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/*************************************************************************** |
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Copyright (C) 2005 by Pieter Palmers * |
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* |
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This program is free software; you can redistribute it and/or modify * |
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it under the terms of the GNU General Public License as published by * |
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the Free Software Foundation; either version 2 of the License, or * |
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(at your option) any later version. * |
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* |
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This program is distributed in the hope that it will be useful, * |
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but WITHOUT ANY WARRANTY; without even the implied warranty of * |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
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GNU General Public License for more details. * |
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* |
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You should have received a copy of the GNU General Public License * |
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along with this program; if not, write to the * |
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Free Software Foundation, Inc., * |
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59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * |
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***************************************************************************/ |
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/** |
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* Test application for the direct decode stream API |
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* for floating point use |
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*/ |
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#ifdef HAVE_CONFIG_H |
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#include <config.h> |
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#endif |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include <signal.h> |
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#include <libiec61883/iec61883.h> |
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#include <stdio.h> |
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#include <sys/select.h> |
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#include <signal.h> |
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#include <string.h> |
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#include <stdlib.h> |
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#include <alsa/asoundlib.h> |
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#include "libfreebob/freebob_streaming.h" |
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#include "debugtools.h" |
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#define IEC61883_AM824_LABEL_MIDI_NO_DATA 0x80 |
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#define IEC61883_AM824_LABEL_MIDI_1X 0x81 |
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#define IEC61883_AM824_LABEL_MIDI_2X 0x82 |
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#define IEC61883_AM824_LABEL_MIDI_3X 0x83 |
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|
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#define ALSA_SEQ_BUFF_SIZE 1024 |
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#define MAX_MIDI_PORTS 20 |
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#define MIDI_TRANSMIT_BUFFER_SIZE 1024 |
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int run; |
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static void sighandler (int sig) |
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{ |
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run = 0; |
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} |
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typedef struct { |
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int seq_port_nr; |
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snd_midi_event_t *parser; |
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snd_seq_t *seq_handle; |
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} freebob_midi_port_t; |
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|
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typedef struct { |
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snd_seq_t *seq_handle; |
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int nb_seq_ports; |
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freebob_midi_port_t *ports[MAX_MIDI_PORTS]; |
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} freebob_midi_ports_t; |
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int open_seq(snd_seq_t **seq_handle, int in_ports[], int out_ports[], int num_in, int num_out); |
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/* Open ALSA sequencer with num_in writeable ports and num_out readable ports. */ |
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/* The sequencer handle and the port IDs are returned. */ |
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int open_seq(snd_seq_t **seq_handle, int in_ports[], int out_ports[], int num_in, int num_out) { |
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int l1; |
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char portname[64]; |
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if (snd_seq_open(seq_handle, "default", SND_SEQ_OPEN_DUPLEX, SND_SEQ_NONBLOCK) < 0) { |
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fprintf(stderr, "Error opening ALSA sequencer.\n"); |
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return(-1); |
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} |
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snd_seq_set_client_name(*seq_handle, "FreeBoB MIDI I/O test"); |
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for (l1 = 0; l1 < num_in; l1++) { |
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sprintf(portname, "MIDI OUT %d", l1); |
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if ((in_ports[l1] = snd_seq_create_simple_port(*seq_handle, portname, |
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SND_SEQ_PORT_CAP_WRITE|SND_SEQ_PORT_CAP_SUBS_WRITE, |
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SND_SEQ_PORT_TYPE_MIDI_GENERIC)) < 0) { |
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fprintf(stderr, "Error creating sequencer port.\n"); |
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return(-1); |
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} |
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} |
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for (l1 = 0; l1 < num_out; l1++) { |
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sprintf(portname, "MIDI IN %d", l1); |
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if ((out_ports[l1] = snd_seq_create_simple_port(*seq_handle, portname, |
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SND_SEQ_PORT_CAP_READ|SND_SEQ_PORT_CAP_SUBS_READ, |
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SND_SEQ_PORT_TYPE_MIDI_GENERIC)) < 0) { |
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fprintf(stderr, "Error creating sequencer port.\n"); |
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return(-1); |
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} |
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} |
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return(0); |
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} |
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void decode_midi_byte (freebob_midi_port_t *port, int byte) { |
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snd_seq_event_t ev; |
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if ((snd_midi_event_encode_byte(port->parser,byte, &ev)) > 0) { |
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// printf("message ok, sending it to %d\n", port->seq_port_nr); |
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// a midi message is complete, send it out to ALSA |
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snd_seq_ev_set_subs(&ev); |
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snd_seq_ev_set_direct(&ev); |
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snd_seq_ev_set_source(&ev, port->seq_port_nr); |
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snd_seq_event_output_direct(port->seq_handle, &ev); |
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} else { |
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} |
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} |
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int encode_midi_bytes(freebob_midi_port_t *port, unsigned char *byte_buff, int len) { |
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return 0; |
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} |
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int main(int argc, char *argv[]) |
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{ |
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#define PERIOD_SIZE 512 |
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int samplesread=0, sampleswritten=0; |
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int nb_in_channels=0, nb_out_channels=0; |
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int retval=0; |
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int i=0; |
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int nb_periods=0; |
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freebob_sample_t **audiobuffers_in; |
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freebob_sample_t **audiobuffers_out; |
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freebob_sample_t *nullbuffer; |
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run=1; |
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printf("Freebob MIDI streaming test application (1)\n"); |
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signal (SIGINT, sighandler); |
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signal (SIGPIPE, sighandler); |
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freebob_device_info_t device_info; |
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freebob_options_t dev_options; |
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dev_options.sample_rate=-1; // -1 = detect from discovery |
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dev_options.period_size=PERIOD_SIZE; |
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dev_options.nb_buffers=3; |
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dev_options.port=1; |
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dev_options.node_id=-1; |
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dev_options.realtime=0; |
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dev_options.packetizer_priority=60; |
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freebob_device_t *dev=freebob_streaming_init(&device_info, dev_options); |
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if (!dev) { |
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fprintf(stderr,"Could not init Freebob Streaming layer\n"); |
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exit(-1); |
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} |
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nb_in_channels=freebob_streaming_get_nb_capture_streams(dev); |
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nb_out_channels=freebob_streaming_get_nb_playback_streams(dev); |
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int midi_in_nbchannels=0; |
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int midi_out_nbchannels=0; |
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/* allocate intermediate buffers */ |
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audiobuffers_in=calloc(nb_in_channels,sizeof(freebob_sample_t *)); |
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audiobuffers_out=calloc(nb_in_channels,sizeof(freebob_sample_t)); |
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for (i=0;i<nb_in_channels;i++) { |
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audiobuffers_in[i]=calloc(PERIOD_SIZE+1,sizeof(freebob_sample_t)); |
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audiobuffers_out[i]=calloc(PERIOD_SIZE+1,sizeof(freebob_sample_t)); |
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switch (freebob_streaming_get_capture_stream_type(dev,i)) { |
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case freebob_stream_type_audio: |
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/* assign the audiobuffer to the stream */ |
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freebob_streaming_set_capture_stream_buffer(dev, i, (char *)(audiobuffers_in[i]), freebob_buffer_type_float); |
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break; |
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// this is done with read/write routines because the nb of bytes can differ. |
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case freebob_stream_type_midi: |
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midi_in_nbchannels++; |
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default: |
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break; |
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} |
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} |
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nullbuffer=calloc(PERIOD_SIZE+1,sizeof(freebob_sample_t)); |
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for (i=0;i<nb_out_channels;i++) { |
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switch (freebob_streaming_get_capture_stream_type(dev,i)) { |
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case freebob_stream_type_audio: |
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if (i<nb_in_channels) { |
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/* assign the audiobuffer to the stream */ |
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freebob_streaming_set_playback_stream_buffer(dev, i, (char *)audiobuffers_in[i], freebob_buffer_type_float); |
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} else { |
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freebob_streaming_set_playback_stream_buffer(dev, i, (char *)nullbuffer, freebob_buffer_type_uint24); |
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} |
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break; |
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// this is done with read/write routines because the nb of bytes can differ. |
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case freebob_stream_type_midi: |
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midi_out_nbchannels++; |
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default: |
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break; |
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} |
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} |
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/* open the files to write to*/ |
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FILE* fid_out[nb_out_channels]; |
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FILE* fid_in[nb_in_channels]; |
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char name[256]; |
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for (i=0;i<nb_out_channels;i++) { |
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snprintf(name,sizeof(name),"out_ch_%02d",i); |
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fid_out[i]=fopen(name,"w"); |
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freebob_streaming_get_playback_stream_name(dev,i,name,sizeof(name)); |
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fprintf(fid_out[i],"Channel name: %s\n",name); |
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switch (freebob_streaming_get_playback_stream_type(dev,i)) { |
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case freebob_stream_type_audio: |
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fprintf(fid_out[i],"Channel type: audio\n"); |
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break; |
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case freebob_stream_type_midi: |
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fprintf(fid_out[i],"Channel type: midi\n"); |
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break; |
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case freebob_stream_type_unknown: |
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fprintf(fid_out[i],"Channel type: unknown\n"); |
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break; |
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default: |
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case freebob_stream_type_invalid: |
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fprintf(fid_out[i],"Channel type: invalid\n"); |
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break; |
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} |
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} |
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for (i=0;i<nb_in_channels;i++) { |
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snprintf(name,sizeof(name),"in_ch_%02d",i); |
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fid_in[i]=fopen(name,"w"); |
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freebob_streaming_get_capture_stream_name(dev,i,name,sizeof(name)); |
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fprintf(fid_in[i], "Channel name: %s\n"); |
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switch (freebob_streaming_get_capture_stream_type(dev,i)) { |
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case freebob_stream_type_audio: |
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fprintf(fid_in[i], "Channel type: audio\n"); |
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break; |
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case freebob_stream_type_midi: |
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fprintf(fid_in[i], "Channel type: midi\n"); |
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break; |
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case freebob_stream_type_unknown: |
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fprintf(fid_in[i],"Channel type: unknown\n"); |
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break; |
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default: |
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case freebob_stream_type_invalid: |
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fprintf(fid_in[i],"Channel type: invalid\n"); |
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break; |
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} |
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} |
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// setup the ALSA midi seq clients |
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snd_seq_t *seq_handle; |
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int in_ports[midi_in_nbchannels], out_ports[midi_out_nbchannels]; |
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// open sequencer |
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// the number of midi ports is statically set to 2 |
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if (open_seq(&seq_handle, in_ports, out_ports, midi_in_nbchannels, midi_out_nbchannels) < 0) { |
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fprintf(stderr, "ALSA Error.\n"); |
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exit(1); |
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} |
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freebob_midi_port_t* midi_out_portmap[nb_out_channels]; |
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freebob_midi_port_t* midi_in_portmap[nb_in_channels]; |
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int cnt=0; |
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for (i=0;i<nb_out_channels;i++) { |
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freebob_midi_port_t *midi_out_port; |
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switch (freebob_streaming_get_playback_stream_type(dev,i)) { |
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case freebob_stream_type_audio: |
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midi_out_portmap[i]=NULL; |
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break; |
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case freebob_stream_type_midi: |
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midi_out_port=malloc(sizeof(freebob_midi_port_t)); |
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if(!midi_out_port) { |
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fprintf(stderr, "Could not allocate memory for MIDI OUT port %d\n",i); |
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exit(1); // this could be/is a memory leak, I know... |
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} else { |
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midi_out_port->seq_port_nr=in_ports[cnt++]; |
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midi_out_port->seq_handle=seq_handle; |
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if (snd_midi_event_new ( ALSA_SEQ_BUFF_SIZE, &(midi_out_port->parser)) < 0) { |
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fprintf(stderr, "ALSA Error: could not init parser for MIDI OUT port %d\n",i); |
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exit(1); // this too |
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} |
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midi_out_portmap[i]=midi_out_port; |
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} |
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break; |
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} |
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} |
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|
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cnt=0; |
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for (i=0;i<nb_in_channels;i++) { |
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freebob_midi_port_t *midi_in_port; |
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switch (freebob_streaming_get_capture_stream_type(dev,i)) { |
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case freebob_stream_type_audio: |
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midi_in_portmap[i]=NULL; |
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break; |
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case freebob_stream_type_midi: |
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midi_in_port=malloc(sizeof(freebob_midi_port_t)); |
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if(!midi_in_port) { |
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fprintf(stderr, "Could not allocate memory for MIDI IN port %d\n",i); |
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exit(1); // this could be/is a memory leak, I know... |
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} else { |
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midi_in_port->seq_port_nr=out_ports[cnt++]; |
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midi_in_port->seq_handle=seq_handle; |
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|
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if (snd_midi_event_new ( ALSA_SEQ_BUFF_SIZE, &(midi_in_port->parser)) < 0) { |
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fprintf(stderr, "ALSA Error: could not init parser for MIDI IN port %d\n",i); |
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exit(1); // this too |
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} |
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midi_in_portmap[i]=midi_in_port; |
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} |
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break; |
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} |
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} |
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|
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// start the streaming layer |
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freebob_streaming_start(dev); |
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|
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fprintf(stderr,"Entering receive loop (%d,%d)\n",nb_in_channels,nb_out_channels); |
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while(run) { |
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retval = freebob_streaming_wait(dev); |
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345 |
if (retval < 0) { |
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fprintf(stderr,"Xrun\n"); |
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freebob_streaming_reset(dev); |
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continue; |
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} |
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350 |
|
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// freebob_streaming_transfer_buffers(dev); |
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352 |
freebob_streaming_transfer_capture_buffers(dev); |
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freebob_streaming_transfer_playback_buffers(dev); |
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|
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nb_periods++; |
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|
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357 |
if((nb_periods % 32)==0) { |
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// fprintf(stderr,"\r%05d periods",nb_periods); |
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} |
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360 |
|
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361 |
for(i=0;i<nb_in_channels;i++) { |
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int s; |
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363 |
|
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364 |
switch (freebob_streaming_get_capture_stream_type(dev,i)) { |
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365 |
case freebob_stream_type_audio: |
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366 |
// no need to get the buffers manually, we have set the API internal buffers to the audiobuffer[i]'s |
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367 |
// //samplesread=freebob_streaming_read(dev, i, audiobuffer[i], PERIOD_SIZE); |
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368 |
samplesread=PERIOD_SIZE; |
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369 |
break; |
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370 |
case freebob_stream_type_midi: |
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samplesread=freebob_streaming_read(dev, i, audiobuffers_in[i], PERIOD_SIZE); |
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372 |
quadlet_t *buff=(quadlet_t *)audiobuffers_in[i]; |
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373 |
for (s=0;s<samplesread;s++) { |
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374 |
quadlet_t *byte=(buff+s) ; |
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// printf("%08X ",*byte); |
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376 |
decode_midi_byte (midi_in_portmap[i], (*byte) & 0xFF); |
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377 |
} |
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378 |
if(samplesread>0) { |
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379 |
fprintf(fid_in[i], "---- Period read (%d samples) ----\n",samplesread); |
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380 |
hexDumpToFile(fid_in[i],(unsigned char*)audiobuffers_in[i],samplesread*sizeof(freebob_sample_t)); |
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381 |
} |
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382 |
break; |
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383 |
} |
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384 |
// fprintf(fid_in[i], "---- Period read (%d samples) ----\n",samplesread); |
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385 |
// hexDumpToFile(fid_in[i],(unsigned char*)buff,samplesread*sizeof(freebob_sample_t)); |
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386 |
|
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387 |
} |
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388 |
|
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389 |
for(i=0;i<nb_out_channels;i++) { |
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390 |
freebob_sample_t *buff; |
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391 |
int b=0; |
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392 |
unsigned char* byte_buff; |
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393 |
|
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394 |
if (i<nb_in_channels) { |
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395 |
buff=audiobuffers_out[i]; |
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396 |
} else { |
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397 |
buff=nullbuffer; |
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398 |
} |
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399 |
|
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400 |
switch (freebob_streaming_get_playback_stream_type(dev,i)) { |
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401 |
case freebob_stream_type_audio: |
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402 |
// sampleswritten=freebob_streaming_write(dev, i, buff, PERIOD_SIZE); |
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403 |
// sampleswritten=PERIOD_SIZE; |
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404 |
break; |
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405 |
case freebob_stream_type_midi: |
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406 |
|
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407 |
#define max_midi_bytes_to_write PERIOD_SIZE/8 |
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408 |
byte_buff=(unsigned char*)buff; |
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409 |
|
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410 |
sampleswritten=encode_midi_bytes(midi_out_portmap[i], byte_buff, max_midi_bytes_to_write); |
---|
411 |
|
---|
412 |
for(b=0;b<sampleswritten;b++) { |
---|
413 |
freebob_sample_t tmp_event=*(byte_buff+b); |
---|
414 |
freebob_streaming_write(dev, i, &tmp_event, 1); |
---|
415 |
} |
---|
416 |
|
---|
417 |
|
---|
418 |
fprintf(fid_out[i], "---- Period write (%d samples) ----\n",sampleswritten); |
---|
419 |
hexDumpToFile(fid_out[i],(unsigned char*)buff,sampleswritten*sizeof(freebob_sample_t)); |
---|
420 |
break; |
---|
421 |
} |
---|
422 |
} |
---|
423 |
|
---|
424 |
} |
---|
425 |
|
---|
426 |
fprintf(stderr,"\n"); |
---|
427 |
|
---|
428 |
fprintf(stderr,"Exiting receive loop\n"); |
---|
429 |
|
---|
430 |
freebob_streaming_stop(dev); |
---|
431 |
|
---|
432 |
freebob_streaming_finish(dev); |
---|
433 |
|
---|
434 |
for (i=0;i<nb_out_channels;i++) { |
---|
435 |
fclose(fid_out[i]); |
---|
436 |
|
---|
437 |
} |
---|
438 |
for (i=0;i<nb_in_channels;i++) { |
---|
439 |
fclose(fid_in[i]); |
---|
440 |
} |
---|
441 |
|
---|
442 |
for (i=0;i<nb_in_channels;i++) { |
---|
443 |
free(audiobuffers_in[i]); |
---|
444 |
free(audiobuffers_out[i]); |
---|
445 |
} |
---|
446 |
free(nullbuffer); |
---|
447 |
free(audiobuffers_in); |
---|
448 |
free(audiobuffers_out); |
---|
449 |
|
---|
450 |
// free the MIDI to seq parsers and port structures |
---|
451 |
for(i=0;i<midi_in_nbchannels;i++) { |
---|
452 |
freebob_midi_port_t *midi_in_port=midi_in_portmap[i]; |
---|
453 |
|
---|
454 |
if(midi_in_port) { |
---|
455 |
snd_midi_event_free ( midi_in_port->parser ); |
---|
456 |
free(midi_in_port); |
---|
457 |
} |
---|
458 |
} |
---|
459 |
// free the MIDI to seq parsers and port structures |
---|
460 |
for(i=0;i<midi_out_nbchannels;i++) { |
---|
461 |
freebob_midi_port_t *midi_out_port=midi_out_portmap[i]; |
---|
462 |
|
---|
463 |
if(midi_out_port) { |
---|
464 |
snd_midi_event_free ( midi_out_port->parser ); |
---|
465 |
free(midi_out_port); |
---|
466 |
} |
---|
467 |
} |
---|
468 |
|
---|
469 |
return EXIT_SUCCESS; |
---|
470 |
} |
---|