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From: Yauhen Kharuzhy <yauhen.kharuzhy@softeq.com>
To: linux-bluetooth@vger.kernel.org
Cc: Yauhen Kharuzhy <yauhen.kharuzhy@softeq.com>
Subject: [PATCH BlueZ] mcp: Implement Next Track and Previous Track commands
Date: Fri,  7 Jun 2024 15:15:22 +0300
Message-ID: <20240607121522.1255175-1-yauhen.kharuzhy@softeq.com>
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Add implementation of Next/Previous Track commands to audio/mcp profile
and shared/mcp.{c,h} code.
---
 profiles/audio/mcp.c | 18 ++++++++++++++++--
 src/shared/mcp.c     | 20 ++++++++++++++++++++
 src/shared/mcp.h     |  2 ++
 3 files changed, 38 insertions(+), 2 deletions(-)

diff --git a/profiles/audio/mcp.c b/profiles/audio/mcp.c
index b410b3d2a..8d1b7588e 100644
--- a/profiles/audio/mcp.c
+++ b/profiles/audio/mcp.c
@@ -224,13 +224,27 @@ static int ct_stop(struct media_player *mp, void *user_data)
 	return bt_mcp_stop(mcp);
 }
 
+static int ct_next(struct media_player *mp, void *user_data)
+{
+	struct bt_mcp *mcp = user_data;
+
+	return bt_mcp_next_track(mcp);
+}
+
+static int ct_previous(struct media_player *mp, void *user_data)
+{
+	struct bt_mcp *mcp = user_data;
+
+	return bt_mcp_previous_track(mcp);
+}
+
 static const struct media_player_callback ct_cbs = {
 	.set_setting	= NULL,
 	.play		= &ct_play,
 	.pause		= &ct_pause,
 	.stop		= &ct_stop,
-	.next		= NULL,
-	.previous	= NULL,
+	.next		= &ct_next,
+	.previous	= &ct_previous,
 	.fast_forward	= NULL,
 	.rewind		= NULL,
 	.press		= NULL,
diff --git a/src/shared/mcp.c b/src/shared/mcp.c
index b3726ebae..71fc2d151 100644
--- a/src/shared/mcp.c
+++ b/src/shared/mcp.c
@@ -628,6 +628,26 @@ unsigned int bt_mcp_stop(struct bt_mcp *mcp)
 	return mcp_send(mcp, BT_MCS_CMD_STOP);
 }
 
+unsigned int bt_mcp_next_track(struct bt_mcp *mcp)
+{
+	if (!(mcp->session.cp_op_supported & BT_MCS_CMD_NEXT_TRACK_SUPPORTED))
+		return -ENOTSUP;
+
+	DBG(mcp, "mcp %p", mcp);
+
+	return mcp_send(mcp, BT_MCS_CMD_NEXT_TRACK);
+}
+
+unsigned int bt_mcp_previous_track(struct bt_mcp *mcp)
+{
+	if (!(mcp->session.cp_op_supported & BT_MCS_CMD_PREV_TRACK_SUPPORTED))
+		return -ENOTSUP;
+
+	DBG(mcp, "mcp %p", mcp);
+
+	return mcp_send(mcp, BT_MCS_CMD_PREV_TRACK);
+}
+
 static void mcp_mp_set_player_name(struct bt_mcp *mcp, const uint8_t *value,
 					uint16_t length)
 {
diff --git a/src/shared/mcp.h b/src/shared/mcp.h
index a2cd6fc45..ee57ed4bf 100644
--- a/src/shared/mcp.h
+++ b/src/shared/mcp.h
@@ -59,3 +59,5 @@ void *bt_mcp_get_user_data(struct bt_mcp *mcp);
 unsigned int bt_mcp_play(struct bt_mcp *mcp);
 unsigned int bt_mcp_pause(struct bt_mcp *mcp);
 unsigned int bt_mcp_stop(struct bt_mcp *mcp);
+unsigned int bt_mcp_next_track(struct bt_mcp *mcp);
+unsigned int bt_mcp_previous_track(struct bt_mcp *mcp);
-- 
2.45.1