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bcb63314e2
Drop the FSF's postal address from the source code files that typically
contain mostly the license text. Of the 628 removed instances, 578 are
outdated.
The patch has been created with the following command without manual edits:
git grep -l "675 Mass Ave\|59 Temple Place\|51 Franklin St" -- \
drivers/media/ include/media|while read i; do i=$i perl -e '
open(F,"< $ENV{i}");
$a=join("", <F>);
$a =~ s/[ \t]*\*\n.*You should.*\n.*along with.*\n.*(\n.*USA.*$)?\n//m
&& $a =~ s/(^.*)Or, (point your browser to) /$1To obtain the license, $2\n$1/m;
close(F);
open(F, "> $ENV{i}");
print F $a;
close(F);'; done
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
309 lines
8.5 KiB
C
309 lines
8.5 KiB
C
/*
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* cx18 ADEC VBI functions
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*
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* Derived from cx25840-vbi.c
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*
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* Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include "cx18-driver.h"
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/*
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* For sliced VBI output, we set up to use VIP-1.1, 8-bit mode,
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* NN counts 1 byte Dwords, an IDID with the VBI line # in it.
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* Thus, according to the VIP-2 Spec, our VBI ancillary data lines
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* (should!) look like:
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* 4 byte EAV code: 0xff 0x00 0x00 0xRP
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* unknown number of possible idle bytes
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* 3 byte Anc data preamble: 0x00 0xff 0xff
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* 1 byte data identifier: ne010iii (parity bits, 010, DID bits)
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* 1 byte secondary data id: nessssss (parity bits, SDID bits)
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* 1 byte data word count: necccccc (parity bits, NN Dword count)
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* 2 byte Internal DID: VBI-line-# 0x80
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* NN data bytes
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* 1 byte checksum
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* Fill bytes needed to fil out to 4*NN bytes of payload
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*
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* The RP codes for EAVs when in VIP-1.1 mode, not in raw mode, &
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* in the vertical blanking interval are:
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* 0xb0 (Task 0 VerticalBlank HorizontalBlank 0 0 0 0)
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* 0xf0 (Task EvenField VerticalBlank HorizontalBlank 0 0 0 0)
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*
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* Since the V bit is only allowed to toggle in the EAV RP code, just
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* before the first active region line and for active lines, they are:
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* 0x90 (Task 0 0 HorizontalBlank 0 0 0 0)
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* 0xd0 (Task EvenField 0 HorizontalBlank 0 0 0 0)
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*
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* The user application DID bytes we care about are:
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* 0x91 (1 0 010 0 !ActiveLine AncDataPresent)
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* 0x55 (0 1 010 2ndField !ActiveLine AncDataPresent)
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*
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*/
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static const u8 sliced_vbi_did[2] = { 0x91, 0x55 };
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struct vbi_anc_data {
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/* u8 eav[4]; */
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/* u8 idle[]; Variable number of idle bytes */
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u8 preamble[3];
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u8 did;
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u8 sdid;
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u8 data_count;
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u8 idid[2];
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u8 payload[1]; /* data_count of payload */
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/* u8 checksum; */
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/* u8 fill[]; Variable number of fill bytes */
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};
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static int odd_parity(u8 c)
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{
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c ^= (c >> 4);
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c ^= (c >> 2);
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c ^= (c >> 1);
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return c & 1;
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}
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static int decode_vps(u8 *dst, u8 *p)
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{
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static const u8 biphase_tbl[] = {
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0xf0, 0x78, 0x70, 0xf0, 0xb4, 0x3c, 0x34, 0xb4,
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0xb0, 0x38, 0x30, 0xb0, 0xf0, 0x78, 0x70, 0xf0,
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0xd2, 0x5a, 0x52, 0xd2, 0x96, 0x1e, 0x16, 0x96,
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0x92, 0x1a, 0x12, 0x92, 0xd2, 0x5a, 0x52, 0xd2,
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0xd0, 0x58, 0x50, 0xd0, 0x94, 0x1c, 0x14, 0x94,
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0x90, 0x18, 0x10, 0x90, 0xd0, 0x58, 0x50, 0xd0,
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0xf0, 0x78, 0x70, 0xf0, 0xb4, 0x3c, 0x34, 0xb4,
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0xb0, 0x38, 0x30, 0xb0, 0xf0, 0x78, 0x70, 0xf0,
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0xe1, 0x69, 0x61, 0xe1, 0xa5, 0x2d, 0x25, 0xa5,
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0xa1, 0x29, 0x21, 0xa1, 0xe1, 0x69, 0x61, 0xe1,
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0xc3, 0x4b, 0x43, 0xc3, 0x87, 0x0f, 0x07, 0x87,
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0x83, 0x0b, 0x03, 0x83, 0xc3, 0x4b, 0x43, 0xc3,
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0xc1, 0x49, 0x41, 0xc1, 0x85, 0x0d, 0x05, 0x85,
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0x81, 0x09, 0x01, 0x81, 0xc1, 0x49, 0x41, 0xc1,
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0xe1, 0x69, 0x61, 0xe1, 0xa5, 0x2d, 0x25, 0xa5,
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0xa1, 0x29, 0x21, 0xa1, 0xe1, 0x69, 0x61, 0xe1,
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0xe0, 0x68, 0x60, 0xe0, 0xa4, 0x2c, 0x24, 0xa4,
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0xa0, 0x28, 0x20, 0xa0, 0xe0, 0x68, 0x60, 0xe0,
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0xc2, 0x4a, 0x42, 0xc2, 0x86, 0x0e, 0x06, 0x86,
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0x82, 0x0a, 0x02, 0x82, 0xc2, 0x4a, 0x42, 0xc2,
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0xc0, 0x48, 0x40, 0xc0, 0x84, 0x0c, 0x04, 0x84,
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0x80, 0x08, 0x00, 0x80, 0xc0, 0x48, 0x40, 0xc0,
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0xe0, 0x68, 0x60, 0xe0, 0xa4, 0x2c, 0x24, 0xa4,
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0xa0, 0x28, 0x20, 0xa0, 0xe0, 0x68, 0x60, 0xe0,
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0xf0, 0x78, 0x70, 0xf0, 0xb4, 0x3c, 0x34, 0xb4,
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0xb0, 0x38, 0x30, 0xb0, 0xf0, 0x78, 0x70, 0xf0,
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0xd2, 0x5a, 0x52, 0xd2, 0x96, 0x1e, 0x16, 0x96,
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0x92, 0x1a, 0x12, 0x92, 0xd2, 0x5a, 0x52, 0xd2,
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0xd0, 0x58, 0x50, 0xd0, 0x94, 0x1c, 0x14, 0x94,
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0x90, 0x18, 0x10, 0x90, 0xd0, 0x58, 0x50, 0xd0,
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0xf0, 0x78, 0x70, 0xf0, 0xb4, 0x3c, 0x34, 0xb4,
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0xb0, 0x38, 0x30, 0xb0, 0xf0, 0x78, 0x70, 0xf0,
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};
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u8 c, err = 0;
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int i;
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for (i = 0; i < 2 * 13; i += 2) {
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err |= biphase_tbl[p[i]] | biphase_tbl[p[i + 1]];
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c = (biphase_tbl[p[i + 1]] & 0xf) |
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((biphase_tbl[p[i]] & 0xf) << 4);
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dst[i / 2] = c;
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}
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return err & 0xf0;
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}
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int cx18_av_g_sliced_fmt(struct v4l2_subdev *sd, struct v4l2_sliced_vbi_format *svbi)
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{
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struct cx18 *cx = v4l2_get_subdevdata(sd);
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struct cx18_av_state *state = &cx->av_state;
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static const u16 lcr2vbi[] = {
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0, V4L2_SLICED_TELETEXT_B, 0, /* 1 */
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0, V4L2_SLICED_WSS_625, 0, /* 4 */
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V4L2_SLICED_CAPTION_525, /* 6 */
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0, 0, V4L2_SLICED_VPS, 0, 0, /* 9 */
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0, 0, 0, 0
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};
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int is_pal = !(state->std & V4L2_STD_525_60);
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int i;
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memset(svbi->service_lines, 0, sizeof(svbi->service_lines));
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svbi->service_set = 0;
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/* we're done if raw VBI is active */
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if ((cx18_av_read(cx, 0x404) & 0x10) == 0)
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return 0;
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if (is_pal) {
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for (i = 7; i <= 23; i++) {
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u8 v = cx18_av_read(cx, 0x424 + i - 7);
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svbi->service_lines[0][i] = lcr2vbi[v >> 4];
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svbi->service_lines[1][i] = lcr2vbi[v & 0xf];
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svbi->service_set |= svbi->service_lines[0][i] |
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svbi->service_lines[1][i];
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}
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} else {
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for (i = 10; i <= 21; i++) {
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u8 v = cx18_av_read(cx, 0x424 + i - 10);
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svbi->service_lines[0][i] = lcr2vbi[v >> 4];
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svbi->service_lines[1][i] = lcr2vbi[v & 0xf];
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svbi->service_set |= svbi->service_lines[0][i] |
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svbi->service_lines[1][i];
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}
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}
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return 0;
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}
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int cx18_av_s_raw_fmt(struct v4l2_subdev *sd, struct v4l2_vbi_format *fmt)
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{
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struct cx18 *cx = v4l2_get_subdevdata(sd);
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struct cx18_av_state *state = &cx->av_state;
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/* Setup standard */
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cx18_av_std_setup(cx);
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/* VBI Offset */
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cx18_av_write(cx, 0x47f, state->slicer_line_delay);
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cx18_av_write(cx, 0x404, 0x2e);
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return 0;
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}
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int cx18_av_s_sliced_fmt(struct v4l2_subdev *sd, struct v4l2_sliced_vbi_format *svbi)
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{
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struct cx18 *cx = v4l2_get_subdevdata(sd);
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struct cx18_av_state *state = &cx->av_state;
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int is_pal = !(state->std & V4L2_STD_525_60);
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int i, x;
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u8 lcr[24];
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for (x = 0; x <= 23; x++)
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lcr[x] = 0x00;
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/* Setup standard */
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cx18_av_std_setup(cx);
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/* Sliced VBI */
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cx18_av_write(cx, 0x404, 0x32); /* Ancillary data */
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cx18_av_write(cx, 0x406, 0x13);
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cx18_av_write(cx, 0x47f, state->slicer_line_delay);
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/* Force impossible lines to 0 */
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if (is_pal) {
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for (i = 0; i <= 6; i++)
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svbi->service_lines[0][i] =
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svbi->service_lines[1][i] = 0;
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} else {
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for (i = 0; i <= 9; i++)
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svbi->service_lines[0][i] =
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svbi->service_lines[1][i] = 0;
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for (i = 22; i <= 23; i++)
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svbi->service_lines[0][i] =
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svbi->service_lines[1][i] = 0;
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}
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/* Build register values for requested service lines */
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for (i = 7; i <= 23; i++) {
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for (x = 0; x <= 1; x++) {
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switch (svbi->service_lines[1-x][i]) {
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case V4L2_SLICED_TELETEXT_B:
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lcr[i] |= 1 << (4 * x);
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break;
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case V4L2_SLICED_WSS_625:
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lcr[i] |= 4 << (4 * x);
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break;
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case V4L2_SLICED_CAPTION_525:
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lcr[i] |= 6 << (4 * x);
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break;
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case V4L2_SLICED_VPS:
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lcr[i] |= 9 << (4 * x);
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break;
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}
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}
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}
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if (is_pal) {
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for (x = 1, i = 0x424; i <= 0x434; i++, x++)
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cx18_av_write(cx, i, lcr[6 + x]);
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} else {
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for (x = 1, i = 0x424; i <= 0x430; i++, x++)
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cx18_av_write(cx, i, lcr[9 + x]);
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for (i = 0x431; i <= 0x434; i++)
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cx18_av_write(cx, i, 0);
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}
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cx18_av_write(cx, 0x43c, 0x16);
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/* Should match vblank set in cx18_av_std_setup() */
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cx18_av_write(cx, 0x474, is_pal ? 38 : 26);
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return 0;
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}
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int cx18_av_decode_vbi_line(struct v4l2_subdev *sd,
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struct v4l2_decode_vbi_line *vbi)
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{
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struct cx18 *cx = v4l2_get_subdevdata(sd);
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struct cx18_av_state *state = &cx->av_state;
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struct vbi_anc_data *anc = (struct vbi_anc_data *)vbi->p;
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u8 *p;
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int did, sdid, l, err = 0;
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/*
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* Check for the ancillary data header for sliced VBI
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*/
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if (anc->preamble[0] ||
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anc->preamble[1] != 0xff || anc->preamble[2] != 0xff ||
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(anc->did != sliced_vbi_did[0] &&
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anc->did != sliced_vbi_did[1])) {
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vbi->line = vbi->type = 0;
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return 0;
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}
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did = anc->did;
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sdid = anc->sdid & 0xf;
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l = anc->idid[0] & 0x3f;
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l += state->slicer_line_offset;
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p = anc->payload;
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/* Decode the SDID set by the slicer */
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switch (sdid) {
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case 1:
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sdid = V4L2_SLICED_TELETEXT_B;
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break;
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case 4:
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sdid = V4L2_SLICED_WSS_625;
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break;
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case 6:
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sdid = V4L2_SLICED_CAPTION_525;
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err = !odd_parity(p[0]) || !odd_parity(p[1]);
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break;
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case 9:
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sdid = V4L2_SLICED_VPS;
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if (decode_vps(p, p) != 0)
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err = 1;
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break;
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default:
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sdid = 0;
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err = 1;
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break;
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}
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vbi->type = err ? 0 : sdid;
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vbi->line = err ? 0 : l;
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vbi->is_second_field = err ? 0 : (did == sliced_vbi_did[1]);
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vbi->p = p;
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return 0;
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}
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