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-rw-r--r--lv2/lv2.cc313
1 files changed, 27 insertions, 286 deletions
diff --git a/lv2/lv2.cc b/lv2/lv2.cc
index 3aeb5f0..41a5d48 100644
--- a/lv2/lv2.cc
+++ b/lv2/lv2.cc
@@ -25,24 +25,20 @@
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#include <lv2/lv2plug.in/ns/lv2core/lv2.h>
+#include <lv2/lv2plug.in/ns/ext/atom/atom.h>
#include <stdlib.h>
#include <string.h>
#include "lv2_gui.h"
-
#include "lv2_instance.h"
#include <hugin.hpp>
-#include <lv2/lv2plug.in/ns/ext/atom/atom.h>
-
-#define NS_ATOM "http://lv2plug.in/ns/ext/atom#"
-#define NS_DG "http://drumgizmo.org/lv2/atom#"
+#define DRUMGIZMO_URI "http://drumgizmo.org/lv2"
+#define NS_DG DRUMGIZMO_URI "/atom#"
-/*
- * Stuff to handle DrumGizmo* transmission from instance to GUI.
- */
+// Stuff to handle DrumGizmo* transmission from instance to GUI.
static LV2_DrumGizmo_Descriptor dg_descriptor;
static DrumGizmo *dg_get_pci(LV2_Handle instance)
@@ -51,56 +47,6 @@ static DrumGizmo *dg_get_pci(LV2_Handle instance)
return dglv2->dg;
}
-/*
- * Stuff to save/restore plugin state.
- */
-/*
-void dg_save(LV2_Handle instance,
- LV2_State_Store_Function store,
- void* callback_data,
- uint32_t flags,
- const LV2_Feature *const * features)
-{
- DGLV2 *dglv2 = (DGLV2 *)instance;
- printf("dg_save\n");
-
- std::string config = dglv2->dg->configString();
- printf("%s\n", config.c_str());
-
- store(callback_data,
- dglv2->urimap->uri_to_id(dglv2->urimap->callback_data,
- NULL, NS_DG "config"),
- config.data(), config.length(),
- dglv2->urimap->uri_to_id(dglv2->urimap->callback_data,
- NULL, NS_ATOM "String"),
- LV2_STATE_IS_POD | LV2_STATE_IS_PORTABLE);
-}
-
-void dg_restore(LV2_Handle instance,
- LV2_State_Retrieve_Function retrieve,
- void* callback_data,
- uint32_t flags,
- const LV2_Feature *const * features)
-{
- DGLV2 *dglv2 = (DGLV2 *)instance;
- printf("dg_restore\n");
-
- size_t size;
- uint32_t type;
- // uint32_t flags;
-
- const char* data =
- (const char*)retrieve(callback_data,
- dglv2->urimap->uri_to_id(dglv2->urimap->callback_data,
- NULL, NS_DG "config"),
- &size, &type, &flags);
- std::string config;
- config.append(data, size);
- dglv2->dg->setConfigString(config);
-
- dglv2->in->loadMidiMap(dglv2->dg->midimapfile);
-}
-*/
LV2_State_Status
dg_save(LV2_Handle instance,
LV2_State_Store_Function store,
@@ -109,32 +55,22 @@ dg_save(LV2_Handle instance,
const LV2_Feature *const * features)
{
DGLV2 *dglv2 = (DGLV2 *)instance;
- printf("dg_save\n");
+
+ if(!dglv2 || !dglv2->map || !dglv2->map->map) {
+ // Missing urid feature?
+ return LV2_STATE_ERR_NO_FEATURE;
+ }
std::string config = dglv2->dg->configString();
- printf("%s\n", config.c_str());
store(handle,
- dglv2->urimap->uri_to_id(dglv2->urimap->callback_data,
- NULL, NS_DG "config"),
+ dglv2->map->map(dglv2->map->handle, NS_DG "config"),
config.c_str(),
config.length() + 1, // Careful! Need space for terminator
- dglv2->urimap->uri_to_id(dglv2->urimap->callback_data,
- NULL, NS_ATOM "chunk"),
+ dglv2->map->map(dglv2->map->handle, LV2_ATOM__Chunk),
LV2_STATE_IS_POD | LV2_STATE_IS_PORTABLE);
-/*
- MyPlugin* plugin = (MyPlugin*)instance;
- const char* greeting = plugin->state.greeting;
-
- store(handle,
- plugin->uris.my_greeting,
- greeting,
- strlen(greeting) + 1, // Careful! Need space for terminator
- plugin->uris.atom_String,
- LV2_STATE_IS_POD | LV2_STATE_IS_PORTABLE);
-*/
- printf("dg_save\n");
- return LV2_STATE_SUCCESS;
+
+ return LV2_STATE_SUCCESS;
}
LV2_State_Status
@@ -145,43 +81,27 @@ dg_restore(LV2_Handle instance,
const LV2_Feature *const * features)
{
DGLV2 *dglv2 = (DGLV2 *)instance;
- DEBUG(lv2, "dg_restore begin\n");
- size_t size;
- uint32_t type;
- // uint32_t flags;
+ if(!dglv2 || !dglv2->map || !dglv2->map->map) {
+ // Missing urid feature?
+ return LV2_STATE_ERR_NO_FEATURE;
+ }
+
+ size_t size;
+ uint32_t type;
const char* data =
(const char*)retrieve(handle,
- dglv2->urimap->uri_to_id(dglv2->urimap->callback_data,
- NULL, NS_DG "config"),
+ dglv2->map->map(dglv2->map->handle, NS_DG "config"),
&size, &type, &flags);
+
DEBUG(lv2, "Config string size: %d, data*: %p\n", (int)size, data);
if(data && size) {
std::string config;
config.append(data, size - 1);
dglv2->dg->setConfigString(config);
- //dglv2->in->loadMidiMap(dglv2->dg->midimapfile);
}
-
- /*
- MyPlugin* plugin = (MyPlugin*)instance;
-
- size_t size;
- uint32_t type;
- uint32_t flags;
- const char* greeting = retrieve(
- handle, plugin->uris.my_greeting, &size, &type, &flags);
-
- if (greeting) {
- free(plugin->state->greeting);
- plugin->state->greeting = strdup(greeting);
- } else {
- plugin->state->greeting = strdup(DEFAULT_GREETING);
- }
- */
- DEBUG(lv2, "dg_restore done\n");
return LV2_STATE_SUCCESS;
}
@@ -191,42 +111,6 @@ static LV2_State_Interface dg_persist = {
dg_restore
};
-/** A globally unique, case-sensitive identifier for this plugin type.
- *
- * All plugins with the same URI MUST be compatible in terms of 'port
- * signature', meaning they have the same number of ports, same port
- * shortnames, and roughly the same functionality. URIs should
- * probably contain a version number (or similar) for this reason.
- *
- * Rationale: When serializing session/patch/etc files, hosts MUST
- * refer to a loaded plugin by the plugin URI only. In the future
- * loading a plugin with this URI MUST yield a plugin with the
- * same ports (etc) which is 100% compatible. */
-#define DRUMGIZMO_URI "http://drumgizmo.org/lv2"
-
-/** Function pointer that instantiates a plugin.
- *
- * A handle is returned indicating the new plugin instance. The
- * instantiation function accepts a sample rate as a parameter as well
- * as the plugin descriptor from which this instantiate function was
- * found. This function must return NULL if instantiation fails.
- *
- * bundle_path is a string of the path to the LV2 bundle which contains
- * this plugin binary. It MUST include the trailing directory separator
- * (e.g. '/') so that BundlePath + filename gives the path to a file
- * in the bundle.
- *
- * features is a NULL terminated array of LV2_Feature structs which
- * represent the features the host supports. Plugins may refuse to
- * instantiate if required features are not found here (however hosts
- * SHOULD NOT use this as a discovery mechanism, instead reading the
- * data file before attempting to instantiate the plugin). This array
- * must always exist; if a host has no features, it MUST pass a single
- * element array containing NULL (to simplify plugins).
- *
- * Note that instance initialisation should generally occur in
- * activate() rather than here. If a host calls instantiate, it MUST
- * call cleanup() at some point in the future. */
LV2_Handle instantiate(const struct _LV2_Descriptor *descriptor,
double sample_rate,
const char *bundle_path,
@@ -234,14 +118,10 @@ LV2_Handle instantiate(const struct _LV2_Descriptor *descriptor,
{
DGLV2 *dglv2 = new DGLV2;
- dglv2->urimap = NULL;
+ dglv2->map = NULL;
for (int i = 0 ; features[i] ; i++) {
- printf("DG: feature: %s\n", features[i]->URI);
- if (!strcmp(features[i]->URI, LV2_URI_MAP_URI)) {
- dglv2->urimap = (LV2_URI_Map_Feature*)features[i]->data;
- }
- if (!strcmp(features[i]->URI, LV2_STATE__makePath)) {
- dglv2->makepath = (LV2_State_Make_Path*)features[i]->data;
+ if (!strcmp(features[i]->URI, LV2_URID_URI "#map")) {
+ dglv2->map = (LV2_URID_Map*)features[i]->data;
}
}
@@ -253,57 +133,12 @@ LV2_Handle instantiate(const struct _LV2_Descriptor *descriptor,
dglv2->buffer = NULL;
dglv2->buffer_size = 0;
- /*
- char* path = dglv2->makepath->path(dglv2->makepath->handle,
- "hello.txt");
- FILE* myfile = fopen(path, "w");
- fprintf(myfile, "world");
- fclose(myfile);
- */
-
dglv2->dg = new DrumGizmo(dglv2->out, dglv2->in);
dglv2->dg->setSamplerate(sample_rate);
- // dglv2->dg->loadkit(getenv("DRUMGIZMO_DRUMKIT"));
- // dglv2->dg->init(true);
return (LV2_Handle)dglv2;
}
-/** Function pointer that connects a port on a plugin instance to a memory
- * location where the block of data for the port will be read/written.
- *
- * The data location is expected to be of the type defined in the
- * plugin's data file (e.g. an array of float for an lv2:AudioPort).
- * Memory issues are managed by the host. The plugin must read/write
- * the data at these locations every time run() is called, data
- * present at the time of this connection call MUST NOT be
- * considered meaningful.
- *
- * The host MUST NOT try to connect a data buffer to a port index
- * that is not defined in the RDF data for the plugin. If it does,
- * the plugin's behaviour is undefined.
- *
- * connect_port() may be called more than once for a plugin instance
- * to allow the host to change the buffers that the plugin is reading
- * or writing. These calls may be made before or after activate()
- * or deactivate() calls. Note that there may be realtime constraints
- * on connect_port (see lv2:hardRTCapable in lv2.ttl).
- *
- * connect_port() MUST be called at least once for each port before
- * run() is called. The plugin must pay careful attention to the block
- * size passed to the run function as the block allocated may only just
- * be large enough to contain the block of data (typically samples), and
- * is not guaranteed to be constant.
- *
- * Plugin writers should be aware that the host may elect to use the
- * same buffer for more than one port and even use the same buffer for
- * both input and output (see lv2:inPlaceBroken in lv2.ttl).
- * However, overlapped buffers or use of a single buffer for both
- * audio and control data may result in unexpected behaviour.
- *
- * If the plugin has the feature lv2:hardRTCapable then there are
- * various things that the plugin MUST NOT do within the connect_port()
- * function (see lv2.ttl). */
void connect_port(LV2_Handle instance,
uint32_t port,
void *data_location)
@@ -320,99 +155,31 @@ void connect_port(LV2_Handle instance,
}
}
-/** Function pointer that initialises a plugin instance and activates
- * it for use.
- *
- * This is separated from instantiate() to aid real-time support and so
- * that hosts can reinitialise a plugin instance by calling deactivate()
- * and then activate(). In this case the plugin instance must reset all
- * state information dependent on the history of the plugin instance
- * except for any data locations provided by connect_port(). If there
- * is nothing for activate() to do then the plugin writer may provide
- * a NULL rather than an empty function.
- *
- * When present, hosts MUST call this function once before run()
- * is called for the first time. This call SHOULD be made as close
- * to the run() call as possible and indicates to real-time plugins
- * that they are now live, however plugins MUST NOT rely on a prompt
- * call to run() after activate(). activate() may not be called again
- * unless deactivate() is called first (after which activate() may be
- * called again, followed by deactivate, etc. etc.). If a host calls
- * activate, it MUST call deactivate at some point in the future.
- *
- * Note that connect_port() may be called before or after a call to
- * activate(). */
void activate(LV2_Handle instance)
{
+ // We don't really need to do anything here.
DGLV2 *dglv2 = (DGLV2 *)instance;
- //dglv2->dg->run();
(void)dglv2;
}
-/** Function pointer that runs a plugin instance for a block.
- *
- * Two parameters are required: the first is a handle to the particular
- * instance to be run and the second indicates the block size (in
- * samples) for which the plugin instance may run.
- *
- * Note that if an activate() function exists then it must be called
- * before run(). If deactivate() is called for a plugin instance then
- * the plugin instance may not be reused until activate() has been
- * called again.
- *
- * If the plugin has the feature lv2:hardRTCapable then there are
- * various things that the plugin MUST NOT do within the run()
- * function (see lv2.ttl). */
void run(LV2_Handle instance,
uint32_t sample_count)
{
static size_t pos = 0;
DGLV2 *dglv2 = (DGLV2 *)instance;
- // The buffer is not used anymore - declared NULL in 'instantiate'.
- /*
- if(dglv2->buffer_size != sample_count) {
- if(dglv2->buffer) free(dglv2->buffer);
- dglv2->buffer_size = sample_count;
- dglv2->buffer = (sample_t*)malloc(sizeof(sample_t) * dglv2->buffer_size);
- printf("(Re)allocate buffer: %d samples\n", dglv2->buffer_size);
- }
- */
dglv2->dg->run(pos, dglv2->buffer, sample_count);
pos += sample_count;
}
-/** This is the counterpart to activate() (see above). If there is
- * nothing for deactivate() to do then the plugin writer may provide
- * a NULL rather than an empty function.
- *
- * Hosts must deactivate all activated units after they have been run()
- * for the last time. This call SHOULD be made as close to the last
- * run() call as possible and indicates to real-time plugins that
- * they are no longer live, however plugins MUST NOT rely on prompt
- * deactivation. Note that connect_port() may be called before or
- * after a call to deactivate().
- *
- * Note that deactivation is not similar to pausing as the plugin
- * instance will be reinitialised when activate() is called to reuse it.
- * Hosts MUST NOT call deactivate() unless activate() was previously
- * called. */
void deactivate(LV2_Handle instance)
{
+ // We don't really need to do anything here.
DGLV2 *dglv2 = (DGLV2 *)instance;
dglv2->dg->stop();
}
-/** This is the counterpart to instantiate() (see above). Once an instance
- * of a plugin has been finished with it can be deleted using this
- * function. The instance handle passed ceases to be valid after
- * this call.
- *
- * If activate() was called for a plugin instance then a corresponding
- * call to deactivate() MUST be made before cleanup() is called.
- * Hosts MUST NOT call cleanup() unless instantiate() was previously
- * called. */
void cleanup(LV2_Handle instance)
{
DGLV2 *dglv2 = (DGLV2 *)instance;
@@ -421,34 +188,8 @@ void cleanup(LV2_Handle instance)
delete dglv2->out;
}
-/** Function pointer that can be used to return additional instance data for
- * a plugin defined by some extenion (e.g. a struct containing additional
- * function pointers).
- *
- * The actual type and meaning of the returned object MUST be specified
- * precisely by the extension if it defines any extra data. If a particular
- * extension does not define extra instance data, this function MUST return
- * NULL for that extension's URI. If a plugin does not support any
- * extensions that define extra instance data, this function pointer may be
- * set to NULL rather than providing an empty function.
- *
- * The only parameter is the URI of the extension. The plugin MUST return
- * NULL if it does not support the extension, but hosts SHOULD NOT use this
- * as a discovery method (e.g. hosts should only call this function for
- * extensions known to be supported by the plugin from the data file).
- *
- * The host is never responsible for freeing the returned value.
- *
- * NOTE: This function should return a struct (likely containing function
- * pointers) and NOT a direct function pointer. Standard C and C++ do not
- * allow type casts from void* to a function pointer type. To provide
- * additional functions a struct should be returned containing the extra
- * function pointers (which is valid standard code, and a much better idea
- * for extensibility anyway). */
const void* extension_data(const char *uri)
{
- printf("extension_data(%s)\n", uri);
-
if(!strcmp(uri, PLUGIN_INSTANCE_URI)) return &dg_descriptor;
if(!strcmp(uri, LV2_STATE__interface)) return &dg_persist;
return NULL;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-01 12:18:34 +0000