mirror of https://gitee.com/openkylin/linux.git
8b2aea7878
Using bulk mode allows more than one webcam, as the maximum fps is low at 640x480 resolution. So, prefer it, if the device is a webcam. Tested with Silvercrest 1.3 Mpixel webcam (em2710) on both bulk and isoc modes. Tested analog with HVR-950 model 65201/A1C0 (em2883), where only ISOC endpoints are available for both DVB and Analog. Tested on Hauppauge WinTV USB 2 (em2840) on both bulk and isoc modes. It should be noticed that enabling bulk mode by default with TV boards is a bad idea; what happens is that, while with ISOC the USB logic will prevent the concurrent usage of two devices that spends more than 100% of the USB2 traffic, it doesn't care with bulk transfers. On my tests, I started two streams, one with a WinTV at 640x480x30fps and the other one with a Silvercrest webcam at 640x480, on a lower fps) both on bulk mode. One of the streams always silently failed. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com> |
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| .. | ||
| Kconfig | ||
| Makefile | ||
| em28xx-audio.c | ||
| em28xx-cards.c | ||
| em28xx-core.c | ||
| em28xx-dvb.c | ||
| em28xx-i2c.c | ||
| em28xx-input.c | ||
| em28xx-reg.h | ||
| em28xx-vbi.c | ||
| em28xx-video.c | ||
| em28xx.h | ||