/* * 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 <stdint.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <sys/types.h> #include <utils/Errors.h> #include <utils/String8.h> #include <hardware/hardware.h> #include <cutils/log.h> #include <EGL/egl.h> #include "HWComposer.h" namespace android { // --------------------------------------------------------------------------- HWComposer::HWComposer() : mModule(0), mHwc(0), mList(0), mCapacity(0), mDpy(EGL_NO_DISPLAY), mSur(EGL_NO_SURFACE) { int err = hw_get_module(HWC_HARDWARE_MODULE_ID, &mModule); LOGW_IF(err, "%s module not found", HWC_HARDWARE_MODULE_ID); if (err == 0) { err = hwc_open(mModule, &mHwc); LOGE_IF(err, "%s device failed to initialize (%s)", HWC_HARDWARE_COMPOSER, strerror(-err)); } } HWComposer::~HWComposer() { free(mList); if (mHwc) { hwc_close(mHwc); } } status_t HWComposer::initCheck() const { return mHwc ? NO_ERROR : NO_INIT; } void HWComposer::setFrameBuffer(EGLDisplay dpy, EGLSurface sur) { mDpy = (hwc_display_t)dpy; mSur = (hwc_surface_t)sur; } status_t HWComposer::createWorkList(size_t numLayers) { if (mHwc) { if (!mList || mCapacity < numLayers) { free(mList); size_t size = sizeof(hwc_layer_list) + numLayers*sizeof(hwc_layer_t); mList = (hwc_layer_list_t*)malloc(size); mCapacity = numLayers; } mList->flags = HWC_GEOMETRY_CHANGED; mList->numHwLayers = numLayers; } return NO_ERROR; } status_t HWComposer::prepare() const { int err = mHwc->prepare(mHwc, mList); return (status_t)err; } status_t HWComposer::commit() const { int err = mHwc->set(mHwc, mDpy, mSur, mList); if (mList) { mList->flags &= ~HWC_GEOMETRY_CHANGED; } return (status_t)err; } status_t HWComposer::release() const { int err = mHwc->set(mHwc, NULL, NULL, NULL); return (status_t)err; } size_t HWComposer::getNumLayers() const { return mList ? mList->numHwLayers : 0; } hwc_layer_t* HWComposer::getLayers() const { return mList ? mList->hwLayers : 0; } void HWComposer::dump(String8& result, char* buffer, size_t SIZE) const { if (mHwc && mList) { result.append("Hardware Composer state:\n"); snprintf(buffer, SIZE, " numHwLayers=%u, flags=%08x\n", mList->numHwLayers, mList->flags); result.append(buffer); for (size_t i=0 ; i<mList->numHwLayers ; i++) { const hwc_layer_t& l(mList->hwLayers[i]); snprintf(buffer, SIZE, " %8s | %08x | %08x | %02x | %04x | [%5d,%5d,%5d,%5d] | [%5d,%5d,%5d,%5d]\n", l.compositionType ? "OVERLAY" : "FB", l.hints, l.flags, 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); result.append(buffer); } } if (mHwc && mHwc->common.version >= 1 && mHwc->dump) { mHwc->dump(mHwc, buffer, SIZE); result.append(buffer); } } // --------------------------------------------------------------------------- }; // namespace android