mad-dev July 2007

mad-dev@lists.mars.org

4 participants
3 discussions

test-bitstreams
by Tim Dylla 30 Jul '07

30 Jul '07

Hi list, since I'm doing final tests on my mp3-decoder implementation for a Blackfin DSP, I'm searching for teststreams coming with a decoded reference. The original ISO/IEC/Fraunhofer-teststream package contains only the decoded reference of the compliance bitstream. But (as you certainly know) it doesn't test the whole functionality of MP3 (not even short blocks), and the decoder in this package is crap (limited compliance, far away from being a reference). I'm searching for more bitstreams in company with their decoded reference to avoid adding up deviance of the used Encoder to my test results. Has anyone some resource regarding this? I'm interested in MPEG1 and 2 - Layer III bitstreams. Thanks in advance, Tim

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Computation Speed
by Tim Dylla 23 Jul '07

23 Jul '07

Hello List, I'm new to this list, let me introduce myself. I'm working on my Diploma for Applied Informatics, I have to implement the MP3-Decoder for the Analog Devices BF-533 DSP. It's the the final testphase regarding accuracy, where MAD really convinces. Since I want to leave the needed MIPS of my Algorithm low, I had to make some compromise between Accuracy and Speed. Now I wonder: how much MIPS needs MAD? Say, for the x86-Version optimized for Accuracy? Has anyone measured this? Or is there a Webpage with all that info, and I was just dumb? :) Best Regards, Tim Dylla

2 2

compiling libmad in c++
by julien ricard 05 Jul '07

05 Jul '07

hi, how can I compile libmad using a c++ compiler? using g++ and -D__cplusplus gives errors. For example: $ g++ -c -D__cplusplus -DFPM_INTEL decoder.c decoder.c: In function 'void mad_decoder_init(mad_decoder*, void*, mad_flow (*)(void*, mad_stream*), mad_flow (*)(void*, const mad_header*), mad_flow (*)(void*, const mad_stream*, mad_frame*), mad_flow (*)(void*, const mad_header*, mad_pcm*), mad_flow (*)(void*, mad_stream*, mad_frame*), mad_flow (*)(void*, void*, unsigned int*))': decoder.c:76: error: invalid conversion from 'int' to 'mad_decoder_mode' decoder.c: In function 'mad_flow error_default(void*, mad_stream*, mad_frame*)': decoder.c:299: error: invalid conversion from 'void*' to 'int*' decoder.c: In function 'int mad_decoder_run(mad_decoder*, mad_decoder_mode)': decoder.c:553: error: invalid conversion from 'void*' to 'mad_decoder::<anonymous struct>*' thanks jul

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mad-dev July 2007