From: Carl Hetherington <cth@carlh.net>
Date: Thu, 23 Jan 2020 14:37:37 +0000 (+0100)
Subject: Support binary STL subtitle files.
X-Git-Tag: v2.15.42~8
X-Git-Url: https://main.carlh.net/gitweb/?p=dcpomatic.git;a=commitdiff_plain;h=3ce4c624eadab42d740b08d60d52bd0d4f2b86f6

Support binary STL subtitle files.
---

diff --git a/src/lib/content_factory.cc b/src/lib/content_factory.cc
index f123061b7..0e8b04eda 100644
--- a/src/lib/content_factory.cc
+++ b/src/lib/content_factory.cc
@@ -166,7 +166,7 @@ content_factory (boost::filesystem::path path)
 
 		if (valid_image_file (path)) {
 			single.reset (new ImageContent(path));
-		} else if (ext == ".srt" || ext == ".ssa" || ext == ".ass") {
+		} else if (ext == ".srt" || ext == ".ssa" || ext == ".ass" || ext == ".stl") {
 			single.reset (new StringTextFileContent(path));
 		} else if (ext == ".xml") {
 			cxml::Document doc;
diff --git a/src/lib/string_text_file.cc b/src/lib/string_text_file.cc
index bf19e482c..d3c56832d 100644
--- a/src/lib/string_text_file.cc
+++ b/src/lib/string_text_file.cc
@@ -1,5 +1,5 @@
 /*
-    Copyright (C) 2014-2018 Carl Hetherington <cth@carlh.net>
+    Copyright (C) 2014-2020 Carl Hetherington <cth@carlh.net>
 
     This file is part of DCP-o-matic.
 
@@ -24,6 +24,7 @@
 #include "string_text_file_content.h"
 #include <sub/subrip_reader.h>
 #include <sub/ssa_reader.h>
+#include <sub/stl_binary_reader.h>
 #include <sub/collect.h>
 #include <unicode/ucsdet.h>
 #include <unicode/ucnv.h>
@@ -42,50 +43,67 @@ using namespace dcpomatic;
 
 StringTextFile::StringTextFile (shared_ptr<const StringTextFileContent> content)
 {
-	Data in (content->path (0));
-
-	UErrorCode status = U_ZERO_ERROR;
-	UCharsetDetector* detector = ucsdet_open (&status);
-	ucsdet_setText (detector, reinterpret_cast<const char *> (in.data().get()), in.size(), &status);
-
-	UCharsetMatch const * match = ucsdet_detect (detector, &status);
-	char const * in_charset = ucsdet_getName (match, &status);
-
-	UConverter* to_utf16 = ucnv_open (in_charset, &status);
-	/* This is a guess; I think we should be able to encode any input in 4 times its input size */
-	scoped_array<uint16_t> utf16 (new uint16_t[in.size() * 2]);
-	int const utf16_len = ucnv_toUChars (
-		to_utf16, reinterpret_cast<UChar*>(utf16.get()), in.size() * 2,
-		reinterpret_cast<const char *> (in.data().get()), in.size(),
-		&status
-		);
-
-	UConverter* to_utf8 = ucnv_open ("UTF-8", &status);
-	/* Another guess */
-	scoped_array<char> utf8 (new char[utf16_len * 2]);
-	ucnv_fromUChars (to_utf8, utf8.get(), utf16_len * 2, reinterpret_cast<UChar*>(utf16.get()), utf16_len, &status);
-
-	/* Fix OS X line endings */
-	size_t utf8_len = strlen (utf8.get ());
-	for (size_t i = 0; i < utf8_len; ++i) {
-		if (utf8[i] == '\r' && ((i == utf8_len - 1) || utf8[i + 1] != '\n')) {
-			utf8[i] = '\n';
-		}
-	}
-
-	ucsdet_close (detector);
-	ucnv_close (to_utf16);
-	ucnv_close (to_utf8);
+	string ext = content->path(0).extension().string();
+	transform (ext.begin(), ext.end(), ext.begin(), ::tolower);
 
 	sub::Reader* reader = 0;
 
-	string ext = content->path(0).extension().string();
-	transform (ext.begin(), ext.end(), ext.begin(), ::tolower);
+	if (ext == ".stl") {
+		FILE* f = fopen_boost (content->path(0), "rb");
+		if (!f) {
+			throw OpenFileError (content->path(0), errno, OpenFileError::READ);
+		}
+		try {
+			reader = new sub::STLBinaryReader (f);
+		} catch (...) {
+			fclose (f);
+			throw;
+		}
+		fclose (f);
+
+	} else {
+		/* Text-based file; sort out its character encoding before we try to parse it */
+
+		Data in (content->path (0));
+
+		UErrorCode status = U_ZERO_ERROR;
+		UCharsetDetector* detector = ucsdet_open (&status);
+		ucsdet_setText (detector, reinterpret_cast<const char *> (in.data().get()), in.size(), &status);
+
+		UCharsetMatch const * match = ucsdet_detect (detector, &status);
+		char const * in_charset = ucsdet_getName (match, &status);
+
+		UConverter* to_utf16 = ucnv_open (in_charset, &status);
+		/* This is a guess; I think we should be able to encode any input in 4 times its input size */
+		scoped_array<uint16_t> utf16 (new uint16_t[in.size() * 2]);
+		int const utf16_len = ucnv_toUChars (
+				to_utf16, reinterpret_cast<UChar*>(utf16.get()), in.size() * 2,
+				reinterpret_cast<const char *> (in.data().get()), in.size(),
+				&status
+				);
+
+		UConverter* to_utf8 = ucnv_open ("UTF-8", &status);
+		/* Another guess */
+		scoped_array<char> utf8 (new char[utf16_len * 2]);
+		ucnv_fromUChars (to_utf8, utf8.get(), utf16_len * 2, reinterpret_cast<UChar*>(utf16.get()), utf16_len, &status);
+
+		/* Fix OS X line endings */
+		size_t utf8_len = strlen (utf8.get ());
+		for (size_t i = 0; i < utf8_len; ++i) {
+			if (utf8[i] == '\r' && ((i == utf8_len - 1) || utf8[i + 1] != '\n')) {
+				utf8[i] = '\n';
+			}
+		}
+
+		ucsdet_close (detector);
+		ucnv_close (to_utf16);
+		ucnv_close (to_utf8);
 
-	if (ext == ".srt") {
-		reader = new sub::SubripReader (utf8.get());
-	} else if (ext == ".ssa" || ext == ".ass") {
-		reader = new sub::SSAReader (utf8.get());
+		if (ext == ".srt") {
+			reader = new sub::SubripReader (utf8.get());
+		} else if (ext == ".ssa" || ext == ".ass") {
+			reader = new sub::SSAReader (utf8.get());
+		}
 	}
 
 	if (reader) {
diff --git a/src/lib/text_decoder.cc b/src/lib/text_decoder.cc
index 4eaaf37af..4e2432463 100644
--- a/src/lib/text_decoder.cc
+++ b/src/lib/text_decoder.cc
@@ -148,9 +148,14 @@ TextDecoder::emit_plain_start (ContentTime from, sub::Subtitle const & subtitle)
 
 				v_align = dcp::VALIGN_TOP;
 			} else {
-				DCPOMATIC_ASSERT (i.vertical_position.proportional);
 				DCPOMATIC_ASSERT (i.vertical_position.reference);
-				v_position = i.vertical_position.proportional.get();
+				if (i.vertical_position.proportional) {
+					v_position = i.vertical_position.proportional.get();
+				} else {
+					DCPOMATIC_ASSERT (i.vertical_position.line);
+					DCPOMATIC_ASSERT (i.vertical_position.lines);
+					v_position = float(*i.vertical_position.line) / *i.vertical_position.lines;
+				}
 
 				if (lowest_proportional) {
 					/* Adjust line spacing */