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/*
* Copyright (C) 2003-2010 August Black
*
* 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 program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#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);
}
*/
FifoAudioFrames::FifoAudioFrames(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("FifoAudioFrames::size=%d\n", size);
}
FifoAudioFrames::~FifoAudioFrames() {
//printf("deleting fifo \n");
for(int i=0; i < size; i++) {
gavl_audio_frame_destroy( fifoPtr[i] );
}
delete format;
delete[] fifoPtr;
pthread_mutex_destroy (&mut);
//printf("deleted fifo \n");
}
// empty the fifo of any content
void FifoAudioFrames::Flush() {
pthread_mutex_lock (&mut);
start = 0 ;
end = 0 ;
count = 0;
//printf("FifoAudioFrames::flushed size=%d\n", count);
pthread_mutex_unlock (&mut);
}
// push an element onto the FifoAudioFrames
bool FifoAudioFrames::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 FifoAudioFrames
bool FifoAudioFrames::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 FifoAudioFrames::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 FifoAudioFrames::FreeSpace() {
bool ret = false;
//printf("asking for free space on audio fifo\n");
pthread_mutex_lock(&mut);
ret = (count < size);
pthread_mutex_unlock (&mut);
return ret;
}
bool FifoAudioFrames::isEmpty() { bool c; pthread_mutex_lock(&mut); c = (count == 0) ; pthread_mutex_unlock (&mut); return c; }
bool FifoAudioFrames::isFull() { bool c; pthread_mutex_lock(&mut); c = (count == size ); pthread_mutex_unlock (&mut); return c; }
gavl_audio_format_t * FifoAudioFrames::getFormat() { return format; };
float FifoAudioFrames::getSizePercentage() { float ret; pthread_mutex_lock(&mut);ret = count / (float) size; pthread_mutex_unlock (&mut); return ret;};
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