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Delete all the unused things in MatroskaWrapper (i.e. most of it), fix some derpy things, and make it throw typed exceptions. 

Originally committed to SVN as r5632.
This commit is contained in:
Thomas Goyne 2011-09-28 19:47:21 +00:00
parent 2ca9392942
commit f341a63f14
3 changed files with 137 additions and 501 deletions
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508
aegisub/src/mkv_wrap.cpp
View File

@ -38,6 +38,8 @@
#ifndef AGI_PRE
#include <errno.h>
#include <stdint.h>
#include <stdio.h>
#include <algorithm>
#include <iterator>
@ -47,249 +49,79 @@
#include <wx/choicdlg.h> // Keep this last so wxUSE_CHOICEDLG is set.
#endif
#include "ass_file.h"
#include "ass_time.h"
#include "dialog_progress.h"
#include <libaegisub/vfr.h>
#include "mkv_wrap.h"
/// DOCME
MatroskaWrapper MatroskaWrapper::wrapper;
#include "ass_file.h"
#include "ass_time.h"
#include "compat.h"
#include "dialog_progress.h"
#include "MatroskaParser.h"
/// DOCME
#define CACHESIZE 65536
class MkvStdIO : public InputStream {
public:
MkvStdIO(wxString filename);
~MkvStdIO() { if (fp) fclose(fp); }
/// @brief Constructor
///
MatroskaWrapper::MatroskaWrapper() {
file = NULL;
}
FILE *fp;
int error;
};
/// @brief Destructor
///
MatroskaWrapper::~MatroskaWrapper() {
Close();
}
#define CACHESIZE 65536
/// @brief Open file
/// @param filename
/// @param parse
///
void MatroskaWrapper::Open(wxString filename,bool parse) {
// Make sure it's closed first
Close();
// Open
void MatroskaWrapper::GetSubtitles(wxString const& filename, AssFile *target) {
MkvStdIO input(filename);
char err[2048];
input = new MkvStdIO(filename);
if (input->fp) {
file = mkv_Open(input,err,sizeof(err));
MatroskaFile *file = mkv_Open(&input, err, sizeof(err));
if (!file) throw MatroskaException(err);
// Failed parsing
if (!file) {
delete input;
throw wxString("MatroskaParser error: " + wxString(err,wxConvUTF8));
}
try {
// Get info
unsigned tracks = mkv_GetNumTracks(file);
TrackInfo *trackInfo;
std::vector<unsigned> tracksFound;
wxArrayString tracksNames;
unsigned trackToRead;
// Parse
if (parse) Parse();
}
// Haali's library variables
ulonglong startTime, endTime, filePos;
unsigned int rt, frameSize, frameFlags;
// Failed opening
else {
delete input;
throw "Unable to open Matroska file for parsing.";
}
}
// Find tracks
for (unsigned track = 0; track < tracks; track++) {
trackInfo = mkv_GetTrackInfo(file,track);
/// @brief Close file
/// @return
///
void MatroskaWrapper::Close() {
if (file) {
mkv_Close(file);
file = NULL;
delete input;
}
keyFrames.clear();
timecodes.clear();
}
/// @brief Return keyframes
/// @return
///
std::vector<int> MatroskaWrapper::GetKeyFrames() {
return keyFrames;
}
/// @brief Comparison operator
/// @param t1
/// @param t2
/// @return
///
bool operator < (MkvFrame &t1, MkvFrame &t2) {
return t1.time < t2.time;
}
/// @brief Actually parse
///
void MatroskaWrapper::Parse() {
// Clear keyframes and timecodes
keyFrames.clear();
bytePos.Clear();
timecodes.clear();
frames.clear();
rawFrames.clear();
bytePos.Clear();
// Get info
int tracks = mkv_GetNumTracks(file);
TrackInfo *trackInfo;
SegmentInfo *segInfo = mkv_GetFileInfo(file);
// Parse tracks
for (int track=0;track<tracks;track++) {
trackInfo = mkv_GetTrackInfo(file,track);
// Video track
if (trackInfo->Type == 1) {
// Variables
ulonglong startTime, endTime, filePos;
unsigned int rt, frameSize, frameFlags;
//CompressedStream *cs = NULL;
// Timecode scale
longlong timecodeScale = mkv_TruncFloat(trackInfo->TimecodeScale) * segInfo->TimecodeScale;
// Mask other tracks away
mkv_SetTrackMask(file, ~(1 << track));
// Progress bar
int totalTime = int(double(segInfo->Duration) / timecodeScale);
volatile bool canceled = false;
DialogProgress *progress = new DialogProgress(NULL,_("Parsing Matroska"),&canceled,_("Reading keyframe and timecode data from Matroska file."),0,totalTime);
progress->Show();
progress->SetProgress(0,1);
// Read frames
register int frameN = 0;
while (mkv_ReadFrame(file,0,&rt,&startTime,&endTime,&filePos,&frameSize,&frameFlags) == 0) {
// Read value
double curTime = double(startTime) / 1000000.0;
frames.push_back(MkvFrame((frameFlags & FRAME_KF) != 0,curTime,filePos));
frameN++;
// Cancelled?
if (canceled) {
Close();
throw agi::UserCancelException("Canceled");
// Subtitle track
if (trackInfo->Type == 0x11) {
wxString CodecID = wxString(trackInfo->CodecID,*wxConvCurrent);
wxString TrackName = wxString(trackInfo->Name,*wxConvCurrent);
wxString TrackLanguage = wxString(trackInfo->Language,*wxConvCurrent);
// Known subtitle format
if (CodecID == "S_TEXT/SSA" || CodecID == "S_TEXT/ASS" || CodecID == "S_TEXT/UTF8") {
tracksFound.push_back(track);
tracksNames.Add(wxString::Format("%d (%s %s): %s", track, CodecID, TrackLanguage, TrackName));
}
// Identical to (frameN % 2048) == 0,
// but much faster.
if ((frameN & (2048 - 1)) == 0)
// Update progress
progress->SetProgress(int(curTime),totalTime);
}
// Clean up progress
if (!canceled) progress->Destroy();
break;
}
}
rawFrames.reserve(frames.size());
std::copy(frames.begin(), frames.end(), std::back_inserter(rawFrames));
// Process timecodes and keyframes
frames.sort();
int i = 0;
for (std::list<MkvFrame>::iterator cur=frames.begin();cur!=frames.end();cur++) {
if (cur->isKey) keyFrames.push_back(i);
bytePos.Add(cur->filePos);
timecodes.push_back(cur->time);
i++;
}
}
static int mkv_round(double num) {
return (int)(num + .5);
}
/// @brief Set target to timecodes
/// @param target
/// @return
///
void MatroskaWrapper::SetToTimecodes(agi::vfr::Framerate &target) {
if (timecodes.size() <= 1) return;
std::vector<int> times;
times.reserve(timecodes.size());
std::transform(timecodes.begin(), timecodes.end(), std::back_inserter(times), &mkv_round);
target = agi::vfr::Framerate(times);
}
/// @brief Get subtitles
/// @param target
///
void MatroskaWrapper::GetSubtitles(AssFile *target) {
// Get info
int tracks = mkv_GetNumTracks(file);
TrackInfo *trackInfo;
//SegmentInfo *segInfo = mkv_GetFileInfo(file);
wxArrayInt tracksFound;
wxArrayString tracksNames;
int trackToRead = -1;
// Haali's library variables
ulonglong startTime, endTime, filePos;
unsigned int rt, frameSize, frameFlags;
//CompressedStream *cs = NULL;
// Find tracks
for (int track=0;track<tracks;track++) {
trackInfo = mkv_GetTrackInfo(file,track);
// Subtitle track
if (trackInfo->Type == 0x11) {
wxString CodecID = wxString(trackInfo->CodecID,*wxConvCurrent);
wxString TrackName = wxString(trackInfo->Name,*wxConvCurrent);
wxString TrackLanguage = wxString(trackInfo->Language,*wxConvCurrent);
// Known subtitle format
if (CodecID == "S_TEXT/SSA" || CodecID == "S_TEXT/ASS" || CodecID == "S_TEXT/UTF8") {
tracksFound.Add(track);
tracksNames.Add(wxString::Format("%i (",track) + CodecID + " " + TrackLanguage + "): " + TrackName);
}
}
}
// No tracks found
if (tracksFound.Count() == 0) {
target->LoadDefault(true);
Close();
throw "File has no recognised subtitle tracks.";
}
// No tracks found
if (tracksFound.empty())
throw MatroskaException("File has no recognised subtitle tracks.");
// Only one track found
else if (tracksFound.Count() == 1) {
trackToRead = tracksFound[0];
}
// Pick a track
else {
int choice = wxGetSingleChoiceIndex("Choose which track to read:","Multiple subtitle tracks found",tracksNames);
if (choice == -1) {
target->LoadDefault(true);
Close();
throw agi::UserCancelException("cancelled");
// Only one track found
if (tracksFound.size() == 1) {
trackToRead = tracksFound[0];
}
trackToRead = tracksFound[choice];
}
// Pick a track
else {
int choice = wxGetSingleChoiceIndex(_("Choose which track to read:"), _("Multiple subtitle tracks found"), tracksNames);
if (choice == -1)
throw agi::UserCancelException("cancelled");
// Picked track
if (trackToRead != -1) {
trackToRead = tracksFound[choice];
}
// Picked track
// Get codec type (0 = ASS/SSA, 1 = SRT)
trackInfo = mkv_GetTrackInfo(file,trackToRead);
wxString CodecID = wxString(trackInfo->CodecID,*wxConvCurrent);
@ -300,12 +132,7 @@ void MatroskaWrapper::GetSubtitles(AssFile *target) {
if (codecType == 0) {
// Read raw data
trackInfo = mkv_GetTrackInfo(file,trackToRead);
unsigned int privSize = trackInfo->CodecPrivateSize;
char *privData = new char[privSize+1];
memcpy(privData,trackInfo->CodecPrivate,privSize);
privData[privSize] = 0;
wxString privString(privData,wxConvUTF8);
delete[] privData;
wxString privString((const char *)trackInfo->CodecPrivate, wxConvUTF8, trackInfo->CodecPrivateSize);
// Load into file
wxString group = "[Script Info]";
@ -317,13 +144,7 @@ void MatroskaWrapper::GetSubtitles(AssFile *target) {
if (next[0] == '[') group = next;
target->AddLine(next,group,version,&group);
}
// Insert "[Events]"
//target->AddLine("",group,lasttime,version,&group);
//target->AddLine("[Events]",group,lasttime,version,&group);
//target->AddLine("Format: Layer, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text",group,lasttime,version,&group);
}
// Load default if it's SRT
else {
target->LoadDefault(false);
@ -333,10 +154,6 @@ void MatroskaWrapper::GetSubtitles(AssFile *target) {
SegmentInfo *segInfo = mkv_GetFileInfo(file);
longlong timecodeScale = mkv_TruncFloat(trackInfo->TimecodeScale) * segInfo->TimecodeScale;
// Prepare STD vector to get lines inserted
std::vector<wxString> subList;
long int order = -1;
// Progress bar
int totalTime = int(double(segInfo->Duration) / timecodeScale);
volatile bool canceled = false;
@ -344,155 +161,120 @@ void MatroskaWrapper::GetSubtitles(AssFile *target) {
progress->Show();
progress->SetProgress(0,1);
std::map<int, wxString> subList;
char *readBuf = 0;
size_t readBufSize = 0;
// Load blocks
mkv_SetTrackMask(file, ~(1 << trackToRead));
while (mkv_ReadFrame(file,0,&rt,&startTime,&endTime,&filePos,&frameSize,&frameFlags) == 0) {
// Canceled
if (canceled) {
target->LoadDefault(true);
Close();
delete readBuf;
throw agi::UserCancelException("cancelled");
}
// Read to temp
char *tmp = new char[frameSize+1];
fseek(input->fp, filePos, SEEK_SET);
fread(tmp,1,frameSize,input->fp);
tmp[frameSize] = 0;
wxString blockString(tmp,wxConvUTF8);
delete[] tmp;
if (frameSize > readBufSize) {
delete readBuf;
readBufSize = frameSize * 2;
readBuf = new char[readBufSize];
}
fseek(input.fp, filePos, SEEK_SET);
fread(readBuf, 1, frameSize, input.fp);
wxString blockString(readBuf, wxConvUTF8, frameSize);
// Get start and end times
//longlong timecodeScaleLow = timecodeScale / 100;
longlong timecodeScaleLow = 1000000;
AssTime subStart,subEnd;
subStart.SetMS(startTime / timecodeScaleLow);
subEnd.SetMS(endTime / timecodeScaleLow);
//wxLogMessage(subStart.GetASSFormated() + "-" + subEnd.GetASSFormated() + ": " + blockString);
// Process SSA/ASS
if (codecType == 0) {
// Get order number
int pos = blockString.Find(",");
wxString orderString = blockString.Left(pos);
orderString.ToLong(&order);
blockString = blockString.Mid(pos+1);
long order = 0, layer = 0;
blockString.BeforeFirst(',', &blockString).ToLong(&order);
blockString.BeforeFirst(',', &blockString).ToLong(&layer);
// Get layer number
pos = blockString.Find(",");
long int layer = 0;
if (pos) {
wxString layerString = blockString.Left(pos);
layerString.ToLong(&layer);
blockString = blockString.Mid(pos+1);
}
// Assemble final
blockString = wxString::Format("Dialogue: %i,",layer) + subStart.GetASSFormated() + "," + subEnd.GetASSFormated() + "," + blockString;
subList[order] = wxString::Format("Dialogue: %d,%s,%s,%s", layer, subStart.GetASSFormated(), subEnd.GetASSFormated(), blockString);
}
// Process SRT
else {
blockString = wxString("Dialogue: 0,") + subStart.GetASSFormated() + "," + subEnd.GetASSFormated() + ",Default,,0000,0000,0000,," + blockString;
blockString = wxString::Format("Dialogue: 0,%s,%s,%s", subStart.GetASSFormated(), subEnd.GetASSFormated(), blockString);
blockString.Replace("\r\n","\\N");
blockString.Replace("\r","\\N");
blockString.Replace("\n","\\N");
order++;
subList[subList.size()] = blockString;
}
// Insert into vector
if (subList.size() == (unsigned int)order) subList.push_back(blockString);
else {
if ((signed)(subList.size()) < order+1) subList.resize(order+1);
subList[order] = blockString;
}
// Update progress bar
progress->SetProgress(int(double(startTime) / 1000000.0),totalTime);
}
delete readBuf;
// Insert into file
wxString group = "[Events]";
int version = (CodecID == "S_TEXT/SSA");
for (unsigned int i=0;i<subList.size();i++) {
target->AddLine(subList[i],group,version,&group);
for (std::map<int, wxString>::iterator it = subList.begin(); it != subList.end(); ++it) {
target->AddLine(it->second,group,version,&group);
}
// Close progress bar
if (!canceled) progress->Destroy();
}
// No track to load
else {
target->LoadDefault(true);
catch (...) {
mkv_Close(file);
throw;
}
}
bool MatroskaWrapper::HasSubtitles(wxString const& filename) {
char err[2048];
MkvStdIO input(filename);
if (!input.fp) return false;
try {
MkvStdIO input(filename);
MatroskaFile* file = mkv_Open(&input, err, sizeof(err));
if (!file) return false;
MatroskaFile* file = mkv_Open(&input, err, sizeof(err));
if (!file) return false;
// Find tracks
int tracks = mkv_GetNumTracks(file);
for (int track = 0; track < tracks; track++) {
TrackInfo *trackInfo = mkv_GetTrackInfo(file, track);
// Find tracks
int tracks = mkv_GetNumTracks(file);
for (int track = 0; track < tracks; track++) {
TrackInfo *trackInfo = mkv_GetTrackInfo(file, track);
if (trackInfo->Type == 0x11) {
wxString CodecID = wxString(trackInfo->CodecID, *wxConvCurrent);
if (CodecID == "S_TEXT/SSA" || CodecID == "S_TEXT/ASS" || CodecID == "S_TEXT/UTF8") {
mkv_Close(file);
return true;
if (trackInfo->Type == 0x11) {
wxString CodecID = wxString(trackInfo->CodecID, *wxConvCurrent);
if (CodecID == "S_TEXT/SSA" || CodecID == "S_TEXT/ASS" || CodecID == "S_TEXT/UTF8") {
mkv_Close(file);
return true;
}
}
}
}
mkv_Close(file);
return false;
mkv_Close(file);
return false;
}
catch (...) {
// We don't care about why we couldn't read subtitles here
return false;
}
}
////////////////////////////// LOTS OF HAALI C CODE DOWN HERE ///////////////////////////////////////
#ifdef __VISUALC__
/// DOCME
#define std_fread fread
/// DOCME
#define std_fseek _fseeki64
/// DOCME
#define std_ftell _ftelli64
#else
/// DOCME
#define std_fread fread
/// DOCME
#define std_fseek fseeko
/// DOCME
#define std_ftell ftello
#endif
/// @brief STDIO class
/// @param _st
/// @param pos
/// @param buffer
/// @param count
/// @return
///
int StdIoRead(InputStream *_st, ulonglong pos, void *buffer, int count) {
MkvStdIO *st = (MkvStdIO *) _st;
size_t rd;
if (std_fseek(st->fp, pos, SEEK_SET)) {
if (fseek(st->fp, pos, SEEK_SET)) {
st->error = errno;
return -1;
}
rd = std_fread(buffer, 1, count, st->fp);
rd = fread(buffer, 1, count, st->fp);
if (rd == 0) {
if (feof(st->fp))
return 0;
@ -502,15 +284,8 @@ int StdIoRead(InputStream *_st, ulonglong pos, void *buffer, int count) {
return rd;
}
/* scan for a signature sig(big-endian) starting at file position pos
* return position of the first byte of signature or -1 if error/not found
/// @brief */
/// @param _st
/// @param start
/// @param signature
/// @return
///
/// @brief scan for a signature sig(big-endian) starting at file position pos
/// @return position of the first byte of signature or -1 if error/not found
longlong StdIoScan(InputStream *_st, ulonglong start, unsigned signature) {
MkvStdIO *st = (MkvStdIO *) _st;
int c;
@ -530,63 +305,32 @@ longlong StdIoScan(InputStream *_st, ulonglong start, unsigned signature) {
}
/// @brief This is used to limit readahead.
/// @param _st
/// @return Cache size
///
unsigned StdIoGetCacheSize(InputStream *_st) {
unsigned StdIoGetCacheSize(InputStream *st) {
return CACHESIZE;
}
/// @brief Get last error message
/// @param _st
/// @return Last error message
///
const char *StdIoGetLastError(InputStream *_st) {
MkvStdIO *st = (MkvStdIO *) _st;
return strerror(st->error);
const char *StdIoGetLastError(InputStream *st) {
return strerror(((MkvStdIO *)st)->error);
}
/// @brief Memory allocation, this is done via stdlib
/// @param _st
/// @param size
/// @return
///
void *StdIoMalloc(InputStream *_st, size_t size) {
void *StdIoMalloc(InputStream *, size_t size) {
return malloc(size);
}
/// @brief DOCME
/// @param _st
/// @param mem
/// @param size
/// @return
///
void *StdIoRealloc(InputStream *_st, void *mem, size_t size) {
return realloc(mem,size);
void *StdIoRealloc(InputStream *, void *mem, size_t size) {
return realloc(mem, size);
}
/// @brief DOCME
/// @param _st
/// @param mem
///
void StdIoFree(InputStream *_st, void *mem) {
void StdIoFree(InputStream *, void *mem) {
free(mem);
}
/// @brief DOCME
/// @param _st
/// @param cur
/// @param max
/// @return
///
int StdIoProgress(InputStream *_st, ulonglong cur, ulonglong max) {
int StdIoProgress(InputStream *, ulonglong cur, ulonglong max) {
return 1;
}
/// @brief DOCME
/// @param _st
/// @return
///
longlong StdIoGetFileSize(InputStream *_st) {
MkvStdIO *st = (MkvStdIO *) _st;
longlong epos = 0;
@ -597,9 +341,6 @@ longlong StdIoGetFileSize(InputStream *_st) {
return epos;
}
/// @brief DOCME
/// @param filename
///
MkvStdIO::MkvStdIO(wxString filename) {
read = StdIoRead;
scan = StdIoScan;
@ -610,10 +351,17 @@ MkvStdIO::MkvStdIO(wxString filename) {
memfree = StdIoFree;
progress = StdIoProgress;
getfilesize = StdIoGetFileSize;
wxFileName fname(filename);
fp = fopen(fname.GetShortPath().mb_str(wxConvUTF8),"rb");
#ifdef __VISUALC__
fp = _wfopen(fname.GetFullPath().wc_str(), L"rb");
#else
fp = fopen(fname.GetFullPath().utf8_str(), "rb");
#endif
if (fp) {
setvbuf(fp, NULL, _IOFBF, CACHESIZE);
}
else {
throw agi::FileNotFoundError(STD_STR(filename));
}
}

124
aegisub/src/mkv_wrap.h
View File

@ -35,76 +35,14 @@
///
#ifndef AGI_PRE
#include <stdint.h>
#include <stdio.h>
#include <list>
#include <vector>
#include <wx/dynarray.h>
#include <wx/string.h>
#endif
#include "MatroskaParser.h"
#include <libaegisub/exception.h>
DEFINE_SIMPLE_EXCEPTION_NOINNER(MatroskaException, agi::Exception, "matroksa_wrapper/generic")
class AssFile;
namespace agi { namespace vfr { class Framerate; } }
/// DOCME
/// @class MkvStdIO
/// @brief DOCME
///
/// DOCME
class MkvStdIO : public InputStream {
public:
MkvStdIO(wxString filename);
~MkvStdIO() { if (fp) fclose(fp); }
/// DOCME
FILE *fp;
/// DOCME
int error;
};
/// DOCME
/// @class MkvFrame
/// @brief DOCME
///
/// DOCME
class MkvFrame {
public:
/// DOCME
double time;
/// DOCME
bool isKey;
/// DOCME
int64_t filePos;
/// @brief DOCME
///
MkvFrame() {
time = 0;
isKey = false;
filePos = -1;
}
/// @brief DOCME
/// @param keyframe
/// @param timecode
/// @param _filePos
///
MkvFrame(bool keyframe,double timecode,int64_t _filePos) {
isKey = keyframe;
time = timecode;
filePos = _filePos;
}
};
bool operator < (MkvFrame &t1, MkvFrame &t2);
/// DOCME
/// @class MatroskaWrapper
@ -112,57 +50,9 @@ bool operator < (MkvFrame &t1, MkvFrame &t2);
///
/// DOCME
class MatroskaWrapper {
private:
/// DOCME
std::vector<int> keyFrames;
/// DOCME
std::vector<double> timecodes;
/// DOCME
wxArrayInt bytePos;
public:
/// DOCME
MkvStdIO *input;
/// DOCME
MatroskaFile *file;
/// DOCME
std::list<MkvFrame> frames;
/// DOCME
std::vector<MkvFrame> rawFrames;
MatroskaWrapper();
~MatroskaWrapper();
/// @brief DOCME
/// @return
///
bool IsOpen() { return file != NULL; }
void Open(wxString filename,bool parse=true);
void Close();
void Parse();
void SetToTimecodes(agi::vfr::Framerate &target);
/// @brief DOCME
/// @return
///
wxArrayInt GetBytePositions() { return bytePos; }
/// @brief DOCME
/// @return
///
unsigned int GetFrameCount() { return timecodes.size(); }
std::vector<int> GetKeyFrames();
void GetSubtitles(AssFile *target);
/// Check if the file is a matroska file with at least one subtitle track
static bool HasSubtitles(wxString const& filename);
/// DOCME
static MatroskaWrapper wrapper;
/// Load subtitles from a matroska file
static void GetSubtitles(wxString const& filename, AssFile *target);
};

6
aegisub/src/subtitle_format_mkv.cpp
View File

@ -53,8 +53,6 @@ wxArrayString MKVSubtitleFormat::GetReadWildcards() const {
return formats;
}
void MKVSubtitleFormat::ReadFile(wxString const& filename, wxString const& encoding) {
MatroskaWrapper wrap;
wrap.Open(filename, false);
wrap.GetSubtitles(GetAssFile());
void MKVSubtitleFormat::ReadFile(wxString const& filename, wxString const&) {
MatroskaWrapper::GetSubtitles(filename, GetAssFile());
}