Giles Barton-Owen / WavPlayer

A library which allows the playing of Wav files using the TLV320

Dependents:   RSALB_hbridge_helloworld RSALB_lobster WavPlayer_test AudioCODEC_HelloWorld

RingBuffer/RingBuffer.cpp@3:a7380cfc1987, 2012-09-21 (annotated)

Committer:
p07gbar
Date:
Fri Sep 21 14:24:00 2012 +0000
Revision:
3:a7380cfc1987
Parent:
0:3695886f3495 
Minor fix

Who changed what in which revision?

UserRevisionLine numberNew contents of line
p07gbar 0:3695886f3495 1
p07gbar 0:3695886f3495 2
p07gbar 0:3695886f3495 3 #include "RingBuffer.h"
p07gbar 0:3695886f3495 4 //Serial debug(USBTX,USBRX);
p07gbar 0:3695886f3495 5
p07gbar 0:3695886f3495 6 RingBuffer::RingBuffer()
p07gbar 0:3695886f3495 7 {
p07gbar 0:3695886f3495 8 Start = 0;
p07gbar 0:3695886f3495 9 Finish = 0;
p07gbar 0:3695886f3495 10 for(int i = 0; i < RBLENGTH; i++)
p07gbar 0:3695886f3495 11 {
p07gbar 0:3695886f3495 12 for(int j = 0; j<RBWIDTH; j++)
p07gbar 0:3695886f3495 13 {
p07gbar 0:3695886f3495 14 Buffer[i][j] = 0;
p07gbar 0:3695886f3495 15 }
p07gbar 0:3695886f3495 16 }
p07gbar 0:3695886f3495 17 //debug.baud(115200);
p07gbar 0:3695886f3495 18 }
p07gbar 0:3695886f3495 19
p07gbar 0:3695886f3495 20 int RingBuffer::addToBuffer(int* input)
p07gbar 0:3695886f3495 21 {
p07gbar 0:3695886f3495 22 if(Finish == Start && Samples != 0)
p07gbar 0:3695886f3495 23 {
p07gbar 0:3695886f3495 24 return -1;
p07gbar 0:3695886f3495 25 }
p07gbar 0:3695886f3495 26 else
p07gbar 0:3695886f3495 27 {
p07gbar 0:3695886f3495 28 for(int i = 0; i < RBWIDTH; i++)
p07gbar 0:3695886f3495 29 {
p07gbar 0:3695886f3495 30 Buffer[Finish][i] = input[i];
p07gbar 0:3695886f3495 31 }
p07gbar 0:3695886f3495 32 sortFinishNS();
p07gbar 0:3695886f3495 33 return 0;
p07gbar 0:3695886f3495 34 }
p07gbar 0:3695886f3495 35
p07gbar 0:3695886f3495 36 }
p07gbar 0:3695886f3495 37
p07gbar 0:3695886f3495 38
p07gbar 0:3695886f3495 39 int RingBuffer::addToBufferS(int input, int across)
p07gbar 0:3695886f3495 40 {
p07gbar 0:3695886f3495 41 Buffer[Finish][across] = input;
p07gbar 0:3695886f3495 42 return 0;
p07gbar 0:3695886f3495 43 }
p07gbar 0:3695886f3495 44
p07gbar 0:3695886f3495 45
p07gbar 0:3695886f3495 46
p07gbar 0:3695886f3495 47 int RingBuffer::nextBuffer()
p07gbar 0:3695886f3495 48 {
p07gbar 0:3695886f3495 49 sortFinishNS();
p07gbar 0:3695886f3495 50 return 0;
p07gbar 0:3695886f3495 51 }
p07gbar 0:3695886f3495 52
p07gbar 0:3695886f3495 53
p07gbar 0:3695886f3495 54
p07gbar 0:3695886f3495 55 void RingBuffer::readFirst(int* output)
p07gbar 0:3695886f3495 56 {
p07gbar 0:3695886f3495 57 for(int i = 0; i < RBWIDTH; i++)
p07gbar 0:3695886f3495 58 {
p07gbar 0:3695886f3495 59 output[i] = Buffer[Start][i];
p07gbar 0:3695886f3495 60 }
p07gbar 0:3695886f3495 61 }
p07gbar 0:3695886f3495 62
p07gbar 0:3695886f3495 63 int RingBuffer::readFirstS(int across)
p07gbar 0:3695886f3495 64 {
p07gbar 0:3695886f3495 65 return Buffer[Start][across];
p07gbar 0:3695886f3495 66 }
p07gbar 0:3695886f3495 67
p07gbar 0:3695886f3495 68
p07gbar 0:3695886f3495 69
p07gbar 0:3695886f3495 70 void RingBuffer::readAt(int* output, int at)
p07gbar 0:3695886f3495 71 {
p07gbar 0:3695886f3495 72 for(int i = 0; i < RBWIDTH; i++)
p07gbar 0:3695886f3495 73 {
p07gbar 0:3695886f3495 74 output[i] = Buffer[at][i];
p07gbar 0:3695886f3495 75 }
p07gbar 0:3695886f3495 76 }
p07gbar 0:3695886f3495 77
p07gbar 0:3695886f3495 78 int RingBuffer::readAtS(int at, int across)
p07gbar 0:3695886f3495 79 {
p07gbar 0:3695886f3495 80 return Buffer[at][across];
p07gbar 0:3695886f3495 81 }
p07gbar 0:3695886f3495 82
p07gbar 0:3695886f3495 83
p07gbar 0:3695886f3495 84
p07gbar 0:3695886f3495 85 void RingBuffer::readLast(int*output)
p07gbar 0:3695886f3495 86 {
p07gbar 0:3695886f3495 87 for(int i = 0; i < RBWIDTH; i++)
p07gbar 0:3695886f3495 88 {
p07gbar 0:3695886f3495 89 output[i] = Buffer[Finish-1][i];
p07gbar 0:3695886f3495 90 }
p07gbar 0:3695886f3495 91 }
p07gbar 0:3695886f3495 92
p07gbar 0:3695886f3495 93
p07gbar 0:3695886f3495 94 int RingBuffer::readLastS(int across)
p07gbar 0:3695886f3495 95 {
p07gbar 0:3695886f3495 96 return Buffer[Finish-1][across];
p07gbar 0:3695886f3495 97 }
p07gbar 0:3695886f3495 98
p07gbar 0:3695886f3495 99 void RingBuffer::usedFirst()
p07gbar 0:3695886f3495 100 {
p07gbar 0:3695886f3495 101 sortStartUS();
p07gbar 0:3695886f3495 102 }
p07gbar 0:3695886f3495 103
p07gbar 0:3695886f3495 104 void RingBuffer::usedLast()
p07gbar 0:3695886f3495 105 {
p07gbar 0:3695886f3495 106 Finish--;
p07gbar 0:3695886f3495 107 Samples--;
p07gbar 0:3695886f3495 108 }
p07gbar 0:3695886f3495 109
p07gbar 0:3695886f3495 110 int RingBuffer::numberStored()
p07gbar 0:3695886f3495 111 {
p07gbar 0:3695886f3495 112 if(Samples > RBLENGTH)
p07gbar 0:3695886f3495 113 {
p07gbar 0:3695886f3495 114 if(Finish < Start)
p07gbar 0:3695886f3495 115 {
p07gbar 0:3695886f3495 116 Samples = Finish + (RBLENGTH - Start);
p07gbar 0:3695886f3495 117 }
p07gbar 0:3695886f3495 118 else
p07gbar 0:3695886f3495 119 {
p07gbar 0:3695886f3495 120 Samples = Start - Finish;
p07gbar 0:3695886f3495 121 }
p07gbar 0:3695886f3495 122 }
p07gbar 0:3695886f3495 123 return Samples;
p07gbar 0:3695886f3495 124 }
p07gbar 0:3695886f3495 125
p07gbar 0:3695886f3495 126 void RingBuffer::sortFinishNS()
p07gbar 0:3695886f3495 127 {
p07gbar 0:3695886f3495 128 Finish++;
p07gbar 0:3695886f3495 129 Samples++;
p07gbar 0:3695886f3495 130 if(Finish == RBLENGTH)
p07gbar 0:3695886f3495 131 {
p07gbar 0:3695886f3495 132 Finish = 0;
p07gbar 0:3695886f3495 133 //debug.printf("\n\rBOO! %3i %3i\n\r",Start, Finish);
p07gbar 0:3695886f3495 134 }
p07gbar 0:3695886f3495 135
p07gbar 0:3695886f3495 136 }
p07gbar 0:3695886f3495 137
p07gbar 0:3695886f3495 138 void RingBuffer::sortStartUS()
p07gbar 0:3695886f3495 139 {
p07gbar 0:3695886f3495 140 Start++;
p07gbar 0:3695886f3495 141 Samples--;
p07gbar 0:3695886f3495 142 if(Start == RBLENGTH)
p07gbar 0:3695886f3495 143 {
p07gbar 0:3695886f3495 144 Start = 0;
p07gbar 0:3695886f3495 145 }
p07gbar 0:3695886f3495 146 }