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🎥 Command line media player
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209/* * This file is part of mpv. * * mpv is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * mpv is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with mpv. If not, see <http://www.gnu.org/licenses/>. */
#include <stddef.h>#include <stdbool.h>#include <inttypes.h>#include <math.h>#include <assert.h>
#include "config.h"#include "mpv_talloc.h"
#include "common/msg.h"#include "options/options.h"#include "common/common.h"#include "common/global.h"
#include "stream/stream.h"#include "sub/dec_sub.h"#include "demux/demux.h"#include "video/mp_image.h"#include "video/decode/dec_video.h"#include "video/filter/vf.h"
#include "core.h"
// 0: primary sub, 1: secondary sub, -1: not selectedstatic int get_order(struct MPContext *mpctx, struct track *track){ for (int n = 0; n < NUM_PTRACKS; n++) { if (mpctx->current_track[n][STREAM_SUB] == track) return n; } return -1;}
static void reset_subtitles(struct MPContext *mpctx, struct track *track){ if (track->d_sub) sub_reset(track->d_sub); term_osd_set_subs(mpctx, NULL);}
void reset_subtitle_state(struct MPContext *mpctx){ for (int n = 0; n < mpctx->num_tracks; n++) { struct dec_sub *d_sub = mpctx->tracks[n]->d_sub; if (d_sub) sub_reset(d_sub); } term_osd_set_subs(mpctx, NULL);}
void uninit_sub(struct MPContext *mpctx, struct track *track){ if (track && track->d_sub) { reset_subtitles(mpctx, track); sub_select(track->d_sub, false); int order = get_order(mpctx, track); osd_set_sub(mpctx->osd, order, NULL); }}
void uninit_sub_all(struct MPContext *mpctx){ for (int n = 0; n < mpctx->num_tracks; n++) uninit_sub(mpctx, mpctx->tracks[n]);}
static bool update_subtitle(struct MPContext *mpctx, double video_pts, struct track *track){ struct MPOpts *opts = mpctx->opts; struct dec_sub *dec_sub = track ? track->d_sub : NULL;
if (!dec_sub || video_pts == MP_NOPTS_VALUE) return true;
if (mpctx->vo_chain) { struct mp_image_params params = mpctx->vo_chain->vf->input_params; if (params.imgfmt) sub_control(dec_sub, SD_CTRL_SET_VIDEO_PARAMS, ¶ms); }
video_pts -= opts->sub_delay;
if (track->demuxer->fully_read && sub_can_preload(dec_sub)) { // Assume fully_read implies no interleaved audio/video streams. // (Reading packets will change the demuxer position.) demux_seek(track->demuxer, 0, 0); sub_preload(dec_sub); }
if (!sub_read_packets(dec_sub, video_pts)) return false;
// Handle displaying subtitles on terminal; never done for secondary subs if (mpctx->current_track[0][STREAM_SUB] == track && !mpctx->video_out) term_osd_set_subs(mpctx, sub_get_text(dec_sub, video_pts));
// Handle displaying subtitles on VO with no video being played. This is // quite differently, because normally subtitles are redrawn on new video // frames, using the video frames' timestamps. if (mpctx->video_out && mpctx->video_status == STATUS_EOF) { if (osd_get_force_video_pts(mpctx->osd) != video_pts) { osd_set_force_video_pts(mpctx->osd, video_pts); osd_query_and_reset_want_redraw(mpctx->osd); vo_redraw(mpctx->video_out); // Force an arbitrary minimum FPS mp_set_timeout(mpctx, 0.1); } }
return true;}
// Return true if the subtitles for the given PTS are ready; false if the player// should wait for new demuxer data, and then should retry.bool update_subtitles(struct MPContext *mpctx, double video_pts){ bool ok = true; for (int n = 0; n < NUM_PTRACKS; n++) ok &= update_subtitle(mpctx, video_pts, mpctx->current_track[n][STREAM_SUB]); return ok;}
static struct attachment_list *get_all_attachments(struct MPContext *mpctx){ struct attachment_list *list = talloc_zero(NULL, struct attachment_list); struct demuxer *prev_demuxer = NULL; for (int n = 0; n < mpctx->num_tracks; n++) { struct track *t = mpctx->tracks[n]; if (!t->demuxer || prev_demuxer == t->demuxer) continue; prev_demuxer = t->demuxer; for (int i = 0; i < t->demuxer->num_attachments; i++) { struct demux_attachment *att = &t->demuxer->attachments[i]; struct demux_attachment copy = { .name = talloc_strdup(list, att->name), .type = talloc_strdup(list, att->type), .data = talloc_memdup(list, att->data, att->data_size), .data_size = att->data_size, }; MP_TARRAY_APPEND(list, list->entries, list->num_entries, copy); } } return list;}
static bool init_subdec(struct MPContext *mpctx, struct track *track){ assert(!track->d_sub);
if (!track->demuxer || !track->stream) return false;
track->d_sub = sub_create(mpctx->global, track->stream, get_all_attachments(mpctx)); if (!track->d_sub) return false;
struct track *vtrack = mpctx->current_track[0][STREAM_VIDEO]; struct mp_codec_params *v_c = vtrack && vtrack->stream ? vtrack->stream->codec : NULL; double fps = v_c ? v_c->fps : 25; sub_control(track->d_sub, SD_CTRL_SET_VIDEO_DEF_FPS, &fps);
return true;}
void reinit_sub(struct MPContext *mpctx, struct track *track){ if (!track || !track->stream || track->stream->type != STREAM_SUB) return;
if (!track->d_sub && !init_subdec(mpctx, track)) { error_on_track(mpctx, track); return; }
sub_select(track->d_sub, true); int order = get_order(mpctx, track); osd_set_sub(mpctx->osd, order, track->d_sub); sub_control(track->d_sub, SD_CTRL_SET_TOP, &(bool){!!order});
if (mpctx->playback_initialized) update_subtitles(mpctx, mpctx->playback_pts);}
void reinit_sub_all(struct MPContext *mpctx){ for (int n = 0; n < NUM_PTRACKS; n++) reinit_sub(mpctx, mpctx->current_track[n][STREAM_SUB]);}