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
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
|
/* ***** BEGIN LICENSE BLOCK *****
* Version: RCSL 1.0/RPSL 1.0
*
* Portions Copyright (c) 1995-2002 RealNetworks, Inc. All Rights Reserved.
*
* The contents of this file, and the files included with this file, are
* subject to the current version of the RealNetworks Public Source License
* Version 1.0 (the "RPSL") available at
* http://www.helixcommunity.org/content/rpsl unless you have licensed
* the file under the RealNetworks Community Source License Version 1.0
* (the "RCSL") available at http://www.helixcommunity.org/content/rcsl,
* in which case the RCSL will apply. You may also obtain the license terms
* directly from RealNetworks. You may not use this file except in
* compliance with the RPSL or, if you have a valid RCSL with RealNetworks
* applicable to this file, the RCSL. Please see the applicable RPSL or
* RCSL for the rights, obligations and limitations governing use of the
* contents of the file.
*
* This file is part of the Helix DNA Technology. RealNetworks is the
* developer of the Original Code and owns the copyrights in the portions
* it created.
*
* This file, and the files included with this file, is distributed and made
* available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
*
* Technology Compatibility Kit Test Suite(s) Location:
* http://www.helixcommunity.org/content/tck
*
* Contributor(s):
*
* ***** END LICENSE BLOCK ***** */
/**************************************************************************************
* Fixed-point MP3 decoder
* Jon Recker (jrecker@real.com), Ken Cooke (kenc@real.com)
* June 2003
*
* buffers.c - allocation and freeing of internal MP3 decoder buffers
*
* All memory allocation for the codec is done in this file, so if you don't want
* to use other the default system malloc() and free() for heap management this is
* the only file you'll need to change.
**************************************************************************************/
#include "coder.h"
#ifndef _WIN32
#ifdef DEMO_HELIX_FOOTPRINT
#include "dv_debug_usart.h"
#endif
#endif
/**************************************************************************************
* Function: ClearBuffer
*
* Description: fill buffer with 0's
*
* Inputs: pointer to buffer
* number of bytes to fill with 0
*
* Outputs: cleared buffer
*
* Return: none
*
* Notes: slow, platform-independent equivalent to memset(buf, 0, nBytes)
**************************************************************************************/
#ifndef MPDEC_ALLOCATOR
static void ClearBuffer(void *buf, int nBytes)
{
int i;
unsigned char *cbuf = (unsigned char *)buf;
for (i = 0; i < nBytes; i++)
cbuf[i] = 0;
return;
}
#endif
/**************************************************************************************
* Function: AllocateBuffers
*
* Description: allocate all the memory needed for the MP3 decoder
*
* Inputs: none
*
* Outputs: none
*
* Return: pointer to MP3DecInfo structure (initialized with pointers to all
* the internal buffers needed for decoding, all other members of
* MP3DecInfo structure set to 0)
*
* Notes: if one or more mallocs fail, function frees any buffers already
* allocated before returning
**************************************************************************************/
MP3DecInfo *AllocateBuffers(void)
{
MP3DecInfo *mp3DecInfo;
#ifdef MPDEC_ALLOCATOR
FrameHeader *fh;
SideInfo *si;
ScaleFactorInfo *sfi;
HuffmanInfo *hi;
DequantInfo *di;
IMDCTInfo *mi;
SubbandInfo *sbi;
mp3DecInfo = (MP3DecInfo *)MPDEC_ALLOCATOR(sizeof(MP3DecInfo));
if (!mp3DecInfo)
{
#ifndef _WIN32
#ifdef DEMO_HELIX_FOOTPRINT
sprintf(COPY_DEBUG_BUFFER,"mp3DecInfo size: %d\n", (int)sizeof(MP3DecInfo));
DV_DEBUG_USART_Trace( COPY_DEBUG_BUFFER );
#endif
#endif
return 0;
}
hi = (HuffmanInfo *) MPDEC_ALLOCATOR(sizeof(HuffmanInfo));
sbi = (SubbandInfo *) MPDEC_ALLOCATOR(sizeof(SubbandInfo));
mi = (IMDCTInfo *) MPDEC_ALLOCATOR(sizeof(IMDCTInfo));
di = (DequantInfo *) MPDEC_ALLOCATOR(sizeof(DequantInfo));
si = (SideInfo *) MPDEC_ALLOCATOR(sizeof(SideInfo));
sfi = (ScaleFactorInfo *) MPDEC_ALLOCATOR(sizeof(ScaleFactorInfo));
fh = (FrameHeader *) MPDEC_ALLOCATOR(sizeof(FrameHeader));
if (!fh || !si || !sfi || !hi || !di || !mi || !sbi) {
#ifndef _WIN32
#ifdef DEMO_HELIX_FOOTPRINT
sprintf(COPY_DEBUG_BUFFER,"mp3DecInfo:%d[%d] | fh:%d[%d] | si:%d[%d] \
| sfi:%d[%d] | hi:%d[%d] | di:%d[%d] | mi:%d[%d] | sbi:%d[%d]\n",
(int)mp3DecInfo, (int)sizeof(MP3DecInfo), (int)fh, (int)sizeof(FrameHeader),
(int)si, (int)sizeof(SideInfo), (int)sfi, (int)sizeof(ScaleFactorInfo),
(int)hi, (int)sizeof(HuffmanInfo), (int)di, (int)sizeof(DequantInfo),
(int)mi, (int)sizeof(IMDCTInfo), (int)sbi, (int)sizeof(SubbandInfo) );
DV_DEBUG_USART_Trace( COPY_DEBUG_BUFFER );
#endif
#endif
FreeBuffers(mp3DecInfo); // safe to call - only frees memory that was successfully allocated
return 0;
}
#else
// Buffers:
static char s_mp3DecInfo[sizeof(MP3DecInfo)];
static char fh[sizeof(FrameHeader)];
static char si[sizeof(SideInfo)];
static char sfi[sizeof(ScaleFactorInfo)];
static char hi[sizeof(HuffmanInfo)];
static char di[sizeof(DequantInfo)];
static char mi[sizeof(IMDCTInfo)];
static char sbi[sizeof(SubbandInfo)];
mp3DecInfo = (MP3DecInfo *)s_mp3DecInfo;
ClearBuffer(mp3DecInfo, sizeof(MP3DecInfo));
/* important to do this - DSP primitives assume a bunch of state variables are 0 on first use */
ClearBuffer(fh, sizeof(FrameHeader));
ClearBuffer(si, sizeof(SideInfo));
ClearBuffer(sfi, sizeof(ScaleFactorInfo));
ClearBuffer(hi, sizeof(HuffmanInfo));
ClearBuffer(di, sizeof(DequantInfo));
ClearBuffer(mi, sizeof(IMDCTInfo));
ClearBuffer(sbi, sizeof(SubbandInfo));
#endif
mp3DecInfo->FrameHeaderPS = (void *)fh;
mp3DecInfo->SideInfoPS = (void *)si;
mp3DecInfo->ScaleFactorInfoPS = (void *)sfi;
mp3DecInfo->HuffmanInfoPS = (void *)hi;
mp3DecInfo->DequantInfoPS = (void *)di;
mp3DecInfo->IMDCTInfoPS = (void *)mi;
mp3DecInfo->SubbandInfoPS = (void *)sbi;
#ifndef _WIN32
#ifdef DEMO_HELIX_FOOTPRINT
sprintf(COPY_DEBUG_BUFFER, "Total decoder malloc size: %d\n",
(int)(sizeof(MP3DecInfo) + sizeof(FrameHeader) + sizeof(SideInfo)
+ sizeof(ScaleFactorInfo) + sizeof(HuffmanInfo) + sizeof(DequantInfo)
+ sizeof(IMDCTInfo) + sizeof(SubbandInfo)));
DV_DEBUG_USART_Trace( COPY_DEBUG_BUFFER );
#endif
#endif
return mp3DecInfo;
}
#ifdef MPDEC_FREE
#define SAFE_FREE(x) {if (x) MPDEC_FREE(x); (x) = 0;} /* helper macro */
#else
#define SAFE_FREE(x) { (x) = 0; }
#endif
/**************************************************************************************
* Function: FreeBuffers
*
* Description: frees all the memory used by the MP3 decoder
*
* Inputs: pointer to initialized MP3DecInfo structure
*
* Outputs: none
*
* Return: none
*
* Notes: safe to call even if some buffers were not allocated (uses SAFE_FREE)
**************************************************************************************/
void FreeBuffers(MP3DecInfo *mp3DecInfo)
{
if (!mp3DecInfo)
return;
SAFE_FREE(mp3DecInfo->FrameHeaderPS);
SAFE_FREE(mp3DecInfo->SideInfoPS);
SAFE_FREE(mp3DecInfo->ScaleFactorInfoPS);
SAFE_FREE(mp3DecInfo->HuffmanInfoPS);
SAFE_FREE(mp3DecInfo->DequantInfoPS);
SAFE_FREE(mp3DecInfo->IMDCTInfoPS);
SAFE_FREE(mp3DecInfo->SubbandInfoPS);
SAFE_FREE(mp3DecInfo);
}
|
