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Diffstat (limited to 'distrib/sdl-1.2.12/src/audio/bsd/SDL_bsdaudio.c')
-rw-r--r--distrib/sdl-1.2.12/src/audio/bsd/SDL_bsdaudio.c404
1 files changed, 0 insertions, 404 deletions
diff --git a/distrib/sdl-1.2.12/src/audio/bsd/SDL_bsdaudio.c b/distrib/sdl-1.2.12/src/audio/bsd/SDL_bsdaudio.c
deleted file mode 100644
index f1946c0..0000000
--- a/distrib/sdl-1.2.12/src/audio/bsd/SDL_bsdaudio.c
+++ /dev/null
@@ -1,404 +0,0 @@
-/*
- SDL - Simple DirectMedia Layer
- Copyright (C) 1997-2004 Sam Lantinga
-
- This library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public
- License as published by the Free Software Foundation; either
- version 2 of the License, or (at your option) any later version.
-
- This library 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
- Library General Public License for more details.
-
- You should have received a copy of the GNU Library General Public
- License along with this library; if not, write to the Free
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-
- Sam Lantinga
- slouken@libsdl.org
-*/
-#include "SDL_config.h"
-
-/*
- * Driver for native OpenBSD/NetBSD audio(4).
- * vedge@vedge.com.ar.
- */
-
-#include <errno.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <sys/time.h>
-#include <sys/ioctl.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <sys/audioio.h>
-
-#include "SDL_timer.h"
-#include "SDL_audio.h"
-#include "../SDL_audiomem.h"
-#include "../SDL_audio_c.h"
-#include "../SDL_audiodev_c.h"
-#include "SDL_bsdaudio.h"
-
-/* The tag name used by NetBSD/OpenBSD audio */
-#ifdef __NetBSD__
-#define BSD_AUDIO_DRIVER_NAME "netbsd"
-#define BSD_AUDIO_DRIVER_DESC "Native NetBSD audio"
-#else
-#define BSD_AUDIO_DRIVER_NAME "openbsd"
-#define BSD_AUDIO_DRIVER_DESC "Native OpenBSD audio"
-#endif
-
-/* Open the audio device for playback, and don't block if busy */
-/* #define USE_BLOCKING_WRITES */
-
-/* Use timer for synchronization */
-/* #define USE_TIMER_SYNC */
-
-/* #define DEBUG_AUDIO */
-/* #define DEBUG_AUDIO_STREAM */
-
-#ifdef USE_BLOCKING_WRITES
-#define OPEN_FLAGS O_WRONLY
-#else
-#define OPEN_FLAGS (O_WRONLY|O_NONBLOCK)
-#endif
-
-/* Audio driver functions */
-static void OBSD_WaitAudio(_THIS);
-static int OBSD_OpenAudio(_THIS, SDL_AudioSpec *spec);
-static void OBSD_PlayAudio(_THIS);
-static Uint8 *OBSD_GetAudioBuf(_THIS);
-static void OBSD_CloseAudio(_THIS);
-
-#ifdef DEBUG_AUDIO
-static void OBSD_Status(_THIS);
-#endif
-
-/* Audio driver bootstrap functions */
-
-static int
-Audio_Available(void)
-{
- int fd;
- int available;
-
- available = 0;
- fd = SDL_OpenAudioPath(NULL, 0, OPEN_FLAGS, 0);
- if(fd >= 0) {
- available = 1;
- close(fd);
- }
- return(available);
-}
-
-static void
-Audio_DeleteDevice(SDL_AudioDevice *device)
-{
- SDL_free(device->hidden);
- SDL_free(device);
-}
-
-static SDL_AudioDevice
-*Audio_CreateDevice(int devindex)
-{
- SDL_AudioDevice *this;
-
- /* Initialize all variables that we clean on shutdown */
- this = (SDL_AudioDevice*)SDL_malloc(sizeof(SDL_AudioDevice));
- if(this) {
- SDL_memset(this, 0, (sizeof *this));
- this->hidden =
- (struct SDL_PrivateAudioData*)SDL_malloc((sizeof *this->hidden));
- }
- if((this == NULL) || (this->hidden == NULL)) {
- SDL_OutOfMemory();
- if(this) SDL_free(this);
- return(0);
- }
- SDL_memset(this->hidden, 0, (sizeof *this->hidden));
- audio_fd = -1;
-
- /* Set the function pointers */
- this->OpenAudio = OBSD_OpenAudio;
- this->WaitAudio = OBSD_WaitAudio;
- this->PlayAudio = OBSD_PlayAudio;
- this->GetAudioBuf = OBSD_GetAudioBuf;
- this->CloseAudio = OBSD_CloseAudio;
-
- this->free = Audio_DeleteDevice;
-
- return this;
-}
-
-AudioBootStrap BSD_AUDIO_bootstrap = {
- BSD_AUDIO_DRIVER_NAME, BSD_AUDIO_DRIVER_DESC,
- Audio_Available, Audio_CreateDevice
-};
-
-/* This function waits until it is possible to write a full sound buffer */
-static void
-OBSD_WaitAudio(_THIS)
-{
-#ifndef USE_BLOCKING_WRITES /* Not necessary when using blocking writes */
- /* See if we need to use timed audio synchronization */
- if ( frame_ticks ) {
- /* Use timer for general audio synchronization */
- Sint32 ticks;
-
- ticks = ((Sint32)(next_frame - SDL_GetTicks()))-FUDGE_TICKS;
- if ( ticks > 0 ) {
- SDL_Delay(ticks);
- }
- } else {
- /* Use select() for audio synchronization */
- fd_set fdset;
- struct timeval timeout;
-
- FD_ZERO(&fdset);
- FD_SET(audio_fd, &fdset);
- timeout.tv_sec = 10;
- timeout.tv_usec = 0;
-#ifdef DEBUG_AUDIO
- fprintf(stderr, "Waiting for audio to get ready\n");
-#endif
- if ( select(audio_fd+1, NULL, &fdset, NULL, &timeout) <= 0 ) {
- const char *message =
- "Audio timeout - buggy audio driver? (disabled)";
- /* In general we should never print to the screen,
- but in this case we have no other way of letting
- the user know what happened.
- */
- fprintf(stderr, "SDL: %s\n", message);
- this->enabled = 0;
- /* Don't try to close - may hang */
- audio_fd = -1;
-#ifdef DEBUG_AUDIO
- fprintf(stderr, "Done disabling audio\n");
-#endif
- }
-#ifdef DEBUG_AUDIO
- fprintf(stderr, "Ready!\n");
-#endif
- }
-#endif /* !USE_BLOCKING_WRITES */
-}
-
-static void
-OBSD_PlayAudio(_THIS)
-{
- int written, p=0;
-
- /* Write the audio data, checking for EAGAIN on broken audio drivers */
- do {
- written = write(audio_fd, &mixbuf[p], mixlen-p);
- if (written>0)
- p += written;
- if (written == -1 && errno != 0 && errno != EAGAIN && errno != EINTR)
- {
- /* Non recoverable error has occurred. It should be reported!!! */
- perror("audio");
- break;
- }
-
- if ( p < written || ((written < 0) && ((errno == 0) || (errno == EAGAIN))) ) {
- SDL_Delay(1); /* Let a little CPU time go by */
- }
- } while ( p < written );
-
- /* If timer synchronization is enabled, set the next write frame */
- if ( frame_ticks ) {
- next_frame += frame_ticks;
- }
-
- /* If we couldn't write, assume fatal error for now */
- if ( written < 0 ) {
- this->enabled = 0;
- }
-#ifdef DEBUG_AUDIO
- fprintf(stderr, "Wrote %d bytes of audio data\n", written);
-#endif
-}
-
-static Uint8
-*OBSD_GetAudioBuf(_THIS)
-{
- return(mixbuf);
-}
-
-static void
-OBSD_CloseAudio(_THIS)
-{
- if(mixbuf != NULL) {
- SDL_FreeAudioMem(mixbuf);
- mixbuf = NULL;
- }
- if(audio_fd >= 0) {
- close(audio_fd);
- audio_fd = -1;
- }
-}
-
-#ifdef DEBUG_AUDIO
-void
-OBSD_Status(_THIS)
-{
- audio_info_t info;
-
- if(ioctl(audio_fd, AUDIO_GETINFO, &info) < 0) {
- fprintf(stderr,"AUDIO_GETINFO failed.\n");
- return;
- }
-
- fprintf(stderr,"\n"
-"[play/record info]\n"
-"buffer size : %d bytes\n"
-"sample rate : %i Hz\n"
-"channels : %i\n"
-"precision : %i-bit\n"
-"encoding : 0x%x\n"
-"seek : %i\n"
-"sample count : %i\n"
-"EOF count : %i\n"
-"paused : %s\n"
-"error occured : %s\n"
-"waiting : %s\n"
-"active : %s\n"
-"",
- info.play.buffer_size,
- info.play.sample_rate,
- info.play.channels,
- info.play.precision,
- info.play.encoding,
- info.play.seek,
- info.play.samples,
- info.play.eof,
- info.play.pause ? "yes" : "no",
- info.play.error ? "yes" : "no",
- info.play.waiting ? "yes" : "no",
- info.play.active ? "yes": "no");
-
- fprintf(stderr,"\n"
-"[audio info]\n"
-"monitor_gain : %i\n"
-"hw block size : %d bytes\n"
-"hi watermark : %i\n"
-"lo watermark : %i\n"
-"audio mode : %s\n"
-"",
- info.monitor_gain,
- info.blocksize,
- info.hiwat, info.lowat,
- (info.mode == AUMODE_PLAY) ? "PLAY"
- : (info.mode = AUMODE_RECORD) ? "RECORD"
- : (info.mode == AUMODE_PLAY_ALL ? "PLAY_ALL"
- : "?"));
-}
-#endif /* DEBUG_AUDIO */
-
-static int
-OBSD_OpenAudio(_THIS, SDL_AudioSpec *spec)
-{
- char audiodev[64];
- Uint16 format;
- audio_info_t info;
-
- AUDIO_INITINFO(&info);
-
- /* Calculate the final parameters for this audio specification */
- SDL_CalculateAudioSpec(spec);
-
-#ifdef USE_TIMER_SYNC
- frame_ticks = 0.0;
-#endif
-
- /* Open the audio device */
- audio_fd = SDL_OpenAudioPath(audiodev, sizeof(audiodev), OPEN_FLAGS, 0);
- if(audio_fd < 0) {
- SDL_SetError("Couldn't open %s: %s", audiodev, strerror(errno));
- return(-1);
- }
-
- /* Set to play mode */
- info.mode = AUMODE_PLAY;
- if(ioctl(audio_fd, AUDIO_SETINFO, &info) < 0) {
- SDL_SetError("Couldn't put device into play mode");
- return(-1);
- }
-
- mixbuf = NULL;
- AUDIO_INITINFO(&info);
- for (format = SDL_FirstAudioFormat(spec->format);
- format; format = SDL_NextAudioFormat())
- {
- switch(format) {
- case AUDIO_U8:
- info.play.encoding = AUDIO_ENCODING_ULINEAR;
- info.play.precision = 8;
- break;
- case AUDIO_S8:
- info.play.encoding = AUDIO_ENCODING_SLINEAR;
- info.play.precision = 8;
- break;
- case AUDIO_S16LSB:
- info.play.encoding = AUDIO_ENCODING_SLINEAR_LE;
- info.play.precision = 16;
- break;
- case AUDIO_S16MSB:
- info.play.encoding = AUDIO_ENCODING_SLINEAR_BE;
- info.play.precision = 16;
- break;
- case AUDIO_U16LSB:
- info.play.encoding = AUDIO_ENCODING_ULINEAR_LE;
- info.play.precision = 16;
- break;
- case AUDIO_U16MSB:
- info.play.encoding = AUDIO_ENCODING_ULINEAR_BE;
- info.play.precision = 16;
- break;
- default:
- continue;
- }
- if (ioctl(audio_fd, AUDIO_SETINFO, &info) == 0)
- break;
- }
-
- if(!format) {
- SDL_SetError("No supported encoding for 0x%x", spec->format);
- return(-1);
- }
-
- spec->format = format;
-
- AUDIO_INITINFO(&info);
- info.play.channels = spec->channels;
- if (ioctl(audio_fd, AUDIO_SETINFO, &info) == -1)
- spec->channels = 1;
- AUDIO_INITINFO(&info);
- info.play.sample_rate = spec->freq;
- info.blocksize = spec->size;
- info.hiwat = 5;
- info.lowat = 3;
- (void)ioctl(audio_fd, AUDIO_SETINFO, &info);
- (void)ioctl(audio_fd, AUDIO_GETINFO, &info);
- spec->freq = info.play.sample_rate;
- /* Allocate mixing buffer */
- mixlen = spec->size;
- mixbuf = (Uint8*)SDL_AllocAudioMem(mixlen);
- if(mixbuf == NULL) {
- return(-1);
- }
- SDL_memset(mixbuf, spec->silence, spec->size);
-
- /* Get the parent process id (we're the parent of the audio thread) */
- parent = getpid();
-
-#ifdef DEBUG_AUDIO
- OBSD_Status(this);
-#endif
-
- /* We're ready to rock and roll. :-) */
- return(0);
-}
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