JPEG on NIOS II

use IJG jpeglib library (www.ijg.org), most software is based around this decoder. It's highly portable in that it literally takes a few minutes to port to a new target (should run straight out of the box!) and it's free - only rule is you have to put a small copyright notice somewhere (i.e documentation). In the past I've used it on various consoles, Playstation 1 & dreamcast without any effort.

Adrian

That sounds like a fun project, I'm trying to do something like that at home.

My processor will probably be the size of 5 NIOS II processors but that&#39;s ok http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/smile.gif

I&#39;m going for a quad vector architecture so that I can work on the video in 2x2 blocks.

and adac, are you a console developer?

Hi guys I’ve been trying to compile the jpeg source code for the NIOS II Linux Distro, but I’ve caught a snag. It seems that the libc.a that I have gives a compiler error. Now I am completely new to this cross-compiling thing so maybe I’m doing something wrong, or just missing something. But the source compiles flawlessly wit the gcc that came with the Windows NT update.

Here is the ./configure output

<div class='quotetop'>QUOTE </div>

--- Quote Start ---

checking for gcc... gcc

checking whether the C compiler (gcc ) works... yes

checking whether the C compiler (gcc ) is a cross-compiler... no

checking whether we are using GNU C... egrep: not found

no

checking how to run the C preprocessor... gcc -E

checking for function prototypes... yes

checking for stddef.h... yes

checking for stdlib.h... yes

checking for string.h... yes

checking for size_t... yes

checking for type unsigned char... yes

checking for type unsigned short... yes

checking for type void... yes

checking for working const... yes

checking for inline... __inline__

checking for broken incomplete types... ok

checking for short external names... ok

checking to see if char is signed... yes

checking to see if right shift is signed... yes

checking to see if fopen accepts b spec... yes

checking for a BSD compatible install... /bin/install -c

checking for ranlib... ranlib

checking libjpeg version number... 62

creating ./config.status

creating Makefile

creating jconfig.h

jconfig.h is unchanged[/b]

--- Quote End ---

Then I edit the Makefile and change the CC option from gcc to nios2-elf-gcc.

Next I run nios2-elf-make.

<div class='quotetop'>QUOTE </div>

--- Quote Start ---

nios2-elf-gcc -O -I. -c -o jcapistd.o jcapistd.c

nios2-elf-gcc -O -I. -c -o jctrans.o jctrans.c

nios2-elf-gcc -O -I. -c -o jcparam.o jcparam.c

nios2-elf-gcc -O -I. -c -o jdatadst.o jdatadst.c

nios2-elf-gcc -O -I. -c -o jcinit.o jcinit.c

nios2-elf-gcc -O -I. -c -o jcmaster.o jcmaster.c

nios2-elf-gcc -O -I. -c -o jcmarker.o jcmarker.c

nios2-elf-gcc -O -I. -c -o jcmainct.o jcmainct.c

nios2-elf-gcc -O -I. -c -o jcprepct.o jcprepct.c

nios2-elf-gcc -O -I. -c -o jccoefct.o jccoefct.c

nios2-elf-gcc -O -I. -c -o jccolor.o jccolor.c

nios2-elf-gcc -O -I. -c -o jcsample.o jcsample.c

nios2-elf-gcc -O -I. -c -o jchuff.o jchuff.c

nios2-elf-gcc -O -I. -c -o jcphuff.o jcphuff.c

nios2-elf-gcc -O -I. -c -o jcdctmgr.o jcdctmgr.c

nios2-elf-gcc -O -I. -c -o jfdctfst.o jfdctfst.c

nios2-elf-gcc -O -I. -c -o jfdctflt.o jfdctflt.c

nios2-elf-gcc -O -I. -c -o jfdctint.o jfdctint.c

nios2-elf-gcc -O -I. -c -o jdapimin.o jdapimin.c

nios2-elf-gcc -O -I. -c -o jdapistd.o jdapistd.c

nios2-elf-gcc -O -I. -c -o jdtrans.o jdtrans.c

nios2-elf-gcc -O -I. -c -o jdatasrc.o jdatasrc.c

nios2-elf-gcc -O -I. -c -o jdmaster.o jdmaster.c

nios2-elf-gcc -O -I. -c -o jdinput.o jdinput.c

nios2-elf-gcc -O -I. -c -o jdmarker.o jdmarker.c

nios2-elf-gcc -O -I. -c -o jdhuff.o jdhuff.c

nios2-elf-gcc -O -I. -c -o jdphuff.o jdphuff.c

nios2-elf-gcc -O -I. -c -o jdmainct.o jdmainct.c

nios2-elf-gcc -O -I. -c -o jdcoefct.o jdcoefct.c

nios2-elf-gcc -O -I. -c -o jdpostct.o jdpostct.c

nios2-elf-gcc -O -I. -c -o jddctmgr.o jddctmgr.c

nios2-elf-gcc -O -I. -c -o jidctfst.o jidctfst.c

nios2-elf-gcc -O -I. -c -o jidctflt.o jidctflt.c

nios2-elf-gcc -O -I. -c -o jidctint.o jidctint.c

nios2-elf-gcc -O -I. -c -o jidctred.o jidctred.c

nios2-elf-gcc -O -I. -c -o jdsample.o jdsample.c

nios2-elf-gcc -O -I. -c -o jdcolor.o jdcolor.c

nios2-elf-gcc -O -I. -c -o jquant1.o jquant1.c

nios2-elf-gcc -O -I. -c -o jquant2.o jquant2.c

nios2-elf-gcc -O -I. -c -o jdmerge.o jdmerge.c

nios2-elf-gcc -O -I. -c -o jcomapi.o jcomapi.c

nios2-elf-gcc -O -I. -c -o jutils.o jutils.c

nios2-elf-gcc -O -I. -c -o jerror.o jerror.c

nios2-elf-gcc -O -I. -c -o jmemmgr.o jmemmgr.c

nios2-elf-gcc -O -I. -c -o jmemnobs.o jmemnobs.c

rm -f libjpeg.a

ar rc libjpeg.a jcapimin.o jcapistd.o jctrans.o jcparam.o jdatadst.o jcinit.o j

cmaster.o jcmarker.o jcmainct.o jcprepct.o jccoefct.o jccolor.o jcsample.o jchuf

f.o jcphuff.o jcdctmgr.o jfdctfst.o jfdctflt.o jfdctint.o jdapimin.o jdapistd.o

jdtrans.o jdatasrc.o jdmaster.o jdinput.o jdmarker.o jdhuff.o jdphuff.o jdmainct

.o jdcoefct.o jdpostct.o jddctmgr.o jidctfst.o jidctflt.o jidctint.o jidctred.o

jdsample.o jdcolor.o jquant1.o jquant2.o jdmerge.o jcomapi.o jutils.o jerror.o j

memmgr.o jmemnobs.o

ranlib libjpeg.a

nios2-elf-gcc -O -I. -c -o cjpeg.o cjpeg.c

nios2-elf-gcc -O -I. -c -o rdppm.o rdppm.c

nios2-elf-gcc -O -I. -c -o rdgif.o rdgif.c

nios2-elf-gcc -O -I. -c -o rdtarga.o rdtarga.c

nios2-elf-gcc -O -I. -c -o rdrle.o rdrle.c

nios2-elf-gcc -O -I. -c -o rdbmp.o rdbmp.c

nios2-elf-gcc -O -I. -c -o rdswitch.o rdswitch.c

nios2-elf-gcc -O -I. -c -o cdjpeg.o cdjpeg.c

nios2-elf-gcc -o cjpeg cjpeg.o rdppm.o rdgif.o rdtarga.o rdrle.o rdbmp.o rdswit

ch.o cdjpeg.o libjpeg.a

/cygdrive/c/altera/kits/nios2/bin/nios2-gnutools/H-i686-pc-cygwin/bin/../lib/gcc

-lib/nios2-elf/3.3.3/../../../../nios2-elf/lib/libc.a(closer.o): In function `_c

lose_r&#39;:

closer.o(.text+0x20): warning: _close is not implemented and will always fail

/cygdrive/c/altera/kits/nios2/bin/nios2-gnutools/H-i686-pc-cygwin/bin/../lib/gcc

-lib/nios2-elf/3.3.3/../../../../nios2-elf/lib/libc.a(fstatr.o): In function `_f

stat_r&#39;:

fstatr.o(.text+0x28): warning: _fstat is not implemented and will always fail

/cygdrive/c/altera/kits/nios2/bin/nios2-gnutools/H-i686-pc-cygwin/bin/../lib/gcc

-lib/nios2-elf/3.3.3/../../../../nios2-elf/lib/libc.a(makebuf.o): In function `_

_smakebuf&#39;:

makebuf.o(.text+0xf8): warning: isatty is not implemented and will always fail

/cygdrive/c/altera/kits/nios2/bin/nios2-gnutools/H-i686-pc-cygwin/bin/../lib/gcc

-lib/nios2-elf/3.3.3/../../../../nios2-elf/lib/libc.a(lseekr.o): In function `_l

seek_r&#39;:

lseekr.o(.text+0x2c): warning: _lseek is not implemented and will always fail

/cygdrive/c/altera/kits/nios2/bin/nios2-gnutools/H-i686-pc-cygwin/bin/../lib/gcc

-lib/nios2-elf/3.3.3/../../../../nios2-elf/lib/libc.a(openr.o): In function `_op

en_r&#39;:

openr.o(.text+0x2c): warning: _open is not implemented and will always fail

/cygdrive/c/altera/kits/nios2/bin/nios2-gnutools/H-i686-pc-cygwin/bin/../lib/gcc

-lib/nios2-elf/3.3.3/../../../../nios2-elf/lib/libc.a(readr.o): In function `_re

ad_r&#39;:

readr.o(.text+0x2c): warning: _read is not implemented and will always fail

/cygdrive/c/altera/kits/nios2/bin/nios2-gnutools/H-i686-pc-cygwin/bin/../lib/gcc

-lib/nios2-elf/3.3.3/../../../../nios2-elf/lib/libc.a(writer.o): In function `_w

rite_r&#39;:

writer.o(.text+0x2c): warning: _write is not implemented and will always fail

/cygdrive/c/altera/kits/nios2/bin/nios2-gnutools/H-i686-pc-cygwin/bin/../lib/gcc

-lib/nios2-elf/3.3.3/../../../../nios2-elf/lib/libc.a(getenv_r.o): In function `

_findenv_r&#39;:

getenv_r.o(.text+0x34): undefined reference to `__env_lock&#39;

getenv_r.o(.text+0xb8): undefined reference to `__env_unlock&#39;

getenv_r.o(.text+0x100): undefined reference to `__env_unlock&#39;

collect2: ld returned 1 exit status

nios2-elf-make: *** [cjpeg] Error 1[/b]

--- Quote End ---

How do I regenerate libc.a? Is that even where the problem is? Is there another way to compile the jpeg source for the NIOS II Linux distro?

MORE INFO:

JPEG source version : 6b

gcc version: 2.95.3-5 (cygwin special)

nios2-elf-gcc version: 3.3.3 (Altera Nios II 1.0 b316)

--- Quote Start ---

originally posted by janhendrik@Aug 18 2004, 11:49 AM

hi guys i’ve been trying to compile the jpeg source code for the nios ii linux distro, but i’ve caught a snag. it seems that the libc.a that i have gives a compiler error. now i am completely new to this cross-compiling thing so maybe i’m doing something wrong, or just missing something. but the source compiles flawlessly wit the gcc that came with the windows nt update.

here is the ./configure output

<div class='quotetop'>quote

--- quote end ---

--- quote start ---

checking for gcc... gcc

checking whether the c compiler (gcc ) works... yes

checking whether the c compiler (gcc ) is a cross-compiler... no

checking whether we are using gnu c... egrep: not found

no

checking how to run the c preprocessor... gcc -e

checking for function prototypes... yes

checking for stddef.h... yes

checking for stdlib.h... yes

checking for string.h... yes

checking for size_t... yes

checking for type unsigned char... yes

checking for type unsigned short... yes

checking for type void... yes

checking for working const... yes

checking for inline... __inline__

checking for broken incomplete types... ok

checking for short external names... ok

checking to see if char is signed... yes

checking to see if right shift is signed... yes

checking to see if fopen accepts b spec... yes

checking for a bsd compatible install... /bin/install -c

checking for ranlib... ranlib

checking libjpeg version number... 62

creating ./config.status

creating makefile

creating jconfig.h

jconfig.h is unchanged

--- Quote End ---

Then I edit the Makefile and change the CC option from gcc to nios2-elf-gcc.

Next I run nios2-elf-make.

<div class='quotetop'>QUOTE </div>

--- Quote Start ---

nios2-elf-gcc -O -I. -c -o jcapistd.o jcapistd.c

nios2-elf-gcc -O -I. -c -o jctrans.o jctrans.c

nios2-elf-gcc -O -I. -c -o jcparam.o jcparam.c

nios2-elf-gcc -O -I. -c -o jdatadst.o jdatadst.c

nios2-elf-gcc -O -I. -c -o jcinit.o jcinit.c

nios2-elf-gcc -O -I. -c -o jcmaster.o jcmaster.c

nios2-elf-gcc -O -I. -c -o jcmarker.o jcmarker.c

nios2-elf-gcc -O -I. -c -o jcmainct.o jcmainct.c

nios2-elf-gcc -O -I. -c -o jcprepct.o jcprepct.c

nios2-elf-gcc -O -I. -c -o jccoefct.o jccoefct.c

nios2-elf-gcc -O -I. -c -o jccolor.o jccolor.c

nios2-elf-gcc -O -I. -c -o jcsample.o jcsample.c

nios2-elf-gcc -O -I. -c -o jchuff.o jchuff.c

nios2-elf-gcc -O -I. -c -o jcphuff.o jcphuff.c

nios2-elf-gcc -O -I. -c -o jcdctmgr.o jcdctmgr.c

nios2-elf-gcc -O -I. -c -o jfdctfst.o jfdctfst.c

nios2-elf-gcc -O -I. -c -o jfdctflt.o jfdctflt.c

nios2-elf-gcc -O -I. -c -o jfdctint.o jfdctint.c

nios2-elf-gcc -O -I. -c -o jdapimin.o jdapimin.c

nios2-elf-gcc -O -I. -c -o jdapistd.o jdapistd.c

nios2-elf-gcc -O -I. -c -o jdtrans.o jdtrans.c

nios2-elf-gcc -O -I. -c -o jdatasrc.o jdatasrc.c

nios2-elf-gcc -O -I. -c -o jdmaster.o jdmaster.c

nios2-elf-gcc -O -I. -c -o jdinput.o jdinput.c

nios2-elf-gcc -O -I. -c -o jdmarker.o jdmarker.c

nios2-elf-gcc -O -I. -c -o jdhuff.o jdhuff.c

nios2-elf-gcc -O -I. -c -o jdphuff.o jdphuff.c

nios2-elf-gcc -O -I. -c -o jdmainct.o jdmainct.c

nios2-elf-gcc -O -I. -c -o jdcoefct.o jdcoefct.c

nios2-elf-gcc -O -I. -c -o jdpostct.o jdpostct.c

nios2-elf-gcc -O -I. -c -o jddctmgr.o jddctmgr.c

nios2-elf-gcc -O -I. -c -o jidctfst.o jidctfst.c

nios2-elf-gcc -O -I. -c -o jidctflt.o jidctflt.c

nios2-elf-gcc -O -I. -c -o jidctint.o jidctint.c

nios2-elf-gcc -O -I. -c -o jidctred.o jidctred.c

nios2-elf-gcc -O -I. -c -o jdsample.o jdsample.c

nios2-elf-gcc -O -I. -c -o jdcolor.o jdcolor.c

nios2-elf-gcc -O -I. -c -o jquant1.o jquant1.c

nios2-elf-gcc -O -I. -c -o jquant2.o jquant2.c

nios2-elf-gcc -O -I. -c -o jdmerge.o jdmerge.c

nios2-elf-gcc -O -I. -c -o jcomapi.o jcomapi.c

nios2-elf-gcc -O -I. -c -o jutils.o jutils.c

nios2-elf-gcc -O -I. -c -o jerror.o jerror.c

nios2-elf-gcc -O -I. -c -o jmemmgr.o jmemmgr.c

nios2-elf-gcc -O -I. -c -o jmemnobs.o jmemnobs.c

rm -f libjpeg.a

ar rc libjpeg.a jcapimin.o jcapistd.o jctrans.o jcparam.o jdatadst.o jcinit.o j

cmaster.o jcmarker.o jcmainct.o jcprepct.o jccoefct.o jccolor.o jcsample.o jchuf

f.o jcphuff.o jcdctmgr.o jfdctfst.o jfdctflt.o jfdctint.o jdapimin.o jdapistd.o

jdtrans.o jdatasrc.o jdmaster.o jdinput.o jdmarker.o jdhuff.o jdphuff.o jdmainct

.o jdcoefct.o jdpostct.o jddctmgr.o jidctfst.o jidctflt.o jidctint.o jidctred.o

jdsample.o jdcolor.o jquant1.o jquant2.o jdmerge.o jcomapi.o jutils.o jerror.o j

memmgr.o jmemnobs.o

ranlib libjpeg.a

nios2-elf-gcc -O -I. -c -o cjpeg.o cjpeg.c

nios2-elf-gcc -O -I. -c -o rdppm.o rdppm.c

nios2-elf-gcc -O -I. -c -o rdgif.o rdgif.c

nios2-elf-gcc -O -I. -c -o rdtarga.o rdtarga.c

nios2-elf-gcc -O -I. -c -o rdrle.o rdrle.c

nios2-elf-gcc -O -I. -c -o rdbmp.o rdbmp.c

nios2-elf-gcc -O -I. -c -o rdswitch.o rdswitch.c

nios2-elf-gcc -O -I. -c -o cdjpeg.o cdjpeg.c

nios2-elf-gcc -o cjpeg cjpeg.o rdppm.o rdgif.o rdtarga.o rdrle.o rdbmp.o rdswit

ch.o cdjpeg.o libjpeg.a

/cygdrive/c/altera/kits/nios2/bin/nios2-gnutools/H-i686-pc-cygwin/bin/../lib/gcc

-lib/nios2-elf/3.3.3/../../../../nios2-elf/lib/libc.a(closer.o): In function `_c

lose_r&#39;:

closer.o(.text+0x20): warning: _close is not implemented and will always fail

/cygdrive/c/altera/kits/nios2/bin/nios2-gnutools/H-i686-pc-cygwin/bin/../lib/gcc

-lib/nios2-elf/3.3.3/../../../../nios2-elf/lib/libc.a(fstatr.o): In function `_f

stat_r&#39;:

fstatr.o(.text+0x28): warning: _fstat is not implemented and will always fail

/cygdrive/c/altera/kits/nios2/bin/nios2-gnutools/H-i686-pc-cygwin/bin/../lib/gcc

-lib/nios2-elf/3.3.3/../../../../nios2-elf/lib/libc.a(makebuf.o): In function `_

_smakebuf&#39;:

makebuf.o(.text+0xf8): warning: isatty is not implemented and will always fail

/cygdrive/c/altera/kits/nios2/bin/nios2-gnutools/H-i686-pc-cygwin/bin/../lib/gcc

-lib/nios2-elf/3.3.3/../../../../nios2-elf/lib/libc.a(lseekr.o): In function `_l

seek_r&#39;:

lseekr.o(.text+0x2c): warning: _lseek is not implemented and will always fail

/cygdrive/c/altera/kits/nios2/bin/nios2-gnutools/H-i686-pc-cygwin/bin/../lib/gcc

-lib/nios2-elf/3.3.3/../../../../nios2-elf/lib/libc.a(openr.o): In function `_op

en_r&#39;:

openr.o(.text+0x2c): warning: _open is not implemented and will always fail

/cygdrive/c/altera/kits/nios2/bin/nios2-gnutools/H-i686-pc-cygwin/bin/../lib/gcc

-lib/nios2-elf/3.3.3/../../../../nios2-elf/lib/libc.a(readr.o): In function `_re

ad_r&#39;:

readr.o(.text+0x2c): warning: _read is not implemented and will always fail

/cygdrive/c/altera/kits/nios2/bin/nios2-gnutools/H-i686-pc-cygwin/bin/../lib/gcc

-lib/nios2-elf/3.3.3/../../../../nios2-elf/lib/libc.a(writer.o): In function `_w

rite_r&#39;:

writer.o(.text+0x2c): warning: _write is not implemented and will always fail

/cygdrive/c/altera/kits/nios2/bin/nios2-gnutools/H-i686-pc-cygwin/bin/../lib/gcc

-lib/nios2-elf/3.3.3/../../../../nios2-elf/lib/libc.a(getenv_r.o): In function `

_findenv_r&#39;:

getenv_r.o(.text+0x34): undefined reference to `__env_lock&#39;

getenv_r.o(.text+0xb8): undefined reference to `__env_unlock&#39;

getenv_r.o(.text+0x100): undefined reference to `__env_unlock&#39;

collect2: ld returned 1 exit status

nios2-elf-make: *** [cjpeg] Error 1[/b]

--- Quote End ---

How do I regenerate libc.a? Is that even where the problem is? Is there another way to compile the jpeg source for the NIOS II Linux distro?

MORE INFO:

JPEG source version : 6b

gcc version: 2.95.3-5 (cygwin special)

nios2-elf-gcc version: 3.3.3 (Altera Nios II 1.0 b316) [/b]

--- Quote End ---

it looks like the library compiled with the PC compiler. I think you&#39;ll need to force the cc & library tools to be the nios2-elf ones.

Adrian

Ok, I see now that you used ./configure which configued for a PC version but then changed the generated makefile.

The library looks like it built ok and it&#39;s only the sample applications that don&#39;t work, they&#39;re using filing system functions which don&#39;t look like they&#39;re implemented in the nios library. If the jpeg library has been built with support for these functions then you&#39;ll need to disable that support. Good place to look is in jconfig.h to see what options are enabled when the library is built.

All you do is use the nios functions to read the file into memory, then use:

jpeg_create_decompress

jpeg_read_header

jpeg_start_decompress

[loop] jpeg_read_scanlines

jpeg_finish_decompress

jpeg_destroy_compress

you&#39;ll need to create a source manager to handle the requests from the jpeg decompressor for memory, but it&#39;s all very trivial. I think there&#39;s a basic sample somewhere and you should be able to figure out exactly what you need.

Adrian

you might also be better off using makefile.ansi as a starting point rather than auto-configuring from the host system.

Adrian

Hi Adrian,

Thaks for the help.

You mention a sample,<div class='quotetop'>QUOTE </div>

--- Quote Start ---

you&#39;ll need to create a source manager to handle the requests from the jpeg decompressor for memory, but it&#39;s all very trivial. I think there&#39;s a basic sample somewhere and you should be able to figure out exactly what you need.[/b]

--- Quote End ---

Is it a NIOS II sample or one of the JPEG samples. I&#39;d like to get the decoder to work and then perhaps try to implement a hardware DCT/inverse DCT.

Thanks again.

Jan Hendrik

--- Quote Start ---

originally posted by janhendrik@Aug 20 2004, 06:34 AM

hi adrian,

thaks for the help.

you mention a sample,<div class='quotetop'>quote

--- quote end ---

--- quote start ---

you&#39;ll need to create a source manager to handle the requests from the jpeg decompressor for memory, but it&#39;s all very trivial. i think there&#39;s a basic sample somewhere and you should be able to figure out exactly what you need.

--- Quote End ---

Is it a NIOS II sample or one of the JPEG samples. I&#39;d like to get the decoder to work and then perhaps try to implement a hardware DCT/inverse DCT.

Thanks again.

Jan Hendrik [/b]

--- Quote End ---

jpeg sample, but as far as I can remember with the library you can get away with the only "dependancy" being malloc/free.

I posted the commands that I have here (on a windows app) that decodes an image, I can&#39;t post the whole code because although I wrote it, it&#39;s not mine to post - but the code is not that much larger than the outline I posted before, if you read the documentation with the library you&#39;ll be able to figure it out.

Although my code here is for windows, as mentioned before I&#39;ve implemented this before on other non wintel systems without any problems. I&#39;ve got some of my own code possibly at home, if I can find it and dig it out then I&#39;ll post it - don&#39;t hold your breath though, it&#39;s most likely on one of my many deathstar drivers.

Adrian