rsGrallocConsumer.cpp revision b4cb5ff44c3324bc9f7295fc2fd0e6a0ab496b0f 
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 "rs_hal.h"
22
23#include <cutils/compiler.h>
24#include <utils/Log.h>
25#include "rsGrallocConsumer.h"
26#include <gui/BufferItem.h>
27#include <ui/GraphicBuffer.h>
28
29
30namespace android {
31namespace renderscript {
32
33GrallocConsumer::GrallocConsumer(Allocation *a, const sp<IGraphicBufferConsumer>& bq, int flags, uint32_t numAlloc) :
34    ConsumerBase(bq, true)
35{
36    mAlloc = new Allocation *[numAlloc];
37    mAcquiredBuffer = new AcquiredBuffer[numAlloc];
38    isIdxUsed = new bool[numAlloc];
39
40    mAlloc[0] = a;
41    isIdxUsed[0] = true;
42    mNumAlloc = numAlloc;
43    if (flags == 0) {
44        flags = GRALLOC_USAGE_SW_READ_OFTEN | GRALLOC_USAGE_RENDERSCRIPT;
45    } else {
46        flags |= GRALLOC_USAGE_RENDERSCRIPT;
47    }
48    mConsumer->setConsumerUsageBits(flags);
49    mConsumer->setMaxAcquiredBufferCount(numAlloc + 1);
50
51    uint32_t y = a->mHal.drvState.lod[0].dimY;
52    if (y < 1) y = 1;
53    mConsumer->setDefaultBufferSize(a->mHal.drvState.lod[0].dimX, y);
54
55    if (a->mHal.state.yuv) {
56        bq->setDefaultBufferFormat(a->mHal.state.yuv);
57    }
58    for (uint32_t i = 1; i < numAlloc; i++) {
59        isIdxUsed[i] = false;
60    }
61    //mBufferQueue->setConsumerName(name);
62}
63
64GrallocConsumer::~GrallocConsumer() {
65    delete[] mAlloc;
66    delete[] mAcquiredBuffer;
67    delete[] isIdxUsed;
68}
69
70
71
72status_t GrallocConsumer::lockNextBuffer(uint32_t idx) {
73    Mutex::Autolock _l(mMutex);
74    status_t err;
75
76    if (idx >= mNumAlloc) {
77        ALOGE("Invalid buffer index: %d", idx);
78        return BAD_VALUE;
79    }
80
81    if (mAcquiredBuffer[idx].mSlot != BufferQueue::INVALID_BUFFER_SLOT) {
82        err = releaseAcquiredBufferLocked(idx);
83        if (err) {
84            return err;
85        }
86    }
87
88    BufferItem b;
89
90    err = acquireBufferLocked(&b, 0);
91    if (err != OK) {
92        if (err == BufferQueue::NO_BUFFER_AVAILABLE) {
93            return BAD_VALUE;
94        } else {
95            ALOGE("Error acquiring buffer: %s (%d)", strerror(err), err);
96            return err;
97        }
98    }
99
100    int slot = b.mSlot;
101
102    if (b.mFence.get()) {
103        err = b.mFence->waitForever("GrallocConsumer::lockNextBuffer");
104        if (err != OK) {
105            ALOGE("Failed to wait for fence of acquired buffer: %s (%d)",
106                    strerror(-err), err);
107            return err;
108        }
109    }
110
111    void *bufferPointer = nullptr;
112    android_ycbcr ycbcr = android_ycbcr();
113
114    if (mSlots[slot].mGraphicBuffer->getPixelFormat() ==
115            HAL_PIXEL_FORMAT_YCbCr_420_888) {
116        err = mSlots[slot].mGraphicBuffer->lockYCbCr(
117            GraphicBuffer::USAGE_SW_READ_OFTEN,
118            b.mCrop,
119            &ycbcr);
120
121        if (err != OK) {
122            ALOGE("Unable to lock YCbCr buffer for CPU reading: %s (%d)",
123                    strerror(-err), err);
124            return err;
125        }
126        bufferPointer = ycbcr.y;
127    } else {
128        err = mSlots[slot].mGraphicBuffer->lock(
129            GraphicBuffer::USAGE_SW_READ_OFTEN,
130            b.mCrop,
131            &bufferPointer);
132
133        if (err != OK) {
134            ALOGE("Unable to lock buffer for CPU reading: %s (%d)",
135                    strerror(-err), err);
136            return err;
137        }
138    }
139
140    size_t lockedIdx = 0;
141    rsAssert(mAcquiredBuffer[idx].mSlot == BufferQueue::INVALID_BUFFER_SLOT);
142
143    mAcquiredBuffer[idx].mSlot = slot;
144    mAcquiredBuffer[idx].mBufferPointer = bufferPointer;
145    mAcquiredBuffer[idx].mGraphicBuffer = mSlots[slot].mGraphicBuffer;
146
147    mAlloc[idx]->mHal.drvState.lod[0].mallocPtr = reinterpret_cast<uint8_t*>(bufferPointer);
148    mAlloc[idx]->mHal.drvState.lod[0].stride = mSlots[slot].mGraphicBuffer->getStride() *
149            mAlloc[idx]->mHal.state.type->getElementSizeBytes();
150    mAlloc[idx]->mHal.state.nativeBuffer = mAcquiredBuffer[idx].mGraphicBuffer->getNativeBuffer();
151    mAlloc[idx]->mHal.state.timestamp = b.mTimestamp;
152
153    rsAssert(mAlloc[idx]->mHal.drvState.lod[0].dimX ==
154             mSlots[slot].mGraphicBuffer->getWidth());
155    rsAssert(mAlloc[idx]->mHal.drvState.lod[0].dimY ==
156             mSlots[slot].mGraphicBuffer->getHeight());
157
158    //mAlloc->format = mSlots[buf].mGraphicBuffer->getPixelFormat();
159
160    //mAlloc->crop        = b.mCrop;
161    //mAlloc->transform   = b.mTransform;
162    //mAlloc->scalingMode = b.mScalingMode;
163    //mAlloc->frameNumber = b.mFrameNumber;
164
165    // For YUV Allocations, we need to populate the drvState with details of how
166    // the data is layed out.
167    // RenderScript requests a buffer in the YCbCr_420_888 format.
168    // The Camera HAL can return a buffer of YCbCr_420_888 or YV12, regardless
169    // of the requested format.
170    // mHal.state.yuv contains the requested format,
171    // mGraphicBuffer->getPixelFormat() is the returned format.
172    if (mAlloc[idx]->mHal.state.yuv == HAL_PIXEL_FORMAT_YCbCr_420_888) {
173        const int yWidth = mAlloc[idx]->mHal.drvState.lod[0].dimX;
174        const int yHeight = mAlloc[idx]->mHal.drvState.lod[0].dimY;
175
176        if (mSlots[slot].mGraphicBuffer->getPixelFormat() ==
177                HAL_PIXEL_FORMAT_YCbCr_420_888) {
178            const int cWidth = yWidth / 2;
179            const int cHeight = yHeight / 2;
180
181            mAlloc[idx]->mHal.drvState.lod[1].dimX = cWidth;
182            mAlloc[idx]->mHal.drvState.lod[1].dimY = cHeight;
183            mAlloc[idx]->mHal.drvState.lod[2].dimX = cWidth;
184            mAlloc[idx]->mHal.drvState.lod[2].dimY = cHeight;
185
186            mAlloc[idx]->mHal.drvState.lod[0].mallocPtr = ycbcr.y;
187            mAlloc[idx]->mHal.drvState.lod[1].mallocPtr = ycbcr.cb;
188            mAlloc[idx]->mHal.drvState.lod[2].mallocPtr = ycbcr.cr;
189
190            mAlloc[idx]->mHal.drvState.lod[0].stride = ycbcr.ystride;
191            mAlloc[idx]->mHal.drvState.lod[1].stride = ycbcr.cstride;
192            mAlloc[idx]->mHal.drvState.lod[2].stride = ycbcr.cstride;
193
194            mAlloc[idx]->mHal.drvState.yuv.shift = 1;
195            mAlloc[idx]->mHal.drvState.yuv.step = ycbcr.chroma_step;
196            mAlloc[idx]->mHal.drvState.lodCount = 3;
197        } else if (mSlots[slot].mGraphicBuffer->getPixelFormat() ==
198                       HAL_PIXEL_FORMAT_YV12) {
199            // For YV12, the data layout is Y, followed by Cr, followed by Cb;
200            // for YCbCr_420_888, it's Y, followed by Cb, followed by Cr.
201            // RenderScript assumes lod[0] is Y, lod[1] is Cb, and lod[2] is Cr.
202            const int cWidth = yWidth / 2;
203            const int cHeight = yHeight / 2;
204
205            mAlloc[idx]->mHal.drvState.lod[1].dimX = cWidth;
206            mAlloc[idx]->mHal.drvState.lod[1].dimY = cHeight;
207            mAlloc[idx]->mHal.drvState.lod[2].dimX = cWidth;
208            mAlloc[idx]->mHal.drvState.lod[2].dimY = cHeight;
209
210            size_t yStride = rsRound(yWidth *
211                 mAlloc[idx]->mHal.state.type->getElementSizeBytes(), 16);
212            size_t cStride = rsRound(yStride >> 1, 16);
213
214            uint8_t *yPtr = (uint8_t *)mAlloc[idx]->mHal.drvState.lod[0].mallocPtr;
215            uint8_t *crPtr = yPtr + yStride * yHeight;
216            uint8_t *cbPtr = crPtr + cStride * cHeight;
217
218            mAlloc[idx]->mHal.drvState.lod[1].mallocPtr = cbPtr;
219            mAlloc[idx]->mHal.drvState.lod[2].mallocPtr = crPtr;
220
221            mAlloc[idx]->mHal.drvState.lod[0].stride = yStride;
222            mAlloc[idx]->mHal.drvState.lod[1].stride = cStride;
223            mAlloc[idx]->mHal.drvState.lod[2].stride = cStride;
224
225            mAlloc[idx]->mHal.drvState.yuv.shift = 1;
226            mAlloc[idx]->mHal.drvState.yuv.step = 1;
227            mAlloc[idx]->mHal.drvState.lodCount = 3;
228        } else {
229            ALOGD("Unrecognized format: %d",
230               mSlots[slot].mGraphicBuffer->getPixelFormat());
231        }
232    }
233
234    return OK;
235}
236
237status_t GrallocConsumer::unlockBuffer(uint32_t idx) {
238    Mutex::Autolock _l(mMutex);
239    return releaseAcquiredBufferLocked(idx);
240}
241
242status_t GrallocConsumer::releaseAcquiredBufferLocked(uint32_t idx) {
243    status_t err;
244
245    if (idx >= mNumAlloc) {
246        ALOGE("Invalid buffer index: %d", idx);
247        return BAD_VALUE;
248    }
249    if (mAcquiredBuffer[idx].mGraphicBuffer == nullptr) {
250       return OK;
251    }
252
253    err = mAcquiredBuffer[idx].mGraphicBuffer->unlock();
254    if (err != OK) {
255        ALOGE("%s: Unable to unlock graphic buffer", __FUNCTION__);
256        return err;
257    }
258    int buf = mAcquiredBuffer[idx].mSlot;
259
260    // release the buffer if it hasn't already been freed by the BufferQueue.
261    // This can happen, for example, when the producer of this buffer
262    // disconnected after this buffer was acquired.
263    if (CC_LIKELY(mAcquiredBuffer[idx].mGraphicBuffer ==
264            mSlots[buf].mGraphicBuffer)) {
265        releaseBufferLocked(
266                buf, mAcquiredBuffer[idx].mGraphicBuffer,
267                EGL_NO_DISPLAY, EGL_NO_SYNC_KHR);
268    }
269
270    mAcquiredBuffer[idx].mSlot = BufferQueue::INVALID_BUFFER_SLOT;
271    mAcquiredBuffer[idx].mBufferPointer = nullptr;
272    mAcquiredBuffer[idx].mGraphicBuffer.clear();
273    return OK;
274}
275
276uint32_t GrallocConsumer::getNextAvailableIdx(Allocation *a) {
277    for (uint32_t i = 0; i < mNumAlloc; i++) {
278        if (isIdxUsed[i] == false) {
279            mAlloc[i] = a;
280            isIdxUsed[i] = true;
281            return i;
282        }
283    }
284    return mNumAlloc;
285}
286
287bool GrallocConsumer::releaseIdx(uint32_t idx) {
288    if (idx >= mNumAlloc) {
289        ALOGE("Invalid buffer index: %d", idx);
290        return false;
291    }
292    if (isIdxUsed[idx] == false) {
293        ALOGV("Buffer index already released: %d", idx);
294        return true;
295    }
296    status_t err;
297    err = unlockBuffer(idx);
298    if (err != OK) {
299        ALOGE("Unable to unlock graphic buffer");
300        return false;
301    }
302    mAlloc[idx] = nullptr;
303    isIdxUsed[idx] = false;
304    return true;
305}
306
307} // namespace renderscript
308} // namespace android
309