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gstreamer/sys/bluez/gstavdtpsink.c
Johan Hedberg 8b5d0aba41 bluez: More coding style fixes
2013-01-09 14:30:11 +00:00

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/*
*
* BlueZ - Bluetooth protocol stack for Linux
*
* Copyright (C) 2004-2008 Marcel Holtmann <marcel@holtmann.org>
*
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <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 "ipc.h"
#include "rtp.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
struct bluetooth_data
{
struct bt_get_capabilities_rsp *caps; /* Bluetooth device caps */
guint link_mtu;
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
};
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 GIOError gst_avdtp_sink_audioservice_send (GstAvdtpSink * self,
const bt_audio_msg_header_t * msg);
static GIOError 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 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_flush (self->stream, NULL);
g_io_channel_close (self->stream);
g_io_channel_unref (self->stream);
self->stream = NULL;
}
if (self->data) {
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);
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;
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;
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);
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)
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_CODEC_SBC);
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;
GIOError err;
GError *gerr = NULL;
GIOStatus status;
GIOFlags flags;
gsize read;
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;
}
/* 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");
}
/* 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) {
err = g_io_channel_read (self->stream, data->buffer,
(gsize) data->link_mtu, &read);
if (err != G_IO_ERROR_NONE || read <= 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)
{
GstAvdtpSink *sink;
if (cond & G_IO_HUP || cond & G_IO_NVAL)
return FALSE;
else if (cond & G_IO_ERR) {
sink = GST_AVDTP_SINK (data);
GST_WARNING_OBJECT (sink, "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;
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 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");
sbc = (void *) gst_avdtp_find_caps (self, BT_A2DP_CODEC_SBC);
mpeg = (void *) gst_avdtp_find_caps (self, BT_A2DP_CODEC_MPEG12);
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;
GIOError io_error;
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->device, self->device, 18);
if (self->autoconnect)
req->flags |= BT_FLAG_AUTOCONNECT;
io_error = gst_avdtp_sink_audioservice_send (self, &req->h);
if (io_error != G_IO_ERROR_NONE) {
GST_ERROR_OBJECT (self, "Error while asking device caps");
return FALSE;
}
rsp->h.length = 0;
io_error = gst_avdtp_sink_audioservice_expect (self,
&rsp->h, BT_GET_CAPABILITIES);
if (io_error != G_IO_ERROR_NONE) {
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_start (GstBaseSink * basesink)
{
GstAvdtpSink *self = GST_AVDTP_SINK (basesink);
gint sk;
gint err;
GST_INFO_OBJECT (self, "start");
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);
goto failed;
}
self->server = g_io_channel_unix_new (sk);
self->watch_id = g_io_add_watch (self->server, G_IO_HUP | G_IO_ERR |
G_IO_NVAL, server_callback, self);
self->data = g_new0 (struct bluetooth_data, 1);
memset (self->data, 0, sizeof (struct bluetooth_data));
self->stream = NULL;
self->stream_caps = NULL;
self->mp3_using_crc = -1;
self->channel_mode = -1;
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;
GIOError io_error;
memset (req, 0, sizeof (buf));
req->h.type = BT_REQUEST;
req->h.name = BT_START_STREAM;
req->h.length = sizeof (*req);
io_error = gst_avdtp_sink_audioservice_send (self, &req->h);
if (io_error != G_IO_ERROR_NONE) {
GST_ERROR_OBJECT (self, "Error ocurred while sending " "start packet");
return FALSE;
}
rsp->h.length = sizeof (*rsp);
io_error = gst_avdtp_sink_audioservice_expect (self,
&rsp->h, BT_START_STREAM);
if (io_error != G_IO_ERROR_NONE) {
GST_ERROR_OBJECT (self, "Error while stream " "start confirmation");
return FALSE;
}
ind->h.length = sizeof (*ind);
io_error = gst_avdtp_sink_audioservice_expect (self, &ind->h, BT_NEW_STREAM);
if (io_error != G_IO_ERROR_NONE) {
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_set_configuration_req *req = (void *) buf;
struct bt_set_configuration_rsp *rsp = (void *) buf;
gboolean ret;
GIOError io_error;
gchar *temp;
GstStructure *structure;
temp = gst_caps_to_string (caps);
GST_DEBUG_OBJECT (self, "configuring device with caps: %s", temp);
g_free (temp);
memset (req, 0, sizeof (buf));
req->h.type = BT_REQUEST;
req->h.name = BT_SET_CONFIGURATION;
req->h.length = sizeof (*req);
req->access_mode = BT_CAPABILITIES_ACCESS_MODE_WRITE;
strncpy (req->device, self->device, 18);
structure = gst_caps_get_structure (caps, 0);
if (gst_structure_has_name (structure, "audio/x-sbc"))
ret = gst_avdtp_sink_init_sbc_pkt_conf (self, caps, (void *) &req->codec);
else if (gst_structure_has_name (structure, "audio/mpeg"))
ret = gst_avdtp_sink_init_mp3_pkt_conf (self, caps, (void *) &req->codec);
else
ret = FALSE;
if (!ret) {
GST_ERROR_OBJECT (self, "Couldn't parse caps " "to packet configuration");
return FALSE;
}
req->h.length += req->codec.length - sizeof (req->codec);
io_error = gst_avdtp_sink_audioservice_send (self, &req->h);
if (io_error != G_IO_ERROR_NONE) {
GST_ERROR_OBJECT (self, "Error ocurred while sending "
"configurarion packet");
return FALSE;
}
rsp->h.length = sizeof (*rsp);
io_error = gst_avdtp_sink_audioservice_expect (self,
&rsp->h, BT_SET_CONFIGURATION);
if (io_error != G_IO_ERROR_NONE) {
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);
gsize ret;
GIOError err;
err = g_io_channel_write (self->stream,
(gchar *) GST_BUFFER_DATA (buffer),
(gsize) (GST_BUFFER_SIZE (buffer)), &ret);
if (err != G_IO_ERROR_NONE) {
GST_ERROR_OBJECT (self, "Error while writting to socket: %d %s",
errno, 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));
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->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 GIOError
gst_avdtp_sink_audioservice_send (GstAvdtpSink * self,
const bt_audio_msg_header_t * msg)
{
GIOError error;
gsize written;
const char *type, *name;
uint16_t length;
length = msg->length ? msg->length : BT_SUGGESTED_BUFFER_SIZE;
error = g_io_channel_write (self->server, (const gchar *) msg, length,
&written);
if (error != G_IO_ERROR_NONE)
GST_ERROR_OBJECT (self, "Error sending data to audio service:"
" %s(%d)", strerror (errno), errno);
type = bt_audio_strtype (msg->type);
name = bt_audio_strname (msg->name);
GST_DEBUG_OBJECT (self, "sent: %s -> %s", type, name);
return error;
}
static GIOError
gst_avdtp_sink_audioservice_recv (GstAvdtpSink * self,
bt_audio_msg_header_t * inmsg)
{
GIOError status;
gsize bytes_read;
const char *type, *name;
uint16_t length;
length = inmsg->length ? inmsg->length : BT_SUGGESTED_BUFFER_SIZE;
status = g_io_channel_read (self->server, (gchar *) inmsg, length,
&bytes_read);
if (status != G_IO_ERROR_NONE) {
GST_ERROR_OBJECT (self, "Error receiving data from " "audio service");
return status;
}
type = bt_audio_strtype (inmsg->type);
if (!type) {
status = G_IO_ERROR_INVAL;
GST_ERROR_OBJECT (self, "Bogus message type %d "
"received from audio service", inmsg->type);
}
name = bt_audio_strname (inmsg->name);
if (!name) {
status = G_IO_ERROR_INVAL;
GST_ERROR_OBJECT (self, "Bogus message name %d "
"received from audio service", inmsg->name);
}
if (inmsg->type == BT_ERROR) {
bt_audio_error_t *err = (void *) inmsg;
status = G_IO_ERROR_INVAL;
GST_ERROR_OBJECT (self, "%s failed : "
"%s(%d)", name, strerror (err->posix_errno), err->posix_errno);
}
GST_DEBUG_OBJECT (self, "received: %s <- %s", type, name);
return status;
}
static GIOError
gst_avdtp_sink_audioservice_expect (GstAvdtpSink * self,
bt_audio_msg_header_t * outmsg, guint8 expected_name)
{
GIOError status;
status = gst_avdtp_sink_audioservice_recv (self, outmsg);
if (status != G_IO_ERROR_NONE)
return status;
if (outmsg->name != expected_name)
status = G_IO_ERROR_INVAL;
return status;
}
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);
}
gchar *
gst_avdtp_sink_get_device (GstAvdtpSink * self)
{
return g_strdup (self->device);
}
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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