hxcodec.c

References Functions:	HelixClose()	nut/dev/hxcodec.c
	HelixIOCtl()	nut/dev/hxcodec.c
	HelixInit()	nut/dev/hxcodec.c
	HelixOpen()	nut/dev/hxcodec.c
	HelixWrite()	nut/dev/hxcodec.c
	HelixWrite_P()	nut/dev/hxcodec.c
References Variables:	dcb	nut/dev/hxcodec.c

Included Files

#include <nut/include/sys/atom.h>

#include <nut/include/sys/event.h>

#include <nut/include/sys/timer.h>

#include <nut/include/sys/heap.h>

#include <nut/include/cfg/arch/gpio.h>

#include <nut/include/cfg/audio.h>

#include <nut/include/dev/irqreg.h>

#include <nut/include/contrib/hxmp3/mp3dec.h>

#include <nut/include/contrib/hxmp3/hermite.h>

#include <nut/include/dev/hxcodec.h>

#include <nut/include/dev/tlv320dac.h>

#include <nut/include/sys/bankmem.h>

#include <stdlib.h>

#include </usr/lib/gcc/avr/3.4.3/include/stddef.h>

#include </usr/avr/include/string.h>

#include <nut/include/memdebug.h>

Preprocessor definitions

#define NUT_THREAD_HXCODEC0STACK 768

#define HXCODEC0_MAX_OUTPUT_BUFSIZ 16384

#define DAC_OUTPUT_RATE 8000

#define MP3_BUFSIZ

#define HXREQ_PLAY 0x00000001

#define HXREQ_CANCEL 0x00000002

#define HXREQ_VOLUPD 0x00000004

#define HXREQ_BEEP 0x00000008

Typedef HXDCB

typedef struct _HXDCB HXDCB

`struct _HXDCB`
`{`
`int dcb_pbstat;`
`uint32_t dcb_scmd;`
`int dcb_rvol;`
`int dcb_lvol;`
`uint32_t dcb_pbwlo;`
`uint32_t dcb_pbwhi;`
`uint32_t dcb_wtmo;`
`HANDLE dcb_bufque;`
`HANDLE dcb_feedme;`
`}`

Typedef MP3PLAYERINFO

typedef struct _MP3PLAYERINFO MP3PLAYERINFO

`struct _MP3PLAYERINFO`
`{`
`HMP3Decoder mpi_mp3dec;`
`MP3FrameInfo mpi_frameinfo;`
`}`

Global Variable devHelixCodec

NUTDEVICE devHelixCodec

Visible in:

nut/dev/hxcodec.c

Local Variables

dcb
static HXDCB dcb

Used in:		nut/dev/hxcodec.c
	HelixInit()

mpi
static MP3PLAYERINFO mpi

Used in:	DecodeFrame()
	HelixClose()
	HelixOpen()

pi_pcmbuf
static short pi_pcmbuf[2*2*576]

Used in:

DecodeFrame()

first_frame
static int first_frame

Used in:	DecodeFrame()
	HelixOpen()

samprate
static int samprate

Used in:

DecodeFrame()

Global Function FeederThread()

void FeederThread ( void* arg )

Prototyped in:	nut/dev/hxcodec.c
Calls:	DecodeFrame()	nut/dev/hxcodec.c
	HelixPlayerSetVolume()	nut/dev/hxcodec.c
	free()	nut/crt/malloc.c
	malloc()	nut/crt/malloc.c
	memcpy()	nut/c/string/memcpy.c
	NutEventPost(), NutEventWait(), NutSegBufReadLast(), NutSegBufReadRequest(), NutSegBufReset(), NutSegBufUsed(), NutSleep(), NutThreadSetPriority()
Used in:	HelixInit()	nut/dev/hxcodec.c

Local Function DecodeFrame()

static int DecodeFrame ( uint8_t* buf, int len )

Calls:	MP3Decode(), MP3FindSyncWord(), MP3GetLastFrameInfo(), Tlv320DacWrite()
Called by:	FeederThread()	nut/dev/hxcodec.c
References Variables:	first_frame	nut/dev/hxcodec.c
	mpi	nut/dev/hxcodec.c
	pi_pcmbuf	nut/dev/hxcodec.c
	samprate	nut/dev/hxcodec.c

Local Function HelixClose()

static int HelixClose ( NUTFILE* nfp )

Calls:	HelixPlayerFlush()	nut/dev/hxcodec.c
	free()	nut/crt/malloc.c
	MP3FreeDecoder()
Used in:		nut/dev/hxcodec.c
References Variables:	mpi	nut/dev/hxcodec.c

Local Function HelixIOCtl()

static int HelixIOCtl ( NUTDEVICE* dev, int req, void* conf )

Calls:	HelixPlayerBufferInit()	nut/dev/hxcodec.c
	NutEventPost(), NutSegBufAvailable(), NutSegBufUsed()
Called by:	HelixPlayerFlush()	nut/dev/hxcodec.c
Used in:		nut/dev/hxcodec.c

Local Function HelixInit()

static int HelixInit ( NUTDEVICE* dev )

Calls:	HelixPlayerBufferInit()	nut/dev/hxcodec.c
	NutThreadCreate()	nut/arch/avr/os/context_icc.c
	NutHeapRootAvailable(), Tlv320DacInit(), Tlv320DacSetVolume()
Used in:		nut/dev/hxcodec.c
References Functions:	FeederThread()	nut/dev/hxcodec.c
References Variables:	dcb	nut/dev/hxcodec.c

Local Function HelixOpen()

static NUTFILE* HelixOpen ( NUTDEVICE* dev, const char* name, int mode, int acc )

Calls:	malloc()	nut/crt/malloc.c
	MP3InitDecoder(), NutSegBufReset(), NutSleep()
Used in:		nut/dev/hxcodec.c
References Variables:	first_frame	nut/dev/hxcodec.c
	mpi	nut/dev/hxcodec.c

Local Function HelixPlayerBufferInit()

static int HelixPlayerBufferInit ( NUTDEVICE* dev, uint32_t size )

Calls:	NutSegBufAvailable(), NutSegBufInit()
Called by:	HelixIOCtl()	nut/dev/hxcodec.c
	HelixInit()	nut/dev/hxcodec.c

Local Function HelixPlayerFlush()

static int HelixPlayerFlush ( NUTDEVICE* dev, uint32_t tmo )

Calls:	HelixIOCtl()	nut/dev/hxcodec.c
	NutEventWait(), NutSegBufUsed()
Called by:	HelixClose()	nut/dev/hxcodec.c
	HelixWrite()	nut/dev/hxcodec.c

Local Function HelixPlayerSetVolume()

static int HelixPlayerSetVolume ( NUTDEVICE* dev, int left, int right )

Calls:	Tlv320DacSetVolume()
Called by:	FeederThread()	nut/dev/hxcodec.c

Local Function HelixWrite()

static int HelixWrite ( NUTFILE* nfp, const void* data, int len )

Calls:	HelixPlayerFlush()	nut/dev/hxcodec.c
	memcpy()	nut/c/string/memcpy.c
	NutEventPost(), NutEventWait(), NutSegBufWriteLast(), NutSegBufWriteRequest()
Used in:		nut/dev/hxcodec.c

Local Function HelixWrite_P()

static int HelixWrite_P ( NUTFILE* nfp, const prog_char* buffer, int len )

Used in:

nut/dev/hxcodec.c