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/*
mpg321 - a fully free clone of mpg123.
fbuffer.c: Copyright (C) 2011-2012 Nanakos Chrysostomos
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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <stdio.h>
#include <sys/types.h>
#include <unistd.h>
#include <signal.h>
#include <ao/ao.h>
#include <sys/sem.h>
#include "mpg321.h"
ao_device *play_device = NULL;
extern int quit_now;
extern int stop_playing_file;
extern int buffer_size;
signed long total_played_frames = 0;
void output_sighandler (int sig) {
ao_close (play_device);
ao_shutdown ();
exit (EXIT_SUCCESS);
}
void frame_buffer_p(){
static unsigned int rate = 0;
static int channels = 0;
struct mad_header *header = NULL;
output_frame *oframe = NULL;
static struct sembuf read_sops = {0, 1, 0};
static struct sembuf write_sops = {1, -1, 0};
static struct sembuf end_sops = {2, 1, 0};
decoded_frames *dframes = NULL;
dframes = Decoded_Frames;
dframes->total_played_frames = 0;
pid_t ppid;
ppid = getppid ();
output_buffer_position = 0;
signal (SIGUSR1, output_sighandler);
ao_initialize();
if (check_default_play_device_buffer() == -1) {
fprintf(stderr,"Unable to open play device");
kill (ppid, SIGUSR1);
handle_signals (SIGUSR1);
}
while (1) {
semop (semarray, &write_sops, 1);
oframe = (Output_Queue+output_buffer_position);
header = &(oframe->header);
if (!play_device) {
channels = MAD_NCHANNELS(header);
rate = header->samplerate;
play_device = open_ao_playdevice_buffer(header);
if (!play_device) {
fprintf(stderr,"Unable to open play device");
kill (ppid, SIGUSR1);
handle_signals (SIGUSR1);
}
} else if ((channels != MAD_NCHANNELS(header) || rate != header->samplerate) && playdevice_is_live()){
ao_close(play_device);
channels = MAD_NCHANNELS(header);
rate = header->samplerate;
play_device = open_ao_playdevice_buffer(header);
if (!play_device) {
fprintf(stderr,"Unable to open play device");
kill (ppid, SIGUSR1);
handle_signals (SIGUSR1);
}
}
if ((options.opt & MPG321_REMOTE_PLAY))
fprintf(stderr,"%s",oframe->time);
else if( options.opt & MPG321_VERBOSE_PLAY )
{
if(dframes->timer > 0)
fprintf(stderr,"Volume: %lu%% %s\r",dframes->bvolume,oframe->time);
else
fprintf(stderr,"%s",oframe->time);
}
if(oframe->num_frames <= 0 || dframes->quit_now || dframes->stop_playing_file || (dframes->is_http && dframes->done && (dframes->total_decoded_frames-total_played_frames)<=1)
|| (dframes->is_file && oframe->seconds <=0 && dframes->done) || (dframes->is_file && dframes->done && (dframes->total_decoded_frames-1 == total_played_frames))
|| (dframes->is_http && dframes->done && (dframes->total_decoded_frames-1 == total_played_frames)) || (dframes->done && dframes->total_decoded_frames == 0) )
{
union semun sem_ops;
sem_ops.val = buffer_size-1;
semctl(semarray,0,SETVAL,sem_ops);
sem_ops.val = 0;
semctl(semarray,1,SETVAL,sem_ops);
output_buffer_position = 0;
if(stop_playing_file) stop_playing_file = 0;
if(quit_now) quit_now = 0;
dframes->total_decoded_frames = 0;
dframes->done = 0;
dframes->is_http = 0;
dframes->is_file = 0;
dframes->stop_playing_file = 0;
total_played_frames = 0;
semop(semarray,&end_sops,1);
continue;
}
ao_play(play_device, oframe->data, oframe->length);
total_played_frames+=1;
dframes->total_played_frames += 1;
output_buffer_position = getnext_place(output_buffer_position);
semop (semarray, &read_sops, 1);
if(dframes->timer > 0)
{
dframes->timer++;
if(dframes->timer > 40)
{
if(!(options.opt & MPG321_VERBOSE_PLAY))
fprintf(stderr," \r");
dframes->timer = -1;
fflush(stderr);
}
}
}
}
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