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91 lines
3.0 KiB
91 lines
3.0 KiB
7 years ago
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/*
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frame.h - compact version of famous library mpg123
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Copyright (C) 2017 Uncle Mike
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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*/
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#ifndef FRAME_H
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#define FRAME_H
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#define MAXFRAMESIZE 3456 // max = 1728
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#define NUM_CHANNELS 2
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typedef struct
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{
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short bits;
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short d;
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} al_table_t;
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// the output buffer, used to be pcm_sample, pcm_point and audiobufsize
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typedef struct outbuffer_s
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{
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byte *data; // main data pointer, aligned
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byte *p; // read pointer
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size_t fill; // fill from read pointer
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size_t size;
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byte *rdata; // unaligned base pointer
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} outbuffer_t;
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typedef struct audioformat_s
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{
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int encoding; // final encoding, after post-processing.
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int encsize; // size of one sample in bytes, plain int should be fine here...
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int dec_enc; // encoding of decoder synth.
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int dec_encsize; // size of one decoder sample.
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int channels;
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int rate;
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} audioformat_t;
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typedef struct mpg123_parm_s
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{
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int verbose; // verbose level
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long flags; // combination of above
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int down_sample;
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int rva; // (which) rva to do: 0: nothing, 1: radio/mix/track 2: album/audiophile
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long halfspeed;
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long doublespeed;
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long timeout;
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char audio_caps[NUM_CHANNELS][MPG123_RATES+1][MPG123_ENCODINGS];
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double outscale;
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long resync_limit;
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long index_size; // Long, because: negative values have a meaning.
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long preframes;
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long feedpool;
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long feedbuffer;
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} mpg123_parm_t;
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// generic init, does not include dynamic buffers
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void frame_init( mpg123_handle_t *fr );
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void frame_init_par( mpg123_handle_t *fr, mpg123_parm_t *mp );
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int frame_outbuffer( mpg123_handle_t *fr );
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int frame_output_format( mpg123_handle_t *fr );
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int frame_buffers( mpg123_handle_t *fr );
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int frame_reset( mpg123_handle_t *fr );
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int frame_buffers_reset( mpg123_handle_t *fr );
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void frame_exit( mpg123_handle_t *fr );
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int frame_index_setup( mpg123_handle_t *fr );
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mpg_off_t frame_expect_outsamples( mpg123_handle_t *fr );
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mpg_off_t frame_offset( mpg123_handle_t *fr, mpg_off_t outs );
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void frame_gapless_init( mpg123_handle_t *fr, mpg_off_t framecount, mpg_off_t bskip, mpg_off_t eskip );
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void frame_gapless_realinit( mpg123_handle_t *fr );
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void frame_gapless_update( mpg123_handle_t *fr, mpg_off_t total_samples );
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mpg_off_t frame_index_find( mpg123_handle_t *fr, mpg_off_t want_frame, mpg_off_t* get_frame );
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mpg_off_t frame_outs( mpg123_handle_t *fr, mpg_off_t num );
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void frame_set_seek( mpg123_handle_t *fr, mpg_off_t sp );
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void frame_set_frameseek( mpg123_handle_t *fr, mpg_off_t fe );
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int frame_fill_toc( mpg123_handle_t *fr, byte *in );
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void frame_skip( mpg123_handle_t *fr );
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void do_rva( mpg123_handle_t *fr );
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#endif//FRAME_H
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