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authorMarcel Holtmann <marcel@holtmann.org>2007-08-26 13:59:05 +0000
committerMarcel Holtmann <marcel@holtmann.org>2007-08-26 13:59:05 +0000
commit7e8ae7f5bd23a425674180df138d3dcc3b21afb6 (patch)
tree4f62a54f32e4b339a6b4b01dec255a8143bf7472 /audio
parentd9bccae488ef82fc0e1d927b30db9228bfd91169 (diff)
Implement full parsing support
Diffstat (limited to 'audio')
-rw-r--r--audio/Makefile.am3
-rw-r--r--audio/gstbluetooth.c5
-rw-r--r--audio/gstsbcparse.c194
-rw-r--r--audio/gstsbcparse.h61
4 files changed, 262 insertions, 1 deletions
diff --git a/audio/Makefile.am b/audio/Makefile.am
index 6d1e75d8..7d23d83a 100644
--- a/audio/Makefile.am
+++ b/audio/Makefile.am
@@ -51,8 +51,9 @@ gstreamerdir = $(libdir)/gstreamer-0.10
gstreamer_LTLIBRARIES = libgstbluetooth.la
libgstbluetooth_la_SOURCES = gstbluetooth.c ipc.h \
- gstsbcdec.h gstsbcdec.c \
gstsbcenc.h gstsbcenc.c \
+ gstsbcdec.h gstsbcdec.c \
+ gstsbcparse.h gstsbcparse.c \
gsta2dpsink.h gsta2dpsink.c
libgstbluetooth_la_LDFLAGS = -module -avoid-version -export-dynamic
libgstbluetooth_la_LIBADD = @SBC_LIBS@ @GSTREAMER_LIBS@ -lgstaudio-0.10
diff --git a/audio/gstbluetooth.c b/audio/gstbluetooth.c
index 8c07bae3..8b2ca76e 100644
--- a/audio/gstbluetooth.c
+++ b/audio/gstbluetooth.c
@@ -27,6 +27,7 @@
#include "gstsbcenc.h"
#include "gstsbcdec.h"
+#include "gstsbcparse.h"
#include "gsta2dpsink.h"
static GstStaticCaps sbc_caps = GST_STATIC_CAPS("audio/x-sbc");
@@ -62,6 +63,10 @@ static gboolean plugin_init(GstPlugin *plugin)
GST_RANK_PRIMARY, GST_TYPE_SBC_DEC) == FALSE)
return FALSE;
+ if (gst_element_register(plugin, "sbcparse",
+ GST_RANK_PRIMARY, GST_TYPE_SBC_PARSE) == FALSE)
+ return FALSE;
+
if (gst_element_register(plugin, "a2dpsink",
GST_RANK_PRIMARY, GST_TYPE_A2DP_SINK) == FALSE)
return FALSE;
diff --git a/audio/gstsbcparse.c b/audio/gstsbcparse.c
new file mode 100644
index 00000000..5097a85f
--- /dev/null
+++ b/audio/gstsbcparse.c
@@ -0,0 +1,194 @@
+/*
+ *
+ * BlueZ - Bluetooth protocol stack for Linux
+ *
+ * Copyright (C) 2004-2007 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"
+
+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"));
+
+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 }"));
+
+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);
+
+ if (parse->buffer) {
+ GstBuffer *temp = buffer;
+ buffer = gst_buffer_span(parse->buffer, 0, buffer,
+ GST_BUFFER_SIZE(parse->buffer) + GST_BUFFER_SIZE(buffer));
+ gst_buffer_unref(temp);
+ gst_buffer_unref(parse->buffer);
+ parse->buffer = NULL;
+ }
+
+ data = GST_BUFFER_DATA(buffer);
+ size = GST_BUFFER_SIZE(buffer);
+
+ while (offset < size) {
+ GstBuffer *output;
+ GstPadTemplate *template;
+ GstCaps *caps, *temp;
+ int consumed;
+
+ consumed = sbc_parse(&parse->sbc, data + offset, size - offset);
+ if (consumed <= 0)
+ break;
+
+ caps = gst_caps_new_simple("audio/x-sbc",
+ "rate", G_TYPE_INT, parse->sbc.rate,
+ "channels", G_TYPE_INT, parse->sbc.channels,
+ NULL);
+
+ template = gst_static_pad_template_get(&sbc_parse_src_factory);
+
+ temp = gst_caps_intersect(caps,
+ gst_pad_template_get_caps(template));
+
+ gst_caps_unref(caps);
+
+ res = gst_pad_alloc_buffer_and_set_caps(parse->srcpad,
+ GST_BUFFER_OFFSET_NONE,
+ consumed, temp, &output);
+
+ gst_caps_unref(temp);
+
+ 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");
+ if (parse->buffer) {
+ gst_buffer_unref(parse->buffer);
+ parse->buffer = NULL;
+ }
+ 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;
+ }
+ 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);
+}
diff --git a/audio/gstsbcparse.h b/audio/gstsbcparse.h
new file mode 100644
index 00000000..ceaf2197
--- /dev/null
+++ b/audio/gstsbcparse.h
@@ -0,0 +1,61 @@
+/*
+ *
+ * BlueZ - Bluetooth protocol stack for Linux
+ *
+ * Copyright (C) 2004-2007 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
+ *
+ */
+
+#include <gst/gst.h>
+
+#include "sbc.h"
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_SBC_PARSE \
+ (gst_sbc_parse_get_type())
+#define GST_SBC_PARSE(obj) \
+ (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_SBC_PARSE,GstSbcParse))
+#define GST_SBC_PARSE_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_SBC_PARSE,GstSbcParseClass))
+#define GST_IS_SBC_PARSE(obj) \
+ (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_SBC_PARSE))
+#define GST_IS_SBC_PARSE_CLASS(obj) \
+ (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_SBC_PARSE))
+
+typedef struct _GstSbcParse GstSbcParse;
+typedef struct _GstSbcParseClass GstSbcParseClass;
+
+struct _GstSbcParse {
+ GstElement element;
+
+ GstPad *sinkpad;
+ GstPad *srcpad;
+
+ GstBuffer *buffer;
+
+ sbc_t sbc;
+};
+
+struct _GstSbcParseClass {
+ GstElementClass parent_class;
+};
+
+GType gst_sbc_parse_get_type(void);
+
+G_END_DECLS