diff options
Diffstat (limited to 'src/lp4pole.c')
-rw-r--r-- | src/lp4pole.c | 96 |
1 files changed, 55 insertions, 41 deletions
diff --git a/src/lp4pole.c b/src/lp4pole.c index a00ca5b..8a7184e 100644 --- a/src/lp4pole.c +++ b/src/lp4pole.c @@ -18,9 +18,11 @@ */ #include <stdlib.h> +#include "lv2/lv2plug.in/ns/ext/morph/morph.h" #include "lv2/lv2plug.in/ns/lv2core/lv2.h" #include "lp4pole_filter.h" #include "common.h" +#include "uris.h" #define LP4POLE_CUTOFF 0 #define LP4POLE_RESONANCE 1 @@ -33,6 +35,9 @@ typedef struct { float* input; float* output; LP4PoleFilter* lpf; + uint32_t cutoff_is_cv; + uint32_t resonance_is_cv; + URIs uris; } Lp4pole; static void @@ -68,6 +73,33 @@ connect_port(LV2_Handle instance, } } +static LV2_Morph_Status +morph_port(LV2_Handle instance, + uint32_t port, + LV2_URID type, + const LV2_Morph_Property*const* properties) +{ + Lp4pole* plugin = (Lp4pole*)instance; + + if (type != plugin->uris.lv2_ControlPort && + type != plugin->uris.lv2_CVPort) { + return LV2_MORPH_ERR_BAD_TYPE; + } + + switch (port) { + case LP4POLE_CUTOFF: + plugin->cutoff_is_cv = (type == plugin->uris.lv2_CVPort); + break; + case LP4POLE_RESONANCE: + plugin->resonance_is_cv = (type == plugin->uris.lv2_CVPort); + break; + default: + return LV2_MORPH_ERR_BAD_PORT; + } + + return LV2_MORPH_SUCCESS; +} + static LV2_Handle instantiate(const LV2_Descriptor* descriptor, double sample_rate, @@ -83,6 +115,10 @@ instantiate(const LV2_Descriptor* descriptor, plugin = 0; } } + + plugin->cutoff_is_cv = 0; + plugin->resonance_is_cv = 0; + return (LV2_Handle)plugin; } @@ -95,15 +131,15 @@ activate(LV2_Handle instance) } static void -runLp4pole_faraia_oa(LV2_Handle instance, - uint32_t sample_count) +run(LV2_Handle instance, + uint32_t sample_count) { Lp4pole* plugin = (Lp4pole*)instance; - /* Cutoff Frequency (array of floats of length sample_count) */ + /* Cutoff Frequency (array of floats of length 1 or sample_count) */ const float* cutoff = plugin->cutoff; - /* Resonance (array of floats of length sample_count) */ + /* Resonance (array of floats of length 1 or sample_count) */ const float* resonance = plugin->resonance; /* Input (array of floats of length sample_count) */ @@ -115,61 +151,39 @@ runLp4pole_faraia_oa(LV2_Handle instance, /* Instance data */ LP4PoleFilter* lpf = plugin->lpf; - float in; - float co; - float res; - for (uint32_t s = 0; s < sample_count; ++s) { - co = cutoff[s]; - res = resonance[s]; - in = input[s]; + const float co = cutoff[s * plugin->cutoff_is_cv]; + const float res = resonance[s * plugin->resonance_is_cv]; + const float in = input[s]; + /* TODO: There is no branching in this function. + Would it actually be faster to check if co or res has changed? + */ lp4pole_set_params(lpf, co, res); output[s] = lp4pole_run(lpf, in); } } -static void -runLp4pole_fcrcia_oa(LV2_Handle instance, - uint32_t sample_count) +static const void* +extension_data(const char* uri) { - Lp4pole* plugin = (Lp4pole*)instance; - - /* Cutoff Frequency (float value) */ - const float cutoff = *(plugin->cutoff); - - /* Resonance (float value) */ - const float resonance = *(plugin->resonance); - - /* Input (array of floats of length sample_count) */ - const float* input = plugin->input; - - /* Output (pointer to float value) */ - float* output = plugin->output; - - /* Instance data */ - LP4PoleFilter* lpf = plugin->lpf; - - float in; - - lp4pole_set_params(lpf, cutoff, resonance); - - for (uint32_t s = 0; s < sample_count; ++s) { - in = input[s]; - output[s] = lp4pole_run(lpf, in); + static const LV2_Morph_Interface morph = { morph_port, NULL }; + if (!strcmp(uri, LV2_MORPH__interface)) { + return &morph; } + return NULL; } static const LV2_Descriptor descriptor = { - "http://drobilla.net/plugins/blip/lp4pole", + "http://drobilla.net/plugins/blop/lp4pole", instantiate, connect_port, activate, - runLp4pole_fcrcia_oa, + run, NULL, cleanup, - NULL, + extension_data, }; LV2_SYMBOL_EXPORT const LV2_Descriptor* |