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/*Copyright (c) 2012, The Linux Foundation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
* * Neither the name of The Linux Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
//#define LOG_NDEBUG 0
#define LOG_TAG "ExtendedExtractor"
#include <utils/Log.h>
#include <dlfcn.h> // for dlopen/dlclose
#include "include/ExtendedExtractor.h"
static const char* EXTENDED_PARSER_LIB = "libExtendedExtractor.so";
namespace android {
void* ExtendedParserLib() {
static void* extendedParserLib = NULL;
static bool alreadyTriedToOpenParsers = false;
if(!alreadyTriedToOpenParsers) {
alreadyTriedToOpenParsers = true;
extendedParserLib = ::dlopen(EXTENDED_PARSER_LIB, RTLD_LAZY);
if(extendedParserLib == NULL) {
ALOGV("Failed to open EXTENDED_PARSER_LIB, dlerror = %s \n", dlerror());
}
}
return extendedParserLib;
}
MediaExtractor* ExtendedExtractor::CreateExtractor(const sp<DataSource> &source, const char *mime) {
static MediaExtractorFactory mediaFactoryFunction = NULL;
static bool alreadyTriedToFindFactoryFunction = false;
MediaExtractor* extractor = NULL;
if(!alreadyTriedToFindFactoryFunction) {
void *extendedParserLib = ExtendedParserLib();
if (extendedParserLib != NULL) {
mediaFactoryFunction = (MediaExtractorFactory) dlsym(extendedParserLib, MEDIA_CREATE_EXTRACTOR);
alreadyTriedToFindFactoryFunction = true;
}
}
if(mediaFactoryFunction==NULL) {
ALOGE(" dlsym for ExtendedExtractor factory function failed, dlerror = %s \n", dlerror());
return NULL;
}
extractor = mediaFactoryFunction(source, mime);
if(extractor==NULL) {
ALOGE(" ExtendedExtractor failed to instantiate extractor \n");
}
return extractor;
}
bool SniffExtendedExtractor(const sp<DataSource> &source, String8 *mimeType,
float *confidence,sp<AMessage> *meta) {
void *extendedParserLib = ExtendedParserLib();
bool retVal = false;
if (extendedParserLib != NULL) {
ExtendedExtractorSniffers extendedExtractorSniffers=
(ExtendedExtractorSniffers) dlsym(extendedParserLib, EXTENDED_EXTRACTOR_SNIFFERS);
if(extendedExtractorSniffers == NULL) {
ALOGE(" dlsym for extendedExtractorSniffers function failed, dlerror = %s \n", dlerror());
return retVal;
}
retVal = extendedExtractorSniffers(source, mimeType, confidence, meta);
if(!retVal) {
ALOGV("ExtendedExtractor:: ExtendedExtractorSniffers Failed");
}
}
return retVal;
}
} // namespace android
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