void av_free(void *ptr)
{
#if CONFIG_MEMALIGN_HACK
    if (ptr)
        free((char *)ptr - ((char *)ptr)[-1]);
#elif HAVE_ALIGNED_MALLOC
    _aligned_free(ptr);
#else
    free(ptr);
#endif
}
['static int find_sample_match(const uint8_t *data, int len,\n                             HintSampleQueue *queue, int *pos,\n                             int *match_sample, int *match_offset,\n                             int *match_len)\n{\n    while (queue->len > 0) {\n        HintSample *sample = &queue->samples[0];\n        if (sample->offset == 0 && sample->size > 5)\n            sample->offset = 5;\n        if (match_segments(data, len, sample->data, sample->offset,\n                           sample->size, pos, match_offset, match_len) == 0) {\n            *match_sample = sample->sample_number;\n            sample->offset = *match_offset + *match_len + 5;\n            if (sample->offset + 10 >= sample->size)\n                sample_queue_pop(queue);\n            return 0;\n        }\n        if (sample->offset < 10 && sample->size > 20) {\n            sample->offset = sample->size/2;\n        } else {\n            sample_queue_pop(queue);\n        }\n    }\n    return -1;\n}', 'static void sample_queue_pop(HintSampleQueue *queue)\n{\n    if (queue->len <= 0)\n        return;\n    if (queue->samples[0].own_data)\n        av_free(queue->samples[0].data);\n    queue->len--;\n    memmove(queue->samples, queue->samples + 1, sizeof(HintSample)*queue->len);\n}', 'void av_free(void *ptr)\n{\n#if CONFIG_MEMALIGN_HACK\n    if (ptr)\n        free((char *)ptr - ((char *)ptr)[-1]);\n#elif HAVE_ALIGNED_MALLOC\n    _aligned_free(ptr);\n#else\n    free(ptr);\n#endif\n}']