Added a radio to 2 channels playback .json example

This files is an example on how to make the softmixer
directly read from a capture device.
In that particular example, the capture is the radio
capture of the kingfisher board, and the playback is
the ak4613 codecs.
The stream rate and format must match the capture capablities.

Signed-off-by: Thierry Bultel <thierry.bultel@iot.bzh>

1 files changed, 167 insertions, 0 deletions

diff --git a/4a-hal-cfg-reference/hal-4a-m3ulcbkf-radio-to-2ch.json b/4a-hal-cfg-reference/hal-4a-m3ulcbkf-radio-to-2ch.json
new file mode 100644
index 0000000..d520d02
--- /dev/null
+++ b/4a-hal-cfg-reference/hal-4a-m3ulcbkf-radio-to-2ch.json
@@ -0,0 +1,167 @@
+{
+    "$schema": "http://iot.bzh/download/public/schema/json/ctl-schema.json",
+    "metadata": {
+        "uid": "/dev/snd/by-path/platform-sound@1",
+        "version": "0.9",
+        "api": "4a-hal-m3ulcb-radio-to-2ch",
+        "require": [ "alsacore", "smixer" ],
+        "info": "4a hal for Rcar M3 device",
+        "author": "Thierry Bultel",
+        "date": "2018-07-11"
+    },
+    "controls": [
+        {
+            "uid": "ping",
+            "info": "Ping hal",
+            "action": "api://4a-hal-manager#ping"
+        }
+    ],
+    "halmap": [
+        {
+            "uid": "agl-master-playback-volume",
+            "alsa": {
+                "name": "Digital Playback Volume1",
+                "value": 80
+            }
+        },
+        {
+            "uid": "agl-pcm-playback-volume",
+            "alsa": {
+                "name": "Digital Playback Volume1",
+                "value": 80
+            }
+        },
+        {
+            "uid": "agl-pcm-playback-switch",
+            "alsa": {
+                "name": "SRC Out Rate Switch",
+                "value": 1
+            }
+        },
+        {
+            "uid": "agl-capture-volume",
+            "alsa": {
+                "name": "DVC In Capture Volume"
+            }
+        }
+    ],
+    "halmixer": {
+        "uid": "rcar-m3",
+        "mixerapi": "smixer",
+        "ramps": [
+            {
+                "uid": "ramp-very-fast",
+                "delay": 50,
+                "up": 6,
+                "down": 10
+            },
+            {
+                "uid": "ramp-fast",
+                "delay": 50,
+                "up": 2,
+                "down": 10
+            },
+            {
+                "uid": "ramp-normal",
+                "delay": 50,
+                "up": 2,
+                "down": 4
+            },
+            {
+                "uid": "ramp-slow",
+                "delay": 50,
+                "up": 2,
+                "down": 2
+            },
+            {
+                "uid": "ramp-very-slow",
+                "delay": 100,
+                "up": 1,
+                "down": 1
+            }
+        ],
+        "playbacks" : [ 
+        {
+            "uid": "AK4613",
+            "path": "/dev/snd/by-path/platform-sound@1",
+            "params": {
+                "rate": 48000,
+                "format": "S24_LE"
+            },
+            "sink": {
+                "controls": {
+                    "volume": {
+                        "name": "DVC Out Playback Volume",
+                        "value": 81
+                    },
+                    "mute": {
+                        "name": "SRC Out Rate Switch"
+                    }
+                },
+                "channels": [
+                    {
+                        "uid": "front-right-m3",
+                        "port": 0
+                    },
+                    {
+                        "uid": "front-left-m3",
+                        "port": 1
+                    }
+                ]
+            }
+         }
+        ],
+        "captures": [
+            {
+                "uid": "radio",
+                "path": "/dev/snd/by-path/platform-sound@2",
+                "params": {
+
+                	"channels": 2
+            	},
+                "source": {
+                    "channels": [
+                        {
+                            "uid": "radio-right",
+                            "port": 0
+                        },
+                        {
+                            "uid": "radio-left",
+                            "port": 1
+                        }
+                    ]
+                }
+            }
+        ],
+        "zones": [
+            {
+                "uid": "stereo-2",
+                "sink": [
+                    {
+                        "target": "front-right-m3",
+                        "channel": 0
+                    },
+                    {
+                        "target": "front-left-m3",
+                        "channel": 1
+                    }
+                ]
+            }            
+        ],
+        "streams": [
+            {
+                "uid": "radio_stream",
+                "verb": "radio_stream",
+                "zone": "stereo-2",
+		"source" : "radio",
+                "volume": 40,
+                "mute": true,
+                "params": {
+		    "rate" : 48000,
+                    "format": "S16_LE",
+                    "channels": 2
+                }
+            }
+        ]
+    }
+}