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A modern, network-enabled music player platform built on Rockbox technology. rockboxd.tsiry-sandratraina.com
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6.2 kB · 232 lines
C
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233/* * 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 * * 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;}