blob: 7ec661ab578fa0bb8078603244eba943d9a7362f [file] [log] [blame]
// 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.
#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 {
// 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(const HVCCNALArray& other);
uint8_t first_byte;
std::vector<HVCCNALUnit> units;
std::vector<HVCCNALArray> arrays;
VideoCodecProfile GetVideoProfile() const;
bool ParseInternal(BufferReader* reader, MediaLog* media_log);
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 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 {
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;
~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