FEAT: possibility to specify number of channels for playback

Oldes · Sep 20, 2023 · 8ab3a54 · 8ab3a54
1 parent 1374aeb
commit 8ab3a54
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Showing 4 changed files with 11 additions and 3 deletions.
diff --git a/README.md b/README.md
@@ -83,6 +83,8 @@ Retrive playback/capture device names
 Initialize a playback device
 * `index` `[integer!]`
 * `/pause` Don't start it automatically
+* `/channels` The number of channels to use for playback
+* `number` `[integer!]` When set to 0 the device's native channel count will be used
 
 #### `load` `:sound`
 Loads a file and returns sound's handle

diff --git a/src/miniaudio-commands.c b/src/miniaudio-commands.c
@@ -609,7 +609,7 @@ COMMAND cmd_init_playback(RXIFRM *frm, void *ctx) {
 	deviceConfig = ma_device_config_init(ma_device_type_playback);
 	deviceConfig.playback.pDeviceID = &pPlaybackDeviceInfos[iChosenDevice].id;
 	deviceConfig.playback.format    = gResourceManager.config.decodedFormat;
-	deviceConfig.playback.channels  = 0;
+	deviceConfig.playback.channels  = RXA_INT64(frm, 4);
 	deviceConfig.sampleRate         = gResourceManager.config.decodedSampleRate;
 	deviceConfig.dataCallback       = data_callback;
 	deviceConfig.pUserData          = engine;

diff --git a/src/miniaudio-rebol-extension.h b/src/miniaudio-rebol-extension.h
@@ -123,7 +123,7 @@ typedef int (*MyCommandPointer)(RXIFRM *frm, void *ctx);
 	"REBOL [Title: {Rebol MiniAudio Extension} Type: module Version: 0.11.18.1]\n"\
 	"init-words: command [args [block!] type [block!]]\n"\
 	"get-devices: command [\"Retrive playback/capture device names\"]\n"\
-	"init-playback: command [\"Initialize a playback device\" index [integer!] /pause \"Don't start it automatically\"]\n"\
+	"init-playback: command [\"Initialize a playback device\" index [integer!] /pause \"Don't start it automatically\" /channels \"The number of channels to use for playback\" number [integer!] {When set to 0 the device's native channel count will be used}]\n"\
 	"load: command [\"Loads a file and returns sound's handle\" sound [file!]]\n"\
 	"play: command [{Loads a file (if not already loaded) and starts playing it. Returns a sound handle.} sound [file! handle!] \"Source file or a ma-sound handle\" /stream \"Do not load the entire sound into memory\" /loop \"Turn looping on\" /volume vol [percent! decimal!] /fade in [integer! time!] \"PCM frames or time\"]\n"\
 	"pause: command [\"Pause sound playback\" sound [handle!]]\n"\

diff --git a/src/miniaudio-rebol-extension.r3 b/src/miniaudio-rebol-extension.r3
@@ -13,7 +13,13 @@ commands: [
 	;test:  ["..."]
 
 	get-devices:   ["Retrive playback/capture device names"]
-	init-playback: ["Initialize a playback device" index [integer!] /pause "Don't start it automatically"]
+	init-playback: [
+		"Initialize a playback device"
+		index [integer!]
+		/pause    "Don't start it automatically"
+		/channels "The number of channels to use for playback" 
+		 number [integer!] "When set to 0 the device's native channel count will be used"
+	]