FreeCalypso > hg > gsm-codec-lib
view miscutil/gsmrec-dump.c @ 477:4c9222d95647
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 | b5f8ea41362b |
children |
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/* * This program reads a binary file in our extended-libgsm format * and dumps all frames in human-readable form. */ #include <stdio.h> #include <stdint.h> #include <stdlib.h> #include <string.h> #include <strings.h> #include "../libgsmfr2/tw_gsmfr.h" #include "../libgsmefr/gsm_efr.h" #include "../libtest/binreader.h" main(argc, argv) char **argv; { FILE *binf; unsigned frame_index; uint8_t frame[BINFILE_MAX_FRAME]; int16_t params[GSMFR_NUM_PARAMS]; int rc, i, j, n; if (argc != 2) { fprintf(stderr, "usage: %s bin-stream-file\n", argv[0]); exit(1); } binf = fopen(argv[1], "r"); if (!binf) { perror(argv[1]); exit(1); } for (frame_index = 0; ; frame_index++) { rc = binfile_read_frame(binf, frame); if (rc < 0) { fprintf(stderr, "error: garbage in %s\n", argv[1]); exit(1); } if (!rc) break; printf("#%u: ", frame_index); switch (frame[0] & 0xF0) { case 0xB0: printf("BFI TAF=%u\n", frame[1] & 1); break; case 0xC0: printf("EFR SID=%d LPC", EFR_sid_classify(frame)); EFR_frame2params(frame, params); n = 0; for (i = 0; i < 5; i++) printf(" %d", params[n++]); if (!bcmp(frame, EFR_decoder_homing_frame, EFR_RTP_FRAME_LEN)) fputs(" (DHF)", stdout); putchar('\n'); for (i = 0; i < 4; i++) { putchar(' '); for (j = 0; j < 13; j++) printf(" %d", params[n++]); putchar('\n'); } break; case 0xD0: printf("FR SID=%d", gsmfr_preproc_sid_classify(frame)); gsmfr_unpack_to_array(frame, params); n = 0; for (i = 0; i < 8; i++) printf(" %d", params[n++]); if (!bcmp(frame, gsmfr_decoder_homing_frame, GSMFR_RTP_FRAME_LEN)) fputs(" (DHF)", stdout); putchar('\n'); for (i = 0; i < 4; i++) { putchar(' '); for (j = 0; j < 17; j++) printf(" %d", params[n++]); putchar('\n'); } break; } } exit(0); }