rockbox/firmware/usbstack/iap/buffer.c
mojyack 3bb656625b usb: add usb iAP driver
add class driver source files.
also register iap audio sink.
usbstack/iap/libiap directory is imported from libiap.

Change-Id: I776c5caec33fe9efadc448e2e3b37d500bf19c9f
2026-05-03 12:40:54 -04:00

47 lines
1.7 KiB
C

/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
*
* Copyright (C) 2025 by Sho Tanimoto
*
* This program 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.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "core_alloc.h"
#include "buffer.h"
#include "macros.h"
bool iap_alloc_buffer(size_t size, struct IAPAllocResult* result) {
int handle = core_alloc_ex(size, &buflib_ops_locked);
check_act(handle > 0, return false);
uint8_t* ptr = core_get_data(handle);
result->handle = handle;
result->ptr = ptr;
return true;
}
bool iap_alloc_usb_send_buffer(size_t size, struct IAPAllocResult* result) {
/* + 31 to handle worst-case misalignment */
check_act(iap_alloc_buffer(size + 31, result), return false);
/* align to 32 */
result->ptr = (void*)((uintptr_t)(result->ptr + 31) & 0xffffffe0);
/* uncached */
#if defined(UNCACHED_ADDR) && CONFIG_CPU != AS3525
result->ptr = UNCACHED_ADDR(result->ptr);
#endif
return true;
}