src/audio/bsd/SDL_bsdaudio.c
author Ryan C. Gordon <icculus@icculus.org>
Sat, 07 Oct 2006 05:36:36 +0000
branchSDL-ryan-multiple-audio-device
changeset 3820 1f156fd874fa
parent 3816 9d070c1a45fa
child 3846 66fb40445587
permissions -rw-r--r--
Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and some other tweaks in already-converted drivers.
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/*
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    SDL - Simple DirectMedia Layer
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    Copyright (C) 1997-2004 Sam Lantinga
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    This library is free software; you can redistribute it and/or
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    modify it under the terms of the GNU Library General Public
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    License as published by the Free Software Foundation; either
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    version 2 of the License, or (at your option) any later version.
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    This library is distributed in the hope that it will be useful,
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    but WITHOUT ANY WARRANTY; without even the implied warranty of
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    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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    Library General Public License for more details.
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    You should have received a copy of the GNU Library General Public
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    License along with this library; if not, write to the Free
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    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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    Sam Lantinga
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    slouken@libsdl.org
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*/
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#include "SDL_config.h"
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/*
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 * Driver for native OpenBSD/NetBSD audio(4).
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 * vedge@vedge.com.ar.
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 */
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#include <errno.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <sys/time.h>
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#include <sys/ioctl.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <sys/audioio.h>
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#include "SDL_timer.h"
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#include "SDL_audio.h"
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#include "../SDL_audiomem.h"
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#include "../SDL_audio_c.h"
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#include "../SDL_audiodev_c.h"
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#include "SDL_bsdaudio.h"
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/* The tag name used by NetBSD/OpenBSD audio */
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#ifdef __NetBSD__
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#define BSD_AUDIO_DRIVER_NAME         "netbsd"
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#define BSD_AUDIO_DRIVER_DESC         "Native NetBSD audio"
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#else
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#define BSD_AUDIO_DRIVER_NAME         "openbsd"
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#define BSD_AUDIO_DRIVER_DESC         "Native OpenBSD audio"
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#endif
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/* Open the audio device for playback, and don't block if busy */
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/* #define USE_BLOCKING_WRITES */
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/* Use timer for synchronization */
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/* #define USE_TIMER_SYNC */
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/* #define DEBUG_AUDIO */
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/* #define DEBUG_AUDIO_STREAM */
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#ifdef USE_BLOCKING_WRITES
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#define OPEN_FLAGS_OUTPUT O_WRONLY
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#define OPEN_FLAGS_INPUT O_RDONLY
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#else
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#define OPEN_FLAGS_OUTPUT (O_WRONLY|O_NONBLOCK)
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#define OPEN_FLAGS_INPUT (O_RDONLY|O_NONBLOCK)
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#endif
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/* !!! FIXME: so much cut and paste with dsp/dma drivers... */
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static char **outputDevices = NULL;
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static int outputDeviceCount = 0;
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static char **inputDevices = NULL;
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static int inputDeviceCount = 0;
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static inline void
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free_device_list(char ***devs, int *count)
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{
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    SDL_FreeUnixAudioDevices(devs, count);
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}
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static inline void
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build_device_list(int iscapture, char ***devs, int *count)
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{
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    const int flags = ((iscapture) ? OPEN_FLAGS_INPUT : OPEN_FLAGS_OUTPUT);
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    free_device_list(devs, count);
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    SDL_EnumUnixAudioDevices(flags, 0, NULL, devs, count);
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}
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static inline void
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build_device_lists(void)
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{
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    build_device_list(0, &outputDevices, &outputDeviceCount);
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    build_device_list(1, &inputDevices, &inputDeviceCount);
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}
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static inline void
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free_device_lists(void)
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{
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    free_device_list(&outputDevices, &outputDeviceCount);
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    free_device_list(&inputDevices, &inputDeviceCount);
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}
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static int
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BSDAUDIO_Available(void)
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{
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    int available = 0;
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    build_device_lists();
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    available = ((outputDeviceCount > 0) || (inputDeviceCount > 0));
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    free_device_lists();
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    return available;
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}
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static void
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BSDAUDIO_Deinitialize(void)
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{
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    free_device_lists();
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}
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   123
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static int
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BSDAUDIO_DetectDevices(int iscapture)
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{
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    if (iscapture) {
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        build_device_list(1, &inputDevices, &inputDeviceCount);
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        return inputDeviceCount;
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   131
    } else {
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        build_device_list(0, &outputDevices, &outputDeviceCount);
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        return outputDeviceCount;
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    }
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    return 0;  /* shouldn't ever hit this. */
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}
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   138
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static const char *
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BSDAUDIO_GetDeviceName(int index, int iscapture)
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{
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    if ((iscapture) && (index < inputDeviceCount)) {
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        return inputDevices[index];
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   144
    } else if ((!iscapture) && (index < outputDeviceCount)) {
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   145
        return outputDevices[index];
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   146
    }
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   147
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    SDL_SetError("No such device");
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    return NULL;
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}
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   152
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static void
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BSDAUDIO_Status(_THIS)
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{
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   156
#ifdef DEBUG_AUDIO
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    audio_info_t info;
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   158
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    if (ioctl(this->hidden->audio_fd, AUDIO_GETINFO, &info) < 0) {
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        fprintf(stderr, "AUDIO_GETINFO failed.\n");
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        return;
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    }
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   163
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    fprintf(stderr, "\n"
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            "[play/record info]\n"
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            "buffer size	:   %d bytes\n"
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   167
            "sample rate	:   %i Hz\n"
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            "channels	:   %i\n"
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   169
            "precision	:   %i-bit\n"
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   170
            "encoding	:   0x%x\n"
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   171
            "seek		:   %i\n"
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   172
            "sample count	:   %i\n"
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   173
            "EOF count	:   %i\n"
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   174
            "paused		:   %s\n"
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   175
            "error occured	:   %s\n"
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   176
            "waiting		:   %s\n"
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   177
            "active		:   %s\n"
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   178
            "",
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   179
            info.play.buffer_size,
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   180
            info.play.sample_rate,
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   181
            info.play.channels,
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   182
            info.play.precision,
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   183
            info.play.encoding,
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   184
            info.play.seek,
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   185
            info.play.samples,
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   186
            info.play.eof,
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   187
            info.play.pause ? "yes" : "no",
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   188
            info.play.error ? "yes" : "no",
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   189
            info.play.waiting ? "yes" : "no",
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   190
            info.play.active ? "yes" : "no");
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   191
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    fprintf(stderr, "\n"
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   193
            "[audio info]\n"
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   194
            "monitor_gain	:   %i\n"
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   195
            "hw block size	:   %d bytes\n"
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   196
            "hi watermark	:   %i\n"
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   197
            "lo watermark	:   %i\n"
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   198
            "audio mode	:   %s\n"
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   199
            "",
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   200
            info.monitor_gain,
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   201
            info.blocksize,
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   202
            info.hiwat, info.lowat,
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   203
            (info.mode == AUMODE_PLAY) ? "PLAY"
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   204
            : (info.mode = AUMODE_RECORD) ? "RECORD"
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   205
            : (info.mode == AUMODE_PLAY_ALL ? "PLAY_ALL" : "?"));
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   206
#endif /* DEBUG_AUDIO */
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   207
}
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   208
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   209
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   210
/* This function waits until it is possible to write a full sound buffer */
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   211
static void
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   212
BSDAUDIO_WaitDevice(_THIS)
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   213
{
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   214
#ifndef USE_BLOCKING_WRITES     /* Not necessary when using blocking writes */
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   215
    /* See if we need to use timed audio synchronization */
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   216
    if (this->hidden->frame_ticks) {
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   217
        /* Use timer for general audio synchronization */
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   218
        Sint32 ticks;
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   219
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   220
        ticks = ((Sint32)(this->hidden->next_frame-SDL_GetTicks()))-FUDGE_TICKS;
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   221
        if (ticks > 0) {
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   222
            SDL_Delay(ticks);
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   223
        }
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   224
    } else {
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   225
        /* Use select() for audio synchronization */
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   226
        fd_set fdset;
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   227
        struct timeval timeout;
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   228
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   229
        FD_ZERO(&fdset);
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   230
        FD_SET(this->hidden->audio_fd, &fdset);
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   231
        timeout.tv_sec = 10;
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   232
        timeout.tv_usec = 0;
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   233
#ifdef DEBUG_AUDIO
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   234
        fprintf(stderr, "Waiting for audio to get ready\n");
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   235
#endif
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   236
        if (select(this->hidden->audio_fd+1,NULL,&fdset,NULL,&timeout) <= 0) {
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   237
            const char *message =
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                "Audio timeout - buggy audio driver? (disabled)";
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            /* In general we should never print to the screen,
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               but in this case we have no other way of letting
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               the user know what happened.
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             */
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            fprintf(stderr, "SDL: %s\n", message);
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            this->enabled = 0;
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   245
            /* Don't try to close - may hang */
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   246
            this->hidden->audio_fd = -1;
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   247
#ifdef DEBUG_AUDIO
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            fprintf(stderr, "Done disabling audio\n");
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   249
#endif
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   250
        }
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#ifdef DEBUG_AUDIO
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   252
        fprintf(stderr, "Ready!\n");
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   253
#endif
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   254
    }
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   255
#endif /* !USE_BLOCKING_WRITES */
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   256
}
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   257
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   258
static void
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BSDAUDIO_PlayDevice(_THIS)
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{
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   261
    int written, p = 0;
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   262
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   263
    /* Write the audio data, checking for EAGAIN on broken audio drivers */
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   264
    do {
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   265
        written = write(this->hidden->audio_fd,
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   266
                        &this->hidden->mixbuf[p],
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   267
                        this->hidden->mixlen - p);
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   268
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   269
        if (written > 0)
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   270
            p += written;
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   271
        if (written == -1 && errno != 0 && errno != EAGAIN && errno != EINTR) {
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   272
            /* Non recoverable error has occurred. It should be reported!!! */
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   273
            perror("audio");
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   274
            break;
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   275
        }
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   276
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   277
        if (p < written
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   278
            || ((written < 0) && ((errno == 0) || (errno == EAGAIN)))) {
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   279
            SDL_Delay(1);       /* Let a little CPU time go by */
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   280
        }
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   281
    }
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   282
    while (p < written);
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   283
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   284
    /* If timer synchronization is enabled, set the next write frame */
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   285
    if (this->hidden->frame_ticks) {
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   286
        this->hidden->next_frame += this->hidden->frame_ticks;
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   287
    }
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   288
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   289
    /* If we couldn't write, assume fatal error for now */
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   290
    if (written < 0) {
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   291
        this->enabled = 0;
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   292
    }
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   293
#ifdef DEBUG_AUDIO
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   294
    fprintf(stderr, "Wrote %d bytes of audio data\n", written);
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   295
#endif
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   296
}
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   297
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   298
static Uint8 *
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   299
BSDAUDIO_GetDeviceBuf(_THIS)
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   300
{
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   301
    return (this->hidden->mixbuf);
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   302
}
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   303
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   304
static void
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   305
BSDAUDIO_CloseDevice(_THIS)
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   306
{
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   307
    if (this->hidden != NULL) {
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   308
        if (this->hidden->mixbuf != NULL) {
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   309
            SDL_FreeAudioMem(this->hidden->mixbuf);
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   310
            this->hidden->mixbuf = NULL;
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diff changeset
   311
        }
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   312
        if (this->hidden->audio_fd >= 0) {
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   313
            close(this->hidden->audio_fd);
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   314
            this->hidden->audio_fd = -1;
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diff changeset
   315
        }
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
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diff changeset
   316
        SDL_free(this->hidden);
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   317
        this->hidden = NULL;
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diff changeset
   318
    }
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diff changeset
   319
}
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   320
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   321
static int
3820
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   322
BSDAUDIO_OpenDevice(_THIS, const char *devname, int iscapture)
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   323
{
3820
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
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   324
    const int flags = ((iscapture) ? OPEN_FLAGS_INPUT : OPEN_FLAGS_OUTPUT);
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   325
    SDL_AudioFormat format = 0;
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   326
    audio_info_t info;
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   327
3820
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
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diff changeset
   328
    /* We don't care what the devname is...we'll try to open anything. */
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
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diff changeset
   329
    /*  ...but default to first name in the list... */
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diff changeset
   330
    if (devname == NULL) {
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
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parents: 3816
diff changeset
   331
        if ( ((iscapture) && (inputDeviceCount == 0)) ||
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
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diff changeset
   332
             ((!iscapture) && (outputDeviceCount == 0)) ) {
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
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diff changeset
   333
            SDL_SetError("No such audio device");
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
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diff changeset
   334
            return 0;
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   335
        }
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   336
        devname = ((iscapture) ? inputDevices[0] : outputDevices[0]);
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
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diff changeset
   337
    }
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
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diff changeset
   338
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
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diff changeset
   339
    /* Initialize all variables that we clean on shutdown */
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
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diff changeset
   340
    this->hidden = (struct SDL_PrivateAudioData *)
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   341
                        SDL_malloc((sizeof *this->hidden));
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   342
    if (this->hidden == NULL) {
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   343
        SDL_OutOfMemory();
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
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diff changeset
   344
        return 0;
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   345
    }
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   346
    SDL_memset(this->hidden, 0, (sizeof *this->hidden));
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   347
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   348
    /* Open the audio device */
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   349
    this->hidden->audio_fd = open(devname, flags, 0);
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   350
    if (this->hidden->audio_fd < 0) {
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   351
        SDL_SetError("Couldn't open %s: %s", devname, strerror(errno));
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   352
        return 0;
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   353
    }
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   354
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   355
    AUDIO_INITINFO(&info);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
   356
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   357
    /* Calculate the final parameters for this audio specification */
3820
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   358
    SDL_CalculateAudioSpec(&this->spec);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
   359
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   360
    /* Set to play mode */
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   361
    info.mode = AUMODE_PLAY;
3820
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   362
    if (ioctl(this->hidden->audio_fd, AUDIO_SETINFO, &info) < 0) {
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   363
        BSDAUDIO_CloseDevice(this);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
   364
        SDL_SetError("Couldn't put device into play mode");
3820
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   365
        return 0;
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   366
    }
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
   367
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   368
    AUDIO_INITINFO(&info);
3820
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   369
    for (format = SDL_FirstAudioFormat(this->spec.format);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
   370
         format; format = SDL_NextAudioFormat()) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
   371
        switch (format) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
   372
        case AUDIO_U8:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
   373
            info.play.encoding = AUDIO_ENCODING_ULINEAR;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
   374
            info.play.precision = 8;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
   375
            break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
   376
        case AUDIO_S8:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
   377
            info.play.encoding = AUDIO_ENCODING_SLINEAR;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
   378
            info.play.precision = 8;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
   379
            break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
   380
        case AUDIO_S16LSB:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
   381
            info.play.encoding = AUDIO_ENCODING_SLINEAR_LE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
   382
            info.play.precision = 16;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
   383
            break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
   384
        case AUDIO_S16MSB:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
   385
            info.play.encoding = AUDIO_ENCODING_SLINEAR_BE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
   386
            info.play.precision = 16;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
   387
            break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
   388
        case AUDIO_U16LSB:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
   389
            info.play.encoding = AUDIO_ENCODING_ULINEAR_LE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
   390
            info.play.precision = 16;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
   391
            break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
   392
        case AUDIO_U16MSB:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
   393
            info.play.encoding = AUDIO_ENCODING_ULINEAR_BE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
   394
            info.play.precision = 16;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
   395
            break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
   396
        default:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
   397
            continue;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
   398
        }
3820
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   399
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   400
        if (ioctl(this->hidden->audio_fd, AUDIO_SETINFO, &info) == 0) {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
   401
            break;
3820
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   402
        }
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   403
    }
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   404
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
   405
    if (!format) {
3820
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   406
        BSDAUDIO_CloseDevice(this);
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   407
        SDL_SetError("No supported encoding for 0x%x", this->spec.format);
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   408
        return 0;
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   409
    }
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   410
3820
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   411
    this->spec.format = format;
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   412
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   413
    AUDIO_INITINFO(&info);
3820
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   414
    info.play.channels = this->spec.channels;
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   415
    if (ioctl(this->hidden->audio_fd, AUDIO_SETINFO, &info) == -1) {
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   416
        this->spec.channels = 1;
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   417
    }
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   418
    AUDIO_INITINFO(&info);
3820
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   419
    info.play.sample_rate = this->spec.freq;
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   420
    info.blocksize = this->spec.size;
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   421
    info.hiwat = 5;
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   422
    info.lowat = 3;
3820
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   423
    (void) ioctl(this->hidden->audio_fd, AUDIO_SETINFO, &info);
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   424
    (void) ioctl(this->hidden->audio_fd, AUDIO_GETINFO, &info);
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   425
    this->spec.freq = info.play.sample_rate;
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   426
    /* Allocate mixing buffer */
3820
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   427
    this->hidden->mixlen = this->spec.size;
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   428
    this->hidden->mixbuf = (Uint8 *) SDL_AllocAudioMem(this->hidden->mixlen);
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   429
    if (this->hidden->mixbuf == NULL) {
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   430
        BSDAUDIO_CloseDevice(this);
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   431
        SDL_OutOfMemory();
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   432
        return 0;
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   433
    }
3820
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   434
    SDL_memset(this->hidden->mixbuf, this->spec.silence, this->spec.size);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
   435
3820
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   436
    BSDAUDIO_Status(this);
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   437
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   438
    /* We're ready to rock and roll. :-) */
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
   439
    return (0);
1567
12b6d331d82a Good idea, renaming OpenBSD audio to BSD audio.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   440
}
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
   441
3820
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   442
static int
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   443
BSDAUDIO_Init(SDL_AudioDriverImpl *impl)
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   444
{
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   445
    /* Set the function pointers */
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   446
    impl->DetectDevices = DSP_DetectDevices;
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   447
    impl->GetDeviceName = DSP_GetDeviceName;
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   448
    impl->OpenDevice = DSP_OpenDevice;
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   449
    impl->PlayDevice = DSP_PlayDevice;
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   450
    impl->WaitDevice = DSP_WaitDevice;
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   451
    impl->GetDeviceBuf = DSP_GetDeviceBuf;
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   452
    impl->CloseDevice = DSP_CloseDevice;
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   453
    impl->Deinitialize = DSP_Deinitialize;
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   454
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   455
    build_device_lists();
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   456
    return 1;
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   457
}
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   458
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   459
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   460
AudioBootStrap BSD_AUDIO_bootstrap = {
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   461
    BSD_AUDIO_DRIVER_NAME, BSD_AUDIO_DRIVER_DESC,
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   462
    BSDAUDIO_Available, BSDAUDIO_Init, 0
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   463
};
1f156fd874fa Moved more audio drivers to 1.3 API (all 5 MiNT backends, BSD, IRIX...), and
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
   464
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1583
diff changeset
   465
/* vi: set ts=4 sw=4 expandtab: */