acba2c6b63
Kill vfr.h and vfr.cpp and use the libaegisub versions of them instead. Rather than the globals VFR_Input and VFR_Output, everything related to frame rate is now part of the video context. Most things which used to use VFR_Output now call VideoContext::TimeAtFrame etc.; video providers, rather than modifying VFR_Input directly, now have getters for their frame rates which VideoContext calls. Read-only public access to VFR_Input and VFR_Output are still provided (hopefully temporarily) for a few things which were awkward to do through VideoContext. The Avisynth provider now might correctly handle VFR MKVs which can be opened with DirectShowSource but not DSS2. Rework keyframe handling as well, so that it continues to match the vfr handling in design and implementation. Originally committed to SVN as r4662.
100 lines
3.8 KiB
C++
100 lines
3.8 KiB
C++
// Copyright (c) 2008-2009, 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 video_provider_ffmpegsource.h
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/// @see video_provider_ffmpegsource.cpp
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/// @ingroup video_input ffms
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///
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#ifdef WITH_FFMPEGSOURCE
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#ifndef AGI_PRE
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#include <vector>
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#endif
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#include "ffmpegsource_common.h"
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#include "include/aegisub/video_provider.h"
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/// @class FFmpegSourceVideoProvider
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/// @brief Implements video loading through the FFMS library.
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class FFmpegSourceVideoProvider : public VideoProvider, FFmpegSourceProvider {
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private:
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FFMS_VideoSource *VideoSource; /// video source object
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const FFMS_VideoProperties *VideoInfo; /// video properties
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int Width; /// width in pixels
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int Height; /// height in pixels
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int FrameNumber; /// current framenumber
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std::vector<int> KeyFramesList; /// list of keyframes
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agi::vfr::Framerate Timecodes; /// vfr object
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bool COMInited; /// COM initialization state
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AegiVideoFrame CurFrame; /// current video frame
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char FFMSErrMsg[1024]; /// FFMS error message
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FFMS_ErrorInfo ErrInfo; /// FFMS error codes/messages
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wxString ErrorMsg; /// wx-ified error message
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void LoadVideo(wxString filename);
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void Close();
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public:
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FFmpegSourceVideoProvider(wxString filename);
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~FFmpegSourceVideoProvider();
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const AegiVideoFrame GetFrame(int n);
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int GetPosition() const { return FrameNumber; }
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int GetFrameCount() const { return VideoInfo->NumFrames; }
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int GetWidth() const { return Width; }
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int GetHeight() const { return Height; }
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agi::vfr::Framerate GetFPS() const { return Timecodes; }
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/// @brief Gets a list of keyframes
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/// @return Returns a wxArrayInt of keyframes.
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std::vector<int> GetKeyFrames() const { return KeyFramesList; };
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wxString GetDecoderName() const { return L"FFmpegSource"; }
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/// @brief Gets the desired cache behavior.
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/// @return Returns true.
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bool WantsCaching() const { return true; }
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};
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/// @class FFmpegSourceVideoProviderFactory
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/// @brief Creates a FFmpegSource video provider.
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class FFmpegSourceVideoProviderFactory : public VideoProviderFactory {
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public:
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/// @brief Creates a FFmpegSource video provider.
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/// @param video The video filename to open.
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/// @return Returns the video provider.
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VideoProvider *CreateProvider(wxString video) { return new FFmpegSourceVideoProvider(video); }
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};
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#endif /* WITH_FFMPEGSOURCE */
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