mirror of https://github.com/mpv-player/mpv
158 lines
4.4 KiB
C
158 lines
4.4 KiB
C
/*
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* This file is part of mpv.
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*
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* mpv is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* mpv is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with mpv. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stddef.h>
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#include <stdbool.h>
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#include <inttypes.h>
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#include <math.h>
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#include <assert.h>
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#include "config.h"
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#include "talloc.h"
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#include "common/msg.h"
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#include "options/options.h"
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#include "common/common.h"
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#include "common/global.h"
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#include "stream/stream.h"
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#include "sub/dec_sub.h"
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#include "demux/demux.h"
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#include "video/mp_image.h"
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#include "video/decode/dec_video.h"
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#include "video/filter/vf.h"
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#include "core.h"
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static void reset_subtitles(struct MPContext *mpctx, int order)
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{
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if (mpctx->d_sub[order])
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sub_reset(mpctx->d_sub[order]);
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term_osd_set_subs(mpctx, NULL);
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}
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void reset_subtitle_state(struct MPContext *mpctx)
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{
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reset_subtitles(mpctx, 0);
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reset_subtitles(mpctx, 1);
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}
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void uninit_sub(struct MPContext *mpctx, int order)
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{
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if (mpctx->d_sub[order]) {
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reset_subtitles(mpctx, order);
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sub_select(mpctx->d_sub[order], false);
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mpctx->d_sub[order] = NULL; // not destroyed
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osd_set_sub(mpctx->osd, OSDTYPE_SUB + order, NULL);
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reselect_demux_streams(mpctx);
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}
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}
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void uninit_sub_all(struct MPContext *mpctx)
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{
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uninit_sub(mpctx, 0);
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uninit_sub(mpctx, 1);
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}
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static bool update_subtitle(struct MPContext *mpctx, double video_pts, int order)
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{
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struct MPOpts *opts = mpctx->opts;
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struct track *track = mpctx->current_track[order][STREAM_SUB];
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struct dec_sub *dec_sub = mpctx->d_sub[order];
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if (!track || !dec_sub || video_pts == MP_NOPTS_VALUE)
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return true;
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if (mpctx->d_video) {
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struct mp_image_params params = mpctx->d_video->vfilter->override_params;
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if (params.imgfmt)
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sub_control(dec_sub, SD_CTRL_SET_VIDEO_PARAMS, ¶ms);
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}
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video_pts -= opts->sub_delay;
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if (!track->preloaded) {
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if (!sub_read_packets(dec_sub, video_pts))
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return false;
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}
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// Handle displaying subtitles on terminal; never done for secondary subs
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if (order == 0 && !mpctx->video_out)
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term_osd_set_subs(mpctx, sub_get_text(dec_sub, video_pts));
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return true;
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}
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// Return true if the subtitles for the given PTS are ready; false if the player
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// should wait for new demuxer data, and then should retry.
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bool update_subtitles(struct MPContext *mpctx, double video_pts)
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{
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return update_subtitle(mpctx, video_pts, 0) &
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update_subtitle(mpctx, video_pts, 1);
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}
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static bool init_subdec(struct MPContext *mpctx, struct track *track)
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{
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struct MPOpts *opts = mpctx->opts;
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assert(!track->dec_sub);
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if (!track->demuxer || !track->stream)
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return false;
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track->dec_sub = sub_create(mpctx->global, track->demuxer, track->stream);
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if (!track->dec_sub)
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return false;
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struct sh_video *sh_video =
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mpctx->d_video ? mpctx->d_video->header->video : NULL;
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double fps = sh_video ? sh_video->fps : 25;
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sub_control(track->dec_sub, SD_CTRL_SET_VIDEO_DEF_FPS, &fps);
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// Don't do this if the file has video/audio streams. Don't do it even
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// if it has only sub streams, because reading packets will change the
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// demuxer position.
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if (track->is_external && !opts->sub_clear_on_seek) {
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demux_seek(track->demuxer, 0, SEEK_ABSOLUTE);
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track->preloaded = sub_read_all_packets(track->dec_sub);
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if (track->preloaded)
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demux_stop_thread(track->demuxer);
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}
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return true;
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}
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void reinit_subs(struct MPContext *mpctx, int order)
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{
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assert(!mpctx->d_sub[order]);
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struct track *track = mpctx->current_track[order][STREAM_SUB];
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if (!track)
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return;
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if (!track->dec_sub && !init_subdec(mpctx, track)) {
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error_on_track(mpctx, track);
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return;
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}
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sub_select(track->dec_sub, true);
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osd_set_sub(mpctx->osd, OSDTYPE_SUB + order, track->dec_sub);
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sub_control(track->dec_sub, SD_CTRL_SET_TOP, &(bool){!!order});
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mpctx->d_sub[order] = track->dec_sub;
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}
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