44 lines
1.5 KiB
C++
44 lines
1.5 KiB
C++
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// Copyright 2016 Google Inc. All Rights Reserved.
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//
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// Use of this source code is governed by a BSD-style license
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// that can be found in the COPYING file in the root of the source
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// tree. An additional intellectual property rights grant can be found
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// in the file PATENTS. All contributing project authors may
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// be found in the AUTHORS file in the root of the source tree.
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// -----------------------------------------------------------------------------
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//
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// Internal header for animation related functions.
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//
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// Author: Hui Su (huisu@google.com)
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#ifndef WEBP_MUX_ANIMI_H_
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#define WEBP_MUX_ANIMI_H_
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#include "../webp/mux.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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// Picks the optimal rectangle between two pictures, starting with initial
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// values of offsets and dimensions that are passed in. The initial
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// values will be clipped, if necessary, to make sure the rectangle is
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// within the canvas. "use_argb" must be true for both pictures.
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// Parameters:
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// prev_canvas, curr_canvas - (in) two input pictures to compare.
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// is_lossless, quality - (in) encoding settings.
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// x_offset, y_offset, width, height - (in/out) rectangle between the two
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// input pictures.
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// Returns true on success.
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int WebPAnimEncoderRefineRect(
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const struct WebPPicture* const prev_canvas,
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const struct WebPPicture* const curr_canvas,
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int is_lossless, float quality, int* const x_offset, int* const y_offset,
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int* const width, int* const height);
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#endif /* WEBP_MUX_ANIMI_H_ */
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