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Add the rest of H264 NAL unit names #413

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Add the rest of H264 NAL unit names #413

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66 changes: 55 additions & 11 deletions lib/codecs/h264.js
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Original file line number Diff line number Diff line change
Expand Up @@ -158,6 +158,59 @@ PROFILES_WITH_OPTIONAL_SPS_DATA = {
134: true
};

function getNalUnitType(nalUnitTypeCode){
switch (nalUnitTypeCode) {
case 0x01:
return 'slice_layer_without_partitioning_rbsp';
case 0x02:
return 'slice_data_partition_a_layer_rbsp';
case 0x03:
return 'slice_data_partition_b_layer_rbsp';
case 0x04:
return 'slice_data_partition_b_layer_rbsp';
case 0x05:
return 'slice_layer_without_partitioning_rbsp_idr';
case 0x06:
return 'sei_rbsp';
case 0x07:
return 'seq_parameter_set_rbsp';
case 0x08:
return 'pic_parameter_set_rbsp';
case 0x09:
return 'access_unit_delimiter_rbsp';
case 0x0a:
return 'end_of_seq_rbsp';
case 0x0b:
return 'end_of_stream_rbsp';
case 0x0c:
return 'filler_data_rbsp';
case 0x0d:
return 'seq_parameter_set_extension_rbsp';
case 0x0e:
return 'prefix_nal_unit_rbsp';
case 0x0f:
return 'subset_seq_parameter_set_rbsp';
case 0x10:
return 'depth_parameter_set_rbsp';
case 0x11:
return 'reserved';
case 0x12:
return 'reserved';
case 0x13:
return 'slice_layer_without_partitioning_rbsp';
case 0x14:
return 'slice_layer_extension_rbsp';
case 0x15:
return 'slice_layer_extension_rbsp';
case 0x16:
return 'reserved';
case 0x17:
return 'reserved';
default:
return null;
}
}

/**
* Accepts input from a ElementaryStream and produces H.264 NAL unit data
* events.
Expand Down Expand Up @@ -216,26 +269,17 @@ H264Stream = function() {
data: data,
nalUnitTypeCode: data[0] & 0x1f
};

event.nalUnitType = getNalUnitType(event.nalUnitTypeCode)

switch (event.nalUnitTypeCode) {
case 0x05:
event.nalUnitType = 'slice_layer_without_partitioning_rbsp_idr';
break;
case 0x06:
event.nalUnitType = 'sei_rbsp';
event.escapedRBSP = discardEmulationPreventionBytes(data.subarray(1));
break;
case 0x07:
event.nalUnitType = 'seq_parameter_set_rbsp';
event.escapedRBSP = discardEmulationPreventionBytes(data.subarray(1));
event.config = readSequenceParameterSet(event.escapedRBSP);
break;
case 0x08:
event.nalUnitType = 'pic_parameter_set_rbsp';
break;
case 0x09:
event.nalUnitType = 'access_unit_delimiter_rbsp';
break;
default:
break;
}
Expand Down