Added file exclusion filter for Flamenco.

A filter like "*.abc;*.mkv;*.mov" can be used to prevent certain files
from being copied to the job storage directory. Requires a Blender that is
bundled with BAM 1.1.7 or newer.

blender_cloud/flamenco/__init__.py

@@ -300,6 +300,8 @@ class FLAMENCO_OT_render(async_loop.AsyncModalOperatorMixin,
         outdir = Path(prefs.flamenco_job_file_path) / unique_dir
         outfile = outdir / filepath.name
 
+        exclusion_filter = prefs.flamenco_exclude_filter or None
+
         try:
             outdir.mkdir(parents=True)
         except Exception as ex:
@@ -309,7 +311,7 @@ class FLAMENCO_OT_render(async_loop.AsyncModalOperatorMixin,
             return None, []
 
         try:
-            missing_sources = await bam_interface.bam_copy(filepath, outfile)
+            missing_sources = await bam_interface.bam_copy(filepath, outfile, exclusion_filter)
         except bam_interface.CommandExecutionError as ex:
             self.log.exception('Unable to execute BAM pack')
             self.report({'ERROR'}, 'Unable to execute BAM pack: %s' % ex)

blender_cloud/flamenco/bam_interface.py

@@ -14,7 +14,8 @@ class CommandExecutionError(Exception):
     pass
 
 
-async def bam_copy(base_blendfile: Path, target_blendfile: Path) -> typing.List[Path]:
+async def bam_copy(base_blendfile: Path, target_blendfile: Path,
+                   exclusion_filter: str) -> typing.List[Path]:
     """Uses BAM to copy the given file and dependencies to the target blendfile.
 
     Due to the way blendfile_pack.py is programmed/structured, we cannot import it
@@ -41,6 +42,9 @@ async def bam_copy(base_blendfile: Path, target_blendfile: Path) -> typing.List[
         '--mode', 'FILE',
     ]
 
+    if exclusion_filter:
+        args.extend(['--exclude', exclusion_filter])
+
     cmd_to_log = ' '.join(shlex.quote(s) for s in args)
     log.info('Executing %s', cmd_to_log)