1 // Copyright 2016 Google Inc. All Rights Reserved. 2 // 3 // Use of this source code is governed by a BSD-style license 4 // that can be found in the COPYING file in the root of the source 5 // tree. An additional intellectual property rights grant can be found 6 // in the file PATENTS. All contributing project authors may 7 // be found in the AUTHORS file in the root of the source tree. 8 // ----------------------------------------------------------------------------- 9 // 10 // Internal header for animation related functions. 11 // 12 // Author: Hui Su (huisu@google.com) 13 14 #ifndef WEBP_MUX_ANIMI_H_ 15 #define WEBP_MUX_ANIMI_H_ 16 17 #include "src/webp/mux.h" 18 19 #ifdef __cplusplus 20 extern "C" { 21 #endif 22 23 // Picks the optimal rectangle between two pictures, starting with initial 24 // values of offsets and dimensions that are passed in. The initial 25 // values will be clipped, if necessary, to make sure the rectangle is 26 // within the canvas. "use_argb" must be true for both pictures. 27 // Parameters: 28 // prev_canvas, curr_canvas - (in) two input pictures to compare. 29 // is_lossless, quality - (in) encoding settings. 30 // x_offset, y_offset, width, height - (in/out) rectangle between the two 31 // input pictures. 32 // Returns true on success. 33 int WebPAnimEncoderRefineRect( 34 const struct WebPPicture* const prev_canvas, 35 const struct WebPPicture* const curr_canvas, 36 int is_lossless, float quality, int* const x_offset, int* const y_offset, 37 int* const width, int* const height); 38 39 #ifdef __cplusplus 40 } // extern "C" 41 #endif 42 43 #endif // WEBP_MUX_ANIMI_H_ 44