1、 Copyright 2014 by THE SOCIETY OF MOTION PICTURE AND TELEVISION ENGINEERS 3 Barker Avenue, White Plains, NY 10601 (914) 761-1100 Approved May 13, 2014 Table of Contents Page Foreword . 2 Intellectual Property 2 Introduction 2 1 Scope . 3 2 Conformance Notation . 3 3 Normative References . 4 4 Level
2、A Direct Mapping of Source Image Formats . 5 4.1 20-Bit Virtual Interface 6 4.2 Virtual Interface Data Stream Mappings . 12 5 Level B Mapping of SMPTE ST 372 Dual-Link . 21 5.1 SMPTE ST 372 Dual Link Mapping . 22 6 Level B 2 x SMPTE ST 292-1 (HD-SDI) Dual-Stream Mapping . 24 6.1 2 x SMPTE ST 292-1 (
3、HD-SDI) Dual Stream Mapping . 24 7 Levels of Operation (Informative) 26 Annex A Bibliography (Informative) . 27 Annex B Level A Mapping Compared to Level B Mapping (Informative) 28 B.1 Level A 10-Bit Multiplex to a SMPTE 424 Interface . 28 B.2 Level B 10-Bit Multiplex to a SMPTE 424 Interface . 28 A
4、nnex C Derivation of 32-Channel Audio Multiplexing Restrictions for Level A Direct Mappings (Informative) 30 Annex D SMPTE ST 425-1 Document Road Map illustrating “Data Flow Hierarchy” (Informative) 32 Revision Notes 33 Page 1 of 33 pages SMPTE ST 425-1:2014 Revision of SMPTE ST 425-1:2011 SMPTE STA
5、NDARD Source Image Format and Ancillary Data Mapping for the 3 Gb/s Serial Interface SMPTE ST 425-1:2014 Page 2 of 33 pages Foreword SMPTE (the Society of Motion Picture and Television Engineers) is an internationally-recognized standards developing organization. Headquartered and incorporated in th
6、e United States of America, SMPTE has members in over 80 countries on six continents. SMPTEs Engineering Documents, including Standards, Recommended Practices, and Engineering Guidelines, are prepared by SMPTEs Technology Committees. Participation in these Committees is open to all with a bona fide
7、interest in their work. SMPTE cooperates closely with other standards-developing organizations, including ISO, IEC and ITU. SMPTE Engineering Documents are drafted in accordance with the rules given in its Standards Operations Manual. SMPTE ST 425-1 was prepared by Technology Committee 32NF. Intelle
8、ctual Property At the time of publication no notice had been received by SMPTE claiming patent rights essential to the implementation of this Standard. However, attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. SMPTE shall not be he
9、ld responsible for identifying any or all such patent rights. Introduction This section is entirely informative and does not form an integral part of this Engineering Document. SMPTE ST 292-1 was originally developed to provide a serial digital connection between HDTV equipment operating largely wit
10、h 10-bit YCBCR 4:2:2 signals to a maximum frame rate of 30 frames per second. Over time, SMPTE ST 292-1 applications were expanded to include larger picture formats, higher refresh rates and to provide support for RGB and 12-bit source signal formats and the carriage of packetized data. The total da
11、ta rate required to support these additional applications is 2.970 Gb/s or 2.970/1.001 Gb/s and the digital interface used to carry these payloads has been realized using a dual-link structure as defined in SMPTE ST 372. This standard defines the mapping of various source image formats onto a single
12、 link serial digital interface operating at a nominal rate of 3 Gb/s. SMPTE ST 425-1:2014 Page 3 of 33 pages 1 Scope This standard defines three mapping formats: Level A, Level B Dual-Link mapping and Level B Dual-Stream mapping as described below; Level A specifies: The direct mapping of various un
13、compressed video image formats as defined in Table 1; The direct mapping of packetized data; The carriage of ancillary data such as the audio data, the audio control packets, the payload ID, the time code, etc.; into a serial digital interface operating at a nominal rate of 3 Gb/s. Level B Dual-Link
14、 mapping specifies: The mapping of the SMPTE ST 372 Dual Link interface (Dual-Link mapping) as defined in Table 13 into a serial digital interface operating at a nominal rate of 3 Gb/s. Level B Dual-Stream mapping specifies: The mapping of 2 x SMPTE ST 292-1 (HD-SDI) interfaces (Dual-Stream mapping)
15、 as defined in Table 14 into a serial digital interface operating at a nominal rate of 3 Gb/s. Uncompressed video image formats or packetized data, and all applicable ancillary data such as the audio data, the audio control packets, the payload ID, the time code, etc. shall be mapped into SMPTE ST 3
16、72 Dual Link and 2 x SMPTE ST 292-1 interfaces prior to mapping into the virtual interfaces. It is not necessary for implementations to include support for all formats defined in Table 1, Table 13 and Table 14 to conform to this standard. Implementers should indicate supported formats in commercial
17、publications. 2 Conformance Notation Normative text is text that describes elements of the design that are indispensable or contains the conformance language keywords: “shall“, “should“, or “may“. Informative text is text that is potentially helpful to the user, but not indispensable, and can be rem
18、oved, changed, or added editorially without affecting interoperability. Informative text does not contain any conformance keywords. All text in this document is, by default, normative, except: the Introduction, any section explicitly labeled as “Informative“ or individual paragraphs that start with
19、“Note:” The keywords “shall“ and “shall not“ indicate requirements strictly to be followed in order to conform to the document and from which no deviation is permitted. The keywords, “should“ and “should not“ indicate that, among several possibilities, one is recommended as particularly suitable, wi
20、thout mentioning or excluding others; or that a certain course of action is preferred but not necessarily required; or that (in the negative form) a certain possibility or course of action is deprecated but not prohibited. The keywords “may“ and “need not“ indicate courses of action permissible with
21、in the limits of the document. The keyword “reserved” indicates a provision that is not defined at this time, shall not be used, and may be defined in the future. The keyword “forbidden” indicates “reserved” and in addition indicates that the provision will never be defined in the future. SMPTE ST 4
22、25-1:2014 Page 4 of 33 pages A conformant implementation according to this document is one that includes all mandatory provisions (“shall“) and, if implemented, all recommended provisions (“should“) as described. A conformant implementation need not implement optional provisions (“may“) and need not
23、 implement them as described. Unless otherwise specified, the order of precedence of the types of normative information in this document shall be as follows: Normative prose shall be the authoritative definition; Tables shall be next; followed by formal languages; then figures; and then any other la
24、nguage forms. 3 Normative References Note: All references in this document to other SMPTE documents use the current numbering style (e.g. SMPTE ST 274:2008) although, during a transitional phase, the document as published (printed or PDF) may bear an older designation (such as SMPTE 274M-2008). Docu
25、ments with the same root number (e.g. 274) and publication year (e.g. 2008) are functionally identical. The following standards contain provisions which, through reference in this text, constitute provisions of this standard. At the time of publication, the editions indicated were valid. All standar
26、ds are subject to revision, and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent edition of the standards indicated below. SMPTE ST 12-2:2014, Transmission of Time Code in the Ancillary Data Space SMPTE ST 274:2008, Television 192
27、0 x 1080 Image Sample Structure, Digital Representation and Digital Timing Reference Sequences for Multiple Picture Rates SMPTE ST 291-1:2011, Ancillary Data Packet and Space Formatting SMPTE ST 292-1:2012, 1.5 Gb/s Signal/Data Serial Interface SMPTE ST 296:2012, Television 1280 x 720 Progressive Im
28、age 4:2:2 and 4:4:4 Sample Structure Analog and Digital Representation and Analog Interface SMPTE ST 299-1:2009, 24-Bit Digital Audio Format for SMPTE ST 292-1 Bit-Serial Interface SMPTE ST 299-2:2010, Extension of the 24-Bit Digital Audio Format to 32 Channels for 3 Gb/s Bit-Serial Interfaces SMPTE
29、 ST 352:2013, Payload Identification Codes for Serial Digital Interfaces SMPTE ST 372:2011, Dual Link 1.5 Gb/s Digital Interface for 1920 x 1080 and 2048 1080 Picture Formats SMPTE ST 428-9:2008, D-Cinema Distribution Master Image Pixel Structure Level 3 Serial Digital Interface Signal Formatting SM
30、PTE ST 428-19:2010, D-Cinema Distribution Master Additional Frame Rates Level AFR2 and Level AFR4 Serial Digital Interface Signal Formatting SMPTE ST 2048-2:2011, 2048 x 1080 Digital Cinematography Production Image FS/709 Formatting for Serial Digital Interface SMPTE ST 425-1:2014 Page 5 of 33 pages
31、 4 Level A Direct Mapping of Source Image Formats For this interface, the source data shall be an uncompressed 10-bit or 12-bit video signal corresponding to the source image formats identified in Table 1. Users should be aware that this interface may carry packetized data as defined by other applic
32、ation documents providing the constraints defined in this standard and that of the source image formats are observed. An auxiliary component signal designated A or Alpha may optionally accompany the RGB, RFSGFSBFS (hereafter RGB indicates both RGB and RFSGFSBFS) or YCBCR video signal. If present it
33、shall have the same characteristics as the Y or G channel as defined for the source image formatting interface. Interfaces containing the auxiliary component are denoted as RGB+A and YCBCR +A. Table 1 Source Image Formats Mapping Structure Reference SMPTE Standard Image Format Signal Format Sampling
34、 Structure/Pixel Depth Frame/Field Rates Transport 1 ST 274 1920 1080 4:2:2 (YCBCR)/10-bit 60, 60/1.001 and 50 Frames Progressive Progressive ST 2048-2 2048 x 1080*6 4:2:2 (YCBCR)/10-bit 60, 60/1.001, 50, 48 and 48/1.001 Frames Progressive Progressive 2 ST 296 1280 x 720 4:4:4 (RGB), 4:4:4:4 (RGB +A
35、)/10-bit*4 4:4:4 (YCBCR), 4:4:4:4 (YCBCR+A)/10-bit*4 60, 60/1.001 and 50 Frames Progressive Progressive 30, 30/1.001, 25, 24 and 24/1.001 Frames Progressive Progressive ST 274 1920 x 1080 4:4:4 (RGB), 4:4:4:4 (RGB +A)/10-bit*4 4:4:4 (YCBCR), 4:4:4:4 (YCBCR+A)/10-bit*4 60, 60/1.001 and 50 Fields Inte
36、rlaced Interlaced 30, 30/1.001, 25, 24 and 24/1.001 Frames Progressive Progressive 30, 30/1.001, 25, 24 and 24/1.001 PsF PsF*1 ST 2048-2 2048 x 1080*6 4:4:4 (RGB)*7, 4:4:4:4 (RGB +A)/10-bit*4 4:4:4 (YCBCR), 4:4:4:4 (YCBCR+A)/10-bit*4 30, 30/1.001, 25, 24 and 24/1.001 Frames Progressive Progressive 3
37、0, 30/1.001, 25, 24 and 24/1.001 PsF PsF*1 3 ST 274 1920 x 1080 4:4:4 (RGB)/12-bit 4:4:4 (YCBCR)/12-bit 60, 60/1.001 and 50 Fields Interlaced Interlaced 30, 30/1.001, 25, 24 and 24/1.001 Frames Progressive Progressive ST 2048-2 2048 x 1080*6 4:4:4 (RGB)*7/12-bit 4:4:4 (YCBCR)/12-bit 30, 30/1.001, 25
38、, 24 and 24/1.001 Frames Progressive Progressive 30, 30/1.001, 25, 24 and 24/1.001 Frames PsF PsF*1 SMPTE ST 425-1:2014 Page 6 of 33 pages ST 428-9 2048 x 1080*5 4:4:4 (XYZ)/12-bit 24 Frames Progressive Progressive 24 Frames PsF PsF*2 ST 428-19 2048 x 1080*5 4:4:4 (XYZ)/12-bit 25 and 30Frames Progre
39、ssive Progressive 25 and 30Frames PsF PsF*3 4 ST 274 1920 x 1080 4:2:2 (YCBCR)/12-bit 60, 60/1.001 and 50 Fields Interlaced Interlaced 30, 30/1.001, 25, 24 and 24/1.001 Frames Progressive Progressive 30, 30/1.001, 25, 24 and 24/1.001 Frames PsF PsF*1 ST 2048-2 2048 x 1080*6 4:2:2 (YCBCR)/12-bit 4:2:
40、2:4 (YCBCR+A)/12-bit*8 30, 30/1.001, 25, 24 and 24/1.001 Frames Progressive Progressive 30, 30/1.001, 25, 24 and 24/1.001 Frames PsF PsF*1 *1 PsF structure as defined in SMPTE ST 274. *2 PsF structure as defined in SMPTE ST 428-9. *3 PsF structure as defined in SMPTE ST 428-19. *4 Definition of the
41、A channel is application dependent for mapping of these 10-bit signal structures: when used for non-picture data, the data words shall be 8-bit maximum, B8 is even parity for B7 through B0, and B9 is the complement of B8. when used for picture data, code words 000h to 003h and 3FCh to 3FFh shall be
42、used exclusively for synchronization. *5 This is the image container size, the active image may not fill the container. *6 This is the maximum pixel array, the active image may not fill the maximum array. *7 In this image format RGB indicates either RGB or RFSGFSBFS. *8 Definition of the A channel i
43、s application dependent for mapping of this 12-bit signal structure: when used for non-picture data, the data words shall be 8-bit maximum, B10 is even parity for data word B9 through B2, B11 is the complement of B10, and B1 through B0 are zero. when used for picture data, the raster format and fram
44、e rate shall be the same as the Y signal carried on the virtual interface. 4.1 20-Bit Virtual Interface R, G, B,/ Y, CB, CR,/ X, Y, Z and A components shall be mapped into a virtual interface consisting of two parallel 10-bit data streams data stream one and data stream two, as shown in Figures 1 th
45、rough 4. Each data stream shall have an interface frequency of 148.5 MHz or 148.5/1.001 MHz. Mapping of the data created by the signal format, sampling structure and pixel depth shall be in accordance with 4.2.1 through 4.2.4 of this standard. 4.1.1 Timing Reference Signals EAV (End of Active Video)
46、 and SAV (Start of Active Video) timing references shall be inserted into data stream one and data stream two of the virtual interface on a line-by-line basis as shown in Figures 1 through 4. SMPTE ST 425-1:2014 Page 7 of 33 pages The EAV and SAV sequence, F (field/ frame), V (vertical), H (horizont
47、al) and parity bits P3 through P1 shall be as defined in the source image formatting document. Mapping of the timing reference signals into the virtual interface shall be in accordance with 4.2.1 through 4.2.4 of this standard. 4.1.2 Line Numbers Line numbers shall be inserted into data stream one a
48、nd data stream two of the virtual interface starting at the first data word (of the virtual interface) following the EAV XYZ word, as shown in Figures 1 through 4. For Progressive and Interlaced structures, the interface line numbers shall be in accordance with the picture source line numbers as def
49、ined in the source image formatting document. The exception to this rule applies to the image formats of SMPTE ST 428-9 and SMPTE ST 428-19, for which the interface line numbers shall be in accordance with the container frame structure. Line number data are composed of two words, LN0 and LN1, and shall be as shown in Table 2. Table 2 Line Number Data B9 (msb) B8 B7 B6 B5 B4 B3 B2 B1 B0 (lsb
