midi: Remove non-standard midi:Tick message type.

midi: Add C definitions for message types and standard controllers.
midi: Fix definition of SystemExclusive status byte.
Use new MIDI API in eg-sampler.

3 files changed, 164 insertions, 9 deletions

diff --git a/lv2/lv2plug.in/ns/ext/midi/lv2-midi.doap.ttl b/lv2/lv2plug.in/ns/ext/midi/lv2-midi.doap.ttl
index b4f874e..4649d58 100644
--- a/lv2/lv2plug.in/ns/ext/midi/lv2-midi.doap.ttl
+++ b/lv2/lv2plug.in/ns/ext/midi/lv2-midi.doap.ttl
@@ -21,8 +21,13 @@
 			dcs:item [
 				rdfs:label "Use consistent label style."
 			] , [
-				rdfs:label "Add midi:binding and midi:channel."
-			]
+				rdfs:label "Add midi:binding and midi:channel predicates."
+			] , [
+				rdfs:label "Remove non-standard midi:Tick message type."
+			] , [
+				rdfs:label "Add C definitions for message types and standard controllers."
+			] , [
+            	rdfs:label "Fix definition of SystemExclusive status byte."
 		]
 	] , [
 		doap:revision "1.6" ;
diff --git a/lv2/lv2plug.in/ns/ext/midi/midi.h b/lv2/lv2plug.in/ns/ext/midi/midi.h
index acf403e..2c53c49 100644
--- a/lv2/lv2plug.in/ns/ext/midi/midi.h
+++ b/lv2/lv2plug.in/ns/ext/midi/midi.h
@@ -22,6 +22,14 @@
 #ifndef LV2_MIDI_H
 #define LV2_MIDI_H
 
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#else
+#    include <stdbool.h>
+#endif
+
 #define LV2_MIDI_URI    "http://lv2plug.in/ns/ext/midi"
 #define LV2_MIDI_PREFIX LV2_MIDI_URI "#"
 
@@ -67,4 +75,152 @@
 #define LV2_MIDI__statusMask       LV2_MIDI_PREFIX "statusMask"
 #define LV2_MIDI__velocity         LV2_MIDI_PREFIX "velocity"
 
+/**
+   MIDI Message Type.
+
+   This includes both voice messages (which have a channel) and system messages
+   (which do not), as well as a sentinel value for invalid messages.  To get
+   the type of a message suitable for use in a switch statement, use
+   lv2_midi_get_type() on the status byte.
+*/
+typedef enum {
+	LV2_MIDI_MSG_INVALID          = 0,     /**< Invalid Message */
+	LV2_MIDI_MSG_NOTE_OFF         = 0x80,  /**< Note Off */
+	LV2_MIDI_MSG_NOTE_ON          = 0x90,  /**< Note On */
+	LV2_MIDI_MSG_NOTE_PRESSURE    = 0xA0,  /**< Note Pressure */
+	LV2_MIDI_MSG_CONTROLLER       = 0xB0,  /**< Controller */
+	LV2_MIDI_MSG_PGM_CHANGE       = 0xC0,  /**< Program Change */
+	LV2_MIDI_MSG_CHANNEL_PRESSURE = 0xD0,  /**< Channel Pressure */
+	LV2_MIDI_MSG_BENDER           = 0xE0,  /**< Pitch Bender */
+	LV2_MIDI_MSG_SYSTEM_EXCLUSIVE = 0xF0,  /**< System Exclusive Begin */
+	LV2_MIDI_MSG_MTC_QUARTER      = 0xF1,  /**< MTC Quarter Frame */
+	LV2_MIDI_MSG_SONG_POS         = 0xF2,  /**< Song Position */
+	LV2_MIDI_MSG_SONG_SELECT      = 0xF3,  /**< Song Select */
+	LV2_MIDI_MSG_TUNE_REQUEST     = 0xF6,  /**< Tune Request */
+	LV2_MIDI_MSG_CLOCK            = 0xF8,  /**< Clock */
+	LV2_MIDI_MSG_START            = 0xFA,  /**< Start */
+	LV2_MIDI_MSG_CONTINUE         = 0xFB,  /**< Continue */
+	LV2_MIDI_MSG_STOP             = 0xFC,  /**< Stop */
+	LV2_MIDI_MSG_ACTIVE_SENSE     = 0xFE,  /**< Active Sensing */
+	LV2_MIDI_MSG_RESET            = 0xFF   /**< Reset */
+} LV2_Midi_Message_Type;
+
+/**
+   Standard MIDI Controller Numbers.
+*/
+typedef enum {
+	LV2_MIDI_CTL_MSB_BANK             = 0x00,  /**< Bank Selection */
+	LV2_MIDI_CTL_MSB_MODWHEEL         = 0x01,  /**< Modulation */
+	LV2_MIDI_CTL_MSB_BREATH           = 0x02,  /**< Breath */
+	LV2_MIDI_CTL_MSB_FOOT             = 0x04,  /**< Foot */
+	LV2_MIDI_CTL_MSB_PORTAMENTO_TIME  = 0x05,  /**< Portamento Time */
+	LV2_MIDI_CTL_MSB_DATA_ENTRY       = 0x06,  /**< Data Entry */
+	LV2_MIDI_CTL_MSB_MAIN_VOLUME      = 0x07,  /**< Main Volume */
+	LV2_MIDI_CTL_MSB_BALANCE          = 0x08,  /**< Balance */
+	LV2_MIDI_CTL_MSB_PAN              = 0x0A,  /**< Panpot */
+	LV2_MIDI_CTL_MSB_EXPRESSION       = 0x0B,  /**< Expression */
+	LV2_MIDI_CTL_MSB_EFFECT1          = 0x0C,  /**< Effect1 */
+	LV2_MIDI_CTL_MSB_EFFECT2          = 0x0D,  /**< Effect2 */
+	LV2_MIDI_CTL_MSB_GENERAL_PURPOSE1 = 0x10,  /**< General Purpose 1 */
+	LV2_MIDI_CTL_MSB_GENERAL_PURPOSE2 = 0x11,  /**< General Purpose 2 */
+	LV2_MIDI_CTL_MSB_GENERAL_PURPOSE3 = 0x12,  /**< General Purpose 3 */
+	LV2_MIDI_CTL_MSB_GENERAL_PURPOSE4 = 0x13,  /**< General Purpose 4 */
+	LV2_MIDI_CTL_LSB_BANK             = 0x20,  /**< Bank Selection */
+	LV2_MIDI_CTL_LSB_MODWHEEL         = 0x21,  /**< Modulation */
+	LV2_MIDI_CTL_LSB_BREATH           = 0x22,  /**< Breath */
+	LV2_MIDI_CTL_LSB_FOOT             = 0x24,  /**< Foot */
+	LV2_MIDI_CTL_LSB_PORTAMENTO_TIME  = 0x25,  /**< Portamento Time */
+	LV2_MIDI_CTL_LSB_DATA_ENTRY       = 0x26,  /**< Data Entry */
+	LV2_MIDI_CTL_LSB_MAIN_VOLUME      = 0x27,  /**< Main Volume */
+	LV2_MIDI_CTL_LSB_BALANCE          = 0x28,  /**< Balance */
+	LV2_MIDI_CTL_LSB_PAN              = 0x2A,  /**< Panpot */
+	LV2_MIDI_CTL_LSB_EXPRESSION       = 0x2B,  /**< Expression */
+	LV2_MIDI_CTL_LSB_EFFECT1          = 0x2C,  /**< Effect1 */
+	LV2_MIDI_CTL_LSB_EFFECT2          = 0x2D,  /**< Effect2 */
+	LV2_MIDI_CTL_LSB_GENERAL_PURPOSE1 = 0x30,  /**< General Purpose 1 */
+	LV2_MIDI_CTL_LSB_GENERAL_PURPOSE2 = 0x31,  /**< General Purpose 2 */
+	LV2_MIDI_CTL_LSB_GENERAL_PURPOSE3 = 0x32,  /**< General Purpose 3 */
+	LV2_MIDI_CTL_LSB_GENERAL_PURPOSE4 = 0x33,  /**< General Purpose 4 */
+	LV2_MIDI_CTL_SUSTAIN              = 0x40,  /**< Sustain Pedal */
+	LV2_MIDI_CTL_PORTAMENTO           = 0x41,  /**< Portamento */
+	LV2_MIDI_CTL_SOSTENUTO            = 0x42,  /**< Sostenuto */
+	LV2_MIDI_CTL_SOFT_PEDAL           = 0x43,  /**< Soft Pedal */
+	LV2_MIDI_CTL_LEGATO_FOOTSWITCH    = 0x44,  /**< Legato Foot Switch */
+	LV2_MIDI_CTL_HOLD2                = 0x45,  /**< Hold2 */
+	LV2_MIDI_CTL_SC1_SOUND_VARIATION  = 0x46,  /**< SC1 Sound Variation */
+	LV2_MIDI_CTL_SC2_TIMBRE           = 0x47,  /**< SC2 Timbre */
+	LV2_MIDI_CTL_SC3_RELEASE_TIME     = 0x48,  /**< SC3 Release Time */
+	LV2_MIDI_CTL_SC4_ATTACK_TIME      = 0x49,  /**< SC4 Attack Time */
+	LV2_MIDI_CTL_SC5_BRIGHTNESS       = 0x4A,  /**< SC5 Brightness */
+	LV2_MIDI_CTL_SC6                  = 0x4B,  /**< SC6 */
+	LV2_MIDI_CTL_SC7                  = 0x4C,  /**< SC7 */
+	LV2_MIDI_CTL_SC8                  = 0x4D,  /**< SC8 */
+	LV2_MIDI_CTL_SC9                  = 0x4E,  /**< SC9 */
+	LV2_MIDI_CTL_SC10                 = 0x4F,  /**< SC10 */
+	LV2_MIDI_CTL_GENERAL_PURPOSE5     = 0x50,  /**< General Purpose 5 */
+	LV2_MIDI_CTL_GENERAL_PURPOSE6     = 0x51,  /**< General Purpose 6 */
+	LV2_MIDI_CTL_GENERAL_PURPOSE7     = 0x52,  /**< General Purpose 7 */
+	LV2_MIDI_CTL_GENERAL_PURPOSE8     = 0x53,  /**< General Purpose 8 */
+	LV2_MIDI_CTL_PORTAMENTO_CONTROL   = 0x54,  /**< Portamento Control */
+	LV2_MIDI_CTL_E1_REVERB_DEPTH      = 0x5B,  /**< E1 Reverb Depth */
+	LV2_MIDI_CTL_E2_TREMOLO_DEPTH     = 0x5C,  /**< E2 Tremolo Depth */
+	LV2_MIDI_CTL_E3_CHORUS_DEPTH      = 0x5D,  /**< E3 Chorus Depth */
+	LV2_MIDI_CTL_E4_DETUNE_DEPTH      = 0x5E,  /**< E4 Detune Depth */
+	LV2_MIDI_CTL_E5_PHASER_DEPTH      = 0x5F,  /**< E5 Phaser Depth */
+	LV2_MIDI_CTL_DATA_INCREMENT       = 0x60,  /**< Data Increment */
+	LV2_MIDI_CTL_DATA_DECREMENT       = 0x61,  /**< Data Decrement */
+	LV2_MIDI_CTL_NRPN_LSB             = 0x62,  /**< Non-registered Parameter Number */
+	LV2_MIDI_CTL_NRPN_MSB             = 0x63,  /**< Non-registered Parameter Number */
+	LV2_MIDI_CTL_RPN_LSB              = 0x64,  /**< Registered Parameter Number */
+	LV2_MIDI_CTL_RPN_MSB              = 0x65,  /**< Registered Parameter Number */
+	LV2_MIDI_CTL_ALL_SOUNDS_OFF       = 0x78,  /**< All Sounds Off */
+	LV2_MIDI_CTL_RESET_CONTROLLERS    = 0x79,  /**< Reset Controllers */
+	LV2_MIDI_CTL_LOCAL_CONTROL_SWITCH = 0x7A,  /**< Local Control Switch */
+	LV2_MIDI_CTL_ALL_NOTES_OFF        = 0x7B,  /**< All Notes Off */
+	LV2_MIDI_CTL_OMNI_OFF             = 0x7C,  /**< Omni Off */
+	LV2_MIDI_CTL_OMNI_ON              = 0x7D,  /**< Omni On */
+	LV2_MIDI_CTL_MONO1                = 0x7E,  /**< Mono1 */
+	LV2_MIDI_CTL_MONO2                = 0x7F   /**< Mono2 */
+} LV2_Midi_Controller;
+
+/**
+   Return true iff @p msg is a MIDI voice message (which has a channel).
+*/
+static inline bool
+lv2_midi_is_voice_message(const uint8_t* msg) {
+	return msg[0] >= 0x80 && msg[0] < 0xF0;
+}
+
+/**
+   Return true iff @p msg is a MIDI system message (which has no channel).
+*/
+static inline bool
+lv2_midi_is_system_message(const uint8_t* msg) {
+	switch (msg[0]) {
+	case 0xF4: case 0xF5: case 0xF7: case 0xF9: case 0xFD:
+		return false;
+	default:
+		return (msg[0] & 0xF0) == 0xF0;
+	}
+}
+
+/**
+   Return the type of a MIDI message.
+   @param msg Pointer to the start (status byte) of a MIDI message.
+*/
+static inline LV2_Midi_Message_Type
+lv2_midi_message_type(const uint8_t* msg) {
+	if (lv2_midi_is_voice_message(msg)) {
+		return (LV2_Midi_Message_Type)(msg[0] & 0xF0);
+	} else if (lv2_midi_is_system_message(msg)) {
+		return (LV2_Midi_Message_Type)msg[0];
+	} else {
+		return LV2_MIDI_MSG_INVALID;
+	}
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
 #endif  /* LV2_MIDI_H */
diff --git a/lv2/lv2plug.in/ns/ext/midi/midi.ttl b/lv2/lv2plug.in/ns/ext/midi/midi.ttl
index a8015b6..a9153e8 100644
--- a/lv2/lv2plug.in/ns/ext/midi/midi.ttl
+++ b/lv2/lv2plug.in/ns/ext/midi/midi.ttl
@@ -221,7 +221,7 @@ midi:SystemExclusive
 	a rdfs:Class ;
 	rdfs:subClassOf midi:SystemMessage ;
 	rdfs:label "System Exclusive Message" ;
-	midi:statusMask "F0"^^xsd:hexBinary .
+	midi:status "F0"^^xsd:hexBinary .
 
 midi:SystemMessage
 	a rdfs:Class ;
@@ -234,12 +234,6 @@ midi:SystemRealtime
 	rdfs:subClassOf midi:SystemMessage ;
 	rdfs:label "System Realtime Message" .
 
-midi:Tick
-	a rdfs:Class ;
-	rdfs:subClassOf midi:SystemRealtime ;
-	rdfs:label "Tick Message" ;
-	midi:status "F9"^^xsd:hexBinary .
-
 midi:TuneRequest
 	a rdfs:Class ;
 	rdfs:subClassOf midi:SystemCommon ;