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https://github.com/mpv-player/mpv
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c9e681fca3
Return failure to open file in one case that could lead to an infinite loop with broken Matroska files before.
2537 lines
90 KiB
C
2537 lines
90 KiB
C
/*
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* Matroska demuxer
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* Copyright (C) 2004 Aurelien Jacobs <aurel@gnuage.org>
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* Based on the one written by Ronald Bultje for gstreamer
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* and on demux_mkv.cpp from Moritz Bunkus.
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*
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* This file is part of MPlayer.
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*
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* MPlayer is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* MPlayer is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with MPlayer; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "config.h"
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#include <stdlib.h>
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#include <stdio.h>
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#include <ctype.h>
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#include <inttypes.h>
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#include <stdbool.h>
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#include "talloc.h"
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#include "options.h"
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#include "bstr.h"
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#include "stream/stream.h"
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#include "demuxer.h"
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#include "stheader.h"
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#include "ebml.h"
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#include "matroska.h"
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#include "demux_real.h"
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#include "mp_msg.h"
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#include "sub/sub.h"
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#include "libavutil/common.h"
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#ifdef CONFIG_QTX_CODECS
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#include "loader/qtx/qtxsdk/components.h"
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#endif
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#if CONFIG_ZLIB
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#include <zlib.h>
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#endif
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#include "libavutil/lzo.h"
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#include "ffmpeg_files/intreadwrite.h"
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#include "libavutil/avstring.h"
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static const unsigned char sipr_swaps[38][2] = {
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{0,63},{1,22},{2,44},{3,90},{5,81},{7,31},{8,86},{9,58},{10,36},{12,68},
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{13,39},{14,73},{15,53},{16,69},{17,57},{19,88},{20,34},{21,71},{24,46},
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{25,94},{26,54},{28,75},{29,50},{32,70},{33,92},{35,74},{38,85},{40,56},
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{42,87},{43,65},{45,59},{48,79},{49,93},{51,89},{55,95},{61,76},{67,83},
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{77,80}
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};
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// Map flavour to bytes per second
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#define SIPR_FLAVORS 4
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#define ATRC_FLAVORS 8
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#define COOK_FLAVORS 34
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static const int sipr_fl2bps[SIPR_FLAVORS] = { 813, 1062, 625, 2000 };
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static const int atrc_fl2bps[ATRC_FLAVORS] = {
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8269, 11714, 13092, 16538, 18260, 22050, 33075, 44100 };
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static const int cook_fl2bps[COOK_FLAVORS] = {
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1000, 1378, 2024, 2584, 4005, 5513, 8010, 4005, 750, 2498,
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4048, 5513, 8010, 11973, 8010, 2584, 4005, 2067, 2584, 2584,
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4005, 4005, 5513, 5513, 8010, 12059, 1550, 8010, 12059, 5513,
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12016, 16408, 22911, 33506
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};
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typedef struct mkv_content_encoding {
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uint64_t order, type, scope;
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uint64_t comp_algo;
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uint8_t *comp_settings;
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int comp_settings_len;
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} mkv_content_encoding_t;
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typedef struct mkv_track {
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int tnum;
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char *name;
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int id; // -aid / -sid / -vid option value
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char *codec_id;
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int ms_compat;
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char *language;
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int type;
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uint32_t v_width, v_height, v_dwidth, v_dheight;
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double v_frate;
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uint32_t a_formattag;
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uint32_t a_channels, a_bps;
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float a_sfreq;
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float a_osfreq;
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double default_duration;
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int default_track;
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unsigned char *private_data;
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unsigned int private_size;
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/* stuff for realmedia */
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int realmedia;
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int64_t rv_kf_base;
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int rv_kf_pts;
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double rv_pts; /* previous video timestamp */
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double ra_pts; /* previous audio timestamp */
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/** realaudio descrambling */
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int sub_packet_size; ///< sub packet size, per stream
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int sub_packet_h; ///< number of coded frames per block
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int coded_framesize; ///< coded frame size, per stream
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int audiopk_size; ///< audio packet size
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unsigned char *audio_buf; ///< place to store reordered audio data
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double *audio_timestamp; ///< timestamp for each audio packet
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int sub_packet_cnt; ///< number of subpacket already received
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int audio_filepos; ///< file position of first audio packet in block
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/* stuff for quicktime */
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int fix_i_bps;
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double qt_last_a_pts;
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int subtitle_type;
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/* generic content encoding support */
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mkv_content_encoding_t *encodings;
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int num_encodings;
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/* For VobSubs and SSA/ASS */
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sh_sub_t *sh_sub;
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} mkv_track_t;
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typedef struct mkv_index {
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int tnum;
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uint64_t timecode, filepos;
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} mkv_index_t;
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typedef struct mkv_demuxer {
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off_t segment_start;
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double duration, last_pts;
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uint64_t last_filepos;
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mkv_track_t **tracks;
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int num_tracks;
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uint64_t tc_scale, cluster_tc;
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uint64_t cluster_start;
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uint64_t cluster_size;
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uint64_t blockgroup_size;
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mkv_index_t *indexes;
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int num_indexes;
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off_t *parsed_pos;
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int num_parsed_pos;
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bool parsed_info;
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bool parsed_tracks;
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bool parsed_tags;
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bool parsed_chapters;
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bool parsed_attachments;
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struct cluster_pos {
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uint64_t filepos;
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uint64_t timecode;
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} *cluster_positions;
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int num_cluster_pos;
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uint64_t skip_to_timecode;
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int v_skip_to_keyframe, a_skip_to_keyframe;
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int num_audio_tracks;
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int num_video_tracks;
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} mkv_demuxer_t;
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#define REALHEADER_SIZE 16
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#define RVPROPERTIES_SIZE 34
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#define RAPROPERTIES4_SIZE 56
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#define RAPROPERTIES5_SIZE 70
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/**
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* \brief ensures there is space for at least one additional element
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* \param array array to grow
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* \param nelem current number of elements in array
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* \param elsize size of one array element
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*/
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static void *grow_array(void *array, int nelem, size_t elsize)
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{
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if (!(nelem & 31))
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array = realloc(array, (nelem + 32) * elsize);
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return array;
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}
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static bool is_parsed_header(struct mkv_demuxer *mkv_d, off_t pos)
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{
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int low = 0;
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int high = mkv_d->num_parsed_pos;
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while (high > low + 1) {
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int mid = high + low >> 1;
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if (mkv_d->parsed_pos[mid] > pos)
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high = mid;
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else
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low = mid;
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}
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if (mkv_d->num_parsed_pos && mkv_d->parsed_pos[low] == pos)
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return true;
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if (!(mkv_d->num_parsed_pos & 31))
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mkv_d->parsed_pos = talloc_realloc(mkv_d, mkv_d->parsed_pos, off_t,
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mkv_d->num_parsed_pos + 32);
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mkv_d->num_parsed_pos++;
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for (int i = mkv_d->num_parsed_pos - 1; i > low; i--)
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mkv_d->parsed_pos[i] = mkv_d->parsed_pos[i - 1];
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mkv_d->parsed_pos[low] = pos;
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return false;
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}
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static mkv_track_t *find_track_by_num(struct mkv_demuxer *d, int n, int type)
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{
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for (int i = 0; i < d->num_tracks; i++)
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if (d->tracks[i] != NULL && d->tracks[i]->type == type)
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if (d->tracks[i]->id == n)
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return d->tracks[i];
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return NULL;
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}
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static void add_cluster_position(mkv_demuxer_t *mkv_d, uint64_t filepos,
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uint64_t timecode)
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{
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if (mkv_d->indexes)
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return;
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int n = mkv_d->num_cluster_pos;
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if (n > 0 && mkv_d->cluster_positions[n-1].filepos >= filepos)
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return;
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mkv_d->cluster_positions =
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grow_array(mkv_d->cluster_positions, mkv_d->num_cluster_pos,
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sizeof(*mkv_d->cluster_positions));
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mkv_d->cluster_positions[mkv_d->num_cluster_pos++] = (struct cluster_pos){
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.filepos = filepos,
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.timecode = timecode,
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};
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}
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#define AAC_SYNC_EXTENSION_TYPE 0x02b7
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static int aac_get_sample_rate_index(uint32_t sample_rate)
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{
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static const int srates[] = {
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92017, 75132, 55426, 46009, 37566, 27713,
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23004, 18783, 13856, 11502, 9391, 0
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};
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int i = 0;
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while (sample_rate < srates[i])
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i++;
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return i;
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}
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static void demux_mkv_decode(mkv_track_t *track, uint8_t *src,
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uint8_t **dest, uint32_t *size, uint32_t type)
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{
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uint8_t *orig_src = src;
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*dest = src;
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for (int i = 0; i < track->num_encodings; i++) {
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struct mkv_content_encoding *enc = track->encodings + i;
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if (!(enc->scope & type))
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continue;
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if (src != *dest && src != orig_src)
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talloc_free(src);
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src = *dest; // output from last iteration is new source
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if (enc->comp_algo == 0) {
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#if CONFIG_ZLIB
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/* zlib encoded track */
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if (*size == 0)
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continue;
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z_stream zstream;
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zstream.zalloc = (alloc_func) 0;
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zstream.zfree = (free_func) 0;
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zstream.opaque = (voidpf) 0;
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if (inflateInit(&zstream) != Z_OK) {
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mp_tmsg(MSGT_DEMUX, MSGL_WARN,
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"[mkv] zlib initialization failed.\n");
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goto error;
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}
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zstream.next_in = (Bytef *) src;
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zstream.avail_in = *size;
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*dest = NULL;
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zstream.avail_out = *size;
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int result;
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do {
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*size += 4000;
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*dest = talloc_realloc_size(NULL, *dest, *size);
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zstream.next_out = (Bytef *) (*dest + zstream.total_out);
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result = inflate(&zstream, Z_NO_FLUSH);
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if (result != Z_OK && result != Z_STREAM_END) {
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mp_tmsg(MSGT_DEMUX, MSGL_WARN,
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"[mkv] zlib decompression failed.\n");
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talloc_free(*dest);
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*dest = NULL;
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inflateEnd(&zstream);
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goto error;
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}
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zstream.avail_out += 4000;
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} while (zstream.avail_out == 4000 && zstream.avail_in != 0
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&& result != Z_STREAM_END);
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*size = zstream.total_out;
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inflateEnd(&zstream);
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#endif
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} else if (enc->comp_algo == 2) {
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/* lzo encoded track */
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int out_avail;
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int dstlen = *size * 3;
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*dest = NULL;
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while (1) {
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int srclen = *size;
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*dest = talloc_realloc_size(NULL, *dest,
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dstlen + AV_LZO_OUTPUT_PADDING);
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out_avail = dstlen;
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int result = av_lzo1x_decode(*dest, &out_avail, src, &srclen);
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if (result == 0)
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break;
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if (!(result & AV_LZO_OUTPUT_FULL)) {
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mp_tmsg(MSGT_DEMUX, MSGL_WARN,
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"[mkv] lzo decompression failed.\n");
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talloc_free(*dest);
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*dest = NULL;
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goto error;
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}
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mp_msg(MSGT_DEMUX, MSGL_DBG2,
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"[mkv] lzo decompression buffer too small.\n");
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dstlen *= 2;
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}
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*size = dstlen - out_avail;
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} else if (enc->comp_algo == 3) {
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*dest = talloc_size(NULL, *size + enc->comp_settings_len);
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memcpy(*dest, enc->comp_settings, enc->comp_settings_len);
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memcpy(*dest + enc->comp_settings_len, src, *size);
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*size += enc->comp_settings_len;
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}
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}
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error:
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if (src != *dest && src != orig_src)
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talloc_free(src);
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}
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static int demux_mkv_read_info(demuxer_t *demuxer)
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{
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mkv_demuxer_t *mkv_d = demuxer->priv;
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stream_t *s = demuxer->stream;
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int res = 0;
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mkv_d->tc_scale = 1000000;
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mkv_d->duration = 0;
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struct ebml_info info = {};
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struct ebml_parse_ctx parse_ctx = {};
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if (ebml_read_element(s, &parse_ctx, &info, &ebml_info_desc) < 0)
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return -1;
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if (info.n_timecode_scale) {
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mkv_d->tc_scale = info.timecode_scale;
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mp_msg(MSGT_DEMUX, MSGL_V,
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"[mkv] | + timecode scale: %" PRIu64 "\n", mkv_d->tc_scale);
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}
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if (info.n_duration) {
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mkv_d->duration = info.duration * mkv_d->tc_scale / 1e9;
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mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] | + duration: %.3fs\n",
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mkv_d->duration);
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}
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if (info.n_segment_uid) {
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int len = info.segment_uid.len;
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if (len != sizeof(demuxer->matroska_data.segment_uid)) {
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mp_msg(MSGT_DEMUX, MSGL_INFO,
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"[mkv] segment uid invalid length %d\n", len);
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} else {
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memcpy(demuxer->matroska_data.segment_uid, info.segment_uid.start,
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len);
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mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] | + segment uid");
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for (int i = 0; i < len; i++)
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mp_msg(MSGT_DEMUX, MSGL_V, " %02x",
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demuxer->matroska_data.segment_uid[i]);
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mp_msg(MSGT_DEMUX, MSGL_V, "\n");
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}
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}
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if (demuxer->params && demuxer->params->matroska_wanted_uids) {
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unsigned char (*uids)[16] = demuxer->params->matroska_wanted_uids;
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if (!info.n_segment_uid)
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uids = NULL;
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for (int i = 0; i < MP_TALLOC_ELEMS(uids); i++) {
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if (!memcmp(info.segment_uid.start, uids[i], 16))
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goto out;
|
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}
|
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mp_tmsg(MSGT_DEMUX, MSGL_INFO,
|
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"[mkv] This is not one of the wanted files. "
|
|
"Stopping attempt to open.\n");
|
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res = -2;
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}
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out:
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talloc_free(parse_ctx.talloc_ctx);
|
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return res;
|
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}
|
|
|
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static void parse_trackencodings(struct demuxer *demuxer,
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struct mkv_track *track,
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struct ebml_content_encodings *encodings)
|
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{
|
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// initial allocation to be a non-NULL context before realloc
|
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mkv_content_encoding_t *ce = talloc_size(track, 1);
|
|
|
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for (int n_enc = 0; n_enc < encodings->n_content_encoding; n_enc++) {
|
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struct ebml_content_encoding *enc = encodings->content_encoding + n_enc;
|
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struct mkv_content_encoding e = {};
|
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e.order = enc->content_encoding_order;
|
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if (enc->n_content_encoding_scope)
|
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e.scope = enc->content_encoding_scope;
|
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else
|
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e.scope = 1;
|
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e.type = enc->content_encoding_type;
|
|
|
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if (enc->n_content_compression) {
|
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struct ebml_content_compression *z = &enc->content_compression;
|
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e.comp_algo = z->content_comp_algo;
|
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if (z->n_content_comp_settings) {
|
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int sz = z->content_comp_settings.len;
|
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e.comp_settings = talloc_size(ce, sz);
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memcpy(e.comp_settings, z->content_comp_settings.start, sz);
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e.comp_settings_len = sz;
|
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}
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}
|
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|
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if (e.type == 1) {
|
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mp_tmsg(MSGT_DEMUX, MSGL_WARN, "[mkv] Track "
|
|
"number %u has been encrypted and "
|
|
"decryption has not yet been\n"
|
|
"[mkv] implemented. Skipping track.\n",
|
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track->tnum);
|
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} else if (e.type != 0) {
|
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mp_tmsg(MSGT_DEMUX, MSGL_WARN,
|
|
"[mkv] Unknown content encoding type for "
|
|
"track %u. Skipping track.\n",
|
|
track->tnum);
|
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} else if (e.comp_algo != 0 && e.comp_algo != 2 && e.comp_algo != 3) {
|
|
mp_tmsg(MSGT_DEMUX, MSGL_WARN,
|
|
"[mkv] Track %u has been compressed with "
|
|
"an unknown/unsupported compression\n"
|
|
"[mkv] algorithm (%" PRIu64 "). Skipping track.\n",
|
|
track->tnum, e.comp_algo);
|
|
}
|
|
#if !CONFIG_ZLIB
|
|
else if (e.comp_algo == 0) {
|
|
mp_tmsg(MSGT_DEMUX, MSGL_WARN,
|
|
"[mkv] Track %u was compressed with zlib "
|
|
"but mplayer has not been compiled\n"
|
|
"[mkv] with support for zlib compression. "
|
|
"Skipping track.\n",
|
|
track->tnum);
|
|
}
|
|
#endif
|
|
int i;
|
|
for (i = 0; i < n_enc; i++)
|
|
if (e.order >= ce[i].order)
|
|
break;
|
|
ce = talloc_realloc_size(track, ce, (n_enc + 1) * sizeof(*ce));
|
|
memmove(ce + i + 1, ce + i, (n_enc - i) * sizeof(*ce));
|
|
memcpy(ce + i, &e, sizeof(e));
|
|
}
|
|
|
|
track->encodings = ce;
|
|
track->num_encodings = encodings->n_content_encoding;
|
|
}
|
|
|
|
static void parse_trackaudio(struct demuxer *demuxer, struct mkv_track *track,
|
|
struct ebml_audio *audio)
|
|
{
|
|
if (audio->n_sampling_frequency) {
|
|
track->a_sfreq = audio->sampling_frequency;
|
|
mp_msg(MSGT_DEMUX, MSGL_V,
|
|
"[mkv] | + Sampling frequency: %f\n", track->a_sfreq);
|
|
} else
|
|
track->a_sfreq = 8000;
|
|
if (audio->n_output_sampling_frequency) {
|
|
track->a_osfreq = audio->output_sampling_frequency;
|
|
mp_msg(MSGT_DEMUX, MSGL_V,
|
|
"[mkv] | + Output sampling frequency: %f\n", track->a_osfreq);
|
|
} else
|
|
track->a_osfreq = track->a_sfreq;
|
|
if (audio->n_bit_depth) {
|
|
track->a_bps = audio->bit_depth;
|
|
mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] | + Bit depth: %u\n",
|
|
track->a_bps);
|
|
}
|
|
if (audio->n_channels) {
|
|
track->a_channels = audio->channels;
|
|
mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] | + Channels: %u\n",
|
|
track->a_channels);
|
|
} else
|
|
track->a_channels = 1;
|
|
}
|
|
|
|
static void parse_trackvideo(struct demuxer *demuxer, struct mkv_track *track,
|
|
struct ebml_video *video)
|
|
{
|
|
if (video->n_frame_rate) {
|
|
track->v_frate = video->frame_rate;
|
|
mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] | + Frame rate: %f\n",
|
|
track->v_frate);
|
|
if (track->v_frate > 0)
|
|
track->default_duration = 1 / track->v_frate;
|
|
}
|
|
if (video->n_display_width) {
|
|
track->v_dwidth = video->display_width;
|
|
mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] | + Display width: %u\n",
|
|
track->v_dwidth);
|
|
}
|
|
if (video->n_display_height) {
|
|
track->v_dheight = video->display_height;
|
|
mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] | + Display height: %u\n",
|
|
track->v_dheight);
|
|
}
|
|
if (video->n_pixel_width) {
|
|
track->v_width = video->pixel_width;
|
|
mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] | + Pixel width: %u\n",
|
|
track->v_width);
|
|
}
|
|
if (video->n_pixel_height) {
|
|
track->v_height = video->pixel_height;
|
|
mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] | + Pixel height: %u\n",
|
|
track->v_height);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* \brief free any data associated with given track
|
|
* \param track track of which to free data
|
|
*/
|
|
static void demux_mkv_free_trackentry(mkv_track_t *track)
|
|
{
|
|
free(track->audio_buf);
|
|
free(track->audio_timestamp);
|
|
talloc_free(track);
|
|
}
|
|
|
|
static void parse_trackentry(struct demuxer *demuxer,
|
|
struct ebml_track_entry *entry)
|
|
{
|
|
mkv_demuxer_t *mkv_d = (mkv_demuxer_t *) demuxer->priv;
|
|
struct mkv_track *track = talloc_zero_size(NULL, sizeof(*track));
|
|
|
|
track->tnum = entry->track_number;
|
|
if (track->tnum)
|
|
mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] | + Track number: %u\n",
|
|
track->tnum);
|
|
else
|
|
mp_msg(MSGT_DEMUX, MSGL_ERR, "[mkv] Missing track number!\n");
|
|
|
|
if (entry->n_name) {
|
|
track->name = talloc_strndup(track, entry->name.start,
|
|
entry->name.len);
|
|
mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] | + Name: %s\n",
|
|
track->name);
|
|
}
|
|
|
|
track->type = entry->track_type;
|
|
mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] | + Track type: ");
|
|
switch (track->type) {
|
|
case MATROSKA_TRACK_AUDIO:
|
|
mp_msg(MSGT_DEMUX, MSGL_V, "Audio\n");
|
|
break;
|
|
case MATROSKA_TRACK_VIDEO:
|
|
mp_msg(MSGT_DEMUX, MSGL_V, "Video\n");
|
|
break;
|
|
case MATROSKA_TRACK_SUBTITLE:
|
|
mp_msg(MSGT_DEMUX, MSGL_V, "Subtitle\n");
|
|
break;
|
|
default:
|
|
mp_msg(MSGT_DEMUX, MSGL_V, "unknown\n");
|
|
break;
|
|
}
|
|
|
|
if (entry->n_audio) {
|
|
mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] | + Audio track\n");
|
|
parse_trackaudio(demuxer, track, &entry->audio);
|
|
}
|
|
|
|
if (entry->n_video) {
|
|
mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] | + Video track\n");
|
|
parse_trackvideo(demuxer, track, &entry->video);
|
|
}
|
|
|
|
if (entry->n_codec_id) {
|
|
track->codec_id = talloc_strndup(track, entry->codec_id.start,
|
|
entry->codec_id.len);
|
|
if (!strcmp(track->codec_id, MKV_V_MSCOMP)
|
|
|| !strcmp(track->codec_id, MKV_A_ACM))
|
|
track->ms_compat = 1;
|
|
else if (!strcmp(track->codec_id, MKV_S_VOBSUB))
|
|
track->subtitle_type = 'v';
|
|
else if (!strcmp(track->codec_id, MKV_S_TEXTSSA)
|
|
|| !strcmp(track->codec_id, MKV_S_TEXTASS)
|
|
|| !strcmp(track->codec_id, MKV_S_SSA)
|
|
|| !strcmp(track->codec_id, MKV_S_ASS))
|
|
track->subtitle_type = 'a';
|
|
else if (!strcmp(track->codec_id, MKV_S_TEXTASCII)
|
|
|| !strcmp(track->codec_id, MKV_S_TEXTUTF8))
|
|
track->subtitle_type = 't';
|
|
else if (!strcmp(track->codec_id, MKV_S_PGS))
|
|
track->subtitle_type = 'p';
|
|
mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] | + Codec ID: %s\n",
|
|
track->codec_id);
|
|
} else
|
|
mp_msg(MSGT_DEMUX, MSGL_ERR, "[mkv] Missing codec ID!\n");
|
|
|
|
if (entry->n_codec_private) {
|
|
int len = entry->codec_private.len;
|
|
track->private_data = talloc_size(track, len + AV_LZO_INPUT_PADDING);
|
|
memcpy(track->private_data, entry->codec_private.start, len);
|
|
track->private_size = len;
|
|
mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] | + CodecPrivate, length %u\n",
|
|
track->private_size);
|
|
}
|
|
|
|
if (entry->n_language) {
|
|
track->language = talloc_strndup(track, entry->language.start,
|
|
entry->language.len);
|
|
mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] | + Language: %s\n",
|
|
track->language);
|
|
} else
|
|
track->language = talloc_strdup(track, "eng");
|
|
|
|
if (entry->n_flag_default) {
|
|
track->default_track = entry->flag_default;
|
|
mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] | + Default flag: %u\n",
|
|
track->default_track);
|
|
} else
|
|
track->default_track = 1;
|
|
|
|
if (entry->n_default_duration) {
|
|
track->default_duration = entry->default_duration / 1e9;
|
|
if (entry->default_duration == 0)
|
|
mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] | + Default duration: 0");
|
|
else {
|
|
if (!track->v_frate)
|
|
track->v_frate = 1e9 / entry->default_duration;
|
|
mp_msg(MSGT_DEMUX, MSGL_V,
|
|
"[mkv] | + Default duration: %.3fms ( = %.3f fps)\n",
|
|
entry->default_duration / 1000000.0, track->v_frate);
|
|
}
|
|
}
|
|
|
|
if (entry->n_content_encodings)
|
|
parse_trackencodings(demuxer, track, &entry->content_encodings);
|
|
|
|
mkv_d->tracks[mkv_d->num_tracks++] = track;
|
|
}
|
|
|
|
static int demux_mkv_read_tracks(demuxer_t *demuxer)
|
|
{
|
|
mkv_demuxer_t *mkv_d = (mkv_demuxer_t *) demuxer->priv;
|
|
stream_t *s = demuxer->stream;
|
|
|
|
struct ebml_tracks tracks = {};
|
|
struct ebml_parse_ctx parse_ctx = {};
|
|
if (ebml_read_element(s, &parse_ctx, &tracks, &ebml_tracks_desc) < 0)
|
|
return -1;
|
|
|
|
mkv_d->tracks = talloc_size(mkv_d,
|
|
tracks.n_track_entry * sizeof(*mkv_d->tracks));
|
|
for (int i = 0; i < tracks.n_track_entry; i++) {
|
|
mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] | + a track...\n");
|
|
parse_trackentry(demuxer, &tracks.track_entry[i]);
|
|
}
|
|
talloc_free(parse_ctx.talloc_ctx);
|
|
return 0;
|
|
}
|
|
|
|
static int demux_mkv_read_cues(demuxer_t *demuxer)
|
|
{
|
|
mkv_demuxer_t *mkv_d = (mkv_demuxer_t *) demuxer->priv;
|
|
stream_t *s = demuxer->stream;
|
|
|
|
if (index_mode == 0 || index_mode == 2) {
|
|
ebml_read_skip(s, NULL);
|
|
return 0;
|
|
}
|
|
|
|
mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] /---- [ parsing cues ] -----------\n");
|
|
struct ebml_cues cues = {};
|
|
struct ebml_parse_ctx parse_ctx = {};
|
|
if (ebml_read_element(s, &parse_ctx, &cues, &ebml_cues_desc) < 0)
|
|
return -1;
|
|
for (int i = 0; i < cues.n_cue_point; i++) {
|
|
struct ebml_cue_point *cuepoint = &cues.cue_point[i];
|
|
if (cuepoint->n_cue_time != 1 || !cuepoint->n_cue_track_positions) {
|
|
mp_msg(MSGT_DEMUX, MSGL_WARN, "[mkv] Malformed CuePoint element\n");
|
|
continue;
|
|
}
|
|
uint64_t time = cuepoint->cue_time;
|
|
for (int i = 0; i < cuepoint->n_cue_track_positions; i++) {
|
|
struct ebml_cue_track_positions *trackpos =
|
|
&cuepoint->cue_track_positions[i];
|
|
uint64_t track = trackpos->cue_track;
|
|
uint64_t pos = trackpos->cue_cluster_position;
|
|
mkv_d->indexes =
|
|
grow_array(mkv_d->indexes, mkv_d->num_indexes,
|
|
sizeof(mkv_index_t));
|
|
mkv_d->indexes[mkv_d->num_indexes].tnum = track;
|
|
mkv_d->indexes[mkv_d->num_indexes].timecode = time;
|
|
mkv_d->indexes[mkv_d->num_indexes].filepos =
|
|
mkv_d->segment_start + pos;
|
|
mp_msg(MSGT_DEMUX, MSGL_DBG2,
|
|
"[mkv] |+ found cue point for track %" PRIu64
|
|
": timecode %" PRIu64 ", filepos: %" PRIu64 "\n", track,
|
|
time, mkv_d->segment_start + pos);
|
|
mkv_d->num_indexes++;
|
|
}
|
|
}
|
|
|
|
mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] \\---- [ parsing cues ] -----------\n");
|
|
talloc_free(parse_ctx.talloc_ctx);
|
|
return 0;
|
|
}
|
|
|
|
static int demux_mkv_read_chapters(struct demuxer *demuxer)
|
|
{
|
|
struct MPOpts *opts = demuxer->opts;
|
|
stream_t *s = demuxer->stream;
|
|
|
|
mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] /---- [ parsing chapters ] ---------\n");
|
|
struct ebml_chapters file_chapters = {};
|
|
struct ebml_parse_ctx parse_ctx = {};
|
|
if (ebml_read_element(s, &parse_ctx, &file_chapters,
|
|
&ebml_chapters_desc) < 0)
|
|
return -1;
|
|
|
|
int selected_edition = 0;
|
|
int num_editions = file_chapters.n_edition_entry;
|
|
struct ebml_edition_entry *editions = file_chapters.edition_entry;
|
|
if (opts->edition_id >= 0 && opts->edition_id < num_editions) {
|
|
selected_edition = opts->edition_id;
|
|
mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] User-specified edition: %d\n",
|
|
selected_edition);
|
|
} else
|
|
for (int i = 0; i < num_editions; i++)
|
|
if (editions[i].edition_flag_default) {
|
|
selected_edition = i;
|
|
mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] Default edition: %d\n", i);
|
|
break;
|
|
}
|
|
struct matroska_chapter *m_chapters = NULL;
|
|
if (editions[selected_edition].edition_flag_ordered) {
|
|
int count = editions[selected_edition].n_chapter_atom;
|
|
m_chapters = talloc_array_ptrtype(demuxer, m_chapters, count);
|
|
demuxer->matroska_data.ordered_chapters = m_chapters;
|
|
demuxer->matroska_data.num_ordered_chapters = count;
|
|
}
|
|
|
|
for (int idx = 0; idx < num_editions; idx++) {
|
|
mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] New edition %d\n", idx);
|
|
int warn_level = idx == selected_edition ? MSGL_WARN : MSGL_V;
|
|
if (editions[idx].n_edition_flag_default)
|
|
mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] Default edition flag: %"PRIu64
|
|
"\n", editions[idx].edition_flag_default);
|
|
if (editions[idx].n_edition_flag_ordered)
|
|
mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] Ordered chapter flag: %"PRIu64
|
|
"\n", editions[idx].edition_flag_ordered);
|
|
for (int i = 0; i < editions[idx].n_chapter_atom; i++) {
|
|
struct ebml_chapter_atom *ca = editions[idx].chapter_atom + i;
|
|
struct matroska_chapter chapter = { };
|
|
struct bstr name = { "(unnamed)", 9 };
|
|
|
|
if (!ca->n_chapter_time_start)
|
|
mp_msg(MSGT_DEMUX, warn_level,
|
|
"[mkv] Chapter lacks start time\n");
|
|
chapter.start = ca->chapter_time_start;
|
|
chapter.end = ca->chapter_time_end;
|
|
|
|
if (ca->n_chapter_display) {
|
|
if (ca->n_chapter_display > 1)
|
|
mp_msg(MSGT_DEMUX, warn_level, "[mkv] Multiple chapter "
|
|
"names not supported, picking first\n");
|
|
if (!ca->chapter_display[0].n_chap_string)
|
|
mp_msg(MSGT_DEMUX, warn_level, "[mkv] Malformed chapter "
|
|
"name entry\n");
|
|
else
|
|
name = ca->chapter_display[0].chap_string;
|
|
}
|
|
|
|
if (ca->n_chapter_segment_uid) {
|
|
chapter.has_segment_uid = true;
|
|
int len = ca->chapter_segment_uid.len;
|
|
if (len != sizeof(chapter.segment_uid))
|
|
mp_msg(MSGT_DEMUX, warn_level,
|
|
"[mkv] Chapter segment uid bad length %d\n", len);
|
|
else if (ca->n_chapter_segment_edition_uid) {
|
|
mp_tmsg(MSGT_DEMUX, warn_level, "[mkv] Warning: "
|
|
"unsupported edition recursion in chapter; "
|
|
"will skip on playback!\n");
|
|
} else {
|
|
memcpy(chapter.segment_uid, ca->chapter_segment_uid.start,
|
|
len);
|
|
mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] Chapter segment uid ");
|
|
for (int i = 0; i < len; i++)
|
|
mp_msg(MSGT_DEMUX, MSGL_V, "%02x ",
|
|
chapter.segment_uid[i]);
|
|
mp_msg(MSGT_DEMUX, MSGL_V, "\n");
|
|
}
|
|
}
|
|
|
|
mp_msg(MSGT_DEMUX, MSGL_V,
|
|
"[mkv] Chapter %u from %02d:%02d:%02d.%03d "
|
|
"to %02d:%02d:%02d.%03d, %.*s\n", i,
|
|
(int) (chapter.start / 60 / 60 / 1000000000),
|
|
(int) ((chapter.start / 60 / 1000000000) % 60),
|
|
(int) ((chapter.start / 1000000000) % 60),
|
|
(int) (chapter.start % 1000000000),
|
|
(int) (chapter.end / 60 / 60 / 1000000000),
|
|
(int) ((chapter.end / 60 / 1000000000) % 60),
|
|
(int) ((chapter.end / 1000000000) % 60),
|
|
(int) (chapter.end % 1000000000),
|
|
BSTR_P(name));
|
|
|
|
if (idx == selected_edition){
|
|
demuxer_add_chapter(demuxer, name, chapter.start, chapter.end);
|
|
if (editions[idx].edition_flag_ordered) {
|
|
chapter.name = talloc_strndup(m_chapters, name.start,
|
|
name.len);
|
|
m_chapters[i] = chapter;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if (num_editions > 1)
|
|
mp_msg(MSGT_DEMUX, MSGL_INFO,
|
|
"[mkv] Found %d editions, will play #%d (first is 0).\n",
|
|
num_editions, selected_edition);
|
|
|
|
talloc_free(parse_ctx.talloc_ctx);
|
|
mp_msg(MSGT_DEMUX, MSGL_V,
|
|
"[mkv] \\---- [ parsing chapters ] ---------\n");
|
|
return 0;
|
|
}
|
|
|
|
static int demux_mkv_read_tags(demuxer_t *demuxer)
|
|
{
|
|
stream_t *s = demuxer->stream;
|
|
|
|
struct ebml_parse_ctx parse_ctx = {};
|
|
struct ebml_tags tags = {};
|
|
if (ebml_read_element(s, &parse_ctx, &tags, &ebml_tags_desc) < 0)
|
|
return -1;
|
|
|
|
for (int i = 0; i < tags.n_tag; i++) {
|
|
struct ebml_tag tag = tags.tag[i];
|
|
if (tag.targets.target_track_uid || tag.targets.target_edition_uid ||
|
|
tag.targets.target_chapter_uid || tag.targets.target_attachment_uid)
|
|
continue;
|
|
|
|
for (int j = 0; j < tag.n_simple_tag; j++)
|
|
demux_info_add_bstr(demuxer, tag.simple_tag[j].tag_name, tag.simple_tag[j].tag_string);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int demux_mkv_read_attachments(demuxer_t *demuxer)
|
|
{
|
|
stream_t *s = demuxer->stream;
|
|
|
|
mp_msg(MSGT_DEMUX, MSGL_V,
|
|
"[mkv] /---- [ parsing attachments ] ---------\n");
|
|
|
|
struct ebml_attachments attachments = {};
|
|
struct ebml_parse_ctx parse_ctx = {};
|
|
if (ebml_read_element(s, &parse_ctx, &attachments,
|
|
&ebml_attachments_desc) < 0)
|
|
return -1;
|
|
|
|
for (int i = 0; i < attachments.n_attached_file; i++) {
|
|
struct ebml_attached_file *attachment = &attachments.attached_file[i];
|
|
if (!attachment->n_file_name || !attachment->n_file_mime_type
|
|
|| !attachment->n_file_data) {
|
|
mp_msg(MSGT_DEMUX, MSGL_WARN, "[mkv] Malformed attachment\n");
|
|
continue;
|
|
}
|
|
struct bstr name = attachment->file_name;
|
|
struct bstr mime = attachment->file_mime_type;
|
|
demuxer_add_attachment(demuxer, name, mime, attachment->file_data);
|
|
mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] Attachment: %.*s, %.*s, %zu bytes\n",
|
|
BSTR_P(name), BSTR_P(mime), attachment->file_data.len);
|
|
}
|
|
|
|
talloc_free(parse_ctx.talloc_ctx);
|
|
mp_msg(MSGT_DEMUX, MSGL_V,
|
|
"[mkv] \\---- [ parsing attachments ] ---------\n");
|
|
return 0;
|
|
}
|
|
|
|
static int read_header_element(struct demuxer *demuxer, uint32_t id,
|
|
off_t at_filepos);
|
|
|
|
static int demux_mkv_read_seekhead(demuxer_t *demuxer)
|
|
{
|
|
struct mkv_demuxer *mkv_d = demuxer->priv;
|
|
struct stream *s = demuxer->stream;
|
|
int res = 0;
|
|
struct ebml_seek_head seekhead = {};
|
|
struct ebml_parse_ctx parse_ctx = {};
|
|
|
|
mp_msg(MSGT_DEMUX, MSGL_V,
|
|
"[mkv] /---- [ parsing seek head ] ---------\n");
|
|
if (ebml_read_element(s, &parse_ctx, &seekhead, &ebml_seek_head_desc) < 0) {
|
|
res = -1;
|
|
goto out;
|
|
}
|
|
/* off now holds the position of the next element after the seek head. */
|
|
off_t off = stream_tell(s);
|
|
for (int i = 0; i < seekhead.n_seek; i++) {
|
|
struct ebml_seek *seek = &seekhead.seek[i];
|
|
if (seek->n_seek_id != 1 || seek->n_seek_position != 1) {
|
|
mp_msg(MSGT_DEMUX, MSGL_WARN, "[mkv] Invalid SeekHead entry\n");
|
|
continue;
|
|
}
|
|
uint64_t pos = seek->seek_position + mkv_d->segment_start;
|
|
if (pos >= demuxer->movi_end) {
|
|
mp_msg(MSGT_DEMUX, MSGL_WARN, "[mkv] SeekHead position beyond "
|
|
"end of file - incomplete file?\n");
|
|
continue;
|
|
}
|
|
int r = read_header_element(demuxer, seek->seek_id, pos);
|
|
if (r <= -2) {
|
|
res = r;
|
|
goto out;
|
|
}
|
|
}
|
|
if (!stream_seek(s, off)) {
|
|
mp_msg(MSGT_DEMUX, MSGL_ERR, "[mkv] Couldn't seek back after "
|
|
"SeekHead??\n");
|
|
res = -1;
|
|
}
|
|
out:
|
|
mp_msg(MSGT_DEMUX, MSGL_V,
|
|
"[mkv] \\---- [ parsing seek head ] ---------\n");
|
|
talloc_free(parse_ctx.talloc_ctx);
|
|
return res;
|
|
}
|
|
|
|
static bool seek_pos_id(struct stream *s, off_t pos, uint32_t id)
|
|
{
|
|
if (!stream_seek(s, pos)) {
|
|
mp_msg(MSGT_DEMUX, MSGL_WARN, "[mkv] Failed to seek in file\n");
|
|
return false;
|
|
}
|
|
if (ebml_read_id(s, NULL) != id) {
|
|
mp_msg(MSGT_DEMUX, MSGL_WARN, "[mkv] Expected element not found\n");
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
static int read_header_element(struct demuxer *demuxer, uint32_t id,
|
|
off_t at_filepos)
|
|
{
|
|
struct mkv_demuxer *mkv_d = demuxer->priv;
|
|
stream_t *s = demuxer->stream;
|
|
off_t pos = stream_tell(s) - 4;
|
|
int res = 1;
|
|
|
|
switch(id) {
|
|
case MATROSKA_ID_INFO:
|
|
if (mkv_d->parsed_info)
|
|
break;
|
|
if (at_filepos && !seek_pos_id(s, at_filepos, id))
|
|
return -1;
|
|
mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] |+ segment information...\n");
|
|
mkv_d->parsed_info = true;
|
|
return demux_mkv_read_info(demuxer);
|
|
|
|
case MATROSKA_ID_TRACKS:
|
|
if (mkv_d->parsed_tracks)
|
|
break;
|
|
if (at_filepos && !seek_pos_id(s, at_filepos, id))
|
|
return -1;
|
|
mkv_d->parsed_tracks = true;
|
|
mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] |+ segment tracks...\n");
|
|
return demux_mkv_read_tracks(demuxer);
|
|
|
|
case MATROSKA_ID_CUES:
|
|
if (is_parsed_header(mkv_d, pos))
|
|
break;
|
|
if (at_filepos && !seek_pos_id(s, at_filepos, id))
|
|
return -1;
|
|
return demux_mkv_read_cues(demuxer);
|
|
|
|
case MATROSKA_ID_TAGS:
|
|
if (mkv_d->parsed_tags)
|
|
break;
|
|
if (at_filepos && !seek_pos_id(s, at_filepos, id))
|
|
return -1;
|
|
mkv_d->parsed_tags = true;
|
|
return demux_mkv_read_tags(demuxer);
|
|
|
|
case MATROSKA_ID_SEEKHEAD:
|
|
if (is_parsed_header(mkv_d, pos))
|
|
break;
|
|
if (at_filepos && !seek_pos_id(s, at_filepos, id))
|
|
return -1;
|
|
return demux_mkv_read_seekhead(demuxer);
|
|
|
|
case MATROSKA_ID_CHAPTERS:
|
|
if (mkv_d->parsed_chapters)
|
|
break;
|
|
if (at_filepos && !seek_pos_id(s, at_filepos, id))
|
|
return -1;
|
|
mkv_d->parsed_chapters = true;
|
|
return demux_mkv_read_chapters(demuxer);
|
|
|
|
case MATROSKA_ID_ATTACHMENTS:
|
|
if (mkv_d->parsed_attachments)
|
|
break;
|
|
if (at_filepos && !seek_pos_id(s, at_filepos, id))
|
|
return -1;
|
|
mkv_d->parsed_attachments = true;
|
|
return demux_mkv_read_attachments(demuxer);
|
|
|
|
case EBML_ID_VOID:
|
|
break;
|
|
|
|
default:
|
|
res = 2;
|
|
}
|
|
if (!at_filepos)
|
|
ebml_read_skip(s, NULL);
|
|
return res;
|
|
}
|
|
|
|
|
|
|
|
static int demux_mkv_open_video(demuxer_t *demuxer, mkv_track_t *track,
|
|
int vid);
|
|
static int demux_mkv_open_audio(demuxer_t *demuxer, mkv_track_t *track,
|
|
int aid);
|
|
static int demux_mkv_open_sub(demuxer_t *demuxer, mkv_track_t *track,
|
|
int sid);
|
|
|
|
static void display_create_tracks(demuxer_t *demuxer)
|
|
{
|
|
mkv_demuxer_t *mkv_d = (mkv_demuxer_t *) demuxer->priv;
|
|
int i, vid = 0, aid = 0, sid = 0;
|
|
|
|
for (i = 0; i < mkv_d->num_tracks; i++) {
|
|
char *type = "unknown", str[32];
|
|
*str = '\0';
|
|
switch (mkv_d->tracks[i]->type) {
|
|
case MATROSKA_TRACK_VIDEO:
|
|
type = "video";
|
|
mkv_d->tracks[i]->id = -1;
|
|
if (vid == MAX_V_STREAMS)
|
|
break;
|
|
mkv_d->tracks[i]->id = vid;
|
|
demux_mkv_open_video(demuxer, mkv_d->tracks[i], vid);
|
|
if (mkv_d->tracks[i]->name)
|
|
mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_VID_%d_NAME=%s\n", vid,
|
|
mkv_d->tracks[i]->name);
|
|
sprintf(str, "-vid %u", vid++);
|
|
break;
|
|
case MATROSKA_TRACK_AUDIO:
|
|
type = "audio";
|
|
mkv_d->tracks[i]->id = -1;
|
|
if (aid == MAX_A_STREAMS)
|
|
break;
|
|
mkv_d->tracks[i]->id = aid;
|
|
demux_mkv_open_audio(demuxer, mkv_d->tracks[i], aid);
|
|
if (mkv_d->tracks[i]->name)
|
|
mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_AID_%d_NAME=%s\n", aid,
|
|
mkv_d->tracks[i]->name);
|
|
mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_AID_%d_LANG=%s\n", aid,
|
|
mkv_d->tracks[i]->language);
|
|
sprintf(str, "-aid %u, -alang %.5s", aid++,
|
|
mkv_d->tracks[i]->language);
|
|
break;
|
|
case MATROSKA_TRACK_SUBTITLE:
|
|
type = "subtitles";
|
|
mkv_d->tracks[i]->id = -1;
|
|
if (sid == MAX_S_STREAMS)
|
|
break;
|
|
mkv_d->tracks[i]->id = sid;
|
|
demux_mkv_open_sub(demuxer, mkv_d->tracks[i], sid);
|
|
if (mkv_d->tracks[i]->name)
|
|
mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_SID_%d_NAME=%s\n", sid,
|
|
mkv_d->tracks[i]->name);
|
|
mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_SID_%d_LANG=%s\n", sid,
|
|
mkv_d->tracks[i]->language);
|
|
sprintf(str, "-sid %u, -slang %.5s", sid++,
|
|
mkv_d->tracks[i]->language);
|
|
break;
|
|
}
|
|
if (mkv_d->tracks[i]->name)
|
|
mp_tmsg(MSGT_DEMUX, MSGL_INFO,
|
|
"[mkv] Track ID %u: %s (%s) \"%s\", %s\n",
|
|
mkv_d->tracks[i]->tnum, type, mkv_d->tracks[i]->codec_id,
|
|
mkv_d->tracks[i]->name, str);
|
|
else
|
|
mp_tmsg(MSGT_DEMUX, MSGL_INFO, "[mkv] Track ID %u: %s (%s), %s\n",
|
|
mkv_d->tracks[i]->tnum, type, mkv_d->tracks[i]->codec_id,
|
|
str);
|
|
}
|
|
mkv_d->num_audio_tracks = aid;
|
|
mkv_d->num_video_tracks = vid;
|
|
}
|
|
|
|
typedef struct {
|
|
char *id;
|
|
int fourcc;
|
|
int extradata;
|
|
} videocodec_info_t;
|
|
|
|
static const videocodec_info_t vinfo[] = {
|
|
{MKV_V_MJPEG, mmioFOURCC('m', 'j', 'p', 'g'), 1},
|
|
{MKV_V_MPEG1, mmioFOURCC('m', 'p', 'g', '1'), 0},
|
|
{MKV_V_MPEG2, mmioFOURCC('m', 'p', 'g', '2'), 0},
|
|
{MKV_V_MPEG4_SP, mmioFOURCC('m', 'p', '4', 'v'), 1},
|
|
{MKV_V_MPEG4_ASP, mmioFOURCC('m', 'p', '4', 'v'), 1},
|
|
{MKV_V_MPEG4_AP, mmioFOURCC('m', 'p', '4', 'v'), 1},
|
|
{MKV_V_MPEG4_AVC, mmioFOURCC('a', 'v', 'c', '1'), 1},
|
|
{MKV_V_THEORA, mmioFOURCC('t', 'h', 'e', 'o'), 1},
|
|
{MKV_V_VP8, mmioFOURCC('V', 'P', '8', '0'), 0},
|
|
{NULL, 0, 0}
|
|
};
|
|
|
|
static int demux_mkv_open_video(demuxer_t *demuxer, mkv_track_t *track,
|
|
int vid)
|
|
{
|
|
BITMAPINFOHEADER *bih;
|
|
void *ImageDesc = NULL;
|
|
sh_video_t *sh_v;
|
|
|
|
if (track->ms_compat) { /* MS compatibility mode */
|
|
BITMAPINFOHEADER *src;
|
|
|
|
if (track->private_data == NULL
|
|
|| track->private_size < sizeof(*bih))
|
|
return 1;
|
|
|
|
src = (BITMAPINFOHEADER *) track->private_data;
|
|
bih = calloc(1, track->private_size);
|
|
bih->biSize = le2me_32(src->biSize);
|
|
bih->biWidth = le2me_32(src->biWidth);
|
|
bih->biHeight = le2me_32(src->biHeight);
|
|
bih->biPlanes = le2me_16(src->biPlanes);
|
|
bih->biBitCount = le2me_16(src->biBitCount);
|
|
bih->biCompression = le2me_32(src->biCompression);
|
|
bih->biSizeImage = le2me_32(src->biSizeImage);
|
|
bih->biXPelsPerMeter = le2me_32(src->biXPelsPerMeter);
|
|
bih->biYPelsPerMeter = le2me_32(src->biYPelsPerMeter);
|
|
bih->biClrUsed = le2me_32(src->biClrUsed);
|
|
bih->biClrImportant = le2me_32(src->biClrImportant);
|
|
memcpy(bih + 1,
|
|
src + 1,
|
|
track->private_size - sizeof(*bih));
|
|
|
|
if (track->v_width == 0)
|
|
track->v_width = bih->biWidth;
|
|
if (track->v_height == 0)
|
|
track->v_height = bih->biHeight;
|
|
} else {
|
|
bih = calloc(1, sizeof(*bih));
|
|
bih->biSize = sizeof(*bih);
|
|
bih->biWidth = track->v_width;
|
|
bih->biHeight = track->v_height;
|
|
bih->biBitCount = 24;
|
|
bih->biSizeImage = bih->biWidth * bih->biHeight * bih->biBitCount / 8;
|
|
|
|
if (track->private_size >= RVPROPERTIES_SIZE
|
|
&& (!strcmp(track->codec_id, MKV_V_REALV10)
|
|
|| !strcmp(track->codec_id, MKV_V_REALV20)
|
|
|| !strcmp(track->codec_id, MKV_V_REALV30)
|
|
|| !strcmp(track->codec_id, MKV_V_REALV40))) {
|
|
unsigned char *dst, *src;
|
|
uint32_t type2;
|
|
unsigned int cnt;
|
|
|
|
src = (uint8_t *) track->private_data + RVPROPERTIES_SIZE;
|
|
|
|
cnt = track->private_size - RVPROPERTIES_SIZE;
|
|
bih = realloc(bih, sizeof(*bih) + 8 + cnt);
|
|
bih->biSize = 48 + cnt;
|
|
bih->biPlanes = 1;
|
|
type2 = AV_RB32(src - 4);
|
|
if (type2 == 0x10003000 || type2 == 0x10003001)
|
|
bih->biCompression = mmioFOURCC('R', 'V', '1', '3');
|
|
else
|
|
bih->biCompression =
|
|
mmioFOURCC('R', 'V', track->codec_id[9], '0');
|
|
dst = (unsigned char *) (bih + 1);
|
|
// copy type1 and type2 info from rv properties
|
|
memcpy(dst, src - 8, 8 + cnt);
|
|
track->realmedia = 1;
|
|
|
|
#ifdef CONFIG_QTX_CODECS
|
|
} else if (track->private_size >= sizeof(ImageDescription)
|
|
&& !strcmp(track->codec_id, MKV_V_QUICKTIME)) {
|
|
ImageDescriptionPtr idesc;
|
|
|
|
idesc = (ImageDescriptionPtr) track->private_data;
|
|
idesc->idSize = be2me_32(idesc->idSize);
|
|
idesc->cType = be2me_32(idesc->cType);
|
|
idesc->version = be2me_16(idesc->version);
|
|
idesc->revisionLevel = be2me_16(idesc->revisionLevel);
|
|
idesc->vendor = be2me_32(idesc->vendor);
|
|
idesc->temporalQuality = be2me_32(idesc->temporalQuality);
|
|
idesc->spatialQuality = be2me_32(idesc->spatialQuality);
|
|
idesc->width = be2me_16(idesc->width);
|
|
idesc->height = be2me_16(idesc->height);
|
|
idesc->hRes = be2me_32(idesc->hRes);
|
|
idesc->vRes = be2me_32(idesc->vRes);
|
|
idesc->dataSize = be2me_32(idesc->dataSize);
|
|
idesc->frameCount = be2me_16(idesc->frameCount);
|
|
idesc->depth = be2me_16(idesc->depth);
|
|
idesc->clutID = be2me_16(idesc->clutID);
|
|
bih->biPlanes = 1;
|
|
bih->biCompression = idesc->cType;
|
|
ImageDesc = idesc;
|
|
#endif /* CONFIG_QTX_CODECS */
|
|
|
|
} else {
|
|
const videocodec_info_t *vi = vinfo;
|
|
while (vi->id && strcmp(vi->id, track->codec_id))
|
|
vi++;
|
|
bih->biCompression = vi->fourcc;
|
|
if (vi->extradata && track->private_data
|
|
&& (track->private_size > 0)) {
|
|
bih->biSize += track->private_size;
|
|
bih = realloc(bih, bih->biSize);
|
|
memcpy(bih + 1, track->private_data, track->private_size);
|
|
}
|
|
if (!vi->id) {
|
|
mp_tmsg(MSGT_DEMUX, MSGL_WARN, "[mkv] Unknown/unsupported "
|
|
"CodecID (%s) or missing/bad CodecPrivate\n"
|
|
"[mkv] data (track %u).\n",
|
|
track->codec_id, track->tnum);
|
|
free(bih);
|
|
return 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
sh_v = new_sh_video(demuxer, vid);
|
|
sh_v->title = talloc_strdup(sh_v, track->name);
|
|
sh_v->bih = bih;
|
|
sh_v->format = sh_v->bih->biCompression;
|
|
if (track->v_frate == 0.0)
|
|
track->v_frate = 25.0;
|
|
sh_v->fps = track->v_frate;
|
|
sh_v->frametime = 1 / track->v_frate;
|
|
sh_v->aspect = 0;
|
|
if (!track->realmedia) {
|
|
sh_v->disp_w = track->v_width;
|
|
sh_v->disp_h = track->v_height;
|
|
if (track->v_dheight)
|
|
sh_v->aspect = (double) track->v_dwidth / track->v_dheight;
|
|
} else {
|
|
// vd_realvid.c will set aspect to disp_w/disp_h and rederive
|
|
// disp_w and disp_h from the RealVideo stream contents returned
|
|
// by the Real DLLs. If DisplayWidth/DisplayHeight was not set in
|
|
// the Matroska file then it has already been set to PixelWidth/Height
|
|
// by check_track_information.
|
|
sh_v->disp_w = track->v_dwidth;
|
|
sh_v->disp_h = track->v_dheight;
|
|
}
|
|
sh_v->ImageDesc = ImageDesc;
|
|
mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] Aspect: %f\n", sh_v->aspect);
|
|
|
|
sh_v->ds = demuxer->video;
|
|
return 0;
|
|
}
|
|
|
|
static struct mkv_audio_tag {
|
|
char *id; bool prefix; uint32_t formattag;
|
|
} mkv_audio_tags[] = {
|
|
{ MKV_A_MP2, 0, 0x0055 },
|
|
{ MKV_A_MP3, 0, 0x0055 },
|
|
{ MKV_A_AC3, 1, 0x2000 },
|
|
{ MKV_A_EAC3, 1, mmioFOURCC('E', 'A', 'C', '3') },
|
|
{ MKV_A_DTS, 0, 0x2001 },
|
|
{ MKV_A_PCM, 0, 0x0001 },
|
|
{ MKV_A_PCM_BE, 0, 0x0001 },
|
|
{ MKV_A_AAC_2MAIN, 0, mmioFOURCC('M', 'P', '4', 'A') },
|
|
{ MKV_A_AAC_2LC, 1, mmioFOURCC('M', 'P', '4', 'A') },
|
|
{ MKV_A_AAC_2SSR, 0, mmioFOURCC('M', 'P', '4', 'A') },
|
|
{ MKV_A_AAC_4MAIN, 0, mmioFOURCC('M', 'P', '4', 'A') },
|
|
{ MKV_A_AAC_4LC, 1, mmioFOURCC('M', 'P', '4', 'A') },
|
|
{ MKV_A_AAC_4SSR, 0, mmioFOURCC('M', 'P', '4', 'A') },
|
|
{ MKV_A_AAC_4LTP, 0, mmioFOURCC('M', 'P', '4', 'A') },
|
|
{ MKV_A_AAC, 0, mmioFOURCC('M', 'P', '4', 'A') },
|
|
{ MKV_A_VORBIS, 0, mmioFOURCC('v', 'r', 'b', 's') },
|
|
{ MKV_A_QDMC, 0, mmioFOURCC('Q', 'D', 'M', 'C') },
|
|
{ MKV_A_QDMC2, 0, mmioFOURCC('Q', 'D', 'M', '2') },
|
|
{ MKV_A_WAVPACK, 0, mmioFOURCC('W', 'V', 'P', 'K') },
|
|
{ MKV_A_TRUEHD, 0, mmioFOURCC('T', 'R', 'H', 'D') },
|
|
{ MKV_A_FLAC, 0, mmioFOURCC('f', 'L', 'a', 'C') },
|
|
{ MKV_A_REAL28, 0, mmioFOURCC('2', '8', '_', '8') },
|
|
{ MKV_A_REALATRC, 0, mmioFOURCC('a', 't', 'r', 'c') },
|
|
{ MKV_A_REALCOOK, 0, mmioFOURCC('c', 'o', 'o', 'k') },
|
|
{ MKV_A_REALDNET, 0, mmioFOURCC('d', 'n', 'e', 't') },
|
|
{ MKV_A_REALSIPR, 0, mmioFOURCC('s', 'i', 'p', 'r') },
|
|
{ NULL },
|
|
};
|
|
|
|
|
|
static int demux_mkv_open_audio(demuxer_t *demuxer, mkv_track_t *track,
|
|
int aid)
|
|
{
|
|
sh_audio_t *sh_a = new_sh_audio(demuxer, aid);
|
|
if (!sh_a)
|
|
return 1;
|
|
|
|
if (track->language && (strcmp(track->language, "und") != 0))
|
|
sh_a->lang = talloc_strdup(sh_a, track->language);
|
|
sh_a->title = talloc_strdup(sh_a, track->name);
|
|
sh_a->default_track = track->default_track;
|
|
sh_a->ds = demuxer->audio;
|
|
if (track->ms_compat) {
|
|
if (track->private_size < sizeof(*sh_a->wf))
|
|
goto error;
|
|
WAVEFORMATEX *wf = (WAVEFORMATEX *) track->private_data;
|
|
sh_a->wf = calloc(1, track->private_size);
|
|
sh_a->wf->wFormatTag = le2me_16(wf->wFormatTag);
|
|
sh_a->wf->nChannels = le2me_16(wf->nChannels);
|
|
sh_a->wf->nSamplesPerSec = le2me_32(wf->nSamplesPerSec);
|
|
sh_a->wf->nAvgBytesPerSec = le2me_32(wf->nAvgBytesPerSec);
|
|
sh_a->wf->nBlockAlign = le2me_16(wf->nBlockAlign);
|
|
sh_a->wf->wBitsPerSample = le2me_16(wf->wBitsPerSample);
|
|
sh_a->wf->cbSize = track->private_size - sizeof(*sh_a->wf);
|
|
memcpy(sh_a->wf + 1, wf + 1,
|
|
track->private_size - sizeof(*sh_a->wf));
|
|
if (track->a_sfreq == 0.0)
|
|
track->a_sfreq = sh_a->wf->nSamplesPerSec;
|
|
if (track->a_channels == 0)
|
|
track->a_channels = sh_a->wf->nChannels;
|
|
if (track->a_bps == 0)
|
|
track->a_bps = sh_a->wf->wBitsPerSample;
|
|
track->a_formattag = sh_a->wf->wFormatTag;
|
|
} else {
|
|
sh_a->wf = calloc(1, sizeof(*sh_a->wf));
|
|
for (int i = 0; ; i++) {
|
|
struct mkv_audio_tag *t = mkv_audio_tags + i;
|
|
if (t->id == NULL)
|
|
goto error;
|
|
if (t->prefix) {
|
|
if (!bstr_startswith0(bstr(track->codec_id), t->id))
|
|
continue;
|
|
} else {
|
|
if (strcmp(track->codec_id, t->id))
|
|
continue;
|
|
}
|
|
track->a_formattag = t->formattag;
|
|
break;
|
|
}
|
|
}
|
|
|
|
sh_a->format = track->a_formattag;
|
|
sh_a->wf->wFormatTag = track->a_formattag;
|
|
sh_a->channels = track->a_channels;
|
|
sh_a->wf->nChannels = track->a_channels;
|
|
sh_a->samplerate = (uint32_t) track->a_sfreq;
|
|
sh_a->container_out_samplerate = track->a_osfreq;
|
|
sh_a->wf->nSamplesPerSec = (uint32_t) track->a_sfreq;
|
|
if (track->a_bps == 0) {
|
|
sh_a->samplesize = 2;
|
|
sh_a->wf->wBitsPerSample = 16;
|
|
} else {
|
|
sh_a->samplesize = track->a_bps / 8;
|
|
sh_a->wf->wBitsPerSample = track->a_bps;
|
|
}
|
|
if (track->a_formattag == 0x0055) { /* MP3 || MP2 */
|
|
sh_a->wf->nAvgBytesPerSec = 16000;
|
|
sh_a->wf->nBlockAlign = 1152;
|
|
} else if ((track->a_formattag == 0x2000) /* AC3 */
|
|
|| track->a_formattag == mmioFOURCC('E', 'A', 'C', '3')
|
|
|| (track->a_formattag == 0x2001)) { /* DTS */
|
|
free(sh_a->wf);
|
|
sh_a->wf = NULL;
|
|
} else if (track->a_formattag == 0x0001) { /* PCM || PCM_BE */
|
|
sh_a->wf->nAvgBytesPerSec = sh_a->channels * sh_a->samplerate * 2;
|
|
sh_a->wf->nBlockAlign = sh_a->wf->nAvgBytesPerSec;
|
|
if (!strcmp(track->codec_id, MKV_A_PCM_BE))
|
|
sh_a->format = mmioFOURCC('t', 'w', 'o', 's');
|
|
} else if (!strcmp(track->codec_id, MKV_A_QDMC)
|
|
|| !strcmp(track->codec_id, MKV_A_QDMC2)) {
|
|
sh_a->wf->nAvgBytesPerSec = 16000;
|
|
sh_a->wf->nBlockAlign = 1486;
|
|
track->fix_i_bps = 1;
|
|
track->qt_last_a_pts = 0.0;
|
|
goto copy_private_data;
|
|
} else if (track->a_formattag == mmioFOURCC('M', 'P', '4', 'A')) {
|
|
int profile, srate_idx;
|
|
|
|
sh_a->wf->nAvgBytesPerSec = 16000;
|
|
sh_a->wf->nBlockAlign = 1024;
|
|
|
|
if (!strcmp(track->codec_id, MKV_A_AAC) && track->private_data)
|
|
goto copy_private_data;
|
|
|
|
/* Recreate the 'private data' */
|
|
/* which faad2 uses in its initialization */
|
|
srate_idx = aac_get_sample_rate_index(sh_a->samplerate);
|
|
if (!strncmp(&track->codec_id[12], "MAIN", 4))
|
|
profile = 0;
|
|
else if (!strncmp(&track->codec_id[12], "LC", 2))
|
|
profile = 1;
|
|
else if (!strncmp(&track->codec_id[12], "SSR", 3))
|
|
profile = 2;
|
|
else
|
|
profile = 3;
|
|
sh_a->codecdata = malloc(5);
|
|
sh_a->codecdata[0] = ((profile + 1) << 3) | ((srate_idx & 0xE) >> 1);
|
|
sh_a->codecdata[1] =
|
|
((srate_idx & 0x1) << 7) | (track->a_channels << 3);
|
|
|
|
if (strstr(track->codec_id, "SBR") != NULL) {
|
|
/* HE-AAC (aka SBR AAC) */
|
|
sh_a->codecdata_len = 5;
|
|
|
|
sh_a->samplerate *= 2;
|
|
sh_a->wf->nSamplesPerSec *= 2;
|
|
srate_idx = aac_get_sample_rate_index(sh_a->samplerate);
|
|
sh_a->codecdata[2] = AAC_SYNC_EXTENSION_TYPE >> 3;
|
|
sh_a->codecdata[3] = ((AAC_SYNC_EXTENSION_TYPE & 0x07) << 5) | 5;
|
|
sh_a->codecdata[4] = (1 << 7) | (srate_idx << 3);
|
|
track->default_duration = 1024.0 / (sh_a->samplerate / 2);
|
|
} else {
|
|
sh_a->codecdata_len = 2;
|
|
track->default_duration = 1024.0 / sh_a->samplerate;
|
|
}
|
|
} else if (track->a_formattag == mmioFOURCC('v', 'r', 'b', 's')) {
|
|
/* VORBIS */
|
|
if (track->private_size == 0 || track->ms_compat && !sh_a->wf->cbSize)
|
|
goto error;
|
|
if (!track->ms_compat) {
|
|
sh_a->wf->cbSize = track->private_size;
|
|
sh_a->wf = realloc(sh_a->wf, sizeof(*sh_a->wf) + sh_a->wf->cbSize);
|
|
memcpy((unsigned char *) (sh_a->wf + 1), track->private_data,
|
|
sh_a->wf->cbSize);
|
|
}
|
|
} else if (!strncmp(track->codec_id, MKV_A_REALATRC, 7)) {
|
|
if (track->private_size < RAPROPERTIES4_SIZE)
|
|
goto error;
|
|
/* Common initialization for all RealAudio codecs */
|
|
unsigned char *src = track->private_data;
|
|
int codecdata_length, version;
|
|
int flavor;
|
|
|
|
sh_a->wf->nAvgBytesPerSec = 0; /* FIXME !? */
|
|
|
|
version = AV_RB16(src + 4);
|
|
flavor = AV_RB16(src + 22);
|
|
track->coded_framesize = AV_RB32(src + 24);
|
|
track->sub_packet_h = AV_RB16(src + 40);
|
|
sh_a->wf->nBlockAlign = track->audiopk_size = AV_RB16(src + 42);
|
|
track->sub_packet_size = AV_RB16(src + 44);
|
|
if (version == 4) {
|
|
src += RAPROPERTIES4_SIZE;
|
|
src += src[0] + 1;
|
|
src += src[0] + 1;
|
|
} else
|
|
src += RAPROPERTIES5_SIZE;
|
|
|
|
src += 3;
|
|
if (version == 5)
|
|
src++;
|
|
codecdata_length = AV_RB32(src);
|
|
src += 4;
|
|
sh_a->wf->cbSize = codecdata_length;
|
|
sh_a->wf = realloc(sh_a->wf, sizeof(*sh_a->wf) + sh_a->wf->cbSize);
|
|
memcpy(((char *) (sh_a->wf + 1)), src, codecdata_length);
|
|
|
|
switch (track->a_formattag) {
|
|
case mmioFOURCC('a', 't', 'r', 'c'):
|
|
sh_a->wf->nAvgBytesPerSec = atrc_fl2bps[flavor];
|
|
sh_a->wf->nBlockAlign = track->sub_packet_size;
|
|
goto audiobuf;
|
|
case mmioFOURCC('c', 'o', 'o', 'k'):
|
|
sh_a->wf->nAvgBytesPerSec = cook_fl2bps[flavor];
|
|
sh_a->wf->nBlockAlign = track->sub_packet_size;
|
|
goto audiobuf;
|
|
case mmioFOURCC('s', 'i', 'p', 'r'):
|
|
sh_a->wf->nAvgBytesPerSec = sipr_fl2bps[flavor];
|
|
sh_a->wf->nBlockAlign = track->coded_framesize;
|
|
goto audiobuf;
|
|
case mmioFOURCC('2', '8', '_', '8'):
|
|
sh_a->wf->nAvgBytesPerSec = 3600;
|
|
sh_a->wf->nBlockAlign = track->coded_framesize;
|
|
audiobuf:
|
|
track->audio_buf =
|
|
malloc(track->sub_packet_h * track->audiopk_size);
|
|
track->audio_timestamp =
|
|
malloc(track->sub_packet_h * sizeof(double));
|
|
break;
|
|
}
|
|
|
|
track->realmedia = 1;
|
|
} else if (!strcmp(track->codec_id, MKV_A_FLAC)
|
|
|| (track->a_formattag == 0xf1ac)) {
|
|
unsigned char *ptr;
|
|
int size;
|
|
free(sh_a->wf);
|
|
sh_a->wf = NULL;
|
|
|
|
if (!track->ms_compat) {
|
|
ptr = track->private_data;
|
|
size = track->private_size;
|
|
} else {
|
|
sh_a->format = mmioFOURCC('f', 'L', 'a', 'C');
|
|
ptr = track->private_data + sizeof(*sh_a->wf);
|
|
size = track->private_size - sizeof(*sh_a->wf);
|
|
}
|
|
if (size < 4 || ptr[0] != 'f' || ptr[1] != 'L' || ptr[2] != 'a'
|
|
|| ptr[3] != 'C') {
|
|
sh_a->codecdata = malloc(4);
|
|
sh_a->codecdata_len = 4;
|
|
memcpy(sh_a->codecdata, "fLaC", 4);
|
|
} else {
|
|
sh_a->codecdata = malloc(size);
|
|
sh_a->codecdata_len = size;
|
|
memcpy(sh_a->codecdata, ptr, size);
|
|
}
|
|
} else if (track->a_formattag == mmioFOURCC('W', 'V', 'P', 'K') ||
|
|
track->a_formattag == mmioFOURCC('T', 'R', 'H', 'D')) {
|
|
copy_private_data:
|
|
if (!track->ms_compat && track->private_size) {
|
|
sh_a->codecdata = malloc(track->private_size);
|
|
sh_a->codecdata_len = track->private_size;
|
|
memcpy(sh_a->codecdata, track->private_data, track->private_size);
|
|
}
|
|
} else if (!track->ms_compat) {
|
|
goto error;
|
|
}
|
|
|
|
return 0;
|
|
|
|
error:
|
|
mp_tmsg(MSGT_DEMUX, MSGL_WARN, "[mkv] Unknown/unsupported audio "
|
|
"codec ID '%s' for track %u or missing/faulty\n[mkv] "
|
|
"private codec data.\n", track->codec_id, track->tnum);
|
|
free_sh_audio(demuxer, track->id);
|
|
return 1;
|
|
}
|
|
|
|
static int demux_mkv_open_sub(demuxer_t *demuxer, mkv_track_t *track,
|
|
int sid)
|
|
{
|
|
if (track->subtitle_type) {
|
|
int size;
|
|
uint8_t *buffer;
|
|
sh_sub_t *sh = new_sh_sub(demuxer, sid);
|
|
track->sh_sub = sh;
|
|
sh->type = track->subtitle_type;
|
|
size = track->private_size;
|
|
demux_mkv_decode(track, track->private_data, &buffer, &size, 2);
|
|
if (buffer && buffer != track->private_data) {
|
|
talloc_free(track->private_data);
|
|
talloc_steal(track, buffer);
|
|
track->private_data = buffer;
|
|
track->private_size = size;
|
|
}
|
|
sh->extradata = malloc(track->private_size);
|
|
memcpy(sh->extradata, track->private_data, track->private_size);
|
|
sh->extradata_len = track->private_size;
|
|
if (track->language && (strcmp(track->language, "und") != 0))
|
|
sh->lang = talloc_strdup(sh, track->language);
|
|
sh->title = talloc_strdup(sh, track->name);
|
|
sh->default_track = track->default_track;
|
|
} else {
|
|
mp_tmsg(MSGT_DEMUX, MSGL_ERR,
|
|
"[mkv] Subtitle type '%s' is not supported.\n",
|
|
track->codec_id);
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void mkv_free(struct demuxer *demuxer)
|
|
{
|
|
struct mkv_demuxer *mkv_d = demuxer->priv;
|
|
if (!mkv_d)
|
|
return;
|
|
for (int i = 0; i < mkv_d->num_tracks; i++)
|
|
demux_mkv_free_trackentry(mkv_d->tracks[i]);
|
|
free(mkv_d->indexes);
|
|
free(mkv_d->cluster_positions);
|
|
}
|
|
|
|
static int demux_mkv_open(demuxer_t *demuxer)
|
|
{
|
|
stream_t *s = demuxer->stream;
|
|
mkv_demuxer_t *mkv_d;
|
|
mkv_track_t *track;
|
|
|
|
stream_seek(s, s->start_pos);
|
|
if (ebml_read_id(s, NULL) != EBML_ID_EBML)
|
|
return 0;
|
|
struct ebml_ebml ebml_master = {};
|
|
struct ebml_parse_ctx parse_ctx = { .no_error_messages = true };
|
|
if (ebml_read_element(s, &parse_ctx, &ebml_master, &ebml_ebml_desc) < 0)
|
|
return 0;
|
|
if (ebml_master.doc_type.start == NULL) {
|
|
mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] File has EBML header but no doctype."
|
|
" Assuming \"matroska\".\n");
|
|
} else if (bstrcmp(ebml_master.doc_type, bstr("matroska")) != 0
|
|
&& bstrcmp(ebml_master.doc_type, bstr("webm")) != 0) {
|
|
mp_msg(MSGT_DEMUX, MSGL_DBG2, "[mkv] no head found\n");
|
|
talloc_free(parse_ctx.talloc_ctx);
|
|
return 0;
|
|
}
|
|
if (ebml_master.doc_type_read_version > 2) {
|
|
mp_msg(MSGT_DEMUX, MSGL_WARN, "[mkv] This looks like a Matroska file, "
|
|
"but we don't support format version %"PRIu64"\n",
|
|
ebml_master.doc_type_read_version);
|
|
talloc_free(parse_ctx.talloc_ctx);
|
|
return 0;
|
|
}
|
|
if ((ebml_master.n_ebml_read_version
|
|
&& ebml_master.ebml_read_version != EBML_VERSION)
|
|
|| (ebml_master.n_ebml_max_size_length
|
|
&& ebml_master.ebml_max_size_length > 8)
|
|
|| (ebml_master.n_ebml_max_id_length
|
|
&& ebml_master.ebml_max_id_length != 4)) {
|
|
mp_msg(MSGT_DEMUX, MSGL_WARN, "[mkv] This looks like a Matroska file, "
|
|
"but the header has bad parameters\n");
|
|
talloc_free(parse_ctx.talloc_ctx);
|
|
return 0;
|
|
}
|
|
talloc_free(parse_ctx.talloc_ctx);
|
|
|
|
mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] Found the head...\n");
|
|
|
|
if (ebml_read_id(s, NULL) != MATROSKA_ID_SEGMENT) {
|
|
mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] but no segment :(\n");
|
|
return 0;
|
|
}
|
|
ebml_read_length(s, NULL); /* return bytes number until EOF */
|
|
|
|
mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] + a segment...\n");
|
|
|
|
mkv_d = talloc_zero(demuxer, struct mkv_demuxer);
|
|
demuxer->priv = mkv_d;
|
|
mkv_d->tc_scale = 1000000;
|
|
mkv_d->segment_start = stream_tell(s);
|
|
|
|
while (1) {
|
|
uint32_t id = ebml_read_id(s, NULL);
|
|
if (s->eof) {
|
|
mp_tmsg(MSGT_DEMUX, MSGL_ERR, "[mkv] Unexpected end of file\n");
|
|
return 0;
|
|
}
|
|
if (id == MATROSKA_ID_CLUSTER) {
|
|
mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] |+ found cluster, headers are "
|
|
"parsed completely :)\n");
|
|
stream_seek(s, stream_tell(s) - 4);
|
|
break;
|
|
}
|
|
int res = read_header_element(demuxer, id, 0);
|
|
if (res <= -2)
|
|
return 0;
|
|
if (res < 0)
|
|
break;
|
|
}
|
|
|
|
display_create_tracks(demuxer);
|
|
|
|
/* select video track */
|
|
track = NULL;
|
|
if (demuxer->video->id == -1) { /* automatically select a video track */
|
|
/* search for a video track that has the 'default' flag set */
|
|
for (int i = 0; i < mkv_d->num_tracks; i++)
|
|
if (mkv_d->tracks[i]->type == MATROSKA_TRACK_VIDEO
|
|
&& mkv_d->tracks[i]->default_track) {
|
|
track = mkv_d->tracks[i];
|
|
break;
|
|
}
|
|
|
|
if (track == NULL)
|
|
/* no track has the 'default' flag set */
|
|
/* let's take the first video track */
|
|
for (int i = 0; i < mkv_d->num_tracks; i++)
|
|
if (mkv_d->tracks[i]->type == MATROSKA_TRACK_VIDEO
|
|
&& mkv_d->tracks[i]->id >= 0) {
|
|
track = mkv_d->tracks[i];
|
|
break;
|
|
}
|
|
} else if (demuxer->video->id != -2) /* -2 = no video at all */
|
|
track = find_track_by_num(mkv_d, demuxer->video->id,
|
|
MATROSKA_TRACK_VIDEO);
|
|
|
|
if (track && demuxer->v_streams[track->id]) {
|
|
mp_tmsg(MSGT_DEMUX, MSGL_INFO, "[mkv] Will play video track %u.\n",
|
|
track->tnum);
|
|
demuxer->video->id = track->id;
|
|
demuxer->video->sh = demuxer->v_streams[track->id];
|
|
} else {
|
|
mp_tmsg(MSGT_DEMUX, MSGL_INFO, "[mkv] No video track found/wanted.\n");
|
|
demuxer->video->id = -2;
|
|
}
|
|
|
|
demuxer->audio->id = -2; // wait for higher-level code to select track
|
|
|
|
if (s->end_pos == 0)
|
|
demuxer->seekable = 0;
|
|
else {
|
|
demuxer->movi_start = s->start_pos;
|
|
demuxer->movi_end = s->end_pos;
|
|
demuxer->seekable = 1;
|
|
}
|
|
|
|
demuxer->accurate_seek = true;
|
|
|
|
return DEMUXER_TYPE_MATROSKA;
|
|
}
|
|
|
|
static int demux_mkv_read_block_lacing(uint8_t *buffer, uint64_t *size,
|
|
uint8_t *laces,
|
|
uint32_t **all_lace_sizes)
|
|
{
|
|
uint32_t total = 0;
|
|
uint32_t *lace_size = NULL;
|
|
uint8_t flags;
|
|
int i;
|
|
|
|
*all_lace_sizes = NULL;
|
|
/* lacing flags */
|
|
if (*size < 1)
|
|
goto error;
|
|
flags = *buffer++;
|
|
(*size)--;
|
|
|
|
switch ((flags & 0x06) >> 1) {
|
|
case 0: /* no lacing */
|
|
*laces = 1;
|
|
lace_size = calloc(*laces, sizeof(uint32_t));
|
|
lace_size[0] = *size;
|
|
break;
|
|
|
|
case 1: /* xiph lacing */
|
|
case 2: /* fixed-size lacing */
|
|
case 3: /* EBML lacing */
|
|
if (*size < 1)
|
|
goto error;
|
|
*laces = *buffer++;
|
|
(*size)--;
|
|
(*laces)++;
|
|
lace_size = calloc(*laces, sizeof(uint32_t));
|
|
|
|
switch ((flags & 0x06) >> 1) {
|
|
case 1: /* xiph lacing */
|
|
for (i = 0; i < *laces - 1; i++) {
|
|
lace_size[i] = 0;
|
|
do {
|
|
if (!*size)
|
|
goto error;
|
|
lace_size[i] += *buffer;
|
|
(*size)--;
|
|
} while (*buffer++ == 0xFF);
|
|
if (lace_size[i] > *size - total || total > *size)
|
|
goto error;
|
|
total += lace_size[i];
|
|
}
|
|
lace_size[i] = *size - total;
|
|
break;
|
|
|
|
case 2: /* fixed-size lacing */
|
|
for (i = 0; i < *laces; i++)
|
|
lace_size[i] = *size / *laces;
|
|
break;
|
|
|
|
case 3:; /* EBML lacing */
|
|
int l;
|
|
uint64_t num = ebml_read_vlen_uint(buffer, &l);
|
|
if (num == EBML_UINT_INVALID)
|
|
goto error;
|
|
buffer += l;
|
|
if (*size < l)
|
|
goto error;
|
|
*size -= l;
|
|
if (num > *size)
|
|
goto error;
|
|
|
|
total = lace_size[0] = num;
|
|
for (i = 1; i < *laces - 1; i++) {
|
|
int64_t snum = ebml_read_vlen_int(buffer, &l);
|
|
if (snum == EBML_INT_INVALID)
|
|
goto error;
|
|
buffer += l;
|
|
if (*size < l)
|
|
goto error;
|
|
*size -= l;
|
|
lace_size[i] = lace_size[i - 1] + snum;
|
|
if (lace_size[i] > *size - total || total > *size)
|
|
goto error;
|
|
total += lace_size[i];
|
|
}
|
|
lace_size[i] = *size - total;
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
*all_lace_sizes = lace_size;
|
|
return 0;
|
|
|
|
error:
|
|
free(lace_size);
|
|
mp_msg(MSGT_DEMUX, MSGL_ERR, "[mkv] Bad input [lacing]\n");
|
|
return 1;
|
|
}
|
|
|
|
static void handle_realvideo(demuxer_t *demuxer, mkv_track_t *track,
|
|
uint8_t *buffer, uint32_t size, int64_t block_bref)
|
|
{
|
|
mkv_demuxer_t *mkv_d = (mkv_demuxer_t *) demuxer->priv;
|
|
demux_packet_t *dp;
|
|
uint32_t timestamp = mkv_d->last_pts * 1000;
|
|
|
|
dp = new_demux_packet(size);
|
|
memcpy(dp->buffer, buffer, size);
|
|
|
|
if (mkv_d->v_skip_to_keyframe) {
|
|
dp->pts = mkv_d->last_pts;
|
|
track->rv_kf_base = 0;
|
|
track->rv_kf_pts = timestamp;
|
|
} else
|
|
dp->pts =
|
|
real_fix_timestamp(dp->buffer, timestamp,
|
|
((sh_video_t *) demuxer->video->sh)->bih->
|
|
biCompression, &track->rv_kf_base,
|
|
&track->rv_kf_pts, NULL);
|
|
dp->pos = demuxer->filepos;
|
|
dp->flags = block_bref ? 0 : 0x10;
|
|
|
|
ds_add_packet(demuxer->video, dp);
|
|
}
|
|
|
|
static void handle_realaudio(demuxer_t *demuxer, mkv_track_t *track,
|
|
uint8_t *buffer, uint32_t size, int64_t block_bref)
|
|
{
|
|
mkv_demuxer_t *mkv_d = (mkv_demuxer_t *) demuxer->priv;
|
|
int sps = track->sub_packet_size;
|
|
int sph = track->sub_packet_h;
|
|
int cfs = track->coded_framesize;
|
|
int w = track->audiopk_size;
|
|
int spc = track->sub_packet_cnt;
|
|
demux_packet_t *dp;
|
|
int x;
|
|
|
|
if ((track->a_formattag == mmioFOURCC('2', '8', '_', '8'))
|
|
|| (track->a_formattag == mmioFOURCC('c', 'o', 'o', 'k'))
|
|
|| (track->a_formattag == mmioFOURCC('a', 't', 'r', 'c'))
|
|
|| (track->a_formattag == mmioFOURCC('s', 'i', 'p', 'r'))) {
|
|
// if(!block_bref)
|
|
// spc = track->sub_packet_cnt = 0;
|
|
switch (track->a_formattag) {
|
|
case mmioFOURCC('2', '8', '_', '8'):
|
|
for (x = 0; x < sph / 2; x++)
|
|
memcpy(track->audio_buf + x * 2 * w + spc * cfs,
|
|
buffer + cfs * x, cfs);
|
|
break;
|
|
case mmioFOURCC('c', 'o', 'o', 'k'):
|
|
case mmioFOURCC('a', 't', 'r', 'c'):
|
|
for (x = 0; x < w / sps; x++)
|
|
memcpy(track->audio_buf +
|
|
sps * (sph * x + ((sph + 1) / 2) * (spc & 1) +
|
|
(spc >> 1)), buffer + sps * x, sps);
|
|
break;
|
|
case mmioFOURCC('s', 'i', 'p', 'r'):
|
|
memcpy(track->audio_buf + spc * w, buffer, w);
|
|
if (spc == sph - 1) {
|
|
int n;
|
|
int bs = sph * w * 2 / 96; // nibbles per subpacket
|
|
// Perform reordering
|
|
for (n = 0; n < 38; n++) {
|
|
int j;
|
|
int i = bs * sipr_swaps[n][0];
|
|
int o = bs * sipr_swaps[n][1];
|
|
// swap nibbles of block 'i' with 'o' TODO: optimize
|
|
for (j = 0; j < bs; j++) {
|
|
int x = (i & 1) ?
|
|
(track->audio_buf[i >> 1] >> 4) :
|
|
(track->audio_buf[i >> 1] & 0x0F);
|
|
int y = (o & 1) ?
|
|
(track->audio_buf[o >> 1] >> 4) :
|
|
(track->audio_buf[o >> 1] & 0x0F);
|
|
if (o & 1)
|
|
track->audio_buf[o >> 1] =
|
|
(track->audio_buf[o >> 1] & 0x0F) | (x << 4);
|
|
else
|
|
track->audio_buf[o >> 1] =
|
|
(track->audio_buf[o >> 1] & 0xF0) | x;
|
|
if (i & 1)
|
|
track->audio_buf[i >> 1] =
|
|
(track->audio_buf[i >> 1] & 0x0F) | (y << 4);
|
|
else
|
|
track->audio_buf[i >> 1] =
|
|
(track->audio_buf[i >> 1] & 0xF0) | y;
|
|
++i;
|
|
++o;
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
track->audio_timestamp[track->sub_packet_cnt] =
|
|
(track->ra_pts == mkv_d->last_pts) ? 0 : (mkv_d->last_pts);
|
|
track->ra_pts = mkv_d->last_pts;
|
|
if (track->sub_packet_cnt == 0)
|
|
track->audio_filepos = demuxer->filepos;
|
|
if (++(track->sub_packet_cnt) == sph) {
|
|
int apk_usize =
|
|
((sh_audio_t *) demuxer->audio->sh)->wf->nBlockAlign;
|
|
track->sub_packet_cnt = 0;
|
|
// Release all the audio packets
|
|
for (x = 0; x < sph * w / apk_usize; x++) {
|
|
dp = new_demux_packet(apk_usize);
|
|
memcpy(dp->buffer, track->audio_buf + x * apk_usize,
|
|
apk_usize);
|
|
/* Put timestamp only on packets that correspond to original
|
|
* audio packets in file */
|
|
dp->pts = (x * apk_usize % w) ? 0 :
|
|
track->audio_timestamp[x * apk_usize / w];
|
|
dp->pos = track->audio_filepos; // all equal
|
|
dp->flags = x ? 0 : 0x10; // Mark first packet as keyframe
|
|
ds_add_packet(demuxer->audio, dp);
|
|
}
|
|
}
|
|
} else { // Not a codec that require reordering
|
|
dp = new_demux_packet(size);
|
|
memcpy(dp->buffer, buffer, size);
|
|
if (track->ra_pts == mkv_d->last_pts && !mkv_d->a_skip_to_keyframe)
|
|
dp->pts = 0;
|
|
else
|
|
dp->pts = mkv_d->last_pts;
|
|
track->ra_pts = mkv_d->last_pts;
|
|
|
|
dp->pos = demuxer->filepos;
|
|
dp->flags = block_bref ? 0 : 0x10;
|
|
ds_add_packet(demuxer->audio, dp);
|
|
}
|
|
}
|
|
|
|
static int handle_block(demuxer_t *demuxer, uint8_t *block, uint64_t length,
|
|
uint64_t block_duration, int64_t block_bref,
|
|
int64_t block_fref, uint8_t simpleblock)
|
|
{
|
|
mkv_demuxer_t *mkv_d = (mkv_demuxer_t *) demuxer->priv;
|
|
mkv_track_t *track = NULL;
|
|
demux_stream_t *ds = NULL;
|
|
uint64_t old_length;
|
|
uint64_t tc;
|
|
uint32_t *lace_size;
|
|
uint8_t laces, flags;
|
|
int i, num, tmp, use_this_block = 1;
|
|
double current_pts;
|
|
int16_t time;
|
|
|
|
/* first byte(s): track num */
|
|
num = ebml_read_vlen_uint(block, &tmp);
|
|
block += tmp;
|
|
/* time (relative to cluster time) */
|
|
time = block[0] << 8 | block[1];
|
|
block += 2;
|
|
length -= tmp + 2;
|
|
old_length = length;
|
|
flags = block[0];
|
|
if (demux_mkv_read_block_lacing(block, &length, &laces, &lace_size))
|
|
return 0;
|
|
block += old_length - length;
|
|
|
|
tc = time * mkv_d->tc_scale + mkv_d->cluster_tc;
|
|
current_pts = tc / 1e9;
|
|
|
|
for (i = 0; i < mkv_d->num_tracks; i++)
|
|
if (mkv_d->tracks[i]->tnum == num) {
|
|
track = mkv_d->tracks[i];
|
|
break;
|
|
}
|
|
if (track == NULL) {
|
|
free(lace_size);
|
|
return 1;
|
|
}
|
|
if (track->type == MATROSKA_TRACK_AUDIO
|
|
&& track->id == demuxer->audio->id) {
|
|
ds = demuxer->audio;
|
|
|
|
if (mkv_d->a_skip_to_keyframe) {
|
|
if (simpleblock) {
|
|
if (!(flags & 0x80)) /*current frame isn't a keyframe */
|
|
use_this_block = 0;
|
|
} else if (block_bref != 0)
|
|
use_this_block = 0;
|
|
}
|
|
if (mkv_d->v_skip_to_keyframe)
|
|
use_this_block = 0;
|
|
|
|
if (track->fix_i_bps && use_this_block) {
|
|
sh_audio_t *sh = (sh_audio_t *) ds->sh;
|
|
|
|
if (block_duration != 0) {
|
|
sh->i_bps = length * 1e9 / block_duration;
|
|
track->fix_i_bps = 0;
|
|
} else if (track->qt_last_a_pts == 0.0)
|
|
track->qt_last_a_pts = current_pts;
|
|
else if (track->qt_last_a_pts != current_pts) {
|
|
sh->i_bps = length / (current_pts - track->qt_last_a_pts);
|
|
track->fix_i_bps = 0;
|
|
}
|
|
}
|
|
} else if (tc < mkv_d->skip_to_timecode)
|
|
use_this_block = 0;
|
|
else if (track->type == MATROSKA_TRACK_VIDEO
|
|
&& track->id == demuxer->video->id) {
|
|
ds = demuxer->video;
|
|
if (mkv_d->v_skip_to_keyframe) {
|
|
if (simpleblock) {
|
|
if (!(flags & 0x80)) /*current frame isn't a keyframe */
|
|
use_this_block = 0;
|
|
} else if (block_bref != 0 || block_fref != 0)
|
|
use_this_block = 0;
|
|
}
|
|
} else if (track->type == MATROSKA_TRACK_SUBTITLE
|
|
&& track->id == demuxer->sub->id) {
|
|
ds = demuxer->sub;
|
|
if (laces > 1) {
|
|
mp_msg(MSGT_DEMUX, MSGL_WARN, "[mkv] Subtitles use Matroska "
|
|
"lacing. This is abnormal and not supported.\n");
|
|
use_this_block = 0;
|
|
}
|
|
sub_utf8 = 1; // XXX this variable should be eventually removed
|
|
} else
|
|
use_this_block = 0;
|
|
|
|
if (use_this_block) {
|
|
mkv_d->last_pts = current_pts;
|
|
mkv_d->last_filepos = demuxer->filepos;
|
|
|
|
for (i = 0; i < laces; i++) {
|
|
if (ds == demuxer->video && track->realmedia)
|
|
handle_realvideo(demuxer, track, block, lace_size[i],
|
|
block_bref);
|
|
else if (ds == demuxer->audio && track->realmedia)
|
|
handle_realaudio(demuxer, track, block, lace_size[i],
|
|
block_bref);
|
|
else {
|
|
int size = lace_size[i];
|
|
demux_packet_t *dp;
|
|
uint8_t *buffer;
|
|
demux_mkv_decode(track, block, &buffer, &size, 1);
|
|
if (buffer) {
|
|
dp = new_demux_packet(size);
|
|
memcpy(dp->buffer, buffer, size);
|
|
if (buffer != block)
|
|
talloc_free(buffer);
|
|
dp->flags = (block_bref == 0
|
|
&& block_fref == 0) ? 0x10 : 0;
|
|
/* If default_duration is 0, assume no pts value is known
|
|
* for packets after the first one (rather than all pts
|
|
* values being the same) */
|
|
if (i == 0 || track->default_duration)
|
|
dp->pts =
|
|
mkv_d->last_pts + i * track->default_duration;
|
|
dp->duration = block_duration / 1e9;
|
|
ds_add_packet(ds, dp);
|
|
}
|
|
}
|
|
block += lace_size[i];
|
|
}
|
|
|
|
if (ds == demuxer->video) {
|
|
mkv_d->v_skip_to_keyframe = 0;
|
|
mkv_d->skip_to_timecode = 0;
|
|
} else if (ds == demuxer->audio)
|
|
mkv_d->a_skip_to_keyframe = 0;
|
|
|
|
free(lace_size);
|
|
return 1;
|
|
}
|
|
|
|
free(lace_size);
|
|
return 0;
|
|
}
|
|
|
|
static int demux_mkv_fill_buffer(demuxer_t *demuxer, demux_stream_t *ds)
|
|
{
|
|
mkv_demuxer_t *mkv_d = (mkv_demuxer_t *) demuxer->priv;
|
|
stream_t *s = demuxer->stream;
|
|
uint64_t l;
|
|
int il, tmp;
|
|
|
|
while (1) {
|
|
while (mkv_d->cluster_size > 0) {
|
|
uint64_t block_duration = 0, block_length = 0;
|
|
int64_t block_bref = 0, block_fref = 0;
|
|
uint8_t *block = NULL;
|
|
|
|
while (mkv_d->blockgroup_size > 0) {
|
|
switch (ebml_read_id(s, &il)) {
|
|
case MATROSKA_ID_BLOCKDURATION:
|
|
block_duration = ebml_read_uint(s, &l);
|
|
if (block_duration == EBML_UINT_INVALID) {
|
|
free(block);
|
|
return 0;
|
|
}
|
|
block_duration *= mkv_d->tc_scale;
|
|
break;
|
|
|
|
case MATROSKA_ID_BLOCK:
|
|
block_length = ebml_read_length(s, &tmp);
|
|
free(block);
|
|
if (block_length > 500000000)
|
|
return 0;
|
|
block = malloc(block_length + AV_LZO_INPUT_PADDING);
|
|
demuxer->filepos = stream_tell(s);
|
|
if (stream_read(s, block, block_length) !=
|
|
(int) block_length) {
|
|
free(block);
|
|
return 0;
|
|
}
|
|
l = tmp + block_length;
|
|
break;
|
|
|
|
case MATROSKA_ID_REFERENCEBLOCK:;
|
|
int64_t num = ebml_read_int(s, &l);
|
|
if (num == EBML_INT_INVALID) {
|
|
free(block);
|
|
return 0;
|
|
}
|
|
if (num <= 0)
|
|
block_bref = num;
|
|
else
|
|
block_fref = num;
|
|
break;
|
|
|
|
case EBML_ID_INVALID:
|
|
free(block);
|
|
return 0;
|
|
|
|
default:
|
|
ebml_read_skip(s, &l);
|
|
break;
|
|
}
|
|
mkv_d->blockgroup_size -= l + il;
|
|
mkv_d->cluster_size -= l + il;
|
|
}
|
|
|
|
if (block) {
|
|
int res = handle_block(demuxer, block, block_length,
|
|
block_duration, block_bref, block_fref,
|
|
0);
|
|
free(block);
|
|
if (res < 0)
|
|
return 0;
|
|
if (res)
|
|
return 1;
|
|
}
|
|
|
|
if (mkv_d->cluster_size > 0) {
|
|
switch (ebml_read_id(s, &il)) {
|
|
case MATROSKA_ID_TIMECODE:;
|
|
uint64_t num = ebml_read_uint(s, &l);
|
|
if (num == EBML_UINT_INVALID)
|
|
return 0;
|
|
mkv_d->cluster_tc = num * mkv_d->tc_scale;
|
|
add_cluster_position(mkv_d, mkv_d->cluster_start,
|
|
mkv_d->cluster_tc);
|
|
break;
|
|
|
|
case MATROSKA_ID_BLOCKGROUP:
|
|
mkv_d->blockgroup_size = ebml_read_length(s, &tmp);
|
|
l = tmp;
|
|
break;
|
|
|
|
case MATROSKA_ID_SIMPLEBLOCK:;
|
|
int res;
|
|
block_length = ebml_read_length(s, &tmp);
|
|
if (block_length > 500000000)
|
|
return 0;
|
|
block = malloc(block_length);
|
|
demuxer->filepos = stream_tell(s);
|
|
if (stream_read(s, block, block_length) !=
|
|
(int) block_length) {
|
|
free(block);
|
|
return 0;
|
|
}
|
|
l = tmp + block_length;
|
|
res = handle_block(demuxer, block, block_length,
|
|
block_duration, block_bref,
|
|
block_fref, 1);
|
|
free(block);
|
|
mkv_d->cluster_size -= l + il;
|
|
if (res < 0)
|
|
return 0;
|
|
else if (res)
|
|
return 1;
|
|
else
|
|
mkv_d->cluster_size += l + il;
|
|
break;
|
|
|
|
case EBML_ID_INVALID:
|
|
return 0;
|
|
|
|
default:
|
|
ebml_read_skip(s, &l);
|
|
break;
|
|
}
|
|
mkv_d->cluster_size -= l + il;
|
|
}
|
|
}
|
|
|
|
while (ebml_read_id(s, &il) != MATROSKA_ID_CLUSTER) {
|
|
ebml_read_skip(s, NULL);
|
|
if (s->eof)
|
|
return 0;
|
|
}
|
|
mkv_d->cluster_start = stream_tell(s) - il;
|
|
mkv_d->cluster_size = ebml_read_length(s, NULL);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int seek_creating_index(struct demuxer *demuxer, float rel_seek_secs,
|
|
int flags)
|
|
{
|
|
struct mkv_demuxer *mkv_d = demuxer->priv;
|
|
struct stream *s = demuxer->stream;
|
|
int64_t target_tc_ns = (int64_t) (rel_seek_secs * 1e9);
|
|
if (target_tc_ns < 0)
|
|
target_tc_ns = 0;
|
|
uint64_t max_filepos = 0;
|
|
int64_t max_tc = -1;
|
|
int n = mkv_d->num_cluster_pos;
|
|
if (n > 0) {
|
|
max_filepos = mkv_d->cluster_positions[n - 1].filepos;
|
|
max_tc = mkv_d->cluster_positions[n - 1].timecode;
|
|
}
|
|
|
|
if (target_tc_ns > max_tc) {
|
|
if ((off_t) max_filepos > stream_tell(s))
|
|
stream_seek(s, max_filepos);
|
|
else
|
|
stream_seek(s, stream_tell(s) + mkv_d->cluster_size);
|
|
/* parse all the clusters upto target_filepos */
|
|
while (!s->eof) {
|
|
uint64_t start = stream_tell(s);
|
|
uint32_t type = ebml_read_id(s, NULL);
|
|
uint64_t len = ebml_read_length(s, NULL);
|
|
uint64_t end = stream_tell(s) + len;
|
|
if (type == MATROSKA_ID_CLUSTER) {
|
|
while (!s->eof && stream_tell(s) < end) {
|
|
if (ebml_read_id(s, NULL) == MATROSKA_ID_TIMECODE) {
|
|
uint64_t tc = ebml_read_uint(s, NULL);
|
|
tc *= mkv_d->tc_scale;
|
|
add_cluster_position(mkv_d, start, tc);
|
|
if (tc >= target_tc_ns)
|
|
goto enough_index;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (s->eof)
|
|
break;
|
|
stream_seek(s, end);
|
|
}
|
|
enough_index:
|
|
if (s->eof)
|
|
stream_reset(s);
|
|
}
|
|
if (!mkv_d->num_cluster_pos) {
|
|
mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] no target for seek found\n");
|
|
return -1;
|
|
}
|
|
uint64_t cluster_pos = mkv_d->cluster_positions[0].filepos;
|
|
/* Let's find the nearest cluster */
|
|
int64_t min_diff = 0xFFFFFFFFFFFFFFF;
|
|
for (int i = 0; i < mkv_d->num_cluster_pos; i++) {
|
|
int64_t diff = mkv_d->cluster_positions[i].timecode - target_tc_ns;
|
|
if (flags & SEEK_BACKWARD && diff < 0 && -diff < min_diff) {
|
|
cluster_pos = mkv_d->cluster_positions[i].filepos;
|
|
min_diff = -diff;
|
|
} else if (flags & SEEK_FORWARD
|
|
&& (diff < 0 ? -1 * diff : diff) < min_diff) {
|
|
cluster_pos = mkv_d->cluster_positions[i].filepos;
|
|
min_diff = diff < 0 ? -1 * diff : diff;
|
|
}
|
|
}
|
|
mkv_d->cluster_size = mkv_d->blockgroup_size = 0;
|
|
stream_seek(s, cluster_pos);
|
|
return 0;
|
|
}
|
|
|
|
static struct mkv_index *seek_with_cues(struct demuxer *demuxer, int seek_id,
|
|
int64_t target_timecode, int flags)
|
|
{
|
|
struct mkv_demuxer *mkv_d = demuxer->priv;
|
|
struct mkv_index *index = NULL;
|
|
|
|
/* Find the entry in the index closest to the target timecode in the
|
|
* give direction. If there are no such entries - we're trying to seek
|
|
* backward from a target time before the first entry or forward from a
|
|
* target time after the last entry - then still seek to the first/last
|
|
* entry if that's further in the direction wanted than mkv_d->last_pts.
|
|
*/
|
|
int64_t min_diff = target_timecode - (int64_t)(mkv_d->last_pts * 1e9 + 0.5);
|
|
if (flags & SEEK_BACKWARD)
|
|
min_diff = -min_diff;
|
|
min_diff = FFMAX(min_diff, 1);
|
|
for (int i = 0; i < mkv_d->num_indexes; i++)
|
|
if (seek_id < 0 || mkv_d->indexes[i].tnum == seek_id) {
|
|
int64_t diff =
|
|
target_timecode -
|
|
(int64_t) (mkv_d->indexes[i].timecode * mkv_d->tc_scale);
|
|
if (flags & SEEK_BACKWARD)
|
|
diff = -diff;
|
|
if (diff <= 0) {
|
|
if (min_diff <= 0 && diff <= min_diff)
|
|
continue;
|
|
} else if (diff >= min_diff)
|
|
continue;
|
|
min_diff = diff;
|
|
index = mkv_d->indexes + i;
|
|
}
|
|
|
|
if (index) { /* We've found an entry. */
|
|
mkv_d->cluster_size = mkv_d->blockgroup_size = 0;
|
|
stream_seek(demuxer->stream, index->filepos);
|
|
}
|
|
return index;
|
|
}
|
|
|
|
static void demux_mkv_seek(demuxer_t *demuxer, float rel_seek_secs,
|
|
float audio_delay, int flags)
|
|
{
|
|
mkv_demuxer_t *mkv_d = demuxer->priv;
|
|
uint64_t v_tnum = -1;
|
|
if (demuxer->video->id >= 0)
|
|
v_tnum = find_track_by_num(mkv_d, demuxer->video->id,
|
|
MATROSKA_TRACK_VIDEO)->tnum;
|
|
uint64_t a_tnum = -1;
|
|
if (demuxer->audio->id >= 0)
|
|
a_tnum = find_track_by_num(mkv_d, demuxer->audio->id,
|
|
MATROSKA_TRACK_AUDIO)->tnum;
|
|
if (!(flags & (SEEK_BACKWARD | SEEK_FORWARD))) {
|
|
if (flags & SEEK_ABSOLUTE || rel_seek_secs < 0)
|
|
flags |= SEEK_BACKWARD;
|
|
else
|
|
flags |= SEEK_FORWARD;
|
|
}
|
|
// Adjust the target a little bit to catch cases where the target position
|
|
// specifies a keyframe with high, but not perfect, precision.
|
|
rel_seek_secs += flags & SEEK_FORWARD ? -0.005 : 0.005;
|
|
|
|
if (!(flags & SEEK_FACTOR)) { /* time in secs */
|
|
mkv_index_t *index = NULL;
|
|
|
|
if (!(flags & SEEK_ABSOLUTE)) /* relative seek */
|
|
rel_seek_secs += mkv_d->last_pts;
|
|
rel_seek_secs = FFMAX(rel_seek_secs, 0);
|
|
int64_t target_timecode = rel_seek_secs * 1e9 + 0.5;
|
|
|
|
if (mkv_d->indexes == NULL) { /* no index was found */
|
|
if (seek_creating_index(demuxer, rel_seek_secs, flags) < 0)
|
|
return;
|
|
} else {
|
|
int seek_id = (demuxer->video->id < 0) ?
|
|
a_tnum : v_tnum;
|
|
index = seek_with_cues(demuxer, seek_id, target_timecode, flags);
|
|
if (!index)
|
|
index = seek_with_cues(demuxer, -1, target_timecode, flags);
|
|
}
|
|
|
|
if (demuxer->video->id >= 0)
|
|
mkv_d->v_skip_to_keyframe = 1;
|
|
if (flags & SEEK_FORWARD)
|
|
mkv_d->skip_to_timecode = target_timecode;
|
|
else
|
|
mkv_d->skip_to_timecode = index ? index->timecode * mkv_d->tc_scale
|
|
: 0;
|
|
mkv_d->a_skip_to_keyframe = 1;
|
|
|
|
demux_mkv_fill_buffer(demuxer, NULL);
|
|
} else if ((demuxer->movi_end <= 0) || !(flags & SEEK_ABSOLUTE))
|
|
mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] seek unsupported flags\n");
|
|
else {
|
|
stream_t *s = demuxer->stream;
|
|
uint64_t target_filepos;
|
|
mkv_index_t *index = NULL;
|
|
int i;
|
|
|
|
if (mkv_d->indexes == NULL) { /* not implemented without index */
|
|
mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] seek unsupported flags\n");
|
|
return;
|
|
}
|
|
|
|
target_filepos = (uint64_t) (demuxer->movi_end * rel_seek_secs);
|
|
for (i = 0; i < mkv_d->num_indexes; i++)
|
|
if (mkv_d->indexes[i].tnum == v_tnum)
|
|
if ((index == NULL)
|
|
|| ((mkv_d->indexes[i].filepos >= target_filepos)
|
|
&& ((index->filepos < target_filepos)
|
|
|| (mkv_d->indexes[i].filepos < index->filepos))))
|
|
index = &mkv_d->indexes[i];
|
|
|
|
if (!index)
|
|
return;
|
|
|
|
mkv_d->cluster_size = mkv_d->blockgroup_size = 0;
|
|
stream_seek(s, index->filepos);
|
|
|
|
if (demuxer->video->id >= 0)
|
|
mkv_d->v_skip_to_keyframe = 1;
|
|
mkv_d->skip_to_timecode = index->timecode * mkv_d->tc_scale;
|
|
mkv_d->a_skip_to_keyframe = 1;
|
|
|
|
demux_mkv_fill_buffer(demuxer, NULL);
|
|
}
|
|
}
|
|
|
|
static int demux_mkv_control(demuxer_t *demuxer, int cmd, void *arg)
|
|
{
|
|
mkv_demuxer_t *mkv_d = (mkv_demuxer_t *) demuxer->priv;
|
|
|
|
switch (cmd) {
|
|
case DEMUXER_CTRL_CORRECT_PTS:
|
|
return DEMUXER_CTRL_OK;
|
|
case DEMUXER_CTRL_GET_TIME_LENGTH:
|
|
if (mkv_d->duration == 0)
|
|
return DEMUXER_CTRL_DONTKNOW;
|
|
|
|
*((double *) arg) = (double) mkv_d->duration;
|
|
return DEMUXER_CTRL_OK;
|
|
|
|
case DEMUXER_CTRL_GET_PERCENT_POS:
|
|
if (mkv_d->duration == 0) {
|
|
return DEMUXER_CTRL_DONTKNOW;
|
|
}
|
|
|
|
*((int *) arg) = (int) (100 * mkv_d->last_pts / mkv_d->duration);
|
|
return DEMUXER_CTRL_OK;
|
|
|
|
case DEMUXER_CTRL_SWITCH_AUDIO:;
|
|
int new_aid = *(int *) arg;
|
|
int current_aid = demuxer->audio->id;
|
|
if (current_aid < 0)
|
|
current_aid = -1;
|
|
if (new_aid == -1) { // cycle to next
|
|
new_aid = current_aid;
|
|
while (1) {
|
|
new_aid = (new_aid + 2) % (mkv_d->num_audio_tracks + 1) - 1;
|
|
if (new_aid == -1 || demuxer->a_streams[new_aid])
|
|
break;
|
|
}
|
|
}
|
|
if (new_aid < 0 || new_aid >= mkv_d->num_audio_tracks ||
|
|
!demuxer->a_streams[new_aid])
|
|
new_aid = -2;
|
|
*(int *) arg = new_aid;
|
|
if (current_aid != new_aid)
|
|
ds_free_packs(demuxer->audio);
|
|
demuxer->audio->id = new_aid;
|
|
return DEMUXER_CTRL_OK;
|
|
|
|
case DEMUXER_CTRL_SWITCH_VIDEO:;
|
|
int new_vid = *(int *) arg;
|
|
int current_vid = demuxer->video->id;
|
|
if (current_vid < 0)
|
|
current_vid = -1;
|
|
if (new_vid == -1) { // cycle to next
|
|
new_vid = current_vid;
|
|
while (1) {
|
|
new_vid = (new_vid + 2) % (mkv_d->num_video_tracks + 1) - 1;
|
|
if (new_vid == -1 || demuxer->v_streams[new_vid])
|
|
break;
|
|
}
|
|
}
|
|
if (new_vid < 0 || new_vid >= mkv_d->num_video_tracks ||
|
|
!demuxer->v_streams[new_vid])
|
|
new_vid = -2;
|
|
*(int *) arg = new_vid;
|
|
if (current_vid != new_vid)
|
|
ds_free_packs(demuxer->video);
|
|
demuxer->video->id = new_vid;
|
|
return DEMUXER_CTRL_OK;
|
|
|
|
default:
|
|
return DEMUXER_CTRL_NOTIMPL;
|
|
}
|
|
}
|
|
|
|
const demuxer_desc_t demuxer_desc_matroska = {
|
|
"Matroska demuxer",
|
|
"mkv",
|
|
"Matroska",
|
|
"Aurelien Jacobs",
|
|
"",
|
|
DEMUXER_TYPE_MATROSKA,
|
|
1, // safe autodetect
|
|
demux_mkv_open,
|
|
demux_mkv_fill_buffer,
|
|
NULL,
|
|
mkv_free,
|
|
demux_mkv_seek,
|
|
demux_mkv_control
|
|
};
|