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Commit ebef1e6a authored by claes's avatar claes
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Handling of long sounds improved

parent b02f9a1e
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Showing with 79 additions and 25 deletions
xtt/lib/xtt/src/xtt_audio.cpp
View file @ ebef1e6a
......@@ -16,8 +16,8 @@
#include "xtt_audio.h"
#define OSS_BUFFER_SIZE 65536
#define ALSA_BUFFER_SIZE 65536
#define AUDIO_BUFFER_SIZE 65536
#define ALSA_BUFFER_SIZE (65536 * 4)
#define AUDIO_BUFFER_SIZE (65536 * 4)
#define AUDIO_SAMPLE_RATE 44100
//using namespace std;
......@@ -128,6 +128,7 @@ int XttAudio::init(char *OSS_device, char * ALSA_device)
int XttAudio::beep( pwr_tAttrRef *arp)
{
int size;
int asize = 0;
short *buffer;
pwr_tTid tid;
pwr_tStatus sts;
......@@ -199,20 +200,20 @@ int XttAudio::beep( pwr_tAttrRef *arp)
if ( strncmp( sound.Source, "Sine", 4) == 0 ||
strncmp( sound.Source, "Square", 6) == 0) {
size = 2 * int(sound.Length * srate);
size = ((size - 1) / (AUDIO_BUFFER_SIZE/2) + 1) * AUDIO_BUFFER_SIZE/2;
asize = size = 2 * int(sound.Length * srate);
size = ((size - 1) / (hw_buff_size) + 1) * hw_buff_size;
buffer = (short *) calloc( sizeof(short), size);
if(!buffer) return XNAV__NOMEMORY;
for ( int i = 0; i < int(sizeof(sound.ToneTable)/sizeof(sound.ToneTable[0])); i++) {
if ( sound.VolumeTable[i] > 0) {
if ( strncmp( sound.Source, "Sine", 4) == 0) {
MakeSine( buffer, size, 0, 0, sound.Length, sound.BaseTone + sound.ToneTable[i],
MakeSine( buffer, asize, 0, 0, sound.Length, sound.BaseTone + sound.ToneTable[i],
sound.Volume/100 * sound.VolumeTable[i], sound.Volume/100 * sound.VolumeTable[i],
sound.Attack, sound.Decay, sound.Sustain/100, sound.Release, sound.Tremolo/100);
}
else if ( strncmp( sound.Source, "Square", 6) == 0) {
MakeSquare( buffer, size, 0, 0, sound.Length, sound.BaseTone + sound.ToneTable[i],
MakeSquare( buffer, asize, 0, 0, sound.Length, sound.BaseTone + sound.ToneTable[i],
sound.Volume/100 * sound.VolumeTable[i], sound.Volume/100 * sound.VolumeTable[i],
sound.Attack, sound.Decay, sound.Sustain/100, sound.Release, sound.Tremolo/100);
}
......@@ -254,7 +255,7 @@ int XttAudio::beep( pwr_tAttrRef *arp)
if ( chunk.wChannels == 1) {
size = chunk.dataSize * 2;
size = ((size - 1) / (AUDIO_BUFFER_SIZE/2) + 1) * AUDIO_BUFFER_SIZE/2;
size = ((size - 1) / (hw_buff_size) + 1) * hw_buff_size;
buffer = (short *) calloc( sizeof(short), size);
if ( !buffer) return XNAV__NOMEMORY;
......@@ -265,7 +266,7 @@ int XttAudio::beep( pwr_tAttrRef *arp)
else {
// wChannels == 2
size = chunk.dataSize;
size = ((size - 1) / (AUDIO_BUFFER_SIZE/2) + 1) * AUDIO_BUFFER_SIZE/2;
size = ((size - 1) / (hw_buff_size) + 1) * hw_buff_size;
buffer = (short *) calloc( sizeof(short), size);
if ( !buffer) return XNAV__NOMEMORY;
......@@ -286,7 +287,7 @@ int XttAudio::beep( pwr_tAttrRef *arp)
fclose(fp);
size = chunk.dataSize * 2;
size = ((size - 1) / (AUDIO_BUFFER_SIZE/2) + 1) * AUDIO_BUFFER_SIZE/2;
size = ((size - 1) / (hw_buff_size) + 1) * hw_buff_size;
buffer = (short *) calloc( sizeof(short), size);
if ( !buffer) return XNAV__NOMEMORY;
......@@ -298,7 +299,7 @@ int XttAudio::beep( pwr_tAttrRef *arp)
else {
// wChannels == 2
size = chunk.dataSize / 2;
size = ((size - 1) / (AUDIO_BUFFER_SIZE/2) + 1) * AUDIO_BUFFER_SIZE/2;
size = ((size - 1) / (hw_buff_size) + 1) * hw_buff_size;
buffer = (short *) calloc( sizeof(short), size);
if ( !buffer) return XNAV__NOMEMORY;
......@@ -331,7 +332,7 @@ int XttAudio::beep( pwr_tAttrRef *arp)
sound_cnt = j;
size = 2 * int(seq.Length * srate);
size = ((size - 1) / (AUDIO_BUFFER_SIZE/2) + 1) * AUDIO_BUFFER_SIZE/2;
size = ((size - 1) / (hw_buff_size) + 1) * hw_buff_size;
buffer = (short *) calloc( sizeof(short), size);
if(!buffer) return XNAV__NOMEMORY;
......@@ -400,7 +401,7 @@ int XttAudio::beep( pwr_tAttrRef *arp)
if ( EVEN(sts)) {
// Standard beep
size = 2 * int( 0.3 * srate);
size = ((size - 1) / (AUDIO_BUFFER_SIZE/2) + 1) * AUDIO_BUFFER_SIZE/2;
size = ((size - 1) / (hw_buff_size) + 1) * hw_buff_size;
buffer = (short *) calloc( sizeof(short), size);
if(!buffer) return XNAV__NOMEMORY;
......@@ -408,6 +409,7 @@ int XttAudio::beep( pwr_tAttrRef *arp)
}
write_buffer = buffer;
write_buffer_asize = asize;
write_buffer_size = size;
write_buffer_idx = 0;
audio_write( this);
......@@ -415,6 +417,13 @@ int XttAudio::beep( pwr_tAttrRef *arp)
return XNAV__SUCCESS;
}
void XttAudio::audio_stop( void *a)
{
XttAudio *audio = (XttAudio *)a;
snd_pcm_drop( audio->ALSA_handle);
}
void XttAudio::audio_write( void *data)
{
XttAudio *audio = (XttAudio *)data;
......@@ -453,27 +462,52 @@ void XttAudio::audio_write( void *data)
}
else if(ALSA_audio_ok) {
int size = audio->write_buffer_size - audio->write_buffer_idx;
if ( size > ALSA_BUFFER_SIZE/2)
size = ALSA_BUFFER_SIZE/2;
int size, asize;
printf( "Write idx: %d totsize: %d size: %d\n", audio->write_buffer_idx, audio->write_buffer_size, size);
asize = audio->write_buffer_asize;
if ( audio->write_buffer_asize && audio->write_buffer_asize < audio->write_buffer_size) {
snd_pcm_nonblock( audio->ALSA_handle, 1);
snd_pcm_drop( audio->ALSA_handle);
}
else {
snd_pcm_nonblock( audio->ALSA_handle, 0);
snd_pcm_drop( audio->ALSA_handle);
}
snd_pcm_prepare( audio->ALSA_handle);
// snd_pcm_start( audio->ALSA_handle);
for (;;) {
if ( audio->write_buffer_asize)
size = audio->write_buffer_asize - audio->write_buffer_idx;
else
size = audio->write_buffer_size - audio->write_buffer_idx;
if ( size > audio->hw_buff_size)
size = audio->hw_buff_size;
int time = 1000 * asize/2 / srate;
audio->timerid->add( time, audio_stop, audio);
rc = snd_pcm_writei( audio->ALSA_handle, &audio->write_buffer[audio->write_buffer_idx],
size/2);
printf( "Write idx: %d totsize: %d size: %d written: %d actsize: %d\n", audio->write_buffer_idx, audio->write_buffer_size, size, rc*2, asize);
if (rc == -EPIPE) {
// EPIPE means underrun
fprintf(stderr, "ALSA audio underrun occurred\n");
int time = 20;
audio->timerid->add( time, audio_write, audio);
// int time = 20;
// audio->timerid->add( time, audio_write, audio);
snd_pcm_close( audio->ALSA_handle);
free( audio->write_buffer);
audio->write_buffer = 0;
return;
// snd_pcm_prepare( audio->ALSA_handle);
}
else if (rc < 0) {
printf("ALSA audio error from writei:%s\n",snd_strerror(rc));
snd_pcm_close( audio->ALSA_handle);
//snd_pcm_close( audio->ALSA_handle);
free( audio->write_buffer);
audio->write_buffer = 0;
return;
......@@ -482,12 +516,14 @@ void XttAudio::audio_write( void *data)
fprintf(stderr,"ALSA audio short write, write %d frames\n", rc);
}
audio->write_buffer_idx += size;
if ( audio->write_buffer_idx < audio->write_buffer_size) {
if ( (audio->write_buffer_asize && audio->write_buffer_idx < audio->write_buffer_asize) ||
(!audio->write_buffer_asize && audio->write_buffer_idx < audio->write_buffer_size)) {
//if ( audio->write_buffer_idx < audio->write_buffer_size) {
// Submit next write
#if 0
int time = 1000 * size/2 / srate;
audio->timerid->add( time, audio_write, audio);
#endif
// int time = 1000 * size/2 / srate;
// audio->timerid->add( time, audio_write, audio);
}
else {
// Free buffer
......@@ -570,6 +606,21 @@ int XttAudio::Init_ALSA(char *device, unsigned int samplerate)
snd_pcm_close(ALSA_handle);
return -1;
}
int msize;
err = snd_pcm_hw_params_get_buffer_size_min(hw_params, (snd_pcm_uframes_t *)&msize);
if ( err >= 0) {
hw_buff_size = 4 * msize;
// hw_buff_size = 65536 / 2;
printf( "Buffer size min: %d\n", msize * 2);
if((err = snd_pcm_hw_params_set_buffer_size_near(ALSA_handle, hw_params, (snd_pcm_uframes_t *)&msize)) <0) {
fprintf(stderr, "could not set buffer size (%s)\n",snd_strerror (err));
}
}
err = snd_pcm_hw_params_get_buffer_size_max(hw_params, (snd_pcm_uframes_t *)&msize);
printf( "Buffer size max: %d\n", msize * 2);
if ((err = snd_pcm_hw_params (ALSA_handle, hw_params)) < 0)
{
fprintf (stderr, "cannot set parameters (%s)\n",snd_strerror (err));
......
xtt/lib/xtt/src/xtt_audio.h
View file @ ebef1e6a
/*
* Proview $Id: xtt_audio.h,v 1.4 2007-01-04 08:22:46 claes Exp $
* Proview $Id: xtt_audio.h,v 1.5 2008-10-28 10:08:18 claes Exp $
* Copyright (C) 2005 SSAB Oxelsund AB.
*
* This program is free software; you can redistribute it and/or
......@@ -64,7 +64,9 @@ class XttAudio
static CoWow *wow;
double freq[100];
short *write_buffer;
int hw_buff_size;
int write_buffer_size;
int write_buffer_asize;
int write_buffer_idx;
CoWowTimer *timerid;
pwr_tAttrRef queue[AUDIO_QUESIZE];
......@@ -82,6 +84,7 @@ class XttAudio
int tone, double volume_ch1, double volume_ch2, double attack, double decay,
double sustain, double release, double tremolo);
static void audio_write( void *data);
static void audio_stop( void *data);
};
#endif
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