forked from mia/Aegisub
4ec507f814
Document all of the SubtitleFormat methods. Add default implementations of CanReadFile and CanWriteFile that check against the appropriate wildcard list. Clean up and simplify a lot of very odd code. Throw typed exceptions in all subtitle readers rather than strings. Originally committed to SVN as r5617.
306 lines
8.6 KiB
C++
306 lines
8.6 KiB
C++
// Copyright (c) 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 subtitle_format_ttxt.cpp
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/// @brief Reading/writing MPEG-4 Timed Text subtitles in TTXT XML format
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/// @ingroup subtitle_io
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///
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#include "config.h"
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#include "subtitle_format_ttxt.h"
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#include "ass_dialogue.h"
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#include "ass_file.h"
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#include "ass_time.h"
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#include "compat.h"
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#include "main.h"
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DEFINE_SIMPLE_EXCEPTION(TTXTParseError, SubtitleFormatParseError, "subtitle_io/parse/ttxt")
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TTXTSubtitleFormat::TTXTSubtitleFormat()
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: SubtitleFormat("MPEG-4 Streaming Text")
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{
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}
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wxArrayString TTXTSubtitleFormat::GetReadWildcards() const {
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wxArrayString formats;
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formats.Add("ttxt");
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return formats;
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}
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wxArrayString TTXTSubtitleFormat::GetWriteWildcards() const {
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return GetReadWildcards();
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}
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void TTXTSubtitleFormat::ReadFile(wxString const& filename, wxString const& forceEncoding) {
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LoadDefault(false);
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// Load XML document
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wxXmlDocument doc;
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if (!doc.Load(filename)) throw TTXTParseError("Failed loading TTXT XML file.", 0);
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// Check root node name
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if (doc.GetRoot()->GetName() != "TextStream") throw TTXTParseError("Invalid TTXT file.", 0);
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// Check version
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wxString verStr = doc.GetRoot()->GetAttribute("version", "");
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version = -1;
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if (verStr == "1.0") version = 0;
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else if (verStr == "1.1") version = 1;
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else throw TTXTParseError("Unknown TTXT version: " + STD_STR(verStr), 0);
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// Get children
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diag = NULL;
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wxXmlNode *child = doc.GetRoot()->GetChildren();
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int lines = 0;
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while (child) {
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// Line
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if (child->GetName() == "TextSample") {
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if (ProcessLine(child)) lines++;
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}
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// Header
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else if (child->GetName() == "TextStreamHeader") {
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ProcessHeader(child);
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}
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// Proceed to next child
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child = child->GetNext();
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}
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// No lines?
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if (lines == 0) {
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AssDialogue *line = new AssDialogue();
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line->group = "[Events]";
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line->Style = "Default";
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line->Start.SetMS(0);
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line->End.SetMS(5000);
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Line->push_back(line);
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}
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}
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bool TTXTSubtitleFormat::ProcessLine(wxXmlNode *node) {
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// Get time
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wxString sampleTime = node->GetAttribute("sampleTime", "00:00:00.000");
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AssTime time;
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time.ParseASS(sampleTime);
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// Set end time of last line
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if (diag) diag->End = time;
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diag = NULL;
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// Get text
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wxString text;
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if (version == 0) text = node->GetAttribute("text", "");
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else text = node->GetNodeContent();
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// Create line
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if (!text.IsEmpty()) {
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// Create dialogue
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diag = new AssDialogue();
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diag->Start.SetMS(time.GetMS());
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diag->End.SetMS(36000000-10);
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diag->group = "[Events]";
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diag->Style = "Default";
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diag->Comment = false;
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// Process text for 1.0
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if (version == 0) {
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wxString finalText;
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finalText.Alloc(text.Length());
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bool in = false;
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bool first = true;
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for (size_t i=0;i<text.Length();i++) {
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if (text[i] == '\'') {
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if (!in && !first) finalText += "\\N";
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first = false;
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in = !in;
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}
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else if (in) finalText += text[i];
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}
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diag->Text = finalText;
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}
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// Process text for 1.1
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else {
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text.Replace("\r", "");
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text.Replace("\n", "\\N");
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diag->Text = text;
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}
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// Insert dialogue
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Line->push_back(diag);
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return true;
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}
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else return false;
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}
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void TTXTSubtitleFormat::ProcessHeader(wxXmlNode *node) {
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// TODO
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}
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void TTXTSubtitleFormat::WriteFile(wxString const& filename, wxString const& encoding) {
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// Convert to TTXT
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CreateCopy();
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ConvertToTTXT();
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// Create XML structure
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wxXmlDocument doc;
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wxXmlNode *root = new wxXmlNode(NULL, wxXML_ELEMENT_NODE, "TextStream");
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root->AddAttribute("version", "1.1");
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doc.SetRoot(root);
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// Create header
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WriteHeader(root);
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// Create lines
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int i=1;
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using std::list;
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prev = NULL;
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for (list<AssEntry*>::iterator cur=Line->begin();cur!=Line->end();cur++) {
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AssDialogue *current = dynamic_cast<AssDialogue*>(*cur);
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if (current && !current->Comment) {
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WriteLine(root, current);
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i++;
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}
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else
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throw TTXTParseError("Unexpected line type in TTXT file", 0);
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}
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// Save XML
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//prevNode->SetNext(NULL);
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doc.Save(filename);
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// Clear
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ClearCopy();
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}
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void TTXTSubtitleFormat::WriteHeader(wxXmlNode *root) {
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// Write stream header
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wxXmlNode *node = new wxXmlNode(wxXML_ELEMENT_NODE, "TextStreamHeader");
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node->AddAttribute("width", "400");
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node->AddAttribute("height", "60");
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node->AddAttribute("layer", "0");
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node->AddAttribute("translation_x", "0");
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node->AddAttribute("translation_y", "0");
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root->AddChild(node);
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root = node;
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// Write sample description
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node = new wxXmlNode(wxXML_ELEMENT_NODE, "TextSampleDescription");
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node->AddAttribute("horizontalJustification", "center");
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node->AddAttribute("verticalJustification", "bottom");
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node->AddAttribute("backColor", "0 0 0 0");
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node->AddAttribute("verticalText", "no");
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node->AddAttribute("fillTextRegion", "no");
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node->AddAttribute("continuousKaraoke", "no");
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node->AddAttribute("scroll", "None");
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root->AddChild(node);
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root = node;
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// Write font table
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node = new wxXmlNode(wxXML_ELEMENT_NODE, "FontTable");
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wxXmlNode *subNode = new wxXmlNode(wxXML_ELEMENT_NODE, "FontTableEntry");
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subNode->AddAttribute("fontName", "Sans");
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subNode->AddAttribute("fontID", "1");
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node->AddChild(subNode);
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root->AddChild(node);
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// Write text box
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node = new wxXmlNode(wxXML_ELEMENT_NODE, "TextBox");
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node->AddAttribute("top", "0");
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node->AddAttribute("left", "0");
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node->AddAttribute("bottom", "60");
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node->AddAttribute("right", "400");
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root->AddChild(node);
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// Write style
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node = new wxXmlNode(wxXML_ELEMENT_NODE, "Style");
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node->AddAttribute("styles", "Normal");
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node->AddAttribute("fontID", "1");
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node->AddAttribute("fontSize", "18");
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node->AddAttribute("color", "ff ff ff ff");
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root->AddChild(node);
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}
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void TTXTSubtitleFormat::WriteLine(wxXmlNode *root, AssDialogue *line) {
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// If it doesn't start at the end of previous, add blank
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wxXmlNode *node, *subNode;
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if (prev && prev->End != line->Start) {
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node = new wxXmlNode(wxXML_ELEMENT_NODE, "TextSample");
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node->AddAttribute("sampleTime", "0" + prev->End.GetASSFormated(true));
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node->AddAttribute("xml:space", "preserve");
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subNode = new wxXmlNode(wxXML_TEXT_NODE, "", "");
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node->AddChild(subNode);
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root->AddChild(node);
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}
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// Generate and insert node
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node = new wxXmlNode(wxXML_ELEMENT_NODE, "TextSample");
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node->AddAttribute("sampleTime", "0" + line->Start.GetASSFormated(true));
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node->AddAttribute("xml:space", "preserve");
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subNode = new wxXmlNode(wxXML_TEXT_NODE, "", line->Text);
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node->AddChild(subNode);
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root->AddChild(node);
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// Set as previous
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prev = line;
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}
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void TTXTSubtitleFormat::ConvertToTTXT () {
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SortLines();
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StripComments();
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RecombineOverlaps();
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MergeIdentical();
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ConvertTags(1, "\r\n");
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// Find last line
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AssTime lastTime;
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for (std::list<AssEntry*>::reverse_iterator cur=Line->rbegin();cur!=Line->rend();cur++) {
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AssDialogue *prev = dynamic_cast<AssDialogue*>(*cur);
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if (prev) {
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lastTime = prev->End;
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break;
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}
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}
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// Insert blank line at the end
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AssDialogue *diag = new AssDialogue();
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diag->Start.SetMS(lastTime.GetMS());
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diag->End.SetMS(lastTime.GetMS()+OPT_GET("Timing/Default Duration")->GetInt());
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diag->group = "[Events]";
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diag->Style = "Default";
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diag->Comment = false;
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Line->push_back(diag);
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}
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