Fichiers audio, journal, annales

cours/audio/vcd.c

@@ -0,0 +1,75 @@
+#include "vcd.h"
+
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "vcd_lib.h"
+
+vcd_file_t *vcd = NULL;
+
+bool enabled = false;
+
+void hept_vcd_cleanup() {
+  if (vcd) {
+    printf("[vcd] saving trace\n");
+    vcd_file_write(vcd);
+    vcd_file_free(vcd);
+  }
+}
+
+void hept_vcd_init(const char *filename,
+                   size_t time_number,
+                   vcd_time_unit_t unit) {
+  if (vcd) {
+    fprintf(stderr, "[vcd] initialization has already been performed\n");
+  } else {
+    vcd = vcd_file_alloc(filename, time_number, unit);
+    assert (vcd);
+    if (atexit(hept_vcd_cleanup)) {
+      perror("[vcd] atexit() failed");
+      exit(EXIT_FAILURE);
+    }
+    printf("[vcd] will save trace to %s\n", filename);
+  }
+}
+
+static inline void trace_samples(vcd_signal_t **signal,
+                          const char *name, vcd_signal_type_t type,
+                          void *samples, size_t count) {
+  if (!vcd)
+    return;
+
+  if (!*signal) {
+    *signal = vcd_signal_alloc(name, type, 1 << 17);
+    if (!vcd_file_add_signal(vcd, *signal)) {
+        perror("vcd_file_add_signal()\n");
+        exit(EXIT_FAILURE);
+    }
+  }
+  vcd_add_samples(*signal, samples, count);
+}
+
+DEFINE_HEPT_NODE_RESET(Vcd, trace_bool) {
+  mem->signal = NULL;
+}
+
+DEFINE_HEPT_NODE_STEP(Vcd, trace_bool, (string name, int v)) {
+  trace_samples(&mem->signal, name, VCD_SIGNAL_TYPE_BOOL, &v, 1);
+}
+
+DEFINE_HEPT_NODE_RESET(Vcd, trace_int) {
+  mem->signal = NULL;
+}
+
+DEFINE_HEPT_NODE_STEP(Vcd, trace_int, (string name, int v)) {
+  trace_samples(&mem->signal, name, VCD_SIGNAL_TYPE_INT, &v, 1);
+}
+
+DEFINE_HEPT_NODE_RESET(Vcd, trace_float) {
+  mem->signal = NULL;
+}
+
+DEFINE_HEPT_NODE_STEP(Vcd, trace_float, (string name, float v)) {
+  trace_samples(&mem->signal, name, VCD_SIGNAL_TYPE_FLOAT, &v, 1);
+}