You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
72 lines
1.7 KiB
72 lines
1.7 KiB
#ifndef SMXGif_h
|
|
#define SMXGif_h
|
|
|
|
#include <stdint.h>
|
|
#include <string>
|
|
#include <vector>
|
|
|
|
// This is a simple internal GIF decoder. It's only meant to be used by
|
|
// SMXConfig.
|
|
namespace SMXGif
|
|
{
|
|
struct Color
|
|
{
|
|
uint8_t color[4];
|
|
Color()
|
|
{
|
|
memset(color, 0, sizeof(color));
|
|
}
|
|
|
|
Color(uint8_t r, uint8_t g, uint8_t b, uint8_t a)
|
|
{
|
|
color[0] = r;
|
|
color[1] = g;
|
|
color[2] = b;
|
|
color[3] = a;
|
|
}
|
|
bool operator==(const Color &rhs) const
|
|
{
|
|
return !memcmp(color, rhs.color, sizeof(color));
|
|
}
|
|
};
|
|
|
|
struct GIFImage
|
|
{
|
|
int width = 0, height = 0;
|
|
void Init(int width, int height);
|
|
|
|
Color get(int x, int y) const { return image[y*width+x]; }
|
|
Color &get(int x, int y) { return image[y*width+x]; }
|
|
|
|
// Clear to a solid color.
|
|
void Clear(const Color &color);
|
|
|
|
// Copy a rectangle from this image into dst.
|
|
void CropImage(GIFImage &dst, int crop_left, int crop_top, int crop_width, int crop_height) const;
|
|
|
|
// Copy src into a rectangle in this image.
|
|
void Blit(GIFImage &src, int dst_left, int dst_top, int dst_width, int dst_height);
|
|
|
|
bool operator==(const GIFImage &rhs) const;
|
|
|
|
private:
|
|
std::vector<Color> image;
|
|
};
|
|
|
|
struct SMXGifFrame
|
|
{
|
|
int width = 0, height = 0;
|
|
|
|
// GIF images have a delay in 10ms units. We use 1ms for clarity.
|
|
int milliseconds = 0;
|
|
|
|
GIFImage frame;
|
|
};
|
|
|
|
// Decode a GIF into a list of frames.
|
|
bool DecodeGIF(std::string buf, std::vector<SMXGifFrame> &frames);
|
|
}
|
|
|
|
void gif_test();
|
|
|
|
#endif
|
|
|