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512 lines
13 KiB
C
512 lines
13 KiB
C
/*
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*
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* BlueZ - Bluetooth protocol stack for Linux
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*
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* Copyright (C) 2004-2010 Marcel Holtmann <marcel@holtmann.org>
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*
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#define GLIB_DISABLE_DEPRECATION_WARNINGS
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/* FIXME: check which includes are really required */
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#include <unistd.h>
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#include <sys/un.h>
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#include <sys/socket.h>
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#include <fcntl.h>
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#include <netinet/in.h>
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#include "a2dp-codecs.h"
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#include "gstavdtpsink.h"
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#include <gst/rtp/rtp.h>
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GST_DEBUG_CATEGORY_STATIC (avdtp_sink_debug);
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#define GST_CAT_DEFAULT avdtp_sink_debug
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#define CRC_PROTECTED 1
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#define CRC_UNPROTECTED 0
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#define DEFAULT_AUTOCONNECT TRUE
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#define GST_AVDTP_SINK_MUTEX_LOCK(s) G_STMT_START { \
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g_mutex_lock(&s->sink_lock); \
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} G_STMT_END
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#define GST_AVDTP_SINK_MUTEX_UNLOCK(s) G_STMT_START { \
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g_mutex_unlock(&s->sink_lock); \
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} G_STMT_END
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#define IS_SBC(n) (strcmp((n), "audio/x-sbc") == 0)
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#define IS_MPEG_AUDIO(n) (strcmp((n), "audio/mpeg") == 0)
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enum
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{
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PROP_0,
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PROP_DEVICE,
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PROP_AUTOCONNECT,
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PROP_TRANSPORT
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};
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#define parent_class gst_avdtp_sink_parent_class
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G_DEFINE_TYPE (GstAvdtpSink, gst_avdtp_sink, GST_TYPE_BASE_SINK);
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static GstStaticPadTemplate avdtp_sink_factory =
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GST_STATIC_PAD_TEMPLATE ("sink", GST_PAD_SINK, GST_PAD_ALWAYS,
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GST_STATIC_CAPS ("application/x-rtp, "
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"media = (string) \"audio\","
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"payload = (int) "
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GST_RTP_PAYLOAD_DYNAMIC_STRING ", "
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"clock-rate = (int) { 16000, 32000, "
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"44100, 48000 }, "
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"encoding-name = (string) \"SBC\"; "
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"application/x-rtp, "
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"media = (string) \"audio\", "
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"payload = (int) "
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GST_RTP_PAYLOAD_MPA_STRING ", "
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"clock-rate = (int) 90000; "
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"application/x-rtp, "
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"media = (string) \"audio\", "
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"payload = (int) "
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GST_RTP_PAYLOAD_DYNAMIC_STRING ", "
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"clock-rate = (int) 90000, " "encoding-name = (string) \"MPA\""));
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static gboolean
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gst_avdtp_sink_stop (GstBaseSink * basesink)
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{
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GstAvdtpSink *self = GST_AVDTP_SINK (basesink);
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GST_INFO_OBJECT (self, "stop");
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if (self->watch_id != 0) {
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g_source_remove (self->watch_id);
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self->watch_id = 0;
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}
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gst_avdtp_connection_release (&self->conn);
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if (self->stream_caps) {
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gst_caps_unref (self->stream_caps);
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self->stream_caps = NULL;
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}
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if (self->dev_caps) {
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gst_caps_unref (self->dev_caps);
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self->dev_caps = NULL;
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}
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return TRUE;
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}
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static void
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gst_avdtp_sink_finalize (GObject * object)
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{
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GstAvdtpSink *self = GST_AVDTP_SINK (object);
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gst_avdtp_sink_stop (GST_BASE_SINK (self));
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gst_avdtp_connection_reset (&self->conn);
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g_mutex_clear (&self->sink_lock);
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static void
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gst_avdtp_sink_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstAvdtpSink *sink = GST_AVDTP_SINK (object);
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switch (prop_id) {
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case PROP_DEVICE:
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gst_avdtp_connection_set_device (&sink->conn, g_value_get_string (value));
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break;
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case PROP_AUTOCONNECT:
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sink->autoconnect = g_value_get_boolean (value);
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break;
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case PROP_TRANSPORT:
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gst_avdtp_connection_set_transport (&sink->conn,
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g_value_get_string (value));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gst_avdtp_sink_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec)
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{
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GstAvdtpSink *sink = GST_AVDTP_SINK (object);
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switch (prop_id) {
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case PROP_DEVICE:
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g_value_set_string (value, sink->conn.device);
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break;
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case PROP_AUTOCONNECT:
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g_value_set_boolean (value, sink->autoconnect);
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break;
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case PROP_TRANSPORT:
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g_value_set_string (value, sink->conn.transport);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static gint
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gst_avdtp_sink_get_channel_mode (const gchar * mode)
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{
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if (strcmp (mode, "stereo") == 0)
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return SBC_CHANNEL_MODE_STEREO;
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else if (strcmp (mode, "joint-stereo") == 0)
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return SBC_CHANNEL_MODE_JOINT_STEREO;
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else if (strcmp (mode, "dual-channel") == 0)
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return SBC_CHANNEL_MODE_DUAL_CHANNEL;
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else if (strcmp (mode, "mono") == 0)
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return SBC_CHANNEL_MODE_MONO;
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else
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return -1;
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}
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static void
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gst_avdtp_sink_tag (const GstTagList * taglist,
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const gchar * tag, gpointer user_data)
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{
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gboolean crc;
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gchar *channel_mode = NULL;
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GstAvdtpSink *self = GST_AVDTP_SINK (user_data);
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if (strcmp (tag, "has-crc") == 0) {
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if (!gst_tag_list_get_boolean (taglist, tag, &crc)) {
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GST_WARNING_OBJECT (self, "failed to get crc tag");
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return;
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}
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gst_avdtp_sink_set_crc (self, crc);
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} else if (strcmp (tag, "channel-mode") == 0) {
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if (!gst_tag_list_get_string (taglist, tag, &channel_mode)) {
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GST_WARNING_OBJECT (self, "failed to get channel-mode tag");
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return;
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}
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self->channel_mode = gst_avdtp_sink_get_channel_mode (channel_mode);
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if (self->channel_mode == -1)
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GST_WARNING_OBJECT (self, "Received invalid channel "
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"mode: %s", channel_mode);
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g_free (channel_mode);
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} else
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GST_DEBUG_OBJECT (self, "received unused tag: %s", tag);
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}
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static gboolean
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gst_avdtp_sink_event (GstBaseSink * basesink, GstEvent * event)
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{
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GstAvdtpSink *self = GST_AVDTP_SINK (basesink);
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GstTagList *taglist = NULL;
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if (GST_EVENT_TYPE (event) == GST_EVENT_TAG) {
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/* we check the tags, mp3 has tags that are importants and
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* are outside caps */
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gst_event_parse_tag (event, &taglist);
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gst_tag_list_foreach (taglist, gst_avdtp_sink_tag, self);
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}
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return TRUE;
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}
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static gboolean
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gst_avdtp_sink_start (GstBaseSink * basesink)
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{
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GstAvdtpSink *self = GST_AVDTP_SINK (basesink);
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GST_INFO_OBJECT (self, "start");
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self->stream_caps = NULL;
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self->mp3_using_crc = -1;
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self->channel_mode = -1;
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if (self->conn.transport == NULL)
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return FALSE;
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if (!gst_avdtp_connection_acquire (&self->conn, FALSE)) {
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GST_ERROR_OBJECT (self, "Failed to acquire connection");
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return FALSE;
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}
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if (!gst_avdtp_connection_get_properties (&self->conn)) {
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GST_ERROR_OBJECT (self, "Failed to get transport properties");
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return FALSE;
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}
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if (self->dev_caps)
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gst_caps_unref (self->dev_caps);
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self->dev_caps = gst_avdtp_connection_get_caps (&self->conn);
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if (!self->dev_caps) {
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GST_ERROR_OBJECT (self, "Failed to get device caps");
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return FALSE;
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}
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GST_DEBUG_OBJECT (self, "Got connection caps: %" GST_PTR_FORMAT,
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self->dev_caps);
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return TRUE;
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}
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static GstFlowReturn
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gst_avdtp_sink_preroll (GstBaseSink * basesink, GstBuffer * buffer)
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{
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GstAvdtpSink *sink = GST_AVDTP_SINK (basesink);
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gboolean ret;
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GST_AVDTP_SINK_MUTEX_LOCK (sink);
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ret = gst_avdtp_connection_conf_recv_stream_fd (&sink->conn);
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GST_AVDTP_SINK_MUTEX_UNLOCK (sink);
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if (!ret)
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return GST_FLOW_ERROR;
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return GST_FLOW_OK;
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}
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static GstFlowReturn
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gst_avdtp_sink_render (GstBaseSink * basesink, GstBuffer * buffer)
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{
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GstFlowReturn flow_ret = GST_FLOW_OK;
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GstAvdtpSink *self = GST_AVDTP_SINK (basesink);
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GstMapInfo map;
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ssize_t ret;
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int fd;
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if (!gst_buffer_map (buffer, &map, GST_MAP_READ))
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return GST_FLOW_ERROR;
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/* FIXME: temporary sanity check */
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g_assert (!(g_io_channel_get_flags (self->conn.stream) & G_IO_FLAG_NONBLOCK));
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/* FIXME: why not use g_io_channel_write_chars() instead? */
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fd = g_io_channel_unix_get_fd (self->conn.stream);
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ret = write (fd, map.data, map.size);
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if (ret < 0) {
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/* FIXME: since this is probably fatal, shouldn't we post an error here? */
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GST_ERROR_OBJECT (self, "Error writing to socket: %s", g_strerror (errno));
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flow_ret = GST_FLOW_ERROR;
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}
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gst_buffer_unmap (buffer, &map);
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return flow_ret;
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}
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static gboolean
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gst_avdtp_sink_unlock (GstBaseSink * basesink)
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{
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GstAvdtpSink *self = GST_AVDTP_SINK (basesink);
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if (self->conn.stream != NULL)
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g_io_channel_flush (self->conn.stream, NULL);
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return TRUE;
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}
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static void
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gst_avdtp_sink_class_init (GstAvdtpSinkClass * klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
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GstBaseSinkClass *basesink_class = GST_BASE_SINK_CLASS (klass);
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parent_class = g_type_class_peek_parent (klass);
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object_class->finalize = GST_DEBUG_FUNCPTR (gst_avdtp_sink_finalize);
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object_class->set_property = GST_DEBUG_FUNCPTR (gst_avdtp_sink_set_property);
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object_class->get_property = GST_DEBUG_FUNCPTR (gst_avdtp_sink_get_property);
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basesink_class->start = GST_DEBUG_FUNCPTR (gst_avdtp_sink_start);
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basesink_class->stop = GST_DEBUG_FUNCPTR (gst_avdtp_sink_stop);
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basesink_class->render = GST_DEBUG_FUNCPTR (gst_avdtp_sink_render);
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basesink_class->preroll = GST_DEBUG_FUNCPTR (gst_avdtp_sink_preroll);
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basesink_class->unlock = GST_DEBUG_FUNCPTR (gst_avdtp_sink_unlock);
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basesink_class->event = GST_DEBUG_FUNCPTR (gst_avdtp_sink_event);
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g_object_class_install_property (object_class, PROP_DEVICE,
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g_param_spec_string ("device", "Device",
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"Bluetooth remote device address", NULL, G_PARAM_READWRITE));
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g_object_class_install_property (object_class, PROP_AUTOCONNECT,
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g_param_spec_boolean ("auto-connect",
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"Auto-connect",
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"Automatically attempt to connect "
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"to device", DEFAULT_AUTOCONNECT, G_PARAM_READWRITE));
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g_object_class_install_property (object_class, PROP_TRANSPORT,
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g_param_spec_string ("transport",
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"Transport", "Use configured transport", NULL, G_PARAM_READWRITE));
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GST_DEBUG_CATEGORY_INIT (avdtp_sink_debug, "avdtpsink", 0,
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"A2DP headset sink element");
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gst_element_class_add_static_pad_template (element_class,
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&avdtp_sink_factory);
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gst_element_class_set_static_metadata (element_class, "Bluetooth AVDTP sink",
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"Sink/Audio", "Plays audio to an A2DP device",
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"Marcel Holtmann <marcel@holtmann.org>");
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}
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static void
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gst_avdtp_sink_init (GstAvdtpSink * self)
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{
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self->conn.device = NULL;
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self->conn.transport = NULL;
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self->conn.stream = NULL;
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self->dev_caps = NULL;
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self->autoconnect = DEFAULT_AUTOCONNECT;
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g_mutex_init (&self->sink_lock);
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/* FIXME this is for not synchronizing with clock, should be tested
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* with devices to see the behaviour
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gst_base_sink_set_sync(GST_BASE_SINK(self), FALSE);
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*/
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}
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gboolean
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gst_avdtp_sink_plugin_init (GstPlugin * plugin)
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{
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return gst_element_register (plugin, "avdtpsink", GST_RANK_NONE,
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GST_TYPE_AVDTP_SINK);
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}
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/* public functions */
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GstCaps *
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gst_avdtp_sink_get_device_caps (GstAvdtpSink * sink)
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{
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if (sink->dev_caps == NULL)
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return NULL;
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return gst_caps_copy (sink->dev_caps);
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}
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gboolean
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gst_avdtp_sink_set_device_caps (GstAvdtpSink * self, GstCaps * caps)
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{
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GST_DEBUG_OBJECT (self, "setting device caps");
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GST_AVDTP_SINK_MUTEX_LOCK (self);
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if (self->stream_caps)
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gst_caps_unref (self->stream_caps);
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self->stream_caps = gst_caps_ref (caps);
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GST_AVDTP_SINK_MUTEX_UNLOCK (self);
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return TRUE;
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}
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guint
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gst_avdtp_sink_get_link_mtu (GstAvdtpSink * sink)
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{
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return sink->conn.data.link_mtu;
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}
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void
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gst_avdtp_sink_set_device (GstAvdtpSink * self, const gchar * dev)
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{
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g_free (self->conn.device);
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GST_LOG_OBJECT (self, "Setting device: %s", dev);
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self->conn.device = g_strdup (dev);
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}
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void
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gst_avdtp_sink_set_transport (GstAvdtpSink * self, const gchar * trans)
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{
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g_free (self->conn.transport);
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GST_LOG_OBJECT (self, "Setting transport: %s", trans);
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self->conn.transport = g_strdup (trans);
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}
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gchar *
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gst_avdtp_sink_get_device (GstAvdtpSink * self)
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{
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return g_strdup (self->conn.device);
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}
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gchar *
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gst_avdtp_sink_get_transport (GstAvdtpSink * self)
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{
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return g_strdup (self->conn.transport);
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}
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void
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gst_avdtp_sink_set_crc (GstAvdtpSink * self, gboolean crc)
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{
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gint new_crc;
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new_crc = crc ? CRC_PROTECTED : CRC_UNPROTECTED;
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/* test if we already received a different crc */
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if (self->mp3_using_crc != -1 && new_crc != self->mp3_using_crc) {
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GST_WARNING_OBJECT (self, "crc changed during stream");
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return;
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}
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self->mp3_using_crc = new_crc;
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}
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void
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gst_avdtp_sink_set_channel_mode (GstAvdtpSink * self, const gchar * mode)
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{
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gint new_mode;
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|
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new_mode = gst_avdtp_sink_get_channel_mode (mode);
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if (self->channel_mode != -1 && new_mode != self->channel_mode) {
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GST_WARNING_OBJECT (self, "channel mode changed during stream");
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return;
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}
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self->channel_mode = new_mode;
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if (self->channel_mode == -1)
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GST_WARNING_OBJECT (self, "Received invalid channel mode: %s", mode);
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}
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