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/*
* Copyright (C) 2012 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 ATRACE_TAG ATRACE_TAG_GRAPHICS
//#define LOG_NDEBUG 0
#include "SurfaceFlingerConsumer.h"
#include <private/gui/SyncFeatures.h>
#include <utils/Trace.h>
#include <utils/Errors.h>
namespace android {
// ---------------------------------------------------------------------------
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, item.mGraphicBuffer, 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 SurfaceFlingerConsumer::bindTextureImage()
{
Mutex::Autolock lock(mMutex);
return bindTextureImageLocked();
}
// ---------------------------------------------------------------------------
}; // namespace android
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