Add VT-styled DVD menu generation
This commit is contained in:
Stu Leak
parent
60fed79840
commit
852e2cd5c1
281
author_menu.go
Normal file
281
author_menu.go
Normal file
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@ -0,0 +1,281 @@
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package main
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import (
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"context"
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"fmt"
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"os"
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"os/exec"
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"path/filepath"
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"strings"
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"git.leaktechnologies.dev/stu/VideoTools/internal/logging"
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"git.leaktechnologies.dev/stu/VideoTools/internal/utils"
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)
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type dvdMenuButton struct {
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Label string
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Command string
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X0 int
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Y0 int
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X1 int
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Y1 int
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}
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func buildDVDMenuAssets(ctx context.Context, workDir, title, region, aspect string, chapters []authorChapter, logFn func(string)) (string, []dvdMenuButton, error) {
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width, height := dvdMenuDimensions(region)
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buttons := buildDVDMenuButtons(chapters, width, height)
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if len(buttons) == 0 {
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return "", nil, nil
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}
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bgPath := filepath.Join(workDir, "menu_bg.png")
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overlayPath := filepath.Join(workDir, "menu_overlay.png")
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highlightPath := filepath.Join(workDir, "menu_highlight.png")
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selectPath := filepath.Join(workDir, "menu_select.png")
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menuMpg := filepath.Join(workDir, "menu.mpg")
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menuSpu := filepath.Join(workDir, "menu_spu.mpg")
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spumuxXML := filepath.Join(workDir, "menu_spu.xml")
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if logFn != nil {
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logFn("Building DVD menu assets...")
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}
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if err := buildMenuBackground(ctx, bgPath, title, buttons, width, height); err != nil {
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return "", nil, err
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}
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if err := buildMenuOverlays(ctx, overlayPath, highlightPath, selectPath, buttons, width, height); err != nil {
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return "", nil, err
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}
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if err := buildMenuMPEG(ctx, bgPath, menuMpg, region, aspect); err != nil {
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return "", nil, err
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}
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if err := writeSpumuxXML(spumuxXML, overlayPath, highlightPath, selectPath, buttons); err != nil {
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return "", nil, err
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}
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if err := runSpumux(ctx, spumuxXML, menuMpg, menuSpu, logFn); err != nil {
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return "", nil, err
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}
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if logFn != nil {
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logFn(fmt.Sprintf("DVD menu created: %s", filepath.Base(menuSpu)))
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}
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return menuSpu, buttons, nil
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}
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func dvdMenuDimensions(region string) (int, int) {
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if strings.ToLower(region) == "pal" {
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return 720, 576
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}
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return 720, 480
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}
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func buildDVDMenuButtons(chapters []authorChapter, width, height int) []dvdMenuButton {
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buttons := []dvdMenuButton{
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{
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Label: "Play",
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Command: "jump title 1;",
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},
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}
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maxChapters := 8
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if len(chapters) < maxChapters {
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maxChapters = len(chapters)
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}
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for i := 0; i < maxChapters; i++ {
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label := fmt.Sprintf("Chapter %d", i+1)
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if title := strings.TrimSpace(chapters[i].Title); title != "" {
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label = fmt.Sprintf("Chapter %d: %s", i+1, utils.ShortenMiddle(title, 34))
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}
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buttons = append(buttons, dvdMenuButton{
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Label: label,
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Command: fmt.Sprintf("jump title 1 chapter %d;", i+1),
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})
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}
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startY := 180
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rowHeight := 34
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boxHeight := 28
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x0 := 86
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x1 := width - 86
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for i := range buttons {
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y0 := startY + i*rowHeight
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buttons[i].X0 = x0
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buttons[i].X1 = x1
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buttons[i].Y0 = y0
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buttons[i].Y1 = y0 + boxHeight
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}
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return buttons
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}
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func buildMenuBackground(ctx context.Context, outputPath, title string, buttons []dvdMenuButton, width, height int) error {
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logoPath := findVTLogoPath()
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if logoPath == "" {
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return fmt.Errorf("VT logo not found for menu rendering")
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}
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safeTitle := utils.ShortenMiddle(strings.TrimSpace(title), 40)
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if safeTitle == "" {
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safeTitle = "DVD Menu"
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}
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bgColor := "0x0f172a"
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headerColor := "0x1f2937"
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textColor := "white"
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accentColor := "0x7c3aed"
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filterParts := []string{
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fmt.Sprintf("drawbox=x=0:y=0:w=%d:h=72:color=%s:t=fill", width, headerColor),
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fmt.Sprintf("drawtext=font='DejaVu Sans Mono':fontcolor=%s:fontsize=28:x=36:y=20:text='%s'", textColor, escapeDrawtextText("VideoTools DVD")),
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fmt.Sprintf("drawtext=font='DejaVu Sans Mono':fontcolor=%s:fontsize=18:x=36:y=80:text='%s'", textColor, escapeDrawtextText(safeTitle)),
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fmt.Sprintf("drawbox=x=36:y=108:w=%d:h=2:color=%s:t=fill", width-72, accentColor),
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fmt.Sprintf("drawtext=font='DejaVu Sans Mono':fontcolor=%s:fontsize=16:x=36:y=122:text='%s'", textColor, escapeDrawtextText("Select a title or chapter to play")),
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}
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for i, btn := range buttons {
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label := escapeDrawtextText(btn.Label)
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y := 184 + i*34
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filterParts = append(filterParts, fmt.Sprintf("drawtext=font='DejaVu Sans Mono':fontcolor=%s:fontsize=20:x=110:y=%d:text='%s'", textColor, y, label))
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}
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filterChain := strings.Join(filterParts, ",")
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args := []string{
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"-y",
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"-f", "lavfi",
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"-i", fmt.Sprintf("color=c=%s:s=%dx%d", bgColor, width, height),
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"-i", logoPath,
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"-filter_complex", fmt.Sprintf("[0:v]%s[bg];[1:v]scale=72:-1[logo];[bg][logo]overlay=W-w-36:18", filterChain),
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"-frames:v", "1",
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outputPath,
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}
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return runCommandWithLogger(ctx, utils.GetFFmpegPath(), args, nil)
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}
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func buildMenuOverlays(ctx context.Context, overlayPath, highlightPath, selectPath string, buttons []dvdMenuButton, width, height int) error {
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if err := buildMenuOverlay(ctx, overlayPath, buttons, width, height, "0x000000@0.0"); err != nil {
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return err
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}
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if err := buildMenuOverlay(ctx, highlightPath, buttons, width, height, "0xf59e0b@0.35"); err != nil {
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return err
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}
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if err := buildMenuOverlay(ctx, selectPath, buttons, width, height, "0xf59e0b@0.65"); err != nil {
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return err
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}
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return nil
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}
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func buildMenuOverlay(ctx context.Context, outputPath string, buttons []dvdMenuButton, width, height int, boxColor string) error {
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filterParts := []string{}
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for _, btn := range buttons {
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filterParts = append(filterParts, fmt.Sprintf("drawbox=x=%d:y=%d:w=%d:h=%d:color=%s:t=fill",
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btn.X0, btn.Y0, btn.X1-btn.X0, btn.Y1-btn.Y0, boxColor))
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}
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filterChain := strings.Join(filterParts, ",")
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if filterChain == "" {
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filterChain = "null"
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}
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args := []string{
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"-y",
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"-f", "lavfi",
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"-i", fmt.Sprintf("color=c=black@0.0:s=%dx%d", width, height),
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"-vf", filterChain,
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"-frames:v", "1",
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outputPath,
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}
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return runCommandWithLogger(ctx, utils.GetFFmpegPath(), args, nil)
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}
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func buildMenuMPEG(ctx context.Context, bgPath, outputPath, region, aspect string) error {
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scale := "720:480"
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if strings.ToLower(region) == "pal" {
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scale = "720:576"
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}
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args := []string{
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"-y",
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"-loop", "1",
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"-i", bgPath,
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"-t", "30",
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"-r", "30000/1001",
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"-vf", fmt.Sprintf("scale=%s,format=yuv420p", scale),
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"-c:v", "mpeg2video",
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"-b:v", "3000k",
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"-maxrate", "5000k",
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"-bufsize", "1835k",
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"-g", "15",
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"-pix_fmt", "yuv420p",
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"-aspect", aspect,
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"-f", "dvd",
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outputPath,
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}
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return runCommandWithLogger(ctx, utils.GetFFmpegPath(), args, nil)
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}
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func writeSpumuxXML(path, overlayPath, highlightPath, selectPath string, buttons []dvdMenuButton) error {
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var b strings.Builder
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b.WriteString("<subpictures>\n")
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b.WriteString(" <stream>\n")
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b.WriteString(fmt.Sprintf(" <spu start=\"00:00:00.00\" end=\"00:00:30.00\" image=\"%s\" highlight=\"%s\" select=\"%s\" force=\"yes\">\n",
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escapeXMLAttr(overlayPath),
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escapeXMLAttr(highlightPath),
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escapeXMLAttr(selectPath),
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))
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for i, btn := range buttons {
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b.WriteString(fmt.Sprintf(" <button name=\"b%d\" x0=\"%d\" y0=\"%d\" x1=\"%d\" y1=\"%d\" />\n",
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i+1, btn.X0, btn.Y0, btn.X1, btn.Y1))
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}
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b.WriteString(" </spu>\n")
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b.WriteString(" </stream>\n")
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b.WriteString("</subpictures>\n")
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return os.WriteFile(path, []byte(b.String()), 0o644)
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}
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func runSpumux(ctx context.Context, spumuxXML, inputMpg, outputMpg string, logFn func(string)) error {
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args := []string{"-m", "dvd", spumuxXML}
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if logFn != nil {
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logFn(fmt.Sprintf(">> spumux -m dvd %s < %s > %s", spumuxXML, filepath.Base(inputMpg), filepath.Base(outputMpg)))
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}
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cmd := exec.CommandContext(ctx, "spumux", args...)
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inputFile, err := os.Open(inputMpg)
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if err != nil {
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return fmt.Errorf("open spumux input: %w", err)
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}
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defer inputFile.Close()
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cmd.Stdin = inputFile
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outFile, err := os.Create(outputMpg)
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if err != nil {
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return fmt.Errorf("create spumux output: %w", err)
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}
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defer outFile.Close()
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cmd.Stdout = outFile
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var stderr strings.Builder
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cmd.Stderr = &stderr
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if err := cmd.Run(); err != nil {
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logging.Debug(logging.CatSystem, "spumux stderr: %s", stderr.String())
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return fmt.Errorf("spumux failed: %w", err)
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}
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return nil
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}
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func findVTLogoPath() string {
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search := []string{
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filepath.Join("assets", "logo", "VT_Icon.png"),
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}
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if exe, err := os.Executable(); err == nil {
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dir := filepath.Dir(exe)
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search = append(search, filepath.Join(dir, "assets", "logo", "VT_Icon.png"))
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}
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for _, p := range search {
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if _, err := os.Stat(p); err == nil {
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return p
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}
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}
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return ""
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}
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func escapeDrawtextText(text string) string {
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escaped := strings.ReplaceAll(text, "\\", "\\\\")
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escaped = strings.ReplaceAll(escaped, ":", "\\:")
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escaped = strings.ReplaceAll(escaped, "'", "\\'")
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escaped = strings.ReplaceAll(escaped, "%", "\\%")
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return escaped
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}
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@ -1523,9 +1523,6 @@ func (s *appState) promptAuthorOutput(paths []string, region, aspect, title stri
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func authorWarnings(state *appState) []string {
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var warnings []string
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if state.authorCreateMenu {
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warnings = append(warnings, "DVD menus are not implemented yet; the disc will play titles directly.")
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}
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if len(state.authorSubtitles) > 0 {
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warnings = append(warnings, "Subtitle tracks are not authored yet; they will be ignored.")
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}
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@ -1740,6 +1737,7 @@ func (s *appState) addAuthorToQueue(paths []string, region, aspect, title, outpu
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"authorTitle": s.authorTitle,
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"authorRegion": s.authorRegion,
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"authorAspect": s.authorAspectRatio,
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"createMenu": s.authorCreateMenu,
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"chapterSource": s.authorChapterSource,
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"subtitleTracks": append([]string{}, s.authorSubtitles...),
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"additionalAudios": append([]string{}, s.authorAudioTracks...),
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@ -1804,7 +1802,7 @@ func (s *appState) addAuthorVideoTSToQueue(videoTSPath, title, outputPath string
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return nil
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}
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func (s *appState) runAuthoringPipeline(ctx context.Context, paths []string, region, aspect, title, outputPath string, makeISO bool, clips []authorClip, chapters []authorChapter, treatAsChapters bool, logFn func(string), progressFn func(float64)) error {
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func (s *appState) runAuthoringPipeline(ctx context.Context, paths []string, region, aspect, title, outputPath string, makeISO bool, clips []authorClip, chapters []authorChapter, treatAsChapters bool, createMenu bool, logFn func(string), progressFn func(float64)) error {
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tempRoot := authorTempRoot(outputPath)
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if err := os.MkdirAll(tempRoot, 0755); err != nil {
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return fmt.Errorf("failed to create temp root: %w", err)
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@ -1983,8 +1981,17 @@ func (s *appState) runAuthoringPipeline(ctx context.Context, paths []string, reg
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}
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}
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var menuMpg string
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var menuButtons []dvdMenuButton
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if createMenu {
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menuMpg, menuButtons, err = buildDVDMenuAssets(ctx, workDir, title, region, aspect, chapters, logFn)
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if err != nil {
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return err
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}
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}
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xmlPath := filepath.Join(workDir, "dvd.xml")
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if err := writeDVDAuthorXML(xmlPath, mpgPaths, region, aspect, chapters); err != nil {
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if err := writeDVDAuthorXML(xmlPath, mpgPaths, region, aspect, chapters, menuMpg, menuButtons); err != nil {
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return err
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}
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@ -2128,7 +2135,7 @@ func (s *appState) executeAuthorJob(ctx context.Context, job *queue.Job, progres
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if videoTSPath := strings.TrimSpace(toString(cfg["videoTSPath"])); videoTSPath != "" {
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outputPath := toString(cfg["outputPath"])
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title := toString(cfg["title"])
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if err := ensureAuthorDependencies(true); err != nil {
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if err := ensureAuthorDependencies(true, false); err != nil {
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return err
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}
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@ -2207,8 +2214,9 @@ func (s *appState) executeAuthorJob(ctx context.Context, job *queue.Job, progres
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outputPath := toString(cfg["outputPath"])
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makeISO, _ := cfg["makeISO"].(bool)
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treatAsChapters, _ := cfg["treatAsChapters"].(bool)
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createMenu := toBool(cfg["createMenu"])
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if err := ensureAuthorDependencies(makeISO); err != nil {
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if err := ensureAuthorDependencies(makeISO, createMenu); err != nil {
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return err
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}
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@ -2286,7 +2294,7 @@ func (s *appState) executeAuthorJob(ctx context.Context, job *queue.Job, progres
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}, false)
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}
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err := s.runAuthoringPipeline(ctx, paths, region, aspect, title, outputPath, makeISO, clips, chapters, treatAsChapters, appendLog, updateProgress)
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err := s.runAuthoringPipeline(ctx, paths, region, aspect, title, outputPath, makeISO, clips, chapters, treatAsChapters, createMenu, appendLog, updateProgress)
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if err != nil {
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friendly := authorFriendlyError(err)
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appendLog("ERROR: " + friendly)
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@ -2429,7 +2437,7 @@ func buildAuthorFFmpegArgs(inputPath, outputPath, region, aspect string, progres
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return args
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}
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func writeDVDAuthorXML(path string, mpgPaths []string, region, aspect string, chapters []authorChapter) error {
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func writeDVDAuthorXML(path string, mpgPaths []string, region, aspect string, chapters []authorChapter, menuMpg string, menuButtons []dvdMenuButton) error {
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format := strings.ToLower(region)
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if format != "pal" {
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format = "ntsc"
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@ -2437,7 +2445,20 @@ func writeDVDAuthorXML(path string, mpgPaths []string, region, aspect string, ch
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var b strings.Builder
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b.WriteString("<dvdauthor>\n")
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b.WriteString(" <vmgm />\n")
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if menuMpg != "" && len(menuButtons) > 0 {
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b.WriteString(" <vmgm>\n")
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b.WriteString(" <menus>\n")
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b.WriteString(" <pgc entry=\"root\">\n")
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b.WriteString(fmt.Sprintf(" <vob file=\"%s\" pause=\"inf\" />\n", escapeXMLAttr(menuMpg)))
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for _, btn := range menuButtons {
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b.WriteString(fmt.Sprintf(" <button>%s</button>\n", btn.Command))
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}
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b.WriteString(" </pgc>\n")
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b.WriteString(" </menus>\n")
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b.WriteString(" </vmgm>\n")
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} else {
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b.WriteString(" <vmgm />\n")
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}
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b.WriteString(" <titleset>\n")
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b.WriteString(" <titles>\n")
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b.WriteString(fmt.Sprintf(" <video format=\"%s\" aspect=\"%s\" />\n", format, aspect))
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@ -2469,13 +2490,18 @@ func escapeXMLAttr(value string) string {
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return strings.ReplaceAll(escaped, "\"", """)
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}
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func ensureAuthorDependencies(makeISO bool) error {
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func ensureAuthorDependencies(makeISO bool, createMenu bool) error {
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if err := ensureExecutable(utils.GetFFmpegPath(), "ffmpeg"); err != nil {
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return err
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}
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if _, err := exec.LookPath("dvdauthor"); err != nil {
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return fmt.Errorf("dvdauthor not found in PATH")
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}
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if createMenu {
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if _, err := exec.LookPath("spumux"); err != nil {
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return fmt.Errorf("spumux not found in PATH")
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}
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}
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if makeISO {
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if _, _, err := buildISOCommand("output.iso", "output", "VIDEO_TOOLS"); err != nil {
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return err
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