status_t GLConsumer::updateTexImage() {
ATRACE_CALL();
ST_LOGV("updateTexImage");
Mutex::Autolock lock(mMutex);
if (mAbandoned) {
ST_LOGE("updateTexImage: GLConsumer is abandoned!");
return NO_INIT;
}
// Make sure the EGL state is the same as in previous calls.
status_t err = checkAndUpdateEglStateLocked();
if (err != NO_ERROR) {
return err;
}
BufferQueue::BufferItem item;
// Acquire the next buffer.
// In asynchronous mode the list is guaranteed to be one buffer
// deep, while in synchronous mode we use the oldest buffer.
err = acquireBufferLocked(&item, 0);
if (err != NO_ERROR) {
if (err == BufferQueue::NO_BUFFER_AVAILABLE) {
// We always bind the texture even if we don't update its contents.
ST_LOGV("updateTexImage: no buffers were available");
glBindTexture(mTexTarget, mTexName);
err = NO_ERROR;
} else {
ST_LOGE("updateTexImage: acquire failed: %s (%d)",
strerror(-err), err);
}
return err;
}
// Release the previous buffer.
err = updateAndReleaseLocked(item);
if (err != NO_ERROR) {
// We always bind the texture.
glBindTexture(mTexTarget, mTexName);
return err;
}
// Bind the new buffer to the GL texture, and wait until it's ready.
return bindTextureImageLocked();
}
status_t SurfaceFlingerConsumer::updateTexImage(BufferRejecter* rejecter)
{
ATRACE_CALL();
ALOGV("updateTexImage");
Mutex::Autolock lock(mMutex);
if (mAbandoned) {
ALOGE("updateTexImage: GLConsumer is abandoned!");
return NO_INIT;
}
// Make sure the EGL state is the same as in previous calls.
status_t err = checkAndUpdateEglStateLocked();
if (err != NO_ERROR) {
return err;
}
BufferQueue::BufferItem item;
// Acquire the next buffer.
// In asynchronous mode the list is guaranteed to be one buffer
// deep, while in synchronous mode we use the oldest buffer.
err = acquireBufferLocked(&item);
if (err != NO_ERROR) {
if (err == BufferQueue::NO_BUFFER_AVAILABLE) {
// This variant of updateTexImage does not guarantee that the
// texture is bound, so no need to call glBindTexture.
err = NO_ERROR;
} else {
ALOGE("updateTexImage: acquire failed: %s (%d)",
strerror(-err), err);
}
return err;
}
// We call the rejecter here, in case the caller has a reason to
// not accept this buffer. This is used by SurfaceFlinger to
// reject buffers which have the wrong size
int buf = item.mBuf;
if (rejecter && rejecter->reject(mSlots[buf].mGraphicBuffer, item)) {
releaseBufferLocked(buf, EGL_NO_SYNC_KHR);
return NO_ERROR;
}
// Release the previous buffer.
err = releaseAndUpdateLocked(item);
if (err != NO_ERROR) {
return err;
}
if (!SyncFeatures::getInstance().useNativeFenceSync()) {
// Bind the new buffer to the GL texture.
//
// Older devices require the "implicit" synchronization provided
// by glEGLImageTargetTexture2DOES, which this method calls. Newer
// devices will either call this in Layer::onDraw, or (if it's not
// a GL-composited layer) not at all.
err = bindTextureImageLocked();
}
return err;
}
status_t GLConsumer::updateAndReleaseLocked(const BufferQueue::BufferItem& item)
{
status_t err = NO_ERROR;
if (!mAttached) {
ST_LOGE("updateAndRelease: GLConsumer is not attached to an OpenGL "
"ES context");
return INVALID_OPERATION;
}
// Confirm state.
err = checkAndUpdateEglStateLocked();
if (err != NO_ERROR) {
return err;
}
int buf = item.mBuf;
// If the mEglSlot entry is empty, create an EGLImage for the gralloc
// buffer currently in the slot in ConsumerBase.
//
// We may have to do this even when item.mGraphicBuffer == NULL (which
// means the buffer was previously acquired), if we destroyed the
// EGLImage when detaching from a context but the buffer has not been
// re-allocated.
if (mEglSlots[buf].mEglImage == EGL_NO_IMAGE_KHR) {
EGLImageKHR image = createImage(mEglDisplay,
mSlots[buf].mGraphicBuffer, item.mCrop);
if (image == EGL_NO_IMAGE_KHR) {
ST_LOGW("updateAndRelease: unable to createImage on display=%p slot=%d",
mEglDisplay, buf);
return UNKNOWN_ERROR;
}
mEglSlots[buf].mEglImage = image;
mEglSlots[buf].mCropRect = item.mCrop;
}
// Do whatever sync ops we need to do before releasing the old slot.
err = syncForReleaseLocked(mEglDisplay);
if (err != NO_ERROR) {
// Release the buffer we just acquired. It's not safe to
// release the old buffer, so instead we just drop the new frame.
// As we are still under lock since acquireBuffer, it is safe to
// release by slot.
releaseBufferLocked(buf, mSlots[buf].mGraphicBuffer,
mEglDisplay, EGL_NO_SYNC_KHR);
return err;
}
ST_LOGV("updateAndRelease: (slot=%d buf=%p) -> (slot=%d buf=%p)",
mCurrentTexture,
mCurrentTextureBuf != NULL ? mCurrentTextureBuf->handle : 0,
buf, mSlots[buf].mGraphicBuffer->handle);
// release old buffer
if (mCurrentTexture != BufferQueue::INVALID_BUFFER_SLOT) {
status_t status = releaseBufferLocked(
mCurrentTexture, mCurrentTextureBuf, mEglDisplay,
mEglSlots[mCurrentTexture].mEglFence);
if (status < NO_ERROR) {
ST_LOGE("updateAndRelease: failed to release buffer: %s (%d)",
strerror(-status), status);
err = status;
// keep going, with error raised [?]
}
}
// Update the GLConsumer state.
mCurrentTexture = buf;
mCurrentTextureBuf = mSlots[buf].mGraphicBuffer;
mCurrentCrop = item.mCrop;
mCurrentTransform = item.mTransform;
mCurrentScalingMode = item.mScalingMode;
mCurrentTimestamp = item.mTimestamp;
mCurrentFence = item.mFence;
mCurrentFrameNumber = item.mFrameNumber;
computeCurrentTransformMatrixLocked();
return err;
}
status_t GLConsumer::releaseTexImage() {
ATRACE_CALL();
ST_LOGV("releaseTexImage");
Mutex::Autolock lock(mMutex);
if (mAbandoned) {
ST_LOGE("releaseTexImage: GLConsumer is abandoned!");
return NO_INIT;
}
// Make sure the EGL state is the same as in previous calls.
status_t err = NO_ERROR;
if (mAttached) {
err = checkAndUpdateEglStateLocked(true);
if (err != NO_ERROR) {
return err;
}
} else {
// if we're detached, no need to validate EGL's state -- we won't use it.
}
// Update the GLConsumer state.
int buf = mCurrentTexture;
if (buf != BufferQueue::INVALID_BUFFER_SLOT) {
ST_LOGV("releaseTexImage: (slot=%d, mAttached=%d)", buf, mAttached);
if (mAttached) {
// Do whatever sync ops we need to do before releasing the slot.
err = syncForReleaseLocked(mEglDisplay);
if (err != NO_ERROR) {
ST_LOGE("syncForReleaseLocked failed (slot=%d), err=%d", buf, err);
return err;
}
} else {
// if we're detached, we just use the fence that was created in detachFromContext()
// so... basically, nothing more to do here.
}
err = releaseBufferLocked(buf, mSlots[buf].mGraphicBuffer, mEglDisplay, EGL_NO_SYNC_KHR);
if (err < NO_ERROR) {
ST_LOGE("releaseTexImage: failed to release buffer: %s (%d)",
strerror(-err), err);
return err;
}
mCurrentTexture = BufferQueue::INVALID_BUFFER_SLOT;
mCurrentTextureBuf = getDebugTexImageBuffer();
mCurrentCrop.makeInvalid();
mCurrentTransform = 0;
mCurrentScalingMode = NATIVE_WINDOW_SCALING_MODE_FREEZE;
mCurrentTimestamp = 0;
mCurrentFence = Fence::NO_FENCE;
if (mAttached) {
// bind a dummy texture
glBindTexture(mTexTarget, mTexName);
bindUnslottedBufferLocked(mEglDisplay);
} else {
// detached, don't touch the texture (and we may not even have an
// EGLDisplay here.
}
}
return NO_ERROR;
}
status_t GLConsumer::updateAndReleaseLocked(const BufferItem& item)
{
status_t err = NO_ERROR;
int buf = item.mBuf;
if (!mAttached) {
GLC_LOGE("updateAndRelease: GLConsumer is not attached to an OpenGL "
"ES context");
releaseBufferLocked(buf, mSlots[buf].mGraphicBuffer,
mEglDisplay, EGL_NO_SYNC_KHR);
return INVALID_OPERATION;
}
// Confirm state.
err = checkAndUpdateEglStateLocked();
if (err != NO_ERROR) {
releaseBufferLocked(buf, mSlots[buf].mGraphicBuffer,
mEglDisplay, EGL_NO_SYNC_KHR);
return err;
}
// Ensure we have a valid EglImageKHR for the slot, creating an EglImage
// if nessessary, for the gralloc buffer currently in the slot in
// ConsumerBase.
// We may have to do this even when item.mGraphicBuffer == NULL (which
// means the buffer was previously acquired).
err = mEglSlots[buf].mEglImage->createIfNeeded(mEglDisplay, item.mCrop);
if (err != NO_ERROR) {
GLC_LOGW("updateAndRelease: unable to createImage on display=%p slot=%d",
mEglDisplay, buf);
releaseBufferLocked(buf, mSlots[buf].mGraphicBuffer,
mEglDisplay, EGL_NO_SYNC_KHR);
return UNKNOWN_ERROR;
}
// Do whatever sync ops we need to do before releasing the old slot.
err = syncForReleaseLocked(mEglDisplay);
if (err != NO_ERROR) {
// Release the buffer we just acquired. It's not safe to
// release the old buffer, so instead we just drop the new frame.
// As we are still under lock since acquireBuffer, it is safe to
// release by slot.
releaseBufferLocked(buf, mSlots[buf].mGraphicBuffer,
mEglDisplay, EGL_NO_SYNC_KHR);
return err;
}
GLC_LOGV("updateAndRelease: (slot=%d buf=%p) -> (slot=%d buf=%p)",
mCurrentTexture, mCurrentTextureImage != NULL ?
mCurrentTextureImage->graphicBufferHandle() : 0,
buf, mSlots[buf].mGraphicBuffer->handle);
// release old buffer
if (mCurrentTexture != BufferQueue::INVALID_BUFFER_SLOT) {
status_t status = releaseBufferLocked(
mCurrentTexture, mCurrentTextureImage->graphicBuffer(),
mEglDisplay, mEglSlots[mCurrentTexture].mEglFence);
if (status < NO_ERROR) {
GLC_LOGE("updateAndRelease: failed to release buffer: %s (%d)",
strerror(-status), status);
err = status;
// keep going, with error raised [?]
}
}
// Update the GLConsumer state.
mCurrentTexture = buf;
mCurrentTextureImage = mEglSlots[buf].mEglImage;
mCurrentCrop = item.mCrop;
mCurrentTransform = item.mTransform;
mCurrentScalingMode = item.mScalingMode;
mCurrentTimestamp = item.mTimestamp;
mCurrentFence = item.mFence;
mCurrentFrameNumber = item.mFrameNumber;
computeCurrentTransformMatrixLocked();
return err;
}