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

annotate src/audio/alsa/SDL_alsa_audio.c @ 4961:c92950635837

Android has OpenGL ES too...

author	Sam Lantinga <slouken@libsdl.org>
date	Tue, 04 Jan 2011 20:37:07 -0800
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 @ 4961:c92950635837