165 lines
4.3 KiB
C++
165 lines
4.3 KiB
C++
/*
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* Copyright (C) 2008-2012 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#define LOG_TAG "libRS_cpp"
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#include <utils/Log.h>
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#include <malloc.h>
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#include <string.h>
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#include "RenderScript.h"
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bool RenderScript::gInitialized = false;
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pthread_mutex_t RenderScript::gInitMutex = PTHREAD_MUTEX_INITIALIZER;
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RenderScript::RenderScript() {
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mDev = NULL;
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mContext = NULL;
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mErrorFunc = NULL;
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mMessageFunc = NULL;
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mMessageRun = false;
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memset(&mElements, 0, sizeof(mElements));
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}
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RenderScript::~RenderScript() {
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mMessageRun = false;
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rsContextDeinitToClient(mContext);
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void *res = NULL;
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int status = pthread_join(mMessageThreadId, &res);
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rsContextDestroy(mContext);
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mContext = NULL;
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rsDeviceDestroy(mDev);
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mDev = NULL;
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}
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bool RenderScript::init(int targetApi) {
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mDev = rsDeviceCreate();
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if (mDev == 0) {
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ALOGE("Device creation failed");
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return false;
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}
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mContext = rsContextCreate(mDev, 0, targetApi);
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if (mContext == 0) {
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ALOGE("Context creation failed");
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return false;
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}
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pid_t mNativeMessageThreadId;
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int status = pthread_create(&mMessageThreadId, NULL, threadProc, this);
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if (status) {
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ALOGE("Failed to start RenderScript message thread.");
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return false;
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}
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// Wait for the message thread to be active.
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while (!mMessageRun) {
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usleep(1000);
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}
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return true;
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}
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void RenderScript::throwError(const char *err) const {
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ALOGE("RS CPP error: %s", err);
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int * v = NULL;
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v[0] = 0;
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}
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void * RenderScript::threadProc(void *vrsc) {
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RenderScript *rs = static_cast<RenderScript *>(vrsc);
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size_t rbuf_size = 256;
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void * rbuf = malloc(rbuf_size);
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rsContextInitToClient(rs->mContext);
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rs->mMessageRun = true;
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while (rs->mMessageRun) {
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size_t receiveLen = 0;
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uint32_t usrID = 0;
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uint32_t subID = 0;
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RsMessageToClientType r = rsContextPeekMessage(rs->mContext,
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&receiveLen, sizeof(receiveLen),
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&usrID, sizeof(usrID));
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if (receiveLen >= rbuf_size) {
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rbuf_size = receiveLen + 32;
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rbuf = realloc(rbuf, rbuf_size);
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}
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if (!rbuf) {
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ALOGE("RenderScript::message handler realloc error %zu", rbuf_size);
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// No clean way to recover now?
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}
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rsContextGetMessage(rs->mContext, rbuf, rbuf_size, &receiveLen, sizeof(receiveLen),
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&subID, sizeof(subID));
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switch(r) {
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case RS_MESSAGE_TO_CLIENT_ERROR:
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ALOGE("RS Error %s", (const char *)rbuf);
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if(rs->mMessageFunc != NULL) {
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rs->mErrorFunc(usrID, (const char *)rbuf);
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}
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break;
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case RS_MESSAGE_TO_CLIENT_EXCEPTION:
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// teardown. But we want to avoid starving other threads during
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// teardown by yielding until the next line in the destructor can
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// execute to set mRun = false
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usleep(1000);
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break;
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case RS_MESSAGE_TO_CLIENT_USER:
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if(rs->mMessageFunc != NULL) {
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rs->mMessageFunc(usrID, rbuf, receiveLen);
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} else {
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ALOGE("Received a message from the script with no message handler installed.");
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}
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break;
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default:
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ALOGE("RenderScript unknown message type %i", r);
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}
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}
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if (rbuf) {
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free(rbuf);
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}
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ALOGE("RenderScript Message thread exiting.");
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return NULL;
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}
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void RenderScript::setErrorHandler(ErrorHandlerFunc_t func) {
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mErrorFunc = func;
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}
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void RenderScript::setMessageHandler(MessageHandlerFunc_t func) {
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mMessageFunc = func;
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}
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void RenderScript::contextDump() {
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}
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void RenderScript::finish() {
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}
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