ConsumerBase.cpp revision 1a4d883dcc1725892bfb5c28dec255a233186524
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#define LOG_TAG "ConsumerBase" 18#define ATRACE_TAG ATRACE_TAG_GRAPHICS 19//#define LOG_NDEBUG 0 20 21#define GL_GLEXT_PROTOTYPES 22#define EGL_EGLEXT_PROTOTYPES 23 24#include <EGL/egl.h> 25#include <EGL/eglext.h> 26 27#include <hardware/hardware.h> 28 29#include <gui/IGraphicBufferAlloc.h> 30#include <gui/ISurfaceComposer.h> 31#include <gui/SurfaceComposerClient.h> 32#include <gui/ConsumerBase.h> 33 34#include <private/gui/ComposerService.h> 35 36#include <utils/Log.h> 37#include <utils/String8.h> 38#include <utils/Trace.h> 39 40// Macros for including the ConsumerBase name in log messages 41#define CB_LOGV(x, ...) ALOGV("[%s] "x, mName.string(), ##__VA_ARGS__) 42#define CB_LOGD(x, ...) ALOGD("[%s] "x, mName.string(), ##__VA_ARGS__) 43#define CB_LOGI(x, ...) ALOGI("[%s] "x, mName.string(), ##__VA_ARGS__) 44#define CB_LOGW(x, ...) ALOGW("[%s] "x, mName.string(), ##__VA_ARGS__) 45#define CB_LOGE(x, ...) ALOGE("[%s] "x, mName.string(), ##__VA_ARGS__) 46 47namespace android { 48 49// Get an ID that's unique within this process. 50static int32_t createProcessUniqueId() { 51 static volatile int32_t globalCounter = 0; 52 return android_atomic_inc(&globalCounter); 53} 54 55ConsumerBase::ConsumerBase(const sp<BufferQueue>& bufferQueue) : 56 mBufferQueue(bufferQueue) { 57 // Choose a name using the PID and a process-unique ID. 58 mName = String8::format("unnamed-%d-%d", getpid(), createProcessUniqueId()); 59 60 // Note that we can't create an sp<...>(this) in a ctor that will not keep a 61 // reference once the ctor ends, as that would cause the refcount of 'this' 62 // dropping to 0 at the end of the ctor. Since all we need is a wp<...> 63 // that's what we create. 64 wp<BufferQueue::ConsumerListener> listener; 65 sp<BufferQueue::ConsumerListener> proxy; 66 listener = static_cast<BufferQueue::ConsumerListener*>(this); 67 proxy = new BufferQueue::ProxyConsumerListener(listener); 68 69 status_t err = mBufferQueue->consumerConnect(proxy); 70 if (err != NO_ERROR) { 71 CB_LOGE("SurfaceTexture: error connecting to BufferQueue: %s (%d)", 72 strerror(-err), err); 73 } else { 74 mBufferQueue->setConsumerName(mName); 75 } 76} 77 78ConsumerBase::~ConsumerBase() { 79 CB_LOGV("~ConsumerBase"); 80 abandon(); 81} 82 83void ConsumerBase::freeBufferLocked(int slotIndex) { 84 CB_LOGV("freeBufferLocked: slotIndex=%d", slotIndex); 85 mSlots[slotIndex].mGraphicBuffer = 0; 86 mSlots[slotIndex].mFence = 0; 87} 88 89// Used for refactoring, should not be in final interface 90sp<BufferQueue> ConsumerBase::getBufferQueue() const { 91 Mutex::Autolock lock(mMutex); 92 return mBufferQueue; 93} 94 95void ConsumerBase::onFrameAvailable() { 96 CB_LOGV("onFrameAvailable"); 97 98 sp<FrameAvailableListener> listener; 99 { // scope for the lock 100 Mutex::Autolock lock(mMutex); 101 listener = mFrameAvailableListener; 102 } 103 104 if (listener != NULL) { 105 CB_LOGV("actually calling onFrameAvailable"); 106 listener->onFrameAvailable(); 107 } 108} 109 110void ConsumerBase::onBuffersReleased() { 111 Mutex::Autolock lock(mMutex); 112 113 CB_LOGV("onBuffersReleased"); 114 115 if (mAbandoned) { 116 // Nothing to do if we're already abandoned. 117 return; 118 } 119 120 uint32_t mask = 0; 121 mBufferQueue->getReleasedBuffers(&mask); 122 for (int i = 0; i < BufferQueue::NUM_BUFFER_SLOTS; i++) { 123 if (mask & (1 << i)) { 124 freeBufferLocked(i); 125 } 126 } 127} 128 129void ConsumerBase::abandon() { 130 CB_LOGV("abandon"); 131 Mutex::Autolock lock(mMutex); 132 133 if (!mAbandoned) { 134 abandonLocked(); 135 mAbandoned = true; 136 } 137} 138 139void ConsumerBase::abandonLocked() { 140 CB_LOGV("abandonLocked"); 141 for (int i =0; i < BufferQueue::NUM_BUFFER_SLOTS; i++) { 142 freeBufferLocked(i); 143 } 144 // disconnect from the BufferQueue 145 mBufferQueue->consumerDisconnect(); 146 mBufferQueue.clear(); 147} 148 149void ConsumerBase::setFrameAvailableListener( 150 const sp<FrameAvailableListener>& listener) { 151 CB_LOGV("setFrameAvailableListener"); 152 Mutex::Autolock lock(mMutex); 153 mFrameAvailableListener = listener; 154} 155 156void ConsumerBase::dump(String8& result) const { 157 char buffer[1024]; 158 dump(result, "", buffer, 1024); 159} 160 161void ConsumerBase::dump(String8& result, const char* prefix, 162 char* buffer, size_t size) const { 163 Mutex::Autolock _l(mMutex); 164 dumpLocked(result, prefix, buffer, size); 165} 166 167void ConsumerBase::dumpLocked(String8& result, const char* prefix, 168 char* buffer, size_t SIZE) const { 169 snprintf(buffer, SIZE, "%smAbandoned=%d\n", prefix, int(mAbandoned)); 170 result.append(buffer); 171 172 if (!mAbandoned) { 173 mBufferQueue->dump(result, prefix, buffer, SIZE); 174 } 175} 176 177status_t ConsumerBase::acquireBufferLocked(BufferQueue::BufferItem *item) { 178 status_t err = mBufferQueue->acquireBuffer(item); 179 if (err != NO_ERROR) { 180 return err; 181 } 182 183 if (item->mGraphicBuffer != NULL) { 184 mSlots[item->mBuf].mGraphicBuffer = item->mGraphicBuffer; 185 } 186 187 CB_LOGV("acquireBufferLocked: -> slot=%d", item->mBuf); 188 189 return OK; 190} 191 192status_t ConsumerBase::releaseBufferLocked(int slot, EGLDisplay display, 193 EGLSyncKHR eglFence, const sp<Fence>& fence) { 194 CB_LOGV("releaseBufferLocked: slot=%d", slot); 195 status_t err = mBufferQueue->releaseBuffer(slot, display, eglFence, fence); 196 if (err == BufferQueue::STALE_BUFFER_SLOT) { 197 freeBufferLocked(slot); 198 } 199 200 mSlots[slot].mFence.clear(); 201 202 return err; 203} 204 205} // namespace android