On Tue, Mar 12, 2013 at 11:33 PM, Xiaofan Chen <xiaof...@gmail.com> wrote:
>
> The following is for #99, modified from the libusb.org ticket #165.
> I think the original patch there is flawed since it does not consider
> Super Speed where Mac OS X 10.8.x supports.
>
> From 4f22847d7d25ccb5caedfa8b72bc18167c9fabee Mon Sep 17 00:00:00 2001
> From: Vegard Storheil Eriksen <z...@jvnv.net>
> Date: Tue, 12 Mar 2013 23:30:05 +0800
> Subject: [PATCH] Darwin: Do not assume HS when submitting isochronous
> transfer
>
> ---
> libusb/os/darwin_usb.c | 5 ++++-
> 1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/libusb/os/darwin_usb.c b/libusb/os/darwin_usb.c
> index ed4a933..8575162 100644
> --- a/libusb/os/darwin_usb.c
> +++ b/libusb/os/darwin_usb.c
> @@ -1443,7 +1443,10 @@ static int submit_iso_transfer(struct
> usbi_transfer *itransfer) {
>
> transfer->num_iso_packets, tpriv->isoc_framelist,
> darwin_async_io_callback,
> itransfer);
>
> - cInterface->frames[transfer->endpoint] = frame +
> transfer->num_iso_packets / 8;
> + if (transfer->dev_handle->dev->speed == LIBUSB_SPEED_FULL)
> + cInterface->frames[transfer->endpoint] = frame +
> transfer->num_iso_packets;
> + else
> + cInterface->frames[transfer->endpoint] = frame +
> transfer->num_iso_packets / 8;
>
> if (kresult != kIOReturnSuccess) {
> usbi_err (TRANSFER_CTX (transfer), "isochronous transfer failed
> (dir: %s): %s", IS_XFERIN(transfer) ? "In" : "Out",
> --
> 1.7.12.4 (Apple Git-37)
>Oops, forgot to save the changes to the attachment (not to use my name as the author of the patch but rather the original author). -- Xiaofan
fix_isoc_darwin.patch
Description: Binary data
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