BufferQueue.cpp revision e0d5862ad85f7bf4feb1eee9444bf3a5b49c5842 
1/*
2 * Copyright (C) 2012 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#define LOG_TAG "BufferQueue"
18#define ATRACE_TAG ATRACE_TAG_GRAPHICS
19//#define LOG_NDEBUG 0
20
21#include <gui/BufferQueue.h>
22#include <gui/BufferQueueConsumer.h>
23#include <gui/BufferQueueCore.h>
24#include <gui/BufferQueueProducer.h>
25
26namespace android {
27
28BufferQueue::ProxyConsumerListener::ProxyConsumerListener(
29        const wp<ConsumerListener>& consumerListener):
30        mConsumerListener(consumerListener) {}
31
32BufferQueue::ProxyConsumerListener::~ProxyConsumerListener() {}
33
34void BufferQueue::ProxyConsumerListener::onFrameAvailable() {
35    sp<ConsumerListener> listener(mConsumerListener.promote());
36    if (listener != NULL) {
37        listener->onFrameAvailable();
38    }
39}
40
41void BufferQueue::ProxyConsumerListener::onBuffersReleased() {
42    sp<ConsumerListener> listener(mConsumerListener.promote());
43    if (listener != NULL) {
44        listener->onBuffersReleased();
45    }
46}
47
48void BufferQueue::ProxyConsumerListener::onSidebandStreamChanged() {
49    sp<ConsumerListener> listener(mConsumerListener.promote());
50    if (listener != NULL) {
51        listener->onSidebandStreamChanged();
52    }
53}
54
55void BufferQueue::createBufferQueue(sp<IGraphicBufferProducer>* outProducer,
56        sp<IGraphicBufferConsumer>* outConsumer,
57        const sp<IGraphicBufferAlloc>& allocator) {
58    LOG_ALWAYS_FATAL_IF(outProducer == NULL,
59            "BufferQueue: outProducer must not be NULL");
60    LOG_ALWAYS_FATAL_IF(outConsumer == NULL,
61            "BufferQueue: outConsumer must not be NULL");
62
63    sp<BufferQueueCore> core(new BufferQueueCore(allocator));
64    LOG_ALWAYS_FATAL_IF(core == NULL,
65            "BufferQueue: failed to create BufferQueueCore");
66
67    sp<IGraphicBufferProducer> producer(new BufferQueueProducer(core));
68    LOG_ALWAYS_FATAL_IF(producer == NULL,
69            "BufferQueue: failed to create BufferQueueProducer");
70
71    sp<IGraphicBufferConsumer> consumer(new BufferQueueConsumer(core));
72    LOG_ALWAYS_FATAL_IF(consumer == NULL,
73            "BufferQueue: failed to create BufferQueueConsumer");
74
75    *outProducer = producer;
76    *outConsumer = consumer;
77}
78
79}; // namespace android
80