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fix: set array_completeness in HEVCDecoderConfigurationRecord correctly (#975) 

ISO/IEC 14496-15 says about the `HEVCDecoderConfigurationRecord`:

> **array_completeness** when equal to 1 indicates that all NAL units of
> the given type are in the following array and none are in the stream; 
> when equal to 0 indicates that additional NAL units of the indicated type 
> may be in the stream; the default and permitted values are constrained 
> by the sample entry name;

This PR sets `array_completeness` to 0 if parameter NAL units may appear
in the stream when they are not stripped by
`--strip_parameter_set_nalus`.

This should increase player-compatibiltity for streams with mid-stream
SAR changes.

---------

Co-authored-by: Cosmin Stejerean <cstejerean@meta.com>
This commit is contained in:
Marcus Wichelmann 2024-02-15 07:10:23 +01:00 committed by GitHub
parent f73ad0d961
commit 270888abb1
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GPG Key ID: B5690EEEBB952194
1 changed files with 7 additions and 4 deletions
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11
packager/media/codecs/h265_byte_to_unit_stream_converter.cc
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@ -74,21 +74,24 @@ bool H265ByteToUnitStreamConverter::GetDecoderConfigurationRecord(
buffer.AppendInt(static_cast<uint8_t>(kUnitStreamNaluLengthSize - 1));
buffer.AppendInt(static_cast<uint8_t>(3) /* numOfArrays */);
// More parameter set NALUs may follow when strip_parameter_set_nalus is
// disabled.
const uint8_t array_completeness = strip_parameter_set_nalus() ? 0x80 : 0;
// VPS
const uint8_t kArrayCompleteness = 0x80;
buffer.AppendInt(static_cast<uint8_t>(kArrayCompleteness | Nalu::H265_VPS));
buffer.AppendInt(static_cast<uint8_t>(array_completeness | Nalu::H265_VPS));
buffer.AppendInt(static_cast<uint16_t>(1) /* numNalus */);
buffer.AppendInt(static_cast<uint16_t>(last_vps_.size()));
buffer.AppendVector(last_vps_);
// SPS
buffer.AppendInt(static_cast<uint8_t>(kArrayCompleteness | Nalu::H265_SPS));
buffer.AppendInt(static_cast<uint8_t>(array_completeness | Nalu::H265_SPS));
buffer.AppendInt(static_cast<uint16_t>(1) /* numNalus */);
buffer.AppendInt(static_cast<uint16_t>(last_sps_.size()));
buffer.AppendVector(last_sps_);
// PPS
buffer.AppendInt(static_cast<uint8_t>(kArrayCompleteness | Nalu::H265_PPS));
buffer.AppendInt(static_cast<uint8_t>(array_completeness | Nalu::H265_PPS));
buffer.AppendInt(static_cast<uint16_t>(1) /* numNalus */);
buffer.AppendInt(static_cast<uint16_t>(last_pps_.size()));
buffer.AppendVector(last_pps_);