diff options
Diffstat (limited to 'ext/teletextdec/gstteletextdec.c')
| -rw-r--r-- | ext/teletextdec/gstteletextdec.c | 84 |
1 files changed, 75 insertions, 9 deletions
diff --git a/ext/teletextdec/gstteletextdec.c b/ext/teletextdec/gstteletextdec.c index e33f299cd..3d590eee4 100644 --- a/ext/teletextdec/gstteletextdec.c +++ b/ext/teletextdec/gstteletextdec.c @@ -47,6 +47,8 @@ GST_DEBUG_CATEGORY_STATIC (gst_teletextdec_debug); #define SUBTITLES_PAGE 888 #define MAX_SLICES 32 +#define DEFAULT_FONT_DESCRIPTION "verdana 12" +#define PANGO_TEMPLATE "<span font_desc=\"%s\" foreground=\"%s\"> %s \n</span>" /* Filter signals and args */ enum @@ -60,7 +62,8 @@ enum PROP_PAGENO, PROP_SUBNO, PROP_SUBTITLES_MODE, - PROP_SUBS_TEMPLATE + PROP_SUBS_TEMPLATE, + PROP_FONT_DESCRIPTION }; enum @@ -100,6 +103,23 @@ typedef enum SYSTEM_625 } systems; +/* + * ETS 300 706 Table 30: Colour Map + */ +static const gchar *default_color_map[40] = { + "#000000", "#FF0000", "#00FF00", "#FFFF00", "#0000FF", + "#FF00FF", "#00FFFF", "#FFFFFF", "#000000", "#770000", + "#007700", "#777700", "#000077", "#770077", "#007777", + "#777777", "#FF0055", "#FF7700", "#00FF77", "#FFFFBB", + "#00CCAA", "#550000", "#665522", "#CC7777", "#333333", + "#FF7777", "#77FF77", "#FFFF77", "#7777FF", "#FF77FF", + "#77FFFF", "#DDD0DD", + + /* Private colors */ + "#000000", "#FFAA99", "#44EE00", "#FFDD00", "#FFAA99", + "#FF00FF", "#00FFFF", "#EEEEEE" +}; + static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink", GST_PAD_SINK, GST_PAD_ALWAYS, @@ -216,6 +236,11 @@ gst_teletextdec_class_init (GstTeletextDecClass * klass) g_param_spec_string ("subtitles-template", "Subtitles output template", "Output template used to print each one of the subtitles lines", g_strescape ("%s\n", NULL), G_PARAM_READWRITE)); + + g_object_class_install_property (gobject_class, PROP_FONT_DESCRIPTION, + g_param_spec_string ("font-description", "Pango font description", + "Font description used for the pango output.", + DEFAULT_FONT_DESCRIPTION, G_PARAM_READWRITE)); } /* initialize the new element @@ -246,6 +271,7 @@ gst_teletextdec_init (GstTeletextDec * teletext, GstTeletextDecClass * klass) teletext->subno = -1; teletext->subtitles_mode = FALSE; teletext->subtitles_template = g_strescape ("%s\n", NULL); + teletext->font_description = g_strdup (DEFAULT_FONT_DESCRIPTION); teletext->in_timestamp = GST_CLOCK_TIME_NONE; teletext->in_duration = GST_CLOCK_TIME_NONE; @@ -347,6 +373,9 @@ gst_teletextdec_set_property (GObject * object, guint prop_id, case PROP_SUBS_TEMPLATE: teletext->subtitles_template = g_value_dup_string (value); break; + case PROP_FONT_DESCRIPTION: + teletext->font_description = g_value_dup_string (value); + break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; @@ -372,6 +401,9 @@ gst_teletextdec_get_property (GObject * object, guint prop_id, case PROP_SUBS_TEMPLATE: g_value_set_string (value, teletext->subtitles_template); break; + case PROP_FONT_DESCRIPTION: + g_value_set_string (value, teletext->font_description); + break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; @@ -942,23 +974,57 @@ gst_teletextdec_export_pango_page (GstTeletextDec * teletext, vbi_page * page, GstBuffer ** buf) { vbi_char *acp; - gint colors[page->rows]; - int i, j; + const guint rows = page->rows; + gchar **colors; + gchar **lines; + GString *subs; + GstCaps *caps; + GstFlowReturn ret; + guint start, stop; + guint i, j; + + colors = (gchar **) g_malloc (sizeof (gchar *) * (rows + 1)); + colors[rows] = g_strdup ('\0'); - /* Parse all the lines and approximate it's foreground color from the first + /* parse all the lines and approximate it's foreground color using the first * non null character */ for (acp = page->text, i = 0; i < page->rows; acp += page->columns, i++) { for (j = 0; j < page->columns; j++) { - if (acp[j].unicode != 20) { - color[i] = acp[j].foreground; - continue; + colors[i] = g_strdup (default_color_map[7]); + if (acp[j].unicode != 0x20) { + colors[i] = g_strdup (default_color_map[acp[j].foreground]); + break; } } } + /* get an array of strings with each line of the telext page */ + start = teletext->subtitles_mode ? 1 : 0; + stop = teletext->subtitles_mode ? rows - 2 : rows - 1; + lines = gst_teletextdec_vbi_page_to_text_lines (teletext, start, stop, page); - *buf = gst_buffer_new (); - return GST_FLOW_OK; + /* format each line in pango markup */ + subs = g_string_new (""); + for (i = start; i <= stop; i++) { + g_string_append_printf (subs, PANGO_TEMPLATE, + teletext->font_description, colors[i], lines[i - start]); + } + + /* Allocate new buffer */ + caps = gst_caps_new_simple ("text/x-pango-markup", NULL); + ret = gst_pad_alloc_buffer (teletext->srcpad, GST_BUFFER_OFFSET_NONE, + subs->len + 1, caps, &(*buf)); + if (G_LIKELY (ret == GST_FLOW_OK)) + GST_BUFFER_DATA (*buf) = GST_BUFFER_MALLOCDATA (*buf) = + (guint8 *) subs->str; + else + gst_buffer_unref (*buf); + + g_strfreev (lines); + g_strfreev (colors); + g_string_free (subs, FALSE); + gst_caps_unref (caps); + return ret; } static gboolean |