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openjpeg/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
* 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 <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "openjpeg.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;
}
/*
* Divide an integer by a power of 2 and round upwards.
*
* a divided by 2^b
*/
static int int_ceildivpow2(int a, int b) {
return (a + (1 << b) - 1) >> b;
}
/*
* Divide an integer and round upwards.
*
* a divided by b
*/
static int int_ceildiv(int a, int b) {
return (a + b - 1) / b;
}
/* -->> -->> -->> -->>
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, not_end_file = 1;
unsigned int line = 0, col = 0;
unsigned char v, v2;
DWORD W, H;
IN = fopen(filename, "rb");
if (!IN) {
fprintf(stderr, "Failed to open %s for reading !!\n", filename);
return 0;
}
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");
return 0;
} else {
/* 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;
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));
fread(RGB, sizeof(unsigned char), (3 * W + PAD) * H, IN);
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);
} else if (Info_h.biBitCount == 8 && Info_h.biCompression == 0) {
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));
for (j = 0; j < Info_h.biClrUsed; j++) {
table_B[j] = getc(IN);
table_G[j] = getc(IN);
table_R[j] = getc(IN);
getc(IN);
if (table_R[j] != table_G[j] && table_R[j] != table_B[j] && table_G[j] != table_B[j])
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);
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));
fread(RGB, sizeof(unsigned char), W * H, IN);
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);
} else if (Info_h.biBitCount == 8 && Info_h.biCompression == 1) {
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));
for (j = 0; j < Info_h.biClrUsed; j++) {
table_B[j] = getc(IN);
table_G[j] = getc(IN);
table_R[j] = getc(IN);
getc(IN);
if (table_R[j] != table_G[j] && table_R[j] != table_B[j] && table_G[j] != table_B[j])
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);
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);
RGB = (unsigned char *) malloc(Info_h.biWidth * Info_h.biHeight * sizeof(unsigned char));
while (not_end_file) {
v = getc(IN);
if (v) {
v2 = getc(IN);
for (i = 0; i < (int) v; i++) {
RGB[line * Info_h.biWidth + col] = v2;
col++;
}
} else {
v = getc(IN);
switch (v) {
case 0:
col = 0;
line++;
break;
case 1:
line++;
not_end_file = 0;
break;
case 2:
fprintf(stderr,"No Delta supported\n");
opj_image_destroy(image);
fclose(IN);
return NULL;
default:
for (i = 0; i < v; i++) {
v2 = getc(IN);
RGB[line * Info_h.biWidth + col] = v2;
col++;
}
if (v % 2)
v2 = getc(IN);
break;
}
}
}
if (gray_scale) {
index = 0;
for (line = 0; line < Info_h.biHeight; line++) {
for (col = 0; col < Info_h.biWidth; col++) {
image->comps[0].data[index] = table_R[(int)RGB[(Info_h.biHeight - line - 1) * Info_h.biWidth + col]];
index++;
}
}
} else {
index = 0;
for (line = 0; line < Info_h.biHeight; line++) {
for (col = 0; col < Info_h.biWidth; col++) {
unsigned char pixel_index = (int)RGB[(Info_h.biHeight - line - 1) * Info_h.biWidth + col];
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);
} 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, wr, h, hr;
int i, pad;
FILE *fdest = NULL;
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 = int_ceildiv(image->x1 - image->x0, image->comps[0].dx); */
/* wr = int_ceildiv(int_ceildivpow2(image->x1 - image->x0,image->factor), image->comps[0].dx); */
w = image->comps[0].w;
wr = int_ceildivpow2(image->comps[0].w, image->comps[0].factor);
/* h = int_ceildiv(image->y1 - image->y0, image->comps[0].dy); */
/* hr = int_ceildiv(int_ceildivpow2(image->y1 - image->y0,image->factor), image->comps[0].dy); */
h = image->comps[0].h;
hr = int_ceildivpow2(image->comps[0].h, image->comps[0].factor);
fprintf(fdest, "BM");
/* FILE HEADER */
/* ------------- */
fprintf(fdest, "%c%c%c%c",
(unsigned char) (hr * wr * 3 + 3 * hr * (wr % 2) + 54) & 0xff,
(unsigned char) ((hr * wr * 3 + 3 * hr * (wr % 2) + 54) >> 8) & 0xff,
(unsigned char) ((hr * wr * 3 + 3 * hr * (wr % 2) + 54) >> 16) & 0xff,
(unsigned char) ((hr * wr * 3 + 3 * hr * (wr % 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) ((wr) & 0xff),
(unsigned char) ((wr) >> 8) & 0xff,
(unsigned char) ((wr) >> 16) & 0xff,
(unsigned char) ((wr) >> 24) & 0xff);
fprintf(fdest, "%c%c%c%c", (unsigned char) ((hr) & 0xff),
(unsigned char) ((hr) >> 8) & 0xff,
(unsigned char) ((hr) >> 16) & 0xff,
(unsigned char) ((hr) >> 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 * hr * wr + 3 * hr * (wr % 2)) & 0xff,
(unsigned char) ((hr * wr * 3 + 3 * hr * (wr % 2)) >> 8) & 0xff,
(unsigned char) ((hr * wr * 3 + 3 * hr * (wr % 2)) >> 16) & 0xff,
(unsigned char) ((hr * wr * 3 + 3 * hr * (wr % 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);
for (i = 0; i < wr * hr; i++) {
unsigned char R, G, B;
/* a modifier */
/* R = image->comps[0].data[w * h - ((i) / (w) + 1) * w + (i) % (w)]; */
R = image->comps[0].data[w * hr - ((i) / (wr) + 1) * w + (i) % (wr)];
/* G = image->comps[1].data[w * h - ((i) / (w) + 1) * w + (i) % (w)]; */
G = image->comps[1].data[w * hr - ((i) / (wr) + 1) * w + (i) % (wr)];
/* B = image->comps[2].data[w * h - ((i) / (w) + 1) * w + (i) % (w)]; */
B = image->comps[2].data[w * hr - ((i) / (wr) + 1) * w + (i) % (wr)];
fprintf(fdest, "%c%c%c", B, G, R);
if ((i + 1) % wr == 0) {
for (pad = (3 * wr) % 4 ? 4 - (3 * wr) % 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 = int_ceildiv(image->x1 - image->x0, image->comps[0].dx); */
/* wr = int_ceildiv(int_ceildivpow2(image->x1 - image->x0,image->factor), image->comps[0].dx); */
w = image->comps[0].w;
wr = int_ceildivpow2(image->comps[0].w, image->comps[0].factor);
/* h = int_ceildiv(image->y1 - image->y0, image->comps[0].dy); */
/* hr = int_ceildiv(int_ceildivpow2(image->y1 - image->y0,image->factor), image->comps[0].dy); */
h = image->comps[0].h;
hr = int_ceildivpow2(image->comps[0].h, image->comps[0].factor);
fprintf(fdest, "BM");
/* FILE HEADER */
/* ------------- */
fprintf(fdest, "%c%c%c%c", (unsigned char) (hr * wr + 54 + 1024 + hr * (wr % 2)) & 0xff,
(unsigned char) ((hr * wr + 54 + 1024 + hr * (wr % 2)) >> 8) & 0xff,
(unsigned char) ((hr * wr + 54 + 1024 + hr * (wr % 2)) >> 16) & 0xff,
(unsigned char) ((hr * wr + 54 + 1024 + wr * (wr % 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) ((wr) & 0xff),
(unsigned char) ((wr) >> 8) & 0xff,
(unsigned char) ((wr) >> 16) & 0xff,
(unsigned char) ((wr) >> 24) & 0xff);
fprintf(fdest, "%c%c%c%c", (unsigned char) ((hr) & 0xff),
(unsigned char) ((hr) >> 8) & 0xff,
(unsigned char) ((hr) >> 16) & 0xff,
(unsigned char) ((hr) >> 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) (hr * wr + hr * (wr % 2)) & 0xff,
(unsigned char) ((hr * wr + hr * (wr % 2)) >> 8) & 0xff,
(unsigned char) ((hr * wr + hr * (wr % 2)) >> 16) & 0xff,
(unsigned char) ((hr * wr + hr * (wr % 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);
for (i = 0; i < 256; i++) {
fprintf(fdest, "%c%c%c%c", i, i, i, 0);
}
for (i = 0; i < wr * hr; i++) {
/* a modifier !! */
/* fprintf(fdest, "%c", image->comps[0].data[w * h - ((i) / (w) + 1) * w + (i) % (w)]); */
fprintf(fdest, "%c", image->comps[0].data[w * hr - ((i) / (wr) + 1) * w + (i) % (wr)]);
/*if (((i + 1) % w == 0 && w % 2))
fprintf(fdest, "%c", 0); */
if ((i + 1) % wr == 0) {
for (pad = wr % 4 ? 4 - wr % 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;
fread(&c1, 1, 1, f);
return c1;
}
unsigned short readushort(FILE * f, int bigendian)
{
unsigned char c1, c2;
fread(&c1, 1, 1, f);
fread(&c2, 1, 1, f);
if (bigendian)
return (c1 << 8) + c2;
else
return (c2 << 8) + c1;
}
unsigned int readuint(FILE * f, int bigendian)
{
unsigned char c1, c2, c3, c4;
fread(&c1, 1, 1, f);
fread(&c2, 1, 1, f);
fread(&c3, 1, 1, f);
fread(&c4, 1, 1, f);
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);
fscanf(f, "PG%[ \t]%c%c%[ \t+-]%d%[ \t]%d%[ \t]%d",temp,&endian1,&endian2,signtmp,&prec,temp,&w,temp,&h);
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, wr, h, hr;
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 = int_ceildiv(image->x1 - image->x0, comp->dx); */
/* wr = int_ceildiv(int_ceildivpow2(image->x1 - image->x0,image->factor), comp->dx); */
w = image->comps[compno].w;
wr = int_ceildivpow2(image->comps[compno].w, image->comps[compno].factor);
/* h = int_ceildiv(image->y1 - image->y0, comp->dy); */
/* hr = int_ceildiv(int_ceildivpow2(image->y1 - image->y0,image->factor), comp->dy); */
h = image->comps[compno].h;
hr = int_ceildivpow2(image->comps[compno].h, image->comps[compno].factor);
fprintf(fdest, "PG ML %c %d %d %d\n", comp->sgnd ? '-' : '+', comp->prec, wr, hr);
if (comp->prec <= 8) {
nbytes = 1;
} else if (comp->prec <= 16) {
nbytes = 2;
} else {
nbytes = 4;
}
for (i = 0; i < wr * hr; i++) {
int v = image->comps[compno].data[i / wr * w + i % wr];
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
<<-- <<-- <<-- <<-- */
opj_image_t* pnmtoimage(const char *filename, opj_cparameters_t *parameters) {
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[3]; /* maximum of 3 components */
opj_image_t * image = NULL;
char value;
f = fopen(filename, "rb");
if (!f) {
fprintf(stderr, "Failed to open %s for reading !!\n", filename);
return 0;
}
if (fgetc(f) != 'P')
return 0;
value = fgetc(f);
switch(value) {
case '2': /* greyscale image type */
case '5':
numcomps = 1;
color_space = CLRSPC_GRAY;
break;
case '3': /* RGB image type */
case '6':
numcomps = 3;
color_space = CLRSPC_SRGB;
break;
default:
fclose(f);
return NULL;
}
fgetc(f);
/* skip comments */
while(fgetc(f) == '#') while(fgetc(f) != '\n');
fseek(f, -1, SEEK_CUR);
fscanf(f, "%d %d\n255", &w, &h);
fgetc(f); /* <cr><lf> */
/* 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(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;
/* set image data */
if ((value == '2') || (value == '3')) { /* ASCII */
for (i = 0; i < w * h; i++) {
for(compno = 0; compno < numcomps; compno++) {
unsigned int index = 0;
fscanf(f, "%u", &index);
/* compno : 0 = GREY, (0, 1, 2) = (R, G, B) */
image->comps[compno].data[i] = index;
}
}
} else if ((value == '5') || (value == '6')) { /* BINARY */
for (i = 0; i < w * h; i++) {
for(compno = 0; compno < numcomps; compno++) {
unsigned char index = 0;
fread(&index, 1, 1, f);
/* compno : 0 = GREY, (0, 1, 2) = (R, G, B) */
image->comps[compno].data[i] = index;
}
}
}
fclose(f);
return image;
}
int imagetopnm(opj_image_t * image, const char *outfile) {
int w, wr, wrr, h, hr, hrr, max;
int i, compno;
int adjust;
FILE *fdest = NULL;
char S2;
const char *tmp = outfile;
while (*tmp) {
tmp++;
}
tmp--;
tmp--;
S2 = *tmp;
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
&& S2 !='g' && S2 !='G') {
fdest = fopen(outfile, "wb");
if (!fdest) {
fprintf(stderr, "ERROR -> failed to open %s for writing\n", outfile);
return 1;
}
w = int_ceildiv(image->x1 - image->x0, image->comps[0].dx);
/* wr = int_ceildiv(int_ceildivpow2(image->x1 - image->x0,image->factor),image->comps[0].dx); */
wr = image->comps[0].w;
wrr = int_ceildivpow2(image->comps[0].w, image->comps[0].factor);
h = int_ceildiv(image->y1 - image->y0, image->comps[0].dy);
/* hr = int_ceildiv(int_ceildivpow2(image->y1 - image->y0,image->factor), image->comps[0].dy); */
hr = image->comps[0].h;
hrr = int_ceildivpow2(image->comps[0].h, image->comps[0].factor);
max = image->comps[0].prec > 8 ? 255 : (1 << image->comps[0].prec) - 1;
image->comps[0].x0 = int_ceildivpow2(image->comps[0].x0 - int_ceildiv(image->x0, image->comps[0].dx), image->comps[0].factor);
image->comps[0].y0 = int_ceildivpow2(image->comps[0].y0 - int_ceildiv(image->y0, image->comps[0].dy), image->comps[0].factor);
fprintf(fdest, "P6\n%d %d\n%d\n", wrr, hrr, max);
adjust = image->comps[0].prec > 8 ? image->comps[0].prec - 8 : 0;
for (i = 0; i < wrr * hrr; i++) {
int r, g, b;
unsigned char rc,gc,bc;
r = image->comps[0].data[i / wrr * wr + i % wrr];
r += (image->comps[0].sgnd ? 1 << (image->comps[0].prec - 1) : 0);
rc = (unsigned char) ((r >> adjust)+((r >> (adjust-1))%2));
g = image->comps[1].data[i / wrr * wr + i % wrr];
g += (image->comps[1].sgnd ? 1 << (image->comps[1].prec - 1) : 0);
gc = (unsigned char) ((g >> adjust)+((g >> (adjust-1))%2));
b = image->comps[2].data[i / wrr * wr + i % wrr];
b += (image->comps[2].sgnd ? 1 << (image->comps[2].prec - 1) : 0);
bc = (unsigned char) ((b >> adjust)+((b >> (adjust-1))%2));
fprintf(fdest, "%c%c%c", rc, gc, bc);
}
fclose(fdest);
} else {
int ncomp=(S2=='g' || S2=='G')?1:image->numcomps;
if (image->numcomps>ncomp) {
fprintf(stderr,"WARNING -> [PGM files] Only the first component\n");
fprintf(stderr," is written to the file\n");
}
for (compno = 0; compno < ncomp; compno++) {
char name[256];
if (ncomp > 1) {
sprintf(name, "%d.%s", compno, outfile);
} else {
sprintf(name, "%s", outfile);
}
fdest = fopen(name, "wb");
if (!fdest) {
fprintf(stderr, "ERROR -> failed to open %s for writing\n", name);
return 1;
}
w = int_ceildiv(image->x1 - image->x0, image->comps[compno].dx);
/* wr = int_ceildiv(int_ceildivpow2(image->x1 - image->x0,image->factor),image->comps[compno].dx); */
wr = image->comps[compno].w;
wrr = int_ceildivpow2(image->comps[compno].w, image->comps[compno].factor);
h = int_ceildiv(image->y1 - image->y0, image->comps[compno].dy);
/* hr = int_ceildiv(int_ceildivpow2(image->y1 - image->y0,image->factor), image->comps[compno].dy); */
hr = image->comps[compno].h;
hrr = int_ceildivpow2(image->comps[compno].h, image->comps[compno].factor);
max = image->comps[compno].prec > 8 ? 255 : (1 << image->comps[compno].prec) - 1;
image->comps[compno].x0 = int_ceildivpow2(image->comps[compno].x0 - int_ceildiv(image->x0, image->comps[compno].dx), image->comps[compno].factor);
image->comps[compno].y0 = int_ceildivpow2(image->comps[compno].y0 - int_ceildiv(image->y0, image->comps[compno].dy), image->comps[compno].factor);
fprintf(fdest, "P5\n%d %d\n%d\n", wrr, hrr, max);
adjust = image->comps[compno].prec > 8 ? image->comps[compno].prec - 8 : 0;
for (i = 0; i < wrr * hrr; i++) {
int l;
unsigned char lc;
l = image->comps[compno].data[i / wrr * wr + i % wrr];
l += (image->comps[compno].sgnd ? 1 << (image->comps[compno].prec - 1) : 0);
lc = (unsigned char) ((l >> adjust)+((l >> (adjust-1))%2));
fprintf(fdest, "%c", lc);
}
fclose(fdest);
}
}
return 0;
}
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