Re: [PATCH BlueZ 2/5] AVRCP: move MediaPlayer to adapter object

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* Luiz Augusto von Dentz <luiz.dentz@xxxxxxxxx> [2011-10-04 01:01:15 +0300]:

> From: Luiz Augusto von Dentz <luiz.von.dentz@xxxxxxxxx>
> 
> This move the MediaPlayer registration to adapter object on Media
> interface so we can track players properly.
> ---
>  audio/avrcp.c     |  832 +++++++++++------------------------------------------
>  audio/avrcp.h     |   67 ++++-
>  audio/device.c    |    3 -
>  audio/device.h    |    2 -
>  audio/manager.c   |    7 -
>  audio/media.c     |  776 +++++++++++++++++++++++++++++++++++++++++++++++++
>  doc/media-api.txt |  163 +++++++++++
>  7 files changed, 1167 insertions(+), 683 deletions(-)
> 
> diff --git a/audio/avrcp.c b/audio/avrcp.c
> index 6e8b8ff..cfdb313 100644
> --- a/audio/avrcp.c
> +++ b/audio/avrcp.c
> @@ -78,54 +78,10 @@
>  #define AVRCP_GET_PLAY_STATUS		0x30
>  #define AVRCP_REGISTER_NOTIFICATION	0x31
>  
> -/* Notification events */
> -#define AVRCP_EVENT_PLAYBACK_STATUS_CHANGED		0x01
> -#define AVRCP_EVENT_TRACK_CHANGED			0x02
> -
>  /* Capabilities for AVRCP_GET_CAPABILITIES pdu */
>  #define CAP_COMPANY_ID		0x02
>  #define CAP_EVENTS_SUPPORTED	0x03
>  
> -enum player_setting {
> -	PLAYER_SETTING_EQUALIZER =	1,
> -	PLAYER_SETTING_REPEAT =		2,
> -	PLAYER_SETTING_SHUFFLE =	3,
> -	PLAYER_SETTING_SCAN =		4,
> -};
> -
> -enum equalizer_mode {
> -	EQUALIZER_MODE_OFF =	1,
> -	EQUALIZER_MODE_ON =	2,
> -};
> -
> -enum repeat_mode {
> -	REPEAT_MODE_OFF =	1,
> -	REPEAT_MODE_SINGLE =	2,
> -	REPEAT_MODE_ALL =	3,
> -	REPEAT_MODE_GROUP =	4,
> -};
> -
> -enum shuffle_mode {
> -	SHUFFLE_MODE_OFF =	1,
> -	SHUFFLE_MODE_ALL =	2,
> -	SHUFFLE_MODE_GROUP =	3,
> -};
> -
> -enum scan_mode {
> -	SCAN_MODE_OFF =		1,
> -	SCAN_MODE_ALL =		2,
> -	SCAN_MODE_GROUP =	3,
> -};
> -
> -enum play_status {
> -	PLAY_STATUS_STOPPED =		0x00,
> -	PLAY_STATUS_PLAYING =		0x01,
> -	PLAY_STATUS_PAUSED =		0x02,
> -	PLAY_STATUS_FWD_SEEK =		0x03,
> -	PLAY_STATUS_REV_SEEK =		0x04,
> -	PLAY_STATUS_ERROR =		0xFF
> -};
> -
>  enum battery_status {
>  	BATTERY_STATUS_NORMAL =		0,
>  	BATTERY_STATUS_WARNING =	1,
> @@ -134,17 +90,6 @@ enum battery_status {
>  	BATTERY_STATUS_FULL_CHARGE =	4,
>  };
>  
> -enum media_info_id {
> -	MEDIA_INFO_TITLE =		1,
> -	MEDIA_INFO_ARTIST =		2,
> -	MEDIA_INFO_ALBUM =		3,
> -	MEDIA_INFO_TRACK =		4,
> -	MEDIA_INFO_N_TRACKS =		5,
> -	MEDIA_INFO_GENRE =		6,
> -	MEDIA_INFO_PLAYING_TIME =	7,
> -	MEDIA_INFO_LAST
> -};
> -
>  #if __BYTE_ORDER == __LITTLE_ENDIAN
>  
>  struct avrcp_header {
> @@ -180,33 +125,26 @@ struct avrcp_server {
>  	bdaddr_t src;
>  	uint32_t tg_record_id;
>  	uint32_t ct_record_id;
> +	GSList *players;
> +	struct avrcp_player *active_player;
>  };
>  
> -struct media_info {
> -	char *title;
> -	char *artist;
> -	char *album;
> -	char *genre;
> -	uint32_t ntracks;
> -	uint32_t track;
> -	uint32_t track_len;
> -	uint32_t elapsed;
> -};
> -
> -struct media_player {
> +struct avrcp_player {
> +	struct avrcp_server *server;
>  	struct avctp *session;
>  	struct audio_device *dev;
> -	uint8_t settings[PLAYER_SETTING_SCAN + 1];
> -	enum play_status status;
>  
> -	struct media_info mi;
> -	GTimer *timer;
>  	unsigned int handler;
>  	uint16_t registered_events;
>  	uint8_t transaction_events[AVRCP_EVENT_TRACK_CHANGED + 1];
> +
> +	struct avrcp_player_cb *cb;
> +	void *user_data;
> +	GDestroyNotify destroy;
>  };
>  
>  static GSList *servers = NULL;
> +static unsigned int avctp_id = 0;
>  
>  /* Company IDs supported by this device */
>  static uint32_t company_ids[] = {
> @@ -344,164 +282,19 @@ static sdp_record_t *avrcp_tg_record(void)
>  static unsigned int attr_get_max_val(uint8_t attr)
>  {
>  	switch (attr) {
> -	case PLAYER_SETTING_EQUALIZER:
> -		return EQUALIZER_MODE_ON;
> -	case PLAYER_SETTING_REPEAT:
> -		return REPEAT_MODE_GROUP;
> -	case PLAYER_SETTING_SHUFFLE:
> -		return SHUFFLE_MODE_GROUP;
> -	case PLAYER_SETTING_SCAN:
> -		return SCAN_MODE_GROUP;
> +	case AVRCP_ATTRIBUTE_EQUALIZER:
> +		return AVRCP_EQUALIZER_ON;
> +	case AVRCP_ATTRIBUTE_REPEAT_MODE:
> +		return AVRCP_REPEAT_MODE_GROUP;
> +	case AVRCP_ATTRIBUTE_SHUFFLE:
> +		return AVRCP_SHUFFLE_GROUP;
> +	case AVRCP_ATTRIBUTE_SCAN:
> +		return AVRCP_SCAN_GROUP;
>  	}
>  
>  	return 0;
>  }
>  
> -static const char *attrval_to_str(uint8_t attr, uint8_t value)
> -{
> -	switch (attr) {
> -	case PLAYER_SETTING_EQUALIZER:
> -		switch (value) {
> -		case EQUALIZER_MODE_ON:
> -			return "on";
> -		case EQUALIZER_MODE_OFF:
> -			return "off";
> -		}
> -
> -		break;
> -	case PLAYER_SETTING_REPEAT:
> -		switch (value) {
> -		case REPEAT_MODE_OFF:
> -			return "off";
> -		case REPEAT_MODE_SINGLE:
> -			return "singletrack";
> -		case REPEAT_MODE_ALL:
> -			return "alltracks";
> -		case REPEAT_MODE_GROUP:
> -			return "group";
> -		}
> -
> -		break;
> -	/* Shuffle and scan have the same values */
> -	case PLAYER_SETTING_SHUFFLE:
> -	case PLAYER_SETTING_SCAN:
> -		switch (value) {
> -		case SCAN_MODE_OFF:
> -			return "off";
> -		case SCAN_MODE_ALL:
> -			return "alltracks";
> -		case SCAN_MODE_GROUP:
> -			return "group";
> -		}
> -
> -		break;
> -	}
> -
> -	return NULL;
> -}
> -
> -static int attrval_to_val(uint8_t attr, const char *value)
> -{
> -	int ret;
> -
> -	switch (attr) {
> -	case PLAYER_SETTING_EQUALIZER:
> -		if (!strcmp(value, "off"))
> -			ret = EQUALIZER_MODE_OFF;
> -		else if (!strcmp(value, "on"))
> -			ret = EQUALIZER_MODE_ON;
> -		else
> -			ret = -EINVAL;
> -
> -		return ret;
> -	case PLAYER_SETTING_REPEAT:
> -		if (!strcmp(value, "off"))
> -			ret = REPEAT_MODE_OFF;
> -		else if (!strcmp(value, "singletrack"))
> -			ret = REPEAT_MODE_SINGLE;
> -		else if (!strcmp(value, "alltracks"))
> -			ret = REPEAT_MODE_ALL;
> -		else if (!strcmp(value, "group"))
> -			ret = REPEAT_MODE_GROUP;
> -		else
> -			ret = -EINVAL;
> -
> -		return ret;
> -	case PLAYER_SETTING_SHUFFLE:
> -		if (!strcmp(value, "off"))
> -			ret = SHUFFLE_MODE_OFF;
> -		else if (!strcmp(value, "alltracks"))
> -			ret = SHUFFLE_MODE_ALL;
> -		else if (!strcmp(value, "group"))
> -			ret = SHUFFLE_MODE_GROUP;
> -		else
> -			ret = -EINVAL;
> -
> -		return ret;
> -	case PLAYER_SETTING_SCAN:
> -		if (!strcmp(value, "off"))
> -			ret = SCAN_MODE_OFF;
> -		else if (!strcmp(value, "alltracks"))
> -			ret = SCAN_MODE_ALL;
> -		else if (!strcmp(value, "group"))
> -			ret = SCAN_MODE_GROUP;
> -		else
> -			ret = -EINVAL;
> -
> -		return ret;
> -	}
> -
> -	return -EINVAL;
> -}
> -
> -static const char *attr_to_str(uint8_t attr)
> -{
> -	switch (attr) {
> -	case PLAYER_SETTING_EQUALIZER:
> -		return "Equalizer";
> -	case PLAYER_SETTING_REPEAT:
> -		return "Repeat";
> -	case PLAYER_SETTING_SHUFFLE:
> -		return "Shuffle";
> -	case PLAYER_SETTING_SCAN:
> -		return "Scan";
> -	}
> -
> -	return NULL;
> -}
> -
> -static int attr_to_val(const char *str)
> -{
> -	if (!strcmp(str, "Equalizer"))
> -		return PLAYER_SETTING_EQUALIZER;
> -	else if (!strcmp(str, "Repeat"))
> -		return PLAYER_SETTING_REPEAT;
> -	else if (!strcmp(str, "Shuffle"))
> -		return PLAYER_SETTING_SHUFFLE;
> -	else if (!strcmp(str, "Scan"))
> -		return PLAYER_SETTING_SCAN;
> -
> -	return -EINVAL;
> -}
> -
> -static int play_status_to_val(const char *status)
> -{
> -	if (!strcmp(status, "stopped"))
> -		return PLAY_STATUS_STOPPED;
> -	else if (!strcmp(status, "playing"))
> -		return PLAY_STATUS_PLAYING;
> -	else if (!strcmp(status, "paused"))
> -		return PLAY_STATUS_PAUSED;
> -	else if (!strcmp(status, "forward-seek"))
> -		return PLAY_STATUS_FWD_SEEK;
> -	else if (!strcmp(status, "reverse-seek"))
> -		return PLAY_STATUS_REV_SEEK;
> -	else if (!strcmp(status, "error"))
> -		return PLAY_STATUS_ERROR;
> -
> -	return -EINVAL;
> -}
> -
>  static const char *battery_status_to_str(enum battery_status status)
>  {
>  	switch (status) {
> @@ -542,17 +335,17 @@ static void set_company_id(uint8_t cid[3], const uint32_t cid_in)
>  	cid[2] = cid_in;
>  }
>  
> -static int avrcp_send_event(struct media_player *mp, uint8_t id, void *data)
> +int avrcp_player_event(struct avrcp_player *player, uint8_t id, void *data)
>  {
>  	uint8_t buf[AVRCP_HEADER_LENGTH + 9];
>  	struct avrcp_header *pdu = (void *) buf;
>  	uint16_t size;
>  	int err;
>  
> -	if (mp->session == NULL)
> +	if (player->session == NULL)
>  		return -ENOTCONN;
>  
> -	if (!(mp->registered_events & (1 << id)))
> +	if (!(player->registered_events & (1 << id)))
>  		return 0;
>  
>  	memset(buf, 0, sizeof(buf));
> @@ -565,7 +358,7 @@ static int avrcp_send_event(struct media_player *mp, uint8_t id, void *data)
>  	DBG("id=%u", id);
>  
>  	switch (id) {
> -	case AVRCP_EVENT_PLAYBACK_STATUS_CHANGED:
> +	case AVRCP_EVENT_STATUS_CHANGED:
>  		size = 2;
>  		pdu->params[1] = *((uint8_t *)data);
>  
> @@ -589,58 +382,18 @@ static int avrcp_send_event(struct media_player *mp, uint8_t id, void *data)
>  
>  	pdu->params_len = htons(size);
>  
> -	err = avctp_send_vendordep(mp->session, mp->transaction_events[id],
> +	err = avctp_send_vendordep(player->session, player->transaction_events[id],
>  					AVC_CTYPE_CHANGED, AVC_SUBUNIT_PANEL,
>  					buf, size + AVRCP_HEADER_LENGTH);
>  	if (err < 0)
>  		return err;
>  
>  	/* Unregister event as per AVRCP 1.3 spec, section 5.4.2 */
> -	mp->registered_events ^= 1 << id;
> +	player->registered_events ^= 1 << id;
>  
>  	return 0;
>  }
>  
> -static void mp_get_playback_status(struct media_player *mp, uint8_t *status,
> -					uint32_t *elapsed, uint32_t *track_len)
> -{
> -	if (status)
> -		*status = mp->status;
> -	if (track_len)
> -		*track_len = mp->mi.track_len;
> -
> -	if (!elapsed)
> -		return;
> -
> -	*elapsed = mp->mi.elapsed;
> -
> -	if (mp->status == PLAY_STATUS_PLAYING) {
> -		double timedelta = g_timer_elapsed(mp->timer, NULL);
> -		uint32_t sec, msec;
> -
> -		sec = (uint32_t) timedelta;
> -		msec = (uint32_t)((timedelta - sec) * 1000);
> -
> -		*elapsed += sec * 1000 + msec;
> -	}
> -}
> -
> -static void mp_set_playback_status(struct media_player *mp, uint8_t status,
> -							uint32_t elapsed)
> -{
> -	DBG("Change playback: %u %u", status, elapsed);
> -
> -	mp->mi.elapsed = elapsed;
> -	g_timer_start(mp->timer);
> -
> -	if (status == mp->status)
> -		return;
> -
> -	mp->status = status;
> -
> -	avrcp_send_event(mp, AVRCP_EVENT_PLAYBACK_STATUS_CHANGED, &status);
> -}
> -
>  /*
>   * Copy media_info field to a buffer, intended to be used in a response to
>   * GetElementAttributes message.
> @@ -648,10 +401,10 @@ static void mp_set_playback_status(struct media_player *mp, uint8_t status,
>   * It assumes there's enough space in the buffer and on success it returns the
>   * size written.
>   *
> - * If @param id is not valid, -EINVAL is returned. If there's no such media
> - * attribute, -ENOENT is returned.
> + * If @param id is not valid, -EINVAL is returned. If there's no space left on
> + * the buffer -ENOBUFS is returned.
>   */
> -static int mp_get_media_attribute(struct media_player *mp,
> +static int player_get_media_attribute(struct avrcp_player *player,
>  						uint32_t id, uint8_t *buf,
>  						uint16_t maxlen)
>  {
> @@ -661,11 +414,10 @@ static int mp_get_media_attribute(struct media_player *mp,
>  		uint16_t len;
>  		uint8_t val[];
>  	};
> -	const struct media_info *mi = &mp->mi;
>  	struct media_info_elem *elem = (void *)buf;
>  	uint16_t len;
>  	char valstr[20];
> -	char *valp;
> +	void *value;
>  
>  	if (maxlen < sizeof(struct media_info_elem))
>  		return -ENOBUFS;
> @@ -673,61 +425,38 @@ static int mp_get_media_attribute(struct media_player *mp,
>  	/* Subtract the size of elem header from the available space */
>  	maxlen -= sizeof(struct media_info_elem);
>  
> -	switch (id) {
> -	case MEDIA_INFO_TITLE:
> -		valp = mi->title;
> -		break;
> -	case MEDIA_INFO_ARTIST:
> -		valp = mi->artist;
> -		break;
> -	case MEDIA_INFO_ALBUM:
> -		valp = mi->album;
> -		break;
> -	case MEDIA_INFO_GENRE:
> -		valp = mi->genre;
> -		break;
> -	case MEDIA_INFO_TRACK:
> -		if (mi->track) {
> -			snprintf(valstr, 20, "%u", mi->track);
> -			valp = valstr;
> -		} else {
> -			valp = NULL;
> -		}
> +	DBG("Get media attribute: %u", id);
>  
> -		break;
> -	case MEDIA_INFO_N_TRACKS:
> -		if (mi->ntracks) {
> -			snprintf(valstr, 20, "%u", mi->ntracks);
> -			valp = valstr;
> -		} else {
> -			valp = NULL;
> -		}
> +	value = player->cb->get_metadata(id, player->user_data);
> +	if (value == NULL) {
> +		len = 0;
> +		goto done;
> +	}
>  
> +	switch (id) {
> +	case AVRCP_MEDIA_ATTRIBUTE_TITLE:
> +	case AVRCP_MEDIA_ATTRIBUTE_ARTIST:
> +	case AVRCP_MEDIA_ATTRIBUTE_ALBUM:
> +	case AVRCP_MEDIA_ATTRIBUTE_GENRE:
> +		len = strlen((char *) value);
> +		if (len > maxlen)
> +			return -ENOBUFS;
> +		memcpy(elem->val, value, len);
>  		break;
> -	case MEDIA_INFO_PLAYING_TIME:
> -		if (mi->track_len == 0xFFFFFFFF) {
> -			snprintf(valstr, 20, "%u", mi->track_len);
> -			valp = valstr;
> -		} else {
> -			valp = NULL;
> -		}
> -
> +	case AVRCP_MEDIA_ATTRIBUTE_TRACK:
> +	case AVRCP_MEDIA_ATTRIBUTE_N_TRACKS:
> +	case AVRCP_MEDIA_ATTRIBUTE_DURATION:
> +		snprintf(valstr, 20, "%u", GPOINTER_TO_UINT(value));
> +		len = strlen(valstr);
> +		if (len > maxlen)
> +			return -ENOBUFS;
> +		memcpy(elem->val, valstr, len);
>  		break;
>  	default:
>  		return -ENOENT;
>  	}
>  
> -	if (valp) {
> -		len = strlen(valp);
> -
> -		if (len > maxlen)
> -			return -ENOBUFS;
> -
> -		memcpy(elem->val, valp, len);
> -	} else {
> -		len = 0;
> -	}
> -
> +done:
>  	elem->id = htonl(id);
>  	elem->charset = htons(0x6A); /* Always use UTF-8 */
>  	elem->len = htons(len);
> @@ -735,57 +464,22 @@ static int mp_get_media_attribute(struct media_player *mp,
>  	return sizeof(struct media_info_elem) + len;
>  }
>  
> -static void mp_set_attribute(struct media_player *mp,
> +static int player_set_attribute(struct avrcp_player *player,
>  						uint8_t attr, uint8_t val)
>  {
>  	DBG("Change attribute: %u %u", attr, val);
>  
> -	mp->settings[attr] = val;
> +	return player->cb->set_setting(attr, val, player->user_data);
>  }
>  
> -static int mp_get_attribute(struct media_player *mp, uint8_t attr)
> +static int player_get_attribute(struct avrcp_player *player, uint8_t attr)
>  {
>  	DBG("Get attribute: %u", attr);
>  
> -	return mp->settings[attr];
> -}
> -
> -static void mp_set_media_attributes(struct media_player *mp,
> -							struct media_info *mi)
> -{
> -	g_free(mp->mi.title);
> -	mp->mi.title = g_strdup(mi->title);
> -
> -	g_free(mp->mi.artist);
> -	mp->mi.artist = g_strdup(mi->artist);
> -
> -	g_free(mp->mi.album);
> -	mp->mi.album = g_strdup(mi->album);
> -
> -	g_free(mp->mi.genre);
> -	mp->mi.genre = g_strdup(mi->genre);
> -
> -	mp->mi.ntracks = mi->ntracks;
> -	mp->mi.track = mi->track;
> -	mp->mi.track_len = mi->track_len;
> -
> -	/*
> -	 * elapsed is special. Whenever the track changes, we reset it to 0,
> -	 * so client doesn't have to make another call to change_playback
> -	 */
> -	mp->mi.elapsed = 0;
> -	g_timer_start(mp->timer);
> -
> -	DBG("Track changed:\n\ttitle: %s\n\tartist: %s\n\talbum: %s\n"
> -			"\tgenre: %s\n\tNumber of tracks: %u\n"
> -			"\tTrack number: %u\n\tTrack duration: %u",
> -			mi->title, mi->artist, mi->album, mi->genre,
> -			mi->ntracks, mi->track, mi->track_len);
> -
> -	avrcp_send_event(mp, AVRCP_EVENT_TRACK_CHANGED, NULL);
> +	return player->cb->get_setting(attr, player->user_data);
>  }
>  
> -static uint8_t avrcp_handle_get_capabilities(struct media_player *mp,
> +static uint8_t avrcp_handle_get_capabilities(struct avrcp_player *player,
>  						struct avrcp_header *pdu,
>  						uint8_t transaction)
>  {
> @@ -811,7 +505,7 @@ static uint8_t avrcp_handle_get_capabilities(struct media_player *mp,
>  	case CAP_EVENTS_SUPPORTED:
>  		pdu->params_len = htons(4);
>  		pdu->params[1] = 2;
> -		pdu->params[2] = AVRCP_EVENT_PLAYBACK_STATUS_CHANGED;
> +		pdu->params[2] = AVRCP_EVENT_STATUS_CHANGED;
>  		pdu->params[3] = AVRCP_EVENT_TRACK_CHANGED;
>  
>  		return AVC_CTYPE_STABLE;
> @@ -824,7 +518,7 @@ err:
>  	return AVC_CTYPE_REJECTED;
>  }
>  
> -static uint8_t avrcp_handle_list_player_attributes(struct media_player *mp,
> +static uint8_t avrcp_handle_list_player_attributes(struct avrcp_player *player,
>  						struct avrcp_header *pdu,
>  						uint8_t transaction)
>  {
> @@ -837,11 +531,11 @@ static uint8_t avrcp_handle_list_player_attributes(struct media_player *mp,
>  		return AVC_CTYPE_REJECTED;
>  	}
>  
> -	if (!mp)
> +	if (!player)
>  		goto done;
>  
> -	for (i = 1; i <= PLAYER_SETTING_SCAN; i++) {
> -		if (!mp_get_attribute(mp, i)) {
> +	for (i = 1; i <= AVRCP_ATTRIBUTE_SCAN; i++) {
> +		if (!player_get_attribute(player, i)) {
>  			DBG("Ignoring setting %u: not supported by player", i);
>  			continue;
>  		}
> @@ -857,14 +551,14 @@ done:
>  	return AVC_CTYPE_STABLE;
>  }
>  
> -static uint8_t avrcp_handle_list_player_values(struct media_player *mp,
> +static uint8_t avrcp_handle_list_player_values(struct avrcp_player *player,
>  						struct avrcp_header *pdu,
>  						uint8_t transaction)
>  {
>  	uint16_t len = ntohs(pdu->params_len);
>  	unsigned int i;
>  
> -	if (len != 1 || !mp)
> +	if (len != 1 || !player)
>  		goto err;
>  
>  	len = attr_get_max_val(pdu->params[0]);
> @@ -887,7 +581,7 @@ err:
>  	return AVC_CTYPE_REJECTED;
>  }
>  
> -static uint8_t avrcp_handle_get_element_attributes(struct media_player *mp,
> +static uint8_t avrcp_handle_get_element_attributes(struct avrcp_player *player,
>  						struct avrcp_header *pdu,
>  						uint8_t transaction)
>  {
> @@ -910,8 +604,9 @@ static uint8_t avrcp_handle_get_element_attributes(struct media_player *mp,
>  		 * Return all available information, at least
>  		 * title must be returned.
>  		 */
> -		for (i = 1; i < MEDIA_INFO_LAST; i++) {
> -			size = mp_get_media_attribute(mp, i, &pdu->params[pos],
> +		for (i = 1; i < AVRCP_MEDIA_ATTRIBUTE_LAST; i++) {
> +			size = player_get_media_attribute(player, i,
> +							&pdu->params[pos],
>  							AVRCP_PDU_MTU - pos);
>  
>  			if (size > 0) {
> @@ -927,7 +622,7 @@ static uint8_t avrcp_handle_get_element_attributes(struct media_player *mp,
>  		for (i = 0; i < nattr; i++) {
>  			uint32_t attr = ntohl(attr_ids[i]);
>  
> -			size = mp_get_media_attribute(mp, attr,
> +			size = player_get_media_attribute(player, attr,
>  							&pdu->params[pos],
>  							AVRCP_PDU_MTU - pos);
>  
> @@ -953,7 +648,7 @@ err:
>  	return AVC_CTYPE_REJECTED;
>  }
>  
> -static uint8_t avrcp_handle_get_current_player_value(struct media_player *mp,
> +static uint8_t avrcp_handle_get_current_player_value(struct avrcp_player *player,
>  						struct avrcp_header *pdu,
>  						uint8_t transaction)
>  {
> @@ -961,7 +656,7 @@ static uint8_t avrcp_handle_get_current_player_value(struct media_player *mp,
>  	uint8_t *settings;
>  	unsigned int i;
>  
> -	if (mp == NULL || len <= 1 || pdu->params[0] != len - 1)
> +	if (player == NULL || len <= 1 || pdu->params[0] != len - 1)
>  		goto err;
>  
>  	/*
> @@ -979,13 +674,13 @@ static uint8_t avrcp_handle_get_current_player_value(struct media_player *mp,
>  	for (i = 0; i < pdu->params[0]; i++) {
>  		uint8_t val;
>  
> -		if (settings[i] < PLAYER_SETTING_EQUALIZER ||
> -					settings[i] > PLAYER_SETTING_SCAN) {
> +		if (settings[i] < AVRCP_ATTRIBUTE_EQUALIZER ||
> +					settings[i] > AVRCP_ATTRIBUTE_SCAN) {
>  			DBG("Ignoring %u", settings[i]);
>  			continue;
>  		}
>  
> -		val = mp_get_attribute(mp, settings[i]);
> +		val = player_get_attribute(player, settings[i]);
>  		if (!val) {
>  			DBG("Ignoring %u: not supported by player",
>  								settings[i]);
> @@ -1014,7 +709,7 @@ err:
>  	return AVC_CTYPE_REJECTED;
>  }
>  
> -static uint8_t avrcp_handle_set_player_value(struct media_player *mp,
> +static uint8_t avrcp_handle_set_player_value(struct avrcp_player *player,
>  						struct avrcp_header *pdu,
>  						uint8_t transaction)
>  {
> @@ -1036,23 +731,11 @@ static uint8_t avrcp_handle_set_player_value(struct media_player *mp,
>  	for (i = 1; i < pdu->params[0]; i += 2) {
>  		uint8_t attr = pdu->params[i];
>  		uint8_t val = pdu->params[i + 1];
> -		const char *attrstr;
> -		const char *valstr;
> -
> -		attrstr = attr_to_str(attr);
> -		if (!attrstr)
> -			continue;
>  
> -		valstr = attrval_to_str(attr, val);
> -		if (!valstr)
> +		if (player_set_attribute(player, attr, val) < 0)
>  			continue;
>  
>  		len++;
> -
> -		mp_set_attribute(mp, attr, val);
> -		emit_property_changed(mp->dev->conn, mp->dev->path,
> -					MEDIA_PLAYER_INTERFACE, attrstr,
> -					DBUS_TYPE_STRING, &valstr);
>  	}
>  
>  	if (len) {
> @@ -1067,7 +750,7 @@ err:
>  	return AVC_CTYPE_REJECTED;
>  }
>  
> -static uint8_t avrcp_handle_displayable_charset(struct media_player *mp,
> +static uint8_t avrcp_handle_displayable_charset(struct avrcp_player *player,
>  						struct avrcp_header *pdu,
>  						uint8_t transaction)
>  {
> @@ -1087,7 +770,7 @@ static uint8_t avrcp_handle_displayable_charset(struct media_player *mp,
>  	return AVC_CTYPE_STABLE;
>  }
>  
> -static uint8_t avrcp_handle_ct_battery_status(struct media_player *mp,
> +static uint8_t avrcp_handle_ct_battery_status(struct avrcp_player *player,
>  						struct avrcp_header *pdu,
>  						uint8_t transaction)
>  {
> @@ -1101,9 +784,6 @@ static uint8_t avrcp_handle_ct_battery_status(struct media_player *mp,
>  	if (valstr == NULL)
>  		goto err;
>  
> -	emit_property_changed(mp->dev->conn, mp->dev->path,
> -					MEDIA_PLAYER_INTERFACE, "Battery",
> -					DBUS_TYPE_STRING, &valstr);
>  	pdu->params_len = 0;
>  
>  	return AVC_CTYPE_STABLE;
> @@ -1114,14 +794,13 @@ err:
>  	return AVC_CTYPE_REJECTED;
>  }
>  
> -static uint8_t avrcp_handle_get_play_status(struct media_player *mp,
> +static uint8_t avrcp_handle_get_play_status(struct avrcp_player *player,
>  						struct avrcp_header *pdu,
>  						uint8_t transaction)
>  {
>  	uint16_t len = ntohs(pdu->params_len);
> -	uint32_t elapsed;
> -	uint32_t track_len;
> -	uint8_t status;
> +	uint32_t position;
> +	uint32_t duration;
>  
>  	if (len != 0) {
>  		pdu->params_len = htons(1);
> @@ -1129,25 +808,28 @@ static uint8_t avrcp_handle_get_play_status(struct media_player *mp,
>  		return AVC_CTYPE_REJECTED;
>  	}
>  
> -	mp_get_playback_status(mp, &status, &elapsed, &track_len);
> -	track_len = htonl(track_len);
> -	elapsed = htonl(elapsed);
> +	position = player->cb->get_position(player->user_data);
> +	duration = GPOINTER_TO_UINT(player->cb->get_metadata(
> +						AVRCP_MEDIA_ATTRIBUTE_DURATION,
> +						player->user_data));
> +
> +	duration = htonl(duration);
> +	position = htonl(position);
>  
> -	memcpy(&pdu->params[0], &track_len, 4);
> -	memcpy(&pdu->params[4], &elapsed, 4);
> -	pdu->params[8] = status;
> +	memcpy(&pdu->params[0], &duration, 4);
> +	memcpy(&pdu->params[4], &position, 4);
> +	pdu->params[8] = player->cb->get_status(player->user_data);;
>  
>  	pdu->params_len = htons(9);
>  
>  	return AVC_CTYPE_STABLE;
>  }
>  
> -static uint8_t avrcp_handle_register_notification(struct media_player *mp,
> +static uint8_t avrcp_handle_register_notification(struct avrcp_player *player,
>  						struct avrcp_header *pdu,
>  						uint8_t transaction)
>  {
>  	uint16_t len = ntohs(pdu->params_len);
> -	uint8_t status;
>  
>  	/*
>  	 * 1 byte for EventID, 4 bytes for Playback interval but the latest
> @@ -1158,10 +840,9 @@ static uint8_t avrcp_handle_register_notification(struct media_player *mp,
>  		goto err;
>  
>  	switch (pdu->params[0]) {
> -	case AVRCP_EVENT_PLAYBACK_STATUS_CHANGED:
> +	case AVRCP_EVENT_STATUS_CHANGED:
>  		len = 2;
> -		mp_get_playback_status(mp, &status, NULL, NULL);
> -		pdu->params[1] = status;
> +		pdu->params[1] = player->cb->get_status(player->user_data);
>  
>  		break;
>  	case AVRCP_EVENT_TRACK_CHANGED:
> @@ -1176,8 +857,8 @@ static uint8_t avrcp_handle_register_notification(struct media_player *mp,
>  	}
>  
>  	/* Register event and save the transaction used */
> -	mp->registered_events |= (1 << pdu->params[0]);
> -	mp->transaction_events[pdu->params[0]] = transaction;
> +	player->registered_events |= (1 << pdu->params[0]);
> +	player->transaction_events[pdu->params[0]] = transaction;
>  
>  	pdu->params_len = htons(len);
>  
> @@ -1192,7 +873,7 @@ err:
>  static struct pdu_handler {
>  	uint8_t pdu_id;
>  	uint8_t code;
> -	uint8_t (*func) (struct media_player *mp,
> +	uint8_t (*func) (struct avrcp_player *player,
>  					struct avrcp_header *pdu,
>  					uint8_t transaction);
>  } handlers[] = {
> @@ -1229,7 +910,7 @@ static size_t handle_vendordep_pdu(struct avctp *session, uint8_t transaction,
>  					uint8_t *operands, size_t operand_count,
>  					void *user_data)
>  {
> -	struct media_player *mp = user_data;
> +	struct avrcp_player *player = user_data;
>  	struct pdu_handler *handler;
>  	struct avrcp_header *pdu = (void *) operands;
>  	uint32_t company_id = get_company_id(pdu->company_id);
> @@ -1265,7 +946,7 @@ static size_t handle_vendordep_pdu(struct avctp *session, uint8_t transaction,
>  		goto err_metadata;
>  	}
>  
> -	*code = handler->func(mp, pdu, transaction);
> +	*code = handler->func(player, pdu, transaction);
>  
>  	return AVRCP_HEADER_LENGTH + ntohs(pdu->params_len);
>  
> @@ -1276,52 +957,56 @@ err_metadata:
>  	return AVRCP_HEADER_LENGTH + 1;
>  }
>  
> +static struct avrcp_server *find_server(GSList *list, const bdaddr_t *src)
> +{
> +	for (; list; list = list->next) {
> +		struct avrcp_server *server = list->data;
> +
> +		if (bacmp(&server->src, src) == 0)
> +			return server;
> +	}
> +
> +	return NULL;
> +}
> +
>  static void state_changed(struct audio_device *dev, avctp_state_t old_state,
>  				avctp_state_t new_state, void *user_data)
>  {
> -	struct media_player *mp = dev->media_player;
> +	struct avrcp_server *server;
> +	struct avrcp_player *player;
>  
> +	server = find_server(servers, &dev->src);
> +	if (!server)
> +		return;
>  
> -	if (!mp)
> +	player = server->active_player;
> +	if (!player)
>  		return;
>  
>  	switch (new_state) {
>  	case AVCTP_STATE_DISCONNECTED:
> -		mp->session = NULL;
> +		player->session = NULL;
>  
> -		if (mp->handler) {
> -			avctp_unregister_pdu_handler(mp->handler);
> -			mp->handler = 0;
> +		if (player->handler) {
> +			avctp_unregister_pdu_handler(player->handler);
> +			player->handler = 0;
>  		}
>  
>  		break;
>  	case AVCTP_STATE_CONNECTING:
> -		mp->session = avctp_connect(&dev->src, &dev->dst);
> +		player->session = avctp_connect(&dev->src, &dev->dst);
>  
> -		if (!mp->handler)
> -			mp->handler = avctp_register_pdu_handler(
> +		if (!player->handler)
> +			player->handler = avctp_register_pdu_handler(
>  							AVC_OP_VENDORDEP,
>  							handle_vendordep_pdu,
> -							mp);
> +							player);
>  		break;
>  	default:
>  		return;
>  	}
>  }
>  
> -static void media_info_init(struct media_info *mi)
> -{
> -	memset(mi, 0, sizeof(*mi));
> -
> -	/*
> -	 * As per section 5.4.1 of AVRCP 1.3 spec, return 0xFFFFFFFF if TG
> -	 * does not support these attributes (i.e. they were never set via
> -	 * D-Bus)
> -	 */
> -	mi->track_len = 0xFFFFFFFF;
> -	mi->elapsed = 0xFFFFFFFF;
> -}
> -
>  gboolean avrcp_connect(struct audio_device *dev)
>  {
>  	struct avctp *session;
> @@ -1344,8 +1029,6 @@ void avrcp_disconnect(struct audio_device *dev)
>  	avctp_disconnect(session);
>  }
>  
> -static unsigned int avctp_id = 0;
> -
>  int avrcp_register(DBusConnection *conn, const bdaddr_t *src, GKeyFile *config)
>  {
>  	sdp_record_t *record;
> @@ -1390,7 +1073,7 @@ int avrcp_register(DBusConnection *conn, const bdaddr_t *src, GKeyFile *config)
>  	}
>  
>  	if (add_record_to_server(src, record) < 0) {
> -		error("Unable to register AVRCP mpler service record");
> +		error("Unable to register AVRCP service record");
>  		sdp_record_free(record);
>  		g_free(server);
>  		return -1;
> @@ -1411,16 +1094,17 @@ int avrcp_register(DBusConnection *conn, const bdaddr_t *src, GKeyFile *config)
>  	return 0;
>  }
>  
> -static struct avrcp_server *find_server(GSList *list, const bdaddr_t *src)
> +static void player_destroy(gpointer data)
>  {
> -	for (; list; list = list->next) {
> -		struct avrcp_server *server = list->data;
> +	struct avrcp_player *player = data;
>  
> -		if (bacmp(&server->src, src) == 0)
> -			return server;
> -	}
> +	if (player->destroy)
> +		player->destroy(player->user_data);
>  
> -	return NULL;
> +	if (player->handler)
> +		avctp_unregister_pdu_handler(player->handler);
> +
> +	g_free(player);
>  }
>  
>  void avrcp_unregister(const bdaddr_t *src)
> @@ -1431,6 +1115,8 @@ void avrcp_unregister(const bdaddr_t *src)
>  	if (!server)
>  		return;
>  
> +	g_slist_free_full(server->players, player_destroy);
> +
>  	servers = g_slist_remove(servers, server);
>  
>  	remove_record_from_server(server->ct_record_id);
> @@ -1442,239 +1128,49 @@ void avrcp_unregister(const bdaddr_t *src)
>  	if (servers)
>  		return;
>  
> -	if (avctp_id)
> +	if (avctp_id) {
>  		avctp_remove_state_cb(avctp_id);
> -}
> -
> -static DBusMessage *mp_set_property(DBusConnection *conn,
> -					DBusMessage *msg, void *data)
> -{
> -	struct audio_device *device = data;
> -	struct media_player *mp = device->media_player;
> -	DBusMessageIter iter;
> -	DBusMessageIter var;
> -	const char *attrstr, *valstr;
> -	int attr, val;
> -
> -	if (!dbus_message_iter_init(msg, &iter))
> -		return btd_error_invalid_args(msg);
> -
> -	if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
> -		return btd_error_invalid_args(msg);
> -
> -	dbus_message_iter_get_basic(&iter, &attrstr);
> -
> -	attr = attr_to_val(attrstr);
> -	if (attr < 0)
> -		return btd_error_not_supported(msg);
> -
> -	dbus_message_iter_next(&iter);
> -
> -	if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT)
> -		return btd_error_invalid_args(msg);
> -
> -	dbus_message_iter_recurse(&iter, &var);
> -
> -	/* Only string arguments are supported for now */
> -	if (dbus_message_iter_get_arg_type(&var) != DBUS_TYPE_STRING)
> -		return btd_error_invalid_args(msg);
> -
> -	dbus_message_iter_get_basic(&var, &valstr);
> -
> -	val = attrval_to_val(attr, valstr);
> -	if (val < 0)
> -		return btd_error_not_supported(msg);
> -
> -	mp_set_attribute(mp, attr, val);
> -
> -	return dbus_message_new_method_return(msg);
> -}
> -
> -static DBusMessage *mp_change_playback(DBusConnection *conn,
> -					DBusMessage *msg, void *data)
> -{
> -	struct audio_device *device = data;
> -	struct media_player *mp = device->media_player;
> -	const char *statusstr;
> -	int status;
> -	uint32_t elapsed;
> -
> -	if (!dbus_message_get_args(msg, NULL, DBUS_TYPE_STRING, &statusstr,
> -						DBUS_TYPE_UINT32, &elapsed,
> -						DBUS_TYPE_INVALID))
> -		return btd_error_invalid_args(msg);
> -
> -	status = play_status_to_val(statusstr);
> -	if (status < 0)
> -		return btd_error_invalid_args(msg);
> -
> -	mp_set_playback_status(mp, status, elapsed);
> -
> -	return dbus_message_new_method_return(msg);
> -}
> -
> -static gboolean media_info_parse(DBusMessageIter *iter, struct media_info *mi)
> -{
> -	DBusMessageIter dict;
> -	DBusMessageIter var;
> -	int ctype;
> -
> -	ctype = dbus_message_iter_get_arg_type(iter);
> -	if (ctype != DBUS_TYPE_ARRAY)
> -		return FALSE;
> -
> -	media_info_init(mi);
> -	dbus_message_iter_recurse(iter, &dict);
> -
> -	while ((ctype = dbus_message_iter_get_arg_type(&dict)) !=
> -							DBUS_TYPE_INVALID) {
> -		DBusMessageIter entry;
> -		const char *key;
> -
> -		if (ctype != DBUS_TYPE_DICT_ENTRY)
> -			return FALSE;
> -
> -		dbus_message_iter_recurse(&dict, &entry);
> -		if (dbus_message_iter_get_arg_type(&entry) != DBUS_TYPE_STRING)
> -			return FALSE;
> -
> -		dbus_message_iter_get_basic(&entry, &key);
> -		dbus_message_iter_next(&entry);
> -
> -		if (dbus_message_iter_get_arg_type(&entry) != DBUS_TYPE_VARIANT)
> -			return FALSE;
> -
> -		dbus_message_iter_recurse(&entry, &var);
> -
> -		if (!strcmp(key, "Title")) {
> -			if (dbus_message_iter_get_arg_type(&var) !=
> -							DBUS_TYPE_STRING)
> -				return FALSE;
> -
> -			dbus_message_iter_get_basic(&var, &mi->title);
> -		} else if (!strcmp(key, "Artist")) {
> -			if (dbus_message_iter_get_arg_type(&var) !=
> -							DBUS_TYPE_STRING)
> -				return FALSE;
> -
> -			dbus_message_iter_get_basic(&var, &mi->artist);
> -		} else if (!strcmp(key, "Album")) {
> -			if (dbus_message_iter_get_arg_type(&var) !=
> -							DBUS_TYPE_STRING)
> -				return FALSE;
> -
> -			dbus_message_iter_get_basic(&var, &mi->album);
> -		} else if (!strcmp(key, "Genre")) {
> -			if (dbus_message_iter_get_arg_type(&var) !=
> -							DBUS_TYPE_STRING)
> -				return FALSE;
> -
> -			dbus_message_iter_get_basic(&var, &mi->genre);
> -		} else if (!strcmp(key, "NumberOfTracks")) {
> -			if (dbus_message_iter_get_arg_type(&var) !=
> -							DBUS_TYPE_UINT32)
> -				return FALSE;
> -
> -			dbus_message_iter_get_basic(&var, &mi->ntracks);
> -		} else if (!strcmp(key, "TrackNumber")) {
> -			if (dbus_message_iter_get_arg_type(&var) !=
> -							DBUS_TYPE_UINT32)
> -				return FALSE;
> -
> -			dbus_message_iter_get_basic(&var, &mi->track);
> -		} else if (!strcmp(key, "TrackDuration")) {
> -			if (dbus_message_iter_get_arg_type(&var) !=
> -							DBUS_TYPE_UINT32)
> -				return FALSE;
> -
> -			dbus_message_iter_get_basic(&var, &mi->track_len);
> -		} else {
> -			return FALSE;
> -		}
> -
> -		dbus_message_iter_next(&dict);
> +		avctp_id = 0;
>  	}
> -
> -	if (mi->title == NULL)
> -		return FALSE;
> -
> -	return TRUE;
>  }
>  
> -static DBusMessage *mp_change_track(DBusConnection *conn,
> -						DBusMessage *msg, void *data)
> +struct avrcp_player *avrcp_register_player(const bdaddr_t *src,
> +						struct avrcp_player_cb *cb,
> +						void *user_data,
> +						GDestroyNotify destroy)
>  {
> -	struct audio_device *device = data;
> -	struct media_player *mp = device->media_player;
> -	DBusMessageIter iter;
> -	struct media_info mi;
> -
> -
> -	dbus_message_iter_init(msg, &iter);
> -	if (!media_info_parse(&iter, &mi))
> -		return btd_error_invalid_args(msg);
> -
> -	mp_set_media_attributes(mp, &mi);
> -
> -	return dbus_message_new_method_return(msg);
> -}
> -
> -static GDBusMethodTable mp_methods[] = {
> -	{ "SetProperty",	"sv",		"",	mp_set_property },
> -	{ "ChangePlayback",	"su",		"",	mp_change_playback },
> -	{ "ChangeTrack",	"a{sv}",	"",	mp_change_track },
> -	{ }
> -};
> +	struct avrcp_server *server;
> +	struct avrcp_player *player;
>  
> -static GDBusSignalTable mp_signals[] = {
> -	{ "PropertyChanged",		"sv"	},
> -	{ }
> -};
> +	server = find_server(servers, src);
> +	if (!server)
> +		return NULL;
>  
> -static void mp_path_unregister(void *data)
> -{
> -	struct audio_device *dev = data;
> -	struct media_player *mp = dev->media_player;
> +	player = g_new0(struct avrcp_player, 1);
> +	player->server = server;
> +	player->cb = cb;
> +	player->user_data = user_data;
> +	player->destroy = destroy;
>  
> -	DBG("Unregistered interface %s on path %s",
> -		MEDIA_PLAYER_INTERFACE, dev->path);
> +	if (!server->players)
> +		server->active_player = player;
>  
> -	if (mp->handler)
> -		avctp_unregister_pdu_handler(mp->handler);
> +	if (!avctp_id)
> +		avctp_id = avctp_add_state_cb(state_changed, NULL);
>  
> -	g_timer_destroy(mp->timer);
> -	g_free(mp);
> -}
> +	server->players = g_slist_append(server->players, player);
>  
> -void media_player_unregister(struct audio_device *dev)
> -{
> -	g_dbus_unregister_interface(dev->conn, dev->path,
> -						MEDIA_PLAYER_INTERFACE);
> +	return player;
>  }
>  
> -struct media_player *media_player_init(struct audio_device *dev)
> +void avrcp_unregister_player(struct avrcp_player *player)
>  {
> -	struct media_player *mp;
> -
> -	if (!g_dbus_register_interface(dev->conn, dev->path,
> -						MEDIA_PLAYER_INTERFACE,
> -						mp_methods, mp_signals, NULL,
> -						dev, mp_path_unregister)) {
> -		error("D-Bus failed do register %s on path %s",
> -					MEDIA_PLAYER_INTERFACE, dev->path);
> -		return NULL;
> -	}
> +	struct avrcp_server *server = player->server;
>  
> -	DBG("Registered interface %s on path %s",
> -					MEDIA_PLAYER_INTERFACE, dev->path);
> +	server->players = g_slist_remove(server->players, player);
>  
> -	mp = g_new0(struct media_player, 1);
> -	mp->timer = g_timer_new();
> -	mp->dev = dev;
> -	media_info_init(&mp->mi);
> -
> -	if (!avctp_id)
> -		avctp_id = avctp_add_state_cb(state_changed, NULL);
> +	if (server->active_player == player)
> +		server->active_player = g_slist_nth_data(server->players, 0);
>  
> -	return mp;
> +	player_destroy(player);
>  }
> diff --git a/audio/avrcp.h b/audio/avrcp.h
> index 1fd912d..850cd6a 100644
> --- a/audio/avrcp.h
> +++ b/audio/avrcp.h
> @@ -22,7 +22,63 @@
>   *
>   */
>  
> -#define MEDIA_PLAYER_INTERFACE "org.bluez.MediaPlayer"
> +/* player attributes */
> +#define AVRCP_ATTRIBUTE_ILEGAL		0x00
> +#define AVRCP_ATTRIBUTE_EQUALIZER	0x01
> +#define AVRCP_ATTRIBUTE_REPEAT_MODE	0x02
> +#define AVRCP_ATTRIBUTE_SHUFFLE		0x03
> +#define AVRCP_ATTRIBUTE_SCAN		0x04
> +
> +/* equalizer values */
> +#define AVRCP_EQUALIZER_ON		0x01
> +#define AVRCP_EQUALIZER_OFF		0x02
> +
> +/* repeat mode values */
> +#define AVRCP_REPEAT_MODE_OFF		0x01
> +#define AVRCP_REPEAT_MODE_SINGLE	0x02
> +#define AVRCP_REPEAT_MODE_ALL		0x03
> +#define AVRCP_REPEAT_MODE_GROUP		0x04
> +
> +/* shuffle values */
> +#define AVRCP_SHUFFLE_OFF		0x01
> +#define AVRCP_SHUFFLE_ALL		0x02
> +#define AVRCP_SHUFFLE_GROUP		0x03
> +
> +/* scan values */
> +#define AVRCP_SCAN_OFF			0x01
> +#define AVRCP_SCAN_ALL			0x02
> +#define AVRCP_SCAN_GROUP		0x03
> +
> +/* media attributes */
> +#define AVRCP_MEDIA_ATTRIBUTE_ILLEGAL	0x00
> +#define AVRCP_MEDIA_ATTRIBUTE_TITLE	0x01
> +#define AVRCP_MEDIA_ATTRIBUTE_ARTIST	0x02
> +#define AVRCP_MEDIA_ATTRIBUTE_ALBUM	0x03
> +#define AVRCP_MEDIA_ATTRIBUTE_TRACK	0x04
> +#define AVRCP_MEDIA_ATTRIBUTE_N_TRACKS	0x05
> +#define AVRCP_MEDIA_ATTRIBUTE_GENRE	0x06
> +#define AVRCP_MEDIA_ATTRIBUTE_DURATION	0x07
> +#define AVRCP_MEDIA_ATTRIBUTE_LAST	AVRCP_MEDIA_ATTRIBUTE_DURATION
> +
> +/* play status */
> +#define AVRCP_PLAY_STATUS_STOPPED	0x00
> +#define AVRCP_PLAY_STATUS_PLAYING	0x01
> +#define AVRCP_PLAY_STATUS_PAUSED	0x02
> +#define AVRCP_PLAY_STATUS_FWD_SEEK	0x03
> +#define AVRCP_PLAY_STATUS_REV_SEEK	0x04
> +#define AVRCP_PLAY_STATUS_ERROR		0xFF
> +
> +/* Notification events */
> +#define AVRCP_EVENT_STATUS_CHANGED	0x01
> +#define AVRCP_EVENT_TRACK_CHANGED	0x02
> +
> +struct avrcp_player_cb {
> +	int (*get_setting) (uint8_t attr, void *user_data);
> +	int (*set_setting) (uint8_t attr, uint8_t value, void *user_data);
> +	void *(*get_metadata) (uint32_t id, void *user_data);
> +	uint8_t (*get_status) (void *user_data);
> +	uint32_t (*get_position) (void *user_data);
> +};
>  
>  int avrcp_register(DBusConnection *conn, const bdaddr_t *src, GKeyFile *config);
>  void avrcp_unregister(const bdaddr_t *src);
> @@ -30,5 +86,10 @@ void avrcp_unregister(const bdaddr_t *src);
>  gboolean avrcp_connect(struct audio_device *dev);
>  void avrcp_disconnect(struct audio_device *dev);
>  
> -struct media_player *media_player_init(struct audio_device *dev);
> -void media_player_unregister(struct audio_device *dev);
> +struct avrcp_player *avrcp_register_player(const bdaddr_t *src,
> +						struct avrcp_player_cb *cb,
> +						void *user_data,
> +						GDestroyNotify destroy);
> +void avrcp_unregister_player(struct avrcp_player *player);
> +
> +int avrcp_player_event(struct avrcp_player *player, uint8_t id, void *data);
> diff --git a/audio/device.c b/audio/device.c
> index f455bcf..a9d35f9 100644
> --- a/audio/device.c
> +++ b/audio/device.c
> @@ -731,9 +731,6 @@ void audio_device_unregister(struct audio_device *device)
>  	if (device->control)
>  		control_unregister(device);
>  
> -	if (device->media_player)
> -		media_player_unregister(device);
> -
>  	g_dbus_unregister_interface(device->conn, device->path,
>  						AUDIO_INTERFACE);
>  
> diff --git a/audio/device.h b/audio/device.h
> index 9645d93..5117fca 100644
> --- a/audio/device.h
> +++ b/audio/device.h
> @@ -44,7 +44,6 @@ struct target;
>  struct sink;
>  struct headset;
>  struct gateway;
> -struct media_player;
>  struct dev_priv;
>  
>  struct audio_device {
> @@ -63,7 +62,6 @@ struct audio_device {
>  	struct source *source;
>  	struct control *control;
>  	struct target *target;
> -	struct media_player *media_player;
>  
>  	guint hs_preauth_id;
>  
> diff --git a/audio/manager.c b/audio/manager.c
> index 06d3f0e..7ec0311 100644
> --- a/audio/manager.c
> +++ b/audio/manager.c
> @@ -119,7 +119,6 @@ static struct enabled_interfaces enabled = {
>  	.control	= TRUE,
>  	.socket		= TRUE,
>  	.media		= FALSE,
> -	.media_player	= FALSE,
>  };
>  
>  static struct audio_adapter *find_adapter(GSList *list,
> @@ -224,8 +223,6 @@ static void handle_uuid(const char *uuidstr, struct audio_device *device)
>  		else
>  			device->control = control_init(device, uuid16);
>  
> -		if (enabled.media_player && !device->media_player)
> -			device->media_player = media_player_init(device);
>  		if (device->sink && sink_is_active(device))
>  			avrcp_connect(device);
>  		break;
> @@ -1177,8 +1174,6 @@ int audio_manager_init(DBusConnection *conn, GKeyFile *conf,
>  			enabled.socket = TRUE;
>  		else if (g_str_equal(list[i], "Media"))
>  			enabled.media = TRUE;
> -		else if (g_str_equal(list[i], "MediaPlayer"))
> -			enabled.media_player = TRUE;
>  
>  	}
>  	g_strfreev(list);
> @@ -1200,8 +1195,6 @@ int audio_manager_init(DBusConnection *conn, GKeyFile *conf,
>  			enabled.socket = FALSE;
>  		else if (g_str_equal(list[i], "Media"))
>  			enabled.media = FALSE;
> -		else if (g_str_equal(list[i], "MediaPlayer"))
> -			enabled.media_player = FALSE;
>  	}
>  	g_strfreev(list);
>  
> diff --git a/audio/media.c b/audio/media.c
> index 5ab3eab..593b5dd 100644
> --- a/audio/media.c
> +++ b/audio/media.c
> @@ -42,6 +42,7 @@
>  #include "media.h"
>  #include "transport.h"
>  #include "a2dp.h"
> +#include "avrcp.h"
>  #include "headset.h"
>  #include "gateway.h"
>  #include "manager.h"
> @@ -52,6 +53,7 @@
>  
>  #define MEDIA_INTERFACE "org.bluez.Media"
>  #define MEDIA_ENDPOINT_INTERFACE "org.bluez.MediaEndpoint"
> +#define MEDIA_PLAYER_INTERFACE "org.bluez.MediaPlayer"
>  
>  #define REQUEST_TIMEOUT (3 * 1000)		/* 3 seconds */
>  
> @@ -60,6 +62,7 @@ struct media_adapter {
>  	char			*path;		/* Adapter path */
>  	DBusConnection		*conn;		/* Adapter connection */
>  	GSList			*endpoints;	/* Endpoints list */
> +	GSList			*players;	/* Players list */
>  };
>  
>  struct endpoint_request {
> @@ -86,6 +89,29 @@ struct media_endpoint {
>  	struct media_adapter	*adapter;
>  };
>  
> +struct media_player {
> +	struct media_adapter	*adapter;
> +	struct avrcp_player	*player;
> +	char			*sender;	/* Player DBus bus id */
> +	char			*path;		/* Player object path */
> +	GHashTable		*settings;	/* Player settings */
> +	GHashTable		*track;		/* Player current track */
> +	guint			watch;
> +	guint			property_watch;
> +	guint			track_watch;
> +	uint8_t			status;
> +	uint32_t		position;
> +	GTimer			*timer;
> +};
> +
> +struct metadata_value {
> +	int			type;
> +	union {
> +		char		*str;
> +		uint32_t	num;
> +	} value;
> +};
> +
>  static GSList *adapters = NULL;
>  
>  static void endpoint_request_free(struct endpoint_request *request)
> @@ -822,9 +848,759 @@ static DBusMessage *unregister_endpoint(DBusConnection *conn, DBusMessage *msg,
>  	return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
>  }
>  
> +static struct media_player *media_adapter_find_player(
> +						struct media_adapter *adapter,
> +						const char *sender,
> +						const char *path)
> +{
> +	GSList *l;
> +
> +	for (l = adapter->endpoints; l; l = l->next) {
> +		struct media_player *mp = l->data;
> +
> +		if (sender && g_strcmp0(mp->sender, sender) != 0)
> +			continue;
> +
> +		if (path && g_strcmp0(mp->path, path) != 0)
> +			continue;
> +
> +		return mp;
> +	}
> +
> +	return NULL;
> +}
> +
> +static void media_player_free(gpointer data)
> +{
> +	struct media_player *mp = data;
> +	struct media_adapter *adapter = mp->adapter;
> +
> +	g_dbus_remove_watch(adapter->conn, mp->watch);
> +	g_dbus_remove_watch(adapter->conn, mp->property_watch);
> +	g_dbus_remove_watch(adapter->conn, mp->track_watch);
> +
> +	if (mp->track)
> +		g_hash_table_unref(mp->track);
> +
> +	if (mp->settings)
> +		g_hash_table_unref(mp->settings);
> +
> +	g_free(mp->sender);
> +	g_free(mp->path);
> +	g_free(mp);
> +}
> +
> +static void media_player_destroy(struct media_player *mp)
> +{
> +	DBG("sender=%s path=%s", mp->sender, mp->path);
> +
> +	if (mp->player) {
> +		avrcp_unregister_player(mp->player);
> +		return;
> +	}
> +
> +	media_player_free(mp);
> +}
> +
> +static void media_player_remove(struct media_player *mp)
> +{
> +	info("Player unregistered: sender=%s path=%s", mp->sender, mp->path);
> +
> +	media_player_destroy(mp);
> +}
> +
> +static const char *attrval_to_str(uint8_t attr, uint8_t value)
> +{
> +	switch (attr) {
> +	case AVRCP_ATTRIBUTE_EQUALIZER:
> +		switch (value) {
> +		case AVRCP_EQUALIZER_ON:
> +			return "on";
> +		case AVRCP_EQUALIZER_OFF:
> +			return "off";
> +		}
> +
> +		break;
> +	case AVRCP_ATTRIBUTE_REPEAT_MODE:
> +		switch (value) {
> +		case AVRCP_REPEAT_MODE_OFF:
> +			return "off";
> +		case AVRCP_REPEAT_MODE_SINGLE:
> +			return "singletrack";
> +		case AVRCP_REPEAT_MODE_ALL:
> +			return "alltracks";
> +		case AVRCP_REPEAT_MODE_GROUP:
> +			return "group";
> +		}
> +
> +		break;
> +	/* Shuffle and scan have the same values */
> +	case AVRCP_ATTRIBUTE_SHUFFLE:
> +	case AVRCP_ATTRIBUTE_SCAN:
> +		switch (value) {
> +		case AVRCP_SCAN_OFF:
> +			return "off";
> +		case AVRCP_SCAN_ALL:
> +			return "alltracks";
> +		case AVRCP_SCAN_GROUP:
> +			return "group";
> +		}
> +
> +		break;
> +	}
> +
> +	return NULL;
> +}
> +
> +static int attrval_to_val(uint8_t attr, const char *value)
> +{
> +	int ret;
> +
> +	switch (attr) {
> +	case AVRCP_ATTRIBUTE_EQUALIZER:
> +		if (!strcmp(value, "off"))
> +			ret = AVRCP_EQUALIZER_OFF;
> +		else if (!strcmp(value, "on"))
> +			ret = AVRCP_EQUALIZER_ON;
> +		else
> +			ret = -EINVAL;
> +
> +		return ret;
> +	case AVRCP_ATTRIBUTE_REPEAT_MODE:
> +		if (!strcmp(value, "off"))
> +			ret = AVRCP_REPEAT_MODE_OFF;
> +		else if (!strcmp(value, "singletrack"))
> +			ret = AVRCP_REPEAT_MODE_SINGLE;
> +		else if (!strcmp(value, "alltracks"))
> +			ret = AVRCP_REPEAT_MODE_ALL;
> +		else if (!strcmp(value, "group"))
> +			ret = AVRCP_REPEAT_MODE_GROUP;
> +		else
> +			ret = -EINVAL;
> +
> +		return ret;
> +	case AVRCP_ATTRIBUTE_SHUFFLE:
> +		if (!strcmp(value, "off"))
> +			ret = AVRCP_SHUFFLE_OFF;
> +		else if (!strcmp(value, "alltracks"))
> +			ret = AVRCP_SHUFFLE_ALL;
> +		else if (!strcmp(value, "group"))
> +			ret = AVRCP_SHUFFLE_GROUP;
> +		else
> +			ret = -EINVAL;
> +
> +		return ret;
> +	case AVRCP_ATTRIBUTE_SCAN:
> +		if (!strcmp(value, "off"))
> +			ret = AVRCP_SCAN_OFF;
> +		else if (!strcmp(value, "alltracks"))
> +			ret = AVRCP_SCAN_ALL;
> +		else if (!strcmp(value, "group"))
> +			ret = AVRCP_SCAN_GROUP;
> +		else
> +			ret = -EINVAL;
> +
> +		return ret;
> +	}
> +
> +	return -EINVAL;
> +}
> +
> +static const char *attr_to_str(uint8_t attr)
> +{
> +	switch (attr) {
> +	case AVRCP_ATTRIBUTE_EQUALIZER:
> +		return "Equalizer";
> +	case AVRCP_ATTRIBUTE_REPEAT_MODE:
> +		return "Repeat";
> +	case AVRCP_ATTRIBUTE_SHUFFLE:
> +		return "Shuffle";
> +	case AVRCP_ATTRIBUTE_SCAN:
> +		return "Scan";
> +	}
> +
> +	return NULL;
> +}
> +
> +static int attr_to_val(const char *str)
> +{
> +	if (!strcasecmp(str, "Equalizer"))
> +		return AVRCP_ATTRIBUTE_EQUALIZER;
> +	else if (!strcasecmp(str, "Repeat"))
> +		return AVRCP_ATTRIBUTE_REPEAT_MODE;
> +	else if (!strcasecmp(str, "Shuffle"))
> +		return AVRCP_ATTRIBUTE_SHUFFLE;
> +	else if (!strcasecmp(str, "Scan"))
> +		return AVRCP_ATTRIBUTE_SCAN;
> +
> +	return -EINVAL;
> +}
> +
> +static int play_status_to_val(const char *status)
> +{
> +	if (!strcasecmp(status, "stopped"))
> +		return AVRCP_PLAY_STATUS_STOPPED;
> +	else if (!strcasecmp(status, "playing"))
> +		return AVRCP_PLAY_STATUS_PLAYING;
> +	else if (!strcasecmp(status, "paused"))
> +		return AVRCP_PLAY_STATUS_PAUSED;
> +	else if (!strcasecmp(status, "forward-seek"))
> +		return AVRCP_PLAY_STATUS_FWD_SEEK;
> +	else if (!strcasecmp(status, "reverse-seek"))
> +		return AVRCP_PLAY_STATUS_REV_SEEK;
> +	else if (!strcasecmp(status, "error"))
> +		return AVRCP_PLAY_STATUS_ERROR;
> +
> +	return -EINVAL;
> +}
> +
> +static int metadata_to_val(const char *str)
> +{
> +	if (!strcasecmp(str, "Title"))
> +		return AVRCP_MEDIA_ATTRIBUTE_TITLE;
> +	else if (!strcasecmp(str, "Artist"))
> +		return AVRCP_MEDIA_ATTRIBUTE_ARTIST;
> +	else if (!strcasecmp(str, "Album"))
> +		return AVRCP_MEDIA_ATTRIBUTE_ALBUM;
> +	else if (!strcasecmp(str, "Genre"))
> +		return AVRCP_MEDIA_ATTRIBUTE_GENRE;
> +	else if (!strcasecmp(str, "NumberOfTracks"))
> +		return AVRCP_MEDIA_ATTRIBUTE_N_TRACKS;
> +	else if (!strcasecmp(str, "Number"))
> +		return AVRCP_MEDIA_ATTRIBUTE_TRACK;
> +	else if (!strcasecmp(str, "Duration"))
> +		return AVRCP_MEDIA_ATTRIBUTE_DURATION;
> +
> +	return -EINVAL;
> +}
> +
> +static const char *metadata_to_str(uint32_t id)
> +{
> +	switch (id) {
> +	case AVRCP_MEDIA_ATTRIBUTE_TITLE:
> +		return "Title";
> +	case AVRCP_MEDIA_ATTRIBUTE_ARTIST:
> +		return "Artist";
> +	case AVRCP_MEDIA_ATTRIBUTE_ALBUM:
> +		return "Album";
> +	case AVRCP_MEDIA_ATTRIBUTE_GENRE:
> +		return "Genre";
> +	case AVRCP_MEDIA_ATTRIBUTE_TRACK:
> +		return "Track";
> +	case AVRCP_MEDIA_ATTRIBUTE_N_TRACKS:
> +		return "NumberOfTracks";
> +	case AVRCP_MEDIA_ATTRIBUTE_DURATION:
> +		return "Duration";
> +	}
> +
> +	return NULL;
> +}
> +
> +static int get_setting(uint8_t attr, void *user_data)
> +{
> +	struct media_player *mp = user_data;
> +	void *value;
> +
> +	DBG("%s", attr_to_str(attr));
> +
> +	value = g_hash_table_lookup(mp->settings, GUINT_TO_POINTER(attr));
> +	if (!value)
> +		return -EINVAL;
> +
> +	return GPOINTER_TO_UINT(value);
> +}
> +
> +static int set_setting(uint8_t attr, uint8_t val, void *user_data)
> +{
> +	struct media_player *mp = user_data;
> +	struct media_adapter *adapter = mp->adapter;
> +	const char *property, *value;
> +	DBusMessage *msg;
> +	DBusMessageIter iter, var;
> +
> +	property = attr_to_str(attr);
> +	value = attrval_to_str(attr, val);
> +
> +	DBG("%s = %s", property, value);
> +
> +	if (property == NULL || value == NULL)
> +		return -EINVAL;
> +
> +	msg = dbus_message_new_method_call(mp->sender, mp->path,
> +						MEDIA_PLAYER_INTERFACE,
> +						"SetProperty");
> +	if (msg == NULL) {
> +		error("Couldn't allocate D-Bus message");
> +		return -ENOMEM;
> +	}
> +
> +	dbus_message_iter_init_append(msg, &iter);
> +	dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING, &property);
> +
> +	dbus_message_iter_open_container(&iter, DBUS_TYPE_VARIANT,
> +						DBUS_TYPE_STRING_AS_STRING,
> +						&var);
> +	dbus_message_iter_append_basic(&var, DBUS_TYPE_STRING, &value);
> +	dbus_message_iter_close_container(&iter, &var);
> +
> +	g_dbus_send_message(adapter->conn, msg);
> +
> +	return 0;
> +}
> +
> +static void *get_metadata(uint32_t id, void *user_data)
> +{
> +	struct media_player *mp = user_data;
> +	struct metadata_value *value;
> +
> +	DBG("%s", metadata_to_str(id));
> +
> +	value = g_hash_table_lookup(mp->track, GUINT_TO_POINTER(id));
> +	if (!value)
> +		return NULL;
> +
> +	switch (value->type) {
> +	case DBUS_TYPE_STRING:
> +		return value->value.str;
> +	case DBUS_TYPE_UINT32:
> +		return GUINT_TO_POINTER(value->value.num);
> +	}
> +
> +	return NULL;
> +}
> +
> +static uint8_t get_status(void *user_data)
> +{
> +	struct media_player *mp = user_data;
> +
> +	return mp->status;
> +}
> +
> +static uint32_t get_position(void *user_data)
> +{
> +	struct media_player *mp = user_data;
> +	double timedelta;
> +	uint32_t sec, msec;
> +
> +	if (mp->status != AVRCP_PLAY_STATUS_PLAYING)
> +		return mp->position;
> +
> +	timedelta = g_timer_elapsed(mp->timer, NULL);
> +
> +	sec = (uint32_t) timedelta;
> +	msec = (uint32_t) ((timedelta - sec) * 1000);
> +
> +	return mp->position + sec * 1000 + msec;

Looks right now.

> +}
> +
> +static struct avrcp_player_cb player_cb = {
> +	.get_setting = get_setting,
> +	.set_setting = set_setting,
> +	.get_metadata = get_metadata,
> +	.get_position = get_position,
> +	.get_status = get_status
> +};
> +
> +static void media_player_exit(DBusConnection *connection, void *user_data)
> +{
> +	struct media_player *mp = user_data;
> +
> +	mp->watch = 0;
> +	media_player_remove(mp);
> +}
> +
> +static gboolean set_status(struct media_player *mp, DBusMessageIter *iter)
> +{
> +	const char *value;
> +	int val;
> +
> +	if (dbus_message_iter_get_arg_type(iter) != DBUS_TYPE_STRING)
> +		return FALSE;
> +
> +	dbus_message_iter_get_basic(iter, &value);
> +	DBG("Status=%s", value);
> +
> +	val = play_status_to_val(value);
> +	if (val < 0) {
> +		error("Invalid status");
> +		return FALSE;
> +	}
> +
> +	if (mp->status == val)
> +		return TRUE;
> +

There's a problem here. A solution would be to make the following calls:

	mp->position = get_position(mp);
	g_timer_start(mp->timer);


> +	mp->status = val;
> +
> +	avrcp_player_event(mp->player, AVRCP_EVENT_STATUS_CHANGED, &val);
> +
> +	return TRUE;
> +}
> +
> +static gboolean set_position(struct media_player *mp, DBusMessageIter *iter)
> +{
> +	uint32_t value;
> +
> +	if (dbus_message_iter_get_arg_type(iter) != DBUS_TYPE_UINT32)
> +			return FALSE;
> +
> +	dbus_message_iter_get_basic(iter, &value);
> +	DBG("Position=%u", value);
> +
> +	mp->position = value;
> +	g_timer_start(mp->timer);
> +
> +	return TRUE;
> +}
> +
> +static gboolean set_property(struct media_player *mp, const char *key,
> +							DBusMessageIter *entry)
> +{
> +	DBusMessageIter var;
> +	const char *value;
> +	int attr, val;
> +
> +	if (dbus_message_iter_get_arg_type(entry) != DBUS_TYPE_VARIANT)
> +		return FALSE;
> +
> +	dbus_message_iter_recurse(entry, &var);
> +
> +	if (strcasecmp(key, "Status") == 0)
> +		return set_status(mp, &var);
> +
> +	if (strcasecmp(key, "Position") == 0)
> +		return set_position(mp, &var);
> +
> +	attr = attr_to_val(key);
> +	if (attr < 0)
> +		return FALSE;
> +
> +	if (dbus_message_iter_get_arg_type(&var) != DBUS_TYPE_STRING)
> +		return FALSE;
> +
> +	dbus_message_iter_get_basic(&var, &value);
> +
> +	val = attrval_to_val(attr, value);
> +	if (val < 0)
> +		return FALSE;
> +
> +	DBG("%s=%s", key, value);
> +
> +	if (!mp->settings)
> +		mp->settings = g_hash_table_new(g_direct_hash, g_direct_equal);
> +
> +	g_hash_table_replace(mp->settings, GUINT_TO_POINTER(attr),
> +						GUINT_TO_POINTER(val));
> +
> +	return TRUE;
> +}
> +
> +static gboolean property_changed(DBusConnection *connection, DBusMessage *msg,
> +							void *user_data)
> +{
> +	struct media_player *mp = user_data;
> +	DBusMessageIter iter, entry;
> +	const char *property;
> +
> +	DBG("sender=%s path=%s", mp->sender, mp->path);
> +
> +	dbus_message_iter_init(msg, &iter);
> +
> +	if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING) {
> +		error("Unexpected signature in %s.%s signal",
> +					dbus_message_get_interface(msg),
> +					dbus_message_get_member(msg));
> +		return TRUE;
> +	}
> +
> +	dbus_message_iter_get_basic(&iter, &property);
> +
> +	dbus_message_iter_next(&iter);
> +	dbus_message_iter_recurse(&iter, &entry);
> +
> +	set_property(mp, property, &entry);
> +
> +	return TRUE;
> +}
> +
> +static void metadata_value_free(gpointer data)
> +{
> +	struct metadata_value *value = data;
> +
> +	switch (value->type) {
> +	case DBUS_TYPE_STRING:
> +		g_free(value->value.str);
> +		break;
> +	}
> +
> +	g_free(value);
> +}
> +
> +static gboolean parse_player_metadata(struct media_player *mp,
> +							DBusMessageIter *iter)
> +{
> +	DBusMessageIter dict;
> +	DBusMessageIter var;
> +	int ctype;
> +	gboolean title = FALSE;
> +
> +	ctype = dbus_message_iter_get_arg_type(iter);
> +	if (ctype != DBUS_TYPE_ARRAY)
> +		return FALSE;
> +
> +	dbus_message_iter_recurse(iter, &dict);
> +
> +	while ((ctype = dbus_message_iter_get_arg_type(&dict)) !=
> +							DBUS_TYPE_INVALID) {
> +		DBusMessageIter entry;
> +		const char *key;
> +		struct metadata_value *value;
> +		int id;
> +
> +		if (ctype != DBUS_TYPE_DICT_ENTRY)
> +			return FALSE;
> +
> +		dbus_message_iter_recurse(&dict, &entry);
> +		if (dbus_message_iter_get_arg_type(&entry) != DBUS_TYPE_STRING)
> +			return FALSE;
> +
> +		dbus_message_iter_get_basic(&entry, &key);
> +		dbus_message_iter_next(&entry);
> +
> +		id = metadata_to_val(key);
> +		if (id < 0)
> +			return FALSE;
> +
> +		if (dbus_message_iter_get_arg_type(&entry) != DBUS_TYPE_VARIANT)
> +			return FALSE;
> +
> +		dbus_message_iter_recurse(&entry, &var);
> +
> +		value = g_new0(struct metadata_value, 1);
> +		value->type = dbus_message_iter_get_arg_type(&var);
> +
> +		switch (id) {
> +		case AVRCP_MEDIA_ATTRIBUTE_TITLE:
> +			title = TRUE;
> +		case AVRCP_MEDIA_ATTRIBUTE_ARTIST:
> +		case AVRCP_MEDIA_ATTRIBUTE_ALBUM:
> +		case AVRCP_MEDIA_ATTRIBUTE_GENRE:
> +			if (value->type != DBUS_TYPE_STRING) {
> +				g_free(value);
> +				return FALSE;
> +			}
> +
> +			dbus_message_iter_get_basic(&var, &value->value.str);
> +			break;
> +		case AVRCP_MEDIA_ATTRIBUTE_TRACK:
> +		case AVRCP_MEDIA_ATTRIBUTE_N_TRACKS:
> +		case AVRCP_MEDIA_ATTRIBUTE_DURATION:
> +			if (value->type != DBUS_TYPE_UINT32) {
> +				g_free(value);
> +				return FALSE;
> +			}
> +
> +			dbus_message_iter_get_basic(&var, &value->value.num);
> +			break;
> +		default:
> +			return FALSE;
> +		}
> +
> +		switch (value->type) {
> +		case DBUS_TYPE_STRING:
> +			value->value.str = g_strdup(value->value.str);
> +			DBG("%s=%s", key, value->value.str);
> +			break;
> +		default:
> +			DBG("%s=%u", key, value->value.num);
> +		}
> +
> +		if (!mp->track)
> +			mp->track = g_hash_table_new_full(g_direct_hash,
> +							g_direct_equal, NULL,
> +							metadata_value_free);
> +
> +		g_hash_table_replace(mp->track, GUINT_TO_POINTER(id), value);
> +		dbus_message_iter_next(&dict);
> +	}
> +
> +	mp->position = 0;
> +	g_timer_start(mp->timer);

Is there any reason not to move these lines to track_changed()? See
comment below.

> +
> +	return title;
> +}
> +
> +static gboolean track_changed(DBusConnection *connection, DBusMessage *msg,
> +							void *user_data)
> +{
> +	struct media_player *mp = user_data;
> +	DBusMessageIter iter;
> +
> +	DBG("sender=%s path=%s", mp->sender, mp->path);
> +
> +	dbus_message_iter_init(msg, &iter);
> +
> +	if (parse_player_metadata(mp, &iter) == FALSE) {
> +		error("Unexpected signature in %s.%s signal",
> +					dbus_message_get_interface(msg),
> +					dbus_message_get_member(msg));

If there's no title, you will still set position to 0 and reseting
the timer.

If app sends a signal track_changed({ "Title": "Bla",
					"Artist": "Bli",
					"IdontKnowThisName", "Blu",
					"Track": 2 })

then you would partially set the fields of the track, log an error and
consider it was started. Not a nice thing to have. This is why I was
setting the fields on stack and if the msg was successfully
parsed I copied it over to mp.

> +	}
> +
> +	avrcp_player_event(mp->player, AVRCP_EVENT_TRACK_CHANGED, NULL);
> +
> +	return TRUE;
> +}
> +
> +static struct media_player *media_player_create(struct media_adapter *adapter,
> +						const char *sender,
> +						const char *path,
> +						int *err)
> +{
> +	struct media_player *mp;
> +
> +	mp = g_new0(struct media_player, 1);
> +	mp->adapter = adapter;
> +	mp->sender = g_strdup(sender);
> +	mp->path = g_strdup(path);
> +	mp->timer = g_timer_new();
> +
> +	mp->watch = g_dbus_add_disconnect_watch(adapter->conn, sender,
> +						media_player_exit, mp,
> +						NULL);
> +	mp->property_watch = g_dbus_add_signal_watch(adapter->conn, sender,
> +						path, MEDIA_PLAYER_INTERFACE,
> +						"PropertyChanged",
> +						property_changed,
> +						mp, NULL);
> +	mp->track_watch = g_dbus_add_signal_watch(adapter->conn, sender,
> +						path, MEDIA_PLAYER_INTERFACE,
> +						"TrackChanged",
> +						track_changed,
> +						mp, NULL);
> +	mp->player = avrcp_register_player(&adapter->src, &player_cb, mp,
> +						media_player_free);
> +	if (!mp->player) {
> +		if (err)
> +			*err = -EPROTONOSUPPORT;
> +		media_player_destroy(mp);
> +		return NULL;
> +	}
> +
> +	adapter->players = g_slist_append(adapter->players, mp);
> +
> +	info("Player registered: sender=%s path=%s", sender, path);
> +
> +	if (err)
> +		*err = 0;
> +
> +	return mp;
> +}
> +
> +static gboolean parse_player_properties(struct media_player *mp,
> +							DBusMessageIter *iter)
> +{
> +	DBusMessageIter dict;
> +	int ctype;
> +
> +	ctype = dbus_message_iter_get_arg_type(iter);
> +	if (ctype != DBUS_TYPE_ARRAY)
> +		return FALSE;
> +
> +	dbus_message_iter_recurse(iter, &dict);
> +
> +	while ((ctype = dbus_message_iter_get_arg_type(&dict)) !=
> +							DBUS_TYPE_INVALID) {
> +		DBusMessageIter entry;
> +		const char *key;
> +
> +		if (ctype != DBUS_TYPE_DICT_ENTRY)
> +			return FALSE;
> +
> +		dbus_message_iter_recurse(&dict, &entry);
> +		if (dbus_message_iter_get_arg_type(&entry) != DBUS_TYPE_STRING)
> +			return FALSE;
> +
> +		dbus_message_iter_get_basic(&entry, &key);
> +		dbus_message_iter_next(&entry);
> +
> +		if (set_property(mp, key, &entry) == FALSE)
> +			return FALSE;
> +
> +		dbus_message_iter_next(&dict);
> +	}
> +
> +	return TRUE;
> +}
> +
> +static DBusMessage *register_player(DBusConnection *conn, DBusMessage *msg,
> +					void *data)
> +{
> +	struct media_adapter *adapter = data;
> +	struct media_player *mp;
> +	DBusMessageIter args;
> +	const char *sender, *path;
> +	int err;
> +
> +	sender = dbus_message_get_sender(msg);
> +
> +	dbus_message_iter_init(msg, &args);
> +
> +	dbus_message_iter_get_basic(&args, &path);
> +	dbus_message_iter_next(&args);
> +
> +	if (media_adapter_find_player(adapter, sender, path) != NULL)
> +		return btd_error_already_exists(msg);
> +
> +	mp = media_player_create(adapter, sender, path, &err);
> +	if (mp == NULL) {
> +		if (err == -EPROTONOSUPPORT)
> +			return btd_error_not_supported(msg);
> +		else
> +			return btd_error_invalid_args(msg);
> +	}
> +
> +	if (parse_player_properties(mp, &args) == FALSE) {
> +		media_player_destroy(mp);
> +		return btd_error_invalid_args(msg);
> +	}
> +
> +	dbus_message_iter_next(&args);
> +
> +	if (parse_player_metadata(mp, &args) == FALSE) {
> +		media_player_destroy(mp);
> +		return btd_error_invalid_args(msg);
> +	}
> +
> +	return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
> +}
> +
> +static DBusMessage *unregister_player(DBusConnection *conn, DBusMessage *msg,
> +					void *data)
> +{
> +	struct media_adapter *adapter = data;
> +	struct media_player *player;
> +	const char *sender, *path;
> +
> +	if (!dbus_message_get_args(msg, NULL,
> +				DBUS_TYPE_OBJECT_PATH, &path,
> +				DBUS_TYPE_INVALID))
> +		return NULL;
> +
> +	sender = dbus_message_get_sender(msg);
> +
> +	player = media_adapter_find_player(adapter, sender, path);
> +	if (player == NULL)
> +		return btd_error_does_not_exist(msg);
> +
> +	media_player_remove(player);
> +
> +	return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
> +}
> +
>  static GDBusMethodTable media_methods[] = {
>  	{ "RegisterEndpoint",	"oa{sv}",	"",	register_endpoint },
>  	{ "UnregisterEndpoint",	"o",		"",	unregister_endpoint },
> +	{ "RegisterPlayer",	"oa{sv}a{sv}","",	register_player },
> +	{ "UnregisterPlayer",	"o",		"",	unregister_player },
>  	{ },
>  };
>  
> diff --git a/doc/media-api.txt b/doc/media-api.txt
> index b2f239a..af4cfa0 100644
> --- a/doc/media-api.txt
> +++ b/doc/media-api.txt
> @@ -44,6 +44,169 @@ Methods		void RegisterEndpoint(object endpoint, dict properties)
>  
>  			Unregister sender end point.
>  
> +		void RegisterPlayer(object player, dict properties,
> +								dict metadata)
> +
> +			Register a media player object to sender, the sender
> +			can register as many objets as it likes.
> +
> +			Note: If the sender disconnects its objects are
> +			automatically unregistered.
> +
> +			Properties:
> +
> +				string Equalizer:
> +
> +					Possible values: "off" or "on"
> +
> +				string Repeat:
> +
> +					Possible values: "off", "singletrack",
> +							"alltracks" or "group"
> +
> +				string Shuffle:
> +
> +					Possible values: "off", "alltracks" or
> +							"group"
> +
> +				string Scan:
> +
> +					Possible values: "off", "alltracks" or
> +							"group"
> +
> +				string Status:
> +
> +					Possible values: "playing", "stopped",
> +							"paused",
> +							"forward-seek",
> +							"reverse-seek" or
> +							"error"
> +
> +				uint32 Position
> +
> +					Playback position in milliseconds
> +
> +			Metadata:
> +
> +				string Title:
> +
> +					Track title name
> +
> +				string Artist:
> +
> +					Track artist name
> +
> +				string Album:
> +
> +					Track album name
> +
> +				string Genre:
> +
> +					Track genre name
> +
> +				uint32 NumberOfTracks:
> +
> +					Number of tracks in total
> +
> +				uint32 Number:
> +
> +					Track number
> +
> +				uint32 Duration:
> +
> +					Track duration in milliseconds
> +
> +			Possible Errors: org.bluez.Error.InvalidArguments
> +					 org.bluez.Error.NotSupported
> +
> +		void UnregisterPlayer(object player)
> +
> +			Unregister sender media player.
> +
> +MediaPlayer hierarchy
> +=====================
> +
> +Service		unique name
> +Interface	org.bluez.MediaPlayer
> +Object path	freely definable
> +
> +Methods		void SetProperty(string property, variant value)
> +
> +			Changes the value of the specified property. Only
> +			properties that are listed a read-write can be changed.
> +
> +			On success this will emit a PropertyChanged signal.
> +
> +Signals		PropertyChanged(string setting, variant value)
> +
> +			This signal indicates a changed value of the given
> +			property.
> +
> +		TrackChanged(dict metadata)
> +
> +			Possible values:
> +
> +				string Title:
> +
> +					Track title name
> +
> +				string Artist:
> +
> +					Track artist name
> +
> +				string Album:
> +
> +					Track album name
> +
> +				string Genre:
> +
> +					Track genre name
> +
> +				uint32 NumberOfTracks:
> +
> +					Number of tracks in total
> +
> +				uint32 Number:
> +
> +					Track number
> +
> +				uint32 Duration:
> +
> +					Track duration in milliseconds
> +
> +		StatusChanged(string status, uint32 position)
> +
> +			Possible status: "playing", "stopped", "paused",
> +					"forward-seek", "reverse-seek" or
> +					"error"
> +
> +Properties	string Equalizer [readwrite]
> +
> +			Possible values: "off" or "on"
> +
> +		string Repeat [readwrite]
> +
> +			Possible values: "off", "singletrack", "alltracks" or
> +					"group"
> +
> +		string Shuffle [readwrite]
> +
> +			Possible values: "off", "alltracks" or "group"
> +
> +		string Scan [readwrite]
> +
> +			Possible values: "off", "alltracks" or "group"
> +
> +		string Status [readonly]
> +
> +			Possible status: "playing", "stopped", "paused",
> +					"forward-seek", "reverse-seek" or
> +					"error"
> +
> +		uint32 Position [readonly]
> +
> +			Playback position in milliseconds
> +
>  MediaEndpoint hierarchy
>  =======================
>  
> -- 
> 1.7.6.4


Otherwise it seems pretty good. Nice work.

How are the tests going? I have some fixes queued here. I'll send them
on top of your patches so you don't waste your time at UPF debugging
them.


Thanks
Lucas De Marchi
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