src/add-ons/kernel/drivers/audio/echo/generic/CIndigoDJ.cpp

   1 // ****************************************************************************
   2 //
   3 //              CIndigoDJ.cpp
   4 //
   5 //              Implementation file for the CIndigoDJ driver class.
   6 //              Set editor tabs to 3 for your viewing pleasure.
   7 //
   8 // ----------------------------------------------------------------------------
   9 //
  10 // This file is part of Echo Digital Audio's generic driver library.
  11 // Copyright Echo Digital Audio Corporation (c) 1998 - 2005
  12 // All rights reserved
  13 // www.echoaudio.com
  14 //
  15 // This library is free software; you can redistribute it and/or
  16 // modify it under the terms of the GNU Lesser General Public
  17 // License as published by the Free Software Foundation; either
  18 // version 2.1 of the License, or (at your option) any later version.
  19 //
  20 // This library is distributed in the hope that it will be useful,
  21 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  22 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  23 // Lesser General Public License for more details.
  24 //
  25 // You should have received a copy of the GNU Lesser General Public
  26 // License along with this library; if not, write to the Free Software
  27 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  28 //
  29 // ****************************************************************************
  30
  31 #include "CIndigoDJ.h"
  32
  33 #define INDIGO_DJ_OUTPUT_LATENCY_SINGLE_SPEED   44
  34 #define INDIGO_DJ_OUTPUT_LATENCY_DOUBLE_SPEED   37
  35
  36
  37 /****************************************************************************
  38
  39         Construction and destruction
  40
  41  ****************************************************************************/
  42
  43 //===========================================================================
  44 //
  45 // Overload new & delete so memory for this object is allocated
  46 //      from non-paged memory.
  47 //
  48 //===========================================================================
  49
  50 PVOID CIndigoDJ::operator new( size_t Size )
  51 {
  52         PVOID           pMemory;
  53         ECHOSTATUS      Status;
  54
  55         Status = OsAllocateNonPaged(Size,&pMemory);
  56
  57         if ( (ECHOSTATUS_OK != Status) || (NULL == pMemory ))
  58         {
  59                 ECHO_DEBUGPRINTF(("CIndigoDJ::operator new - memory allocation failed\n"));
  60
  61                 pMemory = NULL;
  62         }
  63         else
  64         {
  65                 memset( pMemory, 0, Size );
  66         }
  67
  68         return pMemory;
  69
  70 }       // PVOID CIndigoDJ::operator new( size_t Size )
  71
  72
  73 VOID  CIndigoDJ::operator delete( PVOID pVoid )
  74 {
  75         if ( ECHOSTATUS_OK != OsFreeNonPaged( pVoid ) )
  76         {
  77                 ECHO_DEBUGPRINTF(("CIndigoDJ::operator delete memory free failed\n"));
  78         }
  79 }       // VOID CIndigoDJ::operator delete( PVOID pVoid )
  80
  81
  82
  83 //===========================================================================
  84 //
  85 // Constructor and destructor
  86 //
  87 //===========================================================================
  88
  89 CIndigoDJ::CIndigoDJ( PCOsSupport pOsSupport )
  90           : CIndigo( pOsSupport )
  91 {
  92         ECHO_DEBUGPRINTF( ( "CIndigoDJ::CIndigoDJ() is born!\n" ) );
  93 }
  94
  95 CIndigoDJ::~CIndigoDJ()
  96 {
  97         ECHO_DEBUGPRINTF( ( "CIndigoDJ::~CIndigoDJ() is toast!\n" ) );
  98 }
  99
 100
 101
 102 //===========================================================================
 103 //
 104 // Every card has an InitHw method
 105 //
 106 //===========================================================================
 107
 108 ECHOSTATUS CIndigoDJ::InitHw()
 109 {
 110         ECHOSTATUS      Status;
 111
 112         //
 113         // Call the base method
 114         //
 115         if ( ECHOSTATUS_OK != ( Status = CEchoGals::InitHw() ) )
 116                 return Status;
 117
 118         //
 119         // Create the DSP comm object
 120         //
 121         m_pDspCommObject = new CIndigoDJDspCommObject( (PDWORD) m_pvSharedMemory,
 122                                                                                                                                  m_pOsSupport );
 123         if (NULL == m_pDspCommObject)
 124         {
 125                 ECHO_DEBUGPRINTF(("CIndigoDJ::InitHw - could not create DSP comm object\n"));
 126                 return ECHOSTATUS_NO_MEM;
 127         }
 128
 129         //
 130         // Load the DSP
 131         //
 132         GetDspCommObject()->LoadFirmware();
 133         if ( GetDspCommObject()->IsBoardBad() )
 134                 return ECHOSTATUS_DSP_DEAD;
 135
 136         //
 137         // Do flags
 138         //
 139         m_wFlags &= ~ECHOGALS_FLAG_BADBOARD;
 140         m_wFlags |= ECHOGALS_ROFLAG_SUPER_INTERLEAVE_OK;
 141
 142         //
 143         //      Must call this here after DSP is init to
 144         //      init gains and mutes
 145         //
 146         Status = InitLineLevels();
 147         if ( ECHOSTATUS_OK != Status )
 148                 return Status;
 149
 150         //
 151         //      Get default sample rate from DSP
 152         //
 153         m_dwSampleRate = GetDspCommObject()->GetSampleRate();
 154
 155         ECHO_DEBUGPRINTF( ( "CIndigo::InitHw()\n" ) );
 156         return Status;
 157
 158 }       // ECHOSTATUS CIndigo::InitHw()
 159
 160
 161 //===========================================================================
 162 //
 163 // GetAudioLatency - returns the latency for a single pipe
 164 //
 165 //===========================================================================
 166
 167 void CIndigoDJ::GetAudioLatency(ECHO_AUDIO_LATENCY *pLatency)
 168 {
 169         DWORD dwLatency;
 170         DWORD dwSampleRate;
 171
 172         dwSampleRate = GetDspCommObject()->GetSampleRate();
 173         if (FALSE == pLatency->wIsInput)
 174         {
 175                 //
 176                 // The latency depends on the current sample rate
 177                 //
 178                 if (dwSampleRate < 50000)
 179                         dwLatency = INDIGO_DJ_OUTPUT_LATENCY_SINGLE_SPEED;
 180                 else
 181                         dwLatency = INDIGO_DJ_OUTPUT_LATENCY_DOUBLE_SPEED;
 182         }
 183         else
 184         {
 185                 //
 186                 // Inputs?  What inputs?
 187                 //
 188                 dwLatency = 0;
 189         }
 190
 191         pLatency->dwLatency = dwLatency;
 192
 193 }       // GetAudioLatency
 194
 195
 196 // *** CIndigoDJ.cpp ***