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
26 namespace android {
27
ProxyConsumerListener(const wp<ConsumerListener> & consumerListener)28 BufferQueue::ProxyConsumerListener::ProxyConsumerListener(
29 const wp<ConsumerListener>& consumerListener):
30 mConsumerListener(consumerListener) {}
31
~ProxyConsumerListener()32 BufferQueue::ProxyConsumerListener::~ProxyConsumerListener() {}
33
onFrameAvailable()34 void BufferQueue::ProxyConsumerListener::onFrameAvailable() {
35 sp<ConsumerListener> listener(mConsumerListener.promote());
36 if (listener != NULL) {
37 listener->onFrameAvailable();
38 }
39 }
40
onBuffersReleased()41 void BufferQueue::ProxyConsumerListener::onBuffersReleased() {
42 sp<ConsumerListener> listener(mConsumerListener.promote());
43 if (listener != NULL) {
44 listener->onBuffersReleased();
45 }
46 }
47
onSidebandStreamChanged()48 void BufferQueue::ProxyConsumerListener::onSidebandStreamChanged() {
49 sp<ConsumerListener> listener(mConsumerListener.promote());
50 if (listener != NULL) {
51 listener->onSidebandStreamChanged();
52 }
53 }
54
createBufferQueue(sp<IGraphicBufferProducer> * outProducer,sp<IGraphicBufferConsumer> * outConsumer,const sp<IGraphicBufferAlloc> & allocator)55 void 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