1 files changed, 233 insertions, 0 deletions

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 <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;
+}