From: Rui Pedro Lopes <rlopes@ipb.pt>
To: bluez-devel@lists.sourceforge.net
Subject: [Bluez-devel] Some tests with the userland ALSA plugin for A2DP: problem with changing tracks
Date: Wed, 30 Aug 2006 10:07:30 +0100 [thread overview]
Message-ID: <44F55552.4050502@ipb.pt> (raw)
[-- Attachment #1.1.1: Type: text/plain, Size: 1341 bytes --]
Hi,
I've been experimenting with the user land ALSA plugin for A2DP from
bluetooth-alsa project on Sourceforge.
It works fine (tried it with xmms and rhythmbox through gstreamer-alsa)
but there is a problem when changing tracks. When a song ends and xmms
jumps to the next track on the playlist, the sound no longer arrives the
headphones. If I press Stop and the Play, it starts playing again.
I send in attach the log of the debug messages for this behavior
(current.log).
I then tried commenting the line for registering the close action like this:
static snd_pcm_ioplug_callback_t a2dp_callback = {
.start = a2dp_start,
.stop = a2dp_stop,
.pointer = a2dp_pointer,
.transfer = a2dp_transfer2,
//.close = a2dp_close,
.hw_params = a2dp_params,
.prepare = a2dp_prepare,
.drain = a2dp_drain,
.poll_descriptors_count = a2dp_descriptors_count,
.poll_descriptors = a2dp_descriptors,
.poll_revents = a2dp_poll,
};
It no longer fails when changing tracks. Apparently, it works
flawlessly. I also send the log for debug messages in attach (no_close.log).
Cheers,
/rp
[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1.1.2: current.log --]
[-- Type: text/x-log; name="current.log", Size: 5604 bytes --]
==== Starting xmms
Message: device: pcm.headphone
==== Pressing play
DEBUG: _snd_pcm_a2dp_open: name pcm.headphone mode 1
DEBUG: _snd_pcm_a2dp_open: bdaddr/dest is 00:0D:44:43:B7:01
DEBUG: a2dp_alloc: init
DEBUG: a2dp_connect: a2dp 0x825e1c8 (sk=0, control_sk=0)
DEBUG: connect_stream: Using address: 01:B7:43:44:0D:00
DEBUG: detect_a2dp: Found A2DP Sink
DEBUG: connect_stream: Found A2DP Sink at the destination
DEBUG: do_connect: Connected [imtu 672, omtu 672, flush_to 65535]
DEBUG: connect_stream: Sent the Stream End Point Discovery Command
DEBUG: connect_stream: Got a Stream End Point Discovery Response
DEBUG: connect_stream: received 1 capabilities
DEBUG: process_seid: SEID = 1
DEBUG: process_seid: Requested Capabilities for SEID = 1
DEBUG: process_seid: Got capabilities response
DEBUG: process_seid: Sent set configurations command
DEBUG: process_seid: Set configurations command accepted
DEBUG: process_seid: Sent open stream command
DEBUG: process_seid: Got open stream confirm
DEBUG: do_connect: Connected [imtu 672, omtu 678, flush_to 65535]
DEBUG: connect_stream: Sent stream start
DEBUG: connect_stream: Got start stream confirm
DEBUG: a2dp_constraint: TEST a2dp 0x825e1c8
DEBUG: a2dp_params: a2dp 0x825e1c8
DEBUG: a2dp_params: format S16_LE rate 44100 channels 2
DEBUG: a2dp_params: frame_bytes 4 period_bytes 8192 period_size 2048 buffer_size 4096
DEBUG: a2dp_prepare: a2dp 0x825e1c8
Listen thread running
Awaiting command
SBC Bandwidth = 27 kbps [27945 bps]
SBC Bandwidth = 26 kbps [26703 bps]
SBC Bandwidth = 26 kbps [27324 bps]
SBC Bandwidth = 26 kbps [26703 bps]
Awaiting command
SBC Bandwidth = 26 kbps [27324 bps]
SBC Bandwidth = 26 kbps [26703 bps]
SBC Bandwidth = 26 kbps [27324 bps]
SBC Bandwidth = 26 kbps [26703 bps]
SBC Bandwidth = 26 kbps [27324 bps]
Awaiting command
SBC Bandwidth = 26 kbps [26703 bps]
SBC Bandwidth = 26 kbps [27324 bps]
SBC Bandwidth = 26 kbps [26703 bps]
==== Pressing Stop
DEBUG: a2dp_stop: a2dp 0x825e1c8
DEBUG: a2dp_stop: Listen thread terminating
Thread in signal handler 14
Error while receiving -1 (errno=4:Interrupted system call)
listen_thread: ending perfeclty
DEBUG: a2dp_stop: Listen thread terminated
DEBUG: a2dp_stop: OK
DEBUG: a2dp_stop: a2dp 0x825e1c8
DEBUG: a2dp_stop: Listen thread terminating
DEBUG: a2dp_stop: Listen thread terminated
DEBUG: a2dp_stop: OK
DEBUG: a2dp_close: a2dp Destroying 0x825e1c8
DEBUG: a2dp_close: OK
==== Pressing Play
DEBUG: _snd_pcm_a2dp_open: name pcm.headphone mode 1
DEBUG: _snd_pcm_a2dp_open: bdaddr/dest is 00:0D:44:43:B7:01
DEBUG: a2dp_alloc: init
DEBUG: a2dp_connect: a2dp 0x823ff68 (sk=0, control_sk=0)
DEBUG: connect_stream: Using address: 01:B7:43:44:0D:00
DEBUG: detect_a2dp: Found A2DP Sink
DEBUG: connect_stream: Found A2DP Sink at the destination
DEBUG: do_connect: Connected [imtu 672, omtu 672, flush_to 65535]
DEBUG: connect_stream: Sent the Stream End Point Discovery Command
DEBUG: connect_stream: Got a Stream End Point Discovery Response
DEBUG: connect_stream: received 1 capabilities
DEBUG: process_seid: SEID = 1
DEBUG: process_seid: Requested Capabilities for SEID = 1
DEBUG: process_seid: Got capabilities response
DEBUG: process_seid: Sent set configurations command
DEBUG: process_seid: Set configurations command accepted
DEBUG: process_seid: Sent open stream command
DEBUG: process_seid: Got open stream confirm
DEBUG: do_connect: Connected [imtu 672, omtu 678, flush_to 65535]
DEBUG: connect_stream: Sent stream start
DEBUG: connect_stream: Got start stream confirm
DEBUG: a2dp_constraint: TEST a2dp 0x823ff68
DEBUG: a2dp_params: a2dp 0x823ff68
DEBUG: a2dp_params: format S16_LE rate 44100 channels 2
DEBUG: a2dp_params: frame_bytes 4 period_bytes 8192 period_size 2048 buffer_size 4096
DEBUG: a2dp_prepare: a2dp 0x823ff68
Listen thread running
Awaiting command
SBC Bandwidth = 19 kbps [19872 bps]
SBC Bandwidth = 27 kbps [27945 bps]
SBC Bandwidth = 26 kbps [27324 bps]
SBC Bandwidth = 26 kbps [26703 bps]
SBC Bandwidth = 26 kbps [27324 bps]
==== Pressing Next Track
DEBUG: a2dp_stop: a2dp 0x823ff68
DEBUG: a2dp_stop: Listen thread terminating
Thread in signal handler 14
Error while receiving -1 (errno=4:Interrupted system call)
listen_thread: ending perfeclty
DEBUG: a2dp_stop: Listen thread terminated
DEBUG: a2dp_stop: OK
DEBUG: a2dp_stop: a2dp 0x823ff68
DEBUG: a2dp_stop: Listen thread terminating
DEBUG: a2dp_stop: Listen thread terminated
DEBUG: a2dp_stop: OK
DEBUG: a2dp_close: a2dp Destroying 0x823ff68
DEBUG: a2dp_close: OK
DEBUG: _snd_pcm_a2dp_open: name pcm.headphone mode 1
DEBUG: _snd_pcm_a2dp_open: bdaddr/dest is 00:0D:44:43:B7:01
DEBUG: a2dp_constraint: TEST a2dp 0x823ff68
DEBUG: a2dp_params: a2dp 0x823ff68
DEBUG: a2dp_params: format S16_LE rate 44100 channels 2
DEBUG: a2dp_params: frame_bytes 4 period_bytes 8192 period_size 2048 buffer_size 4096
DEBUG: a2dp_prepare: a2dp 0x823ff68
SBC Bandwidth = 23 kbps [24219 bps]
SBC Bandwidth = 26 kbps [27324 bps]
SBC Bandwidth = 26 kbps [26703 bps]
SBC Bandwidth = 26 kbps [27324 bps]
SBC Bandwidth = 26 kbps [26703 bps]
SBC Bandwidth = 26 kbps [27324 bps]
------ no sound on the headphones ------
==== Terminating xmms
DEBUG: a2dp_stop: a2dp 0x823ff68
DEBUG: a2dp_stop: Listen thread terminating
DEBUG: a2dp_stop: Listen thread terminated
DEBUG: a2dp_stop: OK
DEBUG: a2dp_stop: a2dp 0x823ff68
DEBUG: a2dp_stop: Listen thread terminating
DEBUG: a2dp_stop: Listen thread terminated
DEBUG: a2dp_stop: OK
DEBUG: a2dp_close: a2dp Destroying 0x823ff68
DEBUG: a2dp_close: OK
[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1.1.3: no_close.log --]
[-- Type: text/x-log; name="no_close.log", Size: 4144 bytes --]
==== Starting xmms
Message: device: pcm.headphone
==== Pressing Play
DEBUG: _snd_pcm_a2dp_open: name pcm.headphone mode 1
DEBUG: _snd_pcm_a2dp_open: bdaddr/dest is 00:0D:44:43:B7:01
DEBUG: a2dp_alloc: init
DEBUG: a2dp_connect: a2dp 0x824ffc8 (sk=0, control_sk=0)
DEBUG: connect_stream: Using address: 01:B7:43:44:0D:00
DEBUG: detect_a2dp: Found A2DP Sink
DEBUG: connect_stream: Found A2DP Sink at the destination
DEBUG: do_connect: Connected [imtu 672, omtu 672, flush_to 65535]
DEBUG: connect_stream: Sent the Stream End Point Discovery Command
DEBUG: connect_stream: Got a Stream End Point Discovery Response
DEBUG: connect_stream: received 1 capabilities
DEBUG: process_seid: SEID = 1
DEBUG: process_seid: Requested Capabilities for SEID = 1
DEBUG: process_seid: Got capabilities response
DEBUG: process_seid: Sent set configurations command
DEBUG: process_seid: Set configurations command accepted
DEBUG: process_seid: Sent open stream command
DEBUG: process_seid: Got open stream confirm
DEBUG: do_connect: Connected [imtu 672, omtu 678, flush_to 65535]
DEBUG: connect_stream: Sent stream start
DEBUG: connect_stream: Got start stream confirm
DEBUG: a2dp_constraint: TEST a2dp 0x824ffc8
DEBUG: a2dp_params: a2dp 0x824ffc8
DEBUG: a2dp_params: format S16_LE rate 44100 channels 2
DEBUG: a2dp_params: frame_bytes 4 period_bytes 8192 period_size 2048 buffer_size 4096
DEBUG: a2dp_prepare: a2dp 0x824ffc8
Listen thread running
Awaiting command
SBC Bandwidth = 27 kbps [27945 bps]
SBC Bandwidth = 26 kbps [27324 bps]
SBC Bandwidth = 26 kbps [26703 bps]
SBC Bandwidth = 26 kbps [27324 bps]
Awaiting command
SBC Bandwidth = 26 kbps [26703 bps]
SBC Bandwidth = 26 kbps [27324 bps]
==== Pressing Stop
DEBUG: a2dp_stop: a2dp 0x824ffc8
DEBUG: a2dp_stop: Listen thread terminating
Thread in signal handler 14
Error while receiving -1 (errno=4:Interrupted system call)
listen_thread: ending perfeclty
DEBUG: a2dp_stop: Listen thread terminated
DEBUG: a2dp_stop: OK
DEBUG: a2dp_stop: a2dp 0x824ffc8
DEBUG: a2dp_stop: Listen thread terminating
DEBUG: a2dp_stop: Listen thread terminated
DEBUG: a2dp_stop: OK
==== Pressing Play
DEBUG: _snd_pcm_a2dp_open: name pcm.headphone mode 1
DEBUG: _snd_pcm_a2dp_open: bdaddr/dest is 00:0D:44:43:B7:01
DEBUG: a2dp_constraint: TEST a2dp 0x824ffc8
DEBUG: a2dp_params: a2dp 0x824ffc8
DEBUG: a2dp_params: format S16_LE rate 44100 channels 2
DEBUG: a2dp_params: frame_bytes 4 period_bytes 8192 period_size 2048 buffer_size 4096
DEBUG: a2dp_prepare: a2dp 0x824ffc8
SBC Bandwidth = 20 kbps [21114 bps]
SBC Bandwidth = 26 kbps [27324 bps]
SBC Bandwidth = 26 kbps [26703 bps]
SBC Bandwidth = 26 kbps [27324 bps]
SBC Bandwidth = 26 kbps [27324 bps]
SBC Bandwidth = 26 kbps [26703 bps]
SBC Bandwidth = 26 kbps [27324 bps]
==== Pressing Next Track
DEBUG: a2dp_stop: a2dp 0x824ffc8
DEBUG: a2dp_stop: Listen thread terminating
DEBUG: a2dp_stop: Listen thread terminated
DEBUG: a2dp_stop: OK
DEBUG: a2dp_stop: a2dp 0x824ffc8
DEBUG: a2dp_stop: Listen thread terminating
DEBUG: a2dp_stop: Listen thread terminated
DEBUG: a2dp_stop: OK
DEBUG: _snd_pcm_a2dp_open: name pcm.headphone mode 1
DEBUG: _snd_pcm_a2dp_open: bdaddr/dest is 00:0D:44:43:B7:01
DEBUG: a2dp_constraint: TEST a2dp 0x824ffc8
DEBUG: a2dp_params: a2dp 0x824ffc8
DEBUG: a2dp_params: format S16_LE rate 44100 channels 2
DEBUG: a2dp_params: frame_bytes 4 period_bytes 8192 period_size 2048 buffer_size 4096
DEBUG: a2dp_prepare: a2dp 0x824ffc8
SBC Bandwidth = 24 kbps [25461 bps]
SBC Bandwidth = 26 kbps [26703 bps]
SBC Bandwidth = 26 kbps [27324 bps]
SBC Bandwidth = 26 kbps [26703 bps]
SBC Bandwidth = 26 kbps [27324 bps]
SBC Bandwidth = 26 kbps [26703 bps]
SBC Bandwidth = 26 kbps [27324 bps]
------ There is sound, since the connection is not closed ------
==== Terminating xmms
DEBUG: a2dp_stop: a2dp 0x824ffc8
DEBUG: a2dp_stop: Listen thread terminating
DEBUG: a2dp_stop: Listen thread terminated
DEBUG: a2dp_stop: OK
DEBUG: a2dp_stop: a2dp 0x824ffc8
DEBUG: a2dp_stop: Listen thread terminating
DEBUG: a2dp_stop: Listen thread terminated
DEBUG: a2dp_stop: OK
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next reply other threads:[~2006-08-30 9:07 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-08-30 9:07 Rui Pedro Lopes [this message]
2006-08-30 9:33 ` [Bluez-devel] Some tests with the userland ALSA plugin for A2DP: problem with changing tracks Frédéric DALLEAU
2006-08-30 13:56 ` Rui Pedro Lopes
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