drivers: Factor out std_gvar_samplerates{,_steps}().

[libsigrok.git] / src / std.c

diff --git a/src/std.c b/src/std.c
index a4f5d8835e25b0026e29693f6bf7e9eca58300d5..e36b7ccc77910637dd0e0bbc484d3150e40b66a2 100644 (file)
--- a/src/std.c
+++ b/src/std.c
@@ -497,3 +497,107 @@ SR_PRIV GSList *std_scan_complete(struct sr_dev_driver *di, GSList *devices)
 
        return devices;
 }
+
+SR_PRIV int std_opts_config_list(uint32_t key, GVariant **data,
+       const struct sr_dev_inst *sdi, const struct sr_channel_group *cg,
+       const uint32_t scanopts[], size_t scansize, const uint32_t drvopts[],
+       size_t drvsize, const uint32_t devopts[], size_t devsize)
+{
+       switch (key) {
+       case SR_CONF_SCAN_OPTIONS:
+               /* Always return scanopts, regardless of sdi or cg. */
+               if (!scanopts)
+                       return SR_ERR_ARG;
+               *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
+                       scanopts, scansize, sizeof(uint32_t));
+               break;
+       case SR_CONF_DEVICE_OPTIONS:
+               if (!sdi) {
+                       /* sdi == NULL: return drvopts. */
+                       if (!drvopts)
+                               return SR_ERR_ARG;
+                       *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
+                               drvopts, drvsize, sizeof(uint32_t));
+               } else if (sdi && !cg) {
+                       /* sdi != NULL, cg == NULL: return devopts. */
+                       if (!devopts)
+                               return SR_ERR_ARG;
+                       *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
+                               devopts, devsize, sizeof(uint32_t));
+               } else {
+                       /*
+                        * Note: sdi != NULL, cg != NULL is not handled by
+                        * this function since it's very driver-specific.
+                        */
+                       sr_err("%s: %s: sdi/cg != NULL: not handling.",
+                              sdi->driver->name, __func__);
+                       return SR_ERR_ARG;
+               }
+               break;
+       default:
+               return SR_ERR_NA;
+       }
+
+       return SR_OK;
+}
+
+SR_PRIV GVariant *std_gvar_tuple_array(const uint64_t (*a)[][2], unsigned int n)
+{
+       unsigned int i;
+       GVariant *rational[2];
+       GVariantBuilder gvb;
+
+       g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
+
+       for (i = 0; i < n; i++) {
+               rational[0] = g_variant_new_uint64((*a)[i][0]);
+               rational[1] = g_variant_new_uint64((*a)[i][1]);
+
+               /* FIXME: Valgrind reports a memory leak here. */
+               g_variant_builder_add_value(&gvb, g_variant_new_tuple(rational, 2));
+       }
+
+       return g_variant_builder_end(&gvb);
+}
+
+SR_PRIV GVariant *std_gvar_tuple_rational(const struct sr_rational *r, unsigned int n)
+{
+       unsigned int i;
+       GVariant *rational[2];
+       GVariantBuilder gvb;
+
+       g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
+
+       for (i = 0; i < n; i++) {
+               rational[0] = g_variant_new_uint64(r[i].p);
+               rational[1] = g_variant_new_uint64(r[i].q);
+
+               /* FIXME: Valgrind reports a memory leak here. */
+               g_variant_builder_add_value(&gvb, g_variant_new_tuple(rational, 2));
+       }
+
+       return g_variant_builder_end(&gvb);
+}
+
+static GVariant *samplerate_helper(const uint64_t samplerates[], unsigned int n, const char *str)
+{
+       GVariant *gvar;
+       GVariantBuilder gvb;
+
+       g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
+       gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), samplerates,
+                       n, sizeof(uint64_t));
+       g_variant_builder_add(&gvb, "{sv}", str, gvar);
+
+       return g_variant_builder_end(&gvb);
+}
+
+SR_PRIV GVariant *std_gvar_samplerates(const uint64_t samplerates[], unsigned int n)
+{
+       return samplerate_helper(samplerates, n, "samplerates");
+}
+
+SR_PRIV GVariant *std_gvar_samplerates_steps(const uint64_t samplerates[], unsigned int n)
+{
+       return samplerate_helper(samplerates, n, "samplerate-steps");
+}