75 lines
2.7 KiB
C
75 lines
2.7 KiB
C
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/*
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** Copyright (C) 2019 Erik de Castro Lopo <erikd@mega-nerd.com>
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** Copyright (C) 2019 Arthur Taylor <art@ified.ca>
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**
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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 Lesser General Public License as published by
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** the Free Software Foundation ; either version 2.1 of the License, or
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** (at your option) any later version.
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**
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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 Lesser General Public License for more details.
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**
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** You should have received a copy of the GNU Lesser General Public License
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** along with this program ; if not, write to the Free Software
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** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifndef SNDFILE_MPEG_H
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#define SNDFILE_MPEG_H
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#include "common.h"
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int mpeg_decoder_init (SF_PRIVATE *psf) ;
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/*
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** Get the file bitrate mode, returning one of the SF_BITRATE_MODE_ enum
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** values. Purely informative, 'Frankenstein' files and VBR files without an
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** Xing/LAME/Info header may not be detected properly.
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*/
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int mpeg_decoder_get_bitrate_mode (SF_PRIVATE *psf) ;
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/*
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** Initialize an encoder instance for writing. If parameter info_tag is
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** SF_TRUE, a Xing/LAME/Info header is written at the beginning of the file,
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** (unless the file cannot seek.)
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*/
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int mpeg_l3_encoder_init (SF_PRIVATE *psf, int info_tag) ;
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/*
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** Write an ID3v2 header from the sndfile string metadata. Must be called
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** before any audio data is written. Writing an ID3v2 header will also cause
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** a ID3v1 trailer to be written on close automatically.
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*/
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int mpeg_l3_encoder_write_id3tag (SF_PRIVATE *psf) ;
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/*
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** Set the encoder quality setting. Argument to compression should be identical
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** to that for SFC_SET_COMPRESSION_LEVEL; It should be in the range [0-1],
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** with 0 being highest quality, least compression, and 1 being the opposite.
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** Returns SF_TRUE on success, SF_FALSE otherwise.
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*/
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int mpeg_l3_encoder_set_quality (SF_PRIVATE *psf, double compression) ;
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/*
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** Set the encoder bitrate mode. Can only be called before any data has been
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** written. Argument mode should be one of the SF_BITRATE_MODE_ enum values.
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** Returns SF_TRUE on success, SF_FALSE otherwise. The SF_BITRATE_MODE_FILE
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** enum value should not be passed here but rather intercepted at the container
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** level and translated according to the container.
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*/
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int mpeg_l3_encoder_set_bitrate_mode (SF_PRIVATE *psf, int mode) ;
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/*
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** Get the encoder bitrate mode in use. Returns a SF_BITRATE_MODE_ enum value.
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** Will not return SF_BITRATE_MODE_FILE.
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*/
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int mpeg_l3_encoder_get_bitrate_mode (SF_PRIVATE *psf) ;
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#endif /* SNDFILE_MPEG_H */
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