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fix: update codec2 decoder to use bytes per frame instead of samples

pull/29/head
OE3ANC 2026-02-06 12:57:50 +01:00
parent 2175a4c718
commit 10e2658a54
1 changed files with 8 additions and 13 deletions
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21
lib/codec2_decoder_impl.cc
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@ -62,7 +62,7 @@ namespace gr
codec2_decoder_impl::forecast(int noutput_items,
gr_vector_int &ninput_items_required)
{
ninput_items_required[0] = CODEC2_SAMPLES_PER_FRAME; // 160 samples
ninput_items_required[0] = CODEC2_BYTES_PER_FRAME;
}
int
@ -71,26 +71,21 @@ namespace gr
gr_vector_const_void_star &input_items,
gr_vector_void_star &output_items)
{
const int16_t *speech = static_cast<const int16_t *>(input_items[0]);
const uint8_t *bits = static_cast<const uint8_t *>(input_items[0]);
uint8_t *bits = static_cast<uint8_t *>(output_items[0]);
int16_t *speech = static_cast<int16_t *>(output_items[0]);
// we need one full speech frame
if (ninput_items[0] < CODEC2_SAMPLES_PER_FRAME)
if (ninput_items[0] < CODEC2_BYTES_PER_FRAME)
return 0;
// we need space for 8 output bytes
if (noutput_items < CODEC2_BYTES_PER_FRAME)
if (noutput_items < CODEC2_SAMPLES_PER_FRAME)
return 0;
// decode exactly one frame
codec2_decode(&c2, const_cast<int16_t *>(speech), bits );
codec2_decode(&c2, speech, bits);
// consume 160 samples
consume_each(CODEC2_SAMPLES_PER_FRAME);
consume_each(CODEC2_BYTES_PER_FRAME);
// produce 8 bytes
return CODEC2_BYTES_PER_FRAME;
return CODEC2_SAMPLES_PER_FRAME;
}
} /* namespace m17 */
} /* namespace gr */