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bluez: Add an avdtpsrc element

Browse source 
Source element that connects to a given transport and reads audio over
AVDTP. Does not provide a clock but uses the system clock to timestamp
incoming packets. Only SBC is currently supported.
This commit is contained in:
Arun Raghavan 2012-10-10 19:49:32 +05:30
parent c645e41711
commit f644b924d4
7 changed files with 1258 additions and 673 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

49
sys/bluez/gsta2dpsink.h
View file

@ -28,7 +28,6 @@
#include "gstavdtpsink.h"
G_BEGIN_DECLS
#define GST_TYPE_A2DP_SINK \
(gst_a2dp_sink_get_type())
#define GST_A2DP_SINK(obj) \
@ -39,45 +38,45 @@ G_BEGIN_DECLS
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_A2DP_SINK))
#define GST_IS_A2DP_SINK_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_A2DP_SINK))
typedef struct _GstA2dpSink GstA2dpSink;
typedef struct _GstA2dpSinkClass GstA2dpSinkClass;
struct _GstA2dpSink {
GstBin bin;
struct _GstA2dpSink
{
GstBin bin;
GstElement *rtp;
GstAvdtpSink *sink;
GstElement *capsfilter;
GstElement *fakesink;
GstElement *rtp;
GstAvdtpSink *sink;
GstElement *capsfilter;
GstElement *fakesink;
gchar *device;
gchar *transport;
gboolean autoconnect;
gboolean sink_is_in_bin;
gchar *device;
gchar *transport;
gboolean autoconnect;
gboolean sink_is_in_bin;
GstPad *ghostpad;
GstPadQueryFunction ghostpad_queryfunc;
GstPadEventFunction ghostpad_eventfunc;
GstPad *ghostpad;
GstPadQueryFunction ghostpad_queryfunc;
GstPadEventFunction ghostpad_eventfunc;
GstEvent *segment_event;
/* Store the tags received before the a2dpsender sink is created
* when it is created we forward this to it */
GstTagList *taglist;
GstEvent *segment_event;
/* Store the tags received before the a2dpsender sink is created
* when it is created we forward this to it */
GstTagList *taglist;
GMutex cb_mutex;
GMutex cb_mutex;
};
struct _GstA2dpSinkClass {
GstBinClass parent_class;
struct _GstA2dpSinkClass
{
GstBinClass parent_class;
};
GType gst_a2dp_sink_get_type(void);
GType gst_a2dp_sink_get_type (void);
gboolean gst_a2dp_sink_plugin_init (GstPlugin * plugin);
GstCaps *gst_a2dp_sink_get_device_caps(GstA2dpSink *self);
GstCaps *gst_a2dp_sink_get_device_caps (GstA2dpSink * self);
G_END_DECLS
#endif

650
sys/bluez/gstavdtpsink.c
View file

@ -43,8 +43,6 @@
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
@ -58,19 +56,6 @@ GST_DEBUG_CATEGORY_STATIC (avdtp_sink_debug);
g_mutex_unlock(&s->sink_lock); \
} G_STMT_END
struct bluetooth_data
{
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)
@ -105,23 +90,6 @@ static GstStaticPadTemplate avdtp_sink_factory =
GST_RTP_PAYLOAD_DYNAMIC_STRING ", "
"clock-rate = (int) 90000, " "encoding-name = (string) \"MPA\""));
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)
{
@ -134,20 +102,7 @@ gst_avdtp_sink_stop (GstBaseSink * basesink)
self->watch_id = 0;
}
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;
}
gst_avdtp_connection_release (&self->conn);
if (self->stream_caps) {
gst_caps_unref (self->stream_caps);
@ -167,14 +122,9 @@ gst_avdtp_sink_finalize (GObject * object)
{
GstAvdtpSink *self = GST_AVDTP_SINK (object);
if (self->data)
gst_avdtp_sink_stop (GST_BASE_SINK (self));
gst_avdtp_sink_stop (GST_BASE_SINK (self));
if (self->device)
g_free (self->device);
if (self->transport)
g_free (self->transport);
gst_avdtp_connection_reset (&self->conn);
g_mutex_clear (&self->sink_lock);
@ -191,7 +141,7 @@ gst_avdtp_sink_set_property (GObject * object, guint prop_id,
case PROP_DEVICE:
if (sink->device)
g_free (sink->device);
sink->device = g_value_dup_string (value);
gst_avdtp_connection_set_device (&sink->conn, g_value_get_string (value));
break;
case PROP_AUTOCONNECT:
@ -201,7 +151,8 @@ gst_avdtp_sink_set_property (GObject * object, guint prop_id,
case PROP_TRANSPORT:
if (sink->transport)
g_free (sink->transport);
sink->transport = g_value_dup_string (value);
gst_avdtp_connection_set_transport (&sink->conn,
g_value_get_string (value));
break;
default:
@ -218,7 +169,7 @@ gst_avdtp_sink_get_property (GObject * object, guint prop_id,
switch (prop_id) {
case PROP_DEVICE:
g_value_set_string (value, sink->device);
g_value_set_string (value, sink->conn.device);
break;
case PROP_AUTOCONNECT:
@ -226,7 +177,7 @@ gst_avdtp_sink_get_property (GObject * object, guint prop_id,
break;
case PROP_TRANSPORT:
g_value_set_string (value, sink->transport);
g_value_set_string (value, sink->conn.transport);
break;
default:
@ -235,300 +186,6 @@ gst_avdtp_sink_get_property (GObject * object, guint prop_id,
}
}
static GstStructure *
gst_avdtp_sink_parse_sbc_raw (GstAvdtpSink * self)
{
a2dp_sbc_t *sbc = (a2dp_sbc_t *) self->data->config;
GstStructure *structure;
GValue value = G_VALUE_INIT;
GValue list = G_VALUE_INIT;
gboolean mono, stereo;
structure = gst_structure_new_empty ("audio/x-sbc");
/* mode */
g_value_init (&list, GST_TYPE_LIST);
g_value_init (&value, G_TYPE_STRING);
if (sbc->channel_mode & SBC_CHANNEL_MODE_MONO) {
g_value_set_static_string (&value, "mono");
gst_value_list_prepend_value (&list, &value);
}
if (sbc->channel_mode & SBC_CHANNEL_MODE_STEREO) {
g_value_set_static_string (&value, "stereo");
gst_value_list_prepend_value (&list, &value);
}
if (sbc->channel_mode & SBC_CHANNEL_MODE_DUAL_CHANNEL) {
g_value_set_static_string (&value, "dual");
gst_value_list_prepend_value (&list, &value);
}
if (sbc->channel_mode & SBC_CHANNEL_MODE_JOINT_STEREO) {
g_value_set_static_string (&value, "joint");
gst_value_list_prepend_value (&list, &value);
}
g_value_unset (&value);
gst_structure_take_value (structure, "channel-mode", &list);
/* subbands */
g_value_init (&list, GST_TYPE_LIST);
g_value_init (&value, G_TYPE_INT);
if (sbc->subbands & SBC_SUBBANDS_4) {
g_value_set_int (&value, 4);
gst_value_list_prepend_value (&list, &value);
}
if (sbc->subbands & SBC_SUBBANDS_8) {
g_value_set_int (&value, 8);
gst_value_list_prepend_value (&list, &value);
}
g_value_unset (&value);
gst_structure_take_value (structure, "subbands", &list);
/* blocks */
g_value_init (&list, GST_TYPE_LIST);
g_value_init (&value, G_TYPE_INT);
if (sbc->block_length & SBC_BLOCK_LENGTH_16) {
g_value_set_int (&value, 16);
gst_value_list_prepend_value (&list, &value);
}
if (sbc->block_length & SBC_BLOCK_LENGTH_12) {
g_value_set_int (&value, 12);
gst_value_list_prepend_value (&list, &value);
}
if (sbc->block_length & SBC_BLOCK_LENGTH_8) {
g_value_set_int (&value, 8);
gst_value_list_prepend_value (&list, &value);
}
if (sbc->block_length & SBC_BLOCK_LENGTH_4) {
g_value_set_int (&value, 4);
gst_value_list_prepend_value (&list, &value);
}
g_value_unset (&value);
gst_structure_take_value (structure, "blocks", &list);
/* allocation */
g_value_init (&list, GST_TYPE_LIST);
g_value_init (&value, G_TYPE_STRING);
if (sbc->allocation_method & SBC_ALLOCATION_LOUDNESS) {
g_value_set_static_string (&value, "loudness");
gst_value_list_prepend_value (&list, &value);
}
if (sbc->allocation_method & SBC_ALLOCATION_SNR) {
g_value_set_static_string (&value, "snr");
gst_value_list_prepend_value (&list, &value);
}
g_value_unset (&value);
gst_structure_take_value (structure, "allocation-method", &list);
/* rate */
g_value_init (&list, GST_TYPE_LIST);
g_value_init (&value, G_TYPE_INT);
if (sbc->frequency & SBC_SAMPLING_FREQ_48000) {
g_value_set_int (&value, 48000);
gst_value_list_prepend_value (&list, &value);
}
if (sbc->frequency & SBC_SAMPLING_FREQ_44100) {
g_value_set_int (&value, 44100);
gst_value_list_prepend_value (&list, &value);
}
if (sbc->frequency & SBC_SAMPLING_FREQ_32000) {
g_value_set_int (&value, 32000);
gst_value_list_prepend_value (&list, &value);
}
if (sbc->frequency & SBC_SAMPLING_FREQ_16000) {
g_value_set_int (&value, 16000);
gst_value_list_prepend_value (&list, &value);
}
g_value_unset (&value);
gst_structure_take_value (structure, "rate", &list);
/* bitpool */
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_take_value (structure, "bitpool", &value);
/* channels */
mono = FALSE;
stereo = FALSE;
if (sbc->channel_mode & SBC_CHANNEL_MODE_MONO)
mono = TRUE;
if ((sbc->channel_mode & SBC_CHANNEL_MODE_STEREO) ||
(sbc->channel_mode &
SBC_CHANNEL_MODE_DUAL_CHANNEL) ||
(sbc->channel_mode & SBC_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_take_value (structure, "channels", &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 = G_VALUE_INIT;
GValue list = G_VALUE_INIT;
gboolean mono, stereo;
GST_LOG_OBJECT (self, "parsing mpeg caps");
if ((mpeg->layer & (MPEG_LAYER_MP1 | MPEG_LAYER_MP2 | MPEG_LAYER_MP3)) == 0) {
GST_WARNING_OBJECT (self, "no valid mpeg layer");
return NULL;
}
structure = gst_structure_new_empty ("audio/mpeg");
g_value_init (&list, GST_TYPE_LIST);
g_value_init (&value, G_TYPE_INT);
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);
g_value_unset (&value);
gst_structure_take_value (structure, "mpegversion", &list);
/* layer */
GST_LOG_OBJECT (self, "setting mpeg layer");
g_value_init (&list, GST_TYPE_LIST);
g_value_init (&value, G_TYPE_INT);
if (mpeg->layer & MPEG_LAYER_MP1) {
g_value_set_int (&value, 1);
gst_value_list_prepend_value (&list, &value);
}
if (mpeg->layer & MPEG_LAYER_MP2) {
g_value_set_int (&value, 2);
gst_value_list_prepend_value (&list, &value);
}
if (mpeg->layer & MPEG_LAYER_MP3) {
g_value_set_int (&value, 3);
gst_value_list_prepend_value (&list, &value);
}
g_value_unset (&value);
gst_structure_take_value (structure, "layer", &list);
/* rate */
GST_LOG_OBJECT (self, "setting mpeg rate");
g_value_init (&list, GST_TYPE_LIST);
g_value_init (&value, G_TYPE_INT);
if (mpeg->frequency & MPEG_SAMPLING_FREQ_48000) {
g_value_set_int (&value, 48000);
gst_value_list_prepend_value (&list, &value);
}
if (mpeg->frequency & MPEG_SAMPLING_FREQ_44100) {
g_value_set_int (&value, 44100);
gst_value_list_prepend_value (&list, &value);
}
if (mpeg->frequency & MPEG_SAMPLING_FREQ_32000) {
g_value_set_int (&value, 32000);
gst_value_list_prepend_value (&list, &value);
}
if (mpeg->frequency & MPEG_SAMPLING_FREQ_24000) {
g_value_set_int (&value, 24000);
gst_value_list_prepend_value (&list, &value);
}
if (mpeg->frequency & MPEG_SAMPLING_FREQ_22050) {
g_value_set_int (&value, 22050);
gst_value_list_prepend_value (&list, &value);
}
if (mpeg->frequency & MPEG_SAMPLING_FREQ_16000) {
g_value_set_int (&value, 16000);
gst_value_list_prepend_value (&list, &value);
}
g_value_unset (&value);
gst_structure_take_value (structure, "rate", &list);
/* channels */
GST_LOG_OBJECT (self, "setting mpeg channels");
mono = FALSE;
stereo = FALSE;
if (mpeg->channel_mode & MPEG_CHANNEL_MODE_MONO)
mono = TRUE;
if ((mpeg->channel_mode & MPEG_CHANNEL_MODE_STEREO) ||
(mpeg->channel_mode &
MPEG_CHANNEL_MODE_DUAL_CHANNEL) ||
(mpeg->channel_mode & MPEG_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_take_value (structure, "channels", &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)
{
GST_LOG_OBJECT (self, "updating device caps");
if (self->data->config_size == 0 || self->data->config == NULL)
return FALSE;
return gst_avdtp_sink_update_config (self);
}
static gint
gst_avdtp_sink_get_channel_mode (const gchar * mode)
{
@ -594,194 +251,6 @@ gst_avdtp_sink_event (GstBaseSink * basesink, GstEvent * event)
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");
if (!msg) {
GST_ERROR_OBJECT (self, "D-Bus Memory allocation failed");
return FALSE;
}
reply = dbus_connection_send_with_reply_and_block (self->data->conn,
msg, -1, &err);
dbus_message_unref (msg);
if (dbus_error_is_set (&err)) {
GST_ERROR_OBJECT (self, "GetProperties failed: %s", err.message);
dbus_error_free (&err);
return FALSE;
}
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 (reply);
return FALSE;
}
static gboolean
gst_avdtp_sink_start (GstBaseSink * basesink)
{
@ -789,75 +258,35 @@ gst_avdtp_sink_start (GstBaseSink * basesink)
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)
if (self->conn.transport == NULL)
return FALSE;
return gst_avdtp_sink_transport_get_properties (self);
}
static gboolean
gst_avdtp_sink_conf_recv_stream_fd (GstAvdtpSink * self)
{
struct bluetooth_data *data = self->data;
GError *gerr = NULL;
GIOStatus status;
GIOFlags flags;
int fd;
/* Proceed if stream was already acquired */
if (self->stream == NULL) {
GST_ERROR_OBJECT (self, "Error while configuring device: "
"could not acquire audio socket");
if (!gst_avdtp_connection_acquire (&self->conn)) {
GST_ERROR_OBJECT (self, "Failed to acquire connection");
return FALSE;
}
/* 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");
if (!gst_avdtp_connection_get_properties (&self->conn)) {
GST_ERROR_OBJECT (self, "Failed to get transport properties");
return FALSE;
}
fd = g_io_channel_unix_get_fd (self->stream);
if (self->dev_caps)
gst_caps_unref (self->dev_caps);
/* 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;
self->dev_caps = gst_avdtp_connection_get_caps (&self->conn);
if (!self->dev_caps) {
GST_ERROR_OBJECT (self, "Failed to get device caps");
return FALSE;
}
/* 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));
GST_DEBUG_OBJECT (self, "Got connection caps: " GST_PTR_FORMAT,
self->dev_caps);
return TRUE;
}
@ -870,7 +299,7 @@ gst_avdtp_sink_preroll (GstBaseSink * basesink, GstBuffer * buffer)
GST_AVDTP_SINK_MUTEX_LOCK (sink);
ret = gst_avdtp_sink_conf_recv_stream_fd (sink);
ret = gst_avdtp_connection_conf_recv_stream_fd (&sink->conn);
GST_AVDTP_SINK_MUTEX_UNLOCK (sink);
@ -896,7 +325,7 @@ gst_avdtp_sink_render (GstBaseSink * basesink, GstBuffer * buffer)
g_assert (!(g_io_channel_get_flags (self->stream) & G_IO_FLAG_NONBLOCK));
/* FIXME: why not use g_io_channel_write_chars() instead? */
fd = g_io_channel_unix_get_fd (self->stream);
fd = g_io_channel_unix_get_fd (self->conn.stream);
ret = write (fd, map.data, map.size);
if (ret < 0) {
/* FIXME: since this is probably fatal, shouldn't we post an error here? */
@ -913,8 +342,8 @@ gst_avdtp_sink_unlock (GstBaseSink * basesink)
{
GstAvdtpSink *self = GST_AVDTP_SINK (basesink);
if (self->stream != NULL)
g_io_channel_flush (self->stream, NULL);
if (self->conn.stream != NULL)
g_io_channel_flush (self->conn.stream, NULL);
return TRUE;
}
@ -967,11 +396,10 @@ gst_avdtp_sink_class_init (GstAvdtpSinkClass * klass)
static void
gst_avdtp_sink_init (GstAvdtpSink * self)
{
self->device = NULL;
self->transport = NULL;
self->data = NULL;
self->conn.device = NULL;
self->conn.transport = NULL;
self->stream = NULL;
self->conn.stream = NULL;
self->dev_caps = NULL;
@ -1021,39 +449,39 @@ gst_avdtp_sink_set_device_caps (GstAvdtpSink * self, GstCaps * caps)
guint
gst_avdtp_sink_get_link_mtu (GstAvdtpSink * sink)
{
return sink->data->link_mtu;
return sink->conn.data.link_mtu;
}
void
gst_avdtp_sink_set_device (GstAvdtpSink * self, const gchar * dev)
{
if (self->device != NULL)
g_free (self->device);
if (self->conn.device != NULL)
g_free (self->conn.device);
GST_LOG_OBJECT (self, "Setting device: %s", dev);
self->device = g_strdup (dev);
self->conn.device = g_strdup (dev);
}
void
gst_avdtp_sink_set_transport (GstAvdtpSink * self, const gchar * trans)
{
if (self->transport != NULL)
g_free (self->transport);
if (self->conn.transport != NULL)
g_free (self->conn.transport);
GST_LOG_OBJECT (self, "Setting transport: %s", trans);
self->transport = g_strdup (trans);
self->conn.transport = g_strdup (trans);
}
gchar *
gst_avdtp_sink_get_device (GstAvdtpSink * self)
{
return g_strdup (self->device);
return g_strdup (self->conn.device);
}
gchar *
gst_avdtp_sink_get_transport (GstAvdtpSink * self)
{
return g_strdup (self->transport);
return g_strdup (self->conn.transport);
}
void

66
sys/bluez/gstavdtpsink.h
View file

@ -26,9 +26,9 @@
#include <gst/gst.h>
#include <gst/base/gstbasesink.h>
#include "gstavdtputil.h"
G_BEGIN_DECLS
#define GST_TYPE_AVDTP_SINK \
(gst_avdtp_sink_get_type())
#define GST_AVDTP_SINK(obj) \
@ -41,66 +41,58 @@ G_BEGIN_DECLS
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_AVDTP_SINK))
#define GST_IS_AVDTP_SINK_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_AVDTP_SINK))
typedef struct _GstAvdtpSink GstAvdtpSink;
typedef struct _GstAvdtpSinkClass GstAvdtpSinkClass;
struct bluetooth_data;
struct _GstAvdtpSink
{
GstBaseSink sink;
struct _GstAvdtpSink {
GstBaseSink sink;
GstAvdtpConnection conn;
gchar *device;
gchar *transport;
GIOChannel *stream;
gboolean autoconnect;
struct bluetooth_data *data;
gboolean autoconnect;
/* mp3 stream data (outside caps data) */
gint mp3_using_crc;
gint channel_mode;
/* mp3 stream data (outside caps data)*/
gint mp3_using_crc;
gint channel_mode;
/* stream connection data */
GstCaps *stream_caps;
/* stream connection data */
GstCaps *stream_caps;
GstCaps *dev_caps;
GstCaps *dev_caps;
GMutex sink_lock;
GMutex sink_lock;
guint watch_id;
guint watch_id;
};
struct _GstAvdtpSinkClass {
GstBaseSinkClass parent_class;
struct _GstAvdtpSinkClass
{
GstBaseSinkClass parent_class;
};
GType gst_avdtp_sink_get_type(void);
GType gst_avdtp_sink_get_type (void);
GstCaps *gst_avdtp_sink_get_device_caps(GstAvdtpSink *sink);
gboolean gst_avdtp_sink_set_device_caps(GstAvdtpSink *sink,
GstCaps *caps);
GstCaps *gst_avdtp_sink_get_device_caps (GstAvdtpSink * sink);
gboolean gst_avdtp_sink_set_device_caps (GstAvdtpSink * sink, GstCaps * caps);
guint gst_avdtp_sink_get_link_mtu(GstAvdtpSink *sink);
guint gst_avdtp_sink_get_link_mtu (GstAvdtpSink * sink);
void gst_avdtp_sink_set_device(GstAvdtpSink *sink,
const gchar *device);
void gst_avdtp_sink_set_device (GstAvdtpSink * sink, const gchar * device);
void gst_avdtp_sink_set_transport(GstAvdtpSink *sink,
const gchar *transport);
void gst_avdtp_sink_set_transport (GstAvdtpSink * sink,
const gchar * transport);
gchar *gst_avdtp_sink_get_device(GstAvdtpSink *sink);
gchar *gst_avdtp_sink_get_device (GstAvdtpSink * sink);
gchar *gst_avdtp_sink_get_transport(GstAvdtpSink *sink);
gchar *gst_avdtp_sink_get_transport (GstAvdtpSink * sink);
gboolean gst_avdtp_sink_plugin_init(GstPlugin *plugin);
gboolean gst_avdtp_sink_plugin_init (GstPlugin * plugin);
void gst_avdtp_sink_set_crc(GstAvdtpSink *self, gboolean crc);
void gst_avdtp_sink_set_crc (GstAvdtpSink * self, gboolean crc);
void gst_avdtp_sink_set_channel_mode(GstAvdtpSink *self,
const gchar *mode);
void gst_avdtp_sink_set_channel_mode (GstAvdtpSink * self, const gchar * mode);
G_END_DECLS
#endif /* __GST_AVDTP_SINK_H */

360
sys/bluez/gstavdtpsrc.c Normal file
View file

@ -0,0 +1,360 @@
/*
*
* BlueZ - Bluetooth protocol stack for Linux
*
* Copyright (C) 2012 Collabora Ltd.
*
*
* 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 <stdint.h>
#include <string.h>
#include <poll.h>
#include <gst/rtp/gstrtppayloads.h>
#include "gstavdtpsrc.h"
GST_DEBUG_CATEGORY_STATIC (avdtpsrc_debug);
#define GST_CAT_DEFAULT (avdtpsrc_debug)
enum
{
PROP_0,
PROP_TRANSPORT
};
GST_BOILERPLATE (GstAvdtpSrc, gst_avdtp_src, GstBaseSrc, GST_TYPE_BASE_SRC);
static GstStaticPadTemplate gst_avdtp_src_template =
GST_STATIC_PAD_TEMPLATE ("src", GST_PAD_SRC, 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\"; "));
static void gst_avdtp_src_finalize (GObject * object);
static void gst_avdtp_src_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static void gst_avdtp_src_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static GstCaps *gst_avdtp_src_getcaps (GstPad * pad);
static gboolean gst_avdtp_src_start (GstBaseSrc * bsrc);
static gboolean gst_avdtp_src_stop (GstBaseSrc * bsrc);
static GstFlowReturn gst_avdtp_src_create (GstBaseSrc * bsrc, guint64 offset,
guint length, GstBuffer ** outbuf);
static gboolean gst_avdtp_src_unlock (GstBaseSrc * bsrc);
static gboolean gst_avdtp_src_unlock_stop (GstBaseSrc * bsrc);
static void
gst_avdtp_src_base_init (gpointer klass)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_avdtp_src_template));
gst_element_class_set_details_simple (element_class,
"Bluetooth AVDTP Source",
"Codec/Depayloader/Network/RTP",
"Receives audio from an A2DP device",
"Arun Raghavan <arun.raghavan@collabora.co.uk>");
}
static void
gst_avdtp_src_class_init (GstAvdtpSrcClass * klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GstBaseSrcClass *basesrc_class = GST_BASE_SRC_CLASS (klass);
gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_avdtp_src_finalize);
gobject_class->set_property = GST_DEBUG_FUNCPTR (gst_avdtp_src_set_property);
gobject_class->get_property = GST_DEBUG_FUNCPTR (gst_avdtp_src_get_property);
basesrc_class->start = GST_DEBUG_FUNCPTR (gst_avdtp_src_start);
basesrc_class->stop = GST_DEBUG_FUNCPTR (gst_avdtp_src_stop);
basesrc_class->create = GST_DEBUG_FUNCPTR (gst_avdtp_src_create);
basesrc_class->unlock = GST_DEBUG_FUNCPTR (gst_avdtp_src_unlock);
basesrc_class->unlock_stop = GST_DEBUG_FUNCPTR (gst_avdtp_src_unlock_stop);
g_object_class_install_property (gobject_class, PROP_TRANSPORT,
g_param_spec_string ("transport",
"Transport", "Use configured transport", NULL, G_PARAM_READWRITE));
GST_DEBUG_CATEGORY_INIT (avdtpsrc_debug, "avdtpsrc", 0,
"Bluetooth AVDTP Source");
}
static void
gst_avdtp_src_init (GstAvdtpSrc * avdtpsrc, GstAvdtpSrcClass * klass)
{
avdtpsrc->poll = gst_poll_new (TRUE);
gst_base_src_set_format (GST_BASE_SRC (avdtpsrc), GST_FORMAT_DEFAULT);
gst_base_src_set_live (GST_BASE_SRC (avdtpsrc), TRUE);
gst_base_src_set_do_timestamp (GST_BASE_SRC (avdtpsrc), TRUE);
gst_pad_set_getcaps_function (GST_BASE_SRC_PAD (avdtpsrc),
GST_DEBUG_FUNCPTR (gst_avdtp_src_getcaps));
}
static void
gst_avdtp_src_finalize (GObject * object)
{
GstAvdtpSrc *avdtpsrc = GST_AVDTP_SRC (object);
gst_poll_free (avdtpsrc->poll);
gst_avdtp_connection_reset (&avdtpsrc->conn);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gst_avdtp_src_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstAvdtpSrc *avdtpsrc = GST_AVDTP_SRC (object);
switch (prop_id) {
case PROP_TRANSPORT:
g_value_set_string (value, avdtpsrc->conn.transport);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_avdtp_src_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstAvdtpSrc *avdtpsrc = GST_AVDTP_SRC (object);
switch (prop_id) {
case PROP_TRANSPORT:
gst_avdtp_connection_set_transport (&avdtpsrc->conn,
g_value_get_string (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static GstCaps *
gst_avdtp_src_getcaps (GstPad * pad)
{
GstAvdtpSrc *avdtpsrc = GST_AVDTP_SRC (gst_pad_get_parent_element (pad));
GstCaps *ret;
if (avdtpsrc->dev_caps) {
const GValue *value;
const char *format;
int rate;
GstStructure *structure = gst_caps_get_structure (avdtpsrc->dev_caps, 0);
format = gst_structure_get_name (structure);
if (g_str_equal (format, "audio/x-sbc")) {
ret = gst_caps_new_simple ("application/x-rtp",
"encoding-name", G_TYPE_STRING, "SBC", NULL);
} else if (g_str_equal (format, "audio/mpeg")) {
GST_ERROR_OBJECT (avdtpsrc, "Only SBC is supported at " "the moment");
}
value = gst_structure_get_value (structure, "rate");
if (!value || !G_VALUE_HOLDS_INT (value)) {
GST_ERROR_OBJECT (avdtpsrc, "Failed to get sample rate");
goto fail;
}
rate = g_value_get_int (value);
gst_caps_set_simple (ret, "clock-rate", G_TYPE_INT, rate, NULL);
} else {
ret = gst_caps_ref (GST_PAD_TEMPLATE_CAPS (GST_PAD_PAD_TEMPLATE (pad)));
}
return ret;
fail:
if (ret)
gst_caps_unref (ret);
return NULL;
}
static gboolean
gst_avdtp_src_start (GstBaseSrc * bsrc)
{
GstAvdtpSrc *avdtpsrc = GST_AVDTP_SRC (bsrc);
/* None of this can go into prepare() since we need to set up the
* connection to figure out what format the device is going to send us.
*/
if (!gst_avdtp_connection_acquire (&avdtpsrc->conn)) {
GST_ERROR_OBJECT (avdtpsrc, "Failed to acquire connection");
return FALSE;
}
if (!gst_avdtp_connection_get_properties (&avdtpsrc->conn)) {
GST_ERROR_OBJECT (avdtpsrc, "Failed to get transport properties");
goto fail;
}
if (!gst_avdtp_connection_conf_recv_stream_fd (&avdtpsrc->conn)) {
GST_ERROR_OBJECT (avdtpsrc, "Failed to configure stream fd");
goto fail;
}
GST_DEBUG_OBJECT (avdtpsrc, "Setting block size to link MTU (%d)",
avdtpsrc->conn.data.link_mtu);
gst_base_src_set_blocksize (GST_BASE_SRC (avdtpsrc),
avdtpsrc->conn.data.link_mtu);
avdtpsrc->dev_caps = gst_avdtp_connection_get_caps (&avdtpsrc->conn);
if (!avdtpsrc->dev_caps) {
GST_ERROR_OBJECT (avdtpsrc, "Failed to get device caps");
goto fail;
}
gst_poll_fd_init (&avdtpsrc->pfd);
avdtpsrc->pfd.fd = g_io_channel_unix_get_fd (avdtpsrc->conn.stream);
gst_poll_add_fd (avdtpsrc->poll, &avdtpsrc->pfd);
gst_poll_fd_ctl_read (avdtpsrc->poll, &avdtpsrc->pfd, TRUE);
gst_poll_set_flushing (avdtpsrc->poll, FALSE);
g_atomic_int_set (&avdtpsrc->unlocked, FALSE);
return TRUE;
fail:
gst_avdtp_connection_release (&avdtpsrc->conn);
return FALSE;
}
static gboolean
gst_avdtp_src_stop (GstBaseSrc * bsrc)
{
GstAvdtpSrc *avdtpsrc = GST_AVDTP_SRC (bsrc);
gst_poll_remove_fd (avdtpsrc->poll, &avdtpsrc->pfd);
gst_poll_set_flushing (avdtpsrc->poll, TRUE);
gst_avdtp_connection_release (&avdtpsrc->conn);
if (avdtpsrc->dev_caps) {
gst_caps_unref (avdtpsrc->dev_caps);
avdtpsrc->dev_caps = NULL;
}
return TRUE;
}
static GstFlowReturn
gst_avdtp_src_create (GstBaseSrc * bsrc, guint64 offset,
guint length, GstBuffer ** outbuf)
{
GstAvdtpSrc *avdtpsrc = GST_AVDTP_SRC (bsrc);
GstBuffer *buf = NULL;
int ret;
if (g_atomic_int_get (&avdtpsrc->unlocked))
return GST_FLOW_WRONG_STATE;
/* We don't operate in GST_FORMAT_BYTES, so offset is ignored */
while ((ret = gst_poll_wait (avdtpsrc->poll, GST_CLOCK_TIME_NONE))) {
if (g_atomic_int_get (&avdtpsrc->unlocked))
/* We're unlocked, time to gtfo */
return GST_FLOW_WRONG_STATE;
if (ret < 0)
/* Something went wrong */
goto read_error;
if (ret > 0)
/* Got some data */
break;
}
buf = gst_buffer_new_and_alloc (length);
ret = read (avdtpsrc->pfd.fd, GST_BUFFER_DATA (buf), length);
if (ret < 0)
goto read_error;
GST_LOG_OBJECT (avdtpsrc, "Read %d bytes", ret);
if (ret < length) {
/* Create a subbuffer for as much as we've actually read */
*outbuf = gst_buffer_create_sub (buf, 0, ret);
gst_buffer_unref (buf);
} else
*outbuf = buf;
return GST_FLOW_OK;
read_error:
gst_buffer_unref (buf);
GST_ERROR_OBJECT (avdtpsrc, "Error while reading audio data: %s",
strerror (errno));
return GST_FLOW_ERROR;
}
static gboolean
gst_avdtp_src_unlock (GstBaseSrc * bsrc)
{
GstAvdtpSrc *avdtpsrc = GST_AVDTP_SRC (bsrc);
g_atomic_int_set (&avdtpsrc->unlocked, TRUE);
gst_poll_set_flushing (avdtpsrc->poll, TRUE);
}
static gboolean
gst_avdtp_src_unlock_stop (GstBaseSrc * bsrc)
{
GstAvdtpSrc *avdtpsrc = GST_AVDTP_SRC (bsrc);
g_atomic_int_set (&avdtpsrc->unlocked, FALSE);
gst_poll_set_flushing (avdtpsrc->poll, FALSE);
/* Flush out any stale data that might be buffered */
gst_avdtp_connection_conf_recv_stream_fd (&avdtpsrc->conn);
}
gboolean
gst_avdtp_src_plugin_init (GstPlugin * plugin)
{
return gst_element_register (plugin, "avdtpsrc", GST_RANK_NONE,
GST_TYPE_AVDTP_SRC);
}

65
sys/bluez/gstavdtpsrc.h Normal file
View file

@ -0,0 +1,65 @@
/*
*
* BlueZ - Bluetooth protocol stack for Linux
*
* Copyright (C) 2012 Collabora Ltd.
*
*
* 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
*
*/
#ifndef __GST_AVDTP_SRC_H
#define __GST_AVDTP_SRC_H
#include <gst/gst.h>
#include <gst/base/gstbasesrc.h>
#include "gstavdtputil.h"
G_BEGIN_DECLS
#define GST_TYPE_AVDTP_SRC \
(gst_avdtp_src_get_type())
#define GST_AVDTP_SRC(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_AVDTP_SRC, GstAvdtpSrc))
#define GST_AVDTP_SRC_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_AVDTP_SRC, GstAvdtpSrc))
#define GST_IS_AVDTP_SRC(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_AVDTP_SRC))
#define GST_IS_AVDTP_SRC_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_AVDTP_SRC))
typedef struct _GstAvdtpSrc GstAvdtpSrc;
typedef struct _GstAvdtpSrcClass GstAvdtpSrcClass;
struct _GstAvdtpSrcClass
{
GstBaseSrcClass parentclass;
};
struct _GstAvdtpSrc
{
GstBaseSrc basesrc;
GstAvdtpConnection conn;
GstCaps *dev_caps;
GstPoll *poll;
GstPollFD pfd;
volatile gint unlocked;
};
gboolean gst_avdtp_src_plugin_init (GstPlugin * plugin);
G_END_DECLS
#endif

672
sys/bluez/gstavdtputil.c Normal file
View file

@ -0,0 +1,672 @@
/*
*
* BlueZ - Bluetooth protocol stack for Linux
*
* Copyright (C) 2004-2010 Marcel Holtmann <marcel@holtmann.org>
* Copyright (C) 2012 Collabora Ltd.
*
*
* 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 <stdint.h>
#include <bluetooth/bluetooth.h>
#include "a2dp-codecs.h"
#include <gst/gst.h>
#include "gstavdtputil.h"
#define TEMPLATE_MAX_BITPOOL 64
gboolean
gst_avdtp_connection_acquire (GstAvdtpConnection * conn)
{
DBusMessage *msg, *reply;
DBusError err;
const char *access_type = "rw";
int fd;
uint16_t imtu, omtu;
dbus_error_init (&err);
if (conn->transport == NULL) {
GST_ERROR ("No transport specified");
return FALSE;
}
if (conn->data.conn == NULL)
conn->data.conn = dbus_bus_get (DBUS_BUS_SYSTEM, &err);
msg = dbus_message_new_method_call ("org.bluez", conn->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 (conn->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);
conn->stream = g_io_channel_unix_new (fd);
g_io_channel_set_encoding (conn->stream, NULL, NULL);
g_io_channel_set_close_on_unref (conn->stream, TRUE);
conn->data.link_mtu = omtu;
return TRUE;
fail:
GST_ERROR ("Failed to acquire transport stream: %s", err.message);
dbus_error_free (&err);
if (reply)
dbus_message_unref (reply);
return FALSE;
}
static void
gst_avdtp_connection_transport_release (GstAvdtpConnection * conn)
{
DBusMessage *msg;
const char *access_type = "rw";
msg = dbus_message_new_method_call ("org.bluez", conn->transport,
"org.bluez.MediaTransport", "Release");
dbus_message_append_args (msg, DBUS_TYPE_STRING, &access_type,
DBUS_TYPE_INVALID);
dbus_connection_send (conn->data.conn, msg, NULL);
dbus_message_unref (msg);
}
void
gst_avdtp_connection_release (GstAvdtpConnection * conn)
{
if (conn->stream) {
g_io_channel_shutdown (conn->stream, TRUE, NULL);
g_io_channel_unref (conn->stream);
conn->stream = NULL;
}
if (conn->data.uuid) {
g_free (conn->data.uuid);
conn->data.uuid = NULL;
}
if (conn->data.config) {
g_free (conn->data.config);
conn->data.config = NULL;
}
if (conn->data.conn) {
if (conn->transport)
gst_avdtp_connection_transport_release (conn);
dbus_connection_unref (conn->data.conn);
conn->data.conn = FALSE;
}
}
void
gst_avdtp_connection_reset (GstAvdtpConnection * conn)
{
gst_avdtp_connection_release (conn);
if (conn->device) {
g_free (conn->device);
conn->device = NULL;
}
if (conn->transport) {
g_free (conn->transport);
conn->transport = NULL;
}
}
void
gst_avdtp_connection_set_device (GstAvdtpConnection * conn, const char *device)
{
if (conn->device)
g_free (conn->device);
conn->device = g_strdup (device);
}
void
gst_avdtp_connection_set_transport (GstAvdtpConnection * conn,
const char *transport)
{
if (conn->transport)
g_free (conn->transport);
conn->transport = g_strdup (transport);
}
static gboolean
gst_avdtp_connection_parse_property (GstAvdtpConnection * conn,
DBusMessageIter * i)
{
const char *key;
DBusMessageIter variant_i;
if (dbus_message_iter_get_arg_type (i) != DBUS_TYPE_STRING) {
GST_ERROR ("Property name not a string.");
return FALSE;
}
dbus_message_iter_get_basic (i, &key);
if (!dbus_message_iter_next (i)) {
GST_ERROR ("Property value missing");
return FALSE;
}
if (dbus_message_iter_get_arg_type (i) != DBUS_TYPE_VARIANT) {
GST_ERROR ("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)
conn->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 (conn->data.uuid);
conn->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 (conn->data.config);
conn->data.config = g_new0 (guint8, size);
conn->data.config_size = size;
memcpy (conn->data.config, value, size);
}
break;
}
}
return TRUE;
}
gboolean
gst_avdtp_connection_get_properties (GstAvdtpConnection * conn)
{
DBusMessage *msg, *reply;
DBusMessageIter arg_i, ele_i;
DBusError err;
dbus_error_init (&err);
msg = dbus_message_new_method_call ("org.bluez", conn->transport,
"org.bluez.MediaTransport", "GetProperties");
if (!msg) {
GST_ERROR ("D-Bus Memory allocation failed");
return FALSE;
}
reply = dbus_connection_send_with_reply_and_block (conn->data.conn,
msg, -1, &err);
dbus_message_unref (msg);
if (dbus_error_is_set (&err)) {
GST_ERROR ("GetProperties failed: %s", err.message);
dbus_error_free (&err);
return FALSE;
}
if (!dbus_message_iter_init (reply, &arg_i)) {
GST_ERROR ("GetProperties reply has no arguments.");
goto fail;
}
if (dbus_message_iter_get_arg_type (&arg_i) != DBUS_TYPE_ARRAY) {
GST_ERROR ("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_connection_parse_property (conn, &dict_i);
}
if (!dbus_message_iter_next (&ele_i))
break;
}
return TRUE;
fail:
dbus_message_unref (reply);
return FALSE;
}
static GstStructure *
gst_avdtp_util_parse_sbc_raw (void *config)
{
a2dp_sbc_t *sbc = (a2dp_sbc_t *) 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);
list = g_value_init (g_new0 (GValue, 1), GST_TYPE_LIST);
/* mode */
if (sbc->channel_mode & SBC_CHANNEL_MODE_MONO) {
g_value_set_static_string (value, "mono");
gst_value_list_prepend_value (list, value);
}
if (sbc->channel_mode & SBC_CHANNEL_MODE_STEREO) {
g_value_set_static_string (value, "stereo");
gst_value_list_prepend_value (list, value);
}
if (sbc->channel_mode & SBC_CHANNEL_MODE_DUAL_CHANNEL) {
g_value_set_static_string (value, "dual");
gst_value_list_prepend_value (list, value);
}
if (sbc->channel_mode & SBC_CHANNEL_MODE_JOINT_STEREO) {
g_value_set_static_string (value, "joint");
gst_value_list_prepend_value (list, value);
}
if (gst_value_list_get_size (list) == 1)
gst_structure_set_value (structure, "mode", value);
else
gst_structure_take_value (structure, "mode", list);
g_value_unset (value);
g_value_reset (list);
/* subbands */
value = g_value_init (value, G_TYPE_INT);
if (sbc->subbands & SBC_SUBBANDS_4) {
g_value_set_int (value, 4);
gst_value_list_prepend_value (list, value);
}
if (sbc->subbands & SBC_SUBBANDS_8) {
g_value_set_int (value, 8);
gst_value_list_prepend_value (list, value);
}
if (gst_value_list_get_size (list) == 1)
gst_structure_set_value (structure, "subbands", value);
else
gst_structure_take_value (structure, "subbands", list);
g_value_unset (value);
g_value_reset (list);
/* blocks */
value = g_value_init (value, G_TYPE_INT);
if (sbc->block_length & SBC_BLOCK_LENGTH_16) {
g_value_set_int (value, 16);
gst_value_list_prepend_value (list, value);
}
if (sbc->block_length & SBC_BLOCK_LENGTH_12) {
g_value_set_int (value, 12);
gst_value_list_prepend_value (list, value);
}
if (sbc->block_length & SBC_BLOCK_LENGTH_8) {
g_value_set_int (value, 8);
gst_value_list_prepend_value (list, value);
}
if (sbc->block_length & SBC_BLOCK_LENGTH_4) {
g_value_set_int (value, 4);
gst_value_list_prepend_value (list, value);
}
if (gst_value_list_get_size (list) == 1)
gst_structure_set_value (structure, "blocks", value);
else
gst_structure_take_value (structure, "blocks", list);
g_value_unset (value);
g_value_reset (list);
/* allocation */
g_value_init (value, G_TYPE_STRING);
if (sbc->allocation_method & SBC_ALLOCATION_LOUDNESS) {
g_value_set_static_string (value, "loudness");
gst_value_list_prepend_value (list, value);
}
if (sbc->allocation_method & SBC_ALLOCATION_SNR) {
g_value_set_static_string (value, "snr");
gst_value_list_prepend_value (list, value);
}
if (gst_value_list_get_size (list) == 1)
gst_structure_set_value (structure, "allocation", value);
else
gst_structure_take_value (structure, "allocation", list);
g_value_unset (value);
g_value_reset (list);
/* rate */
g_value_init (value, G_TYPE_INT);
if (sbc->frequency & SBC_SAMPLING_FREQ_48000) {
g_value_set_int (value, 48000);
gst_value_list_prepend_value (list, value);
}
if (sbc->frequency & SBC_SAMPLING_FREQ_44100) {
g_value_set_int (value, 44100);
gst_value_list_prepend_value (list, value);
}
if (sbc->frequency & SBC_SAMPLING_FREQ_32000) {
g_value_set_int (value, 32000);
gst_value_list_prepend_value (list, value);
}
if (sbc->frequency & SBC_SAMPLING_FREQ_16000) {
g_value_set_int (value, 16000);
gst_value_list_prepend_value (list, value);
}
if (gst_value_list_get_size (list) == 1)
gst_structure_set_value (structure, "rate", value);
else
gst_structure_take_value (structure, "rate", list);
g_value_unset (value);
g_value_reset (list);
/* 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 & SBC_CHANNEL_MODE_MONO)
mono = TRUE;
if ((sbc->channel_mode & SBC_CHANNEL_MODE_STEREO) ||
(sbc->channel_mode &
SBC_CHANNEL_MODE_DUAL_CHANNEL) ||
(sbc->channel_mode & SBC_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 ("Unexpected number of channels");
g_value_set_int (value, 0);
}
}
gst_structure_set_value (structure, "channels", value);
g_value_unset (value);
g_free (value);
g_value_unset (list);
g_free (list);
return structure;
}
static GstStructure *
gst_avdtp_util_parse_mpeg_raw (void *config)
{
a2dp_mpeg_t *mpeg = (a2dp_mpeg_t *) config;
GstStructure *structure;
GValue *value;
GValue *list;
gboolean valid_layer = FALSE;
gboolean mono, stereo;
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 */
list = g_value_init (g_new0 (GValue, 1), GST_TYPE_LIST);
if (mpeg->layer & MPEG_LAYER_MP1) {
g_value_set_int (value, 1);
gst_value_list_prepend_value (list, value);
valid_layer = TRUE;
}
if (mpeg->layer & MPEG_LAYER_MP2) {
g_value_set_int (value, 2);
gst_value_list_prepend_value (list, value);
valid_layer = TRUE;
}
if (mpeg->layer & MPEG_LAYER_MP3) {
g_value_set_int (value, 3);
gst_value_list_prepend_value (list, value);
valid_layer = TRUE;
}
if (list) {
if (gst_value_list_get_size (list) == 1)
gst_structure_set_value (structure, "layer", value);
else
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 */
list = g_value_init (g_new0 (GValue, 1), GST_TYPE_LIST);
if (mpeg->frequency & MPEG_SAMPLING_FREQ_48000) {
g_value_set_int (value, 48000);
gst_value_list_prepend_value (list, value);
}
if (mpeg->frequency & MPEG_SAMPLING_FREQ_44100) {
g_value_set_int (value, 44100);
gst_value_list_prepend_value (list, value);
}
if (mpeg->frequency & MPEG_SAMPLING_FREQ_32000) {
g_value_set_int (value, 32000);
gst_value_list_prepend_value (list, value);
}
if (mpeg->frequency & MPEG_SAMPLING_FREQ_24000) {
g_value_set_int (value, 24000);
gst_value_list_prepend_value (list, value);
}
if (mpeg->frequency & MPEG_SAMPLING_FREQ_22050) {
g_value_set_int (value, 22050);
gst_value_list_prepend_value (list, value);
}
if (mpeg->frequency & MPEG_SAMPLING_FREQ_16000) {
g_value_set_int (value, 16000);
gst_value_list_prepend_value (list, value);
}
g_value_unset (value);
if (list) {
if (gst_value_list_get_size (list) == 1)
gst_structure_set_value (structure, "rate", value);
else
gst_structure_set_value (structure, "rate", list);
g_free (list);
list = NULL;
}
/* channels */
mono = FALSE;
stereo = FALSE;
if (mpeg->channel_mode & MPEG_CHANNEL_MODE_MONO)
mono = TRUE;
if ((mpeg->channel_mode & MPEG_CHANNEL_MODE_STEREO) ||
(mpeg->channel_mode &
MPEG_CHANNEL_MODE_DUAL_CHANNEL) ||
(mpeg->channel_mode & MPEG_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 ("Unexpected number of channels");
g_value_set_int (value, 0);
}
}
gst_structure_set_value (structure, "channels", value);
g_free (value);
return structure;
}
GstCaps *
gst_avdtp_connection_get_caps (GstAvdtpConnection * conn)
{
GstCaps *caps;
GstStructure *structure;
if (conn->data.config_size == 0 || conn->data.config == NULL)
return NULL;
switch (conn->data.codec) {
case A2DP_CODEC_SBC:
structure = gst_avdtp_util_parse_sbc_raw (conn->data.config);
break;
case A2DP_CODEC_MPEG12:
structure = gst_avdtp_util_parse_mpeg_raw (conn->data.config);
break;
default:
GST_ERROR ("Unsupported configuration");
return NULL;
}
if (structure == NULL)
return FALSE;
caps = gst_caps_new_full (structure, NULL);
return caps;
}
gboolean
gst_avdtp_connection_conf_recv_stream_fd (GstAvdtpConnection * conn)
{
struct bluetooth_data *data = &conn->data;
GError *gerr = NULL;
GIOStatus status;
GIOFlags flags;
int fd;
/* Proceed if stream was already acquired */
if (conn->stream == NULL) {
GST_ERROR ("Error while configuring device: "
"could not acquire audio socket");
return FALSE;
}
/* set stream socket to nonblock */
flags = g_io_channel_get_flags (conn->stream);
flags |= G_IO_FLAG_NONBLOCK;
status = g_io_channel_set_flags (conn->stream, flags, &gerr);
if (status != G_IO_STATUS_NORMAL)
GST_WARNING ("Error while setting server socket to nonblock");
fd = g_io_channel_unix_get_fd (conn->stream);
/* It is possible there is some outstanding
data in the pipe - we have to empty it */
while (1) {
ssize_t bread = read (fd, data->buffer, data->link_mtu);
if (bread <= 0)
break;
}
/* set stream socket to block */
flags = g_io_channel_get_flags (conn->stream);
flags &= ~G_IO_FLAG_NONBLOCK;
status = g_io_channel_set_flags (conn->stream, flags, &gerr);
if (status != G_IO_STATUS_NORMAL)
GST_WARNING ("Error while setting server socket to block");
memset (data->buffer, 0, sizeof (data->buffer));
return TRUE;
}

69
sys/bluez/gstavdtputil.h Normal file
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@ -0,0 +1,69 @@
/*
*
* BlueZ - Bluetooth protocol stack for Linux
*
* Copyright (C) 2004-2010 Marcel Holtmann <marcel@holtmann.org>
* Copyright (C) 2012 Collabora Ltd.
*
*
* 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
*
*/
#ifndef __GST_AVDTP_UTIL_H
#define __GST_AVDTP_UTIL_H
#include <glib.h>
#include <dbus/dbus.h>
G_BEGIN_DECLS
#define DEFAULT_CODEC_BUFFER_SIZE 2048
struct bluetooth_data
{
guint link_mtu;
DBusConnection *conn;
guint8 codec; /* Bluetooth transport configuration */
gchar *uuid;
guint8 *config;
gint config_size;
gchar buffer[DEFAULT_CODEC_BUFFER_SIZE]; /* Codec transfer buffer */
};
typedef struct _GstAvdtpConnection GstAvdtpConnection;
struct _GstAvdtpConnection
{
gchar *device;
gchar *transport;
GIOChannel *stream;
struct bluetooth_data data;
};
gboolean gst_avdtp_connection_acquire (GstAvdtpConnection * conn);
void gst_avdtp_connection_release (GstAvdtpConnection * conn);
gboolean gst_avdtp_connection_get_properties (GstAvdtpConnection * conn);
GstCaps *gst_avdtp_connection_get_caps (GstAvdtpConnection * conn);
void gst_avdtp_connection_set_device (GstAvdtpConnection * conn,
const char *device);
void gst_avdtp_connection_set_transport (GstAvdtpConnection * conn,
const char *transport);
gboolean gst_avdtp_connection_conf_recv_stream_fd (GstAvdtpConnection * conn);
G_END_DECLS
#endif