From c9d66562afc15de210854b32f30976859bce2023 Mon Sep 17 00:00:00 2001 From: Dave Chapman Date: Mon, 7 Aug 2006 22:11:07 +0000 Subject: Initial commit of work-in-progress MPEG video player plugin based on libmpeg2. Works on all targets with colour LCDs, but most optimised for the ipod Color/Photo and Nano. It currently only plays raw MPEG-1 or MPEG-2 video streams (no audio). Also adds a new lcd_yuv_blit() function to the plugin API - currently only implemented for the ipod Color/Photo and Nano. git-svn-id: svn://svn.rockbox.org/rockbox/trunk@10479 a1c6a512-1295-4272-9138-f99709370657 --- apps/plugins/mpegplayer/alloc.c | 76 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 76 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..0a3568ae5b --- /dev/null +++ b/apps/plugins/mpegplayer/alloc.c @@ -0,0 +1,76 @@ +/* + * 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 + */ + +#include "plugin.h" + +#include "mpeg2.h" + +extern struct plugin_api* rb; + +long mem_ptr; +long bufsize; +unsigned char* mallocbuf; + +void mpeg2_alloc_init(unsigned char* buf, int mallocsize) +{ + mem_ptr = 0; + bufsize = mallocsize; + mallocbuf = buf; + + return; +} + +void * mpeg2_malloc (unsigned size, mpeg2_alloc_t reason) +{ + void* x; + + (void)reason; + + if (mem_ptr + (long)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 mpeg2_free(void* ptr) { + (void)ptr; +} + +/* gcc may want to use memcpy before rb is initialised, so here's a trivial + implementation */ + +void *memcpy(void *dest, const void *src, size_t n) { + size_t i; + char* d=(char*)dest; + char* s=(char*)src; + + for (i=0;i