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

annotate src/audio/arts/SDL_artsaudio.c @ 4135:cd98d1dc385c SDL-1.2

Damien Carbery fixed bug #542 In SDL 1.2.13 sdl.m4 the AM_PATH_SDL function looks for sdl-config. It sets the PATH: PATH="$prefix/bin:$prefix/usr/bin:$PATH" but does not save the current PATH or restore the current PATH at the end. This breaks the build on Solaris because we have GNU tools in another dir (listed at the top of PATH) but non-GNU tools with the same names in $prefix/bin. Later configure tests finds the non-GNU tools and quits in error

author	Sam Lantinga <slouken@libsdl.org>
date	Thu, 24 Jan 2008 15:50:20 +0000
parents	7e878cc4250a
children	a1b03ba2fcd0

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
1312 c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges) Sam Lantinga <slouken@libsdl.org> parents: 956 diff changeset	3 Copyright (C) 1997-2006 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: 956 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: 956 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: 956 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: 956 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: 956 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: 956 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 */
1402 d910939febfa Use consistent identifiers for the various platforms we support. Sam Lantinga <slouken@libsdl.org> parents: 1379 diff changeset	22 #include "SDL_config.h"
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	23
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	24 /* Allow access to a raw mixing buffer */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	25
4015 7e878cc4250a Fixed compiler warning (gcc w/ -Wall) for using getpid() and kill() without Ryan C. Gordon <icculus@icculus.org> parents: 3959 diff changeset	26 #ifdef HAVE_SIGNAL_H
7e878cc4250a Fixed compiler warning (gcc w/ -Wall) for using getpid() and kill() without Ryan C. Gordon <icculus@icculus.org> parents: 3959 diff changeset	27 #include <signal.h>
7e878cc4250a Fixed compiler warning (gcc w/ -Wall) for using getpid() and kill() without Ryan C. Gordon <icculus@icculus.org> parents: 3959 diff changeset	28 #endif
7e878cc4250a Fixed compiler warning (gcc w/ -Wall) for using getpid() and kill() without Ryan C. Gordon <icculus@icculus.org> parents: 3959 diff changeset	29 #include <unistd.h>
7e878cc4250a Fixed compiler warning (gcc w/ -Wall) for using getpid() and kill() without Ryan C. Gordon <icculus@icculus.org> parents: 3959 diff changeset	30
1358 c71e05b4dc2e More header massaging... works great on Windows. ;-) Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	31 #include "SDL_timer.h"
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	32 #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	33 #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	34 #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	35 #include "../SDL_audiodev_c.h"
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	36 #include "SDL_artsaudio.h"
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	37
1361 19418e4422cb New configure-based build system. Still work in progress, but much improved Sam Lantinga <slouken@libsdl.org> parents: 1358 diff changeset	38 #ifdef SDL_AUDIO_DRIVER_ARTS_DYNAMIC
294 d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	39 #include "SDL_name.h"
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	40 #include "SDL_loadso.h"
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	41 #else
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	42 #define SDL_NAME(X) X
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	43 #endif
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	44
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	45 /* The tag name used by artsc audio */
1361 19418e4422cb New configure-based build system. Still work in progress, but much improved Sam Lantinga <slouken@libsdl.org> parents: 1358 diff changeset	46 #define ARTS_DRIVER_NAME "arts"
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	47
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	48 /* Audio driver functions */
1361 19418e4422cb New configure-based build system. Still work in progress, but much improved Sam Lantinga <slouken@libsdl.org> parents: 1358 diff changeset	49 static int ARTS_OpenAudio(_THIS, SDL_AudioSpec *spec);
19418e4422cb New configure-based build system. Still work in progress, but much improved Sam Lantinga <slouken@libsdl.org> parents: 1358 diff changeset	50 static void ARTS_WaitAudio(_THIS);
19418e4422cb New configure-based build system. Still work in progress, but much improved Sam Lantinga <slouken@libsdl.org> parents: 1358 diff changeset	51 static void ARTS_PlayAudio(_THIS);
19418e4422cb New configure-based build system. Still work in progress, but much improved Sam Lantinga <slouken@libsdl.org> parents: 1358 diff changeset	52 static Uint8 *ARTS_GetAudioBuf(_THIS);
19418e4422cb New configure-based build system. Still work in progress, but much improved Sam Lantinga <slouken@libsdl.org> parents: 1358 diff changeset	53 static void ARTS_CloseAudio(_THIS);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	54
1361 19418e4422cb New configure-based build system. Still work in progress, but much improved Sam Lantinga <slouken@libsdl.org> parents: 1358 diff changeset	55 #ifdef SDL_AUDIO_DRIVER_ARTS_DYNAMIC
294 d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	56
1361 19418e4422cb New configure-based build system. Still work in progress, but much improved Sam Lantinga <slouken@libsdl.org> parents: 1358 diff changeset	57 static const char *arts_library = SDL_AUDIO_DRIVER_ARTS_DYNAMIC;
294 d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	58 static void *arts_handle = NULL;
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	59 static int arts_loaded = 0;
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	60
301 fb4c4c6a2773 Fixed dynamic arts support. Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	61 static int (*SDL_NAME(arts_init))(void);
fb4c4c6a2773 Fixed dynamic arts support. Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	62 static void (*SDL_NAME(arts_free))(void);
fb4c4c6a2773 Fixed dynamic arts support. Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	63 static arts_stream_t (SDL_NAME(arts_play_stream))(int rate, int bits, int channels, const char name);
fb4c4c6a2773 Fixed dynamic arts support. Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	64 static int (*SDL_NAME(arts_stream_set))(arts_stream_t s, arts_parameter_t param, int value);
fb4c4c6a2773 Fixed dynamic arts support. Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	65 static int (*SDL_NAME(arts_stream_get))(arts_stream_t s, arts_parameter_t param);
fb4c4c6a2773 Fixed dynamic arts support. Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	66 static int (SDL_NAME(arts_write))(arts_stream_t s, const void buffer, int count);
fb4c4c6a2773 Fixed dynamic arts support. Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	67 static void (*SDL_NAME(arts_close_stream))(arts_stream_t s);
3959 33c248ea75f9 Prevent arts audio target from crashing/hanging SDL if the audio hardware Ryan C. Gordon <icculus@icculus.org> parents: 1402 diff changeset	68 static int (*SDL_NAME(arts_suspended))(void);
33c248ea75f9 Prevent arts audio target from crashing/hanging SDL if the audio hardware Ryan C. Gordon <icculus@icculus.org> parents: 1402 diff changeset	69 static const char (SDL_NAME(arts_error_text))(int errorcode);
301 fb4c4c6a2773 Fixed dynamic arts support. Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	70
294 d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	71 static struct {
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	72 const char *name;
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	73 void **func;
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	74 } arts_functions[] = {
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	75 { "arts_init", (void **)&SDL_NAME(arts_init) },
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	76 { "arts_free", (void **)&SDL_NAME(arts_free) },
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	77 { "arts_play_stream", (void **)&SDL_NAME(arts_play_stream) },
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	78 { "arts_stream_set", (void **)&SDL_NAME(arts_stream_set) },
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	79 { "arts_stream_get", (void **)&SDL_NAME(arts_stream_get) },
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	80 { "arts_write", (void **)&SDL_NAME(arts_write) },
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	81 { "arts_close_stream", (void **)&SDL_NAME(arts_close_stream) },
3959 33c248ea75f9 Prevent arts audio target from crashing/hanging SDL if the audio hardware Ryan C. Gordon <icculus@icculus.org> parents: 1402 diff changeset	82 { "arts_suspended", (void **)&SDL_NAME(arts_suspended) },
33c248ea75f9 Prevent arts audio target from crashing/hanging SDL if the audio hardware Ryan C. Gordon <icculus@icculus.org> parents: 1402 diff changeset	83 { "arts_error_text", (void **)&SDL_NAME(arts_error_text) },
294 d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	84 };
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	85
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	86 static void UnloadARTSLibrary()
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	87 {
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	88 if ( arts_loaded ) {
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	89 SDL_UnloadObject(arts_handle);
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	90 arts_handle = NULL;
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	91 arts_loaded = 0;
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	92 }
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	93 }
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	94
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	95 static int LoadARTSLibrary(void)
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	96 {
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	97 int i, retval = -1;
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	98
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	99 arts_handle = SDL_LoadObject(arts_library);
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	100 if ( arts_handle ) {
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	101 arts_loaded = 1;
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	102 retval = 0;
1379 c0a74f199ecf Use only safe string functions Sam Lantinga <slouken@libsdl.org> parents: 1361 diff changeset	103 for ( i=0; i<SDL_arraysize(arts_functions); ++i ) {
294 d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	104 *arts_functions[i].func = SDL_LoadFunction(arts_handle, arts_functions[i].name);
864 0c892e99b65b Date: Sun, 29 Feb 2004 20:28:27 +0200 Sam Lantinga <slouken@libsdl.org> parents: 769 diff changeset	105 if ( !*arts_functions[i].func ) {
294 d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	106 retval = -1;
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	107 UnloadARTSLibrary();
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	108 break;
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	109 }
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	110 }
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	111 }
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	112 return retval;
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	113 }
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	114
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	115 #else
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	116
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	117 static void UnloadARTSLibrary()
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	118 {
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	119 return;
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	120 }
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	121
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	122 static int LoadARTSLibrary(void)
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	123 {
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	124 return 0;
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	125 }
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	126
1361 19418e4422cb New configure-based build system. Still work in progress, but much improved Sam Lantinga <slouken@libsdl.org> parents: 1358 diff changeset	127 #endif /* SDL_AUDIO_DRIVER_ARTS_DYNAMIC */
294 d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	128
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	129 /* Audio driver bootstrap functions */
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 int Audio_Available(void)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	132 {
294 d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	133 int available = 0;
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	134
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	135 if ( LoadARTSLibrary() < 0 ) {
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	136 return available;
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	137 }
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	138 if ( SDL_NAME(arts_init)() == 0 ) {
3959 33c248ea75f9 Prevent arts audio target from crashing/hanging SDL if the audio hardware Ryan C. Gordon <icculus@icculus.org> parents: 1402 diff changeset	139 if ( SDL_NAME(arts_suspended)() ) {
33c248ea75f9 Prevent arts audio target from crashing/hanging SDL if the audio hardware Ryan C. Gordon <icculus@icculus.org> parents: 1402 diff changeset	140 /* Play a stream so aRts doesn't crash */
33c248ea75f9 Prevent arts audio target from crashing/hanging SDL if the audio hardware Ryan C. Gordon <icculus@icculus.org> parents: 1402 diff changeset	141 arts_stream_t stream2;
33c248ea75f9 Prevent arts audio target from crashing/hanging SDL if the audio hardware Ryan C. Gordon <icculus@icculus.org> parents: 1402 diff changeset	142 stream2=SDL_NAME(arts_play_stream)(44100, 16, 2, "SDL");
33c248ea75f9 Prevent arts audio target from crashing/hanging SDL if the audio hardware Ryan C. Gordon <icculus@icculus.org> parents: 1402 diff changeset	143 SDL_NAME(arts_write)(stream2, "", 0);
33c248ea75f9 Prevent arts audio target from crashing/hanging SDL if the audio hardware Ryan C. Gordon <icculus@icculus.org> parents: 1402 diff changeset	144 SDL_NAME(arts_close_stream)(stream2);
33c248ea75f9 Prevent arts audio target from crashing/hanging SDL if the audio hardware Ryan C. Gordon <icculus@icculus.org> parents: 1402 diff changeset	145 available = 1;
33c248ea75f9 Prevent arts audio target from crashing/hanging SDL if the audio hardware Ryan C. Gordon <icculus@icculus.org> parents: 1402 diff changeset	146 }
294 d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	147 SDL_NAME(arts_free)();
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	148 }
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	149 UnloadARTSLibrary();
474 583a07ab5444 Doh! Patch by Joel Ray Holveck Sam Lantinga <slouken@libsdl.org> parents: 301 diff changeset	150
583a07ab5444 Doh! Patch by Joel Ray Holveck Sam Lantinga <slouken@libsdl.org> parents: 301 diff changeset	151 return available;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	152 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	153
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	154 static void Audio_DeleteDevice(SDL_AudioDevice *device)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	155 {
1336 3692456e7b0f Use SDL_ prefixed versions of C library functions. Sam Lantinga <slouken@libsdl.org> parents: 1312 diff changeset	156 SDL_free(device->hidden);
3692456e7b0f Use SDL_ prefixed versions of C library functions. Sam Lantinga <slouken@libsdl.org> parents: 1312 diff changeset	157 SDL_free(device);
294 d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	158 UnloadARTSLibrary();
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	159 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	160
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	161 static SDL_AudioDevice *Audio_CreateDevice(int devindex)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	162 {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	163 SDL_AudioDevice *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 /* Initialize all variables that we clean on shutdown */
294 d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	166 LoadARTSLibrary();
1336 3692456e7b0f Use SDL_ prefixed versions of C library functions. Sam Lantinga <slouken@libsdl.org> parents: 1312 diff changeset	167 this = (SDL_AudioDevice *)SDL_malloc(sizeof(SDL_AudioDevice));
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	168 if ( this ) {
1336 3692456e7b0f Use SDL_ prefixed versions of C library functions. Sam Lantinga <slouken@libsdl.org> parents: 1312 diff changeset	169 SDL_memset(this, 0, (sizeof *this));
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	170 this->hidden = (struct SDL_PrivateAudioData *)
1336 3692456e7b0f Use SDL_ prefixed versions of C library functions. Sam Lantinga <slouken@libsdl.org> parents: 1312 diff changeset	171 SDL_malloc((sizeof *this->hidden));
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	172 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	173 if ( (this == NULL) \|\| (this->hidden == NULL) ) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	174 SDL_OutOfMemory();
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	175 if ( this ) {
1336 3692456e7b0f Use SDL_ prefixed versions of C library functions. Sam Lantinga <slouken@libsdl.org> parents: 1312 diff changeset	176 SDL_free(this);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	177 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	178 return(0);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	179 }
1336 3692456e7b0f Use SDL_ prefixed versions of C library functions. Sam Lantinga <slouken@libsdl.org> parents: 1312 diff changeset	180 SDL_memset(this->hidden, 0, (sizeof *this->hidden));
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	181 stream = 0;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	182
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	183 /* Set the function pointers */
1361 19418e4422cb New configure-based build system. Still work in progress, but much improved Sam Lantinga <slouken@libsdl.org> parents: 1358 diff changeset	184 this->OpenAudio = ARTS_OpenAudio;
19418e4422cb New configure-based build system. Still work in progress, but much improved Sam Lantinga <slouken@libsdl.org> parents: 1358 diff changeset	185 this->WaitAudio = ARTS_WaitAudio;
19418e4422cb New configure-based build system. Still work in progress, but much improved Sam Lantinga <slouken@libsdl.org> parents: 1358 diff changeset	186 this->PlayAudio = ARTS_PlayAudio;
19418e4422cb New configure-based build system. Still work in progress, but much improved Sam Lantinga <slouken@libsdl.org> parents: 1358 diff changeset	187 this->GetAudioBuf = ARTS_GetAudioBuf;
19418e4422cb New configure-based build system. Still work in progress, but much improved Sam Lantinga <slouken@libsdl.org> parents: 1358 diff changeset	188 this->CloseAudio = ARTS_CloseAudio;
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 this->free = Audio_DeleteDevice;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	191
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	192 return this;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	193 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	194
1361 19418e4422cb New configure-based build system. Still work in progress, but much improved Sam Lantinga <slouken@libsdl.org> parents: 1358 diff changeset	195 AudioBootStrap ARTS_bootstrap = {
19418e4422cb New configure-based build system. Still work in progress, but much improved Sam Lantinga <slouken@libsdl.org> parents: 1358 diff changeset	196 ARTS_DRIVER_NAME, "Analog Realtime Synthesizer",
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	197 Audio_Available, Audio_CreateDevice
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	198 };
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	199
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	200 /* This function waits until it is possible to write a full sound buffer */
1361 19418e4422cb New configure-based build system. Still work in progress, but much improved Sam Lantinga <slouken@libsdl.org> parents: 1358 diff changeset	201 static void ARTS_WaitAudio(_THIS)
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	202 {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	203 Sint32 ticks;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	204
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	205 /* Check to see if the thread-parent process is still alive */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	206 { static int cnt = 0;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	207 /* Note that this only works with thread implementations
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	208 that use a different process id for each thread.
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	209 */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	210 if (parent && (((++cnt)%10) == 0)) { /* Check every 10 loops */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	211 if ( kill(parent, 0) < 0 ) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	212 this->enabled = 0;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	213 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	214 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	215 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	216
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	217 /* Use timer for general audio synchronization */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	218 ticks = ((Sint32)(next_frame - SDL_GetTicks()))-FUDGE_TICKS;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	219 if ( ticks > 0 ) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	220 SDL_Delay(ticks);
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
1361 19418e4422cb New configure-based build system. Still work in progress, but much improved Sam Lantinga <slouken@libsdl.org> parents: 1358 diff changeset	224 static void ARTS_PlayAudio(_THIS)
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	225 {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	226 int written;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	227
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	228 /* Write the audio data */
294 d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	229 written = SDL_NAME(arts_write)(stream, mixbuf, mixlen);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	230
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	231 /* If timer synchronization is enabled, set the next write frame */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	232 if ( frame_ticks ) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	233 next_frame += frame_ticks;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	234 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	235
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	236 /* If we couldn't write, assume fatal error for now */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	237 if ( written < 0 ) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	238 this->enabled = 0;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	239 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	240 #ifdef DEBUG_AUDIO
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	241 fprintf(stderr, "Wrote %d bytes of audio data\n", written);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	242 #endif
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	243 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	244
1361 19418e4422cb New configure-based build system. Still work in progress, but much improved Sam Lantinga <slouken@libsdl.org> parents: 1358 diff changeset	245 static Uint8 *ARTS_GetAudioBuf(_THIS)
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 return(mixbuf);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	248 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	249
1361 19418e4422cb New configure-based build system. Still work in progress, but much improved Sam Lantinga <slouken@libsdl.org> parents: 1358 diff changeset	250 static void ARTS_CloseAudio(_THIS)
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 if ( mixbuf != NULL ) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	253 SDL_FreeAudioMem(mixbuf);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	254 mixbuf = NULL;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	255 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	256 if ( stream ) {
294 d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	257 SDL_NAME(arts_close_stream)(stream);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	258 stream = 0;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	259 }
294 d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	260 SDL_NAME(arts_free)();
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	261 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	262
1361 19418e4422cb New configure-based build system. Still work in progress, but much improved Sam Lantinga <slouken@libsdl.org> parents: 1358 diff changeset	263 static int ARTS_OpenAudio(_THIS, SDL_AudioSpec *spec)
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	264 {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	265 int bits, frag_spec;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	266 Uint16 test_format, format;
3959 33c248ea75f9 Prevent arts audio target from crashing/hanging SDL if the audio hardware Ryan C. Gordon <icculus@icculus.org> parents: 1402 diff changeset	267 int error_code;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	268
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	269 /* Reset the timer synchronization flag */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	270 frame_ticks = 0.0;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	271
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	272 mixbuf = NULL;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	273
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	274 /* Try for a closest match on audio format */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	275 format = 0;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	276 bits = 0;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	277 for ( test_format = SDL_FirstAudioFormat(spec->format);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	278 ! format && test_format; ) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	279 #ifdef DEBUG_AUDIO
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	280 fprintf(stderr, "Trying format 0x%4.4x\n", test_format);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	281 #endif
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	282 switch ( test_format ) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	283 case AUDIO_U8:
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	284 bits = 8;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	285 format = 1;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	286 break;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	287 case AUDIO_S16LSB:
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	288 bits = 16;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	289 format = 1;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	290 break;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	291 default:
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	292 format = 0;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	293 break;
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 ( ! format ) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	296 test_format = SDL_NextAudioFormat();
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	297 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	298 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	299 if ( format == 0 ) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	300 SDL_SetError("Couldn't find any hardware audio formats");
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	301 return(-1);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	302 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	303 spec->format = test_format;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	304
3959 33c248ea75f9 Prevent arts audio target from crashing/hanging SDL if the audio hardware Ryan C. Gordon <icculus@icculus.org> parents: 1402 diff changeset	305 error_code = SDL_NAME(arts_init)();
33c248ea75f9 Prevent arts audio target from crashing/hanging SDL if the audio hardware Ryan C. Gordon <icculus@icculus.org> parents: 1402 diff changeset	306 if ( error_code != 0 ) {
33c248ea75f9 Prevent arts audio target from crashing/hanging SDL if the audio hardware Ryan C. Gordon <icculus@icculus.org> parents: 1402 diff changeset	307 SDL_SetError("Unable to initialize ARTS: %s", SDL_NAME(arts_error_text)(error_code));
33c248ea75f9 Prevent arts audio target from crashing/hanging SDL if the audio hardware Ryan C. Gordon <icculus@icculus.org> parents: 1402 diff changeset	308 return(-1);
33c248ea75f9 Prevent arts audio target from crashing/hanging SDL if the audio hardware Ryan C. Gordon <icculus@icculus.org> parents: 1402 diff changeset	309 }
33c248ea75f9 Prevent arts audio target from crashing/hanging SDL if the audio hardware Ryan C. Gordon <icculus@icculus.org> parents: 1402 diff changeset	310 if ( ! SDL_NAME(arts_suspended)() ) {
33c248ea75f9 Prevent arts audio target from crashing/hanging SDL if the audio hardware Ryan C. Gordon <icculus@icculus.org> parents: 1402 diff changeset	311 SDL_SetError("ARTS can not open audio device");
294 d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	312 return(-1);
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	313 }
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	314 stream = SDL_NAME(arts_play_stream)(spec->freq, bits, spec->channels, "SDL");
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	315
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	316 /* Calculate the final parameters for this audio specification */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	317 SDL_CalculateAudioSpec(spec);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	318
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	319 /* Determine the power of two of the fragment size */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	320 for ( frag_spec = 0; (0x01<<frag_spec) < spec->size; ++frag_spec );
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	321 if ( (0x01<<frag_spec) != spec->size ) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	322 SDL_SetError("Fragment size must be a power of two");
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	323 return(-1);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	324 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	325 frag_spec \|= 0x00020000; /* two fragments, for low latency */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	326
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	327 #ifdef ARTS_P_PACKET_SETTINGS
294 d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	328 SDL_NAME(arts_stream_set)(stream, ARTS_P_PACKET_SETTINGS, frag_spec);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	329 #else
294 d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	330 SDL_NAME(arts_stream_set)(stream, ARTS_P_PACKET_SIZE, frag_spec&0xffff);
d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	331 SDL_NAME(arts_stream_set)(stream, ARTS_P_PACKET_COUNT, frag_spec>>16);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	332 #endif
294 d2d48e10f370 Added a new header file: SDL_loadso.h Sam Lantinga <slouken@libsdl.org> parents: 252 diff changeset	333 spec->size = SDL_NAME(arts_stream_get)(stream, ARTS_P_PACKET_SIZE);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	334
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	335 /* Allocate mixing buffer */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	336 mixlen = spec->size;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	337 mixbuf = (Uint8 *)SDL_AllocAudioMem(mixlen);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	338 if ( mixbuf == NULL ) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	339 return(-1);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	340 }
1336 3692456e7b0f Use SDL_ prefixed versions of C library functions. Sam Lantinga <slouken@libsdl.org> parents: 1312 diff changeset	341 SDL_memset(mixbuf, spec->silence, spec->size);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	342
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	343 /* Get the parent process id (we're the parent of the audio thread) */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	344 parent = getpid();
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	345
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	346 /* We're ready to rock and roll. :-) */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	347 return(0);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	348 }

Mercurial > sdl-ios-xcode

annotate src/audio/arts/SDL_artsaudio.c @ 4135:cd98d1dc385c SDL-1.2