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bluez/audio/gstavdtpsink.c
Chan-yeol Park 5c092d37f3 audio: Add SBC NULL check for GST AVDTP signaling 
Due to RF condition or headset malfunctioning, gst audio plug-in could
not get SBC (mandatory codec) information.
2012-04-16 13:15:19 +03:00

2039 lines
51 KiB
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/*
*
* BlueZ - Bluetooth protocol stack for Linux
*
* Copyright (C) 2004-2010 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 <unistd.h>
#include <sys/un.h>
#include <sys/socket.h>
#include <fcntl.h>
#include <pthread.h>
#include <netinet/in.h>
#include <bluetooth/bluetooth.h>
#include <gst/rtp/gstrtpbuffer.h>
#include <dbus/dbus.h>
#include "ipc.h"
#include "rtp.h"
#include "a2dp-codecs.h"
#include "gstpragma.h"
#include "gstavdtpsink.h"
GST_DEBUG_CATEGORY_STATIC(avdtp_sink_debug);
#define GST_CAT_DEFAULT avdtp_sink_debug
#define BUFFER_SIZE 2048
#define TEMPLATE_MAX_BITPOOL 64
#define CRC_PROTECTED 1
#define CRC_UNPROTECTED 0
#define DEFAULT_AUTOCONNECT TRUE
#define GST_AVDTP_SINK_MUTEX_LOCK(s) G_STMT_START { \
g_mutex_lock(s->sink_lock); \
} G_STMT_END
#define GST_AVDTP_SINK_MUTEX_UNLOCK(s) G_STMT_START { \
g_mutex_unlock(s->sink_lock); \
} G_STMT_END
#ifndef DBUS_TYPE_UNIX_FD
#define DBUS_TYPE_UNIX_FD -1
#endif
struct bluetooth_data {
struct bt_get_capabilities_rsp *caps; /* Bluetooth device caps */
guint link_mtu;
DBusConnection *conn;
guint8 codec; /* Bluetooth transport configuration */
gchar *uuid;
guint8 *config;
gint config_size;
gchar buffer[BUFFER_SIZE]; /* Codec transfer buffer */
};
#define IS_SBC(n) (strcmp((n), "audio/x-sbc") == 0)
#define IS_MPEG_AUDIO(n) (strcmp((n), "audio/mpeg") == 0)
enum {
PROP_0,
PROP_DEVICE,
PROP_AUTOCONNECT,
PROP_TRANSPORT
};
GST_BOILERPLATE(GstAvdtpSink, gst_avdtp_sink, GstBaseSink,
GST_TYPE_BASE_SINK);
static const GstElementDetails avdtp_sink_details =
GST_ELEMENT_DETAILS("Bluetooth AVDTP sink",
"Sink/Audio",
"Plays audio to an A2DP device",
"Marcel Holtmann <marcel@holtmann.org>");
static GstStaticPadTemplate avdtp_sink_factory =
GST_STATIC_PAD_TEMPLATE("sink", GST_PAD_SINK, GST_PAD_ALWAYS,
GST_STATIC_CAPS("application/x-rtp, "
"media = (string) \"audio\","
"payload = (int) "
GST_RTP_PAYLOAD_DYNAMIC_STRING ", "
"clock-rate = (int) { 16000, 32000, "
"44100, 48000 }, "
"encoding-name = (string) \"SBC\"; "
"application/x-rtp, "
"media = (string) \"audio\", "
"payload = (int) "
GST_RTP_PAYLOAD_MPA_STRING ", "
"clock-rate = (int) 90000; "
"application/x-rtp, "
"media = (string) \"audio\", "
"payload = (int) "
GST_RTP_PAYLOAD_DYNAMIC_STRING ", "
"clock-rate = (int) 90000, "
"encoding-name = (string) \"MPA\""
));
static int gst_avdtp_sink_audioservice_send(GstAvdtpSink *self,
const bt_audio_msg_header_t *msg);
static int gst_avdtp_sink_audioservice_expect(GstAvdtpSink *self,
bt_audio_msg_header_t *outmsg,
guint8 expected_name);
static void gst_avdtp_sink_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(&avdtp_sink_factory));
gst_element_class_set_details(element_class, &avdtp_sink_details);
}
static void gst_avdtp_sink_transport_release(GstAvdtpSink *self)
{
DBusMessage *msg;
const char *access_type = "w";
msg = dbus_message_new_method_call("org.bluez", self->transport,
"org.bluez.MediaTransport",
"Release");
dbus_message_append_args(msg, DBUS_TYPE_STRING, &access_type,
DBUS_TYPE_INVALID);
dbus_connection_send(self->data->conn, msg, NULL);
dbus_message_unref(msg);
}
static gboolean gst_avdtp_sink_stop(GstBaseSink *basesink)
{
GstAvdtpSink *self = GST_AVDTP_SINK(basesink);
GST_INFO_OBJECT(self, "stop");
if (self->watch_id != 0) {
g_source_remove(self->watch_id);
self->watch_id = 0;
}
if (self->server) {
bt_audio_service_close(g_io_channel_unix_get_fd(self->server));
g_io_channel_unref(self->server);
self->server = NULL;
}
if (self->stream) {
g_io_channel_shutdown(self->stream, TRUE, NULL);
g_io_channel_unref(self->stream);
self->stream = NULL;
}
if (self->data) {
if (self->transport)
gst_avdtp_sink_transport_release(self);
if (self->data->conn)
dbus_connection_unref(self->data->conn);
g_free(self->data);
self->data = NULL;
}
if (self->stream_caps) {
gst_caps_unref(self->stream_caps);
self->stream_caps = NULL;
}
if (self->dev_caps) {
gst_caps_unref(self->dev_caps);
self->dev_caps = NULL;
}
return TRUE;
}
static void gst_avdtp_sink_finalize(GObject *object)
{
GstAvdtpSink *self = GST_AVDTP_SINK(object);
if (self->data)
gst_avdtp_sink_stop(GST_BASE_SINK(self));
if (self->device)
g_free(self->device);
if (self->transport)
g_free(self->transport);
g_mutex_free(self->sink_lock);
G_OBJECT_CLASS(parent_class)->finalize(object);
}
static void gst_avdtp_sink_set_property(GObject *object, guint prop_id,
const GValue *value, GParamSpec *pspec)
{
GstAvdtpSink *sink = GST_AVDTP_SINK(object);
switch (prop_id) {
case PROP_DEVICE:
if (sink->device)
g_free(sink->device);
sink->device = g_value_dup_string(value);
break;
case PROP_AUTOCONNECT:
sink->autoconnect = g_value_get_boolean(value);
break;
case PROP_TRANSPORT:
if (sink->transport)
g_free(sink->transport);
sink->transport = g_value_dup_string(value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
break;
}
}
static void gst_avdtp_sink_get_property(GObject *object, guint prop_id,
GValue *value, GParamSpec *pspec)
{
GstAvdtpSink *sink = GST_AVDTP_SINK(object);
switch (prop_id) {
case PROP_DEVICE:
g_value_set_string(value, sink->device);
break;
case PROP_AUTOCONNECT:
g_value_set_boolean(value, sink->autoconnect);
break;
case PROP_TRANSPORT:
g_value_set_string(value, sink->transport);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
break;
}
}
static gint gst_avdtp_sink_bluetooth_recvmsg_fd(GstAvdtpSink *sink)
{
int err, ret;
ret = bt_audio_service_get_data_fd(
g_io_channel_unix_get_fd(sink->server));
if (ret < 0) {
err = -errno;
GST_ERROR_OBJECT(sink, "Unable to receive fd: %s (%d)",
strerror(-err), -err);
return err;
}
sink->stream = g_io_channel_unix_new(ret);
g_io_channel_set_encoding(sink->stream, NULL, NULL);
GST_DEBUG_OBJECT(sink, "stream_fd=%d", ret);
return 0;
}
static codec_capabilities_t *gst_avdtp_find_caps(GstAvdtpSink *sink,
uint8_t codec_type)
{
struct bt_get_capabilities_rsp *rsp = sink->data->caps;
codec_capabilities_t *codec = (void *) rsp->data;
int bytes_left = rsp->h.length - sizeof(*rsp);
while (bytes_left > 0) {
if ((codec->type == codec_type) &&
!(codec->lock & BT_WRITE_LOCK))
break;
bytes_left -= codec->length;
codec = (void *) codec + codec->length;
}
if (bytes_left <= 0)
return NULL;
return codec;
}
static gboolean gst_avdtp_sink_init_sbc_pkt_conf(GstAvdtpSink *sink,
GstCaps *caps,
sbc_capabilities_t *pkt)
{
sbc_capabilities_t *cfg;
const GValue *value = NULL;
const char *pref, *name;
gint rate, subbands, blocks;
GstStructure *structure = gst_caps_get_structure(caps, 0);
cfg = (void *) gst_avdtp_find_caps(sink, BT_A2DP_SBC_SINK);
name = gst_structure_get_name(structure);
if (!(IS_SBC(name))) {
GST_ERROR_OBJECT(sink, "Unexpected format %s, "
"was expecting sbc", name);
return FALSE;
}
value = gst_structure_get_value(structure, "rate");
rate = g_value_get_int(value);
if (rate == 44100)
cfg->frequency = BT_SBC_SAMPLING_FREQ_44100;
else if (rate == 48000)
cfg->frequency = BT_SBC_SAMPLING_FREQ_48000;
else if (rate == 32000)
cfg->frequency = BT_SBC_SAMPLING_FREQ_32000;
else if (rate == 16000)
cfg->frequency = BT_SBC_SAMPLING_FREQ_16000;
else {
GST_ERROR_OBJECT(sink, "Invalid rate while setting caps");
return FALSE;
}
value = gst_structure_get_value(structure, "mode");
pref = g_value_get_string(value);
if (strcmp(pref, "mono") == 0)
cfg->channel_mode = BT_A2DP_CHANNEL_MODE_MONO;
else if (strcmp(pref, "dual") == 0)
cfg->channel_mode = BT_A2DP_CHANNEL_MODE_DUAL_CHANNEL;
else if (strcmp(pref, "stereo") == 0)
cfg->channel_mode = BT_A2DP_CHANNEL_MODE_STEREO;
else if (strcmp(pref, "joint") == 0)
cfg->channel_mode = BT_A2DP_CHANNEL_MODE_JOINT_STEREO;
else {
GST_ERROR_OBJECT(sink, "Invalid mode %s", pref);
return FALSE;
}
value = gst_structure_get_value(structure, "allocation");
pref = g_value_get_string(value);
if (strcmp(pref, "loudness") == 0)
cfg->allocation_method = BT_A2DP_ALLOCATION_LOUDNESS;
else if (strcmp(pref, "snr") == 0)
cfg->allocation_method = BT_A2DP_ALLOCATION_SNR;
else {
GST_ERROR_OBJECT(sink, "Invalid allocation: %s", pref);
return FALSE;
}
value = gst_structure_get_value(structure, "subbands");
subbands = g_value_get_int(value);
if (subbands == 8)
cfg->subbands = BT_A2DP_SUBBANDS_8;
else if (subbands == 4)
cfg->subbands = BT_A2DP_SUBBANDS_4;
else {
GST_ERROR_OBJECT(sink, "Invalid subbands %d", subbands);
return FALSE;
}
value = gst_structure_get_value(structure, "blocks");
blocks = g_value_get_int(value);
if (blocks == 16)
cfg->block_length = BT_A2DP_BLOCK_LENGTH_16;
else if (blocks == 12)
cfg->block_length = BT_A2DP_BLOCK_LENGTH_12;
else if (blocks == 8)
cfg->block_length = BT_A2DP_BLOCK_LENGTH_8;
else if (blocks == 4)
cfg->block_length = BT_A2DP_BLOCK_LENGTH_4;
else {
GST_ERROR_OBJECT(sink, "Invalid blocks %d", blocks);
return FALSE;
}
value = gst_structure_get_value(structure, "bitpool");
cfg->max_bitpool = cfg->min_bitpool = g_value_get_int(value);
memcpy(pkt, cfg, sizeof(*pkt));
return TRUE;
}
static gboolean gst_avdtp_sink_conf_recv_stream_fd(
GstAvdtpSink *self)
{
struct bluetooth_data *data = self->data;
gint ret;
GError *gerr = NULL;
GIOStatus status;
GIOFlags flags;
int fd;
/* Proceed if stream was already acquired */
if (self->stream != NULL)
goto proceed;
ret = gst_avdtp_sink_bluetooth_recvmsg_fd(self);
if (ret < 0)
return FALSE;
if (!self->stream) {
GST_ERROR_OBJECT(self, "Error while configuring device: "
"could not acquire audio socket");
return FALSE;
}
proceed:
/* set stream socket to nonblock */
GST_LOG_OBJECT(self, "setting stream socket to nonblock");
flags = g_io_channel_get_flags(self->stream);
flags |= G_IO_FLAG_NONBLOCK;
status = g_io_channel_set_flags(self->stream, flags, &gerr);
if (status != G_IO_STATUS_NORMAL) {
if (gerr)
GST_WARNING_OBJECT(self, "Error while "
"setting server socket to nonblock: "
"%s", gerr->message);
else
GST_WARNING_OBJECT(self, "Error while "
"setting server "
"socket to nonblock");
}
fd = g_io_channel_unix_get_fd(self->stream);
/* It is possible there is some outstanding
data in the pipe - we have to empty it */
GST_LOG_OBJECT(self, "emptying stream pipe");
while (1) {
ssize_t bread = read(fd, data->buffer, data->link_mtu);
if (bread <= 0)
break;
}
/* set stream socket to block */
GST_LOG_OBJECT(self, "setting stream socket to block");
flags = g_io_channel_get_flags(self->stream);
flags &= ~G_IO_FLAG_NONBLOCK;
status = g_io_channel_set_flags(self->stream, flags, &gerr);
if (status != G_IO_STATUS_NORMAL) {
if (gerr)
GST_WARNING_OBJECT(self, "Error while "
"setting server socket to block:"
"%s", gerr->message);
else
GST_WARNING_OBJECT(self, "Error while "
"setting server "
"socket to block");
}
memset(data->buffer, 0, sizeof(data->buffer));
return TRUE;
}
static gboolean server_callback(GIOChannel *chan,
GIOCondition cond, gpointer data)
{
if (cond & G_IO_HUP || cond & G_IO_NVAL)
return FALSE;
else if (cond & G_IO_ERR)
GST_WARNING_OBJECT(GST_AVDTP_SINK(data),
"Untreated callback G_IO_ERR");
return TRUE;
}
static GstStructure *gst_avdtp_sink_parse_sbc_caps(
GstAvdtpSink *self, sbc_capabilities_t *sbc)
{
GstStructure *structure;
GValue *value;
GValue *list;
gboolean mono, stereo;
if (sbc == NULL)
return NULL;
structure = gst_structure_empty_new("audio/x-sbc");
value = g_value_init(g_new0(GValue, 1), G_TYPE_STRING);
/* mode */
list = g_value_init(g_new0(GValue, 1), GST_TYPE_LIST);
if (sbc->channel_mode & BT_A2DP_CHANNEL_MODE_MONO) {
g_value_set_static_string(value, "mono");
gst_value_list_prepend_value(list, value);
}
if (sbc->channel_mode & BT_A2DP_CHANNEL_MODE_STEREO) {
g_value_set_static_string(value, "stereo");
gst_value_list_prepend_value(list, value);
}
if (sbc->channel_mode & BT_A2DP_CHANNEL_MODE_DUAL_CHANNEL) {
g_value_set_static_string(value, "dual");
gst_value_list_prepend_value(list, value);
}
if (sbc->channel_mode & BT_A2DP_CHANNEL_MODE_JOINT_STEREO) {
g_value_set_static_string(value, "joint");
gst_value_list_prepend_value(list, value);
}
g_value_unset(value);
if (list) {
gst_structure_set_value(structure, "mode", list);
g_free(list);
list = NULL;
}
/* subbands */
list = g_value_init(g_new0(GValue, 1), GST_TYPE_LIST);
value = g_value_init(value, G_TYPE_INT);
if (sbc->subbands & BT_A2DP_SUBBANDS_4) {
g_value_set_int(value, 4);
gst_value_list_prepend_value(list, value);
}
if (sbc->subbands & BT_A2DP_SUBBANDS_8) {
g_value_set_int(value, 8);
gst_value_list_prepend_value(list, value);
}
g_value_unset(value);
if (list) {
gst_structure_set_value(structure, "subbands", list);
g_free(list);
list = NULL;
}
/* blocks */
value = g_value_init(value, G_TYPE_INT);
list = g_value_init(g_new0(GValue, 1), GST_TYPE_LIST);
if (sbc->block_length & BT_A2DP_BLOCK_LENGTH_16) {
g_value_set_int(value, 16);
gst_value_list_prepend_value(list, value);
}
if (sbc->block_length & BT_A2DP_BLOCK_LENGTH_12) {
g_value_set_int(value, 12);
gst_value_list_prepend_value(list, value);
}
if (sbc->block_length & BT_A2DP_BLOCK_LENGTH_8) {
g_value_set_int(value, 8);
gst_value_list_prepend_value(list, value);
}
if (sbc->block_length & BT_A2DP_BLOCK_LENGTH_4) {
g_value_set_int(value, 4);
gst_value_list_prepend_value(list, value);
}
g_value_unset(value);
if (list) {
gst_structure_set_value(structure, "blocks", list);
g_free(list);
list = NULL;
}
/* allocation */
g_value_init(value, G_TYPE_STRING);
list = g_value_init(g_new0(GValue,1), GST_TYPE_LIST);
if (sbc->allocation_method & BT_A2DP_ALLOCATION_LOUDNESS) {
g_value_set_static_string(value, "loudness");
gst_value_list_prepend_value(list, value);
}
if (sbc->allocation_method & BT_A2DP_ALLOCATION_SNR) {
g_value_set_static_string(value, "snr");
gst_value_list_prepend_value(list, value);
}
g_value_unset(value);
if (list) {
gst_structure_set_value(structure, "allocation", list);
g_free(list);
list = NULL;
}
/* rate */
g_value_init(value, G_TYPE_INT);
list = g_value_init(g_new0(GValue, 1), GST_TYPE_LIST);
if (sbc->frequency & BT_SBC_SAMPLING_FREQ_48000) {
g_value_set_int(value, 48000);
gst_value_list_prepend_value(list, value);
}
if (sbc->frequency & BT_SBC_SAMPLING_FREQ_44100) {
g_value_set_int(value, 44100);
gst_value_list_prepend_value(list, value);
}
if (sbc->frequency & BT_SBC_SAMPLING_FREQ_32000) {
g_value_set_int(value, 32000);
gst_value_list_prepend_value(list, value);
}
if (sbc->frequency & BT_SBC_SAMPLING_FREQ_16000) {
g_value_set_int(value, 16000);
gst_value_list_prepend_value(list, value);
}
g_value_unset(value);
if (list) {
gst_structure_set_value(structure, "rate", list);
g_free(list);
list = NULL;
}
/* bitpool */
value = g_value_init(value, GST_TYPE_INT_RANGE);
gst_value_set_int_range(value,
MIN(sbc->min_bitpool, TEMPLATE_MAX_BITPOOL),
MIN(sbc->max_bitpool, TEMPLATE_MAX_BITPOOL));
gst_structure_set_value(structure, "bitpool", value);
g_value_unset(value);
/* channels */
mono = FALSE;
stereo = FALSE;
if (sbc->channel_mode & BT_A2DP_CHANNEL_MODE_MONO)
mono = TRUE;
if ((sbc->channel_mode & BT_A2DP_CHANNEL_MODE_STEREO) ||
(sbc->channel_mode &
BT_A2DP_CHANNEL_MODE_DUAL_CHANNEL) ||
(sbc->channel_mode &
BT_A2DP_CHANNEL_MODE_JOINT_STEREO))
stereo = TRUE;
if (mono && stereo) {
g_value_init(value, GST_TYPE_INT_RANGE);
gst_value_set_int_range(value, 1, 2);
} else {
g_value_init(value, G_TYPE_INT);
if (mono)
g_value_set_int(value, 1);
else if (stereo)
g_value_set_int(value, 2);
else {
GST_ERROR_OBJECT(self,
"Unexpected number of channels");
g_value_set_int(value, 0);
}
}
gst_structure_set_value(structure, "channels", value);
g_free(value);
return structure;
}
static GstStructure *gst_avdtp_sink_parse_mpeg_caps(
GstAvdtpSink *self, mpeg_capabilities_t *mpeg)
{
GstStructure *structure;
GValue *value;
GValue *list;
gboolean valid_layer = FALSE;
gboolean mono, stereo;
if (!mpeg)
return NULL;
GST_LOG_OBJECT(self, "parsing mpeg caps");
structure = gst_structure_empty_new("audio/mpeg");
value = g_new0(GValue, 1);
g_value_init(value, G_TYPE_INT);
list = g_value_init(g_new0(GValue, 1), GST_TYPE_LIST);
g_value_set_int(value, 1);
gst_value_list_prepend_value(list, value);
g_value_set_int(value, 2);
gst_value_list_prepend_value(list, value);
gst_structure_set_value(structure, "mpegversion", list);
g_free(list);
/* layer */
GST_LOG_OBJECT(self, "setting mpeg layer");
list = g_value_init(g_new0(GValue, 1), GST_TYPE_LIST);
if (mpeg->layer & BT_MPEG_LAYER_1) {
g_value_set_int(value, 1);
gst_value_list_prepend_value(list, value);
valid_layer = TRUE;
}
if (mpeg->layer & BT_MPEG_LAYER_2) {
g_value_set_int(value, 2);
gst_value_list_prepend_value(list, value);
valid_layer = TRUE;
}
if (mpeg->layer & BT_MPEG_LAYER_3) {
g_value_set_int(value, 3);
gst_value_list_prepend_value(list, value);
valid_layer = TRUE;
}
if (list) {
gst_structure_set_value(structure, "layer", list);
g_free(list);
list = NULL;
}
if (!valid_layer) {
gst_structure_free(structure);
g_free(value);
return NULL;
}
/* rate */
GST_LOG_OBJECT(self, "setting mpeg rate");
list = g_value_init(g_new0(GValue, 1), GST_TYPE_LIST);
if (mpeg->frequency & BT_MPEG_SAMPLING_FREQ_48000) {
g_value_set_int(value, 48000);
gst_value_list_prepend_value(list, value);
}
if (mpeg->frequency & BT_MPEG_SAMPLING_FREQ_44100) {
g_value_set_int(value, 44100);
gst_value_list_prepend_value(list, value);
}
if (mpeg->frequency & BT_MPEG_SAMPLING_FREQ_32000) {
g_value_set_int(value, 32000);
gst_value_list_prepend_value(list, value);
}
if (mpeg->frequency & BT_MPEG_SAMPLING_FREQ_24000) {
g_value_set_int(value, 24000);
gst_value_list_prepend_value(list, value);
}
if (mpeg->frequency & BT_MPEG_SAMPLING_FREQ_22050) {
g_value_set_int(value, 22050);
gst_value_list_prepend_value(list, value);
}
if (mpeg->frequency & BT_MPEG_SAMPLING_FREQ_16000) {
g_value_set_int(value, 16000);
gst_value_list_prepend_value(list, value);
}
g_value_unset(value);
if (list) {
gst_structure_set_value(structure, "rate", list);
g_free(list);
list = NULL;
}
/* channels */
GST_LOG_OBJECT(self, "setting mpeg channels");
mono = FALSE;
stereo = FALSE;
if (mpeg->channel_mode & BT_A2DP_CHANNEL_MODE_MONO)
mono = TRUE;
if ((mpeg->channel_mode & BT_A2DP_CHANNEL_MODE_STEREO) ||
(mpeg->channel_mode &
BT_A2DP_CHANNEL_MODE_DUAL_CHANNEL) ||
(mpeg->channel_mode &
BT_A2DP_CHANNEL_MODE_JOINT_STEREO))
stereo = TRUE;
if (mono && stereo) {
g_value_init(value, GST_TYPE_INT_RANGE);
gst_value_set_int_range(value, 1, 2);
} else {
g_value_init(value, G_TYPE_INT);
if (mono)
g_value_set_int(value, 1);
else if (stereo)
g_value_set_int(value, 2);
else {
GST_ERROR_OBJECT(self,
"Unexpected number of channels");
g_value_set_int(value, 0);
}
}
gst_structure_set_value(structure, "channels", value);
g_free(value);
return structure;
}
static GstStructure *gst_avdtp_sink_parse_sbc_raw(GstAvdtpSink *self)
{
a2dp_sbc_t *sbc = (a2dp_sbc_t *) self->data->config;
GstStructure *structure;
GValue *value;
GValue *list;
gboolean mono, stereo;
structure = gst_structure_empty_new("audio/x-sbc");
value = g_value_init(g_new0(GValue, 1), G_TYPE_STRING);
/* mode */
list = g_value_init(g_new0(GValue, 1), GST_TYPE_LIST);
if (sbc->channel_mode & BT_A2DP_CHANNEL_MODE_MONO) {
g_value_set_static_string(value, "mono");
gst_value_list_prepend_value(list, value);
}
if (sbc->channel_mode & BT_A2DP_CHANNEL_MODE_STEREO) {
g_value_set_static_string(value, "stereo");
gst_value_list_prepend_value(list, value);
}
if (sbc->channel_mode & BT_A2DP_CHANNEL_MODE_DUAL_CHANNEL) {
g_value_set_static_string(value, "dual");
gst_value_list_prepend_value(list, value);
}
if (sbc->channel_mode & BT_A2DP_CHANNEL_MODE_JOINT_STEREO) {
g_value_set_static_string(value, "joint");
gst_value_list_prepend_value(list, value);
}
g_value_unset(value);
if (list) {
gst_structure_set_value(structure, "mode", list);
g_free(list);
list = NULL;
}
/* subbands */
list = g_value_init(g_new0(GValue, 1), GST_TYPE_LIST);
value = g_value_init(value, G_TYPE_INT);
if (sbc->subbands & BT_A2DP_SUBBANDS_4) {
g_value_set_int(value, 4);
gst_value_list_prepend_value(list, value);
}
if (sbc->subbands & BT_A2DP_SUBBANDS_8) {
g_value_set_int(value, 8);
gst_value_list_prepend_value(list, value);
}
g_value_unset(value);
if (list) {
gst_structure_set_value(structure, "subbands", list);
g_free(list);
list = NULL;
}
/* blocks */
value = g_value_init(value, G_TYPE_INT);
list = g_value_init(g_new0(GValue, 1), GST_TYPE_LIST);
if (sbc->block_length & BT_A2DP_BLOCK_LENGTH_16) {
g_value_set_int(value, 16);
gst_value_list_prepend_value(list, value);
}
if (sbc->block_length & BT_A2DP_BLOCK_LENGTH_12) {
g_value_set_int(value, 12);
gst_value_list_prepend_value(list, value);
}
if (sbc->block_length & BT_A2DP_BLOCK_LENGTH_8) {
g_value_set_int(value, 8);
gst_value_list_prepend_value(list, value);
}
if (sbc->block_length & BT_A2DP_BLOCK_LENGTH_4) {
g_value_set_int(value, 4);
gst_value_list_prepend_value(list, value);
}
g_value_unset(value);
if (list) {
gst_structure_set_value(structure, "blocks", list);
g_free(list);
list = NULL;
}
/* allocation */
g_value_init(value, G_TYPE_STRING);
list = g_value_init(g_new0(GValue,1), GST_TYPE_LIST);
if (sbc->allocation_method & BT_A2DP_ALLOCATION_LOUDNESS) {
g_value_set_static_string(value, "loudness");
gst_value_list_prepend_value(list, value);
}
if (sbc->allocation_method & BT_A2DP_ALLOCATION_SNR) {
g_value_set_static_string(value, "snr");
gst_value_list_prepend_value(list, value);
}
g_value_unset(value);
if (list) {
gst_structure_set_value(structure, "allocation", list);
g_free(list);
list = NULL;
}
/* rate */
g_value_init(value, G_TYPE_INT);
list = g_value_init(g_new0(GValue, 1), GST_TYPE_LIST);
if (sbc->frequency & BT_SBC_SAMPLING_FREQ_48000) {
g_value_set_int(value, 48000);
gst_value_list_prepend_value(list, value);
}
if (sbc->frequency & BT_SBC_SAMPLING_FREQ_44100) {
g_value_set_int(value, 44100);
gst_value_list_prepend_value(list, value);
}
if (sbc->frequency & BT_SBC_SAMPLING_FREQ_32000) {
g_value_set_int(value, 32000);
gst_value_list_prepend_value(list, value);
}
if (sbc->frequency & BT_SBC_SAMPLING_FREQ_16000) {
g_value_set_int(value, 16000);
gst_value_list_prepend_value(list, value);
}
g_value_unset(value);
if (list) {
gst_structure_set_value(structure, "rate", list);
g_free(list);
list = NULL;
}
/* bitpool */
value = g_value_init(value, GST_TYPE_INT_RANGE);
gst_value_set_int_range(value,
MIN(sbc->min_bitpool, TEMPLATE_MAX_BITPOOL),
MIN(sbc->max_bitpool, TEMPLATE_MAX_BITPOOL));
gst_structure_set_value(structure, "bitpool", value);
g_value_unset(value);
/* channels */
mono = FALSE;
stereo = FALSE;
if (sbc->channel_mode & BT_A2DP_CHANNEL_MODE_MONO)
mono = TRUE;
if ((sbc->channel_mode & BT_A2DP_CHANNEL_MODE_STEREO) ||
(sbc->channel_mode &
BT_A2DP_CHANNEL_MODE_DUAL_CHANNEL) ||
(sbc->channel_mode &
BT_A2DP_CHANNEL_MODE_JOINT_STEREO))
stereo = TRUE;
if (mono && stereo) {
g_value_init(value, GST_TYPE_INT_RANGE);
gst_value_set_int_range(value, 1, 2);
} else {
g_value_init(value, G_TYPE_INT);
if (mono)
g_value_set_int(value, 1);
else if (stereo)
g_value_set_int(value, 2);
else {
GST_ERROR_OBJECT(self,
"Unexpected number of channels");
g_value_set_int(value, 0);
}
}
gst_structure_set_value(structure, "channels", value);
g_free(value);
return structure;
}
static GstStructure *gst_avdtp_sink_parse_mpeg_raw(GstAvdtpSink *self)
{
a2dp_mpeg_t *mpeg = (a2dp_mpeg_t *) self->data->config;
GstStructure *structure;
GValue *value;
GValue *list;
gboolean valid_layer = FALSE;
gboolean mono, stereo;
GST_LOG_OBJECT(self, "parsing mpeg caps");
structure = gst_structure_empty_new("audio/mpeg");
value = g_new0(GValue, 1);
g_value_init(value, G_TYPE_INT);
list = g_value_init(g_new0(GValue, 1), GST_TYPE_LIST);
g_value_set_int(value, 1);
gst_value_list_prepend_value(list, value);
g_value_set_int(value, 2);
gst_value_list_prepend_value(list, value);
gst_structure_set_value(structure, "mpegversion", list);
g_free(list);
/* layer */
GST_LOG_OBJECT(self, "setting mpeg layer");
list = g_value_init(g_new0(GValue, 1), GST_TYPE_LIST);
if (mpeg->layer & BT_MPEG_LAYER_1) {
g_value_set_int(value, 1);
gst_value_list_prepend_value(list, value);
valid_layer = TRUE;
}
if (mpeg->layer & BT_MPEG_LAYER_2) {
g_value_set_int(value, 2);
gst_value_list_prepend_value(list, value);
valid_layer = TRUE;
}
if (mpeg->layer & BT_MPEG_LAYER_3) {
g_value_set_int(value, 3);
gst_value_list_prepend_value(list, value);
valid_layer = TRUE;
}
if (list) {
gst_structure_set_value(structure, "layer", list);
g_free(list);
list = NULL;
}
if (!valid_layer) {
gst_structure_free(structure);
g_free(value);
return NULL;
}
/* rate */
GST_LOG_OBJECT(self, "setting mpeg rate");
list = g_value_init(g_new0(GValue, 1), GST_TYPE_LIST);
if (mpeg->frequency & BT_MPEG_SAMPLING_FREQ_48000) {
g_value_set_int(value, 48000);
gst_value_list_prepend_value(list, value);
}
if (mpeg->frequency & BT_MPEG_SAMPLING_FREQ_44100) {
g_value_set_int(value, 44100);
gst_value_list_prepend_value(list, value);
}
if (mpeg->frequency & BT_MPEG_SAMPLING_FREQ_32000) {
g_value_set_int(value, 32000);
gst_value_list_prepend_value(list, value);
}
if (mpeg->frequency & BT_MPEG_SAMPLING_FREQ_24000) {
g_value_set_int(value, 24000);
gst_value_list_prepend_value(list, value);
}
if (mpeg->frequency & BT_MPEG_SAMPLING_FREQ_22050) {
g_value_set_int(value, 22050);
gst_value_list_prepend_value(list, value);
}
if (mpeg->frequency & BT_MPEG_SAMPLING_FREQ_16000) {
g_value_set_int(value, 16000);
gst_value_list_prepend_value(list, value);
}
g_value_unset(value);
if (list) {
gst_structure_set_value(structure, "rate", list);
g_free(list);
list = NULL;
}
/* channels */
GST_LOG_OBJECT(self, "setting mpeg channels");
mono = FALSE;
stereo = FALSE;
if (mpeg->channel_mode & BT_A2DP_CHANNEL_MODE_MONO)
mono = TRUE;
if ((mpeg->channel_mode & BT_A2DP_CHANNEL_MODE_STEREO) ||
(mpeg->channel_mode &
BT_A2DP_CHANNEL_MODE_DUAL_CHANNEL) ||
(mpeg->channel_mode &
BT_A2DP_CHANNEL_MODE_JOINT_STEREO))
stereo = TRUE;
if (mono && stereo) {
g_value_init(value, GST_TYPE_INT_RANGE);
gst_value_set_int_range(value, 1, 2);
} else {
g_value_init(value, G_TYPE_INT);
if (mono)
g_value_set_int(value, 1);
else if (stereo)
g_value_set_int(value, 2);
else {
GST_ERROR_OBJECT(self,
"Unexpected number of channels");
g_value_set_int(value, 0);
}
}
gst_structure_set_value(structure, "channels", value);
g_free(value);
return structure;
}
static gboolean gst_avdtp_sink_update_config(GstAvdtpSink *self)
{
GstStructure *structure;
gchar *tmp;
switch (self->data->codec) {
case A2DP_CODEC_SBC:
structure = gst_avdtp_sink_parse_sbc_raw(self);
break;
case A2DP_CODEC_MPEG12:
structure = gst_avdtp_sink_parse_mpeg_raw(self);
break;
default:
GST_ERROR_OBJECT(self, "Unsupported configuration");
return FALSE;
}
if (structure == NULL)
return FALSE;
if (self->dev_caps != NULL)
gst_caps_unref(self->dev_caps);
self->dev_caps = gst_caps_new_full(structure, NULL);
tmp = gst_caps_to_string(self->dev_caps);
GST_DEBUG_OBJECT(self, "Transport configuration: %s", tmp);
g_free(tmp);
return TRUE;
}
static gboolean gst_avdtp_sink_update_caps(GstAvdtpSink *self)
{
sbc_capabilities_t *sbc;
mpeg_capabilities_t *mpeg;
GstStructure *sbc_structure;
GstStructure *mpeg_structure;
gchar *tmp;
GST_LOG_OBJECT(self, "updating device caps");
if (self->data->config_size != 0 && self->data->config != NULL)
return gst_avdtp_sink_update_config(self);
sbc = (void *) gst_avdtp_find_caps(self, BT_A2DP_SBC_SINK);
mpeg = (void *) gst_avdtp_find_caps(self, BT_A2DP_MPEG12_SINK);
if (!sbc) {
GST_ERROR_OBJECT(self, "Failed to find mandatory SBC sink");
return FALSE;
}
sbc_structure = gst_avdtp_sink_parse_sbc_caps(self, sbc);
mpeg_structure = gst_avdtp_sink_parse_mpeg_caps(self, mpeg);
if (self->dev_caps != NULL)
gst_caps_unref(self->dev_caps);
self->dev_caps = gst_caps_new_full(sbc_structure, NULL);
if (mpeg_structure != NULL)
gst_caps_append_structure(self->dev_caps, mpeg_structure);
tmp = gst_caps_to_string(self->dev_caps);
GST_DEBUG_OBJECT(self, "Device capabilities: %s", tmp);
g_free(tmp);
return TRUE;
}
static gboolean gst_avdtp_sink_get_capabilities(GstAvdtpSink *self)
{
gchar *buf[BT_SUGGESTED_BUFFER_SIZE];
struct bt_get_capabilities_req *req = (void *) buf;
struct bt_get_capabilities_rsp *rsp = (void *) buf;
int err;
memset(req, 0, BT_SUGGESTED_BUFFER_SIZE);
req->h.type = BT_REQUEST;
req->h.name = BT_GET_CAPABILITIES;
req->h.length = sizeof(*req);
if (self->device == NULL)
return FALSE;
strncpy(req->destination, self->device, 18);
if (self->autoconnect)
req->flags |= BT_FLAG_AUTOCONNECT;
err = gst_avdtp_sink_audioservice_send(self, &req->h);
if (err < 0) {
GST_ERROR_OBJECT(self, "Error while asking device caps");
return FALSE;
}
rsp->h.length = 0;
err = gst_avdtp_sink_audioservice_expect(self,
&rsp->h, BT_GET_CAPABILITIES);
if (err < 0) {
GST_ERROR_OBJECT(self, "Error while getting device caps");
return FALSE;
}
self->data->caps = g_malloc0(rsp->h.length);
memcpy(self->data->caps, rsp, rsp->h.length);
if (!gst_avdtp_sink_update_caps(self)) {
GST_WARNING_OBJECT(self, "failed to update capabilities");
return FALSE;
}
return TRUE;
}
static gint gst_avdtp_sink_get_channel_mode(const gchar *mode)
{
if (strcmp(mode, "stereo") == 0)
return BT_A2DP_CHANNEL_MODE_STEREO;
else if (strcmp(mode, "joint-stereo") == 0)
return BT_A2DP_CHANNEL_MODE_JOINT_STEREO;
else if (strcmp(mode, "dual-channel") == 0)
return BT_A2DP_CHANNEL_MODE_DUAL_CHANNEL;
else if (strcmp(mode, "mono") == 0)
return BT_A2DP_CHANNEL_MODE_MONO;
else
return -1;
}
static void gst_avdtp_sink_tag(const GstTagList *taglist,
const gchar *tag, gpointer user_data)
{
gboolean crc;
gchar *channel_mode = NULL;
GstAvdtpSink *self = GST_AVDTP_SINK(user_data);
if (strcmp(tag, "has-crc") == 0) {
if (!gst_tag_list_get_boolean(taglist, tag, &crc)) {
GST_WARNING_OBJECT(self, "failed to get crc tag");
return;
}
gst_avdtp_sink_set_crc(self, crc);
} else if (strcmp(tag, "channel-mode") == 0) {
if (!gst_tag_list_get_string(taglist, tag, &channel_mode)) {
GST_WARNING_OBJECT(self,
"failed to get channel-mode tag");
return;
}
self->channel_mode = gst_avdtp_sink_get_channel_mode(
channel_mode);
if (self->channel_mode == -1)
GST_WARNING_OBJECT(self, "Received invalid channel "
"mode: %s", channel_mode);
g_free(channel_mode);
} else
GST_DEBUG_OBJECT(self, "received unused tag: %s", tag);
}
static gboolean gst_avdtp_sink_event(GstBaseSink *basesink,
GstEvent *event)
{
GstAvdtpSink *self = GST_AVDTP_SINK(basesink);
GstTagList *taglist = NULL;
if (GST_EVENT_TYPE(event) == GST_EVENT_TAG) {
/* we check the tags, mp3 has tags that are importants and
* are outside caps */
gst_event_parse_tag(event, &taglist);
gst_tag_list_foreach(taglist, gst_avdtp_sink_tag, self);
}
return TRUE;
}
static gboolean gst_avdtp_sink_transport_parse_property(GstAvdtpSink *self,
DBusMessageIter *i)
{
const char *key;
DBusMessageIter variant_i;
if (dbus_message_iter_get_arg_type(i) != DBUS_TYPE_STRING) {
GST_ERROR_OBJECT(self, "Property name not a string.");
return FALSE;
}
dbus_message_iter_get_basic(i, &key);
if (!dbus_message_iter_next(i)) {
GST_ERROR_OBJECT(self, "Property value missing");
return FALSE;
}
if (dbus_message_iter_get_arg_type(i) != DBUS_TYPE_VARIANT) {
GST_ERROR_OBJECT(self, "Property value not a variant.");
return FALSE;
}
dbus_message_iter_recurse(i, &variant_i);
switch (dbus_message_iter_get_arg_type(&variant_i)) {
case DBUS_TYPE_BYTE: {
uint8_t value;
dbus_message_iter_get_basic(&variant_i, &value);
if (g_str_equal(key, "Codec") == TRUE)
self->data->codec = value;
break;
}
case DBUS_TYPE_STRING: {
const char *value;
dbus_message_iter_get_basic(&variant_i, &value);
if (g_str_equal(key, "UUID") == TRUE) {
g_free(self->data->uuid);
self->data->uuid = g_strdup(value);
}
break;
}
case DBUS_TYPE_ARRAY: {
DBusMessageIter array_i;
char *value;
int size;
dbus_message_iter_recurse(&variant_i, &array_i);
dbus_message_iter_get_fixed_array(&array_i, &value, &size);
if (g_str_equal(key, "Configuration")) {
g_free(self->data->config);
self->data->config = g_new0(guint8, size);
self->data->config_size = size;
memcpy(self->data->config, value, size);
}
break;
}
}
return TRUE;
}
static gboolean gst_avdtp_sink_transport_acquire(GstAvdtpSink *self)
{
DBusMessage *msg, *reply;
DBusError err;
const char *access_type = "w";
int fd;
uint16_t imtu, omtu;
dbus_error_init(&err);
if (self->data->conn == NULL)
self->data->conn = dbus_bus_get(DBUS_BUS_SYSTEM, &err);
msg = dbus_message_new_method_call("org.bluez", self->transport,
"org.bluez.MediaTransport",
"Acquire");
dbus_message_append_args(msg, DBUS_TYPE_STRING, &access_type,
DBUS_TYPE_INVALID);
reply = dbus_connection_send_with_reply_and_block(self->data->conn,
msg, -1, &err);
dbus_message_unref(msg);
if (dbus_error_is_set(&err))
goto fail;
if (dbus_message_get_args(reply, &err, DBUS_TYPE_UNIX_FD, &fd,
DBUS_TYPE_UINT16, &imtu,
DBUS_TYPE_UINT16, &omtu,
DBUS_TYPE_INVALID) == FALSE)
goto fail;
dbus_message_unref(reply);
self->stream = g_io_channel_unix_new(fd);
g_io_channel_set_encoding(self->stream, NULL, NULL);
g_io_channel_set_close_on_unref(self->stream, TRUE);
self->data->link_mtu = omtu;
GST_DEBUG_OBJECT(self, "stream_fd=%d mtu=%d", fd, omtu);
return TRUE;
fail:
GST_ERROR_OBJECT(self, "Failed to acquire transport stream: %s",
err.message);
dbus_error_free(&err);
if (reply)
dbus_message_unref(reply);
return FALSE;
}
static gboolean gst_avdtp_sink_transport_get_properties(GstAvdtpSink *self)
{
DBusMessage *msg, *reply;
DBusMessageIter arg_i, ele_i;
DBusError err;
dbus_error_init(&err);
/* Transport need to be acquire first to make sure the MTUs are
available */
if (gst_avdtp_sink_transport_acquire(self) == FALSE)
return FALSE;
msg = dbus_message_new_method_call("org.bluez", self->transport,
"org.bluez.MediaTransport",
"GetProperties");
reply = dbus_connection_send_with_reply_and_block(self->data->conn,
msg, -1, &err);
if (dbus_error_is_set(&err) || reply == NULL) {
GST_ERROR_OBJECT(self, "Failed to get transport properties: %s",
err.message);
goto fail;
}
if (!dbus_message_iter_init(reply, &arg_i)) {
GST_ERROR_OBJECT(self, "GetProperties reply has no arguments.");
goto fail;
}
if (dbus_message_iter_get_arg_type(&arg_i) != DBUS_TYPE_ARRAY) {
GST_ERROR_OBJECT(self, "GetProperties argument is not an array.");
goto fail;
}
dbus_message_iter_recurse(&arg_i, &ele_i);
while (dbus_message_iter_get_arg_type(&ele_i) != DBUS_TYPE_INVALID) {
if (dbus_message_iter_get_arg_type(&ele_i) ==
DBUS_TYPE_DICT_ENTRY) {
DBusMessageIter dict_i;
dbus_message_iter_recurse(&ele_i, &dict_i);
gst_avdtp_sink_transport_parse_property(self, &dict_i);
}
if (!dbus_message_iter_next(&ele_i))
break;
}
return gst_avdtp_sink_update_caps(self);
fail:
dbus_message_unref(msg);
dbus_message_unref(reply);
return FALSE;
}
static gboolean gst_avdtp_sink_start(GstBaseSink *basesink)
{
GstAvdtpSink *self = GST_AVDTP_SINK(basesink);
gint sk;
gint err;
GST_INFO_OBJECT(self, "start");
self->data = g_new0(struct bluetooth_data, 1);
self->stream = NULL;
self->stream_caps = NULL;
self->mp3_using_crc = -1;
self->channel_mode = -1;
if (self->transport != NULL)
return gst_avdtp_sink_transport_get_properties(self);
self->watch_id = 0;
sk = bt_audio_service_open();
if (sk < 0) {
err = -errno;
GST_ERROR_OBJECT(self, "Cannot open connection to bt "
"audio service: %s %d", strerror(-err), -err);
return FALSE;
}
self->server = g_io_channel_unix_new(sk);
g_io_channel_set_encoding(self->server, NULL, NULL);
self->watch_id = g_io_add_watch(self->server, G_IO_HUP | G_IO_ERR |
G_IO_NVAL, server_callback, self);
if (!gst_avdtp_sink_get_capabilities(self)) {
GST_ERROR_OBJECT(self, "failed to get capabilities "
"from device");
goto failed;
}
return TRUE;
failed:
bt_audio_service_close(sk);
return FALSE;
}
static gboolean gst_avdtp_sink_stream_start(GstAvdtpSink *self)
{
gchar buf[BT_SUGGESTED_BUFFER_SIZE];
struct bt_start_stream_req *req = (void *) buf;
struct bt_start_stream_rsp *rsp = (void *) buf;
struct bt_new_stream_ind *ind = (void *) buf;
int err;
if (self->transport != NULL)
return gst_avdtp_sink_conf_recv_stream_fd(self);
memset(req, 0, sizeof(buf));
req->h.type = BT_REQUEST;
req->h.name = BT_START_STREAM;
req->h.length = sizeof(*req);
err = gst_avdtp_sink_audioservice_send(self, &req->h);
if (err < 0) {
GST_ERROR_OBJECT(self, "Error occurred while sending "
"start packet");
return FALSE;
}
rsp->h.length = sizeof(*rsp);
err = gst_avdtp_sink_audioservice_expect(self, &rsp->h,
BT_START_STREAM);
if (err < 0) {
GST_ERROR_OBJECT(self, "Error while stream "
"start confirmation");
return FALSE;
}
ind->h.length = sizeof(*ind);
err = gst_avdtp_sink_audioservice_expect(self, &ind->h,
BT_NEW_STREAM);
if (err < 0) {
GST_ERROR_OBJECT(self, "Error while receiving "
"stream filedescriptor");
return FALSE;
}
if (!gst_avdtp_sink_conf_recv_stream_fd(self))
return FALSE;
return TRUE;
}
static gboolean gst_avdtp_sink_init_mp3_pkt_conf(
GstAvdtpSink *self, GstCaps *caps,
mpeg_capabilities_t *pkt)
{
const GValue *value = NULL;
gint rate, layer;
const gchar *name;
GstStructure *structure = gst_caps_get_structure(caps, 0);
name = gst_structure_get_name(structure);
if (!(IS_MPEG_AUDIO(name))) {
GST_ERROR_OBJECT(self, "Unexpected format %s, "
"was expecting mp3", name);
return FALSE;
}
/* layer */
value = gst_structure_get_value(structure, "layer");
layer = g_value_get_int(value);
if (layer == 1)
pkt->layer = BT_MPEG_LAYER_1;
else if (layer == 2)
pkt->layer = BT_MPEG_LAYER_2;
else if (layer == 3)
pkt->layer = BT_MPEG_LAYER_3;
else {
GST_ERROR_OBJECT(self, "Unexpected layer: %d", layer);
return FALSE;
}
/* crc */
if (self->mp3_using_crc != -1)
pkt->crc = self->mp3_using_crc;
else {
GST_ERROR_OBJECT(self, "No info about crc was received, "
" can't proceed");
return FALSE;
}
/* channel mode */
if (self->channel_mode != -1)
pkt->channel_mode = self->channel_mode;
else {
GST_ERROR_OBJECT(self, "No info about channel mode "
"received, can't proceed");
return FALSE;
}
/* mpf - we will only use the mandatory one */
pkt->mpf = 0;
value = gst_structure_get_value(structure, "rate");
rate = g_value_get_int(value);
if (rate == 44100)
pkt->frequency = BT_MPEG_SAMPLING_FREQ_44100;
else if (rate == 48000)
pkt->frequency = BT_MPEG_SAMPLING_FREQ_48000;
else if (rate == 32000)
pkt->frequency = BT_MPEG_SAMPLING_FREQ_32000;
else if (rate == 24000)
pkt->frequency = BT_MPEG_SAMPLING_FREQ_24000;
else if (rate == 22050)
pkt->frequency = BT_MPEG_SAMPLING_FREQ_22050;
else if (rate == 16000)
pkt->frequency = BT_MPEG_SAMPLING_FREQ_16000;
else {
GST_ERROR_OBJECT(self, "Invalid rate while setting caps");
return FALSE;
}
/* vbr - we always say its vbr, we don't have how to know it */
pkt->bitrate = 0x8000;
return TRUE;
}
static gboolean gst_avdtp_sink_configure(GstAvdtpSink *self,
GstCaps *caps)
{
gchar buf[BT_SUGGESTED_BUFFER_SIZE];
struct bt_open_req *open_req = (void *) buf;
struct bt_open_rsp *open_rsp = (void *) buf;
struct bt_set_configuration_req *req = (void *) buf;
struct bt_set_configuration_rsp *rsp = (void *) buf;
gboolean ret;
gchar *temp;
GstStructure *structure;
codec_capabilities_t *codec = NULL;
int err;
temp = gst_caps_to_string(caps);
GST_DEBUG_OBJECT(self, "configuring device with caps: %s", temp);
g_free(temp);
/* Transport already configured */
if (self->transport != NULL)
return TRUE;
structure = gst_caps_get_structure(caps, 0);
if (gst_structure_has_name(structure, "audio/x-sbc"))
codec = (void *) gst_avdtp_find_caps(self, BT_A2DP_SBC_SINK);
else if (gst_structure_has_name(structure, "audio/mpeg"))
codec = (void *) gst_avdtp_find_caps(self, BT_A2DP_MPEG12_SINK);
if (codec == NULL) {
GST_ERROR_OBJECT(self, "Couldn't parse caps "
"to packet configuration");
return FALSE;
}
memset(req, 0, BT_SUGGESTED_BUFFER_SIZE);
open_req->h.type = BT_REQUEST;
open_req->h.name = BT_OPEN;
open_req->h.length = sizeof(*open_req);
strncpy(open_req->destination, self->device, 18);
open_req->seid = codec->seid;
open_req->lock = BT_WRITE_LOCK;
err = gst_avdtp_sink_audioservice_send(self, &open_req->h);
if (err < 0) {
GST_ERROR_OBJECT(self, "Error occurred while sending "
"open packet");
return FALSE;
}
open_rsp->h.length = sizeof(*open_rsp);
err = gst_avdtp_sink_audioservice_expect(self, &open_rsp->h,
BT_OPEN);
if (err < 0) {
GST_ERROR_OBJECT(self, "Error while receiving device "
"confirmation");
return FALSE;
}
memset(req, 0, sizeof(buf));
req->h.type = BT_REQUEST;
req->h.name = BT_SET_CONFIGURATION;
req->h.length = sizeof(*req);
memcpy(&req->codec, codec, sizeof(req->codec));
if (codec->type == BT_A2DP_SBC_SINK)
ret = gst_avdtp_sink_init_sbc_pkt_conf(self, caps,
(void *) &req->codec);
else
ret = gst_avdtp_sink_init_mp3_pkt_conf(self, caps,
(void *) &req->codec);
if (!ret) {
GST_ERROR_OBJECT(self, "Couldn't parse caps "
"to packet configuration");
return FALSE;
}
req->h.length += req->codec.length - sizeof(req->codec);
err = gst_avdtp_sink_audioservice_send(self, &req->h);
if (err < 0) {
GST_ERROR_OBJECT(self, "Error occurred while sending "
"configurarion packet");
return FALSE;
}
rsp->h.length = sizeof(*rsp);
err = gst_avdtp_sink_audioservice_expect(self, &rsp->h,
BT_SET_CONFIGURATION);
if (err < 0) {
GST_ERROR_OBJECT(self, "Error while receiving device "
"confirmation");
return FALSE;
}
self->data->link_mtu = rsp->link_mtu;
return TRUE;
}
static GstFlowReturn gst_avdtp_sink_preroll(GstBaseSink *basesink,
GstBuffer *buffer)
{
GstAvdtpSink *sink = GST_AVDTP_SINK(basesink);
gboolean ret;
GST_AVDTP_SINK_MUTEX_LOCK(sink);
ret = gst_avdtp_sink_stream_start(sink);
GST_AVDTP_SINK_MUTEX_UNLOCK(sink);
if (!ret)
return GST_FLOW_ERROR;
return GST_FLOW_OK;
}
static GstFlowReturn gst_avdtp_sink_render(GstBaseSink *basesink,
GstBuffer *buffer)
{
GstAvdtpSink *self = GST_AVDTP_SINK(basesink);
ssize_t ret;
int fd;
fd = g_io_channel_unix_get_fd(self->stream);
ret = write(fd, GST_BUFFER_DATA(buffer), GST_BUFFER_SIZE(buffer));
if (ret < 0) {
GST_ERROR_OBJECT(self, "Error while writting to socket: %s",
strerror(errno));
return GST_FLOW_ERROR;
}
return GST_FLOW_OK;
}
static gboolean gst_avdtp_sink_unlock(GstBaseSink *basesink)
{
GstAvdtpSink *self = GST_AVDTP_SINK(basesink);
if (self->stream != NULL)
g_io_channel_flush(self->stream, NULL);
return TRUE;
}
static GstFlowReturn gst_avdtp_sink_buffer_alloc(GstBaseSink *basesink,
guint64 offset, guint size, GstCaps *caps,
GstBuffer **buf)
{
GstAvdtpSink *self = GST_AVDTP_SINK(basesink);
*buf = gst_buffer_new_and_alloc(size);
if (!(*buf)) {
GST_ERROR_OBJECT(self, "buffer allocation failed");
return GST_FLOW_ERROR;
}
gst_buffer_set_caps(*buf, caps);
GST_BUFFER_OFFSET(*buf) = offset;
return GST_FLOW_OK;
}
static void gst_avdtp_sink_class_init(GstAvdtpSinkClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS(klass);
GstBaseSinkClass *basesink_class = GST_BASE_SINK_CLASS(klass);
parent_class = g_type_class_peek_parent(klass);
object_class->finalize = GST_DEBUG_FUNCPTR(
gst_avdtp_sink_finalize);
object_class->set_property = GST_DEBUG_FUNCPTR(
gst_avdtp_sink_set_property);
object_class->get_property = GST_DEBUG_FUNCPTR(
gst_avdtp_sink_get_property);
basesink_class->start = GST_DEBUG_FUNCPTR(gst_avdtp_sink_start);
basesink_class->stop = GST_DEBUG_FUNCPTR(gst_avdtp_sink_stop);
basesink_class->render = GST_DEBUG_FUNCPTR(
gst_avdtp_sink_render);
basesink_class->preroll = GST_DEBUG_FUNCPTR(
gst_avdtp_sink_preroll);
basesink_class->unlock = GST_DEBUG_FUNCPTR(
gst_avdtp_sink_unlock);
basesink_class->event = GST_DEBUG_FUNCPTR(
gst_avdtp_sink_event);
basesink_class->buffer_alloc =
GST_DEBUG_FUNCPTR(gst_avdtp_sink_buffer_alloc);
g_object_class_install_property(object_class, PROP_DEVICE,
g_param_spec_string("device", "Device",
"Bluetooth remote device address",
NULL, G_PARAM_READWRITE));
g_object_class_install_property(object_class, PROP_AUTOCONNECT,
g_param_spec_boolean("auto-connect",
"Auto-connect",
"Automatically attempt to connect "
"to device", DEFAULT_AUTOCONNECT,
G_PARAM_READWRITE));
g_object_class_install_property(object_class, PROP_TRANSPORT,
g_param_spec_string("transport",
"Transport",
"Use configured transport",
NULL, G_PARAM_READWRITE));
GST_DEBUG_CATEGORY_INIT(avdtp_sink_debug, "avdtpsink", 0,
"A2DP headset sink element");
}
static void gst_avdtp_sink_init(GstAvdtpSink *self,
GstAvdtpSinkClass *klass)
{
self->device = NULL;
self->transport = NULL;
self->data = NULL;
self->stream = NULL;
self->dev_caps = NULL;
self->autoconnect = DEFAULT_AUTOCONNECT;
self->sink_lock = g_mutex_new();
/* FIXME this is for not synchronizing with clock, should be tested
* with devices to see the behaviour
gst_base_sink_set_sync(GST_BASE_SINK(self), FALSE);
*/
}
static int gst_avdtp_sink_audioservice_send(GstAvdtpSink *self,
const bt_audio_msg_header_t *msg)
{
ssize_t written;
const char *type, *name;
uint16_t length;
int fd, err;
length = msg->length ? msg->length : BT_SUGGESTED_BUFFER_SIZE;
fd = g_io_channel_unix_get_fd(self->server);
written = write(fd, msg, length);
if (written < 0) {
err = -errno;
GST_ERROR_OBJECT(self, "Error sending data to audio service:"
" %s", strerror(-err));
return err;
}
type = bt_audio_strtype(msg->type);
name = bt_audio_strname(msg->name);
GST_DEBUG_OBJECT(self, "sent: %s -> %s", type, name);
return 0;
}
static int gst_avdtp_sink_audioservice_recv(GstAvdtpSink *self,
bt_audio_msg_header_t *inmsg)
{
ssize_t bytes_read;
const char *type, *name;
uint16_t length;
int fd, err = 0;
length = inmsg->length ? inmsg->length : BT_SUGGESTED_BUFFER_SIZE;
fd = g_io_channel_unix_get_fd(self->server);
bytes_read = read(fd, inmsg, length);
if (bytes_read < 0) {
err = -errno;
GST_ERROR_OBJECT(self, "Error receiving data from "
"audio service: %s", strerror(-err));
return err;
}
type = bt_audio_strtype(inmsg->type);
if (!type) {
err = -EINVAL;
GST_ERROR_OBJECT(self, "Bogus message type %d "
"received from audio service",
inmsg->type);
}
name = bt_audio_strname(inmsg->name);
if (!name) {
err = -EINVAL;
GST_ERROR_OBJECT(self, "Bogus message name %d "
"received from audio service",
inmsg->name);
}
if (inmsg->type == BT_ERROR) {
bt_audio_error_t *msg = (void *) inmsg;
err = -EINVAL;
GST_ERROR_OBJECT(self, "%s failed : "
"%s(%d)",
name,
strerror(msg->posix_errno),
msg->posix_errno);
}
GST_DEBUG_OBJECT(self, "received: %s <- %s", type, name);
return err;
}
static int gst_avdtp_sink_audioservice_expect(GstAvdtpSink *self,
bt_audio_msg_header_t *outmsg,
guint8 expected_name)
{
int err;
err = gst_avdtp_sink_audioservice_recv(self, outmsg);
if (err < 0)
return err;
if (outmsg->name != expected_name)
return -EINVAL;
return 0;
}
gboolean gst_avdtp_sink_plugin_init(GstPlugin *plugin)
{
return gst_element_register(plugin, "avdtpsink", GST_RANK_NONE,
GST_TYPE_AVDTP_SINK);
}
/* public functions */
GstCaps *gst_avdtp_sink_get_device_caps(GstAvdtpSink *sink)
{
if (sink->dev_caps == NULL)
return NULL;
return gst_caps_copy(sink->dev_caps);
}
gboolean gst_avdtp_sink_set_device_caps(GstAvdtpSink *self,
GstCaps *caps)
{
gboolean ret;
GST_DEBUG_OBJECT(self, "setting device caps");
GST_AVDTP_SINK_MUTEX_LOCK(self);
ret = gst_avdtp_sink_configure(self, caps);
if (self->stream_caps)
gst_caps_unref(self->stream_caps);
self->stream_caps = gst_caps_ref(caps);
GST_AVDTP_SINK_MUTEX_UNLOCK(self);
return ret;
}
guint gst_avdtp_sink_get_link_mtu(GstAvdtpSink *sink)
{
return sink->data->link_mtu;
}
void gst_avdtp_sink_set_device(GstAvdtpSink *self, const gchar *dev)
{
if (self->device != NULL)
g_free(self->device);
GST_LOG_OBJECT(self, "Setting device: %s", dev);
self->device = g_strdup(dev);
}
void gst_avdtp_sink_set_transport(GstAvdtpSink *self, const gchar *trans)
{
if (self->transport != NULL)
g_free(self->transport);
GST_LOG_OBJECT(self, "Setting transport: %s", trans);
self->transport = g_strdup(trans);
}
gchar *gst_avdtp_sink_get_device(GstAvdtpSink *self)
{
return g_strdup(self->device);
}
gchar *gst_avdtp_sink_get_transport(GstAvdtpSink *self)
{
return g_strdup(self->transport);
}
void gst_avdtp_sink_set_crc(GstAvdtpSink *self, gboolean crc)
{
gint new_crc;
new_crc = crc ? CRC_PROTECTED : CRC_UNPROTECTED;
/* test if we already received a different crc */
if (self->mp3_using_crc != -1 && new_crc != self->mp3_using_crc) {
GST_WARNING_OBJECT(self, "crc changed during stream");
return;
}
self->mp3_using_crc = new_crc;
}
void gst_avdtp_sink_set_channel_mode(GstAvdtpSink *self,
const gchar *mode)
{
gint new_mode;
new_mode = gst_avdtp_sink_get_channel_mode(mode);
if (self->channel_mode != -1 && new_mode != self->channel_mode) {
GST_WARNING_OBJECT(self, "channel mode changed during stream");
return;
}
self->channel_mode = new_mode;
if (self->channel_mode == -1)
GST_WARNING_OBJECT(self, "Received invalid channel "
"mode: %s", mode);
}
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