call into hwcomposer HAL when present
Change-Id: I70f31c69a9436a43860e78977442863ecba6d27b
diff --git a/services/surfaceflinger/DisplayHardware/HWComposer.cpp b/services/surfaceflinger/DisplayHardware/HWComposer.cpp
new file mode 100644
index 0000000..518c5fe
--- /dev/null
+++ b/services/surfaceflinger/DisplayHardware/HWComposer.cpp
@@ -0,0 +1,93 @@
+/*
+ * 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 <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),
+ 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 && (!mList || mList->numHwLayers < numLayers)) {
+ free(mList);
+ size_t size = sizeof(hwc_layer_list) + numLayers*sizeof(hwc_layer_t);
+ mList = (hwc_layer_list_t*)malloc(size);
+ 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;
+}
+
+HWComposer::iterator HWComposer::begin() {
+ return mList ? &(mList->hwLayers[0]) : NULL;
+}
+
+HWComposer::iterator HWComposer::end() {
+ return mList ? &(mList->hwLayers[mList->numHwLayers]) : NULL;
+}
+
+// ---------------------------------------------------------------------------
+}; // namespace android