sdl-ios-xcode: src/audio/nto/SDL_nto

annotate src/audio/nto/SDL_nto_audio.c @ 418:337f3ec4c385

Updated the QNX audio code for QNX 6.2 (thanks Travis!)

author	Sam Lantinga <slouken@libsdl.org>
date	Sun, 16 Jun 2002 04:17:57 +0000
parents	f6ffac90895c
children	b82518082828

rev	line source
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	1 Date: Sun, 16 Jun 2002 00:59:13 -0300
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	2 From: Travis <smallfri@bigfoot.com>
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	3 To: slouken@libsdl.org
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	4 Subject: NTO Audio Fixes
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	5
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	6 /*
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	7 SDL - Simple DirectMedia Layer
297 f6ffac90895c Updated copyright information for 2002 Sam Lantinga <slouken@libsdl.org> parents: 283 diff changeset	8 Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 Sam Lantinga
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	9
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	10 This library is free software; you can redistribute it and/or
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	11 modify it under the terms of the GNU Library General Public
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	12 License as published by the Free Software Foundation; either
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	13 version 2 of the License, or (at your option) any later version.
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	14
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	15 This library is distributed in the hope that it will be useful,
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	16 but WITHOUT ANY WARRANTY; without even the implied warranty of
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	18 Library General Public License for more details.
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	19
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	20 You should have received a copy of the GNU Library General Public
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	21 License along with this library; if not, write to the Free
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	22 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	23
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	24 Sam Lantinga
252 e8157fcb3114 Updated the source with the correct e-mail address Sam Lantinga <slouken@libsdl.org> parents: 0 diff changeset	25 slouken@libsdl.org
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	26 */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	27
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	28 #include <stdlib.h>
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	29 #include <stdio.h>
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	30 #include <string.h>
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	31 #include <errno.h>
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	32 #include <unistd.h>
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	33 #include <fcntl.h>
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	34 #include <signal.h>
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	35 #include <sys/types.h>
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	36 #include <sys/time.h>
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	37 #include <sched.h>
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	38 #include <sys/asoundlib.h>
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	39 #include <sys/select.h>
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	40
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	41 #include "SDL_audio.h"
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	42 #include "SDL_error.h"
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	43 #include "SDL_audiomem.h"
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	44 #include "SDL_audio_c.h"
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	45 #include "SDL_timer.h"
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	46 #include "SDL_nto_audio.h"
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	47
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	48 /* The tag name used by NTO audio */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	49 #define DRIVER_NAME "nto"
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	50
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	51 /* default channel communication parameters */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	52 #define DEFAULT_CPARAMS_RATE 22050
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	53 #define DEFAULT_CPARAMS_VOICES 1
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	54 #define DEFAULT_CPARAMS_FRAG_SIZE 4096
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	55 #define DEFAULT_CPARAMS_FRAGS_MIN 1
283 3d8b6b9f1e18 Date: Mon, 18 Feb 2002 16:46:59 +1200 Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	56 #define DEFAULT_CPARAMS_FRAGS_MAX 1
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	57
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	58 /* Open the audio device for playback, and don't block if busy */
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	59 #define OPEN_FLAGS SND_PCM_OPEN_PLAYBACK
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	60
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	61 /* Audio driver functions */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	62 static int NTO_OpenAudio(_THIS, SDL_AudioSpec *spec);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	63 static void NTO_WaitAudio(_THIS);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	64 static void NTO_PlayAudio(_THIS);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	65 static Uint8 *NTO_GetAudioBuf(_THIS);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	66 static void NTO_CloseAudio(_THIS);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	67
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	68 static snd_pcm_channel_status_t cstatus;
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	69 static snd_pcm_channel_params_t cparams;
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	70 static snd_pcm_channel_setup_t csetup;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	71
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	72 /* PCM transfer channel parameters initialize function */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	73 static void init_pcm_cparams(snd_pcm_channel_params_t* cparams)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	74 {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	75 memset(cparams,0,sizeof(snd_pcm_channel_params_t));
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	76
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	77 cparams->channel = SND_PCM_CHANNEL_PLAYBACK;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	78 cparams->mode = SND_PCM_MODE_BLOCK;
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	79 cparams->start_mode = SND_PCM_START_DATA;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	80 cparams->stop_mode = SND_PCM_STOP_STOP;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	81 cparams->format.format = SND_PCM_SFMT_S16_LE;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	82 cparams->format.interleave = 1;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	83 cparams->format.rate = DEFAULT_CPARAMS_RATE;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	84 cparams->format.voices = DEFAULT_CPARAMS_VOICES;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	85 cparams->buf.block.frag_size = DEFAULT_CPARAMS_FRAG_SIZE;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	86 cparams->buf.block.frags_min = DEFAULT_CPARAMS_FRAGS_MIN;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	87 cparams->buf.block.frags_max = DEFAULT_CPARAMS_FRAGS_MAX;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	88 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	89
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	90 static int Audio_Available(void)
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	91 {
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	92 /*
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	93 See if we can open a nonblocking channel.
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	94 Return value '1' means we can.
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	95 Return value '0' means we cannot.
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	96 */
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	97
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	98 int available;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	99 int rval;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	100 snd_pcm_t *handle;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	101
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	102 available = 0;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	103 handle = NULL;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	104
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	105 rval = snd_pcm_open_preferred(&handle, NULL, NULL, OPEN_FLAGS);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	106
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	107 if (rval >= 0){
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	108 available = 1;
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	109
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	110 if ((rval = snd_pcm_close(handle)) < 0){
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	111 SDL_SetError("snd_pcm_close failed: %s\n",snd_strerror(rval));
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	112 available = 0;
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	113 }
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	114 }
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	115 else{
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	116 SDL_SetError("snd_pcm_open failed: %s\n", snd_strerror(rval));
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	117 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	118
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	119 #ifdef DEBUG_AUDIO
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	120 fprintf(stderr,"AudioAvailable rtns %d\n", available);
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	121 #endif
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	122
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	123 return(available);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	124 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	125
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	126 static void Audio_DeleteDevice(SDL_AudioDevice *device)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	127 {
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	128 #ifdef DEBUG_AUDIO
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	129 fprintf(stderr,"Audio_DeleteDevice\n");
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	130 #endif
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	131
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	132 free(device->hidden);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	133 free(device);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	134 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	135
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	136 static SDL_AudioDevice *Audio_CreateDevice(int devindex)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	137 {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	138 SDL_AudioDevice *this;
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	139 #ifdef DEBUG_AUDIO
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	140 fprintf(stderr,"Audio_CreateDevice\n");
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	141 #endif
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	142 /* Initialize all variables that we clean on shutdown */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	143 this = (SDL_AudioDevice *)malloc(sizeof(SDL_AudioDevice));
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	144 if ( this ) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	145 memset(this, 0, (sizeof *this));
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	146 this->hidden = (struct SDL_PrivateAudioData *)
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	147 malloc((sizeof *this->hidden));
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	148 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	149 if ( (this == NULL) \|\| (this->hidden == NULL) ) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	150 SDL_OutOfMemory();
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	151 if ( this ) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	152 free(this);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	153 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	154 return(0);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	155 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	156 memset(this->hidden, 0, (sizeof *this->hidden));
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	157 audio_handle = NULL;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	158
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	159 /* Set the function pointers */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	160 this->OpenAudio = NTO_OpenAudio;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	161 this->WaitAudio = NTO_WaitAudio;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	162 this->PlayAudio = NTO_PlayAudio;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	163 this->GetAudioBuf = NTO_GetAudioBuf;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	164 this->CloseAudio = NTO_CloseAudio;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	165
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	166 this->free = Audio_DeleteDevice;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	167
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	168 return this;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	169 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	170
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	171 /* Don't change the name from "ALSA_bootstrap" - that's how it's called */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	172 AudioBootStrap ALSA_bootstrap = {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	173 DRIVER_NAME, "Neutrino PCM audio",
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	174 Audio_Available, Audio_CreateDevice
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	175 };
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	176
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	177 /* This function waits until it is possible to write a full sound buffer */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	178 static void NTO_WaitAudio(_THIS)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	179 {
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	180 fd_set wfds;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	181
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	182 FD_SET( audio_fd, &wfds );
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	183 switch( select( audio_fd + 1, NULL, &wfds, NULL, NULL ) )
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	184 {
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	185 case -1:
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	186 case 0:
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	187 /* Error */
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	188 SDL_SetError("select() in NTO_WaitAudio failed: %s\n", strerror(errno));
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	189 break;
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	190 default:
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	191 if(FD_ISSET(audio_fd, &wfds))
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	192 return;
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	193 }
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	194 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	195
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	196 static void NTO_PlayAudio(_THIS)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	197 {
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	198 int written, rval;
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	199 int towrite;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	200
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	201 #ifdef DEBUG_AUDIO
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	202 fprintf(stderr, "NTO_PlayAudio\n");
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	203 #endif
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	204
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	205 if( !this->enabled){
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	206 return;
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	207 }
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	208
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	209 towrite = pcm_len;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	210
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	211 /* Write the audio data, checking for EAGAIN (buffer full) and underrun */
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	212 do {
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	213 written = snd_pcm_plugin_write(audio_handle, pcm_buf, towrite);
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	214 #ifdef DEBUG_AUDIO
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	215 fprintf(stderr, "NTO_PlayAudio: written = %d towrite = %d\n",written,towrite);
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	216 #endif
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	217 if (written != towrite){
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	218 if ((errno == EAGAIN) \|\| (errno == EWOULDBLOCK)){
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	219 SDL_Delay(1); /* Let a little CPU time go by and try to write again */
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	220 #ifdef DEBUG_AUDIO
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	221 fprintf(stderr, "errno == EAGAIN written %d\n", written);
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	222 #endif
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	223 towrite -= written; //we wrote some data
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	224 continue;
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	225 }
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	226 else if((errno == EINVAL) \|\| (errno == EIO)){
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	227 if(errno == EIO){
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	228 #ifdef DEBUG_AUDIO
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	229 fprintf(stderr,"snd_pcm_plugin_write failed EIO: %s\n", snd_strerror(written));
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	230 #endif
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	231 }
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	232 if(errno == EINVAL){
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	233 #ifdef DEBUG_AUDIO
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	234 fprintf(stderr,"snd_pcm_plugin_write failed EINVAL: %s\n", snd_strerror(written));
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	235 #endif
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	236 }
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	237
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	238 memset(&cstatus, 0, sizeof(cstatus));
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	239 if( (rval = snd_pcm_plugin_status(audio_handle, &cstatus)) < 0 ){
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	240 #ifdef DEBUG_AUDIO
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	241 fprintf(stderr, "snd_pcm_plugin_status failed %s\n",snd_strerror(rval));
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	242 #endif
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	243 SDL_SetError("snd_pcm_plugin_status failed: %s\n", snd_strerror(rval));
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	244 return;
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	245 }
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	246
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	247 if ( (cstatus.status == SND_PCM_STATUS_UNDERRUN) \|\| (cstatus.status == SND_PCM_STATUS_READY) ){
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	248 #ifdef DEBUG_AUDIO
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	249 fprintf(stderr, "buffer underrun\n");
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	250 #endif
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	251 if ( (rval = snd_pcm_plugin_prepare (audio_handle,SND_PCM_CHANNEL_PLAYBACK)) < 0 ){
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	252 #ifdef DEBUG_AUDIO
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	253 fprintf(stderr, "NTO_PlayAudio: prepare failed %s\n",snd_strerror(rval));
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	254 #endif
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	255 SDL_SetError("snd_pcm_plugin_prepare failed: %s\n",snd_strerror(rval) );
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	256 return;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	257 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	258 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	259 continue;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	260 }
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	261 else{
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	262 #ifdef DEBUG_AUDIO
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	263 fprintf(stderr, "NTO_PlayAudio: snd_pcm_plugin_write failed unknown errno %d %s\n",errno, snd_strerror(rval));
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	264 #endif
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	265 return;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	266 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	267
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	268 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	269 else
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	270 {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	271 towrite -= written; //we wrote all remaining data
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	272 }
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	273 } while ( (towrite > 0) && (this->enabled) );
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	274
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	275 /* If we couldn't write, assume fatal error for now */
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	276 if ( towrite != 0 ) {
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	277 this->enabled = 0;
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	278 }
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	279 return;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	280 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	281
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	282 static Uint8 *NTO_GetAudioBuf(_THIS)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	283 {
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	284 #ifdef DEBUG_AUDIO
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	285 fprintf(stderr, "NTO_GetAudioBuf: pcm_buf %X\n",(Uint8 *)pcm_buf);
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	286 #endif
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	287 return(pcm_buf);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	288 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	289
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	290 static void NTO_CloseAudio(_THIS)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	291 {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	292 int rval;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	293
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	294 #ifdef DEBUG_AUDIO
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	295 fprintf(stderr, "NTO_CloseAudio\n");
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	296 #endif
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	297
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	298 this->enabled = 0;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	299
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	300 if ( audio_handle != NULL ) {
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	301 if ((rval = snd_pcm_plugin_flush(audio_handle,SND_PCM_CHANNEL_PLAYBACK)) < 0){
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	302 SDL_SetError("snd_pcm_plugin_flush failed: %s\n",snd_strerror(rval));
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	303 return;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	304 }
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	305 if ((rval = snd_pcm_close(audio_handle)) < 0){
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	306 SDL_SetError("snd_pcm_close failed: %s\n",snd_strerror(rval));
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	307 return;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	308 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	309 audio_handle = NULL;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	310 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	311 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	312
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	313 static int NTO_OpenAudio(_THIS, SDL_AudioSpec *spec)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	314 {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	315 int rval;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	316 int format;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	317 Uint16 test_format;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	318 int twidth;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	319 int found;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	320
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	321 #ifdef DEBUG_AUDIO
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	322 fprintf(stderr, "NTO_OpenAudio\n");
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	323 #endif
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	324
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	325 audio_handle = NULL;
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	326 this->enabled = 0;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	327
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	328 if ( pcm_buf != NULL ) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	329 free((Uint8 *)pcm_buf);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	330 pcm_buf = NULL;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	331 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	332
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	333 /* initialize channel transfer parameters to default */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	334 init_pcm_cparams(&cparams);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	335
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	336 /* Open the audio device */
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	337 rval = snd_pcm_open_preferred(&audio_handle, NULL, NULL, OPEN_FLAGS);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	338 if ( rval < 0 ) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	339 SDL_SetError("snd_pcm_open failed: %s\n", snd_strerror(rval));
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	340 return(-1);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	341 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	342
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	343 /* enable count status parameter */
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	344 if ((rval = snd_pcm_plugin_set_disable(audio_handle, PLUGIN_DISABLE_MMAP))<0){
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	345 SDL_SetError("snd_pcm_plugin_set_disable failed: %s\n", snd_strerror(rval));
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	346 return(-1);
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	347 }
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	348
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	349 /* Try for a closest match on audio format */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	350 format = 0;
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	351 found = 0; /* can't use format as SND_PCM_SFMT_U8 = 0 in nto */
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	352 for ( test_format = SDL_FirstAudioFormat(spec->format); !found ; )
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	353 {
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	354 #ifdef DEBUG_AUDIO
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	355 fprintf(stderr, "Trying format 0x%4.4x spec->samples %d\n", test_format,spec->samples);
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	356 #endif
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	357
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	358 /* if match found set format to equivalent ALSA format */
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	359 switch ( test_format ) {
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	360 case AUDIO_U8:
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	361 format = SND_PCM_SFMT_U8;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	362 found = 1;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	363 break;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	364 case AUDIO_S8:
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	365 format = SND_PCM_SFMT_S8;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	366 found = 1;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	367 break;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	368 case AUDIO_S16LSB:
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	369 format = SND_PCM_SFMT_S16_LE;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	370 found = 1;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	371 break;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	372 case AUDIO_S16MSB:
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	373 format = SND_PCM_SFMT_S16_BE;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	374 found = 1;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	375 break;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	376 case AUDIO_U16LSB:
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	377 format = SND_PCM_SFMT_U16_LE;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	378 found = 1;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	379 break;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	380 case AUDIO_U16MSB:
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	381 format = SND_PCM_SFMT_U16_BE;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	382 found = 1;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	383 break;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	384 default:
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	385 break;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	386 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	387 if ( ! found ) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	388 test_format = SDL_NextAudioFormat();
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	389 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	390 }
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	391
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	392 /* assumes test_format not 0 on success */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	393 if ( test_format == 0 ) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	394 SDL_SetError("Couldn't find any hardware audio formats");
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	395 return(-1);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	396 }
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	397
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	398 spec->format = test_format;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	399
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	400 /* Set the audio format */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	401 cparams.format.format = format;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	402
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	403 /* Set mono or stereo audio (currently only two channels supported) */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	404 cparams.format.voices = spec->channels;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	405
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	406 #ifdef DEBUG_AUDIO
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	407 fprintf(stderr,"intializing channels %d\n", cparams.format.voices);
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	408 #endif
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	409
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	410 /* Set rate */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	411 cparams.format.rate = spec->freq ;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	412
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	413 /* Setup the transfer parameters according to cparams */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	414 rval = snd_pcm_plugin_params(audio_handle, &cparams);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	415 if (rval < 0) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	416 SDL_SetError("snd_pcm_channel_params failed: %s\n", snd_strerror (rval));
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	417 return(-1);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	418 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: 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 /* Make sure channel is setup right one last time */
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	421 memset( &csetup, 0, sizeof( csetup ) );
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	422 csetup.channel = SND_PCM_CHANNEL_PLAYBACK;
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	423 if ( snd_pcm_plugin_setup( audio_handle, &csetup ) < 0 )
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	424 {
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	425 SDL_SetError("Unable to setup playback channel\n" );
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	426 return(-1);
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	427 }
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	428 else
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	429 {
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	430 #ifdef DEBUG_AUDIO
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	431 fprintf(stderr,"requested format: %d\n",cparams.format.format);
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	432 fprintf(stderr,"requested frag size: %d\n",cparams.buf.block.frag_size);
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	433 fprintf(stderr,"requested max frags: %d\n\n",cparams.buf.block.frags_max);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	434
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	435 fprintf(stderr,"real format: %d\n", csetup.format.format );
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	436 fprintf(stderr,"real frag size : %d\n", csetup.buf.block.frag_size );
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	437 fprintf(stderr,"real max frags : %d\n", csetup.buf.block.frags_max );
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	438 #endif
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	439 }
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	440
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	441 /*
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	442 Allocate memory to the audio buffer and initialize with silence (Note that
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	443 buffer size must be a multiple of fragment size, so find closest multiple)
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	444 */
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	445
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	446 twidth = snd_pcm_format_width(format);
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	447 if (twidth < 0) {
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	448 printf("snd_pcm_format_width failed\n");
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	449 twidth = 0;
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	450 }
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	451
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	452 #ifdef DEBUG_AUDIO
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	453 fprintf(stderr,"format is %d bits wide\n",twidth);
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	454 #endif
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	455
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	456 pcm_len = spec->size ;
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	457
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	458 #ifdef DEBUG_AUDIO
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	459 fprintf(stderr,"pcm_len set to %d\n", pcm_len);
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	460 #endif
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	461
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	462 if (pcm_len == 0){
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	463 pcm_len = csetup.buf.block.frag_size;
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	464 }
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	465
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	466 pcm_buf = (Uint8*)malloc(pcm_len);
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	467 if (pcm_buf == NULL) {
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	468 SDL_SetError("pcm_buf malloc failed\n");
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	469 return(-1);
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	470 }
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	471 memset(pcm_buf,spec->silence,pcm_len);
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	472
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	473 #ifdef DEBUG_AUDIO
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	474 fprintf(stderr,"pcm_buf malloced and silenced.\n");
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	475 #endif
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	476
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	477 /* get the file descriptor */
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	478 if( (audio_fd = snd_pcm_file_descriptor(audio_handle, SND_PCM_CHANNEL_PLAYBACK)) < 0){
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	479 fprintf(stderr, "snd_pcm_file_descriptor failed with error code: %d\n", audio_fd);
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	480 }
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	481
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	482 /* Trigger audio playback */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	483 rval = snd_pcm_plugin_prepare( audio_handle, SND_PCM_CHANNEL_PLAYBACK);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	484 if (rval < 0) {
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	485 SDL_SetError("snd_pcm_plugin_prepare failed: %s\n", snd_strerror (rval));
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	486 return(-1);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	487 }
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	488
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	489 this->enabled = 1;
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	490
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	491 /* Get the parent process id (we're the parent of the audio thread) */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	492 parent = getpid();
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	493
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	494 /* We're ready to rock and roll. :-) */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	495 return(0);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	496 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	497

Mercurial > sdl-ios-xcode

annotate src/audio/nto/SDL_nto_audio.c @ 418:337f3ec4c385