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/* Copyright (c) MediaArea.net SARL. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license that can
* be found in the License.html file in the root of the source tree.
*/
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
//
// Contributor: Lionel Duchateau, kurtnoise@free.fr
//
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
//---------------------------------------------------------------------------
// Pre-compilation
#include "MediaInfo/PreComp.h"
#ifdef __BORLANDC__
#pragma hdrstop
#endif
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
#include "MediaInfo/Setup.h"
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
#if defined(MEDIAINFO_RKAU_YES)
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
#include "MediaInfo/Audio/File_Rkau.h"
//---------------------------------------------------------------------------
namespace MediaInfoLib
{
//***************************************************************************
// Constructor/Destructor
//***************************************************************************
//---------------------------------------------------------------------------
File_Rkau::File_Rkau()
:File__Analyze(), File__Tags_Helper()
{
//File__Tags_Helper
Base=this;
}
//***************************************************************************
// Streams management
//***************************************************************************
//---------------------------------------------------------------------------
void File_Rkau::Streams_Finish()
{
//Filling
int64u CompressedSize=File_Size-TagsSize;
float32 CompressionRatio=((float32)UncompressedSize)/CompressedSize;
Fill(Stream_Audio, 0, Audio_StreamSize, CompressedSize);
Fill(Stream_Audio, 0, Audio_Compression_Ratio, CompressionRatio);
Fill(Stream_Audio, 0, Audio_BitRate_Mode, "VBR");
File__Tags_Helper::Streams_Finish();
}
//***************************************************************************
// Buffer - File header
//***************************************************************************
//---------------------------------------------------------------------------
bool File_Rkau::FileHeader_Begin()
{
if (!File__Tags_Helper::FileHeader_Begin())
return false;
//Synchro
if (Buffer_Offset+3>Buffer_Size)
return false;
if (CC3(Buffer+Buffer_Offset)!=0x524B41) //"RKA"
{
File__Tags_Helper::Reject("RKAU");
return false;
}
return true;
}
//---------------------------------------------------------------------------
void File_Rkau::FileHeader_Parse()
{
//Parsing
Ztring version;
int32u SampleRate, source_bytes;
int8u Channels, BitsPerSample, Quality, Flags;
bool joint_stereo, streaming, vrq_lossy_mode;
Skip_Local(3, "Signature");
Get_Local (1, version, "Version");
Get_L4 (source_bytes, "SourceBytes");
Get_L4 (SampleRate, "SampleRate");
Get_L1 (Channels, "Channels");
Get_L1 (BitsPerSample, "BitsPerSample");
Get_L1 (Quality, "Quality");
Get_L1 (Flags, "Flags");
Get_Flags (Flags, 0, joint_stereo, "JointStereo");
Get_Flags (Flags, 1, streaming, "Streaming");
Get_Flags (Flags, 2, vrq_lossy_mode, "VRQLossyMode");
FILLING_BEGIN();
if (SampleRate==0)
return;
Duration=(((int64u)source_bytes*1000)/4)/SampleRate;
if (Duration==0)
return;
UncompressedSize = ((int64u)Channels) * ((int64u)BitsPerSample / 8);
if (UncompressedSize==0)
return;
//Filling data
File__Tags_Helper::Accept("RKAU");
File__Tags_Helper::Stream_Prepare(Stream_Audio);
Fill(Stream_Audio, 0, Audio_Format, "RK Audio");
Fill(Stream_Audio, 0, Audio_Codec, "Rkau");
Fill(Stream_Audio, 0, Audio_Encoded_Library, __T("1.0") + version);
Fill(Stream_Audio, 0, Audio_Compression_Mode, (Quality==0)?"Lossless":"Lossy");
Fill(Stream_Audio, 0, Audio_BitDepth, BitsPerSample);
Fill(Stream_Audio, 0, Audio_Channel_s_, Channels);
Fill(Stream_Audio, 0, Audio_SamplingRate, SampleRate);
Fill(Stream_Audio, 0, Audio_Duration, Duration);
FILLING_END();
//No more needed data
File__Tags_Helper::Finish("RKAU");
}
//***************************************************************************
// C++
//***************************************************************************
} //NameSpace
#endif //MEDIAINFO_RKAU_YES
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