mirror of
https://github.com/cookiengineer/audacity
synced 2025-04-30 07:39:42 +02:00
85 lines
2.4 KiB
C
85 lines
2.4 KiB
C
/*
|
|
* TwoLAME: an optimized MPEG Audio Layer Two encoder
|
|
*
|
|
* Copyright (C) 2004-2007 The TwoLAME Project
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* This library 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
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*
|
|
* $Id: frontend.h 156 2007-03-20 23:57:35Z nhumfrey $
|
|
*
|
|
*/
|
|
|
|
#include <sndfile.h>
|
|
|
|
|
|
/*
|
|
Constants
|
|
*/
|
|
#define MP2_BUF_SIZE (16384)
|
|
#define AUDIO_BUF_SIZE (9210)
|
|
#define MAX_NAME_SIZE (1024)
|
|
#define OUTPUT_SUFFIX ".mp2"
|
|
#define DEFAULT_CHANNELS (2)
|
|
#define DEFAULT_SAMPLERATE (44100)
|
|
|
|
|
|
/*
|
|
Result codes
|
|
*/
|
|
#define ERR_NO_ERROR (0) // No Error (encoded ok)
|
|
#define ERR_NO_ENCODE (1) // No Error (no encoding performed)
|
|
#define ERR_OPENING_INPUT (2) // Error opening input file
|
|
#define ERR_OPENING_OUTPUT (4) // Error opening output file
|
|
#define ERR_MEM_ALLOC (6) // Error allocating memory
|
|
#define ERR_INVALID_PARAM (8) // Error in chosen encoding parameters
|
|
#define ERR_READING_INPUT (10) // Error reading input
|
|
#define ERR_ENCODING (12) // Error occured during encoding
|
|
#define ERR_WRITING_OUTPUT (14) // Error occured writing to output file
|
|
|
|
|
|
|
|
|
|
typedef struct audioin_s {
|
|
|
|
// Display information about input stream
|
|
void (*print_info) (struct audioin_s *);
|
|
|
|
// Read in some audio
|
|
int (*read) (struct audioin_s *, short *buffer, int samples);
|
|
|
|
// Return error string (if any)
|
|
const char *(*error_str) (struct audioin_s *);
|
|
|
|
// Close the inout stream
|
|
int (*close) (struct audioin_s *);
|
|
|
|
|
|
// Pointer to file / input stream
|
|
void *file;
|
|
|
|
// Pointer to linsndfile info structure
|
|
SF_INFO *sfinfo;
|
|
|
|
// Size of the samples (in bits)
|
|
int samplesize;
|
|
|
|
} audioin_t;
|
|
|
|
|
|
|
|
/* Initialisers */
|
|
audioin_t *open_audioin_sndfile(char *filename, SF_INFO * sfinfo);
|
|
audioin_t *open_audioin_raw(char *filename, SF_INFO * sfinfo, int samplesize);
|