Uc/os Examples of applications

//-------------------------------------------------

PCM Player with Real time AMR Codec decode
//
Useing Ucos-ii to build this applications
//
Author:xxc
//
Target Chip:sieko Epson s1c333209
//
version:1.0.0
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////////////////////////////////////////////////
//
//
Shannxi Microvantech Corp.
//
(c) 2004 Copyright by XXC
//
All Rights Reserved
//
//
///////////////////////////////////////////////


#include "includes.h"//For OS
#include "amrglobal.h"//For AMR Codec
#include "dec_com.h"//For AMR decode


#define TASK_STK_SIZE 512

#define SERIAL_FRAMESIZE (1+MAX_SERIAL_SIZE+5)

void TimerTask (void* data); Initlize Task,only Run Once

void Playtask (void* pdata); Preplay Task,use for filling play buffer
With first time and start playing.
void WorkTask1 (void* pdata); Background task. Use for filling play date
When the DAC finished played the dates.

void Amr_speech_decode_proc (short *en475_buf, short *synth);
extern const Char en475_buf[];

OS_STK Timerstk[task_stk_size];
OS_STK Playstk[task_stk_size];
OS_STK Workstk1[task_stk_size];

void Main ()
{
Osinit ();
Ostaskcreate (TimerTask, (void*) 0,&timerstk[task_stk_size-1],5);
Ostaskcreate (Playtask, (void*) 0,&playstk[task_stk_size-1],7);
Ostaskcreate (WorkTask1, (void*) 0,&workstk1[task_stk_size-1],9);
Osstart ();

}

void TimerTask (void *pdata)
{

pdata = pdata;

Os_enter_critical ();

* ((int8u*) 0x48205) = 0;
* ((int32u*) 0x48200) = idma_start_address;
* ((int8u*) 0x48205) = 1;
Dacd_initialize ();
Dacd_setsamplingmode (8000, 1, 16);
Dacd_setheadphonevolume (60, 60);

Os_exit_critical ();

Stop_16timer (T16P_PRUN1_ADDR);
Init_16timer1 ();
Run_16timer (T16P_PRUN1_ADDR);

Ostasksuspend (9);
Ostasksuspend (5); Switch to play task
}

void Playtask (void* pdata)
{
INT32U i;
Int8u J;
int16u index;
int8u* PBuf;
int16u* serial = (int16u*) en475_buf;
pdata = pdata;
for (;;)
{
Speech_decode_frame_init ();
i=0;
j = 1;
Run_16timer (T16P_PRUN1_ADDR);
while (I < 8)
{
PBuf = Dacd_getnextbuffer ();
if (PBuf! = 0)
{
Stop_16timer (T16P_PRUN1_ADDR);
Amr_speech_decode_proc (Serial+i*serial_framesize, (short *) pBuf);
i++;
Amr_speech_decode_proc (Serial+i*serial_framesize, (short *) pbuf+160);
i++;
Amr_speech_decode_proc (Serial+i*serial_framesize, (short *) pbuf+320);
i++;
Amr_speech_decode_proc (Serial+i*serial_framesize, (short *) pbuf+480);
i++;
PBuf = Dacd_acknowledge (640);
Run_16timer (T16P_PRUN1_ADDR);
ostimedly (1);
}
}
Dacd_startplay ();
Ostaskresume (9);
Ostasksuspend (7);
}
}

void WorkTask1 (void* pdata)
{
INT32U i;
int16u index;
int8u* PBuf;
int16u* serial = (int16u*) en475_buf;

pdata = pdata;
for (;;)
{
i = 8;
while (I<framesum)
{
PBuf = Dacd_getnextbuffer ();
if (PBuf! = 0)
{
Stop_16timer (T16P_PRUN1_ADDR);
Amr_speech_decode_proc (Serial+i*serial_framesize, (short *) pBuf);
i++;
Amr_speech_decode_proc (Serial+i*serial_framesize, (short *) pbuf+160);
i++;
Amr_speech_decode_proc (Serial+i*serial_framesize, (short *) pbuf+320);
i++;
Amr_speech_decode_proc (Serial+i*serial_framesize, (short *) pbuf+480);
i++;
PBuf = Dacd_acknowledge (640);
Run_16timer (T16P_PRUN1_ADDR);
}
ostimedly (1);
}
Ostaskresume (7);
}
}

void Amr_speech_decode_proc (short *en475_buf, short *synth)
{
int16u param[max_prm_size+1]={0};
Word16 Az_dec[az_size];

BITS2PRM (en475_buf+1, param);
Decoder_amr (&g_decoder_amrstate, &g_ec_gain_p_st, &g_ec_gain_c_st, param, synth, az_dec);
Post_filter (& (G_post_state.synth_buf[m]), G_post_state.res2, G_post_state.mem_syn_pst, synth, Az_dec);
Post_process (synth, &g_posthp_state);
}