audren_u.cpp 19 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550
  1. // SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
  2. // SPDX-License-Identifier: GPL-2.0-or-later
  3. #include <array>
  4. #include <memory>
  5. #include "audio_core/audio_core.h"
  6. #include "audio_core/common/audio_renderer_parameter.h"
  7. #include "audio_core/common/feature_support.h"
  8. #include "audio_core/renderer/audio_device.h"
  9. #include "audio_core/renderer/audio_renderer.h"
  10. #include "audio_core/renderer/voice/voice_info.h"
  11. #include "common/alignment.h"
  12. #include "common/bit_util.h"
  13. #include "common/common_funcs.h"
  14. #include "common/logging/log.h"
  15. #include "common/polyfill_ranges.h"
  16. #include "common/string_util.h"
  17. #include "core/core.h"
  18. #include "core/hle/ipc_helpers.h"
  19. #include "core/hle/kernel/k_event.h"
  20. #include "core/hle/kernel/k_process.h"
  21. #include "core/hle/kernel/k_transfer_memory.h"
  22. #include "core/hle/service/audio/audren_u.h"
  23. #include "core/hle/service/audio/errors.h"
  24. #include "core/memory.h"
  25. using namespace AudioCore::AudioRenderer;
  26. namespace Service::Audio {
  27. class IAudioRenderer final : public ServiceFramework<IAudioRenderer> {
  28. public:
  29. explicit IAudioRenderer(Core::System& system_, Manager& manager_,
  30. AudioCore::AudioRendererParameterInternal& params,
  31. Kernel::KTransferMemory* transfer_memory, u64 transfer_memory_size,
  32. u32 process_handle, u64 applet_resource_user_id, s32 session_id)
  33. : ServiceFramework{system_, "IAudioRenderer", ServiceThreadType::CreateNew},
  34. service_context{system_, "IAudioRenderer"}, rendered_event{service_context.CreateEvent(
  35. "IAudioRendererEvent")},
  36. manager{manager_}, impl{std::make_unique<Renderer>(system_, manager, rendered_event)} {
  37. // clang-format off
  38. static const FunctionInfo functions[] = {
  39. {0, &IAudioRenderer::GetSampleRate, "GetSampleRate"},
  40. {1, &IAudioRenderer::GetSampleCount, "GetSampleCount"},
  41. {2, &IAudioRenderer::GetMixBufferCount, "GetMixBufferCount"},
  42. {3, &IAudioRenderer::GetState, "GetState"},
  43. {4, &IAudioRenderer::RequestUpdate, "RequestUpdate"},
  44. {5, &IAudioRenderer::Start, "Start"},
  45. {6, &IAudioRenderer::Stop, "Stop"},
  46. {7, &IAudioRenderer::QuerySystemEvent, "QuerySystemEvent"},
  47. {8, &IAudioRenderer::SetRenderingTimeLimit, "SetRenderingTimeLimit"},
  48. {9, &IAudioRenderer::GetRenderingTimeLimit, "GetRenderingTimeLimit"},
  49. {10, &IAudioRenderer::RequestUpdate, "RequestUpdateAuto"},
  50. {11, nullptr, "ExecuteAudioRendererRendering"},
  51. {12, &IAudioRenderer::SetVoiceDropParameter, "SetVoiceDropParameter"},
  52. {13, &IAudioRenderer::GetVoiceDropParameter, "GetVoiceDropParameter"},
  53. };
  54. // clang-format on
  55. RegisterHandlers(functions);
  56. impl->Initialize(params, transfer_memory, transfer_memory_size, process_handle,
  57. applet_resource_user_id, session_id);
  58. }
  59. ~IAudioRenderer() override {
  60. impl->Finalize();
  61. service_context.CloseEvent(rendered_event);
  62. }
  63. private:
  64. void GetSampleRate(Kernel::HLERequestContext& ctx) {
  65. const auto sample_rate{impl->GetSystem().GetSampleRate()};
  66. LOG_DEBUG(Service_Audio, "called. Sample rate {}", sample_rate);
  67. IPC::ResponseBuilder rb{ctx, 3};
  68. rb.Push(ResultSuccess);
  69. rb.Push(sample_rate);
  70. }
  71. void GetSampleCount(Kernel::HLERequestContext& ctx) {
  72. const auto sample_count{impl->GetSystem().GetSampleCount()};
  73. LOG_DEBUG(Service_Audio, "called. Sample count {}", sample_count);
  74. IPC::ResponseBuilder rb{ctx, 3};
  75. rb.Push(ResultSuccess);
  76. rb.Push(sample_count);
  77. }
  78. void GetState(Kernel::HLERequestContext& ctx) {
  79. const u32 state{!impl->GetSystem().IsActive()};
  80. LOG_DEBUG(Service_Audio, "called, state {}", state);
  81. IPC::ResponseBuilder rb{ctx, 3};
  82. rb.Push(ResultSuccess);
  83. rb.Push(state);
  84. }
  85. void GetMixBufferCount(Kernel::HLERequestContext& ctx) {
  86. LOG_DEBUG(Service_Audio, "called");
  87. const auto buffer_count{impl->GetSystem().GetMixBufferCount()};
  88. IPC::ResponseBuilder rb{ctx, 3};
  89. rb.Push(ResultSuccess);
  90. rb.Push(buffer_count);
  91. }
  92. void RequestUpdate(Kernel::HLERequestContext& ctx) {
  93. LOG_TRACE(Service_Audio, "called");
  94. const auto input{ctx.ReadBuffer(0)};
  95. // These buffers are written manually to avoid an issue with WriteBuffer throwing errors for
  96. // checking size 0. Performance size is 0 for most games.
  97. std::vector<u8> output{};
  98. std::vector<u8> performance{};
  99. auto is_buffer_b{ctx.BufferDescriptorB()[0].Size() != 0};
  100. if (is_buffer_b) {
  101. const auto buffersB{ctx.BufferDescriptorB()};
  102. output.resize(buffersB[0].Size(), 0);
  103. performance.resize(buffersB[1].Size(), 0);
  104. } else {
  105. const auto buffersC{ctx.BufferDescriptorC()};
  106. output.resize(buffersC[0].Size(), 0);
  107. performance.resize(buffersC[1].Size(), 0);
  108. }
  109. auto result = impl->RequestUpdate(input, performance, output);
  110. if (result.IsSuccess()) {
  111. if (is_buffer_b) {
  112. ctx.WriteBufferB(output.data(), output.size(), 0);
  113. ctx.WriteBufferB(performance.data(), performance.size(), 1);
  114. } else {
  115. ctx.WriteBufferC(output.data(), output.size(), 0);
  116. ctx.WriteBufferC(performance.data(), performance.size(), 1);
  117. }
  118. } else {
  119. LOG_ERROR(Service_Audio, "RequestUpdate failed error 0x{:02X}!", result.description);
  120. }
  121. IPC::ResponseBuilder rb{ctx, 2};
  122. rb.Push(result);
  123. }
  124. void Start(Kernel::HLERequestContext& ctx) {
  125. LOG_DEBUG(Service_Audio, "called");
  126. impl->Start();
  127. IPC::ResponseBuilder rb{ctx, 2};
  128. rb.Push(ResultSuccess);
  129. }
  130. void Stop(Kernel::HLERequestContext& ctx) {
  131. LOG_DEBUG(Service_Audio, "called");
  132. impl->Stop();
  133. IPC::ResponseBuilder rb{ctx, 2};
  134. rb.Push(ResultSuccess);
  135. }
  136. void QuerySystemEvent(Kernel::HLERequestContext& ctx) {
  137. LOG_DEBUG(Service_Audio, "called");
  138. if (impl->GetSystem().GetExecutionMode() == AudioCore::ExecutionMode::Manual) {
  139. IPC::ResponseBuilder rb{ctx, 2};
  140. rb.Push(ERR_NOT_SUPPORTED);
  141. return;
  142. }
  143. IPC::ResponseBuilder rb{ctx, 2, 1};
  144. rb.Push(ResultSuccess);
  145. rb.PushCopyObjects(rendered_event->GetReadableEvent());
  146. }
  147. void SetRenderingTimeLimit(Kernel::HLERequestContext& ctx) {
  148. LOG_DEBUG(Service_Audio, "called");
  149. IPC::RequestParser rp{ctx};
  150. auto limit = rp.PopRaw<u32>();
  151. auto& system_ = impl->GetSystem();
  152. system_.SetRenderingTimeLimit(limit);
  153. IPC::ResponseBuilder rb{ctx, 2};
  154. rb.Push(ResultSuccess);
  155. }
  156. void GetRenderingTimeLimit(Kernel::HLERequestContext& ctx) {
  157. LOG_DEBUG(Service_Audio, "called");
  158. auto& system_ = impl->GetSystem();
  159. auto time = system_.GetRenderingTimeLimit();
  160. IPC::ResponseBuilder rb{ctx, 3};
  161. rb.Push(ResultSuccess);
  162. rb.Push(time);
  163. }
  164. void ExecuteAudioRendererRendering(Kernel::HLERequestContext& ctx) {
  165. LOG_DEBUG(Service_Audio, "called");
  166. }
  167. void SetVoiceDropParameter(Kernel::HLERequestContext& ctx) {
  168. LOG_DEBUG(Service_Audio, "called");
  169. IPC::RequestParser rp{ctx};
  170. auto voice_drop_param{rp.Pop<f32>()};
  171. auto& system_ = impl->GetSystem();
  172. system_.SetVoiceDropParameter(voice_drop_param);
  173. IPC::ResponseBuilder rb{ctx, 2};
  174. rb.Push(ResultSuccess);
  175. }
  176. void GetVoiceDropParameter(Kernel::HLERequestContext& ctx) {
  177. LOG_DEBUG(Service_Audio, "called");
  178. auto& system_ = impl->GetSystem();
  179. auto voice_drop_param{system_.GetVoiceDropParameter()};
  180. IPC::ResponseBuilder rb{ctx, 3};
  181. rb.Push(ResultSuccess);
  182. rb.Push(voice_drop_param);
  183. }
  184. KernelHelpers::ServiceContext service_context;
  185. Kernel::KEvent* rendered_event;
  186. Manager& manager;
  187. std::unique_ptr<Renderer> impl;
  188. };
  189. class IAudioDevice final : public ServiceFramework<IAudioDevice> {
  190. public:
  191. explicit IAudioDevice(Core::System& system_, u64 applet_resource_user_id, u32 revision,
  192. u32 device_num)
  193. : ServiceFramework{system_, "IAudioDevice", ServiceThreadType::CreateNew},
  194. service_context{system_, "IAudioDevice"}, impl{std::make_unique<AudioDevice>(
  195. system_, applet_resource_user_id,
  196. revision)},
  197. event{service_context.CreateEvent(fmt::format("IAudioDeviceEvent-{}", device_num))} {
  198. static const FunctionInfo functions[] = {
  199. {0, &IAudioDevice::ListAudioDeviceName, "ListAudioDeviceName"},
  200. {1, &IAudioDevice::SetAudioDeviceOutputVolume, "SetAudioDeviceOutputVolume"},
  201. {2, &IAudioDevice::GetAudioDeviceOutputVolume, "GetAudioDeviceOutputVolume"},
  202. {3, &IAudioDevice::GetActiveAudioDeviceName, "GetActiveAudioDeviceName"},
  203. {4, &IAudioDevice::QueryAudioDeviceSystemEvent, "QueryAudioDeviceSystemEvent"},
  204. {5, &IAudioDevice::GetActiveChannelCount, "GetActiveChannelCount"},
  205. {6, &IAudioDevice::ListAudioDeviceName, "ListAudioDeviceNameAuto"},
  206. {7, &IAudioDevice::SetAudioDeviceOutputVolume, "SetAudioDeviceOutputVolumeAuto"},
  207. {8, &IAudioDevice::GetAudioDeviceOutputVolume, "GetAudioDeviceOutputVolumeAuto"},
  208. {10, &IAudioDevice::GetActiveAudioDeviceName, "GetActiveAudioDeviceNameAuto"},
  209. {11, &IAudioDevice::QueryAudioDeviceInputEvent, "QueryAudioDeviceInputEvent"},
  210. {12, &IAudioDevice::QueryAudioDeviceOutputEvent, "QueryAudioDeviceOutputEvent"},
  211. {13, &IAudioDevice::GetActiveAudioDeviceName, "GetActiveAudioOutputDeviceName"},
  212. {14, &IAudioDevice::ListAudioOutputDeviceName, "ListAudioOutputDeviceName"},
  213. };
  214. RegisterHandlers(functions);
  215. event->Signal();
  216. }
  217. ~IAudioDevice() override {
  218. service_context.CloseEvent(event);
  219. }
  220. private:
  221. void ListAudioDeviceName(Kernel::HLERequestContext& ctx) {
  222. const size_t in_count = ctx.GetWriteBufferNumElements<AudioDevice::AudioDeviceName>();
  223. std::vector<AudioDevice::AudioDeviceName> out_names{};
  224. const u32 out_count = impl->ListAudioDeviceName(out_names, in_count);
  225. std::string out{};
  226. for (u32 i = 0; i < out_count; i++) {
  227. std::string a{};
  228. u32 j = 0;
  229. while (out_names[i].name[j] != '\0') {
  230. a += out_names[i].name[j];
  231. j++;
  232. }
  233. out += "\n\t" + a;
  234. }
  235. LOG_DEBUG(Service_Audio, "called.\nNames={}", out);
  236. IPC::ResponseBuilder rb{ctx, 3};
  237. ctx.WriteBuffer(out_names);
  238. rb.Push(ResultSuccess);
  239. rb.Push(out_count);
  240. }
  241. void SetAudioDeviceOutputVolume(Kernel::HLERequestContext& ctx) {
  242. IPC::RequestParser rp{ctx};
  243. const f32 volume = rp.Pop<f32>();
  244. const auto device_name_buffer = ctx.ReadBuffer();
  245. const std::string name = Common::StringFromBuffer(device_name_buffer);
  246. LOG_DEBUG(Service_Audio, "called. name={}, volume={}", name, volume);
  247. if (name == "AudioTvOutput") {
  248. impl->SetDeviceVolumes(volume);
  249. }
  250. IPC::ResponseBuilder rb{ctx, 2};
  251. rb.Push(ResultSuccess);
  252. }
  253. void GetAudioDeviceOutputVolume(Kernel::HLERequestContext& ctx) {
  254. const auto device_name_buffer = ctx.ReadBuffer();
  255. const std::string name = Common::StringFromBuffer(device_name_buffer);
  256. LOG_DEBUG(Service_Audio, "called. Name={}", name);
  257. f32 volume{1.0f};
  258. if (name == "AudioTvOutput") {
  259. volume = impl->GetDeviceVolume(name);
  260. }
  261. IPC::ResponseBuilder rb{ctx, 3};
  262. rb.Push(ResultSuccess);
  263. rb.Push(volume);
  264. }
  265. void GetActiveAudioDeviceName(Kernel::HLERequestContext& ctx) {
  266. const auto write_size = ctx.GetWriteBufferSize();
  267. std::string out_name{"AudioTvOutput"};
  268. LOG_DEBUG(Service_Audio, "(STUBBED) called. Name={}", out_name);
  269. out_name.resize(write_size);
  270. ctx.WriteBuffer(out_name);
  271. IPC::ResponseBuilder rb{ctx, 2};
  272. rb.Push(ResultSuccess);
  273. }
  274. void QueryAudioDeviceSystemEvent(Kernel::HLERequestContext& ctx) {
  275. LOG_DEBUG(Service_Audio, "(STUBBED) called");
  276. event->Signal();
  277. IPC::ResponseBuilder rb{ctx, 2, 1};
  278. rb.Push(ResultSuccess);
  279. rb.PushCopyObjects(event->GetReadableEvent());
  280. }
  281. void GetActiveChannelCount(Kernel::HLERequestContext& ctx) {
  282. const auto& sink{system.AudioCore().GetOutputSink()};
  283. u32 channel_count{sink.GetDeviceChannels()};
  284. LOG_DEBUG(Service_Audio, "(STUBBED) called. Channels={}", channel_count);
  285. IPC::ResponseBuilder rb{ctx, 3};
  286. rb.Push(ResultSuccess);
  287. rb.Push<u32>(channel_count);
  288. }
  289. void QueryAudioDeviceInputEvent(Kernel::HLERequestContext& ctx) {
  290. LOG_DEBUG(Service_Audio, "(STUBBED) called");
  291. IPC::ResponseBuilder rb{ctx, 2, 1};
  292. rb.Push(ResultSuccess);
  293. rb.PushCopyObjects(event->GetReadableEvent());
  294. }
  295. void QueryAudioDeviceOutputEvent(Kernel::HLERequestContext& ctx) {
  296. LOG_DEBUG(Service_Audio, "called");
  297. IPC::ResponseBuilder rb{ctx, 2, 1};
  298. rb.Push(ResultSuccess);
  299. rb.PushCopyObjects(event->GetReadableEvent());
  300. }
  301. void ListAudioOutputDeviceName(Kernel::HLERequestContext& ctx) {
  302. const size_t in_count = ctx.GetWriteBufferNumElements<AudioDevice::AudioDeviceName>();
  303. std::vector<AudioDevice::AudioDeviceName> out_names{};
  304. const u32 out_count = impl->ListAudioOutputDeviceName(out_names, in_count);
  305. std::string out{};
  306. for (u32 i = 0; i < out_count; i++) {
  307. std::string a{};
  308. u32 j = 0;
  309. while (out_names[i].name[j] != '\0') {
  310. a += out_names[i].name[j];
  311. j++;
  312. }
  313. out += "\n\t" + a;
  314. }
  315. LOG_DEBUG(Service_Audio, "called.\nNames={}", out);
  316. IPC::ResponseBuilder rb{ctx, 3};
  317. ctx.WriteBuffer(out_names);
  318. rb.Push(ResultSuccess);
  319. rb.Push(out_count);
  320. }
  321. KernelHelpers::ServiceContext service_context;
  322. std::unique_ptr<AudioDevice> impl;
  323. Kernel::KEvent* event;
  324. };
  325. AudRenU::AudRenU(Core::System& system_)
  326. : ServiceFramework{system_, "audren:u", ServiceThreadType::CreateNew},
  327. service_context{system_, "audren:u"}, impl{std::make_unique<Manager>(system_)} {
  328. // clang-format off
  329. static const FunctionInfo functions[] = {
  330. {0, &AudRenU::OpenAudioRenderer, "OpenAudioRenderer"},
  331. {1, &AudRenU::GetWorkBufferSize, "GetWorkBufferSize"},
  332. {2, &AudRenU::GetAudioDeviceService, "GetAudioDeviceService"},
  333. {3, nullptr, "OpenAudioRendererForManualExecution"},
  334. {4, &AudRenU::GetAudioDeviceServiceWithRevisionInfo, "GetAudioDeviceServiceWithRevisionInfo"},
  335. };
  336. // clang-format on
  337. RegisterHandlers(functions);
  338. }
  339. AudRenU::~AudRenU() = default;
  340. void AudRenU::OpenAudioRenderer(Kernel::HLERequestContext& ctx) {
  341. IPC::RequestParser rp{ctx};
  342. AudioCore::AudioRendererParameterInternal params;
  343. rp.PopRaw<AudioCore::AudioRendererParameterInternal>(params);
  344. auto transfer_memory_handle = ctx.GetCopyHandle(0);
  345. auto process_handle = ctx.GetCopyHandle(1);
  346. auto transfer_memory_size = rp.Pop<u64>();
  347. auto applet_resource_user_id = rp.Pop<u64>();
  348. if (impl->GetSessionCount() + 1 > AudioCore::MaxRendererSessions) {
  349. LOG_ERROR(Service_Audio, "Too many AudioRenderer sessions open!");
  350. IPC::ResponseBuilder rb{ctx, 2};
  351. rb.Push(ERR_MAXIMUM_SESSIONS_REACHED);
  352. return;
  353. }
  354. const auto& handle_table{system.ApplicationProcess()->GetHandleTable()};
  355. auto process{handle_table.GetObject<Kernel::KProcess>(process_handle)};
  356. auto transfer_memory{
  357. process->GetHandleTable().GetObject<Kernel::KTransferMemory>(transfer_memory_handle)};
  358. const auto session_id{impl->GetSessionId()};
  359. if (session_id == -1) {
  360. LOG_ERROR(Service_Audio, "Tried to open a session that's already in use!");
  361. IPC::ResponseBuilder rb{ctx, 2};
  362. rb.Push(ERR_MAXIMUM_SESSIONS_REACHED);
  363. return;
  364. }
  365. LOG_DEBUG(Service_Audio, "Opened new AudioRenderer session {} sessions open {}", session_id,
  366. impl->GetSessionCount());
  367. IPC::ResponseBuilder rb{ctx, 2, 0, 1};
  368. rb.Push(ResultSuccess);
  369. rb.PushIpcInterface<IAudioRenderer>(system, *impl, params, transfer_memory.GetPointerUnsafe(),
  370. transfer_memory_size, process_handle,
  371. applet_resource_user_id, session_id);
  372. }
  373. void AudRenU::GetWorkBufferSize(Kernel::HLERequestContext& ctx) {
  374. AudioCore::AudioRendererParameterInternal params;
  375. IPC::RequestParser rp{ctx};
  376. rp.PopRaw<AudioCore::AudioRendererParameterInternal>(params);
  377. u64 size{0};
  378. auto result = impl->GetWorkBufferSize(params, size);
  379. std::string output_info{};
  380. output_info += fmt::format("\tRevision {}", AudioCore::GetRevisionNum(params.revision));
  381. output_info +=
  382. fmt::format("\n\tSample Rate {}, Sample Count {}", params.sample_rate, params.sample_count);
  383. output_info += fmt::format("\n\tExecution Mode {}, Voice Drop Enabled {}",
  384. static_cast<u32>(params.execution_mode), params.voice_drop_enabled);
  385. output_info += fmt::format(
  386. "\n\tSizes: Effects {:04X}, Mixes {:04X}, Sinks {:04X}, Submixes {:04X}, Splitter Infos "
  387. "{:04X}, Splitter Destinations {:04X}, Voices {:04X}, Performance Frames {:04X} External "
  388. "Context {:04X}",
  389. params.effects, params.mixes, params.sinks, params.sub_mixes, params.splitter_infos,
  390. params.splitter_destinations, params.voices, params.perf_frames,
  391. params.external_context_size);
  392. LOG_DEBUG(Service_Audio, "called.\nInput params:\n{}\nOutput params:\n\tWorkbuffer size {:08X}",
  393. output_info, size);
  394. IPC::ResponseBuilder rb{ctx, 4};
  395. rb.Push(result);
  396. rb.Push<u64>(size);
  397. }
  398. void AudRenU::GetAudioDeviceService(Kernel::HLERequestContext& ctx) {
  399. IPC::RequestParser rp{ctx};
  400. const auto applet_resource_user_id = rp.Pop<u64>();
  401. LOG_DEBUG(Service_Audio, "called. Applet resource id {}", applet_resource_user_id);
  402. IPC::ResponseBuilder rb{ctx, 2, 0, 1};
  403. rb.Push(ResultSuccess);
  404. rb.PushIpcInterface<IAudioDevice>(system, applet_resource_user_id,
  405. ::Common::MakeMagic('R', 'E', 'V', '1'), num_audio_devices++);
  406. }
  407. void AudRenU::OpenAudioRendererForManualExecution(Kernel::HLERequestContext& ctx) {
  408. LOG_DEBUG(Service_Audio, "called");
  409. }
  410. void AudRenU::GetAudioDeviceServiceWithRevisionInfo(Kernel::HLERequestContext& ctx) {
  411. struct Parameters {
  412. u32 revision;
  413. u64 applet_resource_user_id;
  414. };
  415. IPC::RequestParser rp{ctx};
  416. const auto [revision, applet_resource_user_id] = rp.PopRaw<Parameters>();
  417. LOG_DEBUG(Service_Audio, "called. Revision {} Applet resource id {}",
  418. AudioCore::GetRevisionNum(revision), applet_resource_user_id);
  419. IPC::ResponseBuilder rb{ctx, 2, 0, 1};
  420. rb.Push(ResultSuccess);
  421. rb.PushIpcInterface<IAudioDevice>(system, applet_resource_user_id, revision,
  422. num_audio_devices++);
  423. }
  424. } // namespace Service::Audio