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path: root/drivers/media/video/cx18/cx18-av-vbi.c
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Diffstat (limited to 'drivers/media/video/cx18/cx18-av-vbi.c')
-rw-r--r--drivers/media/video/cx18/cx18-av-vbi.c325
1 files changed, 159 insertions, 166 deletions
diff --git a/drivers/media/video/cx18/cx18-av-vbi.c b/drivers/media/video/cx18/cx18-av-vbi.c
index 27699839b80d..23b31670bf1d 100644
--- a/drivers/media/video/cx18/cx18-av-vbi.c
+++ b/drivers/media/video/cx18/cx18-av-vbi.c
@@ -129,196 +129,189 @@ static int decode_vps(u8 *dst, u8 *p)
return err & 0xf0;
}
-int cx18_av_vbi(struct cx18 *cx, unsigned int cmd, void *arg)
+int cx18_av_vbi_g_fmt(struct cx18 *cx, struct v4l2_format *fmt)
{
struct cx18_av_state *state = &cx->av_state;
- struct v4l2_format *fmt;
struct v4l2_sliced_vbi_format *svbi;
+ static const u16 lcr2vbi[] = {
+ 0, V4L2_SLICED_TELETEXT_B, 0, /* 1 */
+ 0, V4L2_SLICED_WSS_625, 0, /* 4 */
+ V4L2_SLICED_CAPTION_525, /* 6 */
+ 0, 0, V4L2_SLICED_VPS, 0, 0, /* 9 */
+ 0, 0, 0, 0
+ };
+ int is_pal = !(state->std & V4L2_STD_525_60);
+ int i;
- switch (cmd) {
- case VIDIOC_G_FMT:
- {
- static u16 lcr2vbi[] = {
- 0, V4L2_SLICED_TELETEXT_B, 0, /* 1 */
- 0, V4L2_SLICED_WSS_625, 0, /* 4 */
- V4L2_SLICED_CAPTION_525, /* 6 */
- 0, 0, V4L2_SLICED_VPS, 0, 0, /* 9 */
- 0, 0, 0, 0
- };
- int is_pal = !(state->std & V4L2_STD_525_60);
- int i;
-
- fmt = arg;
- if (fmt->type != V4L2_BUF_TYPE_SLICED_VBI_CAPTURE)
- return -EINVAL;
- svbi = &fmt->fmt.sliced;
- memset(svbi, 0, sizeof(*svbi));
- /* we're done if raw VBI is active */
- if ((cx18_av_read(cx, 0x404) & 0x10) == 0)
- break;
-
- if (is_pal) {
- for (i = 7; i <= 23; i++) {
- u8 v = cx18_av_read(cx, 0x424 + i - 7);
-
- svbi->service_lines[0][i] = lcr2vbi[v >> 4];
- svbi->service_lines[1][i] = lcr2vbi[v & 0xf];
- svbi->service_set |= svbi->service_lines[0][i] |
- svbi->service_lines[1][i];
- }
- } else {
- for (i = 10; i <= 21; i++) {
- u8 v = cx18_av_read(cx, 0x424 + i - 10);
-
- svbi->service_lines[0][i] = lcr2vbi[v >> 4];
- svbi->service_lines[1][i] = lcr2vbi[v & 0xf];
- svbi->service_set |= svbi->service_lines[0][i] |
- svbi->service_lines[1][i];
- }
- }
- break;
- }
+ if (fmt->type != V4L2_BUF_TYPE_SLICED_VBI_CAPTURE)
+ return -EINVAL;
+ svbi = &fmt->fmt.sliced;
+ memset(svbi, 0, sizeof(*svbi));
+ /* we're done if raw VBI is active */
+ if ((cx18_av_read(cx, 0x404) & 0x10) == 0)
+ return 0;
+
+ if (is_pal) {
+ for (i = 7; i <= 23; i++) {
+ u8 v = cx18_av_read(cx, 0x424 + i - 7);
- case VIDIOC_S_FMT:
- {
- int is_pal = !(state->std & V4L2_STD_525_60);
- int i, x;
- u8 lcr[24];
-
- fmt = arg;
- if (fmt->type != V4L2_BUF_TYPE_SLICED_VBI_CAPTURE &&
- fmt->type != V4L2_BUF_TYPE_VBI_CAPTURE)
- return -EINVAL;
- svbi = &fmt->fmt.sliced;
- if (fmt->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
- /* raw VBI */
- memset(svbi, 0, sizeof(*svbi));
-
- /* Setup standard */
- cx18_av_std_setup(cx);
-
- /* VBI Offset */
- cx18_av_write(cx, 0x47f, state->slicer_line_delay);
- cx18_av_write(cx, 0x404, 0x2e);
- break;
+ svbi->service_lines[0][i] = lcr2vbi[v >> 4];
+ svbi->service_lines[1][i] = lcr2vbi[v & 0xf];
+ svbi->service_set |= svbi->service_lines[0][i] |
+ svbi->service_lines[1][i];
}
+ } else {
+ for (i = 10; i <= 21; i++) {
+ u8 v = cx18_av_read(cx, 0x424 + i - 10);
+
+ svbi->service_lines[0][i] = lcr2vbi[v >> 4];
+ svbi->service_lines[1][i] = lcr2vbi[v & 0xf];
+ svbi->service_set |= svbi->service_lines[0][i] |
+ svbi->service_lines[1][i];
+ }
+ }
+ return 0;
+}
- for (x = 0; x <= 23; x++)
- lcr[x] = 0x00;
+int cx18_av_vbi_s_fmt(struct cx18 *cx, struct v4l2_format *fmt)
+{
+ struct cx18_av_state *state = &cx->av_state;
+ struct v4l2_sliced_vbi_format *svbi;
+ int is_pal = !(state->std & V4L2_STD_525_60);
+ int i, x;
+ u8 lcr[24];
+
+ if (fmt->type != V4L2_BUF_TYPE_SLICED_VBI_CAPTURE &&
+ fmt->type != V4L2_BUF_TYPE_VBI_CAPTURE)
+ return -EINVAL;
+ svbi = &fmt->fmt.sliced;
+ if (fmt->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
+ /* raw VBI */
+ memset(svbi, 0, sizeof(*svbi));
/* Setup standard */
cx18_av_std_setup(cx);
- /* Sliced VBI */
- cx18_av_write(cx, 0x404, 0x32); /* Ancillary data */
- cx18_av_write(cx, 0x406, 0x13);
+ /* VBI Offset */
cx18_av_write(cx, 0x47f, state->slicer_line_delay);
+ cx18_av_write(cx, 0x404, 0x2e);
+ return 0;
+ }
- /* Force impossible lines to 0 */
- if (is_pal) {
- for (i = 0; i <= 6; i++)
- svbi->service_lines[0][i] =
- svbi->service_lines[1][i] = 0;
- } else {
- for (i = 0; i <= 9; i++)
- svbi->service_lines[0][i] =
- svbi->service_lines[1][i] = 0;
-
- for (i = 22; i <= 23; i++)
- svbi->service_lines[0][i] =
- svbi->service_lines[1][i] = 0;
- }
+ for (x = 0; x <= 23; x++)
+ lcr[x] = 0x00;
+
+ /* Setup standard */
+ cx18_av_std_setup(cx);
+
+ /* Sliced VBI */
+ cx18_av_write(cx, 0x404, 0x32); /* Ancillary data */
+ cx18_av_write(cx, 0x406, 0x13);
+ cx18_av_write(cx, 0x47f, state->slicer_line_delay);
+
+ /* Force impossible lines to 0 */
+ if (is_pal) {
+ for (i = 0; i <= 6; i++)
+ svbi->service_lines[0][i] =
+ svbi->service_lines[1][i] = 0;
+ } else {
+ for (i = 0; i <= 9; i++)
+ svbi->service_lines[0][i] =
+ svbi->service_lines[1][i] = 0;
+
+ for (i = 22; i <= 23; i++)
+ svbi->service_lines[0][i] =
+ svbi->service_lines[1][i] = 0;
+ }
- /* Build register values for requested service lines */
- for (i = 7; i <= 23; i++) {
- for (x = 0; x <= 1; x++) {
- switch (svbi->service_lines[1-x][i]) {
- case V4L2_SLICED_TELETEXT_B:
- lcr[i] |= 1 << (4 * x);
- break;
- case V4L2_SLICED_WSS_625:
- lcr[i] |= 4 << (4 * x);
- break;
- case V4L2_SLICED_CAPTION_525:
- lcr[i] |= 6 << (4 * x);
- break;
- case V4L2_SLICED_VPS:
- lcr[i] |= 9 << (4 * x);
- break;
- }
+ /* Build register values for requested service lines */
+ for (i = 7; i <= 23; i++) {
+ for (x = 0; x <= 1; x++) {
+ switch (svbi->service_lines[1-x][i]) {
+ case V4L2_SLICED_TELETEXT_B:
+ lcr[i] |= 1 << (4 * x);
+ break;
+ case V4L2_SLICED_WSS_625:
+ lcr[i] |= 4 << (4 * x);
+ break;
+ case V4L2_SLICED_CAPTION_525:
+ lcr[i] |= 6 << (4 * x);
+ break;
+ case V4L2_SLICED_VPS:
+ lcr[i] |= 9 << (4 * x);
+ break;
}
}
+ }
- if (is_pal) {
- for (x = 1, i = 0x424; i <= 0x434; i++, x++)
- cx18_av_write(cx, i, lcr[6 + x]);
- } else {
- for (x = 1, i = 0x424; i <= 0x430; i++, x++)
- cx18_av_write(cx, i, lcr[9 + x]);
- for (i = 0x431; i <= 0x434; i++)
- cx18_av_write(cx, i, 0);
- }
+ if (is_pal) {
+ for (x = 1, i = 0x424; i <= 0x434; i++, x++)
+ cx18_av_write(cx, i, lcr[6 + x]);
+ } else {
+ for (x = 1, i = 0x424; i <= 0x430; i++, x++)
+ cx18_av_write(cx, i, lcr[9 + x]);
+ for (i = 0x431; i <= 0x434; i++)
+ cx18_av_write(cx, i, 0);
+ }
- cx18_av_write(cx, 0x43c, 0x16);
- /* FIXME - should match vblank set in cx18_av_std_setup() */
- cx18_av_write(cx, 0x474, is_pal ? 0x2a : 26);
- break;
+ cx18_av_write(cx, 0x43c, 0x16);
+ /* FIXME - should match vblank set in cx18_av_std_setup() */
+ cx18_av_write(cx, 0x474, is_pal ? 0x2a : 26);
+ return 0;
+}
+
+int cx18_av_decode_vbi_line(struct v4l2_subdev *sd,
+ struct v4l2_decode_vbi_line *vbi)
+{
+ struct cx18 *cx = v4l2_get_subdevdata(sd);
+ struct cx18_av_state *state = &cx->av_state;
+ struct vbi_anc_data *anc = (struct vbi_anc_data *)vbi->p;
+ u8 *p;
+ int did, sdid, l, err = 0;
+
+ /*
+ * Check for the ancillary data header for sliced VBI
+ */
+ if (anc->preamble[0] ||
+ anc->preamble[1] != 0xff || anc->preamble[2] != 0xff ||
+ (anc->did != sliced_vbi_did[0] &&
+ anc->did != sliced_vbi_did[1])) {
+ vbi->line = vbi->type = 0;
+ return 0;
}
- case VIDIOC_INT_DECODE_VBI_LINE:
- {
- struct v4l2_decode_vbi_line *vbi = arg;
- u8 *p;
- struct vbi_anc_data *anc = (struct vbi_anc_data *) vbi->p;
- int did, sdid, l, err = 0;
-
- /*
- * Check for the ancillary data header for sliced VBI
- */
- if (anc->preamble[0] ||
- anc->preamble[1] != 0xff || anc->preamble[2] != 0xff ||
- (anc->did != sliced_vbi_did[0] &&
- anc->did != sliced_vbi_did[1])) {
- vbi->line = vbi->type = 0;
- break;
- }
+ did = anc->did;
+ sdid = anc->sdid & 0xf;
+ l = anc->idid[0] & 0x3f;
+ l += state->slicer_line_offset;
+ p = anc->payload;
- did = anc->did;
- sdid = anc->sdid & 0xf;
- l = anc->idid[0] & 0x3f;
- l += state->slicer_line_offset;
- p = anc->payload;
-
- /* Decode the SDID set by the slicer */
- switch (sdid) {
- case 1:
- sdid = V4L2_SLICED_TELETEXT_B;
- break;
- case 4:
- sdid = V4L2_SLICED_WSS_625;
- break;
- case 6:
- sdid = V4L2_SLICED_CAPTION_525;
- err = !odd_parity(p[0]) || !odd_parity(p[1]);
- break;
- case 9:
- sdid = V4L2_SLICED_VPS;
- if (decode_vps(p, p) != 0)
- err = 1;
- break;
- default:
- sdid = 0;
+ /* Decode the SDID set by the slicer */
+ switch (sdid) {
+ case 1:
+ sdid = V4L2_SLICED_TELETEXT_B;
+ break;
+ case 4:
+ sdid = V4L2_SLICED_WSS_625;
+ break;
+ case 6:
+ sdid = V4L2_SLICED_CAPTION_525;
+ err = !odd_parity(p[0]) || !odd_parity(p[1]);
+ break;
+ case 9:
+ sdid = V4L2_SLICED_VPS;
+ if (decode_vps(p, p) != 0)
err = 1;
- break;
- }
-
- vbi->type = err ? 0 : sdid;
- vbi->line = err ? 0 : l;
- vbi->is_second_field = err ? 0 : (did == sliced_vbi_did[1]);
- vbi->p = p;
break;
- }
+ default:
+ sdid = 0;
+ err = 1;
+ break;
}
+ vbi->type = err ? 0 : sdid;
+ vbi->line = err ? 0 : l;
+ vbi->is_second_field = err ? 0 : (did == sliced_vbi_did[1]);
+ vbi->p = p;
return 0;
}
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-14 16:16:37 +0300