On Sun, Sep 5, 2010 at 12:06 PM, loody <miloody@xxxxxxxxx> wrote: > hi: > > 2010/9/5 Devin Heitmueller <dheitmueller@xxxxxxxxxxxxxx>: >> On Sun, Sep 5, 2010 at 11:48 AM, Devin Heitmueller >> <dheitmueller@xxxxxxxxxxxxxx> wrote: >>> On Sun, Sep 5, 2010 at 11:36 AM, loody <miloody@xxxxxxxxx> wrote: >>>> WinTV-HVR-1950 high performance USB TV tuner >>>> WinTV-HVR-950Q for laptop and notebooks >>> >>> Both these devices are supported under Linux, and in fact are unlikely >>> to work properly with only Full Speed USB. At least the 950q >>> definitely requires High speed (I put a check in there to specifically >>> not load the driver otherwise). >> >> I perhaps misread your original email. While the 950q does present >> itself as a USB audio class device, the 1950 does not. It only >> provides MPEG encoded output (containing both the audio and video), >> and is not a USB audio class device. >> >> So while both these devices will work under Linux on a high speed >> interface, if you specifically require the device to identify itself >> as a USB audio class device, only the 950q does this. >> >> Devin > would you mind to send me the device descriptors for me? > I want to check whether the input/output unit and audio/video format > does meet the spec. > BTW, will the device support mp3 output? > since the spec define mp3 as one of input/output format. > that means if I put the raw data of mp3 to that device, it should > play/record well. The device descriptors can be found here: http://linuxtv.org/wiki/index.php/Hauppauge_WinTV-HVR-950Q#Identification The device does not support MP3 output (virtually no devices do as far as I know). It only provides raw 16-bit two channel PCM. The video format would not be in the spec you mentioned. It does work as a standard V4L2 device though, providing raw YUYV video frames. Perhaps if I better understood your intended application, I might be able to give better advice. Devin -- Devin J. Heitmueller - Kernel Labs http://www.kernellabs.com -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
