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