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openjpeg/mj2/wrap_j2k_in_mj2.c

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#include <stdio.h>
#include <malloc.h>
#include <setjmp.h>
#include <string.h>
#include "mj2.h"
#include <cio.h>
#include <j2k.h>
#include <int.h>
#define MJ2_MJ2 0x6d6a7032
#define MJ2_MJ2S 0x6d6a3273
#define JP2_JP2C 0x6a703263
#define MJ2_MDAT 0x6d646174
//MEMORY LEAK
#ifdef _DEBUG
#define _CRTDBG_MAP_ALLOC
#include <stdlib.h> // Must be included first
#include <crtdbg.h>
#endif
//MEM
jmp_buf j2k_error;
void j2k_read_siz_marker(FILE *file, j2k_image_t *j2k_img)
{
int len,i;
char buf, buf2[2];
char *siz_buffer;
fseek(file, 0, SEEK_SET);
do {
fread(&buf,1,1, file);
if (buf==(char)0xff)
fread(&buf,1,1, file);
}
while (!(buf==(char)0x51));
fread(buf2,2,1,file); /* Lsiz */
len = ((buf2[0])<<8) + buf2[1];
siz_buffer = (char*) malloc(len * sizeof(char));
fread(siz_buffer,len, 1, file);
cio_init(siz_buffer,len);
cio_read(2); /* Rsiz (capabilities) */
j2k_img->x1 = cio_read(4); /* Xsiz */
j2k_img->y1 = cio_read(4); /* Ysiz */
j2k_img->x0 = cio_read(4); /* X0siz */
j2k_img->y0 = cio_read(4); /* Y0siz */
cio_skip(16); /* XTsiz, YTsiz, XT0siz, YT0siz */
j2k_img->numcomps = cio_read(2); /* Csiz */
j2k_img->comps =
(j2k_comp_t *) malloc(j2k_img->numcomps * sizeof(j2k_comp_t));
for (i = 0; i < j2k_img->numcomps; i++) {
int tmp;
tmp = cio_read(1); /* Ssiz_i */
j2k_img->comps[i].prec = (tmp & 0x7f) + 1;
j2k_img->comps[i].sgnd = tmp >> 7;
j2k_img->comps[i].dx = cio_read(1); /* XRsiz_i */
j2k_img->comps[i].dy = cio_read(1); /* YRsiz_i */
j2k_img->comps[i].resno_decoded = 0; /* number of resolution decoded */
j2k_img->comps[i].factor = 0; /* reducing factor by component */
}
free(siz_buffer);
fseek(file, 0, SEEK_SET);
}
void setparams(mj2_movie_t *movie, j2k_image_t *img) {
int i, depth_0, depth, sign;
movie->tk[0].sample_rate = 25;
movie->tk[0].w = int_ceildiv(img->x1 - img->x0, img->comps[0].dx);
movie->tk[0].h = int_ceildiv(img->y1 - img->y0, img->comps[0].dy);
mj2_init_stdmovie(movie);
movie->tk[0].depth = img->comps[0].prec;
if (img->numcomps==3) {
if ((img->comps[0].dx == 1) && (img->comps[1].dx == 1) && (img->comps[1].dx == 1))
movie->tk[0].CbCr_subsampling_dx = 1;
else if ((img->comps[0].dx == 1) && (img->comps[1].dx == 2) && (img->comps[1].dx == 2))
movie->tk[0].CbCr_subsampling_dx = 2;
else
fprintf(stderr,"Image component sizes are incoherent\n");
if ((img->comps[0].dy == 1) && (img->comps[1].dy == 1) && (img->comps[1].dy == 1))
movie->tk[0].CbCr_subsampling_dy = 1;
else if ((img->comps[0].dy == 1) && (img->comps[1].dy == 2) && (img->comps[1].dy == 2))
movie->tk[0].CbCr_subsampling_dy = 2;
else
fprintf(stderr,"Image component sizes are incoherent\n");
}
movie->tk[0].sample_rate = 25;
movie->tk[0].jp2_struct.numcomps = img->numcomps; // NC
jp2_init_stdjp2(&movie->tk[0].jp2_struct);
movie->tk[0].jp2_struct.w = int_ceildiv(img->x1 - img->x0, img->comps[0].dx);
movie->tk[0].jp2_struct.h = int_ceildiv(img->y1 - img->y0, img->comps[0].dy);
depth_0 = img->comps[0].prec - 1;
sign = img->comps[0].sgnd;
movie->tk[0].jp2_struct.bpc = depth_0 + (sign << 7);
for (i = 1; i < img->numcomps; i++) {
depth = img->comps[i].prec - 1;
sign = img->comps[i].sgnd;
if (depth_0 != depth)
movie->tk[0].jp2_struct.bpc = 255;
}
for (i = 0; i < img->numcomps; i++)
movie->tk[0].jp2_struct.comps[i].bpcc =
img->comps[i].prec - 1 + (img->comps[i].sgnd << 7);
if ((img->numcomps == 1 || img->numcomps == 3)
&& (movie->tk[0].jp2_struct.bpc != 255))
movie->tk[0].jp2_struct.meth = 1;
else
movie->tk[0].jp2_struct.meth = 2;
if (img->numcomps == 1)
movie->tk[0].jp2_struct.enumcs = 17; // Grayscale
else if ((img->comps[0].dx == 1) && (img->comps[1].dx == 1) && (img->comps[1].dx == 1) &&
(img->comps[0].dy == 1) && (img->comps[1].dy == 1) && (img->comps[1].dy == 1))
movie->tk[0].jp2_struct.enumcs = 16; // RGB
else if ((img->comps[0].dx == 1) && (img->comps[1].dx == 2) && (img->comps[1].dx == 2) &&
(img->comps[0].dy == 1) && (img->comps[1].dy == 2) && (img->comps[1].dy == 2))
movie->tk[0].jp2_struct.enumcs = 18; // YUV
else
movie->tk[0].jp2_struct.enumcs = 0; // Unkown profile */
}
int main(int argc, char *argv[]) {
unsigned int snum;
mj2_movie_t movie;
mj2_sample_t *sample;
unsigned char* frame_codestream;
FILE *mj2file, *j2kfile;
char j2kfilename[50];
char *buf;
int offset, mdat_initpos;
j2k_image_t img;
int i;
if (argc != 3) {
printf("Bad syntax: Usage: MJ2_Wrapper source_location mj2_filename\n");
printf("Example: MJ2_Wrapper input/input output.mj2\n");
return 1;
}
mj2file = fopen(argv[2], "wb");
if (!mj2file) {
fprintf(stderr, "failed to open %s for writing\n", argv[2]);
return 1;
}
// Initialing the movie (parameters used in the JP and FTYP boxes
movie.num_htk = 0; // No hint tracks
movie.num_stk = 0; // No sound tracks
movie.num_vtk = 1; // One video track
movie.tk = (mj2_tk_t*) malloc (sizeof(mj2_tk_t)); //Memory allocation for the video track
movie.tk[0].sample = (mj2_sample_t*) malloc (sizeof(mj2_sample_t));
movie.tk[0].chunk = (mj2_chunk_t *) malloc(sizeof(mj2_chunk_t));
movie.tk[0].track_type = 0; // Video track
movie.tk[0].track_ID = 1; // Track ID = 1
movie.brand = MJ2_MJ2; // One brand: MJ2
movie.num_cl = 2; // Two compatible brands: MJ2 and MJ2S
movie.cl = (unsigned int *) malloc(movie.num_cl * sizeof(unsigned int));
movie.cl[0] = MJ2_MJ2;
movie.cl[1] = MJ2_MJ2S;
movie.minversion = 0; // Minimum version: 0
// Writing JP, FTYP and MDAT boxes
buf = (char*) malloc (300 * sizeof(char)); // Assuming that the JP and FTYP
// boxes won't be longer than 300 bytes
cio_init(buf , 300);
mj2_write_jp();
mj2_write_ftyp(&movie);
mdat_initpos = cio_tell();
cio_skip(4);
cio_write(MJ2_MDAT, 4);
fwrite(buf,cio_tell(),1,mj2file);
free(buf);
// Insert each j2k codestream in a JP2C box
snum=0;
offset = 0;
while(1)
{
sample = &movie.tk[0].sample[snum];
sprintf(j2kfilename,"%s_%d.j2k",argv[1],snum);
j2kfile = fopen(j2kfilename, "rb");
if (!j2kfile) {
if (snum==0) { // Could not open a single codestream
fprintf(stderr, "failed to open %s for reading\n",j2kfilename);
return 1;
}
else { // Tried to open a inexistant codestream
fprintf(stdout,"%d frames created\n",snum);
break;
}
}
// Calculating offset for samples and chunks
offset += cio_tell();
sample->offset = offset;
movie.tk[0].chunk[snum].offset = offset; // There will be one sample per chunk
// Calculating sample size
fseek(j2kfile,0,SEEK_END);
sample->sample_size = ftell(j2kfile) + 8; // Sample size is codestream + JP2C box header
fseek(j2kfile,0,SEEK_SET);
// Reading siz marker of j2k image for the first codestream
if (snum==0)
j2k_read_siz_marker(j2kfile, &img);
// Writing JP2C box header
frame_codestream = (unsigned char*) malloc (sample->sample_size+8);
cio_init(frame_codestream, sample->sample_size);
cio_write(sample->sample_size, 4); // Sample size
cio_write(JP2_JP2C, 4); // JP2C
// Writing codestream from J2K file to MJ2 file
fread(frame_codestream+8,sample->sample_size-8,1,j2kfile);
fwrite(frame_codestream,sample->sample_size,1,mj2file);
cio_skip(sample->sample_size-8);
// Ending loop
fclose(j2kfile);
snum++;
movie.tk[0].sample = realloc(movie.tk[0].sample, (snum+1) * sizeof(mj2_sample_t));
movie.tk[0].chunk = realloc(movie.tk[0].chunk, (snum+1) * sizeof(mj2_chunk_t));
free(frame_codestream);
}
// Writing the MDAT box length in header
offset += cio_tell();
buf = (char*) malloc (4 * sizeof(char));
cio_init(buf,4);
cio_write(offset-mdat_initpos,4); // Write MDAT length in MDAT box header
fseek(mj2file,(long)mdat_initpos,SEEK_SET);
fwrite(buf,4,1,mj2file);
fseek(mj2file,0,SEEK_END);
free(buf);
// Setting movie parameters
movie.tk[0].num_samples=snum;
movie.tk[0].num_chunks=snum;
setparams(&movie, &img);
// Writing MOOV box
i=1;
buf = (char*) malloc (10000 * sizeof(char));
cio_init(buf , i*10000);
if (setjmp(j2k_error)) {
i++;
buf = realloc(buf,i*10000* sizeof(char));
cio_init(buf , i*10000);
}
mj2_write_moov(&movie);
fwrite(buf,cio_tell(),1,mj2file);
// Ending program
fclose(mj2file);
free(img.comps);
free(buf);
mj2_memory_free(&movie);
//MEMORY LEAK
#ifdef _DEBUG
_CrtDumpMemoryLeaks();
#endif
//MEM
return 0;
}
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