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

annotate src/audio/nto/SDL_nto_audio.c @ 424:b82518082828

*** empty log message ***

author	Sam Lantinga <slouken@libsdl.org>
date	Wed, 10 Jul 2002 17:10:46 +0000
parents	337f3ec4c385
children	8bedd6d61642

rev	line source
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	1 /*
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	2 SDL - Simple DirectMedia Layer
297 f6ffac90895c Updated copyright information for 2002 Sam Lantinga <slouken@libsdl.org> parents: 283 diff changeset	3 Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 Sam Lantinga
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	4
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	5 This library is free software; you can redistribute it and/or
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	6 modify it under the terms of the GNU Library General Public
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	7 License as published by the Free Software Foundation; either
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	8 version 2 of the License, or (at your option) any later version.
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 distributed in the hope that it will be useful,
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	11 but WITHOUT ANY WARRANTY; without even the implied warranty of
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	13 Library General Public License for more details.
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	14
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	15 You should have received a copy of the GNU Library General Public
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	16 License along with this library; if not, write to the Free
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	18
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	19 Sam Lantinga
252 e8157fcb3114 Updated the source with the correct e-mail address Sam Lantinga <slouken@libsdl.org> parents: 0 diff changeset	20 slouken@libsdl.org
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	21 */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	22
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	23 #include <stdlib.h>
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	24 #include <stdio.h>
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	25 #include <string.h>
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	26 #include <errno.h>
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	27 #include <unistd.h>
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	28 #include <fcntl.h>
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	29 #include <signal.h>
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	30 #include <sys/types.h>
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	31 #include <sys/time.h>
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	32 #include <sched.h>
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	33 #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	34 #include <sys/select.h>
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	35
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	36 #include "SDL_audio.h"
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	37 #include "SDL_error.h"
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	38 #include "SDL_audiomem.h"
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	39 #include "SDL_audio_c.h"
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	40 #include "SDL_timer.h"
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	41 #include "SDL_nto_audio.h"
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	42
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	43 /* The tag name used by NTO audio */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	44 #define DRIVER_NAME "nto"
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	45
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	46 /* default channel communication parameters */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	47 #define DEFAULT_CPARAMS_RATE 22050
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	48 #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	49 #define DEFAULT_CPARAMS_FRAG_SIZE 4096
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	50 #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	51 #define DEFAULT_CPARAMS_FRAGS_MAX 1
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	52
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	53 /* 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	54 #define OPEN_FLAGS SND_PCM_OPEN_PLAYBACK
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	55
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	56 /* Audio driver functions */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	57 static int NTO_OpenAudio(_THIS, SDL_AudioSpec *spec);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	58 static void NTO_WaitAudio(_THIS);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	59 static void NTO_PlayAudio(_THIS);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	60 static Uint8 *NTO_GetAudioBuf(_THIS);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	61 static void NTO_CloseAudio(_THIS);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	62
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	63 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	64 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	65 static snd_pcm_channel_setup_t csetup;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	66
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	67 /* PCM transfer channel parameters initialize function */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	68 static void init_pcm_cparams(snd_pcm_channel_params_t* cparams)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	69 {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	70 memset(cparams,0,sizeof(snd_pcm_channel_params_t));
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	71
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	72 cparams->channel = SND_PCM_CHANNEL_PLAYBACK;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	73 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	74 cparams->start_mode = SND_PCM_START_DATA;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	75 cparams->stop_mode = SND_PCM_STOP_STOP;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	76 cparams->format.format = SND_PCM_SFMT_S16_LE;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	77 cparams->format.interleave = 1;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	78 cparams->format.rate = DEFAULT_CPARAMS_RATE;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	79 cparams->format.voices = DEFAULT_CPARAMS_VOICES;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	80 cparams->buf.block.frag_size = DEFAULT_CPARAMS_FRAG_SIZE;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	81 cparams->buf.block.frags_min = DEFAULT_CPARAMS_FRAGS_MIN;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	82 cparams->buf.block.frags_max = DEFAULT_CPARAMS_FRAGS_MAX;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	83 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	84
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	85 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	86 {
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	87 /*
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	88 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	89 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	90 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	91 */
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	92
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	93 int available;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	94 int rval;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	95 snd_pcm_t *handle;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	96
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	97 available = 0;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	98 handle = NULL;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	99
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	100 rval = snd_pcm_open_preferred(&handle, NULL, NULL, OPEN_FLAGS);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	101
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	102 if (rval >= 0){
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	103 available = 1;
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	104
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	105 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	106 SDL_SetError("snd_pcm_close failed: %s\n",snd_strerror(rval));
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	107 available = 0;
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	108 }
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	109 }
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	110 else{
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_open failed: %s\n", snd_strerror(rval));
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	112 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	113
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	114 #ifdef DEBUG_AUDIO
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	115 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	116 #endif
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	117
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	118 return(available);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	119 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	120
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	121 static void Audio_DeleteDevice(SDL_AudioDevice *device)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	122 {
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	123 #ifdef DEBUG_AUDIO
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	124 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	125 #endif
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	126
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	127 free(device->hidden);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	128 free(device);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	129 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	130
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	131 static SDL_AudioDevice *Audio_CreateDevice(int devindex)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	132 {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	133 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	134 #ifdef DEBUG_AUDIO
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	135 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	136 #endif
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	137 /* Initialize all variables that we clean on shutdown */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	138 this = (SDL_AudioDevice *)malloc(sizeof(SDL_AudioDevice));
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	139 if ( this ) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	140 memset(this, 0, (sizeof *this));
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	141 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	142 malloc((sizeof *this->hidden));
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	143 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	144 if ( (this == NULL) \|\| (this->hidden == NULL) ) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	145 SDL_OutOfMemory();
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	146 if ( this ) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	147 free(this);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	148 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	149 return(0);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	150 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	151 memset(this->hidden, 0, (sizeof *this->hidden));
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	152 audio_handle = NULL;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	153
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	154 /* Set the function pointers */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	155 this->OpenAudio = NTO_OpenAudio;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	156 this->WaitAudio = NTO_WaitAudio;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	157 this->PlayAudio = NTO_PlayAudio;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	158 this->GetAudioBuf = NTO_GetAudioBuf;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	159 this->CloseAudio = NTO_CloseAudio;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	160
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	161 this->free = Audio_DeleteDevice;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	162
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	163 return this;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	164 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	165
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	166 /* 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	167 AudioBootStrap ALSA_bootstrap = {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	168 DRIVER_NAME, "Neutrino PCM audio",
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	169 Audio_Available, Audio_CreateDevice
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	170 };
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	171
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	172 /* This function waits until it is possible to write a full sound buffer */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	173 static void NTO_WaitAudio(_THIS)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	174 {
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	175 fd_set wfds;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	176
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	177 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	178 switch( select( audio_fd + 1, NULL, &wfds, NULL, NULL ) )
0 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 case -1:
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	181 case 0:
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	182 /* Error */
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	183 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	184 break;
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	185 default:
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	186 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	187 return;
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	188 }
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	189 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	190
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	191 static void NTO_PlayAudio(_THIS)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	192 {
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	193 int written, rval;
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	194 int towrite;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	195
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	196 #ifdef DEBUG_AUDIO
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	197 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	198 #endif
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	199
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	200 if( !this->enabled){
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	201 return;
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	202 }
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	203
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	204 towrite = pcm_len;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	205
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	206 /* 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	207 do {
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	208 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	209 #ifdef DEBUG_AUDIO
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	210 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	211 #endif
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	212 if (written != towrite){
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	213 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	214 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	215 #ifdef DEBUG_AUDIO
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	216 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	217 #endif
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	218 towrite -= written; //we wrote some data
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	219 continue;
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	220 }
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	221 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	222 if(errno == EIO){
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	223 #ifdef DEBUG_AUDIO
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	224 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	225 #endif
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	226 }
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	227 if(errno == EINVAL){
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 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	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
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	233 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	234 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	235 #ifdef DEBUG_AUDIO
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	236 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	237 #endif
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	238 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	239 return;
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	240 }
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	241
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	242 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	243 #ifdef DEBUG_AUDIO
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	244 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	245 #endif
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	246 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	247 #ifdef DEBUG_AUDIO
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	248 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	249 #endif
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	250 SDL_SetError("snd_pcm_plugin_prepare failed: %s\n",snd_strerror(rval) );
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	251 return;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	252 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	253 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	254 continue;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	255 }
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	256 else{
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	257 #ifdef DEBUG_AUDIO
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	258 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	259 #endif
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	260 return;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	261 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	262
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	263 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	264 else
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	265 {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	266 towrite -= written; //we wrote all remaining data
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	267 }
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	268 } while ( (towrite > 0) && (this->enabled) );
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	269
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	270 /* 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	271 if ( towrite != 0 ) {
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	272 this->enabled = 0;
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	273 }
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	274 return;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	275 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	276
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	277 static Uint8 *NTO_GetAudioBuf(_THIS)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	278 {
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	279 #ifdef DEBUG_AUDIO
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	280 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	281 #endif
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	282 return(pcm_buf);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	283 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	284
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	285 static void NTO_CloseAudio(_THIS)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	286 {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	287 int rval;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	288
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	289 #ifdef DEBUG_AUDIO
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	290 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	291 #endif
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	292
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	293 this->enabled = 0;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	294
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	295 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	296 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	297 SDL_SetError("snd_pcm_plugin_flush failed: %s\n",snd_strerror(rval));
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	298 return;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	299 }
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	300 if ((rval = snd_pcm_close(audio_handle)) < 0){
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	301 SDL_SetError("snd_pcm_close failed: %s\n",snd_strerror(rval));
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	302 return;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	303 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	304 audio_handle = NULL;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	305 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	306 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	307
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	308 static int NTO_OpenAudio(_THIS, SDL_AudioSpec *spec)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	309 {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	310 int rval;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	311 int format;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	312 Uint16 test_format;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	313 int twidth;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	314 int found;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	315
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	316 #ifdef DEBUG_AUDIO
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	317 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	318 #endif
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	319
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	320 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	321 this->enabled = 0;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	322
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	323 if ( pcm_buf != NULL ) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	324 free((Uint8 *)pcm_buf);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	325 pcm_buf = NULL;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	326 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	327
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	328 /* initialize channel transfer parameters to default */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	329 init_pcm_cparams(&cparams);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	330
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	331 /* 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	332 rval = snd_pcm_open_preferred(&audio_handle, NULL, NULL, OPEN_FLAGS);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	333 if ( rval < 0 ) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	334 SDL_SetError("snd_pcm_open failed: %s\n", snd_strerror(rval));
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	335 return(-1);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	336 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	337
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	338 /* 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	339 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	340 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	341 return(-1);
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	342 }
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	343
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	344 /* Try for a closest match on audio format */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	345 format = 0;
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	346 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	347 for ( test_format = SDL_FirstAudioFormat(spec->format); !found ; )
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	348 {
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	349 #ifdef DEBUG_AUDIO
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	350 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	351 #endif
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	352
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	353 /* 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	354 switch ( test_format ) {
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	355 case AUDIO_U8:
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	356 format = SND_PCM_SFMT_U8;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	357 found = 1;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	358 break;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	359 case AUDIO_S8:
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	360 format = SND_PCM_SFMT_S8;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	361 found = 1;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	362 break;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	363 case AUDIO_S16LSB:
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	364 format = SND_PCM_SFMT_S16_LE;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	365 found = 1;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	366 break;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	367 case AUDIO_S16MSB:
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	368 format = SND_PCM_SFMT_S16_BE;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	369 found = 1;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	370 break;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	371 case AUDIO_U16LSB:
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	372 format = SND_PCM_SFMT_U16_LE;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	373 found = 1;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	374 break;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	375 case AUDIO_U16MSB:
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	376 format = SND_PCM_SFMT_U16_BE;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	377 found = 1;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	378 break;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	379 default:
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	380 break;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	381 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	382 if ( ! found ) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	383 test_format = SDL_NextAudioFormat();
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	384 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	385 }
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	386
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	387 /* assumes test_format not 0 on success */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	388 if ( test_format == 0 ) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	389 SDL_SetError("Couldn't find any hardware audio formats");
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	390 return(-1);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	391 }
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	392
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	393 spec->format = test_format;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	394
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	395 /* Set the audio format */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	396 cparams.format.format = format;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	397
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	398 /* Set mono or stereo audio (currently only two channels supported) */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	399 cparams.format.voices = spec->channels;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	400
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	401 #ifdef DEBUG_AUDIO
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	402 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	403 #endif
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	404
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	405 /* Set rate */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	406 cparams.format.rate = spec->freq ;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	407
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	408 /* Setup the transfer parameters according to cparams */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	409 rval = snd_pcm_plugin_params(audio_handle, &cparams);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	410 if (rval < 0) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	411 SDL_SetError("snd_pcm_channel_params failed: %s\n", snd_strerror (rval));
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	412 return(-1);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	413 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	414
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	415 /* 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	416 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	417 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	418 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	419 {
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	420 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	421 return(-1);
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	422 }
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	423 else
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 #ifdef DEBUG_AUDIO
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	426 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	427 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	428 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	429
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	430 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	431 fprintf(stderr,"real frag size : %d\n", csetup.buf.block.frag_size );
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	432 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	433 #endif
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	434 }
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	435
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	436 /*
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	437 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	438 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	439 */
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	440
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	441 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	442 if (twidth < 0) {
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	443 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	444 twidth = 0;
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
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	447 #ifdef DEBUG_AUDIO
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	448 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	449 #endif
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	450
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	451 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	452
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	453 #ifdef DEBUG_AUDIO
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	454 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	455 #endif
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	456
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	457 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	458 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	459 }
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: 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 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	462 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	463 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	464 return(-1);
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	465 }
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	466 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	467
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	468 #ifdef DEBUG_AUDIO
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	469 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	470 #endif
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	471
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	472 /* 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	473 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	474 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	475 }
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	476
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	477 /* Trigger audio playback */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	478 rval = snd_pcm_plugin_prepare( audio_handle, SND_PCM_CHANNEL_PLAYBACK);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	479 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	480 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	481 return(-1);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	482 }
418 337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	483
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	484 this->enabled = 1;
337f3ec4c385 Updated the QNX audio code for QNX 6.2 (thanks Travis!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	485
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	486 /* Get the parent process id (we're the parent of the audio thread) */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	487 parent = getpid();
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	488
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	489 /* We're ready to rock and roll. :-) */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	490 return(0);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	491 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	492

Mercurial > sdl-ios-xcode

annotate src/audio/nto/SDL_nto_audio.c @ 424:b82518082828