Em 25-10-2010 15:24, Florian Klink escreveu:
> Hi,
>
> I recently bought a Terratec Grabby. The device has a S-Video and 3 Cinch
> cables (sound left, sound right, video). I want to record some video
> cassettes with it. (with a cinch-scart adapter).
>
> I checked the signal, there is audio and video on it.
>
> When I try to "play" the capture device with e.g. mplayer, I see "no
> sound", even with various options.
>
> I can hear sound only by doing "arecord -D hw:2,0 -r 32000 -c 2 -f S16_LE |
> aplay -", but as soon as mplayer is starting, I can't hear anything
> anymore.
>
> ...which means that using alsa as the sound device with mplayer doesn't
> work either.
>
> Am I missing something?
Maybe the amux is wrong. The only way to know for sure is to check the used GPIO's,
via a USB snoop dump. Please take a look at linuxtv.org Wiki (search for usbsnoop).
After getting the dump, please parse it and send me.
>
> I checked the source code, Terratec Grabby support was introduced with
> 4557af9c5338605c85fe54f5ebba3d4b14a60ab8:
>
> -----------------------------------------
> diff --git a/drivers/media/video/em28xx/em28xx-cards.c b/drivers/media/video/em28xx/em28xx-cards.c
> index 7cb93fb..b4c78f2 100644
> --- a/drivers/media/video/em28xx/em28xx-cards.c
> +++ b/drivers/media/video/em28xx/em28xx-cards.c
> @@ -1347,6 +1347,22 @@ struct em28xx_board em28xx_boards[] = {
> .amux = EM28XX_AMUX_VIDEO,
> } },
> },
> + [EM2860_BOARD_TERRATEC_GRABBY] = {
> + .name = "Terratec Grabby",
> + .vchannels = 2,
> + .tuner_type = TUNER_ABSENT,
> + .decoder = EM28XX_SAA711X,
> + .xclk = EM28XX_XCLK_FREQUENCY_12MHZ,
> + .input = { {
> + .type = EM28XX_VMUX_COMPOSITE1,
> + .vmux = SAA7115_COMPOSITE0,
> + .amux = EM28XX_AMUX_VIDEO2,
> + }, {
> + .type = EM28XX_VMUX_SVIDEO,
> + .vmux = SAA7115_SVIDEO3,
> + .amux = EM28XX_AMUX_VIDEO2,
> + } },
> + },
> };
> const unsigned int em28xx_bcount = ARRAY_SIZE(em28xx_boards);
>
> @@ -1410,6 +1426,8 @@ struct usb_device_id em28xx_id_table[] = {
> .driver_info = EM2870_BOARD_TERRATEC_XS },
> { USB_DEVICE(0x0ccd, 0x0047),
> .driver_info = EM2880_BOARD_TERRATEC_PRODIGY_XS },
> + { USB_DEVICE(0x0ccd, 0x0096),
> + .driver_info = EM2860_BOARD_TERRATEC_GRABBY },
> { USB_DEVICE(0x185b, 0x2870),
> .driver_info = EM2870_BOARD_COMPRO_VIDEOMATE },
> { USB_DEVICE(0x185b, 0x2041),
> diff --git a/drivers/media/video/em28xx/em28xx.h b/drivers/media/video/em28xx/em28xx.h
> index e801f78..fa2fb41 100644
> --- a/drivers/media/video/em28xx/em28xx.h
> +++ b/drivers/media/video/em28xx/em28xx.h
> @@ -103,6 +103,7 @@
> #define EM2860_BOARD_EASYCAP 64
> #define EM2820_BOARD_IODATA_GVMVP_SZ 65
> #define EM2880_BOARD_EMPIRE_DUAL_TV 66
> +#define EM2860_BOARD_TERRATEC_GRABBY 67
>
> /* Limits minimum and default number of buffers */
> #define EM28XX_MIN_BUF 4
> -----------------------------------------
>
> Is there maybe a wrong amux set? Which one could it be?
> Is sound-usb-audio somehow conflicting with em28xx module?
>
> I hope you have an idea what is wrong here!
>
> Florian Klink
>
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