f99f3b20fb
this is unused as the size of dates is fixed: Date - signed 8 octets integer in nanoseconds with 0 indicating the precise beginning of the millennium (at 2001-01-01T00:00:00,000000000 UTC) Change-Id: I7d44c92a6b746e92e4041238b110115b56e38a93
84 lines
3.4 KiB
C++
84 lines
3.4 KiB
C++
// Copyright (c) 2012 The WebM project authors. All Rights Reserved.
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//
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// Use of this source code is governed by a BSD-style license
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// that can be found in the LICENSE file in the root of the source
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// tree. An additional intellectual property rights grant can be found
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// in the file PATENTS. All contributing project authors may
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// be found in the AUTHORS file in the root of the source tree.
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#ifndef MKVMUXERUTIL_HPP
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#define MKVMUXERUTIL_HPP
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#include "mkvmuxer.hpp"
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#include "mkvmuxertypes.hpp"
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namespace mkvmuxer {
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class IMkvWriter;
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const uint64 kEbmlUnknownValue = 0x01FFFFFFFFFFFFFFULL;
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const int64 kMaxBlockTimecode = 0x07FFFLL;
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const uint64 kMaxTrackNumber = 126;
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// Writes out |value| in Big Endian order. Returns 0 on success.
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int32 SerializeInt(IMkvWriter* writer, int64 value, int32 size);
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// Returns the size in bytes of the element.
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int32 GetUIntSize(uint64 value);
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int32 GetIntSize(int64 value);
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int32 GetCodedUIntSize(uint64 value);
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uint64 EbmlMasterElementSize(uint64 type, uint64 value);
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uint64 EbmlElementSize(uint64 type, int64 value);
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uint64 EbmlElementSize(uint64 type, uint64 value);
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uint64 EbmlElementSize(uint64 type, float value);
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uint64 EbmlElementSize(uint64 type, const char* value);
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uint64 EbmlElementSize(uint64 type, const uint8* value, uint64 size);
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uint64 EbmlDateElementSize(uint64 type);
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// Creates an EBML coded number from |value| and writes it out. The size of
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// the coded number is determined by the value of |value|. |value| must not
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// be in a coded form. Returns 0 on success.
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int32 WriteUInt(IMkvWriter* writer, uint64 value);
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// Creates an EBML coded number from |value| and writes it out. The size of
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// the coded number is determined by the value of |size|. |value| must not
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// be in a coded form. Returns 0 on success.
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int32 WriteUIntSize(IMkvWriter* writer, uint64 value, int32 size);
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// Output an Mkv master element. Returns true if the element was written.
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bool WriteEbmlMasterElement(IMkvWriter* writer, uint64 value, uint64 size);
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// Outputs an Mkv ID, calls |IMkvWriter::ElementStartNotify|, and passes the
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// ID to |SerializeInt|. Returns 0 on success.
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int32 WriteID(IMkvWriter* writer, uint64 type);
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// Output an Mkv non-master element. Returns true if the element was written.
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bool WriteEbmlElement(IMkvWriter* writer, uint64 type, uint64 value);
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bool WriteEbmlElement(IMkvWriter* writer, uint64 type, float value);
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bool WriteEbmlElement(IMkvWriter* writer, uint64 type, const char* value);
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bool WriteEbmlElement(IMkvWriter* writer, uint64 type, const uint8* value,
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uint64 size);
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bool WriteEbmlDateElement(IMkvWriter* writer, uint64 type, int64 value);
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// Output a Mkv Frame. It decides the correct element to write (Block vs
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// SimpleBlock) based on the parameters of the Frame.
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uint64 WriteFrame(IMkvWriter* writer, const Frame* const frame,
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Cluster* cluster);
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// Output a void element. |size| must be the entire size in bytes that will be
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// void. The function will calculate the size of the void header and subtract
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// it from |size|.
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uint64 WriteVoidElement(IMkvWriter* writer, uint64 size);
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// Returns the version number of the muxer in |major|, |minor|, |build|,
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// and |revision|.
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void GetVersion(int32* major, int32* minor, int32* build, int32* revision);
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// Returns a random number to be used for UID, using |seed| to seed
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// the random-number generator (see POSIX rand_r() for semantics).
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uint64 MakeUID(unsigned int* seed);
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} // end namespace mkvmuxer
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#endif // MKVMUXERUTIL_HPP
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