| /** |
| * 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; |
| } |