BufferItemConsumer.cpp revision e232fdca2a62dc5e81b550f5be8710e36174e7a6 
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_NDEBUG 0
18#define LOG_TAG "BufferItemConsumer"
19#define ATRACE_TAG ATRACE_TAG_GRAPHICS
20#include <utils/Log.h>
21
22#include <gui/BufferItemConsumer.h>
23
24#define BI_LOGV(x, ...) ALOGV("[%s] "x, mName.string(), ##__VA_ARGS__)
25#define BI_LOGD(x, ...) ALOGD("[%s] "x, mName.string(), ##__VA_ARGS__)
26#define BI_LOGI(x, ...) ALOGI("[%s] "x, mName.string(), ##__VA_ARGS__)
27#define BI_LOGW(x, ...) ALOGW("[%s] "x, mName.string(), ##__VA_ARGS__)
28#define BI_LOGE(x, ...) ALOGE("[%s] "x, mName.string(), ##__VA_ARGS__)
29
30namespace android {
31
32BufferItemConsumer::BufferItemConsumer(uint32_t consumerUsage,
33        int bufferCount, bool synchronousMode) :
34    ConsumerBase(new BufferQueue(true, bufferCount) )
35{
36    mBufferQueue->setConsumerUsageBits(consumerUsage);
37    mBufferQueue->setSynchronousMode(synchronousMode);
38}
39
40BufferItemConsumer::~BufferItemConsumer() {
41}
42
43void BufferItemConsumer::setName(const String8& name) {
44    Mutex::Autolock _l(mMutex);
45    mName = name;
46    mBufferQueue->setConsumerName(name);
47}
48
49status_t BufferItemConsumer::acquireBuffer(BufferItem *item, bool waitForFence) {
50    status_t err;
51
52    if (!item) return BAD_VALUE;
53
54    Mutex::Autolock _l(mMutex);
55
56    err = acquireBufferLocked(item);
57    if (err != OK) {
58        if (err != NO_BUFFER_AVAILABLE) {
59            BI_LOGE("Error acquiring buffer: %s (%d)", strerror(err), err);
60        }
61        return err;
62    }
63
64    if (waitForFence && item->mFence.get()) {
65        err = item->mFence->wait(Fence::TIMEOUT_NEVER);
66        if (err != OK) {
67            BI_LOGE("Failed to wait for fence of acquired buffer: %s (%d)",
68                    strerror(-err), err);
69            return err;
70        }
71    }
72
73    item->mGraphicBuffer = mSlots[item->mBuf].mGraphicBuffer;
74
75    return OK;
76}
77
78status_t BufferItemConsumer::releaseBuffer(const BufferItem &item,
79        const sp<Fence>& releaseFence) {
80    status_t err;
81
82    Mutex::Autolock _l(mMutex);
83
84    err = releaseBufferLocked(item.mBuf, EGL_NO_DISPLAY,
85            EGL_NO_SYNC_KHR, releaseFence);
86    if (err != OK) {
87        BI_LOGE("Failed to release buffer: %s (%d)",
88                strerror(-err), err);
89    }
90    return err;
91}
92
93} // namespace android
94