sound stuff

clips/views.py

@@ -43,7 +43,7 @@ from django.views.decorators.http import require_http_methods
 
 from . import blobs, extraction
 from .consumers import broadcast
-from .models import Analysis, Block, Blob, Clip, Extraction, Footage, Leaf, Project, Revision, Source
+from .models import Analysis, Block, Blob, Clip, Extraction, Footage, Leaf, Project, Revision, Sound, Source
 
 KEY_LENGTH = 71  # "sha256:" + 64 hex
 
@@ -225,6 +225,41 @@ def sources(request):
         return JsonResponse({"error": str(exc)}, status=400)
 
 
+def _sound_json(row):
+    return {"id": str(row.id), "label": row.filename, "duration": row.duration,
+            "audio": f"/blob/{row.blob_id}"}
+
+
+@require_http_methods(["GET", "POST"])
+def sounds(request):
+    if request.method == "GET":
+        return JsonResponse({"sounds": [_sound_json(row)
+                                        for row in Sound.objects.order_by("-created")]})
+    upload = request.FILES.get("file")
+    if upload is None:
+        return JsonResponse({"error": "upload a sound as the file field"}, status=400)
+    try:
+        digest, size = blobs.write_stream(upload.chunks())
+        duration = extraction.probe_audio(blobs.path_for(digest))
+        blob, _ = Blob.objects.get_or_create(
+            digest=digest, defaults={"size": size,
+                                     "media_type": upload.content_type or "audio/mpeg"})
+        row, created = Sound.objects.get_or_create(
+            blob=blob, defaults={"filename": Path(upload.name).name[:255],
+                                 "duration": duration})
+        return JsonResponse(_sound_json(row), status=201 if created else 200)
+    except (ValueError, OSError) as exc:
+        return JsonResponse({"error": str(exc)}, status=400)
+
+
+@require_http_methods(["GET"])
+def sound_detail(request, sound_id):
+    try:
+        return JsonResponse(_sound_json(Sound.objects.get(id=sound_id)))
+    except Sound.DoesNotExist:
+        return JsonResponse({"error": "no such sound"}, status=404)
+
+
 def _extraction_json(row):
     return {"key": row.key, "source": str(row.source_id), "state": row.state,
             "progress": row.progress, "error": row.error,