cli (call), frontends(tools/webrtc_models): Add source for stdin:

If data is piped in with `auto` source, a new `SourcesStdin` is used.

libervia/cli/cmd_call.py

@@ -22,13 +22,15 @@ from functools import partial
 import importlib
 import logging
 from typing import Any
+import sys
+import select
 
 
 from libervia.backend.core.i18n import _
 from libervia.backend.tools.common import data_format
 from libervia.cli.constants import Const as C
 from libervia.frontends.tools import jid
-from libervia.frontends.tools.webrtc_models import CallData, SourcesPipeline
+from libervia.frontends.tools.webrtc_models import CallData, SourcesPipeline, SourcesStdin
 
 from . import base
 
@@ -96,6 +98,8 @@ class Common(base.CommandBase):
             from libervia.frontends.tools.webrtc_models import SourcesTest
 
             kwargs["sources_data"] = SourcesTest()
+        elif self.args.sources == "auto" and not sys.stdin.isatty():
+            kwargs["sources_data"] = SourcesStdin()
         return kwargs
 
     async def start(self):

libervia/frontends/tools/webrtc_models.py

@@ -87,6 +87,10 @@ class SourcesPipeline(SourcesData):
     audio_properties: dict = Field(default_factory=lambda: {})
 
 
+class SourcesStdin(SourcesData):
+    """Sources from stdin with automatic format detection."""
+
+
 class SinksData(BaseModel):
     """Data for Sinks"""