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

   1 // ****************************************************************************
   2 //
   3 //      CMiaDspCommObject.cpp
   4 //
   5 //              Implementation file for EchoGals generic driver Mia DSP
   6 //              interface class.
   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 "CEchoGals.h"
  32 #include "CMiaDspCommObject.h"
  33
  34 #include "MiaDSP.c"
  35
  36
  37 /****************************************************************************
  38
  39         Construction and destruction
  40
  41  ****************************************************************************/
  42
  43 //===========================================================================
  44 //
  45 // Constructor
  46 //
  47 //===========================================================================
  48
  49 CMiaDspCommObject::CMiaDspCommObject
  50 (
  51         PDWORD          pdwRegBase,                             // Virtual ptr to DSP registers
  52         PCOsSupport     pOsSupport
  53 ) : CDspCommObjectVmixer( pdwRegBase, pOsSupport )
  54 {
  55         strcpy( m_szCardName, "Mia" );
  56         m_pdwDspRegBase = pdwRegBase;           // Virtual addr DSP's register base
  57
  58         m_wNumPipesOut = 8;
  59         m_wNumPipesIn = 4;
  60         m_wNumBussesOut = 4;
  61         m_wNumBussesIn = 4;
  62         m_wFirstDigitalBusOut = 2;
  63         m_wFirstDigitalBusIn = 2;
  64
  65         m_fHasVmixer = TRUE;
  66
  67         if (MIA_MIDI_REV == pOsSupport->GetCardRev())
  68         {
  69                 m_wNumMidiOut = 1;                                      // # MIDI out channels
  70                 m_wNumMidiIn = 1;                                               // # MIDI in  channels
  71         }
  72
  73         m_pDspCommPage->dwSampleRate = SWAP( (DWORD) 44100 );
  74
  75         m_bHasASIC = FALSE;
  76
  77         m_pwDspCodeToLoad = pwMiaDSP;
  78
  79         m_byDigitalMode = DIGITAL_MODE_NONE;
  80
  81         //
  82         // Since this card has no ASIC, mark it as loaded so everything works OK
  83         //
  84         m_bASICLoaded = TRUE;
  85
  86 }       // CMiaDspCommObject::CMiaDspCommObject( DWORD dwPhysRegBase )
  87
  88
  89 //===========================================================================
  90 //
  91 // Destructor
  92 //
  93 //===========================================================================
  94
  95 CMiaDspCommObject::~CMiaDspCommObject()
  96 {
  97 }       // CMiaDspCommObject::~CMiaDspCommObject()
  98
  99
 100
 101
 102 /****************************************************************************
 103
 104         Hardware setup and config
 105
 106  ****************************************************************************/
 107
 108 //===========================================================================
 109 //
 110 //      Set the input clock
 111 //
 112 //===========================================================================
 113
 114 ECHOSTATUS CMiaDspCommObject::SetInputClock(WORD wClock)
 115 {
 116         DWORD   dwSampleRate = GetSampleRate();
 117
 118         ECHO_DEBUGPRINTF( ("CMiaDspCommObject::SetInputClock:\n") );
 119
 120         switch ( wClock )
 121         {
 122                 case ECHO_CLOCK_INTERNAL :
 123                 {
 124                         ECHO_DEBUGPRINTF( ( "\tSet Mia clock to INTERNAL\n" ) );
 125
 126                         // If the sample rate is out of range for some reason, set it
 127                         // to a reasonable value.  mattg
 128                         if ( ( dwSampleRate < 32000  ) ||
 129                              ( dwSampleRate > 96000 ) )
 130                         {
 131                                 dwSampleRate = 48000;
 132                         }
 133
 134                         break;
 135                 } // CLK_CLOCKININTERNAL
 136
 137                 case ECHO_CLOCK_SPDIF :
 138                 {
 139                         ECHO_DEBUGPRINTF( ( "\tSet Mia clock to SPDIF\n" ) );
 140                         break;
 141                 } // CLK_CLOCKINSPDIF
 142
 143                 default :
 144                         ECHO_DEBUGPRINTF(("Input clock 0x%x not supported for Mia\n",wClock));
 145                         ECHO_DEBUGBREAK();
 146                                 return ECHOSTATUS_CLOCK_NOT_SUPPORTED;
 147         }       // switch (wInputClock)
 148
 149         m_wInputClock = wClock;
 150
 151         SetSampleRate( dwSampleRate );
 152
 153         return ECHOSTATUS_OK;
 154 }       // ECHOSTATUS CMiaDspCommObject::SetInputClock
 155
 156
 157 //===========================================================================
 158 //
 159 // SetSampleRate
 160 //
 161 // Set the audio sample rate for Mia
 162 //
 163 //===========================================================================
 164
 165 DWORD CMiaDspCommObject::SetSampleRate( DWORD dwNewSampleRate )
 166 {
 167         //
 168         // Set the sample rate
 169         //
 170         DWORD dwControlReg = MIA_48000;
 171
 172         switch ( dwNewSampleRate )
 173         {
 174                 case 96000 :
 175                         dwControlReg = MIA_96000;
 176                         break;
 177
 178                 case 88200 :
 179                         dwControlReg = MIA_88200;
 180                         break;
 181
 182                 case 44100 :
 183                         dwControlReg = MIA_44100;
 184                         break;
 185
 186                 case 32000 :
 187                         dwControlReg = MIA_32000;
 188                         break;
 189         }
 190
 191         //
 192         // Override the clock setting if this Mia is set to S/PDIF clock
 193         //
 194         if ( ECHO_CLOCK_SPDIF == GetInputClock() )
 195                 dwControlReg |= MIA_SPDIF;
 196
 197         //
 198         //      Set the control register if it has changed
 199         //
 200         if (dwControlReg != GetControlRegister())
 201         {
 202                 if ( !WaitForHandshake() )
 203                         return 0xffffffff;
 204
 205                 //
 206                 // Set the values in the comm page; the dwSampleRate
 207                 // field isn't used by the DSP, but is read by the call
 208                 // to GetSampleRate below
 209                 //
 210                 m_pDspCommPage->dwSampleRate = SWAP( dwNewSampleRate );
 211                 SetControlRegister( dwControlReg );
 212
 213                 //
 214                 //      Poke the DSP
 215                 //
 216                 ClearHandshake();
 217                 SendVector( DSP_VC_UPDATE_CLOCKS );
 218         }
 219
 220         return GetSampleRate();
 221
 222 } // DWORD CMiaDspCommObject::SetSampleRate( DWORD dwNewSampleRate )
 223
 224 // **** CMiaDspCommObject.cpp ****