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content / browser / media / key_system_support_win.cc [blame]
// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/browser/media/key_system_support_win.h"
#include "base/logging.h"
#include "content/browser/media/service_factory.h"
#include "media/cdm/win/media_foundation_cdm.h"
#include "media/mojo/mojom/key_system_support.mojom.h"
#include "media/mojo/mojom/media_foundation_service.mojom.h"
#include "mojo/public/cpp/bindings/callback_helpers.h"
#include "url/gurl.h"
namespace content {
namespace {
template <typename T>
base::flat_set<T> VectorToSet(const std::vector<T>& v) {
return base::flat_set<T>(v.begin(), v.end());
}
void OnKeySystemCapability(
bool is_hw_secure,
media::CdmCapabilityCB cdm_capability_cb,
bool is_supported,
const std::optional<media::KeySystemCapability>& key_system_capability) {
// Key system must support at least 1 video codec, 1 encryption scheme,
// and 1 encryption scheme to be considered. Support for audio codecs is
// optional.
if (!is_supported || !key_system_capability.has_value()) {
std::move(cdm_capability_cb).Run(std::nullopt);
return;
}
const std::optional<media::CdmCapability>& capability =
is_hw_secure ? key_system_capability.value().hw_secure_capability
: key_system_capability.value().sw_secure_capability;
if (!capability || capability->video_codecs.empty() ||
capability->encryption_schemes.empty() ||
capability->session_types.empty()) {
std::move(cdm_capability_cb).Run(std::nullopt);
return;
}
std::move(cdm_capability_cb).Run(capability);
}
} // namespace
void GetMediaFoundationServiceCdmCapability(
const std::string& key_system,
const base::FilePath& cdm_path,
bool is_hw_secure,
media::CdmCapabilityCB cdm_capability_cb) {
if (!media::MediaFoundationCdm::IsAvailable()) {
DVLOG(1) << "MediaFoundationCdm not available!";
std::move(cdm_capability_cb).Run(std::nullopt);
return;
}
// CDM capability is global, use a generic BrowserContext and Site to query.
auto& mf_service = GetMediaFoundationService(nullptr, GURL(), cdm_path);
mf_service.IsKeySystemSupported(
key_system, mojo::WrapCallbackWithDefaultInvokeIfNotRun(
base::BindOnce(&OnKeySystemCapability, is_hw_secure,
std::move(cdm_capability_cb)),
false, std::nullopt));
}
} // namespace content