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* conv_acc: Our code requires SSSE3, not just SSE3Harald Welte2017-11-171-12/+12
| | | | | | | | | | | | | | | The accelerated convolutional decoder uses SSSE3 instructions such as PSIGNW (via _mm_sign_epi16) which go beyond what SSE3 offers. So let's make sure we use the right compiler flag (-mssse3) and also the right runtime check. Without this patch, we would use illegal instructions e.g. on Opteron Gen3 such as Opteron 2427, which are also used as build.opensuse.org build hosts (build31 through build36) where we wouldn't pass "make check" as a result. Change-Id: I2754164384109f2821fd98ffb48f625893f2923d Fixes: OS#2386
* Fix/Update copyright notices; Add SPDX annotationHarald Welte2017-11-131-0/+2
| | | | | | | | Let's fix some erroneous/accidential references to wrong license, update copyright information where applicable and introduce a SPDX-License-Identifier to all files. Change-Id: I39af26c6aaaf5c926966391f6565fc5936be21af
* doxygen: unify use of \file across the boardNeels Hofmeyr2017-06-231-2/+2
| | | | | | | | | | | | | | | | | Considering the various styles and implications found in the sources, edit scores of files to follow the same API doc guidelines around the doxygen grouping and the \file tag. Many files now show a short description in the generated API doc that was so far only available as C comment. The guidelines and reasoning behind it is documented at https://osmocom.org/projects/cellular-infrastructure/wiki/Guidelines_for_API_documentation In some instances, remove file comments and add to the corresponding group instead, to be shared among several files (e.g. bitvec). Change-Id: Ifa70e77e90462b5eb2b0457c70fd25275910c72b
* core/conv/conv_acc.c: use static allocation for trellisVadim Yanitskiy2017-06-191-27/+23
| | | | | | | | | | | Allocation of a new memory is an expensive operation, which takes place when it's initially unknown, how much memory will we need, or in order to decrease total memory usage. The trellis struct wasn't require dynamic allocation itself, so let's allocate one statically inside the vdecoder structure. Change-Id: Ib8e448823ca5548a05a45824b0b1c06743dfe5a4
* core/conv/conv_acc.c: use static allocation for vdecoderVadim Yanitskiy2017-06-191-23/+19
| | | | | | | | | | | Allocation of a new memory is an expensive operation, which takes place when it's initially unknown, how much memory will we need, or in order to decrease total memory usage. The vdecoder struct wasn't require dynamic allocation itself, so let's use static allocation in order to increase performance. Change-Id: Id1b140d3cb61db7352dcfc217a8fc36091e945ab
* core/conv/conv_acc.c: delete reset_decoder()Vadim Yanitskiy2017-06-191-20/+13
| | | | | | | | | | | | | | | Currently this implementation exposes nothing than osmo_conv_decode_acc(), so it wasn't possible to call reset_decoder() from outside. The method itself was used to initialize accumulated path metrics and the starting state of encoder. Now this code is moved to generate_trellis(). Moreover, setting accumulated path metrics inside existing loop is a bit faster that calling memset(). Change-Id: I8f17cebf468cf0106927ccee091cfb2896649cb2
* core/conv/conv_acc.c: drop unused structure memberVadim Yanitskiy2017-06-191-2/+0
| | | | Change-Id: I81f7c35abf424f501ca53d6984c0d56f7936984b
* core/conv: update description headers for conv_acc_*Vadim Yanitskiy2017-06-191-1/+1
| | | | Change-Id: I00154776c8e7d346abcbaf9048ce04d9488bb458
* core/conv: use proper filenamesVadim Yanitskiy2017-06-191-0/+728
We already have generic convolutional transcoding implementation written by Sylvain Munaut and named 'conv.c', so 'viterbi_*' names looked a bit confusing. Let's use a single naming scheme for Viterbi related code. Change-Id: I61062a8d1fbf5f5fc85b4fac58dc4e9fa8b5ef90
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