From: Jason Mancine <jason@mancine.net>
To: alsa-devel@alsa-project.org
Subject: Re: Zoom R16
Date: Mon, 10 Mar 2014 10:36:33 -0400 [thread overview]
Message-ID: <CAPrbH=tQ3H1wUnK2417ap5jHSSO=y7vkBcCXBJqWn2V9sqbGHQ@mail.gmail.com> (raw)
In-Reply-To: <CAPrbH=uHUhWMYiGcHKLwFYiWwGhahNqAWjio1RKECM_dUnNN6A@mail.gmail.com>
I am still working on trying to get the R16 to work for playback. The
problem is that no matter what .formats setting I use, ALSA sets the R16 to
32 bit LE (the R16 operates at 24 bit integer only). This is fine for
capture as the R16 is sending a 24 bit stream into a 24-in-32 ALSA
capture... but for playback, the 32 bit ALSA stream chokes when it hits the
24 bit integer R16 device.
So, the main question is how do I force ALSA to initialize this device at
24 bit integer?
For the record, here is the quirk that I am working with (working for
capture, recognized for playback but crashes on data). Thanks for any
suggestions.
{
/* ZOOM R16 in USB 2.0 mode */
USB_DEVICE(0x1686, 0x00dd),
.driver_info = (unsigned long) & (const struct snd_usb_audio_quirk)
{
.ifnum = QUIRK_ANY_INTERFACE,
.type = QUIRK_COMPOSITE,
.data = (const struct snd_usb_audio_quirk[]) {
{
.ifnum = 0,
.type = QUIRK_IGNORE_INTERFACE
},
{
.ifnum = 1, /*PLAYBACK*/
.type = QUIRK_AUDIO_FIXED_ENDPOINT,
.data = & (const struct audioformat) {
.formats = SNDRV_PCM_FMTBIT_S24_LE,
.channels = 2,
.iface = 0,
.altsetting = 1,
altset_idx = 1,
.attributes = UAC_EP_CS_ATTR_SAMPLE_RATE,
.endpoint = 0x03,
.ep_attr = 9,
.rates = SNDRV_PCM_RATE_44100 |
SNDRV_PCM_RATE_48000 |
SNDRV_PCM_RATE_88200 |
SNDRV_PCM_RATE_96000,
.rate_min = 44100,
.rate_max = 96000,
.nr_rates = 4,
.rate_table = (unsigned int[]) {
44100, 48000, 88200, 96000
}
}
},
{
.ifnum = 2, /*CAPTURE*/
.type = QUIRK_AUDIO_FIXED_ENDPOINT,
.data = & (const struct audioformat) {
.formats = SNDRV_PCM_FMTBIT_S24_LE,
.channels = 8,
.iface = 0,
.altsetting = 1,
.altset_idx = 1,
.attributes = UAC_EP_CS_ATTR_SAMPLE_RATE,
.endpoint = 0x84,
.ep_attr = 13,
.rates = SNDRV_PCM_RATE_44100 |
SNDRV_PCM_RATE_48000 |
SNDRV_PCM_RATE_88200 |
SNDRV_PCM_RATE_96000,
.rate_min = 44100,
.rate_max = 96000,
.nr_rates = 4,
.rate_table = (unsigned int[]) {
44100, 48000, 88200, 96000
}
}
},
{
.ifnum = 3,
.type = QUIRK_MIDI_STANDARD_INTERFACE
},
{
.ifnum = .1
},
}
}
},
On Fri, Dec 6, 2013 at 12:28 PM, Jason Mancine <jason@mancine.net> wrote:
> With it set to 3LE format it fails on both capture and playback, and is
> still trying to initialize at 32 bits for both.
>
> Any other formats I could try?
> On Dec 6, 2013 11:25 AM, "Takashi Iwai" <tiwai@suse.de> wrote:
>
>> At Fri, 6 Dec 2013 16:10:01 +0000 (UTC),
>> Jason Mancine wrote:
>> >
>> > It seems that ALSA is trying to initialize the device at 32-bit integer
>> > little endian despite having the .formats set to
>> SNDRV_PCM_FMTBIT_S24_LE in
>> > the quirk. The device is 24-bit integer only. Other devices I have
>> > initialize properly at 24 bits.
>>
>> Do you mean the 24bit physical size, i.e. each frame is packed in 3
>> bytes? If so, you used a wrong format. SNDRV_PCM_FMTBIT_S24_LE is
>> for 24bit format packed in 32bit frame. If you need a 3-bytes frame,
>> use SNDRV_PCM_FMTBIT_S24_3LE instead.
>>
>>
>> Takashi
>>
>
next prev parent reply other threads:[~2014-03-10 14:36 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-22 18:12 Zoom R16 Jason Mancine
2013-11-22 20:31 ` Jason Mancine
2013-11-24 13:03 ` Daniel Mack
[not found] ` <CAPrbH=tGph7__rgx-5BsBSi9-E95FpsTL9Yy0zbum0TccTPbyQ@mail.gmail.com>
[not found] ` <20131124141803.GC23126@tamtam.fritz.box>
2013-11-26 18:22 ` Jason Mancine
2013-11-28 14:42 ` Jason Mancine
2013-11-28 14:50 ` Jason Mancine
2013-12-06 16:10 ` Jason Mancine
2013-12-06 16:25 ` Takashi Iwai
2013-12-06 17:28 ` Jason Mancine
2014-03-10 14:36 ` Jason Mancine [this message]
2014-03-10 20:28 ` Alan Horstmann
2014-03-10 20:44 ` Jason Mancine
2014-03-11 7:09 ` Takashi Iwai
2014-03-11 7:59 ` Jason Mancine
2014-03-11 8:13 ` Takashi Iwai
2014-03-11 13:34 ` Jason Mancine
2014-03-11 13:40 ` Takashi Iwai
2014-03-11 15:16 ` Jason Mancine
2014-03-11 15:32 ` Takashi Iwai
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