Original commit message from CVS: * ext/a52dec/gsta52dec.c: (gst_a52dec_init), (gst_a52dec_sink_setcaps), (gst_a52dec_chain), (gst_a52dec_chain_raw): * ext/a52dec/gsta52dec.h: Accept AC3 in audio/x-private1-ac3 format, which includes DVD-specific headers, as well as raw AC3, for compatibility with some demuxers.