clap

commit e9bbd307febeb99dfb362f933142456e0cd95603
parent efc3b479df365c924ded5a10fbe9ecfdec1a89eb
Author: Alexandre Bique <bique.alexandre@gmail.com>
Date:   Wed, 20 Apr 2022 14:27:40 +0200

Add a voice info draft extensions

Diffstat:
M
include/clap/clap.h
 | 
1
+
A
include/clap/ext/draft/voice-info.h
 | 
46
++++++++++++++++++++++++++++++++++++++++++++++

2 files changed, 47 insertions(+), 0 deletions(-)
diff --git a/include/clap/clap.h b/include/clap/clap.h
@@ -58,6 +58,7 @@
 #include "ext/draft/surround.h"
 #include "ext/draft/cv.h"
 #include "ext/draft/ambisonic.h"
+#include "ext/draft/voice-info.h"
 
 #include "converters/vst2-converter.h"
 #include "converters/vst3-converter.h"
diff --git a/include/clap/ext/draft/voice-info.h b/include/clap/ext/draft/voice-info.h
@@ -0,0 +1,46 @@
+#pragma once
+
+#include "../../plugin.h"
+
+// This extensions indicates the number of voices the synthesizer.
+// It is useful for the host when performing polyphonic modulations,
+// because the host needs its own voice management and should try to follow
+// what the plugin is doing.
+
+static const char CLAP_EXT_VOICE_INFO[] = "clap.voice-info.draft/0";
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct clap_voice_info {
+   // voice_count is the current number of voices that the patch can use
+   // voice_capacity is the number of voices allocated voices
+   // voice_count should not be confused with the number of active voices.
+   //
+   // 1 <= voice_count <= voice_capacity
+   //
+   // For example, a synth can have a capacity of 8 voices, but be configured
+   // to only use 4 voices: {count: 4, capacity: 8}.
+   //
+   // If the voice_count is 1, then the synth is working in mono and the host
+   // can decide to only use global modulation mapping.
+   uint32_t voice_count;
+   uint32_t voice_capacity;
+} clap_voice_info_t;
+
+typedef struct clap_plugin_voice_info {
+   // gets the voice info, returns true on success
+   // [main-thread]
+   bool (*get)(const clap_plugin_t *plugin, clap_voice_info_t *info);
+} clap_plugin_voice_info_t;
+
+typedef struct clap_host_voice_info {
+   // informs the host that the voice info have changed
+   // [main-thread]
+   void (*changed)(const clap_host_t *host);
+} clap_host_voice_info_t;
+
+#ifdef __cplusplus
+}
+#endif