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Viewing changes to external/maccore/src/CoreMedia/CMBlockBuffer.cs

  • Committer: Package Import Robot
  • Author(s): Jo Shields
  • Date: 2013-05-12 09:46:03 UTC
  • mto: This revision was merged to the branch mainline in revision 29.
  • Revision ID: package-import@ubuntu.com-20130512094603-mad323bzcxvmcam0
Tags: upstream-4.0.5+dfsg
Import upstream version 4.0.5+dfsg

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external/maccore/src/CoreMedia/CMBlockBuffer.cs
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// CMBlockBuffer.cs: Implements the managed CMBlockBuffer
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//
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// Authors: Mono Team
 
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//          Marek Safar (marek.safar@gmail.com)
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//     
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// Copyright 2010 Novell, Inc
 
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// Copyright 2012 Xamarin Inc
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//
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using System;
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using System.Runtime.InteropServices;
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namespace MonoMac.CoreMedia {
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        public enum CMBlockBufferError {
 
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                None                                            = 0,
 
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                StructureAllocationFailed       = -12700,
 
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                BlockAllocationFailed           = -12701,
 
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                BadCustomBlockSource            = -12702,
 
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                BadOffsetParameter                      = -12703,
 
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                BadLengthParameter                      = -12704,
 
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                BadPointerParameter                     = -12705,
 
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                EmptyBlockBuffer                        = -12706,
 
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                UnallocatedBlock                        = -12707,
 
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        }
 
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        [Flags]
 
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        public enum CMBlockBufferFlags : uint {
 
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                AssureMemoryNow                 = (1<<0),
 
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                AlwaysCopyData                  = (1<<1),
 
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                DontOptimizeDepth               = (1<<2),
 
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                PermitEmptyReference    = (1<<3)
 
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        }
 
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        [Since (4,0)]
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        public class CMBlockBuffer : INativeObject, IDisposable {
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                internal IntPtr handle;
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                                handle = IntPtr.Zero;
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                        }
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                }
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                [DllImport(Constants.CoreMediaLibrary)]
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                extern static int CMBlockBufferCopyDataBytes (IntPtr handle, uint offsetToData, uint dataLength, IntPtr destination);
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                public int CopyDataBytes (uint offsetToData, uint dataLength, IntPtr destination)
 
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                [DllImport(Constants.CoreMediaLibrary)]
 
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                extern static CMBlockBufferError CMBlockBufferCreateEmpty (IntPtr allocator, uint subBlockCapacity, CMBlockBufferFlags flags, out IntPtr output);
 
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                public static CMBlockBuffer CreateEmpty (uint subBlockCapacity, CMBlockBufferFlags flags, out CMBlockBufferError error)
 
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                {
 
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                        IntPtr buffer;
 
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                        error = CMBlockBufferCreateEmpty (IntPtr.Zero, subBlockCapacity, flags, out buffer);
 
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                        if (error != CMBlockBufferError.None)
 
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                                return null;
 
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                        return new CMBlockBuffer (buffer, true);
 
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                }
 
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                [DllImport(Constants.CoreMediaLibrary)]
 
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                extern static CMBlockBufferError CMBlockBufferCopyDataBytes (IntPtr handle, uint offsetToData, uint dataLength, IntPtr destination);
 
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                public CMBlockBufferError CopyDataBytes (uint offsetToData, uint dataLength, IntPtr destination)
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                {
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                        return CMBlockBufferCopyDataBytes (handle, offsetToData, dataLength, destination);
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                }