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- Short: PVRG-JPEG library 1.2 and tools (68k and PPC)
- Author: (various), Andreas R. Kleinert (port)
- Uploader: Andreas_Kleinert@t-online.de
- Type: gfx/misc
-
- Changes for Amiga 68k/PPC port are documented in
- in "CHANGES.amiga". For usage information, please
- refer to "SETUP".
-
- PPC binary is called "jpeg.elf" and useable from Shell
- when being used with ppc.library V46+
-
- General information follows.
-
- --
- ARK, 7/Mar/99
-
- ************************************************************************
- Here's an excerpt from the documentation (parts left out by [...]):
- ************************************************************************
-
- MPEG, CCITT H.261 (P*64), JPEG
- Image and Image sequence compression/decompression C software engines.
-
-
- The Portable Video Research Group at Stanford have developed
- image/image sequence compression and decompression engines (codecs)
- for MPEG, CCITT H.261, and JPEG. The primary goal of these codecs is
- to provide the functionality - these codecs are not optimized for
- speed, rather completeness, and some of the code is kludgey.
-
- Development of MPEG, P64, and JPEG engines has not been the primary
- goal of the Portable Video Research Group. Our research has been
- focused on software and hardware for portable wireless digital video
- communication. The charter of this group ended in the summer of 1994.
-
- [...]
-
- III) PVRG-JPEG CODEC: (pub/jpeg/JPEGv1.2.tar.Z)
-
- This public domain image encoder and decoder is based on the JPEG
- Committee Draft. It supports all of the baseline for encoding and
- decoding. The JPEG encoder is flexible in the variety of output
- possible. It also supports lossless coding, though not as speedy as
- we would like. The manual is approximately 50 pages long which
- describes its use. The display program for JFIF-style (YCbCr) files is
- described in section IV) below. The JFIF style is not a requirement
- for this codec - it can compress and decompress CMYK, RGB, RGBalpha,
- and other formats - this codec may be helpful if you wish to extract
- information from non-JFIF encoded JPEG files.
-
- This codec has been tested on publicly available JPEG data. For
- general purpose X display, you might want to try the program "xv"
- (version 2.0 or greater). The JPEG engine of the program "xv" is
- based on the free, portable C code for JPEG compression available from
- the Independent JPEG Group. (anonymous login - ftp.uu.net (137.39.1.9
- or 192.48.96.9) /graphics/jpeg/jpegsrc.v4.tar.Z).
-
-
- ============================= Archive contents =============================
-
- Original Packed Ratio Date Time Name
- -------- ------- ----- --------- -------- -------------
- 2899 2899 0.0% 07-Mar-99 10:03:34 +blkint.jpg
- 2644 1351 48.9% 07-Mar-99 10:03:36 +CHANGES
- 604 374 38.0% 07-Mar-99 19:06:56 +CHANGES.amiga
- 8528 2338 72.5% 07-Mar-99 10:03:34 +chendct.c
- 14854 4053 72.7% 07-Mar-99 10:03:34 +codec.c
- 2147 725 66.2% 07-Mar-99 10:03:32 +csize.h
- 4348 1257 71.0% 07-Mar-99 10:03:32 +dct.h
- 474103 118322 75.0% 07-Mar-99 10:03:36 +doc.ps
- 7232 2713 62.4% 07-Mar-99 10:03:32 +globals.h
- 16802 4785 71.5% 07-Mar-99 10:03:34 +huffman.c
- 53 53 0.0% 07-Mar-99 10:17:38 +file.h
- 30497 8461 72.2% 07-Mar-99 10:03:34 +io.c
- 6494 2639 59.3% 07-Mar-99 10:03:36 +jpeg.1
- 62366 14523 76.7% 07-Mar-99 10:03:34 +jpeg.c
- 216750 80944 62.6% 07-Mar-99 19:05:38 +jpeg.elf
- 835 387 53.6% 07-Mar-99 17:49:56 +jpeg.info
- 9325 2527 72.9% 07-Mar-99 10:03:34 +leedct.c
- 42283 9871 76.6% 07-Mar-99 10:03:34 +lexer.c
- 28684 7012 75.5% 07-Mar-99 10:03:32 +lexer.l
- 1639 697 57.4% 07-Mar-99 10:03:34 +makefile
- 18008 4645 74.2% 07-Mar-99 10:03:34 +marker.c
- 1783 783 56.0% 07-Mar-99 10:03:32 +marker.h
- 2922 2922 0.0% 07-Mar-99 10:03:34 +nonint.jpg
- 3946 1811 54.1% 07-Mar-99 10:03:32 +param.h
- 365 242 33.6% 07-Mar-99 10:03:36 +PORTABILITY
- 5108 1492 70.7% 07-Mar-99 10:03:32 +prototypes.h
- 2464 1251 49.2% 07-Mar-99 18:37:34 +pvrgjpeg.readme
- 7311 3313 54.6% 07-Mar-99 10:03:36 +README
- 321 201 37.3% 07-Mar-99 17:59:38 +SCOPTIONS
- 2601 1199 53.9% 07-Mar-99 10:03:36 +SETUP
- 1739 777 55.3% 07-Mar-99 18:38:58 +smakefile
- 1803 797 55.7% 07-Mar-99 19:05:22 +smakefilePPC
- 24441 6859 71.9% 07-Mar-99 10:03:34 +stream.c
- 1548 746 51.8% 07-Mar-99 10:03:32 +stream.h
- 3678 1474 59.9% 07-Mar-99 10:03:32 +system.h
- 4706 1530 67.4% 07-Mar-99 10:03:32 +tables.h
- 625 325 48.0% 07-Mar-99 10:03:34 +test.3stream
- 3789 1010 73.3% 07-Mar-99 10:03:34 +test.huff
- 593 327 44.8% 07-Mar-99 10:03:34 +test.q
- 11621 3227 72.2% 07-Mar-99 10:03:34 +transform.c
- -------- ------- ----- --------- --------
- 1032459 300862 70.8% 17-Mar-99 00:19:26 40 files
-