clap

commit 42629a42457bd9aa18caee7f9abd92aadff5cee2
parent 6ff505a1f5f151703ee01ffcddfedc5185c7ed76
Author: Alexandre BIQUE <bique.alexandre@gmail.com>
Date:   Sat, 25 Dec 2021 15:20:09 +0100

Rework ambisonic

Diffstat:
M
include/clap/chmap.h
 | 
7
++-----
A
include/clap/ext/draft/ambisonic.h
 | 
49
+++++++++++++++++++++++++++++++++++++++++++++++++

2 files changed, 51 insertions(+), 5 deletions(-)
diff --git a/include/clap/chmap.h b/include/clap/chmap.h
@@ -16,11 +16,8 @@ enum {
    // see clap_plugin_surround to inspect the exact channel layout
    CLAP_CHMAP_SURROUND = 3,
 
-   // FuMa channel ordering
-   CLAP_CHMAP_AMBISONIC_FUMA = 4,
-
-   // ACN channel ordering
-   CLAP_CHMAP_AMBISONIC_ACN = 5,
+   // see clap_plugin_ambisonic to inspect the mapping
+   CLAP_CHMAP_AMBISONIC = 4,
 };
 typedef int32_t clap_chmap;
 
diff --git a/include/clap/ext/draft/ambisonic.h b/include/clap/ext/draft/ambisonic.h
@@ -0,0 +1,49 @@
+#pragma once
+
+#include "../../plugin.h"
+
+// This extension can be used to specify the channel mapping used by the plugin.
+
+static CLAP_CONSTEXPR const char CLAP_EXT_AMBISONIC[] = "clap.ambisonic.draft/0";
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#pragma pack(push, CLAP_ALIGN)
+
+enum {
+   // FuMa channel ordering
+   CLAP_AMBISONIC_FUMA = 0,
+
+   // ACN channel ordering
+   CLAP_AMBISONIC_ACN = 1,
+};
+
+typedef struct clap_ambisonic_info {
+   alignas(4) uint32_t ordering;
+   alignas(1) bool is_normalized;
+} clap_ambisonic_info_t;
+
+typedef struct clap_plugin_ambisonic {
+   // Returns true on success
+   // [main-thread]
+   bool (*get_info)(const clap_plugin_t   *plugin,
+                    bool                   is_input,
+                    uint32_t               port_index,
+                    clap_ambisonic_info_t *info);
+
+} clap_plugin_ambisonic_t;
+
+typedef struct clap_host_ambisonic {
+   // Informs the host that the info have changed.
+   // The info can only change when the plugin is de-activated.
+   // [main-thread]
+   void (*changed)(const clap_host_t *host);
+} clap_host_ambisonic_t;
+
+#pragma pack(pop)
+
+#ifdef __cplusplus
+}
+#endif