diff options
Diffstat (limited to 'lib/libusb/libusb20.3')
| -rw-r--r-- | lib/libusb/libusb20.3 | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/lib/libusb/libusb20.3 b/lib/libusb/libusb20.3 index a6dc890a70b4..93dfe18cf5be 100644 --- a/lib/libusb/libusb20.3 +++ b/lib/libusb/libusb20.3 @@ -261,6 +261,16 @@ The actual buffer size can be greater than and is returned by .Fn libusb20_tr_get_max_total_length . . +If +.Fa max_frame_count +is OR'ed with LIBUSB20_MAX_FRAME_PRE_SCALE the remaining part of the +argument is converted from milliseconds into the actual number of +frames rounded up, when this function returns. +This flag is only valid for ISOCHRONOUS transfers and has no effect +for other transfer types. +The actual number of frames setup is found by calling +.Fn libusb20_tr_get_max_frames . +. This function returns zero upon success. . Non-zero return values indicate a LIBUSB20_ERROR value. |