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/**
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*
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* Lame ACM wrapper, encode/decode MP3 based RIFF/AVI files in MS Windows
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*
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* Copyright (c) 2002 Steve Lhomme <steve.lhomme at free.fr>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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/*!
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\author Steve Lhomme
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\version \$Id: ACMStream.cpp,v 1.12 2007/12/26 22:04:08 robert Exp $
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*/
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#if !defined(STRICT)
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#define STRICT
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#endif // STRICT
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#include <assert.h>
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#include <windows.h>
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#include "adebug.h"
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#include "ACMStream.h"
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#include <lame.h>
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// static methods
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ACMStream * ACMStream::Create()
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{
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ACMStream * Result;
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Result = new ACMStream;
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return Result;
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}
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const bool ACMStream::Erase(const ACMStream * a_ACMStream)
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{
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delete a_ACMStream;
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return true;
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}
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// class methods
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ACMStream::ACMStream() :
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m_WorkingBufferUseSize(0),
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gfp(NULL)
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{
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/// \todo get the debug level from the registry
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my_debug = new ADbg(DEBUG_LEVEL_CREATION);
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if (my_debug != NULL) {
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unsigned char DebugFileName[512];
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my_debug->setPrefix("LAMEstream"); /// \todo get it from the registry
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my_debug->setIncludeTime(true); /// \todo get it from the registry
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// Check in the registry if we have to Output Debug information
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DebugFileName[0] = '\0';
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HKEY OssKey;
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if (RegOpenKeyEx( HKEY_LOCAL_MACHINE, "SOFTWARE\\MUKOLI", 0, KEY_READ , &OssKey ) == ERROR_SUCCESS) {
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DWORD DataType;
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DWORD DebugFileNameSize = 512;
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if (RegQueryValueEx( OssKey, "DebugFile", NULL, &DataType, DebugFileName, &DebugFileNameSize ) == ERROR_SUCCESS) {
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if (DataType == REG_SZ) {
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my_debug->setUseFile(true);
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my_debug->setDebugFile((char *)DebugFileName);
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my_debug->OutPut("Debug file is %s",(char *)DebugFileName);
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}
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}
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}
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my_debug->OutPut(DEBUG_LEVEL_FUNC_START, "ACMStream Creation (0X%08X)",this);
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}
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else {
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ADbg debug;
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debug.OutPut("ACMStream::ACMACMStream : Impossible to create my_debug");
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}
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}
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ACMStream::~ACMStream()
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{
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// release memory - encoding is finished
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if (gfp) lame_close( gfp );
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if (my_debug != NULL)
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{
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my_debug->OutPut(DEBUG_LEVEL_FUNC_START, "ACMStream Deletion (0X%08X)",this);
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delete my_debug;
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}
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}
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bool ACMStream::init(const int nSamplesPerSec, const int nOutputSamplesPerSec, const int nChannels, const int nAvgBytesPerSec, const vbr_mode mode)
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{
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bool bResult = false;
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my_SamplesPerSec = nSamplesPerSec;
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my_OutBytesPerSec = nOutputSamplesPerSec;
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my_Channels = nChannels;
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my_AvgBytesPerSec = nAvgBytesPerSec;
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my_VBRMode = mode;
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bResult = true;
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return bResult;
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}
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bool ACMStream::open(const AEncodeProperties & the_Properties)
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{
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bool bResult = false;
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// Init the MP3 Stream
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// Init the global flags structure
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gfp = lame_init();
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// Set input sample frequency
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lame_set_in_samplerate( gfp, my_SamplesPerSec );
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// Set output sample frequency
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lame_set_out_samplerate( gfp, my_OutBytesPerSec );
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lame_set_num_channels( gfp, my_Channels );
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if (my_Channels == 1)
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lame_set_mode( gfp, MONO );
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else
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lame_set_mode( gfp, (MPEG_mode_e)the_Properties.GetChannelModeValue()) ; /// \todo Get the mode from the default configuration
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// lame_set_VBR( gfp, vbr_off ); /// \note VBR not supported for the moment
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lame_set_VBR( gfp, my_VBRMode ); /// \note VBR not supported for the moment
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if (my_VBRMode == vbr_abr)
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{
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lame_set_VBR_q( gfp, 1 );
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lame_set_VBR_mean_bitrate_kbps( gfp, (my_AvgBytesPerSec * 8 + 500) / 1000 );
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if (24000 > lame_get_in_samplerate( gfp ))
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{
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// For MPEG-II
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lame_set_VBR_min_bitrate_kbps( gfp, 8);
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lame_set_VBR_max_bitrate_kbps( gfp, 160);
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}
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else
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{
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// For MPEG-I
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lame_set_VBR_min_bitrate_kbps( gfp, 32);
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lame_set_VBR_max_bitrate_kbps( gfp, 320);
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}
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}
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// Set bitrate
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lame_set_brate( gfp, my_AvgBytesPerSec * 8 / 1000 );
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/// \todo Get the mode from the default configuration
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// Set copyright flag?
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lame_set_copyright( gfp, the_Properties.GetCopyrightMode()?1:0 );
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// Do we have to tag it as non original
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lame_set_original( gfp, the_Properties.GetOriginalMode()?1:0 );
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// Add CRC?
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lame_set_error_protection( gfp, the_Properties.GetCRCMode()?1:0 );
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// Set private bit?
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lame_set_extension( gfp, the_Properties.GetPrivateMode()?1:0 );
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// INFO tag support not possible in ACM - it requires rewinding
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// output stream to the beginning after encoding is finished.
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lame_set_bWriteVbrTag( gfp, 0 );
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if (0 == lame_init_params( gfp ))
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{
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//LAME encoding call will accept any number of samples.
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if ( 0 == lame_get_version( gfp ) )
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{
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// For MPEG-II, only 576 samples per frame per channel
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my_SamplesPerBlock = 576 * lame_get_num_channels( gfp );
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}
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else
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{
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// For MPEG-I, 1152 samples per frame per channel
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my_SamplesPerBlock = 1152 * lame_get_num_channels( gfp );
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}
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}
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my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "version =%d",lame_get_version( gfp ) );
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my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "Layer =3");
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switch ( lame_get_mode( gfp ) )
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{
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case STEREO: my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "mode =Stereo" ); break;
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case JOINT_STEREO: my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "mode =Joint-Stereo" ); break;
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case DUAL_CHANNEL: my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "mode =Forced Stereo" ); break;
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case MONO: my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "mode =Mono" ); break;
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case NOT_SET: /* FALLTROUGH */
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default: my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "mode =Error (unknown)" ); break;
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}
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my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "sampling frequency =%.1f kHz", lame_get_in_samplerate( gfp ) /1000.0 );
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my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "bitrate =%d kbps", lame_get_brate( gfp ) );
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my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "Vbr Min bitrate =%d kbps", lame_get_VBR_min_bitrate_kbps( gfp ) );
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my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "Vbr Max bitrate =%d kbps", lame_get_VBR_max_bitrate_kbps( gfp ) );
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my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "Quality Setting =%d", lame_get_quality( gfp ) );
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my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "Low pass frequency =%d", lame_get_lowpassfreq( gfp ) );
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my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "Low pass width =%d", lame_get_lowpasswidth( gfp ) );
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my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "High pass frequency =%d", lame_get_highpassfreq( gfp ) );
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my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "High pass width =%d", lame_get_highpasswidth( gfp ) );
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my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "No Short Blocks =%d", lame_get_no_short_blocks( gfp ) );
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my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "de-emphasis =%d", lame_get_emphasis( gfp ) );
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my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "private flag =%d", lame_get_extension( gfp ) );
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my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "copyright flag =%d", lame_get_copyright( gfp ) );
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my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "original flag =%d", lame_get_original( gfp ) );
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my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "CRC =%s", lame_get_error_protection( gfp ) ? "on" : "off" );
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my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "Fast mode =%s", ( lame_get_quality( gfp ) )? "enabled" : "disabled" );
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my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "Force mid/side stereo =%s", ( lame_get_force_ms( gfp ) )?"enabled":"disabled" );
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my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "Disable Resorvoir =%d", lame_get_disable_reservoir( gfp ) );
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my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "VBR =%s, VBR_q =%d, VBR method =",
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( lame_get_VBR( gfp ) !=vbr_off ) ? "enabled": "disabled",
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lame_get_VBR_q( gfp ) );
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switch ( lame_get_VBR( gfp ) )
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{
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case vbr_off: my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "vbr_off" ); break;
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case vbr_mt : my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "vbr_mt" ); break;
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case vbr_rh : my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "vbr_rh" ); break;
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case vbr_mtrh: my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "vbr_mtrh" ); break;
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case vbr_abr:
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my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "vbr_abr (average bitrate %d kbps)", lame_get_VBR_mean_bitrate_kbps( gfp ) );
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break;
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default:
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my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "error, unknown VBR setting");
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break;
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}
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my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "Write VBR Header =%s\n", ( lame_get_bWriteVbrTag( gfp ) ) ?"Yes":"No");
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#ifdef FROM_DLL
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beConfig.format.LHV1.dwReSampleRate = my_OutBytesPerSec; // force the user resampling
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#endif // FROM_DLL
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bResult = true;
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return bResult;
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}
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bool ACMStream::close(LPBYTE pOutputBuffer, DWORD *pOutputSize)
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{
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47f805 |
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47f805 |
bool bResult = false;
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47f805 |
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int nOutputSamples = 0;
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nOutputSamples = lame_encode_flush( gfp, pOutputBuffer, 0 );
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if ( nOutputSamples < 0 )
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{
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// BUFFER_TOO_SMALL
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*pOutputSize = 0;
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}
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else
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{
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Packit |
47f805 |
*pOutputSize = nOutputSamples;
|
|
Packit |
47f805 |
|
|
Packit |
47f805 |
bResult = true;
|
|
Packit |
47f805 |
}
|
|
Packit |
47f805 |
|
|
Packit |
47f805 |
// lame will be closed in destructor
|
|
Packit |
47f805 |
//lame_close( gfp );
|
|
Packit |
47f805 |
|
|
Packit |
47f805 |
return bResult;
|
|
Packit |
47f805 |
}
|
|
Packit |
47f805 |
|
|
Packit |
47f805 |
DWORD ACMStream::GetOutputSizeForInput(const DWORD the_SrcLength) const
|
|
Packit |
47f805 |
{
|
|
Packit |
47f805 |
/* double OutputInputRatio;
|
|
Packit |
47f805 |
|
|
Packit |
47f805 |
if (my_VBRMode == vbr_off)
|
|
Packit |
47f805 |
OutputInputRatio = double(my_AvgBytesPerSec) / double(my_OutBytesPerSec * 2);
|
|
Packit |
47f805 |
else // reserve the space for 320 kbps
|
|
Packit |
47f805 |
OutputInputRatio = 40000.0 / double(my_OutBytesPerSec * 2);
|
|
Packit |
47f805 |
|
|
Packit |
47f805 |
OutputInputRatio *= 1.15; // allow 15% more*/
|
|
Packit |
47f805 |
|
|
Packit |
47f805 |
DWORD Result;
|
|
Packit |
47f805 |
|
|
Packit |
47f805 |
// Result = DWORD(double(the_SrcLength) * OutputInputRatio);
|
|
Packit |
47f805 |
Result = DWORD(1.25*the_SrcLength + 7200);
|
|
Packit |
47f805 |
|
|
Packit |
47f805 |
my_debug->OutPut(DEBUG_LEVEL_FUNC_CODE, "Result = %d",Result);
|
|
Packit |
47f805 |
|
|
Packit |
47f805 |
return Result;
|
|
Packit |
47f805 |
}
|
|
Packit |
47f805 |
|
|
Packit |
47f805 |
bool ACMStream::ConvertBuffer(LPACMDRVSTREAMHEADER a_StreamHeader)
|
|
Packit |
47f805 |
{
|
|
Packit |
47f805 |
bool result;
|
|
Packit |
47f805 |
|
|
Packit |
47f805 |
if (my_debug != NULL)
|
|
Packit |
47f805 |
{
|
|
Packit |
47f805 |
my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "enter ACMStream::ConvertBuffer");
|
|
Packit |
47f805 |
}
|
|
Packit |
47f805 |
|
|
Packit |
47f805 |
DWORD InSize = a_StreamHeader->cbSrcLength / 2, OutSize = a_StreamHeader->cbDstLength; // 2 for 8<->16 bits
|
|
Packit |
47f805 |
|
|
Packit |
47f805 |
// Encode it
|
|
Packit |
47f805 |
int dwSamples;
|
|
Packit |
47f805 |
int nOutputSamples = 0;
|
|
Packit |
47f805 |
|
|
Packit |
47f805 |
dwSamples = InSize / lame_get_num_channels( gfp );
|
|
Packit |
47f805 |
|
|
Packit |
47f805 |
if ( 1 == lame_get_num_channels( gfp ) )
|
|
Packit |
47f805 |
{
|
|
Packit |
47f805 |
nOutputSamples = lame_encode_buffer(gfp,(PSHORT)a_StreamHeader->pbSrc,(PSHORT)a_StreamHeader->pbSrc,dwSamples,a_StreamHeader->pbDst,a_StreamHeader->cbDstLength);
|
|
Packit |
47f805 |
}
|
|
Packit |
47f805 |
else
|
|
Packit |
47f805 |
{
|
|
Packit |
47f805 |
nOutputSamples = lame_encode_buffer_interleaved(gfp,(PSHORT)a_StreamHeader->pbSrc,dwSamples,a_StreamHeader->pbDst,a_StreamHeader->cbDstLength);
|
|
Packit |
47f805 |
}
|
|
Packit |
47f805 |
|
|
Packit |
47f805 |
a_StreamHeader->cbSrcLengthUsed = a_StreamHeader->cbSrcLength;
|
|
Packit |
47f805 |
a_StreamHeader->cbDstLengthUsed = nOutputSamples;
|
|
Packit |
47f805 |
|
|
Packit |
47f805 |
result = a_StreamHeader->cbDstLengthUsed <= a_StreamHeader->cbDstLength;
|
|
Packit |
47f805 |
|
|
Packit |
47f805 |
my_debug->OutPut(DEBUG_LEVEL_FUNC_CODE, "UsedSize = %d / EncodedSize = %d, result = %d (%d <= %d)", InSize, OutSize, result, a_StreamHeader->cbDstLengthUsed, a_StreamHeader->cbDstLength);
|
|
Packit |
47f805 |
|
|
Packit |
47f805 |
if (my_debug != NULL)
|
|
Packit |
47f805 |
{
|
|
Packit |
47f805 |
my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "ACMStream::ConvertBuffer result = %d (0x%02X 0x%02X)",result,a_StreamHeader->pbDst[0],a_StreamHeader->pbDst[1]);
|
|
Packit |
47f805 |
}
|
|
Packit |
47f805 |
|
|
Packit |
47f805 |
return result;
|
|
Packit |
47f805 |
}
|
|
Packit |
47f805 |
|
|
Packit |
47f805 |
/* map frequency to a valid MP3 sample frequency
|
|
Packit |
47f805 |
*
|
|
Packit |
47f805 |
* Robert Hegemann 2000-07-01
|
|
Packit |
47f805 |
*/
|
|
Packit |
47f805 |
static int
|
|
Packit |
47f805 |
map2MP3Frequency(int freq)
|
|
Packit |
47f805 |
{
|
|
Packit |
47f805 |
if (freq <= 8000)
|
|
Packit |
47f805 |
return 8000;
|
|
Packit |
47f805 |
if (freq <= 11025)
|
|
Packit |
47f805 |
return 11025;
|
|
Packit |
47f805 |
if (freq <= 12000)
|
|
Packit |
47f805 |
return 12000;
|
|
Packit |
47f805 |
if (freq <= 16000)
|
|
Packit |
47f805 |
return 16000;
|
|
Packit |
47f805 |
if (freq <= 22050)
|
|
Packit |
47f805 |
return 22050;
|
|
Packit |
47f805 |
if (freq <= 24000)
|
|
Packit |
47f805 |
return 24000;
|
|
Packit |
47f805 |
if (freq <= 32000)
|
|
Packit |
47f805 |
return 32000;
|
|
Packit |
47f805 |
if (freq <= 44100)
|
|
Packit |
47f805 |
return 44100;
|
|
Packit |
47f805 |
|
|
Packit |
47f805 |
return 48000;
|
|
Packit |
47f805 |
}
|
|
Packit |
47f805 |
|
|
Packit |
47f805 |
|
|
Packit |
47f805 |
unsigned int ACMStream::GetOutputSampleRate(int samples_per_sec, int bitrate, int channels)
|
|
Packit |
47f805 |
{
|
|
Packit |
47f805 |
if (bitrate==0)
|
|
Packit |
47f805 |
bitrate = (64000*channels)/8;
|
|
Packit |
47f805 |
|
|
Packit |
47f805 |
/// \todo pass through the same LAME routine
|
|
Packit |
47f805 |
unsigned int OutputFrequency;
|
|
Packit |
47f805 |
double compression_ratio = double(samples_per_sec * 16 * channels / (bitrate * 8));
|
|
Packit |
47f805 |
if (compression_ratio > 13.)
|
|
Packit |
47f805 |
OutputFrequency = map2MP3Frequency( (10. * bitrate * 8) / (16 * channels));
|
|
Packit |
47f805 |
else
|
|
Packit |
47f805 |
OutputFrequency = map2MP3Frequency( 0.97 * samples_per_sec );
|
|
Packit |
47f805 |
|
|
Packit |
47f805 |
return OutputFrequency;
|
|
Packit |
47f805 |
|
|
Packit |
47f805 |
}
|
|
Packit |
47f805 |
|