2 files changed, 65 insertions, 5 deletions

diff --git a/include/xas/vox.h b/include/xas/vox.h
index 7aa43e4..5a1cacf 100644
--- a/include/xas/vox.h
+++ b/include/xas/vox.h
@@ -54,6 +54,18 @@ int xas_vox_set_parameter(xas_vox *vox,
                             const char *name,
                             const char *value);
 
+int xas_vox_set_parameter_str(xas_vox *vox,
+                                const char *name,
+                                const char *value);
+
+int xas_vox_set_parameter_float(xas_vox *vox,
+                                  const char *name,
+                                  float value);
+
+int xas_vox_set_parameter_int(xas_vox *vox,
+                                const char *name,
+                                int value);
+
 int xas_vox_stop(xas_vox *vox);
 
 int xas_vox_active(xas_vox *vox);
diff --git a/src/vox.c b/src/vox.c
index bcfab5d..475300d 100644
--- a/src/vox.c
+++ b/src/vox.c
@@ -1,3 +1,4 @@
+#include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
@@ -87,6 +88,12 @@ static int vox_start(xas_vox *vox) {
         (void)vox_stop(vox);
     }
 
+    if (vox->tmpfh) {
+        if (fflush(vox->tmpfh) < 0) {
+            goto error_fflush;
+        }
+    }
+
     if (pipe(pipe_stdin) < 0) {
         goto error_pipe_stdin;
     }
@@ -168,6 +175,7 @@ error_pipe_stdout:
     (void)close(pipe_stdin[0]);
 
 error_pipe_stdin:
+error_fflush:
     return -1;
 }
 
@@ -276,6 +284,7 @@ xas_vox *xas_vox_new_args(xas_audio_format format,
 
     memset(vox->tmpfile, '\0', sizeof(vox->tmpfile));
     vox->tmpfd = -1;
+    vox->tmpfh = NULL;
 
     return vox;
 
@@ -317,26 +326,65 @@ error_tmpfile_open:
     return -1;
 }
 
-int xas_vox_set_parameter(xas_vox *vox,
+static int set_parameter_va(xas_vox *vox,
                             const char *name,
-                            const char *value) {
+                            const char *format,
+                            ...) {
+    va_list args;
+
     if (tmpfile_open(vox) < 0) {
         goto error_tmpfile_open;
     }
 
-    if (fprintf(vox->tmpfh, "(Parameter.set '%s %s)\n",
-                name,
-                value) < 0) {
+    va_start(args, format);
+
+    if (fprintf(vox->tmpfh, "(Parameter.set '%s ", name) < 0) {
+        goto error_fprintf;
+    }
+
+    if (vfprintf(vox->tmpfh, format, args) < 0) {
+        goto error_fprintf;
+    }
+
+    if (fprintf(vox->tmpfh, ")\n") < 0) {
         goto error_fprintf;
     }
 
+    va_end(args);
+
     return 0;
 
 error_fprintf:
+    va_end(args);
+
 error_tmpfile_open:
     return -1;
 }
 
+int xas_vox_set_parameter(xas_vox *vox,
+                            const char *name,
+                            const char *value) {
+    return set_parameter_va(vox, name, "%s", value);
+}
+
+int xas_vox_set_parameter_str(xas_vox *vox,
+                                const char *name,
+                                const char *value) {
+    return set_parameter_va(vox, name, "\"%s\"", value);
+}
+
+int xas_vox_set_parameter_float(xas_vox *vox,
+                                  const char *name,
+                                  float value) {
+    return set_parameter_va(vox, name, "%f", value);
+}
+
+int xas_vox_set_parameter_int(xas_vox *vox,
+                                const char *name,
+                                int value) {
+    return set_parameter_va(vox, name, "%d", value);
+}
+
 int xas_vox_stop(xas_vox *vox) {
     if (vox->state == XAS_VOX_ACTIVE) {
         return vox_stop(vox);