From 26b809549b7cdadd75b55a1799d6cb7a2184b0a1 Mon Sep 17 00:00:00 2001
From: Lioncash <mathew1800@gmail.com>
Date: Sun, 17 Mar 2019 22:39:29 -0400
Subject: [PATCH] service/am: Add basic implementation of
ChangeMainAppletMasterVolume
All this does is supply a new volume level and a fade time in
nanoseconds for the volume transition to occur within.
---
src/core/hle/service/am/am.cpp | 22 +++++++++++++++++++++-
src/core/hle/service/am/am.h | 8 ++++++++
2 files changed, 29 insertions(+), 1 deletion(-)
diff --git a/src/core/hle/service/am/am.cpp b/src/core/hle/service/am/am.cpp
index 4ef449ccbc..c750d70ac2 100644
--- a/src/core/hle/service/am/am.cpp
+++ b/src/core/hle/service/am/am.cpp
@@ -98,7 +98,7 @@ IAudioController::IAudioController() : ServiceFramework("IAudioController") {
{0, &IAudioController::SetExpectedMasterVolume, "SetExpectedMasterVolume"},
{1, &IAudioController::GetMainAppletExpectedMasterVolume, "GetMainAppletExpectedMasterVolume"},
{2, &IAudioController::GetLibraryAppletExpectedMasterVolume, "GetLibraryAppletExpectedMasterVolume"},
- {3, nullptr, "ChangeMainAppletMasterVolume"},
+ {3, &IAudioController::ChangeMainAppletMasterVolume, "ChangeMainAppletMasterVolume"},
{4, &IAudioController::SetTransparentAudioRate, "SetTransparentVolumeRate"},
};
// clang-format on
@@ -139,6 +139,26 @@ void IAudioController::GetLibraryAppletExpectedMasterVolume(Kernel::HLERequestCo
rb.Push(library_applet_volume);
}
+void IAudioController::ChangeMainAppletMasterVolume(Kernel::HLERequestContext& ctx) {
+ struct Parameters {
+ float volume;
+ s64 fade_time_ns;
+ };
+ static_assert(sizeof(Parameters) == 16);
+
+ IPC::RequestParser rp{ctx};
+ const auto parameters = rp.PopRaw<Parameters>();
+
+ LOG_DEBUG(Service_AM, "called. volume={}, fade_time_ns={}", parameters.volume,
+ parameters.fade_time_ns);
+
+ main_applet_volume = std::clamp(parameters.volume, min_allowed_volume, max_allowed_volume);
+ fade_time_ns = std::chrono::nanoseconds{parameters.fade_time_ns};
+
+ IPC::ResponseBuilder rb{ctx, 2};
+ rb.Push(RESULT_SUCCESS);
+}
+
void IAudioController::SetTransparentAudioRate(Kernel::HLERequestContext& ctx) {
IPC::RequestParser rp{ctx};
const float transparent_volume_rate_tmp = rp.Pop<float>();
diff --git a/src/core/hle/service/am/am.h b/src/core/hle/service/am/am.h
index b77a8c96c9..565dd8e9eb 100644
--- a/src/core/hle/service/am/am.h
+++ b/src/core/hle/service/am/am.h
@@ -4,6 +4,7 @@
#pragma once
+#include <chrono>
#include <memory>
#include <queue>
#include "core/hle/kernel/writable_event.h"
@@ -81,6 +82,7 @@ private:
void SetExpectedMasterVolume(Kernel::HLERequestContext& ctx);
void GetMainAppletExpectedMasterVolume(Kernel::HLERequestContext& ctx);
void GetLibraryAppletExpectedMasterVolume(Kernel::HLERequestContext& ctx);
+ void ChangeMainAppletMasterVolume(Kernel::HLERequestContext& ctx);
void SetTransparentAudioRate(Kernel::HLERequestContext& ctx);
static constexpr float min_allowed_volume = 0.0f;
@@ -89,6 +91,12 @@ private:
float main_applet_volume{0.25f};
float library_applet_volume{max_allowed_volume};
float transparent_volume_rate{min_allowed_volume};
+
+ // Volume transition fade time in nanoseconds.
+ // e.g. If the main applet volume was 0% and was changed to 50%
+ // with a fade of 50ns, then over the course of 50ns,
+ // the volume will gradually fade up to 50%
+ std::chrono::nanoseconds fade_time_ns{0};
};
class IDisplayController final : public ServiceFramework<IDisplayController> {