Order book chapters in build script rather than by bundle name.

1 files changed, 0 insertions, 352 deletions

diff --git a/plugins/eg03-metro.lv2/metro.c b/plugins/eg03-metro.lv2/metro.c
deleted file mode 100644
index 5e484b7..0000000
--- a/plugins/eg03-metro.lv2/metro.c
+++ /dev/null
@@ -1,352 +0,0 @@
-/*
-  LV2 Metronome Example Plugin
-  Copyright 2012 David Robillard <d@drobilla.net>
-
-  Permission to use, copy, modify, and/or distribute this software for any
-  purpose with or without fee is hereby granted, provided that the above
-  copyright notice and this permission notice appear in all copies.
-
-  THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
-  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
-  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
-  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
-  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
-  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
-  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-*/
-
-#include <math.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#ifndef __cplusplus
-#    include <stdbool.h>
-#endif
-
-#include "lv2/lv2plug.in/ns/ext/atom/atom.h"
-#include "lv2/lv2plug.in/ns/ext/atom/util.h"
-#include "lv2/lv2plug.in/ns/ext/time/time.h"
-#include "lv2/lv2plug.in/ns/ext/urid/urid.h"
-#include "lv2/lv2plug.in/ns/lv2core/lv2.h"
-
-#ifndef M_PI
-#    define M_PI 3.14159265
-#endif
-
-#define EG_METRO_URI "http://lv2plug.in/plugins/eg-metro"
-
-typedef struct {
-	LV2_URID atom_Blank;
-	LV2_URID atom_Float;
-	LV2_URID atom_Object;
-	LV2_URID atom_Path;
-	LV2_URID atom_Resource;
-	LV2_URID atom_Sequence;
-	LV2_URID time_Position;
-	LV2_URID time_barBeat;
-	LV2_URID time_beatsPerMinute;
-	LV2_URID time_speed;
-} MetroURIs;
-
-static const double attack_s = 0.005;
-static const double decay_s  = 0.075;
-
-enum {
-	METRO_CONTROL = 0,
-	METRO_OUT     = 1
-};
-
-/** During execution this plugin can be in one of 3 states: */
-typedef enum {
-	STATE_ATTACK,  // Envelope rising
-	STATE_DECAY,   // Envelope lowering
-	STATE_OFF      // Silent
-} State;
-
-/**
-   This plugin must keep track of more state than previous examples to be able
-   to render audio.  The basic idea is to generate a single cycle of a sine
-   wave which is conceptually played continuously.  The 'tick' is generated by
-   enveloping the amplitude so there is a short attack/decay peak around a
-   tick, and silence the rest of the time.
-   
-   This example uses a simple AD envelope with fixed parameters.  A more
-   sophisticated implementation might use a more advanced envelope and allow
-   the user to modify these parameters, the frequency of the wave, and so on.
-   */
-typedef struct {
-	LV2_URID_Map* map;   // URID map feature
-	MetroURIs     uris;  // Cache of mapped URIDs
-
-	struct {
-		LV2_Atom_Sequence* control;
-		float*             output;
-	} ports;
-
-	// Variables to keep track of the tempo information sent by the host
-	double rate;   // Sample rate
-	float  bpm;    // Beats per minute (tempo)
-	float  speed;  // Transport speed (usually 0=stop, 1=play)
-
-	uint32_t elapsed_len;  // Frames since the start of the last click
-	uint32_t wave_offset;  // Current play offset in the wave
-	State    state;        // Current play state
-
-	// One cycle of a sine wave
-	float*   wave;
-	uint32_t wave_len;
-
-	// Envelope parameters
-	uint32_t attack_len;
-	uint32_t decay_len;
-} Metro;
-
-static void
-connect_port(LV2_Handle instance,
-             uint32_t   port,
-             void*      data)
-{
-	Metro* self = (Metro*)instance;
-
-	switch (port) {
-	case METRO_CONTROL:
-		self->ports.control = (LV2_Atom_Sequence*)data;
-		break;
-	case METRO_OUT:
-		self->ports.output = (float*)data;
-		break;
-	default:
-		break;
-	}
-}
-
-/**
-   The activate() method resets the state completely, so the wave offset is
-   zero and the envelope is off.
-*/
-static void
-activate(LV2_Handle instance)
-{
-	Metro* self = (Metro*)instance;
-
-	self->elapsed_len = 0;
-	self->wave_offset = 0;
-	self->state       = STATE_OFF;
-}
-
-/**
-   This plugin does a bit more work in instantiate() than the previous
-   examples.  The tempo updates from the host contain several URIs, so those
-   are mapped, and the sine wave to be played needs to be generated based on
-   the current sample rate.
-*/
-static LV2_Handle
-instantiate(const LV2_Descriptor*     descriptor,
-            double                    rate,
-            const char*               path,
-            const LV2_Feature* const* features)
-{
-	Metro* self = (Metro*)calloc(1, sizeof(Metro));
-	if (!self) {
-		return NULL;
-	}
-
-	// Scan host features for URID map
-	LV2_URID_Map* map = NULL;
-	for (int i = 0; features[i]; ++i) {
-		if (!strcmp(features[i]->URI, LV2_URID_URI "#map")) {
-			map = (LV2_URID_Map*)features[i]->data;
-		}
-	}
-	if (!map) {
-		fprintf(stderr, "Host does not support urid:map.\n");
-		free(self);
-		return NULL;
-	}
-
-	// Map URIS
-	MetroURIs* const uris = &self->uris;
-	self->map = map;
-	uris->atom_Blank          = map->map(map->handle, LV2_ATOM__Blank);
-	uris->atom_Float          = map->map(map->handle, LV2_ATOM__Float);
-	uris->atom_Object         = map->map(map->handle, LV2_ATOM__Object);
-	uris->atom_Path           = map->map(map->handle, LV2_ATOM__Path);
-	uris->atom_Resource       = map->map(map->handle, LV2_ATOM__Resource);
-	uris->atom_Sequence       = map->map(map->handle, LV2_ATOM__Sequence);
-	uris->time_Position       = map->map(map->handle, LV2_TIME__Position);
-	uris->time_barBeat        = map->map(map->handle, LV2_TIME__barBeat);
-	uris->time_beatsPerMinute = map->map(map->handle, LV2_TIME__beatsPerMinute);
-	uris->time_speed          = map->map(map->handle, LV2_TIME__speed);
-
-	// Initialise instance fields
-	self->rate       = rate;
-	self->bpm        = 120.0f;
-	self->attack_len = (uint32_t)(attack_s * rate);
-	self->decay_len  = (uint32_t)(decay_s * rate);
-	self->state      = STATE_OFF;
-
-	// Generate one cycle of a sine wave at the desired frequency
-	const double freq = 440.0 * 2.0;
-	const double amp  = 0.5;
-	self->wave_len = (uint32_t)(rate / freq);
-	self->wave     = (float*)malloc(self->wave_len * sizeof(float));
-	for (uint32_t i = 0; i < self->wave_len; ++i) {
-		self->wave[i] = (float)(sin(i * 2 * M_PI * freq / rate) * amp);
-	}
-
-	return (LV2_Handle)self;
-}
-
-static void
-cleanup(LV2_Handle instance)
-{
-	free(instance);
-}
-
-/**
-   Play back audio for the range [begin..end) relative to this cycle.  This is
-   called by run() in-between events to output audio up until the current time.
-*/
-static void
-play(Metro* self, uint32_t begin, uint32_t end)
-{
-	float* const   output          = self->ports.output;
-	const uint32_t frames_per_beat = 60.0f / self->bpm * self->rate;
-
-	if (self->speed == 0.0f) {
-		memset(output, 0, (end - begin) * sizeof(float));
-		return;
-	}
-
-	for (uint32_t i = begin; i < end; ++i) {
-		switch (self->state) {
-		case STATE_ATTACK:
-			// Amplitude increases from 0..1 until attack_len
-			output[i] = self->wave[self->wave_offset] *
-				self->elapsed_len / (float)self->attack_len;
-			if (self->elapsed_len >= self->attack_len) {
-				self->state = STATE_DECAY;
-			}
-			break;
-		case STATE_DECAY:
-			// Amplitude decreases from 1..0 until attack_len + decay_len
-			output[i] = 0.0f;
-			output[i] = self->wave[self->wave_offset] *
-				(1 - ((self->elapsed_len - self->attack_len) /
-				      (float)self->decay_len));
-			if (self->elapsed_len >= self->attack_len + self->decay_len) {
-				self->state = STATE_OFF;
-			}
-			break;
-		case STATE_OFF:
-			output[i] = 0.0f;
-		}
-
-		// We continuously play the sine wave regardless of envelope
-		self->wave_offset = (self->wave_offset + 1) % self->wave_len;
-
-		// Update elapsed time and start attack if necessary
-		if (++self->elapsed_len == frames_per_beat) {
-			self->state       = STATE_ATTACK;
-			self->elapsed_len = 0;
-		}
-	}
-}
-
-/**
-   Update the current position based on a host message.  This is called by
-   run() when a time:Position is received.
-*/
-static void
-update_position(Metro* self, const LV2_Atom_Object* obj)
-{
-	const MetroURIs* uris = &self->uris;
-
-	// Received new transport position/speed
-	LV2_Atom *beat = NULL, *bpm = NULL, *speed = NULL;
-	lv2_atom_object_get(obj,
-	                    uris->time_barBeat, &beat,
-	                    uris->time_beatsPerMinute, &bpm,
-	                    uris->time_speed, &speed,
-	                    NULL);
-	if (bpm && bpm->type == uris->atom_Float) {
-		// Tempo changed, update BPM
-		self->bpm = ((LV2_Atom_Float*)bpm)->body;
-	}
-	if (speed && speed->type == uris->atom_Float) {
-		// Speed changed, e.g. 0 (stop) to 1 (play)
-		self->speed = ((LV2_Atom_Float*)speed)->body;
-	}
-	if (beat && beat->type == uris->atom_Float) {
-		// Received a beat position, synchronise
-		// This hard sync may cause clicks, a real plugin would be more graceful
-		const float frames_per_beat = 60.0f / self->bpm * self->rate;
-		const float bar_beats       = ((LV2_Atom_Float*)beat)->body;
-		const float beat_beats      = bar_beats - floorf(bar_beats);
-		self->elapsed_len           = beat_beats * frames_per_beat;
-		if (self->elapsed_len < self->attack_len) {
-			self->state = STATE_ATTACK;
-		} else if (self->elapsed_len < self->attack_len + self->decay_len) {
-			self->state = STATE_DECAY;
-		} else {
-			self->state = STATE_OFF;
-		}
-	}
-}
-
-static void
-run(LV2_Handle instance, uint32_t sample_count)
-{
-	Metro*           self = (Metro*)instance;
-	const MetroURIs* uris = &self->uris;
-
-	// Work forwards in time frame by frame, handling events as we go
-	const LV2_Atom_Sequence* in     = self->ports.control;
-	uint32_t                 last_t = 0;
-	for (const LV2_Atom_Event* ev = lv2_atom_sequence_begin(&in->body);
-	     !lv2_atom_sequence_is_end(&in->body, in->atom.size, ev);
-	     ev = lv2_atom_sequence_next(ev)) {
-
-		// Play the click for the time slice from last_t until now
-		play(self, last_t, ev->time.frames);
-
-		// Check if this event is an Object
-		// (or deprecated Blank to tolerate old hosts)
-		if (ev->body.type == uris->atom_Object ||
-		    ev->body.type == uris->atom_Blank) {
-			const LV2_Atom_Object* obj = (const LV2_Atom_Object*)&ev->body;
-			if (obj->body.otype == uris->time_Position) {
-				// Received position information, update
-				update_position(self, obj);
-			}
-		}
-
-		// Update time for next iteration and move to next event
-		last_t = ev->time.frames;
-	}
-
-	// Play for remainder of cycle
-	play(self, last_t, sample_count);
-}
-
-static const LV2_Descriptor descriptor = {
-	EG_METRO_URI,
-	instantiate,
-	connect_port,
-	activate,
-	run,
-	NULL,  // deactivate,
-	cleanup,
-	NULL,  // extension_data
-};
-
-LV2_SYMBOL_EXPORT const LV2_Descriptor*
-lv2_descriptor(uint32_t index)
-{
-	switch (index) {
-	case 0:
-		return &descriptor;
-	default:
-		return NULL;
-	}
-}