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

1 files changed, 149 insertions, 0 deletions

diff --git a/command.c b/command.c
index ca7338004d..5466176741 100644
--- a/command.c
+++ b/command.c
@@ -1415,6 +1415,134 @@ static int mp_property_tv_color(m_option_t * prop, int action, void *arg,
 
 #endif
 
+#ifdef HAVE_TV_TELETEXT
+/// teletext page (RW)
+static int mp_property_teletext_page(m_option_t * prop, int action, void *arg,
+                  MPContext * mpctx)
+{
+    int val,result;
+    tvi_handle_t *tvh = mpctx->demuxer->priv;
+    if (mpctx->demuxer->type != DEMUXER_TYPE_TV || !tvh || !tvh->priv_vbi)
+        return M_PROPERTY_UNAVAILABLE;
+
+    switch (action) {
+    case M_PROPERTY_SET:
+        if (!arg)
+            return M_PROPERTY_ERROR;
+        M_PROPERTY_CLAMP(prop, *(int *) arg);
+        result=tv_teletext_control(tvh, TVI_CONTROL_VBI_SET_PAGE, arg);
+	break;
+    case M_PROPERTY_GET:
+        if (!arg)
+            return M_PROPERTY_ERROR;
+        result=tv_teletext_control(tvh, TVI_CONTROL_VBI_GET_PAGE, arg);
+	break;
+    case M_PROPERTY_STEP_UP:
+    case M_PROPERTY_STEP_DOWN:
+        val = (arg ? *(int *) arg : 1) * (action == M_PROPERTY_STEP_DOWN ? -1 : 1);
+        result=tv_teletext_control(tvh, TVI_CONTROL_VBI_STEP_PAGE, &val);
+	break;
+    default:
+        return M_PROPERTY_NOT_IMPLEMENTED;
+    }
+    return (result==TVI_CONTROL_TRUE?M_PROPERTY_OK:M_PROPERTY_ERROR);
+}
+/// VBI teletext mode (RW)
+static int mp_property_teletext_mode(m_option_t * prop, int action, void *arg,
+                  MPContext * mpctx)
+{
+    int val,result;
+    tvi_handle_t *tvh = mpctx->demuxer->priv;
+    if (mpctx->demuxer->type != DEMUXER_TYPE_TV || !tvh || !tvh->priv_vbi)
+        return M_PROPERTY_UNAVAILABLE;
+
+    switch (action) {
+    case M_PROPERTY_SET:
+        if (!arg)
+            return M_PROPERTY_ERROR;
+        M_PROPERTY_CLAMP(prop, *(int *) arg);
+        result=tv_teletext_control(tvh, TVI_CONTROL_VBI_SET_MODE, arg);
+	break;
+    case M_PROPERTY_GET:
+        if (!arg)
+            return M_PROPERTY_ERROR;
+        result=tv_teletext_control(tvh, TVI_CONTROL_VBI_GET_MODE, arg);
+	break;
+    case M_PROPERTY_STEP_UP:
+    case M_PROPERTY_STEP_DOWN:    
+        val = (arg ? *(int *) arg : 1) * (action == M_PROPERTY_STEP_DOWN ? -1 : 1);
+        result=tv_teletext_control(tvh, TVI_CONTROL_VBI_STEP_MODE, &val);
+	break;
+    default:
+        return M_PROPERTY_NOT_IMPLEMENTED;
+    }
+    return (result==TVI_CONTROL_TRUE?M_PROPERTY_OK:M_PROPERTY_ERROR);
+}
+/// VBI teletext format (R)
+static int mp_property_teletext_format(m_option_t * prop, int action, void *arg,
+                  MPContext * mpctx)
+{
+    int val,result;
+    tvi_handle_t *tvh = mpctx->demuxer->priv;
+    if (mpctx->demuxer->type != DEMUXER_TYPE_TV || !tvh || !tvh->priv_vbi)
+        return M_PROPERTY_UNAVAILABLE;
+
+    switch (action) {
+    case M_PROPERTY_GET:
+        if (!arg)
+            return M_PROPERTY_ERROR;
+        result=tv_teletext_control(tvh, TVI_CONTROL_VBI_GET_FORMAT, arg);
+	break;
+    case M_PROPERTY_SET:
+        if (!arg)
+            return M_PROPERTY_ERROR;
+        M_PROPERTY_CLAMP(prop, *(int *) arg);
+        result=tv_teletext_control(tvh, TVI_CONTROL_VBI_SET_FORMAT, arg);
+	break;
+    case M_PROPERTY_STEP_UP:
+    case M_PROPERTY_STEP_DOWN:
+        val = (arg ? *(int *) arg : 1) * (action == M_PROPERTY_STEP_DOWN ? -1 : 1);
+        result=tv_teletext_control(tvh, TVI_CONTROL_VBI_STEP_FORMAT, &val);
+	break;
+    default:
+        return M_PROPERTY_NOT_IMPLEMENTED;
+    }
+    return (result==TVI_CONTROL_TRUE?M_PROPERTY_OK:M_PROPERTY_ERROR);
+}
+
+/// VBI teletext half-page mode (RW)
+static int mp_property_teletext_half_page(m_option_t * prop, int action, void *arg,
+                  MPContext * mpctx)
+{
+    int val,result;
+    tvi_handle_t *tvh = mpctx->demuxer->priv;
+    if (mpctx->demuxer->type != DEMUXER_TYPE_TV || !tvh || !tvh->priv_vbi)
+        return M_PROPERTY_UNAVAILABLE;
+
+    switch (action) {
+    case M_PROPERTY_GET:
+        if (!arg)
+            return M_PROPERTY_ERROR;
+        result=tv_teletext_control(tvh, TVI_CONTROL_VBI_GET_HALF_PAGE, arg);
+	break;
+    case M_PROPERTY_SET:
+        if (!arg)
+            return M_PROPERTY_ERROR;
+        M_PROPERTY_CLAMP(prop, *(int *) arg);
+        result=tv_teletext_control(tvh, TVI_CONTROL_VBI_SET_HALF_PAGE, arg);
+	break;
+    case M_PROPERTY_STEP_UP:
+    case M_PROPERTY_STEP_DOWN:
+        val = (arg ? *(int *) arg : 1) * (action == M_PROPERTY_STEP_DOWN ? -1 : 1);
+        result=tv_teletext_control(tvh, TVI_CONTROL_VBI_STEP_HALF_PAGE, &val);
+	break;
+    default:
+        return M_PROPERTY_NOT_IMPLEMENTED;
+    }
+    return (result==TVI_CONTROL_TRUE?M_PROPERTY_OK:M_PROPERTY_ERROR);
+}
+#endif /* HAVE_TV_TELETEXT */
+
 ///@}
 
 /// All properties available in MPlayer.
@@ -1540,6 +1668,17 @@ static m_option_t mp_properties[] = {
      M_OPT_RANGE, -100, 100, (void *) TV_COLOR_HUE },
 #endif
 
+#ifdef HAVE_TV_TELETEXT
+    { "teletext_page", mp_property_teletext_page, CONF_TYPE_INT,
+     M_OPT_RANGE, -999, 999, NULL },
+    { "teletext_mode", mp_property_teletext_mode, CONF_TYPE_INT,
+     M_OPT_RANGE, 0, 3, NULL },
+    { "teletext_format", mp_property_teletext_format, CONF_TYPE_INT,
+     M_OPT_RANGE, 0, 3, NULL },
+    { "teletext_half_page", mp_property_teletext_half_page, CONF_TYPE_INT,
+     M_OPT_RANGE, 0, 2, NULL },
+#endif
+
     { NULL, NULL, NULL, 0, 0, 0, NULL }
 };
 
@@ -2233,6 +2372,16 @@ int run_command(MPContext * mpctx, mp_cmd_t * cmd)
 	    if (mpctx->file_format == DEMUXER_TYPE_TV)
 		tv_step_chanlist((tvi_handle_t *) (mpctx->demuxer->priv));
 	    break;
+#ifdef HAVE_TV_TELETEXT
+        case MP_CMD_TV_TELETEXT_ADD_DEC:
+            if (mpctx->file_format == DEMUXER_TYPE_TV)
+                tv_teletext_add_dec((tvi_handle_t *) (mpctx->demuxer->priv),cmd->args[0].v.s);
+            break;
+        case MP_CMD_TV_TELETEXT_GO_LINK:
+            if (mpctx->file_format == DEMUXER_TYPE_TV)
+                tv_teletext_go_link((tvi_handle_t *) (mpctx->demuxer->priv),cmd->args[0].v.i);
+            break;
+#endif /* HAVE_TV_TELETEXT */
 #endif				/* USE_TV */
 
 	case MP_CMD_SUB_LOAD: