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Add support for ALSA compressed offload

Browse source 
See
https://docs.kernel.org/sound/designs/compress-offload.html
https://github.com/alsa-project/tinycompress
This commit is contained in:
Sanchayan Maity 2022-09-20 15:13:16 +05:30 • committed by Wim Taymans
parent f3914e494c
commit 6a034cc398
7 changed files with 1212 additions and 2 deletions
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1142
spa/plugins/alsa/alsa-compressed-sink.c Normal file
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10
spa/plugins/alsa/alsa.c
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@ -22,6 +22,8 @@
* DEALINGS IN THE SOFTWARE.
*/
#include "config.h"
#include <errno.h>
#include <spa/support/plugin.h>
@ -33,6 +35,9 @@ extern const struct spa_handle_factory spa_alsa_udev_factory;
extern const struct spa_handle_factory spa_alsa_device_factory;
extern const struct spa_handle_factory spa_alsa_seq_bridge_factory;
extern const struct spa_handle_factory spa_alsa_acp_device_factory;
#ifdef HAVE_COMPRESSED_OFFLOAD
extern const struct spa_handle_factory spa_alsa_compressed_sink_factory;
#endif
struct spa_log_topic log_topic = SPA_LOG_TOPIC(0, "spa.alsa");
struct spa_log_topic *alsa_log_topic = &log_topic;
@ -62,6 +67,11 @@ int spa_handle_factory_enum(const struct spa_handle_factory **factory, uint32_t
case 5:
*factory = &spa_alsa_acp_device_factory;
break;
#ifdef HAVE_COMPRESSED_OFFLOAD
case 6:
*factory = &spa_alsa_compressed_sink_factory;
break;
#endif
default:
return 0;
}

9
spa/plugins/alsa/meson.build
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@ -1,6 +1,8 @@
subdir('acp')
subdir('mixer')
spa_alsa_dependencies = [ spa_dep, alsa_dep, libudev_dep, mathlib, epoll_shim_dep, libinotify_dep ]
spa_alsa_sources = ['alsa.c',
'alsa.h',
'alsa-udev.c',
@ -12,12 +14,17 @@ spa_alsa_sources = ['alsa.c',
'alsa-seq-bridge.c',
'alsa-seq.c']
if tinycompress_dep.found()
spa_alsa_sources += [ 'alsa-compressed-sink.c' ]
spa_alsa_dependencies += tinycompress_dep
endif
spa_alsa = shared_library(
'spa-alsa',
[ spa_alsa_sources ],
c_args : acp_c_args,
include_directories : [configinc],
dependencies : [ spa_dep, alsa_dep, libudev_dep, mathlib, epoll_shim_dep, libinotify_dep ],
dependencies : spa_alsa_dependencies,
link_with : [ acp_lib ],
install : true,
install_dir : spa_plugindir / 'alsa'