2008-04-14 04:09:29 +00:00
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ADTS
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====
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::
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frame:
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byte alignment
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fixed header
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variable header
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error check
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for (ii = 0; ii < no raw blocks in frame + 1; ii++)
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raw data block
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fixed header: (the same for all frames)
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syncword 12 ('1111 1111 1111') 12
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id 1 (1=MPEG-2 AAC, 0=MPEG-4)
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layer 2 ('00')
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protection absent 1 (see below)
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profile objecttype 2
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sampling freq index 4
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private bit 1 (not used)
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channel config 3
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original/copy 1
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home 1 16
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emphasis 2 (maybe only if id=1?)
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variable header:
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copyright id bit 1
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copyright id start 1
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aac frame length 13 (length of whole frame, inc. headers)
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adts buffer fullness 11
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no raw data blocks in frame 2 (0=>1 raw data block)
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error check:
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if protection absent == 0:
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crc check 16
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.. ***** BEGIN LICENSE BLOCK *****
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License
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-------
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Version: MPL 1.1
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The contents of this file are subject to the Mozilla Public License Version
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1.1 (the "License"); you may not use this file except in compliance with
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the License. You may obtain a copy of the License at
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http://www.mozilla.org/MPL/
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Software distributed under the License is distributed on an "AS IS" basis,
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WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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for the specific language governing rights and limitations under the
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License.
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The Original Code is the MPEG TS, PS and ES tools.
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The Initial Developer of the Original Code is Amino Communications Ltd.
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Portions created by the Initial Developer are Copyright |copy| 2008
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the Initial Developer. All Rights Reserved.
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.. |copy| unicode:: 0xA9 .. copyright sign
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Contributor(s):
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Amino Communications Ltd, Swavesey, Cambridge UK
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.. ***** END LICENSE BLOCK *****
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2008-06-14 16:42:19 +00:00
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.. -------------------------------------------------------------------------------
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.. vim: set filetype=rst expandtab shiftwidth=2:
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