mirror of
https://git.kernel.org/pub/scm/bluetooth/bluez.git
synced 2024-11-26 05:34:23 +08:00
Implement full parsing support
This commit is contained in:
Marcel Holtmann
parent
d9bccae488
commit
7e8ae7f5bd
@ -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
|
||||
|
||||
@ -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;
|
||||
|
||||
194
audio/gstsbcparse.c
Normal file
194
audio/gstsbcparse.c
Normal file
@ -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);
|
||||
}
|
||||
61
audio/gstsbcparse.h
Normal file
61
audio/gstsbcparse.h
Normal file
@ -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
|
||||
Loading…
Reference in New Issue
Block a user