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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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38
DiscImageChef.VideoNow/Program.cs
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@@ -43,9 +43,37 @@ 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++;