easyflac.c 11.8 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375
/* EasyFLAC - A thin decoding wrapper around libFLAC and libOggFLAC to
 * make your code less ugly.  See easyflac.h for explanation.
 *
 * Copyright 2003 - Stan Seibert <volsung@xiph.org>
 * This code is licensed under a BSD style license:
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 * - Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *
 * - Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution.
 *
 * - Neither the name of the Xiph.org Foundation nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION
 * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 */

#include <stdlib.h>
#include "easyflac.h"


FLAC__bool EasyFLAC__is_oggflac(EasyFLAC__StreamDecoder *decoder)
{
	return decoder->is_oggflac;
}


EasyFLAC__StreamDecoder *EasyFLAC__stream_decoder_new(FLAC__bool is_oggflac)
{
	EasyFLAC__StreamDecoder *decoder = malloc(sizeof(EasyFLAC__StreamDecoder));

	if (decoder != NULL)
	{
		decoder->is_oggflac = is_oggflac;
		
		if (decoder->is_oggflac)
			decoder->oggflac = OggFLAC__stream_decoder_new();
		else
			decoder->flac = FLAC__stream_decoder_new();

		if (  (decoder->is_oggflac && decoder->oggflac == NULL)
		    ||(!decoder->is_oggflac && decoder->flac == NULL)  )
		{
			free(decoder);
			decoder = NULL;
		}
	}

	return decoder;
}


void EasyFLAC__stream_decoder_delete(EasyFLAC__StreamDecoder *decoder)
{
	if (decoder->is_oggflac)
		OggFLAC__stream_decoder_delete(decoder->oggflac);
	else
		FLAC__stream_decoder_delete(decoder->flac);

	free(decoder);
}


/* Wrappers around the callbacks for OggFLAC */

FLAC__StreamDecoderReadStatus oggflac_read_callback(const OggFLAC__StreamDecoder *decoder, FLAC__byte buffer[], unsigned *bytes, void *client_data)
{
	EasyFLAC__StreamDecoder *e_decoder = (EasyFLAC__StreamDecoder *) client_data;

	return (*e_decoder->callbacks.read)(e_decoder, buffer, bytes, e_decoder->callbacks.client_data);
}


FLAC__StreamDecoderWriteStatus oggflac_write_callback(const OggFLAC__StreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data)
{
	EasyFLAC__StreamDecoder *e_decoder = (EasyFLAC__StreamDecoder *) client_data;

	return (*(e_decoder->callbacks.write))(e_decoder, frame, buffer, e_decoder->callbacks.client_data);
}


void oggflac_metadata_callback(const OggFLAC__StreamDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data)
{
	EasyFLAC__StreamDecoder *e_decoder = (EasyFLAC__StreamDecoder *) client_data;

	(*e_decoder->callbacks.metadata)(e_decoder, metadata, e_decoder->callbacks.client_data);
}


void oggflac_error_callback(const OggFLAC__StreamDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data)
{
	EasyFLAC__StreamDecoder *e_decoder = (EasyFLAC__StreamDecoder *) client_data;

	(*e_decoder->callbacks.error)(e_decoder, status, e_decoder->callbacks.client_data);
}


/* Wrappers around the callbacks for FLAC */

FLAC__StreamDecoderReadStatus flac_read_callback(const FLAC__StreamDecoder *decoder, FLAC__byte buffer[], unsigned *bytes, void *client_data)
{
	EasyFLAC__StreamDecoder *e_decoder = (EasyFLAC__StreamDecoder *) client_data;

	return (*e_decoder->callbacks.read)(e_decoder, buffer, bytes, e_decoder->callbacks.client_data);
}


FLAC__StreamDecoderWriteStatus flac_write_callback(const FLAC__StreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data)
{
	EasyFLAC__StreamDecoder *e_decoder = (EasyFLAC__StreamDecoder *) client_data;

	return (*e_decoder->callbacks.write)(e_decoder, frame, buffer, e_decoder->callbacks.client_data);
}


void flac_metadata_callback(const FLAC__StreamDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data)
{
	EasyFLAC__StreamDecoder *e_decoder = (EasyFLAC__StreamDecoder *) client_data;

	(*e_decoder->callbacks.metadata)(e_decoder, metadata, e_decoder->callbacks.client_data);
}


void flac_error_callback(const FLAC__StreamDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data)
{
	EasyFLAC__StreamDecoder *e_decoder = (EasyFLAC__StreamDecoder *) client_data;

	(*e_decoder->callbacks.error)(e_decoder, status, e_decoder->callbacks.client_data);
}


FLAC__bool EasyFLAC__set_read_callback(EasyFLAC__StreamDecoder *decoder, EasyFLAC__StreamDecoderReadCallback value)
{
	decoder->callbacks.read = value;

	if (decoder->is_oggflac)
		return OggFLAC__stream_decoder_set_read_callback(decoder->oggflac, &oggflac_read_callback);
	else
		return FLAC__stream_decoder_set_read_callback(decoder->flac, &flac_read_callback);
}


FLAC__bool EasyFLAC__set_write_callback(EasyFLAC__StreamDecoder *decoder, EasyFLAC__StreamDecoderWriteCallback value)
{
	decoder->callbacks.write = value;

	if (decoder->is_oggflac)
		return OggFLAC__stream_decoder_set_write_callback(decoder->oggflac, &oggflac_write_callback);
	else
		return FLAC__stream_decoder_set_write_callback(decoder->flac, &flac_write_callback);
}


FLAC__bool EasyFLAC__set_metadata_callback(EasyFLAC__StreamDecoder *decoder, EasyFLAC__StreamDecoderMetadataCallback value)
{
	decoder->callbacks.metadata = value;

	if (decoder->is_oggflac)
		return OggFLAC__stream_decoder_set_metadata_callback(decoder->oggflac, &oggflac_metadata_callback);
	else
		return FLAC__stream_decoder_set_metadata_callback(decoder->flac, &flac_metadata_callback);
}


FLAC__bool EasyFLAC__set_error_callback(EasyFLAC__StreamDecoder *decoder, EasyFLAC__StreamDecoderErrorCallback value)
{
	decoder->callbacks.error = value;

	if (decoder->is_oggflac)
		return OggFLAC__stream_decoder_set_error_callback(decoder->oggflac, &oggflac_error_callback);
	else
		return FLAC__stream_decoder_set_error_callback(decoder->flac, &flac_error_callback);
}


FLAC__bool EasyFLAC__set_client_data(EasyFLAC__StreamDecoder *decoder, void *value)
{
	decoder->callbacks.client_data = value;
	
	if (decoder->is_oggflac)
		return OggFLAC__stream_decoder_set_client_data(decoder->oggflac, decoder);
	else
		return FLAC__stream_decoder_set_client_data(decoder->flac, decoder);
}


FLAC__bool EasyFLAC__set_metadata_respond(EasyFLAC__StreamDecoder *decoder, FLAC__MetadataType type)
{
	if (decoder->is_oggflac)
		return OggFLAC__stream_decoder_set_metadata_respond(decoder->oggflac, type);
	else
		return FLAC__stream_decoder_set_metadata_respond(decoder->flac, type);
}


FLAC__bool EasyFLAC__set_metadata_respond_application(EasyFLAC__StreamDecoder *decoder, const FLAC__byte id[4])
{
	if (decoder->is_oggflac)
		return OggFLAC__stream_decoder_set_metadata_respond_application(decoder->oggflac, id);
	else
		return FLAC__stream_decoder_set_metadata_respond_application(decoder->flac, id);
}


FLAC__bool EasyFLAC__set_metadata_respond_all(EasyFLAC__StreamDecoder *decoder)
{
	if (decoder->is_oggflac)
		return OggFLAC__stream_decoder_set_metadata_respond_all(decoder->oggflac);
	else
		return FLAC__stream_decoder_set_metadata_respond_all(decoder->flac);
}


FLAC__bool EasyFLAC__set_metadata_ignore(EasyFLAC__StreamDecoder *decoder, FLAC__MetadataType type)
{
	if (decoder->is_oggflac)
		return OggFLAC__stream_decoder_set_metadata_ignore(decoder->oggflac, type);
	else
		return FLAC__stream_decoder_set_metadata_ignore(decoder->flac, type);
}


FLAC__bool EasyFLAC__set_metadata_ignore_application(EasyFLAC__StreamDecoder *decoder, const FLAC__byte id[4])
{
	if (decoder->is_oggflac)
		return OggFLAC__stream_decoder_set_metadata_ignore_application(decoder->oggflac, id);
	else
		return FLAC__stream_decoder_set_metadata_ignore_application(decoder->flac, id);
}

FLAC__bool EasyFLAC__set_metadata_ignore_all(EasyFLAC__StreamDecoder *decoder)
{
	if (decoder->is_oggflac)
		return OggFLAC__stream_decoder_set_metadata_ignore_all(decoder->oggflac);
	else
		return FLAC__stream_decoder_set_metadata_ignore_all(decoder->flac);
}


FLAC__StreamDecoderState EasyFLAC__get_state(const EasyFLAC__StreamDecoder *decoder)
{
	if (decoder->is_oggflac)
		return OggFLAC__stream_decoder_get_FLAC_stream_decoder_state(decoder->oggflac);
	else
		return FLAC__stream_decoder_get_state(decoder->flac);
}


unsigned EasyFLAC__get_channels(const EasyFLAC__StreamDecoder *decoder)
{
	if (decoder->is_oggflac)
		return OggFLAC__stream_decoder_get_channels(decoder->oggflac);
	else
		return FLAC__stream_decoder_get_channels(decoder->flac);
}


FLAC__ChannelAssignment EasyFLAC__get_channel_assignment(const EasyFLAC__StreamDecoder *decoder)
{
	if (decoder->is_oggflac)
		return OggFLAC__stream_decoder_get_channel_assignment(decoder->oggflac);
	else
		return FLAC__stream_decoder_get_channel_assignment(decoder->flac);
}


unsigned EasyFLAC__get_bits_per_sample(const EasyFLAC__StreamDecoder *decoder)
{
	if (decoder->is_oggflac)
		return OggFLAC__stream_decoder_get_bits_per_sample(decoder->oggflac);
	else
		return FLAC__stream_decoder_get_bits_per_sample(decoder->flac);
}


unsigned EasyFLAC__get_sample_rate(const EasyFLAC__StreamDecoder *decoder)
{
	if (decoder->is_oggflac)
		return OggFLAC__stream_decoder_get_sample_rate(decoder->oggflac);
	else
		return FLAC__stream_decoder_get_sample_rate(decoder->flac);
}


unsigned EasyFLAC__get_blocksize(const EasyFLAC__StreamDecoder *decoder)
{
	if (decoder->is_oggflac)
		return OggFLAC__stream_decoder_get_blocksize(decoder->oggflac);
	else
		return FLAC__stream_decoder_get_blocksize(decoder->flac);
}


FLAC__StreamDecoderState EasyFLAC__init(EasyFLAC__StreamDecoder *decoder)
{
	if (decoder->is_oggflac)
	{
		OggFLAC__stream_decoder_init(decoder->oggflac);
		return OggFLAC__stream_decoder_get_FLAC_stream_decoder_state(decoder->oggflac);
	}
	else
		return FLAC__stream_decoder_init(decoder->flac);
}


void EasyFLAC__finish(EasyFLAC__StreamDecoder *decoder)
{
	if (decoder->is_oggflac)
		OggFLAC__stream_decoder_finish(decoder->oggflac);
	else
		FLAC__stream_decoder_finish(decoder->flac);
}


FLAC__bool EasyFLAC__flush(EasyFLAC__StreamDecoder *decoder)
{
	if (decoder->is_oggflac)
		return OggFLAC__stream_decoder_flush(decoder->oggflac);
	else
		return FLAC__stream_decoder_flush(decoder->flac);
}


FLAC__bool EasyFLAC__reset(EasyFLAC__StreamDecoder *decoder)
{
	if (decoder->is_oggflac)
		return OggFLAC__stream_decoder_reset(decoder->oggflac);
	else
		return FLAC__stream_decoder_reset(decoder->flac);
}


FLAC__bool EasyFLAC__process_single(EasyFLAC__StreamDecoder *decoder)
{
	if (decoder->is_oggflac)
		return OggFLAC__stream_decoder_process_single(decoder->oggflac);
	else
		return FLAC__stream_decoder_process_single(decoder->flac);
}


FLAC__bool EasyFLAC__process_until_end_of_metadata(EasyFLAC__StreamDecoder *decoder)
{
	if (decoder->is_oggflac)
		return OggFLAC__stream_decoder_process_until_end_of_metadata(decoder->oggflac);
	else
		return FLAC__stream_decoder_process_until_end_of_metadata(decoder->flac);
}


FLAC__bool EasyFLAC__process_until_end_of_stream(EasyFLAC__StreamDecoder *decoder)
{
	if (decoder->is_oggflac)
		return OggFLAC__stream_decoder_process_until_end_of_stream(decoder->oggflac);
	else
		return FLAC__stream_decoder_process_until_end_of_stream(decoder->flac);
}