15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright 2011 Google Inc. All Rights Reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// 3eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch// Use of this source code is governed by a BSD-style license 4eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch// that can be found in the COPYING file in the root of the source 5eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch// tree. An additional intellectual property rights grant can be found 6eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch// in the file PATENTS. All contributing project authors may 7eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch// be found in the AUTHORS file in the root of the source tree. 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// ----------------------------------------------------------------------------- 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// WebP encoder: internal header. 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Author: Skal (pascal.massimino@gmail.com) 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef WEBP_ENC_VP8ENCI_H_ 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define WEBP_ENC_VP8ENCI_H_ 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <string.h> // for memcpy() 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "../webp/encode.h" 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "../dsp/dsp.h" 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "../utils/bit_writer.h" 212a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "../utils/thread.h" 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 235d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)#ifdef __cplusplus 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern "C" { 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)//------------------------------------------------------------------------------ 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Various defines and enums 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// version numbers 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define ENC_MAJ_VERSION 0 325d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)#define ENC_MIN_VERSION 4 335f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles)#define ENC_REV_VERSION 1 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// intra prediction modes 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)enum { B_DC_PRED = 0, // 4x4 modes 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) B_TM_PRED = 1, 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) B_VE_PRED = 2, 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) B_HE_PRED = 3, 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) B_RD_PRED = 4, 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) B_VR_PRED = 5, 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) B_LD_PRED = 6, 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) B_VL_PRED = 7, 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) B_HD_PRED = 8, 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) B_HU_PRED = 9, 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NUM_BMODES = B_HU_PRED + 1 - B_DC_PRED, // = 10 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Luma16 or UV modes 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DC_PRED = B_DC_PRED, V_PRED = B_VE_PRED, 502a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) H_PRED = B_HE_PRED, TM_PRED = B_TM_PRED, 512a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) NUM_PRED_MODES = 4 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) }; 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)enum { NUM_MB_SEGMENTS = 4, 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) MAX_NUM_PARTITIONS = 8, 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NUM_TYPES = 4, // 0: i16-AC, 1: i16-DC, 2:chroma-AC, 3:i4-AC 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NUM_BANDS = 8, 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NUM_CTX = 3, 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NUM_PROBAS = 11, 60c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) MAX_LF_LEVELS = 64, // Maximum loop filter level 61c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) MAX_VARIABLE_LEVEL = 67, // last (inclusive) level with variable cost 62c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) MAX_LEVEL = 2047 // max level (note: max codable is 2047 + 67) 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) }; 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 652a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)typedef enum { // Rate-distortion optimization levels 662a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) RD_OPT_NONE = 0, // no rd-opt 672a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) RD_OPT_BASIC = 1, // basic scoring (no trellis) 682a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) RD_OPT_TRELLIS = 2, // perform trellis-quant on the final decision only 692a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) RD_OPT_TRELLIS_ALL = 3 // trellis-quant for every scoring (much slower) 702a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} VP8RDLevel; 712a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// YUV-cache parameters. Cache is 16-pixels wide. 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// The original or reconstructed samples can be accessed using VP8Scan[] 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// The predicted blocks can be accessed using offsets to yuv_p_ and 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// the arrays VP8*ModeOffsets[]; 765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// +----+ YUV Samples area. See VP8Scan[] for accessing the blocks. 775d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)// Y_OFF |YYYY| <- original samples ('yuv_in_') 785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// |YYYY| 795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// |YYYY| 805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// |YYYY| 815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// U_OFF |UUVV| V_OFF (=U_OFF + 8) 825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// |UUVV| 835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// +----+ 845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Y_OFF |YYYY| <- compressed/decoded samples ('yuv_out_') 855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// |YYYY| There are two buffers like this ('yuv_out_'/'yuv_out2_') 865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// |YYYY| 875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// |YYYY| 885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// U_OFF |UUVV| V_OFF 895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// |UUVV| 905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// x2 (for yuv_out2_) 915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// +----+ Prediction area ('yuv_p_', size = PRED_SIZE) 925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// I16DC16 |YYYY| Intra16 predictions (16x16 block each) 935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// |YYYY| 945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// |YYYY| 955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// |YYYY| 965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// I16TM16 |YYYY| 975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// |YYYY| 985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// |YYYY| 995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// |YYYY| 1005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// I16VE16 |YYYY| 1015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// |YYYY| 1025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// |YYYY| 1035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// |YYYY| 1045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// I16HE16 |YYYY| 1055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// |YYYY| 1065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// |YYYY| 1075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// |YYYY| 1085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// +----+ Chroma U/V predictions (16x8 block each) 1095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// C8DC8 |UUVV| 1105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// |UUVV| 1115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// C8TM8 |UUVV| 1125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// |UUVV| 1135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// C8VE8 |UUVV| 1145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// |UUVV| 1155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// C8HE8 |UUVV| 1165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// |UUVV| 1175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// +----+ Intra 4x4 predictions (4x4 block each) 1185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// |YYYY| I4DC4 I4TM4 I4VE4 I4HE4 1195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// |YYYY| I4RD4 I4VR4 I4LD4 I4VL4 1205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// |YY..| I4HD4 I4HU4 I4TMP 1215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// +----+ 1225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define BPS 16 // this is the common stride 1235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define Y_SIZE (BPS * 16) 1245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define UV_SIZE (BPS * 8) 1255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define YUV_SIZE (Y_SIZE + UV_SIZE) 1265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PRED_SIZE (6 * 16 * BPS + 12 * BPS) 1275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define Y_OFF (0) 1285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define U_OFF (Y_SIZE) 1295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define V_OFF (U_OFF + 8) 1305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define ALIGN_CST 15 1315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define DO_ALIGN(PTR) ((uintptr_t)((PTR) + ALIGN_CST) & ~ALIGN_CST) 1325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1335f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles)extern const int VP8Scan[16]; // in quant.c 1345f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles)extern const int VP8UVModeOffsets[4]; // in analyze.c 1355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern const int VP8I16ModeOffsets[4]; 1365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern const int VP8I4ModeOffsets[NUM_BMODES]; 1375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Layout of prediction blocks 1395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// intra 16x16 1405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define I16DC16 (0 * 16 * BPS) 1415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define I16TM16 (1 * 16 * BPS) 1425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define I16VE16 (2 * 16 * BPS) 1435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define I16HE16 (3 * 16 * BPS) 1445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// chroma 8x8, two U/V blocks side by side (hence: 16x8 each) 1455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define C8DC8 (4 * 16 * BPS) 1465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define C8TM8 (4 * 16 * BPS + 8 * BPS) 1475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define C8VE8 (5 * 16 * BPS) 1485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define C8HE8 (5 * 16 * BPS + 8 * BPS) 1495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// intra 4x4 1505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define I4DC4 (6 * 16 * BPS + 0) 1515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define I4TM4 (6 * 16 * BPS + 4) 1525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define I4VE4 (6 * 16 * BPS + 8) 1535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define I4HE4 (6 * 16 * BPS + 12) 1545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define I4RD4 (6 * 16 * BPS + 4 * BPS + 0) 1555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define I4VR4 (6 * 16 * BPS + 4 * BPS + 4) 1565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define I4LD4 (6 * 16 * BPS + 4 * BPS + 8) 1575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define I4VL4 (6 * 16 * BPS + 4 * BPS + 12) 1585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define I4HD4 (6 * 16 * BPS + 8 * BPS + 0) 1595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define I4HU4 (6 * 16 * BPS + 8 * BPS + 4) 1605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define I4TMP (6 * 16 * BPS + 8 * BPS + 8) 1615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef int64_t score_t; // type used for scores, rate, distortion 1635f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles)// Note that MAX_COST is not the maximum allowed by sizeof(score_t), 1645f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles)// in order to allow overflowing computations. 1655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define MAX_COST ((score_t)0x7fffffffffffffLL) 1665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define QFIX 17 1685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define BIAS(b) ((b) << (QFIX - 8)) 1695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Fun fact: this is the _only_ line where we're actually being lossy and 1705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// discarding bits. 1715f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles)static WEBP_INLINE int QUANTDIV(uint32_t n, uint32_t iQ, uint32_t B) { 1725f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) return (int)((n * iQ + B) >> QFIX); 1735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1742a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 1752a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// size of histogram used by CollectHistogram. 1762a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#define MAX_COEFF_THRESH 31 1772a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)typedef struct VP8Histogram VP8Histogram; 1782a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)struct VP8Histogram { 1792a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // TODO(skal): we only need to store the max_value and last_non_zero actually. 1802a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) int distribution[MAX_COEFF_THRESH + 1]; 1812a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)}; 1822a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 1832a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// Uncomment the following to remove token-buffer code: 1842a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// #define DISABLE_TOKEN_BUFFER 1855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)//------------------------------------------------------------------------------ 1875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Headers 1885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1892a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)typedef uint32_t proba_t; // 16b + 16b 1905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef uint8_t ProbaArray[NUM_CTX][NUM_PROBAS]; 1912a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)typedef proba_t StatsArray[NUM_CTX][NUM_PROBAS]; 1925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef uint16_t CostArray[NUM_CTX][MAX_VARIABLE_LEVEL + 1]; 1935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef double LFStats[NUM_MB_SEGMENTS][MAX_LF_LEVELS]; // filter stats 1945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef struct VP8Encoder VP8Encoder; 1965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// segment features 1985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef struct { 1995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int num_segments_; // Actual number of segments. 1 segment only = unused. 2005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int update_map_; // whether to update the segment map or not. 2015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // must be 0 if there's only 1 segment. 2025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int size_; // bit-cost for transmitting the segment map 2035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} VP8SegmentHeader; 2045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Struct collecting all frame-persistent probabilities. 2065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef struct { 2075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) uint8_t segments_[3]; // probabilities for segment tree 2085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) uint8_t skip_proba_; // final probability of being skipped. 2095f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) ProbaArray coeffs_[NUM_TYPES][NUM_BANDS]; // 1056 bytes 2102a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) StatsArray stats_[NUM_TYPES][NUM_BANDS]; // 4224 bytes 2115f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) CostArray level_cost_[NUM_TYPES][NUM_BANDS]; // 13056 bytes 2122a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) int dirty_; // if true, need to call VP8CalculateLevelCosts() 2135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int use_skip_proba_; // Note: we always use skip_proba for now. 2145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int nb_skip_; // number of skipped blocks 2155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} VP8Proba; 2165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Filter parameters. Not actually used in the code (we don't perform 2185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// the in-loop filtering), but filled from user's config 2195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef struct { 2205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int simple_; // filtering type: 0=complex, 1=simple 2215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int level_; // base filter level [0..63] 2225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int sharpness_; // [0..7] 2235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int i4x4_lf_delta_; // delta filter level for i4x4 relative to i16x16 2245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} VP8FilterHeader; 2255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)//------------------------------------------------------------------------------ 2275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Informations about the macroblocks. 2285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef struct { 2305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // block type 2315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) unsigned int type_:2; // 0=i4x4, 1=i16x16 2325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) unsigned int uv_mode_:2; 2335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) unsigned int skip_:1; 2345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) unsigned int segment_:2; 2355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) uint8_t alpha_; // quantization-susceptibility 2365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} VP8MBInfo; 2375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef struct VP8Matrix { 2395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) uint16_t q_[16]; // quantizer steps 2405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) uint16_t iq_[16]; // reciprocals, fixed point. 2415f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) uint32_t bias_[16]; // rounding bias 2425f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) uint32_t zthresh_[16]; // value below which a coefficient is zeroed 2435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) uint16_t sharpen_[16]; // frequency boosters for slight sharpening 2445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} VP8Matrix; 2455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef struct { 2475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) VP8Matrix y1_, y2_, uv_; // quantization matrices 2485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int alpha_; // quant-susceptibility, range [-127,127]. Zero is neutral. 2495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Lower values indicate a lower risk of blurriness. 2505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int beta_; // filter-susceptibility, range [0,255]. 2515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int quant_; // final segment quantizer. 2525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int fstrength_; // final in-loop filtering strength 2535d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) int max_edge_; // max edge delta (for filtering strength) 2545d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) int min_disto_; // minimum distortion required to trigger filtering record 2555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // reactivities 2565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int lambda_i16_, lambda_i4_, lambda_uv_; 2575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int lambda_mode_, lambda_trellis_, tlambda_; 2585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int lambda_trellis_i16_, lambda_trellis_i4_, lambda_trellis_uv_; 2595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} VP8SegmentInfo; 2605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2615d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)// Handy transient struct to accumulate score and info during RD-optimization 2625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// and mode evaluation. 2635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef struct { 2645d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) score_t D, SD; // Distortion, spectral distortion 2655d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) score_t H, R, score; // header bits, rate, score. 2665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int16_t y_dc_levels[16]; // Quantized levels for luma-DC, luma-AC, chroma. 2675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int16_t y_ac_levels[16][16]; 2685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int16_t uv_levels[4 + 4][16]; 2695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int mode_i16; // mode number for intra16 prediction 2705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) uint8_t modes_i4[16]; // mode numbers for intra4 predictions 2715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int mode_uv; // mode number of chroma prediction 2725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) uint32_t nz; // non-zero blocks 2735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} VP8ModeScore; 2745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Iterator structure to iterate through macroblocks, pointing to the 2765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// right neighbouring data (samples, predictions, contexts, ...) 2775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef struct { 2785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int x_, y_; // current macroblock 2795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int y_stride_, uv_stride_; // respective strides 2805d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) uint8_t* yuv_in_; // input samples 2815d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) uint8_t* yuv_out_; // output samples 2825d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) uint8_t* yuv_out2_; // secondary buffer swapped with yuv_out_. 2835d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) uint8_t* yuv_p_; // scratch buffer for prediction 2845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) VP8Encoder* enc_; // back-pointer 2855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) VP8MBInfo* mb_; // current macroblock 2865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) VP8BitWriter* bw_; // current bit-writer 2875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) uint8_t* preds_; // intra mode predictors (4x4 blocks) 2885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) uint32_t* nz_; // non-zero pattern 2895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) uint8_t i4_boundary_[37]; // 32+5 boundary samples needed by intra4x4 2905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) uint8_t* i4_top_; // pointer to the current top boundary sample 2915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int i4_; // current intra4x4 mode being tested 2925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int top_nz_[9]; // top-non-zero context. 2935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int left_nz_[9]; // left-non-zero. left_nz[8] is independent. 2945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) uint64_t bit_count_[4][3]; // bit counters for coded levels. 2955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) uint64_t luma_bits_; // macroblock bit-cost for luma 2965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) uint64_t uv_bits_; // macroblock bit-cost for chroma 2975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) LFStats* lf_stats_; // filter stats (borrowed from enc_) 2985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int do_trellis_; // if true, perform extra level optimisation 2995d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) int count_down_; // number of mb still to be processed 3005d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) int count_down0_; // starting counter value (for progress) 3015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int percent0_; // saved initial progress percent 3025d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 3035d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) uint8_t* y_left_; // left luma samples (addressable from index -1 to 15). 3045d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) uint8_t* u_left_; // left u samples (addressable from index -1 to 7) 3055d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) uint8_t* v_left_; // left v samples (addressable from index -1 to 7) 3065d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 3075d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) uint8_t* y_top_; // top luma samples at position 'x_' 3085d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) uint8_t* uv_top_; // top u/v samples at position 'x_', packed as 16 bytes 3095d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 3105d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // memory for storing y/u/v_left_ and yuv_in_/out_* 3115d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) uint8_t yuv_left_mem_[17 + 16 + 16 + 8 + ALIGN_CST]; // memory for *_left_ 3125d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) uint8_t yuv_mem_[3 * YUV_SIZE + PRED_SIZE + ALIGN_CST]; // memory for yuv_* 3135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} VP8EncIterator; 3145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // in iterator.c 3165d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)// must be called first 3175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void VP8IteratorInit(VP8Encoder* const enc, VP8EncIterator* const it); 3185d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)// restart a scan 3195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void VP8IteratorReset(VP8EncIterator* const it); 3205d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)// reset iterator position to row 'y' 3215d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)void VP8IteratorSetRow(VP8EncIterator* const it, int y); 3225d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)// set count down (=number of iterations to go) 3235d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)void VP8IteratorSetCountDown(VP8EncIterator* const it, int count_down); 3245d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)// return true if iteration is finished 3255d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)int VP8IteratorIsDone(const VP8EncIterator* const it); 3265d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)// Import uncompressed samples from source. 3275d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)// If tmp_32 is not NULL, import boundary samples too. 3285d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)// tmp_32 is a 32-bytes scratch buffer that must be aligned in memory. 3295d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)void VP8IteratorImport(VP8EncIterator* const it, uint8_t* tmp_32); 3305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// export decimated samples 3315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void VP8IteratorExport(const VP8EncIterator* const it); 3325d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)// go to next macroblock. Returns false if not finished. 3335d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)int VP8IteratorNext(VP8EncIterator* const it); 3345d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)// save the yuv_out_ boundary values to top_/left_ arrays for next iterations. 3355d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)void VP8IteratorSaveBoundary(VP8EncIterator* const it); 3365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Report progression based on macroblock rows. Return 0 for user-abort request. 3375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int VP8IteratorProgress(const VP8EncIterator* const it, 3385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int final_delta_percent); 3395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Intra4x4 iterations 3405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void VP8IteratorStartI4(VP8EncIterator* const it); 3415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// returns true if not done. 3425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int VP8IteratorRotateI4(VP8EncIterator* const it, 3435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const uint8_t* const yuv_out); 3445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Non-zero context setup/teardown 3465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void VP8IteratorNzToBytes(VP8EncIterator* const it); 3475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void VP8IteratorBytesToNz(VP8EncIterator* const it); 3485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Helper functions to set mode properties 3505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void VP8SetIntra16Mode(const VP8EncIterator* const it, int mode); 3515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void VP8SetIntra4Mode(const VP8EncIterator* const it, const uint8_t* modes); 3525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void VP8SetIntraUVMode(const VP8EncIterator* const it, int mode); 3535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void VP8SetSkip(const VP8EncIterator* const it, int skip); 3545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void VP8SetSegment(const VP8EncIterator* const it, int segment); 3555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)//------------------------------------------------------------------------------ 3575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Paginated token buffer 3585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3592a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)typedef struct VP8Tokens VP8Tokens; // struct details in token.c 3605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef struct { 3622a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#if !defined(DISABLE_TOKEN_BUFFER) 3632a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) VP8Tokens* pages_; // first page 3642a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) VP8Tokens** last_page_; // last page 3652a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) uint16_t* tokens_; // set to (*last_page_)->tokens_ 3665f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) int left_; // how many free tokens left before the page is full 3675f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) int page_size_; // number of tokens per page 3682a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#endif 3692a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) int error_; // true in case of malloc error 3705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} VP8TBuffer; 3715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3725f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles)// initialize an empty buffer 3735f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles)void VP8TBufferInit(VP8TBuffer* const b, int page_size); 3742a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)void VP8TBufferClear(VP8TBuffer* const b); // de-allocate pages memory 3752a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 3762a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#if !defined(DISABLE_TOKEN_BUFFER) 3775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3782a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// Finalizes bitstream when probabilities are known. 3792a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// Deletes the allocated token memory if final_pass is true. 3802a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)int VP8EmitTokens(VP8TBuffer* const b, VP8BitWriter* const bw, 3812a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const uint8_t* const probas, int final_pass); 3822a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 3832a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// record the coding of coefficients without knowing the probabilities yet 3842a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)int VP8RecordCoeffTokens(int ctx, int coeff_type, int first, int last, 3852a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const int16_t* const coeffs, 3862a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) VP8TBuffer* const tokens); 3872a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 3885d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)// Estimate the final coded size given a set of 'probas'. 3895d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)size_t VP8EstimateTokenSize(VP8TBuffer* const b, const uint8_t* const probas); 3905d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 3912a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// unused for now 3922a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)void VP8TokenToStats(const VP8TBuffer* const b, proba_t* const stats); 3932a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 3942a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#endif // !DISABLE_TOKEN_BUFFER 3955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)//------------------------------------------------------------------------------ 3975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// VP8Encoder 3985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)struct VP8Encoder { 4005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const WebPConfig* config_; // user configuration and parameters 4015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) WebPPicture* pic_; // input / output picture 4025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // headers 4045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) VP8FilterHeader filter_hdr_; // filtering information 4055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) VP8SegmentHeader segment_hdr_; // segment information 4065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int profile_; // VP8's profile, deduced from Config. 4085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // dimension, in macroblock units. 4105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int mb_w_, mb_h_; 4115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int preds_w_; // stride of the *preds_ prediction plane (=4*mb_w + 1) 4125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // number of partitions (1, 2, 4 or 8 = MAX_NUM_PARTITIONS) 4145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int num_parts_; 4155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // per-partition boolean decoders. 4175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) VP8BitWriter bw_; // part0 4185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) VP8BitWriter parts_[MAX_NUM_PARTITIONS]; // token partitions 4192a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) VP8TBuffer tokens_; // token buffer 4205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int percent_; // for progress 4225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // transparency blob 4245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int has_alpha_; 4255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) uint8_t* alpha_data_; // non-NULL if transparency is present 4265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) uint32_t alpha_data_size_; 4272a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) WebPWorker alpha_worker_; 4285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // quantization info (one set of DC/AC dequant factor per segment) 4305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) VP8SegmentInfo dqm_[NUM_MB_SEGMENTS]; 4315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int base_quant_; // nominal quantizer value. Only used 4325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // for relative coding of segments' quant. 4332a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) int alpha_; // global susceptibility (<=> complexity) 4345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int uv_alpha_; // U/V quantization susceptibility 4355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // global offset of quantizers, shared by all segments 4365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int dq_y1_dc_; 4375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int dq_y2_dc_, dq_y2_ac_; 4385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int dq_uv_dc_, dq_uv_ac_; 4395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // probabilities and statistics 4415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) VP8Proba proba_; 4425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) uint64_t sse_[4]; // sum of Y/U/V/A squared errors for all macroblocks 4435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) uint64_t sse_count_; // pixel count for the sse_[] stats 4445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int coded_size_; 4455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int residual_bytes_[3][4]; 4465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int block_count_[3]; 4475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // quality/speed settings 4492a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) int method_; // 0=fastest, 6=best/slowest. 4502a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) VP8RDLevel rd_opt_level_; // Deduced from method_. 4512a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) int max_i4_header_bits_; // partition #0 safeness factor 4522a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) int thread_level_; // derived from config->thread_level 4532a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) int do_search_; // derived from config->target_XXX 4542a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) int use_tokens_; // if true, use token buffer 4555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Memory 4575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) VP8MBInfo* mb_info_; // contextual macroblock infos (mb_w_ + 1) 4585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) uint8_t* preds_; // predictions modes: (4*mb_w+1) * (4*mb_h+1) 4595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) uint32_t* nz_; // non-zero bit context: mb_w+1 4605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) uint8_t *y_top_; // top luma samples. 4615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) uint8_t *uv_top_; // top u/v samples. 4625d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // U and V are packed into 16 bytes (8 U + 8 V) 4635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) LFStats *lf_stats_; // autofilter stats (if NULL, autofilter is off) 4645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 4655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)//------------------------------------------------------------------------------ 4675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// internal functions. Not public. 4685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // in tree.c 4705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern const uint8_t VP8CoeffsProba0[NUM_TYPES][NUM_BANDS][NUM_CTX][NUM_PROBAS]; 4715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern const uint8_t 4725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) VP8CoeffsUpdateProba[NUM_TYPES][NUM_BANDS][NUM_CTX][NUM_PROBAS]; 4735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Reset the token probabilities to their initial (default) values 4745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void VP8DefaultProbas(VP8Encoder* const enc); 4755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Write the token probabilities 4765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void VP8WriteProbas(VP8BitWriter* const bw, const VP8Proba* const probas); 4775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Writes the partition #0 modes (that is: all intra modes) 4785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void VP8CodeIntraModes(VP8Encoder* const enc); 4795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // in syntax.c 4815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Generates the final bitstream by coding the partition0 and headers, 4825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// and appending an assembly of all the pre-coded token partitions. 4835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Return true if everything is ok. 4845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int VP8EncWrite(VP8Encoder* const enc); 4855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Release memory allocated for bit-writing in VP8EncLoop & seq. 4865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void VP8EncFreeBitWriters(VP8Encoder* const enc); 4875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // in frame.c 4895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern const uint8_t VP8EncBands[16 + 1]; 4902a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)extern const uint8_t VP8Cat3[]; 4912a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)extern const uint8_t VP8Cat4[]; 4922a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)extern const uint8_t VP8Cat5[]; 4932a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)extern const uint8_t VP8Cat6[]; 4942a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 4955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Form all the four Intra16x16 predictions in the yuv_p_ cache 4965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void VP8MakeLuma16Preds(const VP8EncIterator* const it); 4975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Form all the four Chroma8x8 predictions in the yuv_p_ cache 4985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void VP8MakeChroma8Preds(const VP8EncIterator* const it); 4995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Form all the ten Intra4x4 predictions in the yuv_p_ cache 5005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// for the 4x4 block it->i4_ 5015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void VP8MakeIntra4Preds(const VP8EncIterator* const it); 5025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Rate calculation 5035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int VP8GetCostLuma16(VP8EncIterator* const it, const VP8ModeScore* const rd); 5045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int VP8GetCostLuma4(VP8EncIterator* const it, const int16_t levels[16]); 5055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int VP8GetCostUV(VP8EncIterator* const it, const VP8ModeScore* const rd); 5062a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// Main coding calls 5075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int VP8EncLoop(VP8Encoder* const enc); 5082a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)int VP8EncTokenLoop(VP8Encoder* const enc); 5095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // in webpenc.c 5115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Assign an error code to a picture. Return false for convenience. 5125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int WebPEncodingSetError(const WebPPicture* const pic, WebPEncodingError error); 5135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int WebPReportProgress(const WebPPicture* const pic, 5145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int percent, int* const percent_store); 5155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // in analysis.c 5175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Main analysis loop. Decides the segmentations and complexity. 5185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Assigns a first guess for Intra16 and uvmode_ prediction modes. 5195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int VP8EncAnalyze(VP8Encoder* const enc); 5205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // in quant.c 5225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Sets up segment's quantization values, base_quant_ and filter strengths. 5235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void VP8SetSegmentParams(VP8Encoder* const enc, float quality); 5245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Pick best modes and fills the levels. Returns true if skipped. 5252a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)int VP8Decimate(VP8EncIterator* const it, VP8ModeScore* const rd, 5262a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) VP8RDLevel rd_opt); 5275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // in alpha.c 5295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void VP8EncInitAlpha(VP8Encoder* const enc); // initialize alpha compression 5302a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)int VP8EncStartAlpha(VP8Encoder* const enc); // start alpha coding process 5315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int VP8EncFinishAlpha(VP8Encoder* const enc); // finalize compressed data 5322a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)int VP8EncDeleteAlpha(VP8Encoder* const enc); // delete compressed data 5335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // in filter.c 5355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// SSIM utils 5375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef struct { 5385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) double w, xm, ym, xxm, xym, yym; 5395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} DistoStats; 5405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void VP8SSIMAddStats(const DistoStats* const src, DistoStats* const dst); 5415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void VP8SSIMAccumulatePlane(const uint8_t* src1, int stride1, 5425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const uint8_t* src2, int stride2, 5435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int W, int H, DistoStats* const stats); 5445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)double VP8SSIMGet(const DistoStats* const stats); 5455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)double VP8SSIMGetSquaredError(const DistoStats* const stats); 5465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// autofilter 5485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void VP8InitFilter(VP8EncIterator* const it); 5495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void VP8StoreFilterStats(VP8EncIterator* const it); 5505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void VP8AdjustFilterStrength(VP8EncIterator* const it); 5515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5525d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)// returns the approximate filtering strength needed to smooth a edge 5535d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)// step of 'delta', given a sharpness parameter 'sharpness'. 5545d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)int VP8FilterStrengthFromDelta(int sharpness, int delta); 5555d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 5565f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) // misc utils for picture_*.c: 5575f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) 5585f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles)// Remove reference to the ARGB/YUVA buffer (doesn't free anything). 5595f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles)void WebPPictureResetBuffers(WebPPicture* const picture); 5605f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) 5615f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles)// Allocates ARGB buffer of given dimension (previous one is always free'd). 5625f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles)// Preserves the YUV(A) buffer. Returns false in case of error (invalid param, 5635f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles)// out-of-memory). 5645f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles)int WebPPictureAllocARGB(WebPPicture* const picture, int width, int height); 5655f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) 5665f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles)// Allocates YUVA buffer of given dimension (previous one is always free'd). 5675f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles)// Uses picture->csp to determine whether an alpha buffer is needed. 5685f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles)// Preserves the ARGB buffer. 5695f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles)// Returns false in case of error (invalid param, out-of-memory). 5705f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles)int WebPPictureAllocYUVA(WebPPicture* const picture, int width, int height); 5715f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) 5725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)//------------------------------------------------------------------------------ 5735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5745f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles)#if WEBP_ENCODER_ABI_VERSION <= 0x0202 5755f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles)void WebPMemoryWriterClear(WebPMemoryWriter* writer); 5765f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles)#endif 5775f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) 5785d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)#ifdef __cplusplus 5795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // extern "C" 5805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 5815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif /* WEBP_ENC_VP8ENCI_H_ */ 583