HWComposer.cpp revision 7ee4cd5556cef1878e1d4729f1b389f186311027
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#include "SurfaceFlinger.h" 34 35namespace android { 36// --------------------------------------------------------------------------- 37 38HWComposer::HWComposer(const sp<SurfaceFlinger>& flinger) 39 : mFlinger(flinger), 40 mModule(0), mHwc(0), mList(0), mCapacity(0), 41 mDpy(EGL_NO_DISPLAY), mSur(EGL_NO_SURFACE) 42{ 43 int err = hw_get_module(HWC_HARDWARE_MODULE_ID, &mModule); 44 LOGW_IF(err, "%s module not found", HWC_HARDWARE_MODULE_ID); 45 if (err == 0) { 46 err = hwc_open(mModule, &mHwc); 47 LOGE_IF(err, "%s device failed to initialize (%s)", 48 HWC_HARDWARE_COMPOSER, strerror(-err)); 49 if (err == 0) { 50 if (mHwc->registerProcs) { 51 mCBContext.hwc = this; 52 mCBContext.procs.invalidate = &hook_invalidate; 53 mHwc->registerProcs(mHwc, &mCBContext.procs); 54 } 55 } 56 } 57} 58 59HWComposer::~HWComposer() { 60 free(mList); 61 if (mHwc) { 62 hwc_close(mHwc); 63 } 64} 65 66status_t HWComposer::initCheck() const { 67 return mHwc ? NO_ERROR : NO_INIT; 68} 69 70void HWComposer::hook_invalidate(struct hwc_procs* procs) { 71 reinterpret_cast<cb_context *>(procs)->hwc->invalidate(); 72} 73 74void HWComposer::invalidate() { 75 mFlinger->signalEvent(); 76} 77 78void HWComposer::setFrameBuffer(EGLDisplay dpy, EGLSurface sur) { 79 mDpy = (hwc_display_t)dpy; 80 mSur = (hwc_surface_t)sur; 81} 82 83status_t HWComposer::createWorkList(size_t numLayers) { 84 if (mHwc) { 85 if (!mList || mCapacity < numLayers) { 86 free(mList); 87 size_t size = sizeof(hwc_layer_list) + numLayers*sizeof(hwc_layer_t); 88 mList = (hwc_layer_list_t*)malloc(size); 89 mCapacity = numLayers; 90 } 91 mList->flags = HWC_GEOMETRY_CHANGED; 92 mList->numHwLayers = numLayers; 93 } 94 return NO_ERROR; 95} 96 97status_t HWComposer::prepare() const { 98 int err = mHwc->prepare(mHwc, mList); 99 return (status_t)err; 100} 101 102status_t HWComposer::commit() const { 103 int err = mHwc->set(mHwc, mDpy, mSur, mList); 104 if (mList) { 105 mList->flags &= ~HWC_GEOMETRY_CHANGED; 106 } 107 return (status_t)err; 108} 109 110status_t HWComposer::release() const { 111 if (mHwc) { 112 int err = mHwc->set(mHwc, NULL, NULL, NULL); 113 return (status_t)err; 114 } 115 return NO_ERROR; 116} 117 118status_t HWComposer::disable() { 119 if (mHwc) { 120 free(mList); 121 mList = NULL; 122 int err = mHwc->prepare(mHwc, NULL); 123 return (status_t)err; 124 } 125 return NO_ERROR; 126} 127 128size_t HWComposer::getNumLayers() const { 129 return mList ? mList->numHwLayers : 0; 130} 131 132hwc_layer_t* HWComposer::getLayers() const { 133 return mList ? mList->hwLayers : 0; 134} 135 136void HWComposer::dump(String8& result, char* buffer, size_t SIZE) const { 137 if (mHwc && mList) { 138 result.append("Hardware Composer state:\n"); 139 140 snprintf(buffer, SIZE, " numHwLayers=%u, flags=%08x\n", 141 mList->numHwLayers, mList->flags); 142 result.append(buffer); 143 144 for (size_t i=0 ; i<mList->numHwLayers ; i++) { 145 const hwc_layer_t& l(mList->hwLayers[i]); 146 snprintf(buffer, SIZE, " %8s | %08x | %08x | %02x | %04x | [%5d,%5d,%5d,%5d] | [%5d,%5d,%5d,%5d]\n", 147 l.compositionType ? "OVERLAY" : "FB", 148 l.hints, l.flags, l.transform, l.blending, 149 l.sourceCrop.left, l.sourceCrop.top, l.sourceCrop.right, l.sourceCrop.bottom, 150 l.displayFrame.left, l.displayFrame.top, l.displayFrame.right, l.displayFrame.bottom); 151 result.append(buffer); 152 } 153 154 } 155 if (mHwc && mHwc->common.version >= 1 && mHwc->dump) { 156 mHwc->dump(mHwc, buffer, SIZE); 157 result.append(buffer); 158 } 159} 160 161// --------------------------------------------------------------------------- 162}; // namespace android 163