qdutils: Add display config to qdutils
This API is meant for system level users that need to get/set
various display attributes that are normally not available via
the regular Android framework channels.
Initially the APIs exposed are to check HDMI status, get display
attributes and set HSIC data.
Only physically connected displays are supported for now.
Change-Id: Ia783ce2ab0c4599a54c992171e01e2f0504550dc
diff --git a/libqdutils/display_config.h b/libqdutils/display_config.h
new file mode 100644
index 0000000..c7d8ce9
--- /dev/null
+++ b/libqdutils/display_config.h
@@ -0,0 +1,72 @@
+/*
+ * Copyright (c) 2013 The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials provided
+ * with the distribution.
+ * * Neither the name of The Linux Foundation. nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <gralloc_priv.h>
+#include <qdMetaData.h>
+#include <mdp_version.h>
+
+// This header is for clients to use to set/get global display configuration
+// The functions in this header run in the client process and wherever necessary
+// do a binder call to HWC to get/set data.
+// Only primary and external displays are supported here.
+// WiFi/virtual displays are not supported.
+
+namespace qdutils {
+
+// Use this enum to specify the dpy parameters where needed
+enum {
+ DISPLAY_PRIMARY = 0,
+ DISPLAY_EXTERNAL,
+};
+
+// Display Attributes that are available to clients of this library
+// Not to be confused with a similar struct in hwc_utils (in the hwc namespace)
+struct DisplayAttributes_t {
+ uint32_t vsync_period; //nanoseconds
+ uint32_t xres;
+ uint32_t yres;
+ float xdpi;
+ float ydpi;
+ char panel_type;
+};
+
+// Check if external display is connected. Useful to check before making
+// calls for external displays
+// Returns 1 if connected, 0 if disconnected, negative values on errors
+int isExternalConnected(void);
+
+// Get display vsync period which is in nanoseconds
+// i.e vsync_period = 1000000000l / fps
+// Returns 0 on success, negative values on errors
+int getDisplayAttributes(int dpy, DisplayAttributes_t& dpyattr);
+
+// Set HSIC data on a given display ID
+// Returns 0 on success, negative values on errors
+int setHSIC(int dpy, const HSICData_t& hsic_data);
+
+}; //namespace