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// Copyright 2019 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/public/browser/media_service.h"
#include "base/no_destructor.h"
#include "base/threading/sequence_local_storage_slot.h"
#include "base/time/time.h"
#include "content/public/browser/browser_task_traits.h"
#include "content/public/browser/browser_thread.h"
#include "media/mojo/buildflags.h"
#include "mojo/public/cpp/bindings/remote.h"
#if BUILDFLAG(ENABLE_MOJO_MEDIA_IN_GPU_PROCESS)
#include "content/browser/gpu/gpu_process_host.h"
#elif BUILDFLAG(ENABLE_MOJO_MEDIA_IN_BROWSER_PROCESS)
#include "media/mojo/services/media_service_factory.h"
#elif BUILDFLAG(ENABLE_MOJO_MEDIA_IN_UTILITY_PROCESS)
#include "content/public/browser/service_process_host.h"
#endif
namespace content {
namespace {
#if BUILDFLAG(ENABLE_MOJO_MEDIA_IN_GPU_PROCESS)
void BindReceiverInGpuProcess(
mojo::PendingReceiver<media::mojom::MediaService> receiver) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
auto* process_host = GpuProcessHost::Get();
if (!process_host) {
DLOG(ERROR) << "GPU process host not available";
return;
}
process_host->RunService(std::move(receiver));
}
#endif
#if BUILDFLAG(ENABLE_MOJO_MEDIA_IN_UTILITY_PROCESS)
// When running in an isolated service process, we reset the connection and tear
// down the process once it's been idle for at least this long.
constexpr base::TimeDelta kIdleTimeout = base::TimeDelta::FromSeconds(5);
#endif
} // namespace
media::mojom::MediaService& GetMediaService() {
// NOTE: We use sequence-local storage to limit the lifetime of this Remote to
// that of the UI-thread sequence. This ensures that the Remote is destroyed
// when the task environment is torn down and reinitialized, e.g. between unit
// tests.
static base::NoDestructor<
base::SequenceLocalStorageSlot<mojo::Remote<media::mojom::MediaService>>>
remote_slot;
auto& remote = remote_slot->GetOrCreateValue();
if (!remote) {
auto receiver = remote.BindNewPipeAndPassReceiver();
remote.reset_on_disconnect();
#if BUILDFLAG(ENABLE_MOJO_MEDIA_IN_GPU_PROCESS)
GetIOThreadTaskRunner({})->PostTask(
FROM_HERE,
base::BindOnce(&BindReceiverInGpuProcess, std::move(receiver)));
#elif BUILDFLAG(ENABLE_MOJO_MEDIA_IN_BROWSER_PROCESS)
static base::NoDestructor<std::unique_ptr<media::MediaService>> service;
*service = media::CreateMediaService(std::move(receiver));
#elif BUILDFLAG(ENABLE_MOJO_MEDIA_IN_UTILITY_PROCESS)
ServiceProcessHost::Launch(
std::move(receiver),
ServiceProcessHost::Options()
.WithDisplayName("Media Service")
.Pass());
remote.reset_on_idle_timeout(kIdleTimeout);
#endif
}
return *remote.get();
}
} // namespace content
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