraenum { B_DC_PRED = 0, // 4x4 modes 377c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora B_TM_PRED = 1, 387c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora B_VE_PRED = 2, 397c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora B_HE_PRED = 3, 407c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora B_RD_PRED = 4, 417c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora B_VR_PRED = 5, 427c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora B_LD_PRED = 6, 437c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora B_VL_PRED = 7, 447c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora B_HD_PRED = 8, 457c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora B_HU_PRED = 9, 467c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora NUM_BMODES = B_HU_PRED + 1 - B_DC_PRED, // = 10 477c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 487c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora // Luma16 or UV modes 497c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora DC_PRED = B_DC_PRED, V_PRED = B_VE_PRED, 501e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora H_PRED = B_HE_PRED, TM_PRED = B_TM_PRED, 511e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora NUM_PRED_MODES = 4 527c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora }; 537c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 547c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroraenum { NUM_MB_SEGMENTS = 4, 557c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora MAX_NUM_PARTITIONS = 8, 567c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora NUM_TYPES = 4, // 0: i16-AC, 1: i16-DC, 2:chroma-AC, 3:i4-AC 577c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora NUM_BANDS = 8, 587c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora NUM_CTX = 3, 597c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora NUM_PROBAS = 11, 600406ce1417f76f2034833414dcecc9f56253640cVikas Arora MAX_LF_LEVELS = 64, // Maximum loop filter level 610406ce1417f76f2034833414dcecc9f56253640cVikas Arora MAX_VARIABLE_LEVEL = 67, // last (inclusive) level with variable cost 620406ce1417f76f2034833414dcecc9f56253640cVikas Arora MAX_LEVEL = 2047 // max level (note: max codable is 2047 + 67) 637c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora }; 647c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 651e7bf8805bd030c19924a5306837ecd72c295751Vikas Aroratypedef enum { // Rate-distortion optimization levels 661e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora RD_OPT_NONE = 0, // no rd-opt 671e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora RD_OPT_BASIC = 1, // basic scoring (no trellis) 681e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora RD_OPT_TRELLIS = 2, // perform trellis-quant on the final decision only 691e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora RD_OPT_TRELLIS_ALL = 3 // trellis-quant for every scoring (much slower) 701e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora} VP8RDLevel; 711e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora 727c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// YUV-cache parameters. Cache is 16-pixels wide. 737c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// The original or reconstructed samples can be accessed using VP8Scan[] 747c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// The predicted blocks can be accessed using offsets to yuv_p_ and 757c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// the arrays VP8*ModeOffsets[]; 767c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// +----+ YUV Samples area. See VP8Scan[] for accessing the blocks. 778b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora// Y_OFF |YYYY| <- original samples ('yuv_in_') 787c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// |YYYY| 797c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// |YYYY| 807c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// |YYYY| 817c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// U_OFF |UUVV| V_OFF (=U_OFF + 8) 827c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// |UUVV| 837c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// +----+ 847c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// Y_OFF |YYYY| <- compressed/decoded samples ('yuv_out_') 857c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// |YYYY| There are two buffers like this ('yuv_out_'/'yuv_out2_') 867c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// |YYYY| 877c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// |YYYY| 887c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// U_OFF |UUVV| V_OFF 897c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// |UUVV| 907c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// x2 (for yuv_out2_) 917c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// +----+ Prediction area ('yuv_p_', size = PRED_SIZE) 927c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// I16DC16 |YYYY| Intra16 predictions (16x16 block each) 937c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// |YYYY| 947c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// |YYYY| 957c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// |YYYY| 967c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// I16TM16 |YYYY| 977c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// |YYYY| 987c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// |YYYY| 997c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// |YYYY| 1007c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// I16VE16 |YYYY| 1017c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// |YYYY| 1027c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// |YYYY| 1037c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// |YYYY| 1047c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// I16HE16 |YYYY| 1057c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// |YYYY| 1067c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// |YYYY| 1077c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// |YYYY| 1087c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// +----+ Chroma U/V predictions (16x8 block each) 1097c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// C8DC8 |UUVV| 1107c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// |UUVV| 1117c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// C8TM8 |UUVV| 1127c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// |UUVV| 1137c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// C8VE8 |UUVV| 1147c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// |UUVV| 1157c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// C8HE8 |UUVV| 1167c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// |UUVV| 1177c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// +----+ Intra 4x4 predictions (4x4 block each) 1187c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// |YYYY| I4DC4 I4TM4 I4VE4 I4HE4 1197c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// |YYYY| I4RD4 I4VR4 I4LD4 I4VL4 1207c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// |YY..| I4HD4 I4HU4 I4TMP 1217c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// +----+ 1227c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define BPS 16 // this is the common stride 1237c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define Y_SIZE (BPS * 16) 1247c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define UV_SIZE (BPS * 8) 1257c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define YUV_SIZE (Y_SIZE + UV_SIZE) 1267c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define PRED_SIZE (6 * 16 * BPS + 12 * BPS) 1277c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define Y_OFF (0) 1287c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define U_OFF (Y_SIZE) 1297c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define V_OFF (U_OFF + 8) 1307c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define ALIGN_CST 15 1317c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define DO_ALIGN(PTR) ((uintptr_t)((PTR) + ALIGN_CST) & ~ALIGN_CST) 1327c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 133af51b94a435132e9014c324e25fb686b3d07a8c8Vikas Aroraextern const int VP8Scan[16]; // in quant.c 134af51b94a435132e9014c324e25fb686b3d07a8c8Vikas Aroraextern const int VP8UVModeOffsets[4]; // in analyze.c 1357c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroraextern const int VP8I16ModeOffsets[4]; 1367c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroraextern const int VP8I4ModeOffsets[NUM_BMODES]; 1377c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 1387c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// Layout of prediction blocks 1397c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// intra 16x16 1407c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define I16DC16 (0 * 16 * BPS) 1417c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define I16TM16 (1 * 16 * BPS) 1427c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define I16VE16 (2 * 16 * BPS) 1437c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define I16HE16 (3 * 16 * BPS) 1447c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// chroma 8x8, two U/V blocks side by side (hence: 16x8 each) 1457c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define C8DC8 (4 * 16 * BPS) 1467c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define C8TM8 (4 * 16 * BPS + 8 * BPS) 1477c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define C8VE8 (5 * 16 * BPS) 1487c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define C8HE8 (5 * 16 * BPS + 8 * BPS) 1497c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// intra 4x4 1507c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define I4DC4 (6 * 16 * BPS + 0) 1517c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define I4TM4 (6 * 16 * BPS + 4) 1527c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define I4VE4 (6 * 16 * BPS + 8) 1537c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define I4HE4 (6 * 16 * BPS + 12) 1547c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define I4RD4 (6 * 16 * BPS + 4 * BPS + 0) 1557c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define I4VR4 (6 * 16 * BPS + 4 * BPS + 4) 1567c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define I4LD4 (6 * 16 * BPS + 4 * BPS + 8) 1577c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define I4VL4 (6 * 16 * BPS + 4 * BPS + 12) 1587c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define I4HD4 (6 * 16 * BPS + 8 * BPS + 0) 1597c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define I4HU4 (6 * 16 * BPS + 8 * BPS + 4) 1607c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define I4TMP (6 * 16 * BPS + 8 * BPS + 8) 1617c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 1627c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroratypedef int64_t score_t; // type used for scores, rate, distortion 163af51b94a435132e9014c324e25fb686b3d07a8c8Vikas Arora// Note that MAX_COST is not the maximum allowed by sizeof(score_t), 164af51b94a435132e9014c324e25fb686b3d07a8c8Vikas Arora// in order to allow overflowing computations. 1657c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define MAX_COST ((score_t)0x7fffffffffffffLL) 1667c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 1677c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define QFIX 17 1687c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#define BIAS(b) ((b) << (QFIX - 8)) 1697c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// Fun fact: this is the _only_ line where we're actually being lossy and 1707c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// discarding bits. 171af51b94a435132e9014c324e25fb686b3d07a8c8Vikas Arorastatic WEBP_INLINE int QUANTDIV(uint32_t n, uint32_t iQ, uint32_t B) { 172af51b94a435132e9014c324e25fb686b3d07a8c8Vikas Arora return (int)((n * iQ + B) >> QFIX); 1737c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora} 1741e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora 1751e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora// size of histogram used by CollectHistogram. 1761e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora#define MAX_COEFF_THRESH 31 1771e7bf8805bd030c19924a5306837ecd72c295751Vikas Aroratypedef struct VP8Histogram VP8Histogram; 1781e7bf8805bd030c19924a5306837ecd72c295751Vikas Arorastruct VP8Histogram { 1791e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora // TODO(skal): we only need to store the max_value and last_non_zero actually. 1801e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora int distribution[MAX_COEFF_THRESH + 1]; 1811e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora}; 1821e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora 1831e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora// Uncomment the following to remove token-buffer code: 1841e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora// #define DISABLE_TOKEN_BUFFER 1857c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 186a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Arora//------------------------------------------------------------------------------ 1877c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// Headers 1887c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 189a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Aroratypedef uint32_t proba_t; // 16b + 16b 1907c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroratypedef uint8_t ProbaArray[NUM_CTX][NUM_PROBAS]; 191a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Aroratypedef proba_t StatsArray[NUM_CTX][NUM_PROBAS]; 1927c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroratypedef uint16_t CostArray[NUM_CTX][MAX_VARIABLE_LEVEL + 1]; 1937c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroratypedef double LFStats[NUM_MB_SEGMENTS][MAX_LF_LEVELS]; // filter stats 1947c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 1957c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroratypedef struct VP8Encoder VP8Encoder; 1967c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 1977c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// segment features 1987c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroratypedef struct { 1997c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int num_segments_; // Actual number of segments. 1 segment only = unused. 2007c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int update_map_; // whether to update the segment map or not. 2017c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora // must be 0 if there's only 1 segment. 2027c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int size_; // bit-cost for transmitting the segment map 2037c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora} VP8SegmentHeader; 2047c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 2057c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// Struct collecting all frame-persistent probabilities. 2067c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroratypedef struct { 2077c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora uint8_t segments_[3]; // probabilities for segment tree 2087c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora uint8_t skip_proba_; // final probability of being skipped. 209af51b94a435132e9014c324e25fb686b3d07a8c8Vikas Arora ProbaArray coeffs_[NUM_TYPES][NUM_BANDS]; // 1056 bytes 210a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Arora StatsArray stats_[NUM_TYPES][NUM_BANDS]; // 4224 bytes 211af51b94a435132e9014c324e25fb686b3d07a8c8Vikas Arora CostArray level_cost_[NUM_TYPES][NUM_BANDS]; // 13056 bytes 212a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Arora int dirty_; // if true, need to call VP8CalculateLevelCosts() 2137c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int use_skip_proba_; // Note: we always use skip_proba for now. 21488fe2b83c4b9232cd08729556fd0485d6a6a92cdVikas Arora int nb_skip_; // number of skipped blocks 2157c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora} VP8Proba; 2167c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 2177c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// Filter parameters. Not actually used in the code (we don't perform 2187c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// the in-loop filtering), but filled from user's config 2197c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroratypedef struct { 2207c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int simple_; // filtering type: 0=complex, 1=simple 2217c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int level_; // base filter level [0..63] 2227c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int sharpness_; // [0..7] 2237c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int i4x4_lf_delta_; // delta filter level for i4x4 relative to i16x16 2247c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora} VP8FilterHeader; 2257c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 226a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Arora//------------------------------------------------------------------------------ 2277c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// Informations about the macroblocks. 2287c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 2297c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroratypedef struct { 2307c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora // block type 231a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Arora unsigned int type_:2; // 0=i4x4, 1=i16x16 232a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Arora unsigned int uv_mode_:2; 233a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Arora unsigned int skip_:1; 234a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Arora unsigned int segment_:2; 2357c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora uint8_t alpha_; // quantization-susceptibility 2367c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora} VP8MBInfo; 2377c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 238a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Aroratypedef struct VP8Matrix { 2397c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora uint16_t q_[16]; // quantizer steps 2407c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora uint16_t iq_[16]; // reciprocals, fixed point. 241af51b94a435132e9014c324e25fb686b3d07a8c8Vikas Arora uint32_t bias_[16]; // rounding bias 242af51b94a435132e9014c324e25fb686b3d07a8c8Vikas Arora uint32_t zthresh_[16]; // value below which a coefficient is zeroed 2437c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora uint16_t sharpen_[16]; // frequency boosters for slight sharpening 2447c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora} VP8Matrix; 2457c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 2467c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroratypedef struct { 2477c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora VP8Matrix y1_, y2_, uv_; // quantization matrices 2487c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int alpha_; // quant-susceptibility, range [-127,127]. Zero is neutral. 2497c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora // Lower values indicate a lower risk of blurriness. 2507c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int beta_; // filter-susceptibility, range [0,255]. 2517c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int quant_; // final segment quantizer. 2527c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int fstrength_; // final in-loop filtering strength 2538b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora int max_edge_; // max edge delta (for filtering strength) 2548b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora int min_disto_; // minimum distortion required to trigger filtering record 2557c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora // reactivities 2567c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int lambda_i16_, lambda_i4_, lambda_uv_; 2577c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int lambda_mode_, lambda_trellis_, tlambda_; 2587c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int lambda_trellis_i16_, lambda_trellis_i4_, lambda_trellis_uv_; 2597c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora} VP8SegmentInfo; 2607c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 2618b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora// Handy transient struct to accumulate score and info during RD-optimization 2627c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// and mode evaluation. 2637c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroratypedef struct { 2648b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora score_t D, SD; // Distortion, spectral distortion 2658b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora score_t H, R, score; // header bits, rate, score. 2667c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int16_t y_dc_levels[16]; // Quantized levels for luma-DC, luma-AC, chroma. 2677c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int16_t y_ac_levels[16][16]; 2687c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int16_t uv_levels[4 + 4][16]; 2697c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int mode_i16; // mode number for intra16 prediction 270a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Arora uint8_t modes_i4[16]; // mode numbers for intra4 predictions 2717c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int mode_uv; // mode number of chroma prediction 2727c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora uint32_t nz; // non-zero blocks 2737c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora} VP8ModeScore; 2747c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 2757c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// Iterator structure to iterate through macroblocks, pointing to the 2767c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// right neighbouring data (samples, predictions, contexts, ...) 2777c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroratypedef struct { 2787c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int x_, y_; // current macroblock 2797c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int y_stride_, uv_stride_; // respective strides 2808b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora uint8_t* yuv_in_; // input samples 2818b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora uint8_t* yuv_out_; // output samples 2828b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora uint8_t* yuv_out2_; // secondary buffer swapped with yuv_out_. 2838b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora uint8_t* yuv_p_; // scratch buffer for prediction 2847c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora VP8Encoder* enc_; // back-pointer 2857c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora VP8MBInfo* mb_; // current macroblock 2867c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora VP8BitWriter* bw_; // current bit-writer 2877c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora uint8_t* preds_; // intra mode predictors (4x4 blocks) 2887c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora uint32_t* nz_; // non-zero pattern 2897c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora uint8_t i4_boundary_[37]; // 32+5 boundary samples needed by intra4x4 290466727975bcc57c0c5597bcd0747a2fe4777b303Vikas Arora uint8_t* i4_top_; // pointer to the current top boundary sample 2917c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int i4_; // current intra4x4 mode being tested 2927c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int top_nz_[9]; // top-non-zero context. 2937c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int left_nz_[9]; // left-non-zero. left_nz[8] is independent. 2947c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora uint64_t bit_count_[4][3]; // bit counters for coded levels. 2957c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora uint64_t luma_bits_; // macroblock bit-cost for luma 2967c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora uint64_t uv_bits_; // macroblock bit-cost for chroma 2977c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora LFStats* lf_stats_; // filter stats (borrowed from enc_) 2987c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int do_trellis_; // if true, perform extra level optimisation 2998b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora int count_down_; // number of mb still to be processed 3008b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora int count_down0_; // starting counter value (for progress) 301a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Arora int percent0_; // saved initial progress percent 3028b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora 3038b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora uint8_t* y_left_; // left luma samples (addressable from index -1 to 15). 3048b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora uint8_t* u_left_; // left u samples (addressable from index -1 to 7) 3058b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora uint8_t* v_left_; // left v samples (addressable from index -1 to 7) 3068b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora 3078b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora uint8_t* y_top_; // top luma samples at position 'x_' 3088b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora uint8_t* uv_top_; // top u/v samples at position 'x_', packed as 16 bytes 3098b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora 3108b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora // memory for storing y/u/v_left_ and yuv_in_/out_* 3118b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora uint8_t yuv_left_mem_[17 + 16 + 16 + 8 + ALIGN_CST]; // memory for *_left_ 3128b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora uint8_t yuv_mem_[3 * YUV_SIZE + PRED_SIZE + ALIGN_CST]; // memory for yuv_* 3137c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora} VP8EncIterator; 3147c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 3157c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora // in iterator.c 3168b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora// must be called first 3177c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroravoid VP8IteratorInit(VP8Encoder* const enc, VP8EncIterator* const it); 3188b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora// restart a scan 3197c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroravoid VP8IteratorReset(VP8EncIterator* const it); 3208b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora// reset iterator position to row 'y' 3218b720228d581a84fd173b6dcb2fa295b59db489aVikas Aroravoid VP8IteratorSetRow(VP8EncIterator* const it, int y); 3228b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora// set count down (=number of iterations to go) 3238b720228d581a84fd173b6dcb2fa295b59db489aVikas Aroravoid VP8IteratorSetCountDown(VP8EncIterator* const it, int count_down); 3248b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora// return true if iteration is finished 3258b720228d581a84fd173b6dcb2fa295b59db489aVikas Aroraint VP8IteratorIsDone(const VP8EncIterator* const it); 3268b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora// Import uncompressed samples from source. 3278b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora// If tmp_32 is not NULL, import boundary samples too. 3288b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora// tmp_32 is a 32-bytes scratch buffer that must be aligned in memory. 3298b720228d581a84fd173b6dcb2fa295b59db489aVikas Aroravoid VP8IteratorImport(VP8EncIterator* const it, uint8_t* tmp_32); 3307c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// export decimated samples 3317c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroravoid VP8IteratorExport(const VP8EncIterator* const it); 3328b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora// go to next macroblock. Returns false if not finished. 3338b720228d581a84fd173b6dcb2fa295b59db489aVikas Aroraint VP8IteratorNext(VP8EncIterator* const it); 3348b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora// save the yuv_out_ boundary values to top_/left_ arrays for next iterations. 3358b720228d581a84fd173b6dcb2fa295b59db489aVikas Aroravoid VP8IteratorSaveBoundary(VP8EncIterator* const it); 336a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Arora// Report progression based on macroblock rows. Return 0 for user-abort request. 337a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Aroraint VP8IteratorProgress(const VP8EncIterator* const it, 338a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Arora int final_delta_percent); 3397c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// Intra4x4 iterations 3407c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroravoid VP8IteratorStartI4(VP8EncIterator* const it); 3417c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// returns true if not done. 3427c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroraint VP8IteratorRotateI4(VP8EncIterator* const it, 3437c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora const uint8_t* const yuv_out); 3447c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 3457c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// Non-zero context setup/teardown 3467c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroravoid VP8IteratorNzToBytes(VP8EncIterator* const it); 3477c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroravoid VP8IteratorBytesToNz(VP8EncIterator* const it); 3487c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 3497c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// Helper functions to set mode properties 3507c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroravoid VP8SetIntra16Mode(const VP8EncIterator* const it, int mode); 351a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Aroravoid VP8SetIntra4Mode(const VP8EncIterator* const it, const uint8_t* modes); 3527c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroravoid VP8SetIntraUVMode(const VP8EncIterator* const it, int mode); 3537c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroravoid VP8SetSkip(const VP8EncIterator* const it, int skip); 3547c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroravoid VP8SetSegment(const VP8EncIterator* const it, int segment); 3557c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 356a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Arora//------------------------------------------------------------------------------ 357a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Arora// Paginated token buffer 358a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Arora 3591e7bf8805bd030c19924a5306837ecd72c295751Vikas Aroratypedef struct VP8Tokens VP8Tokens; // struct details in token.c 360a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Arora 361a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Aroratypedef struct { 3621e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora#if !defined(DISABLE_TOKEN_BUFFER) 3631e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora VP8Tokens* pages_; // first page 3641e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora VP8Tokens** last_page_; // last page 3651e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora uint16_t* tokens_; // set to (*last_page_)->tokens_ 366af51b94a435132e9014c324e25fb686b3d07a8c8Vikas Arora int left_; // how many free tokens left before the page is full 367af51b94a435132e9014c324e25fb686b3d07a8c8Vikas Arora int page_size_; // number of tokens per page 3681e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora#endif 3691e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora int error_; // true in case of malloc error 370a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Arora} VP8TBuffer; 371a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Arora 372af51b94a435132e9014c324e25fb686b3d07a8c8Vikas Arora// initialize an empty buffer 373af51b94a435132e9014c324e25fb686b3d07a8c8Vikas Aroravoid VP8TBufferInit(VP8TBuffer* const b, int page_size); 3741e7bf8805bd030c19924a5306837ecd72c295751Vikas Aroravoid VP8TBufferClear(VP8TBuffer* const b); // de-allocate pages memory 375a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Arora 3761e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora#if !defined(DISABLE_TOKEN_BUFFER) 3771e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora 3781e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora// Finalizes bitstream when probabilities are known. 3791e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora// Deletes the allocated token memory if final_pass is true. 3801e7bf8805bd030c19924a5306837ecd72c295751Vikas Aroraint VP8EmitTokens(VP8TBuffer* const b, VP8BitWriter* const bw, 3811e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora const uint8_t* const probas, int final_pass); 3821e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora 3831e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora// record the coding of coefficients without knowing the probabilities yet 3841e7bf8805bd030c19924a5306837ecd72c295751Vikas Aroraint VP8RecordCoeffTokens(int ctx, int coeff_type, int first, int last, 3851e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora const int16_t* const coeffs, 3861e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora VP8TBuffer* const tokens); 3871e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora 3888b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora// Estimate the final coded size given a set of 'probas'. 3898b720228d581a84fd173b6dcb2fa295b59db489aVikas Arorasize_t VP8EstimateTokenSize(VP8TBuffer* const b, const uint8_t* const probas); 3908b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora 3911e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora// unused for now 3921e7bf8805bd030c19924a5306837ecd72c295751Vikas Aroravoid VP8TokenToStats(const VP8TBuffer* const b, proba_t* const stats); 3931e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora 3941e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora#endif // !DISABLE_TOKEN_BUFFER 395a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Arora 396a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Arora//------------------------------------------------------------------------------ 3977c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// VP8Encoder 3987c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 3997c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arorastruct VP8Encoder { 4007c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora const WebPConfig* config_; // user configuration and parameters 4017c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora WebPPicture* pic_; // input / output picture 4027c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 4037c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora // headers 4047c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora VP8FilterHeader filter_hdr_; // filtering information 4057c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora VP8SegmentHeader segment_hdr_; // segment information 4067c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 4077c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int profile_; // VP8's profile, deduced from Config. 4087c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 4097c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora // dimension, in macroblock units. 4107c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int mb_w_, mb_h_; 4117c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int preds_w_; // stride of the *preds_ prediction plane (=4*mb_w + 1) 4127c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 4137c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora // number of partitions (1, 2, 4 or 8 = MAX_NUM_PARTITIONS) 4147c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int num_parts_; 4157c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 4167c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora // per-partition boolean decoders. 4177c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora VP8BitWriter bw_; // part0 4187c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora VP8BitWriter parts_[MAX_NUM_PARTITIONS]; // token partitions 4191e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora VP8TBuffer tokens_; // token buffer 4207c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 421a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Arora int percent_; // for progress 422a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Arora 423466727975bcc57c0c5597bcd0747a2fe4777b303Vikas Arora // transparency blob 424466727975bcc57c0c5597bcd0747a2fe4777b303Vikas Arora int has_alpha_; 425466727975bcc57c0c5597bcd0747a2fe4777b303Vikas Arora uint8_t* alpha_data_; // non-NULL if transparency is present 426a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Arora uint32_t alpha_data_size_; 4271e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora WebPWorker alpha_worker_; 428466727975bcc57c0c5597bcd0747a2fe4777b303Vikas Arora 4297c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora // quantization info (one set of DC/AC dequant factor per segment) 4307c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora VP8SegmentInfo dqm_[NUM_MB_SEGMENTS]; 4317c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int base_quant_; // nominal quantizer value. Only used 4327c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora // for relative coding of segments' quant. 4331e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora int alpha_; // global susceptibility (<=> complexity) 4347c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int uv_alpha_; // U/V quantization susceptibility 4357c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora // global offset of quantizers, shared by all segments 4367c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int dq_y1_dc_; 4377c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int dq_y2_dc_, dq_y2_ac_; 4387c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int dq_uv_dc_, dq_uv_ac_; 4397c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 4407c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora // probabilities and statistics 4417c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora VP8Proba proba_; 442a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Arora uint64_t sse_[4]; // sum of Y/U/V/A squared errors for all macroblocks 4437c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora uint64_t sse_count_; // pixel count for the sse_[] stats 4447c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int coded_size_; 4457c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int residual_bytes_[3][4]; 4467c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora int block_count_[3]; 4477c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 4487c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora // quality/speed settings 4491e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora int method_; // 0=fastest, 6=best/slowest. 4501e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora VP8RDLevel rd_opt_level_; // Deduced from method_. 4511e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora int max_i4_header_bits_; // partition #0 safeness factor 4521e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora int thread_level_; // derived from config->thread_level 4531e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora int do_search_; // derived from config->target_XXX 4541e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora int use_tokens_; // if true, use token buffer 4557c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 4567c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora // Memory 4577c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora VP8MBInfo* mb_info_; // contextual macroblock infos (mb_w_ + 1) 4587c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora uint8_t* preds_; // predictions modes: (4*mb_w+1) * (4*mb_h+1) 4597c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora uint32_t* nz_; // non-zero bit context: mb_w+1 4607c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora uint8_t *y_top_; // top luma samples. 4617c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora uint8_t *uv_top_; // top u/v samples. 4628b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora // U and V are packed into 16 bytes (8 U + 8 V) 4637c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora LFStats *lf_stats_; // autofilter stats (if NULL, autofilter is off) 4647c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora}; 4657c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 466a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Arora//------------------------------------------------------------------------------ 4677c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// internal functions. Not public. 4687c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 4697c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora // in tree.c 4707c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroraextern const uint8_t VP8CoeffsProba0[NUM_TYPES][NUM_BANDS][NUM_CTX][NUM_PROBAS]; 4717c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroraextern const uint8_t 4727c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora VP8CoeffsUpdateProba[NUM_TYPES][NUM_BANDS][NUM_CTX][NUM_PROBAS]; 4737c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// Reset the token probabilities to their initial (default) values 4747c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroravoid VP8DefaultProbas(VP8Encoder* const enc); 4757c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// Write the token probabilities 4767c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroravoid VP8WriteProbas(VP8BitWriter* const bw, const VP8Proba* const probas); 4777c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// Writes the partition #0 modes (that is: all intra modes) 4787c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroravoid VP8CodeIntraModes(VP8Encoder* const enc); 4797c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 4807c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora // in syntax.c 4817c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// Generates the final bitstream by coding the partition0 and headers, 4827c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// and appending an assembly of all the pre-coded token partitions. 4837c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// Return true if everything is ok. 4847c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroraint VP8EncWrite(VP8Encoder* const enc); 485a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Arora// Release memory allocated for bit-writing in VP8EncLoop & seq. 486a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Aroravoid VP8EncFreeBitWriters(VP8Encoder* const enc); 4877c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 4887c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora // in frame.c 4897c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroraextern const uint8_t VP8EncBands[16 + 1]; 4901e7bf8805bd030c19924a5306837ecd72c295751Vikas Aroraextern const uint8_t VP8Cat3[]; 4911e7bf8805bd030c19924a5306837ecd72c295751Vikas Aroraextern const uint8_t VP8Cat4[]; 4921e7bf8805bd030c19924a5306837ecd72c295751Vikas Aroraextern const uint8_t VP8Cat5[]; 4931e7bf8805bd030c19924a5306837ecd72c295751Vikas Aroraextern const uint8_t VP8Cat6[]; 4941e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora 4957c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// Form all the four Intra16x16 predictions in the yuv_p_ cache 4967c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroravoid VP8MakeLuma16Preds(const VP8EncIterator* const it); 4977c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// Form all the four Chroma8x8 predictions in the yuv_p_ cache 4987c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroravoid VP8MakeChroma8Preds(const VP8EncIterator* const it); 4997c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// Form all the ten Intra4x4 predictions in the yuv_p_ cache 5007c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// for the 4x4 block it->i4_ 5017c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroravoid VP8MakeIntra4Preds(const VP8EncIterator* const it); 5027c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// Rate calculation 5037c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroraint VP8GetCostLuma16(VP8EncIterator* const it, const VP8ModeScore* const rd); 5047c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroraint VP8GetCostLuma4(VP8EncIterator* const it, const int16_t levels[16]); 5057c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroraint VP8GetCostUV(VP8EncIterator* const it, const VP8ModeScore* const rd); 5061e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora// Main coding calls 5077c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroraint VP8EncLoop(VP8Encoder* const enc); 5081e7bf8805bd030c19924a5306837ecd72c295751Vikas Aroraint VP8EncTokenLoop(VP8Encoder* const enc); 5097c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 510466727975bcc57c0c5597bcd0747a2fe4777b303Vikas Arora // in webpenc.c 511466727975bcc57c0c5597bcd0747a2fe4777b303Vikas Arora// Assign an error code to a picture. Return false for convenience. 512a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Aroraint WebPEncodingSetError(const WebPPicture* const pic, WebPEncodingError error); 513a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Aroraint WebPReportProgress(const WebPPicture* const pic, 514a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Arora int percent, int* const percent_store); 515a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Arora 5167c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora // in analysis.c 5177c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// Main analysis loop. Decides the segmentations and complexity. 5187c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// Assigns a first guess for Intra16 and uvmode_ prediction modes. 5197c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroraint VP8EncAnalyze(VP8Encoder* const enc); 5207c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 5217c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora // in quant.c 5227c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// Sets up segment's quantization values, base_quant_ and filter strengths. 5237c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Aroravoid VP8SetSegmentParams(VP8Encoder* const enc, float quality); 5247c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora// Pick best modes and fills the levels. Returns true if skipped. 5251e7bf8805bd030c19924a5306837ecd72c295751Vikas Aroraint VP8Decimate(VP8EncIterator* const it, VP8ModeScore* const rd, 5261e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora VP8RDLevel rd_opt); 5277c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 528466727975bcc57c0c5597bcd0747a2fe4777b303Vikas Arora // in alpha.c 529a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Aroravoid VP8EncInitAlpha(VP8Encoder* const enc); // initialize alpha compression 5301e7bf8805bd030c19924a5306837ecd72c295751Vikas Aroraint VP8EncStartAlpha(VP8Encoder* const enc); // start alpha coding process 531a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Aroraint VP8EncFinishAlpha(VP8Encoder* const enc); // finalize compressed data 5321e7bf8805bd030c19924a5306837ecd72c295751Vikas Aroraint VP8EncDeleteAlpha(VP8Encoder* const enc); // delete compressed data 533466727975bcc57c0c5597bcd0747a2fe4777b303Vikas Arora 5347c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora // in filter.c 5357c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 536a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Arora// SSIM utils 537a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Aroratypedef struct { 538a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Arora double w, xm, ym, xxm, xym, yym; 539a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Arora} DistoStats; 540a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Aroravoid VP8SSIMAddStats(const DistoStats* const src, DistoStats* const dst); 541a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Aroravoid VP8SSIMAccumulatePlane(const uint8_t* src1, int stride1, 542a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Arora const uint8_t* src2, int stride2, 543a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Arora int W, int H, DistoStats* const stats); 544a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Aroradouble VP8SSIMGet(const DistoStats* const stats); 545a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Aroradouble VP8SSIMGetSquaredError(const DistoStats* const stats); 546a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Arora 547a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Arora// autofilter 548a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Aroravoid VP8InitFilter(VP8EncIterator* const it); 549a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Aroravoid VP8StoreFilterStats(VP8EncIterator* const it); 550a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Aroravoid VP8AdjustFilterStrength(VP8EncIterator* const it); 551a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Arora 5528b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora// returns the approximate filtering strength needed to smooth a edge 5538b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora// step of 'delta', given a sharpness parameter 'sharpness'. 5548b720228d581a84fd173b6dcb2fa295b59db489aVikas Aroraint VP8FilterStrengthFromDelta(int sharpness, int delta); 5558b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora 556af51b94a435132e9014c324e25fb686b3d07a8c8Vikas Arora // misc utils for picture_*.c: 557af51b94a435132e9014c324e25fb686b3d07a8c8Vikas Arora 558af51b94a435132e9014c324e25fb686b3d07a8c8Vikas Arora// Remove reference to the ARGB/YUVA buffer (doesn't free anything). 559af51b94a435132e9014c324e25fb686b3d07a8c8Vikas Aroravoid WebPPictureResetBuffers(WebPPicture* const picture); 560af51b94a435132e9014c324e25fb686b3d07a8c8Vikas Arora 561af51b94a435132e9014c324e25fb686b3d07a8c8Vikas Arora// Allocates ARGB buffer of given dimension (previous one is always free'd). 562af51b94a435132e9014c324e25fb686b3d07a8c8Vikas Arora// Preserves the YUV(A) buffer. Returns false in case of error (invalid param, 563af51b94a435132e9014c324e25fb686b3d07a8c8Vikas Arora// out-of-memory). 564af51b94a435132e9014c324e25fb686b3d07a8c8Vikas Aroraint WebPPictureAllocARGB(WebPPicture* const picture, int width, int height); 565af51b94a435132e9014c324e25fb686b3d07a8c8Vikas Arora 566af51b94a435132e9014c324e25fb686b3d07a8c8Vikas Arora// Allocates YUVA buffer of given dimension (previous one is always free'd). 567af51b94a435132e9014c324e25fb686b3d07a8c8Vikas Arora// Uses picture->csp to determine whether an alpha buffer is needed. 568af51b94a435132e9014c324e25fb686b3d07a8c8Vikas Arora// Preserves the ARGB buffer. 569af51b94a435132e9014c324e25fb686b3d07a8c8Vikas Arora// Returns false in case of error (invalid param, out-of-memory). 570af51b94a435132e9014c324e25fb686b3d07a8c8Vikas Aroraint WebPPictureAllocYUVA(WebPPicture* const picture, int width, int height); 571af51b94a435132e9014c324e25fb686b3d07a8c8Vikas Arora 572a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Arora//------------------------------------------------------------------------------ 5737c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 574af51b94a435132e9014c324e25fb686b3d07a8c8Vikas Arora#if WEBP_ENCODER_ABI_VERSION <= 0x0202 575af51b94a435132e9014c324e25fb686b3d07a8c8Vikas Aroravoid WebPMemoryWriterClear(WebPMemoryWriter* writer); 576af51b94a435132e9014c324e25fb686b3d07a8c8Vikas Arora#endif 577af51b94a435132e9014c324e25fb686b3d07a8c8Vikas Arora 5788b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora#ifdef __cplusplus 5797c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora} // extern "C" 5807c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora#endif 5817c970a0a679089e416c5887cf7fcece15a70bfa4Vikas Arora 582a2415724fb3466168b2af5b08bd94ba732c0e753Vikas Arora#endif /* WEBP_ENC_VP8ENCI_H_ */ 583