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diff --git a/src/main/jni/libwebp/utils/rescaler.h b/src/main/jni/libwebp/utils/rescaler.h
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-// 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.
-// -----------------------------------------------------------------------------
-//
-// Rescaling functions
-//
-// Author: Skal (pascal.massimino@gmail.com)
-
-#ifndef WEBP_UTILS_RESCALER_H_
-#define WEBP_UTILS_RESCALER_H_
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#include "../webp/types.h"
-
-// Structure used for on-the-fly rescaling
-typedef struct {
- int x_expand; // true if we're expanding in the x direction
- int num_channels; // bytes to jump between pixels
- int fy_scale, fx_scale; // fixed-point scaling factor
- int64_t fxy_scale; // ''
- // we need hpel-precise add/sub increments, for the downsampled U/V planes.
- int y_accum; // vertical accumulator
- int y_add, y_sub; // vertical increments (add ~= src, sub ~= dst)
- int x_add, x_sub; // horizontal increments (add ~= src, sub ~= dst)
- int src_width, src_height; // source dimensions
- int dst_width, dst_height; // destination dimensions
- uint8_t* dst;
- int dst_stride;
- int32_t* irow, *frow; // work buffer
-} WebPRescaler;
-
-// Initialize a rescaler given scratch area 'work' and dimensions of src & dst.
-void WebPRescalerInit(WebPRescaler* const rescaler,
- int src_width, int src_height,
- uint8_t* const dst,
- int dst_width, int dst_height, int dst_stride,
- int num_channels,
- int x_add, int x_sub,
- int y_add, int y_sub,
- int32_t* const work);
-
-// Returns the number of input lines needed next to produce one output line,
-// considering that the maximum available input lines are 'max_num_lines'.
-int WebPRescaleNeededLines(const WebPRescaler* const rescaler,
- int max_num_lines);
-
-// Import multiple rows over all channels, until at least one row is ready to
-// be exported. Returns the actual number of lines that were imported.
-int WebPRescalerImport(WebPRescaler* const rescaler, int num_rows,
- const uint8_t* src, int src_stride);
-
-// Import a row of data and save its contribution in the rescaler.
-// 'channel' denotes the channel number to be imported.
-extern void (*WebPRescalerImportRow)(WebPRescaler* const wrk,
- const uint8_t* const src, int channel);
-// Export one row (starting at x_out position) from rescaler.
-extern void (*WebPRescalerExportRow)(WebPRescaler* const wrk, int x_out);
-
-// Return true if there is pending output rows ready.
-static WEBP_INLINE
-int WebPRescalerHasPendingOutput(const WebPRescaler* const rescaler) {
- return (rescaler->y_accum <= 0);
-}
-
-// Export as many rows as possible. Return the numbers of rows written.
-int WebPRescalerExport(WebPRescaler* const rescaler);
-
-//------------------------------------------------------------------------------
-
-#ifdef __cplusplus
-} // extern "C"
-#endif
-
-#endif /* WEBP_UTILS_RESCALER_H_ */