Add JACK sound multiplexer support

Author: Cuda-Chen

.github/workflows/main.yml

@@ -8,8 +8,9 @@ jobs:
     strategy:
       matrix:
         dependency:
-          - libpulse-dev
           - none
+          - libpulse-dev
+          - libjack-jackd2-dev
     steps:
     - name: checkout code
       uses: actions/checkout@v4
@@ -19,7 +20,9 @@ jobs:
             sudo apt-get install libasound2-dev libudev-dev
     - name: install sound multiplexer ${{ matrix.dependency }}
       if: matrix.dependency != 'none'
-      run: sudo apt-get install ${{ matrix.dependency }}
+      run: |
+            sudo apt-get update
+            sudo apt-get install ${{ matrix.dependency }}
     - name: default build
       run: make
       shell: bash

Makefile

@@ -85,6 +85,9 @@ ifeq ($(call has, VIRTIOSND), 1)
         # Check PulseAudio installation
         ifeq (0, $(call check-pa))
             LDFLAGS += -lpulse
+        else ifeq (0, $(call check-jack2))
+            $(warning Detect JACK)
+            LDFLAGS += -ljack
         endif
     endif
     ifeq ($(UNAME_S),Darwin)

mk/check-libs.mk

@@ -24,14 +24,27 @@ endef
 define create-ca-prog
 echo '\
 #include <CoreAudio/CoreAudio.h>\n\
-#include <AudioToolbox/AudioQueue.h>
+#include <AudioToolbox/AudioQueue.h>\n\
 int main(){\n\
     AudioQueueRef queue;\n\
     AudioQueueDispose(queue, TRUE);\n\
     return 0;\n\
 }\n'
 endef
 
+# Create a mininal jack2 program
+define create-jack2-prog
+echo '\
+#include <stdlib.h>\n\
+#include <jack/jack.h>\n\
+int main(){\n\
+	jack_default_audio_sample_t *signal;\n\
+	signal = (jack_default_audio_sample_t *)malloc(1024 * sizeof(jack_default_audio_sample_t));\n\
+	free(signal);\n\
+	return 0;\n\
+}\n'
+endef
+
 # Check ALSA installation
 define check-alsa
 $(shell $(call create-alsa-prog) | $(CC) -x c - -lasound -o /dev/null > /dev/null 2> /dev/null 
@@ -48,3 +61,9 @@ define check-coreaudio
 $(shell $(call create-ca-prog) | $(CC) -x c - -framework AudioToolbox -o /dev/null > /dev/null 2> /dev/null 
 	&& echo 0 || echo 1)
 endef
+
+# Check JACK (formally jack2) installation
+define check-jack2
+$(shell $(call create-jack2-prog) | $(CC) -x c - -ljack  -o /dev/null > /dev/null 2> /dev/null 
+	&& echo 0 || echo 1)
+endef