void update_osd_sub_state(struct MPContext *mpctx, int order,
struct osd_sub_state *out_state)
{
struct MPOpts *opts = mpctx->opts;
struct track *track = mpctx->current_track[order][STREAM_SUB];
struct dec_sub *dec_sub = mpctx->d_sub[order];
int obj = order ? OSDTYPE_SUB2 : OSDTYPE_SUB;
bool textsub = dec_sub && sub_has_get_text(dec_sub);
struct osd_sub_state state = {
.dec_sub = dec_sub,
// Decides whether to use OSD path or normal subtitle rendering path.
.render_bitmap_subs = opts->ass_enabled || !textsub,
.video_offset = get_track_video_offset(mpctx, track),
};
// Secondary subs are rendered with the "text" renderer to transform them
// to toptitles.
if (order == 1 && textsub)
state.render_bitmap_subs = false;
if (!mpctx->current_track[0][STREAM_VIDEO])
state.render_bitmap_subs = false;
osd_set_sub(mpctx->osd, obj, &state);
if (out_state)
*out_state = state;
}
static void update_subtitle(struct MPContext *mpctx, int order)
{
struct MPOpts *opts = mpctx->opts;
struct track *track = mpctx->current_track[order][STREAM_SUB];
struct dec_sub *dec_sub = mpctx->d_sub[order];
if (!track || !dec_sub)
return;
int obj = order ? OSDTYPE_SUB2 : OSDTYPE_SUB;
if (mpctx->d_video) {
struct mp_image_params params = mpctx->d_video->vfilter->override_params;
if (params.imgfmt)
sub_control(dec_sub, SD_CTRL_SET_VIDEO_PARAMS, ¶ms);
}
struct osd_sub_state state;
update_osd_sub_state(mpctx, order, &state);
double refpts_s = mpctx->playback_pts - state.video_offset;
double curpts_s = refpts_s - opts->sub_delay;
if (!track->preloaded && track->stream) {
struct sh_stream *sh_stream = track->stream;
bool interleaved = is_interleaved(mpctx, track);
assert(sh_stream->sub->dec_sub == dec_sub);
while (1) {
if (interleaved && !demux_has_packet(sh_stream))
break;
double subpts_s = demux_get_next_pts(sh_stream);
if (!demux_has_packet(sh_stream))
break;
if (subpts_s > curpts_s) {
MP_DBG(mpctx, "Sub early: c_pts=%5.3f s_pts=%5.3f\n",
curpts_s, subpts_s);
// Libass handled subs can be fed to it in advance
if (!sub_accept_packets_in_advance(dec_sub))
break;
// Try to avoid demuxing whole file at once
if (subpts_s > curpts_s + 1 && !interleaved)
break;
}
struct demux_packet *pkt = demux_read_packet(sh_stream);
MP_DBG(mpctx, "Sub: c_pts=%5.3f s_pts=%5.3f duration=%5.3f len=%d\n",
curpts_s, pkt->pts, pkt->duration, pkt->len);
sub_decode(dec_sub, pkt);
talloc_free(pkt);
}
}
// Handle displaying subtitles on terminal; never done for secondary subs
if (order == 0) {
if (!state.render_bitmap_subs || !mpctx->video_out)
set_osd_subtitle(mpctx, sub_get_text(dec_sub, curpts_s));
} else if (order == 1) {
osd_set_text(mpctx->osd, obj, sub_get_text(dec_sub, curpts_s));
}
}
void update_subtitles(struct MPContext *mpctx)
{
update_subtitle(mpctx, 0);
update_subtitle(mpctx, 1);
}
