[igt-dev] [PATCH i-g-t 1/3] lib/igt_chamelium: add chamelium_port_get_video_params

[Simon Ser <simon.ser@intel.com>]

This new XML-RPC call allows to retrieve mode information from the Chamelium.
We can use it to check the mode we've chosen has been applied correctly.

Signed-off-by: Simon Ser <simon.ser@intel.com>
---
 lib/igt_chamelium.c | 58 +++++++++++++++++++++++++++++++++++++++++++++
 lib/igt_chamelium.h |  9 +++++++
 2 files changed, 67 insertions(+)

diff --git a/lib/igt_chamelium.c b/lib/igt_chamelium.c
index 966d78dce146..c332291ef305 100644
--- a/lib/igt_chamelium.c
+++ b/lib/igt_chamelium.c
@@ -28,6 +28,7 @@
 
 #include <string.h>
 #include <errno.h>
+#include <math.h>
 #include <xmlrpc-c/base.h>
 #include <xmlrpc-c/client.h>
 #include <pthread.h>
@@ -657,6 +658,63 @@ void chamelium_port_get_resolution(struct chamelium *chamelium,
 	xmlrpc_DECREF(res);
 }
 
+static void read_int_from_xml_struct(struct chamelium *chamelium,
+				     xmlrpc_value *struct_val, const char *key,
+				     int *dst)
+{
+	xmlrpc_value *val = NULL;
+
+	xmlrpc_struct_find_value(&chamelium->env, struct_val, key, &val);
+	if (val) {
+		xmlrpc_read_int(&chamelium->env, val, dst);
+		xmlrpc_DECREF(val);
+	} else
+		*dst = -1;
+}
+
+static void video_params_from_xml(struct chamelium *chamelium,
+				  xmlrpc_value *res,
+				  struct chamelium_video_params *params)
+{
+	xmlrpc_value *val = NULL;
+
+	xmlrpc_struct_find_value(&chamelium->env, res, "clock", &val);
+	if (val) {
+		xmlrpc_read_double(&chamelium->env, val, &params->clock);
+		xmlrpc_DECREF(val);
+	} else
+		params->clock = NAN;
+
+	read_int_from_xml_struct(chamelium, res, "htotal", &params->htotal);
+	read_int_from_xml_struct(chamelium, res, "hactive", &params->hactive);
+	read_int_from_xml_struct(chamelium, res, "hsync_offset",
+				 &params->hsync_offset);
+	read_int_from_xml_struct(chamelium, res, "hsync_width",
+				 &params->hsync_width);
+	read_int_from_xml_struct(chamelium, res, "hsync_polarity",
+				 &params->hsync_polarity);
+	read_int_from_xml_struct(chamelium, res, "vtotal", &params->vtotal);
+	read_int_from_xml_struct(chamelium, res, "vactive", &params->vactive);
+	read_int_from_xml_struct(chamelium, res, "vsync_offset",
+				 &params->vsync_offset);
+	read_int_from_xml_struct(chamelium, res, "vsync_width",
+				 &params->vsync_width);
+	read_int_from_xml_struct(chamelium, res, "vsync_polarity",
+				 &params->vsync_polarity);
+}
+
+void chamelium_port_get_video_params(struct chamelium *chamelium,
+				     struct chamelium_port *port,
+				     struct chamelium_video_params *params)
+{
+	xmlrpc_value *res;
+
+	res = chamelium_rpc(chamelium, NULL, "GetVideoParams", "(i)", port->id);
+	video_params_from_xml(chamelium, res, params);
+
+	xmlrpc_DECREF(res);
+}
+
 static void chamelium_get_captured_resolution(struct chamelium *chamelium,
 					      int *w, int *h)
 {
diff --git a/lib/igt_chamelium.h b/lib/igt_chamelium.h
index ce9e9ced75d9..cd5813821fb4 100644
--- a/lib/igt_chamelium.h
+++ b/lib/igt_chamelium.h
@@ -53,6 +53,12 @@ enum chamelium_check {
 	CHAMELIUM_CHECK_CRC,
 };
 
+struct chamelium_video_params {
+	double clock;
+	int htotal, hactive, hsync_offset, hsync_width, hsync_polarity;
+	int vtotal, vactive, vsync_offset, vsync_width, vsync_polarity;
+};
+
 struct chamelium_audio_file {
 	char *path;
 	int rate; /* Hz */
@@ -113,6 +119,9 @@ void chamelium_port_set_ddc_state(struct chamelium *chamelium,
 void chamelium_port_get_resolution(struct chamelium *chamelium,
 				   struct chamelium_port *port,
 				   int *x, int *y);
+void chamelium_port_get_video_params(struct chamelium *chamelium,
+				     struct chamelium_port *port,
+				     struct chamelium_video_params *params);
 igt_crc_t *chamelium_get_crc_for_area(struct chamelium *chamelium,
 				      struct chamelium_port *port,
 				      int x, int y, int w, int h);
-- 
2.22.0

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