2020-06-08 03:29:51 +03:00
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package mpeg
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import (
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2021-08-17 13:06:32 +03:00
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"github.com/wader/fq/format"
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"github.com/wader/fq/format/registry"
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"github.com/wader/fq/pkg/decode"
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2020-06-08 03:29:51 +03:00
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)
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func init() {
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registry.MustRegister(&decode.Format{
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Name: format.HEVC_NALU,
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Description: "H.265/HEVC Network Access Layer Unit",
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DecodeFn: hevcNALUDecode,
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Dependencies: []decode.Dependency{},
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})
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}
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var hevcNALNames = map[uint64]string{
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0: "TRAIL_N",
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1: "TRAIL_R",
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2: "TSA_N",
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3: "TSA_R",
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4: "STSA_N",
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5: "STSA_R",
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6: "RADL_N",
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7: "RADL_R",
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8: "RASL_N",
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9: "RASL_R",
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10: "RSV_VCL_N10",
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12: "RSV_VCL_N12",
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14: "RSV_VCL_N14",
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11: "RSV_VCL_R11",
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13: "RSV_VCL_R13",
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15: "RSV_VCL_R15",
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16: "BLA_W_LP",
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17: "BLA_W_RADL",
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18: "BLA_N_LP",
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19: "IDR_W_RADL",
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20: "IDR_N_LP",
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21: "CRA_NUT",
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22: "RSV_IRAP_VCL22",
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23: "RSV_IRAP_VCL23",
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24: "RSV_VCL24",
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25: "RSV_VCL25",
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26: "RSV_VCL26",
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27: "RSV_VCL27",
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28: "RSV_VCL28",
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29: "RSV_VCL29",
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30: "RSV_VCL30",
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31: "RSV_VCL31",
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32: "VPS_NUT",
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33: "SPS_NUT",
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34: "PPS_NUT",
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35: "AUD_NUT",
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36: "EOS_NUT",
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37: "EOB_NUT",
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38: "FD_NUT",
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39: "PREFIX_SEI_NUT",
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40: "SUFFIX_SEI_NUT",
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41: "RSV_NVCL41",
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42: "RSV_NVCL42",
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43: "RSV_NVCL43",
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44: "RSV_NVCL44",
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45: "RSV_NVCL45",
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46: "RSV_NVCL46",
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47: "RSV_NVCL47",
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}
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func hevcNALUDecode(d *decode.D, in interface{}) interface{} {
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d.FieldBool("forbidden_zero_bit")
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nalType, _ := d.FieldStringMapFn("nal_unit_type", hevcNALNames, "Unknown", d.U6, decode.NumberDecimal)
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d.FieldU6("nuh_layer_id")
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d.FieldU3("nuh_temporal_id_plus1")
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unescapedBb := decode.MustNewBitBufFromReader(decode.NALUnescapeReader{Reader: d.BitBufRange(d.Pos(), d.BitsLeft())})
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_ = unescapedBb
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_ = nalType
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d.FieldBitBufLen("data", d.BitsLeft())
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return nil
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}
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