T: add extract_output_subframe

This tracer extracts output subframes generated by the eNodeB,
so they can be analyzed with some external tools.

common/utils/T/tracer/Makefile

@@ -6,7 +6,7 @@ CFLAGS=-Wall -g -pthread -DT_TRACER -I.
 LIBS=-lX11 -lm -lpng -lXft
 
 all: record replay extract_config textlog enb ue vcd macpdu2wireshark \
-     extract_input_subframe
+     extract_input_subframe extract_output_subframe
 
 record: utils.o record.o database.o config.o
 	$(CC) $(CFLAGS) -o record $^ $(LIBS)
@@ -21,6 +21,10 @@ extract_input_subframe: extract_input_subframe.o database.o event.o utils.o \
     config.o
 	$(CC) $(CFLAGS) -o $@ $^ $(LIBS)
 
+extract_output_subframe: extract_output_subframe.o database.o event.o utils.o \
+    config.o
+	$(CC) $(CFLAGS) -o $@ $^ $(LIBS)
+
 textlog: utils.o textlog.o database.o event.o handler.o config.o \
          event_selector.o view/view.a gui/gui.a logger/logger.a \
          filter/filter.a
@@ -65,6 +69,7 @@ filter/filter.a:
 clean:
 	rm -f *.o core tracer_remote textlog enb ue vcd record replay
 	rm -f extract_config macpdu2wireshark extract_input_subframe
+	rm -f extract_output_subframe
 	cd gui && make clean
 	cd view && make clean
 	cd logger && make clean

common/utils/T/tracer/extract_output_subframe.c

+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <fcntl.h>
+#include "database.h"
+#include "event.h"
+#include "config.h"
+
+void usage(void)
+{
+  printf(
+"usage: [options] <file> <frame> <subframe> <number of subframes>\n"
+"    the program dumps 'number of subframes' subframes starting\n"
+"    at 'frame:suubframe'\n"
+"options:\n"
+"    -d <database file>        this option is mandatory\n"
+"    -o <output file>          output to file (default: stdout)\n"
+"    -v                        verbose\n"
+  );
+  exit(1);
+}
+
+int main(int n, char **v)
+{
+  char *database_filename = NULL;
+  void *database;
+  int i;
+  int output_event_id;
+  database_event_format f;
+  char *file = NULL;
+  int fd;
+  int frame = -1, subframe = -1;
+  int number_of_subframes = -1;
+  int frame_arg, subframe_arg, buffer_arg;
+  int verbose = 0;
+  char *out_filename = NULL;
+  FILE *out;
+
+  for (i = 1; i < n; i++) {
+    if (!strcmp(v[i], "-h") || !strcmp(v[i], "--help")) usage();
+    if (!strcmp(v[i], "-d"))
+      { if (i > n-2) usage(); database_filename = v[++i]; continue; }
+    if (!strcmp(v[i], "-o"))
+      { if (i > n-2) usage(); out_filename = v[++i]; continue; }
+    if (!strcmp(v[i], "-v")) { verbose = 1; continue; }
+    if (file == NULL)              { file = v[i]; continue; }
+    if (frame == -1)               { frame = atoi(v[i]); continue; }
+    if (subframe == -1)            { subframe = atoi(v[i]); continue; }
+    if (number_of_subframes == -1) {number_of_subframes=atoi(v[i]);continue;}
+    usage();
+  }
+  if (file == NULL || frame == -1 || subframe == -1 ||
+      number_of_subframes == -1) usage();
+
+  if (database_filename == NULL) {
+    printf("ERROR: provide a database file (-d)\n");
+    exit(1);
+  }
+
+  if (out_filename == NULL) out = stdout;
+  else {
+    out = fopen(out_filename, "w");
+    if (out == NULL) { perror(out_filename); exit(1); }
+  }
+
+  database = parse_database(database_filename);
+
+  load_config_file(database_filename);
+
+  output_event_id = event_id_from_name(database, "ENB_PHY_OUTPUT_SIGNAL");
+  f = get_format(database, output_event_id);
+
+  frame_arg = subframe_arg = buffer_arg = -1;
+  for (i = 0; i < f.count; i++) {
+    if (!strcmp(f.name[i], "frame")) {
+      if (frame_arg != -1) goto err;
+      if (strcmp(f.type[i], "int")) goto err;
+      frame_arg = i;
+    }
+    if (!strcmp(f.name[i], "subframe")) {
+      if (subframe_arg != -1) goto err;
+      if (strcmp(f.type[i], "int")) goto err;
+      subframe_arg = i;
+    }
+    if (!strcmp(f.name[i], "txdata")) {
+      if (buffer_arg != -1) goto err;
+      if (strcmp(f.type[i], "buffer")) goto err;
+      buffer_arg = i;
+    }
+    continue;
+err:
+    printf("cannot deal with ENB_PHY_OUTPUT_SIGNAL from database file\n");
+    exit(1);
+  }
+  if (frame_arg == -1 || subframe_arg == -1 || buffer_arg == -1) goto err;
+
+  fd = open(file, O_RDONLY);
+  if (fd == -1) { perror(file); exit(1); }
+
+  int last_frame = -1;
+  int last_subframe = -1;
+  int subframe_written = 0;
+  while (1) {
+    char v[T_BUFFER_MAX];
+    event e;
+    e = get_event(fd, v, database);
+    if (e.type == -1) break;
+    if (e.type != output_event_id) continue;
+    if (verbose)
+      printf("found output frame %d subframe %d size %d\n",
+             e.e[frame_arg].i, e.e[subframe_arg].i, e.e[buffer_arg].bsize);
+    if (!(last_frame != -1 ||
+          (frame == e.e[frame_arg].i && subframe == e.e[subframe_arg].i)))
+      continue;
+    frame = e.e[frame_arg].i;
+    subframe = e.e[subframe_arg].i;
+    if (last_frame != -1) {
+      if (frame*10+subframe != (last_frame*10+last_subframe + 1) % 10240) {
+        printf("error: discontinuity, not what you want...\n");
+        exit(1);
+      }
+    }
+    last_frame = frame;
+    last_subframe = subframe;
+#if 0
+for (i = 0; i < e.e[buffer_arg].bsize/2; i++) {
+short *x = e.e[buffer_arg].b;
+x[i] *= 14;
+}
+#endif
+    if (verbose)
+      printf("save output frame %d subframe %d size %d\n",
+             e.e[frame_arg].i, e.e[subframe_arg].i, e.e[buffer_arg].bsize);
+    if (fwrite(e.e[buffer_arg].b, e.e[buffer_arg].bsize, 1, out) != 1) {
+      perror(out_filename);
+      exit(1);
+    }
+    subframe_written++;
+    if (subframe_written != number_of_subframes)
+      continue;
+
+    /* done */
+    fflush(out);
+    if (out_filename != NULL) {
+      if (fclose(out)) perror(out_filename);
+    }
+    if (verbose)
+      printf("%d subframes written\n", subframe_written);
+    return 0;
+  }
+
+  printf("error with input file, %d subframe written\n", subframe_written);
+  fflush(out);
+  if (out_filename != NULL) {
+    if (fclose(out)) perror(out_filename);
+  }
+  return 1;
+}