Adding upstream version 115.7.0esr.upstream/115.7.0esr

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 126 insertions, 0 deletions

diff --git a/media/libwebp/src/enc/vp8li_enc.h b/media/libwebp/src/enc/vp8li_enc.h
new file mode 100644
index 0000000000..3d35e1612d
--- /dev/null
+++ b/media/libwebp/src/enc/vp8li_enc.h
@@ -0,0 +1,126 @@
+// Copyright 2012 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.
+// -----------------------------------------------------------------------------
+//
+// Lossless encoder: internal header.
+//
+// Author: Vikas Arora (vikaas.arora@gmail.com)
+
+#ifndef WEBP_ENC_VP8LI_ENC_H_
+#define WEBP_ENC_VP8LI_ENC_H_
+
+#ifdef HAVE_CONFIG_H
+#include "src/webp/config.h"
+#endif
+// Either WEBP_NEAR_LOSSLESS is defined as 0 in config.h when compiling to
+// disable near-lossless, or it is enabled by default.
+#ifndef WEBP_NEAR_LOSSLESS
+#define WEBP_NEAR_LOSSLESS 1
+#endif
+
+#include "src/enc/backward_references_enc.h"
+#include "src/enc/histogram_enc.h"
+#include "src/utils/bit_writer_utils.h"
+#include "src/webp/encode.h"
+#include "src/webp/format_constants.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+// maximum value of transform_bits_ in VP8LEncoder.
+#define MAX_TRANSFORM_BITS 6
+
+typedef enum {
+  kEncoderNone = 0,
+  kEncoderARGB,
+  kEncoderNearLossless,
+  kEncoderPalette
+} VP8LEncoderARGBContent;
+
+typedef struct {
+  const WebPConfig* config_;      // user configuration and parameters
+  const WebPPicture* pic_;        // input picture.
+
+  uint32_t* argb_;                       // Transformed argb image data.
+  VP8LEncoderARGBContent argb_content_;  // Content type of the argb buffer.
+  uint32_t* argb_scratch_;               // Scratch memory for argb rows
+                                         // (used for prediction).
+  uint32_t* transform_data_;             // Scratch memory for transform data.
+  uint32_t* transform_mem_;              // Currently allocated memory.
+  size_t    transform_mem_size_;         // Currently allocated memory size.
+
+  int       current_width_;       // Corresponds to packed image width.
+
+  // Encoding parameters derived from quality parameter.
+  int histo_bits_;
+  int transform_bits_;    // <= MAX_TRANSFORM_BITS.
+  int cache_bits_;        // If equal to 0, don't use color cache.
+
+  // Encoding parameters derived from image characteristics.
+  int use_cross_color_;
+  int use_subtract_green_;
+  int use_predict_;
+  int use_palette_;
+  int palette_size_;
+  uint32_t palette_[MAX_PALETTE_SIZE];
+  // Sorted version of palette_ for cache purposes.
+  uint32_t palette_sorted_[MAX_PALETTE_SIZE];
+
+  // Some 'scratch' (potentially large) objects.
+  struct VP8LBackwardRefs refs_[4];  // Backward Refs array for temporaries.
+  VP8LHashChain hash_chain_;         // HashChain data for constructing
+                                     // backward references.
+} VP8LEncoder;
+
+//------------------------------------------------------------------------------
+// internal functions. Not public.
+
+// Encodes the picture.
+// Returns 0 if config or picture is NULL or picture doesn't have valid argb
+// input.
+int VP8LEncodeImage(const WebPConfig* const config,
+                    const WebPPicture* const picture);
+
+// Encodes the main image stream using the supplied bit writer.
+// If 'use_cache' is false, disables the use of color cache.
+// Returns false in case of error (stored in picture->error_code).
+int VP8LEncodeStream(const WebPConfig* const config,
+                     const WebPPicture* const picture, VP8LBitWriter* const bw,
+                     int use_cache);
+
+#if (WEBP_NEAR_LOSSLESS == 1)
+// in near_lossless.c
+// Near lossless preprocessing in RGB color-space.
+int VP8ApplyNearLossless(const WebPPicture* const picture, int quality,
+                         uint32_t* const argb_dst);
+#endif
+
+//------------------------------------------------------------------------------
+// Image transforms in predictor.c.
+
+// pic and percent are for progress.
+// Returns false in case of error (stored in pic->error_code).
+int VP8LResidualImage(int width, int height, int bits, int low_effort,
+                      uint32_t* const argb, uint32_t* const argb_scratch,
+                      uint32_t* const image, int near_lossless, int exact,
+                      int used_subtract_green, const WebPPicture* const pic,
+                      int percent_range, int* const percent);
+
+int VP8LColorSpaceTransform(int width, int height, int bits, int quality,
+                            uint32_t* const argb, uint32_t* image,
+                            const WebPPicture* const pic, int percent_range,
+                            int* const percent);
+
+//------------------------------------------------------------------------------
+
+#ifdef __cplusplus
+}    // extern "C"
+#endif
+
+#endif  // WEBP_ENC_VP8LI_ENC_H_