[FFmpeg-cvslog] tools/target_dec_fuzzer: Use codec_tags list

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michael at niedermayer.cc> | Sun Dec 29 22:09:35 2019 +0100| [5f7727e1c9c33c26cc5caf06bfe83a96d2c107da] | committer: Michael Niedermayer

tools/target_dec_fuzzer: Use codec_tags list

This should make it much quicker for the fuzzer to test
real relevant codec_tags

Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=5f7727e1c9c33c26cc5caf06bfe83a96d2c107da
---

 tools/target_dec_fuzzer.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/tools/target_dec_fuzzer.c b/tools/target_dec_fuzzer.c
index 9f342ebde9..a3d784a019 100644
--- a/tools/target_dec_fuzzer.c
+++ b/tools/target_dec_fuzzer.c
@@ -213,6 +213,11 @@ 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) & 0x7FFFFFFF;
         ctx->codec_tag                          = bytestream2_get_le32(&gbc);
+        if (c->codec_tags) {
+            int n;
+            for (n = 0; c->codec_tags[n] != FF_CODEC_TAGS_END; n++);
+            ctx->codec_tag = c->codec_tags[ctx->codec_tag % n];
+        }
         keyframes                               = bytestream2_get_le64(&gbc);
         ctx->request_channel_layout             = bytestream2_get_le64(&gbc);