-int ff_ac3_parse_header_full(GetBitContext *gbc, AC3HeaderInfo *hdr){
- int ret, i;
- ret = ff_ac3_parse_header(gbc, hdr);
- if(!ret){
- if(hdr->bitstream_id>10){
- /* Enhanced AC-3 */
- skip_bits(gbc, 5); // skip bitstream id
-
- /* skip dialog normalization and compression gain */
- for (i = 0; i < (hdr->channel_mode ? 1 : 2); i++) {
- skip_bits(gbc, 5); // skip dialog normalization
- if (get_bits1(gbc)) {
- skip_bits(gbc, 8); //skip Compression gain word
- }
- }
- /* dependent stream channel map */
- if (hdr->frame_type == EAC3_FRAME_TYPE_DEPENDENT && get_bits1(gbc)) {
- hdr->channel_map = get_bits(gbc, 16); //custom channel map
- return 0;
- }
- }
- //default channel map based on acmod and lfeon
- hdr->channel_map = ff_eac3_default_chmap[hdr->channel_mode];
- if(hdr->lfe_on)
- hdr->channel_map |= AC3_CHMAP_LFE;
- }
- return ret;
-}
-