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ALSA: usbaudio: Fix wrong bitrate for Creative Creative VF0470 Live Cam

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This patch works around misbehaviour of Creative Creative VF0470 Live Cam
which reports 16 kHz sample rate for audio capture while actually producing
8 kHz stream.

Signed-off-by: Arseniy Lartsev <arseniy@fizlesh.ru>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Arseniy Lartsev 2010-03-02 14:52:28 +03:00 committed by Takashi Iwai
parent 156366d315
commit 864c11080c
1 changed files with 3 additions and 0 deletions
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3
sound/usb/usbaudio.c
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@ -2581,6 +2581,9 @@ static int parse_audio_format_rates_v1(struct snd_usb_audio *chip, struct audiof
chip->usb_id == USB_ID(0x0d8c, 0x0102)) &&
fp->altsetting == 5 && fp->maxpacksize == 392)
rate = 96000;
/* Creative VF0470 Live Cam reports 16 kHz instead of 8kHz */
if (rate == 16000 && chip->usb_id == USB_ID(0x041e, 0x4068))
rate = 8000;
fp->rate_table[fp->nr_rates] = rate;
if (!fp->rate_min || rate < fp->rate_min)
fp->rate_min = rate;