1 files changed, 99 insertions, 0 deletions
diff --git a/services/surfaceflinger/DisplayHardware/HWComposer.cpp b/services/surfaceflinger/DisplayHardware/HWComposer.cpp
new file mode 100644
index 0000000..0291d78
--- /dev/null
+++ b/services/surfaceflinger/DisplayHardware/HWComposer.cpp
@@ -0,0 +1,99 @@
+/*
+ * Copyright (C) 2010 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 <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+
+#include <utils/Errors.h>
+
+#include <hardware/hardware.h>
+
+#include <cutils/log.h>
+
+#include <EGL/egl.h>
+
+#include "HWComposer.h"
+
+namespace android {
+// ---------------------------------------------------------------------------
+
+HWComposer::HWComposer()
+    : mModule(0), mHwc(0), mList(0), mCapacity(0),
+      mDpy(EGL_NO_DISPLAY), mSur(EGL_NO_SURFACE)
+{
+    int err = hw_get_module(HWC_HARDWARE_MODULE_ID, &mModule);
+    LOGW_IF(err, "%s module not found", HWC_HARDWARE_MODULE_ID);
+    if (err == 0) {
+        err = hwc_open(mModule, &mHwc);
+        LOGE_IF(err, "%s device failed to initialize (%s)",
+                HWC_HARDWARE_COMPOSER, strerror(-err));
+    }
+}
+
+HWComposer::~HWComposer() {
+    free(mList);
+    if (mHwc) {
+        hwc_close(mHwc);
+    }
+}
+
+status_t HWComposer::initCheck() const {
+    return mHwc ? NO_ERROR : NO_INIT;
+}
+
+void HWComposer::setFrameBuffer(EGLDisplay dpy, EGLSurface sur) {
+    mDpy = (hwc_display_t)dpy;
+    mSur = (hwc_surface_t)sur;
+}
+
+status_t HWComposer::createWorkList(size_t numLayers) {
+    if (mHwc) {
+        if (!mList || mCapacity < numLayers) {
+            free(mList);
+            size_t size = sizeof(hwc_layer_list) + numLayers*sizeof(hwc_layer_t);
+            mList = (hwc_layer_list_t*)malloc(size);
+            mCapacity = numLayers;
+        }
+        mList->flags = HWC_GEOMETRY_CHANGED;
+        mList->numHwLayers = numLayers;
+    }
+    return NO_ERROR;
+}
+
+status_t HWComposer::prepare() const {
+    int err = mHwc->prepare(mHwc, mList);
+    return (status_t)err;
+}
+
+status_t HWComposer::commit() const {
+    int err = mHwc->set(mHwc, mDpy, mSur, mList);
+    mList->flags &= ~HWC_GEOMETRY_CHANGED;
+    return (status_t)err;
+}
+
+size_t HWComposer::getNumLayers() const {
+    return mList ? mList->numHwLayers : 0;
+}
+
+hwc_layer_t* HWComposer::getLayers() const {
+    return mList ? mList->hwLayers : 0;
+}
+
+// ---------------------------------------------------------------------------
+}; // namespace android