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- // Copyright 2015 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_FORMATS_MP4_HEVC_H_
- #define MEDIA_FORMATS_MP4_HEVC_H_
- #include <stddef.h>
- #include <stdint.h>
- #include <memory>
- #include <vector>
- #include "media/base/media_export.h"
- #include "media/base/video_codecs.h"
- #include "media/formats/mp4/bitstream_converter.h"
- #include "media/formats/mp4/box_definitions.h"
- namespace media {
- struct SubsampleEntry;
- namespace mp4 {
- struct MEDIA_EXPORT HEVCDecoderConfigurationRecord : Box {
- DECLARE_BOX_METHODS(HEVCDecoderConfigurationRecord);
- // Parses HEVCDecoderConfigurationRecord data encoded in |data|.
- // Note: This method is intended to parse data outside the MP4StreamParser
- // context and therefore the box header is not expected to be present
- // in |data|.
- // Returns true if |data| was successfully parsed.
- bool Parse(const uint8_t* data, int data_size);
- uint8_t configurationVersion;
- uint8_t general_profile_space;
- uint8_t general_tier_flag;
- uint8_t general_profile_idc;
- uint32_t general_profile_compatibility_flags;
- uint64_t general_constraint_indicator_flags;
- uint8_t general_level_idc;
- uint16_t min_spatial_segmentation_idc;
- uint8_t parallelismType;
- uint8_t chromaFormat;
- uint8_t bitDepthLumaMinus8;
- uint8_t bitDepthChromaMinus8;
- uint16_t avgFrameRate;
- uint8_t constantFrameRate;
- uint8_t numTemporalLayers;
- uint8_t temporalIdNested;
- uint8_t lengthSizeMinusOne;
- uint8_t numOfArrays;
- typedef std::vector<uint8_t> HVCCNALUnit;
- struct HVCCNALArray {
- HVCCNALArray();
- HVCCNALArray(const HVCCNALArray& other);
- ~HVCCNALArray();
- uint8_t first_byte;
- std::vector<HVCCNALUnit> units;
- };
- std::vector<HVCCNALArray> arrays;
- VideoCodecProfile GetVideoProfile() const;
- #if BUILDFLAG(ENABLE_HEVC_PARSER_AND_HW_DECODER)
- VideoColorSpace GetColorSpace();
- #endif // BUILDFLAG(ENABLE_HEVC_PARSER_AND_HW_DECODER)
- private:
- bool ParseInternal(BufferReader* reader, MediaLog* media_log);
- };
- class MEDIA_EXPORT HEVC {
- public:
- static bool ConvertConfigToAnnexB(
- const HEVCDecoderConfigurationRecord& hevc_config,
- std::vector<uint8_t>* buffer);
- static bool InsertParamSetsAnnexB(
- const HEVCDecoderConfigurationRecord& hevc_config,
- std::vector<uint8_t>* buffer,
- std::vector<SubsampleEntry>* subsamples);
- // Analyzes the contents of |buffer| for conformance to
- // Section 7.4.2.4.4 of ISO/IEC 23008-2, and if conformant, further inspects
- // |buffer| to report whether or not it looks like a keyframe.
- // |subsamples| contains the information about what parts of the buffer are
- // encrypted and which parts are clear.
- static BitstreamConverter::AnalysisResult AnalyzeAnnexB(
- const uint8_t* buffer,
- size_t size,
- const std::vector<SubsampleEntry>& subsamples);
- };
- class HEVCBitstreamConverter : public BitstreamConverter {
- public:
- explicit HEVCBitstreamConverter(
- std::unique_ptr<HEVCDecoderConfigurationRecord> hevc_config);
- // BitstreamConverter interface
- bool ConvertAndAnalyzeFrame(std::vector<uint8_t>* frame_buf,
- bool is_keyframe,
- std::vector<SubsampleEntry>* subsamples,
- AnalysisResult* analysis_result) const override;
- private:
- ~HEVCBitstreamConverter() override;
- AnalysisResult Analyze(
- std::vector<uint8_t>* frame_buf,
- std::vector<SubsampleEntry>* subsamples) const override;
- std::unique_ptr<HEVCDecoderConfigurationRecord> hevc_config_;
- };
- } // namespace mp4
- } // namespace media
- #endif // MEDIA_FORMATS_MP4_HEVC_H_
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