FreeCalypso > hg > fc-magnetite
view src/g23m-aci/gdd_dio/gdd_dio_queue.c @ 442:83d924b6721f
src/ui3/bmi/mmiIcons.c: same !LSCREEN fix as in TCS211 version
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Mon, 22 Jan 2018 04:36:47 +0000 |
parents | 53929b40109c |
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/* +----------------------------------------------------------------------------- | File : gdd_dio_queue.c +----------------------------------------------------------------------------- | Copyright 2002 Texas Instruments Berlin, AG | All rights reserved. | | This file is confidential and a trade secret of Texas | Instruments Berlin, AG | The receipt of or possession of this file does not convey | any rights to reproduce or disclose its contents or to | manufacture, use, or sell anything it may describe, in | whole, or in part, without the specific written consent of | Texas Instruments Berlin, AG. +----------------------------------------------------------------------------- | Purpose : Implements the queue functions for the DIO buffer FIFO +----------------------------------------------------------------------------- */ #define ENTITY_GDD_DIO /*==== INCLUDES =============================================================*/ #include "typedefs.h" /* to get Condat data types */ #include "vsi.h" /* to get a lot of macros */ #include <string.h> /* for memset */ #include "gdd_dio_queue.h" /*==== CONST ================================================================*/ /*==== LOCAL VARS ===========================================================*/ /*==== PRIVATE FUNCTIONS ====================================================*/ /*==== PUBLIC FUNCTIONS =====================================================*/ GLOBAL void gdd_dio_queue_clear(T_GDD_BUF_QUEUE *queue) { queue->next_in = 0; queue->next_out = 0; memset(queue->elems, 0, sizeof(T_dio_buffer *) * GDD_MAX_DIO_BUF); } BOOL gdd_dio_queue_is_empty(const T_GDD_BUF_QUEUE *queue) { return (queue->next_in == queue->next_out) && (0 == queue->elems[queue->next_out]); } GLOBAL BOOL gdd_dio_queue_is_full(const T_GDD_BUF_QUEUE *queue) { return (queue->next_in == queue->next_out) && !(0 == queue->elems[queue->next_out]); } GLOBAL BOOL gdd_dio_dequeue(T_GDD_BUF_QUEUE *queue, T_dio_buffer **elem) { if(gdd_dio_queue_is_empty(queue)) { return FALSE; } else { (*elem) = queue->elems[queue->next_out]; queue->elems[queue->next_out] = 0; ++(queue->next_out); if(queue->next_out EQ GDD_MAX_DIO_BUF) queue->next_out = 0; return TRUE; } } GLOBAL BOOL gdd_dio_queue_peek_next_for_dequeue (const T_GDD_BUF_QUEUE *queue, /*out*/T_dio_buffer **elem) { if(gdd_dio_queue_is_empty(queue)) { return FALSE; } else { (*elem) = queue->elems[queue->next_out]; return TRUE; } } GLOBAL BOOL gdd_dio_enqueue(T_dio_buffer *elem, T_GDD_BUF_QUEUE *queue, /*out*/U16 *pos) { if(gdd_dio_queue_is_full(queue)) { return FALSE; } else { queue->elems[queue->next_in] = elem; (*pos) = queue->next_in; ++(queue->next_in); if(queue->next_in EQ GDD_MAX_DIO_BUF) queue->next_in = 0; return TRUE; } } GLOBAL void gdd_dio_queue_peek(const T_GDD_BUF_QUEUE *queue, U16 pos, /*out*/T_dio_buffer **elem) { (*elem) = queue->elems[pos]; }