/*
* The copyright in this software is being made available under the 2-clauses
* BSD License, included below. This software may be subject to other third
* party and contributor rights, including patent rights, and no such rights
* are granted under this license.
*
* Copyright (c) 2002-2014, Universite catholique de Louvain (UCL), Belgium
* Copyright (c) 2002-2014, Professor Benoit Macq
* Copyright (c) 2001-2003, David Janssens
* Copyright (c) 2002-2003, Yannick Verschueren
* Copyright (c) 2003-2007, Francois-Olivier Devaux
* Copyright (c) 2003-2014, 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_apps_config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <limits.h>
#ifdef OPJ_HAVE_LIBTIFF
#include <tiffio.h>
#endif /* OPJ_HAVE_LIBTIFF */
#ifdef OPJ_HAVE_LIBPNG
#include <zlib.h>
#include <png.h>
#endif /* OPJ_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 OPJ_BIG_ENDIAN
return (((val & 0xff) << 8) + (val >> 8));
#else
return (val);
#endif
}
#define TGA_HEADER_SIZE 18
static 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");
free(tga);
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;
}
#ifdef OPJ_BIG_ENDIAN
static inline uint16_t swap16(uint16_t x)
{
return (((x & 0x00ffU) << 8) | ((x & 0xff00U) >> 8));
}
#endif
static 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;
#ifndef OPJ_BIG_ENDIAN
if (fwrite(&image_w, 2, 1, fp) != 1) {
goto fails;
}
if (fwrite(&image_h, 2, 1, fp) != 1) {
goto fails;
}
#else
image_w = swap16(image_w);
image_h = swap16(image_h);
if (fwrite(&image_w, 2, 1, fp) != 1) {
goto fails;
}
if (fwrite(&image_h, 2, 1, fp) != 1) {
goto fails;
}
#endif
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, adjustR, adjustG = 0, adjustB = 0;
unsigned int alpha_channel;
float r, g, b, a;
unsigned char value;
float scale;
FILE *fdest;
size_t res;
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);
adjustR = (image->comps[0].sgnd ? 1 << (image->comps[0].prec - 1) : 0);
if (image->numcomps >= 3) {
adjustG = (image->comps[1].sgnd ? 1 << (image->comps[1].prec - 1) : 0);
adjustB = (image->comps[2].sgnd ? 1 << (image->comps[2].prec - 1) : 0);
}
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] + adjustR);
if (image->numcomps > 2) {
g = (float)(image->comps[1].data[index] + adjustG);
b = (float)(image->comps[2].data[index] + adjustB);
} else { /* Greyscale ... */
g = r;
b = r;
}
/* TGA format writes BGR ... */
value = (unsigned char)(b * scale);
res = fwrite(&value, 1, 1, fdest);
if (res < 1) {
fprintf(stderr, "failed to write 1 byte for %s\n", outfile);
return 1;
}
value = (unsigned char)(g * scale);
res = fwrite(&value, 1, 1, fdest);
if (res < 1) {
fprintf(stderr, "failed to write 1 byte for %s\n", outfile);
return 1;
}
value = (unsigned char)(r * scale);
res = fwrite(&value, 1, 1, fdest);
if (res < 1) {
fprintf(stderr, "failed to write 1 byte for %s\n", outfile);
return 1;
}
if (write_alpha) {
a = (float)(image->comps[alpha_channel].data[index]);
value = (unsigned char)(a * scale);
res = fwrite(&value, 1, 1, fdest);
if (res < 1) {
fprintf(stderr, "failed to write 1 byte for %s\n", outfile);
return 1;
}
}
}
}
return 0;
}
/* -->> -->> -->> -->>
BMP IMAGE FORMAT
<<-- <<-- <<-- <<-- */
/* WORD defines a two byte word */
typedef unsigned short int WORD;
/* DWORD defines a four byte word */
typedef unsigned 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; /* Height 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 %d\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) {
fclose(IN);
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->comps[0].prec < 8) {
fprintf(stderr, "Unsupported precision: %d\n", image->comps[0].prec);
return 1;
}
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
<<-- <<-- <<-- <<-- */
static 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;
}
static 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;
}
}
static 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;
int adjustS, ushift, dshift, force8;
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%31[ \t]%c%c%31[ \t+-]%d%31[ \t]%d%31[ \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");
fclose(f);
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");
fclose(f);
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;
}
if (prec < 8) {
force8 = 1;
ushift = 8 - prec;
dshift = prec - ushift;
if (cmptparm.sgnd) {
adjustS = (1 << (prec - 1));
} else {
adjustS = 0;
}
cmptparm.sgnd = 0;
prec = 8;
} else {
ushift = dshift = force8 = adjustS = 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 (force8) {
v = readuchar(f) + adjustS;
v = (v << ushift) + (v >> dshift);
comp->data[i] = (unsigned char)v;
if (v > max) {
max = v;
}
continue;
}
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;
size_t res;
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;
}
/* don't 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));
res = fwrite(&byte, 1, 1, fdest);
if (res < 1) {
fprintf(stderr, "failed to write 1 byte for %s\n", name);
fclose(fdest);
return 1;
}
}
}
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;
}
/* This limitation could be removed by making sure to use size_t below */
if (header_info.height != 0 &&
header_info.width > INT_MAX / header_info.height) {
fprintf(stderr, "pnmtoimage:Image %dx%d too big!\n",
header_info.width, header_info.height);
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;
alpha = NULL;
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);
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 OPJ_HAVE_LIBTIFF
/* -->> -->> -->> -->>
TIFF IMAGE FORMAT
<<-- <<-- <<-- <<-- */
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;
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;
unsigned short tiBps, tiPhoto, tiSf, tiSpp, tiPC;
unsigned int tiWidth, tiHeight;
tif = TIFFOpen(filename, "r");
if (!tif) {
fprintf(stderr, "tiftoimage:Failed to open %s for reading\n", filename);
return 0;
}
tiBps = tiPhoto = tiSf = tiSpp = tiPC = 0;
tiWidth = tiHeight = 0;
TIFFGetField(tif, TIFFTAG_IMAGEWIDTH, &tiWidth);
TIFFGetField(tif, TIFFTAG_IMAGELENGTH, &tiHeight);
TIFFGetField(tif, TIFFTAG_BITSPERSAMPLE, &tiBps);
TIFFGetField(tif, TIFFTAG_SAMPLEFORMAT, &tiSf);
TIFFGetField(tif, TIFFTAG_SAMPLESPERPIXEL, &tiSpp);
TIFFGetField(tif, TIFFTAG_PHOTOMETRIC, &tiPhoto);
TIFFGetField(tif, TIFFTAG_PLANARCONFIG, &tiPC);
w = tiWidth;
h = tiHeight;
{
unsigned short b = tiBps, p = tiPhoto;
if (tiBps != 8 && tiBps != 16 && tiBps != 12) {
b = 0;
}
if (tiPhoto != 1 && tiPhoto != 2) {
p = 0;
}
if (!b || !p) {
if (!b)
fprintf(stderr, "imagetotif: Bits=%d, Only 8 and 16 bits"
" implemented\n", tiBps);
else if (!p)
fprintf(stderr, "tiftoimage: Bad color format %d.\n\tOnly RGB(A)"
" and GRAY(A) has been implemented\n", (int) 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 (tiSpp > 3) {
has_alpha = 1;
}
break;
case EXTRASAMPLE_ASSOCALPHA: /* data pre-multiplied */
case EXTRASAMPLE_UNASSALPHA: /* data not pre-multiplied */
has_alpha = 1;
break;
}
} else /* extrasamples == 0 */
if (tiSpp == 4 || tiSpp == 2) {
has_alpha = 1;
}
}
/* initialize image components
*/
memset(&cmptparm[0], 0, 4 * sizeof(opj_image_cmptparm_t));
if (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 = tiBps;
cmptparm[j].bpp = 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 (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(tiBps == 16)*/
else if (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( tiBps == 8)*/
else if (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 (tiPhoto == PHOTOMETRIC_MINISBLACK) { /* GRAY(A) */
numcomps = 1 + has_alpha;
color_space = CLRSPC_GRAY;
for (j = 0; j < numcomps; ++j) {
cmptparm[j].prec = tiBps;
cmptparm[j].bpp = 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 (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 (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 /* OPJ_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");
fclose(f);
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");
fclose(f);
return NULL;
}
value = temp << 8;
if (!fread(&temp, 1, 1, f)) {
fprintf(stderr, "Error reading raw file. End of file probably reached.\n");
fclose(f);
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");
fclose(f);
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;
size_t res;
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);
res = fwrite(&curr, sizeof(signed char), 1, rawFile);
if (res < 1) {
fprintf(stderr, "failed to write 1 byte for %s\n", outfile);
return 1;
}
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);
res = fwrite(&curr, sizeof(unsigned char), 1, rawFile);
if (res < 1) {
fprintf(stderr, "failed to write 1 byte for %s\n", outfile);
return 1;
}
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);
res = fwrite(&temp, 1, 1, rawFile);
if (res < 1) {
fprintf(stderr, "failed to write 1 byte for %s\n", outfile);
return 1;
}
temp = (unsigned char) curr;
res = fwrite(&temp, 1, 1, rawFile);
if (res < 1) {
fprintf(stderr, "failed to write 1 byte for %s\n", outfile);
return 1;
}
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);
res = fwrite(&temp, 1, 1, rawFile);
if (res < 1) {
fprintf(stderr, "failed to write 1 byte for %s\n", outfile);
return 1;
}
temp = (unsigned char) curr;
res = fwrite(&temp, 1, 1, rawFile);
if (res < 1) {
fprintf(stderr, "failed to write 1 byte for %s\n", outfile);
return 1;
}
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 OPJ_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, adjustA, x, y, fails;
int prec, ushift, dshift, is16, force16, force8;
unsigned short mask = 0xffff;
png_color_8 sig_bit;
is16 = force16 = force8 = ushift = dshift = 0;
fails = 1;
prec = image->comps[0].prec;
nr_comp = image->numcomps;
if (prec > 8 && prec < 16) {
ushift = 16 - prec;
dshift = prec - ushift;
prec = 16;
force16 = 1;
} else if (prec < 8 && nr_comp > 1) { /* GRAY_ALPHA, RGB, RGB_ALPHA */
ushift = 8 - prec;
dshift = 8 - ushift;
prec = 8;
force8 = 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
*
* ERRORS:
*
* color_type == PNG_COLOR_TYPE_PALETTE && bit_depth > 8
* color_type == PNG_COLOR_TYPE_RGB && bit_depth < 8
* color_type == PNG_COLOR_TYPE_GRAY_ALPHA && bit_depth < 8
* color_type == PNG_COLOR_TYPE_RGB_ALPHA) && bit_depth < 8
*
*/
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;
}
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;
adjustA = (image->comps[3].sgnd ? 1 << (image->comps[3].prec - 1) : 0);
} else {
sig_bit.alpha = 0;
alpha = NULL;
color_type = PNG_COLOR_TYPE_RGB;
adjustA = 0;
}
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 (prec < 8) {
png_set_packing(png);
}
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 + adjustA;
++alpha;
if (force16) {
v = (v << ushift) + (v >> dshift);
}
*d++ = (unsigned char)(v >> 8);
*d++ = (unsigned char)v;
}
continue;
}/* if(is16) */
v = *red + adjustR;
++red;
if (force8) {
v = (v << ushift) + (v >> dshift);
}
*d++ = (unsigned char)(v & mask);
v = *green + adjustG;
++green;
if (force8) {
v = (v << ushift) + (v >> dshift);
}
*d++ = (unsigned char)(v & mask);
v = *blue + adjustB;
++blue;
if (force8) {
v = (v << ushift) + (v >> dshift);
}
*d++ = (unsigned char)(v & mask);
if (has_alpha) {
v = *alpha + adjustA;
++alpha;
if (force8) {
v = (v << ushift) + (v >> dshift);
}
*d++ = (unsigned char)(v & mask);
}
} /* 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;
sig_bit.gray = prec;
sig_bit.red = sig_bit.green = sig_bit.blue = sig_bit.alpha = 0;
alpha = NULL;
adjustA = 0;
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;
adjustA = (image->comps[1].sgnd ? 1 << (image->comps[1].prec - 1) : 0);
}
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 (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) {
v = *red + adjustR;
++red;
if (force8) {
v = (v << ushift) + (v >> dshift);
}
*d++ = (unsigned char)(v & mask);
if (has_alpha) {
v = *alpha + adjustA;
++alpha;
if (force8) {
v = (v << ushift) + (v >> dshift);
}
*d++ = (unsigned char)(v & mask);
}
}/* 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 /* OPJ_HAVE_LIBPNG */