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Find complete frame markers.

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This commit is contained in:
Natalia Portillo
2019-01-30 20:35:49 +00:00
parent b245110853
commit f92a3aaf63
1 changed files with 39 additions and 3 deletions
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42
DiscImageChef.VideoNow/Program.cs
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@@ -43,10 +43,38 @@ namespace DiscImageChef.VideoNow
static string AssemblyCopyright;
static string AssemblyTitle;
static AssemblyInformationalVersionAttribute AssemblyVersion;
//
/// <summary>
/// This is some kind of header. Every 10 bytes there's an audio byte. Here it is without reordering from little
/// endian, so the first appearence is at 9th byte.
/// </summary>
static readonly byte[] frameMarker =
{
0xE3, 0x81, 0xC7, 0xE3, 0x81, 0xC7, 0xE3, 0x81
};
{
0xE3, 0x81, 0xC7, 0xE3, 0x81, 0xC7, 0xE3, 0x81, 0x00, 0xC7, 0xE3, 0x81, 0xC7, 0xE3, 0x81, 0xC7, 0xE3,
0x81, 0x00, 0xC7, 0xE3, 0x81, 0xC7, 0xE3, 0x81, 0xC7, 0xE3, 0x81, 0x00, 0xC7, 0xE3, 0x81, 0xC7, 0xE3,
0x81, 0xC7, 0xE3, 0x81, 0x00, 0xC7, 0xE3, 0x81, 0xC7, 0xE3, 0x81, 0xC7, 0xE3, 0x81, 0x00, 0xC7, 0xE3,
0x81, 0xC7, 0xE3, 0x81, 0xC7, 0xE3, 0x81, 0x00, 0xC7, 0xE3, 0x81, 0xC7, 0xE3, 0x81, 0xC7, 0xE3, 0x81,
0x00, 0xC7, 0xE3, 0x81, 0xC7, 0xE3, 0x81, 0xC7, 0xE3, 0x81, 0x00, 0xC7, 0xE3, 0x81, 0xC7, 0xE3, 0x81,
0xC7, 0xE3, 0x81, 0x00, 0xC7, 0xE3, 0x81, 0xC7, 0xE3, 0x81, 0xC7, 0xE3, 0x81, 0x00, 0xC7, 0xE3, 0x81,
0xC7, 0xE3, 0x81, 0xC7, 0xE3, 0x81, 0x00, 0xC7, 0xE3, 0x81, 0xC7, 0xE3, 0x81, 0xC7, 0xE3, 0x81, 0x00,
0xC7, 0xE3, 0x81, 0xC7, 0xE3, 0x81, 0xC7, 0xE3, 0x81, 0x00, 0xC7, 0xE3, 0x81, 0xC7, 0xE3, 0x81, 0xC7,
0xE3, 0x81, 0x00, 0xC7, 0xE3, 0x81, 0xC7, 0xE3, 0x81, 0xC7, 0xE3, 0x81, 0x00, 0xC7, 0xE3, 0x81, 0xC7,
0xE3, 0x81, 0xC7, 0xE3, 0x81, 0x00, 0xC7, 0xE3, 0x81, 0xC7, 0xE3, 0x81, 0xC7, 0xE3, 0x81, 0x00, 0xC7,
0xE3, 0x81, 0xC7, 0xE3, 0x81, 0xC7, 0xE3, 0x81, 0x00, 0xC7, 0xE3, 0x81, 0xC7, 0xE3, 0x81, 0xC7, 0xE3,
0x81, 0x00, 0xC7, 0xE3, 0x81, 0xC7, 0xE3, 0x81, 0xC7, 0xE3, 0x81, 0x00, 0xC7, 0xE3, 0x81, 0xC7, 0xE3,
0x81, 0xC7, 0xE3, 0x81, 0x00, 0xC7, 0xE3, 0x81, 0xC7, 0xE3, 0x81, 0xC7, 0xE3, 0x81, 0x00, 0xC7, 0xE3,
0x81, 0xC7, 0xE3, 0x81, 0xC7, 0xE3, 0x81, 0x00, 0xC7, 0xE3, 0x81, 0xC7, 0xE3, 0x81, 0xC7, 0xE3, 0x81,
0x00, 0xC7, 0x00, 0x00, 0x01, 0x02, 0x02, 0x04, 0x03, 0x06, 0x00, 0xFF, 0x04, 0x08, 0x05, 0x0A, 0x06,
0x0C, 0x07, 0x0E, 0x00, 0xFF, 0x08, 0x11, 0x09, 0x13, 0x0A, 0x15, 0x0B, 0x17, 0x00, 0xFF, 0x0C, 0x19,
0x0D, 0x1B, 0x0E, 0x1D, 0x0F, 0x1F, 0x00, 0xFF, 0x28, 0x00, 0x29, 0x02, 0x2A, 0x04, 0x2B, 0x06, 0x00,
0xFF, 0x2C, 0x08, 0x2D, 0x0A, 0x2E, 0x0C, 0x2F, 0x0E, 0x00, 0xFF, 0x30, 0x11, 0x31, 0x13, 0x32, 0x15,
0x33, 0x17, 0x00, 0xFF, 0x34, 0x19, 0x35, 0x1B, 0x36, 0x1D, 0x37, 0x1F, 0x00, 0xFF, 0x38, 0x00, 0x39,
0x02, 0x3A, 0x04, 0x3B, 0x06, 0x00, 0xFF, 0x3C, 0x08, 0x3D, 0x0A, 0x3E, 0x0C, 0x3F, 0x0E, 0x00, 0xFF,
0x40, 0x11, 0x41, 0x13, 0x42, 0x15, 0x43, 0x17, 0x00, 0xFF, 0x44, 0x19, 0x45, 0x1B, 0x46, 0x1D, 0x47,
0x1F, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0xFF
};
public static void Main(string[] args)
{
@@ -97,11 +125,15 @@ namespace DiscImageChef.VideoNow
fs.Position = framePosition;
fs.Read(buffer, 0, buffer.Length);
for(int ab = 8; ab < buffer.Length; ab += 10) buffer[ab] = 0;
if(buffer.SequenceEqual(frameMarker)) break;
framePosition++;
}
for(int ab = 8; ab < buffer.Length; ab += 10) buffer[ab] = 0;
if(!buffer.SequenceEqual(frameMarker))
{
Console.WriteLine("Could not find any frame!");
@@ -135,6 +167,8 @@ namespace DiscImageChef.VideoNow
Console.Write("\rLooking for more frames {0}", progress);
for(int ab = 8; ab < buffer.Length; ab += 10) buffer[ab] = 0;
if(!buffer.SequenceEqual(frameMarker))
{
Console.Write("\r \r");
@@ -146,6 +180,8 @@ namespace DiscImageChef.VideoNow
fs.Position = framePosition;
fs.Read(buffer, 0, buffer.Length);
for(int ab = 8; ab < buffer.Length; ab += 10) buffer[ab] = 0;
if(buffer.SequenceEqual(frameMarker))
{
totalFrames++;