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https://github.com/cookiengineer/audacity
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32 lines
1.0 KiB
Plaintext
32 lines
1.0 KiB
Plaintext
(OSC-ALG
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(NAME "osc")
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(ARGUMENTS ("sound_type" "input") ("double" "step") ("rate_type" "sr")
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("double" "hz") ("time_type" "t0") ("time_type" "d")
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("double" "phase"))
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(TABLE "input")
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(NOT-IN-INNER-LOOP "input")
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(STATE
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("double" "ph_incr" "0")
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("table_type" "the_table" "sound_to_table(input)")
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("sample_type *" "table_ptr" "susp->the_table->samples")
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("double" "table_len" "susp->the_table->length")
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("double" "phase" "compute_phase(phase, step, (long) susp->table_len,
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input->sr, sr, hz, &susp->ph_incr)") )
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; "((hz * susp->table_len) / sr)")
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(TERMINATE (AFTER "d"))
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(INNER-LOOP "
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long table_index = (long) phase;
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double x1 = table_ptr[table_index];
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output = (sample_type) (x1 + (phase - table_index) *
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(table_ptr[table_index + 1] - x1));
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phase += ph_incr;
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while (phase >= table_len) phase -= table_len;
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")
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(CONSTANT "ph_incr" "table_len" "table_ptr")
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(SAMPLE-RATE "sr")
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(FINALIZATION " table_unref(susp->the_table);
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")
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)
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