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Diffstat (limited to 'ANDROID_3.4.5/drivers/media/video/ivtv/ivtv-vbi.c')
-rw-r--r--ANDROID_3.4.5/drivers/media/video/ivtv/ivtv-vbi.c549
1 files changed, 0 insertions, 549 deletions
diff --git a/ANDROID_3.4.5/drivers/media/video/ivtv/ivtv-vbi.c b/ANDROID_3.4.5/drivers/media/video/ivtv/ivtv-vbi.c
deleted file mode 100644
index 293db806..00000000
--- a/ANDROID_3.4.5/drivers/media/video/ivtv/ivtv-vbi.c
+++ /dev/null
@@ -1,549 +0,0 @@
-/*
- Vertical Blank Interval support functions
- Copyright (C) 2004-2007 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 "ivtv-driver.h"
-#include "ivtv-i2c.h"
-#include "ivtv-ioctl.h"
-#include "ivtv-queue.h"
-#include "ivtv-cards.h"
-#include "ivtv-vbi.h"
-
-static void ivtv_set_vps(struct ivtv *itv, int enabled)
-{
- struct v4l2_sliced_vbi_data data;
-
- if (!(itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT))
- return;
- data.id = V4L2_SLICED_VPS;
- data.field = 0;
- data.line = enabled ? 16 : 0;
- data.data[2] = itv->vbi.vps_payload.data[0];
- data.data[8] = itv->vbi.vps_payload.data[1];
- data.data[9] = itv->vbi.vps_payload.data[2];
- data.data[10] = itv->vbi.vps_payload.data[3];
- data.data[11] = itv->vbi.vps_payload.data[4];
- ivtv_call_hw(itv, IVTV_HW_SAA7127, vbi, s_vbi_data, &data);
-}
-
-static void ivtv_set_cc(struct ivtv *itv, int mode, const struct vbi_cc *cc)
-{
- struct v4l2_sliced_vbi_data data;
-
- if (!(itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT))
- return;
- data.id = V4L2_SLICED_CAPTION_525;
- data.field = 0;
- data.line = (mode & 1) ? 21 : 0;
- data.data[0] = cc->odd[0];
- data.data[1] = cc->odd[1];
- ivtv_call_hw(itv, IVTV_HW_SAA7127, vbi, s_vbi_data, &data);
- data.field = 1;
- data.line = (mode & 2) ? 21 : 0;
- data.data[0] = cc->even[0];
- data.data[1] = cc->even[1];
- ivtv_call_hw(itv, IVTV_HW_SAA7127, vbi, s_vbi_data, &data);
-}
-
-static void ivtv_set_wss(struct ivtv *itv, int enabled, int mode)
-{
- struct v4l2_sliced_vbi_data data;
-
- if (!(itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT))
- return;
- /* When using a 50 Hz system, always turn on the
- wide screen signal with 4x3 ratio as the default.
- Turning this signal on and off can confuse certain
- TVs. As far as I can tell there is no reason not to
- transmit this signal. */
- if ((itv->std_out & V4L2_STD_625_50) && !enabled) {
- enabled = 1;
- mode = 0x08; /* 4x3 full format */
- }
- data.id = V4L2_SLICED_WSS_625;
- data.field = 0;
- data.line = enabled ? 23 : 0;
- data.data[0] = mode & 0xff;
- data.data[1] = (mode >> 8) & 0xff;
- ivtv_call_hw(itv, IVTV_HW_SAA7127, vbi, s_vbi_data, &data);
-}
-
-static int odd_parity(u8 c)
-{
- c ^= (c >> 4);
- c ^= (c >> 2);
- c ^= (c >> 1);
-
- return c & 1;
-}
-
-static void ivtv_write_vbi_line(struct ivtv *itv,
- const struct v4l2_sliced_vbi_data *d,
- struct vbi_cc *cc, int *found_cc)
-{
- struct vbi_info *vi = &itv->vbi;
-
- if (d->id == V4L2_SLICED_CAPTION_525 && d->line == 21) {
- if (d->field) {
- cc->even[0] = d->data[0];
- cc->even[1] = d->data[1];
- } else {
- cc->odd[0] = d->data[0];
- cc->odd[1] = d->data[1];
- }
- *found_cc = 1;
- } else if (d->id == V4L2_SLICED_VPS && d->line == 16 && d->field == 0) {
- struct vbi_vps vps;
-
- vps.data[0] = d->data[2];
- vps.data[1] = d->data[8];
- vps.data[2] = d->data[9];
- vps.data[3] = d->data[10];
- vps.data[4] = d->data[11];
- if (memcmp(&vps, &vi->vps_payload, sizeof(vps))) {
- vi->vps_payload = vps;
- set_bit(IVTV_F_I_UPDATE_VPS, &itv->i_flags);
- }
- } else if (d->id == V4L2_SLICED_WSS_625 &&
- d->line == 23 && d->field == 0) {
- int wss = d->data[0] | d->data[1] << 8;
-
- if (vi->wss_payload != wss) {
- vi->wss_payload = wss;
- set_bit(IVTV_F_I_UPDATE_WSS, &itv->i_flags);
- }
- }
-}
-
-static void ivtv_write_vbi_cc_lines(struct ivtv *itv, const struct vbi_cc *cc)
-{
- struct vbi_info *vi = &itv->vbi;
-
- if (vi->cc_payload_idx < ARRAY_SIZE(vi->cc_payload)) {
- memcpy(&vi->cc_payload[vi->cc_payload_idx], cc,
- sizeof(struct vbi_cc));
- vi->cc_payload_idx++;
- set_bit(IVTV_F_I_UPDATE_CC, &itv->i_flags);
- }
-}
-
-static void ivtv_write_vbi(struct ivtv *itv,
- const struct v4l2_sliced_vbi_data *sliced,
- size_t cnt)
-{
- struct vbi_cc cc = { .odd = { 0x80, 0x80 }, .even = { 0x80, 0x80 } };
- int found_cc = 0;
- size_t i;
-
- for (i = 0; i < cnt; i++)
- ivtv_write_vbi_line(itv, sliced + i, &cc, &found_cc);
-
- if (found_cc)
- ivtv_write_vbi_cc_lines(itv, &cc);
-}
-
-ssize_t
-ivtv_write_vbi_from_user(struct ivtv *itv,
- const struct v4l2_sliced_vbi_data __user *sliced,
- size_t cnt)
-{
- struct vbi_cc cc = { .odd = { 0x80, 0x80 }, .even = { 0x80, 0x80 } };
- int found_cc = 0;
- size_t i;
- struct v4l2_sliced_vbi_data d;
- ssize_t ret = cnt * sizeof(struct v4l2_sliced_vbi_data);
-
- for (i = 0; i < cnt; i++) {
- if (copy_from_user(&d, sliced + i,
- sizeof(struct v4l2_sliced_vbi_data))) {
- ret = -EFAULT;
- break;
- }
- ivtv_write_vbi_line(itv, &d, &cc, &found_cc);
- }
-
- if (found_cc)
- ivtv_write_vbi_cc_lines(itv, &cc);
-
- return ret;
-}
-
-static void copy_vbi_data(struct ivtv *itv, 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 = itv->vbi.frame % IVTV_VBI_FRAMES;
- u8 *dst = &itv->vbi.sliced_mpeg_data[idx][0];
-
- for (i = 0; i < lines; i++) {
- int f, l;
-
- if (itv->vbi.sliced_data[i].id == 0)
- continue;
-
- l = itv->vbi.sliced_data[i].line - 6;
- f = itv->vbi.sliced_data[i].field;
- if (f)
- l += 18;
- if (l < 32)
- linemask[0] |= (1 << l);
- else
- linemask[1] |= (1 << (l - 32));
- dst[sd + 12 + line * 43] =
- ivtv_service2vbi(itv->vbi.sliced_data[i].id);
- memcpy(dst + sd + 12 + line * 43 + 1, itv->vbi.sliced_data[i].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, "itv0", 4);
- cpu_to_le32s(&linemask[0]);
- cpu_to_le32s(&linemask[1]);
- 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);
- itv->vbi.sliced_mpeg_size[idx] = sd + size;
-}
-
-static int ivtv_convert_ivtv_vbi(struct ivtv *itv, u8 *p)
-{
- u32 linemask[2];
- int i, l, id2;
- int line = 0;
-
- if (!memcmp(p, "itv0", 4)) {
- memcpy(linemask, p + 4, 8);
- p += 12;
- } else if (!memcmp(p, "ITV0", 4)) {
- linemask[0] = 0xffffffff;
- linemask[1] = 0xf;
- p += 4;
- } else {
- /* unknown VBI data, convert to empty VBI frame */
- linemask[0] = linemask[1] = 0;
- }
- for (i = 0; i < 36; i++) {
- int err = 0;
-
- if (i < 32 && !(linemask[0] & (1 << i)))
- continue;
- if (i >= 32 && !(linemask[1] & (1 << (i - 32))))
- continue;
- id2 = *p & 0xf;
- switch (id2) {
- case IVTV_SLICED_TYPE_TELETEXT_B:
- id2 = V4L2_SLICED_TELETEXT_B;
- break;
- case IVTV_SLICED_TYPE_CAPTION_525:
- id2 = V4L2_SLICED_CAPTION_525;
- err = !odd_parity(p[1]) || !odd_parity(p[2]);
- break;
- case IVTV_SLICED_TYPE_VPS:
- id2 = V4L2_SLICED_VPS;
- break;
- case IVTV_SLICED_TYPE_WSS_625:
- id2 = V4L2_SLICED_WSS_625;
- break;
- default:
- id2 = 0;
- break;
- }
- if (err == 0) {
- l = (i < 18) ? i + 6 : i - 18 + 6;
- itv->vbi.sliced_dec_data[line].line = l;
- itv->vbi.sliced_dec_data[line].field = i >= 18;
- itv->vbi.sliced_dec_data[line].id = id2;
- memcpy(itv->vbi.sliced_dec_data[line].data, p + 1, 42);
- line++;
- }
- p += 43;
- }
- while (line < 36) {
- itv->vbi.sliced_dec_data[line].id = 0;
- itv->vbi.sliced_dec_data[line].line = 0;
- itv->vbi.sliced_dec_data[line].field = 0;
- line++;
- }
- return line * sizeof(itv->vbi.sliced_dec_data[0]);
-}
-
-/* Compress raw VBI format, removes leading SAV codes and surplus space after the
- field.
- Returns new compressed size. */
-static u32 compress_raw_buf(struct ivtv *itv, u8 *buf, u32 size)
-{
- u32 line_size = itv->vbi.raw_decoder_line_size;
- u32 lines = itv->vbi.count;
- u8 sav1 = itv->vbi.raw_decoder_sav_odd_field;
- u8 sav2 = itv->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 ivtv *itv, u32 line, u8 *buf, u32 size, u8 sav)
-{
- u32 line_size = itv->vbi.sliced_decoder_line_size;
- struct v4l2_decode_vbi_line vbi;
- int i;
- unsigned lines = 0;
-
- /* 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;
- v4l2_subdev_call(itv->sd_video, vbi, decode_vbi_line, &vbi);
- if (vbi.type && !(lines & (1 << vbi.line))) {
- lines |= 1 << vbi.line;
- itv->vbi.sliced_data[line].id = vbi.type;
- itv->vbi.sliced_data[line].field = vbi.is_second_field;
- itv->vbi.sliced_data[line].line = vbi.line;
- memcpy(itv->vbi.sliced_data[line].data, vbi.p, 42);
- line++;
- }
- }
- return line;
-}
-
-void ivtv_process_vbi_data(struct ivtv *itv, struct ivtv_buffer *buf,
- u64 pts_stamp, int streamtype)
-{
- u8 *p = (u8 *) buf->buf;
- u32 size = buf->bytesused;
- int y;
-
- /* Raw VBI data */
- if (streamtype == IVTV_ENC_STREAM_TYPE_VBI && ivtv_raw_vbi(itv)) {
- u8 type;
-
- ivtv_buf_swap(buf);
-
- type = p[3];
-
- size = buf->bytesused = compress_raw_buf(itv, p, size);
-
- /* second field of the frame? */
- if (type == itv->vbi.raw_decoder_sav_even_field) {
- /* Dirty hack needed for backwards
- compatibility of old VBI software. */
- p += size - 4;
- memcpy(p, &itv->vbi.frame, 4);
- itv->vbi.frame++;
- }
- return;
- }
-
- /* Sliced VBI data with data insertion */
- if (streamtype == IVTV_ENC_STREAM_TYPE_VBI) {
- int lines;
-
- ivtv_buf_swap(buf);
-
- /* first field */
- lines = compress_sliced_buf(itv, 0, p, size / 2,
- itv->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(itv, lines, p + size / 2 - 32, size / 2 + 32,
- itv->vbi.sliced_decoder_sav_even_field);
- /* always return at least one empty line */
- if (lines == 0) {
- itv->vbi.sliced_data[0].id = 0;
- itv->vbi.sliced_data[0].line = 0;
- itv->vbi.sliced_data[0].field = 0;
- lines = 1;
- }
- buf->bytesused = size = lines * sizeof(itv->vbi.sliced_data[0]);
- memcpy(p, &itv->vbi.sliced_data[0], size);
-
- if (itv->vbi.insert_mpeg) {
- copy_vbi_data(itv, lines, pts_stamp);
- }
- itv->vbi.frame++;
- return;
- }
-
- /* Sliced VBI re-inserted from an MPEG stream */
- if (streamtype == IVTV_DEC_STREAM_TYPE_VBI) {
- /* If the size is not 4-byte aligned, then the starting address
- for the swapping is also shifted. After swapping the data the
- real start address of the VBI data is exactly 4 bytes after the
- original start. It's a bit fiddly but it works like a charm.
- Non-4-byte alignment happens when an lseek is done on the input
- mpeg file to a non-4-byte aligned position. So on arrival here
- the VBI data is also non-4-byte aligned. */
- int offset = size & 3;
- int cnt;
-
- if (offset) {
- p += 4 - offset;
- }
- /* Swap Buffer */
- for (y = 0; y < size; y += 4) {
- swab32s((u32 *)(p + y));
- }
-
- cnt = ivtv_convert_ivtv_vbi(itv, p + offset);
- memcpy(buf->buf, itv->vbi.sliced_dec_data, cnt);
- buf->bytesused = cnt;
-
- ivtv_write_vbi(itv, itv->vbi.sliced_dec_data,
- cnt / sizeof(itv->vbi.sliced_dec_data[0]));
- return;
- }
-}
-
-void ivtv_disable_cc(struct ivtv *itv)
-{
- struct vbi_cc cc = { .odd = { 0x80, 0x80 }, .even = { 0x80, 0x80 } };
-
- clear_bit(IVTV_F_I_UPDATE_CC, &itv->i_flags);
- ivtv_set_cc(itv, 0, &cc);
- itv->vbi.cc_payload_idx = 0;
-}
-
-
-void ivtv_vbi_work_handler(struct ivtv *itv)
-{
- struct vbi_info *vi = &itv->vbi;
- struct v4l2_sliced_vbi_data data;
- struct vbi_cc cc = { .odd = { 0x80, 0x80 }, .even = { 0x80, 0x80 } };
-
- /* Lock */
- if (itv->output_mode == OUT_PASSTHROUGH) {
- if (itv->is_50hz) {
- data.id = V4L2_SLICED_WSS_625;
- data.field = 0;
-
- if (v4l2_subdev_call(itv->sd_video, vbi, g_vbi_data, &data) == 0) {
- ivtv_set_wss(itv, 1, data.data[0] & 0xf);
- vi->wss_missing_cnt = 0;
- } else if (vi->wss_missing_cnt == 4) {
- ivtv_set_wss(itv, 1, 0x8); /* 4x3 full format */
- } else {
- vi->wss_missing_cnt++;
- }
- }
- else {
- int mode = 0;
-
- data.id = V4L2_SLICED_CAPTION_525;
- data.field = 0;
- if (v4l2_subdev_call(itv->sd_video, vbi, g_vbi_data, &data) == 0) {
- mode |= 1;
- cc.odd[0] = data.data[0];
- cc.odd[1] = data.data[1];
- }
- data.field = 1;
- if (v4l2_subdev_call(itv->sd_video, vbi, g_vbi_data, &data) == 0) {
- mode |= 2;
- cc.even[0] = data.data[0];
- cc.even[1] = data.data[1];
- }
- if (mode) {
- vi->cc_missing_cnt = 0;
- ivtv_set_cc(itv, mode, &cc);
- } else if (vi->cc_missing_cnt == 4) {
- ivtv_set_cc(itv, 0, &cc);
- } else {
- vi->cc_missing_cnt++;
- }
- }
- return;
- }
-
- if (test_and_clear_bit(IVTV_F_I_UPDATE_WSS, &itv->i_flags)) {
- ivtv_set_wss(itv, 1, vi->wss_payload & 0xf);
- }
-
- if (test_bit(IVTV_F_I_UPDATE_CC, &itv->i_flags)) {
- if (vi->cc_payload_idx == 0) {
- clear_bit(IVTV_F_I_UPDATE_CC, &itv->i_flags);
- ivtv_set_cc(itv, 3, &cc);
- }
- while (vi->cc_payload_idx) {
- cc = vi->cc_payload[0];
-
- memcpy(vi->cc_payload, vi->cc_payload + 1,
- sizeof(vi->cc_payload) - sizeof(vi->cc_payload[0]));
- vi->cc_payload_idx--;
- if (vi->cc_payload_idx && cc.odd[0] == 0x80 && cc.odd[1] == 0x80)
- continue;
-
- ivtv_set_cc(itv, 3, &cc);
- break;
- }
- }
-
- if (test_and_clear_bit(IVTV_F_I_UPDATE_VPS, &itv->i_flags)) {
- ivtv_set_vps(itv, 1);
- }
-}
generated by cgit (git 2.34.1) at 2025-02-12 00:45:13 +0000