root/trunk/libffado/tests/streaming/teststreaming.c

/*
 * Copyright (C) 2005-2007 by by Pieter Palmers
 *
 * This file is part of FFADO
 * FFADO = Free Firewire (pro-)audio drivers for linux
 *
 * FFADO is based upon FreeBoB.
 *
 * FFADO 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.
 * FFADO 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 FFADO; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA.
 */

/**
 * Test application for the per-stream decode API
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include <signal.h>

#include "libffado/ffado.h"

#include "debugtools.h"

int run;

static void sighandler (int sig)
{
        run = 0;
}

int main(int argc, char *argv[])
{

        #define PERIOD_SIZE 1024

        int samplesread=0, sampleswritten=0;
        int nb_in_channels=0, nb_out_channels=0;
        int retval=0;
        int i=0;
        int start_flag = 0;

        int nb_periods=0;

        ffado_sample_t **audiobuffer;
        ffado_sample_t *nullbuffer;
        
        run=1;

        printf("Ffado streaming test application\n");

        signal (SIGINT, sighandler);
        signal (SIGPIPE, sighandler);

        ffado_device_info_t device_info;

        ffado_options_t dev_options;

        dev_options.sample_rate=44100;
        dev_options.period_size=PERIOD_SIZE;

        dev_options.nb_buffers=3;

        dev_options.realtime=1;
        dev_options.packetizer_priority=60;

        dev_options.verbose=5;
        
        dev_options.slave_mode=0;
        dev_options.snoop_mode=0;
    
        ffado_device_t *dev=ffado_streaming_init(device_info, dev_options);

        if (!dev) {
                fprintf(stderr,"Could not init FFADO Streaming layer\n");
                exit(-1);
        }

        nb_in_channels=ffado_streaming_get_nb_capture_streams(dev);
        nb_out_channels=ffado_streaming_get_nb_playback_streams(dev);

        /* allocate intermediate buffers */
        audiobuffer=calloc(nb_in_channels,sizeof(ffado_sample_t *));
        for (i=0;i<nb_in_channels;i++) {
                audiobuffer[i]=calloc(PERIOD_SIZE+1,sizeof(ffado_sample_t));
        }
        
        nullbuffer=calloc(PERIOD_SIZE+1,sizeof(ffado_sample_t));
        
        /* open the files to write to*/
        FILE* fid_out[nb_out_channels];
        FILE* fid_in[nb_in_channels];
        char name[256];

        for (i=0;i<nb_out_channels;i++) {
                snprintf(name,sizeof(name),"out_ch_%02d",i);

                fid_out[i]=fopen(name,"w");

                ffado_streaming_get_playback_stream_name(dev,i,name,sizeof(name));
                fprintf(fid_out[i],"Channel name: %s\n",name);
                switch (ffado_streaming_get_playback_stream_type(dev,i)) {
                case ffado_stream_type_audio:
                        fprintf(fid_out[i],"Channel type: audio\n");
                        break;
                case ffado_stream_type_midi:
                        fprintf(fid_out[i],"Channel type: midi\n");
                        break;
                case ffado_stream_type_unknown:
                        fprintf(fid_out[i],"Channel type: unknown\n");
                        break;
                default:
                case ffado_stream_type_invalid:
                        fprintf(fid_out[i],"Channel type: invalid\n");
                        break;
                }

        }
        for (i=0;i<nb_in_channels;i++) {
                snprintf(name,sizeof(name),"in_ch_%02d",i);
                fid_in[i]=fopen(name,"w");

                ffado_streaming_get_capture_stream_name(dev,i,name,sizeof(name));
                fprintf(fid_in[i], "Channel name: %s\n",name);
                switch (ffado_streaming_get_capture_stream_type(dev,i)) {
                case ffado_stream_type_audio:
                        fprintf(fid_in[i], "Channel type: audio\n");
                        break;
                case ffado_stream_type_midi:
                        fprintf(fid_in[i], "Channel type: midi\n");
                        break;
                case ffado_stream_type_unknown:
                        fprintf(fid_in[i],"Channel type: unknown\n");
                        break;
                default:
                case ffado_stream_type_invalid:
                        fprintf(fid_in[i],"Channel type: invalid\n");
                        break;
                }
        }

        ffado_streaming_prepare(dev);
        start_flag = ffado_streaming_start(dev);

        fprintf(stderr,"Entering receive loop (%d,%d)\n",nb_in_channels,nb_out_channels);
        while(run && start_flag==0) {
                retval = ffado_streaming_wait(dev);
                if (retval < 0) {
                        fprintf(stderr,"Xrun\n");
                        ffado_streaming_reset(dev);
                        continue;
                }

//              ffado_streaming_transfer_buffers(dev);
                ffado_streaming_transfer_capture_buffers(dev);
                ffado_streaming_transfer_playback_buffers(dev);
                
                nb_periods++;

                if((nb_periods % 32)==0) {
                        fprintf(stderr,"\r%05d periods",nb_periods);
                }

                for(i=0;i<nb_in_channels;i++) {
                        switch (ffado_streaming_get_capture_stream_type(dev,i)) {
                        case ffado_stream_type_audio:
                                samplesread=ffado_streaming_read(dev, i, audiobuffer[i], PERIOD_SIZE);
                                break;
                        case ffado_stream_type_midi:
                                samplesread=ffado_streaming_read(dev, i, audiobuffer[i], PERIOD_SIZE);
                                break;
                        default:
                                ;
                        }
//                      fprintf(fid_in[i], "---- Period read  (%d samples) ----\n",samplesread);
//                      hexDumpToFile(fid_in[i],(unsigned char*)audiobuffer[i],samplesread*sizeof(ffado_sample_t));
                }

                for(i=0;i<nb_out_channels;i++) {
                        ffado_sample_t *buff;
                        if (i<nb_in_channels) {
                                buff=audiobuffer[i];
                        } else {
                                buff=nullbuffer;
                        }
                        
                        switch (ffado_streaming_get_playback_stream_type(dev,i)) {
                        case ffado_stream_type_audio:
                                sampleswritten=ffado_streaming_write(dev, i, buff, PERIOD_SIZE);
                                break;
                        case ffado_stream_type_midi:
                                sampleswritten=ffado_streaming_write(dev, i, buff, PERIOD_SIZE);
                                break;
                        default:
                                ;
                        }
//                      fprintf(fid_out[i], "---- Period write (%d samples) ----\n",sampleswritten);
//                      hexDumpToFile(fid_out[i],(unsigned char*)buff,sampleswritten*sizeof(ffado_sample_t));
                }

        }

        fprintf(stderr,"\n");

        fprintf(stderr,"Exiting receive loop\n");
        
        ffado_streaming_stop(dev);

        ffado_streaming_finish(dev);

        for (i=0;i<nb_out_channels;i++) {
                fclose(fid_out[i]);

        }
        for (i=0;i<nb_in_channels;i++) {
                fclose(fid_in[i]);
        }
        
        for (i=0;i<nb_in_channels;i++) {
                free(audiobuffer[i]);
        }
        free(nullbuffer);
        free(audiobuffer);

  return EXIT_SUCCESS;
}