src/audio/nto/SDL_nto_audio.c
author Ryan C. Gordon <icculus@icculus.org>
Thu, 24 Aug 2006 12:10:46 +0000
changeset 1982 3b4ce57c6215
parent 1895 c121d94672cb
child 2007 cff63f857ff3
permissions -rw-r--r--
First shot at new audio data types (int32 and float32). Notable changes: - Converters between types are autogenerated. Instead of making multiple passes over the data with seperate filters for endianess, size, signedness, etc, converting between data types is always one specialized filter. This simplifies SDL_BuildAudioCVT(), which otherwise had a million edge cases with the new types, and makes the actually conversions more CPU cache friendly. Left a stub for adding specific optimized versions of these routines (SSE/MMX/Altivec, assembler, etc) - Autogenerated converters are built by SDL/src/audio/sdlgenaudiocvt.pl. This does not need to be run unless tweaking the code, and thus doesn't need integration into the build system. - Went through all the drivers and tried to weed out all the "Uint16" references that are better specified with the new SDL_AudioFormat typedef. - Cleaned out a bunch of hardcoded bitwise magic numbers and replaced them with new SDL_AUDIO_* macros. - Added initial float32 and int32 support code. Theoretically, existing drivers will push these through converters to get the data they want to feed to the hardware. Still TODO: - Optimize and debug new converters. - Update the CoreAudio backend to accept float32 data directly. - Other backends, too? - SDL_LoadWAV() needs to be updated to support int32 and float32 .wav files (both of which exist and can be generated by 'sox' for testing purposes). - Update the mixer to handle new datatypes. - Optionally update SDL_sound and SDL_mixer, etc.
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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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#include <errno.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <signal.h>
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#include <sys/types.h>
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#include <sys/time.h>
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#include <sched.h>
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#include <sys/select.h>
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#include <sys/neutrino.h>
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#include <sys/asoundlib.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_nto_audio.h"
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/* The tag name used by NTO audio */
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#define DRIVER_NAME "qsa-nto"
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/* default channel communication parameters */
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#define DEFAULT_CPARAMS_RATE 22050
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#define DEFAULT_CPARAMS_VOICES 1
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/* FIXME: need to add in the near future flexible logic with frag_size and frags count */
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#define DEFAULT_CPARAMS_FRAG_SIZE 4096
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#define DEFAULT_CPARAMS_FRAGS_MIN 1
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#define DEFAULT_CPARAMS_FRAGS_MAX 1
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/* Open the audio device for playback, and don't block if busy */
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#define OPEN_FLAGS SND_PCM_OPEN_PLAYBACK
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#define QSA_NO_WORKAROUNDS  0x00000000
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#define QSA_MMAP_WORKAROUND 0x00000001
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struct BuggyCards
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{
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    char *cardname;
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    unsigned long bugtype;
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};
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#define QSA_WA_CARDS 3
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struct BuggyCards buggycards[QSA_WA_CARDS] = {
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    {"Sound Blaster Live!", QSA_MMAP_WORKAROUND},
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    {"Vortex 8820", QSA_MMAP_WORKAROUND},
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    {"Vortex 8830", QSA_MMAP_WORKAROUND},
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};
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/* Audio driver functions */
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static void NTO_ThreadInit(_THIS);
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static int NTO_OpenAudio(_THIS, SDL_AudioSpec * spec);
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static void NTO_WaitAudio(_THIS);
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static void NTO_PlayAudio(_THIS);
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static Uint8 *NTO_GetAudioBuf(_THIS);
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static void NTO_CloseAudio(_THIS);
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/* card names check to apply the workarounds */
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static int
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NTO_CheckBuggyCards(_THIS, unsigned long checkfor)
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{
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    char scardname[33];
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    int it;
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    if (snd_card_get_name(cardno, scardname, 32) < 0) {
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        return 0;
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    }
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    for (it = 0; it < QSA_WA_CARDS; it++) {
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        if (SDL_strcmp(buggycards[it].cardname, scardname) == 0) {
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            if (buggycards[it].bugtype == checkfor) {
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                return 1;
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            }
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        }
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    }
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    return 0;
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}
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static void
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NTO_ThreadInit(_THIS)
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{
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    int status;
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    struct sched_param param;
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    /* increasing default 10 priority to 25 to avoid jerky sound */
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    status = SchedGet(0, 0, &param);
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    param.sched_priority = param.sched_curpriority + 15;
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    status = SchedSet(0, 0, SCHED_NOCHANGE, &param);
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}
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/* PCM transfer channel parameters initialize function */
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static void
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NTO_InitAudioParams(snd_pcm_channel_params_t * cpars)
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{
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    SDL_memset(cpars, 0, sizeof(snd_pcm_channel_params_t));
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    cpars->channel = SND_PCM_CHANNEL_PLAYBACK;
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    cpars->mode = SND_PCM_MODE_BLOCK;
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    cpars->start_mode = SND_PCM_START_DATA;
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    cpars->stop_mode = SND_PCM_STOP_STOP;
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    cpars->format.format = SND_PCM_SFMT_S16_LE;
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    cpars->format.interleave = 1;
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    cpars->format.rate = DEFAULT_CPARAMS_RATE;
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    cpars->format.voices = DEFAULT_CPARAMS_VOICES;
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    cpars->buf.block.frag_size = DEFAULT_CPARAMS_FRAG_SIZE;
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    cpars->buf.block.frags_min = DEFAULT_CPARAMS_FRAGS_MIN;
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    cpars->buf.block.frags_max = DEFAULT_CPARAMS_FRAGS_MAX;
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}
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static int
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NTO_AudioAvailable(void)
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{
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    /*  See if we can open a nonblocking channel.
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       Return value '1' means we can.
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       Return value '0' means we cannot. */
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    int available;
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    int rval;
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    snd_pcm_t *handle;
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    available = 0;
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    handle = NULL;
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    rval = snd_pcm_open_preferred(&handle, NULL, NULL, OPEN_FLAGS);
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    if (rval >= 0) {
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        available = 1;
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        if ((rval = snd_pcm_close(handle)) < 0) {
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            SDL_SetError
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                ("NTO_AudioAvailable(): snd_pcm_close failed: %s\n",
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                 snd_strerror(rval));
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            available = 0;
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        }
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    } else {
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        SDL_SetError
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            ("NTO_AudioAvailable(): there are no available audio devices.\n");
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    }
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   162
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    return (available);
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}
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static void
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NTO_DeleteAudioDevice(SDL_AudioDevice * device)
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{
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    if ((device) && (device->hidden)) {
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        SDL_free(device->hidden);
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    }
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    if (device) {
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        SDL_free(device);
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    }
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}
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static SDL_AudioDevice *
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NTO_CreateAudioDevice(int devindex)
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{
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    SDL_AudioDevice *this;
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   181
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    /* Initialize all variables that we clean on shutdown */
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    this = (SDL_AudioDevice *) SDL_malloc(sizeof(SDL_AudioDevice));
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    if (this) {
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        SDL_memset(this, 0, sizeof(SDL_AudioDevice));
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        this->hidden = (struct SDL_PrivateAudioData *)
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            SDL_malloc(sizeof(struct SDL_PrivateAudioData));
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    }
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    if ((this == NULL) || (this->hidden == NULL)) {
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        SDL_OutOfMemory();
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        if (this) {
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            SDL_free(this);
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   193
        }
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        return (0);
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   195
    }
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    SDL_memset(this->hidden, 0, sizeof(struct SDL_PrivateAudioData));
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    audio_handle = NULL;
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   198
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   199
    /* Set the function pointers */
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    this->ThreadInit = NTO_ThreadInit;
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   201
    this->OpenAudio = NTO_OpenAudio;
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    this->WaitAudio = NTO_WaitAudio;
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    this->PlayAudio = NTO_PlayAudio;
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    this->GetAudioBuf = NTO_GetAudioBuf;
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    this->CloseAudio = NTO_CloseAudio;
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   206
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    this->free = NTO_DeleteAudioDevice;
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   208
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   209
    return this;
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   210
}
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   211
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AudioBootStrap QNXNTOAUDIO_bootstrap = {
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   213
    DRIVER_NAME, "QNX6 QSA-NTO Audio",
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   214
    NTO_AudioAvailable,
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   215
    NTO_CreateAudioDevice
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   216
};
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   217
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/* This function waits until it is possible to write a full sound buffer */
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   219
static void
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NTO_WaitAudio(_THIS)
0
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   221
{
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   222
    fd_set wfds;
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   223
    int selectret;
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   224
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   225
    FD_ZERO(&wfds);
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   226
    FD_SET(audio_fd, &wfds);
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   227
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   228
    do {
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   229
        selectret = select(audio_fd + 1, NULL, &wfds, NULL, NULL);
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   230
        switch (selectret) {
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   231
        case -1:
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   232
        case 0:
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   233
            SDL_SetError("NTO_WaitAudio(): select() failed: %s\n",
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   234
                         strerror(errno));
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   235
            return;
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   236
        default:
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   237
            if (FD_ISSET(audio_fd, &wfds)) {
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   238
                return;
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   239
            }
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   240
            break;
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   241
        }
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   242
    }
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   243
    while (1);
0
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   244
}
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   245
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   246
static void
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   247
NTO_PlayAudio(_THIS)
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   248
{
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   249
    int written, rval;
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   250
    int towrite;
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   251
    void *pcmbuffer;
0
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   252
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diff changeset
   253
    if (!this->enabled) {
718
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   254
        return;
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diff changeset
   255
    }
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diff changeset
   256
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   257
    towrite = this->spec.size;
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   258
    pcmbuffer = pcm_buf;
0
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   259
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   260
    /* Write the audio data, checking for EAGAIN (buffer full) and underrun */
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diff changeset
   261
    do {
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   262
        written = snd_pcm_plugin_write(audio_handle, pcm_buf, towrite);
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   263
        if (written != towrite) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1402
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   264
            if ((errno == EAGAIN) || (errno == EWOULDBLOCK)) {
718
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parents: 663
diff changeset
   265
                /* Let a little CPU time go by and try to write again */
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parents: 663
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   266
                SDL_Delay(1);
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parents: 663
diff changeset
   267
                /* if we wrote some data */
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parents: 663
diff changeset
   268
                towrite -= written;
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parents: 663
diff changeset
   269
                pcmbuffer += written * this->spec.channels;
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   270
                continue;
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   271
            } else {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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   272
                if ((errno == EINVAL) || (errno == EIO)) {
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
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parents: 769
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   273
                    SDL_memset(&cstatus, 0, sizeof(cstatus));
718
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   274
                    cstatus.channel = SND_PCM_CHANNEL_PLAYBACK;
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   275
                    if ((rval =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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   276
                         snd_pcm_plugin_status(audio_handle, &cstatus)) < 0) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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   277
                        SDL_SetError
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   278
                            ("NTO_PlayAudio(): snd_pcm_plugin_status failed: %s\n",
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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   279
                             snd_strerror(rval));
718
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   280
                        return;
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   281
                    }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
   282
                    if ((cstatus.status == SND_PCM_STATUS_UNDERRUN)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1402
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   283
                        || (cstatus.status == SND_PCM_STATUS_READY)) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1402
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   284
                        if ((rval =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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   285
                             snd_pcm_plugin_prepare(audio_handle,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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   286
                                                    SND_PCM_CHANNEL_PLAYBACK))
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1402
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   287
                            < 0) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1402
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   288
                            SDL_SetError
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1402
diff changeset
   289
                                ("NTO_PlayAudio(): snd_pcm_plugin_prepare failed: %s\n",
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1402
diff changeset
   290
                                 snd_strerror(rval));
718
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diff changeset
   291
                            return;
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diff changeset
   292
                        }
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
   293
                    }
718
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diff changeset
   294
                    continue;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
   295
                } else {
718
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diff changeset
   296
                    return;
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diff changeset
   297
                }
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
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diff changeset
   298
            }
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1402
diff changeset
   299
        } else {
718
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   300
            /* we wrote all remaining data */
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
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parents: 663
diff changeset
   301
            towrite -= written;
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
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diff changeset
   302
            pcmbuffer += written * this->spec.channels;
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
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parents: 663
diff changeset
   303
        }
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
   304
    }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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   305
    while ((towrite > 0) && (this->enabled));
0
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parents:
diff changeset
   306
718
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diff changeset
   307
    /* If we couldn't write, assume fatal error for now */
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1402
diff changeset
   308
    if (towrite != 0) {
718
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parents: 663
diff changeset
   309
        this->enabled = 0;
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
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parents: 663
diff changeset
   310
    }
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
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parents: 663
diff changeset
   311
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
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parents: 663
diff changeset
   312
    return;
0
74212992fb08 Initial revision
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parents:
diff changeset
   313
}
74212992fb08 Initial revision
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parents:
diff changeset
   314
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1402
diff changeset
   315
static Uint8 *
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   316
NTO_GetAudioBuf(_THIS)
0
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parents:
diff changeset
   317
{
718
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diff changeset
   318
    return pcm_buf;
0
74212992fb08 Initial revision
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parents:
diff changeset
   319
}
74212992fb08 Initial revision
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parents:
diff changeset
   320
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
   321
static void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
   322
NTO_CloseAudio(_THIS)
0
74212992fb08 Initial revision
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parents:
diff changeset
   323
{
718
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diff changeset
   324
    int rval;
0
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parents:
diff changeset
   325
718
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parents: 663
diff changeset
   326
    this->enabled = 0;
0
74212992fb08 Initial revision
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parents:
diff changeset
   327
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   328
    if (audio_handle != NULL) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   329
        if ((rval =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   330
             snd_pcm_plugin_flush(audio_handle,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   331
                                  SND_PCM_CHANNEL_PLAYBACK)) < 0) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   332
            SDL_SetError
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   333
                ("NTO_CloseAudio(): snd_pcm_plugin_flush failed: %s\n",
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   334
                 snd_strerror(rval));
718
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
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parents: 663
diff changeset
   335
            return;
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   336
        }
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   337
        if ((rval = snd_pcm_close(audio_handle)) < 0) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   338
            SDL_SetError("NTO_CloseAudio(): snd_pcm_close failed: %s\n",
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   339
                         snd_strerror(rval));
718
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   340
            return;
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   341
        }
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   342
        audio_handle = NULL;
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   343
    }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   344
}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   345
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1402
diff changeset
   346
static int
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   347
NTO_OpenAudio(_THIS, SDL_AudioSpec * spec)
0
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parents:
diff changeset
   348
{
718
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
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parents: 663
diff changeset
   349
    int rval;
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   350
    int format;
1982
3b4ce57c6215 First shot at new audio data types (int32 and float32).
Ryan C. Gordon <icculus@icculus.org>
parents: 1895
diff changeset
   351
    SDL_AudioFormat test_format;
718
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
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parents: 663
diff changeset
   352
    int found;
0
74212992fb08 Initial revision
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parents:
diff changeset
   353
718
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   354
    audio_handle = NULL;
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   355
    this->enabled = 0;
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   356
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   357
    if (pcm_buf != NULL) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   358
        SDL_FreeAudioMem(pcm_buf);
718
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   359
        pcm_buf = NULL;
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   360
    }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   361
718
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   362
    /* initialize channel transfer parameters to default */
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   363
    NTO_InitAudioParams(&cparams);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   364
718
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   365
    /* Open the audio device */
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   366
    rval =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   367
        snd_pcm_open_preferred(&audio_handle, &cardno, &deviceno, OPEN_FLAGS);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   368
    if (rval < 0) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   369
        SDL_SetError("NTO_OpenAudio(): snd_pcm_open failed: %s\n",
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   370
                     snd_strerror(rval));
718
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   371
        return (-1);
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   372
    }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   373
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   374
    if (!NTO_CheckBuggyCards(this, QSA_MMAP_WORKAROUND)) {
718
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   375
        /* enable count status parameter */
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   376
        if ((rval =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   377
             snd_pcm_plugin_set_disable(audio_handle,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   378
                                        PLUGIN_DISABLE_MMAP)) < 0) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   379
            SDL_SetError("snd_pcm_plugin_set_disable failed: %s\n",
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   380
                         snd_strerror(rval));
718
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   381
            return (-1);
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   382
        }
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   383
    }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   384
718
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   385
    /* Try for a closest match on audio format */
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   386
    format = 0;
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   387
    /* can't use format as SND_PCM_SFMT_U8 = 0 in nto */
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   388
    found = 0;
418
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!)
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
   389
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   390
    for (test_format = SDL_FirstAudioFormat(spec->format); !found;) {
718
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   391
        /* if match found set format to equivalent ALSA 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: 1402
diff changeset
   392
        switch (test_format) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   393
        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: 1402
diff changeset
   394
            format = SND_PCM_SFMT_U8;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   395
            found = 1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   396
            break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   397
        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: 1402
diff changeset
   398
            format = SND_PCM_SFMT_S8;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   399
            found = 1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   400
            break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   401
        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: 1402
diff changeset
   402
            format = SND_PCM_SFMT_S16_LE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   403
            found = 1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   404
            break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   405
        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: 1402
diff changeset
   406
            format = SND_PCM_SFMT_S16_BE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   407
            found = 1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   408
            break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   409
        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: 1402
diff changeset
   410
            format = SND_PCM_SFMT_U16_LE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   411
            found = 1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   412
            break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   413
        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: 1402
diff changeset
   414
            format = SND_PCM_SFMT_U16_BE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   415
            found = 1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   416
            break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   417
        default:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   418
            break;
718
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   419
        }
418
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!)
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
   420
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   421
        if (!found) {
718
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   422
            test_format = SDL_NextAudioFormat();
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   423
        }
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   424
    }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   425
718
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   426
    /* assumes test_format not 0 on success */
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   427
    if (test_format == 0) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   428
        SDL_SetError
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   429
            ("NTO_OpenAudio(): Couldn't find any hardware audio formats");
718
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   430
        return (-1);
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   431
    }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   432
718
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   433
    spec->format = test_format;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   434
718
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   435
    /* Set the audio format */
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   436
    cparams.format.format = format;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   437
718
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   438
    /* Set mono or stereo audio (currently only two channels supported) */
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   439
    cparams.format.voices = spec->channels;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   440
718
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   441
    /* Set rate */
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   442
    cparams.format.rate = spec->freq;
418
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!)
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
   443
718
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   444
    /* Setup the transfer parameters according to cparams */
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   445
    rval = snd_pcm_plugin_params(audio_handle, &cparams);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   446
    if (rval < 0) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   447
        SDL_SetError
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   448
            ("NTO_OpenAudio(): snd_pcm_channel_params failed: %s\n",
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   449
             snd_strerror(rval));
718
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   450
        return (-1);
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   451
    }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   452
718
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   453
    /* Make sure channel is setup right one last time */
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
   454
    SDL_memset(&csetup, 0x00, sizeof(csetup));
718
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   455
    csetup.channel = SND_PCM_CHANNEL_PLAYBACK;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   456
    if (snd_pcm_plugin_setup(audio_handle, &csetup) < 0) {
718
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   457
        SDL_SetError("NTO_OpenAudio(): Unable to setup playback channel\n");
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   458
        return -1;
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   459
    }
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   460
418
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!)
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
   461
718
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   462
    /* Calculate the final parameters for this audio specification */
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   463
    SDL_CalculateAudioSpec(spec);
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   464
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   465
    pcm_len = spec->size;
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   466
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   467
    if (pcm_len == 0) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   468
        pcm_len =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   469
            csetup.buf.block.frag_size * spec->channels *
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   470
            (snd_pcm_format_width(format) / 8);
718
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   471
    }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   472
718
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   473
    /* Allocate memory to the audio buffer and initialize with silence (Note that
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   474
       buffer size must be a multiple of fragment size, so find closest multiple)
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   475
     */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   476
    pcm_buf = (Uint8 *) SDL_AllocAudioMem(pcm_len);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   477
    if (pcm_buf == NULL) {
718
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   478
        SDL_SetError("NTO_OpenAudio(): pcm buffer allocation failed\n");
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   479
        return (-1);
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   480
    }
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
   481
    SDL_memset(pcm_buf, spec->silence, pcm_len);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   482
718
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   483
    /* get the file descriptor */
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   484
    if ((audio_fd =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   485
         snd_pcm_file_descriptor(audio_handle,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   486
                                 SND_PCM_CHANNEL_PLAYBACK)) < 0) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   487
        SDL_SetError
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   488
            ("NTO_OpenAudio(): snd_pcm_file_descriptor failed with error code: %s\n",
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   489
             snd_strerror(rval));
718
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   490
        return (-1);
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   491
    }
418
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!)
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
   492
718
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   493
    /* Trigger audio playback */
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   494
    rval = snd_pcm_plugin_prepare(audio_handle, SND_PCM_CHANNEL_PLAYBACK);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   495
    if (rval < 0) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   496
        SDL_SetError("snd_pcm_plugin_prepare failed: %s\n",
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   497
                     snd_strerror(rval));
718
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   498
        return (-1);
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   499
    }
418
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!)
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
   500
718
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   501
    this->enabled = 1;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   502
718
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   503
    /* Get the parent process id (we're the parent of the audio thread) */
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   504
    parent = getpid();
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   505
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   506
    /* We're really ready to rock and roll. :-) */
cbc0f7fabd1c Date: Sat, 13 Sep 2003 15:50:43 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 663
diff changeset
   507
    return (0);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   508
}
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   509
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   510
/* vi: set ts=4 sw=4 expandtab: */