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authorIan Armstrong <ian@iarmst.demon.co.uk>2007-10-22 14:24:26 -0300
committerMauro Carvalho Chehab <mchehab@infradead.org>2008-01-25 19:03:10 -0200
commit3b5c1c8e71eb8fe2297a5884db59108e3c8b44c5 (patch)
tree39161a925790139e733137c5114e4419d3e45983 /drivers/media/video/ivtv/ivtv-irq.c
parent406c8b0ff0891ace87440bcb298a91c1927f9ae5 (diff)
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>
Diffstat (limited to 'drivers/media/video/ivtv/ivtv-irq.c')
-rw-r--r--drivers/media/video/ivtv/ivtv-irq.c19
1 files changed, 11 insertions, 8 deletions
diff --git a/drivers/media/video/ivtv/ivtv-irq.c b/drivers/media/video/ivtv/ivtv-irq.c
index 8c00d8f6d4d9..dd0dd8d126de 100644
--- a/drivers/media/video/ivtv/ivtv-irq.c
+++ b/drivers/media/video/ivtv/ivtv-irq.c
@@ -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);