lodepng.c File Reference

#include "lodepng/lodepng.h"

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Data Structures
struct	ucvector

Macros
#define	LODEPNG_INLINE   /* not available */
#define	LODEPNG_RESTRICT   /* not available */
#define	LODEPNG_MAX(a, b)   (((a) > (b)) ? (a) : (b))
#define	LODEPNG_MIN(a, b)   (((a) < (b)) ? (a) : (b))
#define	CERROR_BREAK(errorvar, code)
#define	ERROR_BREAK(code)   CERROR_BREAK(error, code)
#define	CERROR_RETURN_ERROR(errorvar, code)
#define	CERROR_TRY_RETURN(call)
#define	CERROR_RETURN(errorvar, code)

Typedefs
typedef struct ucvector	ucvector

Functions
void *	lodepng_malloc (size_t size)
void *	lodepng_realloc (void *ptr, size_t new_size)
void	lodepng_free (void *ptr)
static void	lodepng_memcpy (void *LODEPNG_RESTRICT dst, const void *LODEPNG_RESTRICT src, size_t size)
static void	lodepng_memset (void *LODEPNG_RESTRICT dst, int value, size_t num)
static size_t	lodepng_strlen (const char *a)
static unsigned	ucvector_reserve (ucvector *p, size_t size)
static unsigned	ucvector_resize (ucvector *p, size_t size)
static ucvector	ucvector_init (unsigned char *buffer, size_t size)

Variables
const char *	LODEPNG_VERSION_STRING = "20230410"

Macro Definition Documentation

CERROR_BREAK

#define CERROR_BREAK	(		errorvar,
			code
	)

Value:

  {\
  errorvar = code;\
  break;\
}

Definition at line 179 of file lodepng.c.

                                    {\
  errorvar = code;\
  break;\
}

CERROR_RETURN

#define CERROR_RETURN	(		errorvar,
			code
	)

Value:

  {\
  errorvar = code;\
  return;\
}

Definition at line 200 of file lodepng.c.

                                     {\
  errorvar = code;\
  return;\
}

CERROR_RETURN_ERROR

#define CERROR_RETURN_ERROR	(		errorvar,
			code
	)

Value:

  {\
  errorvar = code;\
  return code;\
}

Definition at line 188 of file lodepng.c.

                                           {\
  errorvar = code;\
  return code;\
}

CERROR_TRY_RETURN

#define CERROR_TRY_RETURN

(

call

)

Value:

  {\
  unsigned error = call;\
  if(error) return error;\
}

Definition at line 194 of file lodepng.c.

                               {\
  unsigned error = call;\
  if(error) return error;\
}

ERROR_BREAK

#define ERROR_BREAK

(

code

)

CERROR_BREAK(error, code)

Definition at line 185 of file lodepng.c.

LODEPNG_INLINE

#define LODEPNG_INLINE   /* not available */

Definition at line 104 of file lodepng.c.

LODEPNG_MAX

#define LODEPNG_MAX	(		a,
			b
	)		(((a) > (b)) ? (a) : (b))

Definition at line 141 of file lodepng.c.

LODEPNG_MIN

#define LODEPNG_MIN	(		a,
			b
	)		(((a) < (b)) ? (a) : (b))

Definition at line 142 of file lodepng.c.

LODEPNG_RESTRICT

#define LODEPNG_RESTRICT   /* not available */

Definition at line 113 of file lodepng.c.

Typedef Documentation

ucvector

typedef struct ucvector ucvector

Function Documentation

lodepng_free()

void lodepng_free

(

void *

ptr

)

lodepng_malloc()

void * lodepng_malloc

(

size_t

size

)

lodepng_memcpy()

static void lodepng_memcpy ( void *LODEPNG_RESTRICT  dst, const void *LODEPNG_RESTRICT  src, size_t  size  )

static

Definition at line 120 of file lodepng.c.

                                                                          {
  size_t i;
  for(i = 0; i < size; i++) ((char*)dst)[i] = ((const char*)src)[i];
}

lodepng_memset()

static void lodepng_memset ( void *LODEPNG_RESTRICT  dst, int  value, size_t  num  )

static

Definition at line 126 of file lodepng.c.

                                                  {
  size_t i;
  for(i = 0; i < num; i++) ((char*)dst)[i] = (char)value;
}

lodepng_realloc()

void * lodepng_realloc	(	void *	ptr,
		size_t	new_size
	)

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lodepng_strlen()

static size_t lodepng_strlen ( const char *  a )

static

Definition at line 133 of file lodepng.c.

                                            {
  const char* orig = a;
  /* avoid warning about unused function in case of disabled COMPILE... macros */
  (void)(&lodepng_strlen);
  while(*a) a++;
  return (size_t)(a - orig);
}

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ucvector_init()

static ucvector ucvector_init ( unsigned char *  buffer, size_t  size  )

static

Definition at line 288 of file lodepng.c.

                                                                  {
  ucvector v;
  v.data = buffer;
  v.allocsize = v.size = size;
  return v;
}

ucvector_reserve()

static unsigned ucvector_reserve ( ucvector *  p, size_t  size  )

static

Definition at line 269 of file lodepng.c.

                                                           {
  if(size > p->allocsize) {
    size_t newsize = size + (p->allocsize >> 1u);
    void* data = lodepng_realloc(p->data, newsize);
    if(data) {
      p->allocsize = newsize;
      p->data = (unsigned char*)data;
    }
    else return 0; /*error: not enough memory*/
  }
  return 1; /*success*/
}

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ucvector_resize()

static unsigned ucvector_resize ( ucvector *  p, size_t  size  )

static

Definition at line 283 of file lodepng.c.

                                                          {
  p->size = size;
  return ucvector_reserve(p, size);
}

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Variable Documentation

LODEPNG_VERSION_STRING

const char* LODEPNG_VERSION_STRING = "20230410"

Definition at line 47 of file lodepng.c.