Aegisub/core/vfw_wrap.cpp

91 lines
2.7 KiB
C++

// Copyright (c) 2005, Rodrigo Braz Monteiro
// 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
//
#pragma once
///////////
// Headers
#include "vfw_wrap.h"
#include <vfw.h>
/////////////////////
// Get keyframe list
wxArrayInt VFWWrapper::GetKeyFrames(wxString filename) {
wxArrayInt frames;
char buffer[512];
strcpy(buffer,filename.mb_str(wxConvLocal));
// Init vfw
AVIFileInit();
// Open file
PAVIFILE pfile;
long hr = AVIFileOpen(&pfile, filename.wc_str(), OF_SHARE_DENY_WRITE, 0);
if (hr != 0) {
AVIFileExit();
throw _T("Unable to open file.");
}
// Open stream
PAVISTREAM ppavi;
hr = AVIFileGetStream(pfile,&ppavi,streamtypeVIDEO,0);
if (hr != 0) {
AVIFileRelease(pfile);
AVIFileExit();
throw _T("Unable to open stream.");
}
// Get stream data
AVISTREAMINFO avis;
AVIStreamInfo(ppavi,&avis,sizeof(avis));
size_t frame_c = avis.dwLength;
// Loop through stream
for (size_t i=0;i<frame_c;i++) {
if (AVIStreamIsKeyFrame(ppavi,i)) {
frames.Add(i);
}
}
// Clean up
AVIFileRelease(pfile);
AVIFileExit();
return frames;
}