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fix VP9 frame state after parse failure

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YuLi
2026-07-25 00:00:47 -07:00
parent 18c1a99cb0
commit 394fa8387b
2 changed files with 28 additions and 0 deletions
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26
tests/test_vp9_rtp.cpp
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@@ -59,6 +59,31 @@ void runCase(const ParseCase &test) {
}
}
void testParseFailureDropsCurrentFrame() {
VP9RtpDecoder decoder;
std::vector<std::string> frames;
decoder.addDelegate([&](const Frame::Ptr &frame) {
frames.emplace_back(frame->data(), frame->size());
return true;
});
RtpInfo rtp_info(0x12345678, 1400, 90000, 98, 0, 0);
auto input = [&](const std::vector<unsigned char> &payload, bool mark) {
auto rtp = rtp_info.makeRtp(TrackVideo, payload.data(), payload.size(), mark, 100);
require(rtp != nullptr, "failed to create RTP packet for parse-failure recovery test");
decoder.inputRtp(rtp, false);
};
input({ 0x08, 0x80, 0x11 }, false); // B: begin assembling a frame.
input({ 0x50, 0x03 }, false); // Truncated P_DIFF chain.
input({ 0x04, 0x22 }, true); // E: must not emit the incomplete frame.
require(frames.empty(), "parse failure emitted a partial VP9 frame");
input({ 0x0C, 0x80, 0x33 }, true); // A new complete frame must recover normally.
require(frames.size() == 1, "decoder did not recover after a VP9 parse failure");
require(frames[0] == std::string("\x80\x33", 2), "recovered VP9 frame payload does not match");
}
} // namespace
int main() {
@@ -94,5 +119,6 @@ int main() {
runCase({ "descriptor only", { 0x00 }, -1 });
runCase({ "layer descriptor only", { 0x30, 0x00 }, -1 });
testParseFailureDropsCurrentFrame();
return 0;
}