1 | /* $Id: waveindart.cpp,v 1.4 2002-05-28 14:09:25 sandervl Exp $ */
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2 |
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3 | /*
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4 | * Wave record class
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5 | *
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6 | * Copyright 2001 Sander van Leeuwen (sandervl@xs4all.nl)
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7 | *
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8 | *
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9 | * Project Odin Software License can be found in LICENSE.TXT
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10 | *
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11 | *
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12 | */
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13 |
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14 |
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15 | /****************************************************************************
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16 | * Includes *
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17 | ****************************************************************************/
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18 |
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19 |
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20 |
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21 | #define INCL_BASE
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22 | #define INCL_OS2MM
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23 | #include <os2wrap.h> //Odin32 OS/2 api wrappers
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24 | #include <os2mewrap.h> //Odin32 OS/2 MMPM/2 api wrappers
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25 | #include <stdlib.h>
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26 | #include <string.h>
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27 | #define OS2_ONLY
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28 | #include <win32api.h>
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29 | #include <wprocess.h>
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30 |
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31 | #include "misc.h"
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32 | #include "waveindart.h"
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33 | #include "initwinmm.h"
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34 |
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35 | #define DBG_LOCALLOG DBG_waveindart
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36 | #include "dbglocal.h"
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37 |
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38 | #ifndef min
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39 | #define min(a, b) ((a > b) ? b : a)
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40 | #endif
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41 |
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42 | #ifndef max
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43 | #define max(a, b) ((a > b) ? a : b)
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44 | #endif
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45 |
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46 | LONG APIENTRY WaveInHandler(ULONG ulStatus, PMCI_MIX_BUFFER pBuffer, ULONG ulFlags);
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47 |
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48 | //TODO: mulaw, alaw & adpcm
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49 | /******************************************************************************/
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50 | /******************************************************************************/
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51 | DartWaveIn::DartWaveIn(LPWAVEFORMATEX pwfx, ULONG fdwOpen, ULONG nCallback, ULONG dwInstance)
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52 | : WaveInOut(pwfx, fdwOpen, nCallback, dwInstance)
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53 | {
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54 | MCI_GENERIC_PARMS GenericParms;
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55 | MCI_AMP_OPEN_PARMS AmpOpenParms;
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56 | APIRET rc;
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57 |
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58 | fOverrun = FALSE;
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59 | fMixerSetup = FALSE;
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60 |
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61 | MixBuffer = (MCI_MIX_BUFFER *)malloc(PREFILLBUF_DART_REC*sizeof(MCI_MIX_BUFFER));
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62 | MixSetupParms = (MCI_MIXSETUP_PARMS *)malloc(sizeof(MCI_MIXSETUP_PARMS));
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63 | BufferParms = (MCI_BUFFER_PARMS *)malloc(sizeof(MCI_BUFFER_PARMS));
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64 | if(!MixBuffer || !MixSetupParms || !BufferParms) {
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65 | dprintf(("ERROR: malloc failed!!"));
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66 | ulError = MMSYSERR_NOMEM;
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67 | return;
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68 | }
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69 |
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70 | ulBufSize = DART_BUFSIZE_REC;
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71 |
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72 | dprintf(("waveInOpen: samplerate %d, numChan %d bps %d (%d), format %x", SampleRate, nChannels, BitsPerSample, pwfx->nBlockAlign, pwfx->wFormatTag));
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73 | // Setup the open structure, pass the playlist and tell MCI_OPEN to use it
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74 | memset(&AmpOpenParms,0,sizeof(AmpOpenParms));
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75 |
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76 | AmpOpenParms.usDeviceID = ( USHORT ) 0;
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77 | AmpOpenParms.pszDeviceType = ( PSZ ) MCI_DEVTYPE_AUDIO_AMPMIX;
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78 |
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79 | rc = mymciSendCommand(0, MCI_OPEN,
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80 | MCI_WAIT | MCI_OPEN_TYPE_ID | MCI_OPEN_SHAREABLE,
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81 | (PVOID) &AmpOpenParms,
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82 | 0);
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83 | DeviceId = AmpOpenParms.usDeviceID;
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84 | if(rc) {
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85 | dprintf(("MCI_OPEN failed\n"));
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86 | mciError(rc);
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87 | ulError = MMSYSERR_NODRIVER;
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88 | }
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89 | if(rc == 0) {
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90 | //Grab exclusive rights to device instance (NOT entire device)
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91 | GenericParms.hwndCallback = 0; //Not needed, so set to 0
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92 | rc = mymciSendCommand(DeviceId, MCI_ACQUIREDEVICE, MCI_EXCLUSIVE_INSTANCE,
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93 | (PVOID)&GenericParms, 0);
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94 | if(rc) {
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95 | dprintf(("MCI_ACQUIREDEVICE failed\n"));
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96 | mciError(rc);
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97 | ulError = MMSYSERR_NOTENABLED;
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98 | }
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99 | }
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100 |
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101 | if(!ulError)
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102 | callback(WIM_OPEN, 0, 0);
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103 | }
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104 | /******************************************************************************/
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105 | /******************************************************************************/
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106 | DartWaveIn::~DartWaveIn()
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107 | {
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108 | MCI_GENERIC_PARMS GenericParms;
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109 |
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110 | State = STATE_STOPPED;
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111 |
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112 | if(!ulError)
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113 | {
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114 | // Generic parameters
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115 | GenericParms.hwndCallback = 0; //hwndFrame
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116 |
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117 | // Stop recording.
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118 | mymciSendCommand(DeviceId, MCI_STOP,MCI_WAIT, (PVOID)&GenericParms,0);
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119 |
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120 | mymciSendCommand(DeviceId,
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121 | MCI_BUFFER,
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122 | MCI_WAIT | MCI_DEALLOCATE_MEMORY,
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123 | (PVOID)&BufferParms,
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124 | 0);
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125 |
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126 | // Generic parameters
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127 | GenericParms.hwndCallback = 0; //hwndFrame
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128 |
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129 | // Close the device
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130 | mymciSendCommand(DeviceId, MCI_CLOSE, MCI_WAIT, (PVOID)&GenericParms, 0);
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131 | }
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132 | if(!ulError)
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133 | {
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134 | callback(WIM_CLOSE, 0, 0);
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135 | }
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136 |
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137 | if(MixBuffer)
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138 | free(MixBuffer);
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139 | if(MixSetupParms)
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140 | free(MixSetupParms);
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141 | if(BufferParms)
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142 | free(BufferParms);
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143 | }
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144 | /******************************************************************************/
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145 | /******************************************************************************/
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146 | /******************************************************************************/
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147 | /******************************************************************************/
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148 | MMRESULT DartWaveIn::start()
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149 | {
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150 | MCI_GENERIC_PARMS GenericParms = {0};
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151 | MCI_AMP_OPEN_PARMS AmpOpenParms;
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152 | MCI_CONNECTOR_PARMS ConnectorParms;
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153 | MCI_AMP_SET_PARMS AmpSetParms ;
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154 | APIRET rc;
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155 | int i, curbuf, buflength;
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156 |
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157 | dprintf(("DartWaveIn::start"));
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158 | if(State == STATE_RECORDING)
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159 | return(MMSYSERR_NOERROR);
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160 |
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161 | if(fMixerSetup == FALSE)
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162 | {
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163 | dprintf(("device acquired\n"));
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164 | /* Set the MixSetupParms data structure to match the loaded file.
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165 | * This is a global that is used to setup the mixer.
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166 | */
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167 | memset(MixSetupParms, 0, sizeof( MCI_MIXSETUP_PARMS ) );
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168 |
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169 | MixSetupParms->ulBitsPerSample = BitsPerSample;
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170 | MixSetupParms->ulSamplesPerSec = SampleRate;
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171 | MixSetupParms->ulFormatTag = MCI_WAVE_FORMAT_PCM;
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172 | MixSetupParms->ulChannels = nChannels;
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173 |
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174 | dprintf(("bps %d, sps %d chan %d\n", BitsPerSample, SampleRate, nChannels));
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175 |
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176 | /* Setup the mixer for recording of wave data
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177 | */
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178 | MixSetupParms->ulFormatMode = MCI_RECORD;
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179 | MixSetupParms->ulDeviceType = MCI_DEVTYPE_WAVEFORM_AUDIO;
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180 | MixSetupParms->pmixEvent = WaveInHandler;
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181 |
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182 | rc = mymciSendCommand(DeviceId,
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183 | MCI_MIXSETUP,
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184 | MCI_WAIT | MCI_MIXSETUP_INIT,
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185 | (PVOID)MixSetupParms,
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186 | 0);
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187 |
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188 | if ( rc != MCIERR_SUCCESS ) {
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189 | mciError(rc);
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190 | mymciSendCommand(DeviceId, MCI_RELEASEDEVICE, MCI_WAIT,
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191 | (PVOID)&GenericParms, 0);
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192 | return(MMSYSERR_NOTSUPPORTED);
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193 | }
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194 |
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195 | /*
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196 | * Set up the BufferParms data structure and allocate
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197 | * device buffers from the Amp-Mixer
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198 | */
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199 |
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200 | int consumerate = getAvgBytesPerSecond();
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201 | //SvL: Recording usually isn't as sensitive to timing as playback
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202 | // Dividing by 8 instead of 32 here. Change if necessary.
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203 | int minbufsize = consumerate/8;
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204 |
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205 | LPWAVEHDR pwh = wavehdr;
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206 | if(pwh) {
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207 | dprintf(("mix setup %d, %d\n", pwh->dwBufferLength, pwh->dwBufferLength));
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208 |
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209 | ulBufSize = pwh->dwBufferLength/2;
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210 | if(ulBufSize < minbufsize) {
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211 | dprintf(("set buffer size to %d bytes (org size = %d)", minbufsize, pwh->dwBufferLength));
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212 | ulBufSize = minbufsize;
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213 | }
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214 | }
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215 | else ulBufSize = minbufsize;
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216 |
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217 | MixSetupParms->ulBufferSize = ulBufSize;
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218 |
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219 | BufferParms->ulNumBuffers = PREFILLBUF_DART_REC;
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220 | BufferParms->ulBufferSize = MixSetupParms->ulBufferSize;
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221 | BufferParms->pBufList = MixBuffer;
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222 |
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223 | for(i=0;i<PREFILLBUF_DART_REC;i++) {
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224 | MixBuffer[i].ulUserParm = (ULONG)this;
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225 | }
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226 |
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227 | rc = mymciSendCommand(DeviceId,
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228 | MCI_BUFFER,
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229 | MCI_WAIT | MCI_ALLOCATE_MEMORY,
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230 | (PVOID)BufferParms,
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231 | 0);
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232 |
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233 | if(ULONG_LOWD(rc) != MCIERR_SUCCESS) {
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234 | mciError(rc);
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235 | mymciSendCommand(DeviceId, MCI_RELEASEDEVICE, MCI_WAIT,
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236 | (PVOID)&GenericParms, 0);
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237 | return(MMSYSERR_NOTSUPPORTED);
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238 | }
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239 |
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240 | //TODO: don't do this here. Select line or mic depending on aux settings
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241 | //(until we really support the mixer extensions anyway)
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242 | /* Set the connector to 'line in' */
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243 | memset( &ConnectorParms, '\0', sizeof( MCI_CONNECTOR_PARMS ) );
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244 | ConnectorParms.ulConnectorType = MCI_LINE_IN_CONNECTOR;
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245 | rc = mymciSendCommand( DeviceId,
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246 | MCI_CONNECTOR,
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247 | MCI_WAIT |
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248 | MCI_ENABLE_CONNECTOR |
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249 | MCI_CONNECTOR_TYPE,
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250 | ( PVOID ) &ConnectorParms,
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251 | 0 );
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252 |
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253 | /* Allow the user to hear what is being recorded
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254 | * by turning the monitor on
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255 | */
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256 | memset( &AmpSetParms, '\0', sizeof( MCI_AMP_SET_PARMS ) );
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257 | AmpSetParms.ulItem = MCI_AMP_SET_MONITOR;
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258 | rc = mymciSendCommand(DeviceId,
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259 | MCI_SET,
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260 | MCI_WAIT | MCI_SET_ON | MCI_SET_ITEM,
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261 | ( PVOID ) &AmpSetParms,
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262 | 0 );
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263 |
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264 | wmutex.enter();
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265 | fMixerSetup = TRUE;
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266 | }
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267 |
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268 | for(i=0;i<PREFILLBUF_DART_REC;i++) {
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269 | memset(MixBuffer[i].pBuffer, 0, MixBuffer[i].ulBufferLength);
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270 | }
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271 | dprintf(("Dart opened, bufsize = %d\n", MixBuffer[0].ulBufferLength));
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272 |
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273 | dprintf(("MixSetupParms = %X\n", MixSetupParms));
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274 | State = STATE_RECORDING;
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275 | fOverrun = FALSE;
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276 | wmutex.leave();
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277 |
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278 | dprintf(("Dart recording"));
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279 |
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280 | // Start recording.
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281 | USHORT selTIB = GetFS(); // save current FS selector
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282 | MixSetupParms->pmixRead( MixSetupParms->ulMixHandle,
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283 | &MixBuffer[0],
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284 | PREFILLBUF_DART_REC);
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285 | SetFS(selTIB); // switch back to the saved FS selector
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286 |
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287 | return(MMSYSERR_NOERROR);
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288 | }
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289 | /******************************************************************************/
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290 | /******************************************************************************/
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291 | MMRESULT DartWaveIn::stop()
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292 | {
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293 | MCI_GENERIC_PARMS Params;
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294 |
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295 | wmutex.enter();
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296 | if(State != STATE_RECORDING) {
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297 | State = STATE_STOPPED;
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298 | wmutex.leave();
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299 | return(MMSYSERR_NOERROR);
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300 | }
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301 |
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302 | State = STATE_STOPPED;
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303 | wmutex.leave();
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304 |
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305 | memset(&Params, 0, sizeof(Params));
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306 |
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307 | // Stop recording.
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308 | mymciSendCommand(DeviceId, MCI_STOP, MCI_WAIT, (PVOID)&Params, 0);
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309 |
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310 | return(MMSYSERR_NOERROR);
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311 | }
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312 | /******************************************************************************/
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313 | /******************************************************************************/
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314 | MMRESULT DartWaveIn::reset()
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315 | {
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316 | MCI_GENERIC_PARMS Params;
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317 | LPWAVEHDR tmpwavehdr;
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318 |
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319 | dprintf(("DartWaveIn::reset %s", (State == STATE_RECORDING) ? "recording" : "stopped"));
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320 | if(State != STATE_RECORDING)
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321 | return(MMSYSERR_HANDLEBUSY);
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322 |
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323 | memset(&Params, 0, sizeof(Params));
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324 |
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325 | // Stop recording
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326 | mymciSendCommand(DeviceId, MCI_STOP, MCI_WAIT, (PVOID)&Params, 0);
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327 |
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328 | wmutex.enter();
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329 | while(wavehdr)
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330 | {
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331 | wavehdr->dwFlags |= WHDR_DONE;
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332 | wavehdr->dwFlags &= ~WHDR_INQUEUE;
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333 | tmpwavehdr = wavehdr;
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334 | wavehdr = wavehdr->lpNext;
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335 | tmpwavehdr->lpNext = NULL;
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336 |
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337 | wmutex.leave();
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338 |
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339 | callback(WIM_DATA, (ULONG)tmpwavehdr, 0);
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340 |
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341 | wmutex.enter();
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342 | }
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343 | wavehdr = NULL;
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344 | State = STATE_STOPPED;
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345 | fOverrun = FALSE;
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346 |
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347 | wmutex.leave();
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348 | return(MMSYSERR_NOERROR);
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349 | }
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350 | /******************************************************************************/
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351 | /******************************************************************************/
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352 | MMRESULT DartWaveIn::addBuffer(LPWAVEHDR pwh, UINT cbwh)
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353 | {
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354 | int i;
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355 |
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356 | wmutex.enter();
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357 | pwh->lpNext = NULL;
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358 | pwh->dwBytesRecorded = 0;
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359 | if(wavehdr) {
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360 | WAVEHDR *chdr = wavehdr;
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361 | while(chdr->lpNext) {
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362 | chdr = chdr->lpNext;
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363 | }
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364 | chdr->lpNext = pwh;
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365 | }
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366 | else wavehdr = pwh;
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367 | wmutex.leave();
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368 |
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369 | return(MMSYSERR_NOERROR);
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370 | }
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371 | /******************************************************************************/
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372 | /******************************************************************************/
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373 | ULONG DartWaveIn::getPosition()
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374 | {
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375 | MCI_STATUS_PARMS mciStatus = {0};
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376 | ULONG rc, nrbytes;
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377 |
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378 | mciStatus.ulItem = MCI_STATUS_POSITION;
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379 | rc = mymciSendCommand(DeviceId, MCI_STATUS, MCI_STATUS_ITEM|MCI_WAIT, (PVOID)&mciStatus, 0);
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380 | if((rc & 0xFFFF) == MCIERR_SUCCESS) {
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381 | nrbytes = (mciStatus.ulReturn * (getAvgBytesPerSecond()/1000));
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382 | return nrbytes;;
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383 | }
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384 | mciError(rc);
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385 | return 0xFFFFFFFF;
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386 | }
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387 | /******************************************************************************/
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388 | /******************************************************************************/
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389 | int DartWaveIn::getNumDevices()
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390 | {
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391 | MCI_GENERIC_PARMS GenericParms;
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392 | MCI_AMP_OPEN_PARMS AmpOpenParms;
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393 | APIRET rc;
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394 |
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395 | // Setup the open structure, pass the playlist and tell MCI_OPEN to use it
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396 | memset(&AmpOpenParms,0,sizeof(AmpOpenParms));
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397 |
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398 | AmpOpenParms.usDeviceID = ( USHORT ) 0;
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399 | AmpOpenParms.pszDeviceType = ( PSZ ) MCI_DEVTYPE_AUDIO_AMPMIX;
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400 |
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401 | rc = mymciSendCommand(0, MCI_OPEN,
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402 | MCI_WAIT | MCI_OPEN_TYPE_ID | MCI_OPEN_SHAREABLE,
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403 | (PVOID) &AmpOpenParms,
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404 | 0);
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405 |
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406 | if(rc) {
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407 | return 0; //no devices present
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408 | }
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409 |
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410 | // Generic parameters
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411 | GenericParms.hwndCallback = 0; //hwndFrame
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412 |
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413 | // Close the device
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414 | mymciSendCommand(AmpOpenParms.usDeviceID, MCI_CLOSE, MCI_WAIT, (PVOID)&GenericParms, 0);
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415 |
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416 | return 1;
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417 | }
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418 | /******************************************************************************/
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419 | /******************************************************************************/
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420 | BOOL DartWaveIn::queryFormat(ULONG formatTag, ULONG nChannels,
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421 | ULONG nSamplesPerSec, ULONG wBitsPerSample)
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422 | {
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423 | MCI_WAVE_GETDEVCAPS_PARMS mciAudioCaps;
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424 | MCI_GENERIC_PARMS GenericParms;
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425 | MCI_OPEN_PARMS mciOpenParms; /* open parms for MCI_OPEN */
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426 | int i, freqbits = 0;
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427 | ULONG rc, DeviceId;
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428 | BOOL winrc;
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429 |
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430 | dprintf(("DartWaveIn::queryFormat %x srate=%d, nchan=%d, bps=%d", formatTag, nSamplesPerSec, nChannels, wBitsPerSample));
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431 |
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432 | memset(&mciOpenParms, /* Object to fill with zeros. */
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433 | 0, /* Value to place into the object. */
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434 | sizeof( mciOpenParms ) ); /* How many zero's to use. */
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435 |
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436 | mciOpenParms.pszDeviceType = (PSZ)MCI_DEVTYPE_WAVEFORM_AUDIO;
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437 |
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438 | rc = mymciSendCommand( (USHORT) 0,
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439 | MCI_OPEN,
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440 | MCI_WAIT | MCI_OPEN_TYPE_ID,
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441 | (PVOID) &mciOpenParms,
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442 | 0);
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443 | if((rc & 0xFFFF) != MCIERR_SUCCESS) {
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444 | mciError(rc);
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445 | return(FALSE);
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446 | }
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447 | DeviceId = mciOpenParms.usDeviceID;
|
---|
448 |
|
---|
449 | memset( &mciAudioCaps , 0, sizeof(MCI_WAVE_GETDEVCAPS_PARMS));
|
---|
450 |
|
---|
451 | mciAudioCaps.ulBitsPerSample = wBitsPerSample;
|
---|
452 | mciAudioCaps.ulFormatTag = DATATYPE_WAVEFORM;
|
---|
453 | mciAudioCaps.ulSamplesPerSec = nSamplesPerSec;
|
---|
454 | mciAudioCaps.ulChannels = nChannels;
|
---|
455 | mciAudioCaps.ulFormatMode = MCI_RECORD;
|
---|
456 | mciAudioCaps.ulItem = MCI_GETDEVCAPS_WAVE_FORMAT;
|
---|
457 |
|
---|
458 | rc = mymciSendCommand(DeviceId, /* Device ID */
|
---|
459 | MCI_GETDEVCAPS,
|
---|
460 | MCI_WAIT | MCI_GETDEVCAPS_EXTENDED | MCI_GETDEVCAPS_ITEM,
|
---|
461 | (PVOID) &mciAudioCaps,
|
---|
462 | 0);
|
---|
463 | if((rc & 0xFFFF) != MCIERR_SUCCESS) {
|
---|
464 | mciError(rc);
|
---|
465 | winrc = FALSE;
|
---|
466 | }
|
---|
467 | else winrc = TRUE;
|
---|
468 |
|
---|
469 | // Close the device
|
---|
470 | mymciSendCommand(DeviceId,MCI_CLOSE,MCI_WAIT,(PVOID)&GenericParms,0);
|
---|
471 | return(winrc);
|
---|
472 | }
|
---|
473 | /******************************************************************************/
|
---|
474 | /******************************************************************************/
|
---|
475 | void DartWaveIn::mciError(ULONG ulError)
|
---|
476 | {
|
---|
477 | #ifdef DEBUG
|
---|
478 | char szError[256] = "";
|
---|
479 |
|
---|
480 | mymciGetErrorString(ulError, szError, sizeof(szError));
|
---|
481 | dprintf(("WINMM: DartWaveIn: %s\n", szError));
|
---|
482 | #endif
|
---|
483 | }
|
---|
484 | /******************************************************************************/
|
---|
485 | //Simple implementation of recording. We fill up buffers queued by the application
|
---|
486 | //until we run out of data or buffers. If we run out of buffers, the recorded data
|
---|
487 | //is thrown away. We will continue when when the applications adds more buffers.
|
---|
488 | /******************************************************************************/
|
---|
489 | void DartWaveIn::handler(ULONG ulStatus, PMCI_MIX_BUFFER pBuffer, ULONG ulFlags)
|
---|
490 | {
|
---|
491 | ULONG buflength, bufpos, bytestocopy;
|
---|
492 |
|
---|
493 | dprintf2(("WINMM: DartWaveIn handler %x\n", pBuffer));
|
---|
494 | if(ulFlags == MIX_STREAM_ERROR) {
|
---|
495 | if(ulStatus == ERROR_DEVICE_OVERRUN) {
|
---|
496 | dprintf(("WINMM: ERROR: WaveIn handler ERROR_DEVICE_OVERRUN!\n"));
|
---|
497 | if(State == STATE_RECORDING) {
|
---|
498 | fOverrun = TRUE;
|
---|
499 | stop(); //out of buffers, so stop playback
|
---|
500 | }
|
---|
501 | return;
|
---|
502 | }
|
---|
503 | dprintf(("WINMM: WaveIn handler, Unknown error %X\n", ulStatus));
|
---|
504 | return;
|
---|
505 | }
|
---|
506 | wmutex.enter();
|
---|
507 |
|
---|
508 | if(wavehdr == NULL) {
|
---|
509 | wmutex.leave();
|
---|
510 | //last buffer recorded -> no new ones -> overrun
|
---|
511 | //Windows doesn't care -> just continue
|
---|
512 | dprintf(("WINMM: WARNING: WaveIn handler OVERRUN!\n"));
|
---|
513 | return;
|
---|
514 | }
|
---|
515 |
|
---|
516 | buflength = pBuffer->ulBufferLength;
|
---|
517 | bufpos = 0;
|
---|
518 | while(buflength) {
|
---|
519 | if(wavehdr) {
|
---|
520 | dprintf2(("WINMM: DartWaveIn handler: bytes recorded %d, buffer length %d, room %d", buflength, wavehdr->dwBufferLength, wavehdr->dwBytesRecorded));
|
---|
521 | bytestocopy = min(buflength, wavehdr->dwBufferLength - wavehdr->dwBytesRecorded);
|
---|
522 | if(bytestocopy) {
|
---|
523 | memcpy(wavehdr->lpData + wavehdr->dwBytesRecorded, (char *)pBuffer->pBuffer + bufpos, bytestocopy);
|
---|
524 | }
|
---|
525 | else DebugInt3(); //should never happen
|
---|
526 |
|
---|
527 | bufpos += bytestocopy;
|
---|
528 | wavehdr->dwBytesRecorded += bytestocopy;
|
---|
529 | buflength -= bytestocopy;
|
---|
530 |
|
---|
531 | if(wavehdr->dwBytesRecorded == wavehdr->dwBufferLength)
|
---|
532 | {
|
---|
533 | WAVEHDR *whdr = wavehdr;
|
---|
534 |
|
---|
535 | dprintf2(("WINMM: DartWaveIn handler buf %X done\n", whdr));
|
---|
536 | whdr->dwFlags |= WHDR_DONE;
|
---|
537 | whdr->dwFlags &= ~WHDR_INQUEUE;
|
---|
538 |
|
---|
539 | wavehdr = whdr->lpNext;
|
---|
540 | whdr->lpNext = NULL;
|
---|
541 | wmutex.leave();
|
---|
542 |
|
---|
543 | callback(WIM_DATA, (ULONG)whdr, whdr->dwBytesRecorded);
|
---|
544 |
|
---|
545 | wmutex.enter();
|
---|
546 | }
|
---|
547 | }
|
---|
548 | else break;
|
---|
549 | }
|
---|
550 | wmutex.leave();
|
---|
551 |
|
---|
552 | //Transfer buffer to DART
|
---|
553 | // MCI_MIXSETUP_PARMS->pMixWrite does alter FS: selector!
|
---|
554 | USHORT selTIB = GetFS(); // save current FS selector
|
---|
555 | MixSetupParms->pmixRead(MixSetupParms->ulMixHandle, pBuffer, 1);
|
---|
556 | SetFS(selTIB); // switch back to the saved FS selector
|
---|
557 | }
|
---|
558 | /******************************************************************************/
|
---|
559 | /******************************************************************************/
|
---|
560 | LONG APIENTRY WaveInHandler(ULONG ulStatus,
|
---|
561 | PMCI_MIX_BUFFER pBuffer,
|
---|
562 | ULONG ulFlags)
|
---|
563 | {
|
---|
564 | DartWaveIn *dwave;
|
---|
565 |
|
---|
566 | if(pBuffer && pBuffer->ulUserParm)
|
---|
567 | {
|
---|
568 | dwave = (DartWaveIn *)pBuffer->ulUserParm;
|
---|
569 | dwave->handler(ulStatus, pBuffer, ulFlags);
|
---|
570 | }
|
---|
571 | return(TRUE);
|
---|
572 | }
|
---|
573 | /******************************************************************************/
|
---|
574 | /******************************************************************************/
|
---|
575 |
|
---|