Hi, I would appreciate if anyone can feedback on this, I'm considering implementing mmap in demux/dvr devices so that user-space can access the input/output buffers directly without the need for read/write operations. Thanks Hamad -----Original Message----- From: linux-media-owner@xxxxxxxxxxxxxxx [mailto:linux-media-owner@xxxxxxxxxxxxxxx] On Behalf Of Hamad Kadmany Sent: Sunday, February 12, 2012 4:19 PM To: linux-media@xxxxxxxxxxxxxxx Subject: [media][dvb-core] Question on dvr device copy Hi, Currently when playing stream from memory through dvr device (through write calls), the written buffer is copied from user-space to kernel space. The same applies when recording a stream, the TS packets received from HW are copied to dvr ring-buffer. I'm a bit concerned about the performance due to the copy, and whether we better have a memory mapped ring-buffer in dvr device output and/or dvr device input with user-space to cope with high bitrate streams. Your feedback on this will be mostly appreciated. Thanks Hamad -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
