virtualenv/FFmpeg
1
0
Fork 0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2024-11-26 19:01:44 +02:00
Code Issues Releases Activity

tools/target_bsf_fuzzer: simplify the loop feeding packets to the filter

Browse Source 
And use a single AVPacket for the entire process.
This more closely follows the suggested API usage in the doxy.

Signed-off-by: James Almer <jamrial@gmail.com>
This commit is contained in:
James Almer 2022-02-23 21:38:30 -03:00
parent 7a4840a8ca
commit 4f21a9ae6b
1 changed files with 16 additions and 25 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

41
tools/target_bsf_fuzzer.c
View File

@ -43,7 +43,7 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
const uint8_t *last = data;
const uint8_t *end = data + size;
AVBSFContext *bsf = NULL;
AVPacket *in, *out;
AVPacket *pkt;
uint64_t keyframes = 0;
uint64_t flushpattern = -1;
int res;
@ -118,9 +118,8 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
return 0; // Failure of av_bsf_init() does not imply that a issue was found
}
in = av_packet_alloc();
out = av_packet_alloc();
if (!in || !out)
pkt = av_packet_alloc();
if (!pkt)
error("Failed memory allocation");
while (data < end) {
@ -133,11 +132,11 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
if (data + sizeof(fuzz_tag) > end)
data = end;
res = av_new_packet(in, data - last);
res = av_new_packet(pkt, data - last);
if (res < 0)
error("Failed memory allocation");
memcpy(in->data, last, data - last);
in->flags = (keyframes & 1) * AV_PKT_FLAG_DISCARD + (!!(keyframes & 2)) * AV_PKT_FLAG_KEY;
memcpy(pkt->data, last, data - last);
pkt->flags = (keyframes & 1) * AV_PKT_FLAG_DISCARD + (!!(keyframes & 2)) * AV_PKT_FLAG_KEY;
keyframes = (keyframes >> 2) + (keyframes<<62);
data += sizeof(fuzz_tag);
last = data;
@ -146,28 +145,20 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
av_bsf_flush(bsf);
flushpattern = (flushpattern >> 3) + (flushpattern << 61);
while (in->size) {
res = av_bsf_send_packet(bsf, in);
if (res < 0 && res != AVERROR(EAGAIN))
break;
res = av_bsf_receive_packet(bsf, out);
if (res < 0)
break;
av_packet_unref(out);
res = av_bsf_send_packet(bsf, pkt);
if (res < 0) {
av_packet_unref(pkt);
continue;
}
av_packet_unref(in);
while (av_bsf_receive_packet(bsf, pkt) >= 0)
av_packet_unref(pkt);
}
res = av_bsf_send_packet(bsf, NULL);
while (!res) {
res = av_bsf_receive_packet(bsf, out);
if (res < 0)
break;
av_packet_unref(out);
}
av_bsf_send_packet(bsf, NULL);
while (av_bsf_receive_packet(bsf, pkt) >= 0)
av_packet_unref(pkt);
av_packet_free(&in);
av_packet_free(&out);
av_packet_free(&pkt);
av_bsf_free(&bsf);
return 0;
}