hash stringlengths 32 32 | doc_id stringlengths 7 13 | section stringlengths 3 121 | content stringlengths 0 2.2M |
|---|---|---|---|
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 6.3.4 fAssetEncoding | |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 6.3.4.1 General | The fAssetEncoding field shall identify the format of data contained in the fAssetBytes field. Implementations SHALL support the coding schemes <PCM24> and <PCM32> as listed in Table 6.4. Table 6.4: Audio Encoding Constant URI Definition PCM24 <mdacore>/labels/essence-encoding/PCM24 Sequence of 24-bit PCM audio samples... |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 6.3.4.2 fAssetBytes | The fAssetBytes field SHALL contain a representation of the audio samples. A value of fAssetBytes.fCount equal to 0 shall be interpreted an all 0 (zero) array of audio samples with fAssetBytes.fCount equal to the Frame duration. |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 6.3.5 Frame End Packet | A FrameEndPacket signals the end of a Frame. Fragment 6.11: Fragment End Packet Structure aligned struct FrameEndPacket : PacketHeader { fKind = kFrameEndPacketKind; } ETSI ETSI TS 103 223 V1.1.1 (2015-04) 43 |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 6.3.6 Slice Header Packet | |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 6.3.6.1 General | A SliceHeaderPacket signals the start of a Slice. Fragment 6.12: Slice Header Packet Structure aligned struct SliceHeaderPacket : PacketHeader { fKind = kSliceHeaderPacketKind; unsigned int(16) fDuration; } |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 6.3.6.2 fDuration | The fDuration field SHALL be the duration (in samples) of the Slice. |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 6.3.7 Object Fragment Packet | |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 6.3.7.1 General | An ObjectFragmentPacket corresponds to an MDA::ObjectFragment instance. Fragment 6.13: Object Fragment Packet Structure aligned struct ObjectFragmentPacket : MonoSourceFragmentPacket { fKind = kObjectFragmentPacketKind; OptionalItem<Position> fPosition; OptionalItem<unsigned int(8)> fAperture; OptionalItem<unsigned int... |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 6.3.7.2 fPosition | The fPosition field SHALL be equal to MDA::ObjectFragment.position. |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 6.3.7.3 fAperture | The fAperture field SHALL be equal to MDA::ObjectFragment.aperture. The fAperture field is interpreted as fAperture*(180/255) in units of degrees. For implementations that use radians, the aperture value shall be interpreted as fAperture*(π/255). In compliance with Clause 4, the default value of fAperture SHALL be 0. |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 6.3.7.4 fDivergence | The fDivergence field SHALL be equal to MDA::ObjectFragment.divergence. The fDivergence field is interpreted as fDivergence*(180/255) in units of degrees. For implementations that use radians, the divergence value shall be interpreted as fDivergence*(π/255). In compliance with Clause 4, the default value of fDivergence... |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 6.3.7.5 fCoherent | The fCoherent field SHALL be equal to MDA::ObjectFragment.coherent. |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 6.3.7.6 fContentKind | The fContentKind field SHALL be equal to MDA::ObjectFragment.contentKind. Table 6.5 lists allowed values for fContentKind. ETSI ETSI TS 103 223 V1.1.1 (2015-04) 44 Table 6.5: Content Kind Local Labels Constant URI dialog <mdacore>/labels/content-kind/dialog effects <mdacore>/labels/content-kind/effects music <mdacore>/... |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 6.3.7.7 fRenderingExceptions | The fRenderingExceptions field SHALL be equal to MDA::ObjectFragment.renderingExceptions. |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 6.3.8 LFE Fragment Packet | An LFEFragmentPacket corresponds to an MDA::LFEFragment instance. Fragment 6.14: LFE Fragment Packet Syntax aligned struct LFEFragmentPacket : MonoSourceFragmentPacket { fKind = kLFEFragmentPacketKind; } |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 6.3.9 Group Start Packet | A GroupStartPacket signals the start of a Group structure. Fragment 6.15: GroupStartPacket Syntax aligned struct GroupStartPacket: EntityPacket { fKind = kGroupStartPacketKind; } |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 6.3.10 Group End Packet | A GroupEndPacket signals the end of a Group structure. Fragment 6.16: GroupEndPacket Syntax aligned struct GroupEndPacket : PacketHeader { fKind = kGroupEndPacketKind; } |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 6.3.11 SwitchStartPacket | A SwitchStartPacket indicates the start of a Switch structure. Fragment 6.17: SwitchStartPacket Syntax aligned struct SwitchStartPacket: EntityPacket { fKind = kSwitchStartPacketKind; } |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 6.3.12 SwitchEndPacket | A SwitchEndPacket indicates the end of a Switch structure. Fragment 6.18: SwitchEndPacket Syntax aligned struct SwitchEndPacket : PacketHeader { fKind = kSwitchEndPacketKind; } ETSI ETSI TS 103 223 V1.1.1 (2015-04) 45 |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 6.3.13 EntityPacket | |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 6.3.13.1 General | An EntityPacket corresponds to the MDA::Entity abstract class. Fragment 6.19: EntityPacket Syntax aligned abstract struct EntityPacket : PacketHeader { PackedUInt32 fId; OptionalItem<FixedArray<Extension>> fExtensions; } |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 6.3.13.2 fId | The fId field shall be equal to MDA::Entity.id. |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 6.3.13.3 fExtensions | Each item of fExtensions field SHALL correspond to an item of the MDA::Entity.extensions collection. The number of Extensions in an Entity SHALL be less than or equal to 232. |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 6.3.14 FragmentPacket | A FragmentPacket corresponds to the MDA::Fragment abstract class. The MDA::Fragment.offset and MDA::Fragment.duration properties SHALL be equal to the offset and duration, respectively, of the Bitstream Fragment to which the FragmentPacket belongs. Fragment 6.20: FragmentPacket Syntax aligned abstract struct FragmentPa... |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 6.3.15 MonoSourceFragmentPacket | |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 6.3.15.1 GeneraI | A MonoSourceFragmentPacket corresponds to the MDA::MonoSourceFragment abstract class. Fragment 6.21: MonoSourceFragmentPacket Syntax aligned abstract struct MonoSourceFragmentPacket : FragmentPacket { UTF8String fAssetURI; OptionalItem<unsigned int(16)> fAssetOffset; OptionalItem<unsigned int(5)> fGain; } |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 6.3.15.2 fAssetURI | The MDA::MonoSourceFragment.audioSamples.assetURI SHALL be equal to fassetURI. The fAssetURI field for Frame-internal assets SHALL be equal to "urn:x- mda:bitstream:afid:"+AssetFramePacket.fId.toString(), where fId is the fId value of the AssetFramePacket that contains the audio samples used by this MonoSourceFragmentP... |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 6.3.15.3 fAssetOffset | The MDA::MonoSourceFragment.audioSamples.assetOffset SHALL be equal to fAssetOffset. ETSI ETSI TS 103 223 V1.1.1 (2015-04) 46 |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 6.3.15.4 fGain | The fGain field SHALL be equal to MDA::MonoSourceFragment.gain. The interpretation of the fGain field is as (fGain-411)/4 in units of dB. In compliance with Clause 0 the default value of fGain SHALL be 411. Similarly, the value 0 SHALL be interpreted as -INFdB (negative infinity). |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 6.3.16 UnexpectedPacket | A UnexpectedPacket is a Packet with unspecified payload. Implementations SHALL accept UnexpectedPacket. Fragment 6.22: UnexpectedPacket Syntax aligned struct UnexpectedPacket : PacketHeader { unsigned int(8) fData[fLength]; } |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 6.4 Common Data Structures | |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 6.4.1 PacketHeader | @size(fLength.fValue) aligned struct PacketHeader { Label fKind; PackedLength fLength; // packet payload follows } A Packet encapsulates an "opaque" payload, with fKind and fLength denoting the kind and size of the payload, respectively. The fLength value does not include the fKind and fLength properties (see Annex A).... |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 6.4.2 ChannelGain | |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 6.4.2.1 General | struct ChannelGain { Label fChannel; unsigned int(8) fGain; } Some allowed values for fChannel are listed in Table 6.6. Table 6.6: Channel Labels URI Symbol urn:smpte:ul:060E2B34.0401010D.03020101.00000000 L urn:smpte:ul:060E2B34.0401010D.03020102.00000000 R urn:smpte:ul:060E2B34.0401010D.03020103.00000000 C urn:smpte:... |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 6.4.2.2 fGain | The fGain field SHALL be equal to MDA::ChannelGain.gain. The interpretation of the fGain field is as - fGain/4 in units of dB. In compliance with Clause 4.5.16, the default value of fGain is 0. |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 6.4.3 RenderingException | A ChannelRenderingException and PositionRenderingException correspond to a MDA::ChannelRenderingException and MDA::PositionRenderingException, respectively. // Channel Rendering Exception struct ChannelRenderingException { Label fTargetConfiguration; FixedArray<ChannelGain> fGains; } // Position Rendering Exception str... |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 6.4.4 Labels | struct Label { const unsigned int(3) kLocalKind = 0; const unsigned int(3) kURIKind = 1; unsigned int(1) fIsExtended; if (fIsExtended) { unsigned int(3) fKind; if (fKind == kURIKind) { UTF8String fURI; } else { unsigned int(4) fLength; unsigned int(8) fDigits[fLength + 1]; } } else { var fKind = kLocalKind; unsigned in... |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 6.4.5 PackedLength | typedef BERUInt32 PackedLength; The fLength fields of various MDA structures (e.g. PacketHeader and Extension) are encoded as BERUInt32 using the type alias PackedLength. |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 6.4.6 Extension | @size(fLength.fValue) struct Extension { Label fName; Packed fLength; // Payload follows } An Extension encapsulates an "opaque" payload, with fName and fLength denoting the kind and size of the payload, respectively. The fLength value does not include the fName and fLength properties. The interpretation (and processin... |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 6.4.7 FixedArray | template<class T> struct FixedArray { PackedLength fCount; T fItems[fCount]; } A FixedArray over T holds fCount items of type T. The value of fCount is stored as a PackedLength value, followed by fCount items of type T. Note that a FixedArray is not guaranteed to be byte aligned, but its members may be. |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 6.4.8 Position | |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 6.4.8.1 General | struct Position { OptionalItem<unsigned int(12)> fRadius; OptionalItem<unsigned int(12)> fAzimuth; OptionalItem<unsigned int(11)> fElevation; } |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 6.4.8.2 fRadius | The fRadius field ranges over [0,4095] and SHALL be interpreted as the rational number fRadius/2047. In the D-Cinema application the fRadius field SHALL be equal to its default value 2 047. |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 6.4.8.3 fAzimuth | The fAzimuth field ranges over [0,4095] and SHALL be interpreted as the rational number (fAzimuth- 2048)*(360/2048) in units of degrees. For implementations that use radians, the azimuth value is interpreted as (fAzimuth-2048)*(2*π/2048). In compliance with Clause 4.5.11.2, the default value of fAzimuth SHALL be 2 048 ... |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 6.4.8.4 fElevation | The fElevation field ranges over [0,2047] and shall be interpreted as the rational number (fElevation - 1023)*(90/1023) in units of circular degrees. For implementations that use radians, the elevation value is interpreted as (fElevation-1023)*(π/2046). The value 2 047 is reserved and SHALL NOT be used. ETSI ETSI TS 10... |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 6.4.9 ByteArray | typedef FixedArray<unsigned int(8)> ByteArray; A ByteArray holds a sequence of bytes. Note that a ByteArray is not byte aligned. |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 6.4.10 BERUInt32 | struct BERUInt32 { unsigned int(1) fExtended; if (fExtended) { unsigned int(5) fReserved; unsigned int(2) fLength; unsigned int((fLength + 1) << 3) fValue; } else { unsigned int(7) fValue; } } The BERUInt32 data structure encodes a 32-bit integer fValue. If fValue is smaller than 128, fValue is represented by a single ... |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 6.4.11 PackedUInt64 | struct PackedUInt64 { unsigned int(3) fLength; unsigned int((fLength + 1) << 3) fValue; } The fLength field is equal to the number of bytes minus one to encode fValue in Big Endian order. For the present document the fLength field SHALL be set equal to 7, corresponding to 8 bytes in Big Endian order to encode fValue. N... |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 6.4.12 PackedUInt32 | struct PackedUInt32 { unsigned int(2) fLength; unsigned int((fLength + 1) << 3) fValue; } The fLength field is equal to the number of bytes minus one to encode fValue in Big Endian order. For the present document the fLength field SHALL be set equal to 3, corresponding to 4 bytes in Big Endian order to encode fValue. N... |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 6.4.13 PackedUInt16 | struct PackedUInt16 { unsigned int(1) fLength; unsigned int((fLength + 1) << 3) fValue; } The fLength field is equal to the number of bytes minus one to encode fValue in Big Endian order. For the present document the fLength field SHALL be set equal to 1, corresponding to 2 bytes in Big Endian order to encode fValue. N... |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 6.4.14 OptionalItem | template<class T> struct OptionalItem { unsigned int(1) fPresent; if (fPresent) { T fValue; } } ETSI ETSI TS 103 223 V1.1.1 (2015-04) 50 When fPresent is true, the value of an optional item shall be fValue. When fPresent is false, the value of an optional item shall be t0 when a default value t0 for T is defined, and u... |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 6.4.15 UTF8String | typedef ByteArray UTF8String; The UTF8String data type holds UTF8 encoded character strings [i.1]. Note that an UTF8String is not guaranteed to be byte aligned within an MDA bitstream. |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 6.5 Constants | |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 6.5.1 Packet Kinds | Table 6.8: Packet Kinds const Label kFrameHeaderPacketKind = {1,0x00,0x01,{0x5A,0xA5}}; const Label kFrameEndPacketKind = {0,0x01}; const Label kFragmentHeaderPacketKind = {0,0x02}; const Label kObjectFragmentPacketKind = {0,0x03}; const Label kAssetFramePacketKind = {0,0x04}; const Label kGroupStartPacketKind = {0,0x0... |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 6.5.2 Bitstream Version | Table 6.9: Bitstream Version const Label kBitstreamVersion = {0,0x03}; |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 7 MDA Broadcast Extensions | |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 7.1 Summary | This clause specifies a broadcast extension the MDA core specification that is backwards compatible with the MDA core specification. The new elements in this extension documents fall in two categories: (i) broadcast specific entities and (ii) broadcast specific metadata. The former are new audible components within an ... |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 7.2 Higher Order Ambisonics | |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 7.2.1 General | This clause defines the HOAObjectFragment as a new broadcast specific entity. The HOAObjectFragment class introduces Higher Order Ambisonics (HOA) objects within an MDA stream. HOA objects are not rendered on the MDA reference renderer, but using an HOA renderer. No specific HOA renderer is required by the present docu... |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 7.2.2 HOAMonoFragment | |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 7.2.2.1 General | An HOAMonoFragment is a named waveform associated with an (Higher Order) Ambisonics sound representation. An HOAMonoFragment SHALL be rendered in the context of an HOAObjectFragment (Clause 7.2.3) and SHALL be ignored by the normative MDA VBAP renderer. Figure 7.1: HOAMonoSourceFragment |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 7.2.2.2 Semantics | |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 7.2.2.2.1 channelNumber | The channelNumber property is the ACN order n*(n+1)+m, where n and m, -n ≤ m ≤ n are the order and degree of the Ambisonics component of represented by the HOAMonoFragment [i.3]. If this property is absent, the normalizationType property (if present) SHALL be ignored, and any HOAObjectFragment that contains this HOAMon... |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 7.2.2.2.2 normalizationType | The optional normalizationType property states the normalization scheme for the Legendre functions Pnm defining the basis functions of Ambisonics decompositions. This property is ignored if the channelNumber property is absent. If absent, N3D normalization <N3D> SHALL be assumed [i.3]. The allowed values for normalizat... |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 7.2.3 HOAObjectFragment | |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 7.2.3.1 General | An HOAObjectFragment aggregates waveforms and metadata for rendering HOA sound fields. Figure 7.2: HOAObjectFragment |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 7.2.3.2 Semantics | |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 7.2.3.2.1 HOAOrder | The HOAOrder element indicates the order of the HOAObjectFragment. |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 7.2.3.2.2 adaptorMatrix | The adaptorMatrix property value is matrix that for converting its member waveforms (in their listed order) to the full component set of an Ambisonics sound field of order HOAOrder. This property MAY be absent when implied by the metadata of its HOAMonoFragment members [i.3]. ETSI ETSI TS 103 223 V1.1.1 (2015-04) 52 |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 7.2.3.2.3 Members | The members property lists the waveform components of the HOAObjectFragment. |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 7.3 Broadcast Extensions | |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 7.3.1 General | This clause defines the MDA broadcast extension set. Each such extension is an instance of the virtual class Extension. |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 7.3.2 BroadcastExtension | |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 7.3.2.1 General | A BroadcastExtension is an extensible data structure adding broadcast specific metadata to the core MDA specification. A Broadcast Extension is a virtual class and is the base of a number of concrete broadcast extension subclasses. The fName property of a Broadcast Extension shall be in the <bpxext> namespace. MDA Play... |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 7.3.3 Program Broadcast Extension | |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 7.3.3.1 General | A ProgramBroadcastExtension is a concrete subclass of the BroadcastExtension class and provides metadata for an MDA program. It SHALL be attached to the MDA Program Header for any MDA Program that contains broadcast extension elements. Reversely, the presence of a ProgramBroadcastExtension indicates that MDA Program co... |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 7.3.3.2 Semantics | |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 7.3.3.2.1 programComplexity | The programComplexity property lists global MDA Program properties that allow an MDA Player to quickly determine if it can render the MDA Program. The structure of ComplexityProfileType is defined in Clause 7.4.1. |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 7.3.3.2.2 programLoudness | The programLoudness property indicates the measured loudness of the MDA Program. The LoudnessProfileType is defined in Clause 7.4.2. BroadcastExtension Extension programComplexity[0..1]:4ComplexityProfileType programLoudness[*]4:4LoudnessProfileType targetLoudness[0..1]4:4LoudnessType programDRC[0..1]4:4DRCType Program... |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 7.3.3.2.3 targetLoudness | Target Loudness Level property indicates the set target Program loudness level of the Program the content creator or programmer wants to achieve once the Program or bitstream is rendered during playback. This metadata value can be used by a downstream loudness monitoring or normalization system as guidance of how much ... |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 7.3.3.2.4 programDRC | The programDRC property list specific DRC profiles for the MDA Program. The DRCType is defined in Clause MDA Reference Renderer. |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 7.3.3.3 Group Broadcast Extension | |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 7.3.3.3.1 General | The GroupBroadcastExtension property provides additional information on the semantics of an MDA Group construct. Figure 7.5: Group Extension |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 7.3.3.4 Semantics | |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 7.3.3.4.1 groupKind | The groupKind element indicates an interpretation of the elements of an MDA group. Potential values for this element are provided in Table 7.4. |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 7.3.3.4.2 groupKindParameters | The groupKindParameters element provides additional information associated with groupKind. The specifics of this element depend on the value of groupKind. |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 7.3.4 Entity Broadcast Extension | |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 7.3.4.1 General | Extensions to the Entity abstract class define extensions that apply to any concrete class derived from Entity. Figure 7.6: EntityBroadcastExtension ETSI ETSI TS 103 223 V1.1.1 (2015-04) 54 |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 7.3.4.2 Semantics | |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 7.3.4.2.1 entityLoudness | The entityLoudness property indicates the measured loudness of a concrete MDA Entity instance. The LoudnessType is defined in Clause 7.4.2. |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 7.3.5 ObjectFragment Broadcast Extension | |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 7.3.5.1 General | The ObjectFragmentBroadcastExtension class defines metadata pertaining to broadcast specific processing and rendering of ObjectFragment instances. Figure 7.7: ObjectFragment Broadcast Extension |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 7.3.5.2 Semantics | |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 7.3.5.2.1 Interactivity | The interactivity element indicates which core metadata elements in the ObjectFragment is authored for interactivity and MAY be modified by subsequent processing or rendering and how. The InteractivityType data type is defined in Clause 7.4.6. A compliant MDA processor/renderer SHOULD not modify any core metadata that ... |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 7.3.5.2.2 Lock | The lock element indicates whether or not the object under consideration is available for processing and/or rendering. An MDA compliant processor or player SHOULD not attempt process a locked object when it is does not have the appropriate unlock key: processing or playing a locked object will give unpredictable result... |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 7.3.5.2.3 priority | The priority property indicates the priority for various components in an MDA Program stream and may be used to guide down stream processing decisions. For example, as an MDA Programs goes through a distribution chain, it may encounter scenarios where a reduction of objects in the program needs to occur (e.g. to meet c... |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 7.3.5.2.4 snap | The snap property, if present, states that as a post-processing phase after VBAP rendering, the largest gain value larger than then the value of snap SHALL be set to 1 and all other gain values SHALL be set to 0. Effectively, the object is snapped to the nearest speaker if the object is (spatially) close enough (as det... |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 7.3.5.2.5 dialogFraction | The dialogFraction property, if present, states the fraction of the audio essence considered to be of dialog kind. The dialogFraction ranges from 0 to 1 in increments of 1/127. A value of 0 corresponds to a Fragment without dialog, whereas a value of 1 correspond a Fragment that is pure dialog. The value of this proper... |
f952cb359110469a2c2e9d21522d74c4 | 103 223 | 7.4 Data Types |
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