#include "snd_main.h"
-#define NB_PERIODS 2
+#define NB_PERIODS 4
static snd_pcm_t* pcm_handle = NULL;
static snd_pcm_sframes_t expected_delay = 0;
static unsigned int alsasoundtime;
+static snd_seq_t* seq_handle = NULL;
/*
====================
*/
qboolean SndSys_Init (const snd_format_t* requested, snd_format_t* suggested)
{
- const char* pcm_name;
- int i, err;
+ const char* pcm_name, *seq_name;
+ int i, err, seq_client, seq_port;
snd_pcm_hw_params_t* hw_params = NULL;
snd_pcm_format_t snd_pcm_format;
snd_pcm_uframes_t buffer_size;
Con_Print ("SndSys_Init: using the ALSA module\n");
+ seq_name = NULL;
+// COMMANDLINEOPTION: Linux ALSA Sound: -sndseqin <client>:<port> selects which sequencer port to use for input, by default no sequencer port is used (MIDI note events from that port get mapped to MIDINOTE<n> keys that can be bound)
+ i = COM_CheckParm ("-sndseqin"); // TODO turn this into a cvar, maybe
+ if (i != 0 && i < com_argc - 1)
+ seq_name = com_argv[i + 1];
+ if(seq_name)
+ {
+ seq_client = atoi(seq_name);
+ seq_port = 0;
+ if(strchr(seq_name, ':'))
+ seq_port = atoi(strchr(seq_name, ':') + 1);
+ Con_Printf ("SndSys_Init: seq input port has been set to \"%d:%d\". Enabling sequencer input...\n", seq_client, seq_port);
+ err = snd_seq_open (&seq_handle, "default", SND_SEQ_OPEN_INPUT, 0);
+ if (err < 0)
+ {
+ Con_Print ("SndSys_Init: can't open seq device\n");
+ goto seqdone;
+ }
+ err = snd_seq_set_client_name(seq_handle, gamename);
+ if (err < 0)
+ {
+ Con_Print ("SndSys_Init: can't set name of seq device\n");
+ goto seqerror;
+ }
+ err = snd_seq_create_simple_port(seq_handle, gamename, SND_SEQ_PORT_CAP_WRITE | SND_SEQ_PORT_CAP_SUBS_WRITE, SND_SEQ_PORT_TYPE_MIDI_GENERIC | SND_SEQ_PORT_TYPE_APPLICATION);
+ if(err < 0)
+ {
+ Con_Print ("SndSys_Init: can't create seq port\n");
+ goto seqerror;
+ }
+ err = snd_seq_connect_from(seq_handle, 0, seq_client, seq_port);
+ if(err < 0)
+ {
+ Con_Printf ("SndSys_Init: can't connect to seq port \"%d:%d\"\n", seq_client, seq_port);
+ goto seqerror;
+ }
+ err = snd_seq_nonblock(seq_handle, 1);
+ if(err < 0)
+ {
+ Con_Print ("SndSys_Init: can't make seq nonblocking\n");
+ goto seqerror;
+ }
+
+ goto seqdone;
+
+seqerror:
+ snd_seq_close(seq_handle);
+ seq_handle = NULL;
+ }
+
+seqdone:
// Check the requested sound format
if (requested->width < 1 || requested->width > 2)
{
pcm_name = "default";
break;
}
-// COMMANDLINEOPTION: Linux ALSA Sound: -sndpcm <devicename> selects which pcm device to us, default is "default"
+// COMMANDLINEOPTION: Linux ALSA Sound: -sndpcm <devicename> selects which pcm device to use, default is "default"
i = COM_CheckParm ("-sndpcm");
if (i != 0 && i < com_argc - 1)
pcm_name = com_argv[i + 1];
goto init_error;
}
- buffer_size = requested->speed / 5;
+ // pick a buffer size that is a power of 2 (by masking off low bits)
+ buffer_size = i = (int)(requested->speed * 0.15f);
+ while (buffer_size & (buffer_size-1))
+ buffer_size &= (buffer_size-1);
+ // then check if it is the nearest power of 2 and bump it up if not
+ if (i - buffer_size >= buffer_size >> 1)
+ buffer_size *= 2;
+
err = snd_pcm_hw_params_set_buffer_size_near (pcm_handle, hw_params, &buffer_size);
if (err < 0)
{
goto init_error;
}
+ // pick a period size near the buffer_size we got from ALSA
+ snd_pcm_hw_params_get_buffer_size (hw_params, &buffer_size);
buffer_size /= NB_PERIODS;
err = snd_pcm_hw_params_set_period_size_near(pcm_handle, hw_params, &buffer_size, 0);
if (err < 0)
if (hw_params != NULL)
snd_pcm_hw_params_free (hw_params);
- SndSys_Shutdown ();
+
+ snd_pcm_close(pcm_handle);
+ pcm_handle = NULL;
+
return false;
}
*/
void SndSys_Shutdown (void)
{
+ if (seq_handle != NULL)
+ {
+ snd_seq_close(seq_handle);
+ seq_handle = NULL;
+ }
+
if (pcm_handle != NULL)
{
snd_pcm_close(pcm_handle);
written = snd_pcm_writei (pcm_handle, buffer, nbframes);
if (written < 0)
{
- if (developer.integer >= 1000 && vid_activewindow)
- Con_Printf ("SndSys_Write: audio write returned %ld (%s)!\n",
+ if (developer_insane.integer && vid_activewindow)
+ Con_DPrintf ("SndSys_Write: audio write returned %ld (%s)!\n",
written, snd_strerror (written));
if (SndSys_Recover (written))
err = snd_pcm_delay (pcm_handle, &delay);
if (err < 0)
{
- if (developer.integer >= 1000 && vid_activewindow)
+ if (developer_insane.integer && vid_activewindow)
Con_DPrintf ("SndSys_GetSoundTime: can't get playback delay (%s)\n",
snd_strerror (err));
{
// Nothing to do
}
+
+/*
+====================
+SndSys_SendKeyEvents
+
+Send keyboard events originating from the sound system (e.g. MIDI)
+====================
+*/
+void SndSys_SendKeyEvents(void)
+{
+ snd_seq_event_t *event;
+ if(!seq_handle)
+ return;
+ for(;;)
+ {
+ if(snd_seq_event_input(seq_handle, &event) <= 0)
+ break;
+ if(event)
+ {
+ switch(event->type)
+ {
+ case SND_SEQ_EVENT_NOTEON:
+ if(event->data.note.velocity)
+ {
+ Key_Event(K_MIDINOTE0 + event->data.note.note, 0, true);
+ break;
+ }
+ case SND_SEQ_EVENT_NOTEOFF:
+ Key_Event(K_MIDINOTE0 + event->data.note.note, 0, false);
+ break;
+ }
+ }
+ }
+}
projects / xonotic / darkplaces.git / blobdiff