mirror of
https://github.com/mpv-player/mpv
synced 2024-09-09 01:16:56 +02:00
1785 lines
58 KiB
C
1785 lines
58 KiB
C
/*
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* This file is part of mpv.
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*
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* mpv is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* mpv is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with mpv. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <assert.h>
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#include <unistd.h>
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#include <limits.h>
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#include <pthread.h>
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#include <math.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include "config.h"
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#include "options/m_config.h"
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#include "options/m_option.h"
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#include "mpv_talloc.h"
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#include "common/msg.h"
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#include "common/global.h"
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#include "osdep/threads.h"
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#include "stream/stream.h"
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#include "demux.h"
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#include "timeline.h"
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#include "stheader.h"
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#include "cue.h"
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// Demuxer list
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extern const struct demuxer_desc demuxer_desc_edl;
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extern const struct demuxer_desc demuxer_desc_cue;
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extern const demuxer_desc_t demuxer_desc_rawaudio;
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extern const demuxer_desc_t demuxer_desc_rawvideo;
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extern const demuxer_desc_t demuxer_desc_tv;
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extern const demuxer_desc_t demuxer_desc_mf;
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extern const demuxer_desc_t demuxer_desc_matroska;
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extern const demuxer_desc_t demuxer_desc_lavf;
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extern const demuxer_desc_t demuxer_desc_playlist;
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extern const demuxer_desc_t demuxer_desc_disc;
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extern const demuxer_desc_t demuxer_desc_rar;
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extern const demuxer_desc_t demuxer_desc_libarchive;
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extern const demuxer_desc_t demuxer_desc_null;
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extern const demuxer_desc_t demuxer_desc_timeline;
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/* Please do not add any new demuxers here. If you want to implement a new
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* demuxer, add it to libavformat, except for wrappers around external
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* libraries and demuxers requiring binary support. */
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const demuxer_desc_t *const demuxer_list[] = {
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&demuxer_desc_disc,
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&demuxer_desc_edl,
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&demuxer_desc_cue,
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&demuxer_desc_rawaudio,
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&demuxer_desc_rawvideo,
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#if HAVE_TV
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&demuxer_desc_tv,
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#endif
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&demuxer_desc_matroska,
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#if HAVE_LIBARCHIVE
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&demuxer_desc_libarchive,
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#endif
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&demuxer_desc_rar,
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&demuxer_desc_lavf,
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&demuxer_desc_mf,
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&demuxer_desc_playlist,
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&demuxer_desc_null,
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NULL
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};
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struct demux_opts {
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int max_packs;
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int max_bytes;
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double min_secs;
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int force_seekable;
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double min_secs_cache;
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int access_references;
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};
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#define OPT_BASE_STRUCT struct demux_opts
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const struct m_sub_options demux_conf = {
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.opts = (const struct m_option[]){
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OPT_DOUBLE("demuxer-readahead-secs", min_secs, M_OPT_MIN, .min = 0),
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OPT_INTRANGE("demuxer-max-packets", max_packs, 0, 0, INT_MAX),
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OPT_INTRANGE("demuxer-max-bytes", max_bytes, 0, 0, INT_MAX),
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OPT_FLAG("force-seekable", force_seekable, 0),
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OPT_DOUBLE("cache-secs", min_secs_cache, M_OPT_MIN, .min = 0),
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OPT_FLAG("access-references", access_references, 0),
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{0}
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},
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.size = sizeof(struct demux_opts),
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.defaults = &(const struct demux_opts){
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.max_packs = 16000,
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.max_bytes = 400 * 1024 * 1024,
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.min_secs = 1.0,
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.min_secs_cache = 10.0,
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.access_references = 1,
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},
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};
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struct demux_internal {
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struct mp_log *log;
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// The demuxer runs potentially in another thread, so we keep two demuxer
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// structs; the real demuxer can access the shadow struct only.
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// Since demuxer and user threads both don't use locks, a third demuxer
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// struct d_buffer is used to copy data between them in a synchronized way.
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struct demuxer *d_thread; // accessed by demuxer impl. (producer)
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struct demuxer *d_user; // accessed by player (consumer)
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struct demuxer *d_buffer; // protected by lock; used to sync d_user/thread
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// The lock protects the packet queues (struct demux_stream), d_buffer,
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// and the fields below.
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pthread_mutex_t lock;
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pthread_cond_t wakeup;
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pthread_t thread;
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// -- All the following fields are protected by lock.
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bool thread_terminate;
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bool threading;
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void (*wakeup_cb)(void *ctx);
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void *wakeup_cb_ctx;
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struct sh_stream **streams;
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int num_streams;
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int events;
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bool warned_queue_overflow;
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bool last_eof; // last actual global EOF status
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bool eof; // whether we're in EOF state (reset for retry)
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bool idle;
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bool autoselect;
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double min_secs;
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int max_packs;
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int max_bytes;
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// Set if we know that we are at the start of the file. This is used to
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// avoid a redundant initial seek after enabling streams. We could just
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// allow it, but to avoid buggy seeking affecting normal playback, we don't.
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bool initial_state;
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bool tracks_switched; // thread needs to inform demuxer of this
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bool seeking; // there's a seek queued
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int seek_flags; // flags for next seek (if seeking==true)
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double seek_pts;
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double ref_pts; // assumed player position (only for track switches)
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double ts_offset; // timestamp offset to apply to everything
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void (*run_fn)(void *); // if non-NULL, function queued to be run on
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void *run_fn_arg; // the thread as run_fn(run_fn_arg)
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// Cached state.
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bool force_cache_update;
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double time_length;
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struct mp_tags *stream_metadata;
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struct stream_cache_info stream_cache_info;
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int64_t stream_size;
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// Updated during init only.
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char *stream_base_filename;
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};
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struct demux_stream {
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struct demux_internal *in;
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enum stream_type type;
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// all fields are protected by in->lock
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bool selected; // user wants packets from this stream
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bool active; // try to keep at least 1 packet queued
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// if false, this stream is disabled, or passively
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// read (like subtitles)
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bool eof; // end of demuxed stream? (true if all buffer empty)
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bool need_refresh; // enabled mid-stream
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bool refreshing;
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bool correct_dts; // packet DTS is strictly monotonically increasing
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bool correct_pos; // packet pos is strictly monotonically increasing
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size_t packs; // number of packets in buffer
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size_t bytes; // total bytes of packets in buffer
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double base_ts; // timestamp of the last packet returned to decoder
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double last_ts; // timestamp of the last packet added to queue
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double last_br_ts; // timestamp of last packet bitrate was calculated
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size_t last_br_bytes; // summed packet sizes since last bitrate calculation
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double bitrate;
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int64_t last_pos;
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double last_dts;
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struct demux_packet *head;
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struct demux_packet *tail;
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// for closed captions (demuxer_feed_caption)
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struct sh_stream *cc;
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};
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// Return "a", or if that is NOPTS, return "def".
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#define PTS_OR_DEF(a, def) ((a) == MP_NOPTS_VALUE ? (def) : (a))
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// If one of the values is NOPTS, always pick the other one.
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#define MP_PTS_MIN(a, b) MPMIN(PTS_OR_DEF(a, b), PTS_OR_DEF(b, a))
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#define MP_PTS_MAX(a, b) MPMAX(PTS_OR_DEF(a, b), PTS_OR_DEF(b, a))
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#define MP_ADD_PTS(a, b) ((a) == MP_NOPTS_VALUE ? (a) : ((a) + (b)))
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static void demuxer_sort_chapters(demuxer_t *demuxer);
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static void *demux_thread(void *pctx);
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static void update_cache(struct demux_internal *in);
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// called locked
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static void ds_flush(struct demux_stream *ds)
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{
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demux_packet_t *dp = ds->head;
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while (dp) {
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demux_packet_t *dn = dp->next;
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free_demux_packet(dp);
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dp = dn;
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}
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ds->head = ds->tail = NULL;
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ds->packs = 0;
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ds->bytes = 0;
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ds->last_ts = ds->base_ts = ds->last_br_ts = MP_NOPTS_VALUE;
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ds->last_br_bytes = 0;
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ds->bitrate = -1;
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ds->eof = false;
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ds->active = false;
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ds->refreshing = false;
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ds->need_refresh = false;
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ds->last_pos = -1;
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ds->last_dts = MP_NOPTS_VALUE;
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ds->correct_dts = ds->correct_pos = true;
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}
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void demux_set_ts_offset(struct demuxer *demuxer, double offset)
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{
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struct demux_internal *in = demuxer->in;
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pthread_mutex_lock(&in->lock);
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in->ts_offset = offset;
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pthread_mutex_unlock(&in->lock);
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}
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// Allocate a new sh_stream of the given type. It either has to be released
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// with talloc_free(), or added to a demuxer with demux_add_sh_stream(). You
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// cannot add or read packets from the stream before it has been added.
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struct sh_stream *demux_alloc_sh_stream(enum stream_type type)
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{
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struct sh_stream *sh = talloc_ptrtype(NULL, sh);
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*sh = (struct sh_stream) {
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.type = type,
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.index = -1,
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.ff_index = -1, // may be overwritten by demuxer
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.demuxer_id = -1, // ... same
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.codec = talloc_zero(sh, struct mp_codec_params),
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.tags = talloc_zero(sh, struct mp_tags),
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};
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sh->codec->type = type;
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return sh;
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}
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// Add a new sh_stream to the demuxer. Note that as soon as the stream has been
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// added, it must be immutable, and must not be released (this will happen when
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// the demuxer is destroyed).
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void demux_add_sh_stream(struct demuxer *demuxer, struct sh_stream *sh)
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{
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struct demux_internal *in = demuxer->in;
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pthread_mutex_lock(&in->lock);
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assert(!sh->ds); // must not be added yet
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sh->ds = talloc(sh, struct demux_stream);
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*sh->ds = (struct demux_stream) {
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.in = in,
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.type = sh->type,
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.selected = in->autoselect,
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};
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if (!sh->codec->codec)
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sh->codec->codec = "";
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sh->index = in->num_streams;
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if (sh->ff_index < 0)
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sh->ff_index = sh->index;
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if (sh->demuxer_id < 0) {
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sh->demuxer_id = 0;
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for (int n = 0; n < in->num_streams; n++) {
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if (in->streams[n]->type == sh->type)
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sh->demuxer_id += 1;
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}
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}
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MP_TARRAY_APPEND(in, in->streams, in->num_streams, sh);
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in->events |= DEMUX_EVENT_STREAMS;
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if (in->wakeup_cb)
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in->wakeup_cb(in->wakeup_cb_ctx);
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pthread_mutex_unlock(&in->lock);
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}
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// Update sh->tags (lazily). This must be called by demuxers which update
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// stream tags after init. (sh->tags can be accessed by the playback thread,
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// which means the demuxer thread cannot write or read it directly.)
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// Before init is finished, sh->tags can still be accessed freely.
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// Ownership of tags goes to the function.
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void demux_set_stream_tags(struct demuxer *demuxer, struct sh_stream *sh,
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struct mp_tags *tags)
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{
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struct demux_internal *in = demuxer->in;
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assert(demuxer == in->d_thread);
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if (sh->ds) {
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while (demuxer->num_update_stream_tags <= sh->index) {
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MP_TARRAY_APPEND(demuxer, demuxer->update_stream_tags,
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demuxer->num_update_stream_tags, NULL);
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}
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talloc_free(demuxer->update_stream_tags[sh->index]);
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demuxer->update_stream_tags[sh->index] = talloc_steal(demuxer, tags);
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demux_changed(demuxer, DEMUX_EVENT_METADATA);
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} else {
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// not added yet
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talloc_free(sh->tags);
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sh->tags = talloc_steal(sh, tags);
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}
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}
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// Return a stream with the given index. Since streams can only be added during
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// the lifetime of the demuxer, it is guaranteed that an index within the valid
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// range [0, demux_get_num_stream()) always returns a valid sh_stream pointer,
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// which will be valid until the demuxer is destroyed.
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struct sh_stream *demux_get_stream(struct demuxer *demuxer, int index)
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{
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struct demux_internal *in = demuxer->in;
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pthread_mutex_lock(&in->lock);
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assert(index >= 0 && index < in->num_streams);
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struct sh_stream *r = in->streams[index];
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pthread_mutex_unlock(&in->lock);
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return r;
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}
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// See demux_get_stream().
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int demux_get_num_stream(struct demuxer *demuxer)
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{
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struct demux_internal *in = demuxer->in;
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pthread_mutex_lock(&in->lock);
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int r = in->num_streams;
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pthread_mutex_unlock(&in->lock);
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return r;
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}
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void free_demuxer(demuxer_t *demuxer)
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{
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if (!demuxer)
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return;
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struct demux_internal *in = demuxer->in;
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assert(demuxer == in->d_user);
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demux_stop_thread(demuxer);
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if (demuxer->desc->close)
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demuxer->desc->close(in->d_thread);
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for (int n = in->num_streams - 1; n >= 0; n--) {
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ds_flush(in->streams[n]->ds);
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talloc_free(in->streams[n]);
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}
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pthread_mutex_destroy(&in->lock);
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pthread_cond_destroy(&in->wakeup);
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talloc_free(demuxer);
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}
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void free_demuxer_and_stream(struct demuxer *demuxer)
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{
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if (!demuxer)
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return;
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struct stream *s = demuxer->stream;
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free_demuxer(demuxer);
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free_stream(s);
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}
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// Start the demuxer thread, which reads ahead packets on its own.
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void demux_start_thread(struct demuxer *demuxer)
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{
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struct demux_internal *in = demuxer->in;
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assert(demuxer == in->d_user);
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if (!in->threading) {
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in->threading = true;
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if (pthread_create(&in->thread, NULL, demux_thread, in))
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in->threading = false;
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}
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}
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void demux_stop_thread(struct demuxer *demuxer)
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{
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struct demux_internal *in = demuxer->in;
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assert(demuxer == in->d_user);
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if (in->threading) {
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pthread_mutex_lock(&in->lock);
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in->thread_terminate = true;
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pthread_cond_signal(&in->wakeup);
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pthread_mutex_unlock(&in->lock);
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pthread_join(in->thread, NULL);
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in->threading = false;
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in->thread_terminate = false;
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}
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}
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// The demuxer thread will call cb(ctx) if there's a new packet, or EOF is reached.
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void demux_set_wakeup_cb(struct demuxer *demuxer, void (*cb)(void *ctx), void *ctx)
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{
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struct demux_internal *in = demuxer->in;
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pthread_mutex_lock(&in->lock);
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in->wakeup_cb = cb;
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in->wakeup_cb_ctx = ctx;
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pthread_mutex_unlock(&in->lock);
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}
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const char *stream_type_name(enum stream_type type)
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{
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switch (type) {
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case STREAM_VIDEO: return "video";
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case STREAM_AUDIO: return "audio";
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case STREAM_SUB: return "sub";
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default: return "unknown";
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}
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}
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void demuxer_feed_caption(struct sh_stream *stream, demux_packet_t *dp)
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{
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struct demuxer *demuxer = stream->ds->in->d_thread;
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struct sh_stream *sh = stream->ds->cc;
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if (!sh) {
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sh = demux_alloc_sh_stream(STREAM_SUB);
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if (!sh) {
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talloc_free(dp);
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return;
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}
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sh->codec->codec = "eia_608";
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stream->ds->cc = sh;
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demux_add_sh_stream(demuxer, sh);
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}
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dp->pts = MP_ADD_PTS(dp->pts, -stream->ds->in->ts_offset);
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dp->dts = MP_ADD_PTS(dp->dts, -stream->ds->in->ts_offset);
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demux_add_packet(sh, dp);
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}
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// An obscure mechanism to get stream switching to be executed faster.
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// On a switch, it seeks back, and then grabs all packets that were
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// "missing" from the packet queue of the newly selected stream.
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// Returns MP_NOPTS_VALUE if no seek should happen.
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static double get_refresh_seek_pts(struct demux_internal *in)
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{
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struct demuxer *demux = in->d_thread;
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double start_ts = in->ref_pts;
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bool needed = false;
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bool normal_seek = true;
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bool refresh_possible = true;
|
|
for (int n = 0; n < in->num_streams; n++) {
|
|
struct demux_stream *ds = in->streams[n]->ds;
|
|
|
|
if (!ds->selected)
|
|
continue;
|
|
|
|
if (ds->type == STREAM_VIDEO || ds->type == STREAM_AUDIO)
|
|
start_ts = MP_PTS_MIN(start_ts, ds->base_ts);
|
|
|
|
needed |= ds->need_refresh;
|
|
// If there were no other streams selected, we can use a normal seek.
|
|
normal_seek &= ds->need_refresh;
|
|
ds->need_refresh = false;
|
|
|
|
refresh_possible &= ds->correct_dts || ds->correct_pos;
|
|
}
|
|
|
|
if (!needed || start_ts == MP_NOPTS_VALUE || !demux->desc->seek ||
|
|
!demux->seekable || demux->partially_seekable)
|
|
return MP_NOPTS_VALUE;
|
|
|
|
if (normal_seek)
|
|
return start_ts;
|
|
|
|
if (!refresh_possible) {
|
|
MP_VERBOSE(in, "can't issue refresh seek\n");
|
|
return MP_NOPTS_VALUE;
|
|
}
|
|
|
|
for (int n = 0; n < in->num_streams; n++) {
|
|
struct demux_stream *ds = in->streams[n]->ds;
|
|
// Streams which didn't have any packets yet will return all packets,
|
|
// other streams return packets only starting from the last position.
|
|
if (ds->last_pos != -1 || ds->last_dts != MP_NOPTS_VALUE)
|
|
ds->refreshing |= ds->selected;
|
|
}
|
|
|
|
// Seek back to player's current position, with a small offset added.
|
|
return start_ts - 1.0;
|
|
}
|
|
|
|
void demux_add_packet(struct sh_stream *stream, demux_packet_t *dp)
|
|
{
|
|
struct demux_stream *ds = stream ? stream->ds : NULL;
|
|
if (!dp || !ds) {
|
|
talloc_free(dp);
|
|
return;
|
|
}
|
|
struct demux_internal *in = ds->in;
|
|
pthread_mutex_lock(&in->lock);
|
|
|
|
bool drop = ds->refreshing;
|
|
if (ds->refreshing) {
|
|
// Resume reading once the old position was reached (i.e. we start
|
|
// returning packets where we left off before the refresh).
|
|
// If it's the same position, drop, but continue normally next time.
|
|
if (ds->correct_dts) {
|
|
ds->refreshing = dp->dts < ds->last_dts;
|
|
} else if (ds->correct_pos) {
|
|
ds->refreshing = dp->pos < ds->last_pos;
|
|
} else {
|
|
ds->refreshing = false; // should not happen
|
|
}
|
|
}
|
|
|
|
if (!ds->selected || ds->need_refresh || in->seeking || drop) {
|
|
pthread_mutex_unlock(&in->lock);
|
|
talloc_free(dp);
|
|
return;
|
|
}
|
|
|
|
ds->correct_pos &= dp->pos >= 0 && dp->pos > ds->last_pos;
|
|
ds->correct_dts &= dp->dts != MP_NOPTS_VALUE && dp->dts > ds->last_dts;
|
|
ds->last_pos = dp->pos;
|
|
ds->last_dts = dp->dts;
|
|
|
|
dp->stream = stream->index;
|
|
dp->next = NULL;
|
|
|
|
ds->packs++;
|
|
ds->bytes += dp->len;
|
|
if (ds->tail) {
|
|
// next packet in stream
|
|
ds->tail->next = dp;
|
|
ds->tail = dp;
|
|
} else {
|
|
// first packet in stream
|
|
ds->head = ds->tail = dp;
|
|
}
|
|
|
|
// obviously not true anymore
|
|
ds->eof = false;
|
|
in->last_eof = in->eof = false;
|
|
|
|
// For video, PTS determination is not trivial, but for other media types
|
|
// distinguishing PTS and DTS is not useful.
|
|
if (stream->type != STREAM_VIDEO && dp->pts == MP_NOPTS_VALUE)
|
|
dp->pts = dp->dts;
|
|
|
|
double ts = dp->dts == MP_NOPTS_VALUE ? dp->pts : dp->dts;
|
|
if (ts != MP_NOPTS_VALUE && (ts > ds->last_ts || ts + 10 < ds->last_ts))
|
|
ds->last_ts = ts;
|
|
if (ds->base_ts == MP_NOPTS_VALUE)
|
|
ds->base_ts = ds->last_ts;
|
|
|
|
MP_DBG(in, "append packet to %s: size=%d pts=%f dts=%f pos=%"PRIi64" "
|
|
"[num=%zd size=%zd]\n", stream_type_name(stream->type),
|
|
dp->len, dp->pts, dp->dts, dp->pos, ds->packs, ds->bytes);
|
|
|
|
if (ds->in->wakeup_cb && !ds->head->next)
|
|
ds->in->wakeup_cb(ds->in->wakeup_cb_ctx);
|
|
pthread_cond_signal(&in->wakeup);
|
|
pthread_mutex_unlock(&in->lock);
|
|
}
|
|
|
|
// Returns true if there was "progress" (lock was released temporarily).
|
|
static bool read_packet(struct demux_internal *in)
|
|
{
|
|
in->eof = false;
|
|
in->idle = true;
|
|
|
|
// Check if we need to read a new packet. We do this if all queues are below
|
|
// the minimum, or if a stream explicitly needs new packets. Also includes
|
|
// safe-guards against packet queue overflow.
|
|
bool active = false, read_more = false;
|
|
size_t packs = 0, bytes = 0;
|
|
for (int n = 0; n < in->num_streams; n++) {
|
|
struct demux_stream *ds = in->streams[n]->ds;
|
|
active |= ds->active;
|
|
read_more |= (ds->active && !ds->head) || ds->refreshing;
|
|
packs += ds->packs;
|
|
bytes += ds->bytes;
|
|
if (ds->active && ds->last_ts != MP_NOPTS_VALUE && in->min_secs > 0 &&
|
|
ds->last_ts >= ds->base_ts)
|
|
read_more |= ds->last_ts - ds->base_ts < in->min_secs;
|
|
}
|
|
MP_DBG(in, "packets=%zd, bytes=%zd, active=%d, more=%d\n",
|
|
packs, bytes, active, read_more);
|
|
if (packs >= in->max_packs || bytes >= in->max_bytes) {
|
|
if (!in->warned_queue_overflow) {
|
|
in->warned_queue_overflow = true;
|
|
MP_WARN(in, "Too many packets in the demuxer packet queues:\n");
|
|
for (int n = 0; n < in->num_streams; n++) {
|
|
struct demux_stream *ds = in->streams[n]->ds;
|
|
if (ds->selected) {
|
|
MP_WARN(in, " %s/%d: %zd packets, %zd bytes\n",
|
|
stream_type_name(ds->type), n, ds->packs, ds->bytes);
|
|
}
|
|
}
|
|
}
|
|
for (int n = 0; n < in->num_streams; n++) {
|
|
struct demux_stream *ds = in->streams[n]->ds;
|
|
bool eof = !ds->head;
|
|
if (eof && !ds->eof) {
|
|
if (in->wakeup_cb)
|
|
in->wakeup_cb(in->wakeup_cb_ctx);
|
|
}
|
|
ds->eof |= eof;
|
|
}
|
|
pthread_cond_signal(&in->wakeup);
|
|
return false;
|
|
}
|
|
|
|
double seek_pts = get_refresh_seek_pts(in);
|
|
bool refresh_seek = seek_pts != MP_NOPTS_VALUE;
|
|
read_more |= refresh_seek;
|
|
|
|
if (!read_more)
|
|
return false;
|
|
|
|
// Actually read a packet. Drop the lock while doing so, because waiting
|
|
// for disk or network I/O can take time.
|
|
in->idle = false;
|
|
in->initial_state = false;
|
|
pthread_mutex_unlock(&in->lock);
|
|
|
|
struct demuxer *demux = in->d_thread;
|
|
|
|
if (refresh_seek) {
|
|
MP_VERBOSE(in, "refresh seek to %f\n", seek_pts);
|
|
demux->desc->seek(demux, seek_pts, SEEK_BACKWARD | SEEK_HR);
|
|
}
|
|
|
|
bool eof = !demux->desc->fill_buffer || demux->desc->fill_buffer(demux) <= 0;
|
|
update_cache(in);
|
|
|
|
pthread_mutex_lock(&in->lock);
|
|
|
|
if (!in->seeking) {
|
|
if (eof) {
|
|
for (int n = 0; n < in->num_streams; n++)
|
|
in->streams[n]->ds->eof = true;
|
|
// If we had EOF previously, then don't wakeup (avoids wakeup loop)
|
|
if (!in->last_eof) {
|
|
if (in->wakeup_cb)
|
|
in->wakeup_cb(in->wakeup_cb_ctx);
|
|
pthread_cond_signal(&in->wakeup);
|
|
MP_VERBOSE(in, "EOF reached.\n");
|
|
}
|
|
}
|
|
in->eof = in->last_eof = eof;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
// must be called locked; may temporarily unlock
|
|
static void ds_get_packets(struct demux_stream *ds)
|
|
{
|
|
const char *t = stream_type_name(ds->type);
|
|
struct demux_internal *in = ds->in;
|
|
MP_DBG(in, "reading packet for %s\n", t);
|
|
in->eof = false; // force retry
|
|
while (ds->selected && !ds->head) {
|
|
ds->active = true;
|
|
// Note: the following code marks EOF if it can't continue
|
|
if (in->threading) {
|
|
MP_VERBOSE(in, "waiting for demux thread (%s)\n", t);
|
|
pthread_cond_signal(&in->wakeup);
|
|
pthread_cond_wait(&in->wakeup, &in->lock);
|
|
} else {
|
|
read_packet(in);
|
|
}
|
|
if (ds->eof)
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void execute_trackswitch(struct demux_internal *in)
|
|
{
|
|
in->tracks_switched = false;
|
|
|
|
bool any_selected = false;
|
|
for (int n = 0; n < in->num_streams; n++)
|
|
any_selected |= in->streams[n]->ds->selected;
|
|
|
|
pthread_mutex_unlock(&in->lock);
|
|
|
|
if (in->d_thread->desc->control)
|
|
in->d_thread->desc->control(in->d_thread, DEMUXER_CTRL_SWITCHED_TRACKS, 0);
|
|
|
|
stream_control(in->d_thread->stream, STREAM_CTRL_SET_READAHEAD,
|
|
&(int){any_selected});
|
|
|
|
pthread_mutex_lock(&in->lock);
|
|
}
|
|
|
|
static void execute_seek(struct demux_internal *in)
|
|
{
|
|
int flags = in->seek_flags;
|
|
double pts = in->seek_pts;
|
|
in->seeking = false;
|
|
in->initial_state = false;
|
|
|
|
pthread_mutex_unlock(&in->lock);
|
|
|
|
MP_VERBOSE(in, "execute seek (to %f flags %d)\n", pts, flags);
|
|
|
|
if (in->d_thread->desc->seek)
|
|
in->d_thread->desc->seek(in->d_thread, pts, flags);
|
|
|
|
MP_VERBOSE(in, "seek done\n");
|
|
|
|
pthread_mutex_lock(&in->lock);
|
|
}
|
|
|
|
static void *demux_thread(void *pctx)
|
|
{
|
|
struct demux_internal *in = pctx;
|
|
mpthread_set_name("demux");
|
|
pthread_mutex_lock(&in->lock);
|
|
while (!in->thread_terminate) {
|
|
if (in->run_fn) {
|
|
in->run_fn(in->run_fn_arg);
|
|
in->run_fn = NULL;
|
|
pthread_cond_signal(&in->wakeup);
|
|
continue;
|
|
}
|
|
if (in->tracks_switched) {
|
|
execute_trackswitch(in);
|
|
continue;
|
|
}
|
|
if (in->seeking) {
|
|
execute_seek(in);
|
|
continue;
|
|
}
|
|
if (!in->eof) {
|
|
if (read_packet(in))
|
|
continue; // read_packet unlocked, so recheck conditions
|
|
}
|
|
if (in->force_cache_update) {
|
|
pthread_mutex_unlock(&in->lock);
|
|
update_cache(in);
|
|
pthread_mutex_lock(&in->lock);
|
|
in->force_cache_update = false;
|
|
continue;
|
|
}
|
|
pthread_cond_signal(&in->wakeup);
|
|
pthread_cond_wait(&in->wakeup, &in->lock);
|
|
}
|
|
pthread_mutex_unlock(&in->lock);
|
|
return NULL;
|
|
}
|
|
|
|
static struct demux_packet *dequeue_packet(struct demux_stream *ds)
|
|
{
|
|
if (!ds->head)
|
|
return NULL;
|
|
struct demux_packet *pkt = ds->head;
|
|
ds->head = pkt->next;
|
|
pkt->next = NULL;
|
|
if (!ds->head)
|
|
ds->tail = NULL;
|
|
ds->bytes -= pkt->len;
|
|
ds->packs--;
|
|
|
|
double ts = pkt->dts == MP_NOPTS_VALUE ? pkt->pts : pkt->dts;
|
|
if (ts != MP_NOPTS_VALUE)
|
|
ds->base_ts = ts;
|
|
|
|
if (pkt->keyframe && ts != MP_NOPTS_VALUE) {
|
|
// Update bitrate - only at keyframe points, because we use the
|
|
// (possibly) reordered packet timestamps instead of realtime.
|
|
double d = ts - ds->last_br_ts;
|
|
if (ds->last_br_ts == MP_NOPTS_VALUE || d < 0) {
|
|
ds->bitrate = -1;
|
|
ds->last_br_ts = ts;
|
|
ds->last_br_bytes = 0;
|
|
} else if (d > 0 && d >= 0.5) { // a window of least 500ms for UI purposes
|
|
ds->bitrate = ds->last_br_bytes / d;
|
|
ds->last_br_ts = ts;
|
|
ds->last_br_bytes = 0;
|
|
}
|
|
}
|
|
ds->last_br_bytes += pkt->len;
|
|
|
|
// This implies this function is actually called from "the" user thread.
|
|
if (pkt->pos >= ds->in->d_user->filepos)
|
|
ds->in->d_user->filepos = pkt->pos;
|
|
|
|
pkt->pts = MP_ADD_PTS(pkt->pts, ds->in->ts_offset);
|
|
pkt->dts = MP_ADD_PTS(pkt->dts, ds->in->ts_offset);
|
|
|
|
pkt->start = MP_ADD_PTS(pkt->start, ds->in->ts_offset);
|
|
pkt->end = MP_ADD_PTS(pkt->end, ds->in->ts_offset);
|
|
|
|
return pkt;
|
|
}
|
|
|
|
// Sparse packets (Subtitles) interleaved with other non-sparse packets (video,
|
|
// audio) should never be read actively, meaning the demuxer thread does not
|
|
// try to exceed default readahead in order to find a new packet.
|
|
static bool use_lazy_subtitle_reading(struct demux_stream *ds)
|
|
{
|
|
if (ds->type != STREAM_SUB)
|
|
return false;
|
|
for (int n = 0; n < ds->in->num_streams; n++) {
|
|
struct demux_stream *s = ds->in->streams[n]->ds;
|
|
if (s->type != STREAM_SUB && s->selected && !s->eof)
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
// Read a packet from the given stream. The returned packet belongs to the
|
|
// caller, who has to free it with talloc_free(). Might block. Returns NULL
|
|
// on EOF.
|
|
struct demux_packet *demux_read_packet(struct sh_stream *sh)
|
|
{
|
|
struct demux_stream *ds = sh ? sh->ds : NULL;
|
|
struct demux_packet *pkt = NULL;
|
|
if (ds) {
|
|
pthread_mutex_lock(&ds->in->lock);
|
|
if (!use_lazy_subtitle_reading(ds))
|
|
ds_get_packets(ds);
|
|
pkt = dequeue_packet(ds);
|
|
pthread_cond_signal(&ds->in->wakeup); // possibly read more
|
|
pthread_mutex_unlock(&ds->in->lock);
|
|
}
|
|
return pkt;
|
|
}
|
|
|
|
// Poll the demuxer queue, and if there's a packet, return it. Otherwise, just
|
|
// make the demuxer thread read packets for this stream, and if there's at
|
|
// least one packet, call the wakeup callback.
|
|
// Unlike demux_read_packet(), this always enables readahead (except for
|
|
// interleaved subtitles).
|
|
// Returns:
|
|
// < 0: EOF was reached, *out_pkt=NULL
|
|
// == 0: no new packet yet, but maybe later, *out_pkt=NULL
|
|
// > 0: new packet read, *out_pkt is set
|
|
// Note: when reading interleaved subtitles, the demuxer won't try to forcibly
|
|
// read ahead to get the next subtitle packet (as the next packet could be
|
|
// minutes away). In this situation, this function will just return -1.
|
|
int demux_read_packet_async(struct sh_stream *sh, struct demux_packet **out_pkt)
|
|
{
|
|
struct demux_stream *ds = sh ? sh->ds : NULL;
|
|
int r = -1;
|
|
*out_pkt = NULL;
|
|
if (ds) {
|
|
if (ds->in->threading) {
|
|
pthread_mutex_lock(&ds->in->lock);
|
|
*out_pkt = dequeue_packet(ds);
|
|
if (use_lazy_subtitle_reading(ds)) {
|
|
r = *out_pkt ? 1 : -1;
|
|
} else {
|
|
r = *out_pkt ? 1 : ((ds->eof || !ds->selected) ? -1 : 0);
|
|
ds->active = ds->selected; // enable readahead
|
|
ds->in->eof = false; // force retry
|
|
pthread_cond_signal(&ds->in->wakeup); // possibly read more
|
|
}
|
|
pthread_mutex_unlock(&ds->in->lock);
|
|
} else {
|
|
*out_pkt = demux_read_packet(sh);
|
|
r = *out_pkt ? 1 : -1;
|
|
}
|
|
}
|
|
return r;
|
|
}
|
|
|
|
// Return whether a packet is queued. Never blocks, never forces any reads.
|
|
bool demux_has_packet(struct sh_stream *sh)
|
|
{
|
|
bool has_packet = false;
|
|
if (sh) {
|
|
pthread_mutex_lock(&sh->ds->in->lock);
|
|
has_packet = sh->ds->head;
|
|
pthread_mutex_unlock(&sh->ds->in->lock);
|
|
}
|
|
return has_packet;
|
|
}
|
|
|
|
// Read and return any packet we find. NULL means EOF.
|
|
struct demux_packet *demux_read_any_packet(struct demuxer *demuxer)
|
|
{
|
|
struct demux_internal *in = demuxer->in;
|
|
assert(!in->threading); // doesn't work with threading
|
|
bool read_more = true;
|
|
while (read_more) {
|
|
for (int n = 0; n < in->num_streams; n++) {
|
|
struct sh_stream *sh = in->streams[n];
|
|
sh->ds->active = sh->ds->selected; // force read_packet() to read
|
|
struct demux_packet *pkt = dequeue_packet(sh->ds);
|
|
if (pkt)
|
|
return pkt;
|
|
}
|
|
// retry after calling this
|
|
pthread_mutex_lock(&in->lock); // lock only because read_packet unlocks
|
|
read_more = read_packet(in);
|
|
read_more &= !in->eof;
|
|
pthread_mutex_unlock(&in->lock);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
// ====================================================================
|
|
|
|
void demuxer_help(struct mp_log *log)
|
|
{
|
|
int i;
|
|
|
|
mp_info(log, "Available demuxers:\n");
|
|
mp_info(log, " demuxer: info:\n");
|
|
for (i = 0; demuxer_list[i]; i++) {
|
|
mp_info(log, "%10s %s\n",
|
|
demuxer_list[i]->name, demuxer_list[i]->desc);
|
|
}
|
|
}
|
|
|
|
static const char *d_level(enum demux_check level)
|
|
{
|
|
switch (level) {
|
|
case DEMUX_CHECK_FORCE: return "force";
|
|
case DEMUX_CHECK_UNSAFE: return "unsafe";
|
|
case DEMUX_CHECK_REQUEST:return "request";
|
|
case DEMUX_CHECK_NORMAL: return "normal";
|
|
}
|
|
abort();
|
|
}
|
|
|
|
static int decode_float(char *str, float *out)
|
|
{
|
|
char *rest;
|
|
float dec_val;
|
|
|
|
dec_val = strtod(str, &rest);
|
|
if (!rest || (rest == str) || !isfinite(dec_val))
|
|
return -1;
|
|
|
|
*out = dec_val;
|
|
return 0;
|
|
}
|
|
|
|
static int decode_gain(struct mp_log *log, struct mp_tags *tags,
|
|
const char *tag, float *out)
|
|
{
|
|
char *tag_val = NULL;
|
|
float dec_val;
|
|
|
|
tag_val = mp_tags_get_str(tags, tag);
|
|
if (!tag_val)
|
|
return -1;
|
|
|
|
if (decode_float(tag_val, &dec_val) < 0) {
|
|
mp_msg(log, MSGL_ERR, "Invalid replaygain value\n");
|
|
return -1;
|
|
}
|
|
|
|
*out = dec_val;
|
|
return 0;
|
|
}
|
|
|
|
static int decode_peak(struct mp_log *log, struct mp_tags *tags,
|
|
const char *tag, float *out)
|
|
{
|
|
char *tag_val = NULL;
|
|
float dec_val;
|
|
|
|
*out = 1.0;
|
|
|
|
tag_val = mp_tags_get_str(tags, tag);
|
|
if (!tag_val)
|
|
return 0;
|
|
|
|
if (decode_float(tag_val, &dec_val) < 0 || dec_val <= 0.0)
|
|
return -1;
|
|
|
|
*out = dec_val;
|
|
return 0;
|
|
}
|
|
|
|
static struct replaygain_data *decode_rgain(struct mp_log *log,
|
|
struct mp_tags *tags)
|
|
{
|
|
struct replaygain_data rg = {0};
|
|
|
|
if (decode_gain(log, tags, "REPLAYGAIN_TRACK_GAIN", &rg.track_gain) >= 0 &&
|
|
decode_peak(log, tags, "REPLAYGAIN_TRACK_PEAK", &rg.track_peak) >= 0)
|
|
{
|
|
if (decode_gain(log, tags, "REPLAYGAIN_ALBUM_GAIN", &rg.album_gain) < 0 ||
|
|
decode_peak(log, tags, "REPLAYGAIN_ALBUM_PEAK", &rg.album_peak) < 0)
|
|
{
|
|
rg.album_gain = rg.track_gain;
|
|
rg.album_peak = rg.track_peak;
|
|
}
|
|
return talloc_memdup(NULL, &rg, sizeof(rg));
|
|
}
|
|
|
|
if (decode_gain(log, tags, "REPLAYGAIN_GAIN", &rg.track_gain) >= 0 &&
|
|
decode_peak(log, tags, "REPLAYGAIN_PEAK", &rg.track_peak) >= 0)
|
|
{
|
|
rg.album_gain = rg.track_gain;
|
|
rg.album_peak = rg.track_peak;
|
|
return talloc_memdup(NULL, &rg, sizeof(rg));
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static void demux_update_replaygain(demuxer_t *demuxer)
|
|
{
|
|
struct demux_internal *in = demuxer->in;
|
|
for (int n = 0; n < in->num_streams; n++) {
|
|
struct sh_stream *sh = in->streams[n];
|
|
if (sh->type == STREAM_AUDIO && !sh->codec->replaygain_data) {
|
|
struct replaygain_data *rg = decode_rgain(demuxer->log, sh->tags);
|
|
if (!rg)
|
|
rg = decode_rgain(demuxer->log, demuxer->metadata);
|
|
if (rg)
|
|
sh->codec->replaygain_data = talloc_steal(in, rg);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Copy all fields from src to dst, depending on event flags.
|
|
static void demux_copy(struct demuxer *dst, struct demuxer *src)
|
|
{
|
|
if (src->events & DEMUX_EVENT_INIT) {
|
|
// Note that we do as shallow copies as possible. We expect the data
|
|
// that is not-copied (only referenced) to be immutable.
|
|
// This implies e.g. that no chapters are added after initialization.
|
|
dst->chapters = src->chapters;
|
|
dst->num_chapters = src->num_chapters;
|
|
dst->editions = src->editions;
|
|
dst->num_editions = src->num_editions;
|
|
dst->edition = src->edition;
|
|
dst->attachments = src->attachments;
|
|
dst->num_attachments = src->num_attachments;
|
|
dst->matroska_data = src->matroska_data;
|
|
dst->playlist = src->playlist;
|
|
dst->seekable = src->seekable;
|
|
dst->partially_seekable = src->partially_seekable;
|
|
dst->filetype = src->filetype;
|
|
dst->ts_resets_possible = src->ts_resets_possible;
|
|
dst->fully_read = src->fully_read;
|
|
dst->start_time = src->start_time;
|
|
dst->is_network = src->is_network;
|
|
dst->priv = src->priv;
|
|
}
|
|
|
|
if (src->events & DEMUX_EVENT_METADATA) {
|
|
talloc_free(dst->metadata);
|
|
dst->metadata = mp_tags_dup(dst, src->metadata);
|
|
|
|
if (dst->num_update_stream_tags != src->num_update_stream_tags) {
|
|
dst->num_update_stream_tags = src->num_update_stream_tags;
|
|
talloc_free(dst->update_stream_tags);
|
|
dst->update_stream_tags =
|
|
talloc_zero_array(dst, struct mp_tags *, dst->num_update_stream_tags);
|
|
}
|
|
for (int n = 0; n < dst->num_update_stream_tags; n++) {
|
|
talloc_free(dst->update_stream_tags[n]);
|
|
dst->update_stream_tags[n] =
|
|
talloc_steal(dst->update_stream_tags, src->update_stream_tags[n]);
|
|
src->update_stream_tags[n] = NULL;
|
|
}
|
|
}
|
|
|
|
dst->events |= src->events;
|
|
src->events = 0;
|
|
}
|
|
|
|
// This is called by demuxer implementations if certain parameters change
|
|
// at runtime.
|
|
// events is one of DEMUX_EVENT_*
|
|
// The code will copy the fields references by the events to the user-thread.
|
|
void demux_changed(demuxer_t *demuxer, int events)
|
|
{
|
|
assert(demuxer == demuxer->in->d_thread); // call from demuxer impl. only
|
|
struct demux_internal *in = demuxer->in;
|
|
|
|
demuxer->events |= events;
|
|
|
|
update_cache(in);
|
|
|
|
pthread_mutex_lock(&in->lock);
|
|
|
|
if (demuxer->events & DEMUX_EVENT_INIT)
|
|
demuxer_sort_chapters(demuxer);
|
|
|
|
demux_copy(in->d_buffer, demuxer);
|
|
|
|
if (in->wakeup_cb)
|
|
in->wakeup_cb(in->wakeup_cb_ctx);
|
|
pthread_mutex_unlock(&in->lock);
|
|
}
|
|
|
|
// Called by the user thread (i.e. player) to update metadata and other things
|
|
// from the demuxer thread.
|
|
void demux_update(demuxer_t *demuxer)
|
|
{
|
|
assert(demuxer == demuxer->in->d_user);
|
|
struct demux_internal *in = demuxer->in;
|
|
|
|
if (!in->threading)
|
|
update_cache(in);
|
|
|
|
pthread_mutex_lock(&in->lock);
|
|
demux_copy(demuxer, in->d_buffer);
|
|
demuxer->events |= in->events;
|
|
in->events = 0;
|
|
if (demuxer->events & DEMUX_EVENT_METADATA) {
|
|
int num_streams = MPMIN(in->num_streams, demuxer->num_update_stream_tags);
|
|
for (int n = 0; n < num_streams; n++) {
|
|
struct mp_tags *tags = demuxer->update_stream_tags[n];
|
|
demuxer->update_stream_tags[n] = NULL;
|
|
if (tags) {
|
|
struct sh_stream *sh = in->streams[n];
|
|
talloc_free(sh->tags);
|
|
sh->tags = talloc_steal(sh, tags);
|
|
}
|
|
}
|
|
|
|
// Often useful audio-only files, which have metadata in the audio track
|
|
// metadata instead of the main metadata (especially OGG).
|
|
if (in->num_streams == 1)
|
|
mp_tags_merge(demuxer->metadata, in->streams[0]->tags);
|
|
|
|
if (in->stream_metadata)
|
|
mp_tags_merge(demuxer->metadata, in->stream_metadata);
|
|
}
|
|
if (demuxer->events & (DEMUX_EVENT_METADATA | DEMUX_EVENT_STREAMS))
|
|
demux_update_replaygain(demuxer);
|
|
pthread_mutex_unlock(&in->lock);
|
|
}
|
|
|
|
static void demux_init_cache(struct demuxer *demuxer)
|
|
{
|
|
struct demux_internal *in = demuxer->in;
|
|
struct stream *stream = demuxer->stream;
|
|
|
|
char *base = NULL;
|
|
stream_control(stream, STREAM_CTRL_GET_BASE_FILENAME, &base);
|
|
in->stream_base_filename = talloc_steal(demuxer, base);
|
|
}
|
|
|
|
static void demux_init_cuesheet(struct demuxer *demuxer)
|
|
{
|
|
char *cue = mp_tags_get_str(demuxer->metadata, "cuesheet");
|
|
if (cue && !demuxer->num_chapters) {
|
|
struct cue_file *f = mp_parse_cue(bstr0(cue));
|
|
if (f) {
|
|
if (mp_check_embedded_cue(f) < 0) {
|
|
MP_WARN(demuxer, "Embedded cue sheet references more than one file. "
|
|
"Ignoring it.\n");
|
|
} else {
|
|
for (int n = 0; n < f->num_tracks; n++) {
|
|
struct cue_track *t = &f->tracks[n];
|
|
int idx = demuxer_add_chapter(demuxer, "", t->start, -1);
|
|
mp_tags_merge(demuxer->chapters[idx].metadata, t->tags);
|
|
}
|
|
}
|
|
}
|
|
talloc_free(f);
|
|
}
|
|
}
|
|
|
|
static void demux_maybe_replace_stream(struct demuxer *demuxer)
|
|
{
|
|
struct demux_internal *in = demuxer->in;
|
|
assert(!in->threading && demuxer == in->d_user);
|
|
|
|
if (demuxer->fully_read) {
|
|
MP_VERBOSE(demuxer, "assuming demuxer read all data; closing stream\n");
|
|
free_stream(demuxer->stream);
|
|
demuxer->stream = open_memory_stream(NULL, 0); // dummy
|
|
in->d_thread->stream = demuxer->stream;
|
|
in->d_buffer->stream = demuxer->stream;
|
|
|
|
if (demuxer->desc->control)
|
|
demuxer->desc->control(in->d_thread, DEMUXER_CTRL_REPLACE_STREAM, NULL);
|
|
}
|
|
}
|
|
|
|
static struct demuxer *open_given_type(struct mpv_global *global,
|
|
struct mp_log *log,
|
|
const struct demuxer_desc *desc,
|
|
struct stream *stream,
|
|
struct demuxer_params *params,
|
|
enum demux_check check)
|
|
{
|
|
if (mp_cancel_test(stream->cancel))
|
|
return NULL;
|
|
|
|
struct demuxer *demuxer = talloc_ptrtype(NULL, demuxer);
|
|
struct demux_opts *opts = mp_get_config_group(demuxer, global, &demux_conf);
|
|
*demuxer = (struct demuxer) {
|
|
.desc = desc,
|
|
.stream = stream,
|
|
.seekable = stream->seekable,
|
|
.filepos = -1,
|
|
.global = global,
|
|
.log = mp_log_new(demuxer, log, desc->name),
|
|
.glog = log,
|
|
.filename = talloc_strdup(demuxer, stream->url),
|
|
.is_network = stream->is_network,
|
|
.access_references = opts->access_references,
|
|
.events = DEMUX_EVENT_ALL,
|
|
};
|
|
demuxer->seekable = stream->seekable;
|
|
if (demuxer->stream->uncached_stream &&
|
|
!demuxer->stream->uncached_stream->seekable)
|
|
demuxer->seekable = false;
|
|
|
|
struct demux_internal *in = demuxer->in = talloc_ptrtype(demuxer, in);
|
|
*in = (struct demux_internal){
|
|
.log = demuxer->log,
|
|
.d_thread = talloc(demuxer, struct demuxer),
|
|
.d_buffer = talloc(demuxer, struct demuxer),
|
|
.d_user = demuxer,
|
|
.min_secs = opts->min_secs,
|
|
.max_packs = opts->max_packs,
|
|
.max_bytes = opts->max_bytes,
|
|
.initial_state = true,
|
|
};
|
|
pthread_mutex_init(&in->lock, NULL);
|
|
pthread_cond_init(&in->wakeup, NULL);
|
|
|
|
if (stream->uncached_stream)
|
|
in->min_secs = MPMAX(in->min_secs, opts->min_secs_cache);
|
|
|
|
*in->d_thread = *demuxer;
|
|
*in->d_buffer = *demuxer;
|
|
|
|
in->d_thread->metadata = talloc_zero(in->d_thread, struct mp_tags);
|
|
in->d_user->metadata = talloc_zero(in->d_user, struct mp_tags);
|
|
in->d_buffer->metadata = talloc_zero(in->d_buffer, struct mp_tags);
|
|
|
|
mp_dbg(log, "Trying demuxer: %s (force-level: %s)\n",
|
|
desc->name, d_level(check));
|
|
|
|
// not for DVD/BD/DVB in particular
|
|
if (stream->seekable && (!params || !params->timeline))
|
|
stream_seek(stream, 0);
|
|
|
|
// Peek this much data to avoid that stream_read() run by some demuxers
|
|
// will flush previous peeked data.
|
|
stream_peek(stream, STREAM_BUFFER_SIZE);
|
|
|
|
in->d_thread->params = params; // temporary during open()
|
|
int ret = demuxer->desc->open(in->d_thread, check);
|
|
if (ret >= 0) {
|
|
in->d_thread->params = NULL;
|
|
if (in->d_thread->filetype)
|
|
mp_verbose(log, "Detected file format: %s (%s)\n",
|
|
in->d_thread->filetype, desc->desc);
|
|
else
|
|
mp_verbose(log, "Detected file format: %s\n", desc->desc);
|
|
if (!in->d_thread->seekable)
|
|
mp_verbose(log, "Stream is not seekable.\n");
|
|
if (!in->d_thread->seekable && opts->force_seekable) {
|
|
mp_warn(log, "Not seekable, but enabling seeking on user request.\n");
|
|
in->d_thread->seekable = true;
|
|
in->d_thread->partially_seekable = true;
|
|
}
|
|
demux_init_cuesheet(in->d_thread);
|
|
demux_init_cache(demuxer);
|
|
demux_changed(in->d_thread, DEMUX_EVENT_ALL);
|
|
demux_update(demuxer);
|
|
stream_control(demuxer->stream, STREAM_CTRL_SET_READAHEAD, &(int){false});
|
|
if (!(params && params->disable_timeline)) {
|
|
struct timeline *tl = timeline_load(global, log, demuxer);
|
|
if (tl) {
|
|
struct demuxer_params params2 = {0};
|
|
params2.timeline = tl;
|
|
struct demuxer *sub =
|
|
open_given_type(global, log, &demuxer_desc_timeline, stream,
|
|
¶ms2, DEMUX_CHECK_FORCE);
|
|
if (sub)
|
|
return sub;
|
|
timeline_destroy(tl);
|
|
}
|
|
}
|
|
return demuxer;
|
|
}
|
|
|
|
free_demuxer(demuxer);
|
|
return NULL;
|
|
}
|
|
|
|
static const int d_normal[] = {DEMUX_CHECK_NORMAL, DEMUX_CHECK_UNSAFE, -1};
|
|
static const int d_request[] = {DEMUX_CHECK_REQUEST, -1};
|
|
static const int d_force[] = {DEMUX_CHECK_FORCE, -1};
|
|
|
|
// params can be NULL
|
|
struct demuxer *demux_open(struct stream *stream, struct demuxer_params *params,
|
|
struct mpv_global *global)
|
|
{
|
|
const int *check_levels = d_normal;
|
|
const struct demuxer_desc *check_desc = NULL;
|
|
struct mp_log *log = mp_log_new(NULL, global->log, "!demux");
|
|
struct demuxer *demuxer = NULL;
|
|
char *force_format = params ? params->force_format : NULL;
|
|
|
|
if (!force_format)
|
|
force_format = stream->demuxer;
|
|
|
|
if (force_format && force_format[0]) {
|
|
check_levels = d_request;
|
|
if (force_format[0] == '+') {
|
|
force_format += 1;
|
|
check_levels = d_force;
|
|
}
|
|
for (int n = 0; demuxer_list[n]; n++) {
|
|
if (strcmp(demuxer_list[n]->name, force_format) == 0)
|
|
check_desc = demuxer_list[n];
|
|
}
|
|
if (!check_desc) {
|
|
mp_err(log, "Demuxer %s does not exist.\n", force_format);
|
|
goto done;
|
|
}
|
|
}
|
|
|
|
// Test demuxers from first to last, one pass for each check_levels[] entry
|
|
for (int pass = 0; check_levels[pass] != -1; pass++) {
|
|
enum demux_check level = check_levels[pass];
|
|
mp_verbose(log, "Trying demuxers for level=%s.\n", d_level(level));
|
|
for (int n = 0; demuxer_list[n]; n++) {
|
|
const struct demuxer_desc *desc = demuxer_list[n];
|
|
if (!check_desc || desc == check_desc) {
|
|
demuxer = open_given_type(global, log, desc, stream, params, level);
|
|
if (demuxer) {
|
|
talloc_steal(demuxer, log);
|
|
log = NULL;
|
|
goto done;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
done:
|
|
talloc_free(log);
|
|
return demuxer;
|
|
}
|
|
|
|
// Convenience function: open the stream, enable the cache (according to params
|
|
// and global opts.), open the demuxer.
|
|
// (use free_demuxer_and_stream() to free the underlying stream too)
|
|
// Also for some reason may close the opened stream if it's not needed.
|
|
struct demuxer *demux_open_url(const char *url,
|
|
struct demuxer_params *params,
|
|
struct mp_cancel *cancel,
|
|
struct mpv_global *global)
|
|
{
|
|
struct demuxer_params dummy = {0};
|
|
if (!params)
|
|
params = &dummy;
|
|
struct stream *s = stream_create(url, STREAM_READ | params->stream_flags,
|
|
cancel, global);
|
|
if (!s)
|
|
return NULL;
|
|
if (params->allow_capture) {
|
|
char *f;
|
|
mp_read_option_raw(global, "stream-capture", &m_option_type_string, &f);
|
|
stream_set_capture_file(s, f);
|
|
talloc_free(f);
|
|
}
|
|
if (!params->disable_cache)
|
|
stream_enable_cache_defaults(&s);
|
|
struct demuxer *d = demux_open(s, params, global);
|
|
if (d) {
|
|
demux_maybe_replace_stream(d);
|
|
} else {
|
|
params->demuxer_failed = true;
|
|
free_stream(s);
|
|
}
|
|
return d;
|
|
}
|
|
|
|
static void flush_locked(demuxer_t *demuxer)
|
|
{
|
|
for (int n = 0; n < demuxer->in->num_streams; n++)
|
|
ds_flush(demuxer->in->streams[n]->ds);
|
|
demuxer->in->warned_queue_overflow = false;
|
|
demuxer->in->eof = false;
|
|
demuxer->in->last_eof = false;
|
|
demuxer->in->idle = true;
|
|
demuxer->filepos = -1; // implicitly synchronized
|
|
}
|
|
|
|
// clear the packet queues
|
|
void demux_flush(demuxer_t *demuxer)
|
|
{
|
|
pthread_mutex_lock(&demuxer->in->lock);
|
|
flush_locked(demuxer);
|
|
pthread_mutex_unlock(&demuxer->in->lock);
|
|
}
|
|
|
|
int demux_seek(demuxer_t *demuxer, double seek_pts, int flags)
|
|
{
|
|
struct demux_internal *in = demuxer->in;
|
|
assert(demuxer == in->d_user);
|
|
|
|
if (!demuxer->seekable) {
|
|
MP_WARN(demuxer, "Cannot seek in this file.\n");
|
|
return 0;
|
|
}
|
|
|
|
if (seek_pts == MP_NOPTS_VALUE)
|
|
return 0;
|
|
|
|
if (!(flags & SEEK_FORWARD))
|
|
flags |= SEEK_BACKWARD;
|
|
|
|
pthread_mutex_lock(&in->lock);
|
|
|
|
MP_VERBOSE(in, "queuing seek to %f%s\n", seek_pts,
|
|
in->seeking ? " (cascade)" : "");
|
|
|
|
flush_locked(demuxer);
|
|
in->seeking = true;
|
|
in->seek_flags = flags;
|
|
in->seek_pts = seek_pts;
|
|
if (!(flags & SEEK_FACTOR))
|
|
in->seek_pts = MP_ADD_PTS(in->seek_pts, -in->ts_offset);
|
|
|
|
if (!in->threading)
|
|
execute_seek(in);
|
|
|
|
pthread_cond_signal(&in->wakeup);
|
|
pthread_mutex_unlock(&in->lock);
|
|
|
|
return 1;
|
|
}
|
|
|
|
struct sh_stream *demuxer_stream_by_demuxer_id(struct demuxer *d,
|
|
enum stream_type t, int id)
|
|
{
|
|
int num = demux_get_num_stream(d);
|
|
for (int n = 0; n < num; n++) {
|
|
struct sh_stream *s = demux_get_stream(d, n);
|
|
if (s->type == t && s->demuxer_id == id)
|
|
return s;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
// Set whether the given stream should return packets.
|
|
// ref_pts is used only if the stream is enabled. Then it serves as approximate
|
|
// start pts for this stream (in the worst case it is ignored).
|
|
void demuxer_select_track(struct demuxer *demuxer, struct sh_stream *stream,
|
|
double ref_pts, bool selected)
|
|
{
|
|
struct demux_internal *in = demuxer->in;
|
|
pthread_mutex_lock(&in->lock);
|
|
// don't flush buffers if stream is already selected / unselected
|
|
if (stream->ds->selected != selected) {
|
|
stream->ds->selected = selected;
|
|
ds_flush(stream->ds);
|
|
in->tracks_switched = true;
|
|
stream->ds->need_refresh = selected && !in->initial_state;
|
|
if (stream->ds->need_refresh)
|
|
in->ref_pts = MP_ADD_PTS(ref_pts, -in->ts_offset);
|
|
if (in->threading) {
|
|
pthread_cond_signal(&in->wakeup);
|
|
} else {
|
|
execute_trackswitch(in);
|
|
}
|
|
}
|
|
pthread_mutex_unlock(&in->lock);
|
|
}
|
|
|
|
void demux_set_stream_autoselect(struct demuxer *demuxer, bool autoselect)
|
|
{
|
|
assert(!demuxer->in->threading); // laziness
|
|
demuxer->in->autoselect = autoselect;
|
|
}
|
|
|
|
bool demux_stream_is_selected(struct sh_stream *stream)
|
|
{
|
|
if (!stream)
|
|
return false;
|
|
bool r = false;
|
|
pthread_mutex_lock(&stream->ds->in->lock);
|
|
r = stream->ds->selected;
|
|
pthread_mutex_unlock(&stream->ds->in->lock);
|
|
return r;
|
|
}
|
|
|
|
int demuxer_add_attachment(demuxer_t *demuxer, char *name, char *type,
|
|
void *data, size_t data_size)
|
|
{
|
|
if (!(demuxer->num_attachments % 32))
|
|
demuxer->attachments = talloc_realloc(demuxer, demuxer->attachments,
|
|
struct demux_attachment,
|
|
demuxer->num_attachments + 32);
|
|
|
|
struct demux_attachment *att = &demuxer->attachments[demuxer->num_attachments];
|
|
att->name = talloc_strdup(demuxer->attachments, name);
|
|
att->type = talloc_strdup(demuxer->attachments, type);
|
|
att->data = talloc_memdup(demuxer->attachments, data, data_size);
|
|
att->data_size = data_size;
|
|
|
|
return demuxer->num_attachments++;
|
|
}
|
|
|
|
static int chapter_compare(const void *p1, const void *p2)
|
|
{
|
|
struct demux_chapter *c1 = (void *)p1;
|
|
struct demux_chapter *c2 = (void *)p2;
|
|
|
|
if (c1->pts > c2->pts)
|
|
return 1;
|
|
else if (c1->pts < c2->pts)
|
|
return -1;
|
|
return c1->original_index > c2->original_index ? 1 :-1; // never equal
|
|
}
|
|
|
|
static void demuxer_sort_chapters(demuxer_t *demuxer)
|
|
{
|
|
qsort(demuxer->chapters, demuxer->num_chapters,
|
|
sizeof(struct demux_chapter), chapter_compare);
|
|
}
|
|
|
|
int demuxer_add_chapter(demuxer_t *demuxer, char *name,
|
|
double pts, uint64_t demuxer_id)
|
|
{
|
|
struct demux_chapter new = {
|
|
.original_index = demuxer->num_chapters,
|
|
.pts = pts,
|
|
.metadata = talloc_zero(demuxer, struct mp_tags),
|
|
.demuxer_id = demuxer_id,
|
|
};
|
|
mp_tags_set_str(new.metadata, "TITLE", name);
|
|
MP_TARRAY_APPEND(demuxer, demuxer->chapters, demuxer->num_chapters, new);
|
|
return demuxer->num_chapters - 1;
|
|
}
|
|
|
|
double demuxer_get_time_length(struct demuxer *demuxer)
|
|
{
|
|
double len;
|
|
if (demux_control(demuxer, DEMUXER_CTRL_GET_TIME_LENGTH, &len) > 0)
|
|
return len;
|
|
return -1;
|
|
}
|
|
|
|
// must be called not locked
|
|
static void update_cache(struct demux_internal *in)
|
|
{
|
|
struct demuxer *demuxer = in->d_thread;
|
|
struct stream *stream = demuxer->stream;
|
|
|
|
// Don't lock while querying the stream.
|
|
double time_length = -1;
|
|
struct mp_tags *stream_metadata = NULL;
|
|
struct stream_cache_info stream_cache_info = {.size = -1};
|
|
|
|
if (demuxer->desc->control) {
|
|
demuxer->desc->control(demuxer, DEMUXER_CTRL_GET_TIME_LENGTH,
|
|
&time_length);
|
|
}
|
|
|
|
int64_t stream_size = stream_get_size(stream);
|
|
stream_control(stream, STREAM_CTRL_GET_METADATA, &stream_metadata);
|
|
stream_control(stream, STREAM_CTRL_GET_CACHE_INFO, &stream_cache_info);
|
|
|
|
pthread_mutex_lock(&in->lock);
|
|
in->time_length = time_length;
|
|
in->stream_size = stream_size;
|
|
in->stream_cache_info = stream_cache_info;
|
|
if (stream_metadata) {
|
|
talloc_free(in->stream_metadata);
|
|
in->stream_metadata = talloc_steal(in, stream_metadata);
|
|
in->d_buffer->events |= DEMUX_EVENT_METADATA;
|
|
}
|
|
pthread_mutex_unlock(&in->lock);
|
|
}
|
|
|
|
// must be called locked
|
|
static int cached_stream_control(struct demux_internal *in, int cmd, void *arg)
|
|
{
|
|
// If the cache is active, wake up the thread to possibly update cache state.
|
|
if (in->stream_cache_info.size >= 0) {
|
|
in->force_cache_update = true;
|
|
pthread_cond_signal(&in->wakeup);
|
|
}
|
|
|
|
switch (cmd) {
|
|
case STREAM_CTRL_GET_CACHE_INFO:
|
|
if (in->stream_cache_info.size < 0)
|
|
return STREAM_UNSUPPORTED;
|
|
*(struct stream_cache_info *)arg = in->stream_cache_info;
|
|
return STREAM_OK;
|
|
case STREAM_CTRL_GET_SIZE:
|
|
if (in->stream_size < 0)
|
|
return STREAM_UNSUPPORTED;
|
|
*(int64_t *)arg = in->stream_size;
|
|
return STREAM_OK;
|
|
case STREAM_CTRL_GET_BASE_FILENAME:
|
|
if (!in->stream_base_filename)
|
|
return STREAM_UNSUPPORTED;
|
|
*(char **)arg = talloc_strdup(NULL, in->stream_base_filename);
|
|
return STREAM_OK;
|
|
}
|
|
return STREAM_ERROR;
|
|
}
|
|
|
|
// must be called locked
|
|
static int cached_demux_control(struct demux_internal *in, int cmd, void *arg)
|
|
{
|
|
switch (cmd) {
|
|
case DEMUXER_CTRL_GET_TIME_LENGTH:
|
|
if (in->time_length < 0)
|
|
return DEMUXER_CTRL_NOTIMPL;
|
|
*(double *)arg = in->time_length;
|
|
return DEMUXER_CTRL_OK;
|
|
case DEMUXER_CTRL_STREAM_CTRL: {
|
|
struct demux_ctrl_stream_ctrl *c = arg;
|
|
int r = cached_stream_control(in, c->ctrl, c->arg);
|
|
if (r == STREAM_ERROR)
|
|
break;
|
|
c->res = r;
|
|
return DEMUXER_CTRL_OK;
|
|
}
|
|
case DEMUXER_CTRL_GET_BITRATE_STATS: {
|
|
double *rates = arg;
|
|
for (int n = 0; n < STREAM_TYPE_COUNT; n++)
|
|
rates[n] = -1;
|
|
for (int n = 0; n < in->num_streams; n++) {
|
|
struct demux_stream *ds = in->streams[n]->ds;
|
|
if (ds->selected && ds->bitrate >= 0)
|
|
rates[ds->type] = MPMAX(0, rates[ds->type]) + ds->bitrate;
|
|
}
|
|
return DEMUXER_CTRL_OK;
|
|
}
|
|
case DEMUXER_CTRL_GET_READER_STATE: {
|
|
struct demux_ctrl_reader_state *r = arg;
|
|
*r = (struct demux_ctrl_reader_state){
|
|
.eof = in->last_eof,
|
|
.ts_range = {MP_NOPTS_VALUE, MP_NOPTS_VALUE},
|
|
.ts_duration = -1,
|
|
};
|
|
int num_packets = 0;
|
|
for (int n = 0; n < in->num_streams; n++) {
|
|
struct demux_stream *ds = in->streams[n]->ds;
|
|
if (ds->active && !(!ds->head && ds->eof)) {
|
|
r->underrun |= !ds->head && !ds->eof;
|
|
r->ts_range[0] = MP_PTS_MAX(r->ts_range[0], ds->base_ts);
|
|
r->ts_range[1] = MP_PTS_MIN(r->ts_range[1], ds->last_ts);
|
|
num_packets += ds->packs;
|
|
}
|
|
}
|
|
r->idle = (in->idle && !r->underrun) || r->eof;
|
|
r->underrun &= !r->idle;
|
|
if (r->ts_range[0] != MP_NOPTS_VALUE && r->ts_range[1] != MP_NOPTS_VALUE)
|
|
r->ts_duration = MPMAX(0, r->ts_range[1] - r->ts_range[0]);
|
|
if (!num_packets || in->seeking)
|
|
r->ts_duration = 0;
|
|
r->ts_range[0] = MP_ADD_PTS(r->ts_range[0], in->ts_offset);
|
|
r->ts_range[1] = MP_ADD_PTS(r->ts_range[1], in->ts_offset);
|
|
return DEMUXER_CTRL_OK;
|
|
}
|
|
}
|
|
return DEMUXER_CTRL_DONTKNOW;
|
|
}
|
|
|
|
struct demux_control_args {
|
|
struct demuxer *demuxer;
|
|
int cmd;
|
|
void *arg;
|
|
int *r;
|
|
};
|
|
|
|
static void thread_demux_control(void *p)
|
|
{
|
|
struct demux_control_args *args = p;
|
|
struct demuxer *demuxer = args->demuxer;
|
|
int cmd = args->cmd;
|
|
void *arg = args->arg;
|
|
struct demux_internal *in = demuxer->in;
|
|
int r = DEMUXER_CTRL_NOTIMPL;
|
|
|
|
if (cmd == DEMUXER_CTRL_STREAM_CTRL) {
|
|
struct demux_ctrl_stream_ctrl *c = arg;
|
|
if (in->threading)
|
|
MP_VERBOSE(demuxer, "blocking for STREAM_CTRL %d\n", c->ctrl);
|
|
c->res = stream_control(demuxer->stream, c->ctrl, c->arg);
|
|
if (c->res != STREAM_UNSUPPORTED)
|
|
r = DEMUXER_CTRL_OK;
|
|
}
|
|
if (r != DEMUXER_CTRL_OK) {
|
|
if (in->threading)
|
|
MP_VERBOSE(demuxer, "blocking for DEMUXER_CTRL %d\n", cmd);
|
|
if (demuxer->desc->control)
|
|
r = demuxer->desc->control(demuxer->in->d_thread, cmd, arg);
|
|
}
|
|
|
|
*args->r = r;
|
|
}
|
|
|
|
int demux_control(demuxer_t *demuxer, int cmd, void *arg)
|
|
{
|
|
struct demux_internal *in = demuxer->in;
|
|
|
|
if (in->threading) {
|
|
pthread_mutex_lock(&in->lock);
|
|
int cr = cached_demux_control(in, cmd, arg);
|
|
pthread_mutex_unlock(&in->lock);
|
|
if (cr != DEMUXER_CTRL_DONTKNOW)
|
|
return cr;
|
|
}
|
|
|
|
int r = 0;
|
|
struct demux_control_args args = {demuxer, cmd, arg, &r};
|
|
demux_run_on_thread(demuxer, thread_demux_control, &args);
|
|
|
|
return r;
|
|
}
|
|
|
|
int demux_stream_control(demuxer_t *demuxer, int ctrl, void *arg)
|
|
{
|
|
struct demux_ctrl_stream_ctrl c = {ctrl, arg, STREAM_UNSUPPORTED};
|
|
demux_control(demuxer, DEMUXER_CTRL_STREAM_CTRL, &c);
|
|
return c.res;
|
|
}
|
|
|
|
void demux_run_on_thread(struct demuxer *demuxer, void (*fn)(void *), void *ctx)
|
|
{
|
|
struct demux_internal *in = demuxer->in;
|
|
assert(demuxer == in->d_user);
|
|
|
|
if (in->threading) {
|
|
MP_VERBOSE(in, "blocking on demuxer thread\n");
|
|
pthread_mutex_lock(&in->lock);
|
|
while (in->run_fn)
|
|
pthread_cond_wait(&in->wakeup, &in->lock);
|
|
in->run_fn = fn;
|
|
in->run_fn_arg = ctx;
|
|
pthread_cond_signal(&in->wakeup);
|
|
while (in->run_fn)
|
|
pthread_cond_wait(&in->wakeup, &in->lock);
|
|
pthread_mutex_unlock(&in->lock);
|
|
} else {
|
|
fn(ctx);
|
|
}
|
|
}
|
|
|
|
bool demux_cancel_test(struct demuxer *demuxer)
|
|
{
|
|
return mp_cancel_test(demuxer->stream->cancel);
|
|
}
|
|
|
|
struct demux_chapter *demux_copy_chapter_data(struct demux_chapter *c, int num)
|
|
{
|
|
struct demux_chapter *new = talloc_array(NULL, struct demux_chapter, num);
|
|
for (int n = 0; n < num; n++) {
|
|
new[n] = c[n];
|
|
new[n].metadata = mp_tags_dup(new, new[n].metadata);
|
|
}
|
|
return new;
|
|
}
|