diff options
Diffstat (limited to 'lib/liba52/libao/audio_out_al.c')
| -rw-r--r-- | lib/liba52/libao/audio_out_al.c | 179 |
1 files changed, 0 insertions, 179 deletions
diff --git a/lib/liba52/libao/audio_out_al.c b/lib/liba52/libao/audio_out_al.c deleted file mode 100644 index 8abcdb7342..0000000000 --- a/lib/liba52/libao/audio_out_al.c +++ /dev/null @@ -1,179 +0,0 @@ -/* - * audio_out_al.c - * Copyright (C) 2000-2002 Michel Lespinasse <walken@zoy.org> - * Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca> - * - * This file is part of a52dec, a free ATSC A-52 stream decoder. - * See http://liba52.sourceforge.net/ for updates. - * - * a52dec is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * a52dec is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - -#include "config.h" - -#ifdef LIBAO_AL - -#include <stdio.h> -#include <stdlib.h> -#include <dmedia/audio.h> -#include <inttypes.h> - -#include "a52.h" -#include "audio_out.h" -#include "audio_out_internal.h" - -typedef struct al_instance_s { - ao_instance_t ao; - ALport port; - int sample_rate; - int set_params; - int flags; -} al_instance_t; - -static int al_setup (ao_instance_t * _instance, int sample_rate, int * flags, - sample_t * level, sample_t * bias) -{ - al_instance_t * instance = (al_instance_t *) _instance; - - if ((instance->set_params == 0) && (instance->sample_rate != sample_rate)) - return 1; - instance->sample_rate = sample_rate; - - *flags = instance->flags; - *level = 1; - *bias = 384; - - return 0; -} - -static int al_play (ao_instance_t * _instance, int flags, sample_t * _samples) -{ - al_instance_t * instance = (al_instance_t *) _instance; - int16_t int16_samples[256*6]; - int chans = -1; - -#ifdef LIBA52_DOUBLE - float samples[256 * 6]; - int i; - - for (i = 0; i < 256 * 6; i++) - samples[i] = _samples[i]; -#else - float * samples = _samples; -#endif - - chans = channels_multi (flags); - flags &= A52_CHANNEL_MASK | A52_LFE; - - if (instance->set_params) { - ALconfig config; - ALpv params[2]; - - config = alNewConfig (); - if (!config) { - fprintf (stderr, "alNewConfig failed\n"); - return 1; - } - if (alSetChannels (config, chans)) { - fprintf (stderr, "alSetChannels failed\n"); - return 1; - } - if (alSetConfig (instance->port, config)) { - fprintf (stderr, "alSetConfig failed\n"); - return 1; - } - alFreeConfig (config); - - params[0].param = AL_MASTER_CLOCK; - params[0].value.i = AL_CRYSTAL_MCLK_TYPE; - params[1].param = AL_RATE; - params[1].value.ll = alIntToFixed (instance->sample_rate); - if (alSetParams (alGetResource (instance->port), params, 2) < 0) { - fprintf (stderr, "alSetParams failed\n"); - return 1; - } - - instance->flags = flags; - instance->set_params = 0; - } else if ((flags == A52_DOLBY) && (instance->flags == A52_STEREO)) { - fprintf (stderr, "Switching from stereo to dolby surround\n"); - instance->flags = A52_DOLBY; - } else if ((flags == A52_STEREO) && (instance->flags == A52_DOLBY)) { - fprintf (stderr, "Switching from dolby surround to stereo\n"); - instance->flags = A52_STEREO; - } else if (flags != instance->flags) - return 1; - - float2s16_multi (samples, int16_samples, flags); - alWriteFrames (instance->port, int16_samples, 256); - - return 0; -} - -static void al_close (ao_instance_t * _instance) -{ - al_instance_t * instance = (al_instance_t *) _instance; - - alClosePort (instance->port); -} - -static ao_instance_t * al_open (int flags) -{ - al_instance_t * instance; - int format; - - instance = malloc (sizeof (al_instance_t)); - if (instance == NULL) - return NULL; - - instance->ao.setup = al_setup; - instance->ao.play = al_play; - instance->ao.close = al_close; - - instance->sample_rate = 0; - instance->set_params = 1; - instance->flags = flags; - - instance->port = alOpenPort ("a52dec", "w", 0); - if (instance->port < 0) { - fprintf (stderr, "alOpenPort failed\n"); - free (instance); - return NULL; - } - - return (ao_instance_t *) instance; -} - -ao_instance_t * ao_al_open (void) -{ - return al_open (A52_STEREO); -} - -ao_instance_t * ao_aldolby_open (void) -{ - return al_open (A52_DOLBY); -} - -ao_instance_t * ao_al4_open (void) -{ - return al_open (A52_2F2R); -} - -ao_instance_t * ao_al6_open (void) -{ - return al_open (A52_3F2R | A52_LFE); -} - -#endif |