Support added to handle Get Folder Items browsing PDU
for media player scope in TG role.
e.g.
AVCTP Browsing: Response: type 0x00 label 0 PID 0x110e
AVRCP: GetFolderItems: len 0x0030
Status: 0x04 (Success)
UIDCounter: 0x0000 (0)
NumOfItems: 0x0001 (1)
Item: 0x01 (Media Player)
Length: 0x0028 (40)
PlayerID: 0x0000 (0)
PlayerType: 0x0001 (Audio)
PlayerSubType: 0x00000001 (Audio Book)
PlayStatus: 0x01 (PLAYING)
Features: 0x0000000000b701e80200000000000000
CharsetID: 0x006a (UTF-8)
NameLength: 0x000c (12)
Name: SimplePlayer
---
profiles/audio/avrcp.c | 146 +++++++++++++++++++++++++++++++++++++++++++++++++
profiles/audio/avrcp.h | 1 +
profiles/audio/media.c | 8 +++
3 files changed, 155 insertions(+)
diff --git a/profiles/audio/avrcp.c b/profiles/audio/avrcp.c
index 76e89af..77b10f5 100644
--- a/profiles/audio/avrcp.c
+++ b/profiles/audio/avrcp.c
@@ -138,6 +138,11 @@
#define AVRCP_BROWSING_TIMEOUT 1
+#define SCOPE_MEDIA_PLAYER_LIST 0x00
+#define SCOPE_MEDIA_PLAYER_VFS 0x01
+#define SCOPE_SEARCH 0x02
+#define SCOPE_NOW_PLAYING 0x03
+
#if __BYTE_ORDER == __LITTLE_ENDIAN
struct avrcp_header {
@@ -176,6 +181,30 @@ struct avrcp_browsing_header {
} __attribute__ ((packed));
#define AVRCP_BROWSING_HEADER_LENGTH 3
+struct get_folder_items_rsp {
+ uint8_t status;
+ uint16_t uid_counter;
+ uint16_t num_items;
+ uint8_t data[0];
+} __attribute__ ((packed));
+
+struct folder_item {
+ uint8_t type;
+ uint16_t len;
+ uint8_t data[0];
+} __attribute__ ((packed));
+
+struct player_item {
+ uint16_t player_id;
+ uint8_t type;
+ uint32_t subtype;
+ uint8_t status;
+ uint8_t features[16];
+ uint16_t charset;
+ uint16_t namelen;
+ char name[0];
+} __attribute__ ((packed));
+
struct avrcp_server {
struct btd_adapter *adapter;
uint32_t tg_record_id;
@@ -261,6 +290,18 @@ struct control_pdu_handler {
static GSList *servers = NULL;
static unsigned int avctp_id = 0;
+/* Default feature bit mask for media player
+ * supporting Play, Stop, Pause, Rewind, fast forward,
+ * Forward, Backward, Vendor Unique, Basic Group Navigation,
+ * Advanced Control Player, Browsing, UIDs unique,
+ * OnlyBrowsableWhenAddressed
+ */
+static const uint8_t features[16] = {
+ 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0xB7, 0x01, 0xE8, 0x02, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00 };
+
/* Company IDs supported by this device */
static uint32_t company_ids[] = {
IEEEID_BTSIG,
@@ -1821,11 +1862,116 @@ err_metadata:
return AVRCP_HEADER_LENGTH + 1;
}
+static uint16_t player_get_uid_counter(struct avrcp_player *player)
+{
+ if (!player)
+ return 0x0000;
+
+ return player->uid_counter;
+}
+
+static void avrcp_handle_get_folder_items(struct avrcp *session,
+ struct avrcp_browsing_header *pdu,
+ uint8_t transaction)
+{
+ struct avrcp_player *player = session->target->player;
+ struct get_folder_items_rsp *rsp;
+ uint32_t start_item = 0;
+ uint32_t end_item = 0;
+ uint8_t scope;
+ uint8_t status = AVRCP_STATUS_SUCCESS;
+ const char *name = NULL;
+ GSList *l;
+
+ if (!pdu || ntohs(pdu->param_len) < 10)
+ goto failed;
+
+ scope = pdu->params[0];
+ start_item = bt_get_be32(&pdu->params[1]);
+ end_item = bt_get_be32(&pdu->params[5]);
+
+ DBG("scope 0x%02x start_item 0x%08x end_item 0x%08x", scope,
+ start_item, end_item);
+
+ if (end_item < start_item) {
+ status = AVRCP_STATUS_INVALID_PARAM;
+ goto failed;
+ }
+
+ switch (scope) {
+ case SCOPE_MEDIA_PLAYER_LIST:
+ rsp = (void *)pdu->params;
+ rsp->status = AVRCP_STATUS_SUCCESS;
+ rsp->uid_counter = htons(player_get_uid_counter(player));
+ rsp->num_items = 0;
+ pdu->param_len = sizeof(*rsp);
+
+ for (l = g_slist_nth(session->server->players, start_item);
+ l; l = g_slist_next(l)) {
+ struct avrcp_player *player = l->data;
+ struct folder_item *folder;
+ struct player_item *item;
+ uint16_t namelen;
+
+ if (rsp->num_items == (end_item - start_item) + 1)
+ break;
+
+ folder = (void *)&pdu->params[pdu->param_len];
+ folder->type = 0x01; /* Media Player */
+
+ pdu->param_len += sizeof(*folder);
+
+ item = (void *)folder->data;
+ item->player_id = htons(player->id);
+ item->type = 0x01; /* Audio */
+ item->subtype = htonl(0x01); /* Audio Book */
+ item->status = player_get_status(player);
+ memset(item->features, 0xff, 7);
+
+ memcpy(&item->features, &features, sizeof(features));
+ item->charset = htons(AVRCP_CHARSET_UTF8);
+
+ name = player->cb->get_player_name(player->user_data);
+ namelen = strlen(name);
+ item->namelen = htons(namelen);
+ memcpy(item->name, name, namelen);
+
+ folder->len = htons(sizeof(*item) + namelen);
+ pdu->param_len += sizeof(*item) + namelen;
+ rsp->num_items++;
+ }
+
+ /* If no player could be found respond with an error */
+ if (!rsp->num_items) {
+ status = AVRCP_STATUS_OUT_OF_BOUNDS;
+ goto failed;
+ }
+
+ rsp->num_items = htons(rsp->num_items);
+ pdu->param_len = htons(pdu->param_len);
+
+ break;
+ case SCOPE_MEDIA_PLAYER_VFS:
+ case SCOPE_SEARCH:
+ case SCOPE_NOW_PLAYING:
+ default:
+ status = AVRCP_STATUS_INVALID_PARAM;
+ goto failed;
+ }
+
+ return;
+
+failed:
+ pdu->params[0] = status;
+ pdu->param_len = htons(1);
+}
+
static struct browsing_pdu_handler {
uint8_t pdu_id;
void (*func) (struct avrcp *session, struct avrcp_browsing_header *pdu,
uint8_t transaction);
} browsing_handlers[] = {
+ { AVRCP_GET_FOLDER_ITEMS, avrcp_handle_get_folder_items },
{ },
};
diff --git a/profiles/audio/avrcp.h b/profiles/audio/avrcp.h
index a9aeb1a..fbd84ce 100644
--- a/profiles/audio/avrcp.h
+++ b/profiles/audio/avrcp.h
@@ -93,6 +93,7 @@ struct avrcp_player_cb {
const char *(*get_status) (void *user_data);
uint32_t (*get_position) (void *user_data);
uint32_t (*get_duration) (void *user_data);
+ const char *(*get_player_name) (void *user_data);
void (*set_volume) (uint8_t volume, struct btd_device *dev,
void *user_data);
bool (*play) (void *user_data);
diff --git a/profiles/audio/media.c b/profiles/audio/media.c
index 106b18a..ba7662e 100644
--- a/profiles/audio/media.c
+++ b/profiles/audio/media.c
@@ -1013,6 +1013,13 @@ static const char *get_setting(const char *key, void *user_data)
return g_hash_table_lookup(mp->settings, key);
}
+static const char *get_player_name(void *user_data)
+{
+ struct media_player *mp = user_data;
+
+ return mp->name;
+}
+
static void set_shuffle_setting(DBusMessageIter *iter, const char *value)
{
const char *key = "Shuffle";
@@ -1273,6 +1280,7 @@ static struct avrcp_player_cb player_cb = {
.get_position = get_position,
.get_duration = get_duration,
.get_status = get_status,
+ .get_player_name = get_player_name,
.set_volume = set_volume,
.play = play,
.stop = stop,
--
1.9.1
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