I will try rebuilding the ffmpeg dll's from scratch after downloading
the code again.  Perhaps setting a asm int 3's inside of avcodec dll
to see if I can see what is going on.

Thanks for the help.
-- Rich


From: richard winterton <[email protected]>
Date: Thu, Jul 9, 2009 at 5:14 PM
Subject: Re: [chromium-dev] Re: Chromium HTML 5 Integration using avcodec.dlls


Yes the name of the dll is avcodec-52.dll as you suggested.  But one
think I did notice is that the build left the other dependent dll's
unlabeled such as the avutil-.dll  There isn't a version tag from the
build that I have.  I got the source from the suggested site but
perhaps I left out a step or the the ./configure parameters weren't
right and the version isn't set up correctly.  (as meantioned I did a
disabling of mmx to get it to compile).  I will rebuild ffmpeg and see
if I get the versioning and test the instructions you have set up
again.

So not to waste alot of your time do you know why the version
information didn't get placed in the util dll?  If I rename the
avutil-.dll to avutil-52.dll Chromium complains it can't find
avutil-.dll so I know the avcodec-52.dll is being loaded.

Thanks for your help,
Rich

On Thu, Jul 9, 2009 at 4:22 PM, Alpha Lam<[email protected]> wrote:
> Also make sure the filename is correct, it is avcodec-52.dll.
>
> Alpha
>
>
> 2009/7/9 Andrew Scherkus <[email protected]>
>>
>> Before we jump into debugging, where did you get your FFmpeg source code?
>>
>> The version and building instructions we use are documented here:
>> http://src.chromium.org/viewvc/chrome/trunk/deps/third_party/ffmpeg/
>> http://src.chromium.org/viewvc/chrome/trunk/deps/third_party/mingw/
>>
>> Andrew
>>
>> On Thu, Jul 9, 2009 at 3:17 PM, richard winterton <[email protected]>
>> wrote:
>>>
>>> Hi,
>>>
>>> I periodically have issues loading the avcodec.dll.  I have build the
>>> avcodec.dll that contains the following H.264 exports:  (I did have to
>>> disable mmx which I am not sure why as of yet)
>>>
>>> 461  1CC 00174100 ff_h264_decode_nal
>>> 462  1CD 0018AD20 ff_h264_decode_picture_parameter_set
>>> 463  1CE 001742F0 ff_h264_decode_rbsp_trailing
>>> 464  1CF 00189280 ff_h264_decode_sei
>>> 465  1D0 00189F90 ff_h264_decode_seq_parameter_set
>>> 466  1D1 00194D40 ff_h264_find_frame_end
>>> 467  1D2 0018C150 ff_h264_free_context
>>> 468  1D3 00190270 ff_h264_idct8_add4_c
>>> 469  1D4 0018FA60 ff_h264_idct8_add_c = _pred4x4_down_left_rv40_nodown_c
>>> 470  1D5 0018FE40 ff_h264_idct8_dc_add_c
>>> 471  1D6 0018FEA0 ff_h264_idct_add16_c
>>> 472  1D7 00190090 ff_h264_idct_add16intra_c
>>> 473  1D8 00190310 ff_h264_idct_add8_c
>>> 474  1D9 0018F690 ff_h264_idct_add_c
>>> 475  1DA 0018FDE0 ff_h264_idct_dc_add_c
>>> 476  1DB 0018F7E0 ff_h264_lowres_idct_add_c
>>> 477  1DC 0018F930 ff_h264_lowres_idct_put_c
>>> 478  1DD 0052C620 ff_h264_lps_range
>>> 479  1DE 0052C8A0 ff_h264_lps_state
>>> 480  1DF 0052C520 ff_h264_mlps_state
>>> 481  1E0 0052C820 ff_h264_mps_state
>>> 482  1E1 002C30A0 ff_h264_norm_shift
>>> 483  1E2 00194AA0 ff_h264_pred_init
>>>
>>> which I think are the correct exports you would need for the decode.
>>> However when I go to the YouTube link provided to test the HTML 5
>>> integration of video I see, "You must have an HTML5 capable browser."
>>> (http://www.youtube.com/html5#) I have the appropriate dll's I believe
>>> in the Chrome.exe directory but now it doesn't seem to load the dll
>>> stepping through as far as I can in the debugger.
>>>
>>> Any help would be appreciated.  Thanks in advance,
>>> Rich
>>>
>>>
>>
>>
>> >>
>
>

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