Function avifEncoderFindExistingChunk

src/write.c:2163–2177

}

static size_t avifEncoderFindExistingChunk(avifRWStream * s, size_t mdatStartOffset, const uint8_t * data, size_t size)
{
    const size_t mdatCurrentOffset = avifRWStreamOffset(s);
    const size_t mdatSearchSize = mdatCurrentOffset - mdatStartOffset;
    if (mdatSearchSize < size) {
        return 0;
    }
    const size_t mdatEndSearchOffset = mdatCurrentOffset - size;
    for (size_t searchOffset = mdatStartOffset; searchOffset <= mdatEndSearchOffset; ++searchOffset) {
        if (!memcmp(data, &s->raw->data[searchOffset], size)) {
            return searchOffset;
        }
    }
    return 0;
}

static avifResult avifEncoderWriteMediaDataBox(avifEncoder * encoder,
                                               avifRWStream * s,