FreeCalypso > hg > gsm-codec-lib

annotate libtwamr/vad.h @ 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 028ed5114e52
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
414
028ed5114e52 libtwamr: implement run-time VAD selection scheme
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 /*
028ed5114e52 libtwamr: implement run-time VAD selection scheme
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2 * In the original 3GPP code, the selection between VAD1 and VAD2 is made
028ed5114e52 libtwamr: implement run-time VAD selection scheme
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
3 * only at compile time. In libtwamr we support run-time selection between
028ed5114e52 libtwamr: implement run-time VAD selection scheme
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
4 * these two VAD algorithms for tinkering and investigation work; this
028ed5114e52 libtwamr: implement run-time VAD selection scheme
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
5 * header file implements the logic that fits this run-time selection
028ed5114e52 libtwamr: implement run-time VAD selection scheme
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
6 * into the existing code structure from 3GPP.
028ed5114e52 libtwamr: implement run-time VAD selection scheme
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
7 */
028ed5114e52 libtwamr: implement run-time VAD selection scheme
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
8
028ed5114e52 libtwamr: implement run-time VAD selection scheme
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
9 #ifndef vad_h
028ed5114e52 libtwamr: implement run-time VAD selection scheme
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
10 #define vad_h
028ed5114e52 libtwamr: implement run-time VAD selection scheme
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
11
028ed5114e52 libtwamr: implement run-time VAD selection scheme
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
12 #include "typedef.h"
028ed5114e52 libtwamr: implement run-time VAD selection scheme
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
13 #include "vad1.h"
028ed5114e52 libtwamr: implement run-time VAD selection scheme
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
14 #include "vad2.h"
028ed5114e52 libtwamr: implement run-time VAD selection scheme
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
15
028ed5114e52 libtwamr: implement run-time VAD selection scheme
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
16 typedef struct {
028ed5114e52 libtwamr: implement run-time VAD selection scheme
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
17 Flag use_vad2;
028ed5114e52 libtwamr: implement run-time VAD selection scheme
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
18 union {
028ed5114e52 libtwamr: implement run-time VAD selection scheme
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
19 vadState1 v1;
028ed5114e52 libtwamr: implement run-time VAD selection scheme
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
20 vadState2 v2;
028ed5114e52 libtwamr: implement run-time VAD selection scheme
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
21 } u;
028ed5114e52 libtwamr: implement run-time VAD selection scheme
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
22 } vadState;
028ed5114e52 libtwamr: implement run-time VAD selection scheme
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
23
028ed5114e52 libtwamr: implement run-time VAD selection scheme
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
24 void vad_reset(vadState *st, Flag use_vad2);
028ed5114e52 libtwamr: implement run-time VAD selection scheme
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
25
028ed5114e52 libtwamr: implement run-time VAD selection scheme
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
26 #endif /* include guard */