94 lines
2.5 KiB
C++
94 lines
2.5 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 <stdint.h>
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#include <sys/types.h>
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#include <utils/Errors.h>
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#include <hardware/hardware.h>
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#include <cutils/log.h>
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#include <EGL/egl.h>
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#include "HWComposer.h"
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namespace android {
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// ---------------------------------------------------------------------------
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HWComposer::HWComposer()
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: mModule(0), mHwc(0), mList(0),
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mDpy(EGL_NO_DISPLAY), mSur(EGL_NO_SURFACE)
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{
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int err = hw_get_module(HWC_HARDWARE_MODULE_ID, &mModule);
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LOGW_IF(err, "%s module not found", HWC_HARDWARE_MODULE_ID);
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if (err == 0) {
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err = hwc_open(mModule, &mHwc);
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LOGE_IF(err, "%s device failed to initialize (%s)",
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HWC_HARDWARE_COMPOSER, strerror(-err));
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}
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}
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HWComposer::~HWComposer() {
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free(mList);
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if (mHwc) {
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hwc_close(mHwc);
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}
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}
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status_t HWComposer::initCheck() const {
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return mHwc ? NO_ERROR : NO_INIT;
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}
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void HWComposer::setFrameBuffer(EGLDisplay dpy, EGLSurface sur) {
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mDpy = (hwc_display_t)dpy;
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mSur = (hwc_surface_t)sur;
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}
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status_t HWComposer::createWorkList(size_t numLayers) {
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if (mHwc && (!mList || mList->numHwLayers < numLayers)) {
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free(mList);
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size_t size = sizeof(hwc_layer_list) + numLayers*sizeof(hwc_layer_t);
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mList = (hwc_layer_list_t*)malloc(size);
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mList->flags = HWC_GEOMETRY_CHANGED;
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mList->numHwLayers = numLayers;
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}
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return NO_ERROR;
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}
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status_t HWComposer::prepare() const {
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int err = mHwc->prepare(mHwc, mList);
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return (status_t)err;
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}
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status_t HWComposer::commit() const {
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int err = mHwc->set(mHwc, mDpy, mSur, mList);
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mList->flags &= ~HWC_GEOMETRY_CHANGED;
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return (status_t)err;
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}
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HWComposer::iterator HWComposer::begin() {
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return mList ? &(mList->hwLayers[0]) : NULL;
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}
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HWComposer::iterator HWComposer::end() {
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return mList ? &(mList->hwLayers[mList->numHwLayers]) : NULL;
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}
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// ---------------------------------------------------------------------------
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}; // namespace android
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