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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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// The Uncompressed profile in decompressor |
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|
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#include "rohc.h" |
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#include "decomp.h" |
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|
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#include "d_uncompressed.h" |
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|
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// Allocate profile-data, nothing to allocate |
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void * uncompressed_allocate_decode_data(void) |
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{ |
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return (void*)1; |
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} |
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|
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// To deallocate profile data, no data to free |
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void uncompressed_free_decode_data(void * p) |
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{ |
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} |
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|
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// Decode an IR-package and initalize context |
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int uncompressed_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 copy_size, |
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int dynamic_present, |
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unsigned char * dest |
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) |
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{ |
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unsigned char * s = src; |
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unsigned char * d = dest; |
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|
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context->state = ROHC_FULL_CONTEXT; |
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|
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if (copy_size == 0) return ROHC_OK_NO_DATA; |
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|
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memcpy(d, s, copy_size); |
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return copy_size; |
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} |
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|
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// Calculate the size of data in an IR-package. |
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// return : size or zero. |
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int uncompressed_detect_ir_size(unsigned char * first_byte, int second_byte_add) |
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{ |
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int ret = 10; |
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int d = GET_BIT_0(first_byte); |
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if (d) ret += 5 + 2; |
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if (first_byte[second_byte_add + 2] != 0x40) return 0; |
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|
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return ret; |
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} |
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|
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// Calculate the size of data in an IR-package. |
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// return : size or zero. |
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int uncompressed_detect_ir_dyn_size(unsigned char * first_byte, struct sd_context *c) |
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{ |
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return 7; |
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} |
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|
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// Decode all package except IR-package. |
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int uncompressed_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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unsigned char * s = src; |
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unsigned char * d = dest; |
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|
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if (context->state == ROHC_NO_CONTEXT) return ROHC_ERROR; |
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|
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*d = GET_BIT_0_7(src); |
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d += 1; |
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s += second_byte; |
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|
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memcpy(d, s, size - second_byte); |
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return (size - second_byte + 1); |
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} |
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|
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static int uncompressed_get_sn(struct sd_context * dummy) |
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{ |
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return 0; |
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} |
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|
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static struct s_profile d_uncomp_profile = {0,"1.0", "Uncompressed / Decompressor", |
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uncompressed_decode, |
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uncompressed_decode_ir, |
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uncompressed_allocate_decode_data, |
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uncompressed_free_decode_data, |
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uncompressed_detect_ir_size, |
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uncompressed_detect_ir_dyn_size, |
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uncompressed_get_sn |
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}; |
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|
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struct s_profile * uncompressed_profile_create() |
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{ |
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return &d_uncomp_profile; |
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} |
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|
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|
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