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Update module-bluetooth-device to the new ipc.

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This commit is contained in:
Luiz Augusto von Dentz 2008-12-17 17:19:22 -03:00
parent 5db081a898
commit 7323e1a0a8
3 changed files with 217 additions and 172 deletions
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190
src/modules/bluetooth/ipc.h
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@ -23,36 +23,36 @@
/*
Message sequence chart of streaming sequence for A2DP transport
Audio daemon User
on snd_pcm_open
<--BT_GETCAPABILITIES_REQ
Audio daemon User
on snd_pcm_open
<--BT_GET_CAPABILITIES_REQ
BT_GETCAPABILITIES_RSP-->
BT_GET_CAPABILITIES_RSP-->
on snd_pcm_hw_params
<--BT_SETCONFIGURATION_REQ
on snd_pcm_hw_params
<--BT_SETCONFIGURATION_REQ
BT_SETCONFIGURATION_RSP-->
BT_SET_CONFIGURATION_RSP-->
on snd_pcm_prepare
<--BT_STREAMSTART_REQ
on snd_pcm_prepare
<--BT_START_STREAM_REQ
<Moves to streaming state>
BT_STREAMSTART_RSP-->
BT_START_STREAM_RSP-->
BT_STREAMFD_IND -->
BT_NEW_STREAM_IND -->
< streams data >
..........
< streams data >
..........
on snd_pcm_drop/snd_pcm_drain
on snd_pcm_drop/snd_pcm_drain
<--BT_STREAMSTOP_REQ
<--BT_STOP_STREAM_REQ
<Moves to open state>
BT_STREAMSTOP_RSP-->
BT_STOP_STREAM_RSP-->
on IPC close or appl crash
on IPC close or appl crash
<Moves to idle>
*/
@ -71,43 +71,36 @@ extern "C" {
#include <sys/un.h>
#include <errno.h>
#define BT_AUDIO_IPC_PACKET_SIZE 128
#define BT_SUGGESTED_BUFFER_SIZE 128
#define BT_IPC_SOCKET_NAME "\0/org/bluez/audio"
/* Generic message header definition, except for RSP messages */
/* Generic message header definition, except for RESPONSE messages */
typedef struct {
uint8_t msg_type;
uint8_t type;
uint8_t name;
uint16_t length;
} __attribute__ ((packed)) bt_audio_msg_header_t;
/* Generic message header definition, for all RSP messages */
typedef struct {
bt_audio_msg_header_t msg_h;
uint8_t posix_errno;
} __attribute__ ((packed)) bt_audio_rsp_msg_header_t;
bt_audio_msg_header_t h;
uint8_t posix_errno;
} __attribute__ ((packed)) bt_audio_error_t;
/* Messages list */
#define BT_GETCAPABILITIES_REQ 0
#define BT_GETCAPABILITIES_RSP 1
/* Message types */
#define BT_REQUEST 0
#define BT_RESPONSE 1
#define BT_INDICATION 2
#define BT_ERROR 3
#define BT_SETCONFIGURATION_REQ 2
#define BT_SETCONFIGURATION_RSP 3
#define BT_STREAMSTART_REQ 4
#define BT_STREAMSTART_RSP 5
#define BT_STREAMSTOP_REQ 6
#define BT_STREAMSTOP_RSP 7
#define BT_STREAMSUSPEND_IND 8
#define BT_STREAMRESUME_IND 9
#define BT_CONTROL_REQ 10
#define BT_CONTROL_RSP 11
#define BT_CONTROL_IND 12
#define BT_STREAMFD_IND 13
/* BT_GETCAPABILITIES_REQ */
/* Messages names */
#define BT_GET_CAPABILITIES 0
#define BT_SET_CONFIGURATION 1
#define BT_NEW_STREAM 2
#define BT_START_STREAM 3
#define BT_STOP_STREAM 4
#define BT_SUSPEND_STREAM 5
#define BT_RESUME_STREAM 6
#define BT_CONTROL 7
#define BT_CAPABILITIES_TRANSPORT_A2DP 0
#define BT_CAPABILITIES_TRANSPORT_SCO 1
@ -119,19 +112,22 @@ typedef struct {
#define BT_FLAG_AUTOCONNECT 1
struct bt_getcapabilities_req {
struct bt_get_capabilities_req {
bt_audio_msg_header_t h;
char device[18]; /* Address of the remote Device */
uint8_t transport; /* Requested transport */
uint8_t flags; /* Requested flags */
} __attribute__ ((packed));
/* BT_GETCAPABILITIES_RSP */
/**
* SBC Codec parameters as per A2DP profile 1.0 § 4.3
*/
#define BT_A2DP_CODEC_SBC 0x00
#define BT_A2DP_CODEC_MPEG12 0x01
#define BT_A2DP_CODEC_MPEG24 0x02
#define BT_A2DP_CODEC_ATRAC 0x03
#define BT_SBC_SAMPLING_FREQ_16000 (1 << 3)
#define BT_SBC_SAMPLING_FREQ_32000 (1 << 2)
#define BT_SBC_SAMPLING_FREQ_44100 (1 << 1)
@ -164,7 +160,19 @@ struct bt_getcapabilities_req {
#define BT_MPEG_LAYER_2 (1 << 1)
#define BT_MPEG_LAYER_3 1
#define BT_HFP_CODEC_PCM 0x00
#define BT_PCM_FLAG_NREC 1
typedef struct {
uint8_t transport;
uint8_t type;
uint8_t length;
uint8_t data[0];
} __attribute__ ((packed)) codec_capabilities_t;
typedef struct {
codec_capabilities_t capability;
uint8_t channel_mode;
uint8_t frequency;
uint8_t allocation_method;
@ -175,6 +183,7 @@ typedef struct {
} __attribute__ ((packed)) sbc_capabilities_t;
typedef struct {
codec_capabilities_t capability;
uint8_t channel_mode;
uint8_t crc;
uint8_t layer;
@ -183,74 +192,64 @@ typedef struct {
uint16_t bitrate;
} __attribute__ ((packed)) mpeg_capabilities_t;
struct bt_getcapabilities_rsp {
bt_audio_rsp_msg_header_t rsp_h;
uint8_t transport; /* Granted transport */
sbc_capabilities_t sbc_capabilities; /* A2DP only */
mpeg_capabilities_t mpeg_capabilities; /* A2DP only */
uint16_t sampling_rate; /* SCO only */
} __attribute__ ((packed));
typedef struct {
codec_capabilities_t capability;
uint8_t flags;
uint16_t sampling_rate;
} __attribute__ ((packed)) pcm_capabilities_t;
/* BT_SETCONFIGURATION_REQ */
struct bt_setconfiguration_req {
struct bt_get_capabilities_rsp {
bt_audio_msg_header_t h;
char device[18]; /* Address of the remote Device */
uint8_t transport; /* Requested transport */
uint8_t access_mode; /* Requested access mode */
sbc_capabilities_t sbc_capabilities; /* A2DP only - only one of this field
and next one must be filled */
mpeg_capabilities_t mpeg_capabilities; /* A2DP only */
uint8_t data[0]; /* First codec_capabilities_t */
} __attribute__ ((packed));
/* BT_SETCONFIGURATION_RSP */
struct bt_setconfiguration_rsp {
bt_audio_rsp_msg_header_t rsp_h;
uint8_t transport; /* Granted transport */
uint8_t access_mode; /* Granted access mode */
uint16_t link_mtu; /* Max length that transport supports */
struct bt_set_configuration_req {
bt_audio_msg_header_t h;
char device[18]; /* Address of the remote Device */
uint8_t access_mode; /* Requested access mode */
codec_capabilities_t codec; /* Requested codec */
} __attribute__ ((packed));
struct bt_set_configuration_rsp {
bt_audio_msg_header_t h;
uint8_t transport; /* Granted transport */
uint8_t access_mode; /* Granted access mode */
uint16_t link_mtu; /* Max length that transport supports */
} __attribute__ ((packed));
/* BT_STREAMSTART_REQ */
#define BT_STREAM_ACCESS_READ 0
#define BT_STREAM_ACCESS_WRITE 1
#define BT_STREAM_ACCESS_READWRITE 2
struct bt_streamstart_req {
struct bt_start_stream_req {
bt_audio_msg_header_t h;
} __attribute__ ((packed));
/* BT_STREAMSTART_RSP */
struct bt_streamstart_rsp {
bt_audio_rsp_msg_header_t rsp_h;
struct bt_start_stream_rsp {
bt_audio_msg_header_t h;
} __attribute__ ((packed));
/* BT_STREAMFD_IND */
/* This message is followed by one byte of data containing the stream data fd
as ancilliary data */
struct bt_streamfd_ind {
struct bt_new_stream_ind {
bt_audio_msg_header_t h;
} __attribute__ ((packed));
/* BT_STREAMSTOP_REQ */
struct bt_streamstop_req {
struct bt_stop_stream_req {
bt_audio_msg_header_t h;
} __attribute__ ((packed));
/* BT_STREAMSTOP_RSP */
struct bt_streamstop_rsp {
bt_audio_rsp_msg_header_t rsp_h;
} __attribute__ ((packed));
/* BT_STREAMSUSPEND_IND */
struct bt_streamsuspend_ind {
struct bt_stop_stream_rsp {
bt_audio_msg_header_t h;
} __attribute__ ((packed));
/* BT_STREAMRESUME_IND */
struct bt_streamresume_ind {
struct bt_suspend_stream_ind {
bt_audio_msg_header_t h;
} __attribute__ ((packed));
/* BT_CONTROL_REQ */
struct bt_resume_stream_ind {
bt_audio_msg_header_t h;
} __attribute__ ((packed));
#define BT_CONTROL_KEY_POWER 0x40
#define BT_CONTROL_KEY_VOL_UP 0x41
@ -272,14 +271,12 @@ struct bt_control_req {
uint8_t key; /* Control Key */
} __attribute__ ((packed));
/* BT_CONTROL_RSP */
struct bt_control_rsp {
bt_audio_rsp_msg_header_t rsp_h;
uint8_t mode; /* Control Mode */
uint8_t key; /* Control Key */
bt_audio_msg_header_t h;
uint8_t mode; /* Control Mode */
uint8_t key; /* Control Key */
} __attribute__ ((packed));
/* BT_CONTROL_IND */
struct bt_control_ind {
bt_audio_msg_header_t h;
uint8_t mode; /* Control Mode */
@ -299,7 +296,10 @@ BT_STREAMFD_IND message is returned */
int bt_audio_service_get_data_fd(int sk);
/* Human readable message type string */
const char *bt_audio_strmsg(int type);
const char *bt_audio_strtype(uint8_t type);
/* Human readable message name string */
const char *bt_audio_strname(uint8_t name);
#ifdef __cplusplus
}