+++ /dev/null
-/*
-Copyright (C) 1996-1997 Id Software, Inc.
-
-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 the Free Software
-Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-
-*/
-
-// OSS module, used by Linux and FreeBSD
-
-#include "quakedef.h"
-
-#include <errno.h>
-#include <fcntl.h>
-#include <sys/ioctl.h>
-#include <sys/soundcard.h>
-#include <unistd.h>
-
-#include "snd_main.h"
-
-
-#define NB_FRAGMENTS 4
-
-static int audio_fd = -1;
-static int old_osstime = 0;
-static unsigned int osssoundtime;
-
-
-/*
-====================
-SndSys_Init
-
-Create "snd_renderbuffer" with the proper sound format if the call is successful
-May return a suggested format if the requested format isn't available
-====================
-*/
-qbool SndSys_Init (const snd_format_t* requested, snd_format_t* suggested)
-{
- int flags, ioctl_param, prev_value;
- unsigned int fragmentsize;
-
- Con_DPrint("SndSys_Init: using the OSS module\n");
-
- // Check the requested sound format
- if (requested->width < 1 || requested->width > 2)
- {
- Con_Printf("SndSys_Init: invalid sound width (%hu)\n",
- requested->width);
-
- if (suggested != NULL)
- {
- memcpy(suggested, requested, sizeof(*suggested));
-
- if (requested->width < 1)
- suggested->width = 1;
- else
- suggested->width = 2;
- }
-
- return false;
- }
-
- // Open /dev/dsp
- audio_fd = open("/dev/dsp", O_WRONLY);
- if (audio_fd < 0)
- {
- perror("/dev/dsp");
- Con_Print("SndSys_Init: could not open /dev/dsp\n");
- return false;
- }
-
- // Use non-blocking IOs if possible
- flags = fcntl(audio_fd, F_GETFL);
- if (flags != -1)
- {
- if (fcntl(audio_fd, F_SETFL, flags | O_NONBLOCK) == -1)
- Con_Print("SndSys_Init : fcntl(F_SETFL, O_NONBLOCK) failed!\n");
- }
- else
- Con_Print("SndSys_Init: fcntl(F_GETFL) failed!\n");
-
- // Set the fragment size (up to "NB_FRAGMENTS" fragments of "fragmentsize" bytes)
- fragmentsize = requested->speed * requested->channels * requested->width / 10;
- fragmentsize = (unsigned int)ceilf((float)fragmentsize / (float)NB_FRAGMENTS);
- fragmentsize = CeilPowerOf2(fragmentsize);
- ioctl_param = (NB_FRAGMENTS << 16) | log2i(fragmentsize);
- if (ioctl(audio_fd, SNDCTL_DSP_SETFRAGMENT, &ioctl_param) == -1)
- {
- Con_Print ("SndSys_Init: could not set the fragment size\n");
- SndSys_Shutdown ();
- return false;
- }
- Con_Printf ("SndSys_Init: using %u fragments of %u bytes\n",
- ioctl_param >> 16, 1 << (ioctl_param & 0xFFFF));
-
- // Set the sound width
- if (requested->width == 1)
- ioctl_param = AFMT_U8;
- else
- ioctl_param = AFMT_S16_NE;
- prev_value = ioctl_param;
- if (ioctl(audio_fd, SNDCTL_DSP_SETFMT, &ioctl_param) == -1 ||
- ioctl_param != prev_value)
- {
- if (ioctl_param != prev_value && suggested != NULL)
- {
- memcpy(suggested, requested, sizeof(*suggested));
-
- if (ioctl_param == AFMT_S16_NE)
- suggested->width = 2;
- else
- suggested->width = 1;
- }
-
- Con_Printf("SndSys_Init: could not set the sound width to %hu\n",
- requested->width);
- SndSys_Shutdown();
- return false;
- }
-
- // Set the sound channels
- ioctl_param = requested->channels;
- if (ioctl(audio_fd, SNDCTL_DSP_CHANNELS, &ioctl_param) == -1 ||
- ioctl_param != requested->channels)
- {
- if (ioctl_param != requested->channels && suggested != NULL)
- {
- memcpy(suggested, requested, sizeof(*suggested));
- suggested->channels = ioctl_param;
- }
-
- Con_Printf("SndSys_Init: could not set the number of channels to %hu\n",
- requested->channels);
- SndSys_Shutdown();
- return false;
- }
-
- // Set the sound speed
- ioctl_param = requested->speed;
- if (ioctl(audio_fd, SNDCTL_DSP_SPEED, &ioctl_param) == -1 ||
- (unsigned int)ioctl_param != requested->speed)
- {
- if ((unsigned int)ioctl_param != requested->speed && suggested != NULL)
- {
- memcpy(suggested, requested, sizeof(*suggested));
- suggested->speed = ioctl_param;
- }
-
- Con_Printf("SndSys_Init: could not set the sound speed to %u\n",
- requested->speed);
- SndSys_Shutdown();
- return false;
- }
-
- // TOCHECK: I'm not sure which channel layout OSS uses for 5.1 and 7.1
- if (snd_channellayout.integer == SND_CHANNELLAYOUT_AUTO)
- Cvar_SetValueQuick (&snd_channellayout, SND_CHANNELLAYOUT_ALSA);
-
- old_osstime = 0;
- osssoundtime = 0;
- snd_renderbuffer = Snd_CreateRingBuffer(requested, 0, NULL);
- return true;
-}
-
-
-/*
-====================
-SndSys_Shutdown
-
-Stop the sound card, delete "snd_renderbuffer" and free its other resources
-====================
-*/
-void SndSys_Shutdown (void)
-{
- // Stop the sound and close the device
- if (audio_fd >= 0)
- {
- ioctl(audio_fd, SNDCTL_DSP_RESET, NULL);
- close(audio_fd);
- audio_fd = -1;
- }
-
- if (snd_renderbuffer != NULL)
- {
- Mem_Free(snd_renderbuffer->ring);
- Mem_Free(snd_renderbuffer);
- snd_renderbuffer = NULL;
- }
-}
-
-
-/*
-====================
-SndSys_Write
-====================
-*/
-static int SndSys_Write (const unsigned char* buffer, unsigned int nb_bytes)
-{
- int written;
- unsigned int factor;
-
- written = write (audio_fd, buffer, nb_bytes);
- if (written < 0)
- {
- if (errno != EAGAIN)
- Con_Printf ("SndSys_Write: audio write returned %d! (errno= %d)\n",
- written, errno);
- return written;
- }
-
- factor = snd_renderbuffer->format.width * snd_renderbuffer->format.channels;
- if (written % factor != 0)
- Sys_Error ("SndSys_Write: nb of bytes written (%d) isn't aligned to a frame sample!\n",
- written);
-
- snd_renderbuffer->startframe += written / factor;
-
- if ((unsigned int)written < nb_bytes)
- {
- Con_DPrintf("SndSys_Submit: audio can't keep up! (%u < %u)\n",
- written, nb_bytes);
- }
-
- return written;
-}
-
-
-/*
-====================
-SndSys_Submit
-
-Submit the contents of "snd_renderbuffer" to the sound card
-====================
-*/
-void SndSys_Submit (void)
-{
- unsigned int startoffset, factor, limit, nbframes;
- int written;
-
- if (audio_fd < 0 ||
- snd_renderbuffer->startframe == snd_renderbuffer->endframe)
- return;
-
- startoffset = snd_renderbuffer->startframe % snd_renderbuffer->maxframes;
- factor = snd_renderbuffer->format.width * snd_renderbuffer->format.channels;
- limit = snd_renderbuffer->maxframes - startoffset;
- nbframes = snd_renderbuffer->endframe - snd_renderbuffer->startframe;
- if (nbframes > limit)
- {
- written = SndSys_Write (&snd_renderbuffer->ring[startoffset * factor], limit * factor);
- if (written < 0 || (unsigned int)written < limit * factor)
- return;
-
- nbframes -= limit;
- startoffset = 0;
- }
-
- SndSys_Write (&snd_renderbuffer->ring[startoffset * factor], nbframes * factor);
-}
-
-
-/*
-====================
-SndSys_GetSoundTime
-
-Returns the number of sample frames consumed since the sound started
-====================
-*/
-unsigned int SndSys_GetSoundTime (void)
-{
- struct count_info count;
- int new_osstime;
- unsigned int timediff;
-
- if (ioctl (audio_fd, SNDCTL_DSP_GETOPTR, &count) == -1)
- {
- Con_Print ("SndSys_GetSoundTimeDiff: can't ioctl (SNDCTL_DSP_GETOPTR)\n");
- return 0;
- }
- new_osstime = count.bytes / (snd_renderbuffer->format.width * snd_renderbuffer->format.channels);
-
- if (new_osstime >= old_osstime)
- timediff = new_osstime - old_osstime;
- else
- {
- Con_Print ("SndSys_GetSoundTime: osstime wrapped\n");
- timediff = 0;
- }
-
- old_osstime = new_osstime;
- osssoundtime += timediff;
- return osssoundtime;
-}
-
-
-/*
-====================
-SndSys_LockRenderBuffer
-
-Get the exclusive lock on "snd_renderbuffer"
-====================
-*/
-qbool SndSys_LockRenderBuffer (void)
-{
- // Nothing to do
- return true;
-}
-
-
-/*
-====================
-SndSys_UnlockRenderBuffer
-
-Release the exclusive lock on "snd_renderbuffer"
-====================
-*/
-void SndSys_UnlockRenderBuffer (void)
-{
- // Nothing to do
-}
-
-/*
-====================
-SndSys_SendKeyEvents
-
-Send keyboard events originating from the sound system (e.g. MIDI)
-====================
-*/
-void SndSys_SendKeyEvents(void)
-{
- // not supported
-}
projects / xonotic / darkplaces.git / commitdiff