1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
|
#include "FifoAudioFrames.h"
/*
#define RESET 0
#define BRIGHT 1
#define DIM 2
#define UNDERLINE 3
#define BLINK 4
#define REVERSE 7
#define HIDDEN 8
#define BLACK 0
#define RED 1
#define GREEN 2
#define YELLOW 3
#define BLUE 4
#define MAGENTA 5
#define CYAN 6
#define WHITE 7
void textcolor(int attr, int fg, int bg) {
char command[13];
// Command is the control command to the terminal
sprintf(command, "%c[%d;%d;%dm", 0x1B, attr, fg + 30, bg + 40);
printf("%s", command);
}
*/
Fifo::Fifo(int s, gavl_audio_format_t * f) {
size = s ;
start = 0 ;
end = 0 ;
count = 0;
format = new gavl_audio_format_t;
gavl_audio_format_copy(format, f);
fifoPtr = new gavl_audio_frame_t * [size] ;
for(int i=0; i < size; i++) {
fifoPtr[i] = gavl_audio_frame_create( format );
}
pthread_mutex_init (&mut, 0);
//printf("Fifo::size=%d\n", size);
}
Fifo::~Fifo() {
//printf("deleting fifo \n");
for(int i=0; i < size; i++) {
gavl_audio_frame_destroy( fifoPtr[i] );
}
delete format;
delete[] fifoPtr;
//printf("deleted fifo \n");
}
// empty the fifo of any content
void Fifo::Flush() {
pthread_mutex_lock (&mut);
start = 0 ;
end = 0 ;
count = 0;
//printf("Fifo::flushed size=%d\n", count);
pthread_mutex_unlock (&mut);
}
// push an element onto the Fifo
bool Fifo::Append( gavl_audio_frame_t * source) {
bool ret = false;
//Dump("Appending a frame ");
pthread_mutex_lock (&mut);
if ( count < size ) { // if there is room for one more
int vs = gavl_audio_frame_copy(format, fifoPtr[end], source, 0,0, format->samples_per_frame, format->samples_per_frame) ;
fifoPtr[end]->timestamp = source->timestamp;
fifoPtr[end]->valid_samples =vs;
if (++end >= size)
end = 0;
count++;
ret = true;
} // no room in fifo, return false
pthread_mutex_unlock (&mut);
//Dump("Appended a frame ");
return ret;
}
// get an element off the Fifo
bool Fifo::Get( gavl_audio_frame_t * dest) {
bool ret = false;
//Dump("Getting a frame ");
pthread_mutex_lock (&mut);
if ( count > 0 ) { // if there any items in the fifo
int vs = gavl_audio_frame_copy(format, dest, fifoPtr[start], 0, 0, format->samples_per_frame, format->samples_per_frame) ;
dest->timestamp = fifoPtr[start]->timestamp;
dest->valid_samples = vs;
if ( ++start >= size )
start = 0;
count--;
ret = true;
}
pthread_mutex_unlock (&mut);
//Dump("Got a frame ");
return ret;
}
/*
void Fifo::Dump( char * c) {
int i,j = 0;
pthread_mutex_lock (&mut);
printf("%s -----------------------\n", c);
for( i=0;i<size;i++) {
//j=start+i;
//if (j >= size)
// j = j -size;
j=i;
if ( j == start)
textcolor(BRIGHT, GREEN, BLACK);
if (j == end)
textcolor(BRIGHT, RED, BLACK);
if (j == end && j == start)
textcolor(BRIGHT, YELLOW, BLACK);
printf("[%d]=%ld ", j, fifoPtr[j]->timestamp);
textcolor(RESET, BLACK, WHITE);
}
printf("\n");
printf("start=%02d, end=%02d, count=%02d\n", start,end,count);
printf("-----------------------\n");
pthread_mutex_unlock (&mut);
}
*/
bool Fifo::FreeSpace() { bool ret; pthread_mutex_lock(&mut); ret = (count < size);pthread_mutex_unlock (&mut); return ret;}
bool Fifo::isEmpty() { bool c; pthread_mutex_lock(&mut); c = (count == 0) ; pthread_mutex_unlock (&mut); return c; }
bool Fifo::isFull() { bool c; pthread_mutex_lock(&mut); c = (count == size ); pthread_mutex_unlock (&mut); return c; }
gavl_audio_format_t * Fifo::getFormat() { return format; };
float Fifo::getSizePercentage() { float ret; pthread_mutex_lock(&mut);ret = count / (float) size; pthread_mutex_unlock (&mut); return ret;};
|
