/*
 * Copyright (C) 2019 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.
 */

//#define LOG_NDEBUG 0
#define LOG_TAG "NativeExtractor"

#include <jni.h>
#include <fstream>
#include <string>
#include <sys/stat.h>

#include "Extractor.h"

extern "C" JNIEXPORT int32_t JNICALL Java_com_android_media_benchmark_library_Native_Extract(
        JNIEnv *env, jobject thiz, jstring jInputFilePath, jstring jInputFileName,
        jstring jStatsFile) {
    UNUSED(thiz);
    const char *inputFilePath = env->GetStringUTFChars(jInputFilePath, nullptr);
    const char *inputFileName = env->GetStringUTFChars(jInputFileName, nullptr);
    string sFilePath = string(inputFilePath) + string(inputFileName);
    FILE *inputFp = fopen(sFilePath.c_str(), "rb");

    // Read file properties
    struct stat buf;
    stat(sFilePath.c_str(), &buf);
    size_t fileSize = buf.st_size;
    int32_t fd = fileno(inputFp);

    Extractor *extractObj = new Extractor();
    int32_t trackCount = extractObj->initExtractor((long) fd, fileSize);
    if (trackCount <= 0) {
        ALOGE("initExtractor failed");
        return -1;
    }

    int32_t trackID = 0;
    const char *mime = nullptr;
    int32_t status = extractObj->extract(trackID);
    if (status != AMEDIA_OK) {
        ALOGE("Extraction failed");
        return -1;
    }

    if (inputFp) {
        fclose(inputFp);
        inputFp = nullptr;
    }
    status = extractObj->setupTrackFormat(trackID);
    AMediaFormat *format = extractObj->getFormat();
    if (!format) {
        ALOGE("format is null!");
        return -1;
    }
    AMediaFormat_getString(format, AMEDIAFORMAT_KEY_MIME, &mime);
    if (!mime) {
        ALOGE("mime is null!");
        return -1;
    }
    extractObj->deInitExtractor();
    const char *statsFile = env->GetStringUTFChars(jStatsFile, nullptr);
    extractObj->dumpStatistics(string(inputFileName), string(mime), statsFile);
    env->ReleaseStringUTFChars(jStatsFile, statsFile);
    env->ReleaseStringUTFChars(jInputFilePath, inputFilePath);
    env->ReleaseStringUTFChars(jInputFileName, inputFileName);

    delete extractObj;
    return status;
}