PeerStreamer

    DCA_EXT_EXSS_XLL   = 0x200, ///< lossless extension in ExSS

};

/* Tables for mapping dts channel configurations to libavcodec multichannel api.

 * Some compromises have been made for special configurations. Most configurations

 * are never used so complete accuracy is not needed.

    int current_subframe;

    int current_subsubframe;

    /* XCh extension information */

    int xch_base_channel;       ///< index of first (only) channel containing XCH data

    /* ExSS header parser */

    int static_fields;          ///< static fields present

    int mix_metadata;           ///< mixing metadata present

    if (!(extensions_mask & DCA_EXT_CORE))

        av_log(s->avctx, AV_LOG_WARNING, "DTS core detection mismatch.\n");

    return 0;

}

    s->xch_present = 0;

    s->dca_buffer_size = dca_convert_bitstream(buf, buf_size, s->dca_buffer,

                                               DCA_MAX_FRAME_SIZE + DCA_MAX_EXSS_HEADER_SIZE);

    /* record number of core channels incase less than max channels are requested */

    num_core_channels = s->prim_channels;

    core_ss_end = FFMIN(s->frame_size, s->dca_buffer_size) * 8;

    while(core_ss_end - get_bits_count(&s->gb) >= 32) {

        uint32_t bits = get_bits_long(&s->gb, 32);

            /* skip length-to-end-of-frame field for the moment */

            skip_bits(&s->gb, 10);

            /* extension amode should == 1, number of channels in extension */

            /* AFAIK XCh is not used for more channels */

            /* XXCh: extended channels */

            /* usually found either in core or HD part in DTS-HD HRA streams,

             * but not in DTS-ES which contains XCh extensions instead */

            break;

        case 0x1d95f262: {

            av_log(avctx, AV_LOG_DEBUG, "FSIZE96 = %d bytes\n", fsize96);

            av_log(avctx, AV_LOG_DEBUG, "REVNO = %d\n", get_bits(&s->gb, 4));

            break;

        }

        }

        skip_bits_long(&s->gb, (-get_bits_count(&s->gb)) & 31);

    }

    /* check for ExSS (HD part) */

    if (s->dca_buffer_size - s->frame_size > 32

        && get_bits_long(&s->gb, 32) == DCA_HD_MARKER)