Amcodec: codec/codec_h_ctrl.c File Reference

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codec/codec_h_ctrl.c File Reference

functions of codec device handler operation More...

#include <stdio.h> #include <sys/types.h>
#include <sys/stat.h>
#include <errno.h>
#include <sys/ioctl.h>
#include <fcntl.h>
#include <sys/mman.h>
#include <codec_error.h>
#include <codec.h>
#include "codec_h_ctrl.h"
Include dependency graph for codec_h_ctrl.c:

Go to the source code of this file.

Functions

CODEC_HANDLE codec_h_open (const char *port_addr, int flags)
 codec_h_open Open codec devices by file name
CODEC_HANDLE codec_h_open_rd (const char *port_addr)
 codec_h_open_rd Open codec devices by file name in read_only mode
int codec_h_close (CODEC_HANDLE h)
 codec_h_close Close codec devices
int codec_h_control (CODEC_HANDLE h, int cmd, unsigned long paramter)
 codec_h_control IOCTL commands for codec devices
int codec_h_read (CODEC_HANDLE handle, void *buffer, int size)
 codec_h_read Read data from codec devices
int codec_h_write (CODEC_HANDLE handle, void *buffer, int size)
 codec_h_write Write data to codec devices

Detailed Description

functions of codec device handler operation

Author:
Zhou Zhi <[email protected]>
Version:
2.0.0
Date:
2011-02-24

Definition in file codec_h_ctrl.c.

Function Documentation

int codec_h_close ( CODEC_HANDLE  h  ) 

codec_h_close Close codec devices

Parameters:
[in] h Handler of codec device
Returns:
0 for success

Definition at line 74 of file codec_h_ctrl.c.

Referenced by codec_close(), codec_close_cntl(), codec_close_sub(), and codec_close_sub_fd().

int codec_h_control ( CODEC_HANDLE  h,
int  cmd,
unsigned long  paramter 
)

codec_h_control IOCTL commands for codec devices

Parameters:
[in] h Codec device handler
[in] cmd IOCTL commands
[in] paramter IOCTL commands parameter
Returns:
0 for success, non-0 for fail

Definition at line 93 of file codec_h_ctrl.c.

Referenced by codec_checkin_pts(), codec_get_abuf_state(), codec_get_adec_state(), codec_get_cntl_state(), codec_get_sub_size(), codec_get_sub_size_fd(), codec_get_vbuf_state(), codec_get_vdec_state(), codec_init(), codec_reset_audio(), codec_reset_subtile(), codec_set_audio_pid(), codec_set_cntl_avthresh(), codec_set_cntl_mode(), codec_set_cntl_syncthresh(), codec_set_dec_reset(), and codec_set_sub_id().

CODEC_HANDLE codec_h_open ( const char *  port_addr,
int  flags 
)

codec_h_open Open codec devices by file name

Parameters:
[in] port_addr File name of codec device
[in] flags Open flags
Returns:
The handler of codec device

Definition at line 34 of file codec_h_ctrl.c.

Referenced by codec_init_cntl(), and codec_init_sub().

CODEC_HANDLE codec_h_open_rd ( const char *  port_addr  ) 

codec_h_open_rd Open codec devices by file name in read_only mode

Parameters:
[in] port_addr File name of codec device
Returns:
THe handler of codec device

Definition at line 54 of file codec_h_ctrl.c.

Referenced by codec_open_sub_read().

int codec_h_read ( CODEC_HANDLE  handle,
void *  buffer,
int  size 
)

codec_h_read Read data from codec devices

Parameters:
[in] handle Codec device handler
[out] buffer Buffer for the data read from codec device
[in] size Size of the data to be read
Returns:
read length or fail if < 0

Definition at line 119 of file codec_h_ctrl.c.

Referenced by codec_read(), codec_read_sub_data(), and codec_read_sub_data_fd().

int codec_h_write ( CODEC_HANDLE  handle,
void *  buffer,
int  size 
)

codec_h_write Write data to codec devices

Parameters:
[in] handle Codec device handler
[out] buffer Buffer for the data to be written to codec device
[in] size Size of the data to be written
Returns:
write length or fail if < 0

Definition at line 137 of file codec_h_ctrl.c.

Referenced by codec_write(), and codec_write_sub_data().

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