avTranscoder/src/AvTranscoder/properties/DataProperties.cpp at develop · valnoel/avTranscoder · GitHub

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#include "DataProperties.hpp"

#include <AvTranscoder/properties/util.hpp>

extern "C" {
#include <libavcodec/avcodec.h>
}

#include <bitset>

namespace avtranscoder
{

void DataProperties::detectAncillaryData()
{
    AVPacket pkt = *av_packet_alloc();

    bool detection = false;

    while(!av_read_frame(const_cast<AVFormatContext*>(_formatContext), &pkt))
    {
        if(pkt.stream_index == (int)_streamIndex)
        {
            LOG_DEBUG("DataProperties - start detect packet");

            size_t offset = 0;
            LOG_DEBUG(offset << " - " << (int)pkt.data[offset] << " | " << std::bitset<8>(pkt.data[offset]))
            offset++;
            LOG_DEBUG(offset << " - " << (int)pkt.data[offset] << " | " << std::bitset<8>(pkt.data[offset]))
            offset++;
            LOG_DEBUG(offset << " - " << (int)pkt.data[offset] << " | " << std::bitset<8>(pkt.data[offset]))
            offset++;
            LOG_DEBUG(offset << " - " << (int)pkt.data[offset] << " | " << std::bitset<8>(pkt.data[offset]))
            offset++;
            LOG_DEBUG(offset << " - " << (int)pkt.data[offset] << " | " << std::bitset<8>(pkt.data[offset]))
            offset++;
            LOG_DEBUG(offset << " - " << (int)pkt.data[offset] << " | " << std::bitset<8>(pkt.data[offset]))
            offset++;
            LOG_DEBUG(offset << " - " << (int)pkt.data[offset] << " | " << std::bitset<8>(pkt.data[offset]))
            offset++;
            LOG_DEBUG(offset << " - " << (int)pkt.data[offset] << " | " << std::bitset<8>(pkt.data[offset]))
            offset++;
            LOG_DEBUG(offset << " - " << (int)pkt.data[offset] << " | " << std::bitset<8>(pkt.data[offset]))
            offset++;
            LOG_DEBUG(offset << " - " << (int)pkt.data[offset] << " | " << std::bitset<8>(pkt.data[offset]))
            offset++;
            LOG_DEBUG(offset << " - " << (int)pkt.data[offset] << " | " << std::bitset<8>(pkt.data[offset]))
            offset++;
            LOG_DEBUG(offset << " - " << (int)pkt.data[offset] << " | " << std::bitset<8>(pkt.data[offset]))
            offset++;
            LOG_DEBUG(offset << " - " << (int)pkt.data[offset] << " | " << std::bitset<8>(pkt.data[offset]))
            offset++;
            LOG_DEBUG(offset << " - " << (int)pkt.data[offset] << " | " << std::bitset<8>(pkt.data[offset]))
            offset++;
            LOG_DEBUG(offset << " - " << (int)pkt.data[offset] << " | " << std::bitset<8>(pkt.data[offset]))
            offset++;
            LOG_DEBUG(offset << " - " << (int)pkt.data[offset] << " | " << std::bitset<8>(pkt.data[offset]))
            offset++;
            LOG_DEBUG(offset << " - " << (int)pkt.data[offset] << " | " << std::bitset<8>(pkt.data[offset]))
            offset++;
            LOG_DEBUG(offset << " - " << (int)pkt.data[offset] << " | " << std::bitset<8>(pkt.data[offset]))
            offset++;
            LOG_DEBUG(offset << " - " << (int)pkt.data[offset] << " | " << std::bitset<8>(pkt.data[offset]))
            offset++;
            LOG_DEBUG(offset << " - " << (int)pkt.data[offset] << " | " << std::bitset<8>(pkt.data[offset]))
            offset++;

            unsigned short numberOfLines = (unsigned int)(pkt.data[0] << 8) + pkt.data[1];

            LOG_DEBUG("DataProperties - number of lines " << numberOfLines)

            detection = true;
        }

        av_packet_unref(&pkt);

        if(detection)
            break;
    }
}

std::ostream& operator<<(std::ostream& flux, const DataProperties& dataProperties)
{
    flux << detail::separator << " Data stream " << detail::separator << std::endl;

    PropertyVector properties = dataProperties.asVector();
    for(PropertyVector::iterator it = properties.begin(); it != properties.end(); ++it)
    {
        flux << std::setw(detail::keyWidth) << it->first << ": " << it->second << std::endl;
    }

    return flux;
}
}