sdl-ios-xcode: src/audio/alsa/SDL_alsa

annotate src/audio/alsa/SDL_alsa_audio.c @ 4639:f5cd4b6231ba

Added Test Directory. Touch input works in touchSimp for wacom bamboo fun on Ubuntu linux. Not yet integrated into library. Should support other touch devices and other linux distros, but not tested on anything else.

author	Jim Grandpre <jim.tla@gmail.com>
date	Mon, 24 May 2010 23:44:24 -0400
parents	9bc9ff36eb8f
children	b530ef003506

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
3697 f7b03b6838cb Fixed bug #926 Sam Lantinga <slouken@libsdl.org> parents: 3627 diff changeset	3 Copyright (C) 1997-2010 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
3697 f7b03b6838cb Fixed bug #926 Sam Lantinga <slouken@libsdl.org> parents: 3627 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
3697 f7b03b6838cb Fixed bug #926 Sam Lantinga <slouken@libsdl.org> parents: 3627 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
3697 f7b03b6838cb Fixed bug #926 Sam Lantinga <slouken@libsdl.org> parents: 3627 diff changeset	13 Lesser General Public License for more details.
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	14
3697 f7b03b6838cb Fixed bug #926 Sam Lantinga <slouken@libsdl.org> parents: 3627 diff changeset	15 You should have received a copy of the GNU Lesser General Public
f7b03b6838cb Fixed bug #926 Sam Lantinga <slouken@libsdl.org> parents: 3627 diff changeset	16 License along with this library; if not, write to the Free Software
f7b03b6838cb Fixed bug #926 Sam Lantinga <slouken@libsdl.org> parents: 3627 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
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	26 #include <sys/types.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: 1878 diff changeset	27 #include <signal.h> /* For kill() */
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	28 #include <errno.h>
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	29 #include <string.h>
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	30
1361 19418e4422cb New configure-based build system. Still work in progress, but much improved Sam Lantinga <slouken@libsdl.org> parents: 1358 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"
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	35 #include "SDL_alsa_audio.h"
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	36
3362 4e83cdb58134 Merged r4990:4991 from branches/SDL-1.2: ALSA 1.0 API and dlvsym() removal. Ryan C. Gordon <icculus@icculus.org> parents: 3068 diff changeset	37 #ifdef SDL_AUDIO_DRIVER_ALSA_DYNAMIC
4e83cdb58134 Merged r4990:4991 from branches/SDL-1.2: ALSA 1.0 API and dlvsym() removal. Ryan C. Gordon <icculus@icculus.org> parents: 3068 diff changeset	38 #include "SDL_loadso.h"
4e83cdb58134 Merged r4990:4991 from branches/SDL-1.2: ALSA 1.0 API and dlvsym() removal. Ryan C. Gordon <icculus@icculus.org> parents: 3068 diff changeset	39 #endif
865 92615154bb68 Date: Sun, 29 Feb 2004 15:14:22 +0200 Sam Lantinga <slouken@libsdl.org> parents: 769 diff changeset	40
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	41 /* The tag name used by ALSA audio */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	42 #define DRIVER_NAME "alsa"
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	43
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	44 static int (*ALSA_snd_pcm_open)
2060 866052b01ee5 indent is evil Sam Lantinga <slouken@libsdl.org> parents: 2049 diff changeset	45 (snd_pcm_t *, const char , snd_pcm_stream_t, int);
866052b01ee5 indent is evil Sam Lantinga <slouken@libsdl.org> parents: 2049 diff changeset	46 static int (ALSA_snd_pcm_close) (snd_pcm_t pcm);
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	47 static snd_pcm_sframes_t(*ALSA_snd_pcm_writei)
2060 866052b01ee5 indent is evil Sam Lantinga <slouken@libsdl.org> parents: 2049 diff changeset	48 (snd_pcm_t , const void , snd_pcm_uframes_t);
3627 631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	49 static int (ALSA_snd_pcm_recover) (snd_pcm_t , int, int);
2060 866052b01ee5 indent is evil Sam Lantinga <slouken@libsdl.org> parents: 2049 diff changeset	50 static int (ALSA_snd_pcm_prepare) (snd_pcm_t );
866052b01ee5 indent is evil Sam Lantinga <slouken@libsdl.org> parents: 2049 diff changeset	51 static int (ALSA_snd_pcm_drain) (snd_pcm_t );
866052b01ee5 indent is evil Sam Lantinga <slouken@libsdl.org> parents: 2049 diff changeset	52 static const char (ALSA_snd_strerror) (int);
866052b01ee5 indent is evil Sam Lantinga <slouken@libsdl.org> parents: 2049 diff changeset	53 static size_t(*ALSA_snd_pcm_hw_params_sizeof) (void);
866052b01ee5 indent is evil Sam Lantinga <slouken@libsdl.org> parents: 2049 diff changeset	54 static size_t(*ALSA_snd_pcm_sw_params_sizeof) (void);
3627 631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	55 static void (*ALSA_snd_pcm_hw_params_copy)
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	56 (snd_pcm_hw_params_t , const snd_pcm_hw_params_t );
2060 866052b01ee5 indent is evil Sam Lantinga <slouken@libsdl.org> parents: 2049 diff changeset	57 static int (ALSA_snd_pcm_hw_params_any) (snd_pcm_t , snd_pcm_hw_params_t *);
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	58 static int (*ALSA_snd_pcm_hw_params_set_access)
2060 866052b01ee5 indent is evil Sam Lantinga <slouken@libsdl.org> parents: 2049 diff changeset	59 (snd_pcm_t , snd_pcm_hw_params_t , snd_pcm_access_t);
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	60 static int (*ALSA_snd_pcm_hw_params_set_format)
2060 866052b01ee5 indent is evil Sam Lantinga <slouken@libsdl.org> parents: 2049 diff changeset	61 (snd_pcm_t , snd_pcm_hw_params_t , snd_pcm_format_t);
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	62 static int (*ALSA_snd_pcm_hw_params_set_channels)
2060 866052b01ee5 indent is evil Sam Lantinga <slouken@libsdl.org> parents: 2049 diff changeset	63 (snd_pcm_t , snd_pcm_hw_params_t , unsigned int);
3627 631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	64 static int (*ALSA_snd_pcm_hw_params_get_channels)
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	65 (const snd_pcm_hw_params_t , unsigned int );
3362 4e83cdb58134 Merged r4990:4991 from branches/SDL-1.2: ALSA 1.0 API and dlvsym() removal. Ryan C. Gordon <icculus@icculus.org> parents: 3068 diff changeset	66 static int (*ALSA_snd_pcm_hw_params_set_rate_near)
4e83cdb58134 Merged r4990:4991 from branches/SDL-1.2: ALSA 1.0 API and dlvsym() removal. Ryan C. Gordon <icculus@icculus.org> parents: 3068 diff changeset	67 (snd_pcm_t , snd_pcm_hw_params_t , unsigned int , int );
4e83cdb58134 Merged r4990:4991 from branches/SDL-1.2: ALSA 1.0 API and dlvsym() removal. Ryan C. Gordon <icculus@icculus.org> parents: 3068 diff changeset	68 static int (*ALSA_snd_pcm_hw_params_set_period_size_near)
4e83cdb58134 Merged r4990:4991 from branches/SDL-1.2: ALSA 1.0 API and dlvsym() removal. Ryan C. Gordon <icculus@icculus.org> parents: 3068 diff changeset	69 (snd_pcm_t , snd_pcm_hw_params_t , snd_pcm_uframes_t , int );
3627 631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	70 static int (*ALSA_snd_pcm_hw_params_get_period_size)
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	71 (const snd_pcm_hw_params_t , snd_pcm_uframes_t , int *);
3362 4e83cdb58134 Merged r4990:4991 from branches/SDL-1.2: ALSA 1.0 API and dlvsym() removal. Ryan C. Gordon <icculus@icculus.org> parents: 3068 diff changeset	72 static int (*ALSA_snd_pcm_hw_params_set_periods_near)
4e83cdb58134 Merged r4990:4991 from branches/SDL-1.2: ALSA 1.0 API and dlvsym() removal. Ryan C. Gordon <icculus@icculus.org> parents: 3068 diff changeset	73 (snd_pcm_t , snd_pcm_hw_params_t , unsigned int , int );
3627 631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	74 static int (*ALSA_snd_pcm_hw_params_get_periods)
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	75 (const snd_pcm_hw_params_t , unsigned int , int *);
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	76 static int (*ALSA_snd_pcm_hw_params_set_buffer_size_near)
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	77 (snd_pcm_t pcm, snd_pcm_hw_params_t , snd_pcm_uframes_t *);
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	78 static int (*ALSA_snd_pcm_hw_params_get_buffer_size)
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	79 (const snd_pcm_hw_params_t , snd_pcm_uframes_t );
2060 866052b01ee5 indent is evil Sam Lantinga <slouken@libsdl.org> parents: 2049 diff changeset	80 static int (ALSA_snd_pcm_hw_params) (snd_pcm_t , snd_pcm_hw_params_t *);
866052b01ee5 indent is evil Sam Lantinga <slouken@libsdl.org> parents: 2049 diff changeset	81 static int (ALSA_snd_pcm_sw_params_current) (snd_pcm_t ,
866052b01ee5 indent is evil Sam Lantinga <slouken@libsdl.org> parents: 2049 diff changeset	82 snd_pcm_sw_params_t *);
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	83 static int (*ALSA_snd_pcm_sw_params_set_start_threshold)
2060 866052b01ee5 indent is evil Sam Lantinga <slouken@libsdl.org> parents: 2049 diff changeset	84 (snd_pcm_t , snd_pcm_sw_params_t , snd_pcm_uframes_t);
866052b01ee5 indent is evil Sam Lantinga <slouken@libsdl.org> parents: 2049 diff changeset	85 static int (ALSA_snd_pcm_sw_params) (snd_pcm_t , snd_pcm_sw_params_t *);
866052b01ee5 indent is evil Sam Lantinga <slouken@libsdl.org> parents: 2049 diff changeset	86 static int (ALSA_snd_pcm_nonblock) (snd_pcm_t , int);
3627 631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	87 static int (ALSA_snd_pcm_wait)(snd_pcm_t , int);
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	88 #define snd_pcm_hw_params_sizeof ALSA_snd_pcm_hw_params_sizeof
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	89 #define snd_pcm_sw_params_sizeof ALSA_snd_pcm_sw_params_sizeof
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	90
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	91
1361 19418e4422cb New configure-based build system. Still work in progress, but much improved Sam Lantinga <slouken@libsdl.org> parents: 1358 diff changeset	92 #ifdef SDL_AUDIO_DRIVER_ALSA_DYNAMIC
865 92615154bb68 Date: Sun, 29 Feb 2004 15:14:22 +0200 Sam Lantinga <slouken@libsdl.org> parents: 769 diff changeset	93
1361 19418e4422cb New configure-based build system. Still work in progress, but much improved Sam Lantinga <slouken@libsdl.org> parents: 1358 diff changeset	94 static const char *alsa_library = SDL_AUDIO_DRIVER_ALSA_DYNAMIC;
865 92615154bb68 Date: Sun, 29 Feb 2004 15:14:22 +0200 Sam Lantinga <slouken@libsdl.org> parents: 769 diff changeset	95 static void *alsa_handle = NULL;
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	96
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	97 static int
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	98 load_alsa_sym(const char fn, void *addr)
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	99 {
3362 4e83cdb58134 Merged r4990:4991 from branches/SDL-1.2: ALSA 1.0 API and dlvsym() removal. Ryan C. Gordon <icculus@icculus.org> parents: 3068 diff changeset	100 *addr = SDL_LoadFunction(alsa_handle, fn);
4e83cdb58134 Merged r4990:4991 from branches/SDL-1.2: ALSA 1.0 API and dlvsym() removal. Ryan C. Gordon <icculus@icculus.org> parents: 3068 diff changeset	101 if (*addr == NULL) {
4e83cdb58134 Merged r4990:4991 from branches/SDL-1.2: ALSA 1.0 API and dlvsym() removal. Ryan C. Gordon <icculus@icculus.org> parents: 3068 diff changeset	102 /* Don't call SDL_SetError(): SDL_LoadFunction already did. */
4e83cdb58134 Merged r4990:4991 from branches/SDL-1.2: ALSA 1.0 API and dlvsym() removal. Ryan C. Gordon <icculus@icculus.org> parents: 3068 diff changeset	103 return 0;
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	104 }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	105
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	106 return 1;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	107 }
865 92615154bb68 Date: Sun, 29 Feb 2004 15:14:22 +0200 Sam Lantinga <slouken@libsdl.org> parents: 769 diff changeset	108
1161 05d4b93b911e Placate gcc's strict aliasing rules with an extra cast. Ryan C. Gordon <icculus@icculus.org> parents: 942 diff changeset	109 /* cast funcs to char* first, to please GCC's strict aliasing rules. */
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	110 #define SDL_ALSA_SYM(x) \
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	111 if (!load_alsa_sym(#x, (void *) (char ) &ALSA_##x)) return -1
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	112 #else
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	113 #define SDL_ALSA_SYM(x) ALSA_##x = x
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	114 #endif
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	115
2060 866052b01ee5 indent is evil Sam Lantinga <slouken@libsdl.org> parents: 2049 diff changeset	116 static int
866052b01ee5 indent is evil Sam Lantinga <slouken@libsdl.org> parents: 2049 diff changeset	117 load_alsa_syms(void)
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	118 {
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	119 SDL_ALSA_SYM(snd_pcm_open);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	120 SDL_ALSA_SYM(snd_pcm_close);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	121 SDL_ALSA_SYM(snd_pcm_writei);
3627 631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	122 SDL_ALSA_SYM(snd_pcm_recover);
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	123 SDL_ALSA_SYM(snd_pcm_prepare);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	124 SDL_ALSA_SYM(snd_pcm_drain);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	125 SDL_ALSA_SYM(snd_strerror);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	126 SDL_ALSA_SYM(snd_pcm_hw_params_sizeof);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	127 SDL_ALSA_SYM(snd_pcm_sw_params_sizeof);
3627 631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	128 SDL_ALSA_SYM(snd_pcm_hw_params_copy);
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	129 SDL_ALSA_SYM(snd_pcm_hw_params_any);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	130 SDL_ALSA_SYM(snd_pcm_hw_params_set_access);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	131 SDL_ALSA_SYM(snd_pcm_hw_params_set_format);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	132 SDL_ALSA_SYM(snd_pcm_hw_params_set_channels);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	133 SDL_ALSA_SYM(snd_pcm_hw_params_get_channels);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	134 SDL_ALSA_SYM(snd_pcm_hw_params_set_rate_near);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	135 SDL_ALSA_SYM(snd_pcm_hw_params_set_period_size_near);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	136 SDL_ALSA_SYM(snd_pcm_hw_params_get_period_size);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	137 SDL_ALSA_SYM(snd_pcm_hw_params_set_periods_near);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	138 SDL_ALSA_SYM(snd_pcm_hw_params_get_periods);
3627 631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	139 SDL_ALSA_SYM(snd_pcm_hw_params_set_buffer_size_near);
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	140 SDL_ALSA_SYM(snd_pcm_hw_params_get_buffer_size);
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	141 SDL_ALSA_SYM(snd_pcm_hw_params);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	142 SDL_ALSA_SYM(snd_pcm_sw_params_current);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	143 SDL_ALSA_SYM(snd_pcm_sw_params_set_start_threshold);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	144 SDL_ALSA_SYM(snd_pcm_sw_params);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	145 SDL_ALSA_SYM(snd_pcm_nonblock);
3627 631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	146 SDL_ALSA_SYM(snd_pcm_wait);
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	147 return 0;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	148 }
2060 866052b01ee5 indent is evil Sam Lantinga <slouken@libsdl.org> parents: 2049 diff changeset	149
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	150 #undef SDL_ALSA_SYM
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	151
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	152 #ifdef SDL_AUDIO_DRIVER_ALSA_DYNAMIC
865 92615154bb68 Date: Sun, 29 Feb 2004 15:14:22 +0200 Sam Lantinga <slouken@libsdl.org> parents: 769 diff changeset	153
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	154 static void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	155 UnloadALSALibrary(void)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	156 {
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	157 if (alsa_handle != NULL) {
3362 4e83cdb58134 Merged r4990:4991 from branches/SDL-1.2: ALSA 1.0 API and dlvsym() removal. Ryan C. Gordon <icculus@icculus.org> parents: 3068 diff changeset	158 SDL_UnloadObject(alsa_handle);
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	159 alsa_handle = NULL;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	160 }
865 92615154bb68 Date: Sun, 29 Feb 2004 15:14:22 +0200 Sam Lantinga <slouken@libsdl.org> parents: 769 diff changeset	161 }
92615154bb68 Date: Sun, 29 Feb 2004 15:14:22 +0200 Sam Lantinga <slouken@libsdl.org> parents: 769 diff changeset	162
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	163 static int
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	164 LoadALSALibrary(void)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	165 {
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	166 int retval = 0;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	167 if (alsa_handle == NULL) {
3362 4e83cdb58134 Merged r4990:4991 from branches/SDL-1.2: ALSA 1.0 API and dlvsym() removal. Ryan C. Gordon <icculus@icculus.org> parents: 3068 diff changeset	168 alsa_handle = SDL_LoadObject(alsa_library);
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	169 if (alsa_handle == NULL) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	170 retval = -1;
3362 4e83cdb58134 Merged r4990:4991 from branches/SDL-1.2: ALSA 1.0 API and dlvsym() removal. Ryan C. Gordon <icculus@icculus.org> parents: 3068 diff changeset	171 /* Don't call SDL_SetError(): SDL_LoadObject already did. */
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	172 } else {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	173 retval = load_alsa_syms();
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	174 if (retval < 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: 1878 diff changeset	175 UnloadALSALibrary();
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	176 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	177 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	178 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	179 return retval;
865 92615154bb68 Date: Sun, 29 Feb 2004 15:14:22 +0200 Sam Lantinga <slouken@libsdl.org> parents: 769 diff changeset	180 }
92615154bb68 Date: Sun, 29 Feb 2004 15:14:22 +0200 Sam Lantinga <slouken@libsdl.org> parents: 769 diff changeset	181
92615154bb68 Date: Sun, 29 Feb 2004 15:14:22 +0200 Sam Lantinga <slouken@libsdl.org> parents: 769 diff changeset	182 #else
92615154bb68 Date: Sun, 29 Feb 2004 15:14:22 +0200 Sam Lantinga <slouken@libsdl.org> parents: 769 diff changeset	183
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	184 static void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	185 UnloadALSALibrary(void)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	186 {
865 92615154bb68 Date: Sun, 29 Feb 2004 15:14:22 +0200 Sam Lantinga <slouken@libsdl.org> parents: 769 diff changeset	187 }
92615154bb68 Date: Sun, 29 Feb 2004 15:14:22 +0200 Sam Lantinga <slouken@libsdl.org> parents: 769 diff changeset	188
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	189 static int
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	190 LoadALSALibrary(void)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	191 {
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	192 load_alsa_syms();
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	193 return 0;
865 92615154bb68 Date: Sun, 29 Feb 2004 15:14:22 +0200 Sam Lantinga <slouken@libsdl.org> parents: 769 diff changeset	194 }
92615154bb68 Date: Sun, 29 Feb 2004 15:14:22 +0200 Sam Lantinga <slouken@libsdl.org> parents: 769 diff changeset	195
1361 19418e4422cb New configure-based build system. Still work in progress, but much improved Sam Lantinga <slouken@libsdl.org> parents: 1358 diff changeset	196 #endif /* SDL_AUDIO_DRIVER_ALSA_DYNAMIC */
865 92615154bb68 Date: Sun, 29 Feb 2004 15:14:22 +0200 Sam Lantinga <slouken@libsdl.org> parents: 769 diff changeset	197
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	198 static const char *
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	199 get_audio_device(int channels)
354 30935e76acb5 Updated ALSA audio support for ALSA 0.9 Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	200 {
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	201 const char *device;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	202
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	203 device = SDL_getenv("AUDIODEV"); /* Is there a standard variable name? */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	204 if (device == NULL) {
3627 631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	205 switch (channels) {
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	206 case 6:
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	207 device = "plug:surround51";
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	208 break;
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	209 case 4:
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	210 device = "plug:surround40";
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	211 break;
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	212 default:
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	213 device = "default";
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	214 break;
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	215 }
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	216 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	217 return device;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	218 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	219
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	220
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	221 /* 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: 1878 diff changeset	222 static void
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	223 ALSA_WaitDevice(_THIS)
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	224 {
3627 631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	225 /* We're in blocking mode, so there's nothing to do here */
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	226 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	227
1878 d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	228
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	229 /* !!! FIXME: is there a channel swizzler in alsalib instead? */
1878 d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	230 /*
d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	231 * http://bugzilla.libsdl.org/show_bug.cgi?id=110
d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	232 * "For Linux ALSA, this is FL-FR-RL-RR-C-LFE
d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	233 * and for Windows DirectX [and CoreAudio], this is FL-FR-C-LFE-RL-RR"
d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	234 */
d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	235 #define SWIZ6(T) \
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	236 T ptr = (T ) this->hidden->mixbuf; \
1878 d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	237 Uint32 i; \
3704 9bc9ff36eb8f Merged r5549:5550 from branches/SDL-1.2: ALSA 6-channel swizzle fix. Ryan C. Gordon <icculus@icculus.org> parents: 3699 diff changeset	238 for (i = 0; i < this->spec.samples; i++, ptr += 6) { \
1878 d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	239 T tmp; \
d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	240 tmp = ptr[2]; ptr[2] = ptr[4]; ptr[4] = tmp; \
d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	241 tmp = ptr[3]; ptr[3] = ptr[5]; ptr[5] = tmp; \
d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	242 }
d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	243
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	244 static __inline__ void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	245 swizzle_alsa_channels_6_64bit(_THIS)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	246 {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	247 SWIZ6(Uint64);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	248 }
2735 204be4fc2726 Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: 2060 diff changeset	249
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	250 static __inline__ void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	251 swizzle_alsa_channels_6_32bit(_THIS)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	252 {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	253 SWIZ6(Uint32);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	254 }
2735 204be4fc2726 Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: 2060 diff changeset	255
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	256 static __inline__ void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	257 swizzle_alsa_channels_6_16bit(_THIS)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	258 {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	259 SWIZ6(Uint16);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	260 }
2735 204be4fc2726 Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: 2060 diff changeset	261
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	262 static __inline__ void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	263 swizzle_alsa_channels_6_8bit(_THIS)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	264 {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	265 SWIZ6(Uint8);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	266 }
1878 d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	267
d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	268 #undef SWIZ6
d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	269
d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	270
d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	271 /*
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	272 * Called right before feeding this->hidden->mixbuf to the hardware. Swizzle
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	273 * channels from Windows/Mac order to the format alsalib will want.
1878 d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	274 */
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	275 static __inline__ void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	276 swizzle_alsa_channels(_THIS)
1878 d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	277 {
d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	278 if (this->spec.channels == 6) {
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	279 const Uint16 fmtsize = (this->spec.format & 0xFF); /* bits/channel. */
1878 d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	280 if (fmtsize == 16)
d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	281 swizzle_alsa_channels_6_16bit(this);
d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	282 else if (fmtsize == 8)
d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	283 swizzle_alsa_channels_6_8bit(this);
d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	284 else if (fmtsize == 32)
d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	285 swizzle_alsa_channels_6_32bit(this);
d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	286 else if (fmtsize == 64)
d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	287 swizzle_alsa_channels_6_64bit(this);
d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	288 }
d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	289
d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	290 /* !!! FIXME: update this for 7.1 if needed, later. */
d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	291 }
d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	292
d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	293
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	294 static void
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	295 ALSA_PlayDevice(_THIS)
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	296 {
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	297 int status;
3627 631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	298 const Uint8 sample_buf = (const Uint8 ) this->hidden->mixbuf;
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	299 const int frame_size = (((int) (this->spec.format & 0xFF)) / 8) *
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	300 this->spec.channels;
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	301 snd_pcm_uframes_t frames_left = ((snd_pcm_uframes_t) this->spec.samples);
765 4c2ba6161939 Editors Note: The original patch was modified to use SDL_Delay() instead of Sam Lantinga <slouken@libsdl.org> parents: 547 diff changeset	302
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	303 swizzle_alsa_channels(this);
1878 d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	304
3627 631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	305 while ( frames_left > 0 && this->enabled ) {
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	306 /* !!! FIXME: This works, but needs more testing before going live */
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	307 /ALSA_snd_pcm_wait(this->hidden->pcm_handle, -1);/
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	308 status = ALSA_snd_pcm_writei(this->hidden->pcm_handle,
3627 631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	309 sample_buf, frames_left);
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	310
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	311 if (status < 0) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	312 if (status == -EAGAIN) {
3627 631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	313 /* Apparently snd_pcm_recover() doesn't handle this case -
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	314 does it assume snd_pcm_wait() above? */
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	315 SDL_Delay(1);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	316 continue;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	317 }
3627 631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	318 status = ALSA_snd_pcm_recover(this->hidden->pcm_handle, status, 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: 1878 diff changeset	319 if (status < 0) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	320 /* Hmm, not much we can do - abort */
3627 631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	321 fprintf(stderr, "ALSA write failed (unrecoverable): %s\n",
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	322 ALSA_snd_strerror(status));
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	323 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: 1878 diff changeset	324 return;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	325 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	326 continue;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	327 }
3627 631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	328 sample_buf += status * frame_size;
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	329 frames_left -= status;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	330 }
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	331 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	332
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	333 static Uint8 *
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	334 ALSA_GetDeviceBuf(_THIS)
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	335 {
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	336 return (this->hidden->mixbuf);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	337 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	338
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	339 static void
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	340 ALSA_CloseDevice(_THIS)
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	341 {
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	342 if (this->hidden != NULL) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	343 if (this->hidden->mixbuf != NULL) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	344 SDL_FreeAudioMem(this->hidden->mixbuf);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	345 this->hidden->mixbuf = NULL;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	346 }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	347 if (this->hidden->pcm_handle) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	348 ALSA_snd_pcm_drain(this->hidden->pcm_handle);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	349 ALSA_snd_pcm_close(this->hidden->pcm_handle);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	350 this->hidden->pcm_handle = NULL;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	351 }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	352 SDL_free(this->hidden);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	353 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: 1878 diff changeset	354 }
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	355 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	356
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	357 static int
3627 631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	358 ALSA_finalize_hardware(_THIS, snd_pcm_hw_params_t *hwparams, int override)
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	359 {
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	360 int status;
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	361 snd_pcm_uframes_t bufsize;
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	362
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	363 /* "set" the hardware with the desired parameters */
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	364 status = ALSA_snd_pcm_hw_params(this->hidden->pcm_handle, hwparams);
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	365 if ( status < 0 ) {
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	366 return(-1);
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	367 }
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	368
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	369 /* Get samples for the actual buffer size */
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	370 status = ALSA_snd_pcm_hw_params_get_buffer_size(hwparams, &bufsize);
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	371 if ( status < 0 ) {
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	372 return(-1);
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	373 }
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	374 if ( !override && bufsize != this->spec.samples * 2 ) {
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	375 return(-1);
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	376 }
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	377
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	378 /* !!! FIXME: Is this safe to do? */
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	379 this->spec.samples = bufsize / 2;
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	380
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	381 /* This is useful for debugging */
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	382 if ( SDL_getenv("SDL_AUDIO_ALSA_DEBUG") ) {
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	383 snd_pcm_uframes_t persize = 0;
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	384 unsigned int periods = 0;
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	385
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	386 ALSA_snd_pcm_hw_params_get_period_size(hwparams, &persize, NULL);
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	387 ALSA_snd_pcm_hw_params_get_periods(hwparams, &periods, NULL);
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	388
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	389 fprintf(stderr,
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	390 "ALSA: period size = %ld, periods = %u, buffer size = %lu\n",
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	391 persize, periods, bufsize);
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	392 }
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	393
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	394 return(0);
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	395 }
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	396
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	397 static int
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	398 ALSA_set_period_size(_THIS, snd_pcm_hw_params_t *params, int override)
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	399 {
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	400 const char *env;
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	401 int status;
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	402 snd_pcm_hw_params_t *hwparams;
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	403 snd_pcm_uframes_t frames;
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	404 unsigned int periods;
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	405
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	406 /* Copy the hardware parameters for this setup */
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	407 snd_pcm_hw_params_alloca(&hwparams);
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	408 ALSA_snd_pcm_hw_params_copy(hwparams, params);
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	409
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	410 if ( !override ) {
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	411 env = SDL_getenv("SDL_AUDIO_ALSA_SET_PERIOD_SIZE");
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	412 if ( env ) {
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	413 override = SDL_atoi(env);
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	414 if ( override == 0 ) {
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	415 return(-1);
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	416 }
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	417 }
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	418 }
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	419
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	420 frames = this->spec.samples;
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	421 status = ALSA_snd_pcm_hw_params_set_period_size_near(
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	422 this->hidden->pcm_handle, hwparams, &frames, NULL);
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	423 if ( status < 0 ) {
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	424 return(-1);
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	425 }
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	426
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	427 periods = 2;
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	428 status = ALSA_snd_pcm_hw_params_set_periods_near(
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	429 this->hidden->pcm_handle, hwparams, &periods, NULL);
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	430 if ( status < 0 ) {
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	431 return(-1);
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	432 }
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	433
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	434 return ALSA_finalize_hardware(this, hwparams, override);
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	435 }
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	436
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	437 static int
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	438 ALSA_set_buffer_size(_THIS, snd_pcm_hw_params_t *params, int override)
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	439 {
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	440 const char *env;
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	441 int status;
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	442 snd_pcm_hw_params_t *hwparams;
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	443 snd_pcm_uframes_t frames;
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	444
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	445 /* Copy the hardware parameters for this setup */
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	446 snd_pcm_hw_params_alloca(&hwparams);
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	447 ALSA_snd_pcm_hw_params_copy(hwparams, params);
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	448
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	449 if ( !override ) {
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	450 env = SDL_getenv("SDL_AUDIO_ALSA_SET_BUFFER_SIZE");
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	451 if ( env ) {
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	452 override = SDL_atoi(env);
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	453 if ( override == 0 ) {
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	454 return(-1);
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	455 }
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	456 }
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	457 }
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	458
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	459 frames = this->spec.samples * 2;
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	460 status = ALSA_snd_pcm_hw_params_set_buffer_size_near(
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	461 this->hidden->pcm_handle, hwparams, &frames);
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	462 if ( status < 0 ) {
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	463 return(-1);
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	464 }
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	465
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	466 return ALSA_finalize_hardware(this, hwparams, override);
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	467 }
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	468
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	469 static int
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	470 ALSA_OpenDevice(_THIS, const char *devname, int iscapture)
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	471 {
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	472 int status = 0;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	473 snd_pcm_t *pcm_handle = NULL;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	474 snd_pcm_hw_params_t *hwparams = NULL;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	475 snd_pcm_sw_params_t *swparams = NULL;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	476 snd_pcm_format_t format = 0;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	477 SDL_AudioFormat test_format = 0;
3362 4e83cdb58134 Merged r4990:4991 from branches/SDL-1.2: ALSA 1.0 API and dlvsym() removal. Ryan C. Gordon <icculus@icculus.org> parents: 3068 diff changeset	478 unsigned int rate = 0;
4e83cdb58134 Merged r4990:4991 from branches/SDL-1.2: ALSA 1.0 API and dlvsym() removal. Ryan C. Gordon <icculus@icculus.org> parents: 3068 diff changeset	479 unsigned int channels = 0;
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	480
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	481 /* Initialize all variables that we clean on shutdown */
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	482 this->hidden = (struct SDL_PrivateAudioData *)
2060 866052b01ee5 indent is evil Sam Lantinga <slouken@libsdl.org> parents: 2049 diff changeset	483 SDL_malloc((sizeof *this->hidden));
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	484 if (this->hidden == NULL) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	485 SDL_OutOfMemory();
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	486 return 0;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	487 }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	488 SDL_memset(this->hidden, 0, (sizeof *this->hidden));
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	489
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	490 /* Open the audio device */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	491 /* Name of device should depend on # channels in spec */
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	492 status = ALSA_snd_pcm_open(&pcm_handle,
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	493 get_audio_device(this->spec.channels),
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	494 SND_PCM_STREAM_PLAYBACK, SND_PCM_NONBLOCK);
942 41a59de7f2ed Here are patches for SDL12 and SDL_mixer for 4 or 6 channel Sam Lantinga <slouken@libsdl.org> parents: 939 diff changeset	495
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	496 if (status < 0) {
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	497 ALSA_CloseDevice(this);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	498 SDL_SetError("ALSA: Couldn't open audio device: %s",
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	499 ALSA_snd_strerror(status));
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	500 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: 1878 diff changeset	501 }
354 30935e76acb5 Updated ALSA audio support for ALSA 0.9 Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	502
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	503 this->hidden->pcm_handle = pcm_handle;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	504
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	505 /* Figure out what the hardware is capable of */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	506 snd_pcm_hw_params_alloca(&hwparams);
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	507 status = ALSA_snd_pcm_hw_params_any(pcm_handle, hwparams);
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	508 if (status < 0) {
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	509 ALSA_CloseDevice(this);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	510 SDL_SetError("ALSA: Couldn't get hardware config: %s",
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	511 ALSA_snd_strerror(status));
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 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: 1878 diff changeset	513 }
354 30935e76acb5 Updated ALSA audio support for ALSA 0.9 Sam Lantinga <slouken@libsdl.org> parents: 297 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: 1878 diff changeset	515 /* SDL only uses interleaved sample output */
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	516 status = ALSA_snd_pcm_hw_params_set_access(pcm_handle, hwparams,
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	517 SND_PCM_ACCESS_RW_INTERLEAVED);
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	518 if (status < 0) {
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	519 ALSA_CloseDevice(this);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	520 SDL_SetError("ALSA: Couldn't set interleaved access: %s",
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	521 ALSA_snd_strerror(status));
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	522 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: 1878 diff changeset	523 }
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	524
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	525 /* 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: 1878 diff changeset	526 status = -1;
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	527 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: 1878 diff changeset	528 test_format && (status < 0);) {
2060 866052b01ee5 indent is evil Sam Lantinga <slouken@libsdl.org> parents: 2049 diff changeset	529 status = 0; /* if we can't support a format, it'll become -1. */
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	530 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: 1878 diff changeset	531 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: 1878 diff changeset	532 format = SND_PCM_FORMAT_U8;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	533 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	534 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: 1878 diff changeset	535 format = SND_PCM_FORMAT_S8;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	536 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	537 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: 1878 diff changeset	538 format = SND_PCM_FORMAT_S16_LE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	539 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	540 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: 1878 diff changeset	541 format = SND_PCM_FORMAT_S16_BE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	542 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	543 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: 1878 diff changeset	544 format = SND_PCM_FORMAT_U16_LE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	545 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	546 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: 1878 diff changeset	547 format = SND_PCM_FORMAT_U16_BE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	548 break;
1995 0ca6ba107642 ALSA backend can handle int32 and float32 data directly. Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	549 case AUDIO_S32LSB:
2010 39897da56f63 Whoops, wrong tokens for int32 support in ALSA driver (specified unsigned Ryan C. Gordon <icculus@icculus.org> parents: 2009 diff changeset	550 format = SND_PCM_FORMAT_S32_LE;
1995 0ca6ba107642 ALSA backend can handle int32 and float32 data directly. Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	551 break;
0ca6ba107642 ALSA backend can handle int32 and float32 data directly. Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	552 case AUDIO_S32MSB:
2010 39897da56f63 Whoops, wrong tokens for int32 support in ALSA driver (specified unsigned Ryan C. Gordon <icculus@icculus.org> parents: 2009 diff changeset	553 format = SND_PCM_FORMAT_S32_BE;
1995 0ca6ba107642 ALSA backend can handle int32 and float32 data directly. Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	554 break;
0ca6ba107642 ALSA backend can handle int32 and float32 data directly. Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	555 case AUDIO_F32LSB:
0ca6ba107642 ALSA backend can handle int32 and float32 data directly. Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	556 format = SND_PCM_FORMAT_FLOAT_LE;
0ca6ba107642 ALSA backend can handle int32 and float32 data directly. Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	557 break;
0ca6ba107642 ALSA backend can handle int32 and float32 data directly. Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	558 case AUDIO_F32MSB:
0ca6ba107642 ALSA backend can handle int32 and float32 data directly. Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	559 format = SND_PCM_FORMAT_FLOAT_BE;
0ca6ba107642 ALSA backend can handle int32 and float32 data directly. Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	560 break;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	561 default:
2009 f2058fb367e4 ALSA was testing if (format) was set to zero as an error condition, but Ryan C. Gordon <icculus@icculus.org> parents: 1995 diff changeset	562 status = -1;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	563 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	564 }
2009 f2058fb367e4 ALSA was testing if (format) was set to zero as an error condition, but Ryan C. Gordon <icculus@icculus.org> parents: 1995 diff changeset	565 if (status >= 0) {
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	566 status = ALSA_snd_pcm_hw_params_set_format(pcm_handle,
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	567 hwparams, 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: 1878 diff changeset	568 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	569 if (status < 0) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	570 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: 1878 diff changeset	571 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	572 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	573 if (status < 0) {
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	574 ALSA_CloseDevice(this);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	575 SDL_SetError("ALSA: Couldn't find any hardware audio formats");
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	576 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: 1878 diff changeset	577 }
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	578 this->spec.format = test_format;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	579
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	580 /* Set the number of channels */
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	581 status = ALSA_snd_pcm_hw_params_set_channels(pcm_handle, hwparams,
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	582 this->spec.channels);
3362 4e83cdb58134 Merged r4990:4991 from branches/SDL-1.2: ALSA 1.0 API and dlvsym() removal. Ryan C. Gordon <icculus@icculus.org> parents: 3068 diff changeset	583 channels = 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: 1878 diff changeset	584 if (status < 0) {
3362 4e83cdb58134 Merged r4990:4991 from branches/SDL-1.2: ALSA 1.0 API and dlvsym() removal. Ryan C. Gordon <icculus@icculus.org> parents: 3068 diff changeset	585 status = ALSA_snd_pcm_hw_params_get_channels(hwparams, &channels);
4e83cdb58134 Merged r4990:4991 from branches/SDL-1.2: ALSA 1.0 API and dlvsym() removal. Ryan C. Gordon <icculus@icculus.org> parents: 3068 diff changeset	586 if (status < 0) {
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	587 ALSA_CloseDevice(this);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	588 SDL_SetError("ALSA: Couldn't set audio channels");
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	589 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: 1878 diff changeset	590 }
3362 4e83cdb58134 Merged r4990:4991 from branches/SDL-1.2: ALSA 1.0 API and dlvsym() removal. Ryan C. Gordon <icculus@icculus.org> parents: 3068 diff changeset	591 this->spec.channels = 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: 1878 diff changeset	592 }
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	593
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	594 /* Set the audio rate */
3362 4e83cdb58134 Merged r4990:4991 from branches/SDL-1.2: ALSA 1.0 API and dlvsym() removal. Ryan C. Gordon <icculus@icculus.org> parents: 3068 diff changeset	595 rate = this->spec.freq;
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	596 status = ALSA_snd_pcm_hw_params_set_rate_near(pcm_handle, hwparams,
3362 4e83cdb58134 Merged r4990:4991 from branches/SDL-1.2: ALSA 1.0 API and dlvsym() removal. Ryan C. Gordon <icculus@icculus.org> parents: 3068 diff changeset	597 &rate, 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: 1878 diff changeset	598 if (status < 0) {
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	599 ALSA_CloseDevice(this);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	600 SDL_SetError("ALSA: Couldn't set audio frequency: %s",
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	601 ALSA_snd_strerror(status));
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	602 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: 1878 diff changeset	603 }
3362 4e83cdb58134 Merged r4990:4991 from branches/SDL-1.2: ALSA 1.0 API and dlvsym() removal. Ryan C. Gordon <icculus@icculus.org> parents: 3068 diff changeset	604 this->spec.freq = rate;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	605
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	606 /* Set the buffer size, in samples */
3627 631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	607 if ( ALSA_set_period_size(this, hwparams, 0) < 0 &&
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	608 ALSA_set_buffer_size(this, hwparams, 0) < 0 ) {
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	609 /* Failed to set desired buffer size, do the best you can... */
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	610 if ( ALSA_set_period_size(this, hwparams, 1) < 0 ) {
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	611 ALSA_CloseDevice(this);
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	612 SDL_SetError("Couldn't set hardware audio parameters: %s", ALSA_snd_strerror(status));
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	613 return(-1);
631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	614 }
3362 4e83cdb58134 Merged r4990:4991 from branches/SDL-1.2: ALSA 1.0 API and dlvsym() removal. Ryan C. Gordon <icculus@icculus.org> parents: 3068 diff changeset	615 }
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	616 /* Set the software parameters */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	617 snd_pcm_sw_params_alloca(&swparams);
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	618 status = ALSA_snd_pcm_sw_params_current(pcm_handle, swparams);
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	619 if (status < 0) {
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	620 ALSA_CloseDevice(this);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	621 SDL_SetError("ALSA: Couldn't get software config: %s",
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	622 ALSA_snd_strerror(status));
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	623 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: 1878 diff changeset	624 }
2060 866052b01ee5 indent is evil Sam Lantinga <slouken@libsdl.org> parents: 2049 diff changeset	625 status =
3627 631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	626 ALSA_snd_pcm_sw_params_set_start_threshold(pcm_handle, swparams, 1);
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	627 if (status < 0) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	628 ALSA_CloseDevice(this);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	629 SDL_SetError("ALSA: Couldn't set start threshold: %s",
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	630 ALSA_snd_strerror(status));
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	631 return 0;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	632 }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	633 status = ALSA_snd_pcm_sw_params(pcm_handle, swparams);
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	634 if (status < 0) {
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	635 ALSA_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: 1878 diff changeset	636 SDL_SetError("Couldn't set software audio parameters: %s",
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	637 ALSA_snd_strerror(status));
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	638 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: 1878 diff changeset	639 }
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	640
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	641 /* Calculate the final parameters for this audio specification */
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	642 SDL_CalculateAudioSpec(&this->spec);
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	643
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	644 /* Allocate mixing buffer */
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	645 this->hidden->mixlen = this->spec.size;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	646 this->hidden->mixbuf = (Uint8 *) SDL_AllocAudioMem(this->hidden->mixlen);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	647 if (this->hidden->mixbuf == NULL) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	648 ALSA_CloseDevice(this);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	649 SDL_OutOfMemory();
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	650 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: 1878 diff changeset	651 }
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	652 SDL_memset(this->hidden->mixbuf, this->spec.silence, this->spec.size);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	653
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	654 /* Switch to blocking mode for playback */
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	655 ALSA_snd_pcm_nonblock(pcm_handle, 0);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	656
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	657 /* We're ready to rock and roll. :-) */
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	658 return 1;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	659 }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	660
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	661 static void
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	662 ALSA_Deinitialize(void)
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	663 {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	664 UnloadALSALibrary();
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	665 }
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	666
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	667 static int
2060 866052b01ee5 indent is evil Sam Lantinga <slouken@libsdl.org> parents: 2049 diff changeset	668 ALSA_Init(SDL_AudioDriverImpl * impl)
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	669 {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	670 if (LoadALSALibrary() < 0) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	671 return 0;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	672 }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	673
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	674 /* Set the function pointers */
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	675 impl->OpenDevice = ALSA_OpenDevice;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	676 impl->WaitDevice = ALSA_WaitDevice;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	677 impl->GetDeviceBuf = ALSA_GetDeviceBuf;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	678 impl->PlayDevice = ALSA_PlayDevice;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	679 impl->CloseDevice = ALSA_CloseDevice;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	680 impl->Deinitialize = ALSA_Deinitialize;
2060 866052b01ee5 indent is evil Sam Lantinga <slouken@libsdl.org> parents: 2049 diff changeset	681 impl->OnlyHasDefaultOutputDevice = 1; /* !!! FIXME: Add device enum! */
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	682
3699 4160ba33b597 Removed test for "driver is valid, but doesn't see any audio devices." Ryan C. Gordon <icculus@icculus.org> parents: 3697 diff changeset	683 return 1; /* this audio target is available. */
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	684 }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	685
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	686
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	687 AudioBootStrap ALSA_bootstrap = {
3627 631173ffd68f Merged r4991:5154 from branches/SDL-1.2/src/audio/alsa: many 1.2.14 ALSA fixes. Ryan C. Gordon <icculus@icculus.org> parents: 3362 diff changeset	688 DRIVER_NAME, "ALSA PCM audio", ALSA_Init, 0
2049 5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	689 };
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk. Ryan C. Gordon <icculus@icculus.org> parents: 2043 diff changeset	690
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	691 /* vi: set ts=4 sw=4 expandtab: */

Mercurial > sdl-ios-xcode

annotate src/audio/alsa/SDL_alsa_audio.c @ 4639:f5cd4b6231ba