From a2792bd09212eed55bba1aa30dc09043a6955486 Mon Sep 17 00:00:00 2001
From: David Robillard <d@drobilla.net>
Date: Sun, 31 Aug 2014 01:24:57 +0000
Subject: Use float sequences for sample-accurate control ports.

git-svn-id: http://svn.drobilla.net/lad/trunk/ingen@5462 a436a847-0d15-0410-975c-d299462d15a1
---
 src/server/BlockImpl.cpp | 46 +++++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 43 insertions(+), 3 deletions(-)

(limited to 'src/server/BlockImpl.cpp')

diff --git a/src/server/BlockImpl.cpp b/src/server/BlockImpl.cpp
index 0cae55a2..069ecdfa 100644
--- a/src/server/BlockImpl.cpp
+++ b/src/server/BlockImpl.cpp
@@ -155,6 +155,45 @@ BlockImpl::pre_process(ProcessContext& context)
 	}
 }
 
+void
+BlockImpl::process(ProcessContext& context)
+{
+	pre_process(context);
+
+	ProcessContext subcontext(context);
+	for (SampleCount offset = 0; offset < context.nframes();) {
+		// Find earliest offset of a value change
+		SampleCount chunk_end = context.nframes();
+		for (uint32_t i = 0; _ports && i < _ports->size(); ++i) {
+			PortImpl* const port = _ports->at(i);
+			if (port->type() == PortType::CONTROL && port->is_input()) {
+				const SampleCount o = port->next_value_offset(
+					offset, context.nframes());
+				if (o < chunk_end) {
+					chunk_end = o;
+				}
+			}
+		}
+
+		// Slice context into a chunk from now until the next change
+		subcontext.slice(offset, chunk_end - offset);
+
+		// Prepare port buffers for reading, converting/mixing if necessary
+		for (uint32_t i = 0; _ports && i < _ports->size(); ++i) {
+			_ports->at(i)->connect_buffers(offset);
+			_ports->at(i)->pre_run(subcontext);
+		}
+
+		// Run the chunk
+		run(subcontext);
+
+		offset = chunk_end;
+		subcontext.slice(offset, chunk_end - offset);
+	}
+	 
+	post_process(context);
+}
+
 void
 BlockImpl::post_process(ProcessContext& context)
 {
@@ -165,9 +204,10 @@ BlockImpl::post_process(ProcessContext& context)
 }
 
 void
-BlockImpl::set_port_buffer(uint32_t  voice,
-                           uint32_t  port_num,
-                           BufferRef buf)
+BlockImpl::set_port_buffer(uint32_t    voice,
+                           uint32_t    port_num,
+                           BufferRef   buf,
+                           SampleCount offset)
 {
 	/*std::cout << path() << " set port " << port_num << " voice " << voice
 	  << " buffer " << buf << " offset " << offset << std::endl;*/
-- 
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