mirror of
https://github.com/dborth/snes9xgx.git
synced 2024-11-01 16:35:16 +01:00
79 lines
2.7 KiB
C
79 lines
2.7 KiB
C
/********************************************************************************************
|
|
*
|
|
* PNGU
|
|
*
|
|
* Original author: frontier (http://frontier-dev.net)
|
|
* Modified by Tantric, 2009-2010
|
|
*
|
|
********************************************************************************************/
|
|
|
|
#ifndef __PNGU__
|
|
#define __PNGU__
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
// Types
|
|
typedef unsigned char PNGU_u8;
|
|
typedef unsigned short PNGU_u16;
|
|
typedef unsigned int PNGU_u32;
|
|
typedef unsigned long long PNGU_u64;
|
|
|
|
typedef struct
|
|
{
|
|
PNGU_u8 r;
|
|
PNGU_u8 g;
|
|
PNGU_u8 b;
|
|
} PNGUCOLOR;
|
|
|
|
typedef struct
|
|
{
|
|
PNGU_u32 imgWidth; // In pixels
|
|
PNGU_u32 imgHeight; // In pixels
|
|
PNGU_u32 imgBitDepth; // In bitx
|
|
PNGU_u32 imgColorType; // PNGU_COLOR_TYPE_*
|
|
PNGU_u32 validBckgrnd; // Non zero if there is a background color
|
|
PNGUCOLOR bckgrnd; // Backgroun color
|
|
PNGU_u32 numTrans; // Number of transparent colors
|
|
PNGUCOLOR *trans; // Transparent colors
|
|
} PNGUPROP;
|
|
|
|
// Image context, always initialize with SelectImageFrom* and free with ReleaseImageContext
|
|
struct _IMGCTX;
|
|
typedef struct _IMGCTX *IMGCTX;
|
|
|
|
/****************************************************************************
|
|
* Image context handling *
|
|
****************************************************************************/
|
|
|
|
// Selects a PNG file, previosly loaded into a buffer, and creates an image context for subsequent procesing.
|
|
IMGCTX PNGU_SelectImageFromBuffer (const void *buffer);
|
|
|
|
// Selects a PNG file, from any devoptab device, and creates an image context for subsequent procesing.
|
|
IMGCTX PNGU_SelectImageFromDevice (const char *filename);
|
|
|
|
// Frees resources associated with an image context. Always call this function when you no longer need the IMGCTX.
|
|
void PNGU_ReleaseImageContext (IMGCTX ctx);
|
|
|
|
/****************************************************************************
|
|
* Miscellaneous *
|
|
****************************************************************************/
|
|
|
|
// Retrieves info from selected PNG file, including image dimensions, color format, background and transparency colors.
|
|
int PNGU_GetImageProperties (IMGCTX ctx, PNGUPROP *fileproperties);
|
|
|
|
/****************************************************************************
|
|
* Image conversion *
|
|
****************************************************************************/
|
|
|
|
PNGU_u8 * DecodePNG(const PNGU_u8 *src, int *width, int *height);
|
|
int PNGU_EncodeFromRGB (IMGCTX ctx, PNGU_u32 width, PNGU_u32 height, void *buffer, PNGU_u32 stride);
|
|
int PNGU_EncodeFromGXTexture (IMGCTX ctx, PNGU_u32 width, PNGU_u32 height, void *buffer, PNGU_u32 stride);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif
|