/* ** Copyright (C) 2019 Erik de Castro Lopo ** Copyright (C) 2019 Arthur Taylor ** ** This program 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 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 Lesser General Public License for more details. ** ** You should have received a copy of the GNU Lesser 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. */ #ifndef SNDFILE_MPEG_H #define SNDFILE_MPEG_H #include "common.h" int mpeg_decoder_init (SF_PRIVATE *psf) ; /* ** Get the file bitrate mode, returning one of the SF_BITRATE_MODE_ enum ** values. Purely informative, 'Frankenstein' files and VBR files without an ** Xing/LAME/Info header may not be detected properly. */ int mpeg_decoder_get_bitrate_mode (SF_PRIVATE *psf) ; /* ** Initialize an encoder instance for writing. If parameter info_tag is ** SF_TRUE, a Xing/LAME/Info header is written at the beginning of the file, ** (unless the file cannot seek.) */ int mpeg_l3_encoder_init (SF_PRIVATE *psf, int info_tag) ; /* ** Write an ID3v2 header from the sndfile string metadata. Must be called ** before any audio data is written. Writing an ID3v2 header will also cause ** a ID3v1 trailer to be written on close automatically. */ int mpeg_l3_encoder_write_id3tag (SF_PRIVATE *psf) ; /* ** Set the encoder quality setting. Argument to compression should be identical ** to that for SFC_SET_COMPRESSION_LEVEL; It should be in the range [0-1], ** with 0 being highest quality, least compression, and 1 being the opposite. ** Returns SF_TRUE on success, SF_FALSE otherwise. */ int mpeg_l3_encoder_set_quality (SF_PRIVATE *psf, double compression) ; /* ** Set the encoder bitrate mode. Can only be called before any data has been ** written. Argument mode should be one of the SF_BITRATE_MODE_ enum values. ** Returns SF_TRUE on success, SF_FALSE otherwise. The SF_BITRATE_MODE_FILE ** enum value should not be passed here but rather intercepted at the container ** level and translated according to the container. */ int mpeg_l3_encoder_set_bitrate_mode (SF_PRIVATE *psf, int mode) ; /* ** Get the encoder bitrate mode in use. Returns a SF_BITRATE_MODE_ enum value. ** Will not return SF_BITRATE_MODE_FILE. */ int mpeg_l3_encoder_get_bitrate_mode (SF_PRIVATE *psf) ; #endif /* SNDFILE_MPEG_H */