search for: opus_projection_decoder_cr

...st_creation_arguments(). > opus_projection_ambisonics_encoder_create() is intentionally called > with invalid arguments (initially, channels=0), which causes an error > to be returned and streams and coupled_streams are left uninitialized. > These uninitialized values are passed to > opus_projection_decoder_create(), which does not check that the > arguments are not too large before using them to attempt allocation of > a ridiculous amount of memory. Results may vary depending on the > uninitialized values of streams and coupled_streams. Valgrind reports > several uses of uninitialized valu...

Hello all, Attached is the initial proposed implementation for ch.mapping 253/3, based on the IETF proposal: https://tools.ietf.org/html/draft-ietf-codec-ambisonics-03 A brief overview of the patch, as it is slightly lengthy: After discussion with Jean-Marc, we determined that ch.253/3 will need the demixing matrix as part of the encoder/decoder struct stack and thus will require a new

...us_projection_ambisonics_encoder_create() is intentionally called >>> with invalid arguments (initially, channels=0), which causes an error >>> to be returned and streams and coupled_streams are left uninitialized. >>> These uninitialized values are passed to >>> opus_projection_decoder_create(), which does not check that the >>> arguments are not too large before using them to attempt allocation of >>> a ridiculous amount of memory. Results may vary depending on the >>> uninitialized values of streams and coupled_streams. Valgrind reports >>> se...

...st, an issue occurs in test_creation_arguments(). opus_projection_ambisonics_encoder_create() is intentionally called with invalid arguments (initially, channels=0), which causes an error to be returned and streams and coupled_streams are left uninitialized. These uninitialized values are passed to opus_projection_decoder_create(), which does not check that the arguments are not too large before using them to attempt allocation of a ridiculous amount of memory. Results may vary depending on the uninitialized values of streams and coupled_streams. Valgrind reports several uses of uninitialized values such as: Condit...

...s(). >> opus_projection_ambisonics_encoder_create() is intentionally called >> with invalid arguments (initially, channels=0), which causes an error >> to be returned and streams and coupled_streams are left uninitialized. >> These uninitialized values are passed to >> opus_projection_decoder_create(), which does not check that the >> arguments are not too large before using them to attempt allocation of >> a ridiculous amount of memory. Results may vary depending on the >> uninitialized values of streams and coupled_streams. Valgrind reports >> several uses of un...

Friendly ping for supporting ambisonics in opus-tools & opusfile Please LMK any ?s you might have. Cheers, Drew -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.xiph.org/pipermail/opus/attachments/20180410/fd4a3709/attachment-0001.html> -------------- next part -------------- A non-text attachment was scrubbed... Name:

...mixing matrix works). I think a slightly better approach is along the lines of the opus_head_parse_ext() I originally suggested, but just return a pointer into the user-supplied packet instead of copying the data. For the simple case where the user is just going to pass the data immediately to opus_projection_decoder_create(), they don't need a separate buffer at all, and the parameters to return the pointer and the matrix size can be NULLable to make them optional, so we can implement opus_head_parse() simply by calling opus_head_parse_ext() and passing NULL for them (eliminating all of the duplicate code...