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 <inttypes.h>
23
24 #include <gui/BufferItem.h>
25 #include <gui/BufferItemConsumer.h>
26
27 #define BI_LOGV(x, ...) ALOGV("[%s] " x, mName.string(), ##__VA_ARGS__)
28 //#define BI_LOGD(x, ...) ALOGD("[%s] " x, mName.string(), ##__VA_ARGS__)
29 //#define BI_LOGI(x, ...) ALOGI("[%s] " x, mName.string(), ##__VA_ARGS__)
30 //#define BI_LOGW(x, ...) ALOGW("[%s] " x, mName.string(), ##__VA_ARGS__)
31 #define BI_LOGE(x, ...) ALOGE("[%s] " x, mName.string(), ##__VA_ARGS__)
32
33 namespace android {
34
BufferItemConsumer(const sp<IGraphicBufferConsumer> & consumer,uint64_t consumerUsage,int bufferCount,bool controlledByApp)35 BufferItemConsumer::BufferItemConsumer(
36 const sp<IGraphicBufferConsumer>& consumer, uint64_t consumerUsage,
37 int bufferCount, bool controlledByApp) :
38 ConsumerBase(consumer, controlledByApp)
39 {
40 status_t err = mConsumer->setConsumerUsageBits(consumerUsage);
41 LOG_ALWAYS_FATAL_IF(err != OK,
42 "Failed to set consumer usage bits to %#" PRIx64, consumerUsage);
43 if (bufferCount != DEFAULT_MAX_BUFFERS) {
44 err = mConsumer->setMaxAcquiredBufferCount(bufferCount);
45 LOG_ALWAYS_FATAL_IF(err != OK,
46 "Failed to set max acquired buffer count to %d", bufferCount);
47 }
48 }
49
~BufferItemConsumer()50 BufferItemConsumer::~BufferItemConsumer() {}
51
setBufferFreedListener(const wp<BufferFreedListener> & listener)52 void BufferItemConsumer::setBufferFreedListener(
53 const wp<BufferFreedListener>& listener) {
54 Mutex::Autolock _l(mMutex);
55 mBufferFreedListener = listener;
56 }
57
acquireBuffer(BufferItem * item,nsecs_t presentWhen,bool waitForFence)58 status_t BufferItemConsumer::acquireBuffer(BufferItem *item,
59 nsecs_t presentWhen, bool waitForFence) {
60 status_t err;
61
62 if (!item) return BAD_VALUE;
63
64 Mutex::Autolock _l(mMutex);
65
66 err = acquireBufferLocked(item, presentWhen);
67 if (err != OK) {
68 if (err != NO_BUFFER_AVAILABLE) {
69 BI_LOGE("Error acquiring buffer: %s (%d)", strerror(err), err);
70 }
71 return err;
72 }
73
74 if (waitForFence) {
75 err = item->mFence->waitForever("BufferItemConsumer::acquireBuffer");
76 if (err != OK) {
77 BI_LOGE("Failed to wait for fence of acquired buffer: %s (%d)",
78 strerror(-err), err);
79 return err;
80 }
81 }
82
83 item->mGraphicBuffer = mSlots[item->mSlot].mGraphicBuffer;
84
85 return OK;
86 }
87
releaseBuffer(const BufferItem & item,const sp<Fence> & releaseFence)88 status_t BufferItemConsumer::releaseBuffer(const BufferItem &item,
89 const sp<Fence>& releaseFence) {
90 status_t err;
91
92 Mutex::Autolock _l(mMutex);
93
94 err = addReleaseFenceLocked(item.mSlot, item.mGraphicBuffer, releaseFence);
95 if (err != OK) {
96 BI_LOGE("Failed to addReleaseFenceLocked");
97 }
98
99 err = releaseBufferLocked(item.mSlot, item.mGraphicBuffer, EGL_NO_DISPLAY,
100 EGL_NO_SYNC_KHR);
101 if (err != OK && err != IGraphicBufferConsumer::STALE_BUFFER_SLOT) {
102 BI_LOGE("Failed to release buffer: %s (%d)",
103 strerror(-err), err);
104 }
105 return err;
106 }
107
freeBufferLocked(int slotIndex)108 void BufferItemConsumer::freeBufferLocked(int slotIndex) {
109 sp<BufferFreedListener> listener = mBufferFreedListener.promote();
110 if (listener != nullptr && mSlots[slotIndex].mGraphicBuffer != nullptr) {
111 // Fire callback if we have a listener registered and the buffer being freed is valid.
112 BI_LOGV("actually calling onBufferFreed");
113 listener->onBufferFreed(mSlots[slotIndex].mGraphicBuffer);
114 }
115 ConsumerBase::freeBufferLocked(slotIndex);
116 }
117
118 } // namespace android
119