search for: mapping_type

Displaying 9 results from an estimated 9 matches for "mapping_type".

2016 May 21
2
[PATCH] Add Functions to Create Ambisonic Multistream Encoder
...it less confusing. 2) After discussing with Tim, the conclusion is that we should use mapping family 254 in the short term. We can switch to mapping family 2 when standardization is a bit more advanced. 3) Unless it causes problems in the existing code, it seems like family 254 should already set mapping_type=MAPPING_TYPE_AMBISONICS. From my understanding, it would not change the code behaviour, but would make it clearer what the new type is for (or did I miss something?). Cheers, Jean-Marc On 05/20/2016 07:36 PM, Michael Graczyk wrote: > > On May 20, 2016 18:32, "Jean-Marc Valin" &...
2016 May 24
3
[PATCH] Add Functions to Create Ambisonic Multistream Encoder
...is that we should use >> mapping family 254 in the short term. We can switch to mapping family 2 >> when standardization is a bit more advanced. > Sounds good, done. > >> 3) Unless it causes problems in the existing code, it seems like family >> 254 should already set mapping_type=MAPPING_TYPE_AMBISONICS. From my >> understanding, it would not change the code behaviour, but would make it >> clearer what the new type is for (or did I miss something?). > Done, I think. The patch still doesn't change behavior, but it now > sets the member OpusMSEncoder.map...
2016 May 23
0
[PATCH] Add Functions to Create Ambisonic Multistream Encoder
...with Tim, the conclusion is that we should use > mapping family 254 in the short term. We can switch to mapping family 2 > when standardization is a bit more advanced. Sounds good, done. > 3) Unless it causes problems in the existing code, it seems like family > 254 should already set mapping_type=MAPPING_TYPE_AMBISONICS. From my > understanding, it would not change the code behaviour, but would make it > clearer what the new type is for (or did I miss something?). Done, I think. The patch still doesn't change behavior, but it now sets the member OpusMSEncoder.mapping_type to MAPPI...
2017 Apr 10
2
[Patch] Non-diegetic support for channel mapping 254
...have: + nb_streams = acn_channels + nondiegetic_channels; + nb_coupled_streams = nondiegetic_channels != 0; Done 4) About this change: - if (!validate_layout(&st->layout) || !validate_encoder_layout(&st->layout)) + if (!validate_layout(&st->layout) || + (mapping_type == MAPPING_TYPE_SURROUND && + !validate_encoder_layout(&st->layout))) Is there nothing to validate for ambisonics? We do this when determine the (n+1)^2 + 2j listed above, but we can validate that here as well. 5) For opus_multistream_surround_encoder_init(), the same comme...
2017 Apr 07
2
[Patch] Non-diegetic support for channel mapping 254
Hello all, Attached is a proposed patch for Opus that allows support for encoding non-diegetic stereo audio as a coupled stream for use with channel mapping 254. It also rejects channel counts that are not (n+1)^2 + 2j, where n is 0 to 14 and j is either 0 or 1 (See IETF public draft doc attached for clarification). Please let me know any suggestions / concerns / comments. Thank you for your
2017 Apr 07
0
[Patch] Non-diegetic support for channel mapping 254
...ot just have: + nb_streams = acn_channels + nondiegetic_channels; + nb_coupled_streams = nondiegetic_channels != 0; 4) About this change: - if (!validate_layout(&st->layout) || !validate_encoder_layout(&st->layout)) + if (!validate_layout(&st->layout) || + (mapping_type == MAPPING_TYPE_SURROUND && + !validate_encoder_layout(&st->layout))) Is there nothing to validate for ambisonics? 5) For opus_multistream_surround_encoder_init(), the same comments as for opus_multistream_surround_encoder_get_size() maybe some code can be shared (if possible...
2017 Apr 24
0
[Patch] Non-diegetic support for channel mapping 254
...nb_coupled_streams = nondiegetic_channels != 0; > > Done > > > 4) About this change: > - if (!validate_layout(&st->layout) || > !validate_encoder_layout(&st->layout)) > + if (!validate_layout(&st->layout) || > + (mapping_type == MAPPING_TYPE_SURROUND && > + !validate_encoder_layout(&st->layout))) > > Is there nothing to validate for ambisonics? > > We do this when determine the (n+1)^2 + 2j listed above, but we can > validate that here as well. > > > 5) Fo...
2016 May 06
5
[PATCH] Add Functions to Create Ambisonic Multistream Encoder
Here is the modified patch. I added a flag to configure.ac which is set to 0 to disable ambisonics, and 1 to enable it. Right now the implementation simply creates a surround encoder with N uncoupled streams. Thanks, Michael Graczyk -------------- next part -------------- An HTML attachment was scrubbed... URL:
2017 Apr 25
2
[Patch] Non-diegetic support for channel mapping 254
...nnels != 0; > > > > Done > > > > > > 4) About this change: > > - if (!validate_layout(&st->layout) || > > !validate_encoder_layout(&st->layout)) > > + if (!validate_layout(&st->layout) || > > + (mapping_type == MAPPING_TYPE_SURROUND && > > + !validate_encoder_layout(&st->layout))) > > > > Is there nothing to validate for ambisonics? > > > > We do this when determine the (n+1)^2 + 2j listed above, but we can > > validate that here as well....