| // Copyright 2018 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. |
| |
| #ifndef MEDIA_VIDEO_H264_LEVEL_LIMITS_H_ |
| #define MEDIA_VIDEO_H264_LEVEL_LIMITS_H_ |
| |
| #include <stddef.h> |
| |
| #include "media/base/media_export.h" |
| #include "media/base/video_codecs.h" |
| |
| namespace media { |
| |
| // Get max macroblock processing rate in macroblocks per second (MaxMBPS) from |
| // level. The abbreviation is as per spec table A-1. |
| uint32_t MEDIA_EXPORT H264LevelToMaxMBPS(uint8_t level); |
| |
| // Get max frame size in macroblocks (MaxFS) from level. The abbreviation is as |
| // per spec table A-1. |
| uint32_t MEDIA_EXPORT H264LevelToMaxFS(uint8_t level); |
| |
| // Get max decoded picture buffer size in macroblocks (MaxDpbMbs) from level. |
| // The abbreviation is as per spec table A-1. |
| uint32_t MEDIA_EXPORT H264LevelToMaxDpbMbs(uint8_t level); |
| |
| // Get max video bitrate in kbit per second (MaxBR) from profile and level. The |
| // abbreviation is as per spec table A-1. |
| uint32_t MEDIA_EXPORT H264ProfileLevelToMaxBR(VideoCodecProfile profile, |
| uint8_t level); |
| |
| // Check whether |bitrate|, |framerate|, and |framesize_in_mbs| are valid from |
| // the limits of |profile| and |level| from Table A-1 in spec. |
| bool MEDIA_EXPORT CheckH264LevelLimits(VideoCodecProfile profile, |
| uint8_t level, |
| uint32_t bitrate, |
| uint32_t framerate, |
| uint32_t framesize_in_mbs); |
| |
| } // namespace media |
| |
| #endif // MEDIA_VIDEO_H264_LEVEL_LIMITS_H_ |