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ADM Validator namespace
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@VoidXH
VoidXH committed Nov 13, 2023
1 parent 25a3f17 commit f99b4b7
Showing 1 changed file with 95 additions and 93 deletions.
188 changes: 95 additions & 93 deletions CavernSamples/ADMValidator/Program.cs
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Expand Up @@ -3,114 +3,116 @@
using Cavern.Format.Transcoders;
using Cavern.Format.Transcoders.AudioDefinitionModelElements;

static class Program {
/// <summary>
/// Entry point to the program.
/// </summary>
static void Main(string[] args) {
if (args.Length == 0) {
Console.WriteLine("Please drag and drop a file or add it as an argument.");
BeforeExit();
return;
}

if (!File.Exists(args[0])) {
Console.WriteLine("The file in the argument does not exist.");
BeforeExit();
return;
}

Console.WriteLine("Loading the file, this might take a while...");
Stream reader;
RIFFWaveTester decoder;
try {
reader = new FileStream(args[0], FileMode.Open, FileAccess.Read, FileShare.Read, 10 * 1024 * 1024, FileOptions.SequentialScan);
decoder = new RIFFWaveTester(reader);
} catch (Exception e) {
Console.WriteLine("This file is either corrupt or not an ADM BWF:");
Console.WriteLine(e.Message);
BeforeExit();
return;
}
namespace ADMValidator {
static class Program {
/// <summary>
/// Entry point to the program.
/// </summary>
static void Main(string[] args) {
if (args.Length == 0) {
Console.WriteLine("Please drag and drop a file or add it as an argument.");
BeforeExit();
return;
}

Console.WriteLine();
Console.WriteLine("Chunklist:");
for (int i = 0, c = decoder.ChunkSizes.Count; i < c; i++) {
Console.WriteLine($" - {decoder.ChunkSizes[i].chunk}: {decoder.ChunkSizes[i].size}");
}
Console.WriteLine("Total subchunk size: " + (decoder.ChunkSizes.Sum(x => x.size + 8) + 12 /* RIFF + size + WAVE */));
Console.WriteLine("Self-reported size: " + decoder.FileLength);
Console.WriteLine("Actual size: " + reader.Position);
Console.WriteLine();
if (!File.Exists(args[0])) {
Console.WriteLine("The file in the argument does not exist.");
BeforeExit();
return;
}

AudioDefinitionModel adm = decoder.ADM;
if (adm == null) {
Console.WriteLine("This file does not contain an AXML block, thus it's not a valid ADM BWF file.");
BeforeExit();
return;
}
Console.WriteLine("Loading the file, this might take a while...");
Stream reader;
RIFFWaveTester decoder;
try {
reader = new FileStream(args[0], FileMode.Open, FileAccess.Read, FileShare.Read, 10 * 1024 * 1024, FileOptions.SequentialScan);
decoder = new RIFFWaveTester(reader);
} catch (Exception e) {
Console.WriteLine("This file is either corrupt or not an ADM BWF:");
Console.WriteLine(e.Message);
BeforeExit();
return;
}

List<string> errors = adm.Validate();
long admLength = (long)(adm.GetLength().TotalSeconds * decoder.SampleRate + .5);
if (decoder.Length != admLength) {
errors.Add($"The PCM length in the RIFF header ({decoder.Length}) does not match with the ADM program length ({admLength}).");
}
if (decoder.RF64Mismatch) {
errors.Add("One or more subchunks over 4 GB have incorrect size overrides.");
}
if (reader.Position < decoder.FileLength) {
errors.Add($"The file is truncated. Expected length is {decoder.FileLength} B, actual length is {reader.Position} B.");
} else if (reader.Position > decoder.FileLength) {
errors.Add($"The file is longer than the header says by {reader.Position - decoder.FileLength} bytes.");
}
Console.WriteLine();
Console.WriteLine("Chunklist:");
for (int i = 0, c = decoder.ChunkSizes.Count; i < c; i++) {
Console.WriteLine($" - {decoder.ChunkSizes[i].chunk}: {decoder.ChunkSizes[i].size}");
}
Console.WriteLine("Total subchunk size: " + (decoder.ChunkSizes.Sum(x => x.size + 8) + 12 /* RIFF + size + WAVE */));
Console.WriteLine("Self-reported size: " + decoder.FileLength);
Console.WriteLine("Actual size: " + reader.Position);
Console.WriteLine();

if (decoder.DBMD != null) {
if (!decoder.DwordAligned) {
errors.Add("The subchunks are not DWORD-aligned. The Dolby importer won't detect this file.");
AudioDefinitionModel adm = decoder.ADM;
if (adm == null) {
Console.WriteLine("This file does not contain an AXML block, thus it's not a valid ADM BWF file.");
BeforeExit();
return;
}

List<string> tracks = adm.Objects[0].Tracks;
if (tracks.Count != 10) {
errors.Add("An invalid number of bed channels are present.");
List<string> errors = adm.Validate();
long admLength = (long)(adm.GetLength().TotalSeconds * decoder.SampleRate + .5);
if (decoder.Length != admLength) {
errors.Add($"The PCM length in the RIFF header ({decoder.Length}) does not match with the ADM program length ({admLength}).");
}
if (decoder.RF64Mismatch) {
errors.Add("One or more subchunks over 4 GB have incorrect size overrides.");
}
if (reader.Position < decoder.FileLength) {
errors.Add($"The file is truncated. Expected length is {decoder.FileLength} B, actual length is {reader.Position} B.");
} else if (reader.Position > decoder.FileLength) {
errors.Add($"The file is longer than the header says by {reader.Position - decoder.FileLength} bytes.");
}

ADMPackFormat pack = adm.PackFormats.FirstOrDefault(x => x.ID == adm.Objects[0].PackFormat);
if (pack != null) {
tracks = pack.ChannelFormats;
for (int i = 0, c = tracks.Count; i < c; i++) {
ADMChannelFormat map = adm.ChannelFormats.FirstOrDefault(x => x.ID == tracks[i]);
if (map == null || map.Blocks.Count != 1 ||
map.Blocks[0].Position != ChannelPrototype.AlternativePositions[bedChannels[i]]) {
errors.Add($"Bed channel {tracks[i]} is invalid.");
if (decoder.DBMD != null) {
if (!decoder.DwordAligned) {
errors.Add("The subchunks are not DWORD-aligned. The Dolby importer won't detect this file.");
}

List<string> tracks = adm.Objects[0].Tracks;
if (tracks.Count != 10) {
errors.Add("An invalid number of bed channels are present.");
}

ADMPackFormat pack = adm.PackFormats.FirstOrDefault(x => x.ID == adm.Objects[0].PackFormat);
if (pack != null) {
tracks = pack.ChannelFormats;
for (int i = 0, c = tracks.Count; i < c; i++) {
ADMChannelFormat map = adm.ChannelFormats.FirstOrDefault(x => x.ID == tracks[i]);
if (map == null || map.Blocks.Count != 1 ||
map.Blocks[0].Position != ChannelPrototype.AlternativePositions[bedChannels[i]]) {
errors.Add($"Bed channel {tracks[i]} is invalid.");
}
}
}
} else {
Console.WriteLine("No Dolby Atmos metadata was detected.");
}
} else {
Console.WriteLine("No Dolby Atmos metadata was detected.");
}

if (errors.Count == 0) {
Console.WriteLine("This is a valid ADM BWF file.");
} else {
Console.WriteLine("The following errors invalidate this ADM BWF file:");
for (int i = 0, c = errors.Count; i < c; i++) {
Console.WriteLine(" - " + errors[i]);
if (errors.Count == 0) {
Console.WriteLine("This is a valid ADM BWF file.");
} else {
Console.WriteLine("The following errors invalidate this ADM BWF file:");
for (int i = 0, c = errors.Count; i < c; i++) {
Console.WriteLine(" - " + errors[i]);
}
}

BeforeExit();
}

BeforeExit();
}
/// <summary>
/// Displays the press any key to exit message and waits for a key press.
/// </summary>
static void BeforeExit() {
Console.WriteLine("Press any key to exit the program...");
Console.ReadKey();
}

/// <summary>
/// Displays the press any key to exit message and waits for a key press.
/// </summary>
static void BeforeExit() {
Console.WriteLine("Press any key to exit the program...");
Console.ReadKey();
/// <summary>
/// Indexes of Dolby Atmos beds (7.1.2) in the <see cref="ReferenceChannel"/> enum.
/// </summary>
static readonly byte[] bedChannels = { 0, 1, 2, 3, 6, 7, 4, 5, 17, 18 };
}

/// <summary>
/// Indexes of Dolby Atmos beds (7.1.2) in the <see cref="ReferenceChannel"/> enum.
/// </summary>
static readonly byte[] bedChannels = { 0, 1, 2, 3, 6, 7, 4, 5, 17, 18 };
}

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