sdl-ios-xcode: src/audio/nas/SDL

annotate src/audio/nas/SDL_nasaudio.c @ 4241:d3a210342761 SDL-1.2

Fixed crash with right side up BMP files

author	Sam Lantinga <slouken@libsdl.org>
date	Sat, 26 Sep 2009 06:01:27 +0000
parents	2f5e884f0a9d
children

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
4159 a1b03ba2fcd0 Updated copyright date Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	3 Copyright (C) 1997-2009 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
1312 c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges) Sam Lantinga <slouken@libsdl.org> parents: 769 diff changeset	6 modify it under the terms of the GNU Lesser General Public
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	7 License as published by the Free Software Foundation; either
1312 c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges) Sam Lantinga <slouken@libsdl.org> parents: 769 diff changeset	8 version 2.1 of the License, or (at your option) any later version.
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 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
1312 c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges) Sam Lantinga <slouken@libsdl.org> parents: 769 diff changeset	13 Lesser General Public License for more details.
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	14
1312 c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges) Sam Lantinga <slouken@libsdl.org> parents: 769 diff changeset	15 You should have received a copy of the GNU Lesser General Public
c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges) Sam Lantinga <slouken@libsdl.org> parents: 769 diff changeset	16 License along with this library; if not, write to the Free Software
c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges) Sam Lantinga <slouken@libsdl.org> parents: 769 diff changeset	17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
0 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 This driver was written by:
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	23 Erik Inge Bols�
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	24 knan@mo.himolde.no
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	25 */
1402 d910939febfa Use consistent identifiers for the various platforms we support. Sam Lantinga <slouken@libsdl.org> parents: 1361 diff changeset	26 #include "SDL_config.h"
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	27
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	28 /* Allow access to a raw mixing buffer */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	29
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	30 #include <signal.h>
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	31 #include <unistd.h>
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	32
1358 c71e05b4dc2e More header massaging... works great on Windows. ;-) Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	33 #include "SDL_timer.h"
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	34 #include "SDL_audio.h"
1361 19418e4422cb New configure-based build system. Still work in progress, but much improved Sam Lantinga <slouken@libsdl.org> parents: 1358 diff changeset	35 #include "../SDL_audiomem.h"
19418e4422cb New configure-based build system. Still work in progress, but much improved Sam Lantinga <slouken@libsdl.org> parents: 1358 diff changeset	36 #include "../SDL_audio_c.h"
19418e4422cb New configure-based build system. Still work in progress, but much improved Sam Lantinga <slouken@libsdl.org> parents: 1358 diff changeset	37 #include "../SDL_audiodev_c.h"
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	38 #include "SDL_nasaudio.h"
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	39
4192 2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	40 #ifdef SDL_AUDIO_DRIVER_NAS_DYNAMIC
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	41 #include "SDL_loadso.h"
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	42 #endif
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	43
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	44 /* The tag name used by artsc audio */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	45 #define NAS_DRIVER_NAME "nas"
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	46
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	47 static struct SDL_PrivateAudioData *this2 = NULL;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	48
4192 2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	49 static void (NAS_AuCloseServer) (AuServer );
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	50 static void (NAS_AuNextEvent) (AuServer , AuBool, AuEvent *);
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	51 static AuBool(NAS_AuDispatchEvent) (AuServer , AuEvent *);
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	52 static AuFlowID(NAS_AuCreateFlow) (AuServer , AuStatus *);
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	53 static void (NAS_AuStartFlow) (AuServer , AuFlowID, AuStatus *);
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	54 static void (*NAS_AuSetElements)
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	55 (AuServer , AuFlowID, AuBool, int, AuElement , AuStatus *);
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	56 static void (*NAS_AuWriteElement)
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	57 (AuServer , AuFlowID, int, AuUint32, AuPointer, AuBool, AuStatus );
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	58 static AuServer (NAS_AuOpenServer)
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	59 (_AuConst char , int, _AuConst char , int, _AuConst char , char *);
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	60 static AuEventHandlerRec (NAS_AuRegisterEventHandler)
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	61 (AuServer *, AuMask, int, AuID, AuEventHandlerCallback, AuPointer);
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	62
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	63
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	64 #ifdef SDL_AUDIO_DRIVER_NAS_DYNAMIC
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	65
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	66 static const char *nas_library = SDL_AUDIO_DRIVER_NAS_DYNAMIC;
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	67 static void *nas_handle = NULL;
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	68
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	69 static int
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	70 load_nas_sym(const char fn, void *addr)
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	71 {
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	72 *addr = SDL_LoadFunction(nas_handle, fn);
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	73 if (*addr == NULL) {
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	74 return 0;
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	75 }
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	76 return 1;
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	77 }
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	78
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	79 /* cast funcs to char* first, to please GCC's strict aliasing rules. */
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	80 #define SDL_NAS_SYM(x) \
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	81 if (!load_nas_sym(#x, (void *) (char ) &NAS_##x)) return -1
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	82 #else
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	83 #define SDL_NAS_SYM(x) NAS_##x = x
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	84 #endif
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	85
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	86 static int
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	87 load_nas_syms(void)
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	88 {
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	89 SDL_NAS_SYM(AuCloseServer);
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	90 SDL_NAS_SYM(AuNextEvent);
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	91 SDL_NAS_SYM(AuDispatchEvent);
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	92 SDL_NAS_SYM(AuCreateFlow);
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	93 SDL_NAS_SYM(AuStartFlow);
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	94 SDL_NAS_SYM(AuSetElements);
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	95 SDL_NAS_SYM(AuWriteElement);
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	96 SDL_NAS_SYM(AuOpenServer);
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	97 SDL_NAS_SYM(AuRegisterEventHandler);
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	98 return 0;
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	99 }
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	100
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	101 #undef SDL_NAS_SYM
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	102
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	103 #ifdef SDL_AUDIO_DRIVER_NAS_DYNAMIC
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	104
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	105 static void
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	106 UnloadNASLibrary(void)
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	107 {
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	108 if (nas_handle != NULL) {
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	109 SDL_UnloadObject(nas_handle);
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	110 nas_handle = NULL;
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	111 }
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	112 }
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	113
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	114 static int
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	115 LoadNASLibrary(void)
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	116 {
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	117 int retval = 0;
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	118 if (nas_handle == NULL) {
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	119 nas_handle = SDL_LoadObject(nas_library);
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	120 if (nas_handle == NULL) {
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	121 /* Copy error string so we can use it in a new SDL_SetError(). */
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	122 char *origerr = SDL_GetError();
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	123 size_t len = SDL_strlen(origerr) + 1;
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	124 char err = (char ) alloca(len);
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	125 SDL_strlcpy(err, origerr, len);
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	126 retval = -1;
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	127 SDL_SetError("NAS: SDL_LoadObject('%s') failed: %s\n",
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	128 nas_library, err);
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	129 } else {
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	130 retval = load_nas_syms();
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	131 if (retval < 0) {
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	132 UnloadNASLibrary();
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	133 }
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	134 }
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	135 }
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	136 return retval;
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	137 }
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	138
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	139 #else
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	140
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	141 static void
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	142 UnloadNASLibrary(void)
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	143 {
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	144 }
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	145
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	146 static int
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	147 LoadNASLibrary(void)
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	148 {
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	149 load_nas_syms();
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	150 return 0;
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	151 }
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	152
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	153 #endif /* SDL_AUDIO_DRIVER_NAS_DYNAMIC */
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	154
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	155
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	156 /* Audio driver functions */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	157 static int NAS_OpenAudio(_THIS, SDL_AudioSpec *spec);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	158 static void NAS_WaitAudio(_THIS);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	159 static void NAS_PlayAudio(_THIS);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	160 static Uint8 *NAS_GetAudioBuf(_THIS);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	161 static void NAS_CloseAudio(_THIS);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	162
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	163 /* Audio driver bootstrap functions */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	164
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	165 static int Audio_Available(void)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	166 {
4192 2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	167 if (LoadNASLibrary() == 0) {
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	168 AuServer *aud = NAS_AuOpenServer("", 0, NULL, 0, NULL, NULL);
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	169 if (!aud) {
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	170 UnloadNASLibrary();
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	171 return 0;
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	172 }
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	173 NAS_AuCloseServer(aud);
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	174 UnloadNASLibrary();
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	175 return 1;
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	176 }
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	177 return 0;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	178 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	179
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	180 static void Audio_DeleteDevice(SDL_AudioDevice *device)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	181 {
4192 2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	182 UnloadNASLibrary();
1336 3692456e7b0f Use SDL_ prefixed versions of C library functions. Sam Lantinga <slouken@libsdl.org> parents: 1312 diff changeset	183 SDL_free(device->hidden);
3692456e7b0f Use SDL_ prefixed versions of C library functions. Sam Lantinga <slouken@libsdl.org> parents: 1312 diff changeset	184 SDL_free(device);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	185 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	186
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	187 static SDL_AudioDevice *Audio_CreateDevice(int devindex)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	188 {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	189 SDL_AudioDevice *this;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	190
4192 2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	191 if (LoadNASLibrary() < 0) {
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	192 return NULL;
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	193 }
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	194
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	195 /* Initialize all variables that we clean on shutdown */
1336 3692456e7b0f Use SDL_ prefixed versions of C library functions. Sam Lantinga <slouken@libsdl.org> parents: 1312 diff changeset	196 this = (SDL_AudioDevice *)SDL_malloc(sizeof(SDL_AudioDevice));
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	197 if ( this ) {
1336 3692456e7b0f Use SDL_ prefixed versions of C library functions. Sam Lantinga <slouken@libsdl.org> parents: 1312 diff changeset	198 SDL_memset(this, 0, (sizeof *this));
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	199 this->hidden = (struct SDL_PrivateAudioData *)
1336 3692456e7b0f Use SDL_ prefixed versions of C library functions. Sam Lantinga <slouken@libsdl.org> parents: 1312 diff changeset	200 SDL_malloc((sizeof *this->hidden));
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	201 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	202 if ( (this == NULL) \|\| (this->hidden == NULL) ) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	203 SDL_OutOfMemory();
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	204 if ( this ) {
1336 3692456e7b0f Use SDL_ prefixed versions of C library functions. Sam Lantinga <slouken@libsdl.org> parents: 1312 diff changeset	205 SDL_free(this);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	206 }
4192 2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	207 return NULL;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	208 }
1336 3692456e7b0f Use SDL_ prefixed versions of C library functions. Sam Lantinga <slouken@libsdl.org> parents: 1312 diff changeset	209 SDL_memset(this->hidden, 0, (sizeof *this->hidden));
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	210
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	211 /* Set the function pointers */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	212 this->OpenAudio = NAS_OpenAudio;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	213 this->WaitAudio = NAS_WaitAudio;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	214 this->PlayAudio = NAS_PlayAudio;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	215 this->GetAudioBuf = NAS_GetAudioBuf;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	216 this->CloseAudio = NAS_CloseAudio;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	217
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	218 this->free = Audio_DeleteDevice;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	219
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	220 return this;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	221 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	222
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	223 AudioBootStrap NAS_bootstrap = {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	224 NAS_DRIVER_NAME, "Network Audio System",
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	225 Audio_Available, Audio_CreateDevice
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	226 };
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	227
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	228 /* This function waits until it is possible to write a full sound buffer */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	229 static void NAS_WaitAudio(_THIS)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	230 {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	231 while ( this->hidden->buf_free < this->hidden->mixlen ) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	232 AuEvent ev;
4192 2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	233 NAS_AuNextEvent(this->hidden->aud, AuTrue, &ev);
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	234 NAS_AuDispatchEvent(this->hidden->aud, &ev);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	235 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	236 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	237
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	238 static void NAS_PlayAudio(_THIS)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	239 {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	240 while (this->hidden->mixlen > this->hidden->buf_free) { /* We think the buffer is full? Yikes! Ask the server for events,
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	241 in the hope that some of them is LowWater events telling us more
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	242 of the buffer is free now than what we think. */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	243 AuEvent ev;
4192 2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	244 NAS_AuNextEvent(this->hidden->aud, AuTrue, &ev);
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	245 NAS_AuDispatchEvent(this->hidden->aud, &ev);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	246 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	247 this->hidden->buf_free -= this->hidden->mixlen;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	248
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	249 /* Write the audio data */
4192 2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	250 NAS_AuWriteElement(this->hidden->aud, this->hidden->flow, 0, this->hidden->mixlen, this->hidden->mixbuf, AuFalse, NULL);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	251
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	252 this->hidden->written += this->hidden->mixlen;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	253
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	254 #ifdef DEBUG_AUDIO
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	255 fprintf(stderr, "Wrote %d bytes of audio data\n", this->hidden->mixlen);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	256 #endif
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 static Uint8 *NAS_GetAudioBuf(_THIS)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	260 {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	261 return(this->hidden->mixbuf);
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 static void NAS_CloseAudio(_THIS)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	265 {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	266 if ( this->hidden->mixbuf != NULL ) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	267 SDL_FreeAudioMem(this->hidden->mixbuf);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	268 this->hidden->mixbuf = NULL;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	269 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	270 if ( this->hidden->aud ) {
4192 2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	271 NAS_AuCloseServer(this->hidden->aud);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	272 this->hidden->aud = 0;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	273 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	274 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	275
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	276 static unsigned char sdlformat_to_auformat(unsigned int fmt)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	277 {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	278 switch (fmt)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	279 {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	280 case AUDIO_U8:
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	281 return AuFormatLinearUnsigned8;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	282 case AUDIO_S8:
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	283 return AuFormatLinearSigned8;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	284 case AUDIO_U16LSB:
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	285 return AuFormatLinearUnsigned16LSB;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	286 case AUDIO_U16MSB:
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	287 return AuFormatLinearUnsigned16MSB;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	288 case AUDIO_S16LSB:
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	289 return AuFormatLinearSigned16LSB;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	290 case AUDIO_S16MSB:
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	291 return AuFormatLinearSigned16MSB;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	292 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	293 return AuNone;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	294 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	295
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	296 static AuBool
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	297 event_handler(AuServer* aud, AuEvent* ev, AuEventHandlerRec* hnd)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	298 {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	299 switch (ev->type) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	300 case AuEventTypeElementNotify: {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	301 AuElementNotifyEvent* event = (AuElementNotifyEvent *)ev;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	302
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	303 switch (event->kind) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	304 case AuElementNotifyKindLowWater:
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	305 if (this2->buf_free >= 0) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	306 this2->really += event->num_bytes;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	307 gettimeofday(&this2->last_tv, 0);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	308 this2->buf_free += event->num_bytes;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	309 } else {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	310 this2->buf_free = event->num_bytes;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	311 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	312 break;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	313 case AuElementNotifyKindState:
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	314 switch (event->cur_state) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	315 case AuStatePause:
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	316 if (event->reason != AuReasonUser) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	317 if (this2->buf_free >= 0) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	318 this2->really += event->num_bytes;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	319 gettimeofday(&this2->last_tv, 0);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	320 this2->buf_free += event->num_bytes;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	321 } else {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	322 this2->buf_free = event->num_bytes;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	323 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	324 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	325 break;
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 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	329 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	330 return AuTrue;
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 static AuDeviceID
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	334 find_device(_THIS, int nch)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	335 {
4192 2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	336 /* These "Au" things are all macros, not functions... */
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	337 int i;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	338 for (i = 0; i < AuServerNumDevices(this->hidden->aud); i++) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	339 if ((AuDeviceKind(AuServerDevice(this->hidden->aud, i)) ==
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	340 AuComponentKindPhysicalOutput) &&
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	341 AuDeviceNumTracks(AuServerDevice(this->hidden->aud, i)) == nch) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	342 return AuDeviceIdentifier(AuServerDevice(this->hidden->aud, i));
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	343 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	344 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	345 return AuNone;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	346 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	347
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	348 static int NAS_OpenAudio(_THIS, SDL_AudioSpec *spec)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	349 {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	350 AuElement elms[3];
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	351 int buffer_size;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	352 Uint16 test_format, format;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	353
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	354 this->hidden->mixbuf = NULL;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	355
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	356 /* Try for a closest match on audio format */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	357 format = 0;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	358 for ( test_format = SDL_FirstAudioFormat(spec->format);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	359 ! format && test_format; ) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	360 format = sdlformat_to_auformat(test_format);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	361
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	362 if (format == AuNone) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	363 test_format = SDL_NextAudioFormat();
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	364 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	365 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	366 if ( format == 0 ) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	367 SDL_SetError("Couldn't find any hardware audio formats");
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	368 return(-1);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	369 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	370 spec->format = test_format;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	371
4192 2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	372 this->hidden->aud = NAS_AuOpenServer("", 0, NULL, 0, NULL, NULL);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	373 if (this->hidden->aud == 0)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	374 {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	375 SDL_SetError("Couldn't open connection to NAS server");
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	376 return (-1);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	377 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	378
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	379 this->hidden->dev = find_device(this, spec->channels);
4192 2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	380 if ((this->hidden->dev == AuNone) \|\| (!(this->hidden->flow = NAS_AuCreateFlow(this->hidden->aud, NULL)))) {
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	381 NAS_AuCloseServer(this->hidden->aud);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	382 this->hidden->aud = 0;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	383 SDL_SetError("Couldn't find a fitting playback device on NAS server");
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	384 return (-1);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	385 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	386
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	387 buffer_size = spec->freq;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	388 if (buffer_size < 4096)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	389 buffer_size = 4096;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	390
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	391 if (buffer_size > 32768)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	392 buffer_size = 32768; /* So that the buffer won't get unmanageably big. */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	393
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	394 /* Calculate the final parameters for this audio specification */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	395 SDL_CalculateAudioSpec(spec);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	396
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	397 this2 = this->hidden;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	398
4192 2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	399 /* These "Au" things without a NAS_ prefix are macros, not functions... */
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	400 AuMakeElementImportClient(elms, spec->freq, format, spec->channels, AuTrue,
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	401 buffer_size, buffer_size / 4, 0, NULL);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	402 AuMakeElementExportDevice(elms+1, 0, this->hidden->dev, spec->freq,
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	403 AuUnlimitedSamples, 0, NULL);
4192 2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	404 NAS_AuSetElements(this->hidden->aud, this->hidden->flow, AuTrue, 2, elms, NULL);
2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	405 NAS_AuRegisterEventHandler(this->hidden->aud, AuEventHandlerIDMask, 0, this->hidden->flow,
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	406 event_handler, (AuPointer) NULL);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	407
4192 2f5e884f0a9d Made NAS target dynamic, so you can safely include it in shipping binaries. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	408 NAS_AuStartFlow(this->hidden->aud, this->hidden->flow, NULL);
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 /* Allocate mixing buffer */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	411 this->hidden->mixlen = spec->size;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	412 this->hidden->mixbuf = (Uint8 *)SDL_AllocAudioMem(this->hidden->mixlen);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	413 if ( this->hidden->mixbuf == NULL ) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	414 return(-1);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	415 }
1336 3692456e7b0f Use SDL_ prefixed versions of C library functions. Sam Lantinga <slouken@libsdl.org> parents: 1312 diff changeset	416 SDL_memset(this->hidden->mixbuf, spec->silence, spec->size);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	417
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	418 /* Get the parent process id (we're the parent of the audio thread) */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	419 this->hidden->parent = getpid();
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	420
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	421 /* We're ready to rock and roll. :-) */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	422 return(0);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	423 }

Mercurial > sdl-ios-xcode

annotate src/audio/nas/SDL_nasaudio.c @ 4241:d3a210342761 SDL-1.2