MJ2 codec updated from LibOpenJPEG version 0.97 to LibOpenJPEG version 1. Hence,...

[openjpeg.git] / mj2 / extract_j2k_from_mj2.c

diff --git a/mj2/extract_j2k_from_mj2.c b/mj2/extract_j2k_from_mj2.c
new file mode 100644 (file)
index 0000000..eff8606
--- /dev/null
+++ b/mj2/extract_j2k_from_mj2.c
@@ -0,0 +1,142 @@
+/*
+ * Copyright (c) 2002-2007, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium
+ * Copyright (c) 2002-2007, Professor Benoit Macq
+ * Copyright (c) 2003-2007, Francois-Olivier Devaux 
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "opj_includes.h"
+#include "mj2.h"
+
+/* -------------------------------------------------------------------------- */
+
+/**
+sample error callback expecting a FILE* client object
+*/
+void error_callback(const char *msg, void *client_data) {
+       FILE *stream = (FILE*)client_data;
+       fprintf(stream, "[ERROR] %s", msg);
+}
+/**
+sample warning callback expecting a FILE* client object
+*/
+void warning_callback(const char *msg, void *client_data) {
+       FILE *stream = (FILE*)client_data;
+       fprintf(stream, "[WARNING] %s", msg);
+}
+/**
+sample debug callback expecting a FILE* client object
+*/
+void info_callback(const char *msg, void *client_data) {
+       FILE *stream = (FILE*)client_data;
+       fprintf(stream, "[INFO] %s", msg);
+}
+
+/* -------------------------------------------------------------------------- */
+
+
+int main(int argc, char *argv[]) {
+       opj_dinfo_t* dinfo; 
+       opj_event_mgr_t event_mgr;              /* event manager */
+  int tnum;
+  unsigned int snum;
+  opj_mj2_t *movie;
+  mj2_tk_t *track;
+  mj2_sample_t *sample;
+  unsigned char* frame_codestream;
+  FILE *file, *outfile;
+  char outfilename[50];
+       mj2_dparameters_t parameters;
+
+  if (argc != 3) {
+    printf("Bad syntax: Usage: MJ2_extractor mj2filename output_location\n"); 
+    printf("Example: MJ2_extractor foreman.mj2 output/foreman\n");
+    return 1;
+  }
+  
+  file = fopen(argv[1], "rb");
+  
+  if (!file) {
+    fprintf(stderr, "failed to open %s for reading\n", argv[1]);
+    return 1;
+  }
+
+       /*
+       configure the event callbacks (not required)
+       setting of each callback is optionnal
+       */
+       memset(&event_mgr, 0, sizeof(opj_event_mgr_t));
+       event_mgr.error_handler = error_callback;
+       event_mgr.warning_handler = warning_callback;
+       event_mgr.info_handler = info_callback;
+
+       /* get a MJ2 decompressor handle */
+       dinfo = mj2_create_decompress();
+
+       /* catch events using our callbacks and give a local context */
+       opj_set_event_mgr((opj_common_ptr)dinfo, &event_mgr, stderr);           
+
+       /* setup the decoder decoding parameters using user parameters */
+       movie = (opj_mj2_t*) dinfo->mj2_handle;
+       mj2_setup_decoder(dinfo->mj2_handle, &parameters);
+
+  if (mj2_read_struct(file, movie)) // Creating the movie structure
+    return 1;
+
+  // Decode first video track 
+  tnum = 0;
+  while (movie->tk[tnum].track_type != 0)
+    tnum ++;
+
+  track = &movie->tk[tnum];
+
+  fprintf(stdout,"Extracting %d frames from file...\n",track->num_samples);
+
+  for (snum=0; snum < track->num_samples; snum++)
+  {
+    sample = &track->sample[snum];
+    frame_codestream = (unsigned char*) malloc (sample->sample_size-8); // Skipping JP2C marker
+    fseek(file,sample->offset+8,SEEK_SET);
+    fread(frame_codestream,sample->sample_size-8,1, file);  // Assuming that jp and ftyp markers size do
+
+    sprintf(outfilename,"%s_%05d.j2k",argv[2],snum);
+    outfile = fopen(outfilename, "wb");
+    if (!outfile) {
+      fprintf(stderr, "failed to open %s for writing\n",outfilename);
+      return 1;
+    }
+    fwrite(frame_codestream,sample->sample_size-8,1,outfile);
+    fclose(outfile);
+    free(frame_codestream);
+    }
+  fclose(file);
+  fprintf(stdout, "%d frames correctly extracted\n", snum);
+       
+       /* free remaining structures */
+       if(dinfo) {
+               mj2_destroy_decompress((opj_mj2_t*)dinfo->mj2_handle);
+       }
+       
+  return 0;
+}