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(const android::BufferItem & item)34 void 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
onBuffersReleased()42 void BufferQueue::ProxyConsumerListener::onBuffersReleased() {
43 sp<ConsumerListener> listener(mConsumerListener.promote());
44 if (listener != NULL) {
45 listener->onBuffersReleased();
46 }
47 }
48
onSidebandStreamChanged()49 void BufferQueue::ProxyConsumerListener::onSidebandStreamChanged() {
50 sp<ConsumerListener> listener(mConsumerListener.promote());
51 if (listener != NULL) {
52 listener->onSidebandStreamChanged();
53 }
54 }
55
createBufferQueue(sp<IGraphicBufferProducer> * outProducer,sp<IGraphicBufferConsumer> * outConsumer,const sp<IGraphicBufferAlloc> & allocator)56 void 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