libwebp-0.6.0-rc1

third_party/libwebp/enc/vp8li_enc.h

 // 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_H_
 #define WEBP_ENC_VP8LI_H_
 
-#include "./backward_references.h"
-#include "./histogram.h"
-#include "../utils/bit_writer.h"
+#include "./backward_references_enc.h"
+#include "./histogram_enc.h"
+#include "../utils/bit_writer_utils.h"
 #include "../webp/encode.h"
 #include "../webp/format_constants.h"
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
+// maximum value of transform_bits_ in VP8LEncoder.
+#define MAX_TRANSFORM_BITS 6
+
 typedef struct {
   const WebPConfig* config_;      // user configuration and parameters
   const WebPPicture* pic_;        // input picture.
 
   uint32_t* argb_;                // Transformed argb image data.
   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_;
+  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];
 
@@ skipping 13 matching lines @@
 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.
 WebPEncodingError VP8LEncodeStream(const WebPConfig* const config,
                                    const WebPPicture* const picture,
                                    VP8LBitWriter* const bw, int use_cache);
 
 //------------------------------------------------------------------------------
+// Image transforms in predictor.c.
+
+void 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);
+
+void VP8LColorSpaceTransform(int width, int height, int bits, int quality,
+                             uint32_t* const argb, uint32_t* image);
+
+//------------------------------------------------------------------------------
 
 #ifdef __cplusplus
 }    // extern "C"
 #endif
 
 #endif  /* WEBP_ENC_VP8LI_H_ */