Function LLVMFuzzerTestOneInput

tools/target_swr_fuzzer.c:70–153

};

int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
    struct SwrContext * swr= NULL;
    AVChannelLayout in_ch_layout = AV_CHANNEL_LAYOUT_MONO, out_ch_layout = AV_CHANNEL_LAYOUT_MONO;
    enum AVSampleFormat  in_sample_fmt = AV_SAMPLE_FMT_S16P;
    enum AVSampleFormat out_sample_fmt = AV_SAMPLE_FMT_S16P;
    int  in_sample_rate = 44100;
    int out_sample_rate = 44100;
    int in_ch_count, out_ch_count;
    char  in_layout_string[256];
    char out_layout_string[256];
    uint8_t * ain[SWR_CH_MAX];
    uint8_t *aout[SWR_CH_MAX];
    uint8_t *out_data = NULL;
    int in_sample_nb;
    int out_sample_nb = size;
    int count;
    int ret;

    if (size > 128) {
        GetByteContext gbc;
        int64_t flags64;

        size -= 128;
        bytestream2_init(&gbc, data + size, 128);
         in_sample_rate = bytestream2_get_le16(&gbc) + 1;
        out_sample_rate = bytestream2_get_le16(&gbc) + 1;
         in_sample_fmt  = formats[bytestream2_get_byte(&gbc) % FF_ARRAY_ELEMS(formats)];
        out_sample_fmt  = formats[bytestream2_get_byte(&gbc) % FF_ARRAY_ELEMS(formats)];
        av_channel_layout_copy(& in_ch_layout,  &layouts[bytestream2_get_byte(&gbc) % FF_ARRAY_ELEMS(layouts)]);
        av_channel_layout_copy(&out_ch_layout,  &layouts[bytestream2_get_byte(&gbc) % FF_ARRAY_ELEMS(layouts)]);

        out_sample_nb = bytestream2_get_le32(&gbc) & 0x7FFFFFFF;

        flags64 = bytestream2_get_le64(&gbc);
        if (flags64 & 0x10)
            av_force_cpu_flags(0);
    }

     in_ch_count=  in_ch_layout.nb_channels;
    out_ch_count= out_ch_layout.nb_channels;
    av_channel_layout_describe(& in_ch_layout,  in_layout_string, sizeof( in_layout_string));
    av_channel_layout_describe(&out_ch_layout, out_layout_string, sizeof(out_layout_string));

    // fprintf(stderr, "%s %d %s -> %s %d %s\n",
    //         av_get_sample_fmt_name( in_sample_fmt),  in_sample_rate,  in_layout_string,
    //         av_get_sample_fmt_name(out_sample_fmt), out_sample_rate, out_layout_string);

    if (swr_alloc_set_opts2(&swr, &out_ch_layout, out_sample_fmt, out_sample_rate,
                                  &in_ch_layout,   in_sample_fmt,  in_sample_rate,
                                  0, 0) < 0) {
        fprintf(stderr, "Failed swr_alloc_set_opts2()\n");
        goto end;
    }

    if (swr_init(swr) < 0) {
        fprintf(stderr, "Failed swr_init()\n");
        goto end;
    }