mirror of
https://github.com/webmproject/libwebp.git
synced 2025-07-17 06:19:54 +02:00
5cf7792e40
-> split libraries further into decoder / encoder -> add libwebpdecoder.a in Makefile.unix -> make dwebp link against libwebpdecoder.a in Makefile.unix also: in makefile.unix, pass EXTRA_FLAGS to LDFLAGS too (otherwise, -m32 wouldn't work, e.g.) Change-Id: Ief3da02a729dd86bbaf949ed048836716941657f
35 lines
1.1 KiB
C
35 lines
1.1 KiB
C
// Copyright 2011 Google Inc. All Rights Reserved.
|
|
//
|
|
// This code is licensed under the same terms as WebM:
|
|
// Software License Agreement: http://www.webmproject.org/license/software/
|
|
// Additional IP Rights Grant: http://www.webmproject.org/license/additional/
|
|
// -----------------------------------------------------------------------------
|
|
//
|
|
// Alpha plane quantization utility
|
|
//
|
|
// Author: Vikas Arora (vikasa@google.com)
|
|
|
|
#ifndef WEBP_UTILS_QUANT_LEVELS_H_
|
|
#define WEBP_UTILS_QUANT_LEVELS_H_
|
|
|
|
#include <stdlib.h>
|
|
|
|
#include "../webp/types.h"
|
|
|
|
#if defined(__cplusplus) || defined(c_plusplus)
|
|
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);
|
|
|
|
#if defined(__cplusplus) || defined(c_plusplus)
|
|
} // extern "C"
|
|
#endif
|
|
|
|
#endif /* WEBP_UTILS_QUANT_LEVELS_H_ */
|