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| 1 // Copyright 2017 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #include "media/formats/mp4/dolby_vision.h" |
| 6 |
| 7 #include "base/logging.h" |
| 8 #include "media/base/video_codecs.h" |
| 9 #include "media/formats/mp4/box_definitions.h" |
| 10 #include "media/formats/mp4/box_reader.h" |
| 11 |
| 12 namespace media { |
| 13 namespace mp4 { |
| 14 |
| 15 DolbyVisionConfiguration::DolbyVisionConfiguration() |
| 16 : dv_version_major(0), |
| 17 dv_version_minor(0), |
| 18 dv_profile(0), |
| 19 dv_level(0), |
| 20 rpu_present_flag(0), |
| 21 el_present_flag(0), |
| 22 bl_present_flag(0), |
| 23 codec_profile(VIDEO_CODEC_PROFILE_UNKNOWN) {} |
| 24 |
| 25 DolbyVisionConfiguration::~DolbyVisionConfiguration() {} |
| 26 |
| 27 FourCC DolbyVisionConfiguration::BoxType() const { |
| 28 return FOURCC_DVCC; |
| 29 } |
| 30 |
| 31 bool DolbyVisionConfiguration::Parse(BoxReader* reader) { |
| 32 return ParseInternal(reader, reader->media_log()); |
| 33 } |
| 34 |
| 35 bool DolbyVisionConfiguration::Parse(const uint8_t* data, int data_size) { |
| 36 BufferReader reader(data, data_size); |
| 37 return ParseInternal(&reader, new MediaLog()); |
| 38 } |
| 39 |
| 40 bool DolbyVisionConfiguration::ParseInternal( |
| 41 BufferReader* reader, |
| 42 const scoped_refptr<MediaLog>& media_log) { |
| 43 uint16_t profile_track_indication = 0; |
| 44 RCHECK(reader->Read1(&dv_version_major) && reader->Read1(&dv_version_minor) && |
| 45 reader->Read2(&profile_track_indication)); |
| 46 |
| 47 dv_profile = profile_track_indication >> 9; |
| 48 dv_level = (profile_track_indication >> 3) & 0x3F; |
| 49 rpu_present_flag = (profile_track_indication >> 2) & 1; |
| 50 el_present_flag = (profile_track_indication >> 1) & 1; |
| 51 bl_present_flag = profile_track_indication & 1; |
| 52 |
| 53 switch (dv_profile) { |
| 54 case 0: |
| 55 codec_profile = DOLBYVISION_PROFILE0; |
| 56 break; |
| 57 case 4: |
| 58 codec_profile = DOLBYVISION_PROFILE4; |
| 59 break; |
| 60 case 5: |
| 61 codec_profile = DOLBYVISION_PROFILE5; |
| 62 break; |
| 63 case 7: |
| 64 codec_profile = DOLBYVISION_PROFILE7; |
| 65 break; |
| 66 default: |
| 67 DVLOG(2) << "Deprecated or invalid Dolby Vision profile:" |
| 68 << static_cast<int>(dv_profile); |
| 69 return false; |
| 70 } |
| 71 |
| 72 DVLOG(2) << "Dolby Vision profile:" << static_cast<int>(dv_profile) |
| 73 << " level:" << static_cast<int>(dv_level) |
| 74 << " has_bl:" << static_cast<int>(bl_present_flag) |
| 75 << " has_el:" << static_cast<int>(el_present_flag) |
| 76 << " has_rpu:" << static_cast<int>(rpu_present_flag) |
| 77 << " profile type:" << codec_profile; |
| 78 |
| 79 return true; |
| 80 } |
| 81 |
| 82 } // namespace mp4 |
| 83 } // namespace media |
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