Initial skeleton for hwcomposer, no functionality

Signed-off-by: Tapani Pälli <tapani.palli@intel.com>

diff --git a/Android.mk b/Android.mk
new file mode 100644 (file)
index 0000000..00f22f4
--- /dev/null
+++ b/Android.mk
@@ -0,0 +1,27 @@
+# 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)
+include $(CLEAR_VARS)
+
+LOCAL_MODULE_PATH := $(TARGET_OUT_SHARED_LIBRARIES)/hw
+LOCAL_SHARED_LIBRARIES := liblog libEGL libhardware
+LOCAL_CFLAGS := -DEGL_EGLEXT_PROTOTYPES
+LOCAL_C_INCLUDES += bionic hardware/drm_gralloc external/drm external/drm/include/drm
+LOCAL_SRC_FILES := hwcomposer.cpp
+LOCAL_MODULE := hwcomposer.$(TARGET_PRODUCT)
+LOCAL_MODULE_TAGS := optional
+include $(BUILD_SHARED_LIBRARY)
+

diff --git a/hwcomposer.cpp b/hwcomposer.cpp
new file mode 100644 (file)
index 0000000..9549804
--- /dev/null
+++ b/hwcomposer.cpp
@@ -0,0 +1,140 @@
+/*
+ * Copyright (C) 2012 Intel Corporation. All rights reserved.
+ *
+ * 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 <hardware/hardware.h>
+#include <hardware/hwcomposer.h>
+#include <hardware/gralloc.h>
+
+#include <gralloc_drm.h>
+#include <gralloc_drm_priv.h>
+#include <gralloc_drm_handle.h>
+
+#include <fcntl.h>
+#include <errno.h>
+
+#include <cutils/log.h>
+#include <cutils/atomic.h>
+
+#include <hardware/hwcomposer.h>
+
+#include <EGL/egl.h>
+
+struct hwc_context_t {
+       hwc_composer_device_t device;
+       struct drm_module_t *gralloc_module;
+};
+
+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: "Intel hwcomposer module",
+               author: "Intel",
+               methods: &hwc_module_methods,
+       }
+};
+
+
+static int hwc_prepare(hwc_composer_device_t *dev, hwc_layer_list_t* list)
+{
+       struct hwc_context_t* ctx = (struct hwc_context_t *) &dev->common;
+
+       // SurfaceFlinger wants to handle the complete composition
+       if (!list || list->numHwLayers == 0)
+               return 0;
+
+       int topmost = list->numHwLayers;
+       if (list->numHwLayers > 0)
+               topmost--;
+
+       if (list->flags & HWC_GEOMETRY_CHANGED) {
+               for (int i=topmost; i>=0; i--) {
+                       list->hwLayers[i].compositionType = HWC_FRAMEBUFFER;
+               }
+       }
+       return 0;
+}
+
+
+static int hwc_set(hwc_composer_device_t *dev,
+               hwc_display_t dpy,
+               hwc_surface_t sur,
+               hwc_layer_list_t* list)
+{
+       struct hwc_context_t* ctx = (struct hwc_context_t*)dev;
+       EGLBoolean success;
+
+       // display is turning off
+       if (!dpy && !sur && !list)
+               return 0;
+
+       success = eglSwapBuffers((EGLDisplay)dpy, (EGLSurface)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))
+               return status;
+
+       struct hwc_context_t *dev;
+       dev = (hwc_context_t*)calloc(1, sizeof(*dev));
+
+       /* initialize the procs */
+       dev->device.common.tag = HARDWARE_DEVICE_TAG;
+       dev->device.common.version = 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;
+
+       int err = hw_get_module(GRALLOC_HARDWARE_MODULE_ID,
+               (const hw_module_t **)&dev->gralloc_module);
+
+       ALOGD("Intel hwcomposer module");
+
+       return 0;
+}