mirror of
https://github.com/mpv-player/mpv
synced 2024-12-22 23:02:37 +00:00
8f2e9f1d61
This also reduces some code duplication with other parts of the code. The changfe is mostly cosmetic, although there are also some subtle changes in behavior. At least one change is that the big desync message is now printed after every seek.
240 lines
7.5 KiB
C
240 lines
7.5 KiB
C
/*
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* This file is part of MPlayer.
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*
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* MPlayer 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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* MPlayer 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 MPlayer; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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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 "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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void uninit_subs(struct demuxer *demuxer)
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{
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for (int i = 0; i < demuxer->num_streams; i++) {
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struct sh_stream *sh = demuxer->streams[i];
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if (sh->sub) {
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sub_destroy(sh->sub->dec_sub);
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sh->sub->dec_sub = NULL;
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}
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}
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}
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// When reading subtitles from a demuxer, and we read video or audio from the
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// demuxer, we should not explicitly read subtitle packets. (With external
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// subs, we have to.)
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static bool is_interleaved(struct MPContext *mpctx, struct track *track)
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{
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if (track->is_external || !track->demuxer)
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return false;
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struct demuxer *demuxer = track->demuxer;
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for (int t = 0; t < mpctx->num_tracks; t++) {
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struct track *other = mpctx->tracks[t];
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if (other != track && other->selected && other->demuxer == demuxer &&
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(other->type == STREAM_VIDEO || other->type == STREAM_AUDIO))
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return true;
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}
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return false;
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}
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void reset_subtitles(struct MPContext *mpctx, int order)
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{
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int obj = order ? OSDTYPE_SUB2 : OSDTYPE_SUB;
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if (mpctx->d_sub[order])
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sub_reset(mpctx->d_sub[order]);
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set_osd_subtitle(mpctx, NULL);
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osd_set_text(mpctx->osd, obj, 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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static void update_subtitle(struct MPContext *mpctx, int order)
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{
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struct MPOpts *opts = mpctx->opts;
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if (order == 0) {
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if (!(mpctx->initialized_flags & INITIALIZED_SUB))
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return;
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} else {
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if (!(mpctx->initialized_flags & INITIALIZED_SUB2))
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return;
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}
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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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assert(track && dec_sub);
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int obj = order ? OSDTYPE_SUB2 : OSDTYPE_SUB;
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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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struct osd_sub_state state;
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osd_get_sub(mpctx->osd, obj, &state);
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state.video_offset =
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track->under_timeline ? mpctx->video_offset : get_start_time(mpctx);
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osd_set_sub(mpctx->osd, obj, &state);
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double refpts_s = mpctx->playback_pts - state.video_offset;
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double curpts_s = refpts_s - opts->sub_delay;
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if (!track->preloaded && track->stream) {
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struct sh_stream *sh_stream = track->stream;
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bool interleaved = is_interleaved(mpctx, track);
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assert(sh_stream->sub->dec_sub == dec_sub);
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while (1) {
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if (interleaved && !demux_has_packet(sh_stream))
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break;
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double subpts_s = demux_get_next_pts(sh_stream);
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if (!demux_has_packet(sh_stream))
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break;
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if (subpts_s > curpts_s) {
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MP_DBG(mpctx, "Sub early: c_pts=%5.3f s_pts=%5.3f\n",
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curpts_s, subpts_s);
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// Libass handled subs can be fed to it in advance
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if (!sub_accept_packets_in_advance(dec_sub))
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break;
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// Try to avoid demuxing whole file at once
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if (subpts_s > curpts_s + 1 && !interleaved)
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break;
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}
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struct demux_packet *pkt = demux_read_packet(sh_stream);
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MP_DBG(mpctx, "Sub: c_pts=%5.3f s_pts=%5.3f duration=%5.3f len=%d\n",
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curpts_s, pkt->pts, pkt->duration, pkt->len);
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sub_decode(dec_sub, pkt);
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talloc_free(pkt);
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}
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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) {
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if (!state.render_bitmap_subs || !mpctx->video_out) {
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sub_lock(dec_sub);
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set_osd_subtitle(mpctx, sub_get_text(dec_sub, curpts_s));
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sub_unlock(dec_sub);
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}
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} else if (order == 1) {
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sub_lock(dec_sub);
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osd_set_text(mpctx->osd, obj, sub_get_text(dec_sub, curpts_s));
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sub_unlock(dec_sub);
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}
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}
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void update_subtitles(struct MPContext *mpctx)
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{
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update_subtitle(mpctx, 0);
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update_subtitle(mpctx, 1);
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}
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static void reinit_subdec(struct MPContext *mpctx, struct track *track,
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struct dec_sub *dec_sub)
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{
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if (sub_is_initialized(dec_sub))
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return;
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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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int w = sh_video ? sh_video->disp_w : 0;
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int h = sh_video ? sh_video->disp_h : 0;
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float fps = sh_video ? sh_video->fps : 25;
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sub_set_video_res(dec_sub, w, h);
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sub_set_video_fps(dec_sub, fps);
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sub_set_ass_renderer(dec_sub, mpctx->ass_library, mpctx->ass_renderer);
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sub_init_from_sh(dec_sub, track->stream);
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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->preloaded && track->is_external) {
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demux_seek(track->demuxer, 0, SEEK_ABSOLUTE);
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track->preloaded = sub_read_all_packets(dec_sub, track->stream);
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}
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}
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void reinit_subs(struct MPContext *mpctx, 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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int obj = order ? OSDTYPE_SUB2 : OSDTYPE_SUB;
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int init_flag = order ? INITIALIZED_SUB2 : INITIALIZED_SUB;
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assert(!(mpctx->initialized_flags & init_flag));
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struct sh_stream *sh = track ? track->stream : NULL;
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if (!sh)
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return;
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if (!sh->sub->dec_sub) {
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assert(!mpctx->d_sub[order]);
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sh->sub->dec_sub = sub_create(mpctx->global);
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}
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assert(!mpctx->d_sub[order] || sh->sub->dec_sub == mpctx->d_sub[order]);
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// The decoder is kept in the stream header in order to make ordered
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// chapters work well.
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mpctx->d_sub[order] = sh->sub->dec_sub;
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mpctx->initialized_flags |= init_flag;
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struct dec_sub *dec_sub = mpctx->d_sub[order];
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assert(dec_sub);
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reinit_subdec(mpctx, track, dec_sub);
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struct osd_sub_state state = {
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.dec_sub = dec_sub,
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// Decides whether to use OSD path or normal subtitle rendering path.
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.render_bitmap_subs = opts->ass_enabled || !sub_has_get_text(dec_sub),
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};
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// Secondary subs are rendered with the "text" renderer to transform them
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// to toptitles.
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if (order == 1 && sub_has_get_text(dec_sub))
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state.render_bitmap_subs = false;
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reset_subtitles(mpctx, order);
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osd_set_sub(mpctx->osd, obj, &state);
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}
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