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/**
* Copyright (C) 2020 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <IMediaExtractor.h>
#include <dlfcn.h>
#include <signal.h>
#include <stdlib.h>
#include <fcntl.h>
#include "../includes/common.h"
#include "../includes/memutils.h"
#if _32_BIT
#define LIBNAME "/system/lib/extractors/libmidiextractor.so"
#define LIBNAME_APEX \
"/apex/com.android.media/lib/extractors/libmidiextractor.so"
#elif _64_BIT
#define LIBNAME "/system/lib64/extractors/libmidiextractor.so"
#define LIBNAME_APEX \
"/apex/com.android.media/lib64/extractors/libmidiextractor.so"
#endif
char enable_selective_overload = ENABLE_NONE;
using namespace android;
class XMFDataSource : public DataSource {
public:
int mFdData;
int mFdInfo;
XMFDataSource(int fdData, int fdInfo) {
mFdData = fdData;
mFdInfo = fdInfo;
}
~XMFDataSource() = default;
virtual ssize_t readAt(off64_t offset __attribute__((unused)), void *data,
size_t size) {
uint32_t infoOffset, infoSize;
read(mFdInfo, &infoSize, sizeof(int32_t));
read(mFdInfo, &infoOffset, sizeof(int32_t));
lseek(mFdData, infoOffset, SEEK_SET);
read(mFdData, data, infoSize);
return size;
}
virtual status_t getSize(off64_t *size) {
*size = 0x10000;
return 0;
}
virtual status_t initCheck() const { return 0; }
};
void close_resources(int fdData, int fdInfo, void *libHandle) {
if (fdData >= 0) {
::close(fdData);
}
if (fdInfo >= 0) {
::close(fdInfo);
}
if (libHandle) {
dlclose(libHandle);
}
}
int main(int argc, char **argv) {
if (argc < 3) {
return EXIT_FAILURE;
}
enable_selective_overload = ENABLE_ALL;
void *libHandle = dlopen(LIBNAME, RTLD_NOW | RTLD_LOCAL);
if (!libHandle) {
libHandle = dlopen(LIBNAME_APEX, RTLD_NOW | RTLD_LOCAL);
if (!libHandle) {
return EXIT_FAILURE;
}
}
GetExtractorDef getDef = (GetExtractorDef)dlsym(libHandle, "GETEXTRACTORDEF");
if (!getDef) {
dlclose(libHandle);
return EXIT_FAILURE;
}
int fdData = open(argv[1], O_RDONLY);
if (fdData < 0) {
dlclose(libHandle);
return EXIT_FAILURE;
}
int fdInfo = open(argv[2], O_RDONLY);
if (fdInfo < 0) {
close_resources(fdData, fdInfo, libHandle);
return EXIT_FAILURE;
}
sp<DataSource> dataSource = (sp<DataSource>)new XMFDataSource(fdData, fdInfo);
if (!dataSource) {
close_resources(fdData, fdInfo, libHandle);
return EXIT_FAILURE;
}
void *meta = nullptr;
FreeMetaFunc freeMeta = nullptr;
float confidence = 0.0f;
if (getDef().def_version == EXTRACTORDEF_VERSION_NDK_V1) {
getDef().u.v2.sniff(dataSource->wrap(), &confidence, &meta, &freeMeta);
} else if (getDef().def_version == EXTRACTORDEF_VERSION_NDK_V2) {
getDef().u.v3.sniff(dataSource->wrap(), &confidence, &meta, &freeMeta);
}
close_resources(fdData, fdInfo, libHandle);
enable_selective_overload = ENABLE_NONE;
return EXIT_SUCCESS;
}
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