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service/am: Add basic implementation of ChangeMainAppletMasterVolume

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All this does is supply a new volume level and a fade time in
nanoseconds for the volume transition to occur within.
This commit is contained in:
Lioncash 2019-03-17 22:39:29 -04:00
parent c07ebeac19
commit 26b809549b
2 changed files with 29 additions and 1 deletions
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22
src/core/hle/service/am/am.cpp
View file

@ -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>();

8
src/core/hle/service/am/am.h
View file

@ -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> {