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Work around AJA SDK truncating ADF packets in SD modes when writing to TALL frames

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ADF packets that are not a multiple of 12 large are truncated at the end
in SD modes. Instead of directly converting all the packets at once like
for non-SD modes, do the conversion (partially) manually.
This commit is contained in:
Sebastian Dröge 2021-03-05 17:56:27 +02:00
parent 6deeb2389e
commit 195ffb2101
1 changed files with 27 additions and 1 deletions
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28
gstajasink.cpp
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@ -1266,7 +1266,33 @@ static GstFlowReturn gst_aja_sink_render(GstBaseSink *bsink,
} else {
NTV2_POINTER ptr(item.video_map.data, item.video_map.size);
anc_packet_list.GetVANCTransmitData(ptr, format_desc);
// Work around bug in GetVANCTransmitData() for SD formats that
// truncates ADF packets that are not a multiple of 12 words long.
//
// See AJA SDK support ticket #4845.
if (format_desc.IsSDFormat()) {
guint32 n_vanc_packets = anc_packet_list.CountAncillaryData();
for (guint32 i = 0; i < n_vanc_packets; i++) {
AJAAncillaryData *packet = anc_packet_list.GetAncillaryDataAtIndex(i);
ULWord line_offset = 0;
if (!format_desc.GetLineOffsetFromSMPTELine(
packet->GetLocationLineNumber(), line_offset))
continue;
UWordSequence data;
if (packet->GenerateTransmitData(data) != AJA_STATUS_SUCCESS)
continue;
// Pad to a multiple of 12 words
while (data.size() < 12 || data.size() % 12 != 0)
data.push_back(0x040);
::YUVComponentsTo10BitYUVPackedBuffer(data, ptr, format_desc,
line_offset);
}
} else {
anc_packet_list.GetVANCTransmitData(ptr, format_desc);
}
}
}