C++ ST_LOGV函数代码示例

Rect SurfaceTexture::getCurrentCrop() const {
    Mutex::Autolock lock(mMutex);

    Rect outCrop = mCurrentCrop;
    if (mCurrentScalingMode == NATIVE_WINDOW_SCALING_MODE_SCALE_CROP) {
        int32_t newWidth = mCurrentCrop.width();
        int32_t newHeight = mCurrentCrop.height();

        if (newWidth * mDefaultHeight > newHeight * mDefaultWidth) {
            newWidth = newHeight * mDefaultWidth / mDefaultHeight;
            ST_LOGV("too wide: newWidth = %d", newWidth);
        } else if (newWidth * mDefaultHeight < newHeight * mDefaultWidth) {
            newHeight = newWidth * mDefaultHeight / mDefaultWidth;
            ST_LOGV("too tall: newHeight = %d", newHeight);
        }

        // The crop is too wide
        if (newWidth < mCurrentCrop.width()) {
            int32_t dw = (newWidth - mCurrentCrop.width())/2;
            outCrop.left -=dw;
            outCrop.right += dw;
        // The crop is too tall
        } else if (newHeight < mCurrentCrop.height()) {
            int32_t dh = (newHeight - mCurrentCrop.height())/2;
            outCrop.top -= dh;
            outCrop.bottom += dh;
        }

        ST_LOGV("getCurrentCrop final crop [%d,%d,%d,%d]",
            outCrop.left, outCrop.top,
            outCrop.right,outCrop.bottom);
    }

    return outCrop;
}

void SurfaceTexture::freeBufferLocked(int slotIndex) {
    ST_LOGV("freeBufferLocked: slotIndex=%d", slotIndex);
    if (slotIndex == mCurrentTexture) {
        mCurrentTexture = BufferQueue::INVALID_BUFFER_SLOT;
    }
    EGLImageKHR img = mEglSlots[slotIndex].mEglImage;
    if (img != EGL_NO_IMAGE_KHR) {
        ST_LOGV("destroying EGLImage dpy=%p img=%p", mEglDisplay, img);
        eglDestroyImageKHR(mEglDisplay, img);
    }
    mEglSlots[slotIndex].mEglImage = EGL_NO_IMAGE_KHR;
    ConsumerBase::freeBufferLocked(slotIndex);
}

SurfaceTexture::SurfaceTexture(GLuint tex, bool allowSynchronousMode,
        GLenum texTarget, bool useFenceSync, const sp<BufferQueue> &bufferQueue) :
    mCurrentTransform(0),
    mCurrentTimestamp(0),
    mFilteringEnabled(true),
    mTexName(tex),
#ifdef USE_FENCE_SYNC
    mUseFenceSync(useFenceSync),
#else
    mUseFenceSync(false),
#endif
    mTexTarget(texTarget),
    mEglDisplay(EGL_NO_DISPLAY),
    mEglContext(EGL_NO_CONTEXT),
    mAbandoned(false),
    mCurrentTexture(BufferQueue::INVALID_BUFFER_SLOT),
    mAttached(true)
{
    // Choose a name using the PID and a process-unique ID.
    mName = String8::format("unnamed-%d-%d", getpid(), createProcessUniqueId());
    ST_LOGV("SurfaceTexture");
    if (bufferQueue == 0) {
        ST_LOGV("Creating a new BufferQueue");
        mBufferQueue = new BufferQueue(allowSynchronousMode);
    }
    else {
        mBufferQueue = bufferQueue;
    }

    memcpy(mCurrentTransformMatrix, mtxIdentity,
            sizeof(mCurrentTransformMatrix));

    // 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) {
        ST_LOGE("SurfaceTexture: error connecting to BufferQueue: %s (%d)",
                strerror(-err), err);
    } else {
        mBufferQueue->setConsumerName(mName);
        mBufferQueue->setConsumerUsageBits(DEFAULT_USAGE_FLAGS);
    }
}

void SurfaceTexture::onFrameAvailable() {
    ST_LOGV("onFrameAvailable");

    sp<FrameAvailableListener> listener;
    { // scope for the lock
        Mutex::Autolock lock(mMutex);
        listener = mFrameAvailableListener;
    }

    if (listener != NULL) {
        ST_LOGV("actually calling onFrameAvailable");
        listener->onFrameAvailable();
    }
}

status_t GLConsumer::detachFromContext() {
    ATRACE_CALL();
#ifndef MTK_DEFAULT_AOSP
    ST_LOGI("detachFromContext");
#else
    ST_LOGV("detachFromContext");
#endif
    Mutex::Autolock lock(mMutex);

    if (mAbandoned) {
        ST_LOGE("detachFromContext: abandoned GLConsumer");
        return NO_INIT;
    }

    if (!mAttached) {
        ST_LOGE("detachFromContext: GLConsumer is not attached to a "
                "context");
        return INVALID_OPERATION;
    }

    EGLDisplay dpy = eglGetCurrentDisplay();
    EGLContext ctx = eglGetCurrentContext();

    if (mEglDisplay != dpy && mEglDisplay != EGL_NO_DISPLAY) {
        ST_LOGE("detachFromContext: invalid current EGLDisplay");
        return INVALID_OPERATION;
    }

    if (mEglContext != ctx && mEglContext != EGL_NO_CONTEXT) {
        ST_LOGE("detachFromContext: invalid current EGLContext");
        return INVALID_OPERATION;
    }

    if (dpy != EGL_NO_DISPLAY && ctx != EGL_NO_CONTEXT) {
        status_t err = syncForReleaseLocked(dpy);
        if (err != OK) {
            return err;
        }

        glDeleteTextures(1, &mTexName);
    }

    // Because we're giving up the EGLDisplay we need to free all the EGLImages
    // that are associated with it.  They'll be recreated when the
    // GLConsumer gets attached to a new OpenGL ES context (and thus gets a
    // new EGLDisplay).
    for (int i =0; i < BufferQueue::NUM_BUFFER_SLOTS; i++) {
        EGLImageKHR img = mEglSlots[i].mEglImage;
        if (img != EGL_NO_IMAGE_KHR) {
            eglDestroyImageKHR(mEglDisplay, img);
            mEglSlots[i].mEglImage = EGL_NO_IMAGE_KHR;
        }
    }

    mEglDisplay = EGL_NO_DISPLAY;
    mEglContext = EGL_NO_CONTEXT;
    mAttached = false;

    return OK;
}

GLConsumer::GLConsumer(const sp<IGraphicBufferConsumer>& bq, uint32_t tex,
        uint32_t texTarget, bool useFenceSync, bool isControlledByApp) :
    ConsumerBase(bq, isControlledByApp),
    mCurrentTransform(0),
    mCurrentScalingMode(NATIVE_WINDOW_SCALING_MODE_FREEZE),
    mCurrentFence(Fence::NO_FENCE),
    mCurrentTimestamp(0),
    mCurrentFrameNumber(0),
    mDefaultWidth(1),
    mDefaultHeight(1),
    mFilteringEnabled(true),
    mTexName(tex),
    mUseFenceSync(useFenceSync),
    mTexTarget(texTarget),
    mEglDisplay(EGL_NO_DISPLAY),
    mEglContext(EGL_NO_CONTEXT),
    mCurrentTexture(BufferQueue::INVALID_BUFFER_SLOT),
    mAttached(true)
{
#ifndef MTK_DEFAULT_AOSP
    ST_LOGI("GLConsumer");
#else
    ST_LOGV("GLConsumer");
#endif

    memcpy(mCurrentTransformMatrix, mtxIdentity,
            sizeof(mCurrentTransformMatrix));

    mConsumer->setConsumerUsageBits(DEFAULT_USAGE_FLAGS);
}

status_t GLConsumer::bindUnslottedBufferLocked(EGLDisplay dpy) {
    ST_LOGV("bindUnslottedBuffer ct=%d ctb=%p",
            mCurrentTexture, mCurrentTextureBuf.get());

    // Create a temporary EGLImageKHR.
    Rect crop;
    EGLImageKHR image = createImage(dpy, mCurrentTextureBuf, mCurrentCrop);
    if (image == EGL_NO_IMAGE_KHR) {
        return UNKNOWN_ERROR;
    }

    // Attach the current buffer to the GL texture.
    glEGLImageTargetTexture2DOES(mTexTarget, (GLeglImageOES)image);

    GLint error;
    status_t err = OK;
    while ((error = glGetError()) != GL_NO_ERROR) {
        ST_LOGE("bindUnslottedBuffer: error binding external texture image %p "
                "(slot %d): %#04x", image, mCurrentTexture, error);
        err = UNKNOWN_ERROR;
    }

    // We destroy the EGLImageKHR here because the current buffer may no
    // longer be associated with one of the buffer slots, so we have
    // nowhere to to store it.  If the buffer is still associated with a
    // slot then another EGLImageKHR will be created next time that buffer
    // gets acquired in updateTexImage.
    eglDestroyImageKHR(dpy, image);

    return err;
}

status_t SurfaceTexture::connect(int api,
        uint32_t* outWidth, uint32_t* outHeight, uint32_t* outTransform) {
    ST_LOGV("connect: api=%d", api);
    Mutex::Autolock lock(mMutex);

    if (mAbandoned) {
        ST_LOGE("connect: SurfaceTexture has been abandoned!");
        return NO_INIT;
    }

    int err = NO_ERROR;
    switch (api) {
        case NATIVE_WINDOW_API_EGL:
        case NATIVE_WINDOW_API_CPU:
        case NATIVE_WINDOW_API_MEDIA:
        case NATIVE_WINDOW_API_CAMERA:
            if (mConnectedApi != NO_CONNECTED_API) {
                ST_LOGE("connect: already connected (cur=%d, req=%d)",
                        mConnectedApi, api);
                err = -EINVAL;
            } else {
                mConnectedApi = api;
                *outWidth = mDefaultWidth;
                *outHeight = mDefaultHeight;
                *outTransform = 0;
            }
            break;
        default:
            err = -EINVAL;
            break;
    }
    return err;
}

GLConsumer::GLConsumer(GLuint tex, bool allowSynchronousMode,
                       GLenum texTarget, bool useFenceSync, const sp<BufferQueue> &bufferQueue) :
    ConsumerBase(bufferQueue == 0 ? new BufferQueue(allowSynchronousMode) : bufferQueue),
    mCurrentTransform(0),
    mCurrentScalingMode(NATIVE_WINDOW_SCALING_MODE_FREEZE),
    mCurrentFence(Fence::NO_FENCE),
    mCurrentTimestamp(0),
    mDefaultWidth(1),
    mDefaultHeight(1),
    mFilteringEnabled(true),
    mTexName(tex),
    mUseFenceSync(useFenceSync),
    mTexTarget(texTarget),
    mEglDisplay(EGL_NO_DISPLAY),
    mEglContext(EGL_NO_CONTEXT),
    mCurrentTexture(BufferQueue::INVALID_BUFFER_SLOT),
    mAttached(true)
{
    ST_LOGV("GLConsumer");

    memcpy(mCurrentTransformMatrix, mtxIdentity,
           sizeof(mCurrentTransformMatrix));

    mBufferQueue->setConsumerUsageBits(DEFAULT_USAGE_FLAGS);
}

BufferQueue::BufferQueue(bool allowSynchronousMode,
        const sp<IGraphicBufferAlloc>& allocator) :
    mDefaultWidth(1),
    mDefaultHeight(1),
    mMaxAcquiredBufferCount(1),
    mDefaultMaxBufferCount(2),
    mOverrideMaxBufferCount(0),
    mSynchronousMode(false),
    mAllowSynchronousMode(allowSynchronousMode),
    mConnectedApi(NO_CONNECTED_API),
    mAbandoned(false),
    mFrameCounter(0),
    mBufferHasBeenQueued(false),
    mDefaultBufferFormat(PIXEL_FORMAT_RGBA_8888),
    mConsumerUsageBits(0),
    mTransformHint(0)
{
    // Choose a name using the PID and a process-unique ID.
    mConsumerName = String8::format("unnamed-%d-%d", getpid(), createProcessUniqueId());

    ST_LOGV("BufferQueue");
    if (allocator == NULL) {
        sp<ISurfaceComposer> composer(ComposerService::getComposerService());
        mGraphicBufferAlloc = composer->createGraphicBufferAlloc();
        if (mGraphicBufferAlloc == 0) {
            ST_LOGE("createGraphicBufferAlloc() failed in BufferQueue()");
        }
    } else {
        mGraphicBufferAlloc = allocator;
    }
}

void BufferQueue::cancelBuffer(int buf, const sp<Fence>& fence) {
    ATRACE_CALL();
    ST_LOGV("cancelBuffer: slot=%d", buf);
    Mutex::Autolock lock(mMutex);

    if (mAbandoned) {
        ST_LOGW("cancelBuffer: BufferQueue has been abandoned!");
        return;
    }

    int maxBufferCount = getMaxBufferCountLocked();
    if (buf < 0 || buf >= maxBufferCount) {
        ST_LOGE("cancelBuffer: slot index out of range [0, %d]: %d",
                maxBufferCount, buf);
        return;
    } else if (mSlots[buf].mBufferState != BufferSlot::DEQUEUED) {
        ST_LOGE("cancelBuffer: slot %d is not owned by the client (state=%d)",
                buf, mSlots[buf].mBufferState);
        return;
    } else if (fence == NULL) {
        ST_LOGE("cancelBuffer: fence is NULL");
        return;
    }
    mSlots[buf].mBufferState = BufferSlot::FREE;
    mSlots[buf].mFrameNumber = 0;
    mSlots[buf].mFence = fence;
    mDequeueCondition.broadcast();
}

SurfaceTexture::SurfaceTexture(GLuint tex, bool allowSynchronousMode,
        GLenum texTarget, bool useFenceSync, const sp<BufferQueue> &bufferQueue) :
    ConsumerBase(bufferQueue == 0 ? new BufferQueue(allowSynchronousMode) : bufferQueue),
    mCurrentTransform(0),
    mCurrentTimestamp(0),
    mFilteringEnabled(true),
    mTexName(tex),
#ifdef USE_FENCE_SYNC
    mUseFenceSync(useFenceSync),
#else
    mUseFenceSync(false),
#endif
    mTexTarget(texTarget),
    mEglDisplay(EGL_NO_DISPLAY),
    mEglContext(EGL_NO_CONTEXT),
    mCurrentTexture(BufferQueue::INVALID_BUFFER_SLOT),
    mAttached(true)
{
    ST_LOGV("SurfaceTexture");

    memcpy(mCurrentTransformMatrix, mtxIdentity,
            sizeof(mCurrentTransformMatrix));

    mBufferQueue->setConsumerUsageBits(DEFAULT_USAGE_FLAGS);
}

status_t BufferQueue::setBufferCount(int bufferCount) {
    ST_LOGV("setBufferCount: count=%d", bufferCount);

    sp<ConsumerListener> listener;
    {
        Mutex::Autolock lock(mMutex);

        if (mAbandoned) {
            ST_LOGE("setBufferCount: BufferQueue has been abandoned!");
            return NO_INIT;
        }
        if (bufferCount > NUM_BUFFER_SLOTS) {
            ST_LOGE("setBufferCount: bufferCount too large (max %d)",
                    NUM_BUFFER_SLOTS);
            return BAD_VALUE;
        }

        // Error out if the user has dequeued buffers
        int maxBufferCount = getMaxBufferCountLocked();
        for (int i=0 ; i<maxBufferCount; i++) {
            if (mSlots[i].mBufferState == BufferSlot::DEQUEUED) {
                ST_LOGE("setBufferCount: client owns some buffers");
                return -EINVAL;
            }
        }

        const int minBufferSlots = getMinMaxBufferCountLocked();
        if (bufferCount == 0) {
            mOverrideMaxBufferCount = 0;
            mDequeueCondition.broadcast();
            return NO_ERROR;
        }

        if (bufferCount < minBufferSlots) {
            ST_LOGE("setBufferCount: requested buffer count (%d) is less than "
                    "minimum (%d)", bufferCount, minBufferSlots);
            return BAD_VALUE;
        }

        // here we're guaranteed that the client doesn't have dequeued buffers
        // and will release all of its buffer references.
        //
        // XXX: Should this use drainQueueAndFreeBuffersLocked instead?
        freeAllBuffersLocked();
        mOverrideMaxBufferCount = bufferCount;
        mBufferHasBeenQueued = false;
        mDequeueCondition.broadcast();
        listener = mConsumerListener;
    } // scope for lock

    if (listener != NULL) {
        listener->onBuffersReleased();
    }

    return NO_ERROR;
}