+++ /dev/null
-/*
- * audio_out_aif.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"
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <errno.h>
-#include <inttypes.h>
-
-#include "a52.h"
-#include "audio_out.h"
-#include "audio_out_internal.h"
-
-typedef struct aif_instance_s {
- ao_instance_t ao;
- int sample_rate;
- int set_params;
- int flags;
- int size;
-} aif_instance_t;
-
-static uint8_t aif_header[] = {
- 'F', 'O', 'R', 'M', 0xff, 0xff, 0xff, 0xfe, 'A', 'I', 'F', 'F',
- 'C', 'O', 'M', 'M', 0, 0, 0, 18,
- 0, 2, 0x3f, 0xff, 0xff, 0xf4, 0, 16, 0x40, 0x0e, -1, -1, 0, 0, 0, 0, 0, 0,
- 'S', 'S', 'N', 'D', 0xff, 0xff, 0xff, 0xd8, 0, 0, 0, 0, 0, 0, 0, 0
-};
-
-int aif_setup (ao_instance_t * _instance, int sample_rate, int * flags,
- sample_t * level, sample_t * bias)
-{
- aif_instance_t * instance = (aif_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 void store4 (uint8_t * buf, int value)
-{
- buf[0] = value >> 24;
- buf[1] = value >> 16;
- buf[2] = value >> 8;
- buf[3] = value;
-}
-
-static void store2 (uint8_t * buf, int16_t value)
-{
- buf[0] = value >> 8;
- buf[1] = value;
-}
-
-int aif_play (ao_instance_t * _instance, int flags, sample_t * _samples)
-{
- aif_instance_t * instance = (aif_instance_t *) _instance;
- int16_t int16_samples[256*2];
-
-#ifdef LIBA52_DOUBLE
- float samples[256 * 2];
- int i;
-
- for (i = 0; i < 256 * 2; i++)
- samples[i] = _samples[i];
-#else
- float * samples = _samples;
-#endif
-
- if (instance->set_params) {
- instance->set_params = 0;
- store2 (aif_header + 30, instance->sample_rate);
- fwrite (aif_header, sizeof (aif_header), 1, stdout);
- }
-
- float2s16_2 (samples, int16_samples);
- s16_BE (int16_samples, 2);
- fwrite (int16_samples, 256 * sizeof (int16_t) * 2, 1, stdout);
-
- instance->size += 256 * sizeof (int16_t) * 2;
-
- return 0;
-}
-
-void aif_close (ao_instance_t * _instance)
-{
- aif_instance_t * instance = (aif_instance_t *) _instance;
-
- if (fseek (stdout, 0, SEEK_SET) < 0)
- return;
-
- store4 (aif_header + 4, instance->size + 46);
- store4 (aif_header + 22, instance->size / 4);
- store4 (aif_header + 42, instance->size + 8);
- fwrite (aif_header, sizeof (aif_header), 1, stdout);
-}
-
-ao_instance_t * aif_open (int flags)
-{
- aif_instance_t * instance;
-
- instance = malloc (sizeof (aif_instance_t));
- if (instance == NULL)
- return NULL;
-
- instance->ao.setup = aif_setup;
- instance->ao.play = aif_play;
- instance->ao.close = aif_close;
-
- instance->sample_rate = 0;
- instance->set_params = 1;
- instance->flags = flags;
- instance->size = 0;
-
- return (ao_instance_t *) instance;
-}
-
-ao_instance_t * ao_aif_open (void)
-{
- return aif_open (A52_STEREO);
-}
-
-ao_instance_t * ao_aifdolby_open (void)
-{
- return aif_open (A52_DOLBY);
-}