9ccb3975c7
* Use the vsync uevents from the kernel to start
surfaceflinger composition.
* This patch also does some code cleanup
- Move copybit specific functions to copybit files.
- Cleanup verbose logging.
Change-Id: I8ca3cd7a7ceb53655ed0fcf39ac2cb35e6cbe890
118 lines
3.5 KiB
C++
118 lines
3.5 KiB
C++
/*
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* Copyright (C) 2010 The Android Open Source Project
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* Copyright (C) 2012, Code Aurora Forum. All rights reserved.
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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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#include <gralloc_priv.h>
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#include <genlock.h>
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// -----------------------------------------------------------------------------
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// QueuedBufferStore
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//This class holds currently and previously queued buffers.
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//Provides utilities to store, lock, remove, unlock.
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namespace qhwc{
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static const int MAX_QUEUED_BUFS = 4;
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class QueuedBufferStore {
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public:
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QueuedBufferStore() {
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clearCurrent();
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clearPrevious();
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}
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~QueuedBufferStore() {}
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void lockAndAdd(private_handle_t*);
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void unlockAllPrevious();
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private:
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QueuedBufferStore& operator=(const QueuedBufferStore&);
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QueuedBufferStore(const QueuedBufferStore&);
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bool lockBuffer(private_handle_t *hnd);
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void unlockBuffer(private_handle_t *hnd);
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void clearCurrent();
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void clearPrevious();
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void mvCurrToPrev();
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//members
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private_handle_t *current[MAX_QUEUED_BUFS]; //holds buf being queued
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private_handle_t *previous[MAX_QUEUED_BUFS]; //holds bufs queued in prev round
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int curCount;
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int prevCount;
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};
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//Store and lock current drawing round buffers
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inline void QueuedBufferStore::lockAndAdd(private_handle_t *hnd) {
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if(lockBuffer(hnd))
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current[curCount++] = hnd;
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}
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//Unlock all previous drawing round buffers
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inline void QueuedBufferStore::unlockAllPrevious() {
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//Unlock
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for(int i = 0; i < prevCount; i++) {
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unlockBuffer(previous[i]);
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previous[i] = NULL;
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}
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//Move current hnd to previous
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mvCurrToPrev();
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//Clear current
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clearCurrent();
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}
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//Clear currentbuf store
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inline void QueuedBufferStore::clearCurrent() {
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for(int i = 0; i < MAX_QUEUED_BUFS; i++)
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current[i] = NULL;
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curCount = 0;
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}
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//Clear previousbuf store
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inline void QueuedBufferStore::clearPrevious() {
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for(int i = 0; i < MAX_QUEUED_BUFS; i++)
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previous[i] = NULL;
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prevCount = 0;
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}
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//Copy from current to previous
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inline void QueuedBufferStore::mvCurrToPrev() {
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for(int i = 0; i < curCount; i++)
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previous[i] = current[i];
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prevCount = curCount;
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}
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inline bool QueuedBufferStore::lockBuffer(private_handle_t *hnd) {
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if (GENLOCK_FAILURE == genlock_lock_buffer(hnd, GENLOCK_READ_LOCK,
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GENLOCK_MAX_TIMEOUT)) {
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ALOGE("%s: genlock_lock_buffer(READ) failed", __func__);
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return false;
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}
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return true;
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}
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inline void QueuedBufferStore::unlockBuffer(private_handle_t *hnd) {
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//Check if buffer is still around
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if(private_handle_t::validate(hnd) != 0) {
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ALOGE("%s Invalid Handle", __func__);
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return;
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}
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//Actually try to unlock
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if (GENLOCK_FAILURE == genlock_unlock_buffer(hnd)) {
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ALOGE("%s: genlock_unlock_buffer failed", __func__);
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return;
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}
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}
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// -----------------------------------------------------------------------------
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};//namespace
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