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, 56 insertions, 0 deletions

diff --git a/drmencoder.h b/drmencoder.h
new file mode 100644
index 0000000..cf33069
--- /dev/null
+++ b/drmencoder.h
@@ -0,0 +1,56 @@
+/*
+ * 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_ENCODER_H_
+#define ANDROID_DRM_ENCODER_H_
+
+#include "drmcrtc.h"
+
+#include <stdint.h>
+#include <vector>
+#include <xf86drmMode.h>
+
+namespace android {
+
+class DrmEncoder {
+ public:
+  typedef std::vector<DrmCrtc *>::const_iterator CrtcIter;
+
+  DrmEncoder(drmModeEncoderPtr e, DrmCrtc *current_crtc,
+             const std::vector<DrmCrtc *> &possible_crtcs);
+  ~DrmEncoder();
+
+  uint32_t id() const;
+
+  DrmCrtc *crtc() const;
+  void set_crtc(DrmCrtc *crtc);
+
+  CrtcIter begin_possible_crtcs() const;
+  CrtcIter end_possible_crtcs() const;
+
+ private:
+  DrmEncoder(const DrmEncoder &);
+
+  uint32_t id_;
+  DrmCrtc *crtc_;
+
+  uint32_t type_;
+
+  std::vector<DrmCrtc *> possible_crtcs_;
+};
+}
+
+#endif  // ANDROID_DRM_ENCODER_H_