Teletext support for tv:// (v4l and v4l2 only)

modified patch from Otvos Attila oattila at chello dot hu

Module uses zvbi library for all low-level  VBI operations (like I/O with vbi
device, converting vbi pages into usefull vbi_page stuctures, rendering them
into RGB32 images).

All teletext related stuff (except properties, slave commands and rendering
osd in text mode or RGB32 rendered teletext pages in spu mode) is implemented
in tvi_vbi.c

New properties:
teletext_page - switching between pages
teletext_mode - switch between on/off/opaque/transparent modes
teletext_format - (currently read-only) allows to get format info
(black/white,gray,text)
teletext_half_page - trivial zooming (displaying top/bottom half of teletext
page)

New slave commands:
teletext_add_dec - user interface for jumping to any page by editing page number
interactively
teletext_go_link - goes though links, specified on current page



git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@23530 b3059339-0415-0410-9bf9-f77b7e298cf2

3 files changed, 45 insertions, 1 deletions

diff --git a/DOCS/man/en/mplayer.1 b/DOCS/man/en/mplayer.1
index 2fb65fedc8..d60c50837a 100644
--- a/DOCS/man/en/mplayer.1
+++ b/DOCS/man/en/mplayer.1
@@ -421,6 +421,26 @@ Confirm choice.
 .PP
 .RS
 .
+(The following keys are only valid if teletext support is enabled during
+compilation: they are used for controlling TV teletext)
+.RE
+.PP
+.PD 0
+.RS
+.IPs "X"
+Switch teletext between on, off and transparent mode.
+.IPs "Q"
+Next teletext page.
+.IPs "W"
+Previous teletext page.
+.IPs "E"
+In text mode flips top or bottom piece of page otherwise
+zooms teletext page: top or bottom or normal.
+.RE
+.PD 1
+.PP
+.RS
+.
 .TP
 .B mouse control
 .PD 0
@@ -1851,6 +1871,12 @@ MJPEG compression:
 .IPs quality=<0\-100>
 Choose the quality of the JPEG compression
 (< 60 recommended for full size).
+.IPs tdevice=<value>  (default: none)
+Specify TV teletext device (example: /dev/\:vbi0).
+.IPs tformat=<text|bw|gray|color> (default: gray)
+Specify TV teletext display mode. (Note: color mode requires color SPU support.)
+.IPs tpage=<100-999> (default: 100)
+Specify starting TV teletext page number .
 .RE
 .
 .TP
diff --git a/DOCS/tech/MAINTAINERS b/DOCS/tech/MAINTAINERS
index bddb74f2e8..a0b3c4832a 100644
--- a/DOCS/tech/MAINTAINERS
+++ b/DOCS/tech/MAINTAINERS
@@ -77,6 +77,7 @@ MPlayer code:
     * libmpdemux: Roberto Togni, Nico Sabbi
     * libmpcodecs: Roberto Togni
     * TV input/capture: Vladimir Voroshilov
+    * TV teletext: Vladimir Voroshilov
     * network streaming: Roberto Togni, Nico Sabbi, Benjamin Zores
     * DVD/VOB subtitles: None
     * config files & commandline parser: Alban Bedel
diff --git a/DOCS/tech/slave.txt b/DOCS/tech/slave.txt
index 09e1ef31ea..b1d1158ebb 100644
--- a/DOCS/tech/slave.txt
+++ b/DOCS/tech/slave.txt
@@ -314,6 +314,19 @@ switch_vsync [value]
     Toggle vsync (1 == on, 0 == off). If [value] is not provided,
     vsync status is inverted.
 
+teletext_add_dec <value>
+    On/off teletext page number editing mode and append given digit to
+    previously entered one
+    0..9 - append apropriate digit (enables editing mode if called from normal mode, and
+           switches to normal mode when third digit is entered.
+    -    - delete last digit from page number (backspace amulation, works only in page number
+           editing mode)
+
+teletext_go_link <value>
+    Follow given links on current teletext page
+    0    - go to initial page (specified by -tv tpage= parameter)
+    1..6 - follow given link
+
 tv_step_channel <channel>
     Select next/previous TV channel.
 
@@ -446,4 +459,8 @@ tv_brightness      int       -100    100     X   X   X
 tv_contrast        int       -100    100     X   X   X
 tv_saturation      int       -100    100     X   X   X
 tv_hue             int       -100    100     X   X   X
-
+teletext_page      int       100     999     X   X   X
+teletext_mode      int       0       3       X   X   X    0 - off, 1 - opaque, 2 - transparent,
+                                                          3 - transparent inverted (bw format)
+teletext_format    int       0       3       X            0 - text, 1 - b/w, 2 - gray, 3 - color
+teletext_half_page int       0       2       X   X   X    0 - off, 1 - top half, 2- bottom half