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
227
228
229
230
231
232
233
234
|
/*
* alloc.c
* Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org>
* Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
*
* This file is part of mpeg2dec, a free MPEG-2 video stream decoder.
* See http://libmpeg2.sourceforge.net/ for updates.
*
* mpeg2dec 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.
*
* mpeg2dec is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* $Id$
* libmpeg2 sync history:
* 2008-07-01 - CVS revision 1.13
*/
#include "plugin.h"
#include "mpegplayer.h"
#include <system.h>
/* Main allocator */
static off_t mem_ptr;
static size_t bufsize;
static unsigned char* mallocbuf;
/* libmpeg2 allocator */
static off_t mpeg2_mem_ptr SHAREDBSS_ATTR;
static size_t mpeg2_bufsize SHAREDBSS_ATTR;
static unsigned char *mpeg2_mallocbuf SHAREDBSS_ATTR;
static unsigned char *mpeg2_bufallocbuf SHAREDBSS_ATTR;
#if defined(DEBUG) || defined(SIMULATOR)
const char * mpeg_get_reason_str(int reason)
{
const char *str;
switch (reason)
{
case MPEG2_ALLOC_MPEG2DEC:
str = "MPEG2_ALLOC_MPEG2DEC";
break;
case MPEG2_ALLOC_CHUNK:
str = "MPEG2_ALLOC_CHUNK";
break;
case MPEG2_ALLOC_YUV:
str = "MPEG2_ALLOC_YUV";
break;
case MPEG2_ALLOC_CONVERT_ID:
str = "MPEG2_ALLOC_CONVERT_ID";
break;
case MPEG2_ALLOC_CONVERTED:
str = "MPEG2_ALLOC_CONVERTED";
break;
case MPEG_ALLOC_MPEG2_BUFFER:
str = "MPEG_ALLOC_MPEG2_BUFFER";
break;
case MPEG_ALLOC_AUDIOBUF:
str = "MPEG_ALLOC_AUDIOBUF";
break;
case MPEG_ALLOC_PCMOUT:
str = "MPEG_ALLOC_PCMOUT";
break;
case MPEG_ALLOC_DISKBUF:
str = "MPEG_ALLOC_DISKBUF";
break;
case MPEG_ALLOC_CODEC_MALLOC:
str = "MPEG_ALLOC_CODEC_MALLOC";
break;
case MPEG_ALLOC_CODEC_CALLOC:
str = "MPEG_ALLOC_CODEC_CALLOC";
break;
default:
str = "Unknown";
}
return str;
}
#endif
static void * mpeg_malloc_internal (unsigned char *mallocbuf,
off_t *mem_ptr,
size_t bufsize,
unsigned size,
int reason)
{
void *x;
DEBUGF("mpeg_alloc_internal: bs:%lu s:%u reason:%s (%d)\n",
(unsigned long)bufsize, size, mpeg_get_reason_str(reason), reason);
if ((size_t) (*mem_ptr + size) > bufsize)
{
DEBUGF("OUT OF MEMORY\n");
return NULL;
}
x = &mallocbuf[*mem_ptr];
*mem_ptr += (size + 3) & ~3; /* Keep memory 32-bit aligned */
return x;
(void)reason;
}
void *mpeg_malloc(size_t size, mpeg2_alloc_t reason)
{
return mpeg_malloc_internal(mallocbuf, &mem_ptr, bufsize, size,
reason);
}
void *mpeg_malloc_all(size_t *size_out, mpeg2_alloc_t reason)
{
/* Can steal all but MIN_MEMMARGIN */
if (bufsize - mem_ptr < MIN_MEMMARGIN)
return NULL;
*size_out = bufsize - mem_ptr - MIN_MEMMARGIN;
return mpeg_malloc(*size_out, reason);
}
bool mpeg_alloc_init(unsigned char *buf, size_t mallocsize)
{
mem_ptr = 0;
/* Cache-align buffer or 4-byte align */
mallocbuf = buf;
bufsize = mallocsize;
ALIGN_BUFFER(mallocbuf, bufsize, CACHEALIGN_UP(4));
/* Separate allocator for video */
mpeg2_mem_ptr = 0;
mpeg2_mallocbuf = mallocbuf;
mpeg2_bufallocbuf = mallocbuf;
mpeg2_bufsize = CACHEALIGN_UP(LIBMPEG2_ALLOC_SIZE);
if (mpeg_malloc_internal(mallocbuf, &mem_ptr,
bufsize, mpeg2_bufsize,
MPEG_ALLOC_MPEG2_BUFFER) == NULL)
{
return false;
}
IF_COP(rb->cpucache_invalidate());
return true;
}
/* allocate non-dedicated buffer space which mpeg2_mem_reset will free */
void * mpeg2_malloc(unsigned size, mpeg2_alloc_t reason)
{
void *ptr = mpeg_malloc_internal(mpeg2_mallocbuf, &mpeg2_mem_ptr,
mpeg2_bufsize, size, reason);
/* libmpeg2 expects zero-initialized allocations */
if (ptr)
rb->memset(ptr, 0, size);
return ptr;
}
/* allocate dedicated buffer - memory behind buffer pointer becomes dedicated
so order is important */
void * mpeg2_bufalloc(unsigned size, mpeg2_alloc_t reason)
{
void *buf = mpeg2_malloc(size, reason);
if (buf == NULL)
return NULL;
mpeg2_bufallocbuf = &mpeg2_mallocbuf[mpeg2_mem_ptr];
return buf;
}
/* return unused buffer portion and size */
void * mpeg2_get_buf(size_t *size)
{
if ((size_t)mpeg2_mem_ptr + 32 >= mpeg2_bufsize)
return NULL;
*size = mpeg2_bufsize - mpeg2_mem_ptr;
return &mpeg2_mallocbuf[mpeg2_mem_ptr];
}
/* de-allocate all non-dedicated buffer space */
void mpeg2_mem_reset(void)
{
DEBUGF("mpeg2_mem_reset\n");
mpeg2_mem_ptr = mpeg2_bufallocbuf - mpeg2_mallocbuf;
}
/* The following are expected by libmad */
void * codec_malloc(size_t size)
{
void* ptr;
ptr = mpeg_malloc_internal(mallocbuf, &mem_ptr,
bufsize, size, MPEG_ALLOC_CODEC_MALLOC);
if (ptr)
rb->memset(ptr,0,size);
return ptr;
}
void * codec_calloc(size_t nmemb, size_t size)
{
void* ptr;
ptr = mpeg_malloc_internal(mallocbuf, &mem_ptr,
bufsize, nmemb*size,
MPEG_ALLOC_CODEC_CALLOC);
if (ptr)
rb->memset(ptr,0,size);
return ptr;
}
void codec_free(void* ptr)
{
DEBUGF("codec_free - %p\n", ptr);
#if 0
mem_ptr = (void *)ptr - (void *)mallocbuf;
#endif
(void)ptr;
}
|
