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-rw-r--r--ingen/AtomForgeSink.hpp97
-rw-r--r--ingen/AtomReader.hpp1
-rw-r--r--ingen/AtomWriter.hpp6
3 files changed, 100 insertions, 4 deletions
diff --git a/ingen/AtomForgeSink.hpp b/ingen/AtomForgeSink.hpp
new file mode 100644
index 00000000..5520906c
--- /dev/null
+++ b/ingen/AtomForgeSink.hpp
@@ -0,0 +1,97 @@
+/*
+ This file is part of Ingen.
+ Copyright 2007-2017 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_ATOMFORGESINK_HPP
+#define INGEN_ATOMFORGESINK_HPP
+
+#include <cstdlib>
+
+#include "lv2/lv2plug.in/ns/ext/atom/forge.h"
+
+namespace Ingen {
+
+/** A resizing sink for LV2_Atom_Forge. */
+class AtomForgeSink
+{
+public:
+ AtomForgeSink(LV2_Atom_Forge* forge = nullptr)
+ : _capacity(8 * sizeof(LV2_Atom))
+ , _size(0)
+ , _buf((LV2_Atom*)calloc(8, sizeof(LV2_Atom)))
+ {
+ if (forge) {
+ set_forge_sink(forge);
+ }
+ }
+
+ ~AtomForgeSink() { free(_buf); }
+
+ void set_forge_sink(LV2_Atom_Forge* forge) {
+ lv2_atom_forge_set_sink(forge, c_append, c_deref, this);
+ }
+
+ /** Append some data and return a reference to its start. */
+ intptr_t append(const void* buf, uint32_t len) {
+ // Record offset of the start of this write (+1 to avoid NULL)
+ const intptr_t ref = _size + 1;
+
+ // Update size and reallocate if necessary
+ if (lv2_atom_pad_size(_size + len) > _capacity) {
+ _capacity = lv2_atom_pad_size(_size + len);
+ _buf = (LV2_Atom*)realloc(_buf, _capacity);
+ }
+
+ // Append new data
+ memcpy((uint8_t*)_buf + _size, buf, len);
+ _size += len;
+ return ref;
+ }
+
+ /** Dereference a reference previously returned by append. */
+ LV2_Atom* deref(intptr_t ref) {
+ /* Make some assumptions and do unnecessary math to appease
+ -Wcast-align. This is questionable at best, though the forge should
+ only dereference references to aligned atoms. */
+ assert((ref - 1) % sizeof(LV2_Atom) == 0);
+ return (LV2_Atom*)(_buf + (ref - 1) / sizeof(LV2_Atom));
+
+ // Alternatively:
+ // return (LV2_Atom*)((uint8_t*)_buf + ref - 1);
+ }
+
+ const LV2_Atom* atom() const { return _buf; }
+
+ void clear() { _buf->type = 0; _buf->size = 0; _size = 0; }
+
+ static LV2_Atom_Forge_Ref
+ c_append(void* handle, const void* buf, uint32_t len) {
+ return ((AtomForgeSink*)handle)->append(buf, len);
+ }
+
+ static LV2_Atom*
+ c_deref(void* handle, LV2_Atom_Forge_Ref ref) {
+ return ((AtomForgeSink*)handle)->deref(ref);
+ }
+
+private:
+ size_t _capacity;
+ size_t _size;
+ LV2_Atom* _buf;
+};
+
+} // namespace Ingen
+
+#endif // INGEN_ATOMFORGESINK_HPP
diff --git a/ingen/AtomReader.hpp b/ingen/AtomReader.hpp
index 09aa672a..1c1dea5b 100644
--- a/ingen/AtomReader.hpp
+++ b/ingen/AtomReader.hpp
@@ -23,7 +23,6 @@
#include "ingen/AtomSink.hpp"
#include "ingen/URIs.hpp"
#include "ingen/ingen.h"
-#include "serd/serd.h"
namespace Ingen {
diff --git a/ingen/AtomWriter.hpp b/ingen/AtomWriter.hpp
index 9ea5fa27..4246e884 100644
--- a/ingen/AtomWriter.hpp
+++ b/ingen/AtomWriter.hpp
@@ -1,6 +1,6 @@
/*
This file is part of Ingen.
- Copyright 2007-2016 David Robillard <http://drobilla.net/>
+ Copyright 2007-2017 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
@@ -19,11 +19,11 @@
#include <string>
+#include "ingen/AtomForgeSink.hpp"
#include "ingen/Interface.hpp"
#include "ingen/URIs.hpp"
#include "ingen/ingen.h"
#include "lv2/lv2plug.in/ns/ext/atom/forge.h"
-#include "serd/serd.h"
namespace Ingen {
@@ -98,7 +98,7 @@ private:
URIMap& _map;
URIs& _uris;
AtomSink& _sink;
- SerdChunk _out;
+ AtomForgeSink _out;
LV2_Atom_Forge _forge;
int32_t _id;
};