You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
596 lines
17 KiB
596 lines
17 KiB
/*----------------------------------------------------------------------------
|
|
*
|
|
* File:
|
|
* eas_hostmm.c
|
|
*
|
|
* Contents and purpose:
|
|
* This file contains the host wrapper functions for stdio, stdlib, etc.
|
|
* This is a sample version that reads from a filedescriptor.
|
|
* The file locator (EAS_FILE_LOCATOR) handle passed to
|
|
* HWOpenFile is the same one that is passed to EAS_OpenFile.
|
|
*
|
|
* Modify this file to suit the needs of your particular system.
|
|
*
|
|
* EAS_MAX_FILE_HANDLES sets the maximum number of MIDI streams within
|
|
* a MIDI type 1 file that can be played.
|
|
*
|
|
* EAS_HW_FILE is a structure to support the file I/O functions. It
|
|
* comprises the file descriptor, the file read pointer, and
|
|
* the dup flag, which when set, indicates that the file handle has
|
|
* been duplicated, and offset and length within the file.
|
|
*
|
|
* Copyright 2005 Sonic Network Inc.
|
|
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*
|
|
*----------------------------------------------------------------------------
|
|
* Revision Control:
|
|
* $Revision: 795 $
|
|
* $Date: 2007-08-01 00:14:45 -0700 (Wed, 01 Aug 2007) $
|
|
*----------------------------------------------------------------------------
|
|
*/
|
|
|
|
#ifdef _lint
|
|
#include "lint_stdlib.h"
|
|
#else
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <fcntl.h>
|
|
#include <limits.h>
|
|
#include <sys/mman.h>
|
|
#include <errno.h>
|
|
#include <signal.h>
|
|
#include <pthread.h>
|
|
#include <media/MediaPlayerInterface.h>
|
|
#endif
|
|
|
|
#include "eas_host.h"
|
|
|
|
/* Only for debugging LED, vibrate, and backlight functions */
|
|
#include "eas_report.h"
|
|
|
|
/* this module requires dynamic memory support */
|
|
#ifdef _STATIC_MEMORY
|
|
#error "eas_hostmm.c requires the dynamic memory model!\n"
|
|
#endif
|
|
|
|
#ifndef EAS_MAX_FILE_HANDLES
|
|
// 100 max file handles == 3 * (nb tracks(32) + 1 for the segment) + 1 for jet file
|
|
// 3 == 1(playing segment) + 1(prepared segment)
|
|
// + 1(after end of playing segment, before files closed)
|
|
#define EAS_MAX_FILE_HANDLES 100
|
|
#endif
|
|
|
|
/*
|
|
* this structure and the related function are here
|
|
* to support the ability to create duplicate handles
|
|
* and buffering it in memory. If your system uses
|
|
* in-memory resources, you can eliminate the calls
|
|
* to malloc and free, the dup flag, and simply track
|
|
* the file size and read position.
|
|
*/
|
|
typedef struct eas_hw_file_tag
|
|
{
|
|
int (*readAt)(void *handle, void *buf, int offset, int size);
|
|
int (*size)(void *handle);
|
|
int filePos;
|
|
void *handle;
|
|
} EAS_HW_FILE;
|
|
|
|
typedef struct eas_hw_inst_data_tag
|
|
{
|
|
EAS_HW_FILE files[EAS_MAX_FILE_HANDLES];
|
|
} EAS_HW_INST_DATA;
|
|
|
|
pthread_key_t EAS_sigbuskey;
|
|
|
|
/*----------------------------------------------------------------------------
|
|
* EAS_HWInit
|
|
*
|
|
* Initialize host wrapper interface
|
|
*
|
|
*----------------------------------------------------------------------------
|
|
*/
|
|
EAS_RESULT EAS_HWInit (EAS_HW_DATA_HANDLE *pHWInstData)
|
|
{
|
|
EAS_HW_FILE *file;
|
|
int i;
|
|
|
|
/* need to track file opens for duplicate handles */
|
|
*pHWInstData = malloc(sizeof(EAS_HW_INST_DATA));
|
|
if (!(*pHWInstData))
|
|
return EAS_ERROR_MALLOC_FAILED;
|
|
|
|
EAS_HWMemSet(*pHWInstData, 0, sizeof(EAS_HW_INST_DATA));
|
|
|
|
file = (*pHWInstData)->files;
|
|
for (i = 0; i < EAS_MAX_FILE_HANDLES; i++)
|
|
{
|
|
file->handle = NULL;
|
|
file++;
|
|
}
|
|
|
|
|
|
return EAS_SUCCESS;
|
|
}
|
|
|
|
/*----------------------------------------------------------------------------
|
|
* EAS_HWShutdown
|
|
*
|
|
* Shut down host wrapper interface
|
|
*
|
|
*----------------------------------------------------------------------------
|
|
*/
|
|
EAS_RESULT EAS_HWShutdown (EAS_HW_DATA_HANDLE hwInstData)
|
|
{
|
|
|
|
free(hwInstData);
|
|
return EAS_SUCCESS;
|
|
}
|
|
|
|
/*----------------------------------------------------------------------------
|
|
*
|
|
* EAS_HWMalloc
|
|
*
|
|
* Allocates dynamic memory
|
|
*
|
|
*----------------------------------------------------------------------------
|
|
*/
|
|
/*lint -esym(715, hwInstData) hwInstData available for customer use */
|
|
void *EAS_HWMalloc (EAS_HW_DATA_HANDLE hwInstData, EAS_I32 size)
|
|
{
|
|
/* Since this whole library loves signed sizes, let's not let
|
|
* negative or 0 values through */
|
|
if (size <= 0)
|
|
return NULL;
|
|
return malloc((size_t) size);
|
|
}
|
|
|
|
/*----------------------------------------------------------------------------
|
|
*
|
|
* EAS_HWFree
|
|
*
|
|
* Frees dynamic memory
|
|
*
|
|
*----------------------------------------------------------------------------
|
|
*/
|
|
/*lint -esym(715, hwInstData) hwInstData available for customer use */
|
|
void EAS_HWFree (EAS_HW_DATA_HANDLE hwInstData, void *p)
|
|
{
|
|
free(p);
|
|
}
|
|
|
|
/*----------------------------------------------------------------------------
|
|
*
|
|
* EAS_HWMemCpy
|
|
*
|
|
* Copy memory wrapper
|
|
*
|
|
*----------------------------------------------------------------------------
|
|
*/
|
|
void *EAS_HWMemCpy (void *dest, const void *src, EAS_I32 amount)
|
|
{
|
|
if (amount < 0) {
|
|
EAS_ReportEx(_EAS_SEVERITY_NOFILTER, 0x1a54b6e8, 0x00000004 , amount);
|
|
exit(255);
|
|
}
|
|
return memcpy(dest, src, (size_t) amount);
|
|
}
|
|
|
|
/*----------------------------------------------------------------------------
|
|
*
|
|
* EAS_HWMemSet
|
|
*
|
|
* Set memory wrapper
|
|
*
|
|
*----------------------------------------------------------------------------
|
|
*/
|
|
void *EAS_HWMemSet (void *dest, int val, EAS_I32 amount)
|
|
{
|
|
if (amount < 0) {
|
|
EAS_ReportEx(_EAS_SEVERITY_NOFILTER, 0x1a54b6e8, 0x00000005 , amount);
|
|
exit(255);
|
|
}
|
|
return memset(dest, val, (size_t) amount);
|
|
}
|
|
|
|
/*----------------------------------------------------------------------------
|
|
*
|
|
* EAS_HWMemCmp
|
|
*
|
|
* Compare memory wrapper
|
|
*
|
|
*----------------------------------------------------------------------------
|
|
*/
|
|
EAS_I32 EAS_HWMemCmp (const void *s1, const void *s2, EAS_I32 amount)
|
|
{
|
|
if (amount < 0) {
|
|
EAS_ReportEx(_EAS_SEVERITY_NOFILTER, 0x1a54b6e8, 0x00000006 , amount);
|
|
exit(255);
|
|
}
|
|
return (EAS_I32) memcmp(s1, s2, (size_t) amount);
|
|
}
|
|
|
|
/*----------------------------------------------------------------------------
|
|
*
|
|
* EAS_HWOpenFile
|
|
*
|
|
* Open a file for read or write
|
|
*
|
|
*----------------------------------------------------------------------------
|
|
*/
|
|
EAS_RESULT EAS_HWOpenFile (EAS_HW_DATA_HANDLE hwInstData, EAS_FILE_LOCATOR locator, EAS_FILE_HANDLE *pFile, EAS_FILE_MODE mode)
|
|
{
|
|
EAS_HW_FILE *file;
|
|
int fd;
|
|
int i, temp;
|
|
|
|
/* set return value to NULL */
|
|
*pFile = NULL;
|
|
|
|
/* only support read mode at this time */
|
|
if (mode != EAS_FILE_READ)
|
|
return EAS_ERROR_INVALID_FILE_MODE;
|
|
|
|
/* find an empty entry in the file table */
|
|
file = hwInstData->files;
|
|
for (i = 0; i < EAS_MAX_FILE_HANDLES; i++)
|
|
{
|
|
/* is this slot being used? */
|
|
if (file->handle == NULL)
|
|
{
|
|
file->handle = locator->handle;
|
|
file->readAt = locator->readAt;
|
|
file->size = locator->size;
|
|
file->filePos = 0;
|
|
*pFile = file;
|
|
return EAS_SUCCESS;
|
|
}
|
|
file++;
|
|
}
|
|
|
|
/* too many open files */
|
|
return EAS_ERROR_MAX_FILES_OPEN;
|
|
}
|
|
|
|
|
|
/*----------------------------------------------------------------------------
|
|
*
|
|
* EAS_HWReadFile
|
|
*
|
|
* Read data from a file
|
|
*
|
|
*----------------------------------------------------------------------------
|
|
*/
|
|
/*lint -esym(715, hwInstData) hwInstData available for customer use */
|
|
EAS_RESULT EAS_HWReadFile (EAS_HW_DATA_HANDLE hwInstData, EAS_FILE_HANDLE file, void *pBuffer, EAS_I32 n, EAS_I32 *pBytesRead)
|
|
{
|
|
EAS_I32 count;
|
|
|
|
/* make sure we have a valid handle */
|
|
if (file->handle == NULL)
|
|
return EAS_ERROR_INVALID_HANDLE;
|
|
|
|
if (n < 0)
|
|
return EAS_EOF;
|
|
|
|
/* calculate the bytes to read */
|
|
count = file->size(file->handle) - file->filePos;
|
|
if (n < count)
|
|
count = n;
|
|
if (count < 0)
|
|
return EAS_EOF;
|
|
|
|
/* copy the data to the requested location, and advance the pointer */
|
|
if (count) {
|
|
count = file->readAt(file->handle, pBuffer, file->filePos, count);
|
|
}
|
|
file->filePos += count;
|
|
*pBytesRead = count;
|
|
|
|
/* were n bytes read? */
|
|
if (count!= n)
|
|
return EAS_EOF;
|
|
return EAS_SUCCESS;
|
|
}
|
|
|
|
/*----------------------------------------------------------------------------
|
|
*
|
|
* EAS_HWGetByte
|
|
*
|
|
* Read a byte from a file
|
|
*
|
|
*----------------------------------------------------------------------------
|
|
*/
|
|
/*lint -esym(715, hwInstData) hwInstData available for customer use */
|
|
EAS_RESULT EAS_HWGetByte (EAS_HW_DATA_HANDLE hwInstData, EAS_FILE_HANDLE file, void *p)
|
|
{
|
|
EAS_I32 numread;
|
|
return EAS_HWReadFile(hwInstData, file, p, 1, &numread);
|
|
}
|
|
|
|
/*----------------------------------------------------------------------------
|
|
*
|
|
* EAS_HWGetWord
|
|
*
|
|
* Read a 16 bit word from a file
|
|
*
|
|
*----------------------------------------------------------------------------
|
|
*/
|
|
/*lint -esym(715, hwInstData) hwInstData available for customer use */
|
|
EAS_RESULT EAS_HWGetWord (EAS_HW_DATA_HANDLE hwInstData, EAS_FILE_HANDLE file, void *p, EAS_BOOL msbFirst)
|
|
{
|
|
EAS_RESULT result;
|
|
EAS_U8 c1, c2;
|
|
|
|
/* read 2 bytes from the file */
|
|
if ((result = EAS_HWGetByte(hwInstData, file, &c1)) != EAS_SUCCESS)
|
|
return result;
|
|
if ((result = EAS_HWGetByte(hwInstData, file, &c2)) != EAS_SUCCESS)
|
|
return result;
|
|
|
|
/* order them as requested */
|
|
if (msbFirst)
|
|
*((EAS_U16*) p) = ((EAS_U16) c1 << 8) | c2;
|
|
else
|
|
*((EAS_U16*) p) = ((EAS_U16) c2 << 8) | c1;
|
|
|
|
return EAS_SUCCESS;
|
|
}
|
|
|
|
/*----------------------------------------------------------------------------
|
|
*
|
|
* EAS_HWGetDWord
|
|
*
|
|
* Returns the current location in the file
|
|
*
|
|
*----------------------------------------------------------------------------
|
|
*/
|
|
/*lint -esym(715, hwInstData) hwInstData available for customer use */
|
|
EAS_RESULT EAS_HWGetDWord (EAS_HW_DATA_HANDLE hwInstData, EAS_FILE_HANDLE file, void *p, EAS_BOOL msbFirst)
|
|
{
|
|
EAS_RESULT result;
|
|
EAS_U8 c1, c2,c3,c4;
|
|
|
|
/* read 4 bytes from the file */
|
|
if ((result = EAS_HWGetByte(hwInstData, file, &c1)) != EAS_SUCCESS)
|
|
return result;
|
|
if ((result = EAS_HWGetByte(hwInstData, file, &c2)) != EAS_SUCCESS)
|
|
return result;
|
|
if ((result = EAS_HWGetByte(hwInstData, file, &c3)) != EAS_SUCCESS)
|
|
return result;
|
|
if ((result = EAS_HWGetByte(hwInstData, file, &c4)) != EAS_SUCCESS)
|
|
return result;
|
|
|
|
/* order them as requested */
|
|
if (msbFirst)
|
|
*((EAS_U32*) p) = ((EAS_U32) c1 << 24) | ((EAS_U32) c2 << 16) | ((EAS_U32) c3 << 8) | c4;
|
|
else
|
|
*((EAS_U32*) p)= ((EAS_U32) c4 << 24) | ((EAS_U32) c3 << 16) | ((EAS_U32) c2 << 8) | c1;
|
|
|
|
return EAS_SUCCESS;
|
|
}
|
|
|
|
/*----------------------------------------------------------------------------
|
|
*
|
|
* EAS_HWFilePos
|
|
*
|
|
* Returns the current location in the file
|
|
*
|
|
*----------------------------------------------------------------------------
|
|
*/
|
|
/*lint -esym(715, hwInstData) hwInstData available for customer use */
|
|
EAS_RESULT EAS_HWFilePos (EAS_HW_DATA_HANDLE hwInstData, EAS_FILE_HANDLE file, EAS_I32 *pPosition)
|
|
{
|
|
|
|
/* make sure we have a valid handle */
|
|
if (file->handle == NULL)
|
|
return EAS_ERROR_INVALID_HANDLE;
|
|
|
|
*pPosition = file->filePos;
|
|
return EAS_SUCCESS;
|
|
} /* end EAS_HWFilePos */
|
|
|
|
/*----------------------------------------------------------------------------
|
|
*
|
|
* EAS_HWFileSeek
|
|
*
|
|
* Seek to a specific location in the file
|
|
*
|
|
*----------------------------------------------------------------------------
|
|
*/
|
|
/*lint -esym(715, hwInstData) hwInstData available for customer use */
|
|
EAS_RESULT EAS_HWFileSeek (EAS_HW_DATA_HANDLE hwInstData, EAS_FILE_HANDLE file, EAS_I32 position)
|
|
{
|
|
|
|
/* make sure we have a valid handle */
|
|
if (file->handle == NULL)
|
|
return EAS_ERROR_INVALID_HANDLE;
|
|
|
|
/* validate new position */
|
|
if ((position < 0) || (position > file->size(file->handle)))
|
|
return EAS_ERROR_FILE_SEEK;
|
|
|
|
/* save new position */
|
|
file->filePos = position;
|
|
return EAS_SUCCESS;
|
|
}
|
|
|
|
/*----------------------------------------------------------------------------
|
|
*
|
|
* EAS_HWFileSeekOfs
|
|
*
|
|
* Seek forward or back relative to the current position
|
|
*
|
|
*----------------------------------------------------------------------------
|
|
*/
|
|
/*lint -esym(715, hwInstData) hwInstData available for customer use */
|
|
EAS_RESULT EAS_HWFileSeekOfs (EAS_HW_DATA_HANDLE hwInstData, EAS_FILE_HANDLE file, EAS_I32 position)
|
|
{
|
|
|
|
/* make sure we have a valid handle */
|
|
if (file->handle == NULL)
|
|
return EAS_ERROR_INVALID_HANDLE;
|
|
|
|
/* determine the file position */
|
|
position += file->filePos;
|
|
if ((position < 0) || (position > file->size(file->handle)))
|
|
return EAS_ERROR_FILE_SEEK;
|
|
|
|
/* save new position */
|
|
file->filePos = position;
|
|
return EAS_SUCCESS;
|
|
}
|
|
|
|
|
|
/*----------------------------------------------------------------------------
|
|
*
|
|
* EAS_HWDupHandle
|
|
*
|
|
* Duplicate a file handle
|
|
*
|
|
*----------------------------------------------------------------------------
|
|
*/
|
|
EAS_RESULT EAS_HWDupHandle (EAS_HW_DATA_HANDLE hwInstData, EAS_FILE_HANDLE file, EAS_FILE_HANDLE *pDupFile)
|
|
{
|
|
EAS_HW_FILE *dupFile;
|
|
int i;
|
|
|
|
/* make sure we have a valid handle */
|
|
if (file->handle == NULL)
|
|
return EAS_ERROR_INVALID_HANDLE;
|
|
|
|
/* find an empty entry in the file table */
|
|
dupFile = hwInstData->files;
|
|
for (i = 0; i < EAS_MAX_FILE_HANDLES; i++)
|
|
{
|
|
/* is this slot being used? */
|
|
if (dupFile->handle == NULL)
|
|
{
|
|
/* copy info from the handle to be duplicated */
|
|
dupFile->handle = file->handle;
|
|
dupFile->filePos = file->filePos;
|
|
dupFile->readAt = file->readAt;
|
|
dupFile->size = file->size;
|
|
|
|
*pDupFile = dupFile;
|
|
return EAS_SUCCESS;
|
|
}
|
|
dupFile++;
|
|
}
|
|
|
|
/* too many open files */
|
|
return EAS_ERROR_MAX_FILES_OPEN;
|
|
}
|
|
|
|
/*----------------------------------------------------------------------------
|
|
*
|
|
* EAS_HWClose
|
|
*
|
|
* Wrapper for fclose function
|
|
*
|
|
*----------------------------------------------------------------------------
|
|
*/
|
|
EAS_RESULT EAS_HWCloseFile (EAS_HW_DATA_HANDLE hwInstData, EAS_FILE_HANDLE file1)
|
|
{
|
|
EAS_HW_FILE *file2,*dupFile;
|
|
int i;
|
|
|
|
|
|
/* make sure we have a valid handle */
|
|
if (file1->handle == NULL)
|
|
return EAS_ERROR_INVALID_HANDLE;
|
|
|
|
file1->handle = NULL;
|
|
return EAS_SUCCESS;
|
|
}
|
|
|
|
/*----------------------------------------------------------------------------
|
|
*
|
|
* EAS_HWVibrate
|
|
*
|
|
* Turn on/off vibrate function
|
|
*
|
|
*----------------------------------------------------------------------------
|
|
*/
|
|
/*lint -esym(715, hwInstData) hwInstData available for customer use */
|
|
EAS_RESULT EAS_HWVibrate (EAS_HW_DATA_HANDLE hwInstData, EAS_BOOL state)
|
|
{
|
|
EAS_ReportEx(_EAS_SEVERITY_NOFILTER, 0x1a54b6e8, 0x00000001 , state);
|
|
return EAS_SUCCESS;
|
|
} /* end EAS_HWVibrate */
|
|
|
|
/*----------------------------------------------------------------------------
|
|
*
|
|
* EAS_HWLED
|
|
*
|
|
* Turn on/off LED
|
|
*
|
|
*----------------------------------------------------------------------------
|
|
*/
|
|
/*lint -esym(715, hwInstData) hwInstData available for customer use */
|
|
EAS_RESULT EAS_HWLED (EAS_HW_DATA_HANDLE hwInstData, EAS_BOOL state)
|
|
{
|
|
EAS_ReportEx(_EAS_SEVERITY_NOFILTER, 0x1a54b6e8, 0x00000002 , state);
|
|
return EAS_SUCCESS;
|
|
}
|
|
|
|
/*----------------------------------------------------------------------------
|
|
*
|
|
* EAS_HWBackLight
|
|
*
|
|
* Turn on/off backlight
|
|
*
|
|
*----------------------------------------------------------------------------
|
|
*/
|
|
/*lint -esym(715, hwInstData) hwInstData available for customer use */
|
|
EAS_RESULT EAS_HWBackLight (EAS_HW_DATA_HANDLE hwInstData, EAS_BOOL state)
|
|
{
|
|
EAS_ReportEx(_EAS_SEVERITY_NOFILTER, 0x1a54b6e8, 0x00000003 , state);
|
|
return EAS_SUCCESS;
|
|
}
|
|
|
|
/*----------------------------------------------------------------------------
|
|
*
|
|
* EAS_HWYield
|
|
*
|
|
* This function is called periodically by the EAS library to give the
|
|
* host an opportunity to allow other tasks to run. There are two ways to
|
|
* use this call:
|
|
*
|
|
* If you have a multi-tasking OS, you can call the yield function in the
|
|
* OS to allow other tasks to run. In this case, return EAS_FALSE to tell
|
|
* the EAS library to continue processing when control returns from this
|
|
* function.
|
|
*
|
|
* If tasks run in a single thread by sequential function calls (sometimes
|
|
* call a "commutator loop"), return EAS_TRUE to cause the EAS Library to
|
|
* return to the caller. Be sure to check the number of bytes rendered
|
|
* before passing the audio buffer to the codec - it may not be filled.
|
|
* The next call to EAS_Render will continue processing until the buffer
|
|
* has been filled.
|
|
*
|
|
*----------------------------------------------------------------------------
|
|
*/
|
|
/*lint -esym(715, hwInstData) hwInstData available for customer use */
|
|
EAS_BOOL EAS_HWYield (EAS_HW_DATA_HANDLE hwInstData)
|
|
{
|
|
/* put your code here */
|
|
return EAS_FALSE;
|
|
}
|
|
|