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tools/target_dec_fuzzer: Also fuzz keyframe & disposal flags

This should improve coverage

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
tags/n4.3
Michael Niedermayer 5 years ago
parent
commit
ec9d48da19
1 changed files with 4 additions and 0 deletions
  1. +4
    -0
      tools/target_dec_fuzzer.c

+ 4
- 0
tools/target_dec_fuzzer.c View File

@@ -109,6 +109,7 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
int *got_picture_ptr,
const AVPacket *avpkt) = NULL;
AVCodecParserContext *parser = NULL;
uint64_t keyframes = 0;


if (!c) {
@@ -191,6 +192,7 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
ctx->channels = (unsigned)bytestream2_get_le32(&gbc) % FF_SANE_NB_CHANNELS;
ctx->block_align = bytestream2_get_le32(&gbc);
ctx->codec_tag = bytestream2_get_le32(&gbc);
keyframes = bytestream2_get_le64(&gbc);

if (extradata_size < size) {
ctx->extradata = av_mallocz(extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
@@ -236,6 +238,8 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
if (res < 0)
error("Failed memory allocation");
memcpy(parsepkt.data, last, data - last);
parsepkt.flags = (keyframes & 1) * AV_PKT_FLAG_DISCARD + (!!(keyframes & 2)) * AV_PKT_FLAG_KEY;
keyframes = (keyframes >> 2) + (keyframes<<62);
data += sizeof(fuzz_tag);
last = data;



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