1 files changed, 116 insertions, 0 deletions
diff --git a/src/server/LV2Block.hpp b/src/server/LV2Block.hpp
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+++ b/src/server/LV2Block.hpp
@@ -0,0 +1,116 @@
+/*
+  This file is part of Ingen.
+  Copyright 2007-2012 David Robillard <http://drobilla.net/>
+
+  Ingen is free software: you can redistribute it and/or modify it under the
+  terms of the GNU Affero General Public License as published by the Free
+  Software Foundation, either version 3 of the License, or any later version.
+
+  Ingen is distributed in the hope that it will be useful, but WITHOUT ANY
+  WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+  A PARTICULAR PURPOSE.  See the GNU Affero General Public License for details.
+
+  You should have received a copy of the GNU Affero General Public License
+  along with Ingen.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef INGEN_ENGINE_LV2BLOCK_HPP
+#define INGEN_ENGINE_LV2BLOCK_HPP
+
+#include "lilv/lilv.h"
+#include "lv2/lv2plug.in/ns/ext/worker/worker.h"
+#include "raul/Disposable.hpp"
+
+#include "BufferRef.hpp"
+#include "BlockImpl.hpp"
+#include "ingen/LV2Features.hpp"
+#include "types.hpp"
+
+namespace Ingen {
+namespace Server {
+
+class LV2Plugin;
+
+/** An instance of a LV2 plugin.
+ *
+ * \ingroup engine
+ */
+class LV2Block : public BlockImpl
+{
+public:
+	LV2Block(LV2Plugin*          plugin,
+	        const Raul::Symbol& symbol,
+	        bool                polyphonic,
+	        PatchImpl*          parent,
+	        SampleRate          srate);
+
+	~LV2Block();
+
+	bool instantiate(BufferFactory& bufs);
+
+	bool prepare_poly(BufferFactory& bufs, uint32_t poly);
+	bool apply_poly(ProcessContext& context, Raul::Maid& maid, uint32_t poly);
+
+	void activate(BufferFactory& bufs);
+	void deactivate();
+
+	void work(uint32_t size, const void* data);
+
+	void process(ProcessContext& context);
+
+	void set_port_buffer(uint32_t  voice,
+	                     uint32_t  port_num,
+	                     BufferRef buf);
+
+protected:
+	SharedPtr<LilvInstance> make_instance(URIs&      uris,
+	                                      SampleRate rate,
+	                                      uint32_t   voice,
+	                                      bool       preparing);
+
+	inline LilvInstance* instance(uint32_t voice) {
+		return (LilvInstance*)(*_instances)[voice].get();
+	}
+
+	typedef Raul::Array< SharedPtr<void> > Instances;
+
+	struct Response : public Raul::Disposable
+	                , public Raul::Noncopyable
+	                , public boost::intrusive::slist_base_hook<>
+	{
+		inline Response(uint32_t s, const void* d)
+			: size(s)
+			, data(malloc(s))
+		{
+			memcpy(data, d, s);
+		}
+
+		~Response() {
+			free(data);
+		}
+
+		const uint32_t size;
+		void* const    data;
+	};
+
+	typedef boost::intrusive::slist<Response,
+	                                boost::intrusive::cache_last<true>,
+	                                boost::intrusive::constant_time_size<false>
+	                                > Responses;
+
+	static LV2_Worker_Status work_respond(
+		LV2_Worker_Respond_Handle handle, uint32_t size, const void* data);
+
+	LV2Plugin*                           _lv2_plugin;
+	Instances*                           _instances;
+	Instances*                           _prepared_instances;
+	const LV2_Worker_Interface*          _worker_iface;
+	Responses                            _responses;
+	SharedPtr<LV2Features::FeatureArray> _features;
+};
+
+} // namespace Server
+} // namespace Ingen
+
+#endif // INGEN_ENGINE_LV2BLOCK_HPP
+