upload android base code part4

android/hardware/libhardware/modules/hwcomposer/Android.mk

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+# Copyright (C) 2008 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.
+
+
+LOCAL_PATH := $(call my-dir)
+
+# HAL module implemenation stored in
+# hw/<OVERLAY_HARDWARE_MODULE_ID>.<ro.product.board>.so
+include $(CLEAR_VARS)
+
+LOCAL_MODULE_RELATIVE_PATH := hw
+LOCAL_PROPRIETARY_MODULE := true
+LOCAL_SHARED_LIBRARIES := liblog libEGL
+LOCAL_SRC_FILES := hwcomposer.cpp
+LOCAL_HEADER_LIBRARIES := libhardware_headers
+LOCAL_MODULE := hwcomposer.default
+LOCAL_CFLAGS:= -DLOG_TAG=\"hwcomposer\"
+LOCAL_MODULE_TAGS := optional
+include $(BUILD_SHARED_LIBRARY)

android/hardware/libhardware/modules/hwcomposer/README.android

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+
+Skeleton for the "hwcomposer" HAL module.
+

android/hardware/libhardware/modules/hwcomposer/hwcomposer.cpp

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+/*
+ * 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 <errno.h>
+#include <fcntl.h>
+#include <malloc.h>
+#include <string.h>
+
+#include <cutils/atomic.h>
+#include <log/log.h>
+
+#include <hardware/hardware.h>
+#include <hardware/hwcomposer.h>
+
+#include <EGL/egl.h>
+
+/*****************************************************************************/
+
+struct hwc_context_t {
+    hwc_composer_device_1_t device;
+    /* our private state goes below here */
+};
+
+static int hwc_device_open(const struct hw_module_t* module, const char* name,
+        struct hw_device_t** device);
+
+static struct hw_module_methods_t hwc_module_methods = {
+    .open = hwc_device_open
+};
+
+hwc_module_t HAL_MODULE_INFO_SYM = {
+    .common = {
+        .tag = HARDWARE_MODULE_TAG,
+        .version_major = 1,
+        .version_minor = 0,
+        .id = HWC_HARDWARE_MODULE_ID,
+        .name = "Sample hwcomposer module",
+        .author = "The Android Open Source Project",
+        .methods = &hwc_module_methods,
+    }
+};
+
+/*****************************************************************************/
+
+static void dump_layer(hwc_layer_1_t const* l) {
+    ALOGD("\ttype=%d, flags=%08x, handle=%p, tr=%02x, blend=%04x, {%d,%d,%d,%d}, {%d,%d,%d,%d}",
+            l->compositionType, l->flags, l->handle, l->transform, l->blending,
+            l->sourceCrop.left,
+            l->sourceCrop.top,
+            l->sourceCrop.right,
+            l->sourceCrop.bottom,
+            l->displayFrame.left,
+            l->displayFrame.top,
+            l->displayFrame.right,
+            l->displayFrame.bottom);
+}
+
+static int hwc_prepare(hwc_composer_device_1_t * /*dev*/,
+        size_t /*numDisplays*/, hwc_display_contents_1_t** displays) {
+    if (displays && (displays[0]->flags & HWC_GEOMETRY_CHANGED)) {
+        for (size_t i=0 ; i<displays[0]->numHwLayers ; i++) {
+            //dump_layer(&list->hwLayers[i]);
+            displays[0]->hwLayers[i].compositionType = HWC_FRAMEBUFFER;
+        }
+    }
+    return 0;
+}
+
+static int hwc_set(hwc_composer_device_1_t * /*dev*/,
+        size_t /*numDisplays*/, hwc_display_contents_1_t** displays)
+{
+    //for (size_t i=0 ; i<list->numHwLayers ; i++) {
+    //    dump_layer(&list->hwLayers[i]);
+    //}
+
+    EGLBoolean success = eglSwapBuffers((EGLDisplay)displays[0]->dpy,
+            (EGLSurface)displays[0]->sur);
+    if (!success) {
+        return HWC_EGL_ERROR;
+    }
+    return 0;
+}
+
+static int hwc_device_close(struct hw_device_t *dev)
+{
+    struct hwc_context_t* ctx = (struct hwc_context_t*)dev;
+    if (ctx) {
+        free(ctx);
+    }
+    return 0;
+}
+
+/*****************************************************************************/
+
+static int hwc_device_open(const struct hw_module_t* module, const char* name,
+        struct hw_device_t** device)
+{
+    int status = -EINVAL;
+    if (!strcmp(name, HWC_HARDWARE_COMPOSER)) {
+        struct hwc_context_t *dev;
+        dev = (hwc_context_t*)malloc(sizeof(*dev));
+
+        /* initialize our state here */
+        memset(dev, 0, sizeof(*dev));
+
+        /* initialize the procs */
+        dev->device.common.tag = HARDWARE_DEVICE_TAG;
+        dev->device.common.version = HWC_DEVICE_API_VERSION_1_0;
+        dev->device.common.module = const_cast<hw_module_t*>(module);
+        dev->device.common.close = hwc_device_close;
+
+        dev->device.prepare = hwc_prepare;
+        dev->device.set = hwc_set;
+
+        *device = &dev->device.common;
+        status = 0;
+    }
+    return status;
+}