From 043103fe6a1168729abf74dd56b8982ce54eea43 Mon Sep 17 00:00:00 2001 From: volzhs Date: Tue, 12 Dec 2017 02:11:11 +0900 Subject: Update libwebp to 0.6.1 * lossless performance and compression improvements + a new 'cruncher' mode (-m 6 -q 100) * ARM performance improvements with clang (15-20% w/ndk r15c) * webp-js: emscripten/webassembly based javascript decoder * miscellaneous bug & build fixes --- thirdparty/libwebp/src/utils/quant_levels_utils.h | 36 +++++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 thirdparty/libwebp/src/utils/quant_levels_utils.h (limited to 'thirdparty/libwebp/src/utils/quant_levels_utils.h') diff --git a/thirdparty/libwebp/src/utils/quant_levels_utils.h b/thirdparty/libwebp/src/utils/quant_levels_utils.h new file mode 100644 index 0000000000..75df2ba6a4 --- /dev/null +++ b/thirdparty/libwebp/src/utils/quant_levels_utils.h @@ -0,0 +1,36 @@ +// Copyright 2011 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. +// ----------------------------------------------------------------------------- +// +// Alpha plane quantization utility +// +// Author: Vikas Arora (vikasa@google.com) + +#ifndef WEBP_UTILS_QUANT_LEVELS_UTILS_H_ +#define WEBP_UTILS_QUANT_LEVELS_UTILS_H_ + +#include + +#include "src/webp/types.h" + +#ifdef __cplusplus +extern "C" { +#endif + +// Replace the input 'data' of size 'width'x'height' with 'num-levels' +// quantized values. If not NULL, 'sse' will contain the sum of squared error. +// Valid range for 'num_levels' is [2, 256]. +// Returns false in case of error (data is NULL, or parameters are invalid). +int QuantizeLevels(uint8_t* const data, int width, int height, int num_levels, + uint64_t* const sse); + +#ifdef __cplusplus +} // extern "C" +#endif + +#endif /* WEBP_UTILS_QUANT_LEVELS_UTILS_H_ */ -- cgit v1.2.3