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re3/sdk/dx8sdk/Include/DShowIDL/medparam.idl
2020-08-02 19:36:50 +03:00

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//------------------------------------------------------------------------------
// File: MedParam.idl
//
// Desc: Definition of the IMediaParams and associated interfaces. These
// interfaces are designed to allow communication of curve-following
// behaviors for parameters of objects which require dynamic changes
// to their parameters at run time. All changes are specified by
// timestamp and curve type to ensure the parameters can be set
// at sufficient accuracy with predictable behavior on subsequent
// playback of the same curves.
//
// Copyright (c) 1999 - 2002, Microsoft Corporation. All rights reserved.
//------------------------------------------------------------------------------
import "oaidl.idl";
import "ocidl.idl";
import "strmif.idl";
//------------------------------------------------------------------------------
// Define the semantic type to be used for each parameter. All values passed
// into this interface are 32-bit floats, but the interface can specify that
// the values must be integer, booleans, or enumerated types
//------------------------------------------------------------------------------
typedef float MP_DATA; // All data is 32-bit floats
typedef enum _MP_Type {
MPT_INT, // data is signed 23 bit integer (mantissa)
MPT_FLOAT, // data is 32bit IEEE float
MPT_BOOL, // data is true or false (using ANSI C++ definition)
MPT_ENUM, // data is a set (represented by consecutive integers)
MPT_MAX,
} MP_TYPE;
const MP_DATA MPBOOL_TRUE = 1.0; // Value of true
const MP_DATA MPBOOL_FALSE = 0.0; // Value of false
//------------------------------------------------------------------------------
// Define the types of curves which are supported
//------------------------------------------------------------------------------
typedef enum _MP_CURVE_TYPE {
MP_CURVE_JUMP = 0x0001, // No interpolation, just jump to next point
MP_CURVE_LINEAR = 0x0002, // Linear interpolation (y follows x from 0.0 to 1.0)
MP_CURVE_SQUARE = 0x0004, // y follow x^2 from 0.0 to 1.0
MP_CURVE_INVSQUARE = 0x0008, // y follows 1-(x^2) from 0.0 to 1.0
MP_CURVE_SINE = 0x0010, // y follows sin(x) from -pi/2 to pi/2
} MP_CURVE_TYPE;
//------------------------------------------------------------------------------
// Capability bits. Used by the object to specify what capabilities it has.
//------------------------------------------------------------------------------
typedef DWORD MP_CAPS;
// Curve capabilities - If the cap bit is set, that type of curve is supported
const MP_CAPS MP_CAPS_CURVE_JUMP = MP_CURVE_JUMP;
const MP_CAPS MP_CAPS_CURVE_LINEAR = MP_CURVE_LINEAR;
const MP_CAPS MP_CAPS_CURVE_SQUARE = MP_CURVE_SQUARE;
const MP_CAPS MP_CAPS_CURVE_INVSQUARE = MP_CURVE_INVSQUARE;
const MP_CAPS MP_CAPS_CURVE_SINE = MP_CURVE_SINE;
//------------------------------------------------------------------------------
// Structure used to return information about the type and limits of a parameter
//------------------------------------------------------------------------------
typedef struct _MP_PARAMINFO {
MP_TYPE mpType; // One of MP_TYPE_xxx codes
MP_CAPS mopCaps; // A collection of MP_CAPS flags
// Minimum and maximum values
MP_DATA mpdMinValue; // minimum legal value
MP_DATA mpdMaxValue; // maximum legal value
MP_DATA mpdNeutralValue; // default or 'center' value
// Defualt Unit and Label text. These strings will ALWAYS be English
// strings in the UNICODE character set. For international text
// use the GetParamText member function
WCHAR szUnitText[32]; // units of the parameter
WCHAR szLabel[32]; // name of the parameter
} MP_PARAMINFO;
//------------------------------------------------------------------------------
// Parameter Index types
//------------------------------------------------------------------------------
typedef DWORD DWORD;
const DWORD DWORD_ALLPARAMS = -1; // Apply this operation to all params
//------------------------------------------------------------------------------
// Defined list of timestamp types
//------------------------------------------------------------------------------
typedef DWORD MP_TIMEDATA; // Extra data to further define type
// REFERENCE_TIME (1 tick = 100 nanoseconds, MP_TIMEDATA ignored)
cpp_quote("DEFINE_GUID(GUID_TIME_REFERENCE,")
cpp_quote("0x93ad712b, 0xdaa0, 0x4ffe, 0xbc, 0x81, 0xb0, 0xce, 0x50, 0xf, 0xcd, 0xd9);")
// Music Time (MP_TIMEDATA = parts/quarter note)
cpp_quote("DEFINE_GUID(GUID_TIME_MUSIC,")
cpp_quote("0x574c49d, 0x5b04, 0x4b15, 0xa5, 0x42, 0xae, 0x28, 0x20, 0x30, 0x11, 0x7b);")
// Time is measures in samples. MP_TIMEDATA = Samples/sec)
cpp_quote("DEFINE_GUID(GUID_TIME_SAMPLES,")
cpp_quote("0xa8593d05, 0xc43, 0x4984, 0x9a, 0x63, 0x97, 0xaf, 0x9e, 0x2, 0xc4, 0xc0);")
//------------------------------------------------------------------------------
// The value of a given parameter at a specific point in time
//------------------------------------------------------------------------------
typedef DWORD MP_FLAGS;
const MP_FLAGS MPF_ENVLP_STANDARD = 0x0000; // Use all data provided
const MP_FLAGS MPF_ENVLP_BEGIN_CURRENTVAL = 0x0001;
// Ignore valStart value, use current value as the staring point
const MP_FLAGS MPF_ENVLP_BEGIN_NEUTRALVAL = 0x0002;
// Ignore valStart value, use neutral value as the staring point
typedef struct _MP_ENVELOPE_SEGMENT {
REFERENCE_TIME rtStart; // Start time in current time format
REFERENCE_TIME rtEnd; // End time in current time format
MP_DATA valStart; // Initial Value
MP_DATA valEnd; // Final Value
MP_CURVE_TYPE iCurve; // One of MP_CURVE_TYPE codes
MP_FLAGS flags; // Special cases
} MP_ENVELOPE_SEGMENT;
//------------------------------------------------------------------------------
// Define flags for Punch-in timing
//------------------------------------------------------------------------------
const MP_FLAGS MPF_PUNCHIN_REFTIME = 0; // Use the reference time as the PI time
const MP_FLAGS MPF_PUNCHIN_NOW = 0x0001; // Punch in at the current clock time
const MP_FLAGS MPF_PUNCHIN_STOPPED = 0x0002; // Return change notifications during
// author time
//------------------------------------------------------------------------------
// IMediaParamInfo - Interface used to determine the names, data types and
// units of the parameters which are exposed by the object. This interface
// is used at discovery time, and is not required during run-time since the
// objects parameters are a fixed set and this data can be cached by the
// calling applicaiton.
//------------------------------------------------------------------------------
[
object,
uuid(6d6cbb60-a223-44aa-842f-a2f06750be6d),
version(1.0)
]
interface IMediaParamInfo : IUnknown
{
HRESULT GetParamCount (
[out] DWORD * pdwParams
);
HRESULT GetParamInfo (
[in] DWORD dwParamIndex,
[out] MP_PARAMINFO * pInfo
);
// returns a series of null terminated strings. strings are in the
// following order:
// Param Label, Units Text, 1st Enum Text, 2nd Enum Text, etc...
HRESULT GetParamText (
[in] DWORD dwParamIndex, // which param to get text for
[out] WCHAR **ppwchText // returns ptr to CoTaskMemAlloc'd string
);
// Returns the number of diffrent time formats this object understands
HRESULT GetNumTimeFormats (
[out] DWORD * pdwNumTimeFormats
);
// Returns the GUID for the ith supported time format
HRESULT GetSupportedTimeFormat(
[in] DWORD dwFormatIndex,
[out] GUID *pguidTimeFormat
);
// Returns the current time format
HRESULT GetCurrentTimeFormat (
[out] GUID *pguidTimeFormat,
[out] MP_TIMEDATA *pTimeData
);
}
//------------------------------------------------------------------------------
// IMediaParams - Interfaes used to actually set the media params and the
// envelopes to follow
//------------------------------------------------------------------------------
[
object,
uuid(6d6cbb61-a223-44aa-842f-a2f06750be6e),
version(1.0)
]
interface IMediaParams : IUnknown
{
// Single param Get/Set methods
HRESULT GetParam (
[in] DWORD dwParamIndex,
[out] MP_DATA *pValue
);
HRESULT SetParam (
[in] DWORD dwParamIndex,
[in] MP_DATA value
);
// Envelope methods (param change over time)
HRESULT AddEnvelope (
[in] DWORD dwParamIndex,
[in] DWORD cSegments,
[in] MP_ENVELOPE_SEGMENT * pEnvelopeSegments
);
// Flush all of the envelope information for the given paramter between
// the timestamps specified
HRESULT FlushEnvelope (
[in] DWORD dwParamIndex,
[in] REFERENCE_TIME refTimeStart,
[in] REFERENCE_TIME refTimeEnd
);
// Change the time format being used by the object
HRESULT SetTimeFormat (
[in] GUID guidTimeFormat,
[in] MP_TIMEDATA mpTimeData
);
}