diff options
| author | Trent Piepho <xyzzy@speakeasy.org> | 2007-03-07 18:19:49 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@infradead.org> | 2007-04-27 15:44:19 -0300 |
| commit | 93566ad8068a968c3e72951b4539eb9da661446d (patch) | |
| tree | a326288f20ee3815f50c1e590c3f149a5dc83cbb | |
| parent | cf3c34c87f921c5c63d47285c9860345cdaf5170 (diff) | |
V4L/DVB (5392): Zr364xx: Use kernel's byte-swapping function
Some code to swap bytes wasn't using the swab16() function that the
kernel provides for this. Make use of it, which results in more
efficient code.
Signed-off-by: Trent Piepho <xyzzy@speakeasy.org>
Acked-by: Antoine Jacquet <royale@zerezo.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| -rw-r--r-- | drivers/media/video/zr364xx.c | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/drivers/media/video/zr364xx.c b/drivers/media/video/zr364xx.c index 16bb3576b6e..b5d3364c94c 100644 --- a/drivers/media/video/zr364xx.c +++ b/drivers/media/video/zr364xx.c @@ -277,7 +277,7 @@ static unsigned char header3; static int read_frame(struct zr364xx_camera *cam, int framenum) { int i, n, temp, head, size, actual_length; - unsigned char *ptr = NULL, *jpeg, swap; + unsigned char *ptr = NULL, *jpeg; redo: /* hardware brightness */ @@ -308,12 +308,11 @@ static int read_frame(struct zr364xx_camera *cam, int framenum) } /* swap bytes if camera needs it */ - if (cam->method == METHOD0) - for (i = 0; i < BUFFER_SIZE; i += 2) { - swap = cam->buffer[i]; - cam->buffer[i] = cam->buffer[i + 1]; - cam->buffer[i + 1] = swap; - } + if (cam->method == METHOD0) { + u16 *buf = (u16*)cam->buffer; + for (i = 0; i < BUFFER_SIZE/2; i++) + swab16s(buf + i); + } /* write the JPEG header */ if (!head) { |