261 lines
6.5 KiB
C
261 lines
6.5 KiB
C
/*
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* Copyright (c) 2003-2004, François-Olivier Devaux
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* Copyright (c) 2003-2004, Communications and remote sensing Laboratory, Universite catholique de Louvain, Belgium
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <openjpeg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <math.h>
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#ifndef WIN32
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#include <unistd.h>
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#endif
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#include <string.h>
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#include "mj2.h"
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// -->> -->> -->> -->>
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// YUV IMAGE FORMAT
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//-- <<-- <<-- <<-- */
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/* ----------------------- */
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/* */
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/* */
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/* Count the number of frames */
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/* in a YUV file */
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/* */
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/* ----------------------- */
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int yuv_num_frames(mj2_tk_t * tk)
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{
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FILE *f;
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int numimages, frame_size;
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long end_of_f;
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f = fopen(tk->imagefile, "rb");
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if (!f) {
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fprintf(stderr, "Failed to open %s for reading !!\n", tk->imagefile);
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return 0;
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}
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frame_size = (int) (tk->w * tk->h * (1.0 + (double) 2 / (double) (tk->CbCr_subsampling_dx * tk->CbCr_subsampling_dy))); /* Calculate frame size */
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fseek(f, 0, SEEK_END);
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end_of_f = ftell(f); /* Calculate file size */
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if (end_of_f < frame_size) {
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fprintf(stderr,
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"YUV does not contains any frame of %d x %d size\n", tk->w,
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tk->h);
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return 0;
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}
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numimages = end_of_f / frame_size; /* Calculate number of images */
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return numimages;
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fclose(f);
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}
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// -----------------------
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//
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//
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// YUV to IMAGE
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//
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// -----------------------
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int yuvtoimage(mj2_tk_t * tk, j2k_image_t * img, int frame_num)
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{
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FILE *f;
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int i, j;
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int offset;
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long end_of_f, position;
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FILE *Compo;
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f = fopen(tk->imagefile, "rb");
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if (!f) {
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fprintf(stderr, "Failed to open %s for reading !!\n", tk->imagefile);
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return 0;
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}
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offset =
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(int) ((double) (frame_num * tk->w * tk->h) *
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(1.0 +
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1.0 * (double) 2 / (double) (tk->CbCr_subsampling_dx *
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tk->CbCr_subsampling_dy)));
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fseek(f, 0, SEEK_END);
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end_of_f = ftell(f);
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fseek(f, sizeof(unsigned char) * offset, SEEK_SET);
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position = ftell(f);
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if (position >= end_of_f) {
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fprintf(stderr, "Cannot reach frame number %d in %s file !!\n",
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frame_num, tk->imagefile);
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return 0;
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}
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img->x0 = tk->Dim[0];
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img->y0 = tk->Dim[1];
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img->x1 =
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!tk->Dim[0] ? (tk->w - 1) * tk->subsampling_dx + 1 : tk->Dim[0] +
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(tk->w - 1) * tk->subsampling_dx + 1;
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img->y1 =
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!tk->Dim[1] ? (tk->h - 1) * tk->subsampling_dy + 1 : tk->Dim[1] +
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(tk->h - 1) * tk->subsampling_dy + 1;
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img->numcomps = 3;
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img->color_space = 3;
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img->comps = (j2k_comp_t *) malloc(img->numcomps * sizeof(j2k_comp_t));
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for (i = 0; i < img->numcomps; i++) {
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img->comps[i].data = (int *) malloc(sizeof(int) * tk->w * tk->h);
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img->comps[i].prec = 8;
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img->comps[i].bpp = 8;
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img->comps[i].sgnd = 0;
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if (i == 0) {
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img->comps[i].dx = tk->subsampling_dx;
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img->comps[i].dy = tk->subsampling_dy;
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} else {
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img->comps[i].dx = tk->subsampling_dx * tk->CbCr_subsampling_dx;
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img->comps[i].dy = tk->subsampling_dy * tk->CbCr_subsampling_dy;
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}
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}
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Compo = fopen("Compo0", "wb");
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if (!Compo) {
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fprintf(stderr, "Failed to open Compo0 for writing !\n");
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}
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for (i = 0; i < (tk->w * tk->h / (img->comps[0].dx * img->comps[0].dy))
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&& !feof(f); i++) {
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unsigned char y;
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j = fread(&y, 1, 1, f);
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fwrite(&y, 1, 1, Compo);
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}
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fclose(Compo);
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Compo = fopen("Compo1", "wb");
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if (!Compo) {
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fprintf(stderr, "Failed to open Compo1 for writing !\n");
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}
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for (i = 0; i < (tk->w * tk->h / (img->comps[1].dx * img->comps[1].dy))
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&& !feof(f); i++) {
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unsigned char cb;
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j = fread(&cb, sizeof(unsigned char), 1, f);
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fwrite(&cb, 1, 1, Compo);
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}
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fclose(Compo);
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Compo = fopen("Compo2", "wb");
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if (!Compo) {
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fprintf(stderr, "Failed to open Compo2 for writing !\n");
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}
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for (i = 0; i < (tk->w * tk->h / (img->comps[2].dx * img->comps[2].dy))
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&& !feof(f); i++) {
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unsigned char cr;
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j = fread(&cr, sizeof(unsigned char), 1, f);
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fwrite(&cr, 1, 1, Compo);
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}
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fclose(Compo);
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return 1;
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}
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// -----------------------
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//
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//
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// IMAGE to YUV
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//
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// -----------------------
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int imagetoyuv(j2k_image_t * img, j2k_cp_t * cp, char *outfile)
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{
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FILE *f;
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int i;
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if (img->numcomps != 3 || img->comps[0].dx != img->comps[1].dx / 2
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|| img->comps[1].dx != img->comps[2].dx) {
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fprintf(stderr, "Error with image components sizes\n");
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return 1;
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}
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f = fopen(outfile, "a+b");
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if (!f) {
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fprintf(stderr, "failed to open %s for writing\n", outfile);
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return 1;
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}
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for (i = 0; i < (img->comps[0].w * img->comps[0].h); i++) {
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unsigned char y;
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y = img->comps[0].data[i];
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fwrite(&y, 1, 1, f);
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}
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if (img->numcomps > 2) {
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for (i = 0; i < (img->comps[1].w * img->comps[1].h); i++) {
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unsigned char cb;
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cb = img->comps[1].data[i];
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fwrite(&cb, 1, 1, f);
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}
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for (i = 0; i < (img->comps[2].w * img->comps[2].h); i++) {
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unsigned char cr;
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cr = img->comps[2].data[i];
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fwrite(&cr, 1, 1, f);
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}
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} else if (img->numcomps == 1) {
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for (i = 0; i < (img->comps[0].w * img->comps[0].h * 0.25); i++) {
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unsigned char cb = 0;
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fwrite(&cb, 1, 1, f);
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}
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for (i = 0; i < (img->comps[0].w * img->comps[0].h * 0.25); i++) {
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unsigned char cr = 0;
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fwrite(&cr, 1, 1, f);
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}
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}
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fclose(f);
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return 0;
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}
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