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69dad662c9
mpv/player/loadfile.c
wm4 69dad662c9 player: enable demuxer thread for external audio files 
Enable asynchronous reading for external files. This excludes subtitle
files (so it's effectively enabled for audio files only), because most
subtitle files are fully read on loading, and running a thread for them
would just cause slowdowns and increase resource usage, without having
any advantages.

In theory, an external file could provide multiple tracks from the same
demuxer, but demux_start_thread() is idempotent, so the code can be
kept simple.

Should help with playing DASH with ytdl_hook.
2015-01-10 00:41:45 +01:00

1377 lines
45 KiB
C
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/*
* This file is part of MPlayer.
*
* MPlayer 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.
*
* MPlayer 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 MPlayer; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#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 i = 0; i < mpctx->num_tracks; i++) {
talloc_free(mpctx->tracks[i]);
}
mpctx->num_tracks = 0;
for (int r = 0; r < NUM_PTRACKS; r++) {
for (int t = 0; t < STREAM_TYPE_COUNT; t++)
mpctx->current_track[r][t] = NULL;
}
mpctx->master_demuxer = NULL;
for (int i = 0; i < mpctx->num_sources; i++) {
uninit_stream_sub_decoders(mpctx->sources[i]);
struct demuxer *demuxer = mpctx->sources[i];
struct stream *stream = demuxer->stream;
free_demuxer(demuxer);
if (stream != mpctx->stream)
free_stream(stream);
}
talloc_free(mpctx->sources);
mpctx->sources = NULL;
mpctx->demuxer = NULL;
mpctx->num_sources = 0;
talloc_free(mpctx->timeline);
mpctx->timeline = NULL;
mpctx->num_timeline_parts = 0;
talloc_free(mpctx->chapters);
mpctx->chapters = NULL;
mpctx->num_chapters = 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->stream->type != STREAM_SUB)
{
demux_set_wakeup_cb(track->demuxer, wakeup_demux, mpctx);
demux_start_thread(track->demuxer);
}
}
}
}
bool timeline_set_part(struct MPContext *mpctx, int i, bool force)
{
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 && !force)
return false;
uninit_audio_chain(mpctx);
uninit_video_chain(mpctx);
uninit_sub_all(mpctx);
if (!mpctx->opts->fixed_vo)
uninit_video_out(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);
}
}
}
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;
}
static 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 (!mpctx->opts->fixed_vo || !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;
reselect_demux_streams(mpctx);
mpctx->current_track[order][type] = track;
if (track)
track->selected = true;
reselect_demux_streams(mpctx);
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->under_timeline)
return false;
if (!track->is_external)
return false;
mp_deselect_track(mpctx, track);
if (track->selected)
return false;
int index = 0;
while (index < mpctx->num_tracks && mpctx->tracks[index] != track)
index++;
assert(index < mpctx->num_tracks);
while (index + 1 < mpctx->num_tracks) {
mpctx->tracks[index] = mpctx->tracks[index + 1];
index++;
}
mpctx->num_tracks--;
talloc_free(track);
mp_notify(mpctx, MPV_EVENT_TRACKS_CHANGED, NULL);
return true;
}
static void open_subtitles_from_options(struct MPContext *mpctx)
{
if (mpctx->opts->sub_name) {
for (int i = 0; mpctx->opts->sub_name[i] != NULL; ++i)
mp_add_subtitles(mpctx, mpctx->opts->sub_name[i]);
}
if (mpctx->opts->sub_auto >= 0) { // auto load sub file ...
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_text_subtitles(mpctx->global, base_filename);
talloc_steal(tmp, list);
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;
}
struct track *track = mp_add_subtitles(mpctx, filename);
if (track) {
track->auto_loaded = true;
if (!track->lang)
track->lang = talloc_strdup(track, lang);
}
skip:;
}
talloc_free(tmp);
}
}
static struct track *open_external_file(struct MPContext *mpctx, char *filename,
char *demuxer_name,
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 stream *stream = stream_open(filename, mpctx->global);
if (!stream)
goto err_out;
if (filter != STREAM_SUB)
stream_enable_cache(&stream, &opts->stream_cache);
struct demuxer_params params = {
.expect_subtitle = filter == STREAM_SUB,
};
struct demuxer *demuxer =
demux_open(stream, demuxer_name, &params, mpctx->global);
if (!demuxer) {
free_stream(stream);
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(demuxer);
free_stream(stream);
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);
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++) {
open_external_file(mpctx, opts->audio_files[n], opts->audio_demuxer_name,
STREAM_AUDIO);
}
}
struct track *mp_add_subtitles(struct MPContext *mpctx, char *filename)
{
struct MPOpts *opts = mpctx->opts;
return open_external_file(mpctx, filename, opts->sub_demuxer_name,
STREAM_SUB);
}
// 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 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, 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_async(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_non_blocking(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 demuxer *demux; // result
};
static void open_demux_thread(void *pctx)
{
struct demux_open_args *args = pctx;
struct stream *s = args->stream;
struct mpv_global *global = args->global;
args->demux = demux_open(s, global->opts->demuxer_name, NULL, global);
}
static struct demuxer *open_demux_async(struct MPContext *mpctx,
struct stream *stream)
{
struct demux_open_args args = {stream, create_sub_global(mpctx)};
mpctx_run_non_blocking(mpctx, open_demux_thread, &args);
if (args.demux) {
talloc_steal(args.demux, args.global);
} else {
talloc_free(args.global);
}
return args.demux;
}
// 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->audio_delay = 0;
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->audio_delay = opts->audio_delay;
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_async(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_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);
mpctx->demuxer = open_demux_async(mpctx, mpctx->stream);
if (!mpctx->demuxer) {
MP_ERR(mpctx, "Failed to recognize file format.\n");
mpctx->error_playing = MPV_ERROR_UNKNOWN_FORMAT;
goto terminate_playback;
}
mpctx->master_demuxer = mpctx->demuxer;
MP_TARRAY_APPEND(NULL, mpctx->sources, mpctx->num_sources, mpctx->demuxer);
if (mpctx->demuxer->playlist) {
int entry_stream_flags =
(mpctx->demuxer->stream->safe_origin ? 0 : STREAM_SAFE_ONLY) |
(mpctx->demuxer->stream->is_network ? STREAM_NETWORK_ONLY : 0);
struct playlist *pl = mpctx->demuxer->playlist;
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;
}
if (mpctx->demuxer->matroska_data.ordered_chapters)
build_ordered_chapter_timeline(mpctx);
if (mpctx->demuxer->type == DEMUXER_TYPE_EDL)
build_mpv_edl_timeline(mpctx);
if (mpctx->demuxer->type == DEMUXER_TYPE_CUE)
build_cue_timeline(mpctx);
print_timeline(mpctx);
load_chapters(mpctx);
mpctx->track_layout = mpctx->demuxer;
if (mpctx->timeline) {
// With Matroska, the "master" file usually dictates track layout etc.
// On the contrary, the EDL and CUE demuxers are empty wrappers, as
// well as Matroska ordered chapter playlist-like files.
mpctx->track_layout = mpctx->timeline[0].source;
for (int n = 0; n < mpctx->num_timeline_parts; n++) {
if (mpctx->timeline[n].source == mpctx->demuxer) {
mpctx->track_layout = mpctx->demuxer;
break;
}
}
}
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);
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
reinit_video_chain(mpctx);
reinit_audio_chain(mpctx);
reinit_subs(mpctx, 0);
reinit_subs(mpctx, 1);
//==================== START PLAYING =======================
if (!mpctx->d_video && !mpctx->d_audio) {
struct demuxer *d = mpctx->demuxer;
MP_FATAL(mpctx, "No video or audio streams selected.\n");
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;
}
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;
}
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->fixed_vo)
uninit_video_out(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 < 0)
next = mpctx->playlist->first;
}
if (!next && mpctx->opts->loop_times >= 0) {
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--;
if (mpctx->opts->loop_times == 1)
mpctx->opts->loop_times = -1;
}
} 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;
}
if (!force && next && next->init_failed) {
// 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(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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