Aegisub/aegisub/src/video_provider_ffmpegsource.h

122 lines
4.2 KiB
C
Raw Normal View History

// Copyright (c) 2008-2009, 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 Project http://www.aegisub.org/
//
// $Id$
/// @file video_provider_ffmpegsource.h
/// @see video_provider_ffmpegsource.cpp
/// @ingroup video_input ffms
///
///////////
// Headers
#ifdef WITH_FFMPEGSOURCE
#ifndef AGI_PRE
#include <vector>
#endif
#include "ffmpegsource_common.h"
#include "include/aegisub/video_provider.h"
#include "vfr.h"
/// @class FFmpegSourceVideoProvider
/// @brief Implements video loading through the FFMS library.
class FFmpegSourceVideoProvider : public VideoProvider, FFmpegSourceProvider {
private:
FFMS_VideoSource *VideoSource; /// video source object
const FFMS_VideoProperties *VideoInfo; /// video properties
int Width; /// width in pixels
int Height; /// height in pixels
int FrameNumber; /// current framenumber
wxArrayInt KeyFramesList; /// list of keyframes
bool KeyFramesLoaded; /// keyframe loading state
std::vector<int> TimecodesVector; /// list of timestamps
FrameRate Timecodes; /// vfr object
bool COMInited; /// COM initialization state
AegiVideoFrame CurFrame; /// current video frame
char FFMSErrMsg[1024]; /// FFMS error message
FFMS_ErrorInfo ErrInfo; /// FFMS error codes/messages
wxString ErrorMsg; /// wx-ified error message
void LoadVideo(wxString filename);
void Close();
public:
FFmpegSourceVideoProvider(wxString filename);
~FFmpegSourceVideoProvider();
const AegiVideoFrame GetFrame(int n);
int GetPosition();
int GetFrameCount();
int GetWidth();
int GetHeight();
double GetFPS();
/// @brief Reports keyframe status
/// @return Returns true if keyframes are loaded, false otherwise.
bool AreKeyFramesLoaded() { return KeyFramesLoaded; };
/// @brief Gets a list of keyframes
/// @return Returns a wxArrayInt of keyframes.
wxArrayInt GetKeyFrames() { return KeyFramesList; };
/// @brief Checks if source is VFR
/// @return Returns true.
bool IsVFR() { return true; };
/// @brief Gets a VFR framerate object
/// @return Returns the framerate object.
FrameRate GetTrueFrameRate() { return Timecodes; };
/// @brief Gets the name of the provider
/// @return Returns "FFmpegSource".
wxString GetDecoderName() { return L"FFmpegSource"; }
/// @brief Gets the desired cache behavior.
/// @return Returns true.
bool WantsCaching() { return true; }
};
/// @class FFmpegSourceVideoProviderFactory
/// @brief Creates a FFmpegSource video provider.
class FFmpegSourceVideoProviderFactory : public VideoProviderFactory {
public:
/// @brief Creates a FFmpegSource video provider.
/// @param video The video filename to open.
/// @return Returns the video provider.
VideoProvider *CreateProvider(wxString video) { return new FFmpegSourceVideoProvider(video); }
};
#endif /* WITH_FFMPEGSOURCE */