godot/thirdparty/libwebp/src/enc/webp_enc.c

// Copyright 2011 Google Inc. All Rights Reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the COPYING file in the root of the source
// tree. An additional intellectual property rights grant can be found
// in the file PATENTS. All contributing project authors may
// be found in the AUTHORS file in the root of the source tree.
// -----------------------------------------------------------------------------
//
// WebP encoder: main entry point
//
// Author: Skal ([email protected])

#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>

#include "src/enc/cost_enc.h"
#include "src/enc/vp8i_enc.h"
#include "src/enc/vp8li_enc.h"
#include "src/utils/utils.h"

// #define PRINT_MEMORY_INFO

#ifdef PRINT_MEMORY_INFO
#include <stdio.h>
#endif

//------------------------------------------------------------------------------

int WebPGetEncoderVersion(void) { … }

//------------------------------------------------------------------------------
// VP8Encoder
//------------------------------------------------------------------------------

static void ResetSegmentHeader(VP8Encoder* const enc) { … }

static void ResetFilterHeader(VP8Encoder* const enc) { … }

static void ResetBoundaryPredictions(VP8Encoder* const enc) { … }

// Mapping from config->method_ to coding tools used.
//-------------------+---+---+---+---+---+---+---+
//   Method          | 0 | 1 | 2 | 3 |(4)| 5 | 6 |
//-------------------+---+---+---+---+---+---+---+
// fast probe        | x |   |   | x |   |   |   |
//-------------------+---+---+---+---+---+---+---+
// dynamic proba     | ~ | x | x | x | x | x | x |
//-------------------+---+---+---+---+---+---+---+
// fast mode analysis|[x]|[x]|   |   | x | x | x |
//-------------------+---+---+---+---+---+---+---+
// basic rd-opt      |   |   |   | x | x | x | x |
//-------------------+---+---+---+---+---+---+---+
// disto-refine i4/16| x | x | x |   |   |   |   |
//-------------------+---+---+---+---+---+---+---+
// disto-refine uv   |   | x | x |   |   |   |   |
//-------------------+---+---+---+---+---+---+---+
// rd-opt i4/16      |   |   | ~ | x | x | x | x |
//-------------------+---+---+---+---+---+---+---+
// token buffer (opt)|   |   |   | x | x | x | x |
//-------------------+---+---+---+---+---+---+---+
// Trellis           |   |   |   |   |   | x |Ful|
//-------------------+---+---+---+---+---+---+---+
// full-SNS          |   |   |   |   | x | x | x |
//-------------------+---+---+---+---+---+---+---+

static void MapConfigToTools(VP8Encoder* const enc) { … }

// Memory scaling with dimensions:
//  memory (bytes) ~= 2.25 * w + 0.0625 * w * h
//
// Typical memory footprint (614x440 picture)
//              encoder: 22111
//                 info: 4368
//                preds: 17741
//          top samples: 1263
//             non-zero: 175
//             lf-stats: 0
//                total: 45658
// Transient object sizes:
//       VP8EncIterator: 3360
//         VP8ModeScore: 872
//       VP8SegmentInfo: 732
//          VP8EncProba: 18352
//              LFStats: 2048
// Picture size (yuv): 419328

static VP8Encoder* InitVP8Encoder(const WebPConfig* const config,
                                  WebPPicture* const picture) { … }

static int DeleteVP8Encoder(VP8Encoder* enc) { … }

//------------------------------------------------------------------------------

#if !defined(WEBP_DISABLE_STATS)
static double GetPSNR(uint64_t err, uint64_t size) { … }

static void FinalizePSNR(const VP8Encoder* const enc) { … }
#endif  // !defined(WEBP_DISABLE_STATS)

static void StoreStats(VP8Encoder* const enc) { … }

int WebPEncodingSetError(const WebPPicture* const pic,
                         WebPEncodingError error) { … }

int WebPReportProgress(const WebPPicture* const pic,
                       int percent, int* const percent_store) { … }
//------------------------------------------------------------------------------

int WebPEncode(const WebPConfig* config, WebPPicture* pic) { … }