openjpeg/mj2/MJ2_codec/mj2_convert.c

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#include <stdio.h>
#include <malloc.h>
#include "mj2.h"
#include <j2k.h>
#include <int.h>
/* ----------------------- */
/* */
/* */
/* Count the number of frames */
/* in a YUV file */
/* */
/* ----------------------- */
int yuv_num_frames(mj2_tk_t * tk, FILE *f)
{
int numimages, frame_size;
long end_of_f;
frame_size = (int) (tk->w * tk->h * (1.0 + (double) 2 / (double) (tk->CbCr_subsampling_dx * tk->CbCr_subsampling_dy))); /* Calculate frame size */
fseek(f, 0, SEEK_END);
end_of_f = ftell(f); /* Calculate file size */
if (end_of_f < frame_size) {
fprintf(stderr,
"YUV does not contains any frame of %d x %d size\n", tk->w,
tk->h);
return 0;
}
numimages = end_of_f / frame_size; /* Calculate number of images */
return numimages;
fclose(f);
}
// -----------------------
//
//
// YUV to IMAGE
//
// -----------------------
int yuvtoimage(FILE *yuvfile, mj2_tk_t * tk, j2k_image_t * img,
int frame_num, int subsampling_dx, int subsampling_dy)
{
int i, j;
int offset;
long end_of_f, position;
FILE *Compo;
offset =
(int) ((double) (frame_num * tk->w * tk->h) *
(1.0 +
1.0 * (double) 2 / (double) (tk->CbCr_subsampling_dx *
tk->CbCr_subsampling_dy)));
fseek(yuvfile, 0, SEEK_END);
end_of_f = ftell(yuvfile);
fseek(yuvfile, sizeof(unsigned char) * offset, SEEK_SET);
position = ftell(yuvfile);
if (position >= end_of_f) {
fprintf(stderr, "Cannot reach frame number %d in yuv file !!\n",
frame_num);
return 0;
}
img->x0 = tk->Dim[0];
img->y0 = tk->Dim[1];
img->x1 = !tk->Dim[0] ? (tk->w - 1) * subsampling_dx + 1 : tk->Dim[0] +
(tk->w - 1) * subsampling_dx + 1;
img->y1 = !tk->Dim[1] ? (tk->h - 1) * subsampling_dy + 1 : tk->Dim[1] +
(tk->h - 1) * subsampling_dy + 1;
img->numcomps = 3;
img->color_space = 3;
img->comps = (j2k_comp_t *) malloc(img->numcomps * sizeof(j2k_comp_t));
for (i = 0; i < img->numcomps; i++) {
img->comps[i].data = (int *) malloc(sizeof(int) * tk->w * tk->h);
img->comps[i].prec = 8;
img->comps[i].bpp = 8;
img->comps[i].sgnd = 0;
if (i == 0) {
img->comps[i].dx = subsampling_dx;
img->comps[i].dy = subsampling_dy;
} else {
img->comps[i].dx = subsampling_dx * tk->CbCr_subsampling_dx;
img->comps[i].dy = subsampling_dy * tk->CbCr_subsampling_dy;
}
}
Compo = fopen("Compo0", "wb");
if (!Compo) {
fprintf(stderr, "Failed to open Compo0 for writing !\n");
}
for (i = 0; i < (tk->w * tk->h / (img->comps[0].dx * img->comps[0].dy))
&& !feof(yuvfile); i++) {
unsigned char y;
j = fread(&y, 1, 1, yuvfile);
fwrite(&y, 1, 1, Compo);
}
fclose(Compo);
Compo = fopen("Compo1", "wb");
if (!Compo) {
fprintf(stderr, "Failed to open Compo1 for writing !\n");
}
for (i = 0; i < (tk->w * tk->h / (img->comps[1].dx * img->comps[1].dy))
&& !feof(yuvfile); i++) {
unsigned char cb;
j = fread(&cb, sizeof(unsigned char), 1, yuvfile);
fwrite(&cb, 1, 1, Compo);
}
fclose(Compo);
Compo = fopen("Compo2", "wb");
if (!Compo) {
fprintf(stderr, "Failed to open Compo2 for writing !\n");
}
for (i = 0; i < (tk->w * tk->h / (img->comps[2].dx * img->comps[2].dy))
&& !feof(yuvfile); i++) {
unsigned char cr;
j = fread(&cr, sizeof(unsigned char), 1, yuvfile);
fwrite(&cr, 1, 1, Compo);
}
fclose(Compo);
return 1;
}
// -----------------------
//
//
// IMAGE to YUV
//
// -----------------------
int imagetoyuv(j2k_image_t * img, j2k_cp_t * cp, char *outfile)
{
FILE *f;
int i;
if (img->numcomps == 3) {
if (img->comps[0].dx != img->comps[1].dx / 2
|| img->comps[1].dx != img->comps[2].dx) {
fprintf(stderr,
"Error with the input image components size: cannot create yuv file)\n");
return 1;
}
} else if (!(img->numcomps == 1)) {
fprintf(stderr,
"Error with the number of image components(must be one or three)\n");
return 1;
}
f = fopen(outfile, "a+b");
if (!f) {
fprintf(stderr, "failed to open %s for writing\n", outfile);
return 1;
}
for (i = 0; i < (img->comps[0].w * img->comps[0].h); i++) {
unsigned char y;
y = img->comps[0].data[i];
fwrite(&y, 1, 1, f);
}
if (img->numcomps == 3) {
for (i = 0; i < (img->comps[1].w * img->comps[1].h); i++) {
unsigned char cb;
cb = img->comps[1].data[i];
fwrite(&cb, 1, 1, f);
}
for (i = 0; i < (img->comps[2].w * img->comps[2].h); i++) {
unsigned char cr;
cr = img->comps[2].data[i];
fwrite(&cr, 1, 1, f);
}
} else if (img->numcomps == 1) {
for (i = 0; i < (img->comps[0].w * img->comps[0].h * 0.25); i++) {
unsigned char cb = 125;
fwrite(&cb, 1, 1, f);
}
for (i = 0; i < (img->comps[0].w * img->comps[0].h * 0.25); i++) {
unsigned char cr = 125;
fwrite(&cr, 1, 1, f);
}
}
fclose(f);
return 0;
}
// -----------------------
//
//
// IMAGE to BMP
//
// -----------------------
int imagetobmp(j2k_image_t * img, j2k_cp_t * cp, char *outfile) {
int w,wr,h,hr,i,pad;
FILE *f;
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) {
/* -->> -->> -->> -->>
24 bits color
<<-- <<-- <<-- <<-- */
f = fopen(outfile, "wb");
if (!f) {
fprintf(stderr, "failed to open %s for writing\n", outfile);
return 1;
}
w = img->comps[0].w;
wr = int_ceildivpow2(img->comps[0].w, img->comps[0].factor);
h = img->comps[0].h;
hr = int_ceildivpow2(img->comps[0].h, img->comps[0].factor);
fprintf(f, "BM");
/* FILE HEADER */
/* ------------- */
fprintf(f, "%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(f, "%c%c%c%c", (0) & 0xff, ((0) >> 8) & 0xff,
((0) >> 16) & 0xff, ((0) >> 24) & 0xff);
fprintf(f, "%c%c%c%c", (54) & 0xff, ((54) >> 8) & 0xff,
((54) >> 16) & 0xff, ((54) >> 24) & 0xff);
/* INFO HEADER */
/* ------------- */
fprintf(f, "%c%c%c%c", (40) & 0xff, ((40) >> 8) & 0xff,
((40) >> 16) & 0xff, ((40) >> 24) & 0xff);
fprintf(f, "%c%c%c%c", (unsigned char) ((wr) & 0xff),
(unsigned char) ((wr) >> 8) & 0xff,
(unsigned char) ((wr) >> 16) & 0xff,
(unsigned char) ((wr) >> 24) & 0xff);
fprintf(f, "%c%c%c%c", (unsigned char) ((hr) & 0xff),
(unsigned char) ((hr) >> 8) & 0xff,
(unsigned char) ((hr) >> 16) & 0xff,
(unsigned char) ((hr) >> 24) & 0xff);
fprintf(f, "%c%c", (1) & 0xff, ((1) >> 8) & 0xff);
fprintf(f, "%c%c", (24) & 0xff, ((24) >> 8) & 0xff);
fprintf(f, "%c%c%c%c", (0) & 0xff, ((0) >> 8) & 0xff,
((0) >> 16) & 0xff, ((0) >> 24) & 0xff);
fprintf(f, "%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(f, "%c%c%c%c", (7834) & 0xff, ((7834) >> 8) & 0xff,
((7834) >> 16) & 0xff, ((7834) >> 24) & 0xff);
fprintf(f, "%c%c%c%c", (7834) & 0xff, ((7834) >> 8) & 0xff,
((7834) >> 16) & 0xff, ((7834) >> 24) & 0xff);
fprintf(f, "%c%c%c%c", (0) & 0xff, ((0) >> 8) & 0xff,
((0) >> 16) & 0xff, ((0) >> 24) & 0xff);
fprintf(f, "%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 = img->comps[0].data[w * h - ((i) / (w) + 1) * w + (i) % (w)];
R = img->comps[0].data[w * hr - ((i) / (wr) + 1) * w + (i) % (wr)];
// G = img->comps[1].data[w * h - ((i) / (w) + 1) * w + (i) % (w)];
G = img->comps[1].data[w * hr - ((i) / (wr) + 1) * w + (i) % (wr)];
// B = img->comps[2].data[w * h - ((i) / (w) + 1) * w + (i) % (w)];
B = img->comps[2].data[w * hr - ((i) / (wr) + 1) * w + (i) % (wr)];
fprintf(f, "%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(f, "%c", 0);
}
}
fclose(f);
free(img->comps[1].data);
free(img->comps[2].data);
}
return 0;
}