FreeCalypso > hg > gsm-codec-lib

annotate libtwamr/prmno.c @ 477:4c9222d95647

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
libtwamr encoder: always emit frame->mode = mode; In the original implementation of amr_encode_frame(), the 'mode' member of the output struct was set to 0xFF if the output frame type is TX_NO_DATA. This design was made to mimic the mode field (16-bit word) being set to 0xFFFF (or -1) in 3GPP test sequence format - but nothing actually depends on this struct member being set in any way, and amr_frame_to_tseq() generates the needed 0xFFFF on its own, based on frame->type being equal to TX_NO_DATA. It is simpler and more efficient to always set frame->mode to the actual encoding mode in amr_encode_frame(), and this new behavior has already been documented in doc/AMR-library-API description in anticipation of the present change.
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 18 May 2024 22:30:42 +0000
parents f931e704adc5
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
254
f931e704adc5 libtwamr: bits and parameter packing
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 /*
f931e704adc5 libtwamr: bits and parameter packing
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2 * This module holds prmno[] and prmnofs[] tables that were
f931e704adc5 libtwamr: bits and parameter packing
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
3 * originally in bitno.tab in 3GPP reference source.
f931e704adc5 libtwamr: bits and parameter packing
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
4 */
f931e704adc5 libtwamr: bits and parameter packing
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
5
f931e704adc5 libtwamr: bits and parameter packing
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
6 #include "typedef.h"
f931e704adc5 libtwamr: bits and parameter packing
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
7 #include "namespace.h"
f931e704adc5 libtwamr: bits and parameter packing
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
8 #include "int_defs.h"
f931e704adc5 libtwamr: bits and parameter packing
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
9
f931e704adc5 libtwamr: bits and parameter packing
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
10 /* number of parameters per modes (values must be <= MAX_PRM_SIZE!) */
f931e704adc5 libtwamr: bits and parameter packing
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
11 const Word16 prmno[9] = {
f931e704adc5 libtwamr: bits and parameter packing
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
12 PRMNO_MR475,
f931e704adc5 libtwamr: bits and parameter packing
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
13 PRMNO_MR515,
f931e704adc5 libtwamr: bits and parameter packing
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
14 PRMNO_MR59,
f931e704adc5 libtwamr: bits and parameter packing
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
15 PRMNO_MR67,
f931e704adc5 libtwamr: bits and parameter packing
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
16 PRMNO_MR74,
f931e704adc5 libtwamr: bits and parameter packing
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
17 PRMNO_MR795,
f931e704adc5 libtwamr: bits and parameter packing
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
18 PRMNO_MR102,
f931e704adc5 libtwamr: bits and parameter packing
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
19 PRMNO_MR122,
f931e704adc5 libtwamr: bits and parameter packing
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
20 PRMNO_MRDTX
f931e704adc5 libtwamr: bits and parameter packing
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
21 };
f931e704adc5 libtwamr: bits and parameter packing
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
22
f931e704adc5 libtwamr: bits and parameter packing
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
23 /* number of parameters to first subframe per modes */
f931e704adc5 libtwamr: bits and parameter packing
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
24 const Word16 prmnofsf[8] = {
f931e704adc5 libtwamr: bits and parameter packing
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
25 PRMNOFSF_MR475,
f931e704adc5 libtwamr: bits and parameter packing
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
26 PRMNOFSF_MR515,
f931e704adc5 libtwamr: bits and parameter packing
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
27 PRMNOFSF_MR59,
f931e704adc5 libtwamr: bits and parameter packing
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
28 PRMNOFSF_MR67,
f931e704adc5 libtwamr: bits and parameter packing
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
29 PRMNOFSF_MR74,
f931e704adc5 libtwamr: bits and parameter packing
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
30 PRMNOFSF_MR795,
f931e704adc5 libtwamr: bits and parameter packing
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
31 PRMNOFSF_MR102,
f931e704adc5 libtwamr: bits and parameter packing
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
32 PRMNOFSF_MR122
f931e704adc5 libtwamr: bits and parameter packing
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
33 };