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V4L/DVB (6716): ivtv: yuv interlace mode change 

Interlace mode selection code moved into the frame setup phase, so it's now
run before the frame is loaded into a hardware buffer. Given that it can
affect how a new frame is displayed, it was a bit stupid running it after the
frame was already visible.

A few stray interlace related variables which were linked to individual frames
have now been moved into the yuv_frame_info struct. This means that all
variables linked to a specific frame are in the same place & not scattered.

Minor code reformatting in areas touched by the above changes.

Signed-off-by: Ian Armstrong <ian@iarmst.demon.co.uk>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Ian Armstrong 2007-10-22 14:24:26 -03:00 committed by Mauro Carvalho Chehab
parent 406c8b0ff0
commit 3b5c1c8e71
3 changed files with 197 additions and 207 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/media/video/ivtv/ivtv-driver.h
View File

@ -392,6 +392,9 @@ struct yuv_frame_info
u32 tru_h;
u32 offset_y;
s32 lace_mode;
u32 sync_field;
u32 delay;
u32 interlaced;
};
#define IVTV_YUV_MODE_INTERLACED 0x00
@ -465,8 +468,6 @@ struct yuv_playback_info
int decode_height;
int frame_interlaced;
int lace_mode;
int lace_threshold;
int lace_sync_field;
@ -477,8 +478,6 @@ struct yuv_playback_info
u32 yuv_forced_update;
int update_frame;
int sync_field[IVTV_YUV_BUFFERS]; /* Field to sync on */
int field_delay[IVTV_YUV_BUFFERS]; /* Flag to extend duration of previous frame */
u8 fields_lapsed; /* Counter used when delaying a frame */
struct yuv_frame_info new_frame_info[IVTV_YUV_BUFFERS];

19
drivers/media/video/ivtv/ivtv-irq.c
View File

@ -746,15 +746,16 @@ static void ivtv_irq_vsync(struct ivtv *itv)
unsigned int frame = read_reg(0x28c0) & 1;
struct yuv_playback_info *yi = &itv->yuv_info;
int last_dma_frame = atomic_read(&itv->yuv_info.next_dma_frame);
struct yuv_frame_info *f = &yi->new_frame_info[last_dma_frame];
if (0) IVTV_DEBUG_IRQ("DEC VSYNC\n");
if (((frame ^ yi->sync_field[last_dma_frame]) == 0 &&
((itv->last_vsync_field & 1) ^ yi->sync_field[last_dma_frame])) ||
(frame != (itv->last_vsync_field & 1) && !yi->frame_interlaced)) {
if (((frame ^ f->sync_field) == 0 &&
((itv->last_vsync_field & 1) ^ f->sync_field)) ||
(frame != (itv->last_vsync_field & 1) && !f->interlaced)) {
int next_dma_frame = last_dma_frame;
if (!(yi->frame_interlaced && yi->field_delay[next_dma_frame] && yi->fields_lapsed < 1)) {
if (!(f->interlaced && f->delay && yi->fields_lapsed < 1)) {
if (next_dma_frame >= 0 && next_dma_frame != atomic_read(&yi->next_fill_frame)) {
write_reg(yuv_offset[next_dma_frame] >> 4, 0x82c);
write_reg((yuv_offset[next_dma_frame] + IVTV_YUV_BUFFER_UV_OFFSET) >> 4, 0x830);
@ -795,13 +796,15 @@ static void ivtv_irq_vsync(struct ivtv *itv)
}
/* Check if we need to update the yuv registers */
if ((yi->yuv_forced_update || yi->new_frame_info[last_dma_frame].update) && last_dma_frame != -1) {
if (!yi->new_frame_info[last_dma_frame].update)
if ((yi->yuv_forced_update || f->update) && last_dma_frame != -1) {
if (!f->update) {
last_dma_frame = (u8)(last_dma_frame - 1) % IVTV_YUV_BUFFERS;
f = &yi->new_frame_info[last_dma_frame];
}
if (yi->new_frame_info[last_dma_frame].src_w) {
if (f->src_w) {
yi->update_frame = last_dma_frame;
yi->new_frame_info[last_dma_frame].update = 0;
f->update = 0;
yi->yuv_forced_update = 0;
set_bit(IVTV_F_I_WORK_HANDLER_YUV, &itv->i_flags);
set_bit(IVTV_F_I_HAVE_WORK, &itv->i_flags);

378
drivers/media/video/ivtv/ivtv-yuv.c
View File

@ -39,19 +39,20 @@ static int ivtv_yuv_prep_user_dma(struct ivtv *itv, struct ivtv_user_dma *dma,
{
struct ivtv_dma_page_info y_dma;
struct ivtv_dma_page_info uv_dma;
struct yuv_playback_info *yi = &itv->yuv_info;
u8 frame = yi->draw_frame;
struct yuv_frame_info *f = &yi->new_frame_info[frame];
int i;
int y_pages, uv_pages;
u8 frame = itv->yuv_info.draw_frame;
unsigned long y_buffer_offset, uv_buffer_offset;
int y_decode_height, uv_decode_height, y_size;
y_buffer_offset = IVTV_DECODER_OFFSET + yuv_offset[frame];
uv_buffer_offset = y_buffer_offset + IVTV_YUV_BUFFER_UV_OFFSET;
y_decode_height = uv_decode_height = args->src.height + args->src.top;
y_decode_height = uv_decode_height = f->src_h + f->src_x;
if (y_decode_height < 512-16)
if (f->offset_y)
y_buffer_offset += 720 * 16;
if (y_decode_height & 15)
@ -106,13 +107,11 @@ static int ivtv_yuv_prep_user_dma(struct ivtv *itv, struct ivtv_user_dma *dma,
ivtv_udma_fill_sg_array (dma, y_buffer_offset, uv_buffer_offset, y_size);
/* If we've offset the y plane, ensure top area is blanked */
if (args->src.height + args->src.top < 512-16) {
if (itv->yuv_info.blanking_dmaptr) {
dma->SGarray[dma->SG_length].size = cpu_to_le32(720*16);
dma->SGarray[dma->SG_length].src = cpu_to_le32(itv->yuv_info.blanking_dmaptr);
dma->SGarray[dma->SG_length].dst = cpu_to_le32(IVTV_DECODER_OFFSET + yuv_offset[frame]);
dma->SG_length++;
}
if (f->offset_y && itv->yuv_info.blanking_dmaptr) {
dma->SGarray[dma->SG_length].size = cpu_to_le32(720*16);
dma->SGarray[dma->SG_length].src = cpu_to_le32(itv->yuv_info.blanking_dmaptr);
dma->SGarray[dma->SG_length].dst = cpu_to_le32(IVTV_DECODER_OFFSET + yuv_offset[frame]);
dma->SG_length++;
}
/* Tag SG Array with Interrupt Bit */
@ -387,7 +386,7 @@ static void ivtv_yuv_handle_vertical(struct ivtv *itv, struct yuv_frame_info *wi
}
/* What is the source video being treated as... */
if (itv->yuv_info.frame_interlaced) {
if (window->interlaced) {
IVTV_DEBUG_WARN("Source video: Interlaced\n");
}
else {
@ -631,192 +630,142 @@ static void ivtv_yuv_handle_vertical(struct ivtv *itv, struct yuv_frame_info *wi
}
/* Modify the supplied coordinate information to fit the visible osd area */
static u32 ivtv_yuv_window_setup (struct ivtv *itv, struct yuv_frame_info *window)
static u32 ivtv_yuv_window_setup(struct ivtv *itv, struct yuv_frame_info *f)
{
int osd_crop, lace_threshold;
struct yuv_frame_info *of = &itv->yuv_info.old_frame_info;
int osd_crop;
u32 osd_scale;
u32 yuv_update = 0;
lace_threshold = itv->yuv_info.lace_threshold;
if (lace_threshold < 0)
lace_threshold = itv->yuv_info.decode_height - 1;
/* Work out the lace settings */
switch (itv->yuv_info.lace_mode) {
case IVTV_YUV_MODE_PROGRESSIVE: /* Progressive mode */
itv->yuv_info.frame_interlaced = 0;
if (window->tru_h < 512 || (window->tru_h > 576 && window->tru_h < 1021))
window->interlaced_y = 0;
else
window->interlaced_y = 1;
if (window->tru_h < 1021 && (window->dst_h >= window->src_h /2))
window->interlaced_uv = 0;
else
window->interlaced_uv = 1;
break;
case IVTV_YUV_MODE_AUTO:
if (window->tru_h <= lace_threshold || window->tru_h > 576 || window->tru_w > 720){
itv->yuv_info.frame_interlaced = 0;
if ((window->tru_h < 512) ||
(window->tru_h > 576 && window->tru_h < 1021) ||
(window->tru_w > 720 && window->tru_h < 1021))
window->interlaced_y = 0;
else
window->interlaced_y = 1;
if (window->tru_h < 1021 && (window->dst_h >= window->src_h /2))
window->interlaced_uv = 0;
else
window->interlaced_uv = 1;
}
else {
itv->yuv_info.frame_interlaced = 1;
window->interlaced_y = 1;
window->interlaced_uv = 1;
}
break;
case IVTV_YUV_MODE_INTERLACED: /* Interlace mode */
default:
itv->yuv_info.frame_interlaced = 1;
window->interlaced_y = 1;
window->interlaced_uv = 1;
break;
}
/* Sorry, but no negative coords for src */
if (window->src_x < 0) window->src_x = 0;
if (window->src_y < 0) window->src_y = 0;
if (f->src_x < 0)
f->src_x = 0;
if (f->src_y < 0)
f->src_y = 0;
/* Can only reduce width down to 1/4 original size */
if ((osd_crop = window->src_w - ( 4 * window->dst_w )) > 0) {
window->src_x += osd_crop / 2;
window->src_w = (window->src_w - osd_crop) & ~3;
window->dst_w = window->src_w / 4;
window->dst_w += window->dst_w & 1;
if ((osd_crop = f->src_w - 4 * f->dst_w) > 0) {
f->src_x += osd_crop / 2;
f->src_w = (f->src_w - osd_crop) & ~3;
f->dst_w = f->src_w / 4;
f->dst_w += f->dst_w & 1;
}
/* Can only reduce height down to 1/4 original size */
if (window->src_h / window->dst_h >= 2) {
/* Overflow may be because we're running progressive, so force mode switch */
window->interlaced_y = 1;
if (f->src_h / f->dst_h >= 2) {
/* Overflow may be because we're running progressive,
so force mode switch */
f->interlaced_y = 1;
/* Make sure we're still within limits for interlace */
if ((osd_crop = window->src_h - ( 4 * window->dst_h )) > 0) {
if ((osd_crop = f->src_h - 4 * f->dst_h) > 0) {
/* If we reach here we'll have to force the height. */
window->src_y += osd_crop / 2;
window->src_h = (window->src_h - osd_crop) & ~3;
window->dst_h = window->src_h / 4;
window->dst_h += window->dst_h & 1;
f->src_y += osd_crop / 2;
f->src_h = (f->src_h - osd_crop) & ~3;
f->dst_h = f->src_h / 4;
f->dst_h += f->dst_h & 1;
}
}
/* If there's nothing to safe to display, we may as well stop now */
if ((int)window->dst_w <= 2 || (int)window->dst_h <= 2 || (int)window->src_w <= 2 || (int)window->src_h <= 2) {
if ((int)f->dst_w <= 2 || (int)f->dst_h <= 2 ||
(int)f->src_w <= 2 || (int)f->src_h <= 2) {
return IVTV_YUV_UPDATE_INVALID;
}
/* Ensure video remains inside OSD area */
osd_scale = (window->src_h << 16) / window->dst_h;
osd_scale = (f->src_h << 16) / f->dst_h;
if ((osd_crop = window->pan_y - window->dst_y) > 0) {
if ((osd_crop = f->pan_y - f->dst_y) > 0) {
/* Falls off the upper edge - crop */
window->src_y += (osd_scale * osd_crop) >> 16;
window->src_h -= (osd_scale * osd_crop) >> 16;
window->dst_h -= osd_crop;
window->dst_y = 0;
}
else {
window->dst_y -= window->pan_y;
f->src_y += (osd_scale * osd_crop) >> 16;
f->src_h -= (osd_scale * osd_crop) >> 16;
f->dst_h -= osd_crop;
f->dst_y = 0;
} else {
f->dst_y -= f->pan_y;
}
if ((osd_crop = window->dst_h + window->dst_y - window->vis_h) > 0) {
if ((osd_crop = f->dst_h + f->dst_y - f->vis_h) > 0) {
/* Falls off the lower edge - crop */
window->dst_h -= osd_crop;
window->src_h -= (osd_scale * osd_crop) >> 16;
f->dst_h -= osd_crop;
f->src_h -= (osd_scale * osd_crop) >> 16;
}
osd_scale = (window->src_w << 16) / window->dst_w;
osd_scale = (f->src_w << 16) / f->dst_w;
if ((osd_crop = window->pan_x - window->dst_x) > 0) {
if ((osd_crop = f->pan_x - f->dst_x) > 0) {
/* Fall off the left edge - crop */
window->src_x += (osd_scale * osd_crop) >> 16;
window->src_w -= (osd_scale * osd_crop) >> 16;
window->dst_w -= osd_crop;
window->dst_x = 0;
}
else {
window->dst_x -= window->pan_x;
f->src_x += (osd_scale * osd_crop) >> 16;
f->src_w -= (osd_scale * osd_crop) >> 16;
f->dst_w -= osd_crop;
f->dst_x = 0;
} else {
f->dst_x -= f->pan_x;
}
if ((osd_crop = window->dst_w + window->dst_x - window->vis_w) > 0) {
if ((osd_crop = f->dst_w + f->dst_x - f->vis_w) > 0) {
/* Falls off the right edge - crop */
window->dst_w -= osd_crop;
window->src_w -= (osd_scale * osd_crop) >> 16;
f->dst_w -= osd_crop;
f->src_w -= (osd_scale * osd_crop) >> 16;
}
/* The OSD can be moved. Track to it */
window->dst_x += itv->yuv_info.osd_x_offset;
window->dst_y += itv->yuv_info.osd_y_offset;
f->dst_x += itv->yuv_info.osd_x_offset;
f->dst_y += itv->yuv_info.osd_y_offset;
/* Width & height for both src & dst must be even.
Same for coordinates. */
window->dst_w &= ~1;
window->dst_x &= ~1;
f->dst_w &= ~1;
f->dst_x &= ~1;
window->src_w += window->src_x & 1;
window->src_x &= ~1;
f->src_w += f->src_x & 1;
f->src_x &= ~1;
window->src_w &= ~1;
window->dst_w &= ~1;
f->src_w &= ~1;
f->dst_w &= ~1;
window->dst_h &= ~1;
window->dst_y &= ~1;
f->dst_h &= ~1;
f->dst_y &= ~1;
window->src_h += window->src_y & 1;
window->src_y &= ~1;
f->src_h += f->src_y & 1;
f->src_y &= ~1;
window->src_h &= ~1;
window->dst_h &= ~1;
f->src_h &= ~1;
f->dst_h &= ~1;
/* Due to rounding, we may have reduced the output size to <1/4 of the source
Check again, but this time just resize. Don't change source coordinates */
if (window->dst_w < window->src_w / 4) {
window->src_w &= ~3;
window->dst_w = window->src_w / 4;
window->dst_w += window->dst_w & 1;
/* Due to rounding, we may have reduced the output size to <1/4 of
the source. Check again, but this time just resize. Don't change
source coordinates */
if (f->dst_w < f->src_w / 4) {
f->src_w &= ~3;
f->dst_w = f->src_w / 4;
f->dst_w += f->dst_w & 1;
}
if (window->dst_h < window->src_h / 4) {
window->src_h &= ~3;
window->dst_h = window->src_h / 4;
window->dst_h += window->dst_h & 1;
if (f->dst_h < f->src_h / 4) {
f->src_h &= ~3;
f->dst_h = f->src_h / 4;
f->dst_h += f->dst_h & 1;
}
/* Check again. If there's nothing to safe to display, stop now */
if ((int)window->dst_w <= 2 || (int)window->dst_h <= 2 || (int)window->src_w <= 2 || (int)window->src_h <= 2) {
if ((int)f->dst_w <= 2 || (int)f->dst_h <= 2 ||
(int)f->src_w <= 2 || (int)f->src_h <= 2) {
return IVTV_YUV_UPDATE_INVALID;
}
/* Both x offset & width are linked, so they have to be done together */
if ((itv->yuv_info.old_frame_info.dst_w != window->dst_w) ||
(itv->yuv_info.old_frame_info.src_w != window->src_w) ||
(itv->yuv_info.old_frame_info.dst_x != window->dst_x) ||
(itv->yuv_info.old_frame_info.src_x != window->src_x) ||
(itv->yuv_info.old_frame_info.pan_x != window->pan_x) ||
(itv->yuv_info.old_frame_info.vis_w != window->vis_w)) {
if ((of->dst_w != f->dst_w) || (of->src_w != f->src_w) ||
(of->dst_x != f->dst_x) || (of->src_x != f->src_x) ||
(of->pan_x != f->pan_x) || (of->vis_w != f->vis_w)) {
yuv_update |= IVTV_YUV_UPDATE_HORIZONTAL;
}
if ((itv->yuv_info.old_frame_info.src_h != window->src_h) ||
(itv->yuv_info.old_frame_info.dst_h != window->dst_h) ||
(itv->yuv_info.old_frame_info.dst_y != window->dst_y) ||
(itv->yuv_info.old_frame_info.src_y != window->src_y) ||
(itv->yuv_info.old_frame_info.pan_y != window->pan_y) ||
(itv->yuv_info.old_frame_info.vis_h != window->vis_h) ||
(itv->yuv_info.old_frame_info.lace_mode != window->lace_mode) ||
(itv->yuv_info.old_frame_info.interlaced_y != window->interlaced_y) ||
(itv->yuv_info.old_frame_info.interlaced_uv != window->interlaced_uv)) {
if ((of->src_h != f->src_h) || (of->dst_h != f->dst_h) ||
(of->dst_y != f->dst_y) || (of->src_y != f->src_y) ||
(of->pan_y != f->pan_y) || (of->vis_h != f->vis_h) ||
(of->lace_mode != f->lace_mode) ||
(of->interlaced_y != f->interlaced_y) ||
(of->interlaced_uv != f->interlaced_uv)) {
yuv_update |= IVTV_YUV_UPDATE_VERTICAL;
}
@ -826,22 +775,22 @@ static u32 ivtv_yuv_window_setup (struct ivtv *itv, struct yuv_frame_info *windo
/* Update the scaling register to the requested value */
void ivtv_yuv_work_handler (struct ivtv *itv)
{
struct yuv_frame_info window;
struct yuv_playback_info *yi = &itv->yuv_info;
struct yuv_frame_info f;
int frame = yi->update_frame;
u32 yuv_update;
int frame = itv->yuv_info.update_frame;
/* IVTV_DEBUG_YUV("Update yuv registers for frame %d\n",frame); */
memcpy(&window, &itv->yuv_info.new_frame_info[frame], sizeof (window));
f = yi->new_frame_info[frame];
/* Update the osd pan info */
window.pan_x = itv->yuv_info.osd_x_pan;
window.pan_y = itv->yuv_info.osd_y_pan;
window.vis_w = itv->yuv_info.osd_vis_w;
window.vis_h = itv->yuv_info.osd_vis_h;
f.pan_x = itv->yuv_info.osd_x_pan;
f.pan_y = itv->yuv_info.osd_y_pan;
f.vis_w = itv->yuv_info.osd_vis_w;
f.vis_h = itv->yuv_info.osd_vis_h;
/* Calculate the display window coordinates. Exit if nothing left */
if (!(yuv_update = ivtv_yuv_window_setup (itv, &window)))
if (!(yuv_update = ivtv_yuv_window_setup (itv, &f)))
return;
if (yuv_update & IVTV_YUV_UPDATE_INVALID) {
@ -850,13 +799,12 @@ void ivtv_yuv_work_handler (struct ivtv *itv)
write_reg(0x00108080, 0x2898);
if (yuv_update & IVTV_YUV_UPDATE_HORIZONTAL)
ivtv_yuv_handle_horizontal(itv, &window);
ivtv_yuv_handle_horizontal(itv, &f);
if (yuv_update & IVTV_YUV_UPDATE_VERTICAL)
ivtv_yuv_handle_vertical(itv, &window);
ivtv_yuv_handle_vertical(itv, &f);
}
memcpy(&itv->yuv_info.old_frame_info, &window, sizeof (itv->yuv_info.old_frame_info));
yi->old_frame_info = f;
}
static void ivtv_yuv_init (struct ivtv *itv)
@ -986,58 +934,98 @@ void ivtv_yuv_setup_frame(struct ivtv *itv, struct ivtv_dma_frame *args)
{
struct yuv_playback_info *yi = &itv->yuv_info;
u8 frame = yi->draw_frame;
u8 last_frame = (u8)(frame - 1) % IVTV_YUV_BUFFERS;
struct yuv_frame_info *nf = &yi->new_frame_info[frame];
struct yuv_frame_info *of = &yi->new_frame_info[last_frame];
int lace_threshold = yi->lace_threshold;
/* Preserve old update flag in case we're overwriting a queued frame */
int register_update = yi->new_frame_info[frame].update;
int update = nf->update;
/* Take a snapshot of the yuv coordinate information */
yi->new_frame_info[frame].src_x = args->src.left;
yi->new_frame_info[frame].src_y = args->src.top;
yi->new_frame_info[frame].src_w = args->src.width;
yi->new_frame_info[frame].src_h = args->src.height;
yi->new_frame_info[frame].dst_x = args->dst.left;
yi->new_frame_info[frame].dst_y = args->dst.top;
yi->new_frame_info[frame].dst_w = args->dst.width;
yi->new_frame_info[frame].dst_h = args->dst.height;
yi->new_frame_info[frame].tru_x = args->dst.left;
yi->new_frame_info[frame].tru_w = args->src_width;
yi->new_frame_info[frame].tru_h = args->src_height;
/* Snapshot field order */
yi->sync_field[frame] = yi->lace_sync_field;
nf->src_x = args->src.left;
nf->src_y = args->src.top;
nf->src_w = args->src.width;
nf->src_h = args->src.height;
nf->dst_x = args->dst.left;
nf->dst_y = args->dst.top;
nf->dst_w = args->dst.width;
nf->dst_h = args->dst.height;
nf->tru_x = args->dst.left;
nf->tru_w = args->src_width;
nf->tru_h = args->src_height;
/* Are we going to offset the Y plane */
if (args->src.height + args->src.top < 512-16)
yi->new_frame_info[frame].offset_y = 1;
else
yi->new_frame_info[frame].offset_y = 0;
nf->offset_y = (nf->tru_h + nf->src_x < 512 - 16) ? 1 : 0;
/* Snapshot the osd pan info */
yi->new_frame_info[frame].pan_x = yi->osd_x_pan;
yi->new_frame_info[frame].pan_y = yi->osd_y_pan;
yi->new_frame_info[frame].vis_w = yi->osd_vis_w;
yi->new_frame_info[frame].vis_h = yi->osd_vis_h;
nf->pan_x = yi->osd_x_pan;
nf->pan_y = yi->osd_y_pan;
nf->vis_w = yi->osd_vis_w;
nf->vis_h = yi->osd_vis_h;
yi->new_frame_info[frame].update = 0;
yi->new_frame_info[frame].interlaced_y = 0;
yi->new_frame_info[frame].interlaced_uv = 0;
yi->new_frame_info[frame].lace_mode = yi->lace_mode & IVTV_YUV_MODE_MASK;
nf->update = 0;
nf->interlaced_y = 0;
nf->interlaced_uv = 0;
nf->delay = 0;
nf->sync_field = 0;
nf->lace_mode = yi->lace_mode & IVTV_YUV_MODE_MASK;
if (memcmp(&yi->old_frame_info_args, &yi->new_frame_info[frame],
sizeof(yi->new_frame_info[frame]))) {
yi->old_frame_info_args = yi->new_frame_info[frame];
yi->new_frame_info[frame].update = 1;
if (lace_threshold < 0)
lace_threshold = yi->decode_height - 1;
/* Work out the lace settings */
switch (nf->lace_mode) {
case IVTV_YUV_MODE_PROGRESSIVE: /* Progressive mode */
nf->interlaced = 0;
if (nf->tru_h < 512 || (nf->tru_h > 576 && nf->tru_h < 1021))
nf->interlaced_y = 0;
else
nf->interlaced_y = 1;
if (nf->tru_h < 1021 && (nf->dst_h >= nf->src_h / 2))
nf->interlaced_uv = 0;
else
nf->interlaced_uv = 1;
break;
case IVTV_YUV_MODE_AUTO:
if (nf->tru_h <= lace_threshold || nf->tru_h > 576 || nf->tru_w > 720) {
nf->interlaced = 0;
if ((nf->tru_h < 512) ||
(nf->tru_h > 576 && nf->tru_h < 1021) ||
(nf->tru_w > 720 && nf->tru_h < 1021))
nf->interlaced_y = 0;
else
nf->interlaced_y = 1;
if (nf->tru_h < 1021 && (nf->dst_h >= nf->src_h / 2))
nf->interlaced_uv = 0;
else
nf->interlaced_uv = 1;
} else {
nf->interlaced = 1;
nf->interlaced_y = 1;
nf->interlaced_uv = 1;
}
break;
case IVTV_YUV_MODE_INTERLACED: /* Interlace mode */
default:
nf->interlaced = 1;
nf->interlaced_y = 1;
nf->interlaced_uv = 1;
break;
}
if (memcmp(&yi->old_frame_info_args, nf, sizeof(*nf))) {
yi->old_frame_info_args = *nf;
nf->update = 1;
/* IVTV_DEBUG_YUV ("Requesting register update for frame %d\n",frame); */
}
yi->new_frame_info[frame].update |= register_update;
/* Should this frame be delayed ? */
if (yi->sync_field[frame] !=
yi->sync_field[(frame - 1) % IVTV_YUV_BUFFERS])
yi->field_delay[frame] = 1;
else
yi->field_delay[frame] = 0;
nf->update |= update;
nf->sync_field = yi->lace_sync_field;
nf->delay = nf->sync_field != of->sync_field;
}
/* Frame is complete & ready for display */