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c4aa136155
mpv/player/loadfile.c
wm4 4d2ed847ce player: fix removing external tracks at runtime 
This could make the player crash on exit if the "sub_reload" command was
used successfully. the reason was that the mpctx->sources array could
have dangling pointers to the unloaded demuxers.

Also fix a memory leak by actually always freeing the per-stream
subtitle decoders (which are a hack to make ordered chapters behave
better).
2015-04-27 23:21:58 +02:00

1434 lines
46 KiB
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/*
* This file is part of mpv.
*
* mpv is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with mpv. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stddef.h>
#include <stdbool.h>
#include <strings.h>
#include <inttypes.h>
#include <assert.h>
#include <libavutil/avutil.h>
#include "config.h"
#include "talloc.h"
#include "osdep/io.h"
#include "osdep/terminal.h"
#include "osdep/timer.h"
#include "common/msg.h"
#include "common/global.h"
#include "options/path.h"
#include "options/m_config.h"
#include "options/parse_configfile.h"
#include "common/playlist.h"
#include "options/options.h"
#include "options/m_property.h"
#include "common/common.h"
#include "common/encode.h"
#include "input/input.h"
#include "audio/mixer.h"
#include "audio/audio.h"
#include "audio/audio_buffer.h"
#include "audio/decode/dec_audio.h"
#include "audio/out/ao.h"
#include "demux/demux.h"
#include "stream/stream.h"
#include "sub/dec_sub.h"
#include "sub/find_subfiles.h"
#include "video/decode/dec_video.h"
#include "video/out/vo.h"
#include "core.h"
#include "command.h"
#include "libmpv/client.h"
static void uninit_demuxer(struct MPContext *mpctx)
{
assert(!mpctx->d_video && !mpctx->d_audio &&
!mpctx->d_sub[0] && !mpctx->d_sub[1]);
for (int r = 0; r < NUM_PTRACKS; r++) {
for (int t = 0; t < STREAM_TYPE_COUNT; t++)
mpctx->current_track[r][t] = NULL;
}
mpctx->track_layout = NULL;
mpctx->demuxer = NULL;
talloc_free(mpctx->chapters);
mpctx->chapters = NULL;
mpctx->num_chapters = 0;
// per-stream cached subtitle state
for (int i = 0; i < mpctx->num_sources; i++)
uninit_stream_sub_decoders(mpctx->sources[i]);
// close demuxers for external tracks
for (int n = mpctx->num_tracks - 1; n >= 0; n--) {
mpctx->tracks[n]->selected = false;
mp_remove_track(mpctx, mpctx->tracks[n]);
}
for (int i = 0; i < mpctx->num_tracks; i++)
talloc_free(mpctx->tracks[i]);
mpctx->num_tracks = 0;
mpctx->timeline = NULL;
mpctx->num_timeline_parts = 0;
timeline_destroy(mpctx->tl);
mpctx->tl = NULL;
free_demuxer(mpctx->master_demuxer);
mpctx->master_demuxer = NULL;
talloc_free(mpctx->sources);
mpctx->sources = NULL;
mpctx->num_sources = 0;
mpctx->video_offset = 0;
}
static void uninit_stream(struct MPContext *mpctx)
{
free_stream(mpctx->stream);
mpctx->stream = NULL;
}
#define APPEND(s, ...) mp_snprintf_cat(s, sizeof(s), __VA_ARGS__)
static void print_stream(struct MPContext *mpctx, struct track *t)
{
struct sh_stream *s = t->stream;
const char *tname = "?";
const char *selopt = "?";
const char *langopt = "?";
switch (t->type) {
case STREAM_VIDEO:
tname = "Video"; selopt = "vid"; langopt = NULL;
break;
case STREAM_AUDIO:
tname = "Audio"; selopt = "aid"; langopt = "alang";
break;
case STREAM_SUB:
tname = "Subs"; selopt = "sid"; langopt = "slang";
break;
}
char b[2048] = {0};
APPEND(b, " %3s %-5s", t->selected ? "(+)" : "", tname);
APPEND(b, " --%s=%d", selopt, t->user_tid);
if (t->lang && langopt)
APPEND(b, " --%s=%s", langopt, t->lang);
if (t->default_track)
APPEND(b, " (*)");
if (t->attached_picture)
APPEND(b, " [P]");
if (t->title)
APPEND(b, " '%s'", t->title);
const char *codec = s ? s->codec : NULL;
APPEND(b, " (%s)", codec ? codec : "<unknown>");
if (t->is_external)
APPEND(b, " (external)");
MP_INFO(mpctx, "%s\n", b);
}
void update_demuxer_properties(struct MPContext *mpctx)
{
struct demuxer *demuxer = mpctx->master_demuxer;
if (!demuxer)
return;
demux_update(demuxer);
int events = demuxer->events;
if ((events & DEMUX_EVENT_INIT) && demuxer->num_editions > 1) {
for (int n = 0; n < demuxer->num_editions; n++) {
struct demux_edition *edition = &demuxer->editions[n];
char b[128] = {0};
APPEND(b, " %3s --edition=%d",
n == demuxer->edition ? "(+)" : "", n);
char *name = mp_tags_get_str(edition->metadata, "title");
if (name)
APPEND(b, " '%s'", name);
if (edition->default_edition)
APPEND(b, " (*)");
MP_INFO(mpctx, "%s\n", b);
}
}
struct demuxer *tracks = mpctx->track_layout;
if (tracks->events & DEMUX_EVENT_STREAMS) {
add_demuxer_tracks(mpctx, tracks);
for (int t = 0; t < STREAM_TYPE_COUNT; t++) {
for (int n = 0; n < mpctx->num_tracks; n++)
if (mpctx->tracks[n]->type == t)
print_stream(mpctx, mpctx->tracks[n]);
}
tracks->events &= ~DEMUX_EVENT_STREAMS;
}
if (events & DEMUX_EVENT_METADATA) {
struct mp_tags *info =
mp_tags_filtered(mpctx, demuxer->metadata, mpctx->opts->display_tags);
// prev is used to attempt to print changed tags only (to some degree)
struct mp_tags *prev = mpctx->filtered_tags;
int n_prev = 0;
bool had_output = false;
for (int n = 0; n < info->num_keys; n++) {
if (prev && n_prev < prev->num_keys) {
if (strcmp(prev->keys[n_prev], info->keys[n]) == 0) {
n_prev++;
if (strcmp(prev->values[n_prev - 1], info->values[n]) == 0)
continue;
}
}
if (!had_output)
MP_INFO(mpctx, "File tags:\n");
MP_INFO(mpctx, " %s: %s\n", info->keys[n], info->values[n]);
had_output = true;
}
talloc_free(mpctx->filtered_tags);
mpctx->filtered_tags = info;
mp_notify(mpctx, MPV_EVENT_METADATA_UPDATE, NULL);
}
demuxer->events = 0;
}
static bool need_init_seek(struct demuxer *demux)
{
for (int n = 0; n < demux->num_streams; n++) {
struct sh_stream *stream = demux->streams[n];
// Subtitle streams are not properly interleaved -> force init. seek.
if (stream->type != STREAM_SUB && demux_stream_is_selected(stream))
return false;
}
return true;
}
// Enable needed streams, disable others.
// Note that switching all tracks at once (instead when initializing something)
// can be important, because reading from a demuxer stream (e.g. during init)
// will implicitly discard interleaved packets from unselected streams.
// Also initializes position for external streams.
void reselect_demux_streams(struct MPContext *mpctx)
{
// Note: we assume that all demuxer streams are covered by the track list.
for (int t = 0; t < mpctx->num_tracks; t++) {
struct track *track = mpctx->tracks[t];
if (track->demuxer && track->stream) {
bool need_init = track->selected &&
mpctx->demuxer != track->demuxer &&
need_init_seek(track->demuxer);
demuxer_select_track(track->demuxer, track->stream, track->selected);
if (need_init) {
double pts = get_main_demux_pts(mpctx);
if (pts != MP_NOPTS_VALUE)
demux_seek(track->demuxer, pts, SEEK_ABSOLUTE);
}
}
}
}
static struct sh_stream *select_fallback_stream(struct demuxer *d,
enum stream_type type,
int index)
{
struct sh_stream *best_stream = NULL;
for (int n = 0; n < d->num_streams; n++) {
struct sh_stream *s = d->streams[n];
if (s->type == type) {
best_stream = s;
if (index == 0)
break;
index -= 1;
}
}
return best_stream;
}
// Called from the demuxer thread if a new packet is available.
static void wakeup_demux(void *pctx)
{
struct MPContext *mpctx = pctx;
mp_input_wakeup(mpctx->input);
}
static void enable_demux_thread(struct MPContext *mpctx)
{
if (mpctx->demuxer && mpctx->opts->demuxer_thread) {
demux_set_wakeup_cb(mpctx->demuxer, wakeup_demux, mpctx);
demux_start_thread(mpctx->demuxer);
for (int n = 0; n < mpctx->num_tracks; n++) {
struct track *track = mpctx->tracks[n];
if (track->is_external && track->stream && !track->preloaded &&
!track->demuxer->fully_read)
{
demux_set_wakeup_cb(track->demuxer, wakeup_demux, mpctx);
demux_start_thread(track->demuxer);
}
}
}
}
static bool timeline_set_part(struct MPContext *mpctx, int i, bool initial)
{
struct timeline_part *p = mpctx->timeline + mpctx->timeline_part;
struct timeline_part *n = mpctx->timeline + i;
mpctx->timeline_part = i;
mpctx->video_offset = n->start - n->source_start;
if (n->source == p->source && !initial)
return false;
uninit_audio_chain(mpctx);
uninit_video_chain(mpctx);
uninit_sub_all(mpctx);
if (mpctx->ao && !mpctx->opts->gapless_audio) {
ao_drain(mpctx->ao);
uninit_audio_out(mpctx);
}
if (mpctx->demuxer) {
demux_stop_thread(mpctx->demuxer);
demux_flush(mpctx->demuxer);
}
mpctx->demuxer = n->source;
// While another timeline was active, the selection of active tracks might
// have been changed - possibly we need to update this source.
for (int x = 0; x < mpctx->num_tracks; x++) {
struct track *track = mpctx->tracks[x];
if (track->under_timeline) {
track->demuxer = mpctx->demuxer;
track->stream = demuxer_stream_by_demuxer_id(track->demuxer,
track->type,
track->demuxer_id);
// EDL can have mismatched files in the same timeline
if (!track->stream) {
track->stream = select_fallback_stream(track->demuxer,
track->type,
track->user_tid - 1);
}
}
}
if (!initial) {
reselect_demux_streams(mpctx);
enable_demux_thread(mpctx);
}
return true;
}
// Given pts, switch playback to the corresponding part.
// Return offset within that part.
double timeline_set_from_time(struct MPContext *mpctx, double pts, bool *need_reset)
{
if (pts < 0)
pts = 0;
int new = mpctx->num_timeline_parts - 1;
for (int i = 0; i < mpctx->num_timeline_parts; i++) {
if (pts < mpctx->timeline[i + 1].start) {
new = i;
break;
}
}
*need_reset = timeline_set_part(mpctx, new, false);
return pts - mpctx->timeline[new].start + mpctx->timeline[new].source_start;
}
static int find_new_tid(struct MPContext *mpctx, enum stream_type t)
{
int new_id = 0;
for (int i = 0; i < mpctx->num_tracks; i++) {
struct track *track = mpctx->tracks[i];
if (track->type == t)
new_id = MPMAX(new_id, track->user_tid);
}
return new_id + 1;
}
static struct track *add_stream_track(struct MPContext *mpctx,
struct demuxer *demuxer,
struct sh_stream *stream,
bool under_timeline)
{
for (int i = 0; i < mpctx->num_tracks; i++) {
struct track *track = mpctx->tracks[i];
if (track->original_stream == stream)
return track;
}
struct track *track = talloc_ptrtype(NULL, track);
*track = (struct track) {
.type = stream->type,
.user_tid = find_new_tid(mpctx, stream->type),
.demuxer_id = stream->demuxer_id,
.ff_index = stream->ff_index,
.title = stream->title,
.default_track = stream->default_track,
.attached_picture = stream->attached_picture != NULL,
.lang = stream->lang,
.under_timeline = under_timeline,
.demuxer = demuxer,
.stream = stream,
.original_stream = stream,
};
MP_TARRAY_APPEND(mpctx, mpctx->tracks, mpctx->num_tracks, track);
demuxer_select_track(track->demuxer, stream, false);
mp_notify(mpctx, MPV_EVENT_TRACKS_CHANGED, NULL);
return track;
}
void add_demuxer_tracks(struct MPContext *mpctx, struct demuxer *demuxer)
{
for (int n = 0; n < demuxer->num_streams; n++)
add_stream_track(mpctx, demuxer, demuxer->streams[n], !!mpctx->timeline);
}
// Result numerically higher => better match. 0 == no match.
static int match_lang(char **langs, char *lang)
{
for (int idx = 0; langs && langs[idx]; idx++) {
if (lang && strcmp(langs[idx], lang) == 0)
return INT_MAX - idx;
}
return 0;
}
/* Get the track wanted by the user.
* tid is the track ID requested by the user (-2: deselect, -1: default)
* lang is a string list, NULL is same as empty list
* Sort tracks based on the following criteria, and pick the first:
* 0a) track matches ff-index (always wins)
* 0b) track matches tid (almost always wins)
* 1) track is external (no_default cancels this)
* 1b) track was passed explicitly (is not an auto-loaded subtitle)
* 2) earlier match in lang list
* 3) track is marked default
* 4) attached picture, HLS bitrate
* 5) lower track number
* If select_fallback is not set, 5) is only used to determine whether a
* matching track is preferred over another track. Otherwise, always pick a
* track (if nothing else matches, return the track with lowest ID).
*/
// Return whether t1 is preferred over t2
static bool compare_track(struct track *t1, struct track *t2, char **langs,
struct MPOpts *opts)
{
bool ext1 = t1->is_external && !t1->no_default;
bool ext2 = t2->is_external && !t2->no_default;
if (ext1 != ext2)
return ext1;
if (t1->auto_loaded != t2->auto_loaded)
return !t1->auto_loaded;
int l1 = match_lang(langs, t1->lang), l2 = match_lang(langs, t2->lang);
if (l1 != l2)
return l1 > l2;
if (t1->default_track != t2->default_track)
return t1->default_track;
if (t1->attached_picture != t2->attached_picture)
return !t1->attached_picture;
if (t1->stream && t2->stream && opts->hls_bitrate) {
int d = t1->stream->hls_bitrate - t2->stream->hls_bitrate;
if (d)
return opts->hls_bitrate == 1 ? d < 0 : d > 0;
}
return t1->user_tid <= t2->user_tid;
}
struct track *select_track(struct MPContext *mpctx, enum stream_type type,
int tid, int ffid, char **langs)
{
if (ffid != -1)
tid = -1; // prefer selecting ffid
if (tid == -2 || ffid == -2)
return NULL;
bool select_fallback = type == STREAM_VIDEO || type == STREAM_AUDIO;
struct track *pick = NULL;
for (int n = 0; n < mpctx->num_tracks; n++) {
struct track *track = mpctx->tracks[n];
if (track->type != type)
continue;
if (track->user_tid == tid)
return track;
if (track->ff_index == ffid)
return track;
if (!pick || compare_track(track, pick, langs, mpctx->opts))
pick = track;
}
if (pick && !select_fallback && !(pick->is_external && !pick->no_default)
&& !match_lang(langs, pick->lang) && !pick->default_track)
pick = NULL;
if (pick && pick->attached_picture && !mpctx->opts->audio_display)
pick = NULL;
return pick;
}
static char *track_layout_hash(struct MPContext *mpctx)
{
char *h = talloc_strdup(NULL, "");
for (int type = 0; type < STREAM_TYPE_COUNT; type++) {
for (int n = 0; n < mpctx->num_tracks; n++) {
struct track *track = mpctx->tracks[n];
if (track->type != type)
continue;
h = talloc_asprintf_append_buffer(h, "%d-%d-%d-%d-%s\n", type,
track->user_tid, track->default_track, track->is_external,
track->lang ? track->lang : "");
}
}
return h;
}
// Normally, video/audio/sub track selection is persistent across files. This
// code resets track selection if the new file has a different track layout.
static void check_previous_track_selection(struct MPContext *mpctx)
{
struct MPOpts *opts = mpctx->opts;
if (!mpctx->track_layout_hash)
return;
char *h = track_layout_hash(mpctx);
if (strcmp(h, mpctx->track_layout_hash) != 0) {
// Reset selection, but only if they're not "auto" or "off".
if (opts->video_id >= 0)
mpctx->opts->video_id = -1;
if (opts->audio_id >= 0)
mpctx->opts->audio_id = -1;
if (opts->sub_id >= 0)
mpctx->opts->sub_id = -1;
if (opts->sub2_id >= 0)
mpctx->opts->sub2_id = -2;
talloc_free(mpctx->track_layout_hash);
mpctx->track_layout_hash = NULL;
}
talloc_free(h);
}
void mp_switch_track_n(struct MPContext *mpctx, int order, enum stream_type type,
struct track *track)
{
assert(!track || track->type == type);
assert(order >= 0 && order < NUM_PTRACKS);
struct track *current = mpctx->current_track[order][type];
if (track == current)
return;
if (track && track->selected) {
// Track has been selected in a different order parameter.
MP_ERR(mpctx, "Track %d is already selected.\n", track->user_tid);
return;
}
if (order == 0) {
if (type == STREAM_VIDEO) {
uninit_video_chain(mpctx);
if (!track)
handle_force_window(mpctx, false);
} else if (type == STREAM_AUDIO) {
clear_audio_output_buffers(mpctx);
uninit_audio_chain(mpctx);
uninit_audio_out(mpctx);
} else if (type == STREAM_SUB) {
uninit_sub(mpctx, 0);
}
} else if (order == 1) {
if (type == STREAM_SUB)
uninit_sub(mpctx, 1);
}
if (current)
current->selected = false;
if (track && track->demuxer == mpctx->demuxer)
demux_set_enable_refresh_seeks(mpctx->demuxer, true);
reselect_demux_streams(mpctx);
mpctx->current_track[order][type] = track;
if (track)
track->selected = true;
reselect_demux_streams(mpctx);
demux_set_enable_refresh_seeks(mpctx->demuxer, false);
if (type == STREAM_VIDEO && order == 0) {
reinit_video_chain(mpctx);
} else if (type == STREAM_AUDIO && order == 0) {
reinit_audio_chain(mpctx);
} else if (type == STREAM_SUB && order >= 0 && order <= 2) {
reinit_subs(mpctx, order);
}
mp_notify(mpctx, MPV_EVENT_TRACK_SWITCHED, NULL);
osd_changed_all(mpctx->osd);
talloc_free(mpctx->track_layout_hash);
mpctx->track_layout_hash = talloc_steal(mpctx, track_layout_hash(mpctx));
}
void mp_switch_track(struct MPContext *mpctx, enum stream_type type,
struct track *track)
{
mp_switch_track_n(mpctx, 0, type, track);
}
void mp_deselect_track(struct MPContext *mpctx, struct track *track)
{
if (track && track->selected) {
for (int t = 0; t < NUM_PTRACKS; t++)
mp_switch_track_n(mpctx, t, track->type, NULL);
}
}
// Mark the current track selection as explicitly user-requested. (This is
// different from auto-selection or disabling a track due to errors.)
void mp_mark_user_track_selection(struct MPContext *mpctx, int order,
enum stream_type type)
{
struct track *track = mpctx->current_track[order][type];
int user_tid = track ? track->user_tid : -2;
if (type == STREAM_VIDEO && order == 0) {
mpctx->opts->video_id = user_tid;
} else if (type == STREAM_AUDIO && order == 0) {
mpctx->opts->audio_id = user_tid;
} else if (type == STREAM_SUB && order == 0) {
mpctx->opts->sub_id = user_tid;
} else if (type == STREAM_SUB && order == 1) {
mpctx->opts->sub2_id = user_tid;
}
}
struct track *mp_track_by_tid(struct MPContext *mpctx, enum stream_type type,
int tid)
{
if (tid == -1)
return mpctx->current_track[0][type];
for (int n = 0; n < mpctx->num_tracks; n++) {
struct track *track = mpctx->tracks[n];
if (track->type == type && track->user_tid == tid)
return track;
}
return NULL;
}
bool mp_remove_track(struct MPContext *mpctx, struct track *track)
{
if (!track->is_external)
return false;
assert(!track->under_timeline);
mp_deselect_track(mpctx, track);
if (track->selected)
return false;
struct demuxer *d = track->demuxer;
int index = 0;
while (index < mpctx->num_tracks && mpctx->tracks[index] != track)
index++;
MP_TARRAY_REMOVE_AT(mpctx->tracks, mpctx->num_tracks, index);
talloc_free(track);
// Close the demuxer, unless there is still a track using it. These are
// all external tracks, so there are no complications due to the timeline
// mechanism switching the track's demuxer dynamically.
bool in_use = false;
for (int n = mpctx->num_tracks - 1; n >= 0 && !in_use; n--)
in_use |= mpctx->tracks[n]->demuxer == d;
if (!in_use) {
for (int n = 0; n < mpctx->num_sources; n++) {
if (mpctx->sources[n] == d) {
MP_TARRAY_REMOVE_AT(mpctx->sources, mpctx->num_sources, n);
break;
}
}
uninit_stream_sub_decoders(d);
free_demuxer_and_stream(d);
}
mp_notify(mpctx, MPV_EVENT_TRACKS_CHANGED, NULL);
return true;
}
struct track *mp_add_external_file(struct MPContext *mpctx, char *filename,
enum stream_type filter)
{
struct MPOpts *opts = mpctx->opts;
if (!filename)
return NULL;
char *disp_filename = filename;
if (strncmp(disp_filename, "memory://", 9) == 0)
disp_filename = "memory://"; // avoid noise
struct demuxer_params params = {
.expect_subtitle = filter == STREAM_SUB,
};
switch (filter) {
case STREAM_SUB:
params.force_format = opts->sub_demuxer_name;
break;
case STREAM_AUDIO:
params.force_format = opts->audio_demuxer_name;
break;
}
struct demuxer *demuxer =
demux_open_url(filename, &params, mpctx->playback_abort, mpctx->global);
if (!demuxer)
goto err_out;
struct track *first = NULL;
for (int n = 0; n < demuxer->num_streams; n++) {
struct sh_stream *sh = demuxer->streams[n];
if (sh->type == filter) {
struct track *t = add_stream_track(mpctx, demuxer, sh, false);
t->is_external = true;
t->title = talloc_strdup(t, mp_basename(disp_filename));
t->external_filename = talloc_strdup(t, filename);
first = t;
}
}
if (!first) {
free_demuxer_and_stream(demuxer);
MP_WARN(mpctx, "No streams added from file %s.\n", disp_filename);
goto err_out;
}
MP_TARRAY_APPEND(NULL, mpctx->sources, mpctx->num_sources, demuxer);
if (mpctx->playback_initialized)
enable_demux_thread(mpctx);
return first;
err_out:
MP_ERR(mpctx, "Can not open external file %s.\n", disp_filename);
return false;
}
static void open_audiofiles_from_options(struct MPContext *mpctx)
{
struct MPOpts *opts = mpctx->opts;
for (int n = 0; opts->audio_files && opts->audio_files[n]; n++)
mp_add_external_file(mpctx, opts->audio_files[n], STREAM_AUDIO);
}
static void open_subtitles_from_options(struct MPContext *mpctx)
{
struct MPOpts *opts = mpctx->opts;
for (int i = 0; opts->sub_name && opts->sub_name[i] != NULL; i++)
mp_add_external_file(mpctx, opts->sub_name[i], STREAM_SUB);
}
void autoload_external_files(struct MPContext *mpctx)
{
if (mpctx->opts->sub_auto < 0 && mpctx->opts->audiofile_auto < 0)
return;
void *tmp = talloc_new(NULL);
char *base_filename = mpctx->filename;
char *stream_filename = NULL;
if (mpctx->demuxer) {
if (demux_stream_control(mpctx->demuxer, STREAM_CTRL_GET_BASE_FILENAME,
&stream_filename) > 0)
base_filename = talloc_steal(tmp, stream_filename);
}
struct subfn *list = find_external_files(mpctx->global, base_filename);
talloc_steal(tmp, list);
int sc[STREAM_TYPE_COUNT] = {0};
for (int n = 0; n < mpctx->num_tracks; n++) {
if (!mpctx->tracks[n]->attached_picture)
sc[mpctx->tracks[n]->type]++;
}
for (int i = 0; list && list[i].fname; i++) {
char *filename = list[i].fname;
char *lang = list[i].lang;
for (int n = 0; n < mpctx->num_sources; n++) {
if (strcmp(mpctx->sources[n]->stream->url, filename) == 0)
goto skip;
}
if (list[i].type == STREAM_SUB && !sc[STREAM_VIDEO] && !sc[STREAM_AUDIO])
goto skip;
if (list[i].type == STREAM_AUDIO && !sc[STREAM_VIDEO])
goto skip;
struct track *track = mp_add_external_file(mpctx, filename, list[i].type);
if (track) {
track->auto_loaded = true;
if (!track->lang)
track->lang = talloc_strdup(track, lang);
}
skip:;
}
talloc_free(tmp);
}
// Do stuff to a newly loaded playlist. This includes any processing that may
// be required after loading a playlist.
void prepare_playlist(struct MPContext *mpctx, struct playlist *pl)
{
struct MPOpts *opts = mpctx->opts;
if (opts->shuffle)
playlist_shuffle(pl);
if (opts->merge_files)
merge_playlist_files(pl);
pl->current = mp_check_playlist_resume(mpctx, pl);
if (!pl->current)
pl->current = pl->first;
}
// Replace the current playlist entry with playlist contents. Moves the entries
// from the given playlist pl, so the entries don't actually need to be copied.
static void transfer_playlist(struct MPContext *mpctx, struct playlist *pl)
{
if (pl->first) {
prepare_playlist(mpctx, pl);
struct playlist_entry *new = pl->current;
playlist_transfer_entries(mpctx->playlist, pl);
// current entry is replaced
if (mpctx->playlist->current)
playlist_remove(mpctx->playlist, mpctx->playlist->current);
if (new)
mpctx->playlist->current = new;
} else {
MP_WARN(mpctx, "Empty playlist!\n");
}
}
static int process_open_hooks(struct MPContext *mpctx)
{
mp_hook_run(mpctx, NULL, "on_load");
while (!mp_hook_test_completion(mpctx, "on_load")) {
mp_idle(mpctx);
if (mpctx->stop_play) {
// Can't exit immediately, the script would interfere with the
// next file being loaded.
if (mpctx->stop_play == PT_QUIT)
return -1;
}
}
return 0;
}
static void process_unload_hooks(struct MPContext *mpctx)
{
mp_hook_run(mpctx, NULL, "on_unload");
while (!mp_hook_test_completion(mpctx, "on_unload"))
mp_idle(mpctx);
}
static void print_timeline(struct MPContext *mpctx)
{
if (mpctx->timeline) {
int part_count = mpctx->num_timeline_parts;
MP_VERBOSE(mpctx, "Timeline contains %d parts from %d "
"sources. Total length %.3f seconds.\n", part_count,
mpctx->num_sources, mpctx->timeline[part_count].start);
MP_VERBOSE(mpctx, "Source files:\n");
for (int i = 0; i < mpctx->num_sources; i++)
MP_VERBOSE(mpctx, "%d: %s\n", i,
mpctx->sources[i]->filename);
MP_VERBOSE(mpctx, "Timeline parts: (number, start, "
"source_start, source):\n");
for (int i = 0; i < part_count; i++) {
struct timeline_part *p = mpctx->timeline + i;
MP_VERBOSE(mpctx, "%3d %9.3f %9.3f %p/%s\n", i, p->start,
p->source_start, p->source, p->source->filename);
}
MP_VERBOSE(mpctx, "END %9.3f\n",
mpctx->timeline[part_count].start);
}
}
static void load_chapters(struct MPContext *mpctx)
{
struct demuxer *src = mpctx->master_demuxer;
bool free_src = false;
char *chapter_file = mpctx->opts->chapter_file;
if (chapter_file && chapter_file[0]) {
struct stream *stream = stream_create(chapter_file, STREAM_READ,
mpctx->playback_abort, mpctx->global);
if (stream) {
struct demuxer *demux = demux_open(stream, NULL, mpctx->global);
if (demux) {
src = demux;
free_src = true;
}
}
talloc_free(mpctx->chapters);
mpctx->chapters = NULL;
}
if (src && !mpctx->chapters) {
talloc_free(mpctx->chapters);
mpctx->num_chapters = src->num_chapters;
mpctx->chapters = demux_copy_chapter_data(src->chapters, src->num_chapters);
}
if (free_src) {
struct stream *s = src->stream;
free_demuxer(src);
free_stream(s);
}
}
static void load_per_file_options(m_config_t *conf,
struct playlist_param *params,
int params_count)
{
for (int n = 0; n < params_count; n++) {
m_config_set_option_ext(conf, params[n].name, params[n].value,
M_SETOPT_BACKUP);
}
}
struct stream_open_args {
struct mp_cancel *cancel;
struct mpv_global *global; // contains copy of global options
char *filename;
int stream_flags;
struct stream *stream; // result
};
static void open_stream_thread(void *pctx)
{
struct stream_open_args *args = pctx;
args->stream = stream_create(args->filename, args->stream_flags,
args->cancel, args->global);
}
static struct stream *open_stream_reentrant(struct MPContext *mpctx,
char *filename, int stream_flags)
{
struct stream_open_args args = {
.cancel = mpctx->playback_abort,
.global = create_sub_global(mpctx),
.filename = filename,
.stream_flags = stream_flags,
};
mpctx_run_reentrant(mpctx, open_stream_thread, &args);
if (args.stream) {
talloc_steal(args.stream, args.global);
} else {
talloc_free(args.global);
}
return args.stream;
}
struct demux_open_args {
struct stream *stream;
struct mpv_global *global;
struct mp_log *log;
// results
struct demuxer *demux;
struct timeline *tl;
};
static void open_demux_thread(void *pctx)
{
struct demux_open_args *args = pctx;
struct stream *s = args->stream;
struct mpv_global *global = args->global;
struct demuxer_params p = {.force_format = global->opts->demuxer_name};
args->demux = demux_open(s, &p, global);
if (args->demux)
args->tl = timeline_load(global, args->log, args->demux);
}
static void open_demux_reentrant(struct MPContext *mpctx)
{
struct demux_open_args args = {
.global = create_sub_global(mpctx),
.stream = mpctx->stream,
.log = mpctx->log,
};
mpctx_run_reentrant(mpctx, open_demux_thread, &args);
if (args.demux) {
talloc_steal(args.demux, args.global);
mpctx->master_demuxer = args.demux;
mpctx->tl = args.tl;
} else {
talloc_free(args.global);
}
}
static void load_timeline(struct MPContext *mpctx)
{
mpctx->track_layout = mpctx->master_demuxer;
MP_TARRAY_APPEND(NULL, mpctx->sources, mpctx->num_sources,
mpctx->master_demuxer);
if (mpctx->tl) {
mpctx->timeline = mpctx->tl->parts;
mpctx->num_timeline_parts = mpctx->tl->num_parts;
mpctx->num_chapters = mpctx->tl->num_chapters;
mpctx->chapters = demux_copy_chapter_data(mpctx->tl->chapters,
mpctx->tl->num_chapters);
mpctx->track_layout = mpctx->tl->track_layout;
for (int n = 0; n < mpctx->tl->num_sources; n++) {
if (mpctx->tl->sources[n] != mpctx->master_demuxer) {
MP_TARRAY_APPEND(NULL, mpctx->sources, mpctx->num_sources,
mpctx->tl->sources[n]);
}
}
}
print_timeline(mpctx);
}
// Start playing the current playlist entry.
// Handle initialization and deinitialization.
static void play_current_file(struct MPContext *mpctx)
{
struct MPOpts *opts = mpctx->opts;
void *tmp = talloc_new(NULL);
double playback_start = -1e100;
mp_notify(mpctx, MPV_EVENT_START_FILE, NULL);
mp_cancel_reset(mpctx->playback_abort);
mpctx->error_playing = MPV_ERROR_LOADING_FAILED;
mpctx->stop_play = 0;
mpctx->filename = NULL;
mpctx->shown_aframes = 0;
mpctx->shown_vframes = 0;
mpctx->last_vo_pts = MP_NOPTS_VALUE;
mpctx->last_chapter_seek = -2;
mpctx->last_chapter_pts = MP_NOPTS_VALUE;
mpctx->last_chapter = -2;
mpctx->paused = false;
mpctx->paused_for_cache = false;
mpctx->playing_msg_shown = false;
mpctx->backstep_active = false;
mpctx->max_frames = -1;
mpctx->seek = (struct seek_params){ 0 };
reset_playback_state(mpctx);
mpctx->playing = mpctx->playlist->current;
if (!mpctx->playing || !mpctx->playing->filename)
goto terminate_playback;
mpctx->playing->reserved += 1;
mpctx->filename = talloc_strdup(tmp, mpctx->playing->filename);
mpctx->stream_open_filename = mpctx->filename;
mpctx->add_osd_seek_info &= OSD_SEEK_INFO_EDITION | OSD_SEEK_INFO_CURRENT_FILE;
if (opts->reset_options) {
for (int n = 0; opts->reset_options[n]; n++) {
const char *opt = opts->reset_options[n];
if (opt[0]) {
if (strcmp(opt, "all") == 0) {
m_config_backup_all_opts(mpctx->mconfig);
} else {
m_config_backup_opt(mpctx->mconfig, opt);
}
}
}
}
mp_load_auto_profiles(mpctx);
if (opts->position_resume)
mp_load_playback_resume(mpctx, mpctx->filename);
load_per_file_options(mpctx->mconfig, mpctx->playing->params,
mpctx->playing->num_params);
mpctx->max_frames = opts->play_frames;
MP_INFO(mpctx, "Playing: %s\n", mpctx->filename);
assert(mpctx->stream == NULL);
assert(mpctx->demuxer == NULL);
assert(mpctx->d_audio == NULL);
assert(mpctx->d_video == NULL);
assert(mpctx->d_sub[0] == NULL);
assert(mpctx->d_sub[1] == NULL);
if (process_open_hooks(mpctx) < 0)
goto terminate_playback;
int stream_flags = STREAM_READ;
if (!opts->load_unsafe_playlists)
stream_flags |= mpctx->playing->stream_flags;
mpctx->stream = open_stream_reentrant(mpctx, mpctx->stream_open_filename,
stream_flags);
if (!mpctx->stream)
goto terminate_playback;
if (opts->stream_dump && opts->stream_dump[0]) {
stream_dump(mpctx);
mpctx->error_playing = 1;
goto terminate_playback;
}
// Must be called before enabling cache.
mp_nav_init(mpctx);
stream_enable_cache(&mpctx->stream, &opts->stream_cache);
mp_notify(mpctx, MP_EVENT_CHANGE_ALL, NULL);
mp_process_input(mpctx);
if (mpctx->stop_play)
goto terminate_playback;
stream_set_capture_file(mpctx->stream, opts->stream_capture);
goto_reopen_demuxer: ;
mp_nav_reset(mpctx);
open_demux_reentrant(mpctx);
if (!mpctx->master_demuxer) {
MP_ERR(mpctx, "Failed to recognize file format.\n");
mpctx->error_playing = MPV_ERROR_UNKNOWN_FORMAT;
goto terminate_playback;
}
mpctx->demuxer = mpctx->master_demuxer;
load_timeline(mpctx);
if (mpctx->demuxer->playlist) {
struct playlist *pl = mpctx->demuxer->playlist;
int entry_stream_flags = 0;
if (!pl->disable_safety) {
entry_stream_flags = STREAM_SAFE_ONLY;
if (mpctx->demuxer->stream->is_network)
entry_stream_flags |= STREAM_NETWORK_ONLY;
}
for (struct playlist_entry *e = pl->first; e; e = e->next)
e->stream_flags |= entry_stream_flags;
transfer_playlist(mpctx, pl);
mp_notify_property(mpctx, "playlist");
mpctx->error_playing = 1;
goto terminate_playback;
}
load_chapters(mpctx);
add_demuxer_tracks(mpctx, mpctx->track_layout);
mpctx->timeline_part = 0;
if (mpctx->timeline)
timeline_set_part(mpctx, mpctx->timeline_part, true);
open_subtitles_from_options(mpctx);
open_audiofiles_from_options(mpctx);
autoload_external_files(mpctx);
check_previous_track_selection(mpctx);
mpctx->current_track[0][STREAM_VIDEO] =
select_track(mpctx, STREAM_VIDEO, opts->video_id, opts->video_id_ff,
NULL);
mpctx->current_track[0][STREAM_AUDIO] =
select_track(mpctx, STREAM_AUDIO, opts->audio_id, opts->audio_id_ff,
opts->audio_lang);
mpctx->current_track[0][STREAM_SUB] =
select_track(mpctx, STREAM_SUB, opts->sub_id, opts->sub_id_ff,
opts->sub_lang);
mpctx->current_track[1][STREAM_SUB] =
select_track(mpctx, STREAM_SUB, opts->sub2_id, -1, NULL);
for (int t = 0; t < STREAM_TYPE_COUNT; t++) {
for (int i = 0; i < NUM_PTRACKS; i++) {
struct track *track = mpctx->current_track[i][t];
if (track) {
if (track->selected) {
MP_ERR(mpctx, "Track %d can't be selected twice.\n",
track->user_tid);
mpctx->current_track[i][t] = NULL;
} else {
track->selected = true;
}
}
}
}
reselect_demux_streams(mpctx);
update_demuxer_properties(mpctx);
enable_demux_thread(mpctx);
if (mpctx->current_track[0][STREAM_VIDEO] &&
mpctx->current_track[0][STREAM_VIDEO]->attached_picture)
{
MP_INFO(mpctx,
"Displaying attached picture. Use --no-audio-display to prevent this.\n");
}
#if HAVE_ENCODING
if (mpctx->encode_lavc_ctx && mpctx->current_track[0][STREAM_VIDEO])
encode_lavc_expect_stream(mpctx->encode_lavc_ctx, AVMEDIA_TYPE_VIDEO);
if (mpctx->encode_lavc_ctx && mpctx->current_track[0][STREAM_AUDIO])
encode_lavc_expect_stream(mpctx->encode_lavc_ctx, AVMEDIA_TYPE_AUDIO);
if (mpctx->encode_lavc_ctx) {
encode_lavc_set_metadata(mpctx->encode_lavc_ctx,
mpctx->demuxer->metadata);
}
#endif
if (!mpctx->current_track[0][STREAM_VIDEO] &&
!mpctx->current_track[0][STREAM_AUDIO])
{
MP_FATAL(mpctx, "No video or audio streams selected.\n");
struct demuxer *d = mpctx->demuxer;
if (d->stream->uncached_type == STREAMTYPE_DVB) {
int dir = mpctx->last_dvb_step;
if (demux_stream_control(d, STREAM_CTRL_DVB_STEP_CHANNEL, &dir) > 0)
mpctx->stop_play = PT_RELOAD_DEMUXER;
}
mpctx->error_playing = MPV_ERROR_NOTHING_TO_PLAY;
goto terminate_playback;
}
reinit_video_chain(mpctx);
reinit_audio_chain(mpctx);
reinit_subs(mpctx, 0);
reinit_subs(mpctx, 1);
MP_VERBOSE(mpctx, "Starting playback...\n");
if (mpctx->max_frames == 0) {
mpctx->stop_play = PT_NEXT_ENTRY;
mpctx->error_playing = 0;
goto terminate_playback;
}
// If there's a timeline force an absolute seek to initialize state
double startpos = rel_time_to_abs(mpctx, opts->play_start);
if (startpos == MP_NOPTS_VALUE && opts->chapterrange[0] > 0) {
double start = chapter_start_time(mpctx, opts->chapterrange[0] - 1);
if (start != MP_NOPTS_VALUE)
startpos = start;
}
if (startpos == MP_NOPTS_VALUE && mpctx->timeline)
startpos = 0;
if (startpos != MP_NOPTS_VALUE) {
queue_seek(mpctx, MPSEEK_ABSOLUTE, startpos, 0, true);
execute_queued_seek(mpctx);
}
get_relative_time(mpctx); // reset current delta
if (mpctx->opts->pause)
pause_player(mpctx);
mpctx->playback_initialized = true;
mp_notify(mpctx, MPV_EVENT_FILE_LOADED, NULL);
playback_start = mp_time_sec();
mpctx->error_playing = 0;
while (!mpctx->stop_play)
run_playloop(mpctx);
MP_VERBOSE(mpctx, "EOF code: %d \n", mpctx->stop_play);
terminate_playback:
if (mpctx->stop_play == PT_RELOAD_DEMUXER) {
mpctx->stop_play = KEEP_PLAYING;
mpctx->playback_initialized = false;
uninit_audio_chain(mpctx);
uninit_video_chain(mpctx);
uninit_sub_all(mpctx);
uninit_demuxer(mpctx);
goto goto_reopen_demuxer;
}
process_unload_hooks(mpctx);
mp_nav_destroy(mpctx);
if (mpctx->stop_play == KEEP_PLAYING)
mpctx->stop_play = AT_END_OF_FILE;
if (mpctx->stop_play != AT_END_OF_FILE)
clear_audio_output_buffers(mpctx);
if (mpctx->step_frames)
opts->pause = 1;
mp_cancel_trigger(mpctx->playback_abort);
MP_INFO(mpctx, "\n");
// time to uninit all, except global stuff:
uninit_audio_chain(mpctx);
uninit_video_chain(mpctx);
uninit_sub_all(mpctx);
uninit_sub_renderer(mpctx);
uninit_demuxer(mpctx);
uninit_stream(mpctx);
if (!opts->gapless_audio && !mpctx->encode_lavc_ctx)
uninit_audio_out(mpctx);
m_config_restore_backups(mpctx->mconfig);
talloc_free(mpctx->filtered_tags);
mpctx->filtered_tags = NULL;
mpctx->playback_initialized = false;
mp_notify(mpctx, MPV_EVENT_TRACKS_CHANGED, NULL);
bool nothing_played = !mpctx->shown_aframes && !mpctx->shown_vframes &&
mpctx->error_playing <= 0;
struct mpv_event_end_file end_event = {0};
switch (mpctx->stop_play) {
case PT_ERROR:
case AT_END_OF_FILE:
{
if (mpctx->error_playing >= 0 && nothing_played)
mpctx->error_playing = MPV_ERROR_NOTHING_TO_PLAY;
end_event.error = mpctx->error_playing;
if (end_event.error < 0) {
end_event.reason = MPV_END_FILE_REASON_ERROR;
} else {
end_event.reason = MPV_END_FILE_REASON_EOF;
}
if (mpctx->playing) {
// Played/paused for longer than 1 second -> ok
mpctx->playing->playback_short =
playback_start < 0 || mp_time_sec() - playback_start < 1.0;
mpctx->playing->init_failed = nothing_played;
}
break;
}
// Note that error_playing is meaningless in these cases.
case PT_NEXT_ENTRY:
case PT_CURRENT_ENTRY:
case PT_STOP: end_event.reason = MPV_END_FILE_REASON_STOP; break;
case PT_QUIT: end_event.reason = MPV_END_FILE_REASON_QUIT; break;
};
mp_notify(mpctx, MPV_EVENT_END_FILE, &end_event);
if (mpctx->playing)
playlist_entry_unref(mpctx->playing);
mpctx->playing = NULL;
mpctx->filename = NULL;
mpctx->stream_open_filename = NULL;
if (end_event.error < 0 && nothing_played) {
mpctx->files_broken++;
} else if (end_event.error < 0) {
mpctx->files_errored++;
} else {
mpctx->files_played++;
}
talloc_free(tmp);
}
// Determine the next file to play. Note that if this function returns non-NULL,
// it can have side-effects and mutate mpctx.
// direction: -1 (previous) or +1 (next)
// force: if true, don't skip playlist entries marked as failed
struct playlist_entry *mp_next_file(struct MPContext *mpctx, int direction,
bool force)
{
struct playlist_entry *next = playlist_get_next(mpctx->playlist, direction);
if (next && direction < 0 && !force) {
// Don't jump to files that would immediately go to next file anyway
while (next && next->playback_short)
next = next->prev;
// Always allow jumping to first file
if (!next && mpctx->opts->loop_times == 1)
next = mpctx->playlist->first;
}
if (!next && mpctx->opts->loop_times != 1) {
if (direction > 0) {
if (mpctx->opts->shuffle)
playlist_shuffle(mpctx->playlist);
next = mpctx->playlist->first;
if (next && mpctx->opts->loop_times > 1)
mpctx->opts->loop_times--;
} else {
next = mpctx->playlist->last;
// Don't jump to files that would immediately go to next file anyway
while (next && next->playback_short)
next = next->prev;
}
bool ignore_failures = mpctx->opts->loop_times == -2;
if (!force && next && next->init_failed && !ignore_failures) {
// Don't endless loop if no file in playlist is playable
bool all_failed = true;
struct playlist_entry *cur;
for (cur = mpctx->playlist->first; cur; cur = cur->next) {
all_failed &= cur->init_failed;
if (!all_failed)
break;
}
if (all_failed)
next = NULL;
}
}
return next;
}
// Play all entries on the playlist, starting from the current entry.
// Return if all done.
void mp_play_files(struct MPContext *mpctx)
{
for (;;) {
idle_loop(mpctx);
if (mpctx->stop_play == PT_QUIT)
break;
play_current_file(mpctx);
if (mpctx->stop_play == PT_QUIT)
break;
struct playlist_entry *new_entry = mpctx->playlist->current;
if (mpctx->stop_play == PT_NEXT_ENTRY || mpctx->stop_play == PT_ERROR ||
mpctx->stop_play == AT_END_OF_FILE || !mpctx->stop_play)
{
new_entry = mp_next_file(mpctx, +1, false);
}
mpctx->playlist->current = new_entry;
mpctx->playlist->current_was_replaced = false;
mpctx->stop_play = 0;
if (!mpctx->playlist->current && mpctx->opts->player_idle_mode < 2)
break;
}
}
// Abort current playback and set the given entry to play next.
// e must be on the mpctx->playlist.
void mp_set_playlist_entry(struct MPContext *mpctx, struct playlist_entry *e)
{
assert(!e || playlist_entry_to_index(mpctx->playlist, e) >= 0);
mpctx->playlist->current = e;
mpctx->playlist->current_was_replaced = false;
mpctx->stop_play = PT_CURRENT_ENTRY;
}
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