98d3d6ec12
Allow releasing a buffer acquired in the past. Change-Id: I3f27f1caec109c1a47286fc4d2235c6e1afe9022 Signed-off-by: Lajos Molnar <lajos@google.com> Bug: 9516405
105 lines
3.1 KiB
C++
105 lines
3.1 KiB
C++
/*
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* Copyright (C) 2012 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#define ATRACE_TAG ATRACE_TAG_GRAPHICS
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//#define LOG_NDEBUG 0
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#include "SurfaceFlingerConsumer.h"
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#include <private/gui/SyncFeatures.h>
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#include <utils/Trace.h>
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#include <utils/Errors.h>
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namespace android {
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// ---------------------------------------------------------------------------
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status_t SurfaceFlingerConsumer::updateTexImage(BufferRejecter* rejecter)
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{
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ATRACE_CALL();
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ALOGV("updateTexImage");
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Mutex::Autolock lock(mMutex);
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if (mAbandoned) {
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ALOGE("updateTexImage: GLConsumer is abandoned!");
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return NO_INIT;
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}
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// Make sure the EGL state is the same as in previous calls.
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status_t err = checkAndUpdateEglStateLocked();
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if (err != NO_ERROR) {
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return err;
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}
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BufferQueue::BufferItem item;
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// Acquire the next buffer.
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// In asynchronous mode the list is guaranteed to be one buffer
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// deep, while in synchronous mode we use the oldest buffer.
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err = acquireBufferLocked(&item);
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if (err != NO_ERROR) {
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if (err == BufferQueue::NO_BUFFER_AVAILABLE) {
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// This variant of updateTexImage does not guarantee that the
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// texture is bound, so no need to call glBindTexture.
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err = NO_ERROR;
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} else {
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ALOGE("updateTexImage: acquire failed: %s (%d)",
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strerror(-err), err);
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}
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return err;
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}
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// We call the rejecter here, in case the caller has a reason to
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// not accept this buffer. This is used by SurfaceFlinger to
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// reject buffers which have the wrong size
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int buf = item.mBuf;
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if (rejecter && rejecter->reject(mSlots[buf].mGraphicBuffer, item)) {
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releaseBufferLocked(buf, mSlots[buf].mGraphicBuffer, EGL_NO_SYNC_KHR);
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return NO_ERROR;
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}
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// Release the previous buffer.
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err = releaseAndUpdateLocked(item);
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if (err != NO_ERROR) {
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return err;
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}
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if (!SyncFeatures::getInstance().useNativeFenceSync()) {
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// Bind the new buffer to the GL texture.
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//
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// Older devices require the "implicit" synchronization provided
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// by glEGLImageTargetTexture2DOES, which this method calls. Newer
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// devices will either call this in Layer::onDraw, or (if it's not
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// a GL-composited layer) not at all.
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err = bindTextureImageLocked();
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}
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return err;
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}
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status_t SurfaceFlingerConsumer::bindTextureImage()
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{
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Mutex::Autolock lock(mMutex);
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return bindTextureImageLocked();
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}
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// ---------------------------------------------------------------------------
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}; // namespace android
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