/*
ImageMagick Image Methods.
*/
#ifndef _MNG_H
#define _MNG_H
#if defined(__cplusplus) || defined(c_plusplus)
extern "C" {
#endif
/*
For diagnosing PerlMagick problems
*/
#undef MNG_ALWAYS_VERBOSE
/*
This is temporary until I set up malloc'ed object attributes array.
Recompile with MNG_MAX_OBJECTS = 65536 to avoid this limit but
waste more memory.
*/
#define MNG_MAX_OBJECTS 256
/*
Features under construction. Define these to work on them.
*/
#undef MNG_OBJECT_BUFFERS
#undef MNG_BASI_SUPPORTED
/*
Define this to 9600 to get proposed MNG-0.96 capabilities (Draft
0.96), or to higher numbers to get proposed capabilities.
As of July 20, 1999, version 0.96 is the latest approved version.
MNG_LEVEL 9600: MNG-0.96
#define MNG_LEVEL 9600
*/
/*
If this is not defined, spec is interpreted strictly. If it is
defined, an attempt will be made to recover from some errors,
including
o global PLTE too short
*/
#undef MNG_LOOSE
/*
Don't try to define PNG_READ|WRITE_EMPTY_PLTE_SUPPORTED here. Make sure
it's defined in libpng/pngconf.h, version 1.0.3a or later. It won't work
with earlier versions of libpng. As of July 20, 1999, libpng-1.0.3a has
not yet been released by the PNG group.
*/
/*
Maximum valid unsigned long in PNG/MNG chunks is (2^31)-1
This macro is only defined in libpng-1.0.3a and later.
*/
#ifndef PNG_MAX_UINT
#define PNG_MAX_UINT (png_uint_32) 0x7fffffffL
#endif
/*
Constant strings for known chunk types. If you need to add a chunk,
add a string holding the name here. To make the code more
portable, we use ASCII numbers like this, not characters.
*/
png_byte FARDATA mng_MHDR[5] = { 77, 72, 68, 82, '\0'};
png_byte FARDATA mng_BACK[5] = { 66, 65, 67, 75, '\0'};
png_byte FARDATA mng_BASI[5] = { 66, 65, 83, 73, '\0'};
png_byte FARDATA mng_CLIP[5] = { 67, 76, 73, 80, '\0'};
png_byte FARDATA mng_CLON[5] = { 67, 76, 79, 78, '\0'};
png_byte FARDATA mng_DEFI[5] = { 68, 69, 70, 73, '\0'};
png_byte FARDATA mng_DHDR[5] = { 68, 72, 68, 82, '\0'};
png_byte FARDATA mng_DISC[5] = { 68, 73, 83, 67, '\0'};
png_byte FARDATA mng_ENDL[5] = { 69, 78, 68, 76, '\0'};
png_byte FARDATA mng_FRAM[5] = { 70, 82, 65, 77, '\0'};
png_byte FARDATA mng_IDAT[5] = { 73, 68, 65, 84, '\0'};
png_byte FARDATA mng_IEND[5] = { 73, 69, 78, 68, '\0'};
png_byte FARDATA mng_IHDR[5] = { 73, 72, 68, 82, '\0'};
png_byte FARDATA mng_JDAT[5] = { 74, 68, 65, 84, '\0'};
png_byte FARDATA mng_JHDR[5] = { 74, 72, 68, 82, '\0'};
png_byte FARDATA mng_JSEP[5] = { 74, 83, 69, 80, '\0'};
png_byte FARDATA mng_LOOP[5] = { 76, 79, 79, 80, '\0'};
png_byte FARDATA mng_MEND[5] = { 77, 69, 78, 68, '\0'};
png_byte FARDATA mng_MOVE[5] = { 77, 79, 86, 69, '\0'};
png_byte FARDATA mng_PAST[5] = { 80, 65, 83, 84, '\0'};
png_byte FARDATA mng_PLTE[5] = { 80, 76, 84, 69, '\0'};
png_byte FARDATA mng_SAVE[5] = { 83, 65, 86, 69, '\0'};
png_byte FARDATA mng_SEEK[5] = { 83, 69, 69, 75, '\0'};
png_byte FARDATA mng_SHOW[5] = { 83, 72, 79, 87, '\0'};
png_byte FARDATA mng_TERM[5] = { 84, 69, 82, 77, '\0'};
png_byte FARDATA mng_bKGD[5] = { 98, 75, 71, 68, '\0'};
png_byte FARDATA mng_cHRM[5] = { 99, 72, 82, 77, '\0'};
png_byte FARDATA mng_gAMA[5] = {103, 65, 77, 65, '\0'};
png_byte FARDATA mng_hIST[5] = {104, 73, 83, 84, '\0'};
png_byte FARDATA mng_iCCP[5] = {105, 67, 67, 80, '\0'};
png_byte FARDATA mng_iTXt[5] = {105, 84, 88, 116, '\0'};
png_byte FARDATA mng_oFFs[5] = {111, 70, 70, 115, '\0'};
png_byte FARDATA mng_pHYg[5] = {112, 72, 89, 103, '\0'};
png_byte FARDATA mng_pHYs[5] = {112, 72, 89, 115, '\0'};
png_byte FARDATA mng_sBIT[5] = {115, 66, 73, 84, '\0'};
png_byte FARDATA mng_sPLT[5] = {115, 80, 76, 84, '\0'};
png_byte FARDATA mng_sRGB[5] = {115, 82, 71, 66, '\0'};
png_byte FARDATA mng_tEXt[5] = {116, 69, 88, 116, '\0'};
png_byte FARDATA mng_tIME[5] = {116, 73, 77, 69, '\0'};
png_byte FARDATA mng_tRNS[5] = {116, 82, 78, 83, '\0'};
png_byte FARDATA mng_zTXt[5] = {122, 84, 88, 116, '\0'};
typedef struct _MngBox
{
long
left,
right,
top,
bottom;
} MngBox;
typedef struct _MngPair
{
long
a,
b;
} MngPair;
#ifdef MNG_OBJECT_BUFFERS
typedef struct _MngBuffer
{
unsigned long
height,
width;
Image
*image;
png_color
plte[256];
int
reference_count;
unsigned char
alpha_sample_depth,
compression_method,
color_type,
concrete,
filter_method,
frozen,
image_type,
interlace_method,
pixel_sample_depth,
plte_length,
sample_depth,
viewable;
} MngBuffer;
#endif
typedef struct _Mng
{
#ifdef MNG_OBJECT_BUFFERS
MngBuffer
*ob[MNG_MAX_OBJECTS];
#endif
Image *
image;
#ifndef PNG_READ_EMPTY_PLTE_SUPPORTED
png_byte
read_buffer[8];
int
bytes_in_read_buffer,
found_empty_plte,
have_saved_bkgd_index,
saved_bkgd_index;
#endif
long
x_off[MNG_MAX_OBJECTS],
y_off[MNG_MAX_OBJECTS];
MngBox
object_clip[MNG_MAX_OBJECTS];
unsigned char
/* These flags could be combined into one byte */
exists[MNG_MAX_OBJECTS],
frozen[MNG_MAX_OBJECTS],
visible[MNG_MAX_OBJECTS],
viewable[MNG_MAX_OBJECTS];
long
loop_count[256],
loop_iteration[256],
loop_jump[256];
unsigned char
loop_active[256];
png_colorp
global_plte;
png_color_8p
global_sbit;
png_byte
global_trns[256];
float
global_gamma;
ChromaticityInfo
global_chrm;
RenderingIntent
global_srgb_intent;
unsigned long
global_x_pixels_per_unit,
global_y_pixels_per_unit;
unsigned int
global_phys_unit_type;
unsigned int
basi_warning,
clon_warning,
dhdr_warning,
jhdr_warning,
past_warning,
phyg_warning,
phys_warning,
sbit_warning,
show_warning,
verbose;
#ifdef MNG_BASI_SUPPORTED
unsigned long
basi_width,
basi_height;
unsigned int
basi_depth,
basi_color_type,
basi_compression_method,
basi_filter_type,
basi_interlace_method,
basi_red,
basi_green,
basi_blue,
basi_alpha,
basi_viewable;
#endif
} Mng;
#if defined(__cplusplus) || defined(c_plusplus)
}
#endif
#endif