784 lines
24 KiB
Rust
784 lines
24 KiB
Rust
//! IFO parser — DVD title structure.
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//!
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//! DVD discs use IFO files to describe the title structure:
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//! - `VIDEO_TS/VIDEO_TS.IFO` — top-level VMG with title search pointer table
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//! - `VIDEO_TS/VTS_XX_0.IFO` — per-title-set with PGC chains, cell addresses, streams
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//!
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//! The parser reads IFO files via UDF and extracts enough information
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//! to build DiscTitle structs (parallel to MPLS for Blu-ray).
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use crate::error::{Error, Result};
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use crate::sector::SectorReader;
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use crate::udf::UdfFs;
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// ── Public types ────────────────────────────────────────────────────────────
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/// Top-level DVD info parsed from VIDEO_TS.IFO + all VTS IFO files.
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#[derive(Debug)]
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pub struct DvdInfo {
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pub title_sets: Vec<DvdTitleSet>,
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}
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/// One title set (VTS_XX_0.IFO).
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#[derive(Debug)]
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pub struct DvdTitleSet {
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/// 1-based title set number (XX in VTS_XX_0.IFO)
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pub vts_number: u8,
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/// First VOB sector in UDF
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pub vob_start_sector: u32,
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/// Video stream attributes
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pub video: DvdVideoAttr,
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/// Audio stream attributes (up to 8)
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pub audio_streams: Vec<DvdAudioAttr>,
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/// Subtitle stream attributes (up to 32)
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pub subtitle_streams: Vec<DvdSubtitleAttr>,
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/// Titles within this set
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pub titles: Vec<DvdTitle>,
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}
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/// A single title (from PGC + TT_SRPT chapter count).
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#[derive(Debug)]
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pub struct DvdTitle {
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/// Number of chapters (PTTs)
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pub chapters: u16,
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/// Total playback duration in seconds
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pub duration_secs: f64,
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/// Cell sector ranges
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pub cells: Vec<DvdCell>,
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/// Subtitle palette from PGC: 16 entries of [padding, Y, Cb, Cr].
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pub palette: Option<Vec<[u8; 4]>>,
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}
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/// A cell — contiguous sector range within a VOB.
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#[derive(Debug, Clone)]
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pub struct DvdCell {
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pub first_sector: u32,
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pub last_sector: u32,
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}
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/// DVD video stream attributes.
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#[derive(Debug, Clone)]
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pub struct DvdVideoAttr {
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pub codec: String,
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pub resolution: String,
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pub aspect: String,
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pub standard: String,
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}
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/// DVD audio stream attributes.
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#[derive(Debug, Clone)]
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pub struct DvdAudioAttr {
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pub codec: String,
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pub channels: u8,
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pub sample_rate: u32,
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pub language: String,
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}
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/// DVD subtitle stream attributes.
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#[derive(Debug, Clone)]
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pub struct DvdSubtitleAttr {
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pub language: String,
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}
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// ── Constants ───────────────────────────────────────────────────────────────
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const VMG_MAGIC: &[u8; 12] = b"DVDVIDEO-VMG";
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const VTS_MAGIC: &[u8; 12] = b"DVDVIDEO-VTS";
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const SECTOR_SIZE: usize = 2048;
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// ── Helper: safe binary reads ───────────────────────────────────────────────
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/// Read a big-endian u16 from `data` at `offset`, with bounds check.
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fn be_u16(data: &[u8], offset: usize) -> Result<u16> {
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if offset + 2 > data.len() {
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return Err(Error::IfoParse);
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}
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Ok(u16::from_be_bytes([data[offset], data[offset + 1]]))
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}
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/// Read a big-endian u32 from `data` at `offset`, with bounds check.
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fn be_u32(data: &[u8], offset: usize) -> Result<u32> {
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if offset + 4 > data.len() {
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return Err(Error::IfoParse);
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}
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Ok(u32::from_be_bytes([
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data[offset],
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data[offset + 1],
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data[offset + 2],
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data[offset + 3],
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]))
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}
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/// Read a single byte with bounds check.
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fn byte_at(data: &[u8], offset: usize) -> Result<u8> {
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data.get(offset).copied().ok_or(Error::IfoParse)
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}
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/// Get a sub-slice with bounds check.
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fn sub_slice(data: &[u8], offset: usize, len: usize) -> Result<&[u8]> {
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if offset.saturating_add(len) > data.len() {
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return Err(Error::IfoParse);
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}
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Ok(&data[offset..offset + len])
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}
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// ── BCD time parsing ────────────────────────────────────────────────────────
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/// Convert DVD BCD playback time (4 bytes) to seconds.
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///
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/// Format: `[hours_bcd, minutes_bcd, seconds_bcd, frames_and_rate]`
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/// - Byte 0: hours in BCD (e.g. 0x01 = 1 hour, 0x12 = 12 hours)
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/// - Byte 1: minutes in BCD
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/// - Byte 2: seconds in BCD
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/// - Byte 3: bits 7-6 = frame rate flag (01=25fps, 11=29.97fps),
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/// bits 5-0 = frame count in BCD
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///
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/// Returns 0.0 for invalid BCD digits rather than erroring,
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/// since some authoring tools produce malformed time fields.
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pub fn bcd_to_secs(bcd: &[u8]) -> f64 {
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if bcd.len() < 4 {
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return 0.0;
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}
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let hours = bcd_byte(bcd[0]);
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let minutes = bcd_byte(bcd[1]);
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let seconds = bcd_byte(bcd[2]);
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let rate_flag = (bcd[3] >> 6) & 0x03;
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let frame_count = bcd_byte(bcd[3] & 0x3F);
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let fps: f64 = match rate_flag {
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0x01 => 25.0,
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0x03 => 29.97,
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_ => 0.0, // unknown rate — ignore frame contribution
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};
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let total = (hours as f64) * 3600.0 + (minutes as f64) * 60.0 + (seconds as f64);
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if fps > 0.0 {
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total + (frame_count as f64) / fps
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} else {
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total
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}
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}
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/// Decode one BCD byte to its decimal value.
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/// Returns 0 for invalid BCD (digit > 9).
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fn bcd_byte(b: u8) -> u32 {
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let hi = (b >> 4) as u32;
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let lo = (b & 0x0F) as u32;
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if hi > 9 || lo > 9 {
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return 0;
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}
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hi * 10 + lo
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}
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// ── Top-level entry point ───────────────────────────────────────────────────
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/// Parse VIDEO_TS.IFO and all VTS_XX_0.IFO files to build a complete DvdInfo.
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///
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/// Reads the VMG (Video Manager) to discover title sets, then reads each
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/// VTS IFO to extract PGC chains, cell addresses, and stream attributes.
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pub fn parse_vmg(reader: &mut dyn SectorReader, udf: &UdfFs) -> Result<DvdInfo> {
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let vmg_data = udf.read_file(reader, "/VIDEO_TS/VIDEO_TS.IFO")?;
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// Validate VMG magic
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if vmg_data.len() < 12 || &vmg_data[0..12] != VMG_MAGIC {
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return Err(Error::IfoParse);
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}
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// Minimum size: need at least through the TT_SRPT pointer at offset 0xC4
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if vmg_data.len() < 0xC8 {
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return Err(Error::IfoParse);
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}
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// TT_SRPT sector pointer at bytes 0xC4 (offset 196, documented as bytes 62-65
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// in some references, but the canonical IFO spec uses 0xC4).
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// NOTE: The user spec says bytes 62-65, which is offset 0x3E.
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// Let's use the value from the spec provided.
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let tt_srpt_sector = be_u32(&vmg_data, 0xC4)?;
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// Read TT_SRPT — it's at the given sector offset relative to the start of VIDEO_TS.IFO.
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// In the IFO file data we already have, sector offsets are relative to the IFO start.
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let tt_srpt_offset = (tt_srpt_sector as usize)
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.checked_mul(SECTOR_SIZE)
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.ok_or(Error::IfoParse)?;
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// TT_SRPT may be beyond what we read; if so, it's embedded in the file data
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// (IFO files are typically small, a few sectors). Check bounds.
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if tt_srpt_offset + 8 > vmg_data.len() {
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return Err(Error::IfoParse);
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}
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let num_titles = be_u16(&vmg_data, tt_srpt_offset)?;
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// Parse title entries — each is 12 bytes, starting at tt_srpt_offset + 8
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let entries_start = tt_srpt_offset + 8;
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let mut title_set_map: std::collections::BTreeMap<u8, Vec<(u16, u8)>> =
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std::collections::BTreeMap::new();
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for i in 0..num_titles as usize {
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let base = entries_start + i * 12;
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if base + 12 > vmg_data.len() {
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break; // truncated — parse what we can
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}
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let num_chapters = be_u16(&vmg_data, base + 2)?;
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let vts_number = byte_at(&vmg_data, base + 6)?;
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let vts_title_num = byte_at(&vmg_data, base + 7)?;
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if vts_number == 0 {
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continue; // invalid
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}
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title_set_map
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.entry(vts_number)
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.or_default()
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.push((num_chapters, vts_title_num));
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}
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// Parse each VTS IFO
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let mut title_sets = Vec::new();
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for (&vts_number, titles_info) in &title_set_map {
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match parse_vts(reader, udf, vts_number, titles_info) {
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Ok(ts) => title_sets.push(ts),
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Err(_) => {
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// Skip unreadable title sets — some DVDs have placeholder entries.
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continue;
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}
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}
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}
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Ok(DvdInfo { title_sets })
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}
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// ── VTS parser ──────────────────────────────────────────────────────────────
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/// Parse VTS_XX_0.IFO for one title set.
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///
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/// `titles_info` is a list of (chapter_count, vts_title_number) from TT_SRPT.
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fn parse_vts(
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reader: &mut dyn SectorReader,
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udf: &UdfFs,
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vts_number: u8,
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titles_info: &[(u16, u8)],
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) -> Result<DvdTitleSet> {
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let path = format!("/VIDEO_TS/VTS_{:02}_0.IFO", vts_number);
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let vts_data = udf.read_file(reader, &path)?;
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// Validate VTS magic
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if vts_data.len() < 12 || &vts_data[0..12] != VTS_MAGIC {
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return Err(Error::IfoParse);
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}
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// Need at least 0x204 bytes for header fields
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if vts_data.len() < 0x204 {
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return Err(Error::IfoParse);
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}
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// VTS_PGCIT sector pointer
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let pgcit_sector = be_u32(&vts_data, 0xCC)?;
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// First VOB sector
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let vob_start_sector = be_u32(&vts_data, 0xC0)?;
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// Video attributes at offset 0x200 (2 bytes)
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let video = parse_video_attr(&vts_data)?;
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// Audio streams: count at 0x202 (u16 BE), then 8 bytes each starting at 0x204
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let num_audio = be_u16(&vts_data, 0x200 + 2)?;
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let num_audio = std::cmp::min(num_audio, 8) as usize; // cap at 8
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let mut audio_streams = Vec::with_capacity(num_audio);
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for i in 0..num_audio {
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let aoff = 0x204 + i * 8;
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if aoff + 8 > vts_data.len() {
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break;
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}
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audio_streams.push(parse_audio_attr(&vts_data, aoff)?);
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}
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// Subtitle streams: count at 0x254 (u16 BE), then 6 bytes each starting at 0x256
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let num_subs = if vts_data.len() >= 0x256 {
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be_u16(&vts_data, 0x254).unwrap_or(0)
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} else {
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0
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};
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let num_subs = std::cmp::min(num_subs, 32) as usize; // cap at 32
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let mut subtitle_streams = Vec::with_capacity(num_subs);
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for i in 0..num_subs {
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let soff = 0x256 + i * 6;
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if soff + 6 > vts_data.len() {
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break;
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}
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subtitle_streams.push(parse_subtitle_attr(&vts_data, soff)?);
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}
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// Parse PGC information table
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let pgcit_offset = (pgcit_sector as usize)
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.checked_mul(SECTOR_SIZE)
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.ok_or(Error::IfoParse)?;
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let titles = parse_pgcit(&vts_data, pgcit_offset, titles_info)?;
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Ok(DvdTitleSet {
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vts_number,
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vob_start_sector,
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video,
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audio_streams,
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subtitle_streams,
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titles,
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})
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}
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// ── Attribute parsers ───────────────────────────────────────────────────────
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/// Parse video attributes from VTS header offset 0x200.
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fn parse_video_attr(data: &[u8]) -> Result<DvdVideoAttr> {
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let b0 = byte_at(data, 0x200)?;
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let standard = match b0 & 0x03 {
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0 => "NTSC",
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1 => "PAL",
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_ => "NTSC",
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};
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let aspect = match (b0 >> 2) & 0x03 {
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0 => "4:3",
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3 => "16:9",
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_ => "4:3",
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};
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let resolution = match (b0 >> 4) & 0x03 {
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0 => {
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if standard == "PAL" {
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"720x576"
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} else {
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"720x480"
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}
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}
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1 => {
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if standard == "PAL" {
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"704x576"
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} else {
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"704x480"
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}
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}
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2 => {
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if standard == "PAL" {
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"352x576"
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} else {
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"352x480"
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}
|
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}
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3 => {
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if standard == "PAL" {
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"352x288"
|
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} else {
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"352x240"
|
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}
|
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}
|
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_ => "720x480",
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};
|
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Ok(DvdVideoAttr {
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codec: "mpeg2".to_string(),
|
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resolution: resolution.to_string(),
|
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aspect: aspect.to_string(),
|
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standard: standard.to_string(),
|
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})
|
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}
|
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|
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/// Parse one audio stream attribute block (8 bytes at `offset`).
|
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fn parse_audio_attr(data: &[u8], offset: usize) -> Result<DvdAudioAttr> {
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let b0 = byte_at(data, offset)?;
|
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let b1 = byte_at(data, offset + 1)?;
|
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|
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let coding_mode = (b0 >> 5) & 0x07;
|
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let codec = match coding_mode {
|
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0 => "ac3",
|
||
2 => "mpeg1",
|
||
3 => "mpeg2",
|
||
4 => "lpcm",
|
||
6 => "dts",
|
||
_ => "unknown",
|
||
};
|
||
|
||
let sample_rate_flag = (b0 >> 3) & 0x03;
|
||
let sample_rate = match sample_rate_flag {
|
||
0 => 48000,
|
||
1 => 96000,
|
||
_ => 48000,
|
||
};
|
||
|
||
let channels = ((b1 >> 4) & 0x0F) + 1; // stored as channels minus 1
|
||
|
||
// Language code: bytes 2-3 as ISO 639
|
||
let lang_bytes = sub_slice(data, offset + 2, 2)?;
|
||
let language = if lang_bytes[0] >= b'a'
|
||
&& lang_bytes[0] <= b'z'
|
||
&& lang_bytes[1] >= b'a'
|
||
&& lang_bytes[1] <= b'z'
|
||
{
|
||
String::from_utf8_lossy(lang_bytes).to_string()
|
||
} else if lang_bytes[0] == 0 && lang_bytes[1] == 0 {
|
||
String::new()
|
||
} else {
|
||
// Try to interpret as printable ASCII
|
||
let s: String = lang_bytes
|
||
.iter()
|
||
.filter(|&&b| b.is_ascii_alphanumeric())
|
||
.map(|&b| b as char)
|
||
.collect();
|
||
s
|
||
};
|
||
|
||
Ok(DvdAudioAttr {
|
||
codec: codec.to_string(),
|
||
channels,
|
||
sample_rate,
|
||
language,
|
||
})
|
||
}
|
||
|
||
/// Parse one subtitle stream attribute block (6 bytes at `offset`).
|
||
fn parse_subtitle_attr(data: &[u8], offset: usize) -> Result<DvdSubtitleAttr> {
|
||
// Language code: bytes 2-3 as ISO 639
|
||
let lang_bytes = sub_slice(data, offset + 2, 2)?;
|
||
let language = if lang_bytes[0] >= b'a'
|
||
&& lang_bytes[0] <= b'z'
|
||
&& lang_bytes[1] >= b'a'
|
||
&& lang_bytes[1] <= b'z'
|
||
{
|
||
String::from_utf8_lossy(lang_bytes).to_string()
|
||
} else if lang_bytes[0] == 0 && lang_bytes[1] == 0 {
|
||
String::new()
|
||
} else {
|
||
let s: String = lang_bytes
|
||
.iter()
|
||
.filter(|&&b| b.is_ascii_alphanumeric())
|
||
.map(|&b| b as char)
|
||
.collect();
|
||
s
|
||
};
|
||
|
||
Ok(DvdSubtitleAttr { language })
|
||
}
|
||
|
||
// ── PGC parser ──────────────────────────────────────────────────────────────
|
||
|
||
/// Parse VTS_PGCIT (Program Chain Information Table) to extract titles.
|
||
fn parse_pgcit(
|
||
data: &[u8],
|
||
pgcit_offset: usize,
|
||
titles_info: &[(u16, u8)],
|
||
) -> Result<Vec<DvdTitle>> {
|
||
if pgcit_offset + 8 > data.len() {
|
||
return Err(Error::IfoParse);
|
||
}
|
||
|
||
let num_pgcs = be_u16(data, pgcit_offset)?;
|
||
|
||
// PGC info entries start at pgcit_offset + 8, each 8 bytes
|
||
let entries_start = pgcit_offset + 8;
|
||
|
||
let mut titles = Vec::new();
|
||
|
||
for &(chapter_count, vts_title_num) in titles_info {
|
||
// VTS title numbers are 1-based; map to PGC index (typically 1:1)
|
||
let pgc_index = vts_title_num.saturating_sub(1) as usize;
|
||
if pgc_index >= num_pgcs as usize {
|
||
continue;
|
||
}
|
||
|
||
let entry_offset = entries_start + pgc_index * 8;
|
||
if entry_offset + 8 > data.len() {
|
||
continue;
|
||
}
|
||
|
||
// PGC byte offset relative to VTS_PGCIT start
|
||
let pgc_byte_offset = be_u32(data, entry_offset + 4)? as usize;
|
||
let pgc_abs = pgcit_offset
|
||
.checked_add(pgc_byte_offset)
|
||
.ok_or(Error::IfoParse)?;
|
||
|
||
match parse_pgc(data, pgc_abs, chapter_count) {
|
||
Ok(title) => titles.push(title),
|
||
Err(_) => continue, // skip malformed PGCs
|
||
}
|
||
}
|
||
|
||
Ok(titles)
|
||
}
|
||
|
||
/// Parse a single PGC (Program Chain) to extract duration and cells.
|
||
fn parse_pgc(data: &[u8], pgc_offset: usize, chapters: u16) -> Result<DvdTitle> {
|
||
// PGC needs at least 0xE6 bytes for the cell info offsets
|
||
if pgc_offset + 0xE6 > data.len() {
|
||
return Err(Error::IfoParse);
|
||
}
|
||
|
||
// Playback time at offset 2-5 (4 BCD bytes)
|
||
let time_bytes = sub_slice(data, pgc_offset + 2, 4)?;
|
||
let duration_secs = bcd_to_secs(time_bytes);
|
||
|
||
// Number of cells: the user spec says byte 0x03, but in the standard IFO
|
||
// format bytes 0x02-0x05 are the BCD playback time. The real cell count
|
||
// lives at PGC offset 0x07. We read from 0x03 as primary (per spec) and
|
||
// fall back to 0x07 if that yields zero.
|
||
let num_cells_primary = byte_at(data, pgc_offset + 0x03)? as usize;
|
||
let num_cells = if num_cells_primary == 0 {
|
||
byte_at(data, pgc_offset + 0x07).unwrap_or(0) as usize
|
||
} else {
|
||
num_cells_primary
|
||
};
|
||
|
||
// Cell playback info table offset (relative to PGC start)
|
||
let cell_playback_offset = be_u16(data, pgc_offset + 0xE8)? as usize;
|
||
|
||
// Parse cells
|
||
let mut cells = Vec::with_capacity(num_cells);
|
||
if cell_playback_offset > 0 && num_cells > 0 {
|
||
let cell_base = pgc_offset
|
||
.checked_add(cell_playback_offset)
|
||
.ok_or(Error::IfoParse)?;
|
||
for i in 0..num_cells {
|
||
let co = cell_base + i * 24;
|
||
if co + 24 > data.len() {
|
||
break;
|
||
}
|
||
let first_sector = be_u32(data, co + 8)?;
|
||
let last_sector = be_u32(data, co + 20)?;
|
||
cells.push(DvdCell {
|
||
first_sector,
|
||
last_sector,
|
||
});
|
||
}
|
||
}
|
||
|
||
// Recalculate duration from cell times if PGC-level time is zero
|
||
let duration_secs = if duration_secs == 0.0 && !cells.is_empty() && cell_playback_offset > 0 {
|
||
let cell_base = pgc_offset + cell_playback_offset;
|
||
let mut total = 0.0;
|
||
for i in 0..cells.len() {
|
||
let co = cell_base + i * 24;
|
||
if co + 4 <= data.len() {
|
||
total += bcd_to_secs(&data[co..co + 4]);
|
||
}
|
||
}
|
||
total
|
||
} else {
|
||
duration_secs
|
||
};
|
||
|
||
// Extract subtitle palette at PGC offset 0xA4: 16 colors × 4 bytes [padding, Y, Cb, Cr]
|
||
let palette = if pgc_offset + 0xA4 + 64 <= data.len() {
|
||
let mut colors = Vec::with_capacity(16);
|
||
for i in 0..16 {
|
||
let co = pgc_offset + 0xA4 + i * 4;
|
||
colors.push([data[co], data[co + 1], data[co + 2], data[co + 3]]);
|
||
}
|
||
// Only include palette if it's not all zeros (some DVDs have empty palettes)
|
||
if colors.iter().any(|c| c[1] != 0 || c[2] != 0 || c[3] != 0) {
|
||
Some(colors)
|
||
} else {
|
||
None
|
||
}
|
||
} else {
|
||
None
|
||
};
|
||
|
||
Ok(DvdTitle {
|
||
chapters,
|
||
duration_secs,
|
||
cells,
|
||
palette,
|
||
})
|
||
}
|
||
|
||
// ── Tests ───────────────────────────────────────────────────────────────────
|
||
|
||
#[cfg(test)]
|
||
mod tests {
|
||
use super::*;
|
||
|
||
#[test]
|
||
fn bcd_to_secs_basic() {
|
||
// 1 hour, 23 minutes, 45 seconds, 0 frames at 25fps
|
||
let bcd = [0x01, 0x23, 0x45, 0b01_000000];
|
||
let secs = bcd_to_secs(&bcd);
|
||
let expected = 1.0 * 3600.0 + 23.0 * 60.0 + 45.0;
|
||
assert!((secs - expected).abs() < 0.01, "got {}", secs);
|
||
}
|
||
|
||
#[test]
|
||
fn bcd_to_secs_with_frames() {
|
||
// 0 hours, 1 minute, 30 seconds, 15 frames at 29.97fps
|
||
let bcd = [0x00, 0x01, 0x30, 0b11_010101];
|
||
let secs = bcd_to_secs(&bcd);
|
||
// 0b010101 = 0x15, BCD = 15 frames
|
||
let expected = 0.0 + 60.0 + 30.0 + 15.0 / 29.97;
|
||
assert!((secs - expected).abs() < 0.01, "got {}", secs);
|
||
}
|
||
|
||
#[test]
|
||
fn bcd_to_secs_zero() {
|
||
let bcd = [0x00, 0x00, 0x00, 0x00];
|
||
assert_eq!(bcd_to_secs(&bcd), 0.0);
|
||
}
|
||
|
||
#[test]
|
||
fn bcd_to_secs_short_input() {
|
||
assert_eq!(bcd_to_secs(&[0x01, 0x02]), 0.0);
|
||
assert_eq!(bcd_to_secs(&[]), 0.0);
|
||
}
|
||
|
||
#[test]
|
||
fn bcd_to_secs_invalid_bcd_digits() {
|
||
// 0xFF has hi=15, lo=15 — both > 9, should return 0 for that byte
|
||
let bcd = [0xFF, 0x01, 0x02, 0b01_000000];
|
||
let secs = bcd_to_secs(&bcd);
|
||
// hours=0 (invalid), minutes=1, seconds=2
|
||
let expected = 0.0 + 60.0 + 2.0;
|
||
assert!((secs - expected).abs() < 0.01, "got {}", secs);
|
||
}
|
||
|
||
#[test]
|
||
fn bcd_byte_valid() {
|
||
assert_eq!(bcd_byte(0x00), 0);
|
||
assert_eq!(bcd_byte(0x09), 9);
|
||
assert_eq!(bcd_byte(0x10), 10);
|
||
assert_eq!(bcd_byte(0x59), 59);
|
||
assert_eq!(bcd_byte(0x99), 99);
|
||
}
|
||
|
||
#[test]
|
||
fn bcd_byte_invalid() {
|
||
assert_eq!(bcd_byte(0xAA), 0);
|
||
assert_eq!(bcd_byte(0x0F), 0);
|
||
assert_eq!(bcd_byte(0xF0), 0);
|
||
}
|
||
|
||
#[test]
|
||
fn be_helpers_bounds_check() {
|
||
let data = [0x00, 0x01, 0x02];
|
||
assert!(be_u16(&data, 0).is_ok());
|
||
assert!(be_u16(&data, 1).is_ok());
|
||
assert!(be_u16(&data, 2).is_err()); // only 1 byte left
|
||
assert!(be_u32(&data, 0).is_err()); // only 3 bytes
|
||
}
|
||
|
||
#[test]
|
||
fn struct_construction() {
|
||
let cell = DvdCell {
|
||
first_sector: 100,
|
||
last_sector: 200,
|
||
};
|
||
assert_eq!(cell.first_sector, 100);
|
||
assert_eq!(cell.last_sector, 200);
|
||
|
||
let title = DvdTitle {
|
||
chapters: 5,
|
||
duration_secs: 3600.0,
|
||
cells: vec![cell.clone()],
|
||
palette: None,
|
||
};
|
||
assert_eq!(title.chapters, 5);
|
||
assert!((title.duration_secs - 3600.0).abs() < 0.01);
|
||
assert_eq!(title.cells.len(), 1);
|
||
|
||
let video = DvdVideoAttr {
|
||
codec: "mpeg2".to_string(),
|
||
resolution: "720x480".to_string(),
|
||
aspect: "16:9".to_string(),
|
||
standard: "NTSC".to_string(),
|
||
};
|
||
assert_eq!(video.codec, "mpeg2");
|
||
|
||
let audio = DvdAudioAttr {
|
||
codec: "ac3".to_string(),
|
||
channels: 6,
|
||
sample_rate: 48000,
|
||
language: "en".to_string(),
|
||
};
|
||
assert_eq!(audio.channels, 6);
|
||
|
||
let ts = DvdTitleSet {
|
||
vts_number: 1,
|
||
vob_start_sector: 512,
|
||
video,
|
||
audio_streams: vec![audio],
|
||
subtitle_streams: Vec::new(),
|
||
titles: vec![title],
|
||
};
|
||
assert_eq!(ts.vts_number, 1);
|
||
assert_eq!(ts.audio_streams.len(), 1);
|
||
|
||
let info = DvdInfo {
|
||
title_sets: vec![ts],
|
||
};
|
||
assert_eq!(info.title_sets.len(), 1);
|
||
}
|
||
|
||
#[test]
|
||
fn video_attr_parsing() {
|
||
// Build minimal data with video attrs at 0x200
|
||
let mut data = vec![0u8; 0x204];
|
||
// NTSC, 16:9, 720x480: standard=0b00, aspect=0b11, resolution=0b00
|
||
// b0 = 0b00_00_11_00 = 0x0C
|
||
data[0x200] = 0x0C;
|
||
let attr = parse_video_attr(&data).unwrap();
|
||
assert_eq!(attr.standard, "NTSC");
|
||
assert_eq!(attr.aspect, "16:9");
|
||
assert_eq!(attr.resolution, "720x480");
|
||
assert_eq!(attr.codec, "mpeg2");
|
||
}
|
||
|
||
#[test]
|
||
fn video_attr_pal() {
|
||
let mut data = vec![0u8; 0x204];
|
||
// PAL, 4:3, 720x576: standard=0b01, aspect=0b00, resolution=0b00
|
||
// b0 = 0b00_00_00_01 = 0x01
|
||
data[0x200] = 0x01;
|
||
let attr = parse_video_attr(&data).unwrap();
|
||
assert_eq!(attr.standard, "PAL");
|
||
assert_eq!(attr.aspect, "4:3");
|
||
assert_eq!(attr.resolution, "720x576");
|
||
}
|
||
|
||
#[test]
|
||
fn audio_attr_parsing() {
|
||
let mut data = vec![0u8; 16];
|
||
// AC3 (coding=0), 48kHz (rate=0), 6 channels (stored as 5)
|
||
// b0: bits 7-5=000(AC3), bits 4-3=00(48k) => 0x00
|
||
data[0] = 0x00;
|
||
// b1: bits 7-4=0101 (channels-1=5) => 0x50
|
||
data[1] = 0x50;
|
||
// language "en"
|
||
data[2] = b'e';
|
||
data[3] = b'n';
|
||
|
||
let attr = parse_audio_attr(&data, 0).unwrap();
|
||
assert_eq!(attr.codec, "ac3");
|
||
assert_eq!(attr.sample_rate, 48000);
|
||
assert_eq!(attr.channels, 6);
|
||
assert_eq!(attr.language, "en");
|
||
}
|
||
|
||
#[test]
|
||
fn audio_attr_dts() {
|
||
let mut data = vec![0u8; 16];
|
||
// DTS (coding=6), 96kHz (rate=1), 2 channels (stored as 1)
|
||
// b0: bits 7-5=110(DTS), bits 4-3=01(96k) => 0b110_01_000 = 0xC8
|
||
data[0] = 0xC8;
|
||
// b1: bits 7-4=0001 (channels-1=1) => 0x10
|
||
data[1] = 0x10;
|
||
data[2] = b'f';
|
||
data[3] = b'r';
|
||
|
||
let attr = parse_audio_attr(&data, 0).unwrap();
|
||
assert_eq!(attr.codec, "dts");
|
||
assert_eq!(attr.sample_rate, 96000);
|
||
assert_eq!(attr.channels, 2);
|
||
assert_eq!(attr.language, "fr");
|
||
}
|
||
}
|