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authorDavid Robillard <d@drobilla.net>2012-05-31 06:23:57 +0000
committerDavid Robillard <d@drobilla.net>2012-05-31 06:23:57 +0000
commit7b20413c84b14d2c2bc1037bb08134dcdf152ddb (patch)
treec7c339d6c4d0d26b01e654163e7a8a203f62baf4 /src/amp.c
parent46caaf6b96f185a4a25d1d12fc85720a03220e97 (diff)
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Umm... commit pretty much all the work of the past few days. Again.
git-svn-id: http://svn.drobilla.net/lad/trunk/plugins/blop.lv2@4488 a436a847-0d15-0410-975c-d299462d15a1
Diffstat (limited to 'src/amp.c')
-rw-r--r--src/amp.c77
1 files changed, 46 insertions, 31 deletions
diff --git a/src/amp.c b/src/amp.c
index edb9291..dac6bb0 100644
--- a/src/amp.c
+++ b/src/amp.c
@@ -18,8 +18,10 @@
*/
#include <stdlib.h>
+#include "lv2/lv2plug.in/ns/ext/morph/morph.h"
#include "lv2/lv2plug.in/ns/lv2core/lv2.h"
#include "math_func.h"
+#include "uris.h"
#define AMP_GAIN 0
#define AMP_INPUT 1
@@ -29,6 +31,8 @@ typedef struct {
const float* gain;
const float* input;
float* output;
+ URIs uris;
+ uint32_t gain_is_cv;
} Amp;
static void
@@ -57,6 +61,28 @@ 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)
+{
+ Amp* plugin = (Amp*)instance;
+ switch (port) {
+ case AMP_GAIN:
+ if (type == plugin->uris.lv2_ControlPort) {
+ plugin->gain_is_cv = 0;
+ } else if (type == plugin->uris.lv2_CVPort) {
+ plugin->gain_is_cv = 1;
+ } else {
+ return LV2_MORPH_ERR_BAD_TYPE;
+ }
+ return LV2_MORPH_SUCCESS;
+ default:
+ return LV2_MORPH_ERR_BAD_PORT;
+ }
+}
+
static LV2_Handle
instantiate(const LV2_Descriptor* descriptor,
double sample_rate,
@@ -64,13 +90,19 @@ instantiate(const LV2_Descriptor* descriptor,
const LV2_Feature* const* features)
{
Amp* plugin = (Amp*)malloc(sizeof(Amp));
+ if (!plugin) {
+ return NULL;
+ }
+
+ plugin->gain_is_cv = 0;
+ map_uris(&plugin->uris, features);
return (LV2_Handle)plugin;
}
static void
-runAmp_gaia_oa(LV2_Handle instance,
- uint32_t sample_count)
+run(LV2_Handle instance,
+ uint32_t sample_count)
{
Amp* plugin = (Amp*)instance;
@@ -83,50 +115,33 @@ runAmp_gaia_oa(LV2_Handle instance,
/* Output */
float* output = plugin->output;
- float gn;
- float in;
- float scale;
-
for (uint32_t s = 0; s < sample_count; ++s) {
- gn = gain[s];
- in = input[s];
+ const float gn = gain[s * plugin->gain_is_cv];
+ const float scale = (float)EXPF(M_LN10 * gn * 0.05f);
- scale = (float)EXPF(M_LN10 * gn * 0.05f);
-
- output[s] = scale * in;
+ output[s] = scale * input[s];
}
}
-static void
-runAmp_gcia_oa(LV2_Handle instance,
- uint32_t sample_count)
+static const void*
+extension_data(const char* uri)
{
- Amp* plugin = (Amp*)instance;
-
- /* Gain (dB) */
- const float gain = *(plugin->gain);
-
- /* Input */
- const float* input = plugin->input;
-
- /* Output */
- float* output = plugin->output;
-
- const float scale = (float)EXPF(M_LN10 * gain * 0.05f);
- for (uint32_t s = 0; s < sample_count; s++) {
- output[s] = scale * input[s];
+ 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/amp",
+ "http://drobilla.net/plugins/blop/amp",
instantiate,
connect_port,
NULL,
- runAmp_gcia_oa,
+ run,
NULL,
cleanup,
- NULL,
+ extension_data,
};
LV2_SYMBOL_EXPORT const LV2_Descriptor*