/* snd_sun.c (description) Copyright (C) 1996-1997 Id Software, Inc. Copyright (C) 1999,2000 contributors of the QuakeForge project Please see the file "AUTHORS" for a list of contributors 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: Free Software Foundation, Inc. 59 Temple Place - Suite 330 Boston, MA 02111-1307, USA $Id$ */ #ifdef HAVE_CONFIG_H # include "config.h" #endif #ifdef HAVE_UNISTD_H # include #endif #include #include #include #include #include #include #include #include #include #include #include "QF/console.h" #include "QF/qtypes.h" #include "QF/qargs.h" #include "QF/sound.h" #include "QF/plugin.h" int audio_fd; int snd_inited; int snd_blocked = 0; static int wbufp; static audio_info_t info; #define BUFFER_SIZE 8192 unsigned char dma_buffer[BUFFER_SIZE]; unsigned char pend_buffer[BUFFER_SIZE]; int pending; volatile dma_t sn; plugin_t plugin_info; plugin_data_t plugin_info_data; plugin_funcs_t plugin_info_funcs; general_data_t plugin_info_general_data; general_funcs_t plugin_info_general_funcs; sound_data_t plugin_info_sound_data; sound_funcs_t plugin_info_sound_funcs; qboolean SNDDMA_Init (void) { if (snd_inited) { printf ("Sound already init'd\n"); return 0; } shm = &sn; shm->splitbuffer = 0; audio_fd = open ("/dev/audio", O_WRONLY | O_NDELAY); if (audio_fd < 0) { if (errno == EBUSY) { Con_Printf ("Audio device is being used by another process\n"); } perror ("/dev/audio"); Con_Printf ("Could not open /dev/audio\n"); return (0); } if (ioctl (audio_fd, AUDIO_GETINFO, &info) < 0) { perror ("/dev/audio"); Con_Printf ("Could not communicate with audio device.\n"); close (audio_fd); return 0; } // // set to nonblock // if (fcntl (audio_fd, F_SETFL, O_NONBLOCK) < 0) { perror ("/dev/audio"); close (audio_fd); return 0; } AUDIO_INITINFO (&info); shm->speed = 11025; // try 16 bit stereo info.play.encoding = AUDIO_ENCODING_LINEAR; info.play.sample_rate = 11025; info.play.channels = 2; info.play.precision = 16; if (ioctl (audio_fd, AUDIO_SETINFO, &info) < 0) { info.play.encoding = AUDIO_ENCODING_LINEAR; info.play.sample_rate = 11025; info.play.channels = 1; info.play.precision = 16; if (ioctl (audio_fd, AUDIO_SETINFO, &info) < 0) { Con_Printf ("Incapable sound hardware.\n"); close (audio_fd); return 0; } Con_Printf ("16 bit mono sound initialized\n"); shm->samplebits = 16; shm->channels = 1; } else { // 16 bit stereo Con_Printf ("16 bit stereo sound initialized\n"); shm->samplebits = 16; shm->channels = 2; } shm->soundalive = true; shm->samples = sizeof (dma_buffer) / (shm->samplebits / 8); shm->samplepos = 0; shm->submission_chunk = 1; shm->buffer = (unsigned char *) dma_buffer; snd_inited = 1; return 1; } int SNDDMA_GetDMAPos (void) { if (!snd_inited) return (0); if (ioctl (audio_fd, AUDIO_GETINFO, &info) < 0) { perror ("/dev/audio"); Con_Printf ("Could not communicate with audio device.\n"); close (audio_fd); snd_inited = 0; return (0); } return ((info.play.samples * shm->channels) % shm->samples); } int SNDDMA_GetSamples (void) { if (!snd_inited) return (0); if (ioctl (audio_fd, AUDIO_GETINFO, &info) < 0) { perror ("/dev/audio"); Con_Printf ("Could not communicate with audio device.\n"); close (audio_fd); snd_inited = 0; return (0); } return info.play.samples; } void SNDDMA_Shutdown (void) { if (snd_inited) { close (audio_fd); snd_inited = 0; } } /* SNDDMA_Submit Send sound to device if buffer isn't really the dma buffer */ void SNDDMA_Submit (void) { int bsize; int bytes, b; static unsigned char writebuf[1024]; unsigned char *p; int idx; int stop = *plugin_info_snd_output_data.paintedtime; if (snd_blocked) return; if (*plugin_info_snd_output_data.paintedtime < wbufp) wbufp = 0; // reset bsize = shm->channels * (shm->samplebits / 8); bytes = (*plugin_info_snd_output_data.paintedtime - wbufp) * bsize; if (!bytes) return; if (bytes > sizeof (writebuf)) { bytes = sizeof (writebuf); stop = wbufp + bytes / bsize; } p = writebuf; idx = (wbufp * bsize) & (BUFFER_SIZE - 1); for (b = bytes; b; b--) { *p++ = dma_buffer[idx]; idx = (idx + 1) & (BUFFER_SIZE - 1); } wbufp = stop; if (write (audio_fd, writebuf, bytes) < bytes) printf ("audio can't keep up!\n"); } void SNDDMA_BlockSound (void) { ++snd_blocked; } void SNDDMA_UnblockSound (void) { if (!snd_blocked) return; --snd_blocked; } plugin_t * PluginInfo (void) { plugin_info.type = qfp_sound; plugin_info.api_version = QFPLUGIN_VERSION; plugin_info.plugin_version = "0.1"; plugin_info.description = "SUN digital output"; plugin_info.copyright = "Copyright (C) 1996-1997 id Software, Inc.\n" "Copyright (C) 1999,2000,2001 contributors of the QuakeForge project\n" "Please see the file \"AUTHORS\" for a list of contributors"; plugin_info.functions = &plugin_info_funcs; plugin_info.data = &plugin_info_data; plugin_info_data.general = &plugin_info_general_data; plugin_info_data.input = NULL; plugin_info_data.sound = &plugin_info_sound_data; plugin_info_funcs.general = &plugin_info_general_funcs; plugin_info_funcs.input = NULL; plugin_info_funcs.sound = &plugin_info_sound_funcs; plugin_info_general_funcs.p_Init = SND_Init; plugin_info_general_funcs.p_Shutdown = SND_Shutdown; plugin_info_sound_funcs.pS_AmbientOff = SND_AmbientOff; plugin_info_sound_funcs.pS_AmbientOn = SND_AmbientOn; plugin_info_sound_funcs.pS_TouchSound = SND_TouchSound; plugin_info_sound_funcs.pS_ClearBuffer = SND_ClearBuffer; plugin_info_sound_funcs.pS_StaticSound = SND_StaticSound; plugin_info_sound_funcs.pS_StartSound = SND_StartSound; plugin_info_sound_funcs.pS_StopSound = SND_StopSound; plugin_info_sound_funcs.pS_PrecacheSound = SND_PrecacheSound; plugin_info_sound_funcs.pS_ClearPrecache = SND_ClearPrecache; plugin_info_sound_funcs.pS_Update = SND_Update; plugin_info_sound_funcs.pS_StopAllSounds = SND_StopAllSounds; plugin_info_sound_funcs.pS_BeginPrecaching = SND_BeginPrecaching; plugin_info_sound_funcs.pS_EndPrecaching = SND_EndPrecaching; plugin_info_sound_funcs.pS_ExtraUpdate = SND_ExtraUpdate; plugin_info_sound_funcs.pS_LocalSound = SND_LocalSound; plugin_info_sound_funcs.pS_BlockSound = SND_BlockSound; plugin_info_sound_funcs.pS_UnblockSound = SND_UnblockSound; return &plugin_info; }