130 lines
3.3 KiB
C
130 lines
3.3 KiB
C
#include <stdio.h>
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#include <malloc.h>
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#include <setjmp.h>
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#include "mj2.h"
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#include "mj2_convert.h"
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#include <openjpeg.h>
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//MEMORY LEAK
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#ifdef _DEBUG
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#define _CRTDBG_MAP_ALLOC
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#include <stdlib.h> // Must be included first
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#include <crtdbg.h>
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#endif
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//MEM
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jmp_buf j2k_error;
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int main(int argc, char *argv[]) {
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unsigned int tnum, snum;
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mj2_movie_t movie;
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mj2_tk_t *track;
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mj2_sample_t *sample;
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unsigned char* frame_codestream;
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FILE *file, *outfile;
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char outfilename[50];
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j2k_image_t img;
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j2k_cp_t cp;
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int i;
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cp.layer=0;
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cp.reduce=0;
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if (argc != 3) {
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printf("Bad syntax: Usage: MJ2_decoder inputfile.mj2 outputfile.yuv\n");
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printf("Example: MJ2_decoder foreman.mj2 foreman.yuv\n");
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return 1;
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}
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file = fopen(argv[1], "rb");
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if (!file) {
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fprintf(stderr, "failed to open %s for reading\n", argv[1]);
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return 1;
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}
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// Checking output file
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outfile = fopen(argv[2], "w");
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if (!file) {
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fprintf(stderr, "failed to open %s for writing\n", argv[2]);
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return 1;
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}
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fclose(outfile);
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if (mj2_read_struct(file, &movie)) // Creating the movie structure
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return 1;
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// Decode first video track
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tnum = 0;
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while (movie.tk[tnum].track_type != 0)
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tnum ++;
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track = &movie.tk[tnum];
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// Output info on first video tracl
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fprintf(stdout,"The first video track contains %d frames.\nWidth: %d, Height: %d \n\n",
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track->num_samples, track->w, track->h);
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for (snum=0; snum < track->num_samples; snum++)
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{
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fprintf(stdout,"Frame %d: ",snum+1);
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sample = &track->sample[snum];
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frame_codestream = (unsigned char*) malloc (sample->sample_size-8); // Skipping JP2C marker
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fseek(file,sample->offset+8,SEEK_SET);
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fread(frame_codestream,sample->sample_size-8,1, file); // Assuming that jp and ftyp markers size do
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if (!j2k_decode(frame_codestream, sample->sample_size-8, &img, &cp)) // Decode J2K to image
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return 1;
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if (((img.numcomps == 3) && (img.comps[0].dx == img.comps[1].dx / 2)
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&& (img.comps[0].dx == img.comps[2].dx / 2 ) && (img.comps[0].dx == 1))
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|| (img.numcomps == 1)) {
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if (imagetoyuv(&img, &cp, argv[2])) // Convert image to YUV
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return 1;
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}
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else if ((img.numcomps == 3) &&
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(img.comps[0].dx == 1) && (img.comps[1].dx == 1)&&
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(img.comps[2].dx == 1))// If YUV 4:4:4 input --> to bmp
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{
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fprintf(stdout,"The frames will be output in a bmp format (output_1.bmp, ...)\n");
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sprintf(outfilename,"output_%d.bmp",snum);
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if (imagetobmp(&img, &cp, outfilename)) // Convert image to YUV
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return 1;
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}
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else {
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fprintf(stdout,"Image component dimensions are unknown. Unable to output image\n");
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fprintf(stdout,"The frames will be output in a j2k file (output_1.j2k, ...)\n");
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sprintf(outfilename,"output_%d.j2k",snum);
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outfile = fopen(outfilename, "wb");
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if (!outfile) {
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fprintf(stderr, "failed to open %s for writing\n",outfilename);
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return 1;
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}
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fwrite(frame_codestream,sample->sample_size-8,1,outfile);
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fclose(outfile);
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}
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for (i=0; i<img.numcomps; i++)
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free(img.comps[i].data);
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j2k_dec_release();
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free(frame_codestream);
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}
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fclose(file);
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fprintf(stdout, "%d frame(s) correctly extracted\n", snum);
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mj2_memory_free(&movie);
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//MEMORY LEAK
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#ifdef _DEBUG
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_CrtDumpMemoryLeaks();
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#endif
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//MEM
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return 0;
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} |