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Fix large frame header size for GFE 3.26

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This commit is contained in:
Cameron Gutman
2022-09-22 21:51:11 -05:00
parent 50603ac16e
commit 54825845e7
1 changed files with 18 additions and 7 deletions
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25
src/VideoDepacketizer.c
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@@ -697,13 +697,24 @@ static void processRtpPayload(PNV_VIDEO_PACKET videoPacket, int length,
// If this is the first packet, skip the frame header (if one exists)
if (firstPacket) {
if (APP_VERSION_AT_LEAST(7, 1, 415)) {
// >= 7.1.415
// The first IDR frame now has smaller headers than the rest. We seem to be able to tell
// them apart by looking at the first byte. It will be 0x81 for the long header and 0x01
// for the short header.
// TODO: This algorithm seems to actually work on GFE 3.18 (first byte always 0x01), so
// maybe we could unify this codepath in the future.
if (APP_VERSION_AT_LEAST(7, 1, 446)) {
// >= 7.1.446 uses 2 different header lengths based on the first byte:
// 0x01 indicates an 8 byte header
// 0x81 indicates a 41 byte header
if (currentPos.data[0] == 0x01) {
currentPos.offset += 8;
currentPos.length -= 8;
}
else {
LC_ASSERT(currentPos.data[0] == (char)0x81);
currentPos.offset += 41;
currentPos.length -= 41;
}
}
else if (APP_VERSION_AT_LEAST(7, 1, 415)) {
// [7.1.415, 7.1.446) uses 2 different header lengths based on the first byte:
// 0x01 indicates an 8 byte header
// 0x81 indicates a 24 byte header
if (currentPos.data[0] == 0x01) {
currentPos.offset += 8;
currentPos.length -= 8;