Aegisub/aegisub/src/command/video.cpp

// Copyright (c) 2005-2010, Niels Martin Hansen
// Copyright (c) 2005-2010, Rodrigo Braz Monteiro
// Copyright (c) 2010, Amar Takhar
// 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.
//
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// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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// Aegisub Project http://www.aegisub.org/

/// @file video.cpp
/// @brief video/ commands.
/// @ingroup command
///

#include "../config.h"

#include "command.h"

#include <wx/clipbrd.h>
#include <wx/filename.h>

#include "../ass_dialogue.h"
#include "../ass_time.h"
#include "../compat.h"
#include "../frame_main.h"
#include "../main.h"
#include "../include/aegisub/context.h"
#include "../dialog_detached_video.h"
#include "../dialog_dummy_video.h"
#include "../dialog_manager.h"
#include "../dialog_jumpto.h"
#include "../dialog_video_details.h"
#include "../selection_controller.h"
#include "../standard_paths.h"
#include "../subs_grid.h"
#include "../utils.h"
#include "../video_box.h"
#include "../video_context.h"
#include "../video_display.h"
#include "../video_frame.h"
#include "../video_slider.h"

namespace {
	using cmd::Command;
/// @defgroup cmd-video Video commands.
/// @{

struct validator_video_loaded : public Command {
	CMD_TYPE(COMMAND_VALIDATE)
	bool Validate(const agi::Context *c) {
		return c->videoController->IsLoaded();
	}
};

struct validator_video_attached : public Command {
	CMD_TYPE(COMMAND_VALIDATE)
	bool Validate(const agi::Context *c) {
		return c->videoController->IsLoaded() && !c->dialog->Get<DialogDetachedVideo>();
	}
};

/// Forces video to 2.35 aspect ratio.
struct video_aspect_cinematic : public validator_video_loaded {
	CMD_NAME("video/aspect/cinematic")
	STR_MENU("&Cinematic (2.35)")
	STR_DISP("Cinematic (2.35)")
	STR_HELP("Forces video to 2.35 aspect ratio")
	CMD_TYPE(COMMAND_VALIDATE | COMMAND_RADIO)

	bool IsActive(const agi::Context *c) {
		return c->videoController->GetAspectRatioType() == 3;
	}

	void operator()(agi::Context *c) {
		c->videoController->Stop();
		c->videoController->SetAspectRatio(3);
		wxGetApp().frame->SetDisplayMode(1,-1);
	}
};

/// Forces video to a custom aspect ratio.
struct video_aspect_custom : public validator_video_loaded {
	CMD_NAME("video/aspect/custom")
	STR_MENU("C&ustom...")
	STR_DISP("Custom")
	STR_HELP("Forces video to a custom aspect ratio")
	CMD_TYPE(COMMAND_VALIDATE | COMMAND_RADIO)

	bool IsActive(const agi::Context *c) {
		return c->videoController->GetAspectRatioType() == 4;
	}

	void operator()(agi::Context *c) {
		c->videoController->Stop();

		wxString value = wxGetTextFromUser(_("Enter aspect ratio in either:\n  decimal (e.g. 2.35)\n  fractional (e.g. 16:9)\n  specific resolution (e.g. 853x480)"),_("Enter aspect ratio"),AegiFloatToString(c->videoController->GetAspectRatioValue()));
		if (value.IsEmpty()) return;

		value.MakeLower();

		// Process text
		double numval;
		if (value.ToDouble(&numval)) {
			//Nothing to see here, move along
		}
		else {
			double a,b;
			int pos=0;
			bool scale=false;

			//Why bloat using Contains when we can just check the output of Find?
			pos = value.Find(':');
			if (pos==wxNOT_FOUND) pos = value.Find('/');
			if (pos==wxNOT_FOUND&&value.Contains('x')) {
				pos = value.Find('x');
				scale=true;
			}

			if (pos>0) {
				wxString num = value.Left(pos);
				wxString denum = value.Mid(pos+1);
				if (num.ToDouble(&a) && denum.ToDouble(&b) && b!=0) {
					numval = a/b;
					if (scale) c->videoDisplay->SetZoom(b / c->videoController->GetHeight());
				}
			}
			else numval = 0.0;
		}

		// Sanity check
		if (numval < 0.5 || numval > 5.0) wxMessageBox(_("Invalid value! Aspect ratio must be between 0.5 and 5.0."),_("Invalid Aspect Ratio"),wxOK | wxICON_ERROR | wxCENTER);

		// Set value
		else {
			c->videoController->SetAspectRatio(4,numval);
			wxGetApp().frame->SetDisplayMode(1,-1);
		}
	}
};

/// Leave video on original aspect ratio.
struct video_aspect_default : public validator_video_loaded {
	CMD_NAME("video/aspect/default")
	STR_MENU("&Default")
	STR_DISP("Default")
	STR_HELP("Leave video on original aspect ratio")
	CMD_TYPE(COMMAND_VALIDATE | COMMAND_RADIO)

	bool IsActive(const agi::Context *c) {
		return c->videoController->GetAspectRatioType() == 0;
	}

	void operator()(agi::Context *c) {
		c->videoController->Stop();
		c->videoController->SetAspectRatio(0);
		wxGetApp().frame->SetDisplayMode(1,-1);
	}
};

/// Forces video to 4:3 aspect ratio.
struct video_aspect_full : public validator_video_loaded {
	CMD_NAME("video/aspect/full")
	STR_MENU("&Fullscreen (4:3)")
	STR_DISP("Fullscreen (4:3)")
	STR_HELP("Forces video to 4:3 aspect ratio")
	CMD_TYPE(COMMAND_VALIDATE | COMMAND_RADIO)

	bool IsActive(const agi::Context *c) {
		return c->videoController->GetAspectRatioType() == 1;
	}

	void operator()(agi::Context *c) {
		c->videoController->Stop();
		c->videoController->SetAspectRatio(1);
		wxGetApp().frame->SetDisplayMode(1,-1);
	}
};

/// Forces video to 16:9 aspect ratio.
struct video_aspect_wide : public validator_video_loaded {
	CMD_NAME("video/aspect/wide")
	STR_MENU("&Widescreen (16:9)")
	STR_DISP("Widescreen (16:9)")
	STR_HELP("Forces video to 16:9 aspect ratio")
	CMD_TYPE(COMMAND_VALIDATE | COMMAND_RADIO)

	bool IsActive(const agi::Context *c) {
		return c->videoController->GetAspectRatioType() == 2;
	}

	void operator()(agi::Context *c) {
		c->videoController->Stop();
		c->videoController->SetAspectRatio(2);
		wxGetApp().frame->SetDisplayMode(1,-1);
	}
};

/// Closes the currently open video file.
struct video_close : public validator_video_loaded {
	CMD_NAME("video/close")
	STR_MENU("&Close Video")
	STR_DISP("Close Video")
	STR_HELP("Closes the currently open video file")

	void operator()(agi::Context *c) {
		c->videoController->SetVideo("");
	}
};

/// Copy the current coordinates of the mouse over the video to the clipboard.
struct video_copy_coordinates : public validator_video_loaded {
	CMD_NAME("video/copy_coordinates")
	STR_MENU("Copy coordinates to Clipboard")
	STR_DISP("Copy coordinates to Clipboard")
	STR_HELP("Copy the current coordinates of the mouse over the video to the clipboard")

	void operator()(agi::Context *c) {
		SetClipboard(c->videoDisplay->GetMousePosition().Str());
	}
};

/// Detach video, displaying it in a separate Window.
struct video_detach : public validator_video_loaded {
	CMD_NAME("video/detach")
	STR_MENU("&Detach Video")
	STR_DISP("Detach Video")
	STR_HELP("Detach video, displaying it in a separate Window")
	CMD_TYPE(COMMAND_VALIDATE | COMMAND_TOGGLE)

	bool IsActive(const agi::Context *c) {
		return !!c->dialog->Get<DialogDetachedVideo>();
	}

	void operator()(agi::Context *c) {
		if (DialogDetachedVideo *d = c->dialog->Get<DialogDetachedVideo>())
			d->Close();
		else
			c->dialog->Show<DialogDetachedVideo>(c);
	}
};

/// Shows video details.
struct video_details : public validator_video_loaded {
	CMD_NAME("video/details")
	STR_MENU("Show &Video Details")
	STR_DISP("Show Video Details")
	STR_HELP("Shows video details")

	void operator()(agi::Context *c) {
		c->videoController->Stop();
		DialogVideoDetails(c).ShowModal();
	}
};

/// Toggle focus between the video slider and other things
struct video_focus_seek : public validator_video_loaded {
	CMD_NAME("video/focus_seek")
	STR_MENU("Toggle video slider focus")
	STR_DISP("Toggle video slider focus")
	STR_HELP("Toggle focus between the video slider and other things")

	void operator()(agi::Context *c) {
		wxWindow *curFocus = wxWindow::FindFocus();
		if (curFocus == c->videoSlider) {
			if (c->previousFocus) c->previousFocus->SetFocus();
		}
		else {
			c->previousFocus = curFocus;
			c->videoSlider->SetFocus();
		}
	}
};

/// Copy the current video frame to the clipboard, with subtitles
struct video_frame_copy : public validator_video_loaded {
	CMD_NAME("video/frame/copy")
	STR_MENU("Copy image to Clipboard")
	STR_DISP("Copy image to Clipboard")
	STR_HELP("Copy the currently displayed frame to the clipboard")

	void operator()(agi::Context *c) {
		SetClipboard(wxBitmap(c->videoController->GetFrame(c->videoController->GetFrameN())->GetImage(), 24));
	}
};

/// Copy the current video frame to the clipboard, without subtitles
struct video_frame_copy_raw : public validator_video_loaded {
	CMD_NAME("video/frame/copy/raw")
	STR_MENU("Copy image to Clipboard (no subtitles)")
	STR_DISP("Copy image to Clipboard (no subtitles)")
	STR_HELP("Copy the currently displayed frame to the clipboard, without the subtitles")

	void operator()(agi::Context *c) {
		SetClipboard(wxBitmap(c->videoController->GetFrame(c->videoController->GetFrameN(), true)->GetImage(), 24));
	}
};

/// Seek to the next frame.
struct video_frame_next : public validator_video_loaded {
	CMD_NAME("video/frame/next")
	STR_MENU("Next Frame")
	STR_DISP("Next Frame")
	STR_HELP("Seek to the next frame")

	void operator()(agi::Context *c) {
		c->videoController->NextFrame();
	}
};

/// Seek to the next subtitle boundary.
struct video_frame_next_boundary : public validator_video_loaded {
	CMD_NAME("video/frame/next/boundary")
	STR_MENU("Next Boundary")
	STR_DISP("Next Boundary")
	STR_HELP("Seek to the next subtitle boundary")

	void operator()(agi::Context *c) {
		AssDialogue *active_line = c->selectionController->GetActiveLine();
		if (!active_line) return;

		int target = c->videoController->FrameAtTime(active_line->Start, agi::vfr::START);
		if (target > c->videoController->GetFrameN()) {
			c->videoController->JumpToFrame(target);
			return;
		}

		target = c->videoController->FrameAtTime(active_line->End, agi::vfr::END);
		if (target > c->videoController->GetFrameN()) {
			c->videoController->JumpToFrame(target);
			return;
		}

		c->selectionController->NextLine();
		AssDialogue *new_line = c->selectionController->GetActiveLine();
		if (new_line != active_line)
		c->videoController->JumpToTime(new_line->Start);
	}
};

/// Seek to the next keyframe.
struct video_frame_next_keyframe : public validator_video_loaded {
	CMD_NAME("video/frame/next/keyframe")
	STR_MENU("Next Keyframe")
	STR_DISP("Next Keyframe")
	STR_HELP("Seek to the next keyframe")

	void operator()(agi::Context *c) {
		std::vector<int> const& kf = c->videoController->GetKeyFrames();
		std::vector<int>::const_iterator pos = lower_bound(kf.begin(), kf.end(), c->videoController->GetFrameN() + 1);

		c->videoController->JumpToFrame(pos == kf.end() ? c->videoController->GetLength() - 1 : *pos);
	}
};

/// Fast jump forward
struct video_frame_next_large : public validator_video_loaded {
	CMD_NAME("video/frame/next/large")
	STR_MENU("Fast jump forward")
	STR_DISP("Fast jump forward")
	STR_HELP("Fast jump forward")

	void operator()(agi::Context *c) {
		c->videoController->JumpToFrame(
			c->videoController->GetFrameN() +
			OPT_GET("Video/Slider/Fast Jump Step")->GetInt());
	}
};

/// Seek to the previous frame.
struct video_frame_prev : public validator_video_loaded {
	CMD_NAME("video/frame/prev")
	STR_MENU("Previous Frame")
	STR_DISP("Previous Frame")
	STR_HELP("Seek to the previous frame")

	void operator()(agi::Context *c) {
		c->videoController->PrevFrame();
	}
};

/// Seek to the previous subtitle boundary.
struct video_frame_prev_boundary : public validator_video_loaded {
	CMD_NAME("video/frame/prev/boundary")
	STR_MENU("Previous Boundary")
	STR_DISP("Previous Boundary")
	STR_HELP("Seek to the previous subtitle boundary")

	void operator()(agi::Context *c) {
		AssDialogue *active_line = c->selectionController->GetActiveLine();
		if (!active_line) return;

		int target = c->videoController->FrameAtTime(active_line->End, agi::vfr::END);
		if (target < c->videoController->GetFrameN()) {
			c->videoController->JumpToFrame(target);
			return;
		}

		target = c->videoController->FrameAtTime(active_line->Start, agi::vfr::START);
		if (target < c->videoController->GetFrameN()) {
			c->videoController->JumpToFrame(target);
			return;
		}

		c->selectionController->PrevLine();
		AssDialogue *new_line = c->selectionController->GetActiveLine();
		if (new_line != active_line)
			c->videoController->JumpToTime(new_line->End, agi::vfr::END);
	}
};

/// Seek to the previous keyframe.
struct video_frame_prev_keyframe : public validator_video_loaded {
	CMD_NAME("video/frame/prev/keyframe")
	STR_MENU("Previous Keyframe")
	STR_DISP("Previous Keyframe")
	STR_HELP("Seek to the previous keyframe")

	void operator()(agi::Context *c) {
		std::vector<int> const& kf = c->videoController->GetKeyFrames();
		if (kf.empty()) {
			c->videoController->JumpToFrame(0);
			return;
		}

		std::vector<int>::const_iterator pos =
			lower_bound(kf.begin(), kf.end(), c->videoController->GetFrameN());

		if (pos != kf.begin())
			--pos;

		c->videoController->JumpToFrame(*pos);
	}
};

/// Fast jump backwards
struct video_frame_prev_large : public validator_video_loaded {
	CMD_NAME("video/frame/prev/large")
	STR_MENU("Fast jump backwards")
	STR_DISP("Fast jump backwards")
	STR_HELP("Fast jump backwards")

	void operator()(agi::Context *c) {
		c->videoController->JumpToFrame(
			c->videoController->GetFrameN() -
			OPT_GET("Video/Slider/Fast Jump Step")->GetInt());
	}
};

static void save_snapshot(agi::Context *c, bool raw) {
	static const agi::OptionValue* ssPath = OPT_GET("Path/Screenshot");
	wxString option = lagi_wxString(ssPath->GetString());
	wxFileName videoFile(c->videoController->GetVideoName());
	wxString basepath;

	// Is it a path specifier and not an actual fixed path?
	if (option[0] == '?') {
		// If dummy video is loaded, we can't save to the video location
		if (option.StartsWith("?video") && (c->videoController->GetVideoName().Find("?dummy") != wxNOT_FOUND)) {
			// So try the script location instead
			option = "?script";
		}
		// Find out where the ?specifier points to
		basepath = StandardPaths::DecodePath(option);
		// If where ever that is isn't defined, we can't save there
		if ((basepath == "\\") || (basepath == "/")) {
			// So save to the current user's home dir instead
			basepath = wxGetHomeDir();
		}
	}
	// Actual fixed (possibly relative) path, decode it
	else basepath = DecodeRelativePath(option,StandardPaths::DecodePath("?user/"));
	basepath += "/" + videoFile.GetName();

	// Get full path
	int session_shot_count = 1;
	wxString path;
	do {
		path = wxString::Format("%s_%03d_%d.png", basepath, session_shot_count++, c->videoController->GetFrameN());
	} while (wxFileName::FileExists(path));

	c->videoController->GetFrame(c->videoController->GetFrameN(), raw)->GetImage().SaveFile(path,wxBITMAP_TYPE_PNG);
}

/// Save the current video frame, with subtitles (if any)
struct video_frame_save : public validator_video_loaded {
	CMD_NAME("video/frame/save")
	STR_MENU("Save PNG snapshot")
	STR_DISP("Save PNG snapshot")
	STR_HELP("Save the currently displayed frame to a PNG file in the video's directory")

	void operator()(agi::Context *c) {
		save_snapshot(c, false);
	}
};

/// Save the current video frame, without subtitles
struct video_frame_save_raw : public validator_video_loaded {
	CMD_NAME("video/frame/save/raw")
	STR_MENU("Save PNG snapshot (no subtitles)")
	STR_DISP("Save PNG snapshot (no subtitles)")
	STR_HELP("Save the currently displayed frame without the subtitles to a PNG file in the video's directory")

	void operator()(agi::Context *c) {
		save_snapshot(c, true);
	}
};

/// Jump to frame or time.
struct video_jump : public validator_video_loaded {
	CMD_NAME("video/jump")
	STR_MENU("&Jump to...")
	STR_DISP("Jump to")
	STR_HELP("Jump to frame or time")

	void operator()(agi::Context *c) {
		c->videoController->Stop();
		if (c->videoController->IsLoaded()) {
			DialogJumpTo(c).ShowModal();
			c->videoSlider->SetFocus();
		}
	}
};

/// Jumps the video to the end frame of current subtitle.
struct video_jump_end : public validator_video_loaded {
	CMD_NAME("video/jump/end")
	STR_MENU("Jump Video to &End")
	STR_DISP("Jump Video to End")
	STR_HELP("Jumps the video to the end frame of current subtitle")

	void operator()(agi::Context *c) {
		if (AssDialogue *active_line = c->selectionController->GetActiveLine()) {
			c->videoController->JumpToTime(active_line->End, agi::vfr::END);
		}
	}
};

/// Jumps the video to the start frame of current subtitle.
struct video_jump_start : public validator_video_loaded {
	CMD_NAME("video/jump/start")
	STR_MENU("Jump Video to &Start")
	STR_DISP("Jump Video to Start")
	STR_HELP("Jumps the video to the start frame of current subtitle")

	void operator()(agi::Context *c) {
		if (AssDialogue *active_line = c->selectionController->GetActiveLine()) {
			c->videoController->JumpToTime(active_line->Start);
		}
	}
};

/// Opens a video file.
struct video_open : public Command {
	CMD_NAME("video/open")
	STR_MENU("&Open Video...")
	STR_DISP("Open Video")
	STR_HELP("Opens a video file")

	void operator()(agi::Context *c) {
		wxString path = lagi_wxString(OPT_GET("Path/Last/Video")->GetString());
		wxString str = _("Video Formats") + " (*.asf,*.avi,*.avs,*.d2v,*.m2ts,*.mkv,*.mov,*.mp4,*.mpeg,*.mpg,*.ogm,*.webm,*.wmv,*.ts,*.y4m,*.yuv)|*.asf;*.avi;*.avs;*.d2v;*.m2ts;*.mkv;*.mov;*.mp4;*.mpeg;*.mpg;*.ogm;*.webm;*.wmv;*.ts;*.y4m;*.yuv|"
					 + _("All Files") + " (*.*)|*.*";
		wxString filename = wxFileSelector(_("Open video file"),path,"","",str,wxFD_OPEN | wxFD_FILE_MUST_EXIST);
		if (!filename.empty()) {
			c->videoController->SetVideo(filename);
			OPT_SET("Path/Last/Video")->SetString(STD_STR(wxFileName(filename).GetPath()));
		}
	}
};

/// Opens a video clip with solid colour.
struct video_open_dummy : public Command {
	CMD_NAME("video/open/dummy")
	STR_MENU("&Use Dummy Video...")
	STR_DISP("Use Dummy Video")
	STR_HELP("Opens a video clip with solid color")

	void operator()(agi::Context *c) {
		wxString fn;
		if (DialogDummyVideo::CreateDummyVideo(c->parent, fn)) {
			c->videoController->SetVideo(fn);
		}
	}
};

/// Toggle autoscrolling video when the active line changes
struct video_opt_autoscroll : public Command {
	CMD_NAME("video/opt/autoscroll")
	STR_MENU("Toggle autoscroll of video")
	STR_DISP("Toggle autoscroll of video")
	STR_HELP("Toggle autoscroll of video")
	CMD_TYPE(COMMAND_TOGGLE)

	bool IsActive(const agi::Context *) {
		return OPT_GET("Video/Subtitle Sync")->GetBool();
	}

	void operator()(agi::Context *) {
		OPT_SET("Video/Subtitle Sync")->SetBool(!OPT_GET("Video/Subtitle Sync")->GetBool());
	}
};

/// Play video.
struct video_play : public validator_video_loaded {
	CMD_NAME("video/play")
	STR_MENU("Play")
	STR_DISP("Play")
	STR_HELP("Play video starting on this position")

	void operator()(agi::Context *c) {
		c->videoController->Play();
	}
};

/// Play video for the active line.
struct video_play_line : public validator_video_loaded {
	CMD_NAME("video/play/line")
	STR_MENU("Play line")
	STR_DISP("Play line")
	STR_HELP("Play current line")

	void operator()(agi::Context *c) {
		c->videoController->PlayLine();
	}
};

/// Show a mask over the video.
struct video_show_overscan : public validator_video_loaded {
	CMD_NAME("video/show_overscan")
	STR_MENU("Show &Overscan Mask")
	STR_DISP("Show Overscan Mask")
	STR_HELP("Show a mask over the video, indicating areas that might get cropped off by overscan on televisions")
	CMD_TYPE(COMMAND_VALIDATE | COMMAND_TOGGLE)

	bool IsActive(const agi::Context *) {
		return OPT_GET("Video/Overscan Mask")->GetBool();
	}

	void operator()(agi::Context *c) {
		OPT_SET("Video/Overscan Mask")->SetBool(!OPT_GET("Video/Overscan Mask")->GetBool());
		c->videoDisplay->Render();
	}
};

/// Set zoom to 100%.
class video_zoom_100: public validator_video_attached {
public:
	CMD_NAME("video/zoom/100")
	STR_MENU("&100%")
	STR_DISP("100%")
	STR_HELP("Set zoom to 100%")
	CMD_TYPE(COMMAND_VALIDATE | COMMAND_RADIO)

	bool IsActive(const agi::Context *c) {
		return c->videoDisplay->GetZoom() == 1.;
	}

	void operator()(agi::Context *c) {
		c->videoController->Stop();
		c->videoDisplay->SetZoom(1.);
	}
};

/// Stop video playback
class video_stop: public validator_video_loaded {
public:
	CMD_NAME("video/stop")
	STR_MENU("Stop video")
	STR_DISP("Stop video")
	STR_HELP("Stop video playback")

	void operator()(agi::Context *c) {
		c->videoController->Stop();
	}
};

/// Set zoom to 200%.
class video_zoom_200: public validator_video_attached {
public:
	CMD_NAME("video/zoom/200")
	STR_MENU("&200%")
	STR_DISP("200%")
	STR_HELP("Set zoom to 200%")
	CMD_TYPE(COMMAND_VALIDATE | COMMAND_RADIO)

	bool IsActive(const agi::Context *c) {
		return c->videoDisplay->GetZoom() == 2.;
	}

	void operator()(agi::Context *c) {
		c->videoController->Stop();
		c->videoDisplay->SetZoom(2.);
	}
};

/// Set zoom to 50%.
class video_zoom_50: public validator_video_attached {
public:
	CMD_NAME("video/zoom/50")
	STR_MENU("&50%")
	STR_DISP("50%")
	STR_HELP("Set zoom to 50%")
	CMD_TYPE(COMMAND_VALIDATE | COMMAND_RADIO)

	bool IsActive(const agi::Context *c) {
		return c->videoDisplay->GetZoom() == .5;
	}

	void operator()(agi::Context *c) {
		c->videoController->Stop();
		c->videoDisplay->SetZoom(.5);
	}
};

/// Zoom video in.
struct video_zoom_in : public validator_video_attached {
	CMD_NAME("video/zoom/in")
	STR_MENU("Zoom In")
	STR_DISP("Zoom In")
	STR_HELP("Zoom video in")

	void operator()(agi::Context *c) {
		c->videoDisplay->SetZoom(c->videoDisplay->GetZoom() + .125);
	}
};

/// Zoom video out.
struct video_zoom_out : public validator_video_attached {
	CMD_NAME("video/zoom/out")
	STR_MENU("Zoom Out")
	STR_DISP("Zoom Out")
	STR_HELP("Zoom video out")

	void operator()(agi::Context *c) {
		c->videoDisplay->SetZoom(c->videoDisplay->GetZoom() - .125);
	}
};
}

/// @}

namespace cmd {
	void init_video() {
		reg(new video_aspect_cinematic);
		reg(new video_aspect_custom);
		reg(new video_aspect_default);
		reg(new video_aspect_full);
		reg(new video_aspect_wide);
		reg(new video_close);
		reg(new video_copy_coordinates);
		reg(new video_detach);
		reg(new video_details);
		reg(new video_focus_seek);
		reg(new video_frame_copy);
		reg(new video_frame_copy_raw);
		reg(new video_frame_next);
		reg(new video_frame_next_boundary);
		reg(new video_frame_next_keyframe);
		reg(new video_frame_next_large);
		reg(new video_frame_prev);
		reg(new video_frame_prev_boundary);
		reg(new video_frame_prev_keyframe);
		reg(new video_frame_prev_large);
		reg(new video_frame_save);
		reg(new video_frame_save_raw);
		reg(new video_jump);
		reg(new video_jump_end);
		reg(new video_jump_start);
		reg(new video_open);
		reg(new video_open_dummy);
		reg(new video_opt_autoscroll);
		reg(new video_play);
		reg(new video_play_line);
		reg(new video_show_overscan);
		reg(new video_stop);
		reg(new video_zoom_100);
		reg(new video_zoom_200);
		reg(new video_zoom_50);
		reg(new video_zoom_in);
		reg(new video_zoom_out);
	}
}