/*M///////////////////////////////////////////////////////////////////////////////////////
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//  If you do not agree to this license, do not download, install,
//  copy or use the software.
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//
//                        Intel License Agreement
//                For Open Source Computer Vision Library
//
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// Redistribution and use in source and binary forms, with or without modification,
// are permitted provided that the following conditions are met:
//
//   * Redistribution's of source code must retain the above copyright notice,
//     this list of conditions and the following disclaimer.
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#include "precomp.hpp"

#include "grfmt_base.hpp"
#include "bitstrm.hpp"

namespace cv
{

BaseImageDecoder::BaseImageDecoder()
{
    m_width = m_height = 0;
    m_type = -1;
    m_buf_supported = false;
    m_scale_denom = 1;
}

bool BaseImageDecoder::setSource( const String& filename )
{
    m_filename = filename;
    m_buf.release();
    return true;
}

bool BaseImageDecoder::setSource( const Mat& buf )
{
    if( !m_buf_supported )
        return false;
    m_filename = String();
    m_buf = buf;
    return true;
}

size_t BaseImageDecoder::signatureLength() const
{
    return m_signature.size();
}

bool BaseImageDecoder::checkSignature( const String& signature ) const
{
    size_t len = signatureLength();
    return signature.size() >= len && memcmp( signature.c_str(), m_signature.c_str(), len ) == 0;
}

int BaseImageDecoder::setScale( const int& scale_denom )
{
    int temp = m_scale_denom;
    m_scale_denom = scale_denom;
    return temp;
}

ImageDecoder BaseImageDecoder::newDecoder() const
{
    return ImageDecoder();
}

BaseImageEncoder::BaseImageEncoder()
{
    m_buf_supported = false;
}

bool  BaseImageEncoder::isFormatSupported( int depth ) const
{
    return depth == CV_8U;
}

String BaseImageEncoder::getDescription() const
{
    return m_description;
}

bool BaseImageEncoder::setDestination( const String& filename )
{
    m_filename = filename;
    m_buf = 0;
    return true;
}

bool BaseImageEncoder::setDestination( std::vector<uchar>& buf )
{
    if( !m_buf_supported )
        return false;
    m_buf = &buf;
    m_buf->clear();
    m_filename = String();
    return true;
}

ImageEncoder BaseImageEncoder::newEncoder() const
{
    return ImageEncoder();
}

void BaseImageEncoder::throwOnEror() const
{
    if(!m_last_error.empty())
    {
        String msg = "Raw image encoder error: " + m_last_error;
        CV_Error( CV_BadImageSize, msg.c_str() );
    }
}

}

/* End of file. */
