RenderScript.cpp revision 66f0a168c4227d4e302f4ffb21ec7e9d7b9ca828 
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#include <malloc.h>
18#include <string.h>
19#include <pthread.h>
20
21#include "RenderScript.h"
22#include "rsCppStructs.h"
23#include "rsCppInternal.h"
24#include "rsDispatch.h"
25
26#include <dlfcn.h>
27#include <unistd.h>
28
29#if !defined(RS_SERVER) && !defined(RS_COMPATIBILITY_LIB) && defined(HAVE_ANDROID_OS)
30#include <cutils/properties.h>
31#else
32#include "rsCompatibilityLib.h"
33#endif
34
35
36using namespace android;
37using namespace RSC;
38
39bool RS::gInitialized = false;
40bool RS::usingNative = false;
41pthread_mutex_t RS::gInitMutex = PTHREAD_MUTEX_INITIALIZER;
42dispatchTable* RS::dispatch = nullptr;
43static int gInitError = 0;
44
45RS::RS() {
46    mDev = nullptr;
47    mContext = nullptr;
48    mErrorFunc = nullptr;
49    mMessageFunc = nullptr;
50    mMessageRun = false;
51    mInit = false;
52    mCurrentError = RS_SUCCESS;
53
54    memset(&mElements, 0, sizeof(mElements));
55    memset(&mSamplers, 0, sizeof(mSamplers));
56}
57
58RS::~RS() {
59    if (mInit == true) {
60        mMessageRun = false;
61
62        if (mContext) {
63            RS::dispatch->ContextDeinitToClient(mContext);
64
65            void *res = nullptr;
66            int status = pthread_join(mMessageThreadId, &res);
67
68            RS::dispatch->ContextDestroy(mContext);
69            mContext = nullptr;
70        }
71        if (mDev) {
72            RS::dispatch->DeviceDestroy(mDev);
73            mDev = nullptr;
74        }
75    }
76}
77
78bool RS::init(std::string name, uint32_t flags) {
79    return RS::init(name, RS_VERSION, flags);
80}
81
82static bool loadSymbols(void* handle) {
83
84    RS::dispatch->AllocationGetType = (AllocationGetTypeFnPtr)dlsym(handle, "rsaAllocationGetType");
85    if (RS::dispatch->AllocationGetType == nullptr) {
86        ALOGV("Couldn't initialize RS::dispatch->AllocationGetType");
87        return false;
88    }
89    RS::dispatch->TypeGetNativeData = (TypeGetNativeDataFnPtr)dlsym(handle, "rsaTypeGetNativeData");
90    if (RS::dispatch->TypeGetNativeData == nullptr) {
91        ALOGV("Couldn't initialize RS::dispatch->TypeGetNativeData");
92        return false;
93    }
94    RS::dispatch->ElementGetNativeData = (ElementGetNativeDataFnPtr)dlsym(handle, "rsaElementGetNativeData");
95    if (RS::dispatch->ElementGetNativeData == nullptr) {
96        ALOGV("Couldn't initialize RS::dispatch->ElementGetNativeData");
97        return false;
98    }
99    RS::dispatch->ElementGetSubElements = (ElementGetSubElementsFnPtr)dlsym(handle, "rsaElementGetSubElements");
100    if (RS::dispatch->ElementGetSubElements == nullptr) {
101        ALOGV("Couldn't initialize RS::dispatch->ElementGetSubElements");
102        return false;
103    }
104    RS::dispatch->DeviceCreate = (DeviceCreateFnPtr)dlsym(handle, "rsDeviceCreate");
105    if (RS::dispatch->DeviceCreate == nullptr) {
106        ALOGV("Couldn't initialize RS::dispatch->DeviceCreate");
107        return false;
108    }
109    RS::dispatch->DeviceDestroy = (DeviceDestroyFnPtr)dlsym(handle, "rsDeviceDestroy");
110    if (RS::dispatch->DeviceDestroy == nullptr) {
111        ALOGV("Couldn't initialize RS::dispatch->DeviceDestroy");
112        return false;
113    }
114    RS::dispatch->DeviceSetConfig = (DeviceSetConfigFnPtr)dlsym(handle, "rsDeviceSetConfig");
115    if (RS::dispatch->DeviceSetConfig == nullptr) {
116        ALOGV("Couldn't initialize RS::dispatch->DeviceSetConfig");
117        return false;
118    }
119    RS::dispatch->ContextCreate = (ContextCreateFnPtr)dlsym(handle, "rsContextCreate");;
120    if (RS::dispatch->ContextCreate == nullptr) {
121        ALOGV("Couldn't initialize RS::dispatch->ContextCreate");
122        return false;
123    }
124    RS::dispatch->GetName = (GetNameFnPtr)dlsym(handle, "rsaGetName");;
125    if (RS::dispatch->GetName == nullptr) {
126        ALOGV("Couldn't initialize RS::dispatch->GetName");
127        return false;
128    }
129    RS::dispatch->ContextDestroy = (ContextDestroyFnPtr)dlsym(handle, "rsContextDestroy");
130    if (RS::dispatch->ContextDestroy == nullptr) {
131        ALOGV("Couldn't initialize RS::dispatch->ContextDestroy");
132        return false;
133    }
134    RS::dispatch->ContextGetMessage = (ContextGetMessageFnPtr)dlsym(handle, "rsContextGetMessage");
135    if (RS::dispatch->ContextGetMessage == nullptr) {
136        ALOGV("Couldn't initialize RS::dispatch->ContextGetMessage");
137        return false;
138    }
139    RS::dispatch->ContextPeekMessage = (ContextPeekMessageFnPtr)dlsym(handle, "rsContextPeekMessage");
140    if (RS::dispatch->ContextPeekMessage == nullptr) {
141        ALOGV("Couldn't initialize RS::dispatch->ContextPeekMessage");
142        return false;
143    }
144    RS::dispatch->ContextSendMessage = (ContextSendMessageFnPtr)dlsym(handle, "rsContextSendMessage");
145    if (RS::dispatch->ContextSendMessage == nullptr) {
146        ALOGV("Couldn't initialize RS::dispatch->ContextSendMessage");
147        return false;
148    }
149    RS::dispatch->ContextInitToClient = (ContextInitToClientFnPtr)dlsym(handle, "rsContextInitToClient");
150    if (RS::dispatch->ContextInitToClient == nullptr) {
151        ALOGV("Couldn't initialize RS::dispatch->ContextInitToClient");
152        return false;
153    }
154    RS::dispatch->ContextDeinitToClient = (ContextDeinitToClientFnPtr)dlsym(handle, "rsContextDeinitToClient");
155    if (RS::dispatch->ContextDeinitToClient == nullptr) {
156        ALOGV("Couldn't initialize RS::dispatch->ContextDeinitToClient");
157        return false;
158    }
159    RS::dispatch->TypeCreate = (TypeCreateFnPtr)dlsym(handle, "rsTypeCreate");
160    if (RS::dispatch->TypeCreate == nullptr) {
161        ALOGV("Couldn't initialize RS::dispatch->TypeCreate");
162        return false;
163    }
164    RS::dispatch->AllocationCreateTyped = (AllocationCreateTypedFnPtr)dlsym(handle, "rsAllocationCreateTyped");
165    if (RS::dispatch->AllocationCreateTyped == nullptr) {
166        ALOGV("Couldn't initialize RS::dispatch->AllocationCreateTyped");
167        return false;
168    }
169    RS::dispatch->AllocationCreateFromBitmap = (AllocationCreateFromBitmapFnPtr)dlsym(handle, "rsAllocationCreateFromBitmap");
170    if (RS::dispatch->AllocationCreateFromBitmap == nullptr) {
171        ALOGV("Couldn't initialize RS::dispatch->AllocationCreateFromBitmap");
172        return false;
173    }
174    RS::dispatch->AllocationCubeCreateFromBitmap = (AllocationCubeCreateFromBitmapFnPtr)dlsym(handle, "rsAllocationCubeCreateFromBitmap");
175    if (RS::dispatch->AllocationCubeCreateFromBitmap == nullptr) {
176        ALOGV("Couldn't initialize RS::dispatch->AllocationCubeCreateFromBitmap");
177        return false;
178    }
179    RS::dispatch->AllocationGetSurface = (AllocationGetSurfaceFnPtr)dlsym(handle, "rsAllocationGetSurface");
180    if (RS::dispatch->AllocationGetSurface == nullptr) {
181        ALOGV("Couldn't initialize RS::dispatch->AllocationGetSurface");
182        return false;
183    }
184    RS::dispatch->AllocationSetSurface = (AllocationSetSurfaceFnPtr)dlsym(handle, "rsAllocationSetSurface");
185    if (RS::dispatch->AllocationSetSurface == nullptr) {
186        ALOGV("Couldn't initialize RS::dispatch->AllocationSetSurface");
187        return false;
188    }
189    RS::dispatch->ContextFinish = (ContextFinishFnPtr)dlsym(handle, "rsContextFinish");
190    if (RS::dispatch->ContextFinish == nullptr) {
191        ALOGV("Couldn't initialize RS::dispatch->ContextFinish");
192        return false;
193    }
194    RS::dispatch->ContextDump = (ContextDumpFnPtr)dlsym(handle, "rsContextDump");
195    if (RS::dispatch->ContextDump == nullptr) {
196        ALOGV("Couldn't initialize RS::dispatch->ContextDump");
197        return false;
198    }
199    RS::dispatch->ContextSetPriority = (ContextSetPriorityFnPtr)dlsym(handle, "rsContextSetPriority");
200    if (RS::dispatch->ContextSetPriority == nullptr) {
201        ALOGV("Couldn't initialize RS::dispatch->ContextSetPriority");
202        return false;
203    }
204    RS::dispatch->AssignName = (AssignNameFnPtr)dlsym(handle, "rsAssignName");
205    if (RS::dispatch->AssignName == nullptr) {
206        ALOGV("Couldn't initialize RS::dispatch->AssignName");
207        return false;
208    }
209    RS::dispatch->ObjDestroy = (ObjDestroyFnPtr)dlsym(handle, "rsObjDestroy");
210    if (RS::dispatch->ObjDestroy == nullptr) {
211        ALOGV("Couldn't initialize RS::dispatch->ObjDestroy");
212        return false;
213    }
214    RS::dispatch->ElementCreate = (ElementCreateFnPtr)dlsym(handle, "rsElementCreate");
215    if (RS::dispatch->ElementCreate == nullptr) {
216        ALOGV("Couldn't initialize RS::dispatch->ElementCreate");
217        return false;
218    }
219    RS::dispatch->ElementCreate2 = (ElementCreate2FnPtr)dlsym(handle, "rsElementCreate2");
220    if (RS::dispatch->ElementCreate2 == nullptr) {
221        ALOGV("Couldn't initialize RS::dispatch->ElementCreate2");
222        return false;
223    }
224    RS::dispatch->AllocationCopyToBitmap = (AllocationCopyToBitmapFnPtr)dlsym(handle, "rsAllocationCopyToBitmap");
225    if (RS::dispatch->AllocationCopyToBitmap == nullptr) {
226        ALOGV("Couldn't initialize RS::dispatch->AllocationCopyToBitmap");
227        return false;
228    }
229    RS::dispatch->Allocation1DData = (Allocation1DDataFnPtr)dlsym(handle, "rsAllocation1DData");
230    if (RS::dispatch->Allocation1DData == nullptr) {
231        ALOGV("Couldn't initialize RS::dispatch->Allocation1DData");
232        return false;
233    }
234    RS::dispatch->Allocation1DElementData = (Allocation1DElementDataFnPtr)dlsym(handle, "rsAllocation1DElementData");
235    if (RS::dispatch->Allocation1DElementData == nullptr) {
236        ALOGV("Couldn't initialize RS::dispatch->Allocation1DElementData");
237        return false;
238    }
239    RS::dispatch->Allocation2DData = (Allocation2DDataFnPtr)dlsym(handle, "rsAllocation2DData");
240    if (RS::dispatch->Allocation2DData == nullptr) {
241        ALOGV("Couldn't initialize RS::dispatch->Allocation2DData");
242        return false;
243    }
244    RS::dispatch->Allocation3DData = (Allocation3DDataFnPtr)dlsym(handle, "rsAllocation3DData");
245    if (RS::dispatch->Allocation3DData == nullptr) {
246        ALOGV("Couldn't initialize RS::dispatch->Allocation3DData");
247        return false;
248    }
249    RS::dispatch->AllocationGenerateMipmaps = (AllocationGenerateMipmapsFnPtr)dlsym(handle, "rsAllocationGenerateMipmaps");
250    if (RS::dispatch->AllocationGenerateMipmaps == nullptr) {
251        ALOGV("Couldn't initialize RS::dispatch->AllocationGenerateMipmaps");
252        return false;
253    }
254    RS::dispatch->AllocationRead = (AllocationReadFnPtr)dlsym(handle, "rsAllocationRead");
255    if (RS::dispatch->AllocationRead == nullptr) {
256        ALOGV("Couldn't initialize RS::dispatch->AllocationRead");
257        return false;
258    }
259    RS::dispatch->Allocation1DRead = (Allocation1DReadFnPtr)dlsym(handle, "rsAllocation1DRead");
260    if (RS::dispatch->Allocation1DRead == nullptr) {
261        ALOGV("Couldn't initialize RS::dispatch->Allocation1DRead");
262        return false;
263    }
264    RS::dispatch->Allocation2DRead = (Allocation2DReadFnPtr)dlsym(handle, "rsAllocation2DRead");
265    if (RS::dispatch->Allocation2DRead == nullptr) {
266        ALOGV("Couldn't initialize RS::dispatch->Allocation2DRead");
267        return false;
268    }
269    RS::dispatch->AllocationSyncAll = (AllocationSyncAllFnPtr)dlsym(handle, "rsAllocationSyncAll");
270    if (RS::dispatch->AllocationSyncAll == nullptr) {
271        ALOGV("Couldn't initialize RS::dispatch->AllocationSyncAll");
272        return false;
273    }
274    RS::dispatch->AllocationResize1D = (AllocationResize1DFnPtr)dlsym(handle, "rsAllocationResize1D");
275    if (RS::dispatch->AllocationResize1D == nullptr) {
276        ALOGV("Couldn't initialize RS::dispatch->AllocationResize1D");
277        return false;
278    }
279    RS::dispatch->AllocationCopy2DRange = (AllocationCopy2DRangeFnPtr)dlsym(handle, "rsAllocationCopy2DRange");
280    if (RS::dispatch->AllocationCopy2DRange == nullptr) {
281        ALOGV("Couldn't initialize RS::dispatch->AllocationCopy2DRange");
282        return false;
283    }
284    RS::dispatch->AllocationCopy3DRange = (AllocationCopy3DRangeFnPtr)dlsym(handle, "rsAllocationCopy3DRange");
285    if (RS::dispatch->AllocationCopy3DRange == nullptr) {
286        ALOGV("Couldn't initialize RS::dispatch->AllocationCopy3DRange");
287        return false;
288    }
289    RS::dispatch->SamplerCreate = (SamplerCreateFnPtr)dlsym(handle, "rsSamplerCreate");
290    if (RS::dispatch->SamplerCreate == nullptr) {
291        ALOGV("Couldn't initialize RS::dispatch->SamplerCreate");
292        return false;
293    }
294    RS::dispatch->ScriptBindAllocation = (ScriptBindAllocationFnPtr)dlsym(handle, "rsScriptBindAllocation");
295    if (RS::dispatch->ScriptBindAllocation == nullptr) {
296        ALOGV("Couldn't initialize RS::dispatch->ScriptBindAllocation");
297        return false;
298    }
299    RS::dispatch->ScriptSetTimeZone = (ScriptSetTimeZoneFnPtr)dlsym(handle, "rsScriptSetTimeZone");
300    if (RS::dispatch->ScriptSetTimeZone == nullptr) {
301        ALOGV("Couldn't initialize RS::dispatch->ScriptSetTimeZone");
302        return false;
303    }
304    RS::dispatch->ScriptInvoke = (ScriptInvokeFnPtr)dlsym(handle, "rsScriptInvoke");
305    if (RS::dispatch->ScriptInvoke == nullptr) {
306        ALOGV("Couldn't initialize RS::dispatch->ScriptInvoke");
307        return false;
308    }
309    RS::dispatch->ScriptInvokeV = (ScriptInvokeVFnPtr)dlsym(handle, "rsScriptInvokeV");
310    if (RS::dispatch->ScriptInvokeV == nullptr) {
311        ALOGV("Couldn't initialize RS::dispatch->ScriptInvokeV");
312        return false;
313    }
314    RS::dispatch->ScriptForEach = (ScriptForEachFnPtr)dlsym(handle, "rsScriptForEach");
315    if (RS::dispatch->ScriptForEach == nullptr) {
316        ALOGV("Couldn't initialize RS::dispatch->ScriptForEach");
317        return false;
318    }
319    RS::dispatch->ScriptSetVarI = (ScriptSetVarIFnPtr)dlsym(handle, "rsScriptSetVarI");
320    if (RS::dispatch->ScriptSetVarI == nullptr) {
321        ALOGV("Couldn't initialize RS::dispatch->ScriptSetVarI");
322        return false;
323    }
324    RS::dispatch->ScriptSetVarObj = (ScriptSetVarObjFnPtr)dlsym(handle, "rsScriptSetVarObj");
325    if (RS::dispatch->ScriptSetVarObj == nullptr) {
326        ALOGV("Couldn't initialize RS::dispatch->ScriptSetVarObj");
327        return false;
328    }
329    RS::dispatch->ScriptSetVarJ = (ScriptSetVarJFnPtr)dlsym(handle, "rsScriptSetVarJ");
330    if (RS::dispatch->ScriptSetVarJ == nullptr) {
331        ALOGV("Couldn't initialize RS::dispatch->ScriptSetVarJ");
332        return false;
333    }
334    RS::dispatch->ScriptSetVarF = (ScriptSetVarFFnPtr)dlsym(handle, "rsScriptSetVarF");
335    if (RS::dispatch->ScriptSetVarF == nullptr) {
336        ALOGV("Couldn't initialize RS::dispatch->ScriptSetVarF");
337        return false;
338    }
339    RS::dispatch->ScriptSetVarD = (ScriptSetVarDFnPtr)dlsym(handle, "rsScriptSetVarD");
340    if (RS::dispatch->ScriptSetVarD == nullptr) {
341        ALOGV("Couldn't initialize RS::dispatch->ScriptSetVarD");
342        return false;
343    }
344    RS::dispatch->ScriptSetVarV = (ScriptSetVarVFnPtr)dlsym(handle, "rsScriptSetVarV");
345    if (RS::dispatch->ScriptSetVarV == nullptr) {
346        ALOGV("Couldn't initialize RS::dispatch->ScriptSetVarV");
347        return false;
348    }
349    RS::dispatch->ScriptGetVarV = (ScriptGetVarVFnPtr)dlsym(handle, "rsScriptGetVarV");
350    if (RS::dispatch->ScriptGetVarV == nullptr) {
351        ALOGV("Couldn't initialize RS::dispatch->ScriptGetVarV");
352        return false;
353    }
354    RS::dispatch->ScriptSetVarVE = (ScriptSetVarVEFnPtr)dlsym(handle, "rsScriptSetVarVE");
355    if (RS::dispatch->ScriptSetVarVE == nullptr) {
356        ALOGV("Couldn't initialize RS::dispatch->ScriptSetVarVE");
357        return false;
358    }
359    RS::dispatch->ScriptCCreate = (ScriptCCreateFnPtr)dlsym(handle, "rsScriptCCreate");
360    if (RS::dispatch->ScriptCCreate == nullptr) {
361        ALOGV("Couldn't initialize RS::dispatch->ScriptCCreate");
362        return false;
363    }
364    RS::dispatch->ScriptIntrinsicCreate = (ScriptIntrinsicCreateFnPtr)dlsym(handle, "rsScriptIntrinsicCreate");
365    if (RS::dispatch->ScriptIntrinsicCreate == nullptr) {
366        ALOGV("Couldn't initialize RS::dispatch->ScriptIntrinsicCreate");
367        return false;
368    }
369    RS::dispatch->ScriptKernelIDCreate = (ScriptKernelIDCreateFnPtr)dlsym(handle, "rsScriptKernelIDCreate");
370    if (RS::dispatch->ScriptKernelIDCreate == nullptr) {
371        ALOGV("Couldn't initialize RS::dispatch->ScriptKernelIDCreate");
372        return false;
373    }
374    RS::dispatch->ScriptFieldIDCreate = (ScriptFieldIDCreateFnPtr)dlsym(handle, "rsScriptFieldIDCreate");
375    if (RS::dispatch->ScriptFieldIDCreate == nullptr) {
376        ALOGV("Couldn't initialize RS::dispatch->ScriptFieldIDCreate");
377        return false;
378    }
379    RS::dispatch->ScriptGroupCreate = (ScriptGroupCreateFnPtr)dlsym(handle, "rsScriptGroupCreate");
380    if (RS::dispatch->ScriptGroupCreate == nullptr) {
381        ALOGV("Couldn't initialize RS::dispatch->ScriptGroupCreate");
382        return false;
383    }
384    RS::dispatch->ScriptGroupSetOutput = (ScriptGroupSetOutputFnPtr)dlsym(handle, "rsScriptGroupSetOutput");
385    if (RS::dispatch->ScriptGroupSetOutput == nullptr) {
386        ALOGV("Couldn't initialize RS::dispatch->ScriptGroupSetOutput");
387        return false;
388    }
389    RS::dispatch->ScriptGroupSetInput = (ScriptGroupSetInputFnPtr)dlsym(handle, "rsScriptGroupSetInput");
390    if (RS::dispatch->ScriptGroupSetInput == nullptr) {
391        ALOGV("Couldn't initialize RS::dispatch->ScriptGroupSetInput");
392        return false;
393    }
394    RS::dispatch->ScriptGroupExecute = (ScriptGroupExecuteFnPtr)dlsym(handle, "rsScriptGroupExecute");
395    if (RS::dispatch->ScriptGroupExecute == nullptr) {
396        ALOGV("Couldn't initialize RS::dispatch->ScriptGroupExecute");
397        return false;
398    }
399    RS::dispatch->AllocationIoSend = (AllocationIoSendFnPtr)dlsym(handle, "rsAllocationIoSend");
400    if (RS::dispatch->AllocationIoSend == nullptr) {
401        ALOGV("Couldn't initialize RS::dispatch->AllocationIoSend");
402        return false;
403    }
404    RS::dispatch->AllocationIoReceive = (AllocationIoReceiveFnPtr)dlsym(handle, "rsAllocationIoReceive");
405    if (RS::dispatch->AllocationIoReceive == nullptr) {
406        ALOGV("Couldn't initialize RS::dispatch->AllocationIoReceive");
407        return false;
408    }
409    RS::dispatch->AllocationGetPointer = (AllocationGetPointerFnPtr)dlsym(handle, "rsAllocationGetPointer");
410    if (RS::dispatch->AllocationGetPointer == nullptr) {
411        ALOGV("Couldn't initialize RS::dispatch->AllocationGetPointer");
412        //return false;
413    }
414
415    return true;
416}
417
418// this will only open API 19+ libRS
419// because that's when we changed libRS to extern "C" entry points
420static bool loadSO(const char* filename) {
421    void* handle = dlopen(filename, RTLD_LAZY | RTLD_LOCAL);
422    if (handle == nullptr) {
423        ALOGV("couldn't dlopen %s, %s", filename, dlerror());
424        return false;
425    }
426
427    if (loadSymbols(handle) == false) {
428        ALOGV("%s init failed!", filename);
429        return false;
430    }
431    //ALOGE("Successfully loaded %s", filename);
432    return true;
433}
434
435static uint32_t getProp(const char *str) {
436#if !defined(__LP64__) && !defined(RS_SERVER) && defined(HAVE_ANDROID_OS)
437    char buf[256];
438    property_get(str, buf, "0");
439    return atoi(buf);
440#else
441    return 0;
442#endif
443}
444
445bool RS::initDispatch(int targetApi) {
446    pthread_mutex_lock(&gInitMutex);
447    if (gInitError) {
448        goto error;
449    } else if (gInitialized) {
450        pthread_mutex_unlock(&gInitMutex);
451        return true;
452    }
453
454    RS::dispatch = new dispatchTable;
455
456    // attempt to load libRS, load libRSSupport on failure
457    // if property is set, proceed directly to libRSSupport
458    if (getProp("debug.rs.forcecompat") == 0) {
459        usingNative = loadSO("libRS.so");
460    }
461    if (usingNative == false) {
462        if (loadSO("libRSSupport.so") == false) {
463            ALOGE("Failed to load libRS.so and libRSSupport.so");
464            goto error;
465        }
466    }
467
468    gInitialized = true;
469
470    pthread_mutex_unlock(&gInitMutex);
471    return true;
472
473 error:
474    gInitError = 1;
475    pthread_mutex_unlock(&gInitMutex);
476    return false;
477}
478
479bool RS::init(std::string &name, int targetApi, uint32_t flags) {
480    if (mInit) {
481        return true;
482    }
483
484    if (initDispatch(targetApi) == false) {
485        ALOGE("Couldn't initialize dispatch table");
486        return false;
487    }
488
489    mCacheDir = name;
490
491    mDev = RS::dispatch->DeviceCreate();
492    if (mDev == 0) {
493        ALOGE("Device creation failed");
494        return false;
495    }
496
497    if (flags & ~(RS_CONTEXT_SYNCHRONOUS | RS_CONTEXT_LOW_LATENCY |
498                  RS_CONTEXT_LOW_POWER)) {
499        ALOGE("Invalid flags passed");
500        return false;
501    }
502
503    mContext = RS::dispatch->ContextCreate(mDev, 0, targetApi, RS_CONTEXT_TYPE_NORMAL, flags);
504    if (mContext == 0) {
505        ALOGE("Context creation failed");
506        return false;
507    }
508
509    pid_t mNativeMessageThreadId;
510
511    int status = pthread_create(&mMessageThreadId, nullptr, threadProc, this);
512    if (status) {
513        ALOGE("Failed to start RS message thread.");
514        return false;
515    }
516    // Wait for the message thread to be active.
517    while (!mMessageRun) {
518        usleep(1000);
519    }
520
521    mInit = true;
522
523    return true;
524}
525
526void RS::throwError(RSError error, const char *errMsg) {
527    if (mCurrentError == RS_SUCCESS) {
528        mCurrentError = error;
529        ALOGE("RS CPP error: %s", errMsg);
530    } else {
531        ALOGE("RS CPP error (masked by previous error): %s", errMsg);
532    }
533}
534
535RSError RS::getError() {
536    return mCurrentError;
537}
538
539
540void * RS::threadProc(void *vrsc) {
541    RS *rs = static_cast<RS *>(vrsc);
542    size_t rbuf_size = 256;
543    void * rbuf = malloc(rbuf_size);
544
545    RS::dispatch->ContextInitToClient(rs->mContext);
546    rs->mMessageRun = true;
547
548    while (rs->mMessageRun) {
549        size_t receiveLen = 0;
550        uint32_t usrID = 0;
551        uint32_t subID = 0;
552        RsMessageToClientType r = RS::dispatch->ContextPeekMessage(rs->mContext,
553                                                                   &receiveLen, sizeof(receiveLen),
554                                                                   &usrID, sizeof(usrID));
555
556        if (receiveLen >= rbuf_size) {
557            rbuf_size = receiveLen + 32;
558            rbuf = realloc(rbuf, rbuf_size);
559        }
560        if (!rbuf) {
561            ALOGE("RS::message handler realloc error %zu", rbuf_size);
562            // No clean way to recover now?
563        }
564        RS::dispatch->ContextGetMessage(rs->mContext, rbuf, rbuf_size, &receiveLen, sizeof(receiveLen),
565                            &subID, sizeof(subID));
566
567        switch(r) {
568        case RS_MESSAGE_TO_CLIENT_ERROR:
569            ALOGE("RS Error %s", (const char *)rbuf);
570            rs->throwError(RS_ERROR_RUNTIME_ERROR, "Error returned from runtime");
571            if(rs->mMessageFunc != nullptr) {
572                rs->mErrorFunc(usrID, (const char *)rbuf);
573            }
574            break;
575        case RS_MESSAGE_TO_CLIENT_NONE:
576        case RS_MESSAGE_TO_CLIENT_EXCEPTION:
577        case RS_MESSAGE_TO_CLIENT_RESIZE:
578            // teardown. But we want to avoid starving other threads during
579            // teardown by yielding until the next line in the destructor can
580            // execute to set mRun = false. Note that the FIFO sends an
581            // empty NONE message when it reaches its destructor.
582            usleep(1000);
583            break;
584        case RS_MESSAGE_TO_CLIENT_USER:
585            if(rs->mMessageFunc != nullptr) {
586                rs->mMessageFunc(usrID, rbuf, receiveLen);
587            } else {
588                ALOGE("Received a message from the script with no message handler installed.");
589            }
590            break;
591
592        default:
593            ALOGE("RS unknown message type %i", r);
594        }
595    }
596
597    if (rbuf) {
598        free(rbuf);
599    }
600    ALOGV("RS Message thread exiting.");
601    return nullptr;
602}
603
604void RS::setErrorHandler(ErrorHandlerFunc_t func) {
605    mErrorFunc = func;
606}
607
608void RS::setMessageHandler(MessageHandlerFunc_t func) {
609    mMessageFunc  = func;
610}
611
612void RS::finish() {
613    RS::dispatch->ContextFinish(mContext);
614}
615