[chronojump] wecam getdevices Initial (untested) code for mac

[Xavier de Blas <xaviblas src gnome org>]

commit 683ca61ce758560cf0d0bb06716d39a23f0eadf3
Author: Xavier de Blas <xaviblas gmail com>
Date:   Fri Mar 29 16:33:41 2019 +0100

    wecam getdevices Initial (untested) code for mac

 src/webcamFfmpegDevices.cs | 72 +++++++++++++++++++++++++++++++++++++++++-----
 1 file changed, 65 insertions(+), 7 deletions(-)
---
diff --git a/src/webcamFfmpegDevices.cs b/src/webcamFfmpegDevices.cs
index 56162d2d..3d0180ae 100644
--- a/src/webcamFfmpegDevices.cs
+++ b/src/webcamFfmpegDevices.cs
@@ -30,6 +30,8 @@ public abstract class WebcamFfmpegGetDevices
        public abstract List<string> GetDevices();
 
        protected abstract List<string> createParameters();
+
+       protected abstract List<string> parse(string devicesOutput);
 }
 
 public class WebcamFfmpegGetDevicesLinux : WebcamFfmpegGetDevices
@@ -60,6 +62,11 @@ public class WebcamFfmpegGetDevicesLinux : WebcamFfmpegGetDevices
        {
                return new List<string>();
        }
+
+       protected override List<string> parse(string devicesOutput)
+       {
+               return new List<string>();
+       }
 }
 
 
@@ -71,10 +78,7 @@ public class WebcamFfmpegGetDevicesWindows : WebcamFfmpegGetDevices
 
        public override List<string> GetDevices()
        {
-               string executable = "ffmpeg";
-               if(UtilAll.GetOSEnum() == UtilAll.OperatingSystems.WINDOWS)
-                       executable = System.IO.Path.Combine(Util.GetPrefixDir(), "bin/ffmpeg.exe");
-
+               string executable = System.IO.Path.Combine(Util.GetPrefixDir(), "bin/ffmpeg.exe");
                List<string> parameters = createParameters();
 
                ExecuteProcess.Result execute_result = ExecuteProcess.run (executable, parameters, true, 
true);
@@ -130,7 +134,7 @@ public class WebcamFfmpegGetDevicesWindows : WebcamFfmpegGetDevices
                return parameters;
        }
 
-       private List<string> parse(string devicesOutput)
+       protected override List<string> parse(string devicesOutput)
        {
                LogB.Information("Called parse");
 
@@ -173,11 +177,65 @@ public class WebcamFfmpegGetDevicesMac : WebcamFfmpegGetDevices
 
        public override List<string> GetDevices()
        {
-               return new List<string>();
+               string executable = "ffmpeg";
+               List<string> parameters = createParameters();
+
+               ExecuteProcess.Result execute_result = ExecuteProcess.run (executable, parameters, true, 
true);
+
+               LogB.Information("---- stdout: ----");
+               LogB.Information(execute_result.stdout);
+               LogB.Information("---- stderr: ----");
+               LogB.Information(execute_result.stderr);
+               LogB.Information("-----------------");
+
+               if(! execute_result.success)
+               {
+                       /*
+                       LogB.Information("WebcamFfmpegGetDevicesMac stdout: " + execute_result.stdout);
+                       LogB.Information("WebcamFfmpegGetDevicesMac error: " + execute_result.stderr);
+                       */
+
+                       return new List<string>();
+               }
+               else
+                       return parse(execute_result.stdout);
        }
 
        protected override List<string> createParameters()
        {
-               return new List<string>();
+               //ffmpeg -f avfoundation -list_devices true -i ""
+               List<string> parameters = new List<string>();
+
+               int i = 0;
+               parameters.Insert (i ++, "-f");
+               parameters.Insert (i ++, "avfoundation");
+               parameters.Insert (i ++, "-list_devices");
+               parameters.Insert (i ++, "true");
+               parameters.Insert (i ++, "-i");
+               parameters.Insert (i ++, "\"\"");
+
+               return parameters;
+       }
+
+       protected override List<string> parse(string devicesOutput)
+       {
+               LogB.Information("Called parse");
+
+               /*
+                * break the big string in \n strings
+                * https://stackoverflow.com/a/1547483
+                */
+               string[] lines = devicesOutput.Split(
+                               new[] { Environment.NewLine },
+                               StringSplitOptions.None
+                               );
+
+               List<string> parsedList = new List<string>();
+               foreach(string l in lines)
+               {
+                       parsedList.Add(l);
+               }
+
+               return parsedList;
        }
 }