166 lines
5 KiB
C++
166 lines
5 KiB
C++
// Copyright (c) 2009, Karl Blomster
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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 quicktime_common.cpp
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/// @brief Common code between QuickTime-based video and audio providers
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/// @ingroup quicktime
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///
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#include "config.h"
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#ifdef WITH_QUICKTIME
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#ifndef AGI_PRE
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#include <wx/filename.h>
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#include <wx/string.h>
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#endif
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#include "quicktime_common.h"
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/// DOCME
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int QuickTimeProvider::qt_initcount = 0;
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/// DOCME
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GWorldPtr QuickTimeProvider::default_gworld = NULL;
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/// @brief DOCME
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///
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void QuickTimeProvider::InitQuickTime() {
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OSErr qt_err;
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#ifdef WIN32
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qt_err = InitializeQTML(0L);
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QTCheckError(qt_err, wxString(_T("Failed to initialize QTML (do you have QuickTime installed?)")));
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#endif
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qt_err = EnterMovies();
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QTCheckError(qt_err, wxString(_T("EnterMovies failed")));
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// have we been inited before?
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if (qt_initcount <= 0) {
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// We haven't, allocate an offscreen render target.
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// We need to do this before we actually open anything, or quicktime may crash. (heh)
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Rect def_box;
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def_box.top = 0;
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def_box.left = 0;
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def_box.bottom = 320; // pick some random dimensions for now;
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def_box.right = 240; // we won't actually use this buffer to render anything
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QDErr qd_err = NewGWorld(&default_gworld, 32, &def_box, NULL, NULL, keepLocal);
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if (qd_err != noErr)
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throw wxString(_T("Failed to initialize temporary offscreen drawing buffer"));
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SetGWorld(default_gworld, NULL);
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}
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qt_initcount++;
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}
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/// @brief DOCME
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///
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void QuickTimeProvider::DeInitQuickTime() {
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#ifdef WIN32
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// calls to InitializeQTML() must be balanced with an equal number of calls to TerminateQTML()
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TerminateQTML();
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#endif
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qt_initcount--;
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if (qt_initcount <= 0) {
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ExitMovies();
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DisposeGWorld(default_gworld);
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}
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}
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/// @brief convert a wxstring containing a filename to a QT data reference
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/// @param string
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/// @param dataref
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/// @param dataref_type
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///
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void QuickTimeProvider::wxStringToDataRef(const wxString &string, Handle *dataref, OSType *dataref_type) {
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// convert filename, first to a CFStringRef...
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wxString wx_filename = wxFileName(string).GetShortPath();
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CFStringRef qt_filename = CFStringCreateWithCString(NULL, wx_filename.utf8_str(), kCFStringEncodingUTF8);
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// and then to a data reference
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OSErr qt_err = QTNewDataReferenceFromFullPathCFString(qt_filename, kQTNativeDefaultPathStyle, 0,
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dataref, dataref_type);
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QTCheckError(qt_err, wxString(_T("Failed to convert filename to data reference")));
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}
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/// @brief check if this error code signifies an error, and if it does, throw an exception
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/// @param err
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/// @param errmsg
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///
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void QuickTimeProvider::QTCheckError(OSErr err, wxString errmsg) {
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if (err != noErr)
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throw errmsg;
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/* CheckError(err, errmsg.c_str()); // I wonder if this actually works on Mac, and if so, what it does */
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}
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/// @brief DOCME
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/// @param err
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/// @param errmsg
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/// @return
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///
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void QuickTimeProvider::QTCheckError(OSStatus err, wxString errmsg) {
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if (err != noErr)
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throw errmsg;
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}
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/// @brief return true if QT considers file openable
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/// @param dataref
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/// @param dataref_type
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///
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bool QuickTimeProvider::CanOpen(const Handle& dataref, const OSType dataref_type) {
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Boolean can_open;
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Boolean prefer_img;
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OSErr qt_err = CanQuickTimeOpenDataRef(dataref, dataref_type, NULL, &can_open, &prefer_img, 0);
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QTCheckError(qt_err, wxString(_T("Checking if file is openable failed")));
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// don't bother trying to open things quicktime considers images
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if (can_open && !prefer_img)
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return true;
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else
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return false;
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}
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#endif /* WITH_QUICKTIME */
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