From 9d3d925295112a0080bc1d70fad170db9e1af2a9 Mon Sep 17 00:00:00 2001 From: Solomon Peachy Date: Thu, 13 Oct 2022 11:04:12 -0400 Subject: Revert "RFC: Get rid of mpegplayer plugin" This reverts commit d25d24812e8120c0eb133a412287ac030eb185c9. Change-Id: I1563223e343fb1e2eda72a45823b38350025ff93 --- apps/plugins/mpegplayer/alloc.c | 233 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 233 insertions(+) create mode 100644 apps/plugins/mpegplayer/alloc.c (limited to 'apps/plugins/mpegplayer/alloc.c') diff --git a/apps/plugins/mpegplayer/alloc.c b/apps/plugins/mpegplayer/alloc.c new file mode 100644 index 0000000000..cbf930a7eb --- /dev/null +++ b/apps/plugins/mpegplayer/alloc.c @@ -0,0 +1,233 @@ +/* + * alloc.c + * Copyright (C) 2000-2003 Michel Lespinasse + * Copyright (C) 1999-2000 Aaron Holtzman + * + * 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 + +/* 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; +} -- cgit v1.2.3