285 lines
7.4 KiB
C++
285 lines
7.4 KiB
C++
// Copyright (c) 2005-2007, 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 video_context.h
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/// @see video_context.cpp
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/// @ingroup video
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///
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#ifndef AGI_PRE
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#include <time.h>
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#include <list>
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#include <memory>
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#include <wx/glcanvas.h>
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#include <wx/timer.h>
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#include <wx/stopwatch.h>
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#endif
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#if ! wxUSE_GLCANVAS
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#error "Aegisub requires wxWidgets to be compiled with OpenGL support."
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#endif
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#include <libaegisub/vfr.h>
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class AegiVideoFrame;
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class SubtitlesGrid;
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class AudioProvider;
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class AudioDisplay;
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class AssDialogue;
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class KeyFrameFile;
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class SubtitlesProviderErrorEvent;
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class ThreadedFrameSource;
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class VideoProvider;
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class VideoProviderErrorEvent;
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class VideoDisplay;
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namespace agi {
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class OptionValue;
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}
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/// DOCME
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/// @class VideoContext
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/// @brief DOCME
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///
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/// DOCME
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class VideoContext : public wxEvtHandler {
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friend class AudioProvider;
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friend class KeyFrameFile;
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private:
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/// DOCME
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std::list<VideoDisplay*> displayList;
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/// DOCME
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std::tr1::shared_ptr<VideoProvider> videoProvider;
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/// DOCME
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std::auto_ptr<ThreadedFrameSource> provider;
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/// Filename of currently open video
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wxString videoFile;
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/// DOCME
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std::vector<int> keyFrames;
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/// DOCME
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wxString keyFramesFilename;
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/// DOCME
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wxMutex playMutex;
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/// DOCME
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wxTimer playback;
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/// DOCME
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wxStopWatch playTime;
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/// DOCME
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int startFrame;
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/// DOCME
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int endFrame;
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/// DOCME
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int playNextFrame;
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/// DOCME
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int nextFrame;
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/// DOCME
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bool isPlaying;
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/// DOCME
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bool keepAudioSync;
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/// DOCME
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int frame_n;
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/// DOCME
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int length;
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/// DOCME
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double arValue;
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/// DOCME
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int arType;
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bool hasSubtitles;
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wxString ovrTimecodeFile;
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const agi::OptionValue* playAudioOnStep;
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void OnPlayTimer(wxTimerEvent &event);
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agi::vfr::Framerate videoFPS;
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agi::vfr::Framerate ovrFPS;
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bool singleFrame;
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void OnVideoError(VideoProviderErrorEvent const& err);
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void OnSubtitlesError(SubtitlesProviderErrorEvent const& err);
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public:
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/// DOCME
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SubtitlesGrid *grid;
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/// File name of currently open video, if any
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wxString videoName;
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/// DOCME
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AudioDisplay *audio;
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const agi::vfr::Framerate &VFR_Input;
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const agi::vfr::Framerate &VFR_Output;
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VideoContext();
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~VideoContext();
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void AddDisplay(VideoDisplay *display);
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void RemoveDisplay(VideoDisplay *display);
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/// @brief Get the video provider used for the currently open video
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VideoProvider *GetProvider() const { return videoProvider.get(); }
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std::tr1::shared_ptr<AegiVideoFrame> GetFrame(int n, bool raw = false);
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void GetFrameAsync(int n);
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/// @brief Save the currently displayed frame as an image
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/// @param raw Should the frame have subtitles?
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void SaveSnapshot(bool raw);
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/// @brief Is there a video loaded?
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bool IsLoaded() const { return !!videoProvider.get(); }
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/// @brief Is the video currently playing?
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bool IsPlaying() const { return isPlaying; }
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/// @brief Does the video file loaded have muxed subtitles that we can load?
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bool HasSubtitles() const { return hasSubtitles; }
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/// @brief DOCME
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/// @param sync
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/// @return
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void EnableAudioSync(bool sync = true) { keepAudioSync = sync; }
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/// @brief Get the width of the currently open video
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int GetWidth() const;
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/// @brief Get the height of the currently open video
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int GetHeight() const;
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/// @brief Get the length in frames of the currently open video
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int GetLength() const { return length; }
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/// @brief Get the current frame number
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int GetFrameN() const { return frame_n; }
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double GetARFromType(int type) const;
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void SetAspectRatio(int type,double value=1.0);
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/// @brief DOCME
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/// @return
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int GetAspectRatioType() const { return arType; }
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/// @brief DOCME
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/// @return
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double GetAspectRatioValue() const { return arValue; }
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/// @brief Open a new video
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/// @param filename Video to open, or empty to close the current video
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void SetVideo(const wxString &filename);
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/// @brief Close the video, keyframes and timecodes
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void Reset();
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/// @brief Close and reopen the current video
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void Reload();
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/// @brief Jump to the beginning of a frame
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/// @param n Frame number to jump to
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void JumpToFrame(int n);
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/// @brief Jump to a time
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/// @param ms Time to jump to in milliseconds
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/// @param end Type of time
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void JumpToTime(int ms, agi::vfr::Time end = agi::vfr::START);
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/// @brief Refresh the subtitle provider
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void Refresh();
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/// @brief Update the video display
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/// @param full Recalculate size and slider lengths
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/// @param seek Update is just a seek and file has not changed
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void UpdateDisplays(bool full, bool seek = false);
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/// @brief Get the height and width of the current script
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/// @param[out] w Width
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/// @param[out] h Height
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///
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/// This probably shouldn't be in VideoContext
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void GetScriptSize(int &w,int &h);
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/// Starting playing the video
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void Play();
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/// Play the next frame then stop
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void PlayNextFrame();
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/// Play the previous frame then stop
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void PlayPrevFrame();
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/// Seek to the beginning of the current line, then play to the end of it
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void PlayLine();
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/// Stop playing
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void Stop();
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const std::vector<int>& GetKeyFrames() const { return keyFrames; };
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wxString GetKeyFramesName() const { return keyFramesFilename; }
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void LoadKeyframes(wxString filename);
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void SaveKeyframes(wxString filename);
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void CloseKeyframes();
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bool OverKeyFramesLoaded() const { return !keyFramesFilename.empty(); }
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bool KeyFramesLoaded() const { return !keyFrames.empty(); }
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wxString GetTimecodesName() const { return ovrTimecodeFile; }
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void LoadTimecodes(wxString filename);
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void SaveTimecodes(wxString filename);
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void CloseTimecodes();
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bool OverTimecodesLoaded() const { return ovrFPS.IsLoaded(); }
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bool TimecodesLoaded() const { return videoFPS.IsLoaded() || ovrFPS.IsLoaded(); };
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const agi::vfr::Framerate& FPS() const { return ovrFPS.IsLoaded() ? ovrFPS : videoFPS; }
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int TimeAtFrame(int frame, agi::vfr::Time type = agi::vfr::EXACT) const;
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int FrameAtTime(int time, agi::vfr::Time type = agi::vfr::EXACT) const;
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static VideoContext *Get();
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static void OnExit();
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DECLARE_EVENT_TABLE()
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};
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