add cropdetect stub

src/ffx/ffx.py

@@ -212,6 +212,41 @@ def unmux(ctx,
             ctx.obj['logger'].warning(f"Skipping File {sourcePath} ({ex})")
 
 
+@ffx.command()
+@click.pass_context
+
+@click.argument('paths', nargs=-1)
+@click.option('--nice', type=int, default=99, help='Niceness of started processes')
+@click.option('--cpu', type=int, default=0, help='Limit CPU for started processes to percent')
+def cropdetect(ctx,
+            paths,
+            label,
+            output_directory,
+            subtitles_only,
+            nice,
+            cpu):
+
+    existingSourcePaths = [p for p in paths if os.path.isfile(p)]
+    ctx.obj['logger'].debug(f"\nUnmuxing {len(existingSourcePaths)} files")
+
+    ctx.obj['resource_limits'] = {}
+    ctx.obj['resource_limits']['niceness'] = nice
+    ctx.obj['resource_limits']['cpu_percent'] = cpu
+
+    for sourcePath in existingSourcePaths:
+
+ 
+        try:
+
+            fp = FileProperties(ctx.obj, sourcePath)
+            cropParams = fp.findCropParams()
+
+            click.echo(cropParams)
+
+        except Exception as ex:
+            ctx.obj['logger'].warning(f"Skipping File {sourcePath} ({ex})")
+
+
 @ffx.command()
 @click.pass_context
 

src/ffx/file_properties.py

@@ -174,6 +174,69 @@ class FileProperties():
         return json.loads(ffprobeOutput)['streams']
 
 
+
+    def findCropParams(self):
+        """Returns ffprobe stream data as array with elements according to the following example      
+        {
+            "index": 4,
+            "codec_name": "hdmv_pgs_subtitle",
+            "codec_long_name": "HDMV Presentation Graphic Stream subtitles",
+            "codec_type": "subtitle",
+            "codec_tag_string": "[0][0][0][0]",
+            "codec_tag": "0x0000",
+            "r_frame_rate": "0/0",
+            "avg_frame_rate": "0/0",
+            "time_base": "1/1000",
+            "start_pts": 0,
+            "start_time": "0.000000",
+            "duration_ts": 1421035,
+            "duration": "1421.035000",
+            "disposition": {
+                "default": 1,
+                "dub": 0,
+                "original": 0,
+                "comment": 0,
+                "lyrics": 0,
+                "karaoke": 0,
+                "forced": 0,
+                "hearing_impaired": 0,
+                "visual_impaired": 0,
+                "clean_effects": 0,
+                "attached_pic": 0,
+                "timed_thumbnails": 0,
+                "non_diegetic": 0,
+                "captions": 0,
+                "descriptions": 0,
+                "metadata": 0,
+                "dependent": 0,
+                "still_image": 0
+            },
+            "tags": {
+                "language": "ger",
+                "title": "German Full"
+            }
+        }
+        """
+
+        # ffmpeg -i <input.file> -vf cropdetect -f null -
+        ffprobeOutput, ffprobeError, returnCode = executeProcess(["ffmpeg" "-i",
+                                                        self.__sourcePath,
+                                                        "-vf", "cropdetect",
+                                                        "-t", "180",
+                                                        "-f", "null", "-"
+                                                        ])
+
+        errorLines = ffprobeError.split('\n')
+
+        for el in errorLines:
+
+            print(el)
+
+
+        # return json.loads(ffprobeOutput)['streams']
+
+
+
     def getMediaDescriptor(self):
         return MediaDescriptor.fromFfprobe(self.context, self.getFormatData(), self.getStreamData())