Rearrange encoder threading.

Soon we'll add a new encoder type, and the existing structure was
already creaking a bit at the seams while handling local and remote
encodes.  Here we split out an encoder thread and introduce the concept
of a "sync" thread (which blocks while the encoding is happening).
Later we'll have another type which submits the encode request to a
GPU and receives the reply back later.

1 files changed, 58 insertions, 0 deletions

diff --git a/src/lib/j2k_encoder_thread.cc b/src/lib/j2k_encoder_thread.cc
new file mode 100644
index 000000000..d0e8a439c
--- /dev/null
+++ b/src/lib/j2k_encoder_thread.cc
@@ -0,0 +1,58 @@
+/*
+    Copyright (C) 2023 Carl Hetherington <cth@carlh.net>
+
+    This file is part of DCP-o-matic.
+
+    DCP-o-matic is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    DCP-o-matic 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 General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with DCP-o-matic.  If not, see <http://www.gnu.org/licenses/>.
+
+*/
+
+
+#include "dcp_video.h"
+#include "dcpomatic_log.h"
+#include "j2k_encoder.h"
+#include "j2k_encoder_thread.h"
+
+
+J2KEncoderThread::J2KEncoderThread(J2KEncoder& encoder)
+	: _encoder(encoder)
+{
+
+}
+
+
+void
+J2KEncoderThread::start()
+{
+	_thread = boost::thread(boost::bind(&J2KEncoderThread::run, this));
+#ifdef DCPOMATIC_LINUX
+	pthread_setname_np(_thread.native_handle(), "encode-worker");
+#endif
+}
+
+
+void
+J2KEncoderThread::stop()
+{
+	_thread.interrupt();
+	try {
+		_thread.join();
+	} catch (std::exception& e) {
+		LOG_ERROR("join() threw an exception: %1", e.what());
+	} catch (...) {
+		LOG_ERROR_NC("join() threw an exception");
+	}
+}
+
+