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Diffstat (limited to 'libao/src/src/ao_raw.c')
| -rw-r--r-- | libao/src/src/ao_raw.c | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/libao/src/src/ao_raw.c b/libao/src/src/ao_raw.c new file mode 100644 index 0000000..50b21be --- /dev/null +++ b/libao/src/src/ao_raw.c @@ -0,0 +1,160 @@ +/* + * + * ao_raw.c + * + * Copyright (C) Stan Seibert - January 2001, July 2001 + * + * This file is part of libao, a cross-platform audio output library. See + * README for a history of this source code. + * + * 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_raw.c 17718 2010-12-06 20:09:29Z xiphmont $ + + ********************************************************************/ + +#include <stdio.h> +#include <string.h> +#include <errno.h> +#include <ao/ao.h> +#include <ao/plugin.h> + +static char *ao_raw_options[] = {"byteorder","matrix","verbose","quiet","debug"}; +static ao_info ao_raw_info = +{ + AO_TYPE_FILE, + "RAW sample output", + "raw", + "Stan Seibert <indigo@aztec.asu.edu>", + "Writes raw audio samples to a file", + AO_FMT_NATIVE, + 0, + ao_raw_options, + sizeof(ao_raw_options)/sizeof(*ao_raw_options) +}; + +typedef struct ao_raw_internal +{ + int byte_order; +} ao_raw_internal; + + +static int ao_raw_test(void) +{ + return 1; /* Always works */ +} + + +static ao_info *ao_raw_driver_info(void) +{ + return &ao_raw_info; +} + + +static int ao_raw_device_init(ao_device *device) +{ + ao_raw_internal *internal; + + internal = (ao_raw_internal *) malloc(sizeof(ao_raw_internal)); + + if (internal == NULL) + return 0; /* Could not initialize device memory */ + + internal->byte_order = AO_FMT_NATIVE; + + device->internal = internal; + device->output_matrix_order = AO_OUTPUT_MATRIX_FIXED; + + return 1; /* Memory alloc successful */ +} + +static int ao_raw_set_option(ao_device *device, const char *key, + const char *value) +{ + ao_raw_internal *internal = (ao_raw_internal *)device->internal; + + if (!strcmp(key, "byteorder")) { + if (!strcmp(value, "native")) + internal->byte_order = AO_FMT_NATIVE; + else if (!strcmp(value, "big")) + internal->byte_order = AO_FMT_BIG; + else if (!strcmp(value, "little")) + internal->byte_order = AO_FMT_LITTLE; + else + return 0; /* Bad option value */ + } + + return 1; +} + + +static int ao_raw_open(ao_device *device, ao_sample_format *format) +{ + ao_raw_internal *internal = (ao_raw_internal *)device->internal; + + device->driver_byte_format = internal->byte_order; + + //if(!device->inter_matrix){ + ///* by default, inter == in */ + //if(format->matrix) + // device->inter_matrix = strdup(format->matrix); + //} + + return 1; +} + + +/* + * play the sample to the already opened file descriptor + */ +static int ao_raw_play(ao_device *device, const char *output_samples, + uint_32 num_bytes) +{ + if (fwrite(output_samples, sizeof(char), num_bytes, + device->file) < num_bytes) + return 0; + else + return 1; +} + + +static int ao_raw_close(ao_device *device) +{ + /* No closeout needed */ + return 1; +} + + +static void ao_raw_device_clear(ao_device *device) +{ + ao_raw_internal *internal = (ao_raw_internal *) device->internal; + + free(internal); + device->internal=NULL; +} + + +ao_functions ao_raw = { + ao_raw_test, + ao_raw_driver_info, + ao_raw_device_init, + ao_raw_set_option, + ao_raw_open, + ao_raw_play, + ao_raw_close, + ao_raw_device_clear +}; |