FreeCalypso > hg > gsm-codec-lib
annotate libtest/wavrdhelp.h @ 183:452c1d5a6268
libgsmefr BFI w/o data: emit zero output after decoder reset
In real-life usage, each EFR decoder session will most likely begin
with lots of BFI frames before the first real frame arrives. However,
because the spec-defined home state of the decoder is speech rather
than CN, our regular logic for BFI w/o data would have to feed
pseudorandom noise to the decoder (in the "fixed codebook excitation
pulses" part), which is silly to do at the beginning of the decoder
session right out of reset. Therefore, let's check reset_flag_old,
and if we are still in the reset state, simply emit zero output.
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Tue, 03 Jan 2023 00:12:18 +0000 |
parents | 30d1d0a705c0 |
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rev | line source |
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13
30d1d0a705c0
libtest: add WAV reader helper functions
Mychaela Falconia <falcon@freecalypso.org>
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1 /* |
30d1d0a705c0
libtest: add WAV reader helper functions
Mychaela Falconia <falcon@freecalypso.org>
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2 * We implement a couple of helper functions on top of the WAV reader |
30d1d0a705c0
libtest: add WAV reader helper functions
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
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3 * which we've lifted out of opencore-amrnb test code; this header file |
30d1d0a705c0
libtest: add WAV reader helper functions
Mychaela Falconia <falcon@freecalypso.org>
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changeset
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4 * provides prototype declarations for these functions. |
30d1d0a705c0
libtest: add WAV reader helper functions
Mychaela Falconia <falcon@freecalypso.org>
parents:
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5 */ |
30d1d0a705c0
libtest: add WAV reader helper functions
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
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6 |
30d1d0a705c0
libtest: add WAV reader helper functions
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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7 extern int wavrd_check_header(void *wav, const char *filename); |
30d1d0a705c0
libtest: add WAV reader helper functions
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
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8 extern int wavrd_get_pcm_block(void *wav, int16_t *pcmbuf); |