116 lines
1.9 KiB
C++
116 lines
1.9 KiB
C++
// SPDX-License-Identifier: GPL-2.0-or-later
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// Copyright The Music Player Daemon Project
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#include "ProxyInputStream.hxx"
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#include "tag/Tag.hxx"
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#include <utility>
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ProxyInputStream::ProxyInputStream(InputStreamPtr _input) noexcept
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:InputStream(_input->GetUriView(), _input->mutex),
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input(std::move(_input))
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{
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assert(input);
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input->SetHandler(this);
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}
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ProxyInputStream::~ProxyInputStream() noexcept = default;
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void
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ProxyInputStream::SetInput(InputStreamPtr _input) noexcept
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{
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assert(!input);
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assert(_input);
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input = std::move(_input);
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input->SetHandler(this);
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/* this call wakes up client threads if the new input is
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ready */
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CopyAttributes();
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set_input_cond.notify_one();
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}
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void
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ProxyInputStream::CopyAttributes()
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{
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assert(input);
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if (input->IsReady()) {
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if (!IsReady()) {
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if (input->HasMimeType())
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SetMimeType(input->GetMimeType());
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size = input->KnownSize()
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? input->GetSize()
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: UNKNOWN_SIZE;
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seekable = input->IsSeekable();
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SetReady();
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}
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offset = input->GetOffset();
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}
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}
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void
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ProxyInputStream::Check()
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{
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if (input)
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input->Check();
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}
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void
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ProxyInputStream::Update() noexcept
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{
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if (!input)
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return;
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input->Update();
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CopyAttributes();
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}
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void
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ProxyInputStream::Seek(std::unique_lock<Mutex> &lock,
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offset_type new_offset)
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{
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set_input_cond.wait(lock, [this]{ return !!input; });
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input->Seek(lock, new_offset);
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CopyAttributes();
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}
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bool
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ProxyInputStream::IsEOF() const noexcept
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{
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return input && input->IsEOF();
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}
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std::unique_ptr<Tag>
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ProxyInputStream::ReadTag() noexcept
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{
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if (!input)
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return nullptr;
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return input->ReadTag();
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}
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bool
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ProxyInputStream::IsAvailable() const noexcept
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{
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return input && input->IsAvailable();
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}
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size_t
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ProxyInputStream::Read(std::unique_lock<Mutex> &lock,
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std::span<std::byte> dest)
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{
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set_input_cond.wait(lock, [this]{ return !!input; });
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size_t nbytes = input->Read(lock, dest);
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CopyAttributes();
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return nbytes;
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}
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