aboutsummaryrefslogtreecommitdiffstats
path: root/src/difference.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/difference.c')
-rw-r--r--src/difference.c169
1 files changed, 95 insertions, 74 deletions
diff --git a/src/difference.c b/src/difference.c
index bee9552..92e9a26 100644
--- a/src/difference.c
+++ b/src/difference.c
@@ -18,16 +18,22 @@
*/
#include <stdlib.h>
+#include "lv2/lv2plug.in/ns/ext/morph/morph.h"
#include "lv2/lv2plug.in/ns/lv2core/lv2.h"
+#include "uris.h"
-#define DIFFERENCE_INPUT 0
-#define DIFFERENCE_MINUS 1
-#define DIFFERENCE_OUTPUT 2
+#define DIFFERENCE_MINUEND 0
+#define DIFFERENCE_SUBTRAHEND 1
+#define DIFFERENCE_DIFFERENCE 2
typedef struct {
- float* input;
- float* minus;
- float* output;
+ float* minuend;
+ float* subtrahend;
+ float* difference;
+ uint32_t minuend_is_cv;
+ uint32_t subtrahend_is_cv;
+ uint32_t difference_is_cv;
+ URIs uris;
} Difference;
static void
@@ -44,116 +50,131 @@ connect_port(LV2_Handle instance,
Difference* plugin = (Difference*)instance;
switch (port) {
- case DIFFERENCE_INPUT:
- plugin->input = data;
+ case DIFFERENCE_MINUEND:
+ plugin->minuend = data;
break;
- case DIFFERENCE_MINUS:
- plugin->minus = data;
+ case DIFFERENCE_SUBTRAHEND:
+ plugin->subtrahend = data;
break;
- case DIFFERENCE_OUTPUT:
- plugin->output = data;
+ case DIFFERENCE_DIFFERENCE:
+ plugin->difference = data;
break;
}
}
-static LV2_Handle
-instantiate(const LV2_Descriptor* descriptor,
- double sample_rate,
- const char* bundle_path,
- const LV2_Feature* const* features)
-{
- Difference* plugin = (Difference*)malloc(sizeof(Difference));
-
- return (LV2_Handle)plugin;
-}
-
-static void
-runDifference_iama_oa(LV2_Handle instance,
- uint32_t sample_count)
+static LV2_Morph_Status
+morph_port(LV2_Handle instance,
+ uint32_t port,
+ LV2_URID type,
+ const LV2_Morph_Property*const* properties)
{
Difference* plugin = (Difference*)instance;
- /* Input (array of floats of length sample_count) */
- const float* input = plugin->input;
+ if (type != plugin->uris.lv2_ControlPort &&
+ type != plugin->uris.lv2_CVPort) {
+ return LV2_MORPH_ERR_BAD_TYPE;
+ }
- /* Input to Subtract (array of floats of length sample_count) */
- const float* minus = plugin->minus;
+ switch (port) {
+ case DIFFERENCE_MINUEND:
+ plugin->minuend_is_cv = (type == plugin->uris.lv2_CVPort);
+ break;
+ case DIFFERENCE_SUBTRAHEND:
+ plugin->subtrahend_is_cv = (type == plugin->uris.lv2_CVPort);
+ break;
+ default:
+ return LV2_MORPH_ERR_BAD_PORT;
+ }
- /* Output (array of floats of length sample_count) */
- float* output = plugin->output;
+ plugin->difference_is_cv = (plugin->minuend_is_cv ||
+ plugin->subtrahend_is_cv);
- for (uint32_t s = 0; s < sample_count; ++s) {
- output[s] = input[s] - minus[s];
- }
+ return LV2_MORPH_SUCCESS;
}
-static void
-runDifference_iamc_oa(LV2_Handle instance,
- uint32_t sample_count)
+static LV2_URID
+port_type(LV2_Handle instance,
+ uint32_t port,
+ LV2_Morph_Property*const* properties)
{
Difference* plugin = (Difference*)instance;
- /* Input (array of floats of length sample_count) */
- const float* input = plugin->input;
+ switch (port) {
+ case DIFFERENCE_DIFFERENCE:
+ return (plugin->difference_is_cv
+ ? plugin->uris.lv2_CVPort
+ : plugin->uris.lv2_ControlPort);
+ default:
+ return 0;
+ }
+}
+
+static LV2_Handle
+instantiate(const LV2_Descriptor* descriptor,
+ double sample_rate,
+ const char* bundle_path,
+ const LV2_Feature* const* features)
+{
+ Difference* plugin = (Difference*)malloc(sizeof(Difference));
+ if (!plugin) {
+ return NULL;
+ }
- /* Input to Subtract (float value) */
- const float minus = *(plugin->minus);
+ plugin->minuend_is_cv = 0;
+ plugin->subtrahend_is_cv = 0;
+ plugin->difference_is_cv = 0;
- /* Output (array of floats of length sample_count) */
- float* output = plugin->output;
+ map_uris(&plugin->uris, features);
- for (uint32_t s = 0; s < sample_count; ++s) {
- output[s] = input[s] - minus;
- }
+ return (LV2_Handle)plugin;
}
static void
-runDifference_icma_oa(LV2_Handle instance,
- uint32_t sample_count)
+run(LV2_Handle instance,
+ uint32_t sample_count)
{
Difference* plugin = (Difference*)instance;
- /* Input (float value) */
- const float input = *(plugin->input);
+ /* Minuend (array of floats of length 1 or sample_count) */
+ const float* minuend = plugin->minuend;
- /* Input to Subtract (array of floats of length sample_count) */
- const float* minus = plugin->minus;
+ /* Subtrahend (array of floats of length 1 or sample_count) */
+ const float* subtrahend = plugin->subtrahend;
- /* Output (array of floats of length sample_count) */
- float* output = plugin->output;
+ /* Difference (array of floats of length 1 or sample_count) */
+ float* difference = plugin->difference;
+
+ if (!plugin->difference_is_cv) { /* TODO: Avoid this branch */
+ sample_count = 1;
+ }
for (uint32_t s = 0; s < sample_count; ++s) {
- output[s] = input - minus[s];
+ const float min = minuend[s * plugin->minuend_is_cv];
+ const float sub = subtrahend[s * plugin->subtrahend_is_cv];
+
+ difference[s] = min - sub;
}
}
-static void
-runDifference_icmc_oc(LV2_Handle instance,
- uint32_t sample_count)
+static const void*
+extension_data(const char* uri)
{
- Difference* plugin = (Difference*)instance;
-
- /* Input (float value) */
- const float input = *(plugin->input);
-
- /* Input to Subtract (float value) */
- const float minus = *(plugin->minus);
-
- /* Output Frequency (pointer to float value) */
- float* output = plugin->output;
-
- output[0] = input - minus;
+ static const LV2_Morph_Interface morph = { morph_port, port_type };
+ if (!strcmp(uri, LV2_MORPH__interface)) {
+ return &morph;
+ }
+ return NULL;
}
static const LV2_Descriptor descriptor = {
- "http://drobilla.net/plugins/blip/difference",
+ "http://drobilla.net/plugins/blop/difference",
instantiate,
connect_port,
NULL,
- runDifference_icmc_oc,
+ run,
NULL,
cleanup,
- NULL,
+ extension_data,
};
LV2_SYMBOL_EXPORT const LV2_Descriptor*
generated by cgit v1.2.1 (git 2.18.0) at 2024-04-23 07:52:47 +0000