ASS_Track *mp_ass_default_track(ASS_Library *library, struct MPOpts *opts)
{
ASS_Track *track = ass_new_track(library);
track->track_type = TRACK_TYPE_ASS;
track->Timer = 100.;
track->PlayResY = MP_ASS_FONT_PLAYRESY;
track->WrapStyle = 0;
if (opts->ass_styles_file && opts->ass_style_override)
ass_read_styles(track, opts->ass_styles_file, sub_cp);
if (track->n_styles == 0) {
track->Kerning = true;
int sid = ass_alloc_style(track);
track->default_style = sid;
ASS_Style *style = track->styles + sid;
style->Name = strdup("Default");
style->Alignment = 2;
mp_ass_set_style(style, opts->sub_text_style);
}
if (opts->ass_style_override)
ass_process_force_style(track);
return track;
}
void mp_ass_configure(ASS_Renderer *priv, struct MPOpts *opts,
struct mp_osd_res *dim)
{
ass_set_frame_size(priv, dim->w, dim->h);
ass_set_margins(priv, dim->mt, dim->mb, dim->ml, dim->mr);
int set_use_margins = 0;
#if LIBASS_VERSION >= 0x01010000
int set_sub_pos = 0;
#endif
float set_line_spacing = 0;
float set_font_scale = 1;
int set_hinting = 0;
int set_force_override = 0;
if (opts->ass_style_override) {
set_use_margins = opts->ass_use_margins;
#if LIBASS_VERSION >= 0x01010000
set_sub_pos = 100 - opts->sub_pos;
#endif
set_line_spacing = opts->ass_line_spacing;
set_font_scale = opts->sub_scale;
set_hinting = opts->ass_hinting;
set_force_override = opts->ass_style_override == 3;
}
ass_set_use_margins(priv, set_use_margins);
#if LIBASS_VERSION >= 0x01010000
ass_set_line_position(priv, set_sub_pos);
#endif
#if LIBASS_VERSION >= 0x01000000
ass_set_shaper(priv, opts->ass_shaper);
#endif
#if LIBASS_VERSION >= 0x01103000
ass_set_selective_style_override_enabled(priv, set_force_override);
ASS_Style style = {0};
mp_ass_set_style(&style, 288, opts->sub_text_style);
ass_set_selective_style_override(priv, &style);
free(style.FontName);
#endif
ass_set_font_scale(priv, set_font_scale);
ass_set_hinting(priv, set_hinting);
ass_set_line_spacing(priv, set_line_spacing);
}
// Add default styles, if the track does not have any styles yet.
// Apply style overrides if the user provides any.
static void mp_ass_add_default_styles(ASS_Track *track, struct MPOpts *opts)
{
if (opts->ass_styles_file && opts->ass_style_override)
ass_read_styles(track, opts->ass_styles_file, NULL);
if (track->n_styles == 0) {
if (!track->PlayResY) {
track->PlayResY = MP_ASS_FONT_PLAYRESY;
track->PlayResX = track->PlayResY * 4 / 3;
}
track->Kerning = true;
int sid = ass_alloc_style(track);
track->default_style = sid;
ASS_Style *style = track->styles + sid;
style->Name = strdup("Default");
mp_ass_set_style(style, track->PlayResY, opts->sub_text_style);
}
if (opts->ass_style_override)
ass_process_force_style(track);
}
static void configure_ass(struct sd *sd, struct mp_osd_res *dim,
bool converted, ASS_Track *track)
{
struct MPOpts *opts = sd->opts;
struct sd_ass_priv *ctx = sd->priv;
ASS_Renderer *priv = ctx->ass_renderer;
ass_set_frame_size(priv, dim->w, dim->h);
ass_set_margins(priv, dim->mt, dim->mb, dim->ml, dim->mr);
bool set_use_margins = false;
int set_sub_pos = 0;
float set_line_spacing = 0;
float set_font_scale = 1;
int set_hinting = 0;
bool set_scale_with_window = false;
bool set_scale_by_window = true;
bool total_override = false;
// With forced overrides, apply the --sub-* specific options
if (converted || opts->ass_style_override == 3) {
set_scale_with_window = opts->sub_scale_with_window;
set_use_margins = opts->sub_use_margins;
set_scale_by_window = opts->sub_scale_by_window;
total_override = true;
} else {
set_scale_with_window = opts->ass_scale_with_window;
set_use_margins = opts->ass_use_margins;
}
if (converted || opts->ass_style_override) {
set_sub_pos = 100 - opts->sub_pos;
set_line_spacing = opts->ass_line_spacing;
set_hinting = opts->ass_hinting;
set_font_scale = opts->sub_scale;
}
if (set_scale_with_window) {
int vidh = dim->h - (dim->mt + dim->mb);
set_font_scale *= dim->h / (float)MPMAX(vidh, 1);
}
if (!set_scale_by_window) {
double factor = dim->h / 720.0;
if (factor != 0.0)
set_font_scale /= factor;
}
ass_set_use_margins(priv, set_use_margins);
ass_set_line_position(priv, set_sub_pos);
ass_set_shaper(priv, opts->ass_shaper);
int set_force_flags = 0;
if (total_override)
set_force_flags |= ASS_OVERRIDE_BIT_STYLE | ASS_OVERRIDE_BIT_FONT_SIZE;
if (opts->ass_style_override == 4)
set_force_flags |= ASS_OVERRIDE_BIT_FONT_SIZE;
ass_set_selective_style_override_enabled(priv, set_force_flags);
ASS_Style style = {0};
mp_ass_set_style(&style, 288, opts->sub_text_style);
ass_set_selective_style_override(priv, &style);
free(style.FontName);
if (converted && track->default_style < track->n_styles) {
mp_ass_set_style(track->styles + track->default_style,
track->PlayResY, opts->sub_text_style);
}
ass_set_font_scale(priv, set_font_scale);
ass_set_hinting(priv, set_hinting);
ass_set_line_spacing(priv, set_line_spacing);
}