aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/media/video/vivi.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/media/video/vivi.c')
-rw-r--r--drivers/media/video/vivi.c99
1 files changed, 50 insertions, 49 deletions
diff --git a/drivers/media/video/vivi.c b/drivers/media/video/vivi.c
index cd7266858462..7705fc6baf00 100644
--- a/drivers/media/video/vivi.c
+++ b/drivers/media/video/vivi.c
@@ -343,6 +343,53 @@ static struct bar_std bars[] = {
343#define TO_U(r, g, b) \ 343#define TO_U(r, g, b) \
344 (((-9714 * r - 19070 * g + 28784 * b + 32768) >> 16) + 128) 344 (((-9714 * r - 19070 * g + 28784 * b + 32768) >> 16) + 128)
345 345
346/* precalculate color bar values to speed up rendering */
347static void precalculate_bars(struct vivi_fh *fh)
348{
349 struct vivi_dev *dev = fh->dev;
350 unsigned char r, g, b;
351 int k, is_yuv;
352
353 fh->input = dev->input;
354
355 for (k = 0; k < 8; k++) {
356 r = bars[fh->input].bar[k][0];
357 g = bars[fh->input].bar[k][1];
358 b = bars[fh->input].bar[k][2];
359 is_yuv = 0;
360
361 switch (fh->fmt->fourcc) {
362 case V4L2_PIX_FMT_YUYV:
363 case V4L2_PIX_FMT_UYVY:
364 is_yuv = 1;
365 break;
366 case V4L2_PIX_FMT_RGB565:
367 case V4L2_PIX_FMT_RGB565X:
368 r >>= 3;
369 g >>= 2;
370 b >>= 3;
371 break;
372 case V4L2_PIX_FMT_RGB555:
373 case V4L2_PIX_FMT_RGB555X:
374 r >>= 3;
375 g >>= 3;
376 b >>= 3;
377 break;
378 }
379
380 if (is_yuv) {
381 fh->bars[k][0] = TO_Y(r, g, b); /* Luma */
382 fh->bars[k][1] = TO_U(r, g, b); /* Cb */
383 fh->bars[k][2] = TO_V(r, g, b); /* Cr */
384 } else {
385 fh->bars[k][0] = r;
386 fh->bars[k][1] = g;
387 fh->bars[k][2] = b;
388 }
389 }
390
391}
392
346#define TSTAMP_MIN_Y 24 393#define TSTAMP_MIN_Y 24
347#define TSTAMP_MAX_Y (TSTAMP_MIN_Y + 15) 394#define TSTAMP_MAX_Y (TSTAMP_MIN_Y + 15)
348#define TSTAMP_INPUT_X 10 395#define TSTAMP_INPUT_X 10
@@ -755,6 +802,8 @@ buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
755 buf->vb.height = fh->height; 802 buf->vb.height = fh->height;
756 buf->vb.field = field; 803 buf->vb.field = field;
757 804
805 precalculate_bars(fh);
806
758 if (VIDEOBUF_NEEDS_INIT == buf->vb.state) { 807 if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
759 rc = videobuf_iolock(vq, &buf->vb, NULL); 808 rc = videobuf_iolock(vq, &buf->vb, NULL);
760 if (rc < 0) 809 if (rc < 0)
@@ -893,53 +942,6 @@ static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
893 return 0; 942 return 0;
894} 943}
895 944
896/* precalculate color bar values to speed up rendering */
897static void precalculate_bars(struct vivi_fh *fh)
898{
899 struct vivi_dev *dev = fh->dev;
900 unsigned char r, g, b;
901 int k, is_yuv;
902
903 fh->input = dev->input;
904
905 for (k = 0; k < 8; k++) {
906 r = bars[fh->input].bar[k][0];
907 g = bars[fh->input].bar[k][1];
908 b = bars[fh->input].bar[k][2];
909 is_yuv = 0;
910
911 switch (fh->fmt->fourcc) {
912 case V4L2_PIX_FMT_YUYV:
913 case V4L2_PIX_FMT_UYVY:
914 is_yuv = 1;
915 break;
916 case V4L2_PIX_FMT_RGB565:
917 case V4L2_PIX_FMT_RGB565X:
918 r >>= 3;
919 g >>= 2;
920 b >>= 3;
921 break;
922 case V4L2_PIX_FMT_RGB555:
923 case V4L2_PIX_FMT_RGB555X:
924 r >>= 3;
925 g >>= 3;
926 b >>= 3;
927 break;
928 }
929
930 if (is_yuv) {
931 fh->bars[k][0] = TO_Y(r, g, b); /* Luma */
932 fh->bars[k][1] = TO_U(r, g, b); /* Cb */
933 fh->bars[k][2] = TO_V(r, g, b); /* Cr */
934 } else {
935 fh->bars[k][0] = r;
936 fh->bars[k][1] = g;
937 fh->bars[k][2] = b;
938 }
939 }
940
941}
942
943/*FIXME: This seems to be generic enough to be at videodev2 */ 945/*FIXME: This seems to be generic enough to be at videodev2 */
944static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, 946static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
945 struct v4l2_format *f) 947 struct v4l2_format *f)
@@ -965,8 +967,6 @@ static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
965 fh->vb_vidq.field = f->fmt.pix.field; 967 fh->vb_vidq.field = f->fmt.pix.field;
966 fh->type = f->type; 968 fh->type = f->type;
967 969
968 precalculate_bars(fh);
969
970 ret = 0; 970 ret = 0;
971out: 971out:
972 mutex_unlock(&q->vb_lock); 972 mutex_unlock(&q->vb_lock);
@@ -1357,6 +1357,7 @@ static int __init vivi_create_instance(int inst)
1357 goto unreg_dev; 1357 goto unreg_dev;
1358 1358
1359 *vfd = vivi_template; 1359 *vfd = vivi_template;
1360 vfd->debug = debug;
1360 1361
1361 ret = video_register_device(vfd, VFL_TYPE_GRABBER, video_nr); 1362 ret = video_register_device(vfd, VFL_TYPE_GRABBER, video_nr);
1362 if (ret < 0) 1363 if (ret < 0)