blob: c317cec9249c8d4bc015addb453bc3718452b136 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
|
/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2002 by Linus Nielsen Feltzing
*
* 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include <stdio.h>
#include "buffer.h"
#include "panic.h"
#include "logf.h"
#if (CONFIG_PLATFORM & PLATFORM_HOSTED)
unsigned char audiobuffer[(MEMORYSIZE*1024-256)*1024];
unsigned char *audiobufend = audiobuffer + sizeof(audiobuffer);
#else
/* defined in linker script */
extern unsigned char audiobuffer[];
#endif
unsigned char *audiobuf;
#ifdef BUFFER_ALLOC_DEBUG
static unsigned char *audiobuf_orig_start;
struct buffer_start_marker
{
unsigned int magic;
size_t buffer_size;
};
#define BUF_MAGIC 0xDEADD0D0
struct buffer_end_marker
{
unsigned int magic;
int last;
};
#endif /* BUFFER_ALLOC_DEBUG */
void buffer_init(void)
{
/* 32-bit aligned */
audiobuf = (void *)(((unsigned long)audiobuffer + 3) & ~3);
#ifdef BUFFER_ALLOC_DEBUG
audiobuf_orig_start = audiobuf;
#endif /* BUFFER_ALLOC_DEBUG */
}
void *buffer_alloc(size_t size)
{
void *retval;
#ifdef BUFFER_ALLOC_DEBUG
struct buffer_start_marker *start;
struct buffer_end_marker *end;
#endif /* BUFFER_ALLOC_DEBUG */
/* 32-bit aligned */
size = (size + 3) & ~3;
/* Other code touches audiobuf. Make sure it stays aligned */
audiobuf = (void *)(((unsigned long)audiobuf + 3) & ~3);
retval = audiobuf;
#ifdef BUFFER_ALLOC_DEBUG
retval +=sizeof(struct buffer_start_marker);
if(size>0)
{
end=(struct buffer_end_marker*)(audiobuf - sizeof(struct buffer_end_marker));
if(end->magic == BUF_MAGIC)
{
end->last=0;
}
start=(struct buffer_start_marker*)audiobuf;
start->magic = BUF_MAGIC;
start->buffer_size = size;
end=(struct buffer_end_marker*)(audiobuf+sizeof(struct buffer_start_marker)+size);
end->magic = BUF_MAGIC;
end->last = 1;
audiobuf = ((unsigned char *)end) + sizeof(struct buffer_end_marker);
}
logf("Alloc %x %d",(unsigned int)retval,size);
#else /* !BUFFER_ALLOC_DEBUG */
audiobuf += size;
#endif /* BUFFER_ALLOC_DEBUG */
if (audiobuf > audiobufend) {
panicf("OOM: %d bytes", (int) size);
}
return retval;
}
#ifdef BUFFER_ALLOC_DEBUG
void buffer_alloc_check(char *name)
{
unsigned char *buf_ptr = audiobuf_orig_start;
struct buffer_start_marker *start;
struct buffer_end_marker *end;
while(buf_ptr < audiobuf)
{
start=(struct buffer_start_marker*)buf_ptr;
if(start->magic != BUF_MAGIC)
{
panicf("%s corrupted buffer %x start", name,(unsigned int)buf_ptr+sizeof(struct buffer_start_marker));
}
end=(struct buffer_end_marker*)(buf_ptr+sizeof(struct buffer_start_marker)+start->buffer_size);
if(end->magic != BUF_MAGIC)
{
panicf("%s corrupted %x end", name,(unsigned int)buf_ptr+sizeof(struct buffer_start_marker));
}
if(end->last)
break;
buf_ptr=((unsigned char *)end)+sizeof(struct buffer_end_marker);
}
}
#endif /* BUFFER_ALLOC_DEBUG */
|
