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openjpeg/applications/codec/convert.c

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/*
* Copyright (c) 2002-2007, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium
* Copyright (c) 2002-2007, Professor Benoit Macq
* Copyright (c) 2001-2003, David Janssens
* Copyright (c) 2002-2003, Yannick Verschueren
* Copyright (c) 2003-2007, Francois-Olivier Devaux and Antonin Descampe
* Copyright (c) 2005, Herve Drolon, FreeImage Team
* Copyright (c) 2006-2007, Parvatha Elangovan
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include "opj_config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#ifdef HAVE_LIBTIFF
#include <tiffio.h>
#endif /* HAVE_LIBTIFF */
#ifdef HAVE_LIBPNG
#include <zlib.h>
#include <png.h>
#endif /* HAVE_LIBPNG */
#include "openjpeg.h"
#include "convert.h"
/*
* Get logarithm of an integer and round downwards.
*
* log2(a)
*/
static int int_floorlog2(int a) {
int l;
for (l = 0; a > 1; l++) {
a >>= 1;
}
return l;
}
/* -->> -->> -->> -->>
TGA IMAGE FORMAT
<<-- <<-- <<-- <<-- */
#ifdef INFORMATION_ONLY
// TGA header definition.
struct tga_header
{
unsigned char id_length; /* Image id field length */
unsigned char colour_map_type; /* Colour map type */
unsigned char image_type; /* Image type */
/*
** Colour map specification
*/
unsigned short colour_map_index; /* First entry index */
unsigned short colour_map_length; /* Colour map length */
unsigned char colour_map_entry_size; /* Colour map entry size */
/*
** Image specification
*/
unsigned short x_origin; /* x origin of image */
unsigned short y_origin; /* u origin of image */
unsigned short image_width; /* Image width */
unsigned short image_height; /* Image height */
unsigned char pixel_depth; /* Pixel depth */
unsigned char image_desc; /* Image descriptor */
};
#endif /* INFORMATION_ONLY */
static unsigned short get_ushort(unsigned short val) {
#ifdef ORDER_BIGENDIAN
return( ((val & 0xff) << 8) + (val >> 8) );
#else
return( val );
#endif
}
#define TGA_HEADER_SIZE 18
int tga_readheader(FILE *fp, unsigned int *bits_per_pixel,
unsigned int *width, unsigned int *height, int *flip_image)
{
int palette_size;
unsigned char *tga ;
unsigned char id_len, cmap_type, image_type;
unsigned char pixel_depth, image_desc;
unsigned short cmap_index, cmap_len, cmap_entry_size;
unsigned short x_origin, y_origin, image_w, image_h;
if (!bits_per_pixel || !width || !height || !flip_image)
return 0;
tga = (unsigned char*)malloc(18);
if ( fread(tga, TGA_HEADER_SIZE, 1, fp) != 1 )
{
fprintf(stderr, "\nError: fread return a number of element different from the expected.\n");
return 0 ;
}
id_len = (unsigned char)tga[0];
cmap_type = (unsigned char)tga[1];
image_type = (unsigned char)tga[2];
cmap_index = get_ushort(*(unsigned short*)(&tga[3]));
cmap_len = get_ushort(*(unsigned short*)(&tga[5]));
cmap_entry_size = (unsigned char)tga[7];
x_origin = get_ushort(*(unsigned short*)(&tga[8]));
y_origin = get_ushort(*(unsigned short*)(&tga[10]));
image_w = get_ushort(*(unsigned short*)(&tga[12]));
image_h = get_ushort(*(unsigned short*)(&tga[14]));
pixel_depth = (unsigned char)tga[16];
image_desc = (unsigned char)tga[17];
free(tga);
*bits_per_pixel = (unsigned int)pixel_depth;
*width = (unsigned int)image_w;
*height = (unsigned int)image_h;
// Ignore tga identifier, if present ...
if (id_len)
{
unsigned char *id = (unsigned char *) malloc(id_len);
if ( !fread(id, id_len, 1, fp) )
{
fprintf(stderr, "\nError: fread return a number of element different from the expected.\n");
free(id);
return 0 ;
}
free(id);
}
// Test for compressed formats ... not yet supported ...
// Note :- 9 - RLE encoded palettized.
// 10 - RLE encoded RGB.
if (image_type > 8)
{
fprintf(stderr, "Sorry, compressed tga files are not currently supported.\n");
return 0 ;
}
*flip_image = !(image_desc & 32);
// Palettized formats are not yet supported, skip over the palette, if present ...
palette_size = cmap_len * (cmap_entry_size/8);
if (palette_size>0)
{
fprintf(stderr, "File contains a palette - not yet supported.");
fseek(fp, palette_size, SEEK_CUR);
}
return 1;
}
int tga_writeheader(FILE *fp, int bits_per_pixel, int width, int height,
opj_bool flip_image)
{
unsigned short image_w, image_h, us0;
unsigned char uc0, image_type;
unsigned char pixel_depth, image_desc;
if (!bits_per_pixel || !width || !height)
return 0;
pixel_depth = 0;
if ( bits_per_pixel < 256 )
pixel_depth = (unsigned char)bits_per_pixel;
else{
fprintf(stderr,"ERROR: Wrong bits per pixel inside tga_header");
return 0;
}
uc0 = 0;
if(fwrite(&uc0, 1, 1, fp) != 1) goto fails; // id_length
if(fwrite(&uc0, 1, 1, fp) != 1) goto fails; // colour_map_type
image_type = 2; // Uncompressed.
if(fwrite(&image_type, 1, 1, fp) != 1) goto fails;
us0 = 0;
if(fwrite(&us0, 2, 1, fp) != 1) goto fails; // colour_map_index
if(fwrite(&us0, 2, 1, fp) != 1) goto fails; // colour_map_length
if(fwrite(&uc0, 1, 1, fp) != 1) goto fails; // colour_map_entry_size
if(fwrite(&us0, 2, 1, fp) != 1) goto fails; // x_origin
if(fwrite(&us0, 2, 1, fp) != 1) goto fails; // y_origin
image_w = (unsigned short)width;
image_h = (unsigned short) height;
if(fwrite(&image_w, 2, 1, fp) != 1) goto fails;
if(fwrite(&image_h, 2, 1, fp) != 1) goto fails;
if(fwrite(&pixel_depth, 1, 1, fp) != 1) goto fails;
image_desc = 8; // 8 bits per component.
if (flip_image)
image_desc |= 32;
if(fwrite(&image_desc, 1, 1, fp) != 1) goto fails;
return 1;
fails:
fputs("\nwrite_tgaheader: write ERROR\n", stderr);
return 0;
}
opj_image_t* tgatoimage(const char *filename, opj_cparameters_t *parameters) {
FILE *f;
opj_image_t *image;
unsigned int image_width, image_height, pixel_bit_depth;
unsigned int x, y;
int flip_image=0;
opj_image_cmptparm_t cmptparm[4]; /* maximum 4 components */
int numcomps;
OPJ_COLOR_SPACE color_space;
opj_bool mono ;
opj_bool save_alpha;
int subsampling_dx, subsampling_dy;
int i;
f = fopen(filename, "rb");
if (!f) {
fprintf(stderr, "Failed to open %s for reading !!\n", filename);
return 0;
}
if (!tga_readheader(f, &pixel_bit_depth, &image_width, &image_height, &flip_image))
return NULL;
// We currently only support 24 & 32 bit tga's ...
if (!((pixel_bit_depth == 24) || (pixel_bit_depth == 32)))
return NULL;
/* initialize image components */
memset(&cmptparm[0], 0, 4 * sizeof(opj_image_cmptparm_t));
mono = (pixel_bit_depth == 8) || (pixel_bit_depth == 16); // Mono with & without alpha.
save_alpha = (pixel_bit_depth == 16) || (pixel_bit_depth == 32); // Mono with alpha, or RGB with alpha
if (mono) {
color_space = CLRSPC_GRAY;
numcomps = save_alpha ? 2 : 1;
}
else {
numcomps = save_alpha ? 4 : 3;
color_space = CLRSPC_SRGB;
}
subsampling_dx = parameters->subsampling_dx;
subsampling_dy = parameters->subsampling_dy;
for (i = 0; i < numcomps; i++) {
cmptparm[i].prec = 8;
cmptparm[i].bpp = 8;
cmptparm[i].sgnd = 0;
cmptparm[i].dx = subsampling_dx;
cmptparm[i].dy = subsampling_dy;
cmptparm[i].w = image_width;
cmptparm[i].h = image_height;
}
/* create the image */
image = opj_image_create(numcomps, &cmptparm[0], color_space);
if (!image)
return NULL;
/* set image offset and reference grid */
image->x0 = parameters->image_offset_x0;
image->y0 = parameters->image_offset_y0;
image->x1 = !image->x0 ? (image_width - 1) * subsampling_dx + 1 : image->x0 + (image_width - 1) * subsampling_dx + 1;
image->y1 = !image->y0 ? (image_height - 1) * subsampling_dy + 1 : image->y0 + (image_height - 1) * subsampling_dy + 1;
/* set image data */
for (y=0; y < image_height; y++)
{
int index;
if (flip_image)
index = (image_height-y-1)*image_width;
else
index = y*image_width;
if (numcomps==3)
{
for (x=0;x<image_width;x++)
{
unsigned char r,g,b;
if( !fread(&b, 1, 1, f) )
{
fprintf(stderr, "\nError: fread return a number of element different from the expected.\n");
opj_image_destroy(image);
return NULL;
}
if ( !fread(&g, 1, 1, f) )
{
fprintf(stderr, "\nError: fread return a number of element different from the expected.\n");
opj_image_destroy(image);
return NULL;
}
if ( !fread(&r, 1, 1, f) )
{
fprintf(stderr, "\nError: fread return a number of element different from the expected.\n");
opj_image_destroy(image);
return NULL;
}
image->comps[0].data[index]=r;
image->comps[1].data[index]=g;
image->comps[2].data[index]=b;
index++;
}
}
else if (numcomps==4)
{
for (x=0;x<image_width;x++)
{
unsigned char r,g,b,a;
if ( !fread(&b, 1, 1, f) )
{
fprintf(stderr, "\nError: fread return a number of element different from the expected.\n");
opj_image_destroy(image);
return NULL;
}
if ( !fread(&g, 1, 1, f) )
{
fprintf(stderr, "\nError: fread return a number of element different from the expected.\n");
opj_image_destroy(image);
return NULL;
}
if ( !fread(&r, 1, 1, f) )
{
fprintf(stderr, "\nError: fread return a number of element different from the expected.\n");
opj_image_destroy(image);
return NULL;
}
if ( !fread(&a, 1, 1, f) )
{
fprintf(stderr, "\nError: fread return a number of element different from the expected.\n");
opj_image_destroy(image);
return NULL;
}
image->comps[0].data[index]=r;
image->comps[1].data[index]=g;
image->comps[2].data[index]=b;
image->comps[3].data[index]=a;
index++;
}
}
else {
fprintf(stderr, "Currently unsupported bit depth : %s\n", filename);
}
}
return image;
}
int imagetotga(opj_image_t * image, const char *outfile) {
int width, height, bpp, x, y;
opj_bool write_alpha;
int i;
unsigned int alpha_channel;
float r,g,b,a;
unsigned char value;
float scale;
FILE *fdest;
fdest = fopen(outfile, "wb");
if (!fdest) {
fprintf(stderr, "ERROR -> failed to open %s for writing\n", outfile);
return 1;
}
for (i = 0; i < image->numcomps-1; i++) {
if ((image->comps[0].dx != image->comps[i+1].dx)
||(image->comps[0].dy != image->comps[i+1].dy)
||(image->comps[0].prec != image->comps[i+1].prec)) {
fprintf(stderr, "Unable to create a tga file with such J2K image charateristics.");
return 1;
}
}
width = image->comps[0].w;
height = image->comps[0].h;
// Mono with alpha, or RGB with alpha.
write_alpha = (image->numcomps==2) || (image->numcomps==4);
// Write TGA header
bpp = write_alpha ? 32 : 24;
if (!tga_writeheader(fdest, bpp, width , height, OPJ_TRUE))
return 1;
alpha_channel = image->numcomps-1;
scale = 255.0f / (float)((1<<image->comps[0].prec)-1);
for (y=0; y < height; y++) {
unsigned int index=y*width;
for (x=0; x < width; x++, index++) {
r = (float)(image->comps[0].data[index]);
if (image->numcomps>2) {
g = (float)(image->comps[1].data[index]);
b = (float)(image->comps[2].data[index]);
}
else {// Greyscale ...
g = r;
b = r;
}
// TGA format writes BGR ...
value = (unsigned char)(b*scale);
fwrite(&value,1,1,fdest);
value = (unsigned char)(g*scale);
fwrite(&value,1,1,fdest);
value = (unsigned char)(r*scale);
fwrite(&value,1,1,fdest);
if (write_alpha) {
a = (float)(image->comps[alpha_channel].data[index]);
value = (unsigned char)(a*scale);
fwrite(&value,1,1,fdest);
}
}
}
return 0;
}
/* -->> -->> -->> -->>
BMP IMAGE FORMAT
<<-- <<-- <<-- <<-- */
/* WORD defines a two byte word */
typedef unsigned short int WORD;
/* DWORD defines a four byte word */
typedef unsigned long int DWORD;
typedef struct {
WORD bfType; /* 'BM' for Bitmap (19776) */
DWORD bfSize; /* Size of the file */
WORD bfReserved1; /* Reserved : 0 */
WORD bfReserved2; /* Reserved : 0 */
DWORD bfOffBits; /* Offset */
} BITMAPFILEHEADER_t;
typedef struct {
DWORD biSize; /* Size of the structure in bytes */
DWORD biWidth; /* Width of the image in pixels */
DWORD biHeight; /* Heigth of the image in pixels */
WORD biPlanes; /* 1 */
WORD biBitCount; /* Number of color bits by pixels */
DWORD biCompression; /* Type of encoding 0: none 1: RLE8 2: RLE4 */
DWORD biSizeImage; /* Size of the image in bytes */
DWORD biXpelsPerMeter; /* Horizontal (X) resolution in pixels/meter */
DWORD biYpelsPerMeter; /* Vertical (Y) resolution in pixels/meter */
DWORD biClrUsed; /* Number of color used in the image (0: ALL) */
DWORD biClrImportant; /* Number of important color (0: ALL) */
} BITMAPINFOHEADER_t;
opj_image_t* bmptoimage(const char *filename, opj_cparameters_t *parameters)
{
int subsampling_dx = parameters->subsampling_dx;
int subsampling_dy = parameters->subsampling_dy;
int i, numcomps, w, h;
OPJ_COLOR_SPACE color_space;
opj_image_cmptparm_t cmptparm[3]; /* maximum of 3 components */
opj_image_t * image = NULL;
FILE *IN;
BITMAPFILEHEADER_t File_h;
BITMAPINFOHEADER_t Info_h;
unsigned char *RGB;
unsigned char *table_R, *table_G, *table_B;
unsigned int j, PAD = 0;
int x, y, index;
int gray_scale = 1;
int has_color;
DWORD W, H;
IN = fopen(filename, "rb");
if (!IN)
{
fprintf(stderr, "Failed to open %s for reading !!\n", filename);
return NULL;
}
File_h.bfType = getc(IN);
File_h.bfType = (getc(IN) << 8) + File_h.bfType;
if (File_h.bfType != 19778)
{
fprintf(stderr,"Error, not a BMP file!\n");
fclose(IN);
return NULL;
}
/* FILE HEADER */
/* ------------- */
File_h.bfSize = getc(IN);
File_h.bfSize = (getc(IN) << 8) + File_h.bfSize;
File_h.bfSize = (getc(IN) << 16) + File_h.bfSize;
File_h.bfSize = (getc(IN) << 24) + File_h.bfSize;
File_h.bfReserved1 = getc(IN);
File_h.bfReserved1 = (getc(IN) << 8) + File_h.bfReserved1;
File_h.bfReserved2 = getc(IN);
File_h.bfReserved2 = (getc(IN) << 8) + File_h.bfReserved2;
File_h.bfOffBits = getc(IN);
File_h.bfOffBits = (getc(IN) << 8) + File_h.bfOffBits;
File_h.bfOffBits = (getc(IN) << 16) + File_h.bfOffBits;
File_h.bfOffBits = (getc(IN) << 24) + File_h.bfOffBits;
/* INFO HEADER */
/* ------------- */
Info_h.biSize = getc(IN);
Info_h.biSize = (getc(IN) << 8) + Info_h.biSize;
Info_h.biSize = (getc(IN) << 16) + Info_h.biSize;
Info_h.biSize = (getc(IN) << 24) + Info_h.biSize;
if(Info_h.biSize != 40)
{
fprintf(stderr,"Error, unknown BMP header size %ld\n", Info_h.biSize);
fclose(IN);
return NULL;
}
Info_h.biWidth = getc(IN);
Info_h.biWidth = (getc(IN) << 8) + Info_h.biWidth;
Info_h.biWidth = (getc(IN) << 16) + Info_h.biWidth;
Info_h.biWidth = (getc(IN) << 24) + Info_h.biWidth;
w = Info_h.biWidth;
Info_h.biHeight = getc(IN);
Info_h.biHeight = (getc(IN) << 8) + Info_h.biHeight;
Info_h.biHeight = (getc(IN) << 16) + Info_h.biHeight;
Info_h.biHeight = (getc(IN) << 24) + Info_h.biHeight;
h = Info_h.biHeight;
Info_h.biPlanes = getc(IN);
Info_h.biPlanes = (getc(IN) << 8) + Info_h.biPlanes;
Info_h.biBitCount = getc(IN);
Info_h.biBitCount = (getc(IN) << 8) + Info_h.biBitCount;
Info_h.biCompression = getc(IN);
Info_h.biCompression = (getc(IN) << 8) + Info_h.biCompression;
Info_h.biCompression = (getc(IN) << 16) + Info_h.biCompression;
Info_h.biCompression = (getc(IN) << 24) + Info_h.biCompression;
Info_h.biSizeImage = getc(IN);
Info_h.biSizeImage = (getc(IN) << 8) + Info_h.biSizeImage;
Info_h.biSizeImage = (getc(IN) << 16) + Info_h.biSizeImage;
Info_h.biSizeImage = (getc(IN) << 24) + Info_h.biSizeImage;
Info_h.biXpelsPerMeter = getc(IN);
Info_h.biXpelsPerMeter = (getc(IN) << 8) + Info_h.biXpelsPerMeter;
Info_h.biXpelsPerMeter = (getc(IN) << 16) + Info_h.biXpelsPerMeter;
Info_h.biXpelsPerMeter = (getc(IN) << 24) + Info_h.biXpelsPerMeter;
Info_h.biYpelsPerMeter = getc(IN);
Info_h.biYpelsPerMeter = (getc(IN) << 8) + Info_h.biYpelsPerMeter;
Info_h.biYpelsPerMeter = (getc(IN) << 16) + Info_h.biYpelsPerMeter;
Info_h.biYpelsPerMeter = (getc(IN) << 24) + Info_h.biYpelsPerMeter;
Info_h.biClrUsed = getc(IN);
Info_h.biClrUsed = (getc(IN) << 8) + Info_h.biClrUsed;
Info_h.biClrUsed = (getc(IN) << 16) + Info_h.biClrUsed;
Info_h.biClrUsed = (getc(IN) << 24) + Info_h.biClrUsed;
Info_h.biClrImportant = getc(IN);
Info_h.biClrImportant = (getc(IN) << 8) + Info_h.biClrImportant;
Info_h.biClrImportant = (getc(IN) << 16) + Info_h.biClrImportant;
Info_h.biClrImportant = (getc(IN) << 24) + Info_h.biClrImportant;
/* Read the data and store them in the OUT file */
if (Info_h.biBitCount == 24)
{
numcomps = 3;
color_space = CLRSPC_SRGB;
/* initialize image components */
memset(&cmptparm[0], 0, 3 * sizeof(opj_image_cmptparm_t));
for(i = 0; i < numcomps; i++)
{
cmptparm[i].prec = 8;
cmptparm[i].bpp = 8;
cmptparm[i].sgnd = 0;
cmptparm[i].dx = subsampling_dx;
cmptparm[i].dy = subsampling_dy;
cmptparm[i].w = w;
cmptparm[i].h = h;
}
/* create the image */
image = opj_image_create(numcomps, &cmptparm[0], color_space);
if(!image)
{
fclose(IN);
return NULL;
}
/* set image offset and reference grid */
image->x0 = parameters->image_offset_x0;
image->y0 = parameters->image_offset_y0;
image->x1 = !image->x0 ? (w - 1) * subsampling_dx + 1 : image->x0 + (w - 1) * subsampling_dx + 1;
image->y1 = !image->y0 ? (h - 1) * subsampling_dy + 1 : image->y0 + (h - 1) * subsampling_dy + 1;
/* set image data */
/* Place the cursor at the beginning of the image information */
fseek(IN, 0, SEEK_SET);
fseek(IN, File_h.bfOffBits, SEEK_SET);
W = Info_h.biWidth;
H = Info_h.biHeight;
/* PAD = 4 - (3 * W) % 4; */
/* PAD = (PAD == 4) ? 0 : PAD; */
PAD = (3 * W) % 4 ? 4 - (3 * W) % 4 : 0;
RGB = (unsigned char *)
malloc((3 * W + PAD) * H * sizeof(unsigned char));
if ( fread(RGB, sizeof(unsigned char), (3 * W + PAD) * H, IN) != (3 * W + PAD) * H )
{
free(RGB);
opj_image_destroy(image);
fprintf(stderr, "\nError: fread return a number of element different from the expected.\n");
return NULL;
}
index = 0;
for(y = 0; y < (int)H; y++)
{
unsigned char *scanline = RGB + (3 * W + PAD) * (H - 1 - y);
for(x = 0; x < (int)W; x++)
{
unsigned char *pixel = &scanline[3 * x];
image->comps[0].data[index] = pixel[2]; /* R */
image->comps[1].data[index] = pixel[1]; /* G */
image->comps[2].data[index] = pixel[0]; /* B */
index++;
}
}
free(RGB);
}/* if (Info_h.biBitCount == 24) */
else
if (Info_h.biBitCount == 8 && Info_h.biCompression == 0)//RGB
{
if(Info_h.biClrUsed == 0) Info_h.biClrUsed = 256;
else
if(Info_h.biClrUsed > 256) Info_h.biClrUsed = 256;
table_R = (unsigned char *) malloc(256 * sizeof(unsigned char));
table_G = (unsigned char *) malloc(256 * sizeof(unsigned char));
table_B = (unsigned char *) malloc(256 * sizeof(unsigned char));
has_color = 0;
for (j = 0; j < Info_h.biClrUsed; j++)
{
table_B[j] = (unsigned char)getc(IN);
table_G[j] = (unsigned char)getc(IN);
table_R[j] = (unsigned char)getc(IN);
getc(IN);
has_color +=
!(table_R[j] == table_G[j] && table_R[j] == table_B[j]);
}
if(has_color) gray_scale = 0;
/* Place the cursor at the beginning of the image information */
fseek(IN, 0, SEEK_SET);
fseek(IN, File_h.bfOffBits, SEEK_SET);
W = Info_h.biWidth;
H = Info_h.biHeight;
if (Info_h.biWidth % 2)
W++;
numcomps = gray_scale ? 1 : 3;
color_space = gray_scale ? CLRSPC_GRAY : CLRSPC_SRGB;
/* initialize image components */
memset(&cmptparm[0], 0, 3 * sizeof(opj_image_cmptparm_t));
for(i = 0; i < numcomps; i++)
{
cmptparm[i].prec = 8;
cmptparm[i].bpp = 8;
cmptparm[i].sgnd = 0;
cmptparm[i].dx = subsampling_dx;
cmptparm[i].dy = subsampling_dy;
cmptparm[i].w = w;
cmptparm[i].h = h;
}
/* create the image */
image = opj_image_create(numcomps, &cmptparm[0], color_space);
if(!image)
{
fclose(IN);
free(table_R); free(table_G); free(table_B);
return NULL;
}
/* set image offset and reference grid */
image->x0 = parameters->image_offset_x0;
image->y0 = parameters->image_offset_y0;
image->x1 = !image->x0 ? (w - 1) * subsampling_dx + 1 : image->x0 + (w - 1) * subsampling_dx + 1;
image->y1 = !image->y0 ? (h - 1) * subsampling_dy + 1 : image->y0 + (h - 1) * subsampling_dy + 1;
/* set image data */
RGB = (unsigned char *) malloc(W * H * sizeof(unsigned char));
if ( fread(RGB, sizeof(unsigned char), W * H, IN) != W * H )
{
free(table_R);
free(table_G);
free(table_B);
free(RGB);
opj_image_destroy(image);
fprintf(stderr, "\nError: fread return a number of element different from the expected.\n");
return NULL;
}
if (gray_scale)
{
index = 0;
for (j = 0; j < W * H; j++)
{
if ((j % W < W - 1 && Info_h.biWidth % 2) || !(Info_h.biWidth % 2))
{
image->comps[0].data[index] =
table_R[RGB[W * H - ((j) / (W) + 1) * W + (j) % (W)]];
index++;
}
}
}
else
{
index = 0;
for (j = 0; j < W * H; j++)
{
if ((j % W < W - 1 && Info_h.biWidth % 2)
|| !(Info_h.biWidth % 2))
{
unsigned char pixel_index =
RGB[W * H - ((j) / (W) + 1) * W + (j) % (W)];
image->comps[0].data[index] = table_R[pixel_index];
image->comps[1].data[index] = table_G[pixel_index];
image->comps[2].data[index] = table_B[pixel_index];
index++;
}
}
}
free(RGB);
free(table_R);
free(table_G);
free(table_B);
}/* RGB8 */
else
if (Info_h.biBitCount == 8 && Info_h.biCompression == 1)//RLE8
{
unsigned char *pix, *beyond;
int *gray, *red, *green, *blue;
unsigned int x, y, max;
int i, c, c1;
unsigned char uc;
if (Info_h.biClrUsed == 0)
Info_h.biClrUsed = 256;
else if (Info_h.biClrUsed > 256)
Info_h.biClrUsed = 256;
table_R = (unsigned char *) malloc(256 * sizeof(unsigned char));
table_G = (unsigned char *) malloc(256 * sizeof(unsigned char));
table_B = (unsigned char *) malloc(256 * sizeof(unsigned char));
has_color = 0;
for (j = 0; j < Info_h.biClrUsed; j++)
{
table_B[j] = (unsigned char)getc(IN);
table_G[j] = (unsigned char)getc(IN);
table_R[j] = (unsigned char)getc(IN);
getc(IN);
has_color += !(table_R[j] == table_G[j] && table_R[j] == table_B[j]);
}
if (has_color)
gray_scale = 0;
numcomps = gray_scale ? 1 : 3;
color_space = gray_scale ? CLRSPC_GRAY : CLRSPC_SRGB;
/* initialize image components */
memset(&cmptparm[0], 0, 3 * sizeof(opj_image_cmptparm_t));
for (i = 0; i < numcomps; i++)
{
cmptparm[i].prec = 8;
cmptparm[i].bpp = 8;
cmptparm[i].sgnd = 0;
cmptparm[i].dx = subsampling_dx;
cmptparm[i].dy = subsampling_dy;
cmptparm[i].w = w;
cmptparm[i].h = h;
}
/* create the image */
image = opj_image_create(numcomps, &cmptparm[0], color_space);
if (!image)
{
fclose(IN);
free(table_R);
free(table_G);
free(table_B);
return NULL;
}
/* set image offset and reference grid */
image->x0 = parameters->image_offset_x0;
image->y0 = parameters->image_offset_y0;
image->x1 = !image->x0 ? (w - 1) * subsampling_dx + 1 : image->x0 + (w
- 1) * subsampling_dx + 1;
image->y1 = !image->y0 ? (h - 1) * subsampling_dy + 1 : image->y0 + (h
- 1) * subsampling_dy + 1;
/* set image data */
/* Place the cursor at the beginning of the image information */
fseek(IN, 0, SEEK_SET);
fseek(IN, File_h.bfOffBits, SEEK_SET);
W = Info_h.biWidth;
H = Info_h.biHeight;
RGB = (unsigned char *) calloc(1, W * H * sizeof(unsigned char));
beyond = RGB + W * H;
pix = beyond - W;
x = y = 0;
while (y < H)
{
c = getc(IN);
if (c)
{
c1 = getc(IN);
for (i = 0; i < c && x < W && pix < beyond; i++, x++, pix++)
*pix = (unsigned char)c1;
}
else
{
c = getc(IN);
if (c == 0x00) /* EOL */
{
x = 0;
++y;
pix = RGB + x + (H - y - 1) * W;
}
else if (c == 0x01) /* EOP */
break;
else if (c == 0x02) /* MOVE by dxdy */
{
c = getc(IN);
x += c;
c = getc(IN);
y += c;
pix = RGB + (H - y - 1) * W + x;
}
else /* 03 .. 255 */
{
i = 0;
for (; i < c && x < W && pix < beyond; i++, x++, pix++)
{
c1 = getc(IN);
*pix = (unsigned char)c1;
}
if (c & 1) /* skip padding byte */
getc(IN);
}
}
}/* while() */
if (gray_scale)
{
gray = image->comps[0].data;
pix = RGB;
max = W * H;
while (max--)
{
uc = *pix++;
*gray++ = table_R[uc];
}
}
else
{
//int *red, *green, *blue;
red = image->comps[0].data;
green = image->comps[1].data;
blue = image->comps[2].data;
pix = RGB;
max = W * H;
while (max--)
{
uc = *pix++;
*red++ = table_R[uc];
*green++ = table_G[uc];
*blue++ = table_B[uc];
}
}
free(RGB);
free(table_R);
free(table_G);
free(table_B);
}/* RLE8 */
else
{
fprintf(stderr,
"Other system than 24 bits/pixels or 8 bits (no RLE coding) "
"is not yet implemented [%d]\n", Info_h.biBitCount);
}
fclose(IN);
return image;
}
int imagetobmp(opj_image_t * image, const char *outfile) {
int w, h;
int i, pad;
FILE *fdest = NULL;
int adjustR, adjustG, adjustB;
if (image->numcomps == 3 && image->comps[0].dx == image->comps[1].dx
&& image->comps[1].dx == image->comps[2].dx
&& image->comps[0].dy == image->comps[1].dy
&& image->comps[1].dy == image->comps[2].dy
&& image->comps[0].prec == image->comps[1].prec
&& image->comps[1].prec == image->comps[2].prec) {
/* -->> -->> -->> -->>
24 bits color
<<-- <<-- <<-- <<-- */
fdest = fopen(outfile, "wb");
if (!fdest) {
fprintf(stderr, "ERROR -> failed to open %s for writing\n", outfile);
return 1;
}
w = image->comps[0].w;
h = image->comps[0].h;
fprintf(fdest, "BM");
/* FILE HEADER */
/* ------------- */
fprintf(fdest, "%c%c%c%c",
(unsigned char) (h * w * 3 + 3 * h * (w % 2) + 54) & 0xff,
(unsigned char) ((h * w * 3 + 3 * h * (w % 2) + 54) >> 8) & 0xff,
(unsigned char) ((h * w * 3 + 3 * h * (w % 2) + 54) >> 16) & 0xff,
(unsigned char) ((h * w * 3 + 3 * h * (w % 2) + 54) >> 24) & 0xff);
fprintf(fdest, "%c%c%c%c", (0) & 0xff, ((0) >> 8) & 0xff, ((0) >> 16) & 0xff, ((0) >> 24) & 0xff);
fprintf(fdest, "%c%c%c%c", (54) & 0xff, ((54) >> 8) & 0xff,((54) >> 16) & 0xff, ((54) >> 24) & 0xff);
/* INFO HEADER */
/* ------------- */
fprintf(fdest, "%c%c%c%c", (40) & 0xff, ((40) >> 8) & 0xff, ((40) >> 16) & 0xff, ((40) >> 24) & 0xff);
fprintf(fdest, "%c%c%c%c", (unsigned char) ((w) & 0xff),
(unsigned char) ((w) >> 8) & 0xff,
(unsigned char) ((w) >> 16) & 0xff,
(unsigned char) ((w) >> 24) & 0xff);
fprintf(fdest, "%c%c%c%c", (unsigned char) ((h) & 0xff),
(unsigned char) ((h) >> 8) & 0xff,
(unsigned char) ((h) >> 16) & 0xff,
(unsigned char) ((h) >> 24) & 0xff);
fprintf(fdest, "%c%c", (1) & 0xff, ((1) >> 8) & 0xff);
fprintf(fdest, "%c%c", (24) & 0xff, ((24) >> 8) & 0xff);
fprintf(fdest, "%c%c%c%c", (0) & 0xff, ((0) >> 8) & 0xff, ((0) >> 16) & 0xff, ((0) >> 24) & 0xff);
fprintf(fdest, "%c%c%c%c", (unsigned char) (3 * h * w + 3 * h * (w % 2)) & 0xff,
(unsigned char) ((h * w * 3 + 3 * h * (w % 2)) >> 8) & 0xff,
(unsigned char) ((h * w * 3 + 3 * h * (w % 2)) >> 16) & 0xff,
(unsigned char) ((h * w * 3 + 3 * h * (w % 2)) >> 24) & 0xff);
fprintf(fdest, "%c%c%c%c", (7834) & 0xff, ((7834) >> 8) & 0xff, ((7834) >> 16) & 0xff, ((7834) >> 24) & 0xff);
fprintf(fdest, "%c%c%c%c", (7834) & 0xff, ((7834) >> 8) & 0xff, ((7834) >> 16) & 0xff, ((7834) >> 24) & 0xff);
fprintf(fdest, "%c%c%c%c", (0) & 0xff, ((0) >> 8) & 0xff, ((0) >> 16) & 0xff, ((0) >> 24) & 0xff);
fprintf(fdest, "%c%c%c%c", (0) & 0xff, ((0) >> 8) & 0xff, ((0) >> 16) & 0xff, ((0) >> 24) & 0xff);
if (image->comps[0].prec > 8) {
adjustR = image->comps[0].prec - 8;
printf("BMP CONVERSION: Truncating component 0 from %d bits to 8 bits\n", image->comps[0].prec);
}
else
adjustR = 0;
if (image->comps[1].prec > 8) {
adjustG = image->comps[1].prec - 8;
printf("BMP CONVERSION: Truncating component 1 from %d bits to 8 bits\n", image->comps[1].prec);
}
else
adjustG = 0;
if (image->comps[2].prec > 8) {
adjustB = image->comps[2].prec - 8;
printf("BMP CONVERSION: Truncating component 2 from %d bits to 8 bits\n", image->comps[2].prec);
}
else
adjustB = 0;
for (i = 0; i < w * h; i++) {
unsigned char rc, gc, bc;
int r, g, b;
r = image->comps[0].data[w * h - ((i) / (w) + 1) * w + (i) % (w)];
r += (image->comps[0].sgnd ? 1 << (image->comps[0].prec - 1) : 0);
r = ((r >> adjustR)+((r >> (adjustR-1))%2));
if(r > 255) r = 255; else if(r < 0) r = 0;
rc = (unsigned char)r;
g = image->comps[1].data[w * h - ((i) / (w) + 1) * w + (i) % (w)];
g += (image->comps[1].sgnd ? 1 << (image->comps[1].prec - 1) : 0);
g = ((g >> adjustG)+((g >> (adjustG-1))%2));
if(g > 255) g = 255; else if(g < 0) g = 0;
gc = (unsigned char)g;
b = image->comps[2].data[w * h - ((i) / (w) + 1) * w + (i) % (w)];
b += (image->comps[2].sgnd ? 1 << (image->comps[2].prec - 1) : 0);
b = ((b >> adjustB)+((b >> (adjustB-1))%2));
if(b > 255) b = 255; else if(b < 0) b = 0;
bc = (unsigned char)b;
fprintf(fdest, "%c%c%c", bc, gc, rc);
if ((i + 1) % w == 0) {
for (pad = (3 * w) % 4 ? 4 - (3 * w) % 4 : 0; pad > 0; pad--) /* ADD */
fprintf(fdest, "%c", 0);
}
}
fclose(fdest);
} else { /* Gray-scale */
/* -->> -->> -->> -->>
8 bits non code (Gray scale)
<<-- <<-- <<-- <<-- */
fdest = fopen(outfile, "wb");
w = image->comps[0].w;
h = image->comps[0].h;
fprintf(fdest, "BM");
/* FILE HEADER */
/* ------------- */
fprintf(fdest, "%c%c%c%c", (unsigned char) (h * w + 54 + 1024 + h * (w % 2)) & 0xff,
(unsigned char) ((h * w + 54 + 1024 + h * (w % 2)) >> 8) & 0xff,
(unsigned char) ((h * w + 54 + 1024 + h * (w % 2)) >> 16) & 0xff,
(unsigned char) ((h * w + 54 + 1024 + w * (w % 2)) >> 24) & 0xff);
fprintf(fdest, "%c%c%c%c", (0) & 0xff, ((0) >> 8) & 0xff, ((0) >> 16) & 0xff, ((0) >> 24) & 0xff);
fprintf(fdest, "%c%c%c%c", (54 + 1024) & 0xff, ((54 + 1024) >> 8) & 0xff,
((54 + 1024) >> 16) & 0xff,
((54 + 1024) >> 24) & 0xff);
/* INFO HEADER */
/* ------------- */
fprintf(fdest, "%c%c%c%c", (40) & 0xff, ((40) >> 8) & 0xff, ((40) >> 16) & 0xff, ((40) >> 24) & 0xff);
fprintf(fdest, "%c%c%c%c", (unsigned char) ((w) & 0xff),
(unsigned char) ((w) >> 8) & 0xff,
(unsigned char) ((w) >> 16) & 0xff,
(unsigned char) ((w) >> 24) & 0xff);
fprintf(fdest, "%c%c%c%c", (unsigned char) ((h) & 0xff),
(unsigned char) ((h) >> 8) & 0xff,
(unsigned char) ((h) >> 16) & 0xff,
(unsigned char) ((h) >> 24) & 0xff);
fprintf(fdest, "%c%c", (1) & 0xff, ((1) >> 8) & 0xff);
fprintf(fdest, "%c%c", (8) & 0xff, ((8) >> 8) & 0xff);
fprintf(fdest, "%c%c%c%c", (0) & 0xff, ((0) >> 8) & 0xff, ((0) >> 16) & 0xff, ((0) >> 24) & 0xff);
fprintf(fdest, "%c%c%c%c", (unsigned char) (h * w + h * (w % 2)) & 0xff,
(unsigned char) ((h * w + h * (w % 2)) >> 8) & 0xff,
(unsigned char) ((h * w + h * (w % 2)) >> 16) & 0xff,
(unsigned char) ((h * w + h * (w % 2)) >> 24) & 0xff);
fprintf(fdest, "%c%c%c%c", (7834) & 0xff, ((7834) >> 8) & 0xff, ((7834) >> 16) & 0xff, ((7834) >> 24) & 0xff);
fprintf(fdest, "%c%c%c%c", (7834) & 0xff, ((7834) >> 8) & 0xff, ((7834) >> 16) & 0xff, ((7834) >> 24) & 0xff);
fprintf(fdest, "%c%c%c%c", (256) & 0xff, ((256) >> 8) & 0xff, ((256) >> 16) & 0xff, ((256) >> 24) & 0xff);
fprintf(fdest, "%c%c%c%c", (256) & 0xff, ((256) >> 8) & 0xff, ((256) >> 16) & 0xff, ((256) >> 24) & 0xff);
if (image->comps[0].prec > 8) {
adjustR = image->comps[0].prec - 8;
printf("BMP CONVERSION: Truncating component 0 from %d bits to 8 bits\n", image->comps[0].prec);
}else
adjustR = 0;
for (i = 0; i < 256; i++) {
fprintf(fdest, "%c%c%c%c", i, i, i, 0);
}
for (i = 0; i < w * h; i++) {
int r;
r = image->comps[0].data[w * h - ((i) / (w) + 1) * w + (i) % (w)];
r += (image->comps[0].sgnd ? 1 << (image->comps[0].prec - 1) : 0);
r = ((r >> adjustR)+((r >> (adjustR-1))%2));
if(r > 255) r = 255; else if(r < 0) r = 0;
fprintf(fdest, "%c", (unsigned char)r);
if ((i + 1) % w == 0) {
for (pad = w % 4 ? 4 - w % 4 : 0; pad > 0; pad--) /* ADD */
fprintf(fdest, "%c", 0);
}
}
fclose(fdest);
}
return 0;
}
/* -->> -->> -->> -->>
PGX IMAGE FORMAT
<<-- <<-- <<-- <<-- */
unsigned char readuchar(FILE * f)
{
unsigned char c1;
if ( !fread(&c1, 1, 1, f) )
{
fprintf(stderr, "\nError: fread return a number of element different from the expected.\n");
return 0;
}
return c1;
}
unsigned short readushort(FILE * f, int bigendian)
{
unsigned char c1, c2;
if ( !fread(&c1, 1, 1, f) )
{
fprintf(stderr, "\nError: fread return a number of element different from the expected.\n");
return 0;
}
if ( !fread(&c2, 1, 1, f) )
{
fprintf(stderr, "\nError: fread return a number of element different from the expected.\n");
return 0;
}
if (bigendian)
return (c1 << 8) + c2;
else
return (c2 << 8) + c1;
}
unsigned int readuint(FILE * f, int bigendian)
{
unsigned char c1, c2, c3, c4;
if ( !fread(&c1, 1, 1, f) )
{
fprintf(stderr, "\nError: fread return a number of element different from the expected.\n");
return 0;
}
if ( !fread(&c2, 1, 1, f) )
{
fprintf(stderr, "\nError: fread return a number of element different from the expected.\n");
return 0;
}
if ( !fread(&c3, 1, 1, f) )
{
fprintf(stderr, "\nError: fread return a number of element different from the expected.\n");
return 0;
}
if ( !fread(&c4, 1, 1, f) )
{
fprintf(stderr, "\nError: fread return a number of element different from the expected.\n");
return 0;
}
if (bigendian)
return (c1 << 24) + (c2 << 16) + (c3 << 8) + c4;
else
return (c4 << 24) + (c3 << 16) + (c2 << 8) + c1;
}
opj_image_t* pgxtoimage(const char *filename, opj_cparameters_t *parameters) {
FILE *f = NULL;
int w, h, prec;
int i, numcomps, max;
OPJ_COLOR_SPACE color_space;
opj_image_cmptparm_t cmptparm; /* maximum of 1 component */
opj_image_t * image = NULL;
char endian1,endian2,sign;
char signtmp[32];
char temp[32];
int bigendian;
opj_image_comp_t *comp = NULL;
numcomps = 1;
color_space = CLRSPC_GRAY;
memset(&cmptparm, 0, sizeof(opj_image_cmptparm_t));
max = 0;
f = fopen(filename, "rb");
if (!f) {
fprintf(stderr, "Failed to open %s for reading !\n", filename);
return NULL;
}
fseek(f, 0, SEEK_SET);
if( fscanf(f, "PG%[ \t]%c%c%[ \t+-]%d%[ \t]%d%[ \t]%d",temp,&endian1,&endian2,signtmp,&prec,temp,&w,temp,&h) != 9){
fprintf(stderr, "ERROR: Failed to read the right number of element from the fscanf() function!\n");
return NULL;
}
i=0;
sign='+';
while (signtmp[i]!='\0') {
if (signtmp[i]=='-') sign='-';
i++;
}
fgetc(f);
if (endian1=='M' && endian2=='L') {
bigendian = 1;
} else if (endian2=='M' && endian1=='L') {
bigendian = 0;
} else {
fprintf(stderr, "Bad pgx header, please check input file\n");
return NULL;
}
/* initialize image component */
cmptparm.x0 = parameters->image_offset_x0;
cmptparm.y0 = parameters->image_offset_y0;
cmptparm.w = !cmptparm.x0 ? (w - 1) * parameters->subsampling_dx + 1 : cmptparm.x0 + (w - 1) * parameters->subsampling_dx + 1;
cmptparm.h = !cmptparm.y0 ? (h - 1) * parameters->subsampling_dy + 1 : cmptparm.y0 + (h - 1) * parameters->subsampling_dy + 1;
if (sign == '-') {
cmptparm.sgnd = 1;
} else {
cmptparm.sgnd = 0;
}
cmptparm.prec = prec;
cmptparm.bpp = prec;
cmptparm.dx = parameters->subsampling_dx;
cmptparm.dy = parameters->subsampling_dy;
/* create the image */
image = opj_image_create(numcomps, &cmptparm, color_space);
if(!image) {
fclose(f);
return NULL;
}
/* set image offset and reference grid */
image->x0 = cmptparm.x0;
image->y0 = cmptparm.x0;
image->x1 = cmptparm.w;
image->y1 = cmptparm.h;
/* set image data */
comp = &image->comps[0];
for (i = 0; i < w * h; i++) {
int v;
if (comp->prec <= 8) {
if (!comp->sgnd) {
v = readuchar(f);
} else {
v = (char) readuchar(f);
}
} else if (comp->prec <= 16) {
if (!comp->sgnd) {
v = readushort(f, bigendian);
} else {
v = (short) readushort(f, bigendian);
}
} else {
if (!comp->sgnd) {
v = readuint(f, bigendian);
} else {
v = (int) readuint(f, bigendian);
}
}
if (v > max)
max = v;
comp->data[i] = v;
}
fclose(f);
comp->bpp = int_floorlog2(max) + 1;
return image;
}
int imagetopgx(opj_image_t * image, const char *outfile) {
int w, h;
int i, j, compno;
FILE *fdest = NULL;
for (compno = 0; compno < image->numcomps; compno++) {
opj_image_comp_t *comp = &image->comps[compno];
char bname[256]; /* buffer for name */
char *name = bname; /* pointer */
int nbytes = 0;
const size_t olen = strlen(outfile);
const size_t dotpos = olen - 4;
const size_t total = dotpos + 1 + 1 + 4; /* '-' + '[1-3]' + '.pgx' */
if( outfile[dotpos] != '.' ) {
/* `pgx` was recognized but there is no dot at expected position */
fprintf(stderr, "ERROR -> Impossible happen." );
return 1;
}
if( total > 256 ) {
name = (char*)malloc(total+1);
}
strncpy(name, outfile, dotpos);
//if (image->numcomps > 1) {
sprintf(name+dotpos, "_%d.pgx", compno);
/*} else {
strcpy(name+dotpos, ".pgx");
}*/
fdest = fopen(name, "wb");
if (!fdest) {
fprintf(stderr, "ERROR -> failed to open %s for writing\n", name);
return 1;
}
/* dont need name anymore */
if( total > 256 ) {
free(name);
}
w = image->comps[compno].w;
h = image->comps[compno].h;
fprintf(fdest, "PG ML %c %d %d %d\n", comp->sgnd ? '-' : '+', comp->prec, w, h);
if (comp->prec <= 8) {
nbytes = 1;
} else if (comp->prec <= 16) {
nbytes = 2;
} else {
nbytes = 4;
}
for (i = 0; i < w * h; i++) {
int v = image->comps[compno].data[i];
for (j = nbytes - 1; j >= 0; j--) {
char byte = (char) (v >> (j * 8));
fwrite(&byte, 1, 1, fdest);
}
}
fclose(fdest);
}
return 0;
}
/* -->> -->> -->> -->>
PNM IMAGE FORMAT
<<-- <<-- <<-- <<-- */
struct pnm_header
{
int width, height, maxval, depth, format;
char rgb, rgba, gray, graya, bw;
char ok;
};
static char *skip_white(char *s)
{
while(*s)
{
if(*s == '\n' || *s == '\r') return NULL;
if(isspace(*s)) { ++s; continue; }
return s;
}
return NULL;
}
static char *skip_int(char *start, int *out_n)
{
char *s;
char c;
*out_n = 0; s = start;
s = skip_white(start);
if(s == NULL) return NULL;
start = s;
while(*s)
{
if( !isdigit(*s)) break;
++s;
}
c = *s; *s = 0; *out_n = atoi(start); *s = c;
return s;
}
static char *skip_idf(char *start, char out_idf[256])
{
char *s;
char c;
s = skip_white(start);
if(s == NULL) return NULL;
start = s;
while(*s)
{
if(isalpha(*s) || *s == '_') { ++s; continue; }
break;
}
c = *s; *s = 0; strncpy(out_idf, start, 255); *s = c;
return s;
}
static void read_pnm_header(FILE *reader, struct pnm_header *ph)
{
char *s;
int format, have_wh, end, ttype;
char idf[256], type[256];
char line[256];
if (fgets(line, 250, reader) == NULL)
{
fprintf(stderr,"\nWARNING: fgets return a NULL value");
return;
}
if(line[0] != 'P')
{
fprintf(stderr,"read_pnm_header:PNM:magic P missing\n"); return;
}
format = atoi(line + 1);
if(format < 1 || format > 7)
{
fprintf(stderr,"read_pnm_header:magic format %d invalid\n", format);
return;
}
ph->format = format;
ttype = end = have_wh = 0;
while(fgets(line, 250, reader))
{
if(*line == '#') continue;
s = line;
if(format == 7)
{
s = skip_idf(s, idf);
if(s == NULL || *s == 0) return;
if(strcmp(idf, "ENDHDR") == 0)
{
end = 1; break;
}
if(strcmp(idf, "WIDTH") == 0)
{
s = skip_int(s, &ph->width);
if(s == NULL || *s == 0) return;
continue;
}
if(strcmp(idf, "HEIGHT") == 0)
{
s = skip_int(s, &ph->height);
if(s == NULL || *s == 0) return;
continue;
}
if(strcmp(idf, "DEPTH") == 0)
{
s = skip_int(s, &ph->depth);
if(s == NULL || *s == 0) return;
continue;
}
if(strcmp(idf, "MAXVAL") == 0)
{
s = skip_int(s, &ph->maxval);
if(s == NULL || *s == 0) return;
continue;
}
if(strcmp(idf, "TUPLTYPE") == 0)
{
s = skip_idf(s, type);
if(s == NULL || *s == 0) return;
if(strcmp(type, "BLACKANDWHITE") == 0)
{
ph->bw = 1; ttype = 1; continue;
}
if(strcmp(type, "GRAYSCALE") == 0)
{
ph->gray = 1; ttype = 1; continue;
}
if(strcmp(type, "GRAYSCALE_ALPHA") == 0)
{
ph->graya = 1; ttype = 1; continue;
}
if(strcmp(type, "RGB") == 0)
{
ph->rgb = 1; ttype = 1; continue;
}
if(strcmp(type, "RGB_ALPHA") == 0)
{
ph->rgba = 1; ttype = 1; continue;
}
fprintf(stderr,"read_pnm_header:unknown P7 TUPLTYPE %s\n",type);
return;
}
fprintf(stderr,"read_pnm_header:unknown P7 idf %s\n",idf);
return;
} /* if(format == 7) */
if( !have_wh)
{
s = skip_int(s, &ph->width);
s = skip_int(s, &ph->height);
have_wh = 1;
if(format == 1 || format == 4) break;
continue;
}
if(format == 2 || format == 3 || format == 5 || format == 6)
{
/* P2, P3, P5, P6: */
s = skip_int(s, &ph->maxval);
if(ph->maxval > 65535) return;
}
break;
}/* while(fgets( ) */
if(format == 2 || format == 3 || format > 4)
{
if(ph->maxval < 1 || ph->maxval > 65535) return;
}
if(ph->width < 1 || ph->height < 1) return;
if(format == 7)
{
if(!end)
{
fprintf(stderr,"read_pnm_header:P7 without ENDHDR\n"); return;
}
if(ph->depth < 1 || ph->depth > 4) return;
if(ph->width && ph->height && ph->depth & ph->maxval && ttype)
ph->ok = 1;
}
else
{
if(format != 1 && format != 4)
{
if(ph->width && ph->height && ph->maxval) ph->ok = 1;
}
else
{
if(ph->width && ph->height) ph->ok = 1;
ph->maxval = 255;
}
}
}
static int has_prec(int val)
{
if(val < 2) return 1;
if(val < 4) return 2;
if(val < 8) return 3;
if(val < 16) return 4;
if(val < 32) return 5;
if(val < 64) return 6;
if(val < 128) return 7;
if(val < 256) return 8;
if(val < 512) return 9;
if(val < 1024) return 10;
if(val < 2048) return 11;
if(val < 4096) return 12;
if(val < 8192) return 13;
if(val < 16384) return 14;
if(val < 32768) return 15;
return 16;
}
opj_image_t* pnmtoimage(const char *filename, opj_cparameters_t *parameters) {
int subsampling_dx = parameters->subsampling_dx;
int subsampling_dy = parameters->subsampling_dy;
FILE *fp = NULL;
int i, compno, numcomps, w, h, prec, format;
OPJ_COLOR_SPACE color_space;
opj_image_cmptparm_t cmptparm[4]; /* RGBA: max. 4 components */
opj_image_t * image = NULL;
struct pnm_header header_info;
if((fp = fopen(filename, "rb")) == NULL)
{
fprintf(stderr, "pnmtoimage:Failed to open %s for reading!\n",filename);
return NULL;
}
memset(&header_info, 0, sizeof(struct pnm_header));
read_pnm_header(fp, &header_info);
if(!header_info.ok) { fclose(fp); return NULL; }
format = header_info.format;
switch(format)
{
case 1: /* ascii bitmap */
case 4: /* raw bitmap */
numcomps = 1;
break;
case 2: /* ascii greymap */
case 5: /* raw greymap */
numcomps = 1;
break;
case 3: /* ascii pixmap */
case 6: /* raw pixmap */
numcomps = 3;
break;
case 7: /* arbitrary map */
numcomps = header_info.depth;
break;
default: fclose(fp); return NULL;
}
if(numcomps < 3)
color_space = CLRSPC_GRAY;/* GRAY, GRAYA */
else
color_space = CLRSPC_SRGB;/* RGB, RGBA */
prec = has_prec(header_info.maxval);
if(prec < 8) prec = 8;
w = header_info.width;
h = header_info.height;
subsampling_dx = parameters->subsampling_dx;
subsampling_dy = parameters->subsampling_dy;
memset(&cmptparm[0], 0, numcomps * sizeof(opj_image_cmptparm_t));
for(i = 0; i < numcomps; i++)
{
cmptparm[i].prec = prec;
cmptparm[i].bpp = prec;
cmptparm[i].sgnd = 0;
cmptparm[i].dx = subsampling_dx;
cmptparm[i].dy = subsampling_dy;
cmptparm[i].w = w;
cmptparm[i].h = h;
}
image = opj_image_create(numcomps, &cmptparm[0], color_space);
if(!image) { fclose(fp); return NULL; }
/* set image offset and reference grid */
image->x0 = parameters->image_offset_x0;
image->y0 = parameters->image_offset_y0;
image->x1 = parameters->image_offset_x0 + (w - 1) * subsampling_dx + 1;
image->y1 = parameters->image_offset_y0 + (h - 1) * subsampling_dy + 1;
if((format == 2) || (format == 3)) /* ascii pixmap */
{
unsigned int index;
for (i = 0; i < w * h; i++)
{
for(compno = 0; compno < numcomps; compno++)
{
index = 0;
if (fscanf(fp, "%u", &index) != 1)
fprintf(stderr, "\nWARNING: fscanf return a number of element different from the expected.\n");
image->comps[compno].data[i] = (index * 255)/header_info.maxval;
}
}
}
else
if((format == 5)
|| (format == 6)
||((format == 7)
&& ( header_info.gray || header_info.graya
|| header_info.rgb || header_info.rgba)))/* binary pixmap */
{
unsigned char c0, c1, one;
one = (prec < 9);
for (i = 0; i < w * h; i++)
{
for(compno = 0; compno < numcomps; compno++)
{
if ( !fread(&c0, 1, 1, fp) )
fprintf(stderr, "\nError: fread return a number of element different from the expected.\n");
if(one)
{
image->comps[compno].data[i] = c0;
}
else
{
if ( !fread(&c1, 1, 1, fp) )
fprintf(stderr, "\nError: fread return a number of element different from the expected.\n");
/* netpbm: */
image->comps[compno].data[i] = ((c0<<8) | c1);
}
}
}
}
else
if(format == 1) /* ascii bitmap */
{
for (i = 0; i < w * h; i++)
{
unsigned int index;
if ( fscanf(fp, "%u", &index) != 1)
fprintf(stderr, "\nWARNING: fscanf return a number of element different from the expected.\n");
image->comps[0].data[i] = (index?0:255);
}
}
else
if(format == 4)
{
int x, y, bit;
unsigned char uc;
i = 0;
for(y = 0; y < h; ++y)
{
bit = -1; uc = 0;
for(x = 0; x < w; ++x)
{
if(bit == -1)
{
bit = 7;
uc = (unsigned char)getc(fp);
}
image->comps[0].data[i] = (((uc>>bit) & 1)?0:255);
--bit; ++i;
}
}
}
else
if((format == 7 && header_info.bw)) //MONO
{
unsigned char uc;
for(i = 0; i < w * h; ++i)
{
if ( !fread(&uc, 1, 1, fp) )
fprintf(stderr, "\nError: fread return a number of element different from the expected.\n");
image->comps[0].data[i] = (uc & 1)?0:255;
}
}
fclose(fp);
return image;
}/* pnmtoimage() */
int imagetopnm(opj_image_t * image, const char *outfile)
{
int *red, *green, *blue, *alpha;
int wr, hr, max;
int i, compno, ncomp;
int adjustR, adjustG, adjustB, adjustA;
int fails, two, want_gray, has_alpha, triple;
int prec, v;
FILE *fdest = NULL;
const char *tmp = outfile;
char *destname;
if((prec = image->comps[0].prec) > 16)
{
fprintf(stderr,"%s:%d:imagetopnm\n\tprecision %d is larger than 16"
"\n\t: refused.\n",__FILE__,__LINE__,prec);
return 1;
}
two = has_alpha = 0; fails = 1;
ncomp = image->numcomps;
while (*tmp) ++tmp; tmp -= 2;
want_gray = (*tmp == 'g' || *tmp == 'G');
ncomp = image->numcomps;
if(want_gray) ncomp = 1;
if (ncomp == 2 /* GRAYA */
|| (ncomp > 2 /* RGB, RGBA */
&& image->comps[0].dx == image->comps[1].dx
&& image->comps[1].dx == image->comps[2].dx
&& image->comps[0].dy == image->comps[1].dy
&& image->comps[1].dy == image->comps[2].dy
&& image->comps[0].prec == image->comps[1].prec
&& image->comps[1].prec == image->comps[2].prec
))
{
fdest = fopen(outfile, "wb");
if (!fdest)
{
fprintf(stderr, "ERROR -> failed to open %s for writing\n", outfile);
return fails;
}
two = (prec > 8);
triple = (ncomp > 2);
wr = image->comps[0].w; hr = image->comps[0].h;
max = (1<<prec) - 1; has_alpha = (ncomp == 4 || ncomp == 2);
red = image->comps[0].data;
if(triple)
{
green = image->comps[1].data;
blue = image->comps[2].data;
}
else green = blue = NULL;
if(has_alpha)
{
const char *tt = (triple?"RGB_ALPHA":"GRAYSCALE_ALPHA");
fprintf(fdest, "P7\n# OpenJPEG-%s\nWIDTH %d\nHEIGHT %d\nDEPTH %d\n"
"MAXVAL %d\nTUPLTYPE %s\nENDHDR\n", opj_version(),
wr, hr, ncomp, max, tt);
alpha = image->comps[ncomp - 1].data;
adjustA = (image->comps[ncomp - 1].sgnd ?
1 << (image->comps[ncomp - 1].prec - 1) : 0);
}
else
{
fprintf(fdest, "P6\n# OpenJPEG-%s\n%d %d\n%d\n",
opj_version(), wr, hr, max);
alpha = NULL; adjustA = 0;
}
adjustR = (image->comps[0].sgnd ? 1 << (image->comps[0].prec - 1) : 0);
if(triple)
{
adjustG = (image->comps[1].sgnd ? 1 << (image->comps[1].prec - 1) : 0);
adjustB = (image->comps[2].sgnd ? 1 << (image->comps[2].prec - 1) : 0);
}
else adjustG = adjustB = 0;
for(i = 0; i < wr * hr; ++i)
{
if(two)
{
v = *red + adjustR; ++red;
/* netpbm: */
fprintf(fdest, "%c%c",(unsigned char)(v>>8), (unsigned char)v);
if(triple)
{
v = *green + adjustG; ++green;
/* netpbm: */
fprintf(fdest, "%c%c",(unsigned char)(v>>8), (unsigned char)v);
v = *blue + adjustB; ++blue;
/* netpbm: */
fprintf(fdest, "%c%c",(unsigned char)(v>>8), (unsigned char)v);
}/* if(triple) */
if(has_alpha)
{
v = *alpha + adjustA; ++alpha;
/* netpbm: */
fprintf(fdest, "%c%c",(unsigned char)(v>>8), (unsigned char)v);
}
continue;
} /* if(two) */
/* prec <= 8: */
fprintf(fdest, "%c", (unsigned char)*red++);
if(triple)
fprintf(fdest, "%c%c",(unsigned char)*green++, (unsigned char)*blue++);
if(has_alpha)
fprintf(fdest, "%c", (unsigned char)*alpha++);
} /* for(i */
fclose(fdest); return 0;
}
/* YUV or MONO: */
if (image->numcomps > ncomp)
{
fprintf(stderr,"WARNING -> [PGM file] Only the first component\n");
fprintf(stderr," is written to the file\n");
}
destname = (char*)malloc(strlen(outfile) + 8);
for (compno = 0; compno < ncomp; compno++)
{
if (ncomp > 1)
sprintf(destname, "%d.%s", compno, outfile);
else
sprintf(destname, "%s", outfile);
fdest = fopen(destname, "wb");
if (!fdest)
{
fprintf(stderr, "ERROR -> failed to open %s for writing\n", destname);
free(destname);
return 1;
}
wr = image->comps[compno].w; hr = image->comps[compno].h;
prec = image->comps[compno].prec;
max = (1<<prec) - 1;
fprintf(fdest, "P5\n#OpenJPEG-%s\n%d %d\n%d\n",
opj_version(), wr, hr, max);
red = image->comps[compno].data;
adjustR =
(image->comps[compno].sgnd ? 1 << (image->comps[compno].prec - 1) : 0);
if(prec > 8)
{
for (i = 0; i < wr * hr; i++)
{
v = *red + adjustR; ++red;
/* netpbm: */
fprintf(fdest, "%c%c",(unsigned char)(v>>8), (unsigned char)v);
if(has_alpha)
{
v = *alpha++;
/* netpbm: */
fprintf(fdest, "%c%c",(unsigned char)(v>>8), (unsigned char)v);
}
}/* for(i */
}
else /* prec <= 8 */
{
for(i = 0; i < wr * hr; ++i)
{
fprintf(fdest, "%c", (unsigned char)(*red + adjustR)); ++red;
}
}
fclose(fdest);
} /* for (compno */
free(destname);
return 0;
}/* imagetopnm() */
#ifdef HAVE_LIBTIFF
/* -->> -->> -->> -->>
TIFF IMAGE FORMAT
<<-- <<-- <<-- <<-- */
typedef struct tiff_infoheader{
DWORD tiWidth; // Width of Image in pixel
DWORD tiHeight; // Height of Image in pixel
DWORD tiPhoto; // Photometric
WORD tiBps; // Bits per sample
WORD tiSf; // Sample Format
WORD tiSpp; // Sample per pixel 1-bilevel,gray scale , 2- RGB
WORD tiPC; // Planar config (1-Interleaved, 2-Planarcomp)
}tiff_infoheader_t;
int imagetotif(opj_image_t * image, const char *outfile)
{
int width, height, imgsize;
int bps,index,adjust, sgnd;
int ushift, dshift, has_alpha, force16;
TIFF *tif;
tdata_t buf;
tstrip_t strip;
tsize_t strip_size;
ushift = dshift = force16 = has_alpha = 0;
bps = image->comps[0].prec;
if(bps > 8 && bps < 16)
{
ushift = 16 - bps; dshift = bps - ushift;
bps = 16; force16 = 1;
}
if(bps != 8 && bps != 16)
{
fprintf(stderr,"imagetotif: Bits=%d, Only 8 and 16 bits implemented\n",
bps);
fprintf(stderr,"\tAborting\n");
return 1;
}
tif = TIFFOpen(outfile, "wb");
if (!tif)
{
fprintf(stderr, "imagetotif:failed to open %s for writing\n", outfile);
return 1;
}
sgnd = image->comps[0].sgnd;
adjust = sgnd ? 1 << (image->comps[0].prec - 1) : 0;
if(image->numcomps >= 3
&& image->comps[0].dx == image->comps[1].dx
&& image->comps[1].dx == image->comps[2].dx
&& image->comps[0].dy == image->comps[1].dy
&& image->comps[1].dy == image->comps[2].dy
&& image->comps[0].prec == image->comps[1].prec
&& image->comps[1].prec == image->comps[2].prec)
{
has_alpha = (image->numcomps == 4);
width = image->comps[0].w;
height = image->comps[0].h;
imgsize = width * height ;
TIFFSetField(tif, TIFFTAG_IMAGEWIDTH, width);
TIFFSetField(tif, TIFFTAG_IMAGELENGTH, height);
TIFFSetField(tif, TIFFTAG_SAMPLESPERPIXEL, 3 + has_alpha);
TIFFSetField(tif, TIFFTAG_BITSPERSAMPLE, bps);
TIFFSetField(tif, TIFFTAG_ORIENTATION, ORIENTATION_TOPLEFT);
TIFFSetField(tif, TIFFTAG_PLANARCONFIG, PLANARCONFIG_CONTIG);
TIFFSetField(tif, TIFFTAG_PHOTOMETRIC, PHOTOMETRIC_RGB);
TIFFSetField(tif, TIFFTAG_ROWSPERSTRIP, 1);
strip_size = TIFFStripSize(tif);
buf = _TIFFmalloc(strip_size);
index=0;
for(strip = 0; strip < TIFFNumberOfStrips(tif); strip++)
{
unsigned char *dat8;
tsize_t i, ssize, last_i = 0;
int step, restx;
ssize = TIFFStripSize(tif);
dat8 = (unsigned char*)buf;
if(bps == 8)
{
step = 3 + has_alpha;
restx = step - 1;
for(i=0; i < ssize - restx; i += step)
{
int r, g, b, a = 0;
if(index < imgsize)
{
r = image->comps[0].data[index];
g = image->comps[1].data[index];
b = image->comps[2].data[index];
if(has_alpha) a = image->comps[3].data[index];
if(sgnd)
{
r += adjust;
g += adjust;
b += adjust;
if(has_alpha) a += adjust;
}
dat8[i+0] = r ;
dat8[i+1] = g ;
dat8[i+2] = b ;
if(has_alpha) dat8[i+3] = a;
index++;
last_i = i + step;
}
else
break;
}//for(i = 0;)
if(last_i < ssize)
{
for(i = last_i; i < ssize; i += step)
{
int r, g, b, a = 0;
if(index < imgsize)
{
r = image->comps[0].data[index];
g = image->comps[1].data[index];
b = image->comps[2].data[index];
if(has_alpha) a = image->comps[3].data[index];
if(sgnd)
{
r += adjust;
g += adjust;
b += adjust;
if(has_alpha) a += adjust;
}
dat8[i+0] = r ;
if(i+1 < ssize) dat8[i+1] = g ; else break;
if(i+2 < ssize) dat8[i+2] = b ; else break;
if(has_alpha)
{
if(i+3 < ssize) dat8[i+3] = a ; else break;
}
index++;
}
else
break;
}//for(i)
}//if(last_i < ssize)
} //if(bps == 8)
else
if(bps == 16)
{
step = 6 + has_alpha + has_alpha;
restx = step - 1;
for(i = 0; i < ssize - restx ; i += step)
{
int r, g, b, a = 0;
if(index < imgsize)
{
r = image->comps[0].data[index];
g = image->comps[1].data[index];
b = image->comps[2].data[index];
if(has_alpha) a = image->comps[3].data[index];
if(sgnd)
{
r += adjust;
g += adjust;
b += adjust;
if(has_alpha) a += adjust;
}
if(force16)
{
r = (r<<ushift) + (r>>dshift);
g = (g<<ushift) + (g>>dshift);
b = (b<<ushift) + (b>>dshift);
if(has_alpha) a = (a<<ushift) + (a>>dshift);
}
dat8[i+0] = r;//LSB
dat8[i+1] = (r >> 8);//MSB
dat8[i+2] = g;
dat8[i+3] = (g >> 8);
dat8[i+4] = b;
dat8[i+5] = (b >> 8);
if(has_alpha)
{
dat8[i+6] = a;
dat8[i+7] = (a >> 8);
}
index++;
last_i = i + step;
}
else
break;
}//for(i = 0;)
if(last_i < ssize)
{
for(i = last_i ; i < ssize ; i += step)
{
int r, g, b, a = 0;
if(index < imgsize)
{
r = image->comps[0].data[index];
g = image->comps[1].data[index];
b = image->comps[2].data[index];
if(has_alpha) a = image->comps[3].data[index];
if(sgnd)
{
r += adjust;
g += adjust;
b += adjust;
if(has_alpha) a += adjust;
}
if(force16)
{
r = (r<<ushift) + (r>>dshift);
g = (g<<ushift) + (g>>dshift);
b = (b<<ushift) + (b>>dshift);
if(has_alpha) a = (a<<ushift) + (a>>dshift);
}
dat8[i+0] = r;//LSB
if(i+1 < ssize) dat8[i+1] = (r >> 8);else break;//MSB
if(i+2 < ssize) dat8[i+2] = g; else break;
if(i+3 < ssize) dat8[i+3] = (g >> 8);else break;
if(i+4 < ssize) dat8[i+4] = b; else break;
if(i+5 < ssize) dat8[i+5] = (b >> 8);else break;
if(has_alpha)
{
if(i+6 < ssize) dat8[i+6] = a; else break;
if(i+7 < ssize) dat8[i+7] = (a >> 8); else break;
}
index++;
}
else
break;
}//for(i)
}//if(last_i < ssize)
}//if(bps == 16)
(void)TIFFWriteEncodedStrip(tif, strip, (void*)buf, strip_size);
}//for(strip = 0; )
_TIFFfree((void*)buf);
TIFFClose(tif);
return 0;
}//RGB(A)
if(image->numcomps == 1 /* GRAY */
|| ( image->numcomps == 2 /* GRAY_ALPHA */
&& image->comps[0].dx == image->comps[1].dx
&& image->comps[0].dy == image->comps[1].dy
&& image->comps[0].prec == image->comps[1].prec))
{
int step;
has_alpha = (image->numcomps == 2);
width = image->comps[0].w;
height = image->comps[0].h;
imgsize = width * height;
/* Set tags */
TIFFSetField(tif, TIFFTAG_IMAGEWIDTH, width);
TIFFSetField(tif, TIFFTAG_IMAGELENGTH, height);
TIFFSetField(tif, TIFFTAG_SAMPLESPERPIXEL, 1 + has_alpha);
TIFFSetField(tif, TIFFTAG_BITSPERSAMPLE, bps);
TIFFSetField(tif, TIFFTAG_ORIENTATION, ORIENTATION_TOPLEFT);
TIFFSetField(tif, TIFFTAG_PLANARCONFIG, PLANARCONFIG_CONTIG);
TIFFSetField(tif, TIFFTAG_PHOTOMETRIC, PHOTOMETRIC_MINISBLACK);
TIFFSetField(tif, TIFFTAG_ROWSPERSTRIP, 1);
/* Get a buffer for the data */
strip_size = TIFFStripSize(tif);
buf = _TIFFmalloc(strip_size);
index = 0;
for(strip = 0; strip < TIFFNumberOfStrips(tif); strip++)
{
unsigned char *dat8;
tsize_t i, ssize = TIFFStripSize(tif);
dat8 = (unsigned char*)buf;
if(bps == 8)
{
step = 1 + has_alpha;
for(i=0; i < ssize; i += step)
{
if(index < imgsize)
{
int r, a = 0;
r = image->comps[0].data[index];
if(has_alpha) a = image->comps[1].data[index];
if(sgnd)
{
r += adjust;
if(has_alpha) a += adjust;
}
dat8[i+0] = r;
if(has_alpha) dat8[i+1] = a;
index++;
}
else
break;
}//for(i )
}//if(bps == 8
else
if(bps == 16)
{
step = 2 + has_alpha + has_alpha;
for(i=0; i < ssize; i += step)
{
if(index < imgsize)
{
int r, a = 0;
r = image->comps[0].data[index];
if(has_alpha) a = image->comps[1].data[index];
if(sgnd)
{
r += adjust;
if(has_alpha) a += adjust;
}
if(force16)
{
r = (r<<ushift) + (r>>dshift);
if(has_alpha) a = (a<<ushift) + (a>>dshift);
}
dat8[i+0] = r;//LSB
dat8[i+1] = r >> 8;//MSB
if(has_alpha)
{
dat8[i+2] = a;
dat8[i+3] = a >> 8;
}
index++;
}//if(index < imgsize)
else
break;
}//for(i )
}
(void)TIFFWriteEncodedStrip(tif, strip, (void*)buf, strip_size);
}//for(strip
_TIFFfree(buf);
TIFFClose(tif);
return 0;
}
TIFFClose(tif);
fprintf(stderr,"imagetotif: Bad color format.\n"
"\tOnly RGB(A) and GRAY(A) has been implemented\n");
fprintf(stderr,"\tFOUND: numcomps(%d)\n\tAborting\n",
image->numcomps);
return 1;
}/* imagetotif() */
/*
* libtiff/tif_getimage.c : 1,2,4,8,16 bitspersample accepted
* CINEMA : 12 bit precision
*/
opj_image_t* tiftoimage(const char *filename, opj_cparameters_t *parameters)
{
int subsampling_dx = parameters->subsampling_dx;
int subsampling_dy = parameters->subsampling_dy;
TIFF *tif;
tiff_infoheader_t Info;
tdata_t buf;
tstrip_t strip;
tsize_t strip_size;
int j, numcomps, w, h,index;
OPJ_COLOR_SPACE color_space;
opj_image_cmptparm_t cmptparm[4]; /* RGBA */
opj_image_t *image = NULL;
int imgsize = 0;
int has_alpha = 0;
tif = TIFFOpen(filename, "r");
if(!tif)
{
fprintf(stderr, "tiftoimage:Failed to open %s for reading\n", filename);
return 0;
}
TIFFGetField(tif, TIFFTAG_IMAGEWIDTH, &Info.tiWidth);
TIFFGetField(tif, TIFFTAG_IMAGELENGTH, &Info.tiHeight);
TIFFGetField(tif, TIFFTAG_BITSPERSAMPLE, &Info.tiBps);
TIFFGetField(tif, TIFFTAG_SAMPLEFORMAT, &Info.tiSf);
TIFFGetField(tif, TIFFTAG_SAMPLESPERPIXEL, &Info.tiSpp);
Info.tiPhoto = 0;
TIFFGetField(tif, TIFFTAG_PHOTOMETRIC, &Info.tiPhoto);
TIFFGetField(tif, TIFFTAG_PLANARCONFIG, &Info.tiPC);
w= Info.tiWidth;
h= Info.tiHeight;
{
int b, p;
if((b = Info.tiBps) != 8 && b != 16 && b != 12) b = 0;
if((p = Info.tiPhoto) != 1 && p != 2) p = 0;
if( !b || !p)
{
if( !b)
fprintf(stderr,"imagetotif: Bits=%d, Only 8 and 16 bits"
" implemented\n",Info.tiBps);
else
if( !p)
fprintf(stderr,"tiftoimage: Bad color format %d.\n\tOnly RGB(A)"
" and GRAY(A) has been implemented\n",(int) Info.tiPhoto);
fprintf(stderr,"\tAborting\n");
TIFFClose(tif);
return NULL;
}
}
{/* From: tiff-4.0.x/libtiff/tif_getimage.c : */
uint16* sampleinfo;
uint16 extrasamples;
TIFFGetFieldDefaulted(tif, TIFFTAG_EXTRASAMPLES,
&extrasamples, &sampleinfo);
if(extrasamples >= 1)
{
switch(sampleinfo[0])
{
case EXTRASAMPLE_UNSPECIFIED:
/* Workaround for some images without correct info about alpha channel
*/
if(Info.tiSpp > 3)
has_alpha = 1;
break;
case EXTRASAMPLE_ASSOCALPHA: /* data pre-multiplied */
case EXTRASAMPLE_UNASSALPHA: /* data not pre-multiplied */
has_alpha = 1;
break;
}
}
}
/* initialize image components
*/
memset(&cmptparm[0], 0, 4 * sizeof(opj_image_cmptparm_t));
if(Info.tiPhoto == PHOTOMETRIC_RGB) /* RGB(A) */
{
numcomps = 3 + has_alpha;
color_space = CLRSPC_SRGB;
for(j = 0; j < numcomps; j++)
{
if(parameters->cp_cinema)
{
cmptparm[j].prec = 12;
cmptparm[j].bpp = 12;
}
else
{
cmptparm[j].prec = Info.tiBps;
cmptparm[j].bpp = Info.tiBps;
}
cmptparm[j].dx = subsampling_dx;
cmptparm[j].dy = subsampling_dy;
cmptparm[j].w = w;
cmptparm[j].h = h;
}
image = opj_image_create(numcomps, &cmptparm[0], color_space);
if(!image)
{
TIFFClose(tif);
return NULL;
}
/* set image offset and reference grid
*/
image->x0 = parameters->image_offset_x0;
image->y0 = parameters->image_offset_y0;
image->x1 = !image->x0 ? (w - 1) * subsampling_dx + 1 :
image->x0 + (w - 1) * subsampling_dx + 1;
image->y1 = !image->y0 ? (h - 1) * subsampling_dy + 1 :
image->y0 + (h - 1) * subsampling_dy + 1;
buf = _TIFFmalloc(TIFFStripSize(tif));
strip_size=TIFFStripSize(tif);
index = 0;
imgsize = image->comps[0].w * image->comps[0].h ;
/* Read the Image components
*/
for(strip = 0; strip < TIFFNumberOfStrips(tif); strip++)
{
unsigned char *dat8;
int step;
tsize_t i, ssize;
ssize = TIFFReadEncodedStrip(tif, strip, buf, strip_size);
dat8 = (unsigned char*)buf;
if(Info.tiBps == 16)
{
step = 6 + has_alpha + has_alpha;
for(i = 0; i < ssize; i += step)
{
if(index < imgsize)
{
image->comps[0].data[index] = ( dat8[i+1] << 8 ) | dat8[i+0]; // R
image->comps[1].data[index] = ( dat8[i+3] << 8 ) | dat8[i+2]; // G
image->comps[2].data[index] = ( dat8[i+5] << 8 ) | dat8[i+4]; // B
if(has_alpha)
image->comps[3].data[index] = ( dat8[i+7] << 8 ) | dat8[i+6];
if(parameters->cp_cinema)
{
/* Rounding 16 to 12 bits
*/
image->comps[0].data[index] =
(image->comps[0].data[index] + 0x08) >> 4 ;
image->comps[1].data[index] =
(image->comps[1].data[index] + 0x08) >> 4 ;
image->comps[2].data[index] =
(image->comps[2].data[index] + 0x08) >> 4 ;
if(has_alpha)
image->comps[3].data[index] =
(image->comps[3].data[index] + 0x08) >> 4 ;
}
index++;
}
else
break;
}//for(i = 0)
}//if(Info.tiBps == 16)
else
if(Info.tiBps == 8)
{
step = 3 + has_alpha;
for(i = 0; i < ssize; i += step)
{
if(index < imgsize)
{
image->comps[0].data[index] = dat8[i+0];// R
image->comps[1].data[index] = dat8[i+1];// G
image->comps[2].data[index] = dat8[i+2];// B
if(has_alpha)
image->comps[3].data[index] = dat8[i+3];
if(parameters->cp_cinema)
{
/* Rounding 8 to 12 bits
*/
image->comps[0].data[index] = image->comps[0].data[index] << 4 ;
image->comps[1].data[index] = image->comps[1].data[index] << 4 ;
image->comps[2].data[index] = image->comps[2].data[index] << 4 ;
if(has_alpha)
image->comps[3].data[index] = image->comps[3].data[index] << 4 ;
}
index++;
}//if(index
else
break;
}//for(i )
}//if( Info.tiBps == 8)
else
if(Info.tiBps == 12)/* CINEMA file */
{
step = 9;
for(i = 0; i < ssize; i += step)
{
if((index < imgsize)&(index+1 < imgsize))
{
image->comps[0].data[index] = ( dat8[i+0]<<4 ) |(dat8[i+1]>>4);
image->comps[1].data[index] = ((dat8[i+1]& 0x0f)<< 8) | dat8[i+2];
image->comps[2].data[index] = ( dat8[i+3]<<4) |(dat8[i+4]>>4);
image->comps[0].data[index+1] = ((dat8[i+4]& 0x0f)<< 8) | dat8[i+5];
image->comps[1].data[index+1] = ( dat8[i+6] <<4) |(dat8[i+7]>>4);
image->comps[2].data[index+1] = ((dat8[i+7]& 0x0f)<< 8) | dat8[i+8];
index += 2;
}
else
break;
}//for(i )
}
}//for(strip = 0; )
_TIFFfree(buf);
TIFFClose(tif);
return image;
}//RGB(A)
if(Info.tiPhoto == PHOTOMETRIC_MINISBLACK) /* GRAY(A) */
{
numcomps = 1 + has_alpha;
color_space = CLRSPC_GRAY;
for(j = 0; j < numcomps; ++j)
{
cmptparm[j].prec = Info.tiBps;
cmptparm[j].bpp = Info.tiBps;
cmptparm[j].dx = subsampling_dx;
cmptparm[j].dy = subsampling_dy;
cmptparm[j].w = w;
cmptparm[j].h = h;
}
image = opj_image_create(numcomps, &cmptparm[0], color_space);
if(!image)
{
TIFFClose(tif);
return NULL;
}
/* set image offset and reference grid
*/
image->x0 = parameters->image_offset_x0;
image->y0 = parameters->image_offset_y0;
image->x1 = !image->x0 ? (w - 1) * subsampling_dx + 1 :
image->x0 + (w - 1) * subsampling_dx + 1;
image->y1 = !image->y0 ? (h - 1) * subsampling_dy + 1 :
image->y0 + (h - 1) * subsampling_dy + 1;
buf = _TIFFmalloc(TIFFStripSize(tif));
strip_size = TIFFStripSize(tif);
index = 0;
imgsize = image->comps[0].w * image->comps[0].h ;
/* Read the Image components
*/
for(strip = 0; strip < TIFFNumberOfStrips(tif); strip++)
{
unsigned char *dat8;
tsize_t i, ssize;
int step;
ssize = TIFFReadEncodedStrip(tif, strip, buf, strip_size);
dat8 = (unsigned char*)buf;
if(Info.tiBps == 16)
{
step = 2 + has_alpha + has_alpha;
for(i = 0; i < ssize; i += step)
{
if(index < imgsize)
{
image->comps[0].data[index] = ( dat8[i+1] << 8 ) | dat8[i+0];
if(has_alpha)
image->comps[1].data[index] = ( dat8[i+3] << 8 ) | dat8[i+2];
index++;
}
else
break;
}//for(i )
}
else
if(Info.tiBps == 8)
{
step = 1 + has_alpha;
for(i = 0; i < ssize; i += step)
{
if(index < imgsize)
{
image->comps[0].data[index] = dat8[i+0];
if(has_alpha)
image->comps[1].data[index] = dat8[i+1];
index++;
}
else
break;
}//for(i )
}
}//for(strip = 0;
_TIFFfree(buf);
TIFFClose(tif);
}//GRAY(A)
return image;
}/* tiftoimage() */
#endif /* HAVE_LIBTIFF */
/* -->> -->> -->> -->>
RAW IMAGE FORMAT
<<-- <<-- <<-- <<-- */
opj_image_t* rawtoimage(const char *filename, opj_cparameters_t *parameters, raw_cparameters_t *raw_cp) {
int subsampling_dx = parameters->subsampling_dx;
int subsampling_dy = parameters->subsampling_dy;
FILE *f = NULL;
int i, compno, numcomps, w, h;
OPJ_COLOR_SPACE color_space;
opj_image_cmptparm_t *cmptparm;
opj_image_t * image = NULL;
unsigned short ch;
if((! (raw_cp->rawWidth & raw_cp->rawHeight & raw_cp->rawComp & raw_cp->rawBitDepth)) == 0)
{
fprintf(stderr,"\nError: invalid raw image parameters\n");
fprintf(stderr,"Please use the Format option -F:\n");
fprintf(stderr,"-F rawWidth,rawHeight,rawComp,rawBitDepth,s/u (Signed/Unsigned)\n");
fprintf(stderr,"Example: -i lena.raw -o lena.j2k -F 512,512,3,8,u\n");
fprintf(stderr,"Aborting\n");
return NULL;
}
f = fopen(filename, "rb");
if (!f) {
fprintf(stderr, "Failed to open %s for reading !!\n", filename);
fprintf(stderr,"Aborting\n");
return NULL;
}
numcomps = raw_cp->rawComp;
color_space = CLRSPC_SRGB;
w = raw_cp->rawWidth;
h = raw_cp->rawHeight;
cmptparm = (opj_image_cmptparm_t*) malloc(numcomps * sizeof(opj_image_cmptparm_t));
/* initialize image components */
memset(&cmptparm[0], 0, numcomps * sizeof(opj_image_cmptparm_t));
for(i = 0; i < numcomps; i++) {
cmptparm[i].prec = raw_cp->rawBitDepth;
cmptparm[i].bpp = raw_cp->rawBitDepth;
cmptparm[i].sgnd = raw_cp->rawSigned;
cmptparm[i].dx = subsampling_dx;
cmptparm[i].dy = subsampling_dy;
cmptparm[i].w = w;
cmptparm[i].h = h;
}
/* create the image */
image = opj_image_create(numcomps, &cmptparm[0], color_space);
if(!image) {
fclose(f);
return NULL;
}
/* set image offset and reference grid */
image->x0 = parameters->image_offset_x0;
image->y0 = parameters->image_offset_y0;
image->x1 = parameters->image_offset_x0 + (w - 1) * subsampling_dx + 1;
image->y1 = parameters->image_offset_y0 + (h - 1) * subsampling_dy + 1;
if(raw_cp->rawBitDepth <= 8)
{
unsigned char value = 0;
for(compno = 0; compno < numcomps; compno++) {
for (i = 0; i < w * h; i++) {
if (!fread(&value, 1, 1, f)) {
fprintf(stderr,"Error reading raw file. End of file probably reached.\n");
return NULL;
}
image->comps[compno].data[i] = raw_cp->rawSigned?(char)value:value;
}
}
}
else if(raw_cp->rawBitDepth <= 16)
{
unsigned short value;
for(compno = 0; compno < numcomps; compno++) {
for (i = 0; i < w * h; i++) {
unsigned char temp;
if (!fread(&temp, 1, 1, f)) {
fprintf(stderr,"Error reading raw file. End of file probably reached.\n");
return NULL;
}
value = temp << 8;
if (!fread(&temp, 1, 1, f)) {
fprintf(stderr,"Error reading raw file. End of file probably reached.\n");
return NULL;
}
value += temp;
image->comps[compno].data[i] = raw_cp->rawSigned?(short)value:value;
}
}
}
else {
fprintf(stderr,"OpenJPEG cannot encode raw components with bit depth higher than 16 bits.\n");
return NULL;
}
if (fread(&ch, 1, 1, f)) {
fprintf(stderr,"Warning. End of raw file not reached... processing anyway\n");
}
fclose(f);
return image;
}
int imagetoraw(opj_image_t * image, const char *outfile)
{
FILE *rawFile = NULL;
int compno;
int w, h;
int line, row;
int *ptr;
if((image->numcomps * image->x1 * image->y1) == 0)
{
fprintf(stderr,"\nError: invalid raw image parameters\n");
return 1;
}
rawFile = fopen(outfile, "wb");
if (!rawFile) {
fprintf(stderr, "Failed to open %s for writing !!\n", outfile);
return 1;
}
fprintf(stdout,"Raw image characteristics: %d components\n", image->numcomps);
for(compno = 0; compno < image->numcomps; compno++)
{
fprintf(stdout,"Component %d characteristics: %dx%dx%d %s\n", compno, image->comps[compno].w,
image->comps[compno].h, image->comps[compno].prec, image->comps[compno].sgnd==1 ? "signed": "unsigned");
w = image->comps[compno].w;
h = image->comps[compno].h;
if(image->comps[compno].prec <= 8)
{
if(image->comps[compno].sgnd == 1)
{
signed char curr;
int mask = (1 << image->comps[compno].prec) - 1;
ptr = image->comps[compno].data;
for (line = 0; line < h; line++) {
for(row = 0; row < w; row++) {
curr = (signed char) (*ptr & mask);
fwrite(&curr, sizeof(signed char), 1, rawFile);
ptr++;
}
}
}
else if(image->comps[compno].sgnd == 0)
{
unsigned char curr;
int mask = (1 << image->comps[compno].prec) - 1;
ptr = image->comps[compno].data;
for (line = 0; line < h; line++) {
for(row = 0; row < w; row++) {
curr = (unsigned char) (*ptr & mask);
fwrite(&curr, sizeof(unsigned char), 1, rawFile);
ptr++;
}
}
}
}
else if(image->comps[compno].prec <= 16)
{
if(image->comps[compno].sgnd == 1)
{
signed short int curr;
int mask = (1 << image->comps[compno].prec) - 1;
ptr = image->comps[compno].data;
for (line = 0; line < h; line++) {
for(row = 0; row < w; row++) {
unsigned char temp;
curr = (signed short int) (*ptr & mask);
temp = (unsigned char) (curr >> 8);
fwrite(&temp, 1, 1, rawFile);
temp = (unsigned char) curr;
fwrite(&temp, 1, 1, rawFile);
ptr++;
}
}
}
else if(image->comps[compno].sgnd == 0)
{
unsigned short int curr;
int mask = (1 << image->comps[compno].prec) - 1;
ptr = image->comps[compno].data;
for (line = 0; line < h; line++) {
for(row = 0; row < w; row++) {
unsigned char temp;
curr = (unsigned short int) (*ptr & mask);
temp = (unsigned char) (curr >> 8);
fwrite(&temp, 1, 1, rawFile);
temp = (unsigned char) curr;
fwrite(&temp, 1, 1, rawFile);
ptr++;
}
}
}
}
else if (image->comps[compno].prec <= 32)
{
fprintf(stderr,"More than 16 bits per component no handled yet\n");
return 1;
}
else
{
fprintf(stderr,"Error: invalid precision: %d\n", image->comps[compno].prec);
return 1;
}
}
fclose(rawFile);
return 0;
}
#ifdef HAVE_LIBPNG
#define PNG_MAGIC "\x89PNG\x0d\x0a\x1a\x0a"
#define MAGIC_SIZE 8
/* PNG allows bits per sample: 1, 2, 4, 8, 16 */
opj_image_t *pngtoimage(const char *read_idf, opj_cparameters_t * params)
{
png_structp png;
png_infop info;
double gamma, display_exponent;
int bit_depth, interlace_type,compression_type, filter_type;
int unit;
png_uint_32 resx, resy;
unsigned int i, j;
png_uint_32 width, height;
int color_type, has_alpha, is16;
unsigned char *s;
FILE *reader;
unsigned char **rows;
/* j2k: */
opj_image_t *image;
opj_image_cmptparm_t cmptparm[4];
int sub_dx, sub_dy;
unsigned int nr_comp;
int *r, *g, *b, *a;
unsigned char sigbuf[8];
if((reader = fopen(read_idf, "rb")) == NULL)
{
fprintf(stderr,"pngtoimage: can not open %s\n",read_idf);
return NULL;
}
image = NULL; png = NULL; rows = NULL;
if(fread(sigbuf, 1, MAGIC_SIZE, reader) != MAGIC_SIZE
|| memcmp(sigbuf, PNG_MAGIC, MAGIC_SIZE) != 0)
{
fprintf(stderr,"pngtoimage: %s is no valid PNG file\n",read_idf);
goto fin;
}
/* libpng-VERSION/example.c:
* PC : screen_gamma = 2.2;
* Mac: screen_gamma = 1.7 or 1.0;
*/
display_exponent = 2.2;
if((png = png_create_read_struct(PNG_LIBPNG_VER_STRING,
NULL, NULL, NULL)) == NULL)
goto fin;
if((info = png_create_info_struct(png)) == NULL)
goto fin;
if(setjmp(png_jmpbuf(png)))
goto fin;
png_init_io(png, reader);
png_set_sig_bytes(png, MAGIC_SIZE);
png_read_info(png, info);
if(png_get_IHDR(png, info, &width, &height,
&bit_depth, &color_type, &interlace_type,
&compression_type, &filter_type) == 0)
goto fin;
/* png_set_expand():
* expand paletted images to RGB, expand grayscale images of
* less than 8-bit depth to 8-bit depth, and expand tRNS chunks
* to alpha channels.
*/
if(color_type == PNG_COLOR_TYPE_PALETTE)
png_set_expand(png);
else
if(color_type == PNG_COLOR_TYPE_GRAY && bit_depth < 8)
png_set_expand(png);
if(png_get_valid(png, info, PNG_INFO_tRNS))
png_set_expand(png);
is16 = (bit_depth == 16);
/* GRAY => RGB; GRAY_ALPHA => RGBA
*/
if(color_type == PNG_COLOR_TYPE_GRAY
|| color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
{
png_set_gray_to_rgb(png);
color_type =
(color_type == PNG_COLOR_TYPE_GRAY? PNG_COLOR_TYPE_RGB:
PNG_COLOR_TYPE_RGB_ALPHA);
}
if( !png_get_gAMA(png, info, &gamma))
gamma = 0.45455;
png_set_gamma(png, display_exponent, gamma);
png_read_update_info(png, info);
png_get_pHYs(png, info, &resx, &resy, &unit);
color_type = png_get_color_type(png, info);
has_alpha = (color_type == PNG_COLOR_TYPE_RGB_ALPHA);
nr_comp = 3 + has_alpha;
bit_depth = png_get_bit_depth(png, info);
rows = (unsigned char**)calloc(height+1, sizeof(unsigned char*));
for(i = 0; i < height; ++i)
rows[i] = (unsigned char*)malloc(png_get_rowbytes(png,info));
png_read_image(png, rows);
memset(&cmptparm, 0, 4 * sizeof(opj_image_cmptparm_t));
sub_dx = params->subsampling_dx; sub_dy = params->subsampling_dy;
for(i = 0; i < nr_comp; ++i)
{
cmptparm[i].prec = bit_depth;
/* bits_per_pixel: 8 or 16 */
cmptparm[i].bpp = bit_depth;
cmptparm[i].sgnd = 0;
cmptparm[i].dx = sub_dx;
cmptparm[i].dy = sub_dy;
cmptparm[i].w = width;
cmptparm[i].h = height;
}
image = opj_image_create(nr_comp, &cmptparm[0], CLRSPC_SRGB);
if(image == NULL) goto fin;
image->x0 = params->image_offset_x0;
image->y0 = params->image_offset_y0;
image->x1 = image->x0 + (width - 1) * sub_dx + 1 + image->x0;
image->y1 = image->y0 + (height - 1) * sub_dy + 1 + image->y0;
r = image->comps[0].data;
g = image->comps[1].data;
b = image->comps[2].data;
a = image->comps[3].data;
for(i = 0; i < height; ++i)
{
s = rows[i];
for(j = 0; j < width; ++j)
{
if(is16)
{
*r++ = s[0]<<8|s[1]; s += 2;
*g++ = s[0]<<8|s[1]; s += 2;
*b++ = s[0]<<8|s[1]; s += 2;
if(has_alpha) { *a++ = s[0]<<8|s[1]; s += 2; }
continue;
}
*r++ = *s++; *g++ = *s++; *b++ = *s++;
if(has_alpha) *a++ = *s++;
}
}
fin:
if(rows)
{
for(i = 0; i < height; ++i)
free(rows[i]);
free(rows);
}
if(png)
png_destroy_read_struct(&png, &info, NULL);
fclose(reader);
return image;
}/* pngtoimage() */
int imagetopng(opj_image_t * image, const char *write_idf)
{
FILE *writer;
png_structp png;
png_infop info;
int *red, *green, *blue, *alpha;
unsigned char *row_buf, *d;
int has_alpha, width, height, nr_comp, color_type;
int adjustR, adjustG, adjustB, x, y, fails, is16, force16;
int opj_prec, prec, ushift, dshift;
unsigned short mask = 0xffff;
png_color_8 sig_bit;
is16 = force16 = ushift = dshift = 0; fails = 1;
prec = opj_prec = image->comps[0].prec;
if(prec > 8 && prec < 16)
{
prec = 16; force16 = 1;
}
if(prec != 1 && prec != 2 && prec != 4 && prec != 8 && prec != 16)
{
fprintf(stderr,"imagetopng: can not create %s"
"\n\twrong bit_depth %d\n", write_idf, prec);
return fails;
}
writer = fopen(write_idf, "wb");
if(writer == NULL) return fails;
info = NULL; has_alpha = 0;
/* Create and initialize the png_struct with the desired error handler
* functions. If you want to use the default stderr and longjump method,
* you can supply NULL for the last three parameters. We also check that
* the library version is compatible with the one used at compile time,
* in case we are using dynamically linked libraries. REQUIRED.
*/
png = png_create_write_struct(PNG_LIBPNG_VER_STRING,
NULL, NULL, NULL);
/*png_voidp user_error_ptr, user_error_fn, user_warning_fn); */
if(png == NULL) goto fin;
/* Allocate/initialize the image information data. REQUIRED
*/
info = png_create_info_struct(png);
if(info == NULL) goto fin;
/* Set error handling. REQUIRED if you are not supplying your own
* error handling functions in the png_create_write_struct() call.
*/
if(setjmp(png_jmpbuf(png))) goto fin;
/* I/O initialization functions is REQUIRED
*/
png_init_io(png, writer);
/* Set the image information here. Width and height are up to 2^31,
* bit_depth is one of 1, 2, 4, 8, or 16, but valid values also depend on
* the color_type selected. color_type is one of PNG_COLOR_TYPE_GRAY,
* PNG_COLOR_TYPE_GRAY_ALPHA, PNG_COLOR_TYPE_PALETTE, PNG_COLOR_TYPE_RGB,
* or PNG_COLOR_TYPE_RGB_ALPHA. interlace is either PNG_INTERLACE_NONE or
* PNG_INTERLACE_ADAM7, and the compression_type and filter_type MUST
* currently be PNG_COMPRESSION_TYPE_BASE and PNG_FILTER_TYPE_BASE.
* REQUIRED
*/
png_set_compression_level(png, Z_BEST_COMPRESSION);
if(prec == 16) mask = 0xffff;
else
if(prec == 8) mask = 0x00ff;
else
if(prec == 4) mask = 0x000f;
else
if(prec == 2) mask = 0x0003;
else
if(prec == 1) mask = 0x0001;
nr_comp = image->numcomps;
if(nr_comp >= 3
&& image->comps[0].dx == image->comps[1].dx
&& image->comps[1].dx == image->comps[2].dx
&& image->comps[0].dy == image->comps[1].dy
&& image->comps[1].dy == image->comps[2].dy
&& image->comps[0].prec == image->comps[1].prec
&& image->comps[1].prec == image->comps[2].prec)
{
int v;
has_alpha = (nr_comp > 3);
is16 = (prec == 16);
width = image->comps[0].w;
height = image->comps[0].h;
red = image->comps[0].data;
green = image->comps[1].data;
blue = image->comps[2].data;
sig_bit.red = sig_bit.green = sig_bit.blue = prec;
if(has_alpha)
{
sig_bit.alpha = prec;
alpha = image->comps[3].data;
color_type = PNG_COLOR_TYPE_RGB_ALPHA;
}
else
{
sig_bit.alpha = 0; alpha = NULL;
color_type = PNG_COLOR_TYPE_RGB;
}
png_set_sBIT(png, info, &sig_bit);
png_set_IHDR(png, info, width, height, prec,
color_type,
PNG_INTERLACE_NONE,
PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE);
/*=============================*/
png_write_info(png, info);
/*=============================*/
if(opj_prec < 8)
{
png_set_packing(png);
}
if(force16)
{
ushift = 16 - opj_prec; dshift = opj_prec - ushift;
}
adjustR = (image->comps[0].sgnd ? 1 << (image->comps[0].prec - 1) : 0);
adjustG = (image->comps[1].sgnd ? 1 << (image->comps[1].prec - 1) : 0);
adjustB = (image->comps[2].sgnd ? 1 << (image->comps[2].prec - 1) : 0);
row_buf = (unsigned char*)malloc(width * nr_comp * 2);
for(y = 0; y < height; ++y)
{
d = row_buf;
for(x = 0; x < width; ++x)
{
if(is16)
{
v = *red + adjustR; ++red;
if(force16) { v = (v<<ushift) + (v>>dshift); }
*d++ = (unsigned char)(v>>8); *d++ = (unsigned char)v;
v = *green + adjustG; ++green;
if(force16) { v = (v<<ushift) + (v>>dshift); }
*d++ = (unsigned char)(v>>8); *d++ = (unsigned char)v;
v = *blue + adjustB; ++blue;
if(force16) { v = (v<<ushift) + (v>>dshift); }
*d++ = (unsigned char)(v>>8); *d++ = (unsigned char)v;
if(has_alpha)
{
v = *alpha++;
if(force16) { v = (v<<ushift) + (v>>dshift); }
*d++ = (unsigned char)(v>>8); *d++ = (unsigned char)v;
}
continue;
}
*d++ = (unsigned char)((*red + adjustR) & mask); ++red;
*d++ = (unsigned char)((*green + adjustG) & mask); ++green;
*d++ = (unsigned char)((*blue + adjustB) & mask); ++blue;
if(has_alpha)
{
*d++ = (unsigned char)(*alpha & mask); ++alpha;
}
} /* for(x) */
png_write_row(png, row_buf);
} /* for(y) */
free(row_buf);
}/* nr_comp >= 3 */
else
if(nr_comp == 1 /* GRAY */
|| ( nr_comp == 2 /* GRAY_ALPHA */
&& image->comps[0].dx == image->comps[1].dx
&& image->comps[0].dy == image->comps[1].dy
&& image->comps[0].prec == image->comps[1].prec))
{
int v;
red = image->comps[0].data;
if(force16)
{
ushift = 16 - opj_prec; dshift = opj_prec - ushift;
}
sig_bit.gray = prec;
sig_bit.red = sig_bit.green = sig_bit.blue = sig_bit.alpha = 0;
alpha = NULL;
color_type = PNG_COLOR_TYPE_GRAY;
if(nr_comp == 2)
{
has_alpha = 1; sig_bit.alpha = prec;
alpha = image->comps[1].data;
color_type = PNG_COLOR_TYPE_GRAY_ALPHA;
}
width = image->comps[0].w;
height = image->comps[0].h;
png_set_IHDR(png, info, width, height, sig_bit.gray,
color_type,
PNG_INTERLACE_NONE,
PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE);
png_set_sBIT(png, info, &sig_bit);
/*=============================*/
png_write_info(png, info);
/*=============================*/
adjustR = (image->comps[0].sgnd ? 1 << (image->comps[0].prec - 1) : 0);
if(opj_prec < 8)
{
png_set_packing(png);
}
if(prec > 8)
{
row_buf = (unsigned char*)
malloc(width * nr_comp * sizeof(unsigned short));
for(y = 0; y < height; ++y)
{
d = row_buf;
for(x = 0; x < width; ++x)
{
v = *red + adjustR; ++red;
if(force16) { v = (v<<ushift) + (v>>dshift); }
*d++ = (unsigned char)(v>>8); *d++ = (unsigned char)v;
if(has_alpha)
{
v = *alpha++;
if(force16) { v = (v<<ushift) + (v>>dshift); }
*d++ = (unsigned char)(v>>8); *d++ = (unsigned char)v;
}
}/* for(x) */
png_write_row(png, row_buf);
} /* for(y) */
free(row_buf);
}
else /* prec <= 8 */
{
row_buf = (unsigned char*)calloc(width, nr_comp * 2);
for(y = 0; y < height; ++y)
{
d = row_buf;
for(x = 0; x < width; ++x)
{
*d++ = (unsigned char)((*red + adjustR) & mask); ++red;
if(has_alpha)
{
*d++ = (unsigned char)(*alpha & mask); ++alpha;
}
}/* for(x) */
png_write_row(png, row_buf);
} /* for(y) */
free(row_buf);
}
}
else
{
fprintf(stderr,"imagetopng: can not create %s\n",write_idf);
goto fin;
}
png_write_end(png, info);
fails = 0;
fin:
if(png)
{
png_destroy_write_struct(&png, &info);
}
fclose(writer);
if(fails) remove(write_idf);
return fails;
}/* imagetopng() */
#endif /* HAVE_LIBPNG */
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