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// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef THIRD_PARTY_BLINK_RENDERER_PLATFORM_PEERCONNECTION_WEBRTC_UTIL_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_PEERCONNECTION_WEBRTC_UTIL_H_
#include <optional>
#include "base/time/time.h"
#include "media/base/video_codecs.h"
#include "third_party/blink/renderer/platform/network/parsed_content_type.h"
#include "third_party/blink/renderer/platform/platform_export.h"
#include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"
#include "third_party/webrtc/api/units/time_delta.h"
#include "third_party/webrtc/api/units/timestamp.h"
#include "third_party/webrtc/api/video_codecs/sdp_video_format.h"
namespace blink {
String PLATFORM_EXPORT WebrtcCodecNameFromMimeType(const String& mime_type,
const char* prefix);
std::map<std::string, std::string> PLATFORM_EXPORT
ConvertToSdpVideoFormatParameters(
const ParsedContentHeaderFieldParameters& parameters);
base::TimeTicks PLATFORM_EXPORT ConvertToBaseTimeTicks(webrtc::Timestamp time);
base::TimeDelta PLATFORM_EXPORT
ConvertToBaseTimeDelta(webrtc::TimeDelta time_delta);
std::optional<media::VideoCodecProfile> PLATFORM_EXPORT
WebRTCFormatToCodecProfile(const webrtc::SdpVideoFormat& sdp);
// Returns an estimate of the TimeTick value at the time of the NTP epoch
// (Jan 1, 1900). It is based on base::TimeTicks::UnixEpoch(), so look at its
// documentation to understand the issues with this approach.
// Restrict usage to convert timestamps of WebRTC media frames that are
// expressed relative to the NTP epoch.
// Use as follows:
// FrameTimeTicks = WebRTCFrameNtpEpoch() + FrameTimeDeltaRelativeToNtpEpoch()
base::TimeTicks PLATFORM_EXPORT WebRTCFrameNtpEpoch();
// Converts an optional webrtc::Timestamp into an optional TimeTicks and
// optionally adds an offset to the result.
std::optional<base::TimeTicks> PLATFORM_EXPORT ConvertToOptionalTimeTicks(
std::optional<webrtc::Timestamp> time,
std::optional<base::TimeTicks> offset = std::nullopt);
// Converts an optional webrtc::TimesDelta into an base::TimeDelta.
std::optional<base::TimeDelta> PLATFORM_EXPORT
ConvertToOptionalTimeDelta(std::optional<webrtc::TimeDelta> time_delta);
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_PLATFORM_PEERCONNECTION_WEBRTC_UTIL_H_
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