* [RFC : PATCH] - AVRCP 1.4 AbsoluteVolume
@ 2012-02-27 10:01 Vani-dineshbhai PATEL X
2012-02-27 10:10 ` Anurag GUPTA-1
2012-02-27 11:00 ` Luiz Augusto von Dentz
0 siblings, 2 replies; 3+ messages in thread
From: Vani-dineshbhai PATEL X @ 2012-02-27 10:01 UTC (permalink / raw)
To: linux-bluetooth; +Cc: Anurag GUPTA-1
Hi All,
I would like to propose this patch for the implementation of Absolute Volume functionality.
When CT sends SetAbsoluteVolume request, a DBus call is made to the player to change the value of its property - volume.
This value is saved in the media_player instance so that it can be sent for Interim response for VolumeChanged Notification.
Your comments shall be appreciated.
>From 9863d379f3f39faf28105f9ad222acef65765d3d Mon Sep 17 00:00:00 2001
From: Vani Patel <vani.patel@stericsson.com>
Date: Mon, 27 Feb 2012 12:53:53 +0530
Subject: [PATCH] Absolute Volume Functions Implemented.
---
audio/avrcp.c | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++
audio/avrcp.h | 3 +++
audio/media.c | 56 +++++++++++++++++++++++++++++++++++++++++++++++++++++++-
3 files changed, 108 insertions(+), 1 deletions(-)
diff --git a/audio/avrcp.c b/audio/avrcp.c
index c9ec314..70ebf8e 100644
--- a/audio/avrcp.c
+++ b/audio/avrcp.c
@@ -63,6 +63,8 @@
#define E_INVALID_PARAM 0x01
#define E_PARAM_NOT_FOUND 0x02
#define E_INTERNAL 0x03
+#define E_NO_ERR 0x04
+#define E_NO_AVAIL_PLAYER 0x15
/* Packet types */
#define AVRCP_PACKET_TYPE_SINGLE 0x00
@@ -85,10 +87,12 @@
#define AVRCP_REGISTER_NOTIFICATION 0x31
#define AVRCP_REQUEST_CONTINUING 0x40
#define AVRCP_ABORT_CONTINUING 0x41
+#define AVRCP_SET_ABSOLUTE_VOLUME 0x50
/* Capabilities for AVRCP_GET_CAPABILITIES pdu */
#define CAP_COMPANY_ID 0x02
#define CAP_EVENTS_SUPPORTED 0x03
+#define MAX_ABSOLUTE_VOLUME 255
enum battery_status {
BATTERY_STATUS_NORMAL = 0,
@@ -387,6 +391,10 @@ int avrcp_player_event(struct avrcp_player *player, uint8_t id, void *data)
case AVRCP_EVENT_TRACK_REACHED_START:
size = 1;
break;
+ case AVRCP_EVENT_VOLUME_CHANGED:
+ size = 2;
+ memcpy(&pdu->params[1], data, sizeof(uint8_t));
+ break;
default:
error("Unknown event %u", id);
return -EINVAL;
@@ -884,6 +892,7 @@ static uint8_t avrcp_handle_register_notification(struct avrcp_player *player,
{
uint16_t len = ntohs(pdu->params_len);
uint64_t uid;
+ uint8_t volume=0;
/*
* 1 byte for EventID, 4 bytes for Playback interval but the latest
@@ -909,6 +918,11 @@ static uint8_t avrcp_handle_register_notification(struct avrcp_player *player,
case AVRCP_EVENT_TRACK_REACHED_START:
len = 1;
break;
+ case AVRCP_EVENT_VOLUME_CHANGED:
+ len = 2;
+ volume = player->cb->get_volume(player->user_data);
+ memcpy(&pdu->params[1], &volume, sizeof(uint8_t));
+ break;
default:
/* All other events are not supported yet */
goto err;
@@ -994,6 +1008,40 @@ err:
return AVC_CTYPE_REJECTED;
}
+static uint8_t avrcp_set_absolute_volume(struct avrcp_player *player,
+ struct avrcp_header *pdu,
+ uint8_t transaction)
+{
+ uint16_t len = ntohs(pdu->params_len);
+ uint8_t abs_volume = 0;
+ if (len != 1){
+ pdu->params[0] = E_PARAM_NOT_FOUND;
+ DBG("Param not Found \n");
+ goto err;
+ }
+ /* if (NULL == addressed_player) {
+ status = E_NO_AVAIL_PLAYER;
+ goto err;
+ }
+ */ /*This shall be addressed once AddressedPlayer is implemented */
+
+ abs_volume = pdu->params[0];
+ if (abs_volume > MAX_ABSOLUTE_VOLUME){
+ pdu->params[0] = E_INVALID_PARAM;
+ goto err;
+ }
+
+ player->cb->set_volume(abs_volume, player->user_data);
+ pdu->params[0] = abs_volume;
+ pdu->params_len = htons(len);
+ return AVC_CTYPE_ACCEPTED;
+
+ err:
+ pdu->params_len = htons(1);
+ return AVC_CTYPE_REJECTED;
+
+}
static struct pdu_handler {
uint8_t pdu_id;
@@ -1030,6 +1078,8 @@ static struct pdu_handler {
avrcp_handle_request_continuing },
{ AVRCP_ABORT_CONTINUING, AVC_CTYPE_CONTROL,
avrcp_handle_abort_continuing },
+ { AVRCP_SET_ABSOLUTE_VOLUME, AVC_CTYPE_CONTROL,
+ avrcp_set_absolute_volume },
{ },
};
diff --git a/audio/avrcp.h b/audio/avrcp.h
index fb64f3b..1df6103 100644
--- a/audio/avrcp.h
+++ b/audio/avrcp.h
@@ -73,6 +73,7 @@
#define AVRCP_EVENT_TRACK_CHANGED 0x02
#define AVRCP_EVENT_TRACK_REACHED_END 0x03
#define AVRCP_EVENT_TRACK_REACHED_START 0x04
+#define AVRCP_EVENT_VOLUME_CHANGED 0x0d
#define AVRCP_EVENT_LAST AVRCP_EVENT_TRACK_REACHED_START
struct avrcp_player_cb {
@@ -83,6 +84,8 @@ struct avrcp_player_cb {
GList *(*list_metadata) (void *user_data);
uint8_t (*get_status) (void *user_data);
uint32_t (*get_position) (void *user_data);
+ void (*set_volume)(uint8_t volume, void *user_data);
+ uint8_t (*get_volume)(void *user_data);
};
int avrcp_register(DBusConnection *conn, const bdaddr_t *src, GKeyFile *config);
diff --git a/audio/media.c b/audio/media.c
index c0fd0c3..738adbf 100644
--- a/audio/media.c
+++ b/audio/media.c
@@ -102,6 +102,7 @@ struct media_player {
guint track_watch;
uint8_t status;
uint32_t position;
+ uint8_t volume;
GTimer *timer;
};
@@ -1255,6 +1256,36 @@ static uint32_t get_position(void *user_data)
return mp->position + sec * 1000 + msec;
}
+static uint8_t get_volume(void *user_data)
+{
+ struct media_player *mp = user_data;
+ return mp->volume;
+}
+
+static void set_volume(uint16_t volume, void *user_data)
+{
+ struct media_player *mp = user_data;
+ DBusMessage *msg;
+ DBusMessageIter iter, var;
+ const char *property = "InputGain";
+ msg = dbus_message_new_method_call(mp->sender, mp->path,
+ MEDIA_PLAYER_INTERFACE,
+ "SetProperty");
+ if (msg == NULL) {
+ DBG("Couldn't allocate D-Bus message");
+ return ;
+ }
+ 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_BYTE_AS_STRING,
+ &var);
+ dbus_message_iter_append_basic(&var, DBUS_TYPE_BYTE, &volume);
+ dbus_message_iter_close_container(&iter, &var);
+ g_dbus_send_message(mp->adapter->conn, msg);
+ return ;
+}
+
static struct avrcp_player_cb player_cb = {
.get_setting = get_setting,
.set_setting = set_setting,
@@ -1262,7 +1293,9 @@ static struct avrcp_player_cb player_cb = {
.get_uid = get_uid,
.get_metadata = get_metadata,
.get_position = get_position,
- .get_status = get_status
+ .get_status = get_status,
+ .set_volume = set_volume,
+ .get_volume = get_volume
};
static void media_player_exit(DBusConnection *connection, void *user_data)
@@ -1338,6 +1371,24 @@ static gboolean set_position(struct media_player *mp, DBusMessageIter *iter)
return TRUE;
}
+static gboolean set_media_volume(struct media_player *mp, DBusMessageIter *iter)
+{
+ uint8_t *value;
+ int val;
+ if (dbus_message_iter_get_arg_type(iter) != DBUS_TYPE_BYTE)
+ return FALSE;
+
+ dbus_message_iter_get_basic(iter, &value);
+
+ if (mp->volume == *value)
+ return TRUE;
+
+ mp->volume = *value;
+ avrcp_player_event(mp->player, AVRCP_EVENT_VOLUME_CHANGED, value);
+
+ return TRUE;
+}
+
static gboolean set_property(struct media_player *mp, const char *key,
DBusMessageIter *entry)
{
@@ -1355,6 +1406,9 @@ static gboolean set_property(struct media_player *mp, const char *key,
if (strcasecmp(key, "Position") == 0)
return set_position(mp, &var);
+
+ if (strcasecmp(key, "Volume") == 0)
+ return set_media_volume(mp, &var);
attr = attr_to_val(key);
if (attr < 0)
--
1.7.5.4
Vani
^ permalink raw reply related [flat|nested] 3+ messages in thread* RE: [RFC : PATCH] - AVRCP 1.4 AbsoluteVolume
2012-02-27 10:01 [RFC : PATCH] - AVRCP 1.4 AbsoluteVolume Vani-dineshbhai PATEL X
@ 2012-02-27 10:10 ` Anurag GUPTA-1
2012-02-27 11:00 ` Luiz Augusto von Dentz
1 sibling, 0 replies; 3+ messages in thread
From: Anurag GUPTA-1 @ 2012-02-27 10:10 UTC (permalink / raw)
To: Vani-dineshbhai PATEL X, linux-bluetooth
Hi Vani,
-----Original Message-----
From: Vani-dineshbhai PATEL X
Sent: Monday, February 27, 2012 3:32 PM
To: linux-bluetooth@vger.kernel.org
Cc: Anurag GUPTA-1
Subject: [RFC : PATCH] - AVRCP 1.4 AbsoluteVolume
Hi All,
I would like to propose this patch for the implementation of Absolute Volume functionality.
When CT sends SetAbsoluteVolume request, a DBus call is made to the player to change the value of its property - volume.
This value is saved in the media_player instance so that it can be sent for Interim response for VolumeChanged Notification.
Your comments shall be appreciated.
>From 9863d379f3f39faf28105f9ad222acef65765d3d Mon Sep 17 00:00:00 2001
From: Vani Patel <vani.patel@stericsson.com>
Date: Mon, 27 Feb 2012 12:53:53 +0530
Subject: [PATCH] Absolute Volume Functions Implemented.
---
audio/avrcp.c | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++
audio/avrcp.h | 3 +++
audio/media.c | 56 +++++++++++++++++++++++++++++++++++++++++++++++++++++++-
3 files changed, 108 insertions(+), 1 deletions(-)
diff --git a/audio/avrcp.c b/audio/avrcp.c index c9ec314..70ebf8e 100644
--- a/audio/avrcp.c
+++ b/audio/avrcp.c
@@ -63,6 +63,8 @@
#define E_INVALID_PARAM 0x01
#define E_PARAM_NOT_FOUND 0x02
#define E_INTERNAL 0x03
+#define E_NO_ERR 0x04
+#define E_NO_AVAIL_PLAYER 0x15
/* Packet types */
#define AVRCP_PACKET_TYPE_SINGLE 0x00
@@ -85,10 +87,12 @@
#define AVRCP_REGISTER_NOTIFICATION 0x31
#define AVRCP_REQUEST_CONTINUING 0x40
#define AVRCP_ABORT_CONTINUING 0x41
+#define AVRCP_SET_ABSOLUTE_VOLUME 0x50
/* Capabilities for AVRCP_GET_CAPABILITIES pdu */
#define CAP_COMPANY_ID 0x02
#define CAP_EVENTS_SUPPORTED 0x03
+#define MAX_ABSOLUTE_VOLUME 255
enum battery_status {
BATTERY_STATUS_NORMAL = 0,
@@ -387,6 +391,10 @@ int avrcp_player_event(struct avrcp_player *player, uint8_t id, void *data)
case AVRCP_EVENT_TRACK_REACHED_START:
size = 1;
break;
+ case AVRCP_EVENT_VOLUME_CHANGED:
+ size = 2;
+ memcpy(&pdu->params[1], data, sizeof(uint8_t));
+ break;
default:
error("Unknown event %u", id);
return -EINVAL;
@@ -884,6 +892,7 @@ static uint8_t avrcp_handle_register_notification(struct avrcp_player *player, {
uint16_t len = ntohs(pdu->params_len);
uint64_t uid;
+ uint8_t volume=0;
/*
* 1 byte for EventID, 4 bytes for Playback interval but the latest @@ -909,6 +918,11 @@ static uint8_t avrcp_handle_register_notification(struct avrcp_player *player,
case AVRCP_EVENT_TRACK_REACHED_START:
len = 1;
break;
+ case AVRCP_EVENT_VOLUME_CHANGED:
+ len = 2;
+ volume = player->cb->get_volume(player->user_data);
+ memcpy(&pdu->params[1], &volume, sizeof(uint8_t));
+ break;
default:
/* All other events are not supported yet */
goto err;
@@ -994,6 +1008,40 @@ err:
return AVC_CTYPE_REJECTED;
}
+static uint8_t avrcp_set_absolute_volume(struct avrcp_player *player,
+ struct avrcp_header *pdu,
+ uint8_t transaction)
+{
+ uint16_t len = ntohs(pdu->params_len);
+ uint8_t abs_volume = 0;
+ if (len != 1){
+ pdu->params[0] = E_PARAM_NOT_FOUND;
+ DBG("Param not Found \n");
+ goto err;
+ }
+ /* if (NULL == addressed_player) {
+ status = E_NO_AVAIL_PLAYER;
+ goto err;
+ }
+ */ /*This shall be addressed once AddressedPlayer is implemented */
You should remove unused code before pushing it, moreover do you have some variable named "addressed_player"
+
+ abs_volume = pdu->params[0];
+ if (abs_volume > MAX_ABSOLUTE_VOLUME){
+ pdu->params[0] = E_INVALID_PARAM;
+ goto err;
+ }
+
+ player->cb->set_volume(abs_volume, player->user_data);
+ pdu->params[0] = abs_volume;
+ pdu->params_len = htons(len);
+ return AVC_CTYPE_ACCEPTED;
+
+ err:
Label should start from the beginning of line.
+ pdu->params_len = htons(1);
+ return AVC_CTYPE_REJECTED;
+
+}
static struct pdu_handler {
uint8_t pdu_id;
@@ -1030,6 +1078,8 @@ static struct pdu_handler {
avrcp_handle_request_continuing },
{ AVRCP_ABORT_CONTINUING, AVC_CTYPE_CONTROL,
avrcp_handle_abort_continuing },
+ { AVRCP_SET_ABSOLUTE_VOLUME, AVC_CTYPE_CONTROL,
+ avrcp_set_absolute_volume },
{ },
};
diff --git a/audio/avrcp.h b/audio/avrcp.h index fb64f3b..1df6103 100644
--- a/audio/avrcp.h
+++ b/audio/avrcp.h
@@ -73,6 +73,7 @@
#define AVRCP_EVENT_TRACK_CHANGED 0x02
#define AVRCP_EVENT_TRACK_REACHED_END 0x03
#define AVRCP_EVENT_TRACK_REACHED_START 0x04
+#define AVRCP_EVENT_VOLUME_CHANGED 0x0d
#define AVRCP_EVENT_LAST AVRCP_EVENT_TRACK_REACHED_START
AVRCP_EVEN_LAST should be updated to AVRCP_EVENT_VOLUME_CHANGED
struct avrcp_player_cb {
@@ -83,6 +84,8 @@ struct avrcp_player_cb {
GList *(*list_metadata) (void *user_data);
uint8_t (*get_status) (void *user_data);
uint32_t (*get_position) (void *user_data);
+ void (*set_volume)(uint8_t volume, void *user_data);
+ uint8_t (*get_volume)(void *user_data);
};
int avrcp_register(DBusConnection *conn, const bdaddr_t *src, GKeyFile *config); diff --git a/audio/media.c b/audio/media.c index c0fd0c3..738adbf 100644
--- a/audio/media.c
+++ b/audio/media.c
@@ -102,6 +102,7 @@ struct media_player {
guint track_watch;
uint8_t status;
uint32_t position;
+ uint8_t volume;
GTimer *timer;
};
@@ -1255,6 +1256,36 @@ static uint32_t get_position(void *user_data)
return mp->position + sec * 1000 + msec; }
+static uint8_t get_volume(void *user_data) {
+ struct media_player *mp = user_data;
+ return mp->volume;
+}
+
+static void set_volume(uint16_t volume, void *user_data) {
+ struct media_player *mp = user_data;
+ DBusMessage *msg;
+ DBusMessageIter iter, var;
+ const char *property = "InputGain";
+ msg = dbus_message_new_method_call(mp->sender, mp->path,
+ MEDIA_PLAYER_INTERFACE,
+ "SetProperty");
+ if (msg == NULL) {
+ DBG("Couldn't allocate D-Bus message");
+ return ;
+ }
+ 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_BYTE_AS_STRING,
+ &var);
+ dbus_message_iter_append_basic(&var, DBUS_TYPE_BYTE, &volume);
+ dbus_message_iter_close_container(&iter, &var);
+ g_dbus_send_message(mp->adapter->conn, msg);
+ return ;
+}
+
static struct avrcp_player_cb player_cb = {
.get_setting = get_setting,
.set_setting = set_setting,
@@ -1262,7 +1293,9 @@ static struct avrcp_player_cb player_cb = {
.get_uid = get_uid,
.get_metadata = get_metadata,
.get_position = get_position,
- .get_status = get_status
+ .get_status = get_status,
+ .set_volume = set_volume,
+ .get_volume = get_volume
};
static void media_player_exit(DBusConnection *connection, void *user_data) @@ -1338,6 +1371,24 @@ static gboolean set_position(struct media_player *mp, DBusMessageIter *iter)
return TRUE;
}
+static gboolean set_media_volume(struct media_player *mp,
+DBusMessageIter *iter) {
Correct Minor indentation problem
+ uint8_t *value;
+ int val;
+ if (dbus_message_iter_get_arg_type(iter) != DBUS_TYPE_BYTE)
+ return FALSE;
+
+ dbus_message_iter_get_basic(iter, &value);
+
+ if (mp->volume == *value)
+ return TRUE;
+
+ mp->volume = *value;
+ avrcp_player_event(mp->player, AVRCP_EVENT_VOLUME_CHANGED, value);
+
+ return TRUE;
+}
+
static gboolean set_property(struct media_player *mp, const char *key,
DBusMessageIter *entry)
{
@@ -1355,6 +1406,9 @@ static gboolean set_property(struct media_player *mp, const char *key,
if (strcasecmp(key, "Position") == 0)
return set_position(mp, &var);
+
+ if (strcasecmp(key, "Volume") == 0)
+ return set_media_volume(mp, &var);
attr = attr_to_val(key);
if (attr < 0)
--
1.7.5.4
Vani
Anurag
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [RFC : PATCH] - AVRCP 1.4 AbsoluteVolume
2012-02-27 10:01 [RFC : PATCH] - AVRCP 1.4 AbsoluteVolume Vani-dineshbhai PATEL X
2012-02-27 10:10 ` Anurag GUPTA-1
@ 2012-02-27 11:00 ` Luiz Augusto von Dentz
1 sibling, 0 replies; 3+ messages in thread
From: Luiz Augusto von Dentz @ 2012-02-27 11:00 UTC (permalink / raw)
To: Vani-dineshbhai PATEL X; +Cc: linux-bluetooth, Anurag GUPTA-1
Hi,
On Mon, Feb 27, 2012 at 12:01 PM, Vani-dineshbhai PATEL X
<vani.patel@stericsson.com> wrote:
> Hi All,
>
> I would like to propose this patch for the implementation of Absolute Volume functionality.
> When CT sends SetAbsoluteVolume request, a DBus call is made to the player to change the value of its property - volume.
> This value is saved in the media_player instance so that it can be sent for Interim response for VolumeChanged Notification.
> Your comments shall be appreciated.
Please split the patch, if possible first introduce the handling on
avrcp.c and make it check if cb->set_volume != NULL then in a separate
patch you can add the changes to media.c. When sending patches to
userspace BlueZ please use the subject prefix e.g. PATCH BlueZ, you
can also make it permanent by editing .git/config in your local tree.
IMO the volume handling should be in MediaTransport not in
MediaPlayer, otherwise it is quite possible that the player will
change the stream volume and not just indicate which is what is
recommended, in that case you would have to find what transport(s)
matches the device and emit PropertyChanged on them.
Our architecture is a bit different than what AVRCP suggests, because
the A2DP stream may not be directly controlled by the player, it is
controlled by the MediaTransport, so in case of PulseAudio multiple
processes may be streaming and naturally the volume gain applies to
everyone of them not just the MediaPlayer owner.
--
Luiz Augusto von Dentz
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2012-02-27 11:00 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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2012-02-27 10:01 [RFC : PATCH] - AVRCP 1.4 AbsoluteVolume Vani-dineshbhai PATEL X
2012-02-27 10:10 ` Anurag GUPTA-1
2012-02-27 11:00 ` Luiz Augusto von Dentz
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