133 lines
3.8 KiB
C++
133 lines
3.8 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 <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/types.h>
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#include <utils/Errors.h>
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#include <utils/String8.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), mCapacity(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) {
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if (!mList || mCapacity < 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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mCapacity = numLayers;
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}
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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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if (mList) {
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mList->flags &= ~HWC_GEOMETRY_CHANGED;
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}
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return (status_t)err;
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}
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status_t HWComposer::release() const {
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int err = mHwc->set(mHwc, NULL, NULL, NULL);
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return (status_t)err;
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}
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size_t HWComposer::getNumLayers() const {
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return mList ? mList->numHwLayers : 0;
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}
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hwc_layer_t* HWComposer::getLayers() const {
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return mList ? mList->hwLayers : 0;
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}
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void HWComposer::dump(String8& result, char* buffer, size_t SIZE) const {
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if (mHwc && mList) {
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result.append("Hardware Composer state:\n");
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snprintf(buffer, SIZE, " numHwLayers=%u, flags=%08x\n",
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mList->numHwLayers, mList->flags);
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result.append(buffer);
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for (size_t i=0 ; i<mList->numHwLayers ; i++) {
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const hwc_layer_t& l(mList->hwLayers[i]);
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snprintf(buffer, SIZE, " %8s | %08x | %08x | %02x | %04x | [%5d,%5d,%5d,%5d] | [%5d,%5d,%5d,%5d]\n",
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l.compositionType ? "OVERLAY" : "FB",
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l.hints, l.flags, l.transform, l.blending,
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l.sourceCrop.left, l.sourceCrop.top, l.sourceCrop.right, l.sourceCrop.bottom,
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l.displayFrame.left, l.displayFrame.top, l.displayFrame.right, l.displayFrame.bottom);
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result.append(buffer);
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}
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}
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if (mHwc && mHwc->common.version >= 1 && mHwc->dump) {
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mHwc->dump(mHwc, buffer, SIZE);
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result.append(buffer);
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}
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}
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// ---------------------------------------------------------------------------
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}; // namespace android
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