protected override TableOfContents ReadTableOfContents(string device, DiscReadFeature features)
{
using (var fd = NativeApi.OpenDevice(device)) {
if (fd.IsInvalid)
{
throw new IOException($"Failed to open '{device}'.", new UnixException());
}
// Read the TOC itself
NativeApi.ReadTOC(fd, out var first, out var last, out var rawtracks, this.AddressesAreNative);
var tracks = new Track[rawtracks.Length];
var i = 0;
if (first > 0)
{
for (var trackno = first; trackno <= last; ++trackno, ++i) // Add the regular tracks.
{
if (rawtracks[i].TrackNumber != trackno)
{
throw new InvalidDataException($"Internal logic error; first track is {first}, but entry at index {i} claims to be track {rawtracks[i].TrackNumber} instead of {trackno}.");
}
var isrc = ((features & DiscReadFeature.TrackIsrc) != 0) ? NativeApi.GetTrackIsrc(fd, trackno) : null;
tracks[trackno] = new Track(rawtracks[i].Address, rawtracks[i].ControlAndADR.Control, isrc);
}
}
// Next entry should be the lead-out (track number 0xAA)
if (rawtracks[i].TrackNumber != 0xAA)
{
throw new InvalidDataException($"Internal logic error; track data ends with a record that reports track number {rawtracks[i].TrackNumber} instead of 0xAA (lead-out).");
}
tracks[0] = new Track(rawtracks[i].Address, rawtracks[i].ControlAndADR.Control, null);
var mcn = ((features & DiscReadFeature.MediaCatalogNumber) != 0) ? NativeApi.GetMediaCatalogNumber(fd) : null;
// TODO: Find out how to get CD-TEXT data.
return(new TableOfContents(device, first, last, tracks, mcn, null));
}
}
TableOfContents IPlatform.ReadTableOfContents(string device, DiscReadFeature features)
{
if (string.IsNullOrWhiteSpace(device)) // Map null/blanks to the default device
{
device = this.DefaultDevice;
}
if (device == null) // But we do need a device at this point
{
throw new NotSupportedException("No cd-rom device found.");
}
// Mask off unsupported features
features &= this._features;
return(this.ReadTableOfContents(device, features));
}
protected override TableOfContents ReadTableOfContents(string device, DiscReadFeature features)
{
using (var fd = NativeApi.OpenDevice(device)) {
if (fd.IsInvalid)
{
throw new IOException($"Failed to open '{device}'.", new UnixException());
}
byte first = 0;
byte last = 0;
Track[] tracks = null;
{ // Read the TOC itself
NativeApi.GetTableOfContents(fd, out MMC.TOCDescriptor rawtoc);
first = rawtoc.FirstTrack;
last = rawtoc.LastTrack;
tracks = new Track[last + 1];
var i = 0;
for (var trackno = rawtoc.FirstTrack; trackno <= rawtoc.LastTrack; ++trackno, ++i) // Add the regular tracks.
{
if (rawtoc.Tracks[i].TrackNumber != trackno)
{
throw new InvalidDataException($"Internal logic error; first track is {rawtoc.FirstTrack}, but entry at index {i} claims to be track {rawtoc.Tracks[i].TrackNumber} instead of {trackno}.");
}
var isrc = ((features & DiscReadFeature.TrackIsrc) != 0) ? NativeApi.GetTrackIsrc(fd, trackno) : null;
tracks[trackno] = new Track(rawtoc.Tracks[i].Address, rawtoc.Tracks[i].ControlAndADR.Control, isrc);
}
// Next entry should be the lead-out (track number 0xAA)
if (rawtoc.Tracks[i].TrackNumber != 0xAA)
{
throw new InvalidDataException($"Internal logic error; track data ends with a record that reports track number {rawtoc.Tracks[i].TrackNumber} instead of 0xAA (lead-out).");
}
tracks[0] = new Track(rawtoc.Tracks[i].Address, rawtoc.Tracks[i].ControlAndADR.Control, null);
}
var mcn = ((features & DiscReadFeature.MediaCatalogNumber) != 0) ? NativeApi.GetMediaCatalogNumber(fd) : null;
RedBook.CDTextGroup?cdtg = null;
if ((features & DiscReadFeature.CdText) != 0)
{
NativeApi.GetCdTextInfo(fd, out MMC.CDTextDescriptor cdtext);
if (cdtext.Data.Packs != null)
{
cdtg = cdtext.Data;
}
}
return(new TableOfContents(device, first, last, tracks, mcn, cdtg));
}
}
protected Unix(DiscReadFeature features = DiscReadFeature.TableOfContents) : base(features)
{
}
protected override TableOfContents ReadTableOfContents(string device, DiscReadFeature features)
{
throw new NotImplementedException($"CD device access has not been implemented for this platform ({this.GetType().Name} {Environment.OSVersion}).");
}
/// <summary>Reads the table of contents for the current disc in the specified device, getting the requested information.</summary>
/// <param name="device">The name of the device to read from; null to read from <see cref="DefaultDevice"/>.</param>
/// <param name="features">The features to use (if supported). Note that the table of contents will always be read.</param>
public static TableOfContents ReadDisc(string device, DiscReadFeature features = DiscReadFeature.All)
{
return(TableOfContents.Platform.ReadTableOfContents(device, features));
}
/// <summary>Determines whether or not the specified feature is supported for use with <see cref="ReadDisc"/>.</summary> /// <param name="feature">The (single) feature to test.</param> /// <returns>true if the feature is supported; false otherwise.</returns> public static bool HasReadFeature(DiscReadFeature feature) => TableOfContents.Platform.HasFeature(feature);
protected override TableOfContents ReadTableOfContents(string device, DiscReadFeature features)
{
throw new PlatformNotSupportedException($"CD device access is not supported on this platform ({Environment.OSVersion}).");
}
protected abstract TableOfContents ReadTableOfContents(string device, DiscReadFeature features);
public bool HasFeature(DiscReadFeature feature) => (feature & this._features) != 0;
protected Platform(DiscReadFeature features)
{
this._features = features;
}
