Add subdata to ass_track conversion for external subtitles.

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@19407 b3059339-0415-0410-9bf9-f77b7e298cf2

1 files changed, 99 insertions, 0 deletions

diff --git a/libass/ass_mp.c b/libass/ass_mp.c
index f00ecc10b3..4f77dd4d26 100644
--- a/libass/ass_mp.c
+++ b/libass/ass_mp.c
@@ -1,3 +1,7 @@
+#include <stdint.h>
+#include <string.h>
+
+#include "ass.h"
 #include "ass_mp.h"
 
 // libass-related command line options
@@ -8,3 +12,98 @@ int ass_top_margin = 0;
 int ass_bottom_margin = 0;
 int extract_embedded_fonts = 0;
 
+extern int font_fontconfig;
+extern char* font_name;
+extern float text_font_scale_factor;
+extern int subtitle_autoscale;
+
+extern double ass_internal_font_size_coeff; 
+
+/**
+ * \brief Convert subdata to ass_track
+ * \param subdata subtitles struct from subreader
+ * \param fps video framerate
+ * \return newly allocated ass_track, filled with subtitles from subdata
+ */
+ass_track_t* ass_read_subdata(sub_data* subdata, double fps) {
+	ass_track_t* track = ass_new_track();
+	ass_style_t* style;
+	ass_event_t* event;
+	subtitle* sub;
+	int sid, eid;
+	int i;
+	double fs;
+
+	track->track_type = TRACK_TYPE_ASS;
+	track->name = subdata->filename ? strdup(subdata->filename) : 0;
+	track->Timer = 100.;
+	track->PlayResX = 384;
+	track->PlayResY = 288;
+	track->WrapStyle = 0;
+
+	sid = ass_alloc_style(track);
+	style = track->styles + sid;
+	style->Name = strdup("Default");
+	style->FontName = font_fontconfig ? strdup(font_name) : strdup("Tahoma");
+
+	fs = track->PlayResY * text_font_scale_factor / 100. / ass_internal_font_size_coeff;
+	// approximate autoscale coefficients
+	if (subtitle_autoscale == 2)
+		fs *= 1.3;
+	else if (subtitle_autoscale == 3)
+		fs *= 1.4;
+	style->FontSize = fs;
+
+	style->PrimaryColour = 0xC0E9FE00;
+	style->SecondaryColour = 0x1B429E00;
+	style->OutlineColour = 0x1B429E00;
+	style->BackColour = 0x00000000;
+	style->BorderStyle = 1;
+	style->Alignment = 2;
+	style->Outline = 2;
+	style->MarginL = 30;
+	style->MarginR = 30;
+	style->MarginV = 20;
+	style->ScaleX = 1.;
+	style->ScaleY = 1.;
+
+	for (i = 0; i < subdata->sub_num; ++i) {
+		int len = 0, j;
+		char* p;
+		char* end;
+		sub = subdata->subtitles + i;
+		eid = ass_alloc_event(track);
+		event = track->events + eid;
+
+		event->Start = sub->start * 10;
+		event->Duration = (sub->end - sub->start) * 10;
+		if (!subdata->sub_uses_time) {
+			event->Start *= 100. / fps;
+			event->Duration *= 100. / fps;
+		}
+
+		event->Style = sid;
+
+		for (j = 0; j < sub->lines; ++j)
+			len += sub->text[j] ? strlen(sub->text[j]) : 0;
+
+		len += 2 * sub->lines; // '\N', including the one after the last line
+		len += 6; // {\anX}
+		len += 1; // '\0'
+
+		event->Text = malloc(len);
+		end = event->Text + len;
+		p = event->Text;
+
+		if (sub->alignment)
+			p += snprintf(p, end - p, "{\\an%d}", sub->alignment);
+
+		for (j = 0; j < sub->lines; ++j)
+			p += snprintf(p, end - p, "%s ", sub->text[j]);
+
+		p--; // remove last ' '
+		*p = 0;
+	}
+	return track;
+}
+