ntddk/src/mmedia/sndblst/driver/mvmix.c - view

File: [WindowsNT SDKs] / ntddk / src / mmedia / sndblst / driver / mvmix.c
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Thu Aug 9 18:31:12 2018 UTC (7 years, 9 months ago) by root
Branches: msft, MAIN
CVS tags: ntddk-nov-1993, HEAD

Microsoft Windows NT Build 511 (DDK SDK) 11-01-1993

/*++ Copyright (c) 1992 Media Vision, Inc Module Name: mvmix.c Abstract: This module contains code for controlling the Media Vision Mixer hardware. Media Vision has used only two software-controllable mixer chips so far. The MV 508 is used on the PAS 16 only. All other chips use the National part XXXX. Programming the Nationial mixer chip is VOODOO BLACK MAGIC and will be very slow under NT. Environment: Kernel mode Revision History: 27-Sep-1992 Initial revision --*/ #include <sound.h> void SetEq(PFOUNDINFO pFI, USHORT P_output, USHORT P_EQtype,USHORT P_level); void SetEqMode(PFOUNDINFO pFI, USHORT P_loudness, USHORT P_enhance); void NationalMix(PFOUNDINFO pFI, USHORT wData); void NationalVolume(PFOUNDINFO pFI, USHORT wVolume,UCHAR wVolumeRegister); ULONG Scale100ToFFFF(USHORT wVal); BYTE ScaleFFFFTo100(USHORT wVal); #ifdef ALLOC_PRAGMA #pragma alloc_text(init,SetOutput) #pragma alloc_text(init,SetFilter) #endif // //-------------------------========================--------------------------- //------------------------====< DATA SECTION >====--------------------------- //-------------------------========================--------------------------- // // // These variables are DMA/Buffer control variables // // // These variables mirror the hardware state // UCHAR audiomixr= SERIAL_MIX_CLOCK+SERIAL_MIX_DUALFM ; UCHAR audiofilt; // B8A Audio Filter Control Register // // a linear table of filter values - from mute to high // UCHAR FilterTable[]= { 0x00, // 000000b mute - goes to PC speaker 0x24, // 100100b 20hz to 2.9khz 0x39, // 111001b 20hz to 5.9khz 0x31, // 110001b 20hz to 8.9khz 0x29, // 101001b 20hz to 11.9khz 0x22, // 100010b 20hz to 15.9khz 0x21, // 100001b 20hz to 17.8khz }; // //Mixer settings (0 - 12) // UCHAR mixersettings[]= { 0x00, // level 0 0x20, // level 1 0x10, // level 2 0x08, // level 3 0x04, // level 4 0x02, // level 5 0x12, // level 6 0x2A, // level 7 0x16, // level 8 0x01, // level 9 0x29, // level A 0x1D, // level B 0x2F // level C }; UCHAR SampleFilterSetting=0; // default setting based on sample rate // // Volume settings (0 - 12) // UCHAR volsettings[]= { 0x00, // level 0 0x60, // level 1 0x50, // level 2 0x48, // level 3 0x44, // level 4 0x42, // level 5 0x52, // level 6 0x6A, // level 7 0x56, // level 8 0x41, // level 9 0x69, // level A 0x5D, // level B 0x6F // level C }; // // Xlat table lookup= 0-31 // result= 0-12 // UCHAR Scale32To12[]= { 0 , 1, 1, 2, 2, 3, 3, 3, // 0- 7 4 , 4, 4, 5, 5, 5, 6, 6, // 8-15 6 , 7, 7, 7, 8, 8, 8, 9, // 16-23 9 , 9,10,10,11,11,12,12 // 24-31 }; UCHAR Scale64To40[]= { 0 , 1, 2, 3, 4, 5, 6, 7, // 0- 7 8 , 8, 9,10,10,11,12,12, // 8-15 13,14,14,15,16,16,17,18, // 16-23 18,19,20,20,21,22,22,23, // 24-31 24,24,25,26,26,27,28,28, // 32-39 29,29,30,30,31,31,32,32, // 40-47 32,33,33,34,34,35,35,35, // 48-55 36,36,37,37,38,38,39,40 // 56-63 }; UCHAR BassTreb32to13[]= { 0 , 1, 1, 2, 2, 3, 3, 3, // 0- 7 4 , 4, 4, 5, 5, 5, 6, 6, // 8-15 6 , 7, 7, 7, 8, 8, 8, 9, // 16-23 9 , 9,10,10,11,11,12,12 // 24-31 }; /*\ ;---|*|-=< void SetInput (USHORT P_input_num, USHORT P_volume_lvl,USHORT P_channel, ;---|*| USHORT P_crossover,USHORT P_output_num ) ;---|*| ;---|*| Set the selected channel within the Input Mixer ;---|*| ;---|*| Entry Conditions: ;---|*| P_input_num = Input # (0-6 for serial mixer, 0-7 for 508) ;---|*| P_volume_lvl = volume level (0-FFFF) ;---|*| P_channel = LEFT, RIGHT or BOTH ;---|*| P_crossover = Crossover Info (required onlby for 508) ;---|*| P_output_num = Output # (0-1 for either mixer) ;---|*| ;---|*| Exit Conditions: ;---|*| None ;---|*| ; \*/ void SetInput (PFOUNDINFO pFI, UCHAR P_input_num, USHORT P_volume_lvl,USHORT P_channel, USHORT P_crossover,UCHAR P_output_num ) { UCHAR bTemp,bTemp1; P_volume_lvl>>=(16-5); // convert 0-ffff to 0-31 if (pFI->Caps.CapsBits.Mixer_508) { bTemp=(UCHAR) P_input_num; // Channel # bTemp|=(P_channel<<5); // get left/right bTemp|=MV_508_ADDRESS; // 508 ADDRESS BIT bTemp|=MV_508_INPUT; // 508 INPUT BIT dprintf4(("Input Mixer 508 Address : %04x", bTemp)); PASX_OUT(pFI, MIXER_508_REG, bTemp); bTemp=P_volume_lvl; // get volume level reduced to (0-31 range) bTemp1=P_crossover; // get CROSSOVER if (bTemp1==MIXCROSSCAPS_NORMAL_STEREO) { } else if (bTemp1 & MIXCROSSCAPS_REVERSE_STEREO) { bTemp |= MV_508_SWAP; // this channel's swapped } else { if (P_channel==_LEFT) { if (bTemp1 & MIXCROSSCAPS_LEFT_TO_RIGHT) bTemp |= MV_508_SWAP; // this channel's swapped } else { if (bTemp1 & MIXCROSSCAPS_LEFT_TO_RIGHT) bTemp |= MV_508_SWAP; // this channel's swapped } } bTemp|=((P_output_num & 1 )<<5); // select output number dprintf4(("Input Mixer 508 Data : %04x", bTemp)); PASX_OUT(pFI, MIXER_508_REG,bTemp); } else // National (serially programmed) mixer { dprintf2(("-----------Using Serial Mixer!")); // // send out the mixer channel # // bTemp=P_input_num; // Channel # bTemp++; // channel 0 was XXX if (P_channel==_RIGHT) bTemp+=7; // this magic number is the offset to right channel bTemp|=NATIONAL_COMMAND; NationalMix(pFI, bTemp); // select the correct mixer bTemp1=P_output_num<<6; // get output number // // send out the mixer data // bTemp=P_volume_lvl &= 0x1F; // limit to 31 bTemp=Scale32To12[bTemp]; bTemp=mixersettings[bTemp]; NationalMix(pFI, bTemp); } } /*\ ;---|*|--------====< void SetOutput (line, level, channel ) >====-------- ;---|*| ;---|*| This routine outputs a new setting for a volume channel. ;---|*| ;---|*| Entry Conditions: ;---|*| WParm1 is a value from 0 - 1 ;---|*| WParm2 is a value to be written to the control (0-63) ;---|*| WParm3 signifies left or right ;---|*| ;---|*| Exit Conditions: ;---|*| None ;---|*| ; \*/ void SetOutput (PFOUNDINFO pFI, UCHAR P_output_num,USHORT P_volume_lvl,USHORT P_channel ) { UCHAR bTemp,bTemp1; dprintf2(("SetOutput Entered")); P_volume_lvl>>=(16-6); // convert 0-ffff to 0-63 if (pFI->Caps.CapsBits.Mixer_508) { //EnterCrit /// don't interrupt me! // investigate keSynchronizeExecution bTemp=(UCHAR) P_output_num; bTemp++; // Output number need to be 1 based bTemp|=(P_channel<<5); // get left/right bTemp|=MV_508_ADDRESS; dprintf4(("Output Mixer 508 Address : %04x", bTemp)); PASX_OUT(pFI, MIXER_508_REG,bTemp); #if 0 if (fMuting) { bTemp=0; } else #endif { bTemp=P_volume_lvl; // get volume level (0-63 range) if (P_output_num!=OUT_AMPLIFIER) bTemp>>=2; // output B of MV508 has 0-15 range } dprintf4((" Mixer 508 Data : %04x", bTemp)); PASX_OUT(pFI, MIXER_508_REG,bTemp); } else // NATIONAL (SERIAL PROGRAMMED) MIXER { dprintf2(("Using Serial Mixer!")); if (P_output_num==0) // serial device has volume on output 0 only { #if 0 if (fMuting) { bTemp=0; } else #endif { bTemp=Scale64To40[P_volume_lvl]; } NationalVolume(pFI, (USHORT)bTemp,(UCHAR)((P_channel&1)+NATIONAL_LEFT_VOL_REG)); // see Pas-1 spec p.15 (LEFT VOLUME CONTROL) } } } /*\ ;---|*|--------====< void SetEQ (line, EQ, level ) >====-------- ;---|*| ;---|*| This routine outputs a new setting for a volume channel. ;---|*| ;---|*| Entry Conditions: ;---|*| WParm1 is line number (range 0 - 1; 1 is don't care) ;---|*| WParm2 is EQ type (ie. Loudness, Stereo Enhance, BMT) ;---|*| WParm3 is level (range 0-31) ;---|*| ;---|*| Exit Conditions: ;---|*| None ;---|*| ; \*/ void SetEq(PFOUNDINFO pFI, USHORT P_output, USHORT P_EQtype,USHORT P_level) { UCHAR bTemp; if (P_output!=0) return; if (pFI->Caps.CapsBits.Mixer_508) { switch (P_EQtype) { case _BASS: PASX_OUT(pFI, MIXER_508_REG,MV_508_ADDRESS + MV_508_BASS); PASX_OUT(pFI, MIXER_508_REG, BassTreb32to13[P_level]); break; case _TREBLE: PASX_OUT(pFI, MIXER_508_REG,MV_508_ADDRESS + MV_508_TREBLE); PASX_OUT(pFI, MIXER_508_REG, BassTreb32to13[P_level]); break; } } else // NATIONAL (SERIAL PROGRAMMED) MIXER { bTemp=Scale32To12[P_level]; NationalVolume(pFI, (USHORT)bTemp,(UCHAR)((P_EQtype&1)+NATIONAL_BASS_REG) ); // see Pas-1 spec p.15 (LEFT VOLUME CONTROL) } } /*\ ;---|*|--------====< void SetEqMode (Loudness, Enhance ) >====-------- ;---|*| ;---|*| This routine sets loundess and stereo enhance modes ;---|*| ;---|*| Entry Conditions: ;---|*| loudness (Z vs NZ) ;---|*| Stereo Enhance (range 0-3) ;---|*| ;---|*| Exit Conditions: ;---|*| None ;---|*| ; \*/ void SetEqMode(PFOUNDINFO pFI, USHORT P_loudness, USHORT P_enhance) { UCHAR bTemp=0; if (pFI->Caps.CapsBits.Mixer_508) { PASX_OUT(pFI, MIXER_508_REG,MV_508_ADDRESS + MV_508_EQMODE); if (P_loudness) bTemp+=MV_508_LOUDNESS; bTemp+=P_enhance & MV_508_ENHANCE; PASX_OUT(pFI, MIXER_508_REG,bTemp); } else { if (P_loudness) bTemp=NATIONAL_LOUDNESS; // Loudness bit if (P_enhance) bTemp|=NATIONAL_ENHANCE; // stereo enhance bit NationalVolume(pFI, bTemp,NATIONAL_LOUD_ENH_REG); // see Pas-1 spec p.15 (LEFT VOLUME CONTROL) } } /* ----------------------====< NationalMix >====-------------------------- */ /*\ | ;---|*| NationalMix -- Load The National Mixer | ;---|*| | ;---|*| Entry Conditions | ;---|*| wData = index/data | ;---|*| | ; \*/ void NationalMix(PFOUNDINFO pFI, USHORT wData) { USHORT i,bTemp=0; // EnterCrit bTemp = audiomixr; // get current hardware state // bTemp &= SERIAL_MIX_REALSOUND+SERIAL_MIX_DUALFM; // save state of only these bits bTemp|=~(SERIAL_MIX_REALSOUND+SERIAL_MIX_DUALFM); // turn on all other bits // all clocks and strobes should be 1 PASX_OUT(pFI, SERIAL_MIXER,bTemp); KeStallExecutionProcessor(5); // wait 5 us for (i=0; i<8; i++) { // output clock is 0 PASX_OUT(pFI, SERIAL_MIXER,bTemp & (~SERIAL_MIX_CLOCK)); KeStallExecutionProcessor(5); // wait 5 us PASX_OUT(pFI, SERIAL_MIXER,(wData>>i)& 1); //send data, clock is 0 KeStallExecutionProcessor(5); // wait 5 us PASX_OUT(pFI, SERIAL_MIXER, ((wData>>i)& 1)^SERIAL_MIX_CLOCK); //send data, clock is 1 KeStallExecutionProcessor(5); // wait 5 us } PASX_OUT(pFI, SERIAL_MIXER, ((wData>>i)& 1)|SERIAL_MIX_CLOCK|SERIAL_MIX_STROBE); //strobe it in KeStallExecutionProcessor(5); // wait 5 us PASX_OUT(pFI, SERIAL_MIXER,bTemp); audiomixr=bTemp; // save the last state KeStallExecutionProcessor(5); // wait 5 us } /* ---;--------------------====< NationalVolume >====------------------------------- */ /*\; ;---|*|; NationalVolume -- Load Volume control Register ;---|*|; ;---|*|; Entry Conditions: ;---|*|; bl = parameter register (volume control channel 0-7) ;---|*|; ah = data to transfer (new channel setting) ; \*/ void NationalVolume(PFOUNDINFO pFI, USHORT wVolume, UCHAR wLeftRight) { // // pass everything, but left/right volume directly to the device // // left & right volume are presented // to the logical level as 0 - 40, // where 0 is the lowest, and 40 is // the highest. In reality, this // is backwards, that is, 40 is the // lowest, and 0 is the highest. We will // correct the value here... USHORT bTemp,i; short sVolume=wVolume; // Perform the volume control output if (( wLeftRight==NATIONAL_LEFT_VOL_REG) || (wLeftRight==NATIONAL_RIGHT_VOL_REG )) { sVolume -=0x40; // is backwards, that is, 40 is the sVolume = -sVolume; // lowest, and 0 is the highest. We will // correct the value here... } // // all 1s but volume enable and clock // bTemp=audiomixr; // save the realsound & dual fm bits bTemp &= SERIAL_MIX_REALSOUND+SERIAL_MIX_DUALFM; bTemp |= ~ (SERIAL_MIX_REALSOUND+SERIAL_MIX_DUALFM+SERIAL_MIX_MASTER+SERIAL_MIX_CLOCK); // EnterCrit PASX_OUT(pFI, SERIAL_MIXER,bTemp); // note: clock is off for (i=0; i<8; i++) { bTemp=(wLeftRight>>i)& 1; PASX_OUT(pFI, SERIAL_MIXER,(bTemp | SERIAL_MIX_CLOCK)); // clock's on KeStallExecutionProcessor(5); // wait 5 us PASX_OUT(pFI, SERIAL_MIXER,(bTemp)); // clock's off KeStallExecutionProcessor(5); // wait 5 us } // write with volume control enable // which starts data loading PASX_OUT(pFI, SERIAL_MIXER,bTemp|SERIAL_MIX_MASTER); KeStallExecutionProcessor(6); // wait 6 us for (i=0; i<8; i++) { bTemp=bTemp & (~D0); // mask off D0 bTemp |= ((sVolume>>i) & D0); // move current bit into D0 PASX_OUT(pFI, SERIAL_MIXER,bTemp+SERIAL_MIX_CLOCK); KeStallExecutionProcessor(6); // wait 6 us PASX_OUT(pFI, SERIAL_MIXER,bTemp); KeStallExecutionProcessor(6); // wait 5 us } for (i=0; i<12; i++) { PASX_OUT(pFI, SERIAL_MIXER,bTemp); KeStallExecutionProcessor(6); // wait 6 us } // toggle volume control enable PASX_OUT(pFI, SERIAL_MIXER,bTemp|SERIAL_MIX_MASTER); KeStallExecutionProcessor(6); // wait 6 us PASX_OUT(pFI, SERIAL_MIXER,bTemp|SERIAL_MIX_MASTER); KeStallExecutionProcessor(6); // wait 6 us PASX_OUT(pFI, SERIAL_MIXER,bTemp|SERIAL_MIX_MASTER); KeStallExecutionProcessor(6); // wait 6 us PASX_OUT(pFI, SERIAL_MIXER,bTemp); KeStallExecutionProcessor(6); // wait 6 us audiomixr=bTemp; // save the last state } /*\ ;---|*|--------------====< void SetFilter (int setting ) >===--------------- ;---|*| ;---|*| This routine selects a filter setting from mute to high freq filter. ;---|*| ;---|*| Entry Conditions: ;---|*| WParm1 is a value from 0 - 6 ;---|*| ;---|*| Exit Conditions: ;---|*| None ;---|*| ;---|*| ; \*/ void SetFilter(PFOUNDINFO pFI, USHORT wSetting) { USHORT wTemp; if (wSetting <= FILTERMAX) { wSetting=FilterTable[wSetting]; wTemp = audiofilt; // get current bits wTemp &= ~(fFIdatabits+fFImutebits); // save everthing but wSetting|=wTemp; // EnterCrit PASX_OUT(pFI, FILTER_REGISTER, wSetting); KeStallExecutionProcessor(6); // wait 6 us audiofilt=wSetting; // set current bits } } #if 0 ULONG Scale100ToFFFF(WORD wVal) { ULONG dwScaled; dwScaled=((ULONG)wVal) * (0xFFFFL/100L); dwScaled=(dwScaled & 0xff00L)+ (dwScaled >>8); return(dwScaled); } UCHAR ScaleFFFFTo100(WORD wVal) { UCHAR bScaled; bScaled=((wVal>>8)*100)/255; return(bScaled); } #endif

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