/**
 * 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 <media/stagefright/FileSource.h>
#include <media/stagefright/MediaExtractor.h>
#include <media/stagefright/MediaSource.h>
#include <media/stagefright/MetaData.h>
#include "include/MPEG4Extractor.h"
#define CONVERSION_FACTOR_SEC_TO_MICROSEC 1000000

using namespace android;

int main(int argc, char **argv) {
    if(argc < 2) {
        return EXIT_FAILURE;
    }
    const sp<DataSource> dataSource = new FileSource(argv[1]);
    MediaExtractor *mp4Extractor = new MPEG4Extractor(dataSource.get());

    if(!mp4Extractor) {
        return EXIT_FAILURE;
    }
    //seek to 10 seconds in the mp4 file
    int64_t seekTimeUs = 10 * CONVERSION_FACTOR_SEC_TO_MICROSEC;
    size_t numTracks = mp4Extractor->countTracks();
    sp<IMediaSource> mediaSource;
    sp<MetaData> metadata;
    for(size_t i = 0; i < numTracks; ++i) {
        mediaSource = mp4Extractor->getTrack(i);
        metadata = mp4Extractor->getTrackMetaData(i, MediaExtractor::kIncludeExtensiveMetaData);
        MediaSource::ReadOptions options;
        if (seekTimeUs >= 0) {
            options.setSeekTo(seekTimeUs, MediaSource::ReadOptions::SEEK_PREVIOUS_SYNC);
        }
        MediaBuffer *mbuf = nullptr;
        mediaSource->start(metadata.get());
        mediaSource->read(&mbuf, &options);
    }
    return EXIT_SUCCESS;
}