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annotate src/g23m-aci/gdd_dio/gdd_dio_queue.h @ 702:9394305d4ff5 default tip

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etm_audio.c: fix off-by-one error in auw of FIR coefficients This fix was already made in FC Tourmaline a while back, but it is also the kind of bugfix that deserves to be backported to Magnetite and Selenite as well.
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 31 Oct 2022 00:14:44 +0000
parents 53929b40109c
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 /*
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2 +-----------------------------------------------------------------------------
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3 | File : gdd_dio_queue.h
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4 +-----------------------------------------------------------------------------
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5 | Copyright 2002 Texas Instruments Berlin, AG
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6 | All rights reserved.
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7 |
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8 | This file is confidential and a trade secret of Texas
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9 | Instruments Berlin, AG
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10 | The receipt of or possession of this file does not convey
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11 | any rights to reproduce or disclose its contents or to
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12 | manufacture, use, or sell anything it may describe, in
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13 | whole, or in part, without the specific written consent of
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14 | Texas Instruments Berlin, AG.
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15 +-----------------------------------------------------------------------------
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16 | Purpose : Definitions for gdd_dio_queue.c
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17 +-----------------------------------------------------------------------------
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18 */
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19
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20 #ifndef GDD_DIO_QUEUE_H
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21 #define GDD_DIO_QUEUE_H
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22
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23 /*==== INCLUDES =============================================================*/
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24
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25 #include "gdd.h"
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26
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27 #include "p_dio.h"
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29
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30 /*==== DEFINITIONS ==========================================================*/
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31
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32 /**
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33 * Maximum numbers of simultaneous DIO buffers provided by PSI.
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34 * Might be increased at one stage in the future.
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35 */
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36 #define GDD_MAX_DIO_BUF 2
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37
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38 /**
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39 * Definition of buffer queue
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40 */
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41 typedef struct
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42 {
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43 T_dio_buffer * elems[GDD_MAX_DIO_BUF];
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44 U16 next_in;
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45 U16 next_out;
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46 } T_GDD_BUF_QUEUE;
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47
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48
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49 /*==== EXPORTS ===============================================================*/
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50
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51 /*
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52 +------------------------------------------------------------------------------
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53 | Function : gdd_dio_queue_clear
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54 +------------------------------------------------------------------------------
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55 | Description : Clear a queue
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56 |
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57 | Parameters : queue - pointer to queue to be cleared
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58 |
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59 +------------------------------------------------------------------------------
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60 */
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61 EXTERN void gdd_dio_queue_clear(T_GDD_BUF_QUEUE *queue);
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62
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63
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64 /*
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65 +------------------------------------------------------------------------------
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66 | Function : gdd_dio_queue_is_empty
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67 +------------------------------------------------------------------------------
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68 | Description : Check if a queue is empty
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69 |
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70 | Parameters : queue - pointer to queue to be checked
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71 |
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72 | Return : TRUE if queue is empty, FALSE otherwise
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73 +------------------------------------------------------------------------------
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74 */
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75 EXTERN BOOL gdd_dio_queue_is_empty(const T_GDD_BUF_QUEUE *queue);
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76
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77
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78 /*
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79 +------------------------------------------------------------------------------
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80 | Function : gdd_dio_queue_is_full
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81 +------------------------------------------------------------------------------
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82 | Description : Check if a queue is full
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83 |
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84 | Parameters : queue - pointer to queue to be checked
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85 |
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86 | Return : TRUE if queue is full, FALSE otherwise
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87 +------------------------------------------------------------------------------
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88 */
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89 EXTERN BOOL gdd_dio_queue_is_full(const T_GDD_BUF_QUEUE *queue);
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90
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91
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92 /*
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93 +------------------------------------------------------------------------------
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94 | Function : gdd_dio_enqueue
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95 +------------------------------------------------------------------------------
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96 | Description : Enqueue an item into the queue
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97 |
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98 | Parameters : elem - item to be enqueued
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99 | queue - pointer to queue to be modified
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100 | pos - to return the position of the enqueued item
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101 |
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102 | Return : TRUE if item is enqueued, FALSE if the queue is already full
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103 +------------------------------------------------------------------------------
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104 */
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105 EXTERN BOOL gdd_dio_enqueue(T_dio_buffer *elem, T_GDD_BUF_QUEUE *queue, /*out*/U16 *pos);
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106
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107
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108 /*
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109 +------------------------------------------------------------------------------
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110 | Function : gdd_dio_dequeue
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111 +------------------------------------------------------------------------------
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112 | Description : Dequeue an item into the queue
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113 |
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114 | Parameters : queue - pointer to queue to be modified
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115 | elem - to return the dequeued item
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116 |
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117 | Return : TRUE if item is dequeued, FALSE if the queue is empty
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118 +------------------------------------------------------------------------------
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119 */
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120 EXTERN BOOL gdd_dio_dequeue(T_GDD_BUF_QUEUE *queue, /*out*/T_dio_buffer **elem);
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121
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122 /*
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123 +------------------------------------------------------------------------------
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124 | Function : gdd_dio_queue_peek_next_for_dequeue
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125 +------------------------------------------------------------------------------
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126 | Description : Retrieves the element that is next to dequeue without actually
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127 | dequeuing it.
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128 |
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129 | Parameters : queue - pointer to queue
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130 | pos - position of element
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131 | elem - to output element value
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132 |
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133 | Return : TRUE if item is available, FALSE if the queue is empty
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134 +------------------------------------------------------------------------------
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135 */
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136 EXTERN BOOL gdd_dio_queue_peek_next_for_dequeue
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137 (const T_GDD_BUF_QUEUE *queue, T_dio_buffer **elem);
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138
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139 /*
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140 +------------------------------------------------------------------------------
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141 | Function : gdd_dio_queue_peek
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142 +------------------------------------------------------------------------------
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143 | Description : Retrieve element at specified position
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144 |
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145 | Parameters : queue - pointer to queue
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146 | pos - position of element
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147 | elem - to output element value
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148 |
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149 | Attention : This function does not do bounds checking
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150 +------------------------------------------------------------------------------
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151 */
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152 EXTERN void gdd_dio_queue_peek(const T_GDD_BUF_QUEUE *queue, U16 pos, /*out*/T_dio_buffer **elem);
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153
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154 #endif /* !GDD_DIO_QUEUE_H */
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155