LONG_SECTION structure (mpeg2structs.h)
The LONG_SECTION structure represents a long MPEG-2 section header. If a section contains a long header, you can cast a SECTION pointer to a LONG_SECTION pointer. For more information, see the Remarks section in the SECTION reference.
Syntax
typedef struct __MIDL___MIDL_itf_mpeg2structs_0000_0000_0008 {
TID TableId;
union {
MPEG_HEADER_BITS_MIDL S;
WORD W;
} Header;
TEID TableIdExtension;
union {
MPEG_HEADER_VERSION_BITS_MIDL S;
BYTE B;
} Version;
BYTE SectionNumber;
BYTE LastSectionNumber;
BYTE RemainingData[1];
} LONG_SECTION, *PLONG_SECTION;
Members
TableId
Specifies the table identifier (TID) of the section.
Header
A union that contains the following members.
Header.S
Contains packed header bits, as an MPEG_HEADER_BITS_MIDL structure. Applications should use the Header.W field instead.
Header.W
Contains the header bits as a WORD type. To get the individual bitfields, coerce this member to an MPEG_HEADER_BITS structure.
TableIdExtension
Specifies the table_id_extension field.
Version
A union that contains the following members.
Version.S
Contains the version number and current/next indicator bit as an MPEG_HEADER_VERSION_BITS_MIDL structure. Applications should use the Version.B field instead.
Version.B
Contains the version number and current/next indicator bit as a BYTE type. To get the individual bit fields, coerce this member to an MPEG_HEADER_VERSION_BITS structure.
SectionNumber
Specifies the section_number field, which gives the section number for this section.
LastSectionNumber
Specifies the last_section_number field, which gives the last (highest) section number for the table.
RemainingData[1]
Contains the remaining section data, as a byte array. The length of the array is Header.W.SectionLength - 5 bytes.
Remarks
The following code shows how to access the bit fields within the Version member:
LONG_SECTION *pSection; // Points to the section data.
// Coerce the Version field to an MPEG_HEADER_VERSION_BITS type.
MPEG_HEADER_VERSION_BITS *pVersion;
pVersion = (MPEG_HEADER_VERSION_BITS*)&pSection->Version.B;
// Now use the pHeader pointer to access the bit fields.
BYTE VersionNumber = pSection->VersionNumber;
Requirements
| Requirement | Value |
|---|---|
| Header | mpeg2structs.h |