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tools/target_dec_fuzzer: Call avcodec_flush_buffers() in a fuzzer choosen pattern

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This should increase coverage

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: James Almer <jamrial@gmail.com>
This commit is contained in:
Michael Niedermayer 2020-11-14 21:41:19 -03:00 committed by James Almer
parent 40dfb4328d
commit cb59cd3466
1 changed files with 6 additions and 0 deletions
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6
tools/target_dec_fuzzer.c
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@ -110,6 +110,7 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
const AVPacket *avpkt) = NULL; const AVPacket *avpkt) = NULL;
AVCodecParserContext *parser = NULL; AVCodecParserContext *parser = NULL;
uint64_t keyframes = 0; uint64_t keyframes = 0;
uint64_t flushpattern = -1;
AVDictionary *opts = NULL; AVDictionary *opts = NULL;
if (!c) { if (!c) {
@ -239,6 +240,7 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
ctx->request_channel_layout = bytestream2_get_le64(&gbc); ctx->request_channel_layout = bytestream2_get_le64(&gbc);
ctx->idct_algo = bytestream2_get_byte(&gbc) % 25; ctx->idct_algo = bytestream2_get_byte(&gbc) % 25;
flushpattern = bytestream2_get_le64(&gbc);
if (flags & 0x20) { if (flags & 0x20) {
switch (ctx->codec_id) { switch (ctx->codec_id) {
@ -332,6 +334,10 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
av_packet_move_ref(&avpkt, &parsepkt); av_packet_move_ref(&avpkt, &parsepkt);
} }
if (!(flushpattern & 7))
avcodec_flush_buffers(ctx);
flushpattern = (flushpattern >> 3) + (flushpattern << 61);
// Iterate through all data // Iterate through all data
while (avpkt.size > 0 && it++ < maxiteration) { while (avpkt.size > 0 && it++ < maxiteration) {
av_frame_unref(frame); av_frame_unref(frame);