1、 Reference number ISO/IEC 23000-12:2010/Amd.1:2011(E) ISO/IEC 2011INTERNATIONAL STANDARD ISO/IEC 23000-12 First edition 2010-07-15 AMENDMENT 1 2011-08-01 Information technology Multimedia application format (MPEG-A) Part 12: Interactive music application format AMENDMENT 1: Conformance and reference
2、 software Technologies de linformation Format pour application multimdia (MPEG-A) Partie 12: Format dapplication musicale interactive AMENDEMENT 1: Conformit et logiciel de rfrence ISO/IEC 23000-12:2010/Amd.1:2011(E) COPYRIGHT PROTECTED DOCUMENT ISO/IEC 2011 All rights reserved. Unless otherwise spe
3、cified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office
4、Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO/IEC 2011 All rights reservedISO/IEC 23000-12:2010/Amd.1:2011(E) ISO/IEC 2011 All rights reserved iiiForeword ISO (the International Organization for
5、Standardization) and IEC (the International Electrotechnical Commission) form the specialized system for worldwide standardization. National bodies that are members of ISO or IEC participate in the development of International Standards through technical committees established by the respective orga
6、nization to deal with particular fields of technical activity. ISO and IEC technical committees collaborate in fields of mutual interest. Other international organizations, governmental and non-governmental, in liaison with ISO and IEC, also take part in the work. In the field of information technol
7、ogy, ISO and IEC have established a joint technical committee, ISO/IEC JTC 1. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of the joint technical committee is to prepare International Standards. Draft International Standards
8、adopted by the joint technical committee are circulated to national bodies for voting. Publication as an International Standard requires approval by at least 75 % of the national bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subjec
9、t of patent rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights. Amendment 1 to ISO/IEC 23000-12:2010 was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology, Subcommittee SC 29, Coding of audio, picture, multimedia and hypermedia i
10、nformation. ISO/IEC 23000-12:2010/Amd.1:2011(E) ISO/IEC 2011 All rights reserved 1Information technology Multimedia application format (MPEG-A) Part 12: Interactive music application format AMENDMENT 1: Conformance and reference software After Clause 7, add the following: 8 Conformance points and co
11、nformance files 8.1 Conformance points The conformance points of Interactive Music AF (IM AF) are followed: Conformance point 1 provides basic capability to play mixed audio track according to the preset. An IM AF file that conforms to this conformance point shall have one of the brands defined in c
12、lause 7 inside its ftyp box and the preset information (prst). Files that conforms to this conformance point shall contain the following supported components: - Interactive Music AF compatible to ISO Base Media File Format - And one of the following supported audio components: MPEG-1 Audio Layer III
13、 MPEG-4 Audio AAC profile MPEG-D SAOC Baseline profile PCM Conformance point 2 provides basic capability to play mixed audio track according to the users interactive setting (such as group/track selection and volume control) which comply with the rule. An IM AF file that conforms to this conformance
14、 point shall have one of the brands defined in the clause 7 inside its ftyp box, group information (grup) and the rule information (rusc and rumx). Files that conforms to this conformance point shall contain the following supported components: - The components specified for conformance point 1 Confo
15、rmance point 3 provides capability to play image, timed text and metadata in addition to the capabilities of conformance point 1. Files that conforms to this conformance point shall contain the following supported components: - The components specified for conformance point 1 - JPEG - 3GPP Timed Tex
16、t - MPEG-7 Multimedia Description Scheme 8.2 Conformance files Conformance files shall be readable by the IM AF reference SW. The general structure of an IM AF file shall conform to the normative file structure defined in Table 2 of 6.1. The conformance files shall be used to verify some possible co
17、mbinations of components defined by the specification of the IM AF. ISO/IEC 23000-12:2010/Amd.1:2011(E) 2 ISO/IEC 2011 All rights reservedTable AMD1.1 shows the list of conformance files and the following legend applies; - C1: conforming the conformance point 1 - C2: conforming the conformance point
18、 2 - C3: conforming the conformance point 3 Table AMD1.1 Conformance files with conformance points File structure Audio Metadata Image Text No ISO-BMFF Brand grco prst rusc rumx MP3 AAC PCM SAOC MDS JPEG 3GPP TT 1 C1 C1 - C1 - - C1 - - - - - - 2 C1 C1 - C1 C2 C2 - C1 - - C3 C3 C3 3 C1 C1 - C1 C2 C2
19、- - C1 - - - - 4 C1 C1 C2 C1 C2 C2 C1 - - - - - - 5 C1 C1 - C1 - - - C1 - C1 - - - 6 C1 C1 - C1 - - C1 - - C1 - - - ISO/IEC 23000-12:2010/Amd.1:2011(E) ISO/IEC 2011 All rights reserved 3Table AMD1.2 Description of conformance files Rule No. File name Brand (Covered Brand) # of audio tracks Component
20、s Preset # of groups Selection Mixing 1 example_01.ima im01 (im02, im03, im11) 4 - MP3 - static/dynamic track volume preset - static/dynamic object volume preset - - - 2 example_02.ima im02 (im01, im03, im11, im21) 6 - AAC - JPEG - MDS - static track volume preset - - implication rule - equivalence
21、rule - limit rule 3 example_03.ima im11 (im21) 6 - PCM - static track volume preset - - exclusion rule - not mute rule - upper rule 4 example_04.ima im11 (im01, im02, im03) 14 - MP3 - static track volume preset 3 - min/max rule - lower rule 5 Example_05.ima im04 (im12) 2 - AAC - SAOC - static object
22、 volume preset - - - 6 Example_06.ima im04 (im12) 2 - MP3 - SAOC - static object volume preset - - - Remark01 Major brand of conformance file 1 is im01 and it can be also im02, im03 and im11 because difference between them is only the maximum number of simultaneously decoded audio tracks and it depe
23、nds on the player performance. Hence conformance file 1 covers the conformance test for im02, im03 and im11 with MP3 audio tracks. Remark02 As the previously mentioned in Remark01, conformance file 2 covers the conformance test for im01, im03, im11 and im21 with AAC audio tracks. Remark03 As the pre
24、viously mentioned in Remark01, conformance file 3 covers the conformance test for im21 with PCM audio tracks. Remark04 As the previously mentioned in Remark01, conformance file 4 covers the conformance test for im01, im02 and im11 with MP3 audio tracks. Remark05 As the previously mentioned in Remark
25、01, conformance file 5 covers the conformance test for im12 with AAC and SAOC audio tracks. Remark06 As the previously mentioned in Remark01, conformance file 6 covers the conformance test for im12 with MP3 and SAOC audio tracks. 9 Reference Software 9.1 Introduction The reference software consists
26、of an IM AF player and conformance files (IM AF files). The IM AF player provides the functions of parsing of the IM AF files and playing the components such as audio, image, timed- text and metadata. Especially for audio, multiple audio tracks are mixed according to the preset parameters or users d
27、irect selection/control that conform to the rules made by a producer. ISO/IEC 23000-12:2010/Amd.1:2011(E) 4 ISO/IEC 2011 All rights reserved9.2 Architecture of IM AF player IM AF Player Audio decoding module Image decoding module Mixer Rule analyzer module AAC decoder MP3 decoder JPEG decoder Metada
28、ta parsing module MPEG-7 MDS parser Preset parser libisomedia Rule checker Rule solver libfaad libmp3decoder Timed text parsing module 3GPP Timed Text parser IM AF file paser SAOC decoder saoc2mps iKlaxRuleAnalyzerFigure AMD1.1 The architecture of an Interactive Music AF player 9.2.1 IM AF file pars
29、er The IM AF file parser module is to parse the input IM AF file, and is to pass extracted samples of audio bitstreams, image bitstream, preset, rule and metadata to the relevant individual decoder and parsing module. 9.2.2 Audio decoding module The audio decoding module consists of the MPEG-4 Audio
30、 AAC profile, the MPEG-1 Audio Layer III and the MPEG-D SAOC decoders, and each decoder executes audio decoding by using the MPEG-4 Audio and the MPEG-1 Audio Layer III libraries and the MPEG-D SAOC reference software executable file, respectively. 9.2.3 Preset parser The preset parser executes to p
31、arse the preset. ISO/IEC 23000-12:2010/Amd.1:2011(E) ISO/IEC 2011 All rights reserved 59.2.4 Rule analyzer module The rule analyzer consists of a rule checker and a rule solver. The rule checker executes rule checking and rule solver executes to find solution of the rule using rule analyzer library.
32、 9.2.5 Mixer The mixer executes mixing multiple decoded audio tracks according to the gains of audio tracks for a preset or users direct control. 9.2.6 Timed text parsing module 3GPP Timed Text parser in the timed text parsing module executes to parse the 3GPP Timed Text. 9.2.7 Image decoding module
33、 JPEG decoder in the image decoding module executes image decoding by using JPEG library. 9.2.8 Metadata parsing module MPEG-7 MDS parser in the metadata parsing module executes to parse the MPEG-7 MDS metadata. 9.2.9 External modules The description for external libraries and an executable used in
34、building the reference software is provided in Table AMD1.3 External modules. Table AMD1.3 External modules External module Description libfaad The Libfaad library provides tools to decode MPEG-4 Audio AAC profile. The Libfaad is an open source MPEG-4 and MPEG-2 AAC decoder. The library is downloada
35、ble from http:/ libmp3decoder The Libmp3decoder library provides tools to decode MPEG-1 Audio Layer III. The Libmp3decoder is an open source MP3 decoder. The library is downloadable from http:/ saoc2mps The saoc2mps provides tool to decode MPEG-D SAOC. The saoc2mps is an executable file of the MPEG-
36、D SAOC reference software. libisomedia The libisomedia library provides tool to decode ISO-BMFF. The library is a module of MPEG-4 reference software. iKlaxRuleAnalyzer The iKlaxRuleAnalyzer library provides tools to find the best solution if users interaction is not compatible to the rules in the u
37、ser-mix mode, i.e. the result of the rule checker is false. The iKlax Media have provided it for IM AF reference software. The library can be provided on demand on http:/ ISO/IEC 23000-12:2010/Amd.1:2011(E) 6 ISO/IEC 2011 All rights reservedAfter Annex B, add the following annexes: Annex C (informat
38、ive) Installation of reference software This reference software is build using Microsoft Visual Studio 2005 in Windows XP SP3 platform. Follow these steps to make the reference software work appropriately in your station. 1. Extract the source code into the desired directory. The directories will be
39、 created as described in Table C.1. Table C.1 Directory structure Folder name Description bin Executable binary folder (including external and internal) common_bin Common libraries folder (buffer, thread and so on) IM_AF_Decoder IM AF decoder project folder IM_AF_Player IM AF Player project folder (
40、including UI) include External header folder lib Library folder (including external and internal) libfaad LibFAAD project folder (for decoding AAC) libisomedia Libisomedia project folder (for parsing ISO-BMFF) Libmp3decoder Libmp3decoder project folder (for decoding MP3) 2. Open the MS Visual Studio
41、 Solution file (IM_AF_Player.sln) in the MS Visual Studio 2005. 3. Rebuild all and run the application. ISO/IEC 23000-12:2010/Amd.1:2011(E) ISO/IEC 2011 All rights reserved 7Annex D (informative) User guide for reference software The IM AF player provides the user interface to play the IM AF file th
42、at conform to the IM AF specification. To open an IM AF file, press the “Open” button and select the IM AF file to play. Upon opening a file, audio tracks in the file are played and the corresponding the timed text is rendered and displayed on the bottom of the image area (if the timed text is store
43、d in the IM AF file) where the corresponding image is displayed (if the image is stored in the IM AF file). Audio master volume can be controlled by sliding the volume slide bar. Total playback time and current playback time of audio are displayed next to the slide bar. To randomly access the audio,
44、 slide the slide bar to the desired position. To pause for playing, press the “Pause” button and to replay it, press the “Play” button. To stop playing, press the “Stop” button. To close the player, click the “X” button in the title bar. Figure D.1 shows the user interface of the IM AF player. Figur
45、e D.1 User interface of the IM AF player ISO/IEC 23000-12:2010/Amd.1:2011(E) 8 ISO/IEC 2011 All rights reservedAlso user can obtain the metadata after pressing the “Info” button. The metadata browser shows the metadata stored inside the IM AF file. Figure D.2 shows the user interface of the player w
46、ith the browser showing metadata. Figure D.2 Metadata browser of the IM AF player In the middle of the IM AF player, there are buttons for selecting 4 kinds of mini browser application regarding IM AF mix modes (i.e. preset-mix and user-mix), file information and rule information stored in the IM AF
47、 file. Through these buttons interface, user can access to each mini browser application as following: The “Preset-mix” mini browser application shows the preset information stored the IM AF file. By selecting represented preset name, user can listen to rendered audio defined by a selected preset. F
48、igure D.3 shows the user interface of the player with mini browser showing “Preset-mix”. Figure D.3 User interface of the browser for preset-mix mode (“Preset-mix”) ISO/IEC 23000-12:2010/Amd.1:2011(E) ISO/IEC 2011 All rights reserved 9The “User-mix” mini browser application shows the ID buttons and volume slide bar for each audio track. User can select any audio track by pressing the ID button and control the volume of audio tracks by sliding the bar, then finally listen to rendered audio. Figure D.4 shows the user interface of the player with mini browser showing “User-mix”. Figure D.4 User
