132 lines
3.9 KiB
C++
132 lines
3.9 KiB
C++
/*
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* Copyright (C) 2010 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <hardware/hardware.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <malloc.h>
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#include <cutils/log.h>
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#include <cutils/atomic.h>
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#include <hardware/hwcomposer.h>
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#include <EGL/egl.h>
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/*****************************************************************************/
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struct hwc_context_t {
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hwc_composer_device_1_t device;
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/* our private state goes below here */
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};
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static int hwc_device_open(const struct hw_module_t* module, const char* name,
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struct hw_device_t** device);
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static struct hw_module_methods_t hwc_module_methods = {
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open: hwc_device_open
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};
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hwc_module_t HAL_MODULE_INFO_SYM = {
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common: {
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tag: HARDWARE_MODULE_TAG,
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version_major: 1,
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version_minor: 0,
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id: HWC_HARDWARE_MODULE_ID,
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name: "Sample hwcomposer module",
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author: "The Android Open Source Project",
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methods: &hwc_module_methods,
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}
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};
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/*****************************************************************************/
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static void dump_layer(hwc_layer_1_t const* l) {
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ALOGD("\ttype=%d, flags=%08x, handle=%p, tr=%02x, blend=%04x, {%d,%d,%d,%d}, {%d,%d,%d,%d}",
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l->compositionType, l->flags, l->handle, l->transform, l->blending,
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l->sourceCrop.left,
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l->sourceCrop.top,
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l->sourceCrop.right,
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l->sourceCrop.bottom,
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l->displayFrame.left,
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l->displayFrame.top,
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l->displayFrame.right,
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l->displayFrame.bottom);
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}
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static int hwc_prepare(hwc_composer_device_1_t *dev,
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size_t numDisplays, hwc_display_contents_1_t** displays) {
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if (displays && (displays[0]->flags & HWC_GEOMETRY_CHANGED)) {
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for (size_t i=0 ; i<displays[0]->numHwLayers ; i++) {
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//dump_layer(&list->hwLayers[i]);
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displays[0]->hwLayers[i].compositionType = HWC_FRAMEBUFFER;
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}
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}
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return 0;
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}
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static int hwc_set(hwc_composer_device_1_t *dev,
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size_t numDisplays, hwc_display_contents_1_t** displays)
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{
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//for (size_t i=0 ; i<list->numHwLayers ; i++) {
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// dump_layer(&list->hwLayers[i]);
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//}
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EGLBoolean sucess = eglSwapBuffers((EGLDisplay)displays[0]->dpy,
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(EGLSurface)displays[0]->sur);
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if (!sucess) {
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return HWC_EGL_ERROR;
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}
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return 0;
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}
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static int hwc_device_close(struct hw_device_t *dev)
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{
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struct hwc_context_t* ctx = (struct hwc_context_t*)dev;
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if (ctx) {
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free(ctx);
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}
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return 0;
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}
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/*****************************************************************************/
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static int hwc_device_open(const struct hw_module_t* module, const char* name,
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struct hw_device_t** device)
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{
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int status = -EINVAL;
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if (!strcmp(name, HWC_HARDWARE_COMPOSER)) {
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struct hwc_context_t *dev;
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dev = (hwc_context_t*)malloc(sizeof(*dev));
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/* initialize our state here */
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memset(dev, 0, sizeof(*dev));
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/* initialize the procs */
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dev->device.common.tag = HARDWARE_DEVICE_TAG;
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dev->device.common.version = HWC_DEVICE_API_VERSION_1_0;
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dev->device.common.module = const_cast<hw_module_t*>(module);
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dev->device.common.close = hwc_device_close;
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dev->device.prepare = hwc_prepare;
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dev->device.set = hwc_set;
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*device = &dev->device.common;
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status = 0;
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}
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return status;
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}
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