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- #ifndef LAME_GLOBAL_FLAGS_H
- #define LAME_GLOBAL_FLAGS_H
- #ifndef lame_internal_flags_defined
- #define lame_internal_flags_defined
- struct lame_internal_flags;
- typedef struct lame_internal_flags lame_internal_flags;
- #endif
- typedef enum short_block_e {
- short_block_not_set = -1, /* allow LAME to decide */
- short_block_allowed = 0, /* LAME may use them, even different block types for L/R */
- short_block_coupled, /* LAME may use them, but always same block types in L/R */
- short_block_dispensed, /* LAME will not use short blocks, long blocks only */
- short_block_forced /* LAME will not use long blocks, short blocks only */
- } short_block_t;
- /***********************************************************************
- *
- * Control Parameters set by User. These parameters are here for
- * backwards compatibility with the old, non-shared lib API.
- * Please use the lame_set_variablename() functions below
- *
- *
- ***********************************************************************/
- struct lame_global_struct {
- unsigned int class_id;
- /* input description */
- unsigned long num_samples; /* number of samples. default=2^32-1 */
- int num_channels; /* input number of channels. default=2 */
- int samplerate_in; /* input_samp_rate in Hz. default=44.1 kHz */
- int samplerate_out; /* output_samp_rate.
- default: LAME picks best value
- at least not used for MP3 decoding:
- Remember 44.1 kHz MP3s and AC97 */
- float scale; /* scale input by this amount before encoding
- at least not used for MP3 decoding */
- float scale_left; /* scale input of channel 0 (left) by this
- amount before encoding */
- float scale_right; /* scale input of channel 1 (right) by this
- amount before encoding */
- /* general control params */
- int analysis; /* collect data for a MP3 frame analyzer? */
- int write_lame_tag; /* add Xing VBR tag? */
- int decode_only; /* use lame/mpglib to convert mp3 to wav */
- int quality; /* quality setting 0=best, 9=worst default=5 */
- MPEG_mode mode; /* see enum in lame.h
- default = LAME picks best value */
- int force_ms; /* force M/S mode. requires mode=1 */
- int free_format; /* use free format? default=0 */
- int findReplayGain; /* find the RG value? default=0 */
- int decode_on_the_fly; /* decode on the fly? default=0 */
- int write_id3tag_automatic; /* 1 (default) writes ID3 tags, 0 not */
- int nogap_total;
- int nogap_current;
- int substep_shaping;
- int noise_shaping;
- int subblock_gain; /* 0 = no, 1 = yes */
- int use_best_huffman; /* 0 = no. 1=outside loop 2=inside loop(slow) */
- /*
- * set either brate>0 or compression_ratio>0, LAME will compute
- * the value of the variable not set.
- * Default is compression_ratio = 11.025
- */
- int brate; /* bitrate */
- float compression_ratio; /* sizeof(wav file)/sizeof(mp3 file) */
- /* frame params */
- int copyright; /* mark as copyright. default=0 */
- int original; /* mark as original. default=1 */
- int extension; /* the MP3 'private extension' bit.
- Meaningless */
- int emphasis; /* Input PCM is emphased PCM (for
- instance from one of the rarely
- emphased CDs), it is STRONGLY not
- recommended to use this, because
- psycho does not take it into account,
- and last but not least many decoders
- don't care about these bits */
- int error_protection; /* use 2 bytes per frame for a CRC
- checksum. default=0 */
- int strict_ISO; /* enforce ISO spec as much as possible */
- int disable_reservoir; /* use bit reservoir? */
- /* quantization/noise shaping */
- int quant_comp;
- int quant_comp_short;
- int experimentalY;
- int experimentalZ;
- int exp_nspsytune;
- int preset;
- /* VBR control */
- vbr_mode VBR;
- float VBR_q_frac; /* Range [0,...,1[ */
- int VBR_q; /* Range [0,...,9] */
- int VBR_mean_bitrate_kbps;
- int VBR_min_bitrate_kbps;
- int VBR_max_bitrate_kbps;
- int VBR_hard_min; /* strictly enforce VBR_min_bitrate
- normaly, it will be violated for analog
- silence */
- /* resampling and filtering */
- int lowpassfreq; /* freq in Hz. 0=lame choses.
- -1=no filter */
- int highpassfreq; /* freq in Hz. 0=lame choses.
- -1=no filter */
- int lowpasswidth; /* freq width of filter, in Hz
- (default=15%) */
- int highpasswidth; /* freq width of filter, in Hz
- (default=15%) */
- /*
- * psycho acoustics and other arguments which you should not change
- * unless you know what you are doing
- */
- float maskingadjust;
- float maskingadjust_short;
- int ATHonly; /* only use ATH */
- int ATHshort; /* only use ATH for short blocks */
- int noATH; /* disable ATH */
- int ATHtype; /* select ATH formula */
- float ATHcurve; /* change ATH formula 4 shape */
- float ATH_lower_db; /* lower ATH by this many db */
- int athaa_type; /* select ATH auto-adjust scheme */
- float athaa_sensitivity; /* dB, tune active region of auto-level */
- short_block_t short_blocks;
- int useTemporal; /* use temporal masking effect */
- float interChRatio;
- float msfix; /* Naoki's adjustment of Mid/Side maskings */
- int tune; /* 0 off, 1 on */
- float tune_value_a; /* used to pass values for debugging and stuff */
- float attackthre; /* attack threshold for L/R/M channel */
- float attackthre_s; /* attack threshold for S channel */
- struct {
- void (*msgf) (const char *format, va_list ap);
- void (*debugf) (const char *format, va_list ap);
- void (*errorf) (const char *format, va_list ap);
- } report;
- /************************************************************************/
- /* internal variables, do not set... */
- /* provided because they may be of use to calling application */
- /************************************************************************/
- int lame_allocated_gfp; /* is this struct owned by calling
- program or lame? */
- /**************************************************************************/
- /* more internal variables are stored in this structure: */
- /**************************************************************************/
- lame_internal_flags *internal_flags;
- struct {
- int mmx;
- int amd3dnow;
- int sse;
- } asm_optimizations;
- };
- int is_lame_global_flags_valid(const lame_global_flags * gfp);
- #endif /* LAME_GLOBAL_FLAGS_H */
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