From: Luiz Augusto von Dentz <luiz.von.dentz@xxxxxxxxx>
This adds support for GetFolderItems command via player callback.
---
profiles/audio/avrcp.c | 197 +++++++++++++++++++++++++++++++++++++++++++++++-
profiles/audio/player.h | 2 +
2 files changed, 195 insertions(+), 4 deletions(-)
diff --git a/profiles/audio/avrcp.c b/profiles/audio/avrcp.c
index 5477016..9b54ae9 100644
--- a/profiles/audio/avrcp.c
+++ b/profiles/audio/avrcp.c
@@ -177,14 +177,24 @@ struct pending_pdu {
uint16_t offset;
};
+struct pending_list_items {
+ GSList *items;
+ uint32_t start;
+ uint32_t end;
+};
+
struct avrcp_player {
struct avrcp_server *server;
GSList *sessions;
uint16_t id;
+ uint8_t scope;
+ uint64_t uid;
uint16_t uid_counter;
bool browsed;
uint8_t *features;
+ struct pending_list_items *p;
+
struct avrcp_player_cb *cb;
void *user_data;
GDestroyNotify destroy;
@@ -2013,6 +2023,158 @@ static const char *subtype_to_string(uint32_t subtype)
return "None";
}
+static struct media_item *parse_media_element(struct avrcp *session,
+ uint8_t *operands, uint16_t len)
+{
+ struct avrcp_player *player;
+ struct media_player *mp;
+ uint16_t namelen;
+ char name[255];
+ uint64_t uid;
+
+ if (len < 13)
+ return NULL;
+
+ uid = bt_get_be64(&operands[0]);
+
+ namelen = MIN(bt_get_be16(&operands[11]), sizeof(name) - 1);
+ if (namelen > 0) {
+ memcpy(name, &operands[13], namelen);
+ name[namelen] = '\0';
+ }
+
+ player = session->player;
+ mp = player->user_data;
+
+ return media_player_create_item(mp, name, PLAYER_ITEM_TYPE_AUDIO, uid);
+}
+
+static struct media_item *parse_media_folder(struct avrcp *session,
+ uint8_t *operands, uint16_t len)
+{
+ struct avrcp_player *player = session->player;
+ struct media_player *mp = player->user_data;
+ uint16_t namelen;
+ char name[255];
+ uint64_t uid;
+ uint8_t type;
+
+ if (len < 12)
+ return NULL;
+
+ uid = bt_get_be64(&operands[0]);
+ type = operands[9];
+
+ namelen = MIN(bt_get_be16(&operands[12]), sizeof(name) - 1);
+ if (namelen > 0) {
+ memcpy(name, &operands[14], namelen);
+ name[namelen] = '\0';
+ }
+
+ return media_player_create_folder(mp, name, type, uid);
+}
+
+static void avrcp_list_items(struct avrcp *session, uint32_t start,
+ uint32_t end);
+static gboolean avrcp_list_items_rsp(struct avctp *conn, uint8_t *operands,
+ size_t operand_count, void *user_data)
+{
+ struct avrcp_browsing_header *pdu = (void *) operands;
+ struct avrcp *session = user_data;
+ struct avrcp_player *player = session->player;
+ struct pending_list_items *p = player->p;
+ uint16_t count;
+ uint32_t items, total;
+ size_t i;
+
+ if (pdu->params[0] != AVRCP_STATUS_SUCCESS || operand_count < 5)
+ goto done;
+
+ count = bt_get_be16(&operands[6]);
+ if (count == 0)
+ goto done;
+
+ for (i = 8; count && i + 3 < operand_count; count--) {
+ struct media_item *item;
+ uint8_t type;
+ uint16_t len;
+
+ type = operands[i++];
+ len = bt_get_be16(&operands[i]);
+ i += 2;
+
+ if (type != 0x03 && type != 0x02) {
+ i += len;
+ continue;
+ }
+
+ if (i + len > operand_count) {
+ error("Invalid item length");
+ break;
+ }
+
+ if (type == 0x03)
+ item = parse_media_element(session, &operands[i], len);
+ else if (type == 0x02)
+ item = parse_media_folder(session, &operands[i], len);
+
+ if (item) {
+ if (g_slist_find(p->items, item))
+ goto done;
+ p->items = g_slist_append(p->items, item);
+ }
+
+ i += len;
+ }
+
+ items = g_slist_length(p->items);
+ total = p->end - p->start;
+ if (items < total) {
+ avrcp_list_items(session, p->start + items + 1, p->end);
+ return FALSE;
+ }
+
+done:
+ g_slist_free(p->items);
+ g_free(p);
+ player->p = NULL;
+
+ return FALSE;
+}
+
+static void avrcp_list_items(struct avrcp *session, uint32_t start,
+ uint32_t end)
+{
+ uint8_t buf[AVRCP_BROWSING_HEADER_LENGTH + 10 +
+ AVRCP_MEDIA_ATTRIBUTE_LAST * sizeof(uint32_t)];
+ struct avrcp_player *player = session->player;
+ struct avrcp_browsing_header *pdu = (void *) buf;
+ uint16_t length = AVRCP_BROWSING_HEADER_LENGTH + 10;
+ uint32_t attribute;
+
+ memset(buf, 0, sizeof(buf));
+
+ pdu->pdu_id = AVRCP_GET_FOLDER_ITEMS;
+ pdu->param_len = htons(10 + sizeof(uint32_t));
+
+ pdu->params[0] = player->scope;
+
+ bt_put_be32(start, &pdu->params[1]);
+ bt_put_be32(end, &pdu->params[5]);
+
+ pdu->params[9] = 1;
+
+ /* Only the title (0x01) is mandatory. This can be extended to
+ * support AVRCP_MEDIA_ATTRIBUTE_* attributes */
+ attribute = htonl(AVRCP_MEDIA_ATTRIBUTE_TITLE);
+ memcpy(&pdu->params[10], &attribute, sizeof(uint32_t));
+
+ length += sizeof(uint32_t);
+
+ avctp_send_browsing_req(session->conn, buf, length,
+ avrcp_list_items_rsp, session);
+}
+
static gboolean avrcp_set_browsed_player_rsp(struct avctp *conn,
uint8_t *operands,
size_t operand_count,
@@ -2270,6 +2432,33 @@ static int ct_rewind(struct media_player *mp, void *user_data)
return ct_press(player, AVC_REWIND);
}
+static int ct_list_items(struct media_player *mp, const char *name,
+ uint32_t start, uint32_t end, void *user_data)
+{
+ struct avrcp_player *player = user_data;
+ struct avrcp *session;
+ struct pending_list_items *p;
+
+ if (player->p != NULL)
+ return -EBUSY;
+
+ session = player->sessions->data;
+
+ if (g_str_has_prefix(name, "/NowPlaying"))
+ player->scope = 0x03;
+ else
+ player->scope = 0x01;
+
+ avrcp_list_items(session, start, end);
+
+ p = g_new0(struct pending_list_items, 1);
+ p->start = start;
+ p->end = end;
+ player->p = p;
+
+ return 0;
+}
+
static const struct media_player_callback ct_cbs = {
.set_setting = ct_set_setting,
.play = ct_play,
@@ -2279,6 +2468,7 @@ static const struct media_player_callback ct_cbs = {
.previous = ct_previous,
.fast_forward = ct_fast_forward,
.rewind = ct_rewind,
+ .list_items = ct_list_items,
};
static struct avrcp_player *create_ct_player(struct avrcp *session,
@@ -2495,11 +2685,10 @@ static void avrcp_status_changed(struct avrcp *session,
static void avrcp_track_changed(struct avrcp *session,
struct avrcp_header *pdu)
{
- uint64_t uid;
-
if (session->browsing_id) {
- uid = bt_get_be64(&pdu->params[1]);
- avrcp_get_item_attributes(session, uid);
+ struct avrcp_player *player = session->player;
+ player->uid = bt_get_be64(&pdu->params[1]);
+ avrcp_get_item_attributes(session, player->uid);
} else
avrcp_get_element_attributes(session);
}
diff --git a/profiles/audio/player.h b/profiles/audio/player.h
index 6e44308..e7a885e 100644
--- a/profiles/audio/player.h
+++ b/profiles/audio/player.h
@@ -54,6 +54,8 @@ struct media_player_callback {
int (*previous) (struct media_player *mp, void *user_data);
int (*fast_forward) (struct media_player *mp, void *user_data);
int (*rewind) (struct media_player *mp, void *user_data);
+ int (*list_items) (struct media_player *mp, const char *name,
+ uint32_t start, uint32_t end, void *user_data);
};
struct media_player *media_player_controller_create(const char *path,
--
1.8.1.4
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