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Hi all, I have ported the g729 code on c54x DSK, but Its not able to process the test vectors by ITU correctly.. The same code is running correctly on Windows platform. I suppose there is some problem with the data types.. Have somebody worked on this? Regards, seema. |
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g729 codec
Started by ●August 12, 2002
Reply by ●August 13, 20022002-08-13
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Thanks bobby and DongWon... I have made change in the file "typedef.h" to support data types world16 and word32 as: typedef long Word32 ; typedef int Word16 ; typedef int Flag ; the program in running properly, but the results tested for the test vector "ALGTHM.IN" file differs from the file "ALGTHM.BIT" as given by ITU. When I run the same code on pentium processor, it gives the correct result for the same test vector. Please guide me regarding this problem. Thanks, --seema. --- In c54x@y..., "seemaphalke" <seemaphalke@y...> wrote: > Hi all, > > I have ported the g729 code on c54x DSK, but Its not able to process > the test vectors by ITU correctly.. > The same code is running correctly on Windows platform. > I suppose there is some problem with the data types.. > > Have somebody worked on this? > Regards, > seema. |
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Reply by ●August 16, 20022002-08-16
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Actually I ever find this problem when I run ADPCM source code from SUN microsystem, This source code works well in unix platform, but not in DSP This is actually because of the different data type length. int in DSP is 16 bit wide, and in unix is 32 bit wide. Eventough in that source code using data type short, that same as in unix 16 bit, still that program run incorrectly, and I found that in left shift and than right shift like this, ((dqm << 7) >> exp) if when dqm left after shift more than 16 bit wide, in unix it will promote to int that has 32 bit long, but in DSP itu will still 16 bit wide, this make this code truncated. I fixed it using ((long)dqm << 7) >> exp And works well But for your problem I'm not sure that was the problem, because my friend using source code G.729 from ITU-T works well Sorry if I'm not helping you at all, and please correct me if I'm wrong Thank's Life should be a wow, shine and glow..... On Tue, 13 Aug 2002, seemaphalke wrote: > Thanks bobby and DongWon... > > I have made change in the file "typedef.h" to support > data types world16 and word32 as: > > typedef long Word32 ; > typedef int Word16 ; > typedef int Flag ; > the program in running properly, but the results > tested for the test vector "ALGTHM.IN" file differs > from the file "ALGTHM.BIT" as given by ITU. > When I run the same code on pentium processor, it > gives the correct result for the same test vector. > > Please guide me regarding this problem. > Thanks, > --seema. > > --- In c54x@y..., "seemaphalke" <seemaphalke@y...> wrote: > > Hi all, > > > > I have ported the g729 code on c54x DSK, but Its not able to > process > > the test vectors by ITU correctly.. > > The same code is running correctly on Windows platform. > > I suppose there is some problem with the data types.. > > > > Have somebody worked on this? > > > > > > Regards, > > seema. > > _____________________________________ > Note: If you do a simple "reply" with your email client, only the author of this message will receive your answer. You need to do a "reply all" if you want your answer to be distributed to the entire group. > > _____________________________________ > About this discussion group: > > To Join: Send an email to > > To Post: Send an email to > > To Leave: Send an email to > > Archives: http://www.yahoogroups.com/group/c54x > > Other Groups: http://www.dsprelated.com > ">http://docs.yahoo.com/info/terms/ |
