[igt-dev] [RFC PATCH 2/3] lib/igt_chamelium: add support for GetLastInfoFrame

[Simon Ser]

This new call retrieves the last InfoFrame received by the Chamelium board.

TODO: detect GetLastInfoFrame support

Signed-off-by: Simon Ser <simon.ser at intel.com>
---
 lib/igt_chamelium.c | 52 +++++++++++++++++++++++++++++++++++++++++++++
 lib/igt_chamelium.h | 18 ++++++++++++++++
 2 files changed, 70 insertions(+)

diff --git a/lib/igt_chamelium.c b/lib/igt_chamelium.c
index 966d78dce146..cbf9a012bdf8 100644
--- a/lib/igt_chamelium.c
+++ b/lib/igt_chamelium.c
@@ -960,6 +960,58 @@ int chamelium_get_captured_frame_count(struct chamelium *chamelium)
 	return ret;
 }
 
+static const char *
+chamelium_infoframe_type_str(enum chamelium_infoframe_type type)
+{
+	switch (type) {
+	case CHAMELIUM_INFOFRAME_AVI:
+		return "avi";
+	case CHAMELIUM_INFOFRAME_AUDIO:
+		return "audio";
+	case CHAMELIUM_INFOFRAME_MPEG:
+		return "mpeg";
+	case CHAMELIUM_INFOFRAME_VENDOR:
+		return "vendor";
+	}
+	assert(0); /* unreachable */
+}
+
+struct chamelium_infoframe *
+chamelium_get_last_infoframe(struct chamelium *chamelium,
+			     struct chamelium_port *port,
+			     enum chamelium_infoframe_type type)
+{
+	xmlrpc_value *res, *res_version, *res_payload;
+	struct chamelium_infoframe *infoframe;
+	const unsigned char *payload;
+
+	res = chamelium_rpc(chamelium, NULL, "GetLastInfoFrame", "(is)",
+			    port->id, chamelium_infoframe_type_str(type));
+	xmlrpc_struct_find_value(&chamelium->env, res, "version", &res_version);
+	xmlrpc_struct_find_value(&chamelium->env, res, "payload", &res_payload);
+	infoframe = calloc(1, sizeof(*infoframe));
+	xmlrpc_read_int(&chamelium->env, res_version, &infoframe->version);
+	xmlrpc_read_base64(&chamelium->env, res_payload,
+			   &infoframe->payload_size, &payload);
+	/* xmlrpc-c's docs say payload is actually not constant */
+	infoframe->payload = (uint8_t *) payload;
+	xmlrpc_DECREF(res_version);
+	xmlrpc_DECREF(res_payload);
+	xmlrpc_DECREF(res);
+
+	if (infoframe->payload_size == 0) {
+		chamelium_infoframe_destroy(infoframe);
+		return NULL;
+	}
+	return infoframe;
+}
+
+void chamelium_infoframe_destroy(struct chamelium_infoframe *infoframe)
+{
+	free(infoframe->payload);
+	free(infoframe);
+}
+
 /**
  * chamelium_supports_get_audio_format: check the Chamelium device supports
  * retrieving the capture audio format.
diff --git a/lib/igt_chamelium.h b/lib/igt_chamelium.h
index ce9e9ced75d9..1f1cb7cac727 100644
--- a/lib/igt_chamelium.h
+++ b/lib/igt_chamelium.h
@@ -59,6 +59,19 @@ struct chamelium_audio_file {
 	int channels;
 };
 
+enum chamelium_infoframe_type {
+	CHAMELIUM_INFOFRAME_AVI,
+	CHAMELIUM_INFOFRAME_AUDIO,
+	CHAMELIUM_INFOFRAME_MPEG,
+	CHAMELIUM_INFOFRAME_VENDOR,
+};
+
+struct chamelium_infoframe {
+	int version;
+	size_t payload_size;
+	uint8_t *payload;
+};
+
 struct chamelium_edid;
 
 /**
@@ -122,6 +135,10 @@ void chamelium_start_capture(struct chamelium *chamelium,
 void chamelium_stop_capture(struct chamelium *chamelium, int frame_count);
 void chamelium_capture(struct chamelium *chamelium, struct chamelium_port *port,
 		       int x, int y, int w, int h, int frame_count);
+struct chamelium_infoframe *
+chamelium_get_last_infoframe(struct chamelium *chamelium,
+			     struct chamelium_port *port,
+			     enum chamelium_infoframe_type type);
 bool chamelium_has_audio_support(struct chamelium *chamelium,
 				 struct chamelium_port *port);
 void chamelium_get_audio_channel_mapping(struct chamelium *chamelium,
@@ -166,5 +183,6 @@ void chamelium_crop_analog_frame(struct chamelium_frame_dump *dump, int width,
 				 int height);
 void chamelium_destroy_frame_dump(struct chamelium_frame_dump *dump);
 void chamelium_destroy_audio_file(struct chamelium_audio_file *audio_file);
+void chamelium_infoframe_destroy(struct chamelium_infoframe *infoframe);
 
 #endif /* IGT_CHAMELIUM_H */
-- 
2.22.0