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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
commit | 26a029d407be480d791972afb5975cf62c9360a6 (patch) | |
tree | f435a8308119effd964b339f76abb83a57c29483 /third_party/libwebrtc/api/video_codecs/h264_profile_level_id.h | |
parent | Initial commit. (diff) | |
download | firefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz firefox-26a029d407be480d791972afb5975cf62c9360a6.zip |
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'third_party/libwebrtc/api/video_codecs/h264_profile_level_id.h')
-rw-r--r-- | third_party/libwebrtc/api/video_codecs/h264_profile_level_id.h | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/third_party/libwebrtc/api/video_codecs/h264_profile_level_id.h b/third_party/libwebrtc/api/video_codecs/h264_profile_level_id.h new file mode 100644 index 0000000000..4b46ad329d --- /dev/null +++ b/third_party/libwebrtc/api/video_codecs/h264_profile_level_id.h @@ -0,0 +1,92 @@ +/* + * Copyright (c) 2021 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. + */ + +#ifndef API_VIDEO_CODECS_H264_PROFILE_LEVEL_ID_H_ +#define API_VIDEO_CODECS_H264_PROFILE_LEVEL_ID_H_ + +#include <string> + +#include "absl/types/optional.h" +#include "api/video_codecs/sdp_video_format.h" +#include "rtc_base/system/rtc_export.h" + +namespace webrtc { + +enum class H264Profile { + kProfileConstrainedBaseline, + kProfileBaseline, + kProfileMain, + kProfileConstrainedHigh, + kProfileHigh, + kProfilePredictiveHigh444, +}; + +// All values are equal to ten times the level number, except level 1b which is +// special. +enum class H264Level { + kLevel1_b = 0, + kLevel1 = 10, + kLevel1_1 = 11, + kLevel1_2 = 12, + kLevel1_3 = 13, + kLevel2 = 20, + kLevel2_1 = 21, + kLevel2_2 = 22, + kLevel3 = 30, + kLevel3_1 = 31, + kLevel3_2 = 32, + kLevel4 = 40, + kLevel4_1 = 41, + kLevel4_2 = 42, + kLevel5 = 50, + kLevel5_1 = 51, + kLevel5_2 = 52 +}; + +struct H264ProfileLevelId { + constexpr H264ProfileLevelId(H264Profile profile, H264Level level) + : profile(profile), level(level) {} + H264Profile profile; + H264Level level; +}; + +// 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<H264ProfileLevelId> ParseH264ProfileLevelId(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<H264ProfileLevelId> ParseSdpForH264ProfileLevelId( + 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<H264Level> H264SupportedLevel( + 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> H264ProfileLevelIdToString( + const H264ProfileLevelId& profile_level_id); + +// Returns true if the parameters have the same H264 profile (Baseline, High, +// etc). +RTC_EXPORT bool H264IsSameProfile(const SdpVideoFormat::Parameters& params1, + const SdpVideoFormat::Parameters& params2); + +} // namespace webrtc + +#endif // API_VIDEO_CODECS_H264_PROFILE_LEVEL_ID_H_ |