rust/bt-pacs: Expose AudioContexts

New ServerBuilder needs the client to provide available
and supported contexts to start.  Add them to the public API.

Test: cargo build
Bug: b/309977153
Change-Id: Ic23162506b80d78837b7ab9930f202c6ec8ee475
Reviewed-on: https://bluetooth-review.googlesource.com/c/bluetooth/+/2761
Reviewed-by: Dayeong Lee <dayeonglee@google.com>

rust/bt-pacs/src/lib.rs

diff --git a/rust/bt-pacs/src/lib.rs b/rust/bt-pacs/src/lib.rs
index b77a577..3e34f35 100644
--- a/rust/bt-pacs/src/lib.rs
+++ b/rust/bt-pacs/src/lib.rs
@@ -2,20 +2,22 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-use bt_common::core::ltv::LtValue;
+use bt_common::Uuid;
 use bt_common::core::CodecId;
+use bt_common::core::ltv::LtValue;
 use bt_common::generic_audio::codec_capabilities::CodecCapability;
 use bt_common::generic_audio::metadata_ltv::Metadata;
 use bt_common::generic_audio::{AudioLocation, ContextType};
 use bt_common::packet_encoding::{Decodable, Encodable};
-use bt_common::Uuid;
-use bt_gatt::{client::FromCharacteristic, Characteristic};
+use bt_gatt::{Characteristic, client::FromCharacteristic};
 
 use std::collections::HashSet;
 
 pub mod debug;
 pub mod server;
 
+pub use server::types::AudioContexts;
+
 /// UUID from Assigned Numbers section 3.4.
 pub const PACS_UUID: Uuid = Uuid::from_u16(0x1850);
 
@@ -460,12 +462,12 @@
     use super::*;
 
     use bt_common::{
-        generic_audio::codec_capabilities::{CodecCapabilityType, SamplingFrequency},
         Uuid,
+        generic_audio::codec_capabilities::{CodecCapabilityType, SamplingFrequency},
     };
     use bt_gatt::{
-        types::{AttributePermissions, Handle},
         Characteristic,
+        types::{AttributePermissions, Handle},
     };
 
     use pretty_assertions::assert_eq;

rust/bt-pacs/src/server.rs

diff --git a/rust/bt-pacs/src/server.rs b/rust/bt-pacs/src/server.rs
index 5531187..c279433 100644
--- a/rust/bt-pacs/src/server.rs
+++ b/rust/bt-pacs/src/server.rs
@@ -17,8 +17,10 @@
 //! // Define supported and available audio contexts for this PACS.
 //! let supported = AudioContexts::new(...);
 //! let available = AudioContexts::new(...);
-//! let pacs_server = ServerBuilder::new(supported,
-//! available).with_sources(...).with_sinks(...).build()?;
+//! let pacs_server = ServerBuilder::new()
+//!         .with_sources(...)
+//!         .with_sinks(...)
+//!         .build(supported, available)?;
 //!
 //! // Publish the server.
 //! pacs_server.publish(gatt_server).expect("publishes fine");
@@ -28,10 +30,10 @@
 //! }
 
 use bt_common::generic_audio::ContextType;
+use bt_gatt::Server as _;
 use bt_gatt::server::LocalService;
 use bt_gatt::server::{ReadResponder, ServiceDefinition, WriteResponder};
 use bt_gatt::types::{GattError, Handle};
-use bt_gatt::Server as _;
 use futures::task::{Poll, Waker};
 use futures::{Future, Stream};
 use pin_project::pin_project;
@@ -43,7 +45,7 @@
     SupportedAudioContexts,
 };
 
-mod types;
+pub(crate) mod types;
 use crate::server::types::*;
 
 #[pin_project(project = LocalServiceProj)]
@@ -394,10 +396,10 @@
 mod tests {
     use super::*;
 
-    use bt_common::core::{CodecId, CodingFormat};
-    use bt_common::generic_audio::codec_capabilities::*;
-    use bt_common::generic_audio::AudioLocation;
     use bt_common::PeerId;
+    use bt_common::core::{CodecId, CodingFormat};
+    use bt_common::generic_audio::AudioLocation;
+    use bt_common::generic_audio::codec_capabilities::*;
     use bt_gatt::server;
     use bt_gatt::test_utils::{FakeServer, FakeServerEvent, FakeTypes};
     use bt_gatt::types::ServiceKind;

rust/bt-pacs/src/server/types.rs

diff --git a/rust/bt-pacs/src/server/types.rs b/rust/bt-pacs/src/server/types.rs
index db45e52..a718502 100644
--- a/rust/bt-pacs/src/server/types.rs
+++ b/rust/bt-pacs/src/server/types.rs
@@ -4,11 +4,11 @@
 
 //! Define types and trait implementations specific to the PACS server.
 
+use bt_gatt::Characteristic;
 use bt_gatt::client::FromCharacteristic;
 use bt_gatt::types::{
     AttributePermissions, CharacteristicProperties, CharacteristicProperty, Handle, SecurityLevels,
 };
-use bt_gatt::Characteristic;
 
 use std::collections::HashSet;
 
@@ -132,7 +132,6 @@
 }
 
 impl AudioContexts {
-    #[cfg(test)]
     pub fn new(sink: HashSet<ContextType>, source: HashSet<ContextType>) -> Self {
         AudioContexts { sink, source }
     }