HWComposer.cpp revision 8372785879d329f592f6883620b5a32d80d74691
1/* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#include <stdint.h> 18#include <stdio.h> 19#include <stdlib.h> 20#include <string.h> 21#include <sys/types.h> 22 23#include <utils/Errors.h> 24#include <utils/String8.h> 25 26#include <hardware/hardware.h> 27 28#include <cutils/log.h> 29 30#include <EGL/egl.h> 31 32#include "HWComposer.h" 33 34namespace android { 35// --------------------------------------------------------------------------- 36 37HWComposer::HWComposer() 38 : mModule(0), mHwc(0), mList(0), mCapacity(0), 39 mDpy(EGL_NO_DISPLAY), mSur(EGL_NO_SURFACE) 40{ 41 int err = hw_get_module(HWC_HARDWARE_MODULE_ID, &mModule); 42 LOGW_IF(err, "%s module not found", HWC_HARDWARE_MODULE_ID); 43 if (err == 0) { 44 err = hwc_open(mModule, &mHwc); 45 LOGE_IF(err, "%s device failed to initialize (%s)", 46 HWC_HARDWARE_COMPOSER, strerror(-err)); 47 } 48} 49 50HWComposer::~HWComposer() { 51 free(mList); 52 if (mHwc) { 53 hwc_close(mHwc); 54 } 55} 56 57status_t HWComposer::initCheck() const { 58 return mHwc ? NO_ERROR : NO_INIT; 59} 60 61void HWComposer::setFrameBuffer(EGLDisplay dpy, EGLSurface sur) { 62 mDpy = (hwc_display_t)dpy; 63 mSur = (hwc_surface_t)sur; 64} 65 66status_t HWComposer::createWorkList(size_t numLayers) { 67 if (mHwc) { 68 if (!mList || mCapacity < numLayers) { 69 free(mList); 70 size_t size = sizeof(hwc_layer_list) + numLayers*sizeof(hwc_layer_t); 71 mList = (hwc_layer_list_t*)malloc(size); 72 mCapacity = numLayers; 73 } 74 mList->flags = HWC_GEOMETRY_CHANGED; 75 mList->numHwLayers = numLayers; 76 } 77 return NO_ERROR; 78} 79 80status_t HWComposer::prepare() const { 81 int err = mHwc->prepare(mHwc, mList); 82 return (status_t)err; 83} 84 85status_t HWComposer::commit() const { 86 int err = mHwc->set(mHwc, mDpy, mSur, mList); 87 mList->flags &= ~HWC_GEOMETRY_CHANGED; 88 return (status_t)err; 89} 90 91status_t HWComposer::release() const { 92 int err = mHwc->set(mHwc, NULL, NULL, NULL); 93 return (status_t)err; 94} 95 96size_t HWComposer::getNumLayers() const { 97 return mList ? mList->numHwLayers : 0; 98} 99 100hwc_layer_t* HWComposer::getLayers() const { 101 return mList ? mList->hwLayers : 0; 102} 103 104void HWComposer::dump(String8& result, char* buffer, size_t SIZE) const { 105 if (mHwc && mList) { 106 result.append("Hardware Composer state:\n"); 107 108 snprintf(buffer, SIZE, " numHwLayers=%u, flags=%08x\n", 109 mList->numHwLayers, mList->flags); 110 result.append(buffer); 111 112 for (size_t i=0 ; i<mList->numHwLayers ; i++) { 113 const hwc_layer_t& l(mList->hwLayers[i]); 114 snprintf(buffer, SIZE, " %8s | %08x | %08x | %02x | %04x | [%5d,%5d,%5d,%5d] | [%5d,%5d,%5d,%5d]\n", 115 l.compositionType ? "OVERLAY" : "FB", 116 l.hints, l.flags, l.transform, l.blending, 117 l.sourceCrop.left, l.sourceCrop.top, l.sourceCrop.right, l.sourceCrop.bottom, 118 l.displayFrame.left, l.displayFrame.top, l.displayFrame.right, l.displayFrame.bottom); 119 result.append(buffer); 120 } 121 } 122} 123 124// --------------------------------------------------------------------------- 125}; // namespace android 126