Aegisub/aegisub/ffmpegsource_common.cpp

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// Copyright (c) 2008, Karl Blomster
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
// * Neither the name of the Aegisub Group nor the names of its contributors
// may be used to endorse or promote products derived from this software
// without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//
// -----------------------------------------------------------------------------
//
// AEGISUB
//
// Website: http://aegisub.cellosoft.com
// Contact: mailto:zeratul@cellosoft.com
//
#ifdef WITH_FFMPEGSOURCE
///////////
// Headers
#include "ffmpegsource_common.h"
#include "md5.h"
#include "standard_paths.h"
#include "main.h"
#include "frame_main.h"
///////////////
// Update indexing progress
int FFMS_CC FFmpegSourceProvider::UpdateIndexingProgress(int State, int64_t Current, int64_t Total, void *Private) {
IndexingProgressDialog *Progress = (IndexingProgressDialog *)Private;
if (Progress->IndexingCanceled)
return 1;
// noone cares about a little bit of a rounding error here anyway
Progress->ProgressDialog->SetProgress((1000*Current)/Total, 1000);
return 0;
}
///////////
// Do indexing
FrameIndex *FFmpegSourceProvider::DoIndexing(FrameIndex *Index, wxString FileNameWX, wxString CacheName, int Trackmask, bool IgnoreDecodeErrors) {
char FFMSErrMsg[1024];
unsigned MsgSize = sizeof(FFMSErrMsg);
wxString MsgString;
// set up progress dialog callback
IndexingProgressDialog Progress;
Progress.IndexingCanceled = false;
Progress.ProgressDialog = new DialogProgress(AegisubApp::Get()->frame, _("Indexing"), &Progress.IndexingCanceled, _("Reading timecodes and frame/sample data"), 0, 1);
Progress.ProgressDialog->Show();
Progress.ProgressDialog->SetProgress(0,1);
// index all audio tracks
Index = FFMS_MakeIndex(FileNameWX.char_str(), Trackmask, FFMSTrackMaskNone, NULL, IgnoreDecodeErrors, FFmpegSourceProvider::UpdateIndexingProgress, &Progress, FFMSErrMsg, MsgSize);
if (!Index) {
Progress.ProgressDialog->Destroy();
wxString temp(FFMSErrMsg, wxConvUTF8);
MsgString << _T("Failed to index: ") << temp;
throw MsgString;
}
Progress.ProgressDialog->Destroy();
// write index to disk for later use
// ignore write errors for now
FFMS_WriteIndex(CacheName.char_str(), Index, FFMSErrMsg, MsgSize);
/*if (FFMS_WriteIndex(CacheName.char_str(), Index, FFMSErrMsg, MsgSize)) {
wxString temp(FFMSErrMsg, wxConvUTF8);
MsgString << _T("Failed to write index: ") << temp;
throw MsgString;
} */
return Index;
}
/////////////////////
// Creates a name for the ffmpegsource2 index and prepares the folder if it doesn't exist
// method by amz
wxString FFmpegSourceProvider::GetCacheFilename(const wxString& filename)
{
// Get the size of the file to be hashed
wxFileOffset len = 0;
{
wxFile file(filename,wxFile::read);
if (file.IsOpened()) len = file.Length();
}
// Generate string to be hashed
wxString toHash = filename + wxString::Format(_T(":%i"),len);
// Get the MD5 digest of the string
md5_state_t state;
md5_byte_t digest[16];
md5_init(&state);
md5_append(&state,(md5_byte_t*)toHash.c_str(),toHash.Length()*sizeof(wxChar));
md5_finish(&state,digest);
// Generate the filename
unsigned int *md5 = (unsigned int*) digest;
wxString result = wxString::Format(_T("?user/ffms2cache/%08X%08X%08X%08X.ffindex"),md5[0],md5[1],md5[2],md5[3]);
result = StandardPaths::DecodePath(result);
// Ensure that folder exists
wxFileName fn(result);
wxString dir = fn.GetPath();
if (!wxFileName::DirExists(dir)) {
wxFileName::Mkdir(dir);
}
wxFileName dirfn(dir);
return dirfn.GetShortPath() + _T("/") + fn.GetFullName();
}
#endif WITH_FFMPEGSOURCE