From 0e7fc97cfaaecf1b7fc93a73157a6a380e9058f4 Mon Sep 17 00:00:00 2001
From: Andreas Frisch <andreas.frisch@multimedia-labs.de>
Date: Mon, 20 Oct 2008 11:52:18 +0000
Subject: [PATCH] hide subtitles after actual duration timeout, unescape
 entities and simulate bold and italic

---
 lib/gui/esubtitle.cpp      | 80 ++++++++++++++++++++++++++++++++++++++
 lib/gui/esubtitle.h        | 27 +++++++++++++
 lib/service/servicemp3.cpp |  6 ++-
 3 files changed, 111 insertions(+), 2 deletions(-)

diff --git a/lib/gui/esubtitle.cpp b/lib/gui/esubtitle.cpp
index 80211b4d..f859c170 100644
--- a/lib/gui/esubtitle.cpp
+++ b/lib/gui/esubtitle.cpp
@@ -66,11 +66,43 @@ void eSubtitleWidget::setPage(const eDVBSubtitlePage &p)
 	invalidate(m_visible_region);  // invalidate new regions
 }
 
+void eSubtitleWidget::setPage(const ePangoSubtitlePage &p)
+{
+	m_pango_page = p;
+	m_pango_page_ok = 1;
+	invalidate(m_visible_region);  // invalidate old visible regions
+	m_visible_region.rects.clear();
+
+	int elements = m_pango_page.m_elements.size();
+	if (elements)
+	{
+		int startY = elements > 1
+			? size().height() / 2
+			: size().height() / 3 * 2;
+		int width = size().width() - startX * 2;
+		int height = size().height() - startY;
+		int size_per_element = height / (elements ? elements : 1);
+		for (int i=0; i<elements; ++i)
+		{
+			eRect &area = m_pango_page.m_elements[i].m_area;
+			area.setLeft(startX);
+			area.setTop(size_per_element * i + startY);
+			area.setWidth(width);
+			area.setHeight(size_per_element);
+			m_visible_region.rects.push_back(area);
+		}
+	}
+	int timeout_ms = m_pango_page.m_timeout;
+	m_hide_subtitles_timer.start(timeout_ms, true);
+	invalidate(m_visible_region);  // invalidate new regions
+}
+
 void eSubtitleWidget::clearPage()
 {
 	eDebug("subtitle timeout... hide");
 	m_page_ok = 0;
 	m_dvb_page_ok = 0;
+	m_pango_page_ok = 0;
 	invalidate(m_visible_region);
 	m_visible_region.rects.clear();
 }
@@ -81,6 +113,15 @@ void eSubtitleWidget::setPixmap(ePtr<gPixmap> &pixmap, gRegion changed)
 	invalidate(changed);
 }
 
+std::string eSubtitleWidget::replace_all(const std::string &in, const std::string &entity, const std::string &symbol)
+{
+	std::string out = in;
+	std::string::size_type loc = 0;
+	while (( loc = out.find(entity, loc)) != std::string::npos )
+	out.replace(loc, entity.length(), symbol);
+	return out;
+}
+
 int eSubtitleWidget::event(int event, void *data, void *data2)
 {
 	switch (event)
@@ -112,6 +153,45 @@ int eSubtitleWidget::event(int event, void *data, void *data2)
 				painter.renderText(area, element.m_text, gPainter::RT_WRAP|gPainter::RT_VALIGN_CENTER|gPainter::RT_HALIGN_CENTER);
 			}
 		}
+		else if (m_pango_page_ok)
+		{
+			int elements = m_pango_page.m_elements.size();
+			ePtr<gFont> font = new gFont("Regular", 38);
+			for (int i=0; i<elements; ++i)
+			{
+				ePangoSubtitlePageElement &element = m_pango_page.m_elements[i];
+				std::string text = element.m_pango_line;				
+				std::string::size_type loc = text.find("<", 0 );
+				if ( loc != std::string::npos )
+				{
+					switch (char(text.at(1)))
+					{
+					case 'i':
+						eDebug("found italic");
+						font = new gFont("LCD", 40);
+						break;
+					case 'b':
+						eDebug("found bold");
+						font = new gFont("Replacement", 40);
+						break;
+					default:
+						break;
+					}
+					text = text.substr(3, text.length()-7);
+				}
+				text = replace_all(text, "&apos;", "'");
+				text = replace_all(text, "&quot;", "\"");
+				text = replace_all(text, "&amp;", "&");
+				painter.setFont(font);		
+				eRect &area = element.m_area;
+				eRect shadow = area;
+				shadow.moveBy(3,3);
+				painter.setForegroundColor(gRGB(0,0,0));
+				painter.renderText(shadow, text, gPainter::RT_WRAP|gPainter::RT_VALIGN_CENTER|gPainter::RT_HALIGN_CENTER);
+				painter.setForegroundColor(element.m_color);
+				painter.renderText(area, text, gPainter::RT_WRAP|gPainter::RT_VALIGN_CENTER|gPainter::RT_HALIGN_CENTER);
+			}
+		}
 		else if (m_dvb_page_ok)
 		{
 			for (std::list<eDVBSubtitleRegion>::iterator it(m_dvb_page.m_regions.begin()); it != m_dvb_page.m_regions.end(); ++it)
diff --git a/lib/gui/esubtitle.h b/lib/gui/esubtitle.h
index 15542773..b81faf79 100644
--- a/lib/gui/esubtitle.h
+++ b/lib/gui/esubtitle.h
@@ -5,7 +5,29 @@
 #include <lib/dvb/teletext.h>
 #include <lib/dvb/subtitle.h>
 
+struct ePangoSubtitlePageElement
+{
+	gRGB m_color;
+	std::string m_pango_line;
+	eRect m_area;
+	ePangoSubtitlePageElement(const gRGB &color, const std::string &text)
+		: m_color(color), m_pango_line(text)
+	{
+	}
+};
+
+struct ePangoSubtitlePage
+{
+	pts_t m_pts;
+	int m_have_pts;
+	int m_timeout; /* in milliseconds */
+	std::vector<ePangoSubtitlePageElement> m_elements;
+	void clear() { m_elements.clear(); }
+};
+
 class eDVBTeletextSubtitlePage;
+class eDVBPangoSubtitlePage;
+class ePangoSubtitlePage;
 
 class eSubtitleWidget: public eWidget, public Object
 {
@@ -14,6 +36,7 @@ public:
 	
 	void setPage(const eDVBTeletextSubtitlePage &p);
 	void setPage(const eDVBSubtitlePage &p);
+	void setPage(const ePangoSubtitlePage &p);
 	void clearPage();
 
 	void setPixmap(ePtr<gPixmap> &pixmap, gRegion changed);
@@ -27,11 +50,15 @@ private:
 	int m_dvb_page_ok;
 	eDVBSubtitlePage m_dvb_page;
 
+	int m_pango_page_ok;
+	ePangoSubtitlePage m_pango_page;
+
 	eTimer m_hide_subtitles_timer;
 
 	gRegion m_visible_region;
 
 	ePtr<gPixmap> m_pixmap;  // pixmap to paint on next evtPaint
+	std::string eSubtitleWidget::replace_all(const std::string &in, const std::string &entity, const std::string &symbol);
 };
 
 #endif
diff --git a/lib/service/servicemp3.cpp b/lib/service/servicemp3.cpp
index 225d90f6..be3536b6 100644
--- a/lib/service/servicemp3.cpp
+++ b/lib/service/servicemp3.cpp
@@ -1168,14 +1168,16 @@ eAutoInitPtr<eServiceFactoryMP3> init_eServiceFactoryMP3(eAutoInitNumbers::servi
 
 void eServiceMP3::gstCBsubtitleAvail(GstElement *element, GstBuffer *buffer, GstPad *pad, gpointer user_data)
 {
+	gint64 duration_ns = GST_BUFFER_DURATION(buffer);
 	const unsigned char *text = (unsigned char *)GST_BUFFER_DATA(buffer);
 	eDebug("gstCBsubtitleAvail: %s",text);
 	eServiceMP3 *_this = (eServiceMP3*)user_data;
 	if ( _this->m_subtitle_widget )
 	{
-		eDVBTeletextSubtitlePage page;
+		ePangoSubtitlePage page;
 		gRGB rgbcol(0xD0,0xD0,0xD0);
-		page.m_elements.push_back(eDVBTeletextSubtitlePageElement(rgbcol, (const char*)text));
+		page.m_elements.push_back(ePangoSubtitlePageElement(rgbcol, (const char*)text));
+		page.m_timeout = duration_ns / 1000000;
 		(_this->m_subtitle_widget)->setPage(page);
 	}
 }
-- 
2.30.2