41     AVCodecParameters *par;  in hca_read_header()  local
62     par = st->codecpar;  in hca_read_header()
63     ret = ff_alloc_extradata(par, s->internal->data_offset);  in hca_read_header()
67     ret = avio_read(pb, par->extradata + 8, par->extradata_size - 8);  in hca_read_header()
68     if (ret < par->extradata_size - 8)  in hca_read_header()
70     AV_WL32(par->extradata, MKTAG('H', 'C', 'A', 0));  in hca_read_header()
71     AV_WB16(par->extradata + 4, version);  in hca_read_header()
72     AV_WB16(par->extradata + 6, s->internal->data_offset);  in hca_read_header()
74     bytestream2_init(&gb, par->extradata + 8, par->extradata_size - 8);  in hca_read_header()
79     par->codec_type  = AVMEDIA_TYPE_AUDIO;  in hca_read_header()
80     par->codec_id    = AV_CODEC_ID_HCA;  in hca_read_header()
81     par->codec_tag   = 0;  in hca_read_header()
82     par->channels    = bytestream2_get_byte(&gb);  in hca_read_header()
83     par->sample_rate = bytestream2_get_be24(&gb);  in hca_read_header()
97     par->block_align = block_size;  in hca_read_header()
101     avpriv_set_pts_info(st, 64, 1, par->sample_rate);  in hca_read_header()
108     AVCodecParameters *par = s->streams[0]->codecpar;  in hca_read_packet()  local
111     ret = av_get_packet(s->pb, pkt, par->block_align);  in hca_read_packet()