ALSA: doc: ReSTize SB-Live-mixer document (ecef1481) · Commits · EulixOS / Software / Kernel

Documentation/sound/cards/index.rst

+1 −0

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		@@ -6,3 +6,4 @@ Card-Specific Information

		joystick
		cmipci
		sb-live-mixer

Documentation/sound/alsa/SB-Live-mixer.txt→Documentation/sound/cards/sb-live-mixer.rst

+177 −160

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		===========================================
		Sound Blaster Live mixer / default DSP code
		===========================================

		@@ -12,8 +12,8 @@ The ALSA driver programs this portion of chip by default code
		(can be altered later) which offers the following functionality:


		1) IEC958 (S/PDIF) raw PCM
		--------------------------
		IEC958 (S/PDIF) raw PCM
		=======================

		This PCM device (it's the 4th PCM device (index 3!) and first subdevice
		(index 0) for a given card) allows to forward 48kHz, stereo, 16-bit
		@@ -27,8 +27,8 @@ at the time.
		Look to tram_poke routines in lowlevel/emu10k1/emufx.c for more details.


		2) Digital mixer controls
		-------------------------
		Digital mixer controls
		======================

		These controls are built using the DSP instructions. They offer extended
		functionality. Only the default build-in code in the ALSA driver is described
		@@ -40,317 +40,334 @@ is mentioned in multiple controls, the signal is accumulated and can be wrapped

		Explanation of used abbreviations:

		DAC - digital to analog converter
		ADC - analog to digital converter
		I2S - one-way three wire serial bus for digital sound by Philips Semiconductors
		DAC
		digital to analog converter
		ADC
		analog to digital converter
		I2S
		one-way three wire serial bus for digital sound by Philips Semiconductors
		(this standard is used for connecting standalone DAC and ADC converters)
		LFE - low frequency effects (subwoofer signal)
		AC97 - a chip containing an analog mixer, DAC and ADC converters
		IEC958 - S/PDIF
		FX-bus - the EMU10K1 chip has an effect bus containing 16 accumulators.
		LFE
		low frequency effects (subwoofer signal)
		AC97
		a chip containing an analog mixer, DAC and ADC converters
		IEC958
		S/PDIF
		FX-bus
		the EMU10K1 chip has an effect bus containing 16 accumulators.
		Each of the synthesizer voices can feed its output to these accumulators
		and the DSP microcontroller can operate with the resulting sum.


		name='Wave Playback Volume',index=0

		``name='Wave Playback Volume',index=0``
		---------------------------------------
		This control is used to attenuate samples for left and right PCM FX-bus
		accumulators. ALSA uses accumulators 0 and 1 for left and right PCM samples.
		The result samples are forwarded to the front DAC PCM slots of the AC97 codec.

		name='Wave Surround Playback Volume',index=0

		``name='Wave Surround Playback Volume',index=0``
		------------------------------------------------
		This control is used to attenuate samples for left and right PCM FX-bus
		accumulators. ALSA uses accumulators 0 and 1 for left and right PCM samples.
		The result samples are forwarded to the rear I2S DACs. These DACs operates
		separately (they are not inside the AC97 codec).

		name='Wave Center Playback Volume',index=0

		``name='Wave Center Playback Volume',index=0``
		----------------------------------------------
		This control is used to attenuate samples for left and right PCM FX-bus
		accumulators. ALSA uses accumulators 0 and 1 for left and right PCM samples.
		The result is mixed to mono signal (single channel) and forwarded to
		the ??rear?? right DAC PCM slot of the AC97 codec.

		name='Wave LFE Playback Volume',index=0

		``name='Wave LFE Playback Volume',index=0``
		-------------------------------------------
		This control is used to attenuate samples for left and right PCM FX-bus
		accumulators. ALSA uses accumulators 0 and 1 for left and right PCM.
		The result is mixed to mono signal (single channel) and forwarded to
		the ??rear?? left DAC PCM slot of the AC97 codec.

		name='Wave Capture Volume',index=0
		name='Wave Capture Switch',index=0

		``name='Wave Capture Volume',index=0``, ``name='Wave Capture Switch',index=0``
		------------------------------------------------------------------------------
		These controls are used to attenuate samples for left and right PCM FX-bus
		accumulator. ALSA uses accumulators 0 and 1 for left and right PCM.
		The result is forwarded to the ADC capture FIFO (thus to the standard capture
		PCM device).

		name='Synth Playback Volume',index=0

		``name='Synth Playback Volume',index=0``
		----------------------------------------
		This control is used to attenuate samples for left and right MIDI FX-bus
		accumulators. ALSA uses accumulators 4 and 5 for left and right MIDI samples.
		The result samples are forwarded to the front DAC PCM slots of the AC97 codec.

		name='Synth Capture Volume',index=0
		name='Synth Capture Switch',index=0

		``name='Synth Capture Volume',index=0``, ``name='Synth Capture Switch',index=0``
		--------------------------------------------------------------------------------
		These controls are used to attenuate samples for left and right MIDI FX-bus
		accumulator. ALSA uses accumulators 4 and 5 for left and right PCM.
		The result is forwarded to the ADC capture FIFO (thus to the standard capture
		PCM device).

		name='Surround Playback Volume',index=0

		``name='Surround Playback Volume',index=0``
		-------------------------------------------
		This control is used to attenuate samples for left and right rear PCM FX-bus
		accumulators. ALSA uses accumulators 2 and 3 for left and right rear PCM samples.
		The result samples are forwarded to the rear I2S DACs. These DACs operate
		separately (they are not inside the AC97 codec).

		name='Surround Capture Volume',index=0
		name='Surround Capture Switch',index=0

		``name='Surround Capture Volume',index=0``, ``name='Surround Capture Switch',index=0``
		--------------------------------------------------------------------------------------
		These controls are used to attenuate samples for left and right rear PCM FX-bus
		accumulators. ALSA uses accumulators 2 and 3 for left and right rear PCM samples.
		The result is forwarded to the ADC capture FIFO (thus to the standard capture
		PCM device).

		name='Center Playback Volume',index=0

		``name='Center Playback Volume',index=0``
		-----------------------------------------
		This control is used to attenuate sample for center PCM FX-bus accumulator.
		ALSA uses accumulator 6 for center PCM sample. The result sample is forwarded
		to the ??rear?? right DAC PCM slot of the AC97 codec.

		name='LFE Playback Volume',index=0

		``name='LFE Playback Volume',index=0``
		--------------------------------------
		This control is used to attenuate sample for center PCM FX-bus accumulator.
		ALSA uses accumulator 6 for center PCM sample. The result sample is forwarded
		to the ??rear?? left DAC PCM slot of the AC97 codec.

		name='AC97 Playback Volume',index=0

		``name='AC97 Playback Volume',index=0``
		---------------------------------------
		This control is used to attenuate samples for left and right front ADC PCM slots
		of the AC97 codec. The result samples are forwarded to the front DAC PCM
		slots of the AC97 codec.
		********************************************************************************
		* Note: This control should be zero for the standard operations, otherwise *
		* a digital loopback is activated. *
		********************************************************************************

		name='AC97 Capture Volume',index=0
		.. note::
		This control should be zero for the standard operations, otherwise
		a digital loopback is activated.


		``name='AC97 Capture Volume',index=0``
		--------------------------------------
		This control is used to attenuate samples for left and right front ADC PCM slots
		of the AC97 codec. The result is forwarded to the ADC capture FIFO (thus to
		the standard capture PCM device).
		********************************************************************************
		* Note: This control should be 100 (maximal value), otherwise no analog *
		* inputs of the AC97 codec can be captured (recorded). *
		********************************************************************************

		name='IEC958 TTL Playback Volume',index=0
		.. note::
		This control should be 100 (maximal value), otherwise no analog
		inputs of the AC97 codec can be captured (recorded).

		``name='IEC958 TTL Playback Volume',index=0``
		---------------------------------------------
		This control is used to attenuate samples from left and right IEC958 TTL
		digital inputs (usually used by a CDROM drive). The result samples are
		forwarded to the front DAC PCM slots of the AC97 codec.

		name='IEC958 TTL Capture Volume',index=0

		``name='IEC958 TTL Capture Volume',index=0``
		--------------------------------------------
		This control is used to attenuate samples from left and right IEC958 TTL
		digital inputs (usually used by a CDROM drive). The result samples are
		forwarded to the ADC capture FIFO (thus to the standard capture PCM device).

		name='Zoom Video Playback Volume',index=0

		``name='Zoom Video Playback Volume',index=0``
		---------------------------------------------
		This control is used to attenuate samples from left and right zoom video
		digital inputs (usually used by a CDROM drive). The result samples are
		forwarded to the front DAC PCM slots of the AC97 codec.

		name='Zoom Video Capture Volume',index=0

		``name='Zoom Video Capture Volume',index=0``
		--------------------------------------------
		This control is used to attenuate samples from left and right zoom video
		digital inputs (usually used by a CDROM drive). The result samples are
		forwarded to the ADC capture FIFO (thus to the standard capture PCM device).

		name='IEC958 LiveDrive Playback Volume',index=0

		``name='IEC958 LiveDrive Playback Volume',index=0``
		---------------------------------------------------
		This control is used to attenuate samples from left and right IEC958 optical
		digital input. The result samples are forwarded to the front DAC PCM slots
		of the AC97 codec.

		name='IEC958 LiveDrive Capture Volume',index=0

		``name='IEC958 LiveDrive Capture Volume',index=0``
		--------------------------------------------------
		This control is used to attenuate samples from left and right IEC958 optical
		digital inputs. The result samples are forwarded to the ADC capture FIFO
		(thus to the standard capture PCM device).

		name='IEC958 Coaxial Playback Volume',index=0

		``name='IEC958 Coaxial Playback Volume',index=0``
		-------------------------------------------------
		This control is used to attenuate samples from left and right IEC958 coaxial
		digital inputs. The result samples are forwarded to the front DAC PCM slots
		of the AC97 codec.

		name='IEC958 Coaxial Capture Volume',index=0

		``name='IEC958 Coaxial Capture Volume',index=0``
		------------------------------------------------
		This control is used to attenuate samples from left and right IEC958 coaxial
		digital inputs. The result samples are forwarded to the ADC capture FIFO
		(thus to the standard capture PCM device).

		name='Line LiveDrive Playback Volume',index=0
		name='Line LiveDrive Playback Volume',index=1

		``name='Line LiveDrive Playback Volume',index=0``, ``name='Line LiveDrive Playback Volume',index=1``
		----------------------------------------------------------------------------------------------------
		This control is used to attenuate samples from left and right I2S ADC
		inputs (on the LiveDrive). The result samples are forwarded to the front
		DAC PCM slots of the AC97 codec.

		name='Line LiveDrive Capture Volume',index=1
		name='Line LiveDrive Capture Volume',index=1

		``name='Line LiveDrive Capture Volume',index=1``, ``name='Line LiveDrive Capture Volume',index=1``
		--------------------------------------------------------------------------------------------------
		This control is used to attenuate samples from left and right I2S ADC
		inputs (on the LiveDrive). The result samples are forwarded to the ADC
		capture FIFO (thus to the standard capture PCM device).

		name='Tone Control - Switch',index=0

		``name='Tone Control - Switch',index=0``
		----------------------------------------
		This control turns the tone control on or off. The samples for front, rear
		and center / LFE outputs are affected.

		name='Tone Control - Bass',index=0

		``name='Tone Control - Bass',index=0``
		--------------------------------------
		This control sets the bass intensity. There is no neutral value!!
		When the tone control code is activated, the samples are always modified.
		The closest value to pure signal is 20.

		name='Tone Control - Treble',index=0

		``name='Tone Control - Treble',index=0``
		----------------------------------------
		This control sets the treble intensity. There is no neutral value!!
		When the tone control code is activated, the samples are always modified.
		The closest value to pure signal is 20.

		name='IEC958 Optical Raw Playback Switch',index=0

		``name='IEC958 Optical Raw Playback Switch',index=0``
		-----------------------------------------------------
		If this switch is on, then the samples for the IEC958 (S/PDIF) digital
		output are taken only from the raw FX8010 PCM, otherwise standard front
		PCM samples are taken.

		name='Headphone Playback Volume',index=1

		``name='Headphone Playback Volume',index=1``
		--------------------------------------------
		This control attenuates the samples for the headphone output.

		name='Headphone Center Playback Switch',index=1

		``name='Headphone Center Playback Switch',index=1``
		---------------------------------------------------
		If this switch is on, then the sample for the center PCM is put to the
		left headphone output (useful for SB Live cards without separate center/LFE
		output).

		name='Headphone LFE Playback Switch',index=1

		``name='Headphone LFE Playback Switch',index=1``
		------------------------------------------------
		If this switch is on, then the sample for the center PCM is put to the
		right headphone output (useful for SB Live cards without separate center/LFE
		output).


		3) PCM stream related controls
		------------------------------

		name='EMU10K1 PCM Volume',index 0-31
		PCM stream related controls
		===========================

		``name='EMU10K1 PCM Volume',index 0-31``
		----------------------------------------
		Channel volume attenuation in range 0-0xffff. The maximum value (no
		attenuation) is default. The channel mapping for three values is
		as follows:

		0 - mono, default 0xffff (no attenuation)
		1 - left, default 0xffff (no attenuation)
		2 - right, default 0xffff (no attenuation)

		name='EMU10K1 PCM Send Routing',index 0-31
		* 0 - mono, default 0xffff (no attenuation)
		* 1 - left, default 0xffff (no attenuation)
		* 2 - right, default 0xffff (no attenuation)

		``name='EMU10K1 PCM Send Routing',index 0-31``
		----------------------------------------------
		This control specifies the destination - FX-bus accumulators. There are
		twelve values with this mapping:

		0 - mono, A destination (FX-bus 0-15), default 0
		1 - mono, B destination (FX-bus 0-15), default 1
		2 - mono, C destination (FX-bus 0-15), default 2
		3 - mono, D destination (FX-bus 0-15), default 3
		4 - left, A destination (FX-bus 0-15), default 0
		5 - left, B destination (FX-bus 0-15), default 1
		6 - left, C destination (FX-bus 0-15), default 2
		7 - left, D destination (FX-bus 0-15), default 3
		8 - right, A destination (FX-bus 0-15), default 0
		9 - right, B destination (FX-bus 0-15), default 1
		10 - right, C destination (FX-bus 0-15), default 2
		11 - right, D destination (FX-bus 0-15), default 3
		* 0 - mono, A destination (FX-bus 0-15), default 0
		* 1 - mono, B destination (FX-bus 0-15), default 1
		* 2 - mono, C destination (FX-bus 0-15), default 2
		* 3 - mono, D destination (FX-bus 0-15), default 3
		* 4 - left, A destination (FX-bus 0-15), default 0
		* 5 - left, B destination (FX-bus 0-15), default 1
		* 6 - left, C destination (FX-bus 0-15), default 2
		* 7 - left, D destination (FX-bus 0-15), default 3
		* 8 - right, A destination (FX-bus 0-15), default 0
		* 9 - right, B destination (FX-bus 0-15), default 1
		* 10 - right, C destination (FX-bus 0-15), default 2
		* 11 - right, D destination (FX-bus 0-15), default 3

		Don't forget that it's illegal to assign a channel to the same FX-bus accumulator
		more than once (it means 0=0 && 1=0 is an invalid combination).

		name='EMU10K1 PCM Send Volume',index 0-31

		``name='EMU10K1 PCM Send Volume',index 0-31``
		---------------------------------------------
		It specifies the attenuation (amount) for given destination in range 0-255.
		The channel mapping is following:

		0 - mono, A destination attn, default 255 (no attenuation)
		1 - mono, B destination attn, default 255 (no attenuation)
		2 - mono, C destination attn, default 0 (mute)
		3 - mono, D destination attn, default 0 (mute)
		4 - left, A destination attn, default 255 (no attenuation)
		5 - left, B destination attn, default 0 (mute)
		6 - left, C destination attn, default 0 (mute)
		7 - left, D destination attn, default 0 (mute)
		8 - right, A destination attn, default 0 (mute)
		9 - right, B destination attn, default 255 (no attenuation)
		10 - right, C destination attn, default 0 (mute)
		11 - right, D destination attn, default 0 (mute)
		* 0 - mono, A destination attn, default 255 (no attenuation)
		* 1 - mono, B destination attn, default 255 (no attenuation)
		* 2 - mono, C destination attn, default 0 (mute)
		* 3 - mono, D destination attn, default 0 (mute)
		* 4 - left, A destination attn, default 255 (no attenuation)
		* 5 - left, B destination attn, default 0 (mute)
		* 6 - left, C destination attn, default 0 (mute)
		* 7 - left, D destination attn, default 0 (mute)
		* 8 - right, A destination attn, default 0 (mute)
		* 9 - right, B destination attn, default 255 (no attenuation)
		* 10 - right, C destination attn, default 0 (mute)
		* 11 - right, D destination attn, default 0 (mute)



		4) MANUALS/PATENTS:
		-------------------
		MANUALS/PATENTS
		===============

		ftp://opensource.creative.com/pub/doc
		-------------------------------------

		Files:
		LM4545.pdf AC97 Codec

		m2049.pdf The EMU10K1 Digital Audio Processor

		hog63.ps FX8010 - A DSP Chip Architecture for Audio Effects
		LM4545.pdf
		AC97 Codec
		m2049.pdf
		The EMU10K1 Digital Audio Processor
		hog63.ps
		FX8010 - A DSP Chip Architecture for Audio Effects


		WIPO Patents
		------------
		Patent numbers:
		WO 9901813 (A1) Audio Effects Processor with multiple asynchronous (Jan. 14, 1999)
		streams

		WO 9901814 (A1) Processor with Instruction Set for Audio Effects (Jan. 14, 1999)
		WO 9901813 (A1)
		Audio Effects Processor with multiple asynchronous streams
		(Jan. 14, 1999)

		WO 9901814 (A1)
		Processor with Instruction Set for Audio Effects (Jan. 14, 1999)

		WO 9901953 (A1) Audio Effects Processor having Decoupled Instruction
		WO 9901953 (A1)
		Audio Effects Processor having Decoupled Instruction
		Execution and Audio Data Sequencing (Jan. 14, 1999)


		US Patents (http://www.uspto.gov/)
		----------------------------------

		US 5925841 Digital Sampling Instrument employing cache memory (Jul. 20, 1999)
		US 5925841
		Digital Sampling Instrument employing cache memory (Jul. 20, 1999)

		US 5928342 Audio Effects Processor integrated on a single chip (Jul. 27, 1999)
		US 5928342
		Audio Effects Processor integrated on a single chip
		with a multiport memory onto which multiple asynchronous
		digital sound samples can be concurrently loaded
		(Jul. 27, 1999)

		US 5930158 Processor with Instruction Set for Audio Effects (Jul. 27, 1999)
		US 5930158
		Processor with Instruction Set for Audio Effects (Jul. 27, 1999)

		US 6032235 Memory initialization circuit (Tram) (Feb. 29, 2000)
		US 6032235
		Memory initialization circuit (Tram) (Feb. 29, 2000)

		US 6138207 Interpolation looping of audio samples in cache connected to (Oct. 24, 2000)
		US 6138207
		Interpolation looping of audio samples in cache connected to
		system bus with prioritization and modification of bus transfers
		in accordance with loop ends and minimum block sizes
		(Oct. 24, 2000)

		US 6151670 Method for conserving memory storage using a (Nov. 21, 2000)
		US 6151670
		Method for conserving memory storage using a
		pool of short term memory registers
		(Nov. 21, 2000)

		US 6195715 Interrupt control for multiple programs communicating with (Feb. 27, 2001)
		US 6195715
		Interrupt control for multiple programs communicating with
		a common interrupt by associating programs to GP registers,
		defining interrupt register, polling GP registers, and invoking
		callback routine associated with defined interrupt register
		(Feb. 27, 2001)