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astyle --recursive --indent=spaces=2 --style=kr --indent-col1-comments --break-blocks --convert-tabs --max-code-length=200

Browse Source 
This is done for better merging branch/LG_PRE_RELEASE_0.3 into trunk (same process is applied on this branch)

git-svn-id: http://svn.eurecom.fr/openair4G/trunk@7073 818b1a75-f10b-46b9-bf7c-635c3b92a50f
This commit is contained in:
Lionel Gauthier
2015-04-09 09:29:12 +00:00
parent f0a8a0b3b5
commit 059a0a3fdc
2044 changed files with 1182666 additions and 1145123 deletions
Download Patch File Download Diff File Expand all files Collapse all files
openair1/PHY/CODING/lte_segmentation.c
+61 -52
View File
@@ -1,5 +1,5 @@
/*******************************************************************************
OpenAirInterface
OpenAirInterface
Copyright(c) 1999 - 2014 Eurecom
OpenAirInterface is free software: you can redistribute it and/or modify
@@ -14,22 +14,22 @@
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with OpenAirInterface.The full GNU General Public License is
included in this distribution in the file called "COPYING". If not,
along with OpenAirInterface.The full GNU General Public License is
included in this distribution in the file called "COPYING". If not,
see <http://www.gnu.org/licenses/>.
Contact Information
OpenAirInterface Admin: openair_admin@eurecom.fr
OpenAirInterface Tech : openair_tech@eurecom.fr
OpenAirInterface Dev : openair4g-devel@eurecom.fr
Address : Eurecom, Campus SophiaTech, 450 Route des Chappes, CS 50193 - 06904 Biot Sophia Antipolis cedex, FRANCE
*******************************************************************************/
/* file: lte_segmentation.c
purpose: Procedures for transport block segmentation for LTE (turbo-coded transport channels)
purpose: Procedures for transport block segmentation for LTE (turbo-coded transport channels)
author: raymond.knopp@eurecom.fr
date: 21.10.2009
date: 21.10.2009
*/
#include "PHY/defs.h"
#include "SCHED/extern.h"
@@ -37,14 +37,15 @@
//#define DEBUG_SEGMENTATION
int lte_segmentation(unsigned char *input_buffer,
unsigned char **output_buffers,
unsigned int B,
unsigned int *C,
unsigned int *Cplus,
unsigned int *Cminus,
unsigned int *Kplus,
unsigned int *Kminus,
unsigned int *F) {
unsigned char **output_buffers,
unsigned int B,
unsigned int *C,
unsigned int *Cplus,
unsigned int *Cminus,
unsigned int *Kplus,
unsigned int *Kminus,
unsigned int *F)
{
unsigned int L,Bprime,Bprime_by_C,r,Kr,k,s,crc;
@@ -52,17 +53,19 @@ int lte_segmentation(unsigned char *input_buffer,
L=0;
*C=1;
Bprime=B;
}
else {
} else {
L=24;
*C = B/(6144-L);
if ((6144-L)*(*C) < B)
*C=*C+1;
Bprime = B+((*C)*L);
Bprime = B+((*C)*L);
#ifdef DEBUG_SEGMENTATION
printf("Bprime %d\n",Bprime);
#endif
}
if ((*C)>MAX_NUM_DLSCH_SEGMENTS) {
msg("lte_segmentation.c: too many segments %d\n",*C);
return(-1);
@@ -73,52 +76,52 @@ int lte_segmentation(unsigned char *input_buffer,
#ifdef DEBUG_SEGMENTATION
printf("Bprime_by_C %d\n",Bprime_by_C);
#endif
// Bprime = Bprime_by_C>>3;
// Bprime = Bprime_by_C>>3;
if (Bprime_by_C <= 40) {
*Kplus = 40;
*Kminus = 0;
}
else if (Bprime_by_C<=512) { // increase by 1 byte til here
} else if (Bprime_by_C<=512) { // increase by 1 byte til here
*Kplus = (Bprime_by_C>>3)<<3;
*Kminus = Bprime_by_C-8;
}
else if (Bprime_by_C <=1024) {// increase by 2 bytes til here
} else if (Bprime_by_C <=1024) { // increase by 2 bytes til here
*Kplus = (Bprime_by_C>>4)<<4;
if (*Kplus < Bprime_by_C)
*Kplus = *Kplus + 16;
*Kminus = (*Kplus - 16);
}
else if (Bprime_by_C <= 2048) { // increase by 4 bytes til here
} else if (Bprime_by_C <= 2048) { // increase by 4 bytes til here
*Kplus = (Bprime_by_C>>5)<<5;
if (*Kplus < Bprime_by_C)
*Kplus = *Kplus + 32;
*Kminus = (*Kplus - 32);
}
else if (Bprime_by_C <=6144 ) { // increase by 8 bytes til here
*Kplus = (Bprime_by_C>>6)<<6;
*Kminus = (*Kplus - 32);
} else if (Bprime_by_C <=6144 ) { // increase by 8 bytes til here
*Kplus = (Bprime_by_C>>6)<<6;
#ifdef DEBUG_SEGMENTATION
printf("Bprime_by_C_by_C %d , Kplus %d\n",Bprime_by_C,*Kplus);
#endif
#endif
if (*Kplus < Bprime_by_C)
*Kplus = *Kplus + 64;
#ifdef DEBUG_SEGMENTATION
printf("Bprime_by_C_by_C %d , Kplus2 %d\n",Bprime_by_C,*Kplus);
#endif
*Kminus = (*Kplus - 64);
}
else {
} else {
msg("lte_segmentation.c: Illegal codeword size !!!\n");
return(-1);
}
}
if (*C == 1) {
*Cplus = *C;
*Kminus = 0;
*Cminus = 0;
}
else {
} else {
// printf("More than one segment (%d), exiting \n",*C);
// exit(-1);
@@ -132,52 +135,58 @@ int lte_segmentation(unsigned char *input_buffer,
#ifdef DEBUG_SEGMENTATION
printf("C %d, Cplus %d, Cminus %d, Kplus %d, Kminus %d, Bprime_bytes %d, Bprime %d, F %d\n",*C,*Cplus,*Cminus,*Kplus,*Kminus,Bprime>>3,Bprime,*F);
#endif
if ((input_buffer) && (output_buffers)) {
for (k=0;k<*F>>3;k++) {
for (k=0; k<*F>>3; k++) {
output_buffers[0][k] = 0;
}
}
s=0;
for (r=0;r<*C;r++) {
for (r=0; r<*C; r++) {
if (r<*Cminus)
Kr = *Kminus;
Kr = *Kminus;
else
Kr = *Kplus;
Kr = *Kplus;
while (k<((Kr - L)>>3)) {
output_buffers[r][k] = input_buffer[s];
// printf("encoding segment %d : byte %d => %d\n",r,k,input_buffer[s]);
k++;
s++;
output_buffers[r][k] = input_buffer[s];
// printf("encoding segment %d : byte %d => %d\n",r,k,input_buffer[s]);
k++;
s++;
}
if (*C > 1) { // add CRC
crc = crc24b(output_buffers[r],Kr-24)>>8;
output_buffers[r][(Kr-24)>>3] = ((uint8_t*)&crc)[2];
output_buffers[r][1+((Kr-24)>>3)] = ((uint8_t*)&crc)[1];
output_buffers[r][2+((Kr-24)>>3)] = ((uint8_t*)&crc)[0];
crc = crc24b(output_buffers[r],Kr-24)>>8;
output_buffers[r][(Kr-24)>>3] = ((uint8_t*)&crc)[2];
output_buffers[r][1+((Kr-24)>>3)] = ((uint8_t*)&crc)[1];
output_buffers[r][2+((Kr-24)>>3)] = ((uint8_t*)&crc)[0];
#ifdef DEBUG_SEGMENTATION
printf("Segment %d : CRC %x\n",r,crc);
printf("Segment %d : CRC %x\n",r,crc);
#endif
}
k=0;
}
}
return(0);
}
#ifdef MAIN
main() {
main()
{
unsigned int Kplus,Kminus,C,Cplus,Cminus,F,Bbytes;
for (Bbytes=5;Bbytes<2*768;Bbytes++) {
for (Bbytes=5; Bbytes<2*768; Bbytes++) {
lte_segmentation(0,0,Bbytes<<3,&C,&Cplus,&Cminus,&Kplus,&Kminus,&F);
printf("Bbytes %d : C %d, Cplus %d, Cminus %d, Kplus %d, Kminus %d, F %d\n",
Bbytes, C, Cplus, Cminus, Kplus, Kminus, F);
Bbytes, C, Cplus, Cminus, Kplus, Kminus, F);
}
}
#endif