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| author | Michael Niedermayer <michael@niedermayer.cc> | 2020-11-14 21:41:19 -0300 |
|---|---|---|
| committer | James Almer <jamrial@gmail.com> | 2020-11-20 12:43:51 -0300 |
| commit | cb59cd346656376975a1ee87e60e1ea9c3d29ceb (patch) | |
| tree | dc875a6d6847d50da50fa8f1ead6cff39de8c3db | |
| parent | 40dfb4328d12f782190d4e38abb443e705315ccd (diff) | |
| download | ffmpeg-cb59cd346656376975a1ee87e60e1ea9c3d29ceb.tar.gz | |
tools/target_dec_fuzzer: Call avcodec_flush_buffers() in a fuzzer choosen pattern
This should increase coverage
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: James Almer <jamrial@gmail.com>
| -rw-r--r-- | tools/target_dec_fuzzer.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/tools/target_dec_fuzzer.c b/tools/target_dec_fuzzer.c index 4eb59bd296..11530cbf79 100644 --- a/tools/target_dec_fuzzer.c +++ b/tools/target_dec_fuzzer.c @@ -110,6 +110,7 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) { const AVPacket *avpkt) = NULL; AVCodecParserContext *parser = NULL; uint64_t keyframes = 0; + uint64_t flushpattern = -1; AVDictionary *opts = NULL; if (!c) { @@ -239,6 +240,7 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) { ctx->request_channel_layout = bytestream2_get_le64(&gbc); ctx->idct_algo = bytestream2_get_byte(&gbc) % 25; + flushpattern = bytestream2_get_le64(&gbc); if (flags & 0x20) { switch (ctx->codec_id) { @@ -332,6 +334,10 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) { av_packet_move_ref(&avpkt, &parsepkt); } + if (!(flushpattern & 7)) + avcodec_flush_buffers(ctx); + flushpattern = (flushpattern >> 3) + (flushpattern << 61); + // Iterate through all data while (avpkt.size > 0 && it++ < maxiteration) { av_frame_unref(frame); |