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/*
* 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->commit_discard_dcache());
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;
}
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