similar to: Problems on TI DSP c6701

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

quite some speed improvement indeed. attached the updated patch to apply to svn/trunk. j -------------- next part -------------- A non-text attachment was scrubbed... Name: theora-mmx.patch.gz Type: application/x-gzip Size: 8648 bytes Desc: not available Url : http://lists.xiph.org/pipermail/theora-dev/attachments/20040824/5a5f2731/theora-mmx.patch-0001.bin

Hi all, What are the steps to get Vorbis running on a TI C6713? I know I should use the floating point code, but am unsure what files I should compile in Code Composer Studio. Specificially, I am using the TMS320C6713 to receive Vorbis through a manufactured UART Daughter Card and output raw audio through its audio jack. Thanks for your help, Matt Hutchinson -- Matt Hutchinson Rice University

Hi all, Sorry for the somewhat off-topic post, but I haven't come up with a good answer to this question yet. MDS did a port of Vorbis to the Philips TriMedia processors. Others have taken that port and extended/fixed it a bit. We provide the code to anyone who asks, but at this point we think it would be better off in some sort of public repository so that patches can be maintained,

Hello, I'd like to develop a codec for the Ogg Vorbis algorithm on a DSP (controller?) hardware platform. We've got 2 (3) main applications: 1) the codec should be used for 2 channel simultaneous message recording/playback on flash EPROM. 2) the codec should be used for streaming audio over IP or Ethernet/intranet networks. 3) for large system, the PC should serve as a storing device We

Dear All, As i have understood it , the Huffman codebook uses a huffman code present in the bitstream ( lets us say it is decoding a floor 1 Y value using the specifed codebook number ) to walk through the huffman code book tree till it hits a leaf node which is nothing but the entry number. If we consider our floor 1 Y value example , this entry number is directly being used as the Y value.

On Wed, Mar 31, 2004 at 10:51:20AM +0300, George Bratis wrote: > I think that if you want to use a low cost dsp you must rewrite ti in > assebmly. > In our tests you will need 4-5 times more MIPS just compiling C code. This was also our experience porting the Tremor vorbis decoder to a TI dsp. The vendor toolchain is useless; someone really needs to pay cygnus to port gcc. -r ---

Hi I'm evaluating Theora for a video communication system and would like some info as to what the following struct members (from the theora_info structure) do and what values one should pass to them: If there is some documentation somewhere that I've missed, please direct me to it. ===== Extract from theora.h ===== int quality; int quick_p; /* quick encode/decode */

(i hope this is correct m.list) Hi, there is a small compiling problem for mingw when compiling on libogg.. in include/ogg/os_types.h : ogg_int64_t, ogg_int32_t, etc are defined correctly on cygwin and MSVC/Borland but not on mingw... i have attached a patch that will fix this problem (i hope it attaches correctly) thx, Nehal --- os_types.h.old Fri Jul 19 02:25:52 2002 +++ os_types.h Tue

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

George Bratis wrote: >Speex now runs on a fixed point DSP with relative little MIPS. >The main problem is that you must rewrite the hole code in assembly. > >George > > Why must you write it in assembly? What is wrong with running the C code on a DSP? Sure you can improve the efficiency if you use assembly, but why do you say it is *necessary*? Regards, Steve --- >8

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

Hello all, I have recently ported Vorbis to a Texas instruments DSP (TMS320C5510), The problem I have is that it is not decoding the audio in real time( about 50% of real time). Could any one give me a clue in which area I could start to optimize the code. Regards Kevin <p><p><p>--- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage:

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

Hello all Can anyone point me to some form of description for the fields in the following structures : 1/ vorbis_dsp_state 2/ vorbis_block Thank you. regards ~previr _____________________________________________________________ Previr Rangroo STMicroelectronics Associate Systems Lab Engineer Plot No. 2 & 3, Audio Competence Center Sector 16A,

Hello all Can anyone point me to some form of description for the fields in the following structures : 1/ vorbis_dsp_state 2/ vorbis_block Thank you. regards ~previr _____________________________________________________________ Previr Rangroo STMicroelectronics Associate Systems Lab Engineer Plot No. 2 & 3, Audio Competence Center Sector 16A,

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

We've made a little change that changed the output of vorbis is there a way to check the accuracy of the output against the original output? I also asked this question in the irc ... Thanks, Tal.

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 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