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pvvx 2016-11-09 03:56:41 +03:00
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project/inc/mad/decoder.h Normal file
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/*
* libmad - MPEG audio decoder library
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
*
* This program 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.
*
* This program 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
*
* $Id: decoder.h,v 1.17 2004/01/23 09:41:32 rob Exp $
*/
# ifndef LIBMAD_DECODER_H
# define LIBMAD_DECODER_H
# include "stream.h"
# include "frame.h"
# include "synth.h"
enum mad_decoder_mode {
MAD_DECODER_MODE_SYNC = 0,
MAD_DECODER_MODE_ASYNC
};
enum mad_flow {
MAD_FLOW_CONTINUE = 0x0000, /* continue normally */
MAD_FLOW_STOP = 0x0010, /* stop decoding normally */
MAD_FLOW_BREAK = 0x0011, /* stop decoding and signal an error */
MAD_FLOW_IGNORE = 0x0020 /* ignore the current frame */
};
struct sync_t {
struct mad_stream stream; // definito main_data_t un array di circa 4K
struct mad_frame frame;
struct mad_synth synth;
};
// # define MAD_BUFFER_GUARD 8
// # define MAD_BUFFER_MDLEN (511 + 2048 + MAD_BUFFER_GUARD)
// typedef unsigned char main_data_t[MAD_BUFFER_MDLEN]; 2567
// in frame.h
// struct mad_frame {
// struct mad_header header; /* MPEG audio header */
//
// int options; /* decoding options (from stream) */
//
// mad_fixed_t sbsample[2][36][32]; /* synthesis subband filter samples 9216 */
// mad_fixed_t (*overlap)[2][32][18]; /* Layer III block overlap data 4608 */
//};
//
// in synth.h
//struct mad_synth {
// mad_fixed_t filter[2][2][2][16][8]; /* polyphase filterbank outputs 4096 */
// /* [ch][eo][peo][s][v] */
//
// unsigned int phase; /* current processing phase */
// struct mad_pcm pcm; /* PCM output */
//};
struct mad_decoder {
enum mad_decoder_mode mode;
int options;
struct {
long pid;
int in;
int out;
} async;
/*
struct {
struct mad_stream stream;
struct mad_frame frame;
struct mad_synth synth;
} *sync;
*/
struct sync_t *sync;
void *cb_data;
enum mad_flow (*input_func)(void *, struct mad_stream *);
enum mad_flow (*header_func)(void *, struct mad_header const *);
enum mad_flow (*filter_func)(void *,
struct mad_stream const *, struct mad_frame *);
enum mad_flow (*output_func)(void *,
struct mad_header const *, struct mad_pcm *);
enum mad_flow (*error_func)(void *, struct mad_stream *, struct mad_frame *);
enum mad_flow (*message_func)(void *, void *, unsigned int *);
};
void mad_decoder_init(struct mad_decoder *, void *,
enum mad_flow (*)(void *, struct mad_stream *),
enum mad_flow (*)(void *, struct mad_header const *),
enum mad_flow (*)(void *,
struct mad_stream const *,
struct mad_frame *),
enum mad_flow (*)(void *,
struct mad_header const *,
struct mad_pcm *),
enum mad_flow (*)(void *,
struct mad_stream *,
struct mad_frame *),
enum mad_flow (*)(void *, void *, unsigned int *));
int mad_decoder_finish(struct mad_decoder *);
# define mad_decoder_options(decoder, opts) \
((void) ((decoder)->options = (opts)))
int mad_decoder_run(struct mad_decoder *, enum mad_decoder_mode);
int mad_decoder_message(struct mad_decoder *, void *, unsigned int *);
# endif