static int decode_ref_pic_marking(H264Context *h, GetBitContext *gb){ MpegEncContext * const s = &h->s; int i; if(h->nal_unit_type == NAL_IDR_SLICE){ //FIXME fields s->broken_link= get_bits1(gb) -1; h->mmco[0].long_arg= get_bits1(gb) - 1; // current_long_term_idx if(h->mmco[0].long_arg == -1) else{ h->mmco[0].opcode= MMCO_LONG; h->mmco_index= 1; } }else{ if(get_bits1(gb)){ // adaptive_ref_pic_marking_mode_flag for(i= 0; i<MAX_MMCO_COUNT; i++) { MMCOOpcode opcode= get_ue_golomb(gb); h->mmco[i].opcode= opcode; if(opcode==MMCO_SHORT2UNUSED || opcode==MMCO_SHORT2LONG){ h->mmco[i].short_pic_num= (h->curr_pic_num - get_ue_golomb(gb) - 1) & (h->max_pic_num - 1); /* if(h->mmco[i].short_pic_num >= h->short_ref_count || h->short_ref[ h->mmco[i].short_pic_num ] == NULL){ av_log(s->avctx, AV_LOG_ERROR, "illegal short ref in memory management control operation %d\n", mmco); return -1; }*/ } if(opcode==MMCO_SHORT2LONG || opcode==MMCO_LONG2UNUSED || opcode==MMCO_LONG || opcode==MMCO_SET_MAX_LONG){ unsigned int long_arg= get_ue_golomb(gb); if(long_arg >= 32 || (long_arg >= 16 && !(opcode == MMCO_LONG2UNUSED && FIELD_PICTURE))){ av_log(h->s.avctx, AV_LOG_ERROR, "illegal long ref in memory management control operation %d\n", opcode); return -1; } h->mmco[i].long_arg= long_arg; } if(opcode > (unsigned)MMCO_LONG){ av_log(h->s.avctx, AV_LOG_ERROR, "illegal memory management control operation %d\n", opcode); return -1; } if(opcode == MMCO_END) break; } h->mmco_index= i; }else{ assert(h->long_ref_count + h->short_ref_count <= h->sps.ref_frame_count); if(h->short_ref_count && h->long_ref_count + h->short_ref_count == h->sps.ref_frame_count && !(FIELD_PICTURE && !s->first_field && s->current_picture_ptr->reference)) { h->mmco[0].opcode= MMCO_SHORT2UNUSED; h->mmco[0].short_pic_num= h->short_ref[ h->short_ref_count - 1 ]->frame_num; h->mmco_index= 1; if (FIELD_PICTURE) { h->mmco[0].short_pic_num *= 2; h->mmco[1].opcode= MMCO_SHORT2UNUSED; h->mmco[1].short_pic_num= h->mmco[0].short_pic_num + 1; h->mmco_index= 2; } }else } } return 0; }