| Message ID | 200908182124.54739.oldium.pro@seznam.cz (mailing list archive) |
|---|---|
| State | Accepted |
| Headers | show |
Am Dienstag, den 18.08.2009, 21:24 +0200 schrieb OldÅ™ich JedliÄka: > 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: OldÅ™ich JedliÄka <oldium.pro@seznam.cz> As discussed previously, this is an improvement within our current chip specific capabilities. Thanks. Acked-by: hermann pitton <hermann-pitton@arcor.de> > diff --git a/linux/drivers/media/video/saa7134/saa7134-alsa.c b/linux/drivers/media/video/saa7134/saa7134-alsa.c > index c09ec3e..504186a 100644 > --- a/linux/drivers/media/video/saa7134/saa7134-alsa.c > +++ b/linux/drivers/media/video/saa7134/saa7134-alsa.c > @@ -440,6 +440,16 @@ snd_card_saa7134_capture_pointer(struct snd_pcm_substream * substream) > > /* > * 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 = > @@ -453,9 +463,9 @@ static struct snd_pcm_hardware snd_card_saa7134_capture = > SNDRV_PCM_FMTBIT_U8 | \ > SNDRV_PCM_FMTBIT_U16_LE | \ > SNDRV_PCM_FMTBIT_U16_BE, > - .rates = SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_48000, > + .rates = SNDRV_PCM_RATE_32000, > .rate_min = 32000, > - .rate_max = 48000, > + .rate_max = 32000, > .channels_min = 1, > .channels_max = 2, > .buffer_bytes_max = (256*1024), > -- -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/linux/drivers/media/video/saa7134/saa7134-alsa.c b/linux/drivers/media/video/saa7134/saa7134-alsa.c index c09ec3e..504186a 100644 --- a/linux/drivers/media/video/saa7134/saa7134-alsa.c +++ b/linux/drivers/media/video/saa7134/saa7134-alsa.c @@ -440,6 +440,16 @@ snd_card_saa7134_capture_pointer(struct snd_pcm_substream * substream) /* * 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 = @@ -453,9 +463,9 @@ static struct snd_pcm_hardware snd_card_saa7134_capture = SNDRV_PCM_FMTBIT_U8 | \ SNDRV_PCM_FMTBIT_U16_LE | \ SNDRV_PCM_FMTBIT_U16_BE, - .rates = SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_48000, + .rates = SNDRV_PCM_RATE_32000, .rate_min = 32000, - .rate_max = 48000, + .rate_max = 32000, .channels_min = 1, .channels_max = 2, .buffer_bytes_max = (256*1024),
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: OldÅ™ich JedliÄka <oldium.pro@seznam.cz> -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html