1/*
2 * Copyright (C) 2013 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 ATRACE_TAG ATRACE_TAG_RS
18
19#include "rsContext.h"
20#include "rsAllocation.h"
21#include "rsAdapter.h"
22#include "rs_hal.h"
23
24#include <cutils/compiler.h>
25#include <utils/Log.h>
26#include "rsGrallocConsumer.h"
27#include <ui/GraphicBuffer.h>
28
29
30namespace android {
31namespace renderscript {
32
33GrallocConsumer::GrallocConsumer(Allocation *a, const sp<IGraphicBufferConsumer>& bq, int flags) :
34    ConsumerBase(bq, true)
35{
36    mAlloc = a;
37    if (flags == 0) {
38        flags = GRALLOC_USAGE_SW_READ_OFTEN | GRALLOC_USAGE_RENDERSCRIPT;
39    } else {
40        flags |= GRALLOC_USAGE_RENDERSCRIPT;
41    }
42    mConsumer->setConsumerUsageBits(flags);
43    mConsumer->setMaxAcquiredBufferCount(2);
44
45    uint32_t y = a->mHal.drvState.lod[0].dimY;
46    if (y < 1) y = 1;
47    mConsumer->setDefaultBufferSize(a->mHal.drvState.lod[0].dimX, y);
48
49    if (a->mHal.state.yuv) {
50        bq->setDefaultBufferFormat(a->mHal.state.yuv);
51    }
52    //mBufferQueue->setConsumerName(name);
53}
54
55GrallocConsumer::~GrallocConsumer() {
56    // ConsumerBase destructor does all the work.
57}
58
59
60
61status_t GrallocConsumer::lockNextBuffer() {
62    Mutex::Autolock _l(mMutex);
63    status_t err;
64
65    if (mAcquiredBuffer.mSlot != BufferQueue::INVALID_BUFFER_SLOT) {
66        err = releaseAcquiredBufferLocked();
67        if (err) {
68            return err;
69        }
70    }
71
72    BufferQueue::BufferItem b;
73
74    err = acquireBufferLocked(&b, 0);
75    if (err != OK) {
76        if (err == BufferQueue::NO_BUFFER_AVAILABLE) {
77            return BAD_VALUE;
78        } else {
79            ALOGE("Error acquiring buffer: %s (%d)", strerror(err), err);
80            return err;
81        }
82    }
83
84    int buf = b.mBuf;
85
86    if (b.mFence.get()) {
87        err = b.mFence->waitForever("GrallocConsumer::lockNextBuffer");
88        if (err != OK) {
89            ALOGE("Failed to wait for fence of acquired buffer: %s (%d)",
90                    strerror(-err), err);
91            return err;
92        }
93    }
94
95    void *bufferPointer = NULL;
96    android_ycbcr ycbcr = android_ycbcr();
97
98    if (mSlots[buf].mGraphicBuffer->getPixelFormat() ==
99            HAL_PIXEL_FORMAT_YCbCr_420_888) {
100        err = mSlots[buf].mGraphicBuffer->lockYCbCr(
101            GraphicBuffer::USAGE_SW_READ_OFTEN,
102            b.mCrop,
103            &ycbcr);
104
105        if (err != OK) {
106            ALOGE("Unable to lock YCbCr buffer for CPU reading: %s (%d)",
107                    strerror(-err), err);
108            return err;
109        }
110        bufferPointer = ycbcr.y;
111    } else {
112        err = mSlots[buf].mGraphicBuffer->lock(
113            GraphicBuffer::USAGE_SW_READ_OFTEN,
114            b.mCrop,
115            &bufferPointer);
116
117        if (err != OK) {
118            ALOGE("Unable to lock buffer for CPU reading: %s (%d)",
119                    strerror(-err), err);
120            return err;
121        }
122    }
123
124    size_t lockedIdx = 0;
125    assert(mAcquiredBuffer.mSlot == BufferQueue::INVALID_BUFFER_SLOT);
126
127    mAcquiredBuffer.mSlot = buf;
128    mAcquiredBuffer.mBufferPointer = bufferPointer;
129    mAcquiredBuffer.mGraphicBuffer = mSlots[buf].mGraphicBuffer;
130
131    mAlloc->mHal.drvState.lod[0].mallocPtr = reinterpret_cast<uint8_t*>(bufferPointer);
132    mAlloc->mHal.drvState.lod[0].stride = mSlots[buf].mGraphicBuffer->getStride() *
133            mAlloc->mHal.state.type->getElementSizeBytes();
134    mAlloc->mHal.state.nativeBuffer = mAcquiredBuffer.mGraphicBuffer->getNativeBuffer();
135    mAlloc->mHal.state.timestamp = b.mTimestamp;
136
137    assert(mAlloc->mHal.drvState.lod[0].dimX ==
138           mSlots[buf].mGraphicBuffer->getWidth());
139    assert(mAlloc->mHal.drvState.lod[0].dimY ==
140           mSlots[buf].mGraphicBuffer->getHeight());
141
142    //mAlloc->format = mSlots[buf].mGraphicBuffer->getPixelFormat();
143
144    //mAlloc->crop        = b.mCrop;
145    //mAlloc->transform   = b.mTransform;
146    //mAlloc->scalingMode = b.mScalingMode;
147    //mAlloc->frameNumber = b.mFrameNumber;
148
149    if (mAlloc->mHal.state.yuv) {
150        mAlloc->mHal.drvState.lod[1].mallocPtr = ycbcr.cb;
151        mAlloc->mHal.drvState.lod[2].mallocPtr = ycbcr.cr;
152
153        mAlloc->mHal.drvState.lod[0].stride = ycbcr.ystride;
154        mAlloc->mHal.drvState.lod[1].stride = ycbcr.cstride;
155        mAlloc->mHal.drvState.lod[2].stride = ycbcr.cstride;
156
157        mAlloc->mHal.drvState.yuv.shift = 1;
158        mAlloc->mHal.drvState.yuv.step = ycbcr.chroma_step;
159    }
160
161    return OK;
162}
163
164status_t GrallocConsumer::unlockBuffer() {
165    Mutex::Autolock _l(mMutex);
166    return releaseAcquiredBufferLocked();
167}
168
169status_t GrallocConsumer::releaseAcquiredBufferLocked() {
170    status_t err;
171
172    err = mAcquiredBuffer.mGraphicBuffer->unlock();
173    if (err != OK) {
174        ALOGE("%s: Unable to unlock graphic buffer", __FUNCTION__);
175        return err;
176    }
177    int buf = mAcquiredBuffer.mSlot;
178
179    // release the buffer if it hasn't already been freed by the BufferQueue.
180    // This can happen, for example, when the producer of this buffer
181    // disconnected after this buffer was acquired.
182    if (CC_LIKELY(mAcquiredBuffer.mGraphicBuffer ==
183            mSlots[buf].mGraphicBuffer)) {
184        releaseBufferLocked(
185                buf, mAcquiredBuffer.mGraphicBuffer,
186                EGL_NO_DISPLAY, EGL_NO_SYNC_KHR);
187    }
188
189    mAcquiredBuffer.mSlot = BufferQueue::INVALID_BUFFER_SLOT;
190    mAcquiredBuffer.mBufferPointer = NULL;
191    mAcquiredBuffer.mGraphicBuffer.clear();
192    return OK;
193}
194
195} // namespace renderscript
196} // namespace android
197
198