2002-07-09 16:24:59 +04:00
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/*******************************************************************************
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/
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/ File: ParameterWeb.h
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/
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/ Description: A BParameterWeb is a description of media controls within a BControllable
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/ Media Kit Node.
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/ BParameter, BParameterGroup, BContinuousParameter, BDiscreteParameter and
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/ BNullParameter are "data classes" used to describe the relation within a
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/ BParameterWeb. These are NOT direct visible classes like BControls; just data
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/ containers which applications can use to decide what kind of views to create.
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/
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/ Copyright 1997-98, Be Incorporated, All Rights Reserved
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/
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*******************************************************************************/
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#if !defined(_CONTROL_WEB_H)
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#define _CONTROL_WEB_H
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#include <MediaDefs.h>
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#include <Flattenable.h>
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#include <MediaNode.h>
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#if !defined(_PR3_COMPATIBLE_)
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enum {
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B_MEDIA_PARAMETER_TYPE = 'BMCT',
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B_MEDIA_PARAMETER_WEB_TYPE = 'BMCW',
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B_MEDIA_PARAMETER_GROUP_TYPE= 'BMCG'
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};
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#endif
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// It is highly unfortunate that a linker bug forces these symbols out
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// from the BParameter class. Hope they don't collide with anything else.
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/* These are control KINDs */
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/* kind used when you don't know or care */
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extern _IMPEXP_MEDIA const char * const B_GENERIC;
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/* kinds used for sliders */
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extern _IMPEXP_MEDIA const char * const B_MASTER_GAIN; /* Main Volume */
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extern _IMPEXP_MEDIA const char * const B_GAIN;
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extern _IMPEXP_MEDIA const char * const B_BALANCE;
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extern _IMPEXP_MEDIA const char * const B_FREQUENCY; /* like a radio tuner */
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extern _IMPEXP_MEDIA const char * const B_LEVEL; /* like for effects */
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extern _IMPEXP_MEDIA const char * const B_SHUTTLE_SPEED; /* Play, SloMo, Scan 1.0 == regular */
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extern _IMPEXP_MEDIA const char * const B_CROSSFADE; /* 0 == first input, +100 == second input */
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extern _IMPEXP_MEDIA const char * const B_EQUALIZATION; /* depth (dB) */
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/* kinds used for compressors */
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extern _IMPEXP_MEDIA const char * const B_COMPRESSION; /* 0% == no compression, 99% == 100:1 compression */
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extern _IMPEXP_MEDIA const char * const B_QUALITY; /* 0% == full compression, 100% == no compression */
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extern _IMPEXP_MEDIA const char * const B_BITRATE; /* in bits/second */
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extern _IMPEXP_MEDIA const char * const B_GOP_SIZE; /* Group Of Pictures. a k a "Keyframe every N frames" */
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/* kinds used for selectors */
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extern _IMPEXP_MEDIA const char * const B_MUTE; /* 0 == thru, 1 == mute */
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extern _IMPEXP_MEDIA const char * const B_ENABLE; /* 0 == disable, 1 == enable */
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extern _IMPEXP_MEDIA const char * const B_INPUT_MUX; /* "value" 1-N == input selected */
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extern _IMPEXP_MEDIA const char * const B_OUTPUT_MUX; /* "value" 1-N == output selected */
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extern _IMPEXP_MEDIA const char * const B_TUNER_CHANNEL; /* like cable TV */
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extern _IMPEXP_MEDIA const char * const B_TRACK; /* like a CD player; "value" should be 1-N */
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extern _IMPEXP_MEDIA const char * const B_RECSTATE; /* like mutitrack tape deck, 0 == silent, 1 == play, 2 == record */
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extern _IMPEXP_MEDIA const char * const B_SHUTTLE_MODE; /* -1 == backwards, 0 == stop, 1 == play, 2 == pause/cue */
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extern _IMPEXP_MEDIA const char * const B_RESOLUTION;
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extern _IMPEXP_MEDIA const char * const B_COLOR_SPACE; /* "value" should be color_space */
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extern _IMPEXP_MEDIA const char * const B_FRAME_RATE;
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extern _IMPEXP_MEDIA const char * const B_VIDEO_FORMAT; /* 1 == NTSC-M, 2 == NTSC-J, 3 == PAL-BDGHI, 4 == PAL-M, 5 == PAL-N, 6 == SECAM, 7 == MPEG-1, 8 == MPEG-2 */
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/* kinds used for junctions */
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// the prefix of "WEB" is to avoid collission with an enum in Defs.h
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extern _IMPEXP_MEDIA const char * const B_WEB_PHYSICAL_INPUT; /* a jack on the back of the card */
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extern _IMPEXP_MEDIA const char * const B_WEB_PHYSICAL_OUTPUT;
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extern _IMPEXP_MEDIA const char * const B_WEB_ADC_CONVERTER; /* from analog to digital signals */
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extern _IMPEXP_MEDIA const char * const B_WEB_DAC_CONVERTER; /* from digital to analog signals */
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extern _IMPEXP_MEDIA const char * const B_WEB_LOGICAL_INPUT; /* an "input" that may not be physical */
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extern _IMPEXP_MEDIA const char * const B_WEB_LOGICAL_OUTPUT;
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extern _IMPEXP_MEDIA const char * const B_WEB_LOGICAL_BUS; /* a logical connection point that is neither input nor output; auxilliary bus */
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extern _IMPEXP_MEDIA const char * const B_WEB_BUFFER_INPUT; /* an input that corresponds to a media_input */
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extern _IMPEXP_MEDIA const char * const B_WEB_BUFFER_OUTPUT;
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// a simple transport control is a discrete parameter with five values (states):
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// rewinding, stopped, playing, paused, and fast-forwarding
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extern _IMPEXP_MEDIA const char * const B_SIMPLE_TRANSPORT;
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class BList;
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class BParameterGroup;
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class BParameter;
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class BNullParameter;
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class BContinuousParameter;
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class BDiscreteParameter;
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2007-02-17 02:40:49 +03:00
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class BTextParameter;
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2002-07-09 16:24:59 +04:00
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/* Set these flags on parameters and groups to control how a Theme will */
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/* render the Web. Hidden means, generally, "don't show". Advanced means, */
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/* generally, that you can show it or not depending on your whim. */
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enum media_parameter_flags {
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B_HIDDEN_PARAMETER = 0x1,
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B_ADVANCED_PARAMETER = 0x2
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};
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class BParameterWeb :
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public BFlattenable
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{
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public:
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BParameterWeb();
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~BParameterWeb();
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media_node Node();
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BParameterGroup * MakeGroup(
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const char * name);
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int32 CountGroups();
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BParameterGroup * GroupAt(
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int32 index);
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int32 CountParameters();
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BParameter * ParameterAt(
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int32 index);
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virtual bool IsFixedSize() const;
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virtual type_code TypeCode() const;
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virtual ssize_t FlattenedSize() const;
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virtual status_t Flatten(void *buffer, ssize_t size) const;
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virtual bool AllowsTypeCode(type_code code) const;
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virtual status_t Unflatten(type_code c, const void *buf, ssize_t size);
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private:
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friend class BParameterGroup;
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friend class BControllable;
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BParameterWeb(
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const BParameterWeb & clone);
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BParameterWeb & operator=(
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const BParameterWeb & clone);
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/* Mmmh, stuffing! */
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virtual status_t _Reserved_ControlWeb_0(void *);
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virtual status_t _Reserved_ControlWeb_1(void *);
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virtual status_t _Reserved_ControlWeb_2(void *);
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virtual status_t _Reserved_ControlWeb_3(void *);
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virtual status_t _Reserved_ControlWeb_4(void *);
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virtual status_t _Reserved_ControlWeb_5(void *);
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virtual status_t _Reserved_ControlWeb_6(void *);
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virtual status_t _Reserved_ControlWeb_7(void *);
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BList * mGroups;
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media_node mNode;
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uint32 _reserved_control_web_[8];
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BList * mOldRefs;
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BList * mNewRefs;
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void AddRefFix(
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void * oldItem,
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void * newItem);
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};
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class BParameterGroup :
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public BFlattenable
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{
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private:
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BParameterGroup(
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BParameterWeb * web,
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const char * name);
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virtual ~BParameterGroup();
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public:
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BParameterWeb * Web() const;
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const char * Name() const;
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void SetFlags(uint32 flags);
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uint32 Flags() const;
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BNullParameter * MakeNullParameter(
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int32 id,
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media_type m_type,
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const char * name,
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const char * kind);
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BContinuousParameter * MakeContinuousParameter(
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int32 id,
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media_type m_type,
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const char * name,
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const char * kind,
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const char * unit,
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float minimum,
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float maximum,
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float stepping);
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BDiscreteParameter * MakeDiscreteParameter(
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int32 id,
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media_type m_type,
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const char * name,
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const char * kind);
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2007-02-17 02:40:49 +03:00
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BTextParameter * MakeTextParameter(
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int32 id,
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media_type m_type,
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const char * name,
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const char * kind,
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size_t max_bytes);
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2002-07-09 16:24:59 +04:00
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BParameterGroup * MakeGroup(
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const char * name);
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int32 CountParameters();
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BParameter * ParameterAt(
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int32 index);
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int32 CountGroups();
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BParameterGroup * GroupAt(
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int32 index);
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virtual bool IsFixedSize() const;
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virtual type_code TypeCode() const;
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virtual ssize_t FlattenedSize() const;
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virtual status_t Flatten(void *buffer, ssize_t size) const;
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virtual bool AllowsTypeCode(type_code code) const;
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virtual status_t Unflatten(type_code c, const void *buf, ssize_t size);
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private:
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BParameterGroup(); /* private unimplemented */
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BParameterGroup(
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const BParameterGroup & clone);
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BParameterGroup & operator=(
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const BParameterGroup & clone);
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/* Mmmh, stuffing! */
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virtual status_t _Reserved_ControlGroup_0(void *);
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virtual status_t _Reserved_ControlGroup_1(void *);
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virtual status_t _Reserved_ControlGroup_2(void *);
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virtual status_t _Reserved_ControlGroup_3(void *);
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virtual status_t _Reserved_ControlGroup_4(void *);
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virtual status_t _Reserved_ControlGroup_5(void *);
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virtual status_t _Reserved_ControlGroup_6(void *);
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virtual status_t _Reserved_ControlGroup_7(void *);
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friend class BParameterWeb;
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BParameterWeb * mWeb;
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BList * mControls;
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BList * mGroups;
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char * mName;
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uint32 mFlags;
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uint32 _reserved_control_group_[7];
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BParameter * MakeControl(
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int32 type);
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};
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/* After you create a BParameter, hook it up by calling AddInput() and/or AddOutput() */
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/* (which will call the reciprocal in the target) and optionally call SetChannelCount() and SetMediaType() */
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class BParameter :
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public BFlattenable
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{
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public:
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/* This is a parameter TYPE */
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enum media_parameter_type
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{
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B_NULL_PARAMETER,
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B_DISCRETE_PARAMETER,
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B_CONTINUOUS_PARAMETER,
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B_TEXT_PARAMETER
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2002-07-09 16:24:59 +04:00
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};
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media_parameter_type Type() const;
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BParameterWeb * Web() const;
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BParameterGroup * Group() const;
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const char * Name() const;
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const char * Kind() const;
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const char * Unit() const;
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int32 ID() const;
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void SetFlags(uint32 flags);
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uint32 Flags() const;
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virtual type_code ValueType() = 0;
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/* These functions are typically used by client apps; they will result in */
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/* your BControllable getting called to read/write values. */
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status_t GetValue(
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void * buffer,
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size_t * ioSize,
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bigtime_t * when);
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status_t SetValue(
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const void * buffer,
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size_t size,
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bigtime_t when);
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int32 CountChannels(); /* Number of ValueType() values; default is 1 */
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void SetChannelCount( /* One value could still control e g a stereo pair */
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int32 channel_count);
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media_type MediaType(); /* Optional (default is B_MEDIA_NO_TYPE) */
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void SetMediaType(media_type m_type);
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int32 CountInputs();
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BParameter * InputAt(
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int32 index);
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void AddInput(
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BParameter * input);
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int32 CountOutputs();
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BParameter * OutputAt(
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int32 index);
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void AddOutput(
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BParameter * output);
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virtual bool IsFixedSize() const;
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virtual type_code TypeCode() const;
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virtual ssize_t FlattenedSize() const;
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virtual status_t Flatten(void *buffer, ssize_t size) const;
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virtual bool AllowsTypeCode(type_code code) const;
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virtual status_t Unflatten(type_code c, const void *buf, ssize_t size);
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private:
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friend class BNullParameter;
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friend class BContinuousParameter;
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friend class BDiscreteParameter;
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friend class BTextParameter;
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2002-07-09 16:24:59 +04:00
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friend class BParameterGroup;
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friend class BParameterWeb;
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bool SwapOnUnflatten() { return mSwapDetected; }
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/* Mmmh, stuffing! */
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virtual status_t _Reserved_Control_0(void *);
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virtual status_t _Reserved_Control_1(void *);
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virtual status_t _Reserved_Control_2(void *);
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virtual status_t _Reserved_Control_3(void *);
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virtual status_t _Reserved_Control_4(void *);
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virtual status_t _Reserved_Control_5(void *);
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virtual status_t _Reserved_Control_6(void *);
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virtual status_t _Reserved_Control_7(void *);
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BParameter(
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int32 id,
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media_type m_type,
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media_parameter_type type,
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BParameterWeb * web,
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const char * name,
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const char * kind,
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const char * unit);
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~BParameter();
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int32 mID;
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media_parameter_type mType;
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BParameterWeb * mWeb;
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BParameterGroup * mGroup;
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char * mName;
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char * mKind;
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char * mUnit;
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BList * mInputs;
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BList * mOutputs;
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bool mSwapDetected;
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media_type mMediaType;
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int32 mChannels;
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|
uint32 mFlags;
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|
|
uint32 _reserved_control_[7];
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|
|
virtual void FixRefs(
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|
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BList & old,
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|
BList & updated);
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|
};
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|
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class BContinuousParameter :
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|
public BParameter
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|
{
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public:
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virtual type_code ValueType();
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float MinValue();
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float MaxValue();
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|
|
float ValueStep();
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|
|
/* The "response" specifies what value to display to the user. */
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/* Thus, if response is B_POLYNOMIAL with factor 2, an actual */
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/* control value of 10 would be displayed to the user as 100, and */
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/* if response was B_EXPONENTIAL and factor was 2, an actual */
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/* value of 3 would display 8 (two to the third). The ValueStep() */
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/* is given in actual control values, before the transformation for */
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/* display is done. Thus, with min 0, max 4 and value step 1, and an */
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/* exponential response with factor 10, you will get the displayed */
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/* values 1, 10, 100, 1000 and 10000 equally spaced across a slider */
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/* (or whatever UI the app puts to the parameter). */
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/* The "offset" is added to the value after transformation, before display. */
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/* If "resp" is negative, the resulting value/display relation is turned upside down. */
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enum response {
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B_UNKNOWN = 0,
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B_LINEAR = 1, /* factor is direct multiplier >= 0 */
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|
B_POLYNOMIAL, /* factor should be power; typically "2" for squared or "-1" for inverse */
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B_EXPONENTIAL, /* factor should be base, typically 2 or 10 */
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B_LOGARITHMIC /* factor should be base, typically 2 or 10 */
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};
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void SetResponse(
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|
|
int resp,
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|
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float factor,
|
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|
|
float offset);
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|
void GetResponse(
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|
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int * resp,
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|
|
float * factor,
|
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|
|
float * offset);
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|
virtual ssize_t FlattenedSize() const;
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|
|
virtual status_t Flatten(void *buffer, ssize_t size) const;
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|
|
virtual status_t Unflatten(type_code c, const void *buf, ssize_t size);
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|
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private:
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/* Mmmh, stuffing! */
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|
|
virtual status_t _Reserved_ContinuousParameter_0(void *);
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virtual status_t _Reserved_ContinuousParameter_1(void *);
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virtual status_t _Reserved_ContinuousParameter_2(void *);
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|
virtual status_t _Reserved_ContinuousParameter_3(void *);
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|
virtual status_t _Reserved_ContinuousParameter_4(void *);
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|
virtual status_t _Reserved_ContinuousParameter_5(void *);
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|
virtual status_t _Reserved_ContinuousParameter_6(void *);
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|
virtual status_t _Reserved_ContinuousParameter_7(void *);
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|
|
friend class BParameterGroup;
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|
|
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|
|
BContinuousParameter(
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|
|
int32 id,
|
|
|
|
media_type m_type,
|
|
|
|
BParameterWeb * web,
|
|
|
|
const char * name,
|
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|
|
const char * kind,
|
|
|
|
const char * unit,
|
|
|
|
float minimum,
|
|
|
|
float maximum,
|
|
|
|
float stepping);
|
|
|
|
~BContinuousParameter();
|
|
|
|
|
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|
|
float mMinimum;
|
|
|
|
float mMaximum;
|
|
|
|
float mStepping;
|
|
|
|
response mResponse;
|
|
|
|
float mFactor;
|
|
|
|
float mOffset;
|
|
|
|
uint32 _reserved_control_slider_[8];
|
|
|
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
class BDiscreteParameter :
|
|
|
|
public BParameter
|
|
|
|
{
|
|
|
|
public:
|
|
|
|
|
|
|
|
virtual type_code ValueType();
|
|
|
|
|
|
|
|
int32 CountItems();
|
|
|
|
const char * ItemNameAt(
|
|
|
|
int32 index);
|
|
|
|
int32 ItemValueAt(
|
|
|
|
int32 index);
|
|
|
|
status_t AddItem(
|
|
|
|
int32 value,
|
|
|
|
const char * name);
|
|
|
|
status_t MakeItemsFromInputs();
|
|
|
|
status_t MakeItemsFromOutputs();
|
|
|
|
void MakeEmpty();
|
|
|
|
|
|
|
|
virtual ssize_t FlattenedSize() const;
|
|
|
|
virtual status_t Flatten(void *buffer, ssize_t size) const;
|
|
|
|
virtual status_t Unflatten(type_code c, const void *buf, ssize_t size);
|
|
|
|
|
|
|
|
private:
|
|
|
|
/* Mmmh, stuffing! */
|
|
|
|
virtual status_t _Reserved_DiscreteParameter_0(void *);
|
|
|
|
virtual status_t _Reserved_DiscreteParameter_1(void *);
|
|
|
|
virtual status_t _Reserved_DiscreteParameter_2(void *);
|
|
|
|
virtual status_t _Reserved_DiscreteParameter_3(void *);
|
|
|
|
virtual status_t _Reserved_DiscreteParameter_4(void *);
|
|
|
|
virtual status_t _Reserved_DiscreteParameter_5(void *);
|
|
|
|
virtual status_t _Reserved_DiscreteParameter_6(void *);
|
|
|
|
virtual status_t _Reserved_DiscreteParameter_7(void *);
|
|
|
|
|
|
|
|
friend class BParameterGroup;
|
|
|
|
|
|
|
|
BList * mSelections;
|
|
|
|
BList * mValues;
|
|
|
|
uint32 _reserved_control_selector_[8];
|
|
|
|
|
|
|
|
BDiscreteParameter(
|
|
|
|
int32 id,
|
|
|
|
media_type m_type,
|
|
|
|
BParameterWeb * web,
|
|
|
|
const char * name,
|
|
|
|
const char * kind);
|
|
|
|
~BDiscreteParameter();
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
class BNullParameter :
|
|
|
|
public BParameter
|
|
|
|
{
|
|
|
|
public:
|
|
|
|
|
|
|
|
virtual type_code ValueType();
|
|
|
|
|
|
|
|
virtual ssize_t FlattenedSize() const;
|
|
|
|
virtual status_t Flatten(void *buffer, ssize_t size) const;
|
|
|
|
virtual status_t Unflatten(type_code c, const void *buf, ssize_t size);
|
|
|
|
|
|
|
|
private:
|
|
|
|
/* Mmmh, stuffing! */
|
|
|
|
virtual status_t _Reserved_NullParameter_0(void *);
|
|
|
|
virtual status_t _Reserved_NullParameter_1(void *);
|
|
|
|
virtual status_t _Reserved_NullParameter_2(void *);
|
|
|
|
virtual status_t _Reserved_NullParameter_3(void *);
|
|
|
|
virtual status_t _Reserved_NullParameter_4(void *);
|
|
|
|
virtual status_t _Reserved_NullParameter_5(void *);
|
|
|
|
virtual status_t _Reserved_NullParameter_6(void *);
|
|
|
|
virtual status_t _Reserved_NullParameter_7(void *);
|
|
|
|
|
|
|
|
friend class BParameterGroup;
|
|
|
|
|
|
|
|
uint32 _reserved_control_junction_[8];
|
|
|
|
|
|
|
|
BNullParameter(
|
|
|
|
int32 id,
|
|
|
|
media_type m_type,
|
|
|
|
BParameterWeb * web,
|
|
|
|
const char * name,
|
|
|
|
const char * kind);
|
|
|
|
~BNullParameter();
|
|
|
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
2007-02-17 02:40:49 +03:00
|
|
|
class BTextParameter :
|
|
|
|
public BParameter
|
|
|
|
{
|
|
|
|
public:
|
|
|
|
|
|
|
|
size_t MaxBytes() const;
|
|
|
|
virtual type_code ValueType();
|
|
|
|
|
|
|
|
virtual ssize_t FlattenedSize() const;
|
|
|
|
virtual status_t Flatten(void *buffer, ssize_t size) const;
|
|
|
|
virtual status_t Unflatten(type_code c, const void *buf, ssize_t size);
|
|
|
|
|
|
|
|
private:
|
|
|
|
/* Mmmh, stuffing! */
|
|
|
|
virtual status_t _Reserved_TextParameter_0(void *);
|
|
|
|
virtual status_t _Reserved_TextParameter_1(void *);
|
|
|
|
virtual status_t _Reserved_TextParameter_2(void *);
|
|
|
|
virtual status_t _Reserved_TextParameter_3(void *);
|
|
|
|
virtual status_t _Reserved_TextParameter_4(void *);
|
|
|
|
virtual status_t _Reserved_TextParameter_5(void *);
|
|
|
|
virtual status_t _Reserved_TextParameter_6(void *);
|
|
|
|
virtual status_t _Reserved_TextParameter_7(void *);
|
|
|
|
|
|
|
|
friend class BParameterGroup;
|
|
|
|
|
|
|
|
uint32 mMaxBytes;
|
|
|
|
uint32 _reserved_control_junction_[8];
|
|
|
|
|
|
|
|
BTextParameter(
|
|
|
|
int32 id,
|
|
|
|
media_type m_type,
|
|
|
|
BParameterWeb * web,
|
|
|
|
const char * name,
|
|
|
|
const char * kind,
|
|
|
|
size_t max_bytes);
|
|
|
|
~BTextParameter();
|
|
|
|
|
|
|
|
};
|
|
|
|
|
2002-07-09 16:24:59 +04:00
|
|
|
#endif /* _CONTROL_WEB_H */
|