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/*

 * Project: S.Ha.R.K.

 *

 * Coordinators:

 *   Giorgio Buttazzo    <giorgio@sssup.it>

 *   Paolo Gai           <pj@gandalf.sssup.it>

 *

 * Authors     :

 *   Giacomo Guidi       <giacomo@gandalf.sssup.it>

 *

 * ReTiS Lab (Scuola Superiore S.Anna - Pisa - Italy)

 *

 * http://www.sssup.it

 * http://retis.sssup.it

 * http://shark.sssup.it

 */

/*

 * Copyright (C) 2000 Paolo Gai

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 2 of the License, or

 * (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

 */

#include "kernel/kern.h"

#include "fsf_contract.h"

#include "fsf_server.h"

#include "stdlib.h"

#include "unistd.h"

#include "string.h"

#include "pthread.h"

#include "drivers/keyb.h"

#include "drivers/glib.h"

/*Init Server Parameters */

#define SERVER_I_PERIOD 50000

#define SERVER_I_BUDGET 10000

#define SERVER_P_PERIOD 50000

#define SERVER_P_BUDGET 10000

#define SERVER_B_PERIOD 50000

#define SERVER_B_BUDGET 10000

struct timespec server_I_period = {0,SERVER_I_PERIOD*1000};

struct timespec server_I_budget = {0,SERVER_I_BUDGET*1000};

struct timespec server_P_period = {0,SERVER_P_PERIOD*1000};

struct timespec server_P_budget = {0,SERVER_P_BUDGET*1000};

struct timespec server_B_period = {0,SERVER_B_PERIOD*1000};

struct timespec server_B_budget = {0,SERVER_B_BUDGET*1000};

fsf_server_id_t server_I, server_P, server_B;

fsf_contract_parameters_t contract_I, contract_P, contract_B;

/* Decoder PID */

pthread_t pI,pP,pB;

#define FRAME_I 0

#define FRAME_P 1

#define FRAME_B 2

struct decoder_arg {

   int frame_number;

   int frame_type;

   int fx,fy,fd;

   void *input_buffer_newdata;

   void *input_buffer_pastframe;

   void *output_buffer_newframe;

   int server_id;

};

typedef struct decoder_arg *decoder_arg_ptr;

#define MAX_DECODER_NUMBER 10

/* Table of pointer to decoder_ard struct */

decoder_arg_ptr decoder_arg_table[MAX_DECODER_NUMBER];

/* Decoder TASK */

TASK decoder(void *arg)

{

  decoder_arg_ptr darg = (decoder_arg_ptr)(arg);

  int i,Q,R;

  struct timespec current;

  while(1) {

    cprintf("Decoder Start %d Frame %d\n",exec_shadow,darg->frame_number);

    for (i=0;i<100;i++) {

      if (MPEGSTAR_is_frame_skipped(darg->server_id)) {

        kern_printf("Skipping this frame\n");

        break;

      }  

      kern_gettime(&current);

    }

    Q = MPEGSTAR_get_remain_capacity(darg->server_id);

    R = MPEGSTAR_get_last_reclaiming(darg->server_id);

    printf_xy(55,10+exec_shadow,WHITE,"[S%02d:Q%06d:R%06d]",darg->server_id,Q,R);

    cprintf("Decoder End %d\n",exec_shadow);

    task_endcycle();

  }

  return NULL;

}

int init_mpeg_server() {

  int err;

  HARD_TASK_MODEL ht;

  fsf_initialize_contract(&contract_I);

  fsf_set_contract_basic_parameters(&contract_I,&server_I_budget,&server_I_period,NULL,NULL,FSF_DEFAULT_WORKLOAD);

  fsf_set_local_scheduler_parameter(&contract_I, FSF_SCHEDULER_MPEG);

  fsf_initialize_contract(&contract_P);

  fsf_set_contract_basic_parameters(&contract_P,&server_P_budget,&server_P_period,NULL,NULL,FSF_DEFAULT_WORKLOAD);

  fsf_set_local_scheduler_parameter(&contract_P, FSF_SCHEDULER_MPEG);

  fsf_initialize_contract(&contract_B);

  fsf_set_contract_basic_parameters(&contract_B,&server_B_budget,&server_B_period,NULL,NULL,FSF_DEFAULT_WORKLOAD);

  fsf_set_local_scheduler_parameter(&contract_B, FSF_SCHEDULER_MPEG);

  err = fsf_negotiate_contract(&contract_I,&server_I);

  if (err) cprintf("(FSF ERROR %d)",err);

  err = fsf_negotiate_contract(&contract_P,&server_P);

  if (err) cprintf("(FSF ERROR %d)",err);

  err = fsf_negotiate_contract(&contract_B,&server_B);

  if (err) cprintf("(FSF ERROR %d)",err);

  hard_task_default_model(ht);

  decoder_arg_table[server_I] = (decoder_arg_ptr)malloc(sizeof(struct decoder_arg));

  decoder_arg_table[server_I]->server_id = server_I;

  fsf_create_thread(server_I, &pI, NULL, decoder, decoder_arg_table[server_I], &ht);

  cprintf("Decoder I PID %d\n",pI);

  decoder_arg_table[server_P] = (decoder_arg_ptr)malloc(sizeof(struct decoder_arg));

  decoder_arg_table[server_P]->server_id = server_P;

  fsf_create_thread(server_P, &pP, NULL, decoder, decoder_arg_table[server_P], &ht);

  cprintf("Decoder P PID %d\n",pP);

  decoder_arg_table[server_B] = (decoder_arg_ptr)malloc(sizeof(struct decoder_arg));

  decoder_arg_table[server_B]->server_id = server_B;

  fsf_create_thread(server_B, &pB, NULL, decoder, decoder_arg_table[server_B], &ht);

  cprintf("Decoder B PID %d\n",pB);

  return 0;

}

/* Decoder Manager TASK */

TASK decoder_manager(void *arg) {

  TIME T,Q;

  T = 50000;

  Q = 10000;

  MPEGSTAR_rescale(server_I,Q,T);

  decoder_arg_table[server_I]->frame_number = 0;

  decoder_arg_table[server_I]->frame_type = FRAME_I;

  task_activate(pI);

  T = 150000;

  Q = 10000;

  MPEGSTAR_rescale(server_P,Q,T);

  decoder_arg_table[server_P]->frame_number = 2;

  decoder_arg_table[server_P]->frame_type = FRAME_P;

  task_activate(pP);

  T = 100000;

  Q = 10000;

  MPEGSTAR_rescale(server_B,Q,T);

  decoder_arg_table[server_B]->frame_number = 1;

  decoder_arg_table[server_B]->frame_type = FRAME_B;

  task_activate(pB);

  return 0;

}

int main () {

  HARD_TASK_MODEL ht_manager;

  PID dm;

  init_mpeg_server();

  hard_task_default_model(ht_manager);

  hard_task_def_mit(ht_manager,10000);

  hard_task_def_wcet(ht_manager,5000);

  hard_task_def_arg(ht_manager,NULL);

  dm = task_create("Manager", decoder_manager, &ht_manager, NULL);

  if (dm == NIL) {

    cprintf("Error creating decoder manager\n");

    sys_end();

  }

  cprintf("Control-C to exit\n");

  task_activate(dm);

  while(1);

  return 0;

}