BufferQueue.cpp revision 8dc55396fc9bc425b5e2c82e76a38080f2a655ff 
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 android::BufferItem& item) {
36    sp<ConsumerListener> listener(mConsumerListener.promote());
37    if (listener != NULL) {
38        listener->onFrameAvailable(item);
39    }
40}
41
42void BufferQueue::ProxyConsumerListener::onBuffersReleased() {
43    sp<ConsumerListener> listener(mConsumerListener.promote());
44    if (listener != NULL) {
45        listener->onBuffersReleased();
46    }
47}
48
49void BufferQueue::ProxyConsumerListener::onSidebandStreamChanged() {
50    sp<ConsumerListener> listener(mConsumerListener.promote());
51    if (listener != NULL) {
52        listener->onSidebandStreamChanged();
53    }
54}
55
56void BufferQueue::createBufferQueue(sp<IGraphicBufferProducer>* outProducer,
57        sp<IGraphicBufferConsumer>* outConsumer,
58        const sp<IGraphicBufferAlloc>& allocator) {
59    LOG_ALWAYS_FATAL_IF(outProducer == NULL,
60            "BufferQueue: outProducer must not be NULL");
61    LOG_ALWAYS_FATAL_IF(outConsumer == NULL,
62            "BufferQueue: outConsumer must not be NULL");
63
64    sp<BufferQueueCore> core(new BufferQueueCore(allocator));
65    LOG_ALWAYS_FATAL_IF(core == NULL,
66            "BufferQueue: failed to create BufferQueueCore");
67
68    sp<IGraphicBufferProducer> producer(new BufferQueueProducer(core));
69    LOG_ALWAYS_FATAL_IF(producer == NULL,
70            "BufferQueue: failed to create BufferQueueProducer");
71
72    sp<IGraphicBufferConsumer> consumer(new BufferQueueConsumer(core));
73    LOG_ALWAYS_FATAL_IF(consumer == NULL,
74            "BufferQueue: failed to create BufferQueueConsumer");
75
76    *outProducer = producer;
77    *outConsumer = consumer;
78}
79
80}; // namespace android
81