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tools/target_dec_fuzzer: Use decoder and not codec_id as argument 

This allows fuzzing decoders with the same codec_id
We also avoid register all to allow the linker to prune unused sections and symbols

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2017-05-03 16:36:39 +02:00
parent 3f17751eeb
commit dec2fa8cc7
2 changed files with 15 additions and 3 deletions
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2
tools/Makefile
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@ -2,7 +2,7 @@ TOOLS = qt-faststart trasher uncoded_frame
TOOLS-$(CONFIG_ZLIB) += cws2fws TOOLS-$(CONFIG_ZLIB) += cws2fws
tools/target_dec_%_fuzzer.o: tools/target_dec_fuzzer.c tools/target_dec_%_fuzzer.o: tools/target_dec_fuzzer.c
$(COMPILE_C) -DFFMPEG_CODEC=AV_CODEC_ID_$* $(COMPILE_C) -DFFMPEG_DECODER=$*
OBJDIRS += tools OBJDIRS += tools

16
tools/target_dec_fuzzer.c
View File

@ -66,7 +66,7 @@ static AVCodec *c = NULL;
static AVCodec *AVCodecInitialize(enum AVCodecID codec_id) static AVCodec *AVCodecInitialize(enum AVCodecID codec_id)
{ {
AVCodec *res; AVCodec *res;
avcodec_register_all();
av_log_set_level(AV_LOG_PANIC); av_log_set_level(AV_LOG_PANIC);
res = avcodec_find_decoder(codec_id); res = avcodec_find_decoder(codec_id);
if (!res) if (!res)
@ -140,8 +140,20 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
int *got_picture_ptr, int *got_picture_ptr,
const AVPacket *avpkt) = NULL; const AVPacket *avpkt) = NULL;
if (!c) if (!c) {
#ifdef FFMPEG_DECODER
#define DECODER_SYMBOL0(CODEC) ff_##CODEC##_decoder
#define DECODER_SYMBOL(CODEC) DECODER_SYMBOL0(CODEC)
extern AVCodec DECODER_SYMBOL(FFMPEG_DECODER);
avcodec_register(&DECODER_SYMBOL(FFMPEG_DECODER));
int codec_id = DECODER_SYMBOL(FFMPEG_DECODER).id;
c = AVCodecInitialize(codec_id); // Done once.
#else
avcodec_register_all();
c = AVCodecInitialize(FFMPEG_CODEC); // Done once. c = AVCodecInitialize(FFMPEG_CODEC); // Done once.
#endif
}
switch (c->type) { switch (c->type) {
case AVMEDIA_TYPE_AUDIO : decode_handler = avcodec_decode_audio4; break; case AVMEDIA_TYPE_AUDIO : decode_handler = avcodec_decode_audio4; break;