V4L/DVB (7552): videbuf-vmalloc: Corrects mmap code

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There were some bugs on videobuf-vmalloc.

Basically, remap were called with a wrong parameter. Due to that, a later remap
were needed, generating the need of some hacks on videobuf-vmalloc and
videobuf-core.

This patch fixes the remap and removes the hacks.

TODO:

- V4L2_MEMORY_USERPTR is not implemented yet. This method should be
  properly implemented, in order to work with a few userspace applications.

- The driver also doesn't implement V4L2_MEMORY_OVERLAY. This method is used
  only by a few applications, and are becaming obsolete, due to the increment
  of cpu performance. So, most apps prefer to retrieve data to an internal
  buffer, doing some processing like de-interlacing.

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

...

This commit is contained in:

Mauro Carvalho Chehab 2008-04-13 14:58:21 -03:00

parent fbde31d54b

commit 968ced78a5

2 changed files with 105 additions and 72 deletions

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14

drivers/media/video/videobuf-core.c

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169

drivers/media/video/videobuf-vmalloc.c

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