问题
I have an MFC application. I have audio data stored in wav format. My question is, how can I encode an array of those bytes into an ogg vorbis format?
I found an example:
http://svn.xiph.org/trunk/vorbis/examples/encoder_example.c
and tried to use it in my application. First, I tried to add it to my project and compile. I had to add files included in the above file, so I found them in the libraries libvorbis and libogg. And still I cannot link:
Error 4 error LNK2019: unresolved external symbol _oggpack_writetrunc referenced in function _vorbis_bitrate_addblock bitrate.obj
Error 2 error LNK2019: unresolved external symbol _oggpack_write referenced in function _vorbis_bitrate_addblock bitrate.obj
Error 8 error LNK2019: unresolved external symbol _oggpack_read referenced in function _vorbis_staticbook_unpack codebook.obj
Error 10 error LNK2019: unresolved external symbol _oggpack_look referenced in function _decode_packed_entry_number codebook.obj
Error 7 error LNK2019: unresolved external symbol _oggpack_get_buffer referenced in function _vorbis_bitrate_flushpacket bitrate.obj
Error 5 error LNK2019: unresolved external symbol _oggpack_bytes referenced in function _vorbis_bitrate_addblock bitrate.obj
Error 9 error LNK2019: unresolved external symbol _oggpack_adv referenced in function _decode_packed_entry_number codebook.obj
Error 3 error LNK2001: unresolved external symbol _oggpack_write codebook.obj
Error 6 error LNK2001: unresolved external symbol _oggpack_bytes codebook.obj
I could not find where those guys are defined. I would appreciate any help.
Thanks.
回答1:
libsndfile is a popular library for doing what you want.
As for your link errors, it looks like you're linking with code that's dependent on a library that defines symbols starting with "oggpack," so you'd need to include that library in your link. But using libsndfile may be a better solution.
回答2:
I had some luck with: gcc program.c -lvorbis -o program
I wish vorbis would make small working exampe that would work. I tried all there example and they are not very good.
回答3:
gcc p.c -lvorbisenc -o p
or
gcc p.c -lvorbis -lvorbisenc -o p
But I have not checked if it will encode a wav yet.
来源：https://stackoverflow.com/questions/5186558/problem-encoding-wav-into-ogg-vorbis