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[alsa-devel] Pausing an audio stream during playback using mixer control interface
by Pharaoh . 10 Sep '07

10 Sep '07

Hi I want to provide a mixer control interface which will pause the playback and resume it as needed. I tried to disable DMA while pausing and enable it while releasing, but this doesn't stop alsa upper layers from inquiring the buffer position and since DMA is not on, it gives a pcm write error, which is quite obvious. I know that, SNDRV_PCM_TRIGGER_PAUSE_PUSH can be used in trigger callback to pause the stream, but I want to give a mixer interface to do the same. As per my understanding this is not possible keeping in mind the current framework, can anyone think of any work around? -pharaoh.

2 1

[alsa-devel] RME HDSPe Info/Question
by ricman 10 Sep '07

10 Sep '07

Howdy! I would like to share a piece of information which I am hoping will be helpful to the ALSA development community. This information is regarding the RME HDSP Multiface/Digiface family of products. We know from http://www.alsa-project.org/main/index.php/Matrix:Vendor-RME and http://www.alsa-project.org/main/index.php/Matrix:Module-hdsp that we have a PCI driver for Linux thanks to Paul Davis, Marcus Andersson, Thomas Charbonnel (and probably others). However, RME recently came out with a new PCI Express (PCI-E) interface for these products. Here is where is gets interesting: I've been trying to ascertain whether I should purchase the PCI-E HDSPe card for my Linux box. I prayed to the RME gods on their forum and none other than Matthias Carstens of RME responded that "The PCIe cards are fully downward compatible, so can be used even with the oldest Windows drivers. So I expect Linux to work with them too." (http://www.rme-audio.de/forum/viewtopic.php?id=1031) Is it possible that he is right? Will the old PCI Linux driver work just the same (or better) with the newer PCI-E card? For some reason I just naturally thought the PCI-E card would need its own special driver. Or is the only way to know to just buy and see if it works? That seem like an expensive way to find out... Thanks! ____________________________________________________________________________________ Choose the right car based on your needs. Check out Yahoo! Autos new Car Finder tool. http://autos.yahoo.com/carfinder/

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[alsa-devel] period_size and relation to number of samples
by Markus Korber 10 Sep '07

10 Sep '07

Hello, one question: If my driver announces the setting below[1], how many samples must an application provide in a single snd_pcm_writei() or snd_pcm_mmap_writei() call? Shouldn't it always send 8192 bytes or 2048 left and right samples (4096 in total) or is it free to send more or less? Logging data in my chip_playback_copy() function shows the following (S16_LE, RW_INTERLEAVED): ,----[ mplayer, aplay: ] | chip_playback_copy (0 -> src: 0xffce1000, #bytes: 0x4000) | chip_playback_copy (1 -> src: 0xffce1000, #bytes: 0x2000) | chip_playback_copy (1 -> src: 0xffce1000, #bytes: 0x2000) `---- ,----[ alsaplayer: ] | chip_playback_copy (0 -> src: 0xffce1000, #bytes: 0x2000) | chip_playback_copy (0 -> src: 0xffce3000, #bytes: 0x2000) | chip_playback_copy (0 -> src: 0xffce3000, #bytes: 0x2000) | [...] `---- Thus mplayer and aplay provide 16384 bytes (4096 l/r samples) in the first call and 8192 bytes (2048 l/r samples) for all subsequent calls. However, alsaplayer provides 8192 bytes (2048 l/r samples) for all calls. Now, what is an application allowed to send and what not? For example, could an application only send 1024 l/r samples and is the driver responsible for buffering the data? Or must it obey the announced period_size and *always* provide 2048 l/r samples? Thanks. ,----[ 1 ] | stream : PLAYBACK | access : RW_INTERLEAVED | format : S16_LE | subformat : STD | channels : 2 | rate : 44100 | exact rate : 44100 (44100/1) | msbits : 16 | buffer_size : 4096 | period_size : 2048 | period_time : 46439 | tick_time : 10000 | tstamp_mode : NONE | period_step : 1 | sleep_min : 0 | avail_min : 2048 | xfer_align : 1 | start_threshold : 2048 | stop_threshold : 4096 | silence_threshold: 0 | silence_size : 0 | boundary : 1073741824 | start_mode: DATA | xrun_mode: STOP | tstamp_mode: NONE | period_step: 1 | sleep_min: 0 | avail_min: 2048 | xfer_align: 1 | silence_threshold: 0 | silence_size: 0 | boundary: 1073741824 `---- Regards, Markus Korber

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Re: [alsa-devel] [Alsa-user] Disable MIDI port creation with ICE1724
by Rene Herman 10 Sep '07

10 Sep '07

On 09/08/2007 03:32 AM, James Roberts wrote: > I need to disable the creation of the ICEnsemble ICE1724 midi device on > my system. I am using a off-brand card (see below) and accessing the > midi device crashes the system hard. > > I have explored udev rules, kernel opts, etc ad nauseum to do this. > > To be clear I do not want to use the midi capabilities of the sound card > at all, but want to keep the sound capabilities. > > lspci: > 00:09.0 Multimedia audio controller: VIA Technologies Inc. VT1720/24 > [Envy24PT/HT] PCI Multi-Channel Audio Controller (rev 01) > > amidi -l: > Dir Device Name > IO hw:0,0 ICEnsemble ICE1724 MIDI <- this must be gone forever! > IO hw:1,0,0 BCF2000 MIDI 1 > IO hw:1,0,1 BCF2000 MIDI 2 > O hw:1,0,2 BCF2000 MIDI 3 > > > It appears to get assigned to midiC0D0 > > Am I better off going the udev route and trying to somehow assign a null > value somewhere or is there a way to prevent alsa from creating it? > > Maybe an alias? Sounds like this may warrent a module parameter. Trivial, untested version below, but this needs a module maintainer to decide if there may be better ways to discriminate. Crossposted to alsa-devel... (against 2.6.22.x). Rene. diff --git a/sound/pci/ice1712/ice1724.c b/sound/pci/ice1712/ice1724.c index ee620de..1d64dcc 100644 --- a/sound/pci/ice1712/ice1724.c +++ b/sound/pci/ice1712/ice1724.c @@ -75,6 +75,7 @@ static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */ static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */ static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable this card */ static char *model[SNDRV_CARDS]; +static int no_mpu401[SNDRV_CARDS]; module_param_array(index, int, NULL, 0444); MODULE_PARM_DESC(index, "Index value for ICE1724 soundcard."); @@ -84,6 +85,8 @@ module_param_array(enable, bool, NULL, 0444); MODULE_PARM_DESC(enable, "Enable ICE1724 soundcard."); module_param_array(model, charp, NULL, 0444); MODULE_PARM_DESC(model, "Use the given board model."); +module_param_array(no_mpu401, int, NULL, 0444); +MODULE_PARM_DESC(no_mpu401, "Mmf mmmff mmfmf mff mmfmmff."); /* Both VT1720 and VT1724 have the same PCI IDs */ @@ -2398,7 +2401,7 @@ static int __devinit snd_vt1724_probe(struct pci_dev *pci, } } - if (! c->no_mpu401) { + if (! c->no_mpu401 && ! no_mpu401[dev]) { if (ice->eeprom.data[ICE_EEP2_SYSCONF] & VT1724_CFG_MPU401) { if ((err = snd_mpu401_uart_new(card, 0, MPU401_HW_ICE1712, ICEREG1724(ice, MPU_CTRL),

2 1

[alsa-devel] alsaplayer configure says Build alsa 0.9.x output plugin: no
by Timur Tabi 10 Sep '07

10 Sep '07

I have a working ALSA driver on my system. I downloaded the latest alsaplayer and when I ran ./configure, it says this: Build alsa 0.9.x output plugin: no I looked at the source code for configure, and I found this: if (eval "$ac_cpp conftest.$ac_ext") 2>&5 | $EGREP "AP_maGiC_VALUE" >/dev/null 2>&1; then have_alsa_final=yes But I don't understand it. What do I need to have to get alsaplayer to build ALSA output support? -- Timur Tabi Linux Kernel Developer @ Freescale

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[alsa-devel] Multiple Stream Playback on HDA-Intel
by Azhar Aga 09 Sep '07

09 Sep '07

Hi, I am trying ao develop an application that would play multiple streams, using the same soundcard on my PC and since this is my first stint in developing application on a pc rather than a native board I am facing problems, for doing this I am using libao to control ALSA. For me to demostrate the multiple stream playback, I need ALSA to direct output of one of the streams on the device hw:0,0 and the other on hw:0,1 [My card has probably two devices as I checked aplay -l option that gave me a list of devices] so that i could connect a set of speakers in one of the PC jacks and the another set in another Jack. Can this be done in using libao. If not then how one direct the sound output to other devices on the same card. Does the configuation file need to be changed? I made a .asoundrc config file in the the root directory but that did not help when I tried to access a hw:0,0 with the command aplay -D hw:0,0 < some_test_file.wav> it gives me the device busy error. ( with or without the .asoundrc aplay -d hw:0,0 gives the above mentioned error) The Card I am using is HDA_intel ICH family that comes with the DELL. -- Thanks and With Regards Azhar Aga

1 0

[alsa-devel] [usb-audio] M-Audio FastTrack Pro giving invalid sample rates
by Lasse Kärkkäinen 09 Sep '07

09 Sep '07

This bug has been around for years... ALSA seems to think that the card supports a wide range of sampling rates, but it does not manage to set them in practice. I do not know which is faulty, ALSA rate setting or the USB info sent by the device, but the problem needs to be fixed. I did some measurements with the alsarate program, attached to my other post (subject: ALSA C++ API). Using bConfigurationValue=1 and measuring the actual rate with alsarate, I get >>> Testing playback Opening ALSA device hw:0,1 at 44100 Hz. Got 44100 Hz, 2 channels, period 1.02 ms. 96.27 seconds, measured rate 45807 Hz. >>> Testing capture Opening ALSA device hw:0,1 at 44100 Hz. Got 44100 Hz, 2 channels, period 1.02 ms. 97.29 seconds, measured rate 45330 Hz. As expected, 44.1 kHz works. The measured rate seems a bit higher than it should be, but I assume that this is an alsarate inaccuracy rather than an actual phenomenon. >>> Testing playback Opening ALSA device hw:0,1 at 48000 Hz. Got 44100 Hz, 2 channels, period 1 ms. 96.27 seconds, measured rate 45808 Hz. >>> Testing capture Opening ALSA device hw:0,1 at 48000 Hz. Got 48000 Hz, 2 channels, period 1 ms. 105.89 seconds, measured rate 45330 Hz. Using 48 kHz for playback is not possible, the snd_pcm_hw_params_rate_near returns a new rate of 44.1 kHz. This is all fine and the measured rate still is around 44.1 kHz as it should. In the capture part, we see the first problem: rate_near returned 48 kHz, but the measured value hasn't changed. So, the application thinks that it is recording at 48 kHz, but ALSA only gives it data at 44.1 kHz. This is a bug in ALSA. >>> Testing playback Opening ALSA device hw:0,1 at 8000 Hz. Got 44100 Hz, 2 channels, period 1.02 ms. 96.27 seconds, measured rate 45808 Hz. >>> Testing capture Opening ALSA device hw:0,1 at 8000 Hz. Got 8000 Hz, 2 channels, period 2 ms. 17.66 seconds, measured rate 45309 Hz. Trying to use 8 kHz yields similar results to the 48 kHz test. No problems with playback, but the capture part reports that it is using 8 kHz, even though it really uses 44.1 kHz. >>> Testing playback Opening ALSA device hw:0,1 at 96000 Hz. Got 44100 Hz, 2 channels, period 1.02 ms. 96.27 seconds, measured rate 45808 Hz. >>> Testing capture Opening ALSA device hw:0,1 at 96000 Hz. Got 48000 Hz, 2 channels, period 1 ms. 105.89 seconds, measured rate 45330 Hz. 96 kHz makes little difference. Now the capture rate is reported to be 48 kHz, but the actual rates are still always 44.1 kHz. That was all done using the default configuration. When using the other configuration, bConfigurationValue=2, the following results are gathered: >>> Testing playback Opening ALSA device hw:0,1 at 44100 Hz. Got 44100 Hz, 2 channels, period 1.02 ms. 96.27 seconds, measured rate 45808 Hz. >>> Testing capture Opening ALSA device hw:0,1 at 44100 Hz. Got 44100 Hz, 2 channels, period 1.02 ms. 97.29 seconds, measured rate 45330 Hz. 44.1 kHz is identical to that in the other configuration. >>> Testing playback Opening ALSA device hw:0,1 at 48000 Hz. Got 48000 Hz, 2 channels, period 1 ms. 96.29 seconds, measured rate 49849 Hz. >>> Testing capture Opening ALSA device hw:0,1 at 48000 Hz. Got 48000 Hz, 2 channels, period 1 ms. 97.29 seconds, measured rate 49339 Hz. 48 kHz now works properly for both playback and capture (note: measured rate over 49 kHz, but the measurements displaying about 1.5 kHz too high is consistent). >>> Testing playback Opening ALSA device hw:0,1 at 8000 Hz. Got 8000 Hz, 2 channels, period 2 ms. 15.89 seconds, measured rate 50336 Hz. >>> Testing capture Opening ALSA device hw:0,1 at 8000 Hz. Got 8000 Hz, 2 channels, period 2 ms. 16.22 seconds, measured rate 49313 Hz. 8 kHz still doesn't work. ALSA reports that it does, but in reality gives 48 kHz (within the bounds of the measurement accuracy). >>> Testing playback Opening ALSA device hw:0,1 at 96000 Hz. Got 48000 Hz, 2 channels, period 1 ms. 96.29 seconds, measured rate 49849 Hz. >>> Testing capture Opening ALSA device hw:0,1 at 96000 Hz. Got 48000 Hz, 2 channels, period 1 ms. 97.29 seconds, measured rate 49339 Hz. 96 kHz works kinda like it should, except for the fact that the hardware should support that rate as well. Summa summarum: Config 1 only uses 44.1 kHz, but claims to support 8-48 kHz on capture. Config 2 only uses 44.1 and 48 kHz, but claims to support 8-48 kHz on both capture and playback. The card in reality, according to specs, supports up to 96 kHz. According to lspci (attached), it supports everything within the 8-96 kHz range. Bus 001 Device 010: ID 0763:2012 Midiman Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 1.10 bDeviceClass 0 (Defined at Interface level) bDeviceSubClass 0 bDeviceProtocol 0 bMaxPacketSize0 8 idVendor 0x0763 Midiman idProduct 0x2012 bcdDevice 1.00 iManufacturer 1 M-Audio iProduct 2 FastTrack Pro iSerial 0 bNumConfigurations 2 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 326 bNumInterfaces 5 bConfigurationValue 1 iConfiguration 0 bmAttributes 0x80 MaxPower 200mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 0 bInterfaceClass 1 Audio bInterfaceSubClass 1 Control Device bInterfaceProtocol 0 iInterface 2 FastTrack Pro AudioControl Interface Descriptor: bLength 12 bDescriptorType 36 bDescriptorSubtype 1 (HEADER) bcdADC 1.00 wTotalLength 75 bInCollection 4 baInterfaceNr( 0) 2 baInterfaceNr( 1) 3 baInterfaceNr( 2) 4 baInterfaceNr( 3) 1 AudioControl Interface Descriptor: bLength 12 bDescriptorType 36 bDescriptorSubtype 2 (INPUT_TERMINAL) bTerminalID 5 wTerminalType 0x0101 USB Streaming bAssocTerminal 0 bNrChannels 2 wChannelConfig 0x0003 Left Front (L) Right Front (R) iChannelNames 0 iTerminal 0 AudioControl Interface Descriptor: bLength 9 bDescriptorType 36 bDescriptorSubtype 3 (OUTPUT_TERMINAL) bTerminalID 6 wTerminalType 0x0601 Analog Connector bAssocTerminal 0 bSourceID 5 iTerminal 0 AudioControl Interface Descriptor: bLength 12 bDescriptorType 36 bDescriptorSubtype 2 (INPUT_TERMINAL) bTerminalID 7 wTerminalType 0x0101 USB Streaming bAssocTerminal 0 bNrChannels 2 wChannelConfig 0x0003 Left Front (L) Right Front (R) iChannelNames 0 iTerminal 0 AudioControl Interface Descriptor: bLength 9 bDescriptorType 36 bDescriptorSubtype 3 (OUTPUT_TERMINAL) bTerminalID 8 wTerminalType 0x0601 Analog Connector bAssocTerminal 0 bSourceID 7 iTerminal 0 AudioControl Interface Descriptor: bLength 12 bDescriptorType 36 bDescriptorSubtype 2 (INPUT_TERMINAL) bTerminalID 1 wTerminalType 0x0601 Analog Connector bAssocTerminal 0 bNrChannels 2 wChannelConfig 0x0003 Left Front (L) Right Front (R) iChannelNames 0 iTerminal 0 AudioControl Interface Descriptor: bLength 9 bDescriptorType 36 bDescriptorSubtype 3 (OUTPUT_TERMINAL) bTerminalID 2 wTerminalType 0x0101 USB Streaming bAssocTerminal 0 bSourceID 1 iTerminal 0 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 0 bNumEndpoints 2 bInterfaceClass 1 Audio bInterfaceSubClass 3 MIDI Streaming bInterfaceProtocol 0 iInterface 2 FastTrack Pro MIDIStreaming Interface Descriptor: bLength 7 bDescriptorType 36 bDescriptorSubtype 1 (HEADER) bcdADC 1.00 wTotalLength 65 MIDIStreaming Interface Descriptor: bLength 6 bDescriptorType 36 bDescriptorSubtype 2 (MIDI_IN_JACK) bJackType 1 Embedded bJackID 1 iJack 0 MIDIStreaming Interface Descriptor: bLength 6 bDescriptorType 36 bDescriptorSubtype 2 (MIDI_IN_JACK) bJackType 2 External bJackID 2 iJack 0 MIDIStreaming Interface Descriptor: bLength 9 bDescriptorType 36 bDescriptorSubtype 3 (MIDI_OUT_JACK) bJackType 1 Embedded bJackID 3 bNrInputPins 1 baSourceID( 0) 2 BaSourcePin( 0) 1 iJack 0 MIDIStreaming Interface Descriptor: bLength 9 bDescriptorType 36 bDescriptorSubtype 3 (MIDI_OUT_JACK) bJackType 2 External bJackID 4 bNrInputPins 1 baSourceID( 0) 1 BaSourcePin( 0) 1 iJack 0 Endpoint Descriptor: bLength 9 bDescriptorType 5 bEndpointAddress 0x01 EP 1 OUT bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0010 1x 16 bytes bInterval 0 bRefresh 0 bSynchAddress 0 MIDIStreaming Endpoint Descriptor: bLength 5 bDescriptorType 37 bDescriptorSubtype 1 (GENERAL) bNumEmbMIDIJack 1 baAssocJackID( 0) 1 Endpoint Descriptor: bLength 9 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0010 1x 16 bytes bInterval 0 bRefresh 0 bSynchAddress 0 MIDIStreaming Endpoint Descriptor: bLength 5 bDescriptorType 37 bDescriptorSubtype 1 (GENERAL) bNumEmbMIDIJack 1 baAssocJackID( 0) 3 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 2 bAlternateSetting 0 bNumEndpoints 0 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 0 iInterface 0 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 2 bAlternateSetting 1 bNumEndpoints 1 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 0 iInterface 0 AudioStreaming Interface Descriptor: bLength 7 bDescriptorType 36 bDescriptorSubtype 1 (AS_GENERAL) bTerminalLink 5 bDelay 1 frames wFormatTag 1 PCM AudioStreaming Interface Descriptor: bLength 11 bDescriptorType 36 bDescriptorSubtype 2 (FORMAT_TYPE) bFormatType 1 (FORMAT_TYPE_I) bNrChannels 2 bSubframeSize 2 bBitResolution 16 bSamFreqType 1 Discrete tSamFreq[ 0] 44100 Endpoint Descriptor: bLength 9 bDescriptorType 5 bEndpointAddress 0x03 EP 3 OUT bmAttributes 9 Transfer Type Isochronous Synch Type Adaptive Usage Type Data wMaxPacketSize 0x00c8 1x 200 bytes bInterval 1 bRefresh 0 bSynchAddress 0 AudioControl Endpoint Descriptor: bLength 7 bDescriptorType 37 bDescriptorSubtype 1 (EP_GENERAL) bmAttributes 0x01 Sampling Frequency bLockDelayUnits 0 Undefined wLockDelay 0 Undefined Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 3 bAlternateSetting 0 bNumEndpoints 0 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 0 iInterface 0 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 3 bAlternateSetting 1 bNumEndpoints 1 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 0 iInterface 0 AudioStreaming Interface Descriptor: bLength 7 bDescriptorType 36 bDescriptorSubtype 1 (AS_GENERAL) bTerminalLink 7 bDelay 1 frames wFormatTag 1 PCM AudioStreaming Interface Descriptor: bLength 11 bDescriptorType 36 bDescriptorSubtype 2 (FORMAT_TYPE) bFormatType 1 (FORMAT_TYPE_I) bNrChannels 2 bSubframeSize 2 bBitResolution 16 bSamFreqType 1 Discrete tSamFreq[ 0] 44100 Endpoint Descriptor: bLength 9 bDescriptorType 5 bEndpointAddress 0x04 EP 4 OUT bmAttributes 9 Transfer Type Isochronous Synch Type Adaptive Usage Type Data wMaxPacketSize 0x00c8 1x 200 bytes bInterval 1 bRefresh 0 bSynchAddress 0 AudioControl Endpoint Descriptor: bLength 7 bDescriptorType 37 bDescriptorSubtype 1 (EP_GENERAL) bmAttributes 0x01 Sampling Frequency bLockDelayUnits 0 Undefined wLockDelay 0 Undefined Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 4 bAlternateSetting 0 bNumEndpoints 0 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 0 iInterface 0 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 4 bAlternateSetting 1 bNumEndpoints 1 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 0 iInterface 0 AudioStreaming Interface Descriptor: bLength 7 bDescriptorType 36 bDescriptorSubtype 1 (AS_GENERAL) bTerminalLink 2 bDelay 1 frames wFormatTag 1 PCM AudioStreaming Interface Descriptor: bLength 14 bDescriptorType 36 bDescriptorSubtype 2 (FORMAT_TYPE) bFormatType 1 (FORMAT_TYPE_I) bNrChannels 2 bSubframeSize 2 bBitResolution 16 bSamFreqType 0 Continuous tLowerSamFreq 8000 tUpperSamFreq 48000 Endpoint Descriptor: bLength 9 bDescriptorType 5 bEndpointAddress 0x85 EP 5 IN bmAttributes 5 Transfer Type Isochronous Synch Type Asynchronous Usage Type Data wMaxPacketSize 0x00c8 1x 200 bytes bInterval 1 bRefresh 0 bSynchAddress 0 AudioControl Endpoint Descriptor: bLength 7 bDescriptorType 37 bDescriptorSubtype 1 (EP_GENERAL) bmAttributes 0x00 bLockDelayUnits 0 Undefined wLockDelay 0 Undefined Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 1165 bNumInterfaces 6 bConfigurationValue 2 iConfiguration 0 bmAttributes 0x80 MaxPower 200mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 0 bInterfaceClass 1 Audio bInterfaceSubClass 1 Control Device bInterfaceProtocol 0 iInterface 2 FastTrack Pro AudioControl Interface Descriptor: bLength 13 bDescriptorType 36 bDescriptorSubtype 1 (HEADER) bcdADC 1.00 wTotalLength 97 bInCollection 5 baInterfaceNr( 0) 2 baInterfaceNr( 1) 3 baInterfaceNr( 2) 4 baInterfaceNr( 3) 5 baInterfaceNr( 4) 1 AudioControl Interface Descriptor: bLength 12 bDescriptorType 36 bDescriptorSubtype 2 (INPUT_TERMINAL) bTerminalID 5 wTerminalType 0x0101 USB Streaming bAssocTerminal 0 bNrChannels 2 wChannelConfig 0x0003 Left Front (L) Right Front (R) iChannelNames 0 iTerminal 0 AudioControl Interface Descriptor: bLength 9 bDescriptorType 36 bDescriptorSubtype 3 (OUTPUT_TERMINAL) bTerminalID 6 wTerminalType 0x0601 Analog Connector bAssocTerminal 0 bSourceID 5 iTerminal 0 AudioControl Interface Descriptor: bLength 12 bDescriptorType 36 bDescriptorSubtype 2 (INPUT_TERMINAL) bTerminalID 7 wTerminalType 0x0101 USB Streaming bAssocTerminal 0 bNrChannels 2 wChannelConfig 0x0003 Left Front (L) Right Front (R) iChannelNames 0 iTerminal 0 AudioControl Interface Descriptor: bLength 9 bDescriptorType 36 bDescriptorSubtype 3 (OUTPUT_TERMINAL) bTerminalID 8 wTerminalType 0x0601 Analog Connector bAssocTerminal 0 bSourceID 7 iTerminal 0 AudioControl Interface Descriptor: bLength 12 bDescriptorType 36 bDescriptorSubtype 2 (INPUT_TERMINAL) bTerminalID 1 wTerminalType 0x0601 Analog Connector bAssocTerminal 0 bNrChannels 2 wChannelConfig 0x0003 Left Front (L) Right Front (R) iChannelNames 0 iTerminal 0 AudioControl Interface Descriptor: bLength 9 bDescriptorType 36 bDescriptorSubtype 3 (OUTPUT_TERMINAL) bTerminalID 2 wTerminalType 0x0101 USB Streaming bAssocTerminal 0 bSourceID 1 iTerminal 0 AudioControl Interface Descriptor: bLength 12 bDescriptorType 36 bDescriptorSubtype 2 (INPUT_TERMINAL) bTerminalID 3 wTerminalType 0x0601 Analog Connector bAssocTerminal 0 bNrChannels 2 wChannelConfig 0x0003 Left Front (L) Right Front (R) iChannelNames 0 iTerminal 0 AudioControl Interface Descriptor: bLength 9 bDescriptorType 36 bDescriptorSubtype 3 (OUTPUT_TERMINAL) bTerminalID 4 wTerminalType 0x0101 USB Streaming bAssocTerminal 0 bSourceID 3 iTerminal 0 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 0 bNumEndpoints 2 bInterfaceClass 1 Audio bInterfaceSubClass 3 MIDI Streaming bInterfaceProtocol 0 iInterface 2 FastTrack Pro MIDIStreaming Interface Descriptor: bLength 7 bDescriptorType 36 bDescriptorSubtype 1 (HEADER) bcdADC 1.00 wTotalLength 65 MIDIStreaming Interface Descriptor: bLength 6 bDescriptorType 36 bDescriptorSubtype 2 (MIDI_IN_JACK) bJackType 1 Embedded bJackID 1 iJack 0 MIDIStreaming Interface Descriptor: bLength 6 bDescriptorType 36 bDescriptorSubtype 2 (MIDI_IN_JACK) bJackType 2 External bJackID 2 iJack 0 MIDIStreaming Interface Descriptor: bLength 9 bDescriptorType 36 bDescriptorSubtype 3 (MIDI_OUT_JACK) bJackType 1 Embedded bJackID 3 bNrInputPins 1 baSourceID( 0) 2 BaSourcePin( 0) 1 iJack 0 MIDIStreaming Interface Descriptor: bLength 9 bDescriptorType 36 bDescriptorSubtype 3 (MIDI_OUT_JACK) bJackType 2 External bJackID 4 bNrInputPins 1 baSourceID( 0) 1 BaSourcePin( 0) 1 iJack 0 Endpoint Descriptor: bLength 9 bDescriptorType 5 bEndpointAddress 0x01 EP 1 OUT bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0010 1x 16 bytes bInterval 0 bRefresh 0 bSynchAddress 0 MIDIStreaming Endpoint Descriptor: bLength 5 bDescriptorType 37 bDescriptorSubtype 1 (GENERAL) bNumEmbMIDIJack 1 baAssocJackID( 0) 1 Endpoint Descriptor: bLength 9 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0010 1x 16 bytes bInterval 0 bRefresh 0 bSynchAddress 0 MIDIStreaming Endpoint Descriptor: bLength 5 bDescriptorType 37 bDescriptorSubtype 1 (GENERAL) bNumEmbMIDIJack 1 baAssocJackID( 0) 3 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 2 bAlternateSetting 0 bNumEndpoints 0 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 0 iInterface 0 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 2 bAlternateSetting 1 bNumEndpoints 1 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 0 iInterface 0 AudioStreaming Interface Descriptor: bLength 7 bDescriptorType 36 bDescriptorSubtype 1 (AS_GENERAL) bTerminalLink 5 bDelay 1 frames wFormatTag 1 PCM AudioStreaming Interface Descriptor: bLength 14 bDescriptorType 36 bDescriptorSubtype 2 (FORMAT_TYPE) bFormatType 1 (FORMAT_TYPE_I) bNrChannels 2 bSubframeSize 2 bBitResolution 16 bSamFreqType 2 Discrete tSamFreq[ 0] 44100 tSamFreq[ 1] 48000 Endpoint Descriptor: bLength 9 bDescriptorType 5 bEndpointAddress 0x03 EP 3 OUT bmAttributes 9 Transfer Type Isochronous Synch Type Adaptive Usage Type Data wMaxPacketSize 0x00c8 1x 200 bytes bInterval 1 bRefresh 0 bSynchAddress 0 AudioControl Endpoint Descriptor: bLength 7 bDescriptorType 37 bDescriptorSubtype 1 (EP_GENERAL) bmAttributes 0x01 Sampling Frequency bLockDelayUnits 0 Undefined wLockDelay 0 Undefined Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 2 bAlternateSetting 2 bNumEndpoints 1 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 0 iInterface 0 AudioStreaming Interface Descriptor: bLength 7 bDescriptorType 36 bDescriptorSubtype 1 (AS_GENERAL) bTerminalLink 5 bDelay 1 frames wFormatTag 1 PCM AudioStreaming Interface Descriptor: bLength 14 bDescriptorType 36 bDescriptorSubtype 2 (FORMAT_TYPE) bFormatType 1 (FORMAT_TYPE_I) bNrChannels 2 bSubframeSize 3 bBitResolution 24 bSamFreqType 2 Discrete tSamFreq[ 0] 44100 tSamFreq[ 1] 48000 Endpoint Descriptor: bLength 9 bDescriptorType 5 bEndpointAddress 0x03 EP 3 OUT bmAttributes 9 Transfer Type Isochronous Synch Type Adaptive Usage Type Data wMaxPacketSize 0x0128 1x 296 bytes bInterval 1 bRefresh 0 bSynchAddress 0 AudioControl Endpoint Descriptor: bLength 7 bDescriptorType 37 bDescriptorSubtype 1 (EP_GENERAL) bmAttributes 0x01 Sampling Frequency bLockDelayUnits 0 Undefined wLockDelay 0 Undefined Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 2 bAlternateSetting 3 bNumEndpoints 1 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 0 iInterface 0 AudioStreaming Interface Descriptor: bLength 7 bDescriptorType 36 bDescriptorSubtype 1 (AS_GENERAL) bTerminalLink 5 bDelay 1 frames wFormatTag 1 PCM AudioStreaming Interface Descriptor: bLength 20 bDescriptorType 36 bDescriptorSubtype 2 (FORMAT_TYPE) bFormatType 1 (FORMAT_TYPE_I) bNrChannels 2 bSubframeSize 3 bBitResolution 24 bSamFreqType 4 Discrete tSamFreq[ 0] 44100 tSamFreq[ 1] 48000 tSamFreq[ 2] 88200 tSamFreq[ 3] 96000 Endpoint Descriptor: bLength 9 bDescriptorType 5 bEndpointAddress 0x03 EP 3 OUT bmAttributes 9 Transfer Type Isochronous Synch Type Adaptive Usage Type Data wMaxPacketSize 0x0248 1x 584 bytes bInterval 1 bRefresh 0 bSynchAddress 0 AudioControl Endpoint Descriptor: bLength 7 bDescriptorType 37 bDescriptorSubtype 1 (EP_GENERAL) bmAttributes 0x01 Sampling Frequency bLockDelayUnits 0 Undefined wLockDelay 0 Undefined Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 2 bAlternateSetting 4 bNumEndpoints 2 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 0 iInterface 0 AudioStreaming Interface Descriptor: bLength 7 bDescriptorType 36 bDescriptorSubtype 1 (AS_GENERAL) bTerminalLink 5 bDelay 1 frames wFormatTag 1 PCM AudioStreaming Interface Descriptor: bLength 14 bDescriptorType 36 bDescriptorSubtype 2 (FORMAT_TYPE) bFormatType 1 (FORMAT_TYPE_I) bNrChannels 2 bSubframeSize 2 bBitResolution 16 bSamFreqType 0 Continuous tLowerSamFreq 8000 tUpperSamFreq 48000 Endpoint Descriptor: bLength 9 bDescriptorType 5 bEndpointAddress 0x03 EP 3 OUT bmAttributes 5 Transfer Type Isochronous Synch Type Asynchronous Usage Type Data wMaxPacketSize 0x00c8 1x 200 bytes bInterval 1 bRefresh 0 bSynchAddress 131 AudioControl Endpoint Descriptor: bLength 7 bDescriptorType 37 bDescriptorSubtype 1 (EP_GENERAL) bmAttributes 0x00 bLockDelayUnits 0 Undefined wLockDelay 0 Undefined Endpoint Descriptor: bLength 9 bDescriptorType 5 bEndpointAddress 0x83 EP 3 IN bmAttributes 1 Transfer Type Isochronous Synch Type None Usage Type Data wMaxPacketSize 0x0003 1x 3 bytes bInterval 1 bRefresh 6 bSynchAddress 0 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 2 bAlternateSetting 5 bNumEndpoints 2 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 0 iInterface 0 AudioStreaming Interface Descriptor: bLength 7 bDescriptorType 36 bDescriptorSubtype 1 (AS_GENERAL) bTerminalLink 5 bDelay 1 frames wFormatTag 1 PCM AudioStreaming Interface Descriptor: bLength 14 bDescriptorType 36 bDescriptorSubtype 2 (FORMAT_TYPE) bFormatType 1 (FORMAT_TYPE_I) bNrChannels 2 bSubframeSize 3 bBitResolution 24 bSamFreqType 0 Continuous tLowerSamFreq 8000 tUpperSamFreq 48000 Endpoint Descriptor: bLength 9 bDescriptorType 5 bEndpointAddress 0x03 EP 3 OUT bmAttributes 5 Transfer Type Isochronous Synch Type Asynchronous Usage Type Data wMaxPacketSize 0x0128 1x 296 bytes bInterval 1 bRefresh 0 bSynchAddress 131 AudioControl Endpoint Descriptor: bLength 7 bDescriptorType 37 bDescriptorSubtype 1 (EP_GENERAL) bmAttributes 0x00 bLockDelayUnits 0 Undefined wLockDelay 0 Undefined Endpoint Descriptor: bLength 9 bDescriptorType 5 bEndpointAddress 0x83 EP 3 IN bmAttributes 1 Transfer Type Isochronous Synch Type None Usage Type Data wMaxPacketSize 0x0003 1x 3 bytes bInterval 1 bRefresh 6 bSynchAddress 0 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 2 bAlternateSetting 6 bNumEndpoints 2 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 0 iInterface 0 AudioStreaming Interface Descriptor: bLength 7 bDescriptorType 36 bDescriptorSubtype 1 (AS_GENERAL) bTerminalLink 5 bDelay 1 frames wFormatTag 1 PCM AudioStreaming Interface Descriptor: bLength 14 bDescriptorType 36 bDescriptorSubtype 2 (FORMAT_TYPE) bFormatType 1 (FORMAT_TYPE_I) bNrChannels 2 bSubframeSize 3 bBitResolution 24 bSamFreqType 0 Continuous tLowerSamFreq 8000 tUpperSamFreq 96000 Endpoint Descriptor: bLength 9 bDescriptorType 5 bEndpointAddress 0x03 EP 3 OUT bmAttributes 5 Transfer Type Isochronous Synch Type Asynchronous Usage Type Data wMaxPacketSize 0x0248 1x 584 bytes bInterval 1 bRefresh 0 bSynchAddress 131 AudioControl Endpoint Descriptor: bLength 7 bDescriptorType 37 bDescriptorSubtype 1 (EP_GENERAL) bmAttributes 0x00 bLockDelayUnits 0 Undefined wLockDelay 0 Undefined Endpoint Descriptor: bLength 9 bDescriptorType 5 bEndpointAddress 0x83 EP 3 IN bmAttributes 1 Transfer Type Isochronous Synch Type None Usage Type Data wMaxPacketSize 0x0003 1x 3 bytes bInterval 1 bRefresh 6 bSynchAddress 0 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 3 bAlternateSetting 0 bNumEndpoints 0 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 0 iInterface 0 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 3 bAlternateSetting 1 bNumEndpoints 1 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 0 iInterface 0 AudioStreaming Interface Descriptor: bLength 7 bDescriptorType 36 bDescriptorSubtype 1 (AS_GENERAL) bTerminalLink 7 bDelay 1 frames wFormatTag 1 PCM AudioStreaming Interface Descriptor: bLength 14 bDescriptorType 36 bDescriptorSubtype 2 (FORMAT_TYPE) bFormatType 1 (FORMAT_TYPE_I) bNrChannels 2 bSubframeSize 2 bBitResolution 16 bSamFreqType 2 Discrete tSamFreq[ 0] 44100 tSamFreq[ 1] 48000 Endpoint Descriptor: bLength 9 bDescriptorType 5 bEndpointAddress 0x04 EP 4 OUT bmAttributes 9 Transfer Type Isochronous Synch Type Adaptive Usage Type Data wMaxPacketSize 0x00c8 1x 200 bytes bInterval 1 bRefresh 0 bSynchAddress 0 AudioControl Endpoint Descriptor: bLength 7 bDescriptorType 37 bDescriptorSubtype 1 (EP_GENERAL) bmAttributes 0x01 Sampling Frequency bLockDelayUnits 0 Undefined wLockDelay 0 Undefined Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 3 bAlternateSetting 2 bNumEndpoints 1 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 0 iInterface 0 AudioStreaming Interface Descriptor: bLength 7 bDescriptorType 36 bDescriptorSubtype 1 (AS_GENERAL) bTerminalLink 7 bDelay 1 frames wFormatTag 1 PCM AudioStreaming Interface Descriptor: bLength 14 bDescriptorType 36 bDescriptorSubtype 2 (FORMAT_TYPE) bFormatType 1 (FORMAT_TYPE_I) bNrChannels 2 bSubframeSize 3 bBitResolution 24 bSamFreqType 2 Discrete tSamFreq[ 0] 44100 tSamFreq[ 1] 48000 Endpoint Descriptor: bLength 9 bDescriptorType 5 bEndpointAddress 0x04 EP 4 OUT bmAttributes 9 Transfer Type Isochronous Synch Type Adaptive Usage Type Data wMaxPacketSize 0x0128 1x 296 bytes bInterval 1 bRefresh 0 bSynchAddress 0 AudioControl Endpoint Descriptor: bLength 7 bDescriptorType 37 bDescriptorSubtype 1 (EP_GENERAL) bmAttributes 0x01 Sampling Frequency bLockDelayUnits 0 Undefined wLockDelay 0 Undefined Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 3 bAlternateSetting 3 bNumEndpoints 1 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 0 iInterface 0 AudioStreaming Interface Descriptor: bLength 7 bDescriptorType 36 bDescriptorSubtype 1 (AS_GENERAL) bTerminalLink 7 bDelay 1 frames wFormatTag 1 PCM AudioStreaming Interface Descriptor: bLength 20 bDescriptorType 36 bDescriptorSubtype 2 (FORMAT_TYPE) bFormatType 1 (FORMAT_TYPE_I) bNrChannels 2 bSubframeSize 3 bBitResolution 24 bSamFreqType 4 Discrete tSamFreq[ 0] 44100 tSamFreq[ 1] 48000 tSamFreq[ 2] 88200 tSamFreq[ 3] 96000 Endpoint Descriptor: bLength 9 bDescriptorType 5 bEndpointAddress 0x04 EP 4 OUT bmAttributes 9 Transfer Type Isochronous Synch Type Adaptive Usage Type Data wMaxPacketSize 0x0248 1x 584 bytes bInterval 1 bRefresh 0 bSynchAddress 0 AudioControl Endpoint Descriptor: bLength 7 bDescriptorType 37 bDescriptorSubtype 1 (EP_GENERAL) bmAttributes 0x01 Sampling Frequency bLockDelayUnits 0 Undefined wLockDelay 0 Undefined Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 3 bAlternateSetting 4 bNumEndpoints 2 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 0 iInterface 0 AudioStreaming Interface Descriptor: bLength 7 bDescriptorType 36 bDescriptorSubtype 1 (AS_GENERAL) bTerminalLink 7 bDelay 1 frames wFormatTag 1 PCM AudioStreaming Interface Descriptor: bLength 14 bDescriptorType 36 bDescriptorSubtype 2 (FORMAT_TYPE) bFormatType 1 (FORMAT_TYPE_I) bNrChannels 2 bSubframeSize 2 bBitResolution 16 bSamFreqType 0 Continuous tLowerSamFreq 8000 tUpperSamFreq 48000 Endpoint Descriptor: bLength 9 bDescriptorType 5 bEndpointAddress 0x04 EP 4 OUT bmAttributes 5 Transfer Type Isochronous Synch Type Asynchronous Usage Type Data wMaxPacketSize 0x00c8 1x 200 bytes bInterval 1 bRefresh 0 bSynchAddress 132 AudioControl Endpoint Descriptor: bLength 7 bDescriptorType 37 bDescriptorSubtype 1 (EP_GENERAL) bmAttributes 0x00 bLockDelayUnits 0 Undefined wLockDelay 0 Undefined Endpoint Descriptor: bLength 9 bDescriptorType 5 bEndpointAddress 0x84 EP 4 IN bmAttributes 1 Transfer Type Isochronous Synch Type None Usage Type Data wMaxPacketSize 0x0003 1x 3 bytes bInterval 1 bRefresh 6 bSynchAddress 0 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 3 bAlternateSetting 5 bNumEndpoints 2 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 0 iInterface 0 AudioStreaming Interface Descriptor: bLength 7 bDescriptorType 36 bDescriptorSubtype 1 (AS_GENERAL) bTerminalLink 7 bDelay 1 frames wFormatTag 1 PCM AudioStreaming Interface Descriptor: bLength 14 bDescriptorType 36 bDescriptorSubtype 2 (FORMAT_TYPE) bFormatType 1 (FORMAT_TYPE_I) bNrChannels 2 bSubframeSize 3 bBitResolution 24 bSamFreqType 0 Continuous tLowerSamFreq 8000 tUpperSamFreq 48000 Endpoint Descriptor: bLength 9 bDescriptorType 5 bEndpointAddress 0x04 EP 4 OUT bmAttributes 5 Transfer Type Isochronous Synch Type Asynchronous Usage Type Data wMaxPacketSize 0x0128 1x 296 bytes bInterval 1 bRefresh 0 bSynchAddress 132 AudioControl Endpoint Descriptor: bLength 7 bDescriptorType 37 bDescriptorSubtype 1 (EP_GENERAL) bmAttributes 0x00 bLockDelayUnits 0 Undefined wLockDelay 0 Undefined Endpoint Descriptor: bLength 9 bDescriptorType 5 bEndpointAddress 0x84 EP 4 IN bmAttributes 1 Transfer Type Isochronous Synch Type None Usage Type Data wMaxPacketSize 0x0003 1x 3 bytes bInterval 1 bRefresh 6 bSynchAddress 0 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 3 bAlternateSetting 6 bNumEndpoints 2 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 0 iInterface 0 AudioStreaming Interface Descriptor: bLength 7 bDescriptorType 36 bDescriptorSubtype 1 (AS_GENERAL) bTerminalLink 7 bDelay 1 frames wFormatTag 1 PCM AudioStreaming Interface Descriptor: bLength 14 bDescriptorType 36 bDescriptorSubtype 2 (FORMAT_TYPE) bFormatType 1 (FORMAT_TYPE_I) bNrChannels 2 bSubframeSize 3 bBitResolution 24 bSamFreqType 0 Continuous tLowerSamFreq 8000 tUpperSamFreq 96000 Endpoint Descriptor: bLength 9 bDescriptorType 5 bEndpointAddress 0x04 EP 4 OUT bmAttributes 5 Transfer Type Isochronous Synch Type Asynchronous Usage Type Data wMaxPacketSize 0x0248 1x 584 bytes bInterval 1 bRefresh 0 bSynchAddress 132 AudioControl Endpoint Descriptor: bLength 7 bDescriptorType 37 bDescriptorSubtype 1 (EP_GENERAL) bmAttributes 0x00 bLockDelayUnits 0 Undefined wLockDelay 0 Undefined Endpoint Descriptor: bLength 9 bDescriptorType 5 bEndpointAddress 0x84 EP 4 IN bmAttributes 1 Transfer Type Isochronous Synch Type None Usage Type Data wMaxPacketSize 0x0003 1x 3 bytes bInterval 1 bRefresh 6 bSynchAddress 0 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 3 bAlternateSetting 7 bNumEndpoints 1 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 0 iInterface 0 AudioStreaming Interface Descriptor: bLength 7 bDescriptorType 36 bDescriptorSubtype 1 (AS_GENERAL) bTerminalLink 7 bDelay 1 frames wFormatTag 8193 IEC1937_AC-3 AudioStreaming Interface Descriptor: bLength 14 bDescriptorType 36 bDescriptorSubtype 2 (FORMAT_TYPE) bFormatType 3 (FORMAT_TYPE_III) bNrChannels 2 bSubframeSize 2 bBitResolution 16 bSamFreqType 2 Discrete tSamFreq[ 0] 44100 tSamFreq[ 1] 48000 Endpoint Descriptor: bLength 9 bDescriptorType 5 bEndpointAddress 0x04 EP 4 OUT bmAttributes 9 Transfer Type Isochronous Synch Type Adaptive Usage Type Data wMaxPacketSize 0x00c8 1x 200 bytes bInterval 1 bRefresh 0 bSynchAddress 0 AudioControl Endpoint Descriptor: bLength 7 bDescriptorType 37 bDescriptorSubtype 1 (EP_GENERAL) bmAttributes 0x01 Sampling Frequency bLockDelayUnits 0 Undefined wLockDelay 0 Undefined Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 4 bAlternateSetting 0 bNumEndpoints 0 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 0 iInterface 0 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 4 bAlternateSetting 1 bNumEndpoints 1 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 0 iInterface 0 AudioStreaming Interface Descriptor: bLength 7 bDescriptorType 36 bDescriptorSubtype 1 (AS_GENERAL) bTerminalLink 2 bDelay 1 frames wFormatTag 1 PCM AudioStreaming Interface Descriptor: bLength 14 bDescriptorType 36 bDescriptorSubtype 2 (FORMAT_TYPE) bFormatType 1 (FORMAT_TYPE_I) bNrChannels 2 bSubframeSize 2 bBitResolution 16 bSamFreqType 0 Continuous tLowerSamFreq 8000 tUpperSamFreq 48000 Endpoint Descriptor: bLength 9 bDescriptorType 5 bEndpointAddress 0x85 EP 5 IN bmAttributes 5 Transfer Type Isochronous Synch Type Asynchronous Usage Type Data wMaxPacketSize 0x00c8 1x 200 bytes bInterval 1 bRefresh 0 bSynchAddress 0 AudioControl Endpoint Descriptor: bLength 7 bDescriptorType 37 bDescriptorSubtype 1 (EP_GENERAL) bmAttributes 0x00 bLockDelayUnits 0 Undefined wLockDelay 0 Undefined Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 4 bAlternateSetting 2 bNumEndpoints 1 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 0 iInterface 0 AudioStreaming Interface Descriptor: bLength 7 bDescriptorType 36 bDescriptorSubtype 1 (AS_GENERAL) bTerminalLink 2 bDelay 1 frames wFormatTag 1 PCM AudioStreaming Interface Descriptor: bLength 14 bDescriptorType 36 bDescriptorSubtype 2 (FORMAT_TYPE) bFormatType 1 (FORMAT_TYPE_I) bNrChannels 2 bSubframeSize 3 bBitResolution 24 bSamFreqType 0 Continuous tLowerSamFreq 8000 tUpperSamFreq 48000 Endpoint Descriptor: bLength 9 bDescriptorType 5 bEndpointAddress 0x85 EP 5 IN bmAttributes 5 Transfer Type Isochronous Synch Type Asynchronous Usage Type Data wMaxPacketSize 0x0128 1x 296 bytes bInterval 1 bRefresh 0 bSynchAddress 0 AudioControl Endpoint Descriptor: bLength 7 bDescriptorType 37 bDescriptorSubtype 1 (EP_GENERAL) bmAttributes 0x00 bLockDelayUnits 0 Undefined wLockDelay 0 Undefined Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 4 bAlternateSetting 3 bNumEndpoints 1 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 0 iInterface 0 AudioStreaming Interface Descriptor: bLength 7 bDescriptorType 36 bDescriptorSubtype 1 (AS_GENERAL) bTerminalLink 2 bDelay 1 frames wFormatTag 1 PCM AudioStreaming Interface Descriptor: bLength 14 bDescriptorType 36 bDescriptorSubtype 2 (FORMAT_TYPE) bFormatType 1 (FORMAT_TYPE_I) bNrChannels 2 bSubframeSize 3 bBitResolution 24 bSamFreqType 0 Continuous tLowerSamFreq 8000 tUpperSamFreq 96000 Endpoint Descriptor: bLength 9 bDescriptorType 5 bEndpointAddress 0x85 EP 5 IN bmAttributes 5 Transfer Type Isochronous Synch Type Asynchronous Usage Type Data wMaxPacketSize 0x0248 1x 584 bytes bInterval 1 bRefresh 0 bSynchAddress 0 AudioControl Endpoint Descriptor: bLength 7 bDescriptorType 37 bDescriptorSubtype 1 (EP_GENERAL) bmAttributes 0x00 bLockDelayUnits 0 Undefined wLockDelay 0 Undefined Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 5 bAlternateSetting 0 bNumEndpoints 0 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 0 iInterface 0 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 5 bAlternateSetting 1 bNumEndpoints 1 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 0 iInterface 0 AudioStreaming Interface Descriptor: bLength 7 bDescriptorType 36 bDescriptorSubtype 1 (AS_GENERAL) bTerminalLink 4 bDelay 1 frames wFormatTag 1 PCM AudioStreaming Interface Descriptor: bLength 14 bDescriptorType 36 bDescriptorSubtype 2 (FORMAT_TYPE) bFormatType 1 (FORMAT_TYPE_I) bNrChannels 2 bSubframeSize 2 bBitResolution 16 bSamFreqType 0 Continuous tLowerSamFreq 8000 tUpperSamFreq 48000 Endpoint Descriptor: bLength 9 bDescriptorType 5 bEndpointAddress 0x86 EP 6 IN bmAttributes 5 Transfer Type Isochronous Synch Type Asynchronous Usage Type Data wMaxPacketSize 0x00c8 1x 200 bytes bInterval 1 bRefresh 0 bSynchAddress 0 AudioControl Endpoint Descriptor: bLength 7 bDescriptorType 37 bDescriptorSubtype 1 (EP_GENERAL) bmAttributes 0x00 bLockDelayUnits 0 Undefined wLockDelay 0 Undefined Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 5 bAlternateSetting 2 bNumEndpoints 1 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 0 iInterface 0 AudioStreaming Interface Descriptor: bLength 7 bDescriptorType 36 bDescriptorSubtype 1 (AS_GENERAL) bTerminalLink 4 bDelay 1 frames wFormatTag 1 PCM AudioStreaming Interface Descriptor: bLength 14 bDescriptorType 36 bDescriptorSubtype 2 (FORMAT_TYPE) bFormatType 1 (FORMAT_TYPE_I) bNrChannels 2 bSubframeSize 3 bBitResolution 24 bSamFreqType 0 Continuous tLowerSamFreq 8000 tUpperSamFreq 48000 Endpoint Descriptor: bLength 9 bDescriptorType 5 bEndpointAddress 0x86 EP 6 IN bmAttributes 5 Transfer Type Isochronous Synch Type Asynchronous Usage Type Data wMaxPacketSize 0x0128 1x 296 bytes bInterval 1 bRefresh 0 bSynchAddress 0 AudioControl Endpoint Descriptor: bLength 7 bDescriptorType 37 bDescriptorSubtype 1 (EP_GENERAL) bmAttributes 0x00 bLockDelayUnits 0 Undefined wLockDelay 0 Undefined Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 5 bAlternateSetting 3 bNumEndpoints 1 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 0 iInterface 0 AudioStreaming Interface Descriptor: bLength 7 bDescriptorType 36 bDescriptorSubtype 1 (AS_GENERAL) bTerminalLink 4 bDelay 1 frames wFormatTag 1 PCM AudioStreaming Interface Descriptor: bLength 14 bDescriptorType 36 bDescriptorSubtype 2 (FORMAT_TYPE) bFormatType 1 (FORMAT_TYPE_I) bNrChannels 2 bSubframeSize 3 bBitResolution 24 bSamFreqType 0 Continuous tLowerSamFreq 8000 tUpperSamFreq 96000 Endpoint Descriptor: bLength 9 bDescriptorType 5 bEndpointAddress 0x86 EP 6 IN bmAttributes 5 Transfer Type Isochronous Synch Type Asynchronous Usage Type Data wMaxPacketSize 0x0248 1x 584 bytes bInterval 1 bRefresh 0 bSynchAddress 0 AudioControl Endpoint Descriptor: bLength 7 bDescriptorType 37 bDescriptorSubtype 1 (EP_GENERAL) bmAttributes 0x00 bLockDelayUnits 0 Undefined wLockDelay 0 Undefined Bus 001 Device 006: ID 041e:4058 Creative Technology, Ltd Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 2.00 bDeviceClass 239 Miscellaneous Device bDeviceSubClass 2 Common Class bDeviceProtocol 1 Interface Association bMaxPacketSize0 64 idVendor 0x041e Creative Technology, Ltd idProduct 0x4058 bcdDevice 1.00 iManufacturer 1 Creative Labs iProduct 0 iSerial 0 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 1073 bNumInterfaces 4 bConfigurationValue 1 iConfiguration 0 bmAttributes 0x80 MaxPower 500mA UNRECOGNIZED: 08 0b 00 02 0e 03 00 00 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 1 bInterfaceClass 14 Video bInterfaceSubClass 1 Video Control bInterfaceProtocol 0 iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 3 Transfer Type Interrupt Synch Type None Usage Type Data wMaxPacketSize 0x000a 1x 10 bytes bInterval 5 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 0 bNumEndpoints 0 bInterfaceClass 14 Video bInterfaceSubClass 2 Video Streaming bInterfaceProtocol 0 iInterface 0 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 1 bNumEndpoints 1 bInterfaceClass 14 Video bInterfaceSubClass 2 Video Streaming bInterfaceProtocol 0 iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x82 EP 2 IN bmAttributes 5 Transfer Type Isochronous Synch Type Asynchronous Usage Type Data wMaxPacketSize 0x0080 1x 128 bytes bInterval 1 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 2 bNumEndpoints 1 bInterfaceClass 14 Video bInterfaceSubClass 2 Video Streaming bInterfaceProtocol 0 iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x82 EP 2 IN bmAttributes 5 Transfer Type Isochronous Synch Type Asynchronous Usage Type Data wMaxPacketSize 0x0200 1x 512 bytes bInterval 1 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 3 bNumEndpoints 1 bInterfaceClass 14 Video bInterfaceSubClass 2 Video Streaming bInterfaceProtocol 0 iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x82 EP 2 IN bmAttributes 5 Transfer Type Isochronous Synch Type Asynchronous Usage Type Data wMaxPacketSize 0x0400 1x 0 bytes bInterval 1 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 4 bNumEndpoints 1 bInterfaceClass 14 Video bInterfaceSubClass 2 Video Streaming bInterfaceProtocol 0 iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x82 EP 2 IN bmAttributes 5 Transfer Type Isochronous Synch Type Asynchronous Usage Type Data wMaxPacketSize 0x0b00 2x 768 bytes bInterval 1 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 5 bNumEndpoints 1 bInterfaceClass 14 Video bInterfaceSubClass 2 Video Streaming bInterfaceProtocol 0 iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x82 EP 2 IN bmAttributes 5 Transfer Type Isochronous Synch Type Asynchronous Usage Type Data wMaxPacketSize 0x0c00 2x 0 bytes bInterval 1 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 6 bNumEndpoints 1 bInterfaceClass 14 Video bInterfaceSubClass 2 Video Streaming bInterfaceProtocol 0 iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x82 EP 2 IN bmAttributes 5 Transfer Type Isochronous Synch Type Asynchronous Usage Type Data wMaxPacketSize 0x1380 3x 896 bytes bInterval 1 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 7 bNumEndpoints 1 bInterfaceClass 14 Video bInterfaceSubClass 2 Video Streaming bInterfaceProtocol 0 iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x82 EP 2 IN bmAttributes 5 Transfer Type Isochronous Synch Type Asynchronous Usage Type Data wMaxPacketSize 0x1400 3x 0 bytes bInterval 1 UNRECOGNIZED: 08 0b 02 02 01 02 00 00 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 2 bAlternateSetting 0 bNumEndpoints 0 bInterfaceClass 1 Audio bInterfaceSubClass 1 Control Device bInterfaceProtocol 0 iInterface 0 AudioControl Interface Descriptor: bLength 9 bDescriptorType 36 bDescriptorSubtype 1 (HEADER) bcdADC 1.00 wTotalLength 40 bInCollection 1 baInterfaceNr( 0) 3 AudioControl Interface Descriptor: bLength 12 bDescriptorType 36 bDescriptorSubtype 2 (INPUT_TERMINAL) bTerminalID 1 wTerminalType 0x0602 Digital Audio Interface bAssocTerminal 0 bNrChannels 2 wChannelConfig 0x0003 Left Front (L) Right Front (R) iChannelNames 0 iTerminal 0 AudioControl Interface Descriptor: bLength 10 bDescriptorType 36 bDescriptorSubtype 6 (FEATURE_UNIT) bUnitID 2 bSourceID 1 bControlSize 1 bmaControls( 0) 0x00 bmaControls( 1) 0x43 Mute Volume Automatic Gain bmaControls( 2) 0x43 Mute Volume Automatic Gain iFeature 0 AudioControl Interface Descriptor: bLength 9 bDescriptorType 36 bDescriptorSubtype 3 (OUTPUT_TERMINAL) bTerminalID 3 wTerminalType 0x0101 USB Streaming bAssocTerminal 0 bSourceID 2 iTerminal 0 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 3 bAlternateSetting 0 bNumEndpoints 0 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 0 iInterface 0 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 3 bAlternateSetting 1 bNumEndpoints 1 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 0 iInterface 0 AudioStreaming Interface Descriptor: bLength 7 bDescriptorType 36 bDescriptorSubtype 1 (AS_GENERAL) bTerminalLink 3 bDelay 1 frames wFormatTag 1 PCM AudioStreaming Interface Descriptor: bLength 35 bDescriptorType 36 bDescriptorSubtype 2 (FORMAT_TYPE) bFormatType 1 (FORMAT_TYPE_I) bNrChannels 2 bSubframeSize 2 bBitResolution 16 bSamFreqType 9 Discrete tSamFreq[ 0] 8000 tSamFreq[ 1] 11025 tSamFreq[ 2] 12000 tSamFreq[ 3] 16000 tSamFreq[ 4] 22050 tSamFreq[ 5] 24000 tSamFreq[ 6] 32000 tSamFreq[ 7] 44100 tSamFreq[ 8] 48000 Endpoint Descriptor: bLength 9 bDescriptorType 5 bEndpointAddress 0x83 EP 3 IN bmAttributes 1 Transfer Type Isochronous Synch Type None Usage Type Data wMaxPacketSize 0x00c4 1x 196 bytes bInterval 4 bRefresh 0 bSynchAddress 0 AudioControl Endpoint Descriptor: bLength 7 bDescriptorType 37 bDescriptorSubtype 1 (EP_GENERAL) bmAttributes 0x01 Sampling Frequency bLockDelayUnits 0 Undefined wLockDelay 0 Undefined Device Qualifier (for other device speed): bLength 10 bDescriptorType 6 bcdUSB 2.00 bDeviceClass 239 Miscellaneous Device bDeviceSubClass 2 Common Class bDeviceProtocol 1 Interface Association bMaxPacketSize0 64 bNumConfigurations 1 Bus 001 Device 004: ID 1532:0101 Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 1.10 bDeviceClass 0 (Defined at Interface level) bDeviceSubClass 0 bDeviceProtocol 0 bMaxPacketSize0 8 idVendor 0x1532 idProduct 0x0101 bcdDevice 21.00 iManufacturer 1 Razer iProduct 2 Razer Copperhead Laser Mouse iSerial 0 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 59 bNumInterfaces 2 bConfigurationValue 1 iConfiguration 0 bmAttributes 0xa0 Remote Wakeup MaxPower 200mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 1 bInterfaceClass 3 Human Interface Devices bInterfaceSubClass 0 No Subclass bInterfaceProtocol 2 Mouse iInterface 0 HID Device Descriptor: bLength 9 bDescriptorType 33 bcdHID 10.01 bCountryCode 0 Not supported bNumDescriptors 1 bDescriptorType 34 Report wDescriptorLength 73 Report Descriptors: ** UNAVAILABLE ** Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 3 Transfer Type Interrupt Synch Type None Usage Type Data wMaxPacketSize 0x0010 1x 16 bytes bInterval 8 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 0 bNumEndpoints 1 bInterfaceClass 3 Human Interface Devices bInterfaceSubClass 1 Boot Interface Subclass bInterfaceProtocol 1 Keyboard iInterface 0 HID Device Descriptor: bLength 9 bDescriptorType 33 bcdHID 10.01 bCountryCode 0 Not supported bNumDescriptors 1 bDescriptorType 34 Report wDescriptorLength 47 Report Descriptors: ** UNAVAILABLE ** Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x82 EP 2 IN bmAttributes 3 Transfer Type Interrupt Synch Type None Usage Type Data wMaxPacketSize 0x0010 1x 16 bytes bInterval 8

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[alsa-devel] random static, distortion on M-audio Revolution 5.1
by Chris Falk 09 Sep '07

09 Sep '07

Hi guys, I've got a strange problem... Although my M-audio Revolution 5.1 sounds great, it will randomly "lock up". This seems to occur randomly regardless of what programs I am running. It has happened while browsing, while listening to mp3s with audacious, or while watching tv with xine. If I am running a program that has audio, it will start playing slower, and the frequencies seem warped to some low freq. There is also static, and some popping noises. If I am not running an audio program, I will hear the static and popping noises, and when I try to play an mp3, it will seem to be stuck at time 00:00. Sometimes the problem will go away if I stop my audio programs upon hearing the static, or if I unload the alsa modules and wait a few minutes before loading them again. The first thing that came to my mind was EM interference. I tried swapping the positions of my pci cards (I have a pchdtv 5500 tuner in addition to the sound card), but the problem did not go away. I thought perhaps there was some defect in the card, but I have not experienced any problems with it when I boot to Windows. Here's some info on my system... 2.6.22-gentoo-r5 Advanced Linux Sound Architecture Driver Version 1.0.14 02:0a.0 Multimedia audio controller: VIA Technologies Inc. VT1720/24 [Envy24PT/HT] PCI Multi-Channel Audio Controller (rev 01) Subsystem: VIA Technologies Inc. M-Audio Revolution 5.1 Flags: bus master, medium devsel, latency 32, IRQ 18 I/O ports at a000 [size=32] I/O ports at a400 [size=128] Capabilities: [80] Power Management version 1 If I am experiencing the problem, and I immediately try to restart alsa using /etc/init.d/alsasound restart, then I get these error messages in dmesg... ice1724: i2c busy timeout ice1724: i2c busy timeout ice1724: i2c busy timeout ice1724: i2c busy timeout ice1724: No matching model found for ID 0x12121212 ice1724: i2c busy timeout ice1724: i2c busy timeout ice1724: Invalid EEPROM version 18 ice1724: i2c busy timeout ice1724: i2c busy timeout ice1724: i2c busy timeout nvidia: module license 'NVIDIA' taints kernel. ice1724: i2c busy timeout ice1724: i2c busy timeout ALSA sound/pci/ice1712/ice1724.c:133: snd_vt1724_ac97_ready: timeout ALSA sound/pci/ice1712/ice1724.c:143: snd_vt1724_ac97_wait_bit: timeout ALSA sound/pci/ice1712/ice1724.c:133: snd_vt1724_ac97_ready: timeout ALSA sound/pci/ice1712/ice1724.c:143: snd_vt1724_ac97_wait_bit: timeout ALSA sound/pci/ice1712/ice1724.c:133: snd_vt1724_ac97_ready: timeout ALSA sound/pci/ice1712/ice1724.c:143: snd_vt1724_ac97_wait_bit: timeout ALSA sound/pci/ice1712/ice1724.c:133: snd_vt1724_ac97_ready: timeout ALSA sound/pci/ac97/ac97_codec.c:2046: AC'97 0 does not respond - RESET ALSA sound/pci/ice1712/ice1724.c:133: snd_vt1724_ac97_ready: timeout ALSA sound/pci/ice1712/ice1724.c:143: snd_vt1724_ac97_wait_bit: timeout ALSA sound/pci/ice1712/ice1724.c:133: snd_vt1724_ac97_ready: timeout ALSA sound/pci/ice1712/ice1724.c:143: snd_vt1724_ac97_wait_bit: timeout ALSA sound/pci/ac97/ac97_codec.c:2055: AC'97 0 access is not valid [0xffffffff], removing mixer. ice1712: cannot initialize pro ac97, skipped This problem is driving me crazy! I visited #alsa and googled all over looking for any clues, but could not find anything. I'm extremely grateful for all of the work you guys do, and for any help you could provide me. Thanks!! Chris

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[alsa-devel] ALSA C++ API
by Lasse Kärkkäinen 08 Sep '07

08 Sep '07

Hi, I have written an experimental wrapper for a few parts of the PCM API, using C++. I intend to keep it header-only, if possible. This minimizes the binary compatibility issues and also improves performance slightly, but unlikely noticeably (should be identical to using the C API directly). Primary goals of this wrapper are safety (errors are handled by exceptions and resource leaks should not be possible) and the simplicity of use, while still keeping it very low-level, close to the C API. Does anyone have interest to develop this further? It would also be nice if it could eventually be included in the alsa-lib distribution. The header and a sample program are attached below. Comments are welcome. #ifndef ALSA_HPP_INCLUDED #define ALSA_HPP_INCLUDED /** * @file Experimental low level C++ API to ALSA. * @licence GNU LGPL 2.1 or later **/ #include <alsa/asoundlib.h> #include <stdexcept> namespace alsa { namespace util { /** * @short FOR INTERNAL USE ONLY. A utility class similar to * boost::noncopyable, duplicated here in order to avoid * a dependency on the Boost library. **/ class noncopyable { protected: noncopyable() {} ~noncopyable() {} private: noncopyable(noncopyable const&); noncopyable const& operator=(noncopyable const&); }; } /** * @short A minimal RAII wrapper for ALSA PCM. * Automatically converts into snd_pcm_t* as needed, so the ALSA C API * can be used directly with this. **/ class PCM: util::noncopyable { snd_pcm_t* handle; public: PCM(char const* device = "default", snd_pcm_stream_t stream = SND_PCM_STREAM_PLAYBACK, int mode = 0) { if (snd_pcm_open(&handle, device, stream, mode) < 0) throw std::runtime_error(std::string("Cannot open ALSA device ") + device); } ~PCM() { snd_pcm_close(handle); } operator snd_pcm_t*() { return handle; } }; /** * @short A RAII wrapper for ALSA HWParams structure. * Automatically converts into snd_pcm_hw_params_t* as needed, so the * ALSA C API can still be used directly with this. * Note: contents need to be loaded before the struct can be used. **/ class HWParams { snd_pcm_hw_params_t* handle; void init() { if (snd_pcm_hw_params_malloc(&handle) < 0) throw std::runtime_error("ALSA snd_pcm_hw_params_malloc failed"); } public: HWParams() { init(); } ~HWParams() { snd_pcm_hw_params_free(handle); } HWParams(HWParams const& orig) { init(); *this = orig; } HWParams& operator=(HWParams const& orig) { if (this != &orig) { snd_pcm_hw_params_copy(handle, orig.handle); } return *this; } operator snd_pcm_hw_params_t*() { return handle; } }; /** * @short A helper object for modifying HWParams of a PCM. * * Normally only temporary objects should be created. A typical use case: * alsa::PCM alsa_pcm; // Create a PCM object * alsa::HWConfig(alsa_pcm) // Create a new config space * .set(SND_PCM_ACCESS_RW_INTERLEAVED) * .set(SND_PCM_FORMAT_S16_LE) * .rate_near(rate) * .channels_near(channels) * .period_time_near(period) * .commit(); // Apply the config to the PCM * Note: in case of failure, an exception is thrown. When this happens, * the commit part never gets executed and thus this entire statement * will become void as if it was never executed in the first place. * * If you need to use the C snd_pcm_hw_params_* functions, you may use a * block like this: * { * alsa::HWConfig hw(alsa_pcm); * hw.foo(); * snd_pcm_hw_params_set_period_size(alsa_pcm, hw, 1024, 0); * hw.bar().commit(); * } **/ class HWConfig: util::noncopyable { HWParams params; PCM& pcm; public: HWConfig(PCM& pcm): pcm(pcm) { any(); } operator HWParams&() { return params; } void commit() { if (snd_pcm_hw_params(pcm, params) < 0) throw std::runtime_error("ALSA snd_pcm_hw_params failed"); } HWConfig& any() { if (snd_pcm_hw_params_any(pcm, params) < 0) throw std::runtime_error("ALSA snd_pcm_hw_params_any failed"); return *this; } HWConfig& current() { if (snd_pcm_hw_params_current(pcm, params) < 0) throw std::runtime_error("ALSA snd_pcm_hw_params_current failed"); return *this; } HWConfig& set(snd_pcm_access_t access) { if (snd_pcm_hw_params_set_access(pcm, params, access) < 0) throw std::runtime_error("ALSA snd_pcm_hw_params_set_access failed"); return *this; } HWConfig& set(snd_pcm_format_t format) { if (snd_pcm_hw_params_set_format(pcm, params, format) < 0) throw std::runtime_error("ALSA snd_pcm_hw_params_set_format failed"); return *this; } HWConfig& rate(unsigned int rate) { if (snd_pcm_hw_params_set_rate(pcm, params, rate, NULL) < 0) throw std::runtime_error("ALSA snd_pcm_hw_params_set_rate failed"); return *this; } HWConfig& rate_near(unsigned int& rate) { if (snd_pcm_hw_params_set_rate_near(pcm, params, &rate, NULL) < 0) throw std::runtime_error("ALSA snd_pcm_hw_params_set_rate_near failed"); return *this; } HWConfig& channels(unsigned int num) { if (snd_pcm_hw_params_set_channels(pcm, params, num) < 0) throw std::runtime_error("ALSA snd_pcm_hw_params_set_channels failed"); return *this; } HWConfig& channels_near(unsigned int& num) { if (snd_pcm_hw_params_set_channels_near(pcm, params, &num) < 0) throw std::runtime_error("ALSA snd_pcm_hw_params_set_channels_near failed"); return *this; } HWConfig& period_time(unsigned int samples) { if (snd_pcm_hw_params_set_period_time(pcm, params, samples, NULL) < 0) throw std::runtime_error("ALSA snd_pcm_hw_params_set_period_time failed"); return *this; } HWConfig& period_time_near(unsigned int& us) { if (snd_pcm_hw_params_set_period_time_near(pcm, params, &us, NULL) < 0) throw std::runtime_error("ALSA snd_pcm_hw_params_set_period_time_near failed"); return *this; } }; } #endif // This program tries to record from your sound card, using a chosen sampling // rate. ALSA may give another rate, if the sound card does not support the // requested rate. Two seconds of audio is recorded and the time spent is // measured in order to find the actual rate of the sound card. // Compile with g++ alsarate.cpp -o alsarate -I. -lasound // ... assuming that you have alsa.hpp in the same folder. // Usage: alsarate [ALSA device] [sampling rate] [time in seconds] // GNU GPLv3 or later. #include <alsa.hpp> #include <sys/time.h> #include <algorithm> #include <iomanip> #include <iostream> #include <sstream> #include <vector> double getTime() { timeval t; if (gettimeofday(&t, NULL) == -1) throw std::runtime_error("gettimeofday failed"); return t.tv_sec + t.tv_usec * 1e-6; } void test(char const* dev, unsigned long reqRate, double seconds, bool play) { std::cerr << ">>> Testing " << (play ? "playback" : "capture") << std::endl; try { std::cerr << "Opening ALSA device " << dev << " at " << reqRate << " Hz." << std::endl; double time = getTime(); unsigned int rate = reqRate; unsigned int channels = 1; unsigned int period = 1; alsa::PCM alsaHandle(dev, play ? SND_PCM_STREAM_PLAYBACK : SND_PCM_STREAM_CAPTURE); alsa::HWConfig(alsaHandle) .set(SND_PCM_ACCESS_RW_INTERLEAVED) .set(SND_PCM_FORMAT_S16_LE) .rate_near(rate) .channels_near(channels) .period_time_near(period) .commit(); std::cerr << "Got " << rate << " Hz, " << channels << " channels, period " << period * 1e-3 << " ms." << std::endl; int nFrames = 0; size_t len = rate * seconds; std::vector<short> buf(2048 * channels); for (size_t f = 0; f < len; f += nFrames) { unsigned int frames = std::min<unsigned int>(buf.size() / channels, len - f); if (play) { nFrames = snd_pcm_writei(alsaHandle, &buf[0], frames); } else { nFrames = snd_pcm_readi(alsaHandle, &buf[0], frames); } if (nFrames < 0) throw std::runtime_error("snd_pcm_readi or snd_pcm_writei failed"); } time = getTime() - time; std::cerr << std::fixed << std::setprecision(2) << time << " seconds, measured rate " << std::setprecision(0) << len / time << " Hz." << std::endl; } catch (std::exception& e) { std::cerr << "FATAL ERROR: " << e.what() << std::endl; } } // Should use Boost, but who has the headers installed? template <typename Out, typename In> Out lexical_cast(In val) { std::stringstream ss; Out ret; ss << val; if (ss >> ret) return ret; throw std::runtime_error("Invalid input, lexical cast failed"); } int main(int argc, char** argv) { char const* dev = argc > 1 ? argv[1] : "default"; unsigned int reqRate = argc > 2 ? lexical_cast<int>(argv[2]) : 48000; double time = argc > 3 ? lexical_cast<double>(argv[3]) : 10.0; test(dev, reqRate, time, true); test(dev, reqRate, time, false); }

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[alsa-devel] [PATCH] Improved support for different bt87x board configurations
by Trent Piepho 08 Sep '07

08 Sep '07

After applying this patch, the bt87x.patch file in alsa-driver doesn't apply. I'm not sure what I'm supposed to do about that? # HG changeset patch # User Trent Piepho <xyzzy(a)speakeasy.org> # Date 1188469025 25200 # Node ID 33d453db23d246dade155a6fc3b91d8437a4b7f5 # Parent 52dfc5244360d2b0b119786596962ff5d0c9f338 snd-bt87x: Improve support for different board types Different cards have different audio configurations, but the driver didn't support this. The only setting it had was the digital rate. This patch adds a board configuration list. Currently, configurable items are the digital rate and the digital data format (for cards with an external ADC), a flag for the absence of an external ADC, and a flag for no connection to the Bt87x internal ADC. This allows cards that don't use the internal ADC to omit the ALSA "Bt87x analog" device and related controls. Cards without an external ADC can omit the "Bt87x digital" device. In order to support the CS5331A ADC used on the Osprey 440 and 2x0 cards, the digital format needs to be different than the default. Support could be added for defining: The connections or lack of them to the Bt87x's internal ADC mux Multiple sample rates for an external ADC (e.g. Osprey) Control of an external mux for an external ADC (e.g. Osprey) The card definitions for cards other than the Ospreys are kept equivalent to their old values. This is likely inaccurate for most cards, as it is doubtful that both an external and the internal ADC would be used. Lacking information on those cards, the behavior is left unchanged. Signed-off-by: Trent Piepho <xyzzy(a)speakeasy.org> diff -r 52dfc5244360 -r 33d453db23d2 pci/bt87x.c --- a/pci/bt87x.c Thu Aug 30 10:22:35 2007 +0200 +++ b/pci/bt87x.c Thu Aug 30 03:17:05 2007 -0700 @@ -147,14 +147,67 @@ MODULE_PARM_DESC(load_all, "Allow to loa /* SYNC, one WRITE per line, one extra WRITE per page boundary, SYNC, JUMP */ #define MAX_RISC_SIZE ((1 + 255 + (PAGE_ALIGN(255 * 4092) / PAGE_SIZE - 1) + 1 + 1) * 8) +/* Cards with configuration information */ +enum snd_bt87x_boardid { + SND_BT87X_BOARD_GENERIC, + SND_BT87X_BOARD_ANALOG, /* board with no external A/D */ + SND_BT87X_BOARD_HAUPPAUGE878, + SND_BT87X_BOARD_OSPREY2x0, + SND_BT87X_BOARD_OSPREY440, + SND_BT87X_BOARD_ATI_TVWONDER, + SND_BT87X_BOARD_WINFAST2000, + SND_BT87X_BOARD_VOODOOTV_200, + SND_BT87X_BOARD_AVPHONE98, +}; + +/* Card configuration */ +struct snd_bt87x_board { + int dig_rate; /* Digital input sampling rate */ + u32 digital_fmt; /* Register settings for digital input */ + unsigned no_analog:1; /* No analog input */ + unsigned no_digital:1; /* No digital input */ +}; + +static const __devinitdata struct snd_bt87x_board snd_bt87x_boards[] = { + [SND_BT87X_BOARD_GENERIC] = { + .dig_rate = 32000, + }, + [SND_BT87X_BOARD_ANALOG] = { + .no_digital = 1, + }, + [SND_BT87X_BOARD_HAUPPAUGE878] = { + .dig_rate = 32000, + }, + [SND_BT87X_BOARD_OSPREY2x0] = { + .dig_rate = 44100, + .digital_fmt = CTL_DA_LRI | (1 << CTL_DA_LRD_SHIFT), + }, + [SND_BT87X_BOARD_OSPREY440] = { + .dig_rate = 32000, + .digital_fmt = CTL_DA_LRI | (1 << CTL_DA_LRD_SHIFT), + .no_analog = 1, + }, + [SND_BT87X_BOARD_ATI_TVWONDER] = { + .dig_rate = 32000, + }, + [SND_BT87X_BOARD_WINFAST2000] = { + .dig_rate = 32000, + }, + [SND_BT87X_BOARD_VOODOOTV_200] = { + .dig_rate = 32000, + }, + [SND_BT87X_BOARD_AVPHONE98] = { + .dig_rate = 48000, + }, +}; + struct snd_bt87x { struct snd_card *card; struct pci_dev *pci; + struct snd_bt87x_board board; void __iomem *mmio; int irq; - - int dig_rate; spinlock_t reg_lock; long opened; @@ -342,9 +395,9 @@ static int snd_bt87x_set_digital_hw(stru { chip->reg_control |= CTL_DA_IOM_DA; runtime->hw = snd_bt87x_digital_hw; - runtime->hw.rates = snd_pcm_rate_to_rate_bit(chip->dig_rate); - runtime->hw.rate_min = chip->dig_rate; - runtime->hw.rate_max = chip->dig_rate; + runtime->hw.rates = snd_pcm_rate_to_rate_bit(chip->board.dig_rate); + runtime->hw.rate_min = chip->board.dig_rate; + runtime->hw.rate_max = chip->board.dig_rate; return 0; } @@ -709,9 +762,9 @@ static int __devinit snd_bt87x_create(st chip->mmio = ioremap_nocache(pci_resource_start(pci, 0), pci_resource_len(pci, 0)); if (!chip->mmio) { - snd_bt87x_free(chip); snd_printk(KERN_ERR "cannot remap io memory\n"); - return -ENOMEM; + err = -ENOMEM; + goto fail; } chip->reg_control = CTL_DA_ES2 | CTL_PKTP_16 | (15 << CTL_DA_SDR_SHIFT); @@ -720,54 +773,57 @@ static int __devinit snd_bt87x_create(st snd_bt87x_writel(chip, REG_INT_MASK, 0); snd_bt87x_writel(chip, REG_INT_STAT, MY_INTERRUPTS); - if (request_irq(pci->irq, snd_bt87x_interrupt, IRQF_SHARED, - "Bt87x audio", chip)) { - snd_bt87x_free(chip); - snd_printk(KERN_ERR "cannot grab irq\n"); - return -EBUSY; + err = request_irq(pci->irq, snd_bt87x_interrupt, IRQF_SHARED, + "Bt87x audio", chip); + if (err < 0) { + snd_printk(KERN_ERR "cannot grab irq %d\n", pci->irq); + goto fail; } chip->irq = pci->irq; pci_set_master(pci); synchronize_irq(chip->irq); err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops); - if (err < 0) { - snd_bt87x_free(chip); - return err; - } + if (err < 0) + goto fail; + snd_card_set_dev(card, &pci->dev); *rchip = chip; return 0; -} - -#define BT_DEVICE(chip, subvend, subdev, rate) \ + +fail: + snd_bt87x_free(chip); + return err; +} + +#define BT_DEVICE(chip, subvend, subdev, id) \ { .vendor = PCI_VENDOR_ID_BROOKTREE, \ - .device = chip, \ + .device = PCI_DEVICE_ID_BROOKTREE ## chip, \ .subvendor = subvend, .subdevice = subdev, \ - .driver_data = rate } - -/* driver_data is the default digital_rate value for that device */ + .driver_data = id } +/* driver_data is the card id for that device */ + static struct pci_device_id snd_bt87x_ids[] = { /* Hauppauge WinTV series */ - BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x0070, 0x13eb, 32000), + BT_DEVICE(_878, 0x0070, 0x13eb, SND_BT87X_BOARD_HAUPPAUGE878), /* Hauppauge WinTV series */ - BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_879, 0x0070, 0x13eb, 32000), + BT_DEVICE(_879, 0x0070, 0x13eb, SND_BT87X_BOARD_HAUPPAUGE878), /* Viewcast Osprey 200 */ - BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x0070, 0xff01, 44100), + BT_DEVICE(_878, 0x0070, 0xff01, SND_BT87X_BOARD_OSPREY2x0), /* Viewcast Osprey 440 (rate is configurable via gpio) */ - BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x0070, 0xff07, 32000), + BT_DEVICE(_878, 0x0070, 0xff07, SND_BT87X_BOARD_OSPREY440), /* ATI TV-Wonder */ - BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x1002, 0x0001, 32000), + BT_DEVICE(_878, 0x1002, 0x0001, SND_BT87X_BOARD_ATI_TVWONDER), /* Leadtek Winfast tv 2000xp delux */ - BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x107d, 0x6606, 32000), + BT_DEVICE(_878, 0x107d, 0x6606, SND_BT87X_BOARD_WINFAST2000), /* Voodoo TV 200 */ - BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x121a, 0x3000, 32000), + BT_DEVICE(_878, 0x121a, 0x3000, SND_BT87X_BOARD_VOODOOTV_200), /* AVerMedia Studio No. 103, 203, ...? */ - BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x1461, 0x0003, 48000), + BT_DEVICE(_878, 0x1461, 0x0003, SND_BT87X_BOARD_AVPHONE98), /* Prolink PixelView PV-M4900 */ - BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x1554, 0x4011, 32000), + BT_DEVICE(_878, 0x1554, 0x4011, SND_BT87X_BOARD_GENERIC), /* Pinnacle Studio PCTV rave */ - BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0xbd11, 0x1200, 32000), + BT_DEVICE(_878, 0xbd11, 0x1200, SND_BT87X_BOARD_GENERIC), { } }; MODULE_DEVICE_TABLE(pci, snd_bt87x_ids); @@ -792,7 +848,7 @@ static struct { static struct pci_driver driver; -/* return the rate of the card, or a negative value if it's blacklisted */ +/* return the id of the card, or a negative value if it's blacklisted */ static int __devinit snd_bt87x_detect_card(struct pci_dev *pci) { int i; @@ -810,12 +866,12 @@ static int __devinit snd_bt87x_detect_ca return -EBUSY; } - snd_printk(KERN_INFO "unknown card %#04x-%#04x:%#04x, using default rate 32000\n", - pci->device, pci->subsystem_vendor, pci->subsystem_device); + snd_printk(KERN_INFO "unknown card %#04x-%#04x:%#04x\n", + pci->device, pci->subsystem_vendor, pci->subsystem_device); snd_printk(KERN_DEBUG "please mail id, board name, and, " "if it works, the correct digital_rate option to " "<alsa-devel(a)alsa-project.org>\n"); - return 32000; /* default rate */ + return SND_BT87X_BOARD_GENERIC; } static int __devinit snd_bt87x_probe(struct pci_dev *pci, @@ -824,12 +880,15 @@ static int __devinit snd_bt87x_probe(str static int dev; struct snd_card *card; struct snd_bt87x *chip; - int err, rate; - - rate = pci_id->driver_data; - if (! rate) - if ((rate = snd_bt87x_detect_card(pci)) <= 0) + int err; + enum snd_bt87x_boardid boardid; + + if (! pci_id->driver_data) { + if ((err = snd_bt87x_detect_card(pci)) < 0) return -ENODEV; + boardid = err; + } else + boardid = pci_id->driver_data; if (dev >= SNDRV_CARDS) return -ENODEV; @@ -846,27 +905,36 @@ static int __devinit snd_bt87x_probe(str if (err < 0) goto _error; - if (digital_rate[dev] > 0) - chip->dig_rate = digital_rate[dev]; - else - chip->dig_rate = rate; - - err = snd_bt87x_pcm(chip, DEVICE_DIGITAL, "Bt87x Digital"); - if (err < 0) - goto _error; - err = snd_bt87x_pcm(chip, DEVICE_ANALOG, "Bt87x Analog"); - if (err < 0) - goto _error; - - err = snd_ctl_add(card, snd_ctl_new1(&snd_bt87x_capture_volume, chip)); - if (err < 0) - goto _error; - err = snd_ctl_add(card, snd_ctl_new1(&snd_bt87x_capture_boost, chip)); - if (err < 0) - goto _error; - err = snd_ctl_add(card, snd_ctl_new1(&snd_bt87x_capture_source, chip)); - if (err < 0) - goto _error; + memcpy(&chip->board, &snd_bt87x_boards[boardid], sizeof(chip->board)); + + if (! chip->board.no_digital) { + if (digital_rate[dev] > 0) + chip->board.dig_rate = digital_rate[dev]; + + chip->reg_control |= chip->board.digital_fmt; + + err = snd_bt87x_pcm(chip, DEVICE_DIGITAL, "Bt87x Digital"); + if (err < 0) + goto _error; + } + if (! chip->board.no_analog) { + err = snd_bt87x_pcm(chip, DEVICE_ANALOG, "Bt87x Analog"); + if (err < 0) + goto _error; + err = snd_ctl_add(card, snd_ctl_new1(&snd_bt87x_capture_volume, chip)); + if (err < 0) + goto _error; + err = snd_ctl_add(card, snd_ctl_new1(&snd_bt87x_capture_boost, chip)); + if (err < 0) + goto _error; + err = snd_ctl_add(card, snd_ctl_new1(&snd_bt87x_capture_source, chip)); + if (err < 0) + goto _error; + } + snd_printk(KERN_INFO "bt87x%d: Using board %d, %sanalog, %sdigital (rate %d Hz)\n", + dev, boardid, chip->board.no_analog ? "no " : "", + chip->board.no_digital ? "no " : "", + chip->board.dig_rate); strcpy(card->driver, "Bt87x"); sprintf(card->shortname, "Brooktree Bt%x", pci->device); @@ -897,8 +965,8 @@ static void __devexit snd_bt87x_remove(s /* default entries for all Bt87x cards - it's not exported */ /* driver_data is set to 0 to call detection */ static struct pci_device_id snd_bt87x_default_ids[] __devinitdata = { - BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, PCI_ANY_ID, PCI_ANY_ID, 0), - BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_879, PCI_ANY_ID, PCI_ANY_ID, 0), + BT_DEVICE(_878, PCI_ANY_ID, PCI_ANY_ID, SND_BT87X_BOARD_GENERIC), + BT_DEVICE(_879, PCI_ANY_ID, PCI_ANY_ID, SND_BT87X_BOARD_GENERIC), { } };

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