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V4L/DVB (12490): Report only 32kHz for ALSA

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There are several reasons:

 - SAA7133/35 uses DDEP (DemDec Easy Programming mode), which works in 32kHz
   only
 - SAA7134 for TV mode uses DemDec mode (32kHz)
 - Radio works in 32kHz only
 - When recording 48kHz from Line1/Line2, switching of capture source to TV
   means switching to 32kHz without any frequency translation

Signed-off-by: Oldřich Jedlička <oldium.pro@seznam.cz>
Acked-by: hermann pitton <hermann-pitton@arcor.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Oldřich Jedlička
2009-08-18 16:24:54 -03:00
committed by Mauro Carvalho Chehab
parent 89dec01b7e
commit 7b54360293
1 changed files with 12 additions and 2 deletions
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14
drivers/media/video/saa7134/saa7134-alsa.c
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@@ -435,6 +435,16 @@ snd_card_saa7134_capture_pointer(struct snd_pcm_substream * substream)
/* /*
* ALSA hardware capabilities definition * ALSA hardware capabilities definition
*
* Report only 32kHz for ALSA:
*
* - SAA7133/35 uses DDEP (DemDec Easy Programming mode), which works in 32kHz
* only
* - SAA7134 for TV mode uses DemDec mode (32kHz)
* - Radio works in 32kHz only
* - When recording 48kHz from Line1/Line2, switching of capture source to TV
* means
* switching to 32kHz without any frequency translation
*/ */
static struct snd_pcm_hardware snd_card_saa7134_capture = static struct snd_pcm_hardware snd_card_saa7134_capture =
@@ -448,9 +458,9 @@ static struct snd_pcm_hardware snd_card_saa7134_capture =
SNDRV_PCM_FMTBIT_U8 | \ SNDRV_PCM_FMTBIT_U8 | \
SNDRV_PCM_FMTBIT_U16_LE | \ SNDRV_PCM_FMTBIT_U16_LE | \
SNDRV_PCM_FMTBIT_U16_BE, SNDRV_PCM_FMTBIT_U16_BE,
.rates = SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_48000, .rates = SNDRV_PCM_RATE_32000,
.rate_min = 32000, .rate_min = 32000,
.rate_max = 48000, .rate_max = 32000,
.channels_min = 1, .channels_min = 1,
.channels_max = 2, .channels_max = 2,
.buffer_bytes_max = (256*1024), .buffer_bytes_max = (256*1024),