Import bluez-utils-3.36 revision history

1 files changed, 222 insertions, 0 deletions

diff --git a/audio/gstsbcparse.c b/audio/gstsbcparse.c
new file mode 100644
index 00000000..4521c563
--- /dev/null
+++ b/audio/gstsbcparse.c
@@ -0,0 +1,222 @@
+/*
+ *
+ *  BlueZ - Bluetooth protocol stack for Linux
+ *
+ *  Copyright (C) 2004-2008  Marcel Holtmann <marcel@holtmann.org>
+ *
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Lesser General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2.1 of the License, or (at your option) any later version.
+ *
+ *  This library 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
+ *  Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public
+ *  License along with this library; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <string.h>
+
+#include "gstsbcparse.h"
+#include "gstsbcutil.h"
+
+GST_DEBUG_CATEGORY_STATIC(sbc_parse_debug);
+#define GST_CAT_DEFAULT sbc_parse_debug
+
+GST_BOILERPLATE(GstSbcParse, gst_sbc_parse, GstElement, GST_TYPE_ELEMENT);
+
+static const GstElementDetails sbc_parse_details =
+	GST_ELEMENT_DETAILS("Bluetooth SBC parser",
+				"Codec/Parser/Audio",
+				"Parse a SBC audio stream",
+				"Marcel Holtmann <marcel@holtmann.org>");
+
+static GstStaticPadTemplate sbc_parse_sink_factory =
+	GST_STATIC_PAD_TEMPLATE("sink", GST_PAD_SINK, GST_PAD_ALWAYS,
+		GST_STATIC_CAPS("audio/x-sbc,"
+				"parsed = (boolean) false"));
+
+static GstStaticPadTemplate sbc_parse_src_factory =
+	GST_STATIC_PAD_TEMPLATE("src", GST_PAD_SRC, GST_PAD_ALWAYS,
+		GST_STATIC_CAPS("audio/x-sbc, "
+				"rate = (int) { 16000, 32000, 44100, 48000 }, "
+				"channels = (int) [ 1, 2 ], "
+				"mode = (string) { \"mono\", \"dual\", \"stereo\", \"joint\" }, "
+				"blocks = (int) { 4, 8, 12, 16 }, "
+				"subbands = (int) { 4, 8 }, "
+				"allocation = (string) { \"snr\", \"loudness\" },"
+				"bitpool = (int) [ 2, 64 ],"
+				"parsed = (boolean) true"));
+
+static GstFlowReturn sbc_parse_chain(GstPad *pad, GstBuffer *buffer)
+{
+	GstSbcParse *parse = GST_SBC_PARSE(gst_pad_get_parent(pad));
+	GstFlowReturn res = GST_FLOW_OK;
+	guint size, offset = 0;
+	guint8 *data;
+	GstClockTime timestamp;
+
+	timestamp = GST_BUFFER_TIMESTAMP(buffer);
+
+	/* FIXME use a gstadpter */
+	if (parse->buffer) {
+		GstBuffer *temp;
+		temp = buffer;
+		buffer = gst_buffer_span(parse->buffer, 0, buffer,
+			GST_BUFFER_SIZE(parse->buffer)
+			+ GST_BUFFER_SIZE(buffer));
+		gst_buffer_unref(parse->buffer);
+		gst_buffer_unref(temp);
+		parse->buffer = NULL;
+	}
+
+	data = GST_BUFFER_DATA(buffer);
+	size = GST_BUFFER_SIZE(buffer);
+
+	while (offset < size) {
+		GstBuffer *output;
+		int consumed;
+
+		consumed = sbc_parse(&parse->new_sbc, data + offset,
+					size - offset);
+		if (consumed <= 0)
+			break;
+
+		if (parse->first_parsing || (memcmp(&parse->sbc,
+				&parse->new_sbc, sizeof(sbc_t)) != 0)) {
+
+			memcpy(&parse->sbc, &parse->new_sbc, sizeof(sbc_t));
+			if (parse->outcaps != NULL)
+				gst_caps_unref(parse->outcaps);
+
+			parse->outcaps = gst_sbc_parse_caps_from_sbc(
+						&parse->sbc);
+
+			parse->first_parsing = FALSE;
+		}
+
+		res = gst_pad_alloc_buffer_and_set_caps(parse->srcpad,
+						GST_BUFFER_OFFSET_NONE,
+						consumed, parse->outcaps, &output);
+
+		if (res != GST_FLOW_OK)
+			goto done;
+
+		memcpy(GST_BUFFER_DATA(output), data + offset, consumed);
+
+		res = gst_pad_push(parse->srcpad, output);
+		if (res != GST_FLOW_OK)
+			goto done;
+
+		offset += consumed;
+	}
+
+	if (offset < size)
+		parse->buffer = gst_buffer_create_sub(buffer,
+							offset, size - offset);
+
+done:
+	gst_buffer_unref(buffer);
+	gst_object_unref(parse);
+
+	return res;
+}
+
+static GstStateChangeReturn sbc_parse_change_state(GstElement *element,
+						GstStateChange transition)
+{
+	GstSbcParse *parse = GST_SBC_PARSE(element);
+
+	switch (transition) {
+	case GST_STATE_CHANGE_READY_TO_PAUSED:
+		GST_DEBUG("Setup subband codec");
+
+		parse->channels = -1;
+		parse->rate = -1;
+		parse->first_parsing = TRUE;
+
+		sbc_init(&parse->sbc, 0);
+		break;
+
+	case GST_STATE_CHANGE_PAUSED_TO_READY:
+		GST_DEBUG("Finish subband codec");
+
+		if (parse->buffer) {
+			gst_buffer_unref(parse->buffer);
+			parse->buffer = NULL;
+		}
+		if (parse->outcaps != NULL) {
+			gst_caps_unref(parse->outcaps);
+			parse->outcaps = NULL;
+		}
+
+		sbc_finish(&parse->sbc);
+		break;
+
+	default:
+		break;
+	}
+
+	return parent_class->change_state(element, transition);
+}
+
+static void gst_sbc_parse_base_init(gpointer g_class)
+{
+	GstElementClass *element_class = GST_ELEMENT_CLASS(g_class);
+
+	gst_element_class_add_pad_template(element_class,
+		gst_static_pad_template_get(&sbc_parse_sink_factory));
+
+	gst_element_class_add_pad_template(element_class,
+		gst_static_pad_template_get(&sbc_parse_src_factory));
+
+	gst_element_class_set_details(element_class, &sbc_parse_details);
+}
+
+static void gst_sbc_parse_class_init(GstSbcParseClass *klass)
+{
+	GstElementClass *element_class = GST_ELEMENT_CLASS(klass);
+
+	parent_class = g_type_class_peek_parent(klass);
+
+	element_class->change_state = GST_DEBUG_FUNCPTR(sbc_parse_change_state);
+
+	GST_DEBUG_CATEGORY_INIT(sbc_parse_debug, "sbcparse", 0,
+				"SBC parsing element");
+}
+
+static void gst_sbc_parse_init(GstSbcParse *self, GstSbcParseClass *klass)
+{
+	self->sinkpad = gst_pad_new_from_static_template(
+		&sbc_parse_sink_factory, "sink");
+	gst_pad_set_chain_function(self->sinkpad,
+		GST_DEBUG_FUNCPTR(sbc_parse_chain));
+	gst_element_add_pad(GST_ELEMENT(self), self->sinkpad);
+
+	self->srcpad = gst_pad_new_from_static_template(
+		&sbc_parse_src_factory, "src");
+	gst_element_add_pad(GST_ELEMENT(self), self->srcpad);
+
+	self->outcaps = NULL;
+	self->buffer = NULL;
+	self->channels = -1;
+	self->rate = -1;
+	self->first_parsing = TRUE;
+}
+
+gboolean gst_sbc_parse_plugin_init (GstPlugin * plugin)
+{
+	return gst_element_register (plugin, "sbcparse",
+			GST_RANK_NONE, GST_TYPE_SBC_PARSE);
+}
+