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tools/target_dec_fuzzer: Fuzz video decoder related fields in context.

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Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2017-04-19 22:58:27 +02:00
parent c6aaf0840c
commit 164758a831
1 changed files with 13 additions and 0 deletions
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13
tools/target_dec_fuzzer.c
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@ -49,6 +49,7 @@
#include "libavutil/intreadwrite.h"
#include "libavcodec/avcodec.h"
#include "libavcodec/bytestream.h"
#include "libavformat/avformat.h"
static void error(const char *err)
@ -151,6 +152,18 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
ctx->max_pixels = 4096 * 4096; //To reduce false positive OOM and hangs
if (size > 1024) {
GetByteContext gbc;
bytestream2_init(&gbc, data + size - 1024, 1024);
ctx->width = bytestream2_get_le32(&gbc);
ctx->height = bytestream2_get_le32(&gbc);
ctx->bit_rate = bytestream2_get_le64(&gbc);
ctx->bits_per_coded_sample = bytestream2_get_le32(&gbc);
if (av_image_check_size(ctx->width, ctx->height, 0, ctx))
ctx->width = ctx->height = 0;
size -= 1024;
}
int res = avcodec_open2(ctx, c, NULL);
if (res < 0)
return res;