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V4L/DVB (7564): em28xx: Some fixes to display logic 

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Mauro Carvalho Chehab 2008-04-13 15:09:14 -03:00
parent dbecb44c11
commit b4916f8ca1
2 changed files with 19 additions and 15 deletions
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31
drivers/media/video/em28xx/em28xx-video.c
View File

@ -365,32 +365,33 @@ static inline int em28xx_isoc_copy(struct urb *urb)
/* FIXME: incomplete buffer checks where removed to make
logic simpler. Impacts of those changes should be evaluated
*/
if (p[0] == 0x33 && p[1] == 0x95 && p[2] == 0x00) {
em28xx_isocdbg("VBI HEADER!!!\n");
/* FIXME: Should add vbi copy */
continue;
}
if (p[0] == 0x22 && p[1] == 0x5a) {
em28xx_isocdbg("Video frame %d, length=%i, %s\n", p[2],
len, (p[2] & 1)? "odd" : "even");
if (p[2] & 1)
buf->top_field = 0;
else {
if (buf->receiving) {
buffer_filled(dev, dma_q, buf);
rc = get_next_buf(dma_q, &buf);
if (rc <= 0)
return rc;
outp = videobuf_to_vmalloc(&buf->vb);
}
else
buf->top_field = 1;
// if (dev->isoc_ctl.last_field && !buf->top_field) {
if (dev->isoc_ctl.last_field != buf->top_field) {
buffer_filled(dev, dma_q, buf);
rc = get_next_buf(dma_q, &buf);
if (rc <= 0)
return rc;
outp = videobuf_to_vmalloc(&buf->vb);
}
buf->receiving = 1;
dev->isoc_ctl.last_field = buf->top_field;
dma_q->pos = 0;
} else if (p[0] == 0x33 && p[1] == 0x95 && p[2] == 0x00) {
em28xx_isocdbg("VBI HEADER!!!\n");
}
em28xx_copy_video(dev, dma_q, buf, p, outp, len);
/* FIXME: Should add vbi copy */
}
return rc;
}

3
drivers/media/video/em28xx/em28xx.h
View File

@ -114,6 +114,9 @@ struct em28xx_usb_isoc_ctl {
/* Stores already requested buffers */
struct em28xx_buffer *buf;
/* Store last filled frame */
int last_field;
/* Stores the number of received fields */
int nfields;
};