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#include <inttypes.h>
#include <string.h>
#include <stdlib.h>
#include "ass.h"
#include "ass_mp.h"
// libass-related command line options
int ass_enabled = 0;
float ass_font_scale = 1.;
float ass_line_spacing = 0.;
int ass_top_margin = 0;
int ass_bottom_margin = 0;
int extract_embedded_fonts = 0;
char **ass_force_style_list = NULL;
int ass_use_margins = 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;
extern void process_force_style(ass_track_t* track);
/**
* \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 && font_name) ? strdup(font_name) : strdup("Sans");
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 = 0xFFFF0000;
style->SecondaryColour = 0xFFFF0000;
style->OutlineColour = 0x00000000;
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;
}
process_force_style(track);
return track;
}
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