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mkvtoolnix/mkvinfo.cpp

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/*
mkvinfo -- utility for gathering information about Matroska files
mkvinfo.cpp
Written by Moritz Bunkus <moritz@bunkus.org>
Distributed under the GPL
see the file COPYING for details
or visit http://www.gnu.org/copyleft/gpl.html
*/
/*!
\file
\version \$Id: mkvinfo.cpp,v 1.6 2003/04/13 14:00:54 mosu Exp $
\brief retrieves and displays information about a Matroska file
\author Moritz Bunkus <moritz @ bunkus.org>
*/
#include <errno.h>
#include <ctype.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <time.h>
//SLM
#ifdef WIN32
#include <assert.h>
#else
#include <unistd.h>
#endif
#include <iostream>
#ifdef LIBEBML_GCC2
#include <typeinfo>
#endif
#include "StdIOCallback.h"
#include "EbmlHead.h"
#include "EbmlSubHead.h"
#include "EbmlStream.h"
#include "FileKax.h"
#include "KaxInfo.h"
#include "KaxInfoData.h"
#include "KaxSegment.h"
#include "KaxTracks.h"
#include "KaxTrackEntryData.h"
#include "KaxTrackAudio.h"
#include "KaxTrackVideo.h"
#include "KaxCluster.h"
#include "KaxClusterData.h"
#include "KaxBlock.h"
#include "KaxBlockAdditional.h"
#include "KaxCues.h"
#include "common.h"
#ifdef DMALLOC
#include <dmalloc.h>
#endif
#define NAME "MKVInfo"
using namespace LIBMATROSKA_NAMESPACE;
typedef struct track_t {
int tnum;
char type;
u_int64_t size;
} track_t;
track_t **tracks = NULL;
int num_tracks = 0;
StdIOCallback *in = NULL;
void add_track(track_t *s) {
tracks = (track_t **)realloc(tracks, sizeof(track_t *) * (num_tracks + 1));
if (tracks == NULL)
die("realloc");
tracks[num_tracks] = s;
num_tracks++;
}
track_t *find_track(int tnum) {
int i;
for (i = 0; i < num_tracks; i++)
if (tracks[i]->tnum == tnum)
return tracks[i];
return NULL;
}
void usage() {
fprintf(stdout,
"Usage: mkvinfo [options] inname\n\n"
" options:\n"
" inname Use 'inname' as the source.\n"
" -v, --verbose Increase verbosity. See the man page for a detailed\n"
" description of what mkvinfo outputs.\n"
" -h, --help Show this help.\n"
" -V, --version Show version information.\n");
}
static void parse_args(int argc, char **argv) {
int i;
char *infile = NULL;
verbose = 0;
for (i = 1; i < argc; i++)
if (!strcmp(argv[i], "-V") || !strcmp(argv[i], "--version")) {
fprintf(stdout, "mkvinfo v" VERSION "\n");
exit(0);
} else if (!strcmp(argv[i], "-v") || ! strcmp(argv[i], "--verbose"))
verbose++;
else if (!strcmp(argv[i], "-h") || !strcmp(argv[i], "-?") ||
!strcmp(argv[i], "--help")) {
usage();
exit(0);
} else if (infile != NULL) {
fprintf(stderr, "Error: Only one input file is allowed.\n");
exit(1);
} else
infile = argv[i];
if (infile == NULL) {
usage();
exit(0);
}
/* open input file */
try {
in = new StdIOCallback(infile, MODE_READ);
} catch (std::exception &ex) {
fprintf(stderr, "Error: Couldn't open input file %s (%s).\n", infile,
strerror(errno));
exit(1);
}
}
void process_file() {
// track_t *t;
int upper_lvl_el, exit_loop, i;
// Elements for different levels
EbmlElement *l0 = NULL, *l1 = NULL, *l2 = NULL, *l3 = NULL, *l4 = NULL;
EbmlStream *es;
u_int64_t last_pos;
u_int32_t cluster_tc;
try {
last_pos = 0;
es = new EbmlStream(static_cast<StdIOCallback &>(*in));
if (es == NULL)
die("new EbmlStream");
// Find the EbmlHead element. Must be the first one.
l0 = es->FindNextID(EbmlHead::ClassInfos, 0xFFFFFFFFL, false);
if (l0 == NULL) {
fprintf(stdout, "(%s) no head found\n", NAME);
exit(0);
}
// Don't verify its data for now.
l0->SkipData(static_cast<EbmlStream &>(*es), l0->Generic().Context);
delete l0;
fprintf(stdout, "(%s) + EBML head\n", NAME);
// Next element must be a segment
last_pos = in->getFilePointer();
l0 = es->FindNextID(KaxSegment::ClassInfos, 0xFFFFFFFFL, false);
if (l0 == NULL) {
fprintf(stdout, "(%s) No segment/level 0 element found.\n", NAME);
exit(0);
}
if (!(EbmlId(*l0) == KaxSegment::ClassInfos.GlobalId)) {
fprintf(stdout, "(%s) Next level 0 element is not a segment.\n", NAME);
exit(0);
}
fprintf(stdout, "(%s) + segment", NAME);
if (verbose > 1)
fprintf(stdout, " at %llu", last_pos);
fprintf(stdout, "\n");
upper_lvl_el = 0;
exit_loop = 0;
// We've got our segment, so let's find the tracks
last_pos = in->getFilePointer();
l1 = es->FindNextID(l0->Generic().Context, upper_lvl_el, 0xFFFFFFFFL,
true);
while (l1 != NULL) {
if (upper_lvl_el != 0)
break;
if (EbmlId(*l1) == KaxInfo::ClassInfos.GlobalId) {
// General info about this Matroska file
fprintf(stdout, "(%s) |+ segment information", NAME);
if (verbose > 1)
fprintf(stdout, " at %llu", last_pos);
fprintf(stdout, "\n");
last_pos = in->getFilePointer();
l2 = es->FindNextID(l1->Generic().Context, upper_lvl_el, 0xFFFFFFFFL,
true);
while (l2 != NULL) {
if (upper_lvl_el != 0)
break;
if (EbmlId(*l2) == KaxTimecodeScale::ClassInfos.GlobalId) {
KaxTimecodeScale &tc_scale = *static_cast<KaxTimecodeScale *>(l2);
fprintf(stdout, "(%s) | + timecode scale: %llu", NAME,
uint64(tc_scale));
if (verbose > 1)
fprintf(stdout, " at %llu", last_pos);
fprintf(stdout, "\n");
} else {
fprintf(stdout, "(%s) | + unknown element, level2: %s", NAME,
typeid(*l2).name());
if (verbose > 1)
fprintf(stdout, " at %llu", last_pos);
fprintf(stdout, "\n");
}
if (upper_lvl_el > 0) { // we're coming from l3
upper_lvl_el--;
delete l2;
l2 = l3;
if (upper_lvl_el > 0)
break;
} else {
l2->SkipData(static_cast<EbmlStream &>(*es),
l2->Generic().Context);
delete l2;
last_pos = in->getFilePointer();
l2 = es->FindNextID(l1->Generic().Context, upper_lvl_el,
0xFFFFFFFFL, true);
}
}
} else if (EbmlId(*l1) == KaxTracks::ClassInfos.GlobalId) {
// Yep, we've found our KaxTracks element. Now find all tracks
// contained in this segment.
fprintf(stdout, "(%s) |+ segment tracks", NAME);
if (verbose > 1)
fprintf(stdout, " at %llu", last_pos);
fprintf(stdout, "\n");
last_pos = in->getFilePointer();
l2 = es->FindNextID(l1->Generic().Context, upper_lvl_el, 0xFFFFFFFFL,
true);
while (l2 != NULL) {
if (upper_lvl_el != 0)
break;
if (EbmlId(*l2) == KaxTrackEntry::ClassInfos.GlobalId) {
// We actually found a track entry :) We're happy now.
fprintf(stdout, "(%s) | + a track", NAME);
if (verbose > 1)
fprintf(stdout, " at %llu", last_pos);
fprintf(stdout, "\n");
last_pos = in->getFilePointer();
l3 = es->FindNextID(l2->Generic().Context, upper_lvl_el,
0xFFFFFFFFL, true);
while (l3 != NULL) {
if (upper_lvl_el != 0)
break;
// Now evaluate the data belonging to this track
if (EbmlId(*l3) == KaxTrackNumber::ClassInfos.GlobalId) {
KaxTrackNumber &tnum = *static_cast<KaxTrackNumber *>(l3);
tnum.ReadData(es->I_O());
fprintf(stdout, "(%s) | + Track number %d", NAME,
uint8(tnum));
if (verbose > 1)
fprintf(stdout, " at %llu", last_pos);
fprintf(stdout, "\n");
if (find_track(uint8(tnum)) != NULL)
fprintf(stdout, "(%s) | + Warning: There's more than one "
"track with the number %u.\n", NAME,
uint8(tnum));
} else if (EbmlId(*l3) == KaxTrackType::ClassInfos.GlobalId) {
KaxTrackType &ttype = *static_cast<KaxTrackType *>(l3);
ttype.ReadData(es->I_O());
fprintf(stdout, "(%s) | + Track type: ", NAME);
switch (uint8(ttype)) {
case track_audio:
fprintf(stdout, "Audio");
break;
case track_video:
fprintf(stdout, "Video");
break;
case track_subtitle:
fprintf(stdout, "Subtitles");
default:
fprintf(stdout, "unknown");
break;
}
if (verbose > 1)
fprintf(stdout, " at %llu", last_pos);
fprintf(stdout, "\n");
} else if (EbmlId(*l3) == KaxTrackAudio::ClassInfos.GlobalId) {
fprintf(stdout, "(%s) | + Audio track", NAME);
if (verbose > 1)
fprintf(stdout, " at %llu", last_pos);
fprintf(stdout, "\n");
last_pos = in->getFilePointer();
l4 = es->FindNextID(l3->Generic().Context, upper_lvl_el,
0xFFFFFFFFL, true);
while (l4 != NULL) {
if (upper_lvl_el != 0)
break;
if (EbmlId(*l4) ==
KaxAudioSamplingFreq::ClassInfos.GlobalId) {
KaxAudioSamplingFreq &freq =
*static_cast<KaxAudioSamplingFreq*>(l4);
freq.ReadData(es->I_O());
fprintf(stdout, "(%s) | + Sampling frequency: %f",
NAME, float(freq));
if (verbose > 1)
fprintf(stdout, " at %llu", last_pos);
fprintf(stdout, "\n");
} else if (EbmlId(*l4) ==
KaxAudioChannels::ClassInfos.GlobalId) {
KaxAudioChannels &channels =
*static_cast<KaxAudioChannels*>(l4);
channels.ReadData(es->I_O());
fprintf(stdout, "(%s) | + Channels: %u", NAME,
uint8(channels));
if (verbose > 1)
fprintf(stdout, " at %llu", last_pos);
fprintf(stdout, "\n");
} else if (EbmlId(*l4) ==
KaxAudioBitDepth::ClassInfos.GlobalId) {
KaxAudioBitDepth &bps =
*static_cast<KaxAudioBitDepth*>(l4);
bps.ReadData(es->I_O());
fprintf(stdout, "(%s) | + Bit depth: %u", NAME,
uint8(bps));
if (verbose > 1)
fprintf(stdout, " at %llu", last_pos);
fprintf(stdout, "\n");
} else {
fprintf(stdout, "(%s) | + unknown element, level 4: %s",
NAME, typeid(*l4).name());
if (verbose > 1)
fprintf(stdout, " at %llu", last_pos);
fprintf(stdout, "\n");
}
if (upper_lvl_el > 0) {
assert(1 == 0); // this should never happen
} else {
l4->SkipData(static_cast<EbmlStream &>(*es),
l4->Generic().Context);
delete l4;
last_pos = in->getFilePointer();
l4 = es->FindNextID(l3->Generic().Context, upper_lvl_el,
0xFFFFFFFFL, true);
}
} // while (l4 != NULL)
} else if (EbmlId(*l3) == KaxTrackVideo::ClassInfos.GlobalId) {
fprintf(stdout, "(%s) | + Video track", NAME);
if (verbose > 1)
fprintf(stdout, " at %llu", last_pos);
fprintf(stdout, "\n");
last_pos = in->getFilePointer();
l4 = es->FindNextID(l3->Generic().Context, upper_lvl_el,
0xFFFFFFFFL, true);
while (l4 != NULL) {
if (upper_lvl_el != 0)
break;
if (EbmlId(*l4) == KaxVideoPixelWidth::ClassInfos.GlobalId) {
KaxVideoPixelWidth &width =
*static_cast<KaxVideoPixelWidth *>(l4);
width.ReadData(es->I_O());
fprintf(stdout, "(%s) | + Pixel width: %u", NAME,
uint16(width));
if (verbose > 1)
fprintf(stdout, " at %llu", last_pos);
fprintf(stdout, "\n");
} else if (EbmlId(*l4) ==
KaxVideoPixelHeight::ClassInfos.GlobalId) {
KaxVideoPixelHeight &height =
*static_cast<KaxVideoPixelHeight *>(l4);
height.ReadData(es->I_O());
fprintf(stdout, "(%s) | + Pixel height: %u", NAME,
uint16(height));
if (verbose > 1)
fprintf(stdout, " at %llu", last_pos);
fprintf(stdout, "\n");
} else if (EbmlId(*l4) ==
KaxVideoFrameRate::ClassInfos.GlobalId) {
KaxVideoFrameRate &framerate =
*static_cast<KaxVideoFrameRate *>(l4);
framerate.ReadData(es->I_O());
fprintf(stdout, "(%s) | + Frame rate: %f", NAME,
float(framerate));
if (verbose > 1)
fprintf(stdout, " at %llu", last_pos);
fprintf(stdout, "\n");
} else {
fprintf(stdout, "(%s) | + unknown element, level 4: %s",
NAME, typeid(*l4).name());
if (verbose > 1)
fprintf(stdout, " at %llu", last_pos);
fprintf(stdout, "\n");
}
if (upper_lvl_el > 0) {
assert(1 == 0); // this should never happen
} else {
l4->SkipData(static_cast<EbmlStream &>(*es),
l4->Generic().Context);
delete l4;
last_pos = in->getFilePointer();
l4 = es->FindNextID(l3->Generic().Context, upper_lvl_el,
0xFFFFFFFFL, true);
}
} // while (l4 != NULL)
} else if (EbmlId(*l3) == KaxCodecID::ClassInfos.GlobalId) {
KaxCodecID &codec_id = *static_cast<KaxCodecID*>(l3);
codec_id.ReadData(es->I_O());
fprintf(stdout, "(%s) | + Codec ID: %s", NAME,
&binary(codec_id));
if (verbose > 1)
fprintf(stdout, " at %llu", last_pos);
fprintf(stdout, "\n");
} else if (EbmlId(*l3) == KaxCodecPrivate::ClassInfos.GlobalId) {
KaxCodecPrivate &c_priv = *static_cast<KaxCodecPrivate*>(l3);
c_priv.ReadData(es->I_O());
fprintf(stdout, "(%s) | + CodecPrivate, length %llu",
NAME, c_priv.GetSize());
if (verbose > 1)
fprintf(stdout, " at %llu", last_pos);
fprintf(stdout, "\n");
} else {
fprintf(stdout, "(%s) | + unknown element, level 3: %s",
NAME, typeid(*l3).name());
if (verbose > 1)
fprintf(stdout, " at %llu", last_pos);
fprintf(stdout, "\n");
}
if (upper_lvl_el > 0) { // we're coming from l4
upper_lvl_el--;
delete l3;
l3 = l4;
if (upper_lvl_el > 0)
break;
} else {
l3->SkipData(static_cast<EbmlStream &>(*es),
l3->Generic().Context);
delete l3;
last_pos = in->getFilePointer();
l3 = es->FindNextID(l2->Generic().Context, upper_lvl_el,
0xFFFFFFFFL, true);
}
} // while (l3 != NULL)
} else {
fprintf(stdout, "(%s) | + unknown element, level 2: %s", NAME,
typeid(*l2).name());
if (verbose > 1)
fprintf(stdout, " at %llu", last_pos);
fprintf(stdout, "\n");
}
if (upper_lvl_el > 0) { // we're coming from l3
upper_lvl_el--;
delete l2;
l2 = l3;
if (upper_lvl_el > 0)
break;
} else {
l2->SkipData(static_cast<EbmlStream &>(*es),
l2->Generic().Context);
delete l2;
last_pos = in->getFilePointer();
l2 = es->FindNextID(l1->Generic().Context, upper_lvl_el,
0xFFFFFFFFL, true);
}
} // while (l2 != NULL)
} else if (EbmlId(*l1) == KaxCluster::ClassInfos.GlobalId) {
fprintf(stdout, "(%s) |+ found cluster", NAME);
if (verbose > 1)
fprintf(stdout, " at %llu", last_pos);
fprintf(stdout, "\n");
if (verbose == 0)
exit(0);
last_pos = in->getFilePointer();
l2 = es->FindNextID(l1->Generic().Context, upper_lvl_el, 0xFFFFFFFFL,
true);
while (l2 != NULL) {
if (upper_lvl_el != 0)
break;
if (EbmlId(*l2) == KaxClusterTimecode::ClassInfos.GlobalId) {
KaxClusterTimecode &ctc = *static_cast<KaxClusterTimecode *>(l2);
ctc.ReadData(es->I_O());
cluster_tc = uint32(ctc);
fprintf(stdout, "(%s) | + cluster timecode: %u", NAME,
cluster_tc);
if (verbose > 1)
fprintf(stdout, " at %llu", last_pos);
fprintf(stdout, "\n");
} else if (EbmlId(*l2) == KaxBlockGroup::ClassInfos.GlobalId) {
fprintf(stdout, "(%s) | + block group", NAME);
if (verbose > 1)
fprintf(stdout, " at %llu", last_pos);
fprintf(stdout, "\n");
last_pos = in->getFilePointer();
l3 = es->FindNextID(l2->Generic().Context, upper_lvl_el,
0xFFFFFFFFL, false);
while (l3 != NULL) {
if (upper_lvl_el > 0)
break;
if (EbmlId(*l3) == KaxBlock::ClassInfos.GlobalId) {
KaxBlock &block = *static_cast<KaxBlock *>(l3);
block.ReadData(es->I_O());
fprintf(stdout, "(%s) | + block (track number %u, %d frame(s)"
", timecode %u)", NAME, block.TrackNum(),
block.NumberFrames(), block.Timecod() + cluster_tc);
if (verbose > 1)
fprintf(stdout, " at %llu", last_pos);
fprintf(stdout, "\n");
for (i = 0; i < (int)block.NumberFrames(); i++) {
DataBuffer &data = block.GetBuffer(i);
fprintf(stdout, "(%s) | + frame with size %u\n", NAME,
data.Size());
}
} else if (EbmlId(*l3) ==
KaxBlockAdditional::ClassInfos.GlobalId) {
KaxBlockAdditional &add =
*static_cast<KaxBlockAdditional *>(l3);
add.ReadData(es->I_O());
fprintf(stdout, "(%s) | + block additional", NAME);
if (verbose > 1)
fprintf(stdout, " at %llu", last_pos);
fprintf(stdout, "\n");
last_pos = in->getFilePointer();
l4 = es->FindNextID(l3->Generic().Context, upper_lvl_el,
0xFFFFFFFFL, true);
while (l4 != NULL) {
if (upper_lvl_el != 0)
break;
fprintf(stdout, "(%s) | + unknown element, level 4: %s",
NAME, typeid(*l4).name());
if (verbose > 1)
fprintf(stdout, " at %llu", last_pos);
fprintf(stdout, "\n");
if (upper_lvl_el > 0) {
assert(1 == 0); // this should never happen
} else {
l4->SkipData(static_cast<EbmlStream &>(*es),
l4->Generic().Context);
delete l4;
last_pos = in->getFilePointer();
l4 = es->FindNextID(l3->Generic().Context, upper_lvl_el,
0xFFFFFFFFL, true);
}
} // while (l4 != NULL)
} else {
fprintf(stdout, "(%s) | + unknown element, level 3: %s",
NAME, typeid(*l3).name());
if (verbose > 1)
fprintf(stdout, " at %llu", last_pos);
fprintf(stdout, "\n");
}
if (upper_lvl_el > 0) { // we're coming from l4
upper_lvl_el--;
delete l3;
l3 = l4;
if (upper_lvl_el > 0)
break;
} else {
l3->SkipData(static_cast<EbmlStream &>(*es),
l3->Generic().Context);
delete l3;
last_pos = in->getFilePointer();
l3 = es->FindNextID(l2->Generic().Context, upper_lvl_el,
0xFFFFFFFFL, true);
}
} // while (l3 != NULL)
} else {
fprintf(stdout, "(%s) | + unknown element, level 2: %s", NAME,
typeid(*l2).name());
if (verbose > 1)
fprintf(stdout, " at %llu", last_pos);
fprintf(stdout, "\n");
}
if (upper_lvl_el > 0) { // we're coming from l3
upper_lvl_el--;
delete l2;
l2 = l3;
if (upper_lvl_el > 0)
break;
} else {
l2->SkipData(static_cast<EbmlStream &>(*es),
l2->Generic().Context);
delete l2;
last_pos = in->getFilePointer();
l2 = es->FindNextID(l1->Generic().Context, upper_lvl_el,
0xFFFFFFFFL, true);
// if (l2) printf("[mkv] [fb]? 2 : %s\n", typeid(*l2).name());
}
} // while (l2 != NULL)
} else {
fprintf(stdout, "(%s) |+ unknown element, level 1: %s", NAME,
typeid(*l1).name());
if (verbose > 1)
fprintf(stdout, " at %llu", last_pos);
fprintf(stdout, "\n");
}
if (exit_loop) // we've found the first cluster, so get out
break;
if (upper_lvl_el > 0) { // we're coming from l2
upper_lvl_el--;
delete l1;
l1 = l2;
if (upper_lvl_el > 0)
break;
} else {
l1->SkipData(static_cast<EbmlStream &>(*es), l1->Generic().Context);
delete l1;
last_pos = in->getFilePointer();
l1 = es->FindNextID(l0->Generic().Context, upper_lvl_el, 0xFFFFFFFFL,
true);
}
} // while (l1 != NULL)
} catch (std::exception &ex) {
fprintf(stdout, "(%s) caught exception\n", NAME);
}
}
int main(int argc, char **argv) {
nice(2);
parse_args(argc, argv);
process_file();
return 0;
}
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