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/* |
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ROHC Project 2003 at Lulea University of Technology, Sweden. |
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Authors: Andreas Vernersson <andver-8@student.luth.se> |
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Daniel Pettersson <danpet-7@student.luth.se> |
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Erik Soderstrom <soderstrom@yahoo.com> |
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Fredrik Lindstrom <frelin-9@student.luth.se> |
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Johan Stenmark <johste-8@student.luth.se> |
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Martin Juhlin <juhlin@users.sourceforge.net> |
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Mikael Larsson <larmik-9@student.luth.se> |
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Robert Maxe <robmax-1@student.luth.se> |
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|
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Copyright (C) 2003 Andreas Vernersson, Daniel Pettersson, |
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Erik Soderström, Fredrik Lindström, Johan Stenmark, |
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Martin Juhlin, Mikael Larsson, Robert Maxe. |
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|
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This program is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 2 of the License, or |
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(at your option) any later version. |
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|
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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|
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You should have received a copy of the GNU General Public License |
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along with this program; if not, write to the Free Software |
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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//---------------------------------------------------------------------------------------------------------------------------------- |
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#ifndef _DECOMP_H |
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#define _DECOMP_H |
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//---------------------------------------------------------------------------------------------------------------------------------- |
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#include "rohc.h" |
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#include "d_util.h" |
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#include "comp.h" |
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|
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#define D_NUM_PROFILES 4 |
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//---------------------------------------------------------------------------------------------------------------------------------- |
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struct sd_decode_data |
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{ |
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int cid; |
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int addcidUsed; |
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int largecidUsed; |
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struct sd_context * active; |
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}; |
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//---------------------------------------------------------------------------------------------------------------------------------- |
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struct sd_statistics |
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{ |
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unsigned int packets_received; |
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unsigned int packets_failed_crc; |
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unsigned int packets_failed_no_context; |
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unsigned int packets_failed_package; |
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unsigned int packets_feedback; |
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}; |
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//---------------------------------------------------------------------------------------------------------------------------------- |
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struct sd_rohc |
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{ |
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struct sd_context ** context; |
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int context_array_size; |
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|
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struct s_medium * medium; |
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struct sc_rohc * compressor; |
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|
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unsigned int maxval; // updated from GUI |
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unsigned int errval; |
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unsigned int okval; |
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int curval; |
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|
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struct sd_statistics statistics; |
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}; |
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//---------------------------------------------------------------------------------------------------------------------------------- |
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// Medium specific data |
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//---------------------------------------------------------------------------------------------------------------------------------- |
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struct s_medium |
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{ |
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int cid_type; // large or small cid |
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int max_cid; // maximum cid value |
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}; |
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//---------------------------------------------------------------------------------------------------------------------------------- |
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// The context structure |
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//---------------------------------------------------------------------------------------------------------------------------------- |
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struct sd_context |
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{ |
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//int last_failed; |
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|
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struct s_profile * profile; // used profile |
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|
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void * data; // profile data |
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|
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int mode; // U_MODE, O_MODE, R_MODE |
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int state; // NO_CONTEXT, STATIC_CONTEXT, FULL_CONTEXT |
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|
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|
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int latest_used, first_used; // timestamps.. |
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|
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// statistics variables.. |
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int total_uncompressed_size, total_compressed_size; |
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int header_uncompressed_size, header_compressed_size; |
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int num_recv_packets, num_recv_ir, num_recv_ir_dyn, num_sent_feedbacks; |
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int num_decomp_failures, num_decomp_repairs; |
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struct sc_wlsb *total_16_uncompressed, *total_16_compressed; |
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struct sc_wlsb *header_16_uncompressed, *header_16_compressed; |
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|
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int curval; |
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}; |
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//---------------------------------------------------------------------------------------------------------------------------------- |
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// The profile structure |
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//---------------------------------------------------------------------------------------------------------------------------------- |
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struct s_profile |
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{ |
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int id; // 0x0000 fr uncompress, etc |
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char *version; |
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char *description; |
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|
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int (*decode) ( |
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struct sd_rohc * state, |
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struct sd_context * context, |
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unsigned char * src, |
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int size, |
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int second_byte, |
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unsigned char * dest |
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); |
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|
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int (*decode_ir) ( |
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struct sd_rohc * state, |
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struct sd_context * context, |
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unsigned char * src, |
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int size, |
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int last_bit, |
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unsigned char * dest |
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); |
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|
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void *(*allocate_decode_data)(void); |
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void (*free_decode_data)(void *); |
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|
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int (*detect_ir_size)(unsigned char * first_byte, int second_byte_add); |
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int (*detect_ir_dyn_size)(unsigned char * first_byte, struct sd_context * context); |
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int (*get_sn)(struct sd_context * context); |
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}; |
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//---------------------------------------------------------------------------------------------------------------------------------- |
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void context_array_increase(struct sd_rohc * state, int highestcid); |
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void context_array_decrease(struct sd_rohc * state); |
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|
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struct sd_context * find_context(struct sd_rohc * state, int cid); |
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struct sd_context * context_create(struct sd_rohc * state, int with_cid, struct s_profile * profile); |
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void context_free(struct sd_context * context); |
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|
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struct sd_rohc * rohc_alloc_decompressor(struct sc_rohc *compressor); |
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void rohc_free_decompressor(struct sd_rohc * state); |
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int rohc_decompress(struct sd_rohc * state, unsigned char * ibuf, int isize, unsigned char * obuf, int osize ); |
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|
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int rohc_d_statistics(struct sd_rohc *, char *buffer); // store statistics about decompressor |
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int rohc_d_context(struct sd_rohc *, int index, char *buffer); // store statistics about a context |
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|
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int rohc_decompress_both(struct sd_rohc * state, unsigned char * ibuf, int isize, unsigned char * obuf, int osize, int large); |
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|
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int d_decode_header(struct sd_rohc * state, unsigned char * ibuf, int isize, unsigned char * obuf, int osize, struct sd_decode_data * ddata); |
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int d_decode_feedback(struct sd_rohc * state, unsigned char * ibuf); |
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int d_decode_feedback_first(struct sd_rohc * state, unsigned char ** walk, const int isize); |
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|
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void d_operation_mode_feedback(struct sd_rohc * state, int rohc_status, int cid, int addcidUsed, int largecidUsed, int mode, struct sd_context * ctxt); |
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void d_change_mode_feedback(struct sd_rohc * state, struct sd_context * ctxt); |
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|
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int rohc_ir_packet_crc_ok(unsigned char * walk, const int largecid, const int addcidUsed, const struct s_profile * profile); |
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int rohc_ir_dyn_packet_crc_ok(unsigned char * walk, const int largecid, const int addcidUsed, const struct s_profile * profile, struct sd_context * context); |
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|
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void clear_statistics(struct sd_rohc * state); |
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void usergui_interactions(struct sd_rohc * state, int feedback_maxval); |
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//---------------------------------------------------------------------------------------------------------------------------------- |
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#endif |
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//---------------------------------------------------------------------------------------------------------------------------------- |