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Made the overlay loader code part of the plugin library.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@8813 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Jens Arnold 2006-02-23 20:46:33 +00:00
parent df25cd5376
commit eeec278d21
5 changed files with 152 additions and 72 deletions
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71
apps/plugins/rockboy.c
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@ -9,7 +9,7 @@
*
* Copyright (C) 2005 Jens Arnold
*
* Overlay loader for rockboy on Archos
* Overlay loader stub plugin for rockboy on Archos
*
* All files in this archive are subject to the GNU General Public License.
* See the file COPYING in the source tree root for full license agreement.
@ -22,76 +22,13 @@
#if MEM <= 8 && !defined(SIMULATOR)
#include "overlay.h"
PLUGIN_HEADER
#define OVL_NAME "/.rockbox/viewers/rockboy.ovl"
#define OVL_DISPLAYNAME "RockBoy"
struct plugin_api* rb;
unsigned char *audiobuf;
int audiobuf_size;
/* this is the plugin entry point */
enum plugin_status plugin_start(struct plugin_api* api, void* parameter)
{
int fd, readsize;
struct plugin_header header;
rb = api;
fd = rb->open(OVL_NAME, O_RDONLY);
if (fd < 0)
{
rb->splash(2*HZ, true, "Can't open " OVL_NAME);
return PLUGIN_ERROR;
}
readsize = rb->read(fd, &header, sizeof(header));
rb->close(fd);
/* Close for now. Less code than doing it in all error checks.
* Would need to seek back anyway. */
if (readsize != sizeof(header))
{
rb->splash(2*HZ, true, "Reading" OVL_DISPLAYNAME " overlay failed.");
return PLUGIN_ERROR;
}
if (header.magic != PLUGIN_MAGIC || header.target_id != TARGET_ID)
{
rb->splash(2*HZ, true, OVL_DISPLAYNAME
" overlay: Incompatible model.");
return PLUGIN_ERROR;
}
if (header.api_version != PLUGIN_API_VERSION)
{
rb->splash(2*HZ, true, OVL_DISPLAYNAME
" overlay: Incompatible version.");
return PLUGIN_ERROR;
}
audiobuf = rb->plugin_get_audio_buffer(&audiobuf_size);
if (header.load_addr < audiobuf ||
header.end_addr > audiobuf + audiobuf_size)
{
rb->splash(2*HZ, true, OVL_DISPLAYNAME
" overlay doesn't fit into memory.");
return PLUGIN_ERROR;
}
rb->memset(header.load_addr, 0, header.end_addr - header.load_addr);
fd = rb->open(OVL_NAME, O_RDONLY);
if (fd < 0)
{
rb->splash(2*HZ, true, "Can't open " OVL_NAME);
return PLUGIN_ERROR;
}
readsize = rb->read(fd, header.load_addr, header.end_addr - header.load_addr);
rb->close(fd);
if (readsize < 0)
{
rb->splash(2*HZ, true, "Reading" OVL_DISPLAYNAME " overlay failed.");
return PLUGIN_ERROR;
}
return header.entry_point(api, parameter);
return run_overlay(api, parameter, "/.rockbox/viewers/rockboy.ovl", "RockBoy");
}
#endif