similar to: problems building lowmem-branch of tremor

Hi, While following the developer mailing list, I came across "tremor-lowmem" version. I did some search of it in Xiph.org and "tremor" source code but wasn't able to find it. I would like to know if there is any separate thread for the "tremor-lowmem" version as we are working on the fixed point implementation of Vorbis code and we are looking forward for

Can anybody point me at any resources that would explain how to optimize mdct_backward for a cpu with a fused multiply-accumute unit? >From what I understand from responses to my older postings, Tremor's mdct_backward could be rewritten to take advantage of a muladd. My target machine can do either two-wide 32x32 + Accum(64) -> Accum(64) integer muladd or eight-wide 16x16 + Accum(32)

Hi all, I'm porting the Tremor code to an ARM platform. Unfortunately, we didn't use the low mem branch code for CPU performance consideration, and now I find the memory use in it is huge for the embedded system. After looking into the code, I found the header parse, especially, the codebook unpack part takes a lot of memory. Tremor decodes the codebooks to a cache to store

hi, could someone please apply these to Tremor svn? 0001-update_symbols.patch there are 3 public symbols in the headers, which are missing in the linker script and thus marked as private again. This causes issues for e.g. gstreamer (https://bugzilla.gnome.org/show_bug.cgi?id=616194). 0002-pkgconfig.patch this adds a pkg config file You probably also want to do something like Index:

Hi all, Does anyone have any experience porting libvorbis to platforms with small total memory sizes? Specifically, I'm trying to figure out if it's feasible to run Ogg Vorbis decoding on one of the PlayStation 3's SPU's -- secondary processors with only 256kb of local memory. It looks like out of the box the memory footprint of libvorbis is roughly: ~130k code ~60k static

All, I've consolidated our various svn branches of the fixed-point vorbis decoder (known as tremor or tremolo) into a single git repository, hoping that it facilitates review and merging of the various trees. In particular, android has a branch of Robin Watts' Tremolo code (arm-optimized tremor-lowmem) which I don't think anyone on the Xiph side has looked at. I used git-svn to

Hello, I'm interested in getting vorbis up and running on the PlayStation 2. I'm an official developer, not a ps2 linux developer, but the issues should be roughly the same. I've gotten the code to compile but our setup (intentionally) doesn't have libm so I'm seeing references to several double-precision math functions. Some of the issues I'm seeing: - As reported on

Hi vorbis experts! I'd like ot write application under Symbian that use theora as video codec & tremor as an audio one. I played at first with libogg & theora on PC, then successfully ported them both. Next I decided to port Tremor but I found that it use its own files from Ogg library. The API is almost identical, so I tried to bind the Tremor with upstream Ogg library (it actually

Hi All, I am planning to implement Ogg Vorbis Decoder on a 24 bit DSP. I have following doubts: 1) What is min and max bitrate? 2)What is max Audio Packet size ? 3)What is the max size of setup header? 4)Any idea how to start for making a 24Bit fixed point reference code? Shall I start with floating point or Tremor or Tremor Low Mem Version? 5) What window sizes in Ogg Vorbis are normally

Hi, I study electricity in the University of Applied Sciences of Western Switzerland and I just began my diploma work: an embedded Internet Radio Receiver. I want to use the Tremor Codec on a ARM7TDMI uc (Samsung S3C4510B). And I need to convert the decoded Vorbis signal in an I2S bus signal (clk, word-select, and data) with a CPLD (Xilinx SPARTAN II) It will be helpfull if someone can explain

Hi, Tis is kiran. I ve a project in which v have to cross compile the source code of ogg vorbis audio decoder onto EDB9302 ARM board.. Can u pls tell me the steps how to proceed or lead me to a source whr i can find the procedure... Thank u -------------- next part -------------- An HTML attachment was scrubbed... URL:

Hi there. Would some kind soul please refer me to instructions for building an arm-elf-gcc that'll compile the Tremor sources? (In particular, what sources to get and where, and what to build in what order.) I'm developing on Debian Woody i386, but I'll happily take whatever advice you can send my way. I'm no expert in the field of compiler building, but I can't seem to

Hi, I'm a Pocket PC developer and have created a audio translator application on this platform. I currently make use of an MP3 decoder engine, but due to heavy licensing fees I'm thinking of switching over to a patent free format. Vorbis presents the best approach. I read that tremor decoder has been especially optimized for embedded devices. I'd like to make use of this and

Attached several patches that I have been using to the tremor tree. Please review and apply as you see fit. Regards. -- O.S. -------------- next part -------------- A non-text attachment was scrubbed... Name: 0001-os.h-change-elif-_WIN32-to-elif-defined-_WIN32.patch Type: text/x-patch Size: 728 bytes Desc: not available URL:

As to tremor fixed-point implementation, i got several questions, and hopefully some one can help me out. Thanks a lot! 1. For DSP chips with small and limited memory, how much memory do we really need for saving all codebooks before we start to decode audio packets? Can the bit-rate give us some clues? Is there some simple guidelines for this? 2. For CRC error protection, it seems to me that

Hi all The inline asm in Revision 10571: /trunk/Tremor file asm_arm.h seems to be in x86 inline assembly format. is there a code which is compatible with ARM/Thumb C/C++ Compiler, RVCT2.2,along with libvorbis-1.1.2 release. regards anand -------------- next part -------------- An HTML attachment was scrubbed... URL:

Hi, Debian Project News drew my attention to an RFH http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=698378 for a crash in libvorbisidec (tremor) on ARM systems. I have been in contact with Daniel Kahn Gillmor proposing to try to help solve this crash on armel. Unfortunately Daniel hasn't been able to reproduce it recently. Can anyone shed any light on this crash or on how to reproduce

I spent a fair amount of time optimizing tremor for the PS2, mostly by using dual-pipe multiplies in the X[N]PRODnn and the window apply code. Then, just for kicks, I re-enabled _LOW_ACCURACY_ and lo and behold it was still substantially faster. I also got some gains out of tremor by changing the longs in cookbook and sharedbook to ogg_int32_t's like I did for vorbis. I think _LOW_ACCURACY_

Hi everybody: It's been a while, so here is the latest round of Status Updates from just about everybody in Xiph. The HTML version is at http://www.vorbis.com/ot/20030603.html Enjoy! <p>Ogg Traffic for Tuesday, June 3, 2003 Author: Carsten "Purple" Haese Contact: [1]carsten@xiph.org Date: June 3, 2003 Table of Contents 1 Status Updates

Hi vorbis experts! I'd like ot write application under Symbian that use theora as video codec & tremor as an audio one. I played at first with libogg & theora on PC, then successfully ported them both. Next I decided to port Tremor but I found that it use its own files from Ogg library. The API is almost identical, so I tried to bind the Tremor with upstream Ogg library (it actually