search for: lpiga

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2008 Mar 25
0
No subject
...from what I can conclude, the OpenMP implementation can be as good as the pthread. Therefore maybe it is worth to work on a OpenMP implementation because of the easiness of code maintenance. What you guys think ? Cheers, Felipe On Mon, Jul 14, 2008 at 1:04 AM, Leonardo de Paula Rosa Piga <lpiga at terra.com.br> wrote: > I forgot to send the link for the last graph > (http://lampiao.lsc.ic.unicamp.br/~piga/gsoc_2008/systime.png) > > On Mon, Jul 14, 2008 at 1:03 AM, Leonardo de Paula Rosa Piga > <lpiga at terra.com.br> wrote: >> >> Hi Timothy, below some...
2007 Jul 12
1
PostProcessingLevel field of PB_INSTANCE
What is the PostProcessingLevel field of PB_INSTANCE? When is it used? It is used for all Theora's video or it is just for legacy support with VP3? Thanks -- Leonardo de Paula Rosa Piga Undergraduate Computer Engineering Student LSC - IC - UNICAMP http://www.students.ic.unicamp.br/~ra033956
2008 Apr 10
2
Delay occurred when the makefile change
I have tried to add a plunging to the "libtheora-1.0beta2" (network bandwidth measuring component was added) and Got it success for some far now the problem is when it is added the encoding process get extremely slow (around 20 seconds delay). I think that the problem is with my modified Makefile (some flag may have missed). the following is my modified Makefile.am which is in the
2007 May 07
2
Theora running on FPGA
Great news! Theora is running on FPGA. After almost a year of a great effort we have Theora validated on FPGA. Now I will try to integrated the hardware with a video controller to see the video! I completely implemented the ExpandBlock, CopyRecon, LoopFilter and UpdateUMVBorder functions. The ReconRefFrames function was partially implemented and the part before will run on a software compiled
2008 Jul 07
2
GSoC - Theora multithread decoder
Hi all, I apologize to not keep you up to date to what is going on with my project. Portavales has worked in a desk behind me and when we go to take coffee we talk about the project. Second I didn't know we have to discuss weekly, it was my fault. I should have read the rules. Sorry. At the first month, I studied the code and the Theora Beta implementation. The code is completely different
2008 Apr 23
1
Theora got extreamly slow (Makefile.am was changed)
I have tried to add a plunging to the "libtheora-1.0beta2" (network bandwidth measuring component was added) and Got it success for some far now the problem is when it is added the encoding process get extremely slow (around 20 seconds delay). I think that the problem is with my modified Makefile (some flag may have missed). the following is my modified Makefile.am which is in the
2006 Jun 06
0
Question about PB_INSTANCE fields
I'm trying to implement the dct_decoder's LoopFilter function in a FPGA. I need to know what is the maximum memory allocation size which display_fragment and recon_pixel_index_table points. These are fields of PB_INSTANCE structure that is declared in the codec_internal.h Thank you =========================== Leonardo de Paula Rosa Piga Computer Engineering Student Universidade
2006 Dec 20
1
SVN Theora FPGA
Hi, I did some improvements and some bug corrections in Theora FPGA code. I'd like to post this new version in the SVN. How can I do that? Thanks -- Leonardo de Paula Rosa Piga Undergraduate Computer Engineering Student LSC - IC - UNICAMP http://www.students.ic.unicamp.br/~ra033956
2007 Aug 25
1
Theora playing on a FPGA
Hi all, Great news. On Thursday I finally play a video on FPGA. As I said the implementation is using the NIOS II processor. Andr? Costa is hard working to use the LEON processor. The video resolution is 96x80, because we have some FPGA internal memory constraints. I will try to use external memory to make possible decode a video of at least 320x240. The result can be see here:
2007 Aug 25
1
Theora vs MPEG vs H264
Hi all, I have to compare the theora codec with MPEG and H264. I was googling and I found that the PSNR is a common used parameter. How can I do this with Theora? Thanks -- Leonardo de Paula Rosa Piga Undergraduate Computer Engineering Student LSC - IC - UNICAMP http://www.students.ic.unicamp.br/~ra033956
2008 Aug 15
1
GSoC - Theora multithread decoder
Hi, This email is to inform what I have been doing since the mid-term. After the mid-term I worked on a pipeline implementation with OpenMP. As I said before I did a pipelined implementation of these functions: (c_dec_dc_unpredict_mcu_plane + oc_dec_frags_recon_mcu_plane) and (oc_state_loop_filter_frag_rows + oc_state_borders_fill_rows) as explained in my previous email. But the results were
2008 Feb 28
1
Multi-thread Theora Decoder
Hi all, Does Theora Community have an interest in a multi-thread decoder implementation? I'm starting to work with multi-thread and I thought that Theora Decoder is a good choice for me, because I had been working with it in a FPGA implementation and I have experience with the library. I'm thinking in working with LoopFilter at first. Do you think I could start with it or there is a