oss-fuzz/projects/libpng-proto/png_fuzz_proto.proto

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Protocol Buffer

syntax = "proto2";
// Very simple proto description of the PNG format,
// described at https://en.wikipedia.org/wiki/Portable_Network_Graphics
message IHDR {
required uint32 width = 1;
required uint32 height = 2;
required uint32 other1 = 3;
required uint32 other2 = 4; // Only 1 byte used.
}
message PLTE {
required bytes data = 1;
}
message IDAT {
required bytes data = 1;
}
message OtherChunk {
oneof type {
uint32 known_type = 1;
uint32 unknown_type = 2;
}
required bytes data = 3;
}
message PngChunk {
oneof chunk {
PLTE plte = 1;
IDAT idat = 2;
OtherChunk other_chunk = 10000;
}
}
message PngProto {
required IHDR ihdr = 1;
repeated PngChunk chunks = 2;
}
// package fuzzer_examples;