1 files changed, 124 insertions, 0 deletions
diff --git a/src/encoder/null_encoder.c b/src/encoder/null_encoder.c
new file mode 100644
index 000000000..bf7e61c3b
--- /dev/null
+++ b/src/encoder/null_encoder.c
@@ -0,0 +1,124 @@
+/*
+ * Copyright (C) 2003-2010 The Music Player Daemon Project
+ * http://www.musicpd.org
+ *
+ * This program 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.
+ *
+ * This program 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 this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "config.h"
+#include "encoder_api.h"
+#include "encoder_plugin.h"
+#include "pcm_buffer.h"
+
+#include <assert.h>
+#include <string.h>
+
+struct null_encoder {
+	struct encoder encoder;
+
+	struct pcm_buffer buffer;
+	size_t buffer_length;
+};
+
+extern const struct encoder_plugin null_encoder_plugin;
+
+static inline GQuark
+null_encoder_quark(void)
+{
+	return g_quark_from_static_string("null_encoder");
+}
+
+static struct encoder *
+null_encoder_init(G_GNUC_UNUSED const struct config_param *param,
+		  G_GNUC_UNUSED GError **error)
+{
+	struct null_encoder *encoder;
+
+	encoder = g_new(struct null_encoder, 1);
+	encoder_struct_init(&encoder->encoder, &null_encoder_plugin);
+
+	return &encoder->encoder;
+}
+
+static void
+null_encoder_finish(struct encoder *_encoder)
+{
+	struct null_encoder *encoder = (struct null_encoder *)_encoder;
+
+	g_free(encoder);
+}
+
+static void
+null_encoder_close(struct encoder *_encoder)
+{
+	struct null_encoder *encoder = (struct null_encoder *)_encoder;
+
+	pcm_buffer_deinit(&encoder->buffer);
+}
+
+
+static bool
+null_encoder_open(struct encoder *_encoder,
+		  G_GNUC_UNUSED struct audio_format *audio_format,
+		  G_GNUC_UNUSED GError **error)
+{
+	struct null_encoder *encoder = (struct null_encoder *)_encoder;
+
+	encoder->buffer_length = 0;
+	pcm_buffer_init(&encoder->buffer);
+
+	return true;
+}
+
+static bool
+null_encoder_write(struct encoder *_encoder,
+		   const void *data, size_t length,
+		   G_GNUC_UNUSED GError **error)
+{
+	struct null_encoder *encoder = (struct null_encoder *)_encoder;
+	char *buffer = pcm_buffer_get(&encoder->buffer, encoder->buffer_length + length);
+
+	memcpy(buffer+encoder->buffer_length, data, length);
+
+	encoder->buffer_length += length;
+	return true;
+}
+
+static size_t
+null_encoder_read(struct encoder *_encoder, void *dest, size_t length)
+{
+	struct null_encoder *encoder = (struct null_encoder *)_encoder;
+	char *buffer = pcm_buffer_get(&encoder->buffer, encoder->buffer_length);
+
+	if (length > encoder->buffer_length)
+		length = encoder->buffer_length;
+
+	memcpy(dest, buffer, length);
+
+	encoder->buffer_length -= length;
+	memmove(buffer, buffer + length, encoder->buffer_length);
+
+	return length;
+}
+
+const struct encoder_plugin null_encoder_plugin = {
+	.name = "null",
+	.init = null_encoder_init,
+	.finish = null_encoder_finish,
+	.open = null_encoder_open,
+	.close = null_encoder_close,
+	.write = null_encoder_write,
+	.read = null_encoder_read,
+};