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support for SAMI subtitles; b/i tags for SAMI and SubRip

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This commit is contained in:
minjaesong
2025-08-28 13:57:00 +09:00
parent 16ced55661
commit 313122c01e
2 changed files with 414 additions and 7 deletions
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73
assets/disk0/tvdos/bin/playtev.js
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@@ -97,6 +97,70 @@ function clearSubtitleArea() {
con.color_pair(oldFgColor, oldBgColor)
}
function getVisualLength(line) {
// Calculate the visual length of a line excluding formatting tags
let visualLength = 0
let i = 0
while (i < line.length) {
if (i < line.length - 2 && line[i] === '<') {
// Check for formatting tags and skip them
if (line.substring(i, i + 3).toLowerCase() === '<b>' ||
line.substring(i, i + 3).toLowerCase() === '<i>') {
i += 3 // Skip tag
} else if (i < line.length - 3 &&
(line.substring(i, i + 4).toLowerCase() === '</b>' ||
line.substring(i, i + 4).toLowerCase() === '</i>')) {
i += 4 // Skip closing tag
} else {
// Not a formatting tag, count the character
visualLength++
i++
}
} else {
// Regular character, count it
visualLength++
i++
}
}
return visualLength
}
function displayFormattedLine(line) {
// Parse line and handle <b> and <i> tags with color changes
// Default subtitle color: yellow (231), formatted text: white (254)
let i = 0
let inBoldOrItalic = false
while (i < line.length) {
if (i < line.length - 2 && line[i] === '<') {
// Check for opening tags
if (line.substring(i, i + 3).toLowerCase() === '<b>' ||
line.substring(i, i + 3).toLowerCase() === '<i>') {
con.color_pair(254, 0) // Switch to white for formatted text
inBoldOrItalic = true
i += 3
} else if (i < line.length - 3 &&
(line.substring(i, i + 4).toLowerCase() === '</b>' ||
line.substring(i, i + 4).toLowerCase() === '</i>')) {
con.color_pair(231, 0) // Switch back to yellow for normal text
inBoldOrItalic = false
i += 4
} else {
// Not a formatting tag, print the character
print(line[i])
i++
}
} else {
// Regular character, print it
print(line[i])
i++
}
}
}
function displaySubtitle(text, position = 0) {
if (!text || text.length === 0) {
clearSubtitleArea()
@@ -113,7 +177,8 @@ function displaySubtitle(text, position = 0) {
// Calculate position based on subtitle position setting
let startRow, startCol
let longestLineLength = lines.map(s => s.length).sort().last()
// Calculate visual length without formatting tags for positioning
let longestLineLength = lines.map(s => getVisualLength(s)).sort().last()
switch (position) {
case 2: // center left
@@ -154,7 +219,7 @@ function displaySubtitle(text, position = 0) {
case 5: // top right
case 6: // center right
case 7: // bottom right
startCol = Math.max(1, 78 - line.length)
startCol = Math.max(1, 78 - getVisualLength(line))
break
case 0: // bottom center
case 4: // top center
@@ -166,7 +231,9 @@ function displaySubtitle(text, position = 0) {
con.move(row, startCol)
// TODO insert half-width pillars to cap the subtitle blocks
print(line) // Unicode-capable print function
// Parse and display line with formatting tag support
displayFormattedLine(line)
}
con.color_pair(oldFgColor, oldBgColor)