3a58a48e1a
Originally committed to SVN as r4121.
702 lines
16 KiB
C++
702 lines
16 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.cpp
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/// @brief Keep track of loaded video and video displays
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/// @ingroup video
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///
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////////////
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// Includes
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#include "config.h"
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#ifndef AGI_PRE
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#include <string.h>
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#include <wx/clipbrd.h>
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#include <wx/config.h>
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#include <wx/filename.h>
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#include <wx/image.h>
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#endif
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#ifdef __APPLE__
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#include <OpenGL/GL.h>
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#include <OpenGL/glu.h>
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#else
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#include <GL/gl.h>
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#include <GL/glu.h>
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#endif
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#include "ass_dialogue.h"
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#include "ass_exporter.h"
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#include "ass_file.h"
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#include "ass_style.h"
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#include "ass_time.h"
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#include "audio_display.h"
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#include "options.h"
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#include "standard_paths.h"
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#include "subs_edit_box.h"
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#include "subs_grid.h"
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#include "subtitles_provider_manager.h"
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#include "utils.h"
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#include "vfr.h"
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#include "video_box.h"
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#include "video_context.h"
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#include "video_display.h"
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#include "video_provider_manager.h"
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#include "visual_tool.h"
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///////
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// IDs
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enum {
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/// DOCME
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VIDEO_PLAY_TIMER = 1300
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};
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///////////////
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// Event table
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BEGIN_EVENT_TABLE(VideoContext, wxEvtHandler)
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EVT_TIMER(VIDEO_PLAY_TIMER,VideoContext::OnPlayTimer)
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END_EVENT_TABLE()
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/// DOCME
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VideoContext *VideoContext::instance = NULL;
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/// @brief Constructor
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///
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VideoContext::VideoContext() {
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// Set GL context
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glContext = NULL;
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ownGlContext = false;
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// Set options
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audio = NULL;
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provider = NULL;
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subsProvider = NULL;
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curLine = NULL;
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loaded = false;
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keyFramesLoaded = false;
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overKeyFramesLoaded = false;
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frame_n = 0;
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length = 0;
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fps = 0;
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arType = 0;
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arValue = 1.0;
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isPlaying = false;
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nextFrame = -1;
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keepAudioSync = true;
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}
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/// @brief Destructor
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///
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VideoContext::~VideoContext () {
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Reset();
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if (ownGlContext)
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delete glContext;
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glContext = NULL;
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}
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/// @brief Get Instance
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/// @return
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///
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VideoContext *VideoContext::Get() {
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if (!instance) {
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instance = new VideoContext;
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}
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return instance;
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}
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/// @brief Clear
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///
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void VideoContext::Clear() {
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instance->audio = NULL;
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delete instance;
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instance = NULL;
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}
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/// @brief Reset
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///
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void VideoContext::Reset() {
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loaded = false;
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StandardPaths::SetPathValue(_T("?video"),_T(""));
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KeyFrames.Clear();
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keyFramesLoaded = false;
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// Remove temporary audio provider
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if (audio && audio->temporary) {
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delete audio->provider;
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audio->provider = NULL;
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delete audio->player;
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audio->player = NULL;
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audio->temporary = false;
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}
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// Remove video data
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frame_n = 0;
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length = 0;
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fps = 0;
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keyFramesLoaded = false;
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overKeyFramesLoaded = false;
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isPlaying = false;
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nextFrame = -1;
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curLine = NULL;
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// Update displays
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UpdateDisplays(true);
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// Clean up video data
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wxRemoveFile(tempfile);
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tempfile = _T("");
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videoName = _T("");
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tempFrame.Clear();
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// Remove provider
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if (provider) {
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delete provider;
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provider = NULL;
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}
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delete subsProvider;
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subsProvider = NULL;
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}
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/// @brief Reload video
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///
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void VideoContext::Reload() {
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if (IsLoaded()) {
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wxString name = videoName;
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int n = frame_n;
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SetVideo(_T(""));
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SetVideo(name);
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JumpToFrame(n);
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}
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}
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/// @brief Sets video filename
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/// @param filename
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///
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void VideoContext::SetVideo(const wxString &filename) {
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// Unload video
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Reset();
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// Load video
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if (!filename.IsEmpty()) {
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try {
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grid->CommitChanges(true);
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// Set GL context
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GetGLContext(displayList.front())->SetCurrent(*displayList.front());
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// Choose a provider
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provider = VideoProviderFactoryManager::GetProvider(filename);
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// Get subtitles provider
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try {
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subsProvider = SubtitlesProviderFactoryManager::GetProvider();
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}
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catch (wxString err) { wxMessageBox(_T("Error while loading subtitles provider: ") + err,_T("Subtitles provider")); }
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catch (const wchar_t *err) { wxMessageBox(_T("Error while loading subtitles provider: ") + wxString(err),_T("Subtitles provider")); }
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KeyFrames.Clear();
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// load keyframes if available
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if (provider->AreKeyFramesLoaded()) {
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KeyFrames = provider->GetKeyFrames();
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keyFramesLoaded = true;
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}
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else {
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keyFramesLoaded = false;
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}
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// Set frame rate
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fps = provider->GetFPS();
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// does this provider need special vfr treatment?
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if (provider->NeedsVFRHack()) {
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// FIXME:
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// Unfortunately, this hack does not actually work for the one
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// provider that needs it (Avisynth). Go figure.
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bool isVfr = provider->IsVFR();
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if (!isVfr || provider->IsNativelyByFrames()) {
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VFR_Input.SetCFR(fps);
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if (VFR_Output.GetFrameRateType() != VFR) VFR_Output.SetCFR(fps);
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}
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else {
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FrameRate temp = provider->GetTrueFrameRate();
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provider->OverrideFrameTimeList(temp.GetFrameTimeList());
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}
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}
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// Gather video parameters
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length = provider->GetFrameCount();
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w = provider->GetWidth();
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h = provider->GetHeight();
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// Set filename
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videoName = filename;
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Options.AddToRecentList(filename,_T("Recent vid"));
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wxFileName fn(filename);
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StandardPaths::SetPathValue(_T("?video"),fn.GetPath());
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// Get frame
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frame_n = 0;
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// Show warning
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wxString warning = provider->GetWarning().c_str();
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if (!warning.IsEmpty()) wxMessageBox(warning,_T("Warning"),wxICON_WARNING | wxOK);
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UpdateDisplays(true);
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}
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catch (wxString &e) {
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wxMessageBox(e,_T("Error setting video"),wxICON_ERROR | wxOK);
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}
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}
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loaded = provider != NULL;
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}
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/// @brief Add new display
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/// @param display
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/// @return
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///
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void VideoContext::AddDisplay(VideoDisplay *display) {
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for (std::list<VideoDisplay*>::iterator cur=displayList.begin();cur!=displayList.end();cur++) {
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if ((*cur) == display) return;
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}
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displayList.push_back(display);
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}
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/// @brief Remove display
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/// @param display
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///
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void VideoContext::RemoveDisplay(VideoDisplay *display) {
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displayList.remove(display);
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}
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/// @brief Update displays
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/// @param full
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///
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void VideoContext::UpdateDisplays(bool full) {
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for (std::list<VideoDisplay*>::iterator cur=displayList.begin();cur!=displayList.end();cur++) {
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VideoDisplay *display = *cur;
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if (full) {
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display->UpdateSize();
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display->SetFrameRange(0,GetLength()-1);
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}
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display->SetFrame(GetFrameN());
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}
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// Update audio display
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if (audio && audio->loaded && audio->IsShownOnScreen()) {
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if (Options.AsBool(_T("Audio Draw Video Position"))) {
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audio->UpdateImage(false);
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}
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}
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}
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/// @brief Refresh subtitles
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/// @param video
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/// @param subtitles
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///
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void VideoContext::Refresh (bool video, bool subtitles) {
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// Update subtitles
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if (subtitles && subsProvider) {
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// Re-export
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AssExporter exporter(grid->ass);
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exporter.AddAutoFilters();
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try {
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subsProvider->LoadSubtitles(exporter.ExportTransform());
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}
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catch (wxString err) { wxMessageBox(_T("Error while invoking subtitles provider: ") + err,_T("Subtitles provider")); }
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catch (const wchar_t *err) { wxMessageBox(_T("Error while invoking subtitles provider: ") + wxString(err),_T("Subtitles provider")); }
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}
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// Jump to frame
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JumpToFrame(frame_n);
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}
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/// @brief Jumps to a frame and update display
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/// @param n
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/// @return
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///
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void VideoContext::JumpToFrame(int n) {
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// Loaded?
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if (!loaded) return;
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// Prevent intervention during playback
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if (isPlaying && n != playNextFrame) return;
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// Set frame number
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frame_n = n;
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// Display
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UpdateDisplays(false);
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// Update grid
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if (!isPlaying && Options.AsBool(_T("Highlight subs in frame"))) grid->Refresh(false);
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}
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/// @brief Jumps to a specific time
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/// @param ms
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/// @param exact
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///
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void VideoContext::JumpToTime(int ms,bool exact) {
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int frame;
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if (exact) frame = VFR_Output.PFrameAtTime(ms);
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else frame = VFR_Output.GetFrameAtTime(ms);
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JumpToFrame(frame);
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}
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/// @brief Get GL context
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/// @param canvas
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/// @return
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///
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wxGLContext *VideoContext::GetGLContext(wxGLCanvas *canvas) {
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if (!glContext) {
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glContext = new wxGLContext(canvas);
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ownGlContext = true;
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}
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return glContext;
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}
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/// @brief Requests a new frame
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/// @param n
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/// @param raw
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/// @return
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///
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AegiVideoFrame VideoContext::GetFrame(int n,bool raw) {
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// Current frame if -1
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if (n == -1) n = frame_n;
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// Get frame
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AegiVideoFrame frame = provider->GetFrame(n);
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// Raster subtitles if available/necessary
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if (!raw && subsProvider) {
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tempFrame.CopyFrom(frame);
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subsProvider->DrawSubtitles(tempFrame,VFR_Input.GetTimeAtFrame(n,true,true)/1000.0);
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return tempFrame;
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}
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// Return pure frame
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else return frame;
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}
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/// @brief Save snapshot
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/// @param raw
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///
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void VideoContext::SaveSnapshot(bool raw) {
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// Get folder
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wxString option = Options.AsText(_T("Video Screenshot Path"));
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wxFileName videoFile(videoName);
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wxString basepath;
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// Is it a path specifier and not an actual fixed path?
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if (option[0] == _T('?')) {
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// If dummy video is loaded, we can't save to the video location
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if (option.StartsWith(_T("?video")) && (videoName.Find(_T("?dummy")) != wxNOT_FOUND)) {
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// So try the script location instead
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option = _T("?script");
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}
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// Find out where the ?specifier points to
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basepath = StandardPaths::DecodePath(option);
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// If whereever that is isn't defined, we can't save there
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if ((basepath == _T("\\")) || (basepath == _T("/"))) {
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// So save to the current user's home dir instead
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basepath = wxGetHomeDir();
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}
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}
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// Actual fixed (possibly relative) path, decode it
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else basepath = DecodeRelativePath(option,StandardPaths::DecodePath(_T("?user/")));
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basepath += _T("/") + videoFile.GetName();
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// Get full path
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int session_shot_count = 1;
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wxString path;
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while (1) {
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path = basepath + wxString::Format(_T("_%03i_%i.png"),session_shot_count,frame_n);
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++session_shot_count;
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wxFileName tryPath(path);
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if (!tryPath.FileExists()) break;
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}
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// Save
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GetFrame(frame_n,raw).GetImage().SaveFile(path,wxBITMAP_TYPE_PNG);
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}
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/// @brief Get dimensions of script
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/// @param sw
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/// @param sh
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///
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void VideoContext::GetScriptSize(int &sw,int &sh) {
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grid->ass->GetResolution(sw,sh);
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}
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/// @brief Play the next frame, possibly with audio
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/// @return
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///
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void VideoContext::PlayNextFrame() {
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if (isPlaying)
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return;
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int thisFrame = frame_n;
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JumpToFrame(frame_n + 1);
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// Start playing audio
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if (Options.AsBool(_T("Audio Plays When Stepping Video")))
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audio->Play(VFR_Output.GetTimeAtFrame(thisFrame),VFR_Output.GetTimeAtFrame(thisFrame + 1));
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}
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/// @brief Play the previous frame, possibly with audio
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/// @return
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///
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void VideoContext::PlayPrevFrame() {
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if (isPlaying)
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return;
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int thisFrame = frame_n;
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JumpToFrame(frame_n -1);
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// Start playing audio
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if (Options.AsBool(_T("Audio Plays When Stepping Video")))
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audio->Play(VFR_Output.GetTimeAtFrame(thisFrame - 1),VFR_Output.GetTimeAtFrame(thisFrame));
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}
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/// @brief Play
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/// @return
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///
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void VideoContext::Play() {
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// Stop if already playing
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if (isPlaying) {
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Stop();
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return;
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}
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// Set variables
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startFrame = frame_n;
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endFrame = -1;
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// Start playing audio
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audio->Play(VFR_Output.GetTimeAtFrame(startFrame),-1);
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//audio->Play will override this if we put it before, so put it after.
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isPlaying = true;
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// Start timer
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playTime.Start();
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playback.SetOwner(this,VIDEO_PLAY_TIMER);
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playback.Start(10);
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}
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/// @brief Play line
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/// @return
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///
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void VideoContext::PlayLine() {
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// Get line
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AssDialogue *curline = grid->GetDialogue(grid->editBox->linen);
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if (!curline) return;
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// Start playing audio
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audio->Play(curline->Start.GetMS(),curline->End.GetMS());
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// Set variables
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isPlaying = true;
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startFrame = VFR_Output.GetFrameAtTime(curline->Start.GetMS(),true);
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endFrame = VFR_Output.GetFrameAtTime(curline->End.GetMS(),false);
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// Jump to start
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playNextFrame = startFrame;
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JumpToFrame(startFrame);
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// Set other variables
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playTime.Start();
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// Start timer
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playback.SetOwner(this,VIDEO_PLAY_TIMER);
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playback.Start(10);
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}
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/// @brief Stop
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///
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void VideoContext::Stop() {
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if (isPlaying) {
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playback.Stop();
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isPlaying = false;
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audio->Stop();
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}
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}
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/// @brief Play timer
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/// @param event
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/// @return
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///
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void VideoContext::OnPlayTimer(wxTimerEvent &event) {
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// Lock
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wxMutexError res = playMutex.TryLock();
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if (res == wxMUTEX_BUSY) return;
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playMutex.Unlock();
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wxMutexLocker lock(playMutex);
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// Get time difference
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int dif = playTime.Time();
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// Find next frame
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int startMs = VFR_Output.GetTimeAtFrame(startFrame);
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int nextFrame = frame_n;
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int i=0;
|
|
for (i=0;i<10;i++) {
|
|
if (nextFrame >= length) break;
|
|
if (dif < VFR_Output.GetTimeAtFrame(nextFrame) - startMs) {
|
|
break;
|
|
}
|
|
nextFrame++;
|
|
}
|
|
|
|
// End
|
|
if (nextFrame >= length || (endFrame != -1 && nextFrame > endFrame)) {
|
|
Stop();
|
|
return;
|
|
}
|
|
|
|
// Same frame
|
|
if (nextFrame == frame_n) return;
|
|
|
|
// Next frame is before or over 2 frames ahead, so force audio resync
|
|
if (audio->player && keepAudioSync && (nextFrame < frame_n || nextFrame > frame_n + 2)) audio->player->SetCurrentPosition(audio->GetSampleAtMS(VFR_Output.GetTimeAtFrame(nextFrame)));
|
|
|
|
// Jump to next frame
|
|
playNextFrame = nextFrame;
|
|
frame_n = nextFrame;
|
|
JumpToFrame(nextFrame);
|
|
|
|
// Sync audio
|
|
if (keepAudioSync && nextFrame % 10 == 0 && audio && audio->provider && audio->player) {
|
|
int64_t audPos = audio->GetSampleAtMS(VFR_Output.GetTimeAtFrame(nextFrame));
|
|
int64_t curPos = audio->player->GetCurrentPosition();
|
|
int delta = int(audPos-curPos);
|
|
if (delta < 0) delta = -delta;
|
|
int maxDelta = audio->provider->GetSampleRate();
|
|
if (delta > maxDelta) audio->player->SetCurrentPosition(audPos);
|
|
}
|
|
}
|
|
|
|
/// @brief Get name of temp work file
|
|
/// @return
|
|
///
|
|
wxString VideoContext::GetTempWorkFile () {
|
|
if (tempfile.IsEmpty()) {
|
|
tempfile = wxFileName::CreateTempFileName(_T("aegisub"));
|
|
wxRemoveFile(tempfile);
|
|
tempfile += _T(".ass");
|
|
}
|
|
return tempfile;
|
|
}
|
|
|
|
/// @brief Get keyframes
|
|
/// @return
|
|
///
|
|
wxArrayInt VideoContext::GetKeyFrames() {
|
|
if (OverKeyFramesLoaded()) return overKeyFrames;
|
|
return KeyFrames;
|
|
}
|
|
|
|
/// @brief Set keyframes
|
|
/// @param frames
|
|
///
|
|
void VideoContext::SetKeyFrames(wxArrayInt frames) {
|
|
KeyFrames = frames;
|
|
}
|
|
|
|
/// @brief Set keyframe override
|
|
/// @param frames
|
|
///
|
|
void VideoContext::SetOverKeyFrames(wxArrayInt frames) {
|
|
overKeyFrames = frames;
|
|
overKeyFramesLoaded = true;
|
|
}
|
|
|
|
/// @brief Close keyframes
|
|
///
|
|
void VideoContext::CloseOverKeyFrames() {
|
|
overKeyFrames.Clear();
|
|
overKeyFramesLoaded = false;
|
|
}
|
|
|
|
/// @brief Check if override keyframes are loaded
|
|
/// @return
|
|
///
|
|
bool VideoContext::OverKeyFramesLoaded() {
|
|
return overKeyFramesLoaded;
|
|
}
|
|
|
|
/// @brief Check if keyframes are loaded
|
|
/// @return
|
|
///
|
|
bool VideoContext::KeyFramesLoaded() {
|
|
return overKeyFramesLoaded || keyFramesLoaded;
|
|
}
|
|
|
|
/// @brief Calculate aspect ratio
|
|
/// @param type
|
|
/// @return
|
|
///
|
|
double VideoContext::GetARFromType(int type) {
|
|
if (type == 0) return (double)VideoContext::Get()->GetWidth()/(double)VideoContext::Get()->GetHeight();
|
|
if (type == 1) return 4.0/3.0;
|
|
if (type == 2) return 16.0/9.0;
|
|
if (type == 3) return 2.35;
|
|
return 1.0; //error
|
|
}
|
|
|
|
/// @brief Sets aspect ratio
|
|
/// @param _type
|
|
/// @param value
|
|
///
|
|
void VideoContext::SetAspectRatio(int _type, double value) {
|
|
// Get value
|
|
if (_type != 4) value = GetARFromType(_type);
|
|
if (value < 0.5) value = 0.5;
|
|
if (value > 5.0) value = 5.0;
|
|
|
|
// Set
|
|
arType = _type;
|
|
arValue = value;
|
|
UpdateDisplays(true);
|
|
}
|