drm_hwcomposer: Wrap libdrm ops (minus modeset/flip) in C++ classes

This allows us to compartmentalize a bunch of code/logic from
hwcomposer.cpp into drm classes.

Signed-off-by: Sean Paul <seanpaul@chromium.org>

Change-Id: Id3f912126f1fdcd44d32c3eb4fba646f77590278

1 files changed, 74 insertions, 0 deletions

diff --git a/drmresources.h b/drmresources.h
new file mode 100644
index 0000000..f329bd9
--- /dev/null
+++ b/drmresources.h
@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_DRM_H_
+#define ANDROID_DRM_H_
+
+#include "drmconnector.h"
+#include "drmcrtc.h"
+#include "drmencoder.h"
+#include "drmplane.h"
+
+#include <stdint.h>
+
+namespace android {
+
+class DrmResources {
+ public:
+  typedef std::vector<DrmConnector *>::const_iterator ConnectorIter;
+  typedef std::vector<DrmPlane *>::const_iterator PlaneIter;
+
+  DrmResources();
+  ~DrmResources();
+
+  int Init();
+
+  int fd() const;
+
+  ConnectorIter begin_connectors() const;
+  ConnectorIter end_connectors() const;
+  PlaneIter begin_planes() const;
+  PlaneIter end_planes() const;
+
+  DrmConnector *GetConnectorForDisplay(int display) const;
+  DrmCrtc *GetCrtcForDisplay(int display) const;
+  DrmPlane *GetPlane(uint32_t id) const;
+
+  int GetPlaneProperty(const DrmPlane &plane, const char *prop_name,
+                       DrmProperty *property);
+  int GetConnectorProperty(const DrmConnector &connector, const char *prop_name,
+                           DrmProperty *property);
+
+  uint32_t next_mode_id();
+  int SetDisplayActiveMode(int display, uint32_t mode_id);
+  int SetDpmsMode(int display, uint64_t mode);
+
+ private:
+  int TryEncoderForDisplay(int display, DrmEncoder *enc);
+  int GetProperty(uint32_t obj_id, uint32_t obj_type, const char *prop_name,
+                  DrmProperty *property);
+
+  int fd_;
+  uint32_t mode_id_;
+
+  std::vector<DrmConnector *> connectors_;
+  std::vector<DrmEncoder *> encoders_;
+  std::vector<DrmCrtc *> crtcs_;
+  std::vector<DrmPlane *> planes_;
+};
+}
+
+#endif  // ANDROID_DRM_H_