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bluetooth: Modular API for A2DP codecs

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This patch introduce new modular API for bluetooth A2DP codecs. Its
benefits are:

* bluez5-util and module-bluez5-device does not contain any codec specific
  code, they are codec independent.

* For adding new A2DP codec it is needed just to adjust one table in
  a2dp-codec-util.c file. All codec specific functions are in separate
  codec file.

* Support for backchannel (microphone voice). Some A2DP codecs (like
  FastStream or aptX Low Latency) are bi-directional and can be used for
  both music playback and audio call.

* Support for more configurations per codec. This allows to implement low
  quality mode of some codec together with high quality.

Current SBC codec implementation was moved from bluez5-util and
module-bluez5-device to its own file and converted to this new A2DP API.
This commit is contained in:
Pali Rohár 2019-04-06 11:15:58 +02:00 • committed by Tanu Kaskinen
parent e8c4638f79
commit 106aa91477
8 changed files with 1127 additions and 622 deletions
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12
src/Makefile.am
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@ -2131,6 +2131,9 @@ module_bluetooth_discover_la_CFLAGS = $(AM_CFLAGS) -DPA_MODULE_NAME=module_bluet
libbluez5_util_la_SOURCES = \
modules/bluetooth/bluez5-util.c \
modules/bluetooth/bluez5-util.h \
modules/bluetooth/a2dp-codec-api.h \
modules/bluetooth/a2dp-codec-util.c \
modules/bluetooth/a2dp-codec-util.h \
modules/bluetooth/a2dp-codecs.h \
modules/bluetooth/rtp.h
if HAVE_BLUEZ_5_OFONO_HEADSET
@ -2145,6 +2148,11 @@ endif
libbluez5_util_la_LDFLAGS = -avoid-version
libbluez5_util_la_LIBADD = $(MODULE_LIBADD) $(DBUS_LIBS)
libbluez5_util_la_CFLAGS = $(AM_CFLAGS) $(DBUS_CFLAGS)
libbluez5_util_la_CPPFLAGS = $(AM_CPPFLAGS)
libbluez5_util_la_SOURCES += modules/bluetooth/a2dp-codec-sbc.c
libbluez5_util_la_LIBADD += $(SBC_LIBS)
libbluez5_util_la_CFLAGS += $(SBC_CFLAGS)
module_bluez5_discover_la_SOURCES = modules/bluetooth/module-bluez5-discover.c
module_bluez5_discover_la_LDFLAGS = $(MODULE_LDFLAGS)
@ -2153,8 +2161,8 @@ module_bluez5_discover_la_CFLAGS = $(AM_CFLAGS) $(DBUS_CFLAGS) -DPA_MODULE_NAME=
module_bluez5_device_la_SOURCES = modules/bluetooth/module-bluez5-device.c
module_bluez5_device_la_LDFLAGS = $(MODULE_LDFLAGS)
module_bluez5_device_la_LIBADD = $(MODULE_LIBADD) $(SBC_LIBS) libbluez5-util.la
module_bluez5_device_la_CFLAGS = $(AM_CFLAGS) $(SBC_CFLAGS) -DPA_MODULE_NAME=module_bluez5_device
module_bluez5_device_la_LIBADD = $(MODULE_LIBADD) libbluez5-util.la
module_bluez5_device_la_CFLAGS = $(AM_CFLAGS) -DPA_MODULE_NAME=module_bluez5_device
# Apple Airtunes/RAOP
module_raop_sink_la_SOURCES = modules/raop/module-raop-sink.c