diff options
Diffstat (limited to 'libao/src/src/ao_aixs.c')
| -rw-r--r-- | libao/src/src/ao_aixs.c | 256 |
1 files changed, 256 insertions, 0 deletions
diff --git a/libao/src/src/ao_aixs.c b/libao/src/src/ao_aixs.c new file mode 100644 index 0000000..d8ba6ed --- /dev/null +++ b/libao/src/src/ao_aixs.c @@ -0,0 +1,256 @@ +/* + * + * ao_aixs.c AIX (5.1) + * + * Original Copyright (C) Stefan Tibus - August 2002 + * + * libao 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, or (at your option) + * any later version. + * + * libao 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 GNU Make; see the file COPYING. If not, write to + * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. + * + ******************************************************************** + + last mod: $Id: ao_aixs.c 17718 2010-12-06 20:09:29Z xiphmont $ + + ********************************************************************/ + +#ifdef HAVE_SYS_AUDIO_H + +#include <sys/types.h> +#include <sys/ioctl.h> +#include <errno.h> +#include <fcntl.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <sys/audio.h> + +#include <ao/ao.h> +#include <ao/plugin.h> + + +/* + * default audio device to be used, + * possible options: + * /dev/paud0/1 on PCI machines with the Crystal chipset + * /dev/baud0/1 on MCA machines with the Crystal chipset + * /dev/acpa0/1 on MCA machines with the ACPA + */ +#ifndef AO_AIX_DEFAULT_DEV +#define AO_AIX_DEFAULT_DEV "/dev/baud0/1" +#define AO_AIX_DEFAULT_DEV2 "/dev/paud0/1" +#define AO_AIX_DEFAULT_DEV3 "/dev/acpa0/1" +#endif + + +static char *ao_aixs_options[] = {"dev","id","matrix","verbose","quiet","debug"}; +ao_info ao_aixs_info = { + AO_TYPE_LIVE, + "AIX audio driver output", + "aixs", + "Stefan Tibus <sjti@gmx.net>", + "Outputs to the AIX audio system.", + AO_FMT_NATIVE, + 20, + ao_aixs_options, + sizeof(ao_aixs_options)/sizeof(*ao_aixs_options) +}; + + +typedef struct ao_aixs_internal { + char *dev; + int id; + int fd; +} ao_aixs_internal; + + +int ao_aixs_test() +{ + int fd; + + fd = open(AO_AIX_DEFAULT_DEV, O_WRONLY); + if(fd<0) + fd = open(AO_AIX_DEFAULT_DEV2, O_WRONLY); + if(fd<0) + fd = open(AO_AIX_DEFAULT_DEV3, O_WRONLY); + if(fd<0) + return 0; /* Cannot use this plugin with default parameters */ + + close(fd); + return 1; /* This plugin works in default mode */ +} + + +ao_info *ao_aixs_driver_info(void) +{ + return &ao_aixs_info; +} + + +int ao_aixs_device_init(ao_device *device) +{ + ao_aixs_internal *internal; + + internal = (ao_aixs_internal *) calloc(1,sizeof(ao_aixs_internal)); + + if (internal == NULL) + return 0; /* Could not initialize device memory */ + + device->internal = internal; + device->output_matrix_order = AO_OUTPUT_MATRIX_FIXED; + + return 1; /* Memory alloc successful */ +} + +int ao_aixs_set_option(ao_device *device, const char *key, const char *value) +{ + ao_aixs_internal *internal = (ao_aixs_internal *) device->internal; + + if (!strcmp(key, "dev")) { + if(internal->dev) + free(internal->dev); + internal->dev = strdup(value); + } + if (!strcmp(key, "id")) { + internal->id = atoi(value); + if(internal->dev) + free(internal->dev); + internal->dev = NULL; + } + + return 1; +} + + +int ao_aixs_open(ao_device *device, ao_sample_format *format) +{ + ao_aixs_internal *internal = (ao_aixs_internal *) device->internal; + + audio_init init; + audio_control control; + audio_change change; + + if(!internal->dev){ + char buffer[80]; + int fd; + + sprintf(buffer,"/dev/baud%d/1",id); + fd = open(buffer, O_WRONLY); + if(fd<0){ + sprintf(buffer,"/dev/paud%d/1",id); + fd = open(buffer, O_WRONLY); + } + if(fd<0){ + sprintf(buffer,"/dev/acpa%d/1",id); + fd = open(buffer, O_WRONLY); + } + if(fd<0) return 0; + internal->fd = fd; + internal->dev = strdup(buffer); + }else + if ( (internal->fd = open(internal->dev, O_WRONLY)) < 0 ) + return 0; + + init.srate = format->rate; + init.bits_per_sample = format->bits; + init.channels = device->output_channels; + init.mode = AUDIO_PCM; + init.flags = AUDIO_BIG_ENDIAN | AUDIO_TWOS_COMPLEMENT; + init.operation = AUDIO_PLAY; + + if (ioctl(internal->fd, AUDIO_INIT, &init) < 0) { + close(internal->fd); + return 0; /* Unsupported audio format */ + } + + change.balance = 0x3fff0000; + change.volume = 0x3fff0000; + change.monitor = AUDIO_IGNORE; + change.input = AUDIO_IGNORE; + change.output = AUDIO_OUTPUT_1; + + control.ioctl_request = AUDIO_CHANGE; + control.position = 0; + control.request_info = &change; + + if (ioctl(internal->fd, AUDIO_CONTROL, &control) < 0) { + close(internal->fd); + return 0; + } + + control.ioctl_request = AUDIO_START; + control.request_info = NULL; + + if (ioctl(internal->fd, AUDIO_CONTROL, &control) < 0) { + close(internal->fd); + return 0; + } + + device->driver_byte_format = AO_FMT_NATIVE; + if(!device->inter_matrix){ + /* set up matrix such that users are warned about > stereo playback */ + if(device->output_channels<=2) + device->inter_matrix=strdup("L,R"); + //else no matrix, which results in a warning + } + + return 1; +} + + +int ao_aixs_play(ao_device *device, const char *output_samples, + uint_32 num_bytes) +{ + ao_aixs_internal *internal = (ao_aixs_internal *) device->internal; + + if (write(internal->fd, output_samples, num_bytes) < 0) + return 0; + else + return 1; +} + + +int ao_aixs_close(ao_device *device) +{ + ao_aixs_internal *internal = (ao_aixs_internal *) device->internal; + + if(internal->fd) + close(internal->fd); + internal->fd=-1; + return 1; +} + + +void ao_aixs_device_clear(ao_device *device) +{ + ao_aixs_internal *internal = (ao_aixs_internal *) device->internal; + + if(internal->dev) + free(internal->dev); + free(internal); + device->internal = NULL; +} + +ao_functions ao_aixs = { + ao_aixs_test, + ao_aixs_driver_info, + ao_aixs_device_init, + ao_aixs_set_option, + ao_aixs_open, + ao_aixs_play, + ao_aixs_close, + ao_aixs_device_clear +}; + +#endif |