Function LLVMFuzzerTestOneInput

tools/target_dec_fuzzer.c:174–648

}

int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
    uint64_t maxpixels_per_frame = 4096 * 4096;
    uint64_t maxpixels;

    uint64_t maxsamples_per_frame = 256*1024*32;
    uint64_t maxsamples;
    const uint64_t fuzz_tag = FUZZ_TAG;
    const uint8_t *last = data;
    const uint8_t *end = data + size;
    uint32_t it = 0;
    uint64_t ec_pixels = 0;
    uint64_t nb_samples = 0;
    int (*decode_handler)(AVCodecContext *avctx, AVFrame *picture,
                          int *got_picture_ptr,
                          const AVPacket *avpkt) = NULL;
    AVCodecParserContext *parser = NULL;
    uint64_t keyframes = 0;
    uint64_t flushpattern = -1;
    AVDictionary *opts = NULL;

    if (!c) {
#ifdef FFMPEG_DECODER
#define DECODER_SYMBOL0(CODEC) ff_##CODEC##_decoder
#define DECODER_SYMBOL(CODEC) DECODER_SYMBOL0(CODEC)
        extern FFCodec DECODER_SYMBOL(FFMPEG_DECODER);
        codec_list[0] = &DECODER_SYMBOL(FFMPEG_DECODER);

        c = &DECODER_SYMBOL(FFMPEG_DECODER);
#else
        c = AVCodecInitialize(FFMPEG_CODEC);  // Done once.
#endif
        av_log_set_level(AV_LOG_PANIC);
    }

    switch (c->p.type) {
    case AVMEDIA_TYPE_AUDIO   :
    case AVMEDIA_TYPE_VIDEO   : decode_handler = audio_video_handler  ; break;
    case AVMEDIA_TYPE_SUBTITLE: decode_handler = subtitle_handler     ; break;
    }
    switch (c->p.id) {
    case AV_CODEC_ID_APE:       maxsamples_per_frame /= 256; break;
    }
    maxpixels = maxpixels_per_frame * maxiteration;
    maxsamples = maxsamples_per_frame * maxiteration;
    switch (c->p.id) {
    case AV_CODEC_ID_AASC:        maxpixels  /= 1024;  break;
    case AV_CODEC_ID_AGM:         maxpixels  /= 1024;  break;
    case AV_CODEC_ID_ANM:         maxpixels  /= 1024;  break;
    case AV_CODEC_ID_APE:         maxsamples /= 16384; break;
    case AV_CODEC_ID_ARBC:        maxpixels  /= 1024;  break;
    case AV_CODEC_ID_ARGO:        maxpixels  /= 1024;  break;
    case AV_CODEC_ID_BETHSOFTVID: maxpixels  /= 8192;  break;
    case AV_CODEC_ID_BFI:         maxpixels  /= 8192;  break;
    case AV_CODEC_ID_BINKVIDEO:   maxpixels  /= 32;    break;
    case AV_CODEC_ID_BONK:        maxsamples /= 1<<20; break;
    case AV_CODEC_ID_CAVS:        maxpixels  /= 1024;  break;
    case AV_CODEC_ID_CDTOONS:     maxpixels  /= 1024;  break;
    case AV_CODEC_ID_CFHD:        maxpixels  /= 16384; break;