Aegisub/FFmpegSource2/coparser.h

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/*
* Copyright (c) 2004-2008 Mike Matsnev. All Rights Reserved.
*
* $Id: CoParser.h,v 1.21 2008/03/29 15:41:28 mike Exp $
*
*/
#ifndef COPARSER_H
#define COPARSER_H
// Generic multimedia container parsers support
// random access stream, this will be provided by
// IMMContainer's client
[uuid("8E192E9F-E536-4027-8D46-664CC7A102C5")]
interface IMMStream : public IUnknown {
// read count bytes starting at position
STDMETHOD(Read)( unsigned long long position,
void *buffer,
unsigned int *count) = 0;
// scan the file starting at position for the signature
// signature can't have zero bytes
STDMETHOD(Scan)( unsigned long long *position,
unsigned int signature) = 0;
};
[uuid("A237C873-C6AD-422E-90DB-7CB4627DCFD9")]
interface IMMStreamOpen : public IUnknown {
STDMETHOD(Open)(LPCWSTR name) = 0;
};
[uuid("D8FF7213-6E09-4256-A2E5-5872C798B128")]
interface IMMFrame : public IMediaSample2 {
// track number must be the same as returned by
// IMMContainer->EnumTracks() iterator
STDMETHOD_(unsigned, GetTrack)() = 0;
STDMETHOD(SetTrack)(unsigned) = 0;
STDMETHOD_(unsigned, GetPre)() = 0;
STDMETHOD(SetPre)(unsigned) = 0;
};
[uuid("B8324E2A-21A9-46A1-8922-70C55D06311A")]
interface IMMErrorInfo : public IUnknown {
STDMETHOD(LogError)(BSTR message) = 0; // message is owned by the caller
STDMETHOD(LogWarning)(BSTR message) = 0;
};
[uuid("C7120EDB-528C-4ebe-BB53-DA8E70E618EE")]
interface IMemAlloc : public IUnknown {
STDMETHOD(GetBuffer)(HANDLE hAbortEvt, DWORD size, IMMFrame **pS) = 0;
};
// container itself should support IPropertyBag and return
// at least Duration[UI8] (in ns) property
// if a containter supports multiple segments in the same
// physical file it should return SegmentTop[UI8] property
// that return the offset of the first byte after this
// segment's end
[uuid("A369001B-F292-45f7-A942-84F9C8C0718A")]
interface IMMContainer : public IUnknown {
STDMETHOD(Open)( IMMStream *stream,
unsigned long long position,
IMMErrorInfo *einfo,
IMemAlloc *alloc) = 0;
STDMETHOD(GetProgress)(unsigned long long *cur,unsigned long long *max) = 0;
STDMETHOD(AbortOpen)() = 0;
// pu->Next() returns objects supporting IPropertyBag interface
STDMETHOD(EnumTracks)(IEnumUnknown **pu) = 0;
// pu->Next() returns objects supporting IProperyBag and IEnumUnknown interfaces
STDMETHOD(EnumEditions)(IEnumUnknown **pu) = 0;
// pu->Next() returns objects supporting IProperyBag and IMMStream interfaces
STDMETHOD(EnumAttachments)(IEnumUnknown **pu) = 0;
// S_FALSE is end of stream, S_OK next valid frame returned, E_ABORT wait aborted
STDMETHOD(ReadFrame)(HANDLE hAbortEvt, IMMFrame **frame) = 0;
// seeking
STDMETHOD(Seek)(unsigned long long timecode,unsigned flags) = 0;
};
/* FIXME: duplicated in matroska parser
enum { // Track type
TT_VIDEO = 1,
TT_AUDIO = 2,
TT_SUBS = 17,
TT_INTERLEAVED = 0x10001,
};
*/
enum { // Seek flags
MMSF_PREV_KF = 1,
MMSF_NEXT_KF = 2
};
/* Track properties [IPropertyBag from EnumTracks->Next()]
Name Type Optional
DefaultDuration UI8 Yes in ns
Video.Interlaced BOOL Yes
Video.DisplayWidth UI4 Yes
Video.DisplayHeight UI4 Yes
Video.PixelWidth UI4 No
Video.PixelHeight UI4 No
CodecID BSTR No
Type UI4 No TT_* enumeration
CodecPrivate ARRAY|UI1 Yes
Audio.Channels UI4 No
Audio.BitDepth UI4 Yes
Audio.SamplingFreq UI4 No
Audio.OutputSamplingFreq UI4 Yes
Language BSTR Yes
Name BSTR Yes
FOURCC UI4 Yes
*/
#endif