BufferQueue.cpp revision acd56150573d3a6d449c0de01f93c6f269d121e3 
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        const BufferItem& item) {
36    sp<ConsumerListener> listener(mConsumerListener.promote());
37    if (listener != NULL) {
38        listener->onFrameAvailable(item);
39    }
40}
41
42void BufferQueue::ProxyConsumerListener::onFrameReplaced(
43        const BufferItem& item) {
44    sp<ConsumerListener> listener(mConsumerListener.promote());
45    if (listener != NULL) {
46        listener->onFrameReplaced(item);
47    }
48}
49
50void BufferQueue::ProxyConsumerListener::onBuffersReleased() {
51    sp<ConsumerListener> listener(mConsumerListener.promote());
52    if (listener != NULL) {
53        listener->onBuffersReleased();
54    }
55}
56
57void BufferQueue::ProxyConsumerListener::onSidebandStreamChanged() {
58    sp<ConsumerListener> listener(mConsumerListener.promote());
59    if (listener != NULL) {
60        listener->onSidebandStreamChanged();
61    }
62}
63
64void BufferQueue::createBufferQueue(sp<IGraphicBufferProducer>* outProducer,
65        sp<IGraphicBufferConsumer>* outConsumer) {
66    LOG_ALWAYS_FATAL_IF(outProducer == NULL,
67            "BufferQueue: outProducer must not be NULL");
68    LOG_ALWAYS_FATAL_IF(outConsumer == NULL,
69            "BufferQueue: outConsumer must not be NULL");
70
71    sp<BufferQueueCore> core(new BufferQueueCore());
72    LOG_ALWAYS_FATAL_IF(core == NULL,
73            "BufferQueue: failed to create BufferQueueCore");
74
75    sp<IGraphicBufferProducer> producer(new BufferQueueProducer(core));
76    LOG_ALWAYS_FATAL_IF(producer == NULL,
77            "BufferQueue: failed to create BufferQueueProducer");
78
79    sp<IGraphicBufferConsumer> consumer(new BufferQueueConsumer(core));
80    LOG_ALWAYS_FATAL_IF(consumer == NULL,
81            "BufferQueue: failed to create BufferQueueConsumer");
82
83    *outProducer = producer;
84    *outConsumer = consumer;
85}
86
87}; // namespace android
88