Initial radio implementation

Notable changes:
- Add radio gRPC API protobuf definitation and generated files.
- Reworked existing single gRPC APIs library to split it into
  per-API libraries to avoid name collision issues.
- Add radio gRPC client class and associated radio state class
  and RiverPod providers.
- Split media controls and play list table classes into media
  player and radio specific versions to facilitate customization
  and wiring up their appropriate backends in a straightforward
  fashion.  Some potential rationalization of styling widgets
  may be done as a follow up to avoid some duplication.
- Added radio configuration and presets loading.  The presets
  will be populated with the contents of a radio-presets.yaml
  file from the configured location, the default location is
  the /etc/xdg/AGL/ics-homescreen directory.
- Implemented FM radio player against the radio gRPC API.
  For the sake of expediency, no attempt has been made to make
  the player able to handle AM band support.
- Reworked media page navigation state so that active player is
  restored when coming back to the page.  Logic has been added to
  start/stop the radio on navigating to or leaving the FM radio
  sub-page.  This will potentially be reworked before CES to work
  with the pause/stop button present on the other pages.
- Started pruning down global exports.dart a bit to remove files
  only used in a specific page/hierarchy, starting with media.

Bug-AGL: SPEC-5029

Change-Id: I1ae0aca4a7a8218e69e4286c863f01509a1cccb7
Signed-off-by: Scott Murray <scott.murray@konsulko.com>

1 files changed, 70 insertions, 0 deletions

diff --git a/protos/lib/src/generated/radio.pbenum.dart b/protos/lib/src/generated/radio.pbenum.dart
new file mode 100644
index 0000000..f22c535
--- /dev/null
+++ b/protos/lib/src/generated/radio.pbenum.dart
@@ -0,0 +1,70 @@
+//
+//  Generated code. Do not modify.
+//  source: radio.proto
+//
+// @dart = 2.12
+
+// ignore_for_file: annotate_overrides, camel_case_types, comment_references
+// ignore_for_file: constant_identifier_names, library_prefixes
+// ignore_for_file: non_constant_identifier_names, prefer_final_fields
+// ignore_for_file: unnecessary_import, unnecessary_this, unused_import
+
+import 'dart:core' as $core;
+
+import 'package:protobuf/protobuf.dart' as $pb;
+
+class Band extends $pb.ProtobufEnum {
+  static const Band BAND_UNSPECIFIED = Band._(0, _omitEnumNames ? '' : 'BAND_UNSPECIFIED');
+  static const Band BAND_AM = Band._(1, _omitEnumNames ? '' : 'BAND_AM');
+  static const Band BAND_FM = Band._(2, _omitEnumNames ? '' : 'BAND_FM');
+  static const Band BAND_DBS = Band._(3, _omitEnumNames ? '' : 'BAND_DBS');
+
+  static const $core.List<Band> values = <Band> [
+    BAND_UNSPECIFIED,
+    BAND_AM,
+    BAND_FM,
+    BAND_DBS,
+  ];
+
+  static final $core.Map<$core.int, Band> _byValue = $pb.ProtobufEnum.initByValue(values);
+  static Band? valueOf($core.int value) => _byValue[value];
+
+  const Band._($core.int v, $core.String n) : super(v, n);
+}
+
+class StereoMode extends $pb.ProtobufEnum {
+  static const StereoMode STEREO_MODE_UNSPECIFIED = StereoMode._(0, _omitEnumNames ? '' : 'STEREO_MODE_UNSPECIFIED');
+  static const StereoMode STEREO_MODE_MONO = StereoMode._(1, _omitEnumNames ? '' : 'STEREO_MODE_MONO');
+  static const StereoMode STEREO_MODE_STEREO = StereoMode._(2, _omitEnumNames ? '' : 'STEREO_MODE_STEREO');
+
+  static const $core.List<StereoMode> values = <StereoMode> [
+    STEREO_MODE_UNSPECIFIED,
+    STEREO_MODE_MONO,
+    STEREO_MODE_STEREO,
+  ];
+
+  static final $core.Map<$core.int, StereoMode> _byValue = $pb.ProtobufEnum.initByValue(values);
+  static StereoMode? valueOf($core.int value) => _byValue[value];
+
+  const StereoMode._($core.int v, $core.String n) : super(v, n);
+}
+
+class ScanDirection extends $pb.ProtobufEnum {
+  static const ScanDirection SCAN_DIRECTION_UNSPECIFIED = ScanDirection._(0, _omitEnumNames ? '' : 'SCAN_DIRECTION_UNSPECIFIED');
+  static const ScanDirection SCAN_DIRECTION_FORWARD = ScanDirection._(1, _omitEnumNames ? '' : 'SCAN_DIRECTION_FORWARD');
+  static const ScanDirection SCAN_DIRECTION_BACKWARD = ScanDirection._(2, _omitEnumNames ? '' : 'SCAN_DIRECTION_BACKWARD');
+
+  static const $core.List<ScanDirection> values = <ScanDirection> [
+    SCAN_DIRECTION_UNSPECIFIED,
+    SCAN_DIRECTION_FORWARD,
+    SCAN_DIRECTION_BACKWARD,
+  ];
+
+  static final $core.Map<$core.int, ScanDirection> _byValue = $pb.ProtobufEnum.initByValue(values);
+  static ScanDirection? valueOf($core.int value) => _byValue[value];
+
+  const ScanDirection._($core.int v, $core.String n) : super(v, n);
+}
+
+
+const _omitEnumNames = $core.bool.fromEnvironment('protobuf.omit_enum_names');