forked from mia/Aegisub
6ee2f98349
Document all functions, class, struct, union, enum, macro, variable, typedefs. This isn't the actual document in itself but empty documentation using any old documentation if it was there. This was done using exuberant ctags to get tag info, then a TCL script to parse/remove old comments and convert them into Doxygen-style. Some notes: * Anything labeled 'DOCME' needs to be documented, @param and @return have been left blank as it would be annoying to delete the 'DOCME' from every one of those. * Some multiline comments may have been munged into single line comments * Leave the /// comments above global variables with a space, if they're harder to read then we'll be less likey to use them. * Enum comments can go after the enumeration itself '[value] /// comment' * include/aegisub/*.h haven't been converted yet, this will be done in a later commit * Some documentation blocks are in the wrong place, in the .h when it should be in the .cpp, or vice versa. See http://devel.aegisub.org/wiki/Doxygen for some details on Doxygen and a 'style guide'. Originally committed to SVN as r3312.
127 lines
4.3 KiB
C++
127 lines
4.3 KiB
C++
// Copyright (c) 2005, Rodrigo Braz Monteiro
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are met:
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//
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// * Redistributions of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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// * Neither the name of the Aegisub Group nor the names of its contributors
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// may be used to endorse or promote products derived from this software
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// without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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// POSSIBILITY OF SUCH DAMAGE.
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//
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// Aegisub Project http://www.aegisub.org/
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//
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// $Id$
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/// @file vfw_wrap.cpp
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/// @brief Reading timecode and keyframe data from AVI files using Video for Windows
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/// @ingroup video_input
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///
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#pragma once
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///////////
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// Headers
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#include "config.h"
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#include "vfw_wrap.h"
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#ifdef __WINDOWS__
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#include <vfw.h>
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#endif
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/// @brief Get keyframe list
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/// @param filename
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///
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wxArrayInt VFWWrapper::GetKeyFrames(wxString filename) {
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wxArrayInt frames;
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#ifdef __WINDOWS__
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// Init vfw
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AVIFileInit();
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// Open file
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PAVIFILE pfile;
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long hr = AVIFileOpen(&pfile, filename.wc_str(), OF_SHARE_DENY_WRITE, 0);
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if (hr != 0) {
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AVIFileExit();
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switch (hr) {
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case AVIERR_BADFORMAT:
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throw _T("Unable to open AVI file for reading keyframes:\nThe file is corrupted, incomplete or has an otherwise bad format.");
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case AVIERR_MEMORY:
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throw _T("Unable to open AVI file for reading keyframes:\nThe file could not be opened because of insufficient memory.");
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case AVIERR_FILEREAD:
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throw _T("Unable to open AVI file for reading keyframes:\nAn error occurred reading the file. There might be a problem with the storage media.");
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case AVIERR_FILEOPEN:
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throw _T("Unable to open AVI file for reading keyframes:\nThe file could not be opened. It might be in use by another application, or you do not have permission to access it.");
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case REGDB_E_CLASSNOTREG:
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throw _T("Unable to open AVI file for reading keyframes:\nThere is no handler installed for the file extension. This might indicate a fundameltal problem in your Video for Windows installation, and can be caused by extremely stripped Windows installations.");
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default:
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throw _T("Unable to open AVI file for reading keyframes:\nUnknown error.");
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}
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}
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// Open stream
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PAVISTREAM ppavi;
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hr = AVIFileGetStream(pfile,&ppavi,streamtypeVIDEO,0);
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if (hr != 0) {
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AVIFileRelease(pfile);
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AVIFileExit();
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switch (hr) {
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case AVIERR_NODATA:
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throw _T("Unable to open AVI video stream for reading keyframes:\nThe file does not contain a usable video stream.");
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case AVIERR_MEMORY:
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throw _T("Unable to open AVI video stream for reading keyframes:\nNot enough memory.");
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default:
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throw _T("Unable to open AVI video stream for reading keyframes:\nUnknown error.");
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}
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}
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// Get stream data
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AVISTREAMINFO avis;
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hr = AVIStreamInfo(ppavi,&avis,sizeof(avis));
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if (hr != 0) {
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AVIStreamRelease(ppavi);
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AVIFileRelease(pfile);
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AVIFileExit();
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throw _T("Unable to read keyframes from AVI file:\nCould not get stream information.");
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}
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size_t frame_c = avis.dwLength;
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// Loop through stream
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for (size_t i=0;i<frame_c;i++) {
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if (AVIStreamIsKeyFrame(ppavi,(int)i)) {
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frames.Add(i);
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}
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}
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// Clean up
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AVIStreamRelease(ppavi);
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AVIFileRelease(pfile);
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AVIFileExit();
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#endif
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return frames;
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}
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