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/*
* 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.
*/
#define LOG_TAG "ConsumerBase"
#define ATRACE_TAG ATRACE_TAG_GRAPHICS
//#define LOG_NDEBUG 0
#define GL_GLEXT_PROTOTYPES
#define EGL_EGLEXT_PROTOTYPES
#include <EGL/egl.h>
#include <EGL/eglext.h>
#include <hardware/hardware.h>
#include <gui/IGraphicBufferAlloc.h>
#include <gui/ISurfaceComposer.h>
#include <gui/SurfaceComposerClient.h>
#include <gui/ConsumerBase.h>
#include <private/gui/ComposerService.h>
#include <utils/Log.h>
#include <utils/String8.h>
#include <utils/Trace.h>
// Macros for including the ConsumerBase name in log messages
#define CB_LOGV(x, ...) ALOGV("[%s] "x, mName.string(), ##__VA_ARGS__)
#define CB_LOGD(x, ...) ALOGD("[%s] "x, mName.string(), ##__VA_ARGS__)
#define CB_LOGI(x, ...) ALOGI("[%s] "x, mName.string(), ##__VA_ARGS__)
#define CB_LOGW(x, ...) ALOGW("[%s] "x, mName.string(), ##__VA_ARGS__)
#define CB_LOGE(x, ...) ALOGE("[%s] "x, mName.string(), ##__VA_ARGS__)
namespace android {
// Get an ID that's unique within this process.
static int32_t createProcessUniqueId() {
static volatile int32_t globalCounter = 0;
return android_atomic_inc(&globalCounter);
}
ConsumerBase::ConsumerBase(const sp<BufferQueue>& bufferQueue) :
mAbandoned(false),
mBufferQueue(bufferQueue) {
// Choose a name using the PID and a process-unique ID.
mName = String8::format("unnamed-%d-%d", getpid(), createProcessUniqueId());
// Note that we can't create an sp<...>(this) in a ctor that will not keep a
// reference once the ctor ends, as that would cause the refcount of 'this'
// dropping to 0 at the end of the ctor. Since all we need is a wp<...>
// that's what we create.
wp<BufferQueue::ConsumerListener> listener;
sp<BufferQueue::ConsumerListener> proxy;
listener = static_cast<BufferQueue::ConsumerListener*>(this);
proxy = new BufferQueue::ProxyConsumerListener(listener);
status_t err = mBufferQueue->consumerConnect(proxy);
if (err != NO_ERROR) {
CB_LOGE("SurfaceTexture: error connecting to BufferQueue: %s (%d)",
strerror(-err), err);
} else {
mBufferQueue->setConsumerName(mName);
}
}
ConsumerBase::~ConsumerBase() {
CB_LOGV("~ConsumerBase");
abandon();
}
void ConsumerBase::freeBufferLocked(int slotIndex) {
CB_LOGV("freeBufferLocked: slotIndex=%d", slotIndex);
mSlots[slotIndex].mGraphicBuffer = 0;
mSlots[slotIndex].mFence = 0;
}
// Used for refactoring, should not be in final interface
sp<BufferQueue> ConsumerBase::getBufferQueue() const {
Mutex::Autolock lock(mMutex);
return mBufferQueue;
}
void ConsumerBase::onFrameAvailable() {
CB_LOGV("onFrameAvailable");
sp<FrameAvailableListener> listener;
{ // scope for the lock
Mutex::Autolock lock(mMutex);
listener = mFrameAvailableListener;
}
if (listener != NULL) {
CB_LOGV("actually calling onFrameAvailable");
listener->onFrameAvailable();
}
}
void ConsumerBase::onBuffersReleased() {
Mutex::Autolock lock(mMutex);
CB_LOGV("onBuffersReleased");
if (mAbandoned) {
// Nothing to do if we're already abandoned.
return;
}
uint32_t mask = 0;
mBufferQueue->getReleasedBuffers(&mask);
for (int i = 0; i < BufferQueue::NUM_BUFFER_SLOTS; i++) {
if (mask & (1 << i)) {
freeBufferLocked(i);
}
}
}
void ConsumerBase::abandon() {
CB_LOGV("abandon");
Mutex::Autolock lock(mMutex);
if (!mAbandoned) {
abandonLocked();
mAbandoned = true;
}
}
void ConsumerBase::abandonLocked() {
CB_LOGV("abandonLocked");
for (int i =0; i < BufferQueue::NUM_BUFFER_SLOTS; i++) {
freeBufferLocked(i);
}
// disconnect from the BufferQueue
mBufferQueue->consumerDisconnect();
mBufferQueue.clear();
}
void ConsumerBase::setFrameAvailableListener(
const sp<FrameAvailableListener>& listener) {
CB_LOGV("setFrameAvailableListener");
Mutex::Autolock lock(mMutex);
mFrameAvailableListener = listener;
}
void ConsumerBase::dump(String8& result) const {
char buffer[1024];
dump(result, "", buffer, 1024);
}
void ConsumerBase::dump(String8& result, const char* prefix,
char* buffer, size_t size) const {
Mutex::Autolock _l(mMutex);
dumpLocked(result, prefix, buffer, size);
}
void ConsumerBase::dumpLocked(String8& result, const char* prefix,
char* buffer, size_t SIZE) const {
snprintf(buffer, SIZE, "%smAbandoned=%d\n", prefix, int(mAbandoned));
result.append(buffer);
if (!mAbandoned) {
mBufferQueue->dump(result, prefix, buffer, SIZE);
}
}
status_t ConsumerBase::acquireBufferLocked(BufferQueue::BufferItem *item) {
status_t err = mBufferQueue->acquireBuffer(item);
if (err != NO_ERROR) {
return err;
}
if (item->mGraphicBuffer != NULL) {
mSlots[item->mBuf].mGraphicBuffer = item->mGraphicBuffer;
}
mSlots[item->mBuf].mFence = item->mFence;
CB_LOGV("acquireBufferLocked: -> slot=%d", item->mBuf);
return OK;
}
status_t ConsumerBase::addReleaseFence(int slot, const sp<Fence>& fence) {
Mutex::Autolock lock(mMutex);
return addReleaseFenceLocked(slot, fence);
}
status_t ConsumerBase::addReleaseFenceLocked(int slot, const sp<Fence>& fence) {
CB_LOGV("addReleaseFenceLocked: slot=%d", slot);
if (!mSlots[slot].mFence.get()) {
mSlots[slot].mFence = fence;
} else {
sp<Fence> mergedFence = Fence::merge(
String8::format("%.28s:%d", mName.string(), slot),
mSlots[slot].mFence, fence);
if (!mergedFence.get()) {
CB_LOGE("failed to merge release fences");
// synchronization is broken, the best we can do is hope fences
// signal in order so the new fence will act like a union
mSlots[slot].mFence = fence;
return BAD_VALUE;
}
mSlots[slot].mFence = mergedFence;
}
return OK;
}
status_t ConsumerBase::releaseBufferLocked(int slot, EGLDisplay display,
EGLSyncKHR eglFence) {
CB_LOGV("releaseBufferLocked: slot=%d", slot);
status_t err = mBufferQueue->releaseBuffer(slot, display, eglFence,
mSlots[slot].mFence);
if (err == BufferQueue::STALE_BUFFER_SLOT) {
freeBufferLocked(slot);
}
mSlots[slot].mFence.clear();
return err;
}
} // namespace android
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