blob: c85709faa9cfe4958a04a970cb57bb03a740aaaa [file] [log] [blame]
* Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
#include <string>
#include "api/video_codecs/h264_profile_level_id.h"
// TODO( Remove this file once downstream projects stop
// depend on it.
namespace webrtc {
namespace H264 {
typedef H264Profile Profile;
typedef H264Level Level;
typedef H264ProfileLevelId ProfileLevelId;
constexpr H264Profile kProfileConstrainedBaseline =
constexpr H264Profile kProfileBaseline = H264Profile::kProfileBaseline;
constexpr H264Profile kProfileMain = H264Profile::kProfileMain;
constexpr H264Profile kProfileConstrainedHigh =
constexpr H264Profile kProfileHigh = H264Profile::kProfileHigh;
constexpr H264Level kLevel1_b = H264Level::kLevel1_b;
constexpr H264Level kLevel1 = H264Level::kLevel1;
constexpr H264Level kLevel1_1 = H264Level::kLevel1_1;
constexpr H264Level kLevel1_2 = H264Level::kLevel1_2;
constexpr H264Level kLevel1_3 = H264Level::kLevel1_3;
constexpr H264Level kLevel2 = H264Level::kLevel2;
constexpr H264Level kLevel2_1 = H264Level::kLevel2_1;
constexpr H264Level kLevel2_2 = H264Level::kLevel2_2;
constexpr H264Level kLevel3 = H264Level::kLevel3;
constexpr H264Level kLevel3_1 = H264Level::kLevel3_1;
constexpr H264Level kLevel3_2 = H264Level::kLevel3_2;
constexpr H264Level kLevel4 = H264Level::kLevel4;
constexpr H264Level kLevel4_1 = H264Level::kLevel4_1;
constexpr H264Level kLevel4_2 = H264Level::kLevel4_2;
constexpr H264Level kLevel5 = H264Level::kLevel5;
constexpr H264Level kLevel5_1 = H264Level::kLevel5_1;
constexpr H264Level kLevel5_2 = H264Level::kLevel5_2;
// Parse profile level id that is represented as a string of 3 hex bytes.
// Nothing will be returned if the string is not a recognized H264
// profile level id.
absl::optional<ProfileLevelId> ParseProfileLevelId(const char* str);
// Parse profile level id that is represented as a string of 3 hex bytes
// contained in an SDP key-value map. A default profile level id will be
// returned if the profile-level-id key is missing. Nothing will be returned if
// the key is present but the string is invalid.
RTC_EXPORT absl::optional<ProfileLevelId> ParseSdpProfileLevelId(
const SdpVideoFormat::Parameters& params);
// Given that a decoder supports up to a given frame size (in pixels) at up to a
// given number of frames per second, return the highest H.264 level where it
// can guarantee that it will be able to support all valid encoded streams that
// are within that level.
RTC_EXPORT absl::optional<Level> SupportedLevel(int max_frame_pixel_count,
float max_fps);
// Returns canonical string representation as three hex bytes of the profile
// level id, or returns nothing for invalid profile level ids.
RTC_EXPORT absl::optional<std::string> ProfileLevelIdToString(
const ProfileLevelId& profile_level_id);
// Returns true if the parameters have the same H264 profile, i.e. the same
// H264::Profile (Baseline, High, etc).
RTC_EXPORT bool IsSameH264Profile(const SdpVideoFormat::Parameters& params1,
const SdpVideoFormat::Parameters& params2);
} // namespace H264
} // namespace webrtc