feat: First working pipewire endpoint

> uses `T_NOTIF_SPICE` experimental endpoint on bmsound-pw's side > latency should be on par with wasapi shared?
2023-10-09 01:55:17 +09:00
parent 32f4f1871d
commit 6c53848ea4
6 changed files with 360 additions and 121 deletions
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="MarkdownEnhProjectSettings">
+    <AnnotatorSettings targetHasSpaces="true" linkCaseMismatch="true" wikiCaseMismatch="true" wikiLinkHasDashes="true" notUnderWikiHome="true" targetNotWikiPageExt="true" notUnderSourceWikiHome="true" targetNameHasAnchor="true" targetPathHasAnchor="true" wikiLinkHasSlash="true" wikiLinkHasSubdir="true" wikiLinkHasOnlyAnchor="true" linkTargetsWikiHasExt="true" linkTargetsWikiHasBadExt="true" notUnderSameRepo="true" targetNotUnderVcs="false" linkNeedsExt="true" linkHasBadExt="true" linkTargetNeedsExt="true" linkTargetHasBadExt="true" wikiLinkNotInWiki="true" imageTargetNotInRaw="true" repoRelativeAcrossVcsRoots="true" multipleWikiTargetsMatch="true" unresolvedLinkReference="true" linkIsIgnored="true" anchorIsIgnored="true" anchorIsUnresolved="true" anchorLineReferenceIsUnresolved="true" anchorLineReferenceFormat="true" anchorHasDuplicates="true" abbreviationDuplicates="true" abbreviationNotUsed="true" attributeIdDuplicateDefinition="true" attributeIdNotUsed="true" footnoteDuplicateDefinition="true" footnoteUnresolved="true" footnoteDuplicates="true" footnoteNotUsed="true" macroDuplicateDefinition="true" macroUnresolved="true" macroDuplicates="true" macroNotUsed="true" referenceDuplicateDefinition="true" referenceUnresolved="true" referenceDuplicates="true" referenceNotUsed="true" referenceUnresolvedNumericId="true" enumRefDuplicateDefinition="true" enumRefUnresolved="true" enumRefDuplicates="true" enumRefNotUsed="true" enumRefLinkUnresolved="true" enumRefLinkDuplicates="true" simTocUpdateNeeded="true" simTocTitleSpaceNeeded="true" />
+    <HtmlExportSettings updateOnSave="false" parentDir="" targetDir="" cssDir="css" scriptDir="js" plainHtml="false" imageDir="" copyLinkedImages="false" imagePathType="0" targetPathType="2" targetExt="" useTargetExt="false" noCssNoScripts="false" useElementStyleAttribute="false" linkToExportedHtml="true" exportOnSettingsChange="true" regenerateOnProjectOpen="false" linkFormatType="HTTP_ABSOLUTE" />
+    <LinkMapSettings>
+      <textMaps />
+    </LinkMapSettings>
+  </component>
+</project>
@@ -0,0 +1,71 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="FlexmarkProjectSettings">
+    <FlexmarkHtmlSettings flexmarkSpecExampleRendering="0" flexmarkSpecExampleRenderHtml="false">
+      <flexmarkSectionLanguages>
+        <option name="1" value="Markdown" />
+        <option name="2" value="HTML" />
+        <option name="3" value="flexmark-ast:1" />
+      </flexmarkSectionLanguages>
+    </FlexmarkHtmlSettings>
+  </component>
+  <component name="MarkdownProjectSettings">
+    <PreviewSettings splitEditorLayout="SPLIT" splitEditorPreview="PREVIEW" useGrayscaleRendering="false" zoomFactor="1.0" maxImageWidth="0" synchronizePreviewPosition="true" highlightPreviewType="LINE" highlightFadeOut="5" highlightOnTyping="true" synchronizeSourcePosition="true" verticallyAlignSourceAndPreviewSyncPosition="true" showSearchHighlightsInPreview="true" showSelectionInPreview="true" lastLayoutSetsDefault="false">
+      <PanelProvider>
+        <provider providerId="com.vladsch.md.nav.editor.swing.html.panel" providerName="Default - Swing" />
+      </PanelProvider>
+    </PreviewSettings>
+    <ParserSettings gitHubSyntaxChange="false" correctedInvalidSettings="false" emojiShortcuts="1" emojiImages="0">
+      <PegdownExtensions>
+        <option name="ATXHEADERSPACE" value="true" />
+        <option name="FENCED_CODE_BLOCKS" value="true" />
+        <option name="INTELLIJ_DUMMY_IDENTIFIER" value="true" />
+        <option name="RELAXEDHRULES" value="true" />
+        <option name="STRIKETHROUGH" value="true" />
+        <option name="TABLES" value="true" />
+        <option name="TASKLISTITEMS" value="true" />
+      </PegdownExtensions>
+      <ParserOptions>
+        <option name="COMMONMARK_LISTS" value="true" />
+        <option name="EMOJI_SHORTCUTS" value="true" />
+        <option name="GFM_TABLE_RENDERING" value="true" />
+        <option name="PRODUCTION_SPEC_PARSER" value="true" />
+        <option name="SIM_TOC_BLANK_LINE_SPACER" value="true" />
+      </ParserOptions>
+    </ParserSettings>
+    <HtmlSettings headerTopEnabled="false" headerBottomEnabled="false" bodyTopEnabled="false" bodyBottomEnabled="false" addPageHeader="false" addAnchorLinks="false" anchorLinksWrapText="false" imageUriSerials="false" addDocTypeHtml="true" noParaTags="false" defaultUrlTitle="false" migratedPlantUml="true" migratedAnchorLinks="true" plantUmlConversion="0">
+      <GeneratorProvider>
+        <provider providerId="com.vladsch.md.nav.editor.text.html.generator" providerName="Unmodified HTML Generator" />
+      </GeneratorProvider>
+      <headerTop />
+      <headerBottom />
+      <bodyTop />
+      <bodyBottom />
+      <fencedCodeConversions>
+        <option name="c4plantuml" value="NONE" />
+        <option name="ditaa" value="NONE" />
+        <option name="erd" value="NONE" />
+        <option name="graphviz" value="NONE" />
+        <option name="latex" value="KATEX" />
+        <option name="math" value="KATEX" />
+        <option name="mermaid" value="NONE" />
+        <option name="nomnoml" value="NONE" />
+        <option name="plantuml" value="NONE" />
+        <option name="puml" value="NONE" />
+        <option name="svgbob" value="NONE" />
+        <option name="umlet" value="NONE" />
+        <option name="vega" value="NONE" />
+        <option name="vegalite" value="NONE" />
+        <option name="wavedrom" value="NONE" />
+      </fencedCodeConversions>
+    </HtmlSettings>
+    <CssSettings previewScheme="UI_SCHEME" cssUri="" isCssUriEnabled="false" isCssUriSerial="true" isCssTextEnabled="false" isDynamicPageWidth="true">
+      <StylesheetProvider>
+        <provider providerId="com.vladsch.md.nav.editor.text.html.css" providerName="No Stylesheet" />
+      </StylesheetProvider>
+      <ScriptProviders />
+      <cssText />
+      <cssUriHistory />
+    </CssSettings>
+  </component>
+</project>
@@ -2,6 +2,5 @@
 <project version="4">
  <component name="VcsDirectoryMappings">
    <mapping directory="" vcs="Git" />
-    <mapping directory="$PROJECT_DIR$/external/cmake-various" vcs="Git" />
  </component>
 </project>
@@ -573,7 +573,7 @@ set(RESOURCE_FILES build/manifest.manifest build/manifest64.rc build/icon.rc cfg
 add_executable(spicetools_spice64 ${SOURCE_FILES} ${RESOURCE_FILES})
 target_link_libraries(spicetools_spice64
        PUBLIC d3d9 ws2_32 version comctl32 shlwapi iphlpapi hid secur32 setupapi psapi winmm winscard
-        PRIVATE fmt-header-only discord-rpc imgui hash-library minhook openvr_api64 lua_static imm32 dwmapi)
+        PRIVATE fmt-header-only discord-rpc imgui hash-library minhook openvr_api64 lua_static imm32 dwmapi ntdll)
 set_target_properties(spicetools_spice64 PROPERTIES PREFIX "")
 set_target_properties(spicetools_spice64 PROPERTIES OUTPUT_NAME "spice64")
 target_compile_definitions(spicetools_spice64 PRIVATE SPICE64=1)
@@ -1,111 +1,288 @@
+#include <winternl.h>
 #include "pipewire.h"
 #include "hooks/audio/audio.h"
 #include "hooks/audio/backends/wasapi/audio_client.h"
 #include "util/libutils.h"
 #include "launcher/launcher.h"
+#include "hooks/audio/util.h"
+#include "hooks/audio/backends/wasapi/util.h"

-/* Imports (refer to bmsound-wine.dll.spec) */
-typedef void(*BmswClientInit_t)(const char*);

-const WAVEFORMATEXTENSIBLE &PipewireBackend::format() const noexcept {
+/*
+... ShareMode           : AUDCLNT_SHAREMODE_EXCLUSIVE <- backend to reimplement, THIS is the audio engine, GAME is client https://learn.microsoft.com/en-us/windows/win32/coreaudio/audclnt-streamflags-xxx-constants
+... StreamFlags         : AUDCLNT_STREAMFLAGS_EVENTCALLBACK | AUDCLNT_STREAMFLAGS_NOPERSIST <- first is the whole reason for relay_handle_ requirement, second flag not tested
+... hnsBufferDuration   : 10000 <- wasapi people inventing new time units, 1ms (since 1unit==100ns, 10000*0.0001ms)
+... hnsPeriodicity      : 10000 <- same as above (1ms)
+... nChannels           : 2 <- channel_count
+... nSamplesPerSec      : 44100 <- bitrate
+... nAvgBytesPerSec     : 176400 <- raw buffer size per second (bitrate * stride)(bytes)
+... nBlockAlign         : 4 <- stride (bytes)
+... wBitsPerSample      : 16 <- sample size (bits)
+... wValidBitsPerSample : 16 <- same as above
+... dwChannelMask       : SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT <- position config
+ _INFO: Code pipeline
+  INIT: on_is_format_supported()?->on_initialize()->on_set_event_handle()-:(LOOPx1):->on_start()
+  LOOP: if relay_handle_: on_get_buffer_size()->on_get_buffer()->..->on_release_buffer()
+  DEINIT: on_stop()
+
+ _REV: POSSIBLE ALTERNATIVES:
+  Check if the stream is driving. The stream needs to have the
+  * PW_STREAM_FLAG_DRIVER set. When the stream is driving,
+  * pw_stream_trigger_process() needs to be called when data is
+  * available (output) or needed (input). Since 0.3.34
+  bool pw_stream_is_driving(struct pw_stream *stream);
+ * */
+
+/* Imports/Exports (refer to bmsound-wine.dll.spec) */
+typedef void (*BmswExperimentalProfile_t)(int);
+typedef void *(*BmswClientCreate_t)(const char *, void *, void *);
+typedef int(*BmswClientStart_t)(void *);
+typedef int(*BmswClientStop_t)(void *);
+typedef int(*BmswClientDestroy_t)(void *);
+typedef unsigned char *(*BmswClientGetBuffer_t)(void *, uint32_t);
+typedef int(*BmswClientReleaseBuffer_t)(void *, uint32_t);
+typedef int(*BmswClientFormatSupported_t)(DWORD, DWORD, DWORD);
+typedef REFERENCE_TIME(*BmswClientWasapiPeriod_t)(void *);
+typedef void (*BmswClientUpdateCallback_t)(void *, void *, void *);
+static BmswExperimentalProfile_t BmswExperimentalProfile;
+static BmswClientCreate_t BmswClientCreate;
+static BmswClientStart_t BmswClientStart;
+static BmswClientStop_t BmswClientStop;
+static BmswClientDestroy_t BmswClientDestroy;
+static BmswClientGetBuffer_t BmswClientGetBuffer;
+static BmswClientReleaseBuffer_t BmswClientReleaseBuffer;
+static BmswClientFormatSupported_t BmswClientFormatSupported;
+static BmswClientWasapiPeriod_t BmswClientWasapiPeriod;
+static BmswClientUpdateCallback_t BmswClientUpdateCallback;
+static HMODULE bmsw_ = nullptr;
+enum profile_exp
+{
+    T_NONE = 0,
+    T_AUDIO_FORMAT,
+    T_NOTIF_CALLBACK,
+    T_NOTIF_SPICE,
+    T_TWIN_CURSOR,
+    T_SPOOFED_LOOP,
+    T_STATIC_SINE,
+    T_LAST
+};
+
+/* Audio init (unless specified otherwise, run once at start) */
+// Reports to game whether each requested audio format is available for device (first success return will be used)
+HRESULT PipewireBackend::on_is_format_supported(AUDCLNT_SHAREMODE *ShareMode, const WAVEFORMATEX *pFormat, WAVEFORMATEX **ppClosestMatch) noexcept
+{
+    // Format reporting and filtering
+    log_info("audio::pipewire", "{}", __FUNCTION__);
+    log_misc("audio::pipewire", "Checking backend support for {} channels, {} Hz, {}-bit",
+             pFormat->nChannels,
+             pFormat->nSamplesPerSec,
+             pFormat->wBitsPerSample);
+
+    // IIDX? will always request format that was last checked through this function
+    if (*ShareMode != AUDCLNT_SHAREMODE_EXCLUSIVE) return AUDCLNT_E_UNSUPPORTED_FORMAT;
+
+    // Request format support from real backend (only accepts 44.1 kHz, stereo, 16-bits per channel for now)
+    return BmswClientFormatSupported(pFormat->nSamplesPerSec, pFormat->nChannels, pFormat->wBitsPerSample) == 0 ? S_OK : AUDCLNT_E_UNSUPPORTED_FORMAT;
+}
+// Populate hnsPeriodicity, _INFO: runs before on_initialize, requires configured client stream data
+HRESULT PipewireBackend::on_get_device_period(REFERENCE_TIME *default_device_period, REFERENCE_TIME *minimum_device_period)
+{
+    log_info("audio::pipewire", "{}", __FUNCTION__);
+    if (client_)
+    {
+        REFERENCE_TIME ref_time = BmswClientWasapiPeriod(client_);
+        *default_device_period = ref_time;
+        *minimum_device_period = ref_time;
+    }
+
+    return S_OK;
+}
+// This expects to be run once on_is_format_supported() succeeds, initializes backend based on passed arguments (and updates them if needed)
+HRESULT PipewireBackend::on_initialize(AUDCLNT_SHAREMODE *ShareMode, DWORD *StreamFlags, REFERENCE_TIME *hnsBufferDuration, REFERENCE_TIME *hnsPeriodicity, const WAVEFORMATEX *pFormat, LPCGUID AudioSessionGuid) noexcept
+{
+    log_info("audio::pipewire", "{}", __FUNCTION__);
+
+    // Initialize pipewire client (without starting the thread)
+    client_ = BmswClientCreate(GAME_INSTANCE->title(), nullptr, nullptr);//(void *)callback_notify,this
+
+    if (!client_)
+    log_fatal("audio::pipewire", "Client could not be initialized");
+    log_info("audio::pipewire", "Client initialized: '{}'", fmt::ptr(client_));
+
+    // Adjust WASAPI configuration visible to game (passed arguments are populated and should match that of last on_is_format_supported call)
+    auto ref_time = BmswClientWasapiPeriod(client_); //_INFO: this affects reported latency (1:100ns)
+    *hnsBufferDuration = ref_time;
+    *hnsPeriodicity = ref_time;
+
+    //_TODO: Init info
+    log_info("audio::asio", "Device Info:");
+    log_info("audio::pipewire", "... hnsBufferDuration : {}", *hnsBufferDuration);
+    log_info("audio::pipewire", "... hnsPeriodicity    : {}", *hnsPeriodicity);
+
+    return S_OK;
+}
+// This takes ownership over shared event handle exclusive to AUDCLNT_STREAMFLAGS_EVENTCALLBACK _INFO: first loop iteration runs directly after this, before on_start() call
+HRESULT PipewireBackend::on_set_event_handle(HANDLE *event_handle)
+{
+    log_info("audio::pipewire", "{}", __FUNCTION__);
+    this->relay_handle_ = *event_handle; // take over WASAPI's owned handle pre-initialized by client
+    //BmswClientUpdateCallback(client_, (void *) 0, this->relay_handle_);
+    *event_handle = CreateEvent(nullptr, true, false, nullptr); // replace WASAPI's handle with always off handle
+
+    return S_OK;
+
+    ULONG ntbuf_size = sizeof(OBJECT_NAME_INFORMATION) + 1024;
+    char ntbuf[ntbuf_size];
+    OBJECT_NAME_INFORMATION *ntinfo = (OBJECT_NAME_INFORMATION *) ntbuf;
+    NTSTATUS status = NtQueryObject(*event_handle, ObjectNameInformation, ntinfo, ntbuf_size, &ntbuf_size);
+    if (NT_SUCCESS(status))
+    {
+        // possible to rename anonymous handle to access by name
+    }
+}
+HRESULT PipewireBackend::on_start() noexcept
+{
+    log_info("audio::pipewire", "{}", __FUNCTION__);
+    BmswClientStart(client_);
+    return S_OK;
+}
+PipewireBackend::PipewireBackend() : format_(hooks::audio::FORMAT), client_(nullptr)
+{
+    log_info("audio::pipewire", "{}", __FUNCTION__);
+
+    // Initialize bmsound-wine.dll once
+    if (bmsw_) return;
+    if ((bmsw_ = libutils::try_library(MODULE_PATH / "bmsound-wine.dll")))
+    {
+        BmswExperimentalProfile = (BmswExperimentalProfile_t) GetProcAddress(bmsw_, "BmswExperimentalProfile");
+        BmswClientCreate = (BmswClientCreate_t) GetProcAddress(bmsw_, "BmswClientCreate");
+        BmswClientStart = (BmswClientStart_t) GetProcAddress(bmsw_, "BmswClientStart");
+        BmswClientStop = (BmswClientStop_t) GetProcAddress(bmsw_, "BmswClientStop");
+        BmswClientDestroy = (BmswClientDestroy_t) GetProcAddress(bmsw_, "BmswClientDestroy");
+        BmswClientGetBuffer = (BmswClientGetBuffer_t) GetProcAddress(bmsw_, "BmswClientGetBuffer");
+        BmswClientReleaseBuffer = (BmswClientReleaseBuffer_t) GetProcAddress(bmsw_, "BmswClientReleaseBuffer");
+        BmswClientFormatSupported = (BmswClientFormatSupported_t) GetProcAddress(bmsw_, "BmswClientFormatSupported");
+        BmswClientWasapiPeriod = (BmswClientWasapiPeriod_t) GetProcAddress(bmsw_, "BmswClientWasapiPeriod");
+        BmswClientUpdateCallback = (BmswClientUpdateCallback_t) GetProcAddress(bmsw_, "BmswClientUpdateCallback");
+
+        // Switch library to specific test API
+        BmswExperimentalProfile(T_NOTIF_SPICE);
+
+        return;
+    }
+    log_fatal("audio::pipewire", "Library not found: '{}'", (MODULE_PATH / "bmsound-wine.dll").string());
+}
+
+/* Audio callback loop (reacts to state of relay_handle_, most likely separate thread */
+// _REV: Synchronizing client and backend with nanotime may be necessary (bmsound-pw endpoint dependant)
+inline static void callback_notify(void *self)
+{
+    //log_info("audio::pipewire", "{}", __FUNCTION__);
+    auto *self_ = (PipewireBackend *) self;
+    //std::this_thread::sleep_for(std::chrono::nanoseconds(10 * 1000 * 1000 - 227));
+    if (!SetEvent(self_->relay_handle_)) // has to be called for game-side audio loop to continue
+    {
+        DWORD last_error = GetLastError();
+
+        log_warning("audio::asio", "AsioBackend::buffer_switch: SetEvent failed: {} ({})",
+                    last_error,
+                    std::system_category().message(last_error));
+    }
+}
+// Amount in frames of data we may handle at once (which should always end up being what gets send by client, unless overrun happens)
+HRESULT PipewireBackend::on_get_buffer_size(uint32_t *buffer_frames) noexcept
+{
+    static int iterc = -1;
+    if (iterc == -1)
+    {
+        log_info("audio::pipewire", "{}, frames: {} FIRST TIME", __FUNCTION__, *buffer_frames);
+    }
+    iterc++;
+    if (iterc > 999999)
+    {
+        log_info("audio::pipewire", "on_get_buffer({}), frames: {}", iterc, *buffer_frames);
+        iterc = 0;
+    }
+
+    *buffer_frames = 411;
+
+    return S_OK;
+}
+// Wants a raw stream buffer to be assigned into *ppData, this stream will have x amount of sound frames stored into it by a client and assumes exclusive access until next on_release_buffer
+HRESULT PipewireBackend::on_get_buffer(uint32_t num_frames_requested, BYTE **ppData)
+{
+    static int iterc = -1;
+    if (iterc == -1)
+    {
+        log_info("audio::pipewire", "{}, frames: {} FIRST TIME", __FUNCTION__, num_frames_requested);
+    }
+    iterc++;
+    if (iterc > 999999)
+    {
+        log_info("audio::pipewire", "on_get_buffer({}), frames: {}", iterc, num_frames_requested);
+        iterc = 0;
+    }
+
+    *ppData = BmswClientGetBuffer(client_, num_frames_requested);
+
+    return S_OK;
+}
+// This releases access to buffer from last on_get_buffer and implies x amount of frames being valid data to be streamed
+HRESULT PipewireBackend::on_release_buffer(uint32_t num_frames_written, DWORD dwFlags)
+{
+    static int iterc = -1;
+    if (iterc == -1)
+    {
+        log_info("audio::pipewire", "{}, frames: {} FIRST TIME", __FUNCTION__, num_frames_written);
+    }
+    iterc++;
+    if (iterc > 999999)
+    {
+        log_info("audio::pipewire", "on_release_buffer({}), frames: {}", iterc, num_frames_written);
+        iterc = 0;
+    }
+
+    BmswClientReleaseBuffer(client_, num_frames_written);
+    callback_notify(this);
+
+    return S_OK;
+}
+
+/* Audio deinit (unless specified otherwise, run once at termination) */
+HRESULT PipewireBackend::on_stop() noexcept
+{
+    log_info("audio::pipewire", "{}", __FUNCTION__);
+    BmswClientStop(client_);
+    return S_OK;
+}
+PipewireBackend::~PipewireBackend()
+{
+    log_info("audio::pipewire", "~PipewireBackend");
+    if (client_) BmswClientDestroy(client_);
+}
+
+/* Unsorted (unknown callers, should be considered as unimplemented/untested) *///_BUG: does this need implementation?
+const WAVEFORMATEXTENSIBLE &PipewireBackend::format() const noexcept
+{
+    log_info("audio::pipewire", "{}", __FUNCTION__);
    return format_;
 }
-
-HRESULT PipewireBackend::on_initialize(
-    AUDCLNT_SHAREMODE *ShareMode,
-    DWORD *StreamFlags,
-    REFERENCE_TIME *hnsBufferDuration,
-    REFERENCE_TIME *hnsPeriodicity,
-    const WAVEFORMATEX *pFormat,
-    LPCGUID AudioSessionGuid) noexcept
+HRESULT PipewireBackend::on_get_stream_latency(REFERENCE_TIME *latency) noexcept
 {
-    log_info("audio::pipewire", "on_initialize");
-
-    // WASAPI init
-    *ShareMode = AUDCLNT_SHAREMODE_SHARED;
-    *StreamFlags = AUDCLNT_STREAMFLAGS_EVENTCALLBACK |
-            AUDCLNT_STREAMFLAGS_RATEADJUST |
-            AUDCLNT_STREAMFLAGS_AUTOCONVERTPCM |
-            AUDCLNT_STREAMFLAGS_SRC_DEFAULT_QUALITY;
-    *hnsBufferDuration = 100000;
-    *hnsPeriodicity = 100000;
-
-    // Start pipewire thread
-    if (!bmsw_) log_fatal("audio::pipewire", "Library not found: '{}'", (MODULE_PATH / "bmsound-wine.dll").string());
-    auto pipewireinit = (BmswClientInit_t)GetProcAddress(bmsw_, "BmswClientInit");
-    if (!pipewireinit) log_fatal("audio::pipewire", "Library invalid: '{}'", (MODULE_PATH / "bmsound-wine.dll").string());
-    internal_ = std::thread(pipewireinit,GAME_INSTANCE->title());
+    log_info("audio::pipewire", "{}", __FUNCTION__);
+    if (client_) *latency = BmswClientWasapiPeriod(client_);

    return S_OK;
 }
-HRESULT PipewireBackend::on_get_buffer_size(uint32_t *buffer_frames) noexcept {
-    *buffer_frames = 0;
-
-    return S_OK;
-}
-HRESULT PipewireBackend::on_get_stream_latency(REFERENCE_TIME *latency) noexcept {
-    *latency = 100000;
-
-    return S_OK;
-}
-HRESULT PipewireBackend::on_get_current_padding(std::optional<uint32_t> &padding_frames) noexcept {
-
+HRESULT PipewireBackend::on_get_current_padding(std::optional<uint32_t> &padding_frames) noexcept
+{
+    log_info("audio::pipewire", "{}", __FUNCTION__);
    padding_frames = 0;

    return S_OK;
 }
-HRESULT PipewireBackend::on_is_format_supported(
-    AUDCLNT_SHAREMODE *ShareMode,
-    const WAVEFORMATEX *pFormat,
-    WAVEFORMATEX **ppClosestMatch) noexcept
+HRESULT PipewireBackend::on_get_mix_format(WAVEFORMATEX **pp_device_format) noexcept
 {
-    // only accept 44.1 kHz, stereo, 16-bits per channel
-    if (*ShareMode == AUDCLNT_SHAREMODE_EXCLUSIVE &&
-        pFormat->nChannels == 2 &&
-        pFormat->nSamplesPerSec == 44100 &&
-        pFormat->wBitsPerSample == 16)
-    {
-        return S_OK;
-    }
-
-    return AUDCLNT_E_UNSUPPORTED_FORMAT;
-}
-HRESULT PipewireBackend::on_get_mix_format(WAVEFORMATEX **pp_device_format) noexcept {
+    log_info("audio::pipewire", "{}", __FUNCTION__);
    return E_NOTIMPL;
 }
-HRESULT PipewireBackend::on_get_device_period(
-    REFERENCE_TIME *default_device_period,
-    REFERENCE_TIME *minimum_device_period)
-{
-    *default_device_period = 10000;
-    *minimum_device_period = 10000;
-
-    return S_OK;
-}
-HRESULT PipewireBackend::on_start() noexcept {
-    return S_OK;
-}
-HRESULT PipewireBackend::on_stop() noexcept {
-    return S_OK;
-}
-HRESULT PipewireBackend::on_set_event_handle(HANDLE *event_handle) {
-
-    *event_handle = CreateEvent(nullptr, true, false, nullptr);
-
-    return S_OK;
-}
-
-HRESULT PipewireBackend::on_get_buffer(uint32_t num_frames_requested, BYTE **ppData) {
-    static BYTE buf[10000];
-    *ppData = buf;
-
-    return S_OK;
-}
-HRESULT PipewireBackend::on_release_buffer(uint32_t num_frames_written, DWORD dwFlags) {
-
-    return S_OK;
-}
-PipewireBackend::PipewireBackend() : format_(hooks::audio::FORMAT), bmsw_(libutils::try_library(MODULE_PATH / "bmsound-wine.dll"))
-{
-
-}
@@ -4,48 +4,30 @@
 #include <thread>


-struct PipewireBackend final : AudioBackend {
+struct PipewireBackend final : AudioBackend
+{
 public:
+    HANDLE relay_handle_;
+
    explicit PipewireBackend();
-    ~PipewireBackend() final = default;
-
+    ~PipewireBackend() final;
    [[nodiscard]] const WAVEFORMATEXTENSIBLE &format() const noexcept override;
-
-    HRESULT on_initialize(
-        AUDCLNT_SHAREMODE *ShareMode,
-        DWORD *StreamFlags,
-        REFERENCE_TIME *hnsBufferDuration,
-        REFERENCE_TIME *hnsPeriodicity,
-        const WAVEFORMATEX *pFormat,
-        LPCGUID AudioSessionGuid) noexcept override;
-
+    HRESULT on_initialize(AUDCLNT_SHAREMODE *ShareMode, DWORD *StreamFlags, REFERENCE_TIME *hnsBufferDuration, REFERENCE_TIME *hnsPeriodicity, const WAVEFORMATEX *pFormat, LPCGUID AudioSessionGuid) noexcept override;
    HRESULT on_get_buffer_size(uint32_t *buffer_frames) noexcept override;
    HRESULT on_get_stream_latency(REFERENCE_TIME *latency) noexcept override;
    HRESULT on_get_current_padding(std::optional<uint32_t> &padding_frames) noexcept override;
-
-    HRESULT on_is_format_supported(
-        AUDCLNT_SHAREMODE *ShareMode,
-        const WAVEFORMATEX *pFormat,
-        WAVEFORMATEX **ppClosestMatch) noexcept override;
-
+    HRESULT on_is_format_supported(AUDCLNT_SHAREMODE *ShareMode, const WAVEFORMATEX *pFormat, WAVEFORMATEX **ppClosestMatch) noexcept override;
    HRESULT on_get_mix_format(WAVEFORMATEX **pp_device_format) noexcept override;
-
-    HRESULT on_get_device_period(
-        REFERENCE_TIME *default_device_period,
-        REFERENCE_TIME *minimum_device_period) override;
-
+    HRESULT on_get_device_period(REFERENCE_TIME *default_device_period, REFERENCE_TIME *minimum_device_period) override;
    HRESULT on_start() noexcept override;
    HRESULT on_stop() noexcept override;
    HRESULT on_set_event_handle(HANDLE *event_handle) override;
-
    HRESULT on_get_buffer(uint32_t num_frames_requested, BYTE **ppData) override;
    HRESULT on_release_buffer(uint32_t num_frames_written, DWORD dwFlags) override;

 private:
-
    const WAVEFORMATEXTENSIBLE &format_;
-    std::thread internal_;
-    HMODULE bmsw_;
-    //BYTE *active_sound_buffer = nullptr;
+    void *client_;
+
 };