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86 lines
2.0 KiB
86 lines
2.0 KiB
/*
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* Copyright (C) 2014 by Jonathan Naylor G4KLX
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "AMBEFileReader.h"
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#include "DStarDefines.h"
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#include <wx/wx.h>
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static const char AMBE_SIGNATURE[] = "AMBE";
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static const unsigned int AMBE_SIGNATURE_LENGTH = 4U;
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CAMBEFileReader::CAMBEFileReader() :
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m_fileName(),
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m_file()
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{
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}
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CAMBEFileReader::~CAMBEFileReader()
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{
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}
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wxString CAMBEFileReader::getFileName()
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{
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return m_fileName;
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}
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bool CAMBEFileReader::open(const wxString& fileName)
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{
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m_fileName = fileName;
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bool res = m_file.Open(fileName, wxT("rb"));
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if (!res)
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return false;
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unsigned char buffer[AMBE_SIGNATURE_LENGTH];
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size_t n = m_file.Read(buffer, AMBE_SIGNATURE_LENGTH);
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if (n != AMBE_SIGNATURE_LENGTH) {
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m_file.Close();
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return false;
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}
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if (::memcmp(buffer, AMBE_SIGNATURE, AMBE_SIGNATURE_LENGTH) != 0) {
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m_file.Close();
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return false;
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}
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return true;
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}
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unsigned int CAMBEFileReader::read(unsigned char* buffer, unsigned int length, DVTFR_TYPE& type)
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{
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wxASSERT(buffer != 0);
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wxASSERT(length > 0U);
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if (length > VOICE_FRAME_LENGTH_BYTES)
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length = VOICE_FRAME_LENGTH_BYTES;
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size_t n = m_file.Read(buffer, length);
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if (n != length)
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return 0U;
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type = DVTFR_DETAIL;
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return length;
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}
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void CAMBEFileReader::close()
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{
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m_file.Close();
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}
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