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244 lines
5.8 KiB
C
244 lines
5.8 KiB
C
/*
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ReactOS Sound System
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Sound Blaster DSP support
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Mixer routines
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Author:
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Andrew Greenwood (silverblade@reactos.org)
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History:
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2 July 2008 - Created
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Notes:
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Functions documented in sbdsp.h
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Currently, input/output switches and PC speaker volume
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level are not supported.
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The I/O switches are used for muting/unmuting mic, etc.
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*/
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#include "precomp.h"
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VOID
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SbMixerReset(IN PUCHAR BasePort)
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{
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WRITE_SB_MIXER_REGISTER(BasePort, SB_MIX_RESET);
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/* Are we meant to send anything else? */
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}
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NTSTATUS
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SbMixerPackLevelData(
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IN UCHAR Line,
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IN UCHAR Level,
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OUT PUCHAR PackedLevel)
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{
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if ( ! PackedLevel )
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return STATUS_INVALID_PARAMETER_3;
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switch ( Line )
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{
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case SB_MIX_MASTER_LEFT_LEVEL :
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case SB_MIX_MASTER_RIGHT_LEVEL :
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case SB_MIX_VOC_LEFT_LEVEL :
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case SB_MIX_VOC_RIGHT_LEVEL :
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case SB_MIX_MIDI_LEFT_LEVEL :
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case SB_MIX_MIDI_RIGHT_LEVEL :
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case SB_MIX_CD_LEFT_LEVEL :
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case SB_MIX_CD_RIGHT_LEVEL :
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case SB_MIX_LINE_LEFT_LEVEL :
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case SB_MIX_LINE_RIGHT_LEVEL :
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case SB_MIX_MIC_LEVEL :
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case SB_MIX_LEGACY_MIC_LEVEL : /* is this correct? */
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{
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if ( Level >= 0x20 )
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return STATUS_INVALID_PARAMETER_2;
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*PackedLevel = Level << 3;
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return STATUS_SUCCESS;
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}
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case SB_MIX_INPUT_LEFT_GAIN :
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case SB_MIX_INPUT_RIGHT_GAIN :
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case SB_MIX_OUTPUT_LEFT_GAIN :
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case SB_MIX_OUTPUT_RIGHT_GAIN :
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{
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if ( Level >= 0x04 )
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return STATUS_INVALID_PARAMETER_2;
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*PackedLevel = Level << 6;
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return STATUS_SUCCESS;
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}
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case SB_MIX_VOC_LEVEL : /* legacy */
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case SB_MIX_MASTER_LEVEL :
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case SB_MIX_FM_LEVEL :
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case SB_MIX_CD_LEVEL :
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case SB_MIX_LINE_LEVEL :
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case SB_MIX_TREBLE_LEFT_LEVEL : /* bass/treble */
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case SB_MIX_TREBLE_RIGHT_LEVEL :
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case SB_MIX_BASS_LEFT_LEVEL :
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case SB_MIX_BASS_RIGHT_LEVEL :
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{
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if ( Level >= 0x10 )
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return STATUS_INVALID_PARAMETER_2;
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*PackedLevel = Level << 4;
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return STATUS_SUCCESS;
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}
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default :
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return STATUS_INVALID_PARAMETER_1;
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};
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}
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NTSTATUS
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SbMixerUnpackLevelData(
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IN UCHAR Line,
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IN UCHAR PackedLevel,
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OUT PUCHAR Level)
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{
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if ( ! Level )
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return STATUS_INVALID_PARAMETER_3;
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switch ( Line )
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{
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case SB_MIX_MASTER_LEFT_LEVEL :
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case SB_MIX_MASTER_RIGHT_LEVEL :
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case SB_MIX_VOC_LEFT_LEVEL :
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case SB_MIX_VOC_RIGHT_LEVEL :
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case SB_MIX_MIDI_LEFT_LEVEL :
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case SB_MIX_MIDI_RIGHT_LEVEL :
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case SB_MIX_CD_LEFT_LEVEL :
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case SB_MIX_CD_RIGHT_LEVEL :
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case SB_MIX_LINE_LEFT_LEVEL :
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case SB_MIX_LINE_RIGHT_LEVEL :
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case SB_MIX_MIC_LEVEL :
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{
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*Level = PackedLevel >> 3;
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return STATUS_SUCCESS;
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}
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case SB_MIX_INPUT_LEFT_GAIN :
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case SB_MIX_INPUT_RIGHT_GAIN :
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case SB_MIX_OUTPUT_LEFT_GAIN :
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case SB_MIX_OUTPUT_RIGHT_GAIN :
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{
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*Level = PackedLevel >> 6;
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return STATUS_SUCCESS;
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}
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case SB_MIX_VOC_LEVEL : /* legacy */
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case SB_MIX_MASTER_LEVEL :
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case SB_MIX_FM_LEVEL :
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case SB_MIX_CD_LEVEL :
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case SB_MIX_LINE_LEVEL :
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case SB_MIX_TREBLE_LEFT_LEVEL : /* bass/treble */
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case SB_MIX_TREBLE_RIGHT_LEVEL :
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case SB_MIX_BASS_LEFT_LEVEL :
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case SB_MIX_BASS_RIGHT_LEVEL :
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{
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*Level = PackedLevel >> 4;
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return STATUS_SUCCESS;
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}
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default :
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return STATUS_INVALID_PARAMETER_1;
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};
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}
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NTSTATUS
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SbMixerSetLevel(
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IN PUCHAR BasePort,
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IN UCHAR Line,
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IN UCHAR Level)
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{
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UCHAR PackedLevel = 0;
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NTSTATUS Status;
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Status = SbMixerPackLevelData(Line, Level, &PackedLevel);
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switch ( Status )
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{
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case STATUS_SUCCESS :
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break;
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case STATUS_INVALID_PARAMETER_1 :
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return STATUS_INVALID_PARAMETER_2;
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case STATUS_INVALID_PARAMETER_2 :
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return STATUS_INVALID_PARAMETER_3;
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default :
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return Status;
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};
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DbgPrint("SbMixerSetLevel: Line 0x%x, raw level 0x%x, packed 0x%x\n", Line, Level, PackedLevel);
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WRITE_SB_MIXER_REGISTER(BasePort, Line);
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WRITE_SB_MIXER_DATA(BasePort, PackedLevel);
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return STATUS_SUCCESS;
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}
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NTSTATUS
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SbMixerGetLevel(
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IN PUCHAR BasePort,
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IN UCHAR Line,
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OUT PUCHAR Level)
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{
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UCHAR PackedLevel = 0;
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NTSTATUS Status;
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if ( ! Level )
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return STATUS_INVALID_PARAMETER_3;
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WRITE_SB_MIXER_REGISTER(BasePort, Line);
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PackedLevel = READ_SB_MIXER_DATA(BasePort);
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Status = SbMixerUnpackLevelData(Line, PackedLevel, Level);
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switch ( Status )
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{
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case STATUS_SUCCESS :
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break;
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case STATUS_INVALID_PARAMETER_1 :
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return STATUS_INVALID_PARAMETER_2;
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case STATUS_INVALID_PARAMETER_2 :
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return STATUS_INVALID_PARAMETER_3;
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default :
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return Status;
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};
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DbgPrint("SbMixerGetLevel: Line 0x%x, raw level 0x%x, packed 0x%x\n", Line, Level, PackedLevel);
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return STATUS_SUCCESS;
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}
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VOID
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SbMixerEnableAGC(IN PUCHAR BasePort)
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{
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/* Untested... */
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WRITE_SB_MIXER_REGISTER(BasePort, SB_MIX_AGC);
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WRITE_SB_MIXER_DATA(BasePort, 1);
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}
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VOID
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SbMixerDisableAGC(IN PUCHAR BasePort)
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{
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/* Untested... */
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WRITE_SB_MIXER_REGISTER(BasePort, SB_MIX_AGC);
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WRITE_SB_MIXER_DATA(BasePort, 0);
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}
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BOOLEAN
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SbMixerIsAGCEnabled(IN PUCHAR BasePort)
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{
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/* Untested... */
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WRITE_SB_MIXER_REGISTER(BasePort, SB_MIX_AGC);
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return (READ_SB_MIXER_DATA(BasePort) != 0);
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}
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