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

annotate src/audio/paudio/SDL_paudio.c @ 3846:66fb40445587 SDL-ryan-multiple-audio-device

Removed distinction between "available" and "init" in audio backends, since both had to be checked for success as a pair at the higher level and several of the Available methods were just always-succeed placeholders anyhow. Now the availability check is done in the init code, and the higher level tries all possible drivers until one manages to initialize successfully.

author	Ryan C. Gordon <icculus@icculus.org>
date	Tue, 17 Oct 2006 09:09:21 +0000
parents	ca74a71063ac
children

rev	line source
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	1 /*
1312 c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges) Sam Lantinga <slouken@libsdl.org> parents: 0 diff changeset	2 SDL - Simple DirectMedia Layer
c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges) Sam Lantinga <slouken@libsdl.org> parents: 0 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: 0 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: 0 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: 0 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: 0 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: 0 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: 0 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 Carsten Griwodz
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	20 griff@kom.tu-darmstadt.de
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	21
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	22 based on linux/SDL_dspaudio.c by Sam Lantinga
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	23 */
1402 d910939febfa Use consistent identifiers for the various platforms we support. Sam Lantinga <slouken@libsdl.org> parents: 1361 diff changeset	24 #include "SDL_config.h"
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	25
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	26 /* Allow access to a raw mixing buffer */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	27
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	28 #include <errno.h>
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	29 #include <unistd.h>
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	30 #include <fcntl.h>
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	31 #include <sys/time.h>
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	32 #include <sys/ioctl.h>
3809 7852b5b78af5 Cleaning out SDL_audiodev.c and related references ... Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	33 #include <sys/types.h>
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	34 #include <sys/stat.h>
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	35
1358 c71e05b4dc2e More header massaging... works great on Windows. ;-) Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	36 #include "SDL_timer.h"
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	37 #include "SDL_audio.h"
3809 7852b5b78af5 Cleaning out SDL_audiodev.c and related references ... Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	38 #include "SDL_stdinc.h"
1361 19418e4422cb New configure-based build system. Still work in progress, but much improved Sam Lantinga <slouken@libsdl.org> parents: 1358 diff changeset	39 #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	40 #include "../SDL_audio_c.h"
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	41 #include "SDL_paudio.h"
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	42
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	43 #define DEBUG_AUDIO 0
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	44
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	45 /* A conflict within AIX 4.3.3 <sys/> headers and probably others as well.
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	46 * I guess nobody ever uses audio... Shame over AIX header files. */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	47 #include <sys/machine.h>
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	48 #undef BIG_ENDIAN
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	49 #include <sys/audio.h>
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	50
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	51 /* The tag name used by paud audio */
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	52 #define PAUDIO_DRIVER_NAME "paud"
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	53
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	54 /* Open the audio device for playback, and don't block if busy */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	55 /* #define OPEN_FLAGS (O_WRONLY\|O_NONBLOCK) */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	56 #define OPEN_FLAGS O_WRONLY
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	57
3809 7852b5b78af5 Cleaning out SDL_audiodev.c and related references ... Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	58 /* Get the name of the audio device we use for output */
7852b5b78af5 Cleaning out SDL_audiodev.c and related references ... Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	59
7852b5b78af5 Cleaning out SDL_audiodev.c and related references ... Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	60 #ifndef _PATH_DEV_DSP
7852b5b78af5 Cleaning out SDL_audiodev.c and related references ... Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	61 #define _PATH_DEV_DSP "/dev/%caud%c/%c"
7852b5b78af5 Cleaning out SDL_audiodev.c and related references ... Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	62 #endif
7852b5b78af5 Cleaning out SDL_audiodev.c and related references ... Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	63
7852b5b78af5 Cleaning out SDL_audiodev.c and related references ... Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	64 static char devsettings[][3] = {
7852b5b78af5 Cleaning out SDL_audiodev.c and related references ... Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	65 {'p', '0', '1'}, {'p', '0', '2'}, {'p', '0', '3'}, {'p', '0', '4'},
7852b5b78af5 Cleaning out SDL_audiodev.c and related references ... Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	66 {'p', '1', '1'}, {'p', '1', '2'}, {'p', '1', '3'}, {'p', '1', '4'},
7852b5b78af5 Cleaning out SDL_audiodev.c and related references ... Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	67 {'p', '2', '1'}, {'p', '2', '2'}, {'p', '2', '3'}, {'p', '2', '4'},
7852b5b78af5 Cleaning out SDL_audiodev.c and related references ... Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	68 {'p', '3', '1'}, {'p', '3', '2'}, {'p', '3', '3'}, {'p', '3', '4'},
7852b5b78af5 Cleaning out SDL_audiodev.c and related references ... Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	69 {'b', '0', '1'}, {'b', '0', '2'}, {'b', '0', '3'}, {'b', '0', '4'},
7852b5b78af5 Cleaning out SDL_audiodev.c and related references ... Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	70 {'b', '1', '1'}, {'b', '1', '2'}, {'b', '1', '3'}, {'b', '1', '4'},
7852b5b78af5 Cleaning out SDL_audiodev.c and related references ... Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	71 {'b', '2', '1'}, {'b', '2', '2'}, {'b', '2', '3'}, {'b', '2', '4'},
7852b5b78af5 Cleaning out SDL_audiodev.c and related references ... Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	72 {'b', '3', '1'}, {'b', '3', '2'}, {'b', '3', '3'}, {'b', '3', '4'},
7852b5b78af5 Cleaning out SDL_audiodev.c and related references ... Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	73 {'\0', '\0', '\0'}
7852b5b78af5 Cleaning out SDL_audiodev.c and related references ... Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	74 };
7852b5b78af5 Cleaning out SDL_audiodev.c and related references ... Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	75
7852b5b78af5 Cleaning out SDL_audiodev.c and related references ... Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	76 static int
7852b5b78af5 Cleaning out SDL_audiodev.c and related references ... Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	77 OpenUserDefinedDevice(char *path, int maxlen, int flags)
7852b5b78af5 Cleaning out SDL_audiodev.c and related references ... Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	78 {
7852b5b78af5 Cleaning out SDL_audiodev.c and related references ... Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	79 const char *audiodev;
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	80 int fd;
3809 7852b5b78af5 Cleaning out SDL_audiodev.c and related references ... Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	81
7852b5b78af5 Cleaning out SDL_audiodev.c and related references ... Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	82 /* Figure out what our audio device is */
7852b5b78af5 Cleaning out SDL_audiodev.c and related references ... Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	83 if ((audiodev = SDL_getenv("SDL_PATH_DSP")) == NULL) {
7852b5b78af5 Cleaning out SDL_audiodev.c and related references ... Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	84 audiodev = SDL_getenv("AUDIODEV");
7852b5b78af5 Cleaning out SDL_audiodev.c and related references ... Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	85 }
7852b5b78af5 Cleaning out SDL_audiodev.c and related references ... Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	86 if (audiodev == NULL) {
7852b5b78af5 Cleaning out SDL_audiodev.c and related references ... Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	87 return -1;
7852b5b78af5 Cleaning out SDL_audiodev.c and related references ... Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	88 }
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	89 fd = open(audiodev, flags, 0);
3809 7852b5b78af5 Cleaning out SDL_audiodev.c and related references ... Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	90 if (path != NULL) {
7852b5b78af5 Cleaning out SDL_audiodev.c and related references ... Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	91 SDL_strlcpy(path, audiodev, maxlen);
7852b5b78af5 Cleaning out SDL_audiodev.c and related references ... Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	92 path[maxlen - 1] = '\0';
7852b5b78af5 Cleaning out SDL_audiodev.c and related references ... Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	93 }
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	94 return fd;
3809 7852b5b78af5 Cleaning out SDL_audiodev.c and related references ... Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	95 }
7852b5b78af5 Cleaning out SDL_audiodev.c and related references ... Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	96
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	97 static int
3809 7852b5b78af5 Cleaning out SDL_audiodev.c and related references ... Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	98 OpenAudioPath(char *path, int maxlen, int flags, int classic)
7852b5b78af5 Cleaning out SDL_audiodev.c and related references ... Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	99 {
7852b5b78af5 Cleaning out SDL_audiodev.c and related references ... Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	100 struct stat sb;
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	101 int cycle = 0;
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	102 int fd = OpenUserDefinedDevice(path, maxlen, flags);
3809 7852b5b78af5 Cleaning out SDL_audiodev.c and related references ... Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	103
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	104 if (fd != -1) {
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	105 return fd;
3809 7852b5b78af5 Cleaning out SDL_audiodev.c and related references ... Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	106 }
7852b5b78af5 Cleaning out SDL_audiodev.c and related references ... Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	107
7852b5b78af5 Cleaning out SDL_audiodev.c and related references ... Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	108 /* !!! FIXME: do we really need a table here? */
7852b5b78af5 Cleaning out SDL_audiodev.c and related references ... Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	109 while (devsettings[cycle][0] != '\0') {
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	110 char audiopath[1024];
3809 7852b5b78af5 Cleaning out SDL_audiodev.c and related references ... Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	111 SDL_snprintf(audiopath, SDL_arraysize(audiopath),
7852b5b78af5 Cleaning out SDL_audiodev.c and related references ... Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	112 _PATH_DEV_DSP,
7852b5b78af5 Cleaning out SDL_audiodev.c and related references ... Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	113 devsettings[cycle][0],
7852b5b78af5 Cleaning out SDL_audiodev.c and related references ... Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	114 devsettings[cycle][1], devsettings[cycle][2]);
7852b5b78af5 Cleaning out SDL_audiodev.c and related references ... Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	115
7852b5b78af5 Cleaning out SDL_audiodev.c and related references ... Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	116 if (stat(audiopath, &sb) == 0) {
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	117 fd = open(audiopath, flags, 0);
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	118 if (fd > 0) {
3809 7852b5b78af5 Cleaning out SDL_audiodev.c and related references ... Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	119 if (path != NULL) {
7852b5b78af5 Cleaning out SDL_audiodev.c and related references ... Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	120 SDL_strlcpy(path, audiopath, maxlen);
7852b5b78af5 Cleaning out SDL_audiodev.c and related references ... Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	121 }
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	122 return fd;
3809 7852b5b78af5 Cleaning out SDL_audiodev.c and related references ... Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	123 }
7852b5b78af5 Cleaning out SDL_audiodev.c and related references ... Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	124 }
7852b5b78af5 Cleaning out SDL_audiodev.c and related references ... Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	125 }
7852b5b78af5 Cleaning out SDL_audiodev.c and related references ... Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	126 return -1;
7852b5b78af5 Cleaning out SDL_audiodev.c and related references ... Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	127 }
7852b5b78af5 Cleaning out SDL_audiodev.c and related references ... Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	128
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	129 /* This function waits until it is possible to write a full sound buffer */
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	130 static void
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	131 PAUDIO_WaitDevice(_THIS)
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	132 {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	133 fd_set fdset;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	134
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	135 /* See if we need to use timed audio synchronization */
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	136 if (this->hidden->frame_ticks) {
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	137 /* Use timer for general audio synchronization */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	138 Sint32 ticks;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	139
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	140 ticks = ((Sint32)(this->hidden->next_frame-SDL_GetTicks()))-FUDGE_TICKS;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	141 if (ticks > 0) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	142 SDL_Delay(ticks);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	143 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	144 } else {
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	145 audio_buffer paud_bufinfo;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	146
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	147 /* Use select() for audio synchronization */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	148 struct timeval timeout;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	149 FD_ZERO(&fdset);
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	150 FD_SET(this->hidden->audio_fd, &fdset);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	151
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	152 if (ioctl(this->hidden->audio_fd, AUDIO_BUFFER, &paud_bufinfo) < 0) {
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	153 #ifdef DEBUG_AUDIO
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	154 fprintf(stderr, "Couldn't get audio buffer information\n");
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	155 #endif
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	156 timeout.tv_sec = 10;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	157 timeout.tv_usec = 0;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	158 } else {
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	159 long ms_in_buf = paud_bufinfo.write_buf_time;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	160 timeout.tv_sec = ms_in_buf / 1000;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	161 ms_in_buf = ms_in_buf - timeout.tv_sec * 1000;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	162 timeout.tv_usec = ms_in_buf * 1000;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	163 #ifdef DEBUG_AUDIO
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	164 fprintf(stderr,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	165 "Waiting for write_buf_time=%ld,%ld\n",
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	166 timeout.tv_sec, timeout.tv_usec);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	167 #endif
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	168 }
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	169
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	170 #ifdef DEBUG_AUDIO
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	171 fprintf(stderr, "Waiting for audio to get ready\n");
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	172 #endif
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	173 if (select(this->hidden->audio_fd+1,NULL,&fdset,NULL,&timeout) <= 0) {
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	174 const char *message =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	175 "Audio timeout - buggy audio driver? (disabled)";
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	176 /*
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	177 * In general we should never print to the screen,
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	178 * but in this case we have no other way of letting
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	179 * the user know what happened.
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	180 */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	181 fprintf(stderr, "SDL: %s - %s\n", strerror(errno), message);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	182 this->enabled = 0;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	183 /* Don't try to close - may hang */
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	184 this->hidden->audio_fd = -1;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	185 #ifdef DEBUG_AUDIO
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	186 fprintf(stderr, "Done disabling audio\n");
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	187 #endif
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	188 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	189 #ifdef DEBUG_AUDIO
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	190 fprintf(stderr, "Ready!\n");
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	191 #endif
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	192 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	193 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	194
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	195 static void
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	196 PAUDIO_PlayDevice(_THIS)
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	197 {
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	198 int written = 0;
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	199 const Uint8 *mixbuf = this->hidden->mixbuf;
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	200 const size_t mixlen = this->hidden->mixlen;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	201
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	202 /* Write the audio data, checking for EAGAIN on broken audio drivers */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	203 do {
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	204 written = write(this->hidden->audio_fd, mixbuf, mixlen);
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	205 if ((written < 0) && ((errno == 0) \|\| (errno == EAGAIN))) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	206 SDL_Delay(1); /* Let a little CPU time go by */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	207 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	208 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	209 while ((written < 0) &&
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	210 ((errno == 0) \|\| (errno == EAGAIN) \|\| (errno == EINTR)));
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	211
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	212 /* If timer synchronization is enabled, set the next write frame */
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	213 if (this->hidden->frame_ticks) {
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	214 this->hidden->next_frame += this->hidden->frame_ticks;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	215 }
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	216
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	217 /* If we couldn't write, assume fatal error for now */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	218 if (written < 0) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	219 this->enabled = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	220 }
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	221 #ifdef DEBUG_AUDIO
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	222 fprintf(stderr, "Wrote %d bytes of audio data\n", written);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	223 #endif
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	224 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	225
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	226 static Uint8 *
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	227 PAUDIO_GetDeviceBuf(_THIS)
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	228 {
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	229 return this->hidden->mixbuf;
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
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	232 static void
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	233 PAUDIO_CloseDevice(_THIS)
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	234 {
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	235 if (this->hidden != NULL) {
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	236 if (this->hidden->mixbuf != NULL) {
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	237 SDL_FreeAudioMem(this->hidden->mixbuf);
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	238 this->hidden->mixbuf = NULL;
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	239 }
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	240 if (this->hidden->audio_fd >= 0) {
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	241 close(this->hidden->audio_fd);
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	242 this->hidden->audio_fd = -1;
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	243 }
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	244 SDL_free(this->hidden);
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	245 this->hidden = NULL;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	246 }
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	247 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	248
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	249 static int
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	250 PAUDIO_OpenDevice(_THIS, const char *devname, int iscapture)
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	251 {
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	252 const char *workaround = SDL_getenv("SDL_DSP_NOSELECT");
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	253 char audiodev[1024];
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	254 const char *err = NULL;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	255 int format;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	256 int bytes_per_sample;
1982 3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: 1895 diff changeset	257 SDL_AudioFormat test_format;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	258 audio_init paud_init;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	259 audio_buffer paud_bufinfo;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	260 audio_status paud_status;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	261 audio_control paud_control;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	262 audio_change paud_change;
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	263 int fd = -1;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	264
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	265 /* Initialize all variables that we clean on shutdown */
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	266 this->hidden = (struct SDL_PrivateAudioData *)
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	267 SDL_malloc((sizeof *this->hidden));
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	268 if (this->hidden == NULL) {
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	269 SDL_OutOfMemory();
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	270 return 0;
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	271 }
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	272 SDL_memset(this->hidden, 0, (sizeof *this->hidden));
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	273
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	274 /* Open the audio device */
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	275 fd = OpenAudioPath(audiodev, sizeof(audiodev), OPEN_FLAGS, 0);
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	276 this->hidden->audio_fd = fd;
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	277 if (fd < 0) {
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	278 PAUDIO_CloseDevice(this);
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	279 SDL_SetError("Couldn't open %s: %s", audiodev, strerror(errno));
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	280 return 0;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	281 }
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	282
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	283 /*
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	284 * We can't set the buffer size - just ask the device for the maximum
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	285 * that we can have.
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	286 */
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	287 if (ioctl(fd, AUDIO_BUFFER, &paud_bufinfo) < 0) {
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	288 PAUDIO_CloseDevice(this);
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	289 SDL_SetError("Couldn't get audio buffer information");
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	290 return 0;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	291 }
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	292
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	293 if (this->spec.channels > 1)
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	294 this->spec.channels = 2;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	295 else
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	296 this->spec.channels = 1;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	297
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	298 /*
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	299 * Fields in the audio_init structure:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	300 *
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	301 * Ignored by us:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	302 *
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	303 * paud.loadpath[LOAD_PATH]; * DSP code to load, MWave chip only?
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	304 * paud.slot_number; * slot number of the adapter
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	305 * paud.device_id; * adapter identification number
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	306 *
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	307 * Input:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	308 *
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	309 * paud.srate; * the sampling rate in Hz
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	310 * paud.bits_per_sample; * 8, 16, 32, ...
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	311 * paud.bsize; * block size for this rate
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	312 * paud.mode; * ADPCM, PCM, MU_LAW, A_LAW, SOURCE_MIX
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	313 * paud.channels; * 1=mono, 2=stereo
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	314 * paud.flags; * FIXED - fixed length data
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	315 * * LEFT_ALIGNED, RIGHT_ALIGNED (var len only)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	316 * * TWOS_COMPLEMENT - 2's complement data
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	317 * * SIGNED - signed? comment seems wrong in sys/audio.h
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	318 * * BIG_ENDIAN
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	319 * paud.operation; * PLAY, RECORD
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	320 *
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	321 * Output:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	322 *
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	323 * paud.flags; * PITCH - pitch is supported
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	324 * * INPUT - input is supported
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	325 * * OUTPUT - output is supported
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	326 * * MONITOR - monitor is supported
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	327 * * VOLUME - volume is supported
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	328 * * VOLUME_DELAY - volume delay is supported
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	329 * * BALANCE - balance is supported
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	330 * * BALANCE_DELAY - balance delay is supported
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	331 * * TREBLE - treble control is supported
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	332 * * BASS - bass control is supported
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	333 * * BESTFIT_PROVIDED - best fit returned
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	334 * * LOAD_CODE - DSP load needed
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	335 * paud.rc; * NO_PLAY - DSP code can't do play requests
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	336 * * NO_RECORD - DSP code can't do record requests
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	337 * * INVALID_REQUEST - request was invalid
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	338 * * CONFLICT - conflict with open's flags
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	339 * * OVERLOADED - out of DSP MIPS or memory
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	340 * paud.position_resolution; * smallest increment for position
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	341 */
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	342
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	343 paud_init.srate = this->spec.freq;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	344 paud_init.mode = PCM;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	345 paud_init.operation = PLAY;
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	346 paud_init.channels = this->spec.channels;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	347
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	348 /* Try for a closest match on audio format */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	349 format = 0;
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	350 for (test_format = SDL_FirstAudioFormat(this->spec.format);
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	351 !format && test_format;) {
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	352 #ifdef DEBUG_AUDIO
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	353 fprintf(stderr, "Trying format 0x%4.4x\n", test_format);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	354 #endif
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	355 switch (test_format) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	356 case AUDIO_U8:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	357 bytes_per_sample = 1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	358 paud_init.bits_per_sample = 8;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	359 paud_init.flags = TWOS_COMPLEMENT \| FIXED;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	360 format = 1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	361 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	362 case AUDIO_S8:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	363 bytes_per_sample = 1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	364 paud_init.bits_per_sample = 8;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	365 paud_init.flags = SIGNED \| TWOS_COMPLEMENT \| FIXED;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	366 format = 1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	367 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	368 case AUDIO_S16LSB:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	369 bytes_per_sample = 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	370 paud_init.bits_per_sample = 16;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	371 paud_init.flags = SIGNED \| TWOS_COMPLEMENT \| FIXED;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	372 format = 1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	373 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	374 case AUDIO_S16MSB:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	375 bytes_per_sample = 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	376 paud_init.bits_per_sample = 16;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	377 paud_init.flags = BIG_ENDIAN \| SIGNED \| TWOS_COMPLEMENT \| FIXED;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	378 format = 1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	379 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	380 case AUDIO_U16LSB:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	381 bytes_per_sample = 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	382 paud_init.bits_per_sample = 16;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	383 paud_init.flags = TWOS_COMPLEMENT \| FIXED;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	384 format = 1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	385 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	386 case AUDIO_U16MSB:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	387 bytes_per_sample = 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	388 paud_init.bits_per_sample = 16;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	389 paud_init.flags = BIG_ENDIAN \| TWOS_COMPLEMENT \| FIXED;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	390 format = 1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	391 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	392 default:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	393 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	394 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	395 if (!format) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	396 test_format = SDL_NextAudioFormat();
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	397 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	398 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	399 if (format == 0) {
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	400 #ifdef DEBUG_AUDIO
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	401 fprintf(stderr, "Couldn't find any hardware audio formats\n");
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	402 #endif
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	403 PAUDIO_CloseDevice(this);
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	404 SDL_SetError("Couldn't find any hardware audio formats");
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	405 return 0;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	406 }
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	407 this->spec.format = test_format;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	408
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	409 /*
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	410 * We know the buffer size and the max number of subsequent writes
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	411 * that can be pending. If more than one can pend, allow the application
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	412 * to do something like double buffering between our write buffer and
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	413 * the device's own buffer that we are filling with write() anyway.
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	414 *
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	415 * We calculate this->spec.samples like this because
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	416 * SDL_CalculateAudioSpec() will give put paud_bufinfo.write_buf_cap
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	417 * (or paud_bufinfo.write_buf_cap/2) into this->spec.size in return.
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	418 */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	419 if (paud_bufinfo.request_buf_cap == 1) {
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	420 this->spec.samples = paud_bufinfo.write_buf_cap
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	421 / bytes_per_sample / this->spec.channels;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	422 } else {
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	423 this->spec.samples = paud_bufinfo.write_buf_cap
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	424 / bytes_per_sample / this->spec.channels / 2;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	425 }
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	426 paud_init.bsize = bytes_per_sample * this->spec.channels;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	427
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	428 SDL_CalculateAudioSpec(&this->spec);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	429
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	430 /*
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	431 * The AIX paud device init can't modify the values of the audio_init
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	432 * structure that we pass to it. So we don't need any recalculation
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	433 * of this stuff and no reinit call as in linux dsp and dma code.
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	434 *
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	435 * /dev/paud supports all of the encoding formats, so we don't need
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	436 * to do anything like reopening the device, either.
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	437 */
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	438 if (ioctl(fd, AUDIO_INIT, &paud_init) < 0) {
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	439 switch (paud_init.rc) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	440 case 1:
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	441 err = "Couldn't set audio format: DSP can't do play requests";
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	442 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	443 case 2:
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	444 err = "Couldn't set audio format: DSP can't do record requests";
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	445 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	446 case 4:
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	447 err = "Couldn't set audio format: request was invalid";
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	448 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	449 case 5:
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	450 err = "Couldn't set audio format: conflict with open's flags";
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	451 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	452 case 6:
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	453 err = "Couldn't set audio format: out of DSP MIPS or memory";
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	454 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	455 default:
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	456 err = "Couldn't set audio format: not documented in sys/audio.h";
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	457 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	458 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	459 }
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	460
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	461 if (err != NULL) {
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	462 PAUDIO_CloseDevice(this);
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	463 SDL_SetError("Paudio: %s", err);
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	464 return 0;
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	465 }
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	466
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	467 /* Allocate mixing buffer */
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	468 this->hidden->mixlen = this->spec.size;
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	469 this->hidden->mixbuf = (Uint8 *) SDL_AllocAudioMem(this->hidden->mixlen);
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	470 if (this->hidden->mixbuf == NULL) {
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	471 PAUDIO_CloseDevice(this);
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	472 SDL_OutOfMemory();
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	473 return 0;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	474 }
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	475 SDL_memset(this->hidden->mixbuf, this->spec.silence, this->spec.size);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	476
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	477 /*
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	478 * Set some paramters: full volume, first speaker that we can find.
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	479 * Ignore the other settings for now.
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	480 */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	481 paud_change.input = AUDIO_IGNORE; /* the new input source */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	482 paud_change.output = OUTPUT_1; /* EXTERNAL_SPEAKER,INTERNAL_SPEAKER,OUTPUT_1 */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	483 paud_change.monitor = AUDIO_IGNORE; /* the new monitor state */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	484 paud_change.volume = 0x7fffffff; /* volume level [0-0x7fffffff] */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	485 paud_change.volume_delay = AUDIO_IGNORE; /* the new volume delay */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	486 paud_change.balance = 0x3fffffff; /* the new balance */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	487 paud_change.balance_delay = AUDIO_IGNORE; /* the new balance delay */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	488 paud_change.treble = AUDIO_IGNORE; /* the new treble state */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	489 paud_change.bass = AUDIO_IGNORE; /* the new bass state */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	490 paud_change.pitch = AUDIO_IGNORE; /* the new pitch state */
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	491
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	492 paud_control.ioctl_request = AUDIO_CHANGE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	493 paud_control.request_info = (char *) &paud_change;
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	494 if (ioctl(fd, AUDIO_CONTROL, &paud_control) < 0) {
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	495 #ifdef DEBUG_AUDIO
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	496 fprintf(stderr, "Can't change audio display settings\n");
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	497 #endif
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	498 }
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	499
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	500 /*
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	501 * Tell the device to expect data. Actual start will wait for
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	502 * the first write() call.
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	503 */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	504 paud_control.ioctl_request = AUDIO_START;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	505 paud_control.position = 0;
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	506 if (ioctl(fd, AUDIO_CONTROL, &paud_control) < 0) {
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	507 PAUDIO_CloseDevice(this);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	508 #ifdef DEBUG_AUDIO
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	509 fprintf(stderr, "Can't start audio play\n");
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	510 #endif
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	511 SDL_SetError("Can't start audio play");
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	512 return 0;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	513 }
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	514
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	515 /* Check to see if we need to use select() workaround */
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	516 if (workaround != NULL) {
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	517 this->hidden->frame_ticks = (float) (this->spec.samples * 1000) /
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	518 this->spec.freq;
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	519 this->hidden->next_frame = SDL_GetTicks() + this->hidden->frame_ticks;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	520 }
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	521
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	522 /* We're ready to rock and roll. :-) */
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	523 return 1;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	524 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	525
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	526 static int
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	527 PAUDIO_Init(SDL_AudioDriverImpl *impl)
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	528 {
3846 66fb40445587 Removed distinction between "available" and "init" in audio backends, since Ryan C. Gordon <icculus@icculus.org> parents: 3832 diff changeset	529 int fd = OpenAudioPath(NULL, 0, OPEN_FLAGS, 0);
66fb40445587 Removed distinction between "available" and "init" in audio backends, since Ryan C. Gordon <icculus@icculus.org> parents: 3832 diff changeset	530 if (fd < 0) {
66fb40445587 Removed distinction between "available" and "init" in audio backends, since Ryan C. Gordon <icculus@icculus.org> parents: 3832 diff changeset	531 SDL_SetError("PAUDIO: Couldn't open audio device");
66fb40445587 Removed distinction between "available" and "init" in audio backends, since Ryan C. Gordon <icculus@icculus.org> parents: 3832 diff changeset	532 return 0;
66fb40445587 Removed distinction between "available" and "init" in audio backends, since Ryan C. Gordon <icculus@icculus.org> parents: 3832 diff changeset	533 }
66fb40445587 Removed distinction between "available" and "init" in audio backends, since Ryan C. Gordon <icculus@icculus.org> parents: 3832 diff changeset	534 close(fd);
66fb40445587 Removed distinction between "available" and "init" in audio backends, since Ryan C. Gordon <icculus@icculus.org> parents: 3832 diff changeset	535
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	536 /* Set the function pointers */
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	537 impl->OpenDevice = DSP_OpenDevice;
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	538 impl->PlayDevice = DSP_PlayDevice;
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	539 impl->PlayDevice = DSP_WaitDevice;
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	540 impl->GetDeviceBuf = DSP_GetDeviceBuf;
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	541 impl->CloseDevice = DSP_CloseDevice;
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	542 impl->OnlyHasDefaultOutputDevice = 1; /* !!! FIXME: add device enum! */
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	543
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	544 return 1;
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	545 }
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	546
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	547 AudioBootStrap PAUDIO_bootstrap = {
3846 66fb40445587 Removed distinction between "available" and "init" in audio backends, since Ryan C. Gordon <icculus@icculus.org> parents: 3832 diff changeset	548 PAUDIO_DRIVER_NAME, "AIX Paudio", PAUDIO_Init, 0
3832 ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	549 };
ca74a71063ac Paudio driver moved to 1.3 API. Ryan C. Gordon <icculus@icculus.org> parents: 3809 diff changeset	550
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	551 /* vi: set ts=4 sw=4 expandtab: */

Mercurial > sdl-ios-xcode

annotate src/audio/paudio/SDL_paudio.c @ 3846:66fb40445587 SDL-ryan-multiple-audio-device