186 lines
4.8 KiB
Plaintext
186 lines
4.8 KiB
Plaintext
#
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# For a description of the syntax of this configuration file,
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# see the file kconfig-language.txt in the NuttX tools repository.
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#
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config AUDIO_I2SCHAR
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bool "I2S character driver (for testing only)"
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default n
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depends on I2S && AUDIO
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---help---
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This selection enables a simple character driver that supports I2S
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transfers via a read() and write(). The intent of this driver is to
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support I2S testing. It is not an audio driver but does conform to
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some of the buffer management heuristics of an audio driver. It is
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not suitable for use in any real driver application in its current
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form.
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if AUDIO_I2SCHAR
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config AUDIO_I2SCHAR_RXTIMEOUT
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int "RX timeout"
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default 0
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---help---
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This is a fixed timeout value that will be used for all receiver
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transfers. This is in units of system clock ticks (configurable).
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The special value of zero disables RX timeouts. Default: 0
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config AUDIO_I2SCHAR_TXTIMEOUT
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int "TX timeout"
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default 0
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---help---
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This is a fixed timeout value that will be used for all transmitter
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transfers. This is in units of system clock ticks (configurable).
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The special value of zero disables RX timeouts. Default: 0
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endif # AUDIO_I2SCHAR
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config AUDIO_TONE
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bool "Audio Tone Generator using PWM"
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default n
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depends on PWM && AUDIO_DEVICES
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---help---
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This driver enables the Audio Tone Generator for NuttX.
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if AUDIO_TONE
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endif # AUDIO_TONE
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config VS1053
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bool "VS1053 codec chip"
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default n
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depends on AUDIO
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---help---
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Select to enable support for the VS1053 Audio codec by VLSI Solutions.
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This chip provides encoding and decoding of MP3, WMA, AAC and Ogg
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Vorbis format audio. It also has a general DSP which is user
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programmable to perform special audio (or any DSP) functions.
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if VS1053
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config VS1053_DEVICE_COUNT
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int "Number of VS1053 devices attached"
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default 1
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---help---
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Sets the number of VS1053 type devices availalbe to the system.
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This is required to reserve global, static lower-half driver
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context pointers for the DREQ ISR to use for lookup when it needs
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to signal that additional data is being requested.
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config VS1053_WORKER_STACKSIZE
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int "VS1053 worker thread stack size"
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default 768
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---help---
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Stack size to use with the VS1053 worker thread.
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if AUDIO_DRIVER_SPECIFIC_BUFFERS
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config VS1053_NUM_BUFFERS
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int "Number of Audio Pipeline Buffers to use"
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default 2
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---help---
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Sets the number of the Audio Pipeline Buffers used to deliver audio
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data to the VS1053 driver. The minimum you should set this is
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2 buffers, which should be adequate for most media types.
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config VS1053_BUFFER_SIZE
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int "Size of Audio Pipeline Buffers to use"
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default 8192
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---help---
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Sets the size of the Audio Pipeline Buffers used to deliver audio
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data to the VS1053 driver. The minimum you should set this is
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2048 bytes. The larger the buffer, the better CPU performance.
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endif # AUDIO_DRIVER_SPECIFIC_BUFFERS
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endif # VS1053
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config AUDIO_WM8904
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bool "WM8904 audio chip"
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default n
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depends on AUDIO
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---help---
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Select to enable support for the WM8904 Audio codec by Wolfson
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Microelectonics. This chip is a lower level audio chip.. basically
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an exotic D-to-A. It includes no built-in support for audio CODECS
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The WM8904 provides:
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- Low power consumption
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- High SNR
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- Stereo digital microphone input
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- Digital Dynamic Range Controller (compressor / limiter)
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- Digital sidetone mixing
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- Ground-referenced headphone driver
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- Ground-referenced line outputs
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NOTE: This driver also depends on both I2C and I2S support although
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that dependency is not explicit here.
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if AUDIO_WM8904
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config WM8904_INITVOLUME
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int "WM8904 initial volume setting"
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default 250
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config WM8904_INFLIGHT
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int "WM8904 maximum in-flight audio buffers"
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default 2
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config WM8904_MSG_PRIO
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int "WM8904 message priority"
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default 1
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config WM8904_BUFFER_SIZE
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int "WM8904 preferred buffer size"
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default 8192
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config WM8904_NUM_BUFFERS
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int "WM8904 preferred number of buffers"
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default 4
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config WM8904_WORKER_STACKSIZE
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int "WM8904 worker thread stack size"
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default 768
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config WM8904_REGDUMP
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bool "WM8904 register dump"
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default n
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---help---
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Enable logic to dump the contents of all WM8904 registers.
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config WM8904_CLKDEBUG
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bool "WM8904 clock analysis"
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default n
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---help---
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Enable logic to analyze WM8904 clock configuation.
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endif # AUDIO_WM8904
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config AUDIO_NULL
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bool "NULL audio device"
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default n
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depends on AUDIO
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---help---
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A do-nothinig audio device driver to simplify testing of audio
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decoders.
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if AUDIO_NULL
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config AUDIO_NULL_MSG_PRIO
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int "Null audio device message priority"
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default 1
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config AUDIO_NULL_BUFFER_SIZE
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int "Null audio device preferred buffer size"
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default 8192
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config AUDIO_NULL_NUM_BUFFERS
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int "Null audio device preferred number of buffers"
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default 4
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config AUDIO_NULL_WORKER_STACKSIZE
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int "Null audio device worker thread stack size"
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default 768
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endif # AUDIO_NULL
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