2015-03-29 16:19:09 +02:00

135 lines
3.6 KiB
C

/* Copyright (C) 2010-2015 The RetroArch team
*
* ---------------------------------------------------------------------------------------
* The following license statement only applies to this file (rpng.h).
* ---------------------------------------------------------------------------------------
*
* Permission is hereby granted, free of charge,
* to any person obtaining a copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#ifndef __LIBRETRO_SDK_FORMAT_RPNG_H__
#define __LIBRETRO_SDK_FORMAT_RPNG_H__
#include <stdint.h>
#include <stddef.h>
#include <boolean.h>
#include <file/file_extract.h>
#ifdef __cplusplus
extern "C" {
#endif
struct idat_buffer
{
uint8_t *data;
size_t size;
};
struct png_chunk
{
uint32_t size;
char type[4];
uint8_t *data;
};
struct png_ihdr
{
uint32_t width;
uint32_t height;
uint8_t depth;
uint8_t color_type;
uint8_t compression;
uint8_t filter;
uint8_t interlace;
};
struct rpng_process_t
{
bool initialized;
bool inflate_initialized;
bool adam7_pass_initialized;
bool pass_initialized;
uint32_t *data;
uint32_t *palette;
struct png_ihdr ihdr;
uint8_t *prev_scanline;
uint8_t *decoded_scanline;
uint8_t *inflate_buf;
size_t restore_buf_size;
size_t adam7_restore_buf_size;
size_t data_restore_buf_size;
size_t inflate_buf_size;
unsigned bpp;
unsigned pitch;
unsigned h;
struct
{
unsigned width;
unsigned height;
size_t size;
unsigned pos;
} pass;
void *stream;
zlib_file_handle_t handle;
};
struct rpng_t
{
struct rpng_process_t process;
bool has_ihdr;
bool has_idat;
bool has_iend;
bool has_plte;
struct idat_buffer idat_buf;
struct png_ihdr ihdr;
uint8_t *buff_data;
uint32_t palette[256];
struct png_chunk chunk;
};
bool rpng_load_image_argb(const char *path, uint32_t **data,
unsigned *width, unsigned *height);
struct rpng_t *rpng_nbio_load_image_argb_init(const char *path);
void rpng_nbio_load_image_free(struct rpng_t *rpng);
bool rpng_nbio_load_image_argb_iterate(uint8_t *buf,
struct rpng_t *rpng);
int rpng_nbio_load_image_argb_process(struct rpng_t *rpng,
uint32_t **data, unsigned *width, unsigned *height);
int rpng_load_image_argb_process_inflate_init(struct rpng_t *rpng,
uint32_t **data, unsigned *width, unsigned *height);
bool rpng_nbio_load_image_argb_start(struct rpng_t *rpng);
#ifdef HAVE_ZLIB_DEFLATE
bool rpng_save_image_argb(const char *path, const uint32_t *data,
unsigned width, unsigned height, unsigned pitch);
bool rpng_save_image_bgr24(const char *path, const uint8_t *data,
unsigned width, unsigned height, unsigned pitch);
#endif
#ifdef __cplusplus
}
#endif
#endif