1 // Copyright (c) 2016 The WebM project authors. All Rights Reserved. 2 // 3 // Use of this source code is governed by a BSD-style license 4 // that can be found in the LICENSE file in the root of the source 5 // tree. An additional intellectual property rights grant can be found 6 // in the file PATENTS. All contributing project authors may 7 // be found in the AUTHORS file in the root of the source tree. 8 #ifndef LIBWEBM_COMMON_HDR_UTIL_H_ 9 #define LIBWEBM_COMMON_HDR_UTIL_H_ 10 11 #include <stdint.h> 12 13 #include <memory> 14 15 #include "mkvmuxer/mkvmuxer.h" 16 17 namespace mkvparser { 18 struct Colour; 19 struct MasteringMetadata; 20 struct PrimaryChromaticity; 21 } // namespace mkvparser 22 23 namespace libwebm { 24 // Utility types and functions for working with the Colour element and its 25 // children. Copiers return true upon success. Presence functions return true 26 // when the specified element is present. 27 28 // TODO(tomfinegan): These should be moved to libwebm_utils once c++11 is 29 // required by libwebm. 30 31 // Features of the VP9 codec that may be set in the CodecPrivate of a VP9 video 32 // stream. A value of kValueNotPresent represents that the value was not set in 33 // the CodecPrivate. 34 struct Vp9CodecFeatures { 35 static const int kValueNotPresent; 36 Vp9CodecFeaturesVp9CodecFeatures37 Vp9CodecFeatures() 38 : profile(kValueNotPresent), 39 level(kValueNotPresent), 40 bit_depth(kValueNotPresent), 41 chroma_subsampling(kValueNotPresent) {} ~Vp9CodecFeaturesVp9CodecFeatures42 ~Vp9CodecFeatures() {} 43 44 int profile; 45 int level; 46 int bit_depth; 47 int chroma_subsampling; 48 }; 49 50 typedef std::unique_ptr<mkvmuxer::PrimaryChromaticity> PrimaryChromaticityPtr; 51 52 bool CopyPrimaryChromaticity(const mkvparser::PrimaryChromaticity& parser_pc, 53 PrimaryChromaticityPtr* muxer_pc); 54 55 bool MasteringMetadataValuePresent(double value); 56 57 bool CopyMasteringMetadata(const mkvparser::MasteringMetadata& parser_mm, 58 mkvmuxer::MasteringMetadata* muxer_mm); 59 60 bool ColourValuePresent(long long value); 61 62 bool CopyColour(const mkvparser::Colour& parser_colour, 63 mkvmuxer::Colour* muxer_colour); 64 65 // Returns true if |features| is set to one or more valid values. 66 bool ParseVpxCodecPrivate(const uint8_t* private_data, int32_t length, 67 Vp9CodecFeatures* features); 68 69 } // namespace libwebm 70 71 #endif // LIBWEBM_COMMON_HDR_UTIL_H_ 72