Promotes vc_test_inject_capture (mono-only, TEST-ONLY) to a public, stereo-capable production API and adds a symmetric PCM tap on the receive side. Enables ReplayKit (iOS), ScreenCaptureKit (macOS), bots, soundboards, and custom clients — all without a hardware audio device. Core C++: - voicecat.h: new vc_stream_feed_pcm, vc_pcm_sink_cb typedef, vc_set_pcm_sink; vc_test_inject_capture kept as deprecated alias - audio_engine: stereo-aware inject_capture (channels param + ring reset on channel-count change); atomic pcm_sink_ fired per decoded frame in on_playback; RemoteStream carries user_id/stream_id for RT-safe sink metadata; init_recv_stream takes user_id+stream_id - client.cpp: stream_feed_pcm / set_pcm_sink implementations; sync_remote_streams passes user_id/stream_id to init_recv_stream - voicecat.cpp: trampolines + channels=1/2 validation Tests: test_external_pcm (headless, 3 sub-tests: mono round-trip, stereo feed L≠R, sink metadata+disable). ctest 23/23. Swift: feedPcm / setPcmSink in VoiceCatClient.swift + 4 XCTest smoke tests (ExternalPcmTests.swift). C#: StreamFeedPcm / SetPcmSink in VoiceCatClient.cs + NativeMethods.cs (vc_stream_feed_pcm unsafe P/Invoke, VcPcmSinkCallback delegate, vc_set_pcm_sink via nint) + 4 xUnit smoke tests (ExternalPcmTests.cs). Docs: architecture.md §4 new subsection, voice.md §9 updated (macOS/iOS now reference vc_stream_feed_pcm), protocol.md §8 explicit no-protocol-change note, roadmap.md M5 entry. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
69 lines
2.8 KiB
Swift
69 lines
2.8 KiB
Swift
// ExternalPcmTests — Swift wrapper smoke tests for vc_stream_feed_pcm / vc_set_pcm_sink.
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//
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// These tests verify that the Swift API surface compiles, is callable, and returns expected
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// results at the C-ABI boundary — without requiring a live server or audio hardware.
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// Full end-to-end relay / decode verification is covered by tests/test_external_pcm.cpp
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// (C++ ctest), which runs headlessly on all platforms.
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import XCTest
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@testable import VoiceCatCore
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final class ExternalPcmTests: XCTestCase {
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// MARK: - feedPcm: API surface smoke
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/// Calling feedPcm without a connected client or active stream must return .invalidArg
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/// (not crash). Proves the Swift→C bridge compiles and handles the error path.
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func testFeedPcm_noActiveStream_returnsInvalidArg() {
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let client = VoiceCatClient(config: VoiceCatConfig(
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clientName: "ext-pcm-test",
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clientVersion: "0.1",
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logLevel: .off
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))
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let sine = [Int16](repeating: 0, count: 960)
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// Stream 0 doesn't exist — the core must return invalidArg, not crash.
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let result = client.feedPcm(streamId: 0, pcm: sine, samplesPerChannel: 960, channels: 1)
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XCTAssertEqual(result, .invalidArg)
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}
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/// Calling feedPcm with channels=3 (invalid) must return .invalidArg.
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func testFeedPcm_invalidChannels_returnsInvalidArg() {
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let client = VoiceCatClient(config: VoiceCatConfig(
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clientName: "ext-pcm-test",
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clientVersion: "0.1",
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logLevel: .off
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))
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let pcm = [Int16](repeating: 0, count: 960 * 3)
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let result = client.feedPcm(streamId: 0, pcm: pcm, samplesPerChannel: 960, channels: 3)
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XCTAssertEqual(result, .invalidArg)
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}
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// MARK: - setPcmSink: API surface smoke
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/// setPcmSink(nil) on a freshly-created client must succeed (nil = disable, which is the
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/// default state — a no-op that must still return .ok).
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func testSetPcmSink_nil_returnsOk() {
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let client = VoiceCatClient(config: VoiceCatConfig(
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clientName: "ext-pcm-test",
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clientVersion: "0.1",
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logLevel: .off
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))
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let result = client.setPcmSink(nil, user: nil)
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XCTAssertEqual(result, .ok)
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}
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/// Calling setPcmSink with a @convention(c) function and then immediately disabling it
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/// with nil must both succeed. Verifies the C-ABI function-pointer round-trip.
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func testSetPcmSink_enableThenDisable_bothSucceed() {
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let client = VoiceCatClient(config: VoiceCatConfig(
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clientName: "ext-pcm-test",
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clientVersion: "0.1",
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logLevel: .off
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))
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let mySink: vc_pcm_sink_cb = { _, _, _, _, _, _, _ in }
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XCTAssertEqual(client.setPcmSink(mySink, user: nil), .ok)
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XCTAssertEqual(client.setPcmSink(nil, user: nil), .ok)
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}
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}
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