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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 2 | pj | 1 | MPEG Video Software Decoder |
| 2 | (Version 2.3; March 1996) |
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| 3 | |||
| 4 | Lawrence A. Rowe, Ketan Patel, Brian Smith, Steve Smoot, and Eugene Hung |
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| 5 | Computer Science Division-EECS, Univ. of Calif. at Berkeley |
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| 6 | |||
| 7 | This directory contains a public domain MPEG video software |
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| 8 | decoder. The decoder is implemented as a library that will |
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| 9 | take a video stream and display it in an X window on an 8, 24 |
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| 10 | or 32 bit deep display. The main routine is supplied to |
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| 11 | demonstrate the use of the decoder library. Several dithering |
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| 12 | algorithms are supplied based on the Floyd-Steinberg, ordered |
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| 13 | dither, and half-toning algorithms that tradeoff quality and |
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| 14 | performance. Neither the library nor the main routine handle |
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| 15 | real-time synchronization or audio streams. |
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| 16 | |||
| 17 | The decoder implements the standard described in the Committee |
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| 18 | Draft ISO/IEC CD 11172 dated December 6, 1991 which is |
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| 19 | sometimes refered to as "Paris Format." The code has been |
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| 20 | compiled and tested on the following platforms: |
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| 21 | |||
| 22 | HP PA-RISC (HP/UX 9.X, X11R5) (i.e., HP 9000/7XX and 9000/3XX) |
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| 23 | Sun Sparc (SunOS 4.X, Solaris) |
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| 24 | DECstation 5000 and Alpha |
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| 25 | Silicon Graphics Indigo |
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| 26 | MIPS RISC/os 4.51 |
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| 27 | Linux |
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| 28 | |||
| 29 | If you decide to port the code to a new architecture, please let |
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| 30 | us know if there are any significant changes, so that we can incorporate |
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| 31 | them into our sources. |
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| 32 | |||
| 33 | This directory contains everything required to build and |
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| 34 | display video. We have included source code, a makefile, an Imakefile, |
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| 35 | installation instructions, and a man page. Data files can |
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| 36 | be obtained from the same ftp site this was located in. |
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| 37 | See the INSTALL file for instructions on how to |
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| 38 | compile and run the decoder. |
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| 39 | |||
| 40 | Our future plans include porting the decoder to run on other |
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| 41 | platforms, integrating it into a video playback system that |
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| 42 | supports real-time synchronization and audio streams, and |
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| 43 | further experiments to improve the performance of the |
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| 44 | decoder. Vendors or other organizations interested in supporting |
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| 45 | this research or discussing other aspects of this project should |
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| 46 | contact Larry Rowe at Rowe@CS.Berkeley.EDU. |
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| 47 | |||
| 48 | The decoder can not be compiled as a library, see README.lib |
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| 49 | |||
| 50 | Reporting bugs: |
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| 51 | If you find any bugs in this software, please send them to |
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| 52 | mpeg-bugs@plateau.cs.berkeley.edu. Since this software |
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| 53 | is unsupported, we make no guarantees about how long it will |
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| 54 | take to fix the bug, or if it will be fixed at all. Bug fixes |
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| 55 | will be cheerfully accepted. Please include as much detailed |
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| 56 | information as possible, including: |
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| 57 | |||
| 58 | 1) the version number of the program you are using (cf. VERSION) |
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| 59 | 2) the data file that caused the bug (if possible) |
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| 60 | 3) the OS version and machine type you ran the program on |
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| 61 | 4) the compiler used to compile the program |
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| 62 | |||
| 63 | ACKNOWLEDGEMENTS: |
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| 64 | We gratefully thank Hewlett-Packard, Fujitsu, the Semiconductor |
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| 65 | Research Corporation for financial support. |
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| 66 | |||
| 67 | We also want to thank the following people for their help: |
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| 68 | |||
| 69 | Tom Lane of the Independent JPEG Group provided us with |
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| 70 | the basic inverse DCT code used by our player. |
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| 71 | (tom_lane@g.gp.cs.cmu.edu) |
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| 72 | |||
| 73 | Reid Judd of Sun Microsystems provided advice and assistance. |
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| 74 | |||
| 75 | Todd Brunhoff of NVR provided advice and assistance. |
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| 76 | |||
| 77 | Toshihiko Kawai of Sony provided advice and assistance. |