80 lines
1.9 KiB
C
80 lines
1.9 KiB
C
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#pragma once
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#include <bfc/platform/types.h>
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#include "mkv_reader.h"
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// IDs
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// these are slightly different from the matroska spec because we specify
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// values after vint decoding and they specify before
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const uint32_t mkv_header=0xa45dfa3;
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const uint32_t mkv_header_ebml_version=0x286;
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const uint32_t mkv_header_ebml_read_version=0x2f7;
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const uint32_t mkv_header_ebml_max_id_length=0x2f2;
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const uint32_t mkv_header_ebml_max_size_length=0x2f3;
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const uint32_t mkv_header_doctype=0x282;
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const uint32_t mkv_header_doctype_read_version=0x285;
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const uint32_t mkv_header_doctype_version=0x287;
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namespace nsmkv
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{
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class Header
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{
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public:
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// defaults provided as per spec for matroska
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// *_found variables indicate whether the field was found in the file
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Header() :
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ebml_version(1),
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ebml_read_version(1),
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ebml_max_id_length(4),
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ebml_max_size_length(8),
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doctype(0),
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doctype_version(1),
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doctype_read_version(1),
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ebml_header_found(false)
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#ifdef WA_VALIDATE
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,
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ebml_version_found(false),
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ebml_read_version_found(false),
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ebml_max_id_length_found(false),
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ebml_max_size_length_found(false),
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doctype_version_found(false),
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doctype_found(false),
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doctype_read_version_found(false)
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#endif
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{
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}
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~Header()
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{
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if (doctype)
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free(doctype);
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}
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void OwnDocType(char *_doctype)
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{
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if (doctype)
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free(doctype);
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doctype = _doctype;
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}
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uint64_t ebml_version;
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uint64_t ebml_read_version;
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uint64_t ebml_max_id_length;
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uint64_t ebml_max_size_length;
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char *doctype;
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uint64_t doctype_version;
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uint64_t doctype_read_version;
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bool ebml_header_found;
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#ifdef WA_VALIDATE
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bool ebml_version_found;
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bool ebml_read_version_found;
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bool ebml_max_id_length_found;
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bool doctype_found;
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bool ebml_max_size_length_found;
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bool doctype_version_found;
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bool doctype_read_version_found;
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#endif
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};
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// returns bytes read. 0 means EOF
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uint64_t ReadHeader(nsmkv::MKVReader *reader, uint64_t size, nsmkv::Header &header);
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};
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