mirror of
https://github.com/webmproject/libwebp.git
synced 2024-12-30 15:28:23 +01:00
48 lines
1.6 KiB
C
48 lines
1.6 KiB
C
|
// Copyright 2015 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.
|
||
|
|
// -----------------------------------------------------------------------------
|
||
|
|
//
|
||
|
|
// Utilities for animated images
|
||
|
|
|
||
|
|
#ifndef WEBP_EXAMPLES_ANIM_UTIL_H_
|
||
|
|
#define WEBP_EXAMPLES_ANIM_UTIL_H_
|
||
|
|
|
||
|
|
#ifdef HAVE_CONFIG_H
|
||
|
|
#include "webp/config.h"
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#include <vector>
|
||
|
|
|
||
|
|
#include "webp/types.h"
|
||
|
|
|
||
|
|
struct DecodedFrame {
|
||
|
|
std::vector<uint8_t> rgba; // Decoded and reconstructed full frame.
|
||
|
|
int duration; // Frame duration in milliseconds.
|
||
|
|
bool is_key_frame; // True if this frame is a key-frame.
|
||
|
|
};
|
||
|
|
|
||
|
|
struct AnimatedImage {
|
||
|
|
uint32_t canvas_width;
|
||
|
|
uint32_t canvas_height;
|
||
|
|
uint32_t bgcolor;
|
||
|
|
uint32_t loop_count;
|
||
|
|
std::vector<DecodedFrame> frames;
|
||
|
|
};
|
||
|
|
|
||
|
|
// Read animated image file into 'AnimatedImage' struct.
|
||
|
|
// If 'dump_frames' is true, dump frames to 'dump_folder'.
|
||
|
|
bool ReadAnimatedImage(const char filename[], AnimatedImage* const image,
|
||
|
|
bool dump_frames, const char dump_folder[]);
|
||
|
|
|
||
|
|
// Given two RGBA buffers, calculate max pixel difference and PSNR.
|
||
|
|
void GetDiffAndPSNR(const uint8_t rgba1[], const uint8_t rgba2[],
|
||
|
|
uint32_t width, uint32_t height, int* const max_diff,
|
||
|
|
double* const psnr);
|
||
|
|
|
||
|
|
#endif // WEBP_EXAMPLES_ANIM_UTIL_H_
|