Add video upload, extraction progress, and reusable analysis sources

clips/models.py

@@ -40,6 +40,33 @@ class Blob(models.Model):
         return f"{self.digest[:12]}… {self.size}B {self.media_type}"
 
 
+class Source(models.Model):
+    """An uploaded video, identified by its byte digest."""
+
+    id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
+    blob = models.OneToOneField(Blob, on_delete=models.PROTECT, related_name="video_source")
+    filename = models.CharField(max_length=255)
+    probe = models.JSONField(default=dict)
+    created = models.DateTimeField(auto_now_add=True)
+
+
+class Extraction(models.Model):
+    """One requested decode of a source into immutable footage."""
+
+    key = models.CharField(primary_key=True, max_length=71)
+    source = models.ForeignKey(Source, on_delete=models.CASCADE, related_name="extractions")
+    settings = models.JSONField(default=dict)
+    state = models.CharField(max_length=16, default="queued")
+    progress = models.PositiveIntegerField(default=0)
+    error = models.TextField(blank=True)
+    footage = models.ForeignKey(
+        "Footage", null=True, blank=True, on_delete=models.SET_NULL,
+        related_name="extractions",
+    )
+    created = models.DateTimeField(auto_now_add=True)
+    updated = models.DateTimeField(auto_now=True)
+
+
 class Footage(models.Model):
     """Tier 3: the frames and audio of one extraction, immutable.
 
@@ -108,9 +135,9 @@ class Analysis(models.Model):
     footage = models.ForeignKey(
         Footage, null=True, blank=True, on_delete=models.SET_NULL, related_name="analyses"
     )
-    artifact = models.ForeignKey(
-        Blob, null=True, blank=True, on_delete=models.SET_NULL, related_name="analysis_for",
-        help_text="the dense landmark track, once bake A is uploaded",
+    source_blocks = models.ManyToManyField(
+        "Block", blank=True, related_name="source_for",
+        help_text="pixel-dependent landmarks, detection mask and mouth crops",
     )
     created = models.DateTimeField(auto_now_add=True)