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
diff --git a/drmproperty.cpp b/drmproperty.cpp
new file mode 100644
index 0000000..0acea17
--- /dev/null
+++ b/drmproperty.cpp
@@ -0,0 +1,95 @@
+/*
+ * 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.
+ */
+
+#include "drmproperty.h"
+#include "drmresources.h"
+
+#include <errno.h>
+#include <stdint.h>
+#include <string>
+
+#include <xf86drmMode.h>
+
+namespace android {
+
+DrmProperty::DrmPropertyEnum::DrmPropertyEnum(drm_mode_property_enum *e)
+ : value_(e->value), name_(e->name) {
+}
+
+DrmProperty::DrmPropertyEnum::~DrmPropertyEnum() {
+}
+
+DrmProperty::DrmProperty(drmModePropertyPtr p, uint64_t value)
+ : id_(0), flags_(0), name_("") {
+ Init(p, value);
+}
+
+DrmProperty::DrmProperty() : id_(0), flags_(0), name_(""), value_(0) {
+}
+
+DrmProperty::~DrmProperty() {
+}
+
+void DrmProperty::Init(drmModePropertyPtr p, uint64_t value) {
+ id_ = p->prop_id;
+ flags_ = p->flags;
+ name_ = p->name;
+ value_ = value;
+
+ for (int i = 0; i < p->count_values; ++i)
+ values_.push_back(p->values[i]);
+
+ for (int i = 0; i < p->count_enums; ++i)
+ enums_.push_back(DrmPropertyEnum(&p->enums[i]));
+
+ for (int i = 0; i < p->count_blobs; ++i)
+ blob_ids_.push_back(p->blob_ids[i]);
+
+ if (flags_ & DRM_MODE_PROP_RANGE)
+ type_ = DRM_PROPERTY_TYPE_INT;
+ else if (flags_ & DRM_MODE_PROP_ENUM)
+ type_ = DRM_PROPERTY_TYPE_ENUM;
+}
+
+uint32_t DrmProperty::id() const {
+ return id_;
+}
+
+std::string DrmProperty::name() const {
+ return name_;
+}
+
+int DrmProperty::value(uint64_t *value) const {
+ if (values_.size() == 0)
+ return -ENOENT;
+
+ switch (type_) {
+ case DRM_PROPERTY_TYPE_INT:
+ *value = value_;
+ return 0;
+
+ case DRM_PROPERTY_TYPE_ENUM:
+ if (value_ >= enums_.size())
+ return -ENOENT;
+
+ *value = enums_[value_].value_;
+ return 0;
+
+ default:
+ return -EINVAL;
+ }
+}
+}