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path: root/drivers/media/video/cx18/cx18-vbi.c
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Diffstat (limited to 'drivers/media/video/cx18/cx18-vbi.c')
-rw-r--r--drivers/media/video/cx18/cx18-vbi.c211
1 files changed, 0 insertions, 211 deletions
diff --git a/drivers/media/video/cx18/cx18-vbi.c b/drivers/media/video/cx18/cx18-vbi.c
deleted file mode 100644
index fb595bd548e..00000000000
--- a/drivers/media/video/cx18/cx18-vbi.c
+++ /dev/null
@@ -1,211 +0,0 @@
-/*
- * cx18 Vertical Blank Interval support functions
- *
- * Derived from ivtv-vbi.c
- *
- * Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- * 02111-1307 USA
- */
-
-#include "cx18-driver.h"
-#include "cx18-vbi.h"
-#include "cx18-ioctl.h"
-#include "cx18-queue.h"
-#include "cx18-av-core.h"
-
-static void copy_vbi_data(struct cx18 *cx, int lines, u32 pts_stamp)
-{
- int line = 0;
- int i;
- u32 linemask[2] = { 0, 0 };
- unsigned short size;
- static const u8 mpeg_hdr_data[] = {
- 0x00, 0x00, 0x01, 0xba, 0x44, 0x00, 0x0c, 0x66,
- 0x24, 0x01, 0x01, 0xd1, 0xd3, 0xfa, 0xff, 0xff,
- 0x00, 0x00, 0x01, 0xbd, 0x00, 0x1a, 0x84, 0x80,
- 0x07, 0x21, 0x00, 0x5d, 0x63, 0xa7, 0xff, 0xff
- };
- const int sd = sizeof(mpeg_hdr_data); /* start of vbi data */
- int idx = cx->vbi.frame % CX18_VBI_FRAMES;
- u8 *dst = &cx->vbi.sliced_mpeg_data[idx][0];
-
- for (i = 0; i < lines; i++) {
- struct v4l2_sliced_vbi_data *sdata = cx->vbi.sliced_data + i;
- int f, l;
-
- if (sdata->id == 0)
- continue;
-
- l = sdata->line - 6;
- f = sdata->field;
- if (f)
- l += 18;
- if (l < 32)
- linemask[0] |= (1 << l);
- else
- linemask[1] |= (1 << (l - 32));
- dst[sd + 12 + line * 43] = cx18_service2vbi(sdata->id);
- memcpy(dst + sd + 12 + line * 43 + 1, sdata->data, 42);
- line++;
- }
- memcpy(dst, mpeg_hdr_data, sizeof(mpeg_hdr_data));
- if (line == 36) {
- /* All lines are used, so there is no space for the linemask
- (the max size of the VBI data is 36 * 43 + 4 bytes).
- So in this case we use the magic number 'ITV0'. */
- memcpy(dst + sd, "ITV0", 4);
- memcpy(dst + sd + 4, dst + sd + 12, line * 43);
- size = 4 + ((43 * line + 3) & ~3);
- } else {
- memcpy(dst + sd, "cx0", 4);
- memcpy(dst + sd + 4, &linemask[0], 8);
- size = 12 + ((43 * line + 3) & ~3);
- }
- dst[4+16] = (size + 10) >> 8;
- dst[5+16] = (size + 10) & 0xff;
- dst[9+16] = 0x21 | ((pts_stamp >> 29) & 0x6);
- dst[10+16] = (pts_stamp >> 22) & 0xff;
- dst[11+16] = 1 | ((pts_stamp >> 14) & 0xff);
- dst[12+16] = (pts_stamp >> 7) & 0xff;
- dst[13+16] = 1 | ((pts_stamp & 0x7f) << 1);
- cx->vbi.sliced_mpeg_size[idx] = sd + size;
-}
-
-/* Compress raw VBI format, removes leading SAV codes and surplus space
- after the field.
- Returns new compressed size. */
-static u32 compress_raw_buf(struct cx18 *cx, u8 *buf, u32 size)
-{
- u32 line_size = cx->vbi.raw_decoder_line_size;
- u32 lines = cx->vbi.count;
- u8 sav1 = cx->vbi.raw_decoder_sav_odd_field;
- u8 sav2 = cx->vbi.raw_decoder_sav_even_field;
- u8 *q = buf;
- u8 *p;
- int i;
-
- for (i = 0; i < lines; i++) {
- p = buf + i * line_size;
-
- /* Look for SAV code */
- if (p[0] != 0xff || p[1] || p[2] ||
- (p[3] != sav1 && p[3] != sav2))
- break;
- memcpy(q, p + 4, line_size - 4);
- q += line_size - 4;
- }
- return lines * (line_size - 4);
-}
-
-
-/* Compressed VBI format, all found sliced blocks put next to one another
- Returns new compressed size */
-static u32 compress_sliced_buf(struct cx18 *cx, u32 line, u8 *buf,
- u32 size, u8 sav)
-{
- u32 line_size = cx->vbi.sliced_decoder_line_size;
- struct v4l2_decode_vbi_line vbi;
- int i;
-
- /* find the first valid line */
- for (i = 0; i < size; i++, buf++) {
- if (buf[0] == 0xff && !buf[1] && !buf[2] && buf[3] == sav)
- break;
- }
-
- size -= i;
- if (size < line_size)
- return line;
- for (i = 0; i < size / line_size; i++) {
- u8 *p = buf + i * line_size;
-
- /* Look for SAV code */
- if (p[0] != 0xff || p[1] || p[2] || p[3] != sav)
- continue;
- vbi.p = p + 4;
- cx18_av_cmd(cx, VIDIOC_INT_DECODE_VBI_LINE, &vbi);
- if (vbi.type) {
- cx->vbi.sliced_data[line].id = vbi.type;
- cx->vbi.sliced_data[line].field = vbi.is_second_field;
- cx->vbi.sliced_data[line].line = vbi.line;
- memcpy(cx->vbi.sliced_data[line].data, vbi.p, 42);
- line++;
- }
- }
- return line;
-}
-
-void cx18_process_vbi_data(struct cx18 *cx, struct cx18_buffer *buf,
- u64 pts_stamp, int streamtype)
-{
- u8 *p = (u8 *) buf->buf;
- u32 size = buf->bytesused;
- int lines;
-
- if (streamtype != CX18_ENC_STREAM_TYPE_VBI)
- return;
-
- /* Raw VBI data */
- if (cx18_raw_vbi(cx)) {
- u8 type;
-
- cx18_buf_swap(buf);
-
- /* Skip 12 bytes of header that gets stuffed in */
- size -= 12;
- memcpy(p, &buf->buf[12], size);
- type = p[3];
-
- size = buf->bytesused = compress_raw_buf(cx, p, size);
-
- /* second field of the frame? */
- if (type == cx->vbi.raw_decoder_sav_even_field) {
- /* Dirty hack needed for backwards
- compatibility of old VBI software. */
- p += size - 4;
- memcpy(p, &cx->vbi.frame, 4);
- cx->vbi.frame++;
- }
- return;
- }
-
- /* Sliced VBI data with data insertion */
- cx18_buf_swap(buf);
-
- /* first field */
- lines = compress_sliced_buf(cx, 0, p, size / 2,
- cx->vbi.sliced_decoder_sav_odd_field);
- /* second field */
- /* experimentation shows that the second half does not always
- begin at the exact address. So start a bit earlier
- (hence 32). */
- lines = compress_sliced_buf(cx, lines, p + size / 2 - 32,
- size / 2 + 32, cx->vbi.sliced_decoder_sav_even_field);
- /* always return at least one empty line */
- if (lines == 0) {
- cx->vbi.sliced_data[0].id = 0;
- cx->vbi.sliced_data[0].line = 0;
- cx->vbi.sliced_data[0].field = 0;
- lines = 1;
- }
- buf->bytesused = size = lines * sizeof(cx->vbi.sliced_data[0]);
- memcpy(p, &cx->vbi.sliced_data[0], size);
-
- if (cx->vbi.insert_mpeg)
- copy_vbi_data(cx, lines, pts_stamp);
- cx->vbi.frame++;
-}
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