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src/output: Add Interrupt interface

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This commit is contained in:
Shen-Ta Hsieh
2020-12-02 07:57:24 +08:00
committed by Max Kellermann
parent c46f97454a
commit 010f65a1d6
1 changed files with 17 additions and 1 deletions
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18
src/output/plugins/WasapiOutputPlugin.cxx
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@@ -22,6 +22,7 @@
#include "WasapiOutputPlugin.hxx" #include "WasapiOutputPlugin.hxx"
#include "lib/icu/Win32.hxx" #include "lib/icu/Win32.hxx"
#include "mixer/MixerList.hxx" #include "mixer/MixerList.hxx"
#include "output/Error.hxx"
#include "thread/Cond.hxx" #include "thread/Cond.hxx"
#include "thread/Mutex.hxx" #include "thread/Mutex.hxx"
#include "thread/Name.hxx" #include "thread/Name.hxx"
@@ -30,6 +31,7 @@
#include "util/Domain.hxx" #include "util/Domain.hxx"
#include "util/RuntimeError.hxx" #include "util/RuntimeError.hxx"
#include "util/ScopeExit.hxx" #include "util/ScopeExit.hxx"
#include "util/StringBuffer.hxx"
#include "win32/Com.hxx" #include "win32/Com.hxx"
#include "win32/ComHeapPtr.hxx" #include "win32/ComHeapPtr.hxx"
#include "win32/ComWorker.hxx" #include "win32/ComWorker.hxx"
@@ -129,7 +131,7 @@ public:
void Finish() noexcept { return SetStatus(Status::FINISH); } void Finish() noexcept { return SetStatus(Status::FINISH); }
void Play() noexcept { return SetStatus(Status::PLAY); } void Play() noexcept { return SetStatus(Status::PLAY); }
void Pause() noexcept { return SetStatus(Status::PAUSE); } void Pause() noexcept { return SetStatus(Status::PAUSE); }
void WaitDataPoped() noexcept { data_poped.Wait(200); } void WaitDataPoped() noexcept { data_poped.Wait(INFINITE); }
void CheckException() { void CheckException() {
if (error.occur.load()) { if (error.occur.load()) {
auto err = std::exchange(error.ptr, nullptr); auto err = std::exchange(error.ptr, nullptr);
@@ -183,6 +185,7 @@ public:
size_t Play(const void *chunk, size_t size) override; size_t Play(const void *chunk, size_t size) override;
void Drain() override; void Drain() override;
bool Pause() override; bool Pause() override;
void Interrupt() noexcept override;
constexpr bool Exclusive() const { return is_exclusive; } constexpr bool Exclusive() const { return is_exclusive; }
constexpr size_t FrameSize() const { return device_format.Format.nBlockAlign; } constexpr size_t FrameSize() const { return device_format.Format.nBlockAlign; }
@@ -191,6 +194,7 @@ public:
} }
private: private:
std::atomic_flag not_interrupted = true;
bool is_started = false; bool is_started = false;
bool is_exclusive; bool is_exclusive;
bool enumerate_devices; bool enumerate_devices;
@@ -486,12 +490,17 @@ std::chrono::steady_clock::duration WasapiOutput::Delay() const noexcept {
size_t WasapiOutput::Play(const void *chunk, size_t size) { size_t WasapiOutput::Play(const void *chunk, size_t size) {
assert(thread); assert(thread);
not_interrupted.test_and_set();
do { do {
const size_t consumed_size = const size_t consumed_size =
thread->spsc_buffer.push(static_cast<const BYTE *>(chunk), size); thread->spsc_buffer.push(static_cast<const BYTE *>(chunk), size);
if (consumed_size == 0) { if (consumed_size == 0) {
assert(is_started); assert(is_started);
thread->WaitDataPoped(); thread->WaitDataPoped();
if (!not_interrupted.test_and_set()) {
throw AudioOutputInterrupted{};
}
continue; continue;
} }
@@ -536,6 +545,13 @@ bool WasapiOutput::Pause() {
return true; return true;
} }
void WasapiOutput::Interrupt() noexcept {
if (thread) {
not_interrupted.clear();
thread->data_poped.Set();
}
}
void WasapiOutput::Drain() { void WasapiOutput::Drain() {
assert(thread); assert(thread);