opj_image_t* jp2_decode(opj_jp2_t *jp2, opj_cio_t *cio, opj_codestream_info_t *cstr_info) {
opj_common_ptr cinfo;
opj_image_t *image = NULL;
if(!jp2 || !cio) {
return NULL;
}
cinfo = jp2->cinfo;
/* JP2 decoding */
if(!jp2_read_struct(jp2, cio)) {
opj_event_msg(cinfo, EVT_ERROR, "Failed to decode jp2 structure\n");
return NULL;
}
/* J2K decoding */
image = j2k_decode(jp2->j2k, cio, cstr_info);
if(!image) {
opj_event_msg(cinfo, EVT_ERROR, "Failed to decode J2K image\n");
return NULL;
}
/* Set Image Color Space */
if (jp2->enumcs == 16)
image->color_space = CLRSPC_SRGB;
else if (jp2->enumcs == 17)
image->color_space = CLRSPC_GRAY;
else if (jp2->enumcs == 18)
image->color_space = CLRSPC_SYCC;
else
image->color_space = CLRSPC_UNKNOWN;
return image;
}
opj_image_t* OPJ_CALLCONV opj_decode_with_info(opj_dinfo_t *dinfo, opj_cio_t *cio, opj_codestream_info_t *cstr_info) {
if(dinfo && cio) {
switch(dinfo->codec_format) {
case CODEC_J2K:
return j2k_decode((opj_j2k_t*)dinfo->j2k_handle, cio, cstr_info);
case CODEC_JPT:
return j2k_decode_jpt_stream((opj_j2k_t*)dinfo->j2k_handle, cio, cstr_info);
case CODEC_JP2:
return jp2_decode((opj_jp2_t*)dinfo->jp2_handle, cio, cstr_info);
case CODEC_UNKNOWN:
default:
break;
}
}
return NULL;
}
int jp2_read_jp2c(unsigned char *src, int len, jp2_struct_t * jp2_struct,
j2k_cp_t * cp)
{
jp2_box_t box;
jp2_read_boxhdr(&box);
if (JP2_JP2C != box.type) {
fprintf(stderr, "Error: Expected JP2C Marker\n");
return 1;
}
src += cio_tell();
if (j2k_decode(src, len, jp2_struct->image, cp) == 0) {
fprintf(stderr, "JP2F box: failed to decode J2K bitstream image!\n");
return 1;
}
return 0;
}
opj_image_t* jp2_decode(opj_jp2_t *jp2, opj_cio_t *cio) {
opj_common_ptr cinfo;
opj_image_t *image = NULL;
if(!jp2 || !cio) {
return NULL;
}
cinfo = jp2->cinfo;
/* JP2 decoding */
if(!jp2_read_struct(jp2, cio)) {
opj_event_msg(cinfo, EVT_ERROR, "Failed to decode jp2 structure\n");
return NULL;
}
/* J2K decoding */
image = j2k_decode(jp2->j2k, cio);
if(!image) {
opj_event_msg(cinfo, EVT_ERROR, "Failed to decode J2K image\n");
}
return image;
}
opj_image_t* opj_jp2_decode(opj_jp2_t *jp2, opj_cio_t *cio,
opj_codestream_info_t *cstr_info)
{
opj_common_ptr cinfo;
opj_image_t *image = NULL;
opj_jp2_color_t color;
if(!jp2 || !cio)
{
return NULL;
}
memset(&color, 0, sizeof(opj_jp2_color_t));
cinfo = jp2->cinfo;
/* JP2 decoding */
if(!jp2_read_struct(jp2, cio, &color))
{
free_color_data(&color);
opj_event_msg(cinfo, EVT_ERROR, "Failed to decode jp2 structure\n");
return NULL;
}
/* J2K decoding */
image = j2k_decode(jp2->j2k, cio, cstr_info);
if(!image)
{
free_color_data(&color);
opj_event_msg(cinfo, EVT_ERROR, "Failed to decode J2K image\n");
return NULL;
}
if (!jp2->ignore_pclr_cmap_cdef){
/* Set Image Color Space */
if (jp2->enumcs == 16)
image->color_space = CLRSPC_SRGB;
else if (jp2->enumcs == 17)
image->color_space = CLRSPC_GRAY;
else if (jp2->enumcs == 18)
image->color_space = CLRSPC_SYCC;
else
image->color_space = CLRSPC_UNKNOWN;
if(color.jp2_cdef)
{
jp2_apply_cdef(image, &color);
}
if(color.jp2_pclr)
{
/* Part 1, I.5.3.4: Either both or none : */
if( !color.jp2_pclr->cmap)
jp2_free_pclr(&color);
else
jp2_apply_pclr(&color, image, cinfo);
}
if(color.icc_profile_buf)
{
image->icc_profile_buf = color.icc_profile_buf;
color.icc_profile_buf = NULL;
image->icc_profile_len = color.icc_profile_len;
}
}
return image;
}/* opj_jp2_decode() */
bool CxImageJ2K::Decode(CxFile *hFile)
{
if (hFile == NULL) return false;
try
{
BYTE* src;
long len;
j2k_image_t *img=NULL;
j2k_cp_t *cp=NULL;
long i,x,y,w,h,max;
len=hFile->Size();
src=(BYTE*)malloc(len);
hFile->Read(src, len, 1);
if (!j2k_decode(src, len, &img, &cp)) {
free(src);
throw "failed to decode J2K image!";
}
free(src);
if (img->numcomps==3 &&
img->comps[0].dx==img->comps[1].dx &&
img->comps[1].dx==img->comps[2].dx &&
img->comps[0].dy==img->comps[1].dy &&
img->comps[1].dy==img->comps[2].dy &&
img->comps[0].prec==img->comps[1].prec &&
img->comps[1].prec==img->comps[2].prec)
{
w=CEILDIV(img->x1-img->x0, img->comps[0].dx);
h=CEILDIV(img->y1-img->y0, img->comps[0].dy);
max=(1<<img->comps[0].prec)-1;
Create(w,h,24,CXIMAGE_FORMAT_J2K);
RGBQUAD c;
for (i=0,y=0; y<h; y++) {
for (x=0; x<w; x++,i++){
c.rgbRed = img->comps[0].data[i];
c.rgbGreen = img->comps[1].data[i];
c.rgbBlue = img->comps[2].data[i];
SetPixelColor(x,h-1-y,c);
}
}
} else {
int compno;
info.nNumFrames = img->numcomps;
if ((info.nFrame<0)||(info.nFrame>=info.nNumFrames)){
j2k_destroy(&img,&cp);
throw "wrong frame!";
}
for (compno=0; compno<=info.nFrame; compno++) {
w=CEILDIV(img->x1-img->x0, img->comps[compno].dx);
h=CEILDIV(img->y1-img->y0, img->comps[compno].dy);
max=(1<<img->comps[compno].prec)-1;
Create(w,h,8,CXIMAGE_FORMAT_J2K);
SetGrayPalette();
for (i=0,y=0; y<h; y++) {
for (x=0; x<w; x++,i++){
SetPixelIndex(x,h-1-y,img->comps[compno].data[i]);
}
}
}
}
j2k_destroy(&img,&cp);
} catch (char *message) {
strncpy(info.szLastError,message,255);
return FALSE;
}
return true;
}
int main(int argc, char **argv)
{
FILE *f;
char *src, *src_name;
char *dest, S1, S2, S3;
int len;
j2k_image_t img;
j2k_cp_t cp;
int w, wr, wrr, h, hr, hrr, max;
int i, image_type = -1, compno, pad, j;
int adjust;
jp2_struct_t *jp2_struct;
if (argc < 3) {
fprintf(stderr,
"usage: %s j2k-file image-file [-reduce n]\n", argv[0]);
return 1;
}
f = fopen(argv[1], "rb");
if (!f) {
fprintf(stderr, "failed to open %s for reading\n", argv[1]);
return 1;
}
dest = argv[2];
cp.reduce_on = 0;
cp.reduce_value = 0;
/* OPTION REDUCE IS ACTIVE */
if (argc == 5) {
if (strcmp(argv[3], "-reduce")) {
fprintf(stderr,
"usage: options " "-reduce n"
" where n is the factor of reduction [%s]\n", argv[3]);
return 1;
}
cp.reduce_on = 1;
sscanf(argv[4], "%d", &cp.reduce_value);
}
while (*dest) {
dest++;
}
dest--;
S3 = *dest;
dest--;
S2 = *dest;
dest--;
S1 = *dest;
if ((S1 == 'p' && S2 == 'g' && S3 == 'x')
|| (S1 == 'P' && S2 == 'G' && S3 == 'X')) {
image_type = 0;
dest--;
*dest = '\0';
}
if ((S1 == 'p' && S2 == 'n' && S3 == 'm')
|| (S1 == 'P' && S2 == 'N' && S3 == 'M') || (S1 == 'p' && S2 == 'g'
&& S3 == 'm')
|| (S1 == 'P' && S2 == 'G' && S3 == 'M') || (S1 == 'P' && S2 == 'P'
&& S3 == 'M')
|| (S1 == 'p' && S2 == 'p' && S3 == 'm')) {
image_type = 1;
}
if ((S1 == 'b' && S2 == 'm' && S3 == 'p')
|| (S1 == 'B' && S2 == 'M' && S3 == 'P')) {
image_type = 2;
}
if (image_type == -1) {
fprintf(stderr,
"!! Unrecognized format for infile : %c%c%c [accept only *.pnm, *.pgm, *.ppm, *.pgx or *.bmp] !!\n\n",
S1, S2, S3);
return 1;
}
fseek(f, 0, SEEK_END);
len = ftell(f);
fseek(f, 0, SEEK_SET);
src = (char *) malloc(len);
fread(src, 1, len, f);
fclose(f);
src_name = argv[1];
while (*src_name) {
src_name++;
}
src_name--;
S3 = *src_name;
src_name--;
S2 = *src_name;
src_name--;
S1 = *src_name;
/* J2K format */
if ((S1 == 'j' && S2 == '2' && S3 == 'k')
|| (S1 == 'J' && S2 == '2' && S3 == 'K') || (S1 == 'j' && S2 == '2'
&& S3 == 'c')
|| (S1 == 'J' && S2 == '2' && S3 == 'C')) {
if (!j2k_decode(src, len, &img, &cp)) {
fprintf(stderr, "j2k_to_image: failed to decode image!\n");
return 1;
}
}
/* JP2 format */
else if ((S1 == 'j' && S2 == 'p' && S3 == '2')
|| (S1 == 'J' && S2 == 'P' && S3 == '2')) {
jp2_struct = (jp2_struct_t *) malloc(sizeof(jp2_struct_t));
jp2_struct->image = &img;
if (jp2_decode(src, len, jp2_struct, &cp)) {
fprintf(stderr, "j2k_to_image: failed to decode image!\n");
return 1;
}
/* Insert code here if you want to create actions on jp2_struct before deleting it */
free(jp2_struct);
}
/* JPT format */
else if ((S1 == 'j' && S2 == 'p' && S3 == 't')
|| (S1 == 'J' && S2 == 'P' && S3 == 'T')) {
if (!j2k_decode_jpt_stream(src, len, &img, &cp)) {
fprintf(stderr, "j2k_to_image: failed to decode image!\n");
return 1;
}
}
/* otherwise : error */
else {
fprintf(stderr,
"j2k_to_image : Unknown format image *.%c%c%c [only *.j2k, *.jp2, *.jpc or *.jpt]!! \n",
S1, S2, S3);
return 1;
}
free(src);
/* ------------------ CREATE OUT IMAGE WITH THE RIGHT FORMAT ----------------------- */
/* ---------------------------- / */
/* / / */
/* / FORMAT : PNM, PGM or PPM / */
/* / / */
/* ---------------------------- / */
switch (image_type) {
case 1: /* PNM PGM PPM */
if (img.numcomps == 3 && img.comps[0].dx == img.comps[1].dx
&& img.comps[1].dx == img.comps[2].dx
&& img.comps[0].dy == img.comps[1].dy
&& img.comps[1].dy == img.comps[2].dy
&& img.comps[0].prec == img.comps[1].prec
&& img.comps[1].prec == img.comps[2].prec) {
f = fopen(argv[2], "wb");
w = ceildiv(img.x1 - img.x0, img.comps[0].dx);
// wr = ceildiv(int_ceildivpow2(img.x1 - img.x0,img.factor),img.comps[0].dx);
wr = img.comps[0].w;
wrr = int_ceildivpow2(img.comps[0].w, img.comps[0].factor);
h = ceildiv(img.y1 - img.y0, img.comps[0].dy);
// hr = ceildiv(int_ceildivpow2(img.y1 - img.y0,img.factor), img.comps[0].dy);
hr = img.comps[0].h;
hrr = int_ceildivpow2(img.comps[0].h, img.comps[0].factor);
max = img.comps[0].prec > 8 ? 255 : (1 << img.comps[0].prec) - 1;
img.comps[0].x0 =
int_ceildivpow2(img.comps[0].x0 -
int_ceildiv(img.x0, img.comps[0].dx),
img.comps[0].factor);
img.comps[0].y0 =
int_ceildivpow2(img.comps[0].y0 -
int_ceildiv(img.y0, img.comps[0].dy),
img.comps[0].factor);
fprintf(f, "P6\n# %d %d %d %d %d\n%d %d\n%d\n",
cp.tcps[cp.tileno[0]].tccps[0].numresolutions, w, h,
img.comps[0].x0, img.comps[0].y0, wrr, hrr, max);
adjust = img.comps[0].prec > 8 ? img.comps[0].prec - 8 : 0;
for (i = 0; i < wrr * hrr; i++) {
char r, g, b;
r = img.comps[0].data[i / wrr * wr + i % wrr];
r += (img.comps[0].sgnd ? 1 << (img.comps[0].prec - 1) : 0);
r = r >> adjust;
g = img.comps[1].data[i / wrr * wr + i % wrr];
g += (img.comps[1].sgnd ? 1 << (img.comps[1].prec - 1) : 0);
g = g >> adjust;
b = img.comps[2].data[i / wrr * wr + i % wrr];
b += (img.comps[2].sgnd ? 1 << (img.comps[2].prec - 1) : 0);
b = b >> adjust;
fprintf(f, "%c%c%c", r, g, b);
}
free(img.comps[0].data);
free(img.comps[1].data);
free(img.comps[2].data);
fclose(f);
} else {
for (compno = 0; compno < img.numcomps; compno++) {