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winamp/Src/external_dependencies/openmpt-trunk/include/lame/libmp3lame/set_get.c

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/* -*- mode: C; mode: fold -*- */
/*
* set/get functions for lame_global_flags
*
* Copyright (c) 2001-2005 Alexander Leidinger
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/* $Id: set_get.c,v 1.104 2017/09/06 15:07:30 robert Exp $ */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include "lame.h"
#include "machine.h"
#include "encoder.h"
#include "util.h"
#include "bitstream.h" /* because of compute_flushbits */
#include "set_get.h"
#include "lame_global_flags.h"
/*
* input stream description
*/
/* number of samples */
/* it's unlikely for this function to return an error */
int
lame_set_num_samples(lame_global_flags * gfp, unsigned long num_samples)
{
if (is_lame_global_flags_valid(gfp)) {
/* default = 2^32-1 */
gfp->num_samples = num_samples;
return 0;
}
return -1;
}
unsigned long
lame_get_num_samples(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
return gfp->num_samples;
}
return 0;
}
/* input samplerate */
int
lame_set_in_samplerate(lame_global_flags * gfp, int in_samplerate)
{
if (is_lame_global_flags_valid(gfp)) {
if (in_samplerate < 1)
return -1;
/* input sample rate in Hz, default = 44100 Hz */
gfp->samplerate_in = in_samplerate;
return 0;
}
return -1;
}
int
lame_get_in_samplerate(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
return gfp->samplerate_in;
}
return 0;
}
/* number of channels in input stream */
int
lame_set_num_channels(lame_global_flags * gfp, int num_channels)
{
if (is_lame_global_flags_valid(gfp)) {
/* default = 2 */
if (2 < num_channels || 0 >= num_channels) {
return -1; /* we don't support more than 2 channels */
}
gfp->num_channels = num_channels;
return 0;
}
return -1;
}
int
lame_get_num_channels(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
return gfp->num_channels;
}
return 0;
}
/* scale the input by this amount before encoding (not used for decoding) */
int
lame_set_scale(lame_global_flags * gfp, float scale)
{
if (is_lame_global_flags_valid(gfp)) {
/* default = 1 */
gfp->scale = scale;
return 0;
}
return -1;
}
float
lame_get_scale(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
return gfp->scale;
}
return 0;
}
/* scale the channel 0 (left) input by this amount before
encoding (not used for decoding) */
int
lame_set_scale_left(lame_global_flags * gfp, float scale)
{
if (is_lame_global_flags_valid(gfp)) {
/* default = 1 */
gfp->scale_left = scale;
return 0;
}
return -1;
}
float
lame_get_scale_left(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
return gfp->scale_left;
}
return 0;
}
/* scale the channel 1 (right) input by this amount before
encoding (not used for decoding) */
int
lame_set_scale_right(lame_global_flags * gfp, float scale)
{
if (is_lame_global_flags_valid(gfp)) {
/* default = 1 */
gfp->scale_right = scale;
return 0;
}
return -1;
}
float
lame_get_scale_right(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
return gfp->scale_right;
}
return 0;
}
/* output sample rate in Hz */
int
lame_set_out_samplerate(lame_global_flags * gfp, int out_samplerate)
{
if (is_lame_global_flags_valid(gfp)) {
/*
* default = 0: LAME picks best value based on the amount
* of compression
* MPEG only allows:
* MPEG1 32, 44.1, 48khz
* MPEG2 16, 22.05, 24
* MPEG2.5 8, 11.025, 12
*
* (not used by decoding routines)
*/
if (out_samplerate != 0) {
int v=0;
if (SmpFrqIndex(out_samplerate, &v) < 0)
return -1;
}
gfp->samplerate_out = out_samplerate;
return 0;
}
return -1;
}
int
lame_get_out_samplerate(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
return gfp->samplerate_out;
}
return 0;
}
/*
* general control parameters
*/
/* collect data for an MP3 frame analzyer */
int
lame_set_analysis(lame_global_flags * gfp, int analysis)
{
if (is_lame_global_flags_valid(gfp)) {
/* default = 0 */
/* enforce disable/enable meaning, if we need more than two values
we need to switch to an enum to have an apropriate representation
of the possible meanings of the value */
if (0 > analysis || 1 < analysis)
return -1;
gfp->analysis = analysis;
return 0;
}
return -1;
}
int
lame_get_analysis(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
assert(0 <= gfp->analysis && 1 >= gfp->analysis);
return gfp->analysis;
}
return 0;
}
/* write a Xing VBR header frame */
int
lame_set_bWriteVbrTag(lame_global_flags * gfp, int bWriteVbrTag)
{
if (is_lame_global_flags_valid(gfp)) {
/* default = 1 (on) for VBR/ABR modes, 0 (off) for CBR mode */
/* enforce disable/enable meaning, if we need more than two values
we need to switch to an enum to have an apropriate representation
of the possible meanings of the value */
if (0 > bWriteVbrTag || 1 < bWriteVbrTag)
return -1;
gfp->write_lame_tag = bWriteVbrTag;
return 0;
}
return -1;
}
int
lame_get_bWriteVbrTag(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
assert(0 <= gfp->write_lame_tag && 1 >= gfp->write_lame_tag);
return gfp->write_lame_tag;
}
return 0;
}
/* decode only, use lame/mpglib to convert mp3 to wav */
int
lame_set_decode_only(lame_global_flags * gfp, int decode_only)
{
if (is_lame_global_flags_valid(gfp)) {
/* default = 0 (disabled) */
/* enforce disable/enable meaning, if we need more than two values
we need to switch to an enum to have an apropriate representation
of the possible meanings of the value */
if (0 > decode_only || 1 < decode_only)
return -1;
gfp->decode_only = decode_only;
return 0;
}
return -1;
}
int
lame_get_decode_only(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
assert(0 <= gfp->decode_only && 1 >= gfp->decode_only);
return gfp->decode_only;
}
return 0;
}
#if DEPRECATED_OR_OBSOLETE_CODE_REMOVED
/* 1=encode a Vorbis .ogg file. default=0 */
/* DEPRECATED */
int CDECL lame_set_ogg(lame_global_flags *, int);
int CDECL lame_get_ogg(const lame_global_flags *);
#else
#endif
/* encode a Vorbis .ogg file */
/* DEPRECATED */
int
lame_set_ogg(lame_global_flags * gfp, int ogg)
{
(void) gfp;
(void) ogg;
return -1;
}
int
lame_get_ogg(const lame_global_flags * gfp)
{
(void) gfp;
return 0;
}
/*
* Internal algorithm selection.
* True quality is determined by the bitrate but this variable will effect
* quality by selecting expensive or cheap algorithms.
* quality=0..9. 0=best (very slow). 9=worst.
* recommended: 3 near-best quality, not too slow
* 5 good quality, fast
* 7 ok quality, really fast
*/
int
lame_set_quality(lame_global_flags * gfp, int quality)
{
if (is_lame_global_flags_valid(gfp)) {
if (quality < 0) {
gfp->quality = 0;
}
else if (quality > 9) {
gfp->quality = 9;
}
else {
gfp->quality = quality;
}
return 0;
}
return -1;
}
int
lame_get_quality(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
return gfp->quality;
}
return 0;
}
/* mode = STEREO, JOINT_STEREO, DUAL_CHANNEL (not supported), MONO */
int
lame_set_mode(lame_global_flags * gfp, MPEG_mode mode)
{
if (is_lame_global_flags_valid(gfp)) {
int mpg_mode = mode;
/* default: lame chooses based on compression ratio and input channels */
if (mpg_mode < 0 || MAX_INDICATOR <= mpg_mode)
return -1; /* Unknown MPEG mode! */
gfp->mode = mode;
return 0;
}
return -1;
}
MPEG_mode
lame_get_mode(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
assert(gfp->mode < MAX_INDICATOR);
return gfp->mode;
}
return NOT_SET;
}
#if DEPRECATED_OR_OBSOLETE_CODE_REMOVED
/*
mode_automs. Use a M/S mode with a switching threshold based on
compression ratio
DEPRECATED
*/
int CDECL lame_set_mode_automs(lame_global_flags *, int);
int CDECL lame_get_mode_automs(const lame_global_flags *);
#else
#endif
/* Us a M/S mode with a switching threshold based on compression ratio */
/* DEPRECATED */
int
lame_set_mode_automs(lame_global_flags * gfp, int mode_automs)
{
if (is_lame_global_flags_valid(gfp)) {
/* default = 0 (disabled) */
/* enforce disable/enable meaning, if we need more than two values
we need to switch to an enum to have an apropriate representation
of the possible meanings of the value */
if (0 > mode_automs || 1 < mode_automs)
return -1;
lame_set_mode(gfp, JOINT_STEREO);
return 0;
}
return -1;
}
int
lame_get_mode_automs(const lame_global_flags * gfp)
{
(void) gfp;
return 1;
}
/*
* Force M/S for all frames. For testing only.
* Requires mode = 1.
*/
int
lame_set_force_ms(lame_global_flags * gfp, int force_ms)
{
if (is_lame_global_flags_valid(gfp)) {
/* default = 0 (disabled) */
/* enforce disable/enable meaning, if we need more than two values
we need to switch to an enum to have an apropriate representation
of the possible meanings of the value */
if (0 > force_ms || 1 < force_ms)
return -1;
gfp->force_ms = force_ms;
return 0;
}
return -1;
}
int
lame_get_force_ms(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
assert(0 <= gfp->force_ms && 1 >= gfp->force_ms);
return gfp->force_ms;
}
return 0;
}
/* Use free_format. */
int
lame_set_free_format(lame_global_flags * gfp, int free_format)
{
if (is_lame_global_flags_valid(gfp)) {
/* default = 0 (disabled) */
/* enforce disable/enable meaning, if we need more than two values
we need to switch to an enum to have an apropriate representation
of the possible meanings of the value */
if (0 > free_format || 1 < free_format)
return -1;
gfp->free_format = free_format;
return 0;
}
return -1;
}
int
lame_get_free_format(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
assert(0 <= gfp->free_format && 1 >= gfp->free_format);
return gfp->free_format;
}
return 0;
}
/* Perform ReplayGain analysis */
int
lame_set_findReplayGain(lame_global_flags * gfp, int findReplayGain)
{
if (is_lame_global_flags_valid(gfp)) {
/* default = 0 (disabled) */
/* enforce disable/enable meaning, if we need more than two values
we need to switch to an enum to have an apropriate representation
of the possible meanings of the value */
if (0 > findReplayGain || 1 < findReplayGain)
return -1;
gfp->findReplayGain = findReplayGain;
return 0;
}
return -1;
}
int
lame_get_findReplayGain(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
assert(0 <= gfp->findReplayGain && 1 >= gfp->findReplayGain);
return gfp->findReplayGain;
}
return 0;
}
/* Decode on the fly. Find the peak sample. If ReplayGain analysis is
enabled then perform it on the decoded data. */
int
lame_set_decode_on_the_fly(lame_global_flags * gfp, int decode_on_the_fly)
{
if (is_lame_global_flags_valid(gfp)) {
#ifndef DECODE_ON_THE_FLY
return -1;
#else
/* default = 0 (disabled) */
/* enforce disable/enable meaning, if we need more than two values
we need to switch to an enum to have an apropriate representation
of the possible meanings of the value */
if (0 > decode_on_the_fly || 1 < decode_on_the_fly)
return -1;
gfp->decode_on_the_fly = decode_on_the_fly;
return 0;
#endif
}
return -1;
}
int
lame_get_decode_on_the_fly(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
assert(0 <= gfp->decode_on_the_fly && 1 >= gfp->decode_on_the_fly);
return gfp->decode_on_the_fly;
}
return 0;
}
#if DEPRECATED_OR_OBSOLETE_CODE_REMOVED
/* DEPRECATED: now does the same as lame_set_findReplayGain()
default = 0 (disabled) */
int CDECL lame_set_ReplayGain_input(lame_global_flags *, int);
int CDECL lame_get_ReplayGain_input(const lame_global_flags *);
/* DEPRECATED: now does the same as
lame_set_decode_on_the_fly() && lame_set_findReplayGain()
default = 0 (disabled) */
int CDECL lame_set_ReplayGain_decode(lame_global_flags *, int);
int CDECL lame_get_ReplayGain_decode(const lame_global_flags *);
/* DEPRECATED: now does the same as lame_set_decode_on_the_fly()
default = 0 (disabled) */
int CDECL lame_set_findPeakSample(lame_global_flags *, int);
int CDECL lame_get_findPeakSample(const lame_global_flags *);
#else
#endif
/* DEPRECATED. same as lame_set_decode_on_the_fly() */
int
lame_set_findPeakSample(lame_global_flags * gfp, int arg)
{
return lame_set_decode_on_the_fly(gfp, arg);
}
int
lame_get_findPeakSample(const lame_global_flags * gfp)
{
return lame_get_decode_on_the_fly(gfp);
}
/* DEPRECATED. same as lame_set_findReplayGain() */
int
lame_set_ReplayGain_input(lame_global_flags * gfp, int arg)
{
return lame_set_findReplayGain(gfp, arg);
}
int
lame_get_ReplayGain_input(const lame_global_flags * gfp)
{
return lame_get_findReplayGain(gfp);
}
/* DEPRECATED. same as lame_set_decode_on_the_fly() &&
lame_set_findReplayGain() */
int
lame_set_ReplayGain_decode(lame_global_flags * gfp, int arg)
{
if (lame_set_decode_on_the_fly(gfp, arg) < 0 || lame_set_findReplayGain(gfp, arg) < 0)
return -1;
else
return 0;
}
int
lame_get_ReplayGain_decode(const lame_global_flags * gfp)
{
if (lame_get_decode_on_the_fly(gfp) > 0 && lame_get_findReplayGain(gfp) > 0)
return 1;
else
return 0;
}
/* set and get some gapless encoding flags */
int
lame_set_nogap_total(lame_global_flags * gfp, int the_nogap_total)
{
if (is_lame_global_flags_valid(gfp)) {
gfp->nogap_total = the_nogap_total;
return 0;
}
return -1;
}
int
lame_get_nogap_total(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
return gfp->nogap_total;
}
return 0;
}
int
lame_set_nogap_currentindex(lame_global_flags * gfp, int the_nogap_index)
{
if (is_lame_global_flags_valid(gfp)) {
gfp->nogap_current = the_nogap_index;
return 0;
}
return -1;
}
int
lame_get_nogap_currentindex(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
return gfp->nogap_current;
}
return 0;
}
/* message handlers */
int
lame_set_errorf(lame_global_flags * gfp, void (*func) (const char *, va_list))
{
if (is_lame_global_flags_valid(gfp)) {
gfp->report.errorf = func;
return 0;
}
return -1;
}
int
lame_set_debugf(lame_global_flags * gfp, void (*func) (const char *, va_list))
{
if (is_lame_global_flags_valid(gfp)) {
gfp->report.debugf = func;
return 0;
}
return -1;
}
int
lame_set_msgf(lame_global_flags * gfp, void (*func) (const char *, va_list))
{
if (is_lame_global_flags_valid(gfp)) {
gfp->report.msgf = func;
return 0;
}
return -1;
}
/*
* Set one of
* - brate
* - compression ratio.
*
* Default is compression ratio of 11.
*/
int
lame_set_brate(lame_global_flags * gfp, int brate)
{
if (is_lame_global_flags_valid(gfp)) {
gfp->brate = brate;
if (brate > 320) {
gfp->disable_reservoir = 1;
}
return 0;
}
return -1;
}
int
lame_get_brate(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
return gfp->brate;
}
return 0;
}
int
lame_set_compression_ratio(lame_global_flags * gfp, float compression_ratio)
{
if (is_lame_global_flags_valid(gfp)) {
gfp->compression_ratio = compression_ratio;
return 0;
}
return -1;
}
float
lame_get_compression_ratio(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
return gfp->compression_ratio;
}
return 0;
}
/*
* frame parameters
*/
/* Mark as copyright protected. */
int
lame_set_copyright(lame_global_flags * gfp, int copyright)
{
if (is_lame_global_flags_valid(gfp)) {
/* default = 0 (disabled) */
/* enforce disable/enable meaning, if we need more than two values
we need to switch to an enum to have an apropriate representation
of the possible meanings of the value */
if (0 > copyright || 1 < copyright)
return -1;
gfp->copyright = copyright;
return 0;
}
return -1;
}
int
lame_get_copyright(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
assert(0 <= gfp->copyright && 1 >= gfp->copyright);
return gfp->copyright;
}
return 0;
}
/* Mark as original. */
int
lame_set_original(lame_global_flags * gfp, int original)
{
if (is_lame_global_flags_valid(gfp)) {
/* default = 1 (enabled) */
/* enforce disable/enable meaning, if we need more than two values
we need to switch to an enum to have an apropriate representation
of the possible meanings of the value */
if (0 > original || 1 < original)
return -1;
gfp->original = original;
return 0;
}
return -1;
}
int
lame_get_original(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
assert(0 <= gfp->original && 1 >= gfp->original);
return gfp->original;
}
return 0;
}
/*
* error_protection.
* Use 2 bytes from each frame for CRC checksum.
*/
int
lame_set_error_protection(lame_global_flags * gfp, int error_protection)
{
if (is_lame_global_flags_valid(gfp)) {
/* default = 0 (disabled) */
/* enforce disable/enable meaning, if we need more than two values
we need to switch to an enum to have an apropriate representation
of the possible meanings of the value */
if (0 > error_protection || 1 < error_protection)
return -1;
gfp->error_protection = error_protection;
return 0;
}
return -1;
}
int
lame_get_error_protection(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
assert(0 <= gfp->error_protection && 1 >= gfp->error_protection);
return gfp->error_protection;
}
return 0;
}
#if DEPRECATED_OR_OBSOLETE_CODE_REMOVED
/* padding_type. 0=pad no frames 1=pad all frames 2=adjust padding(default) */
int CDECL lame_set_padding_type(lame_global_flags *, Padding_type);
Padding_type CDECL lame_get_padding_type(const lame_global_flags *);
#else
#endif
/*
* padding_type.
* PAD_NO = pad no frames
* PAD_ALL = pad all frames
* PAD_ADJUST = adjust padding
*/
int
lame_set_padding_type(lame_global_flags * gfp, Padding_type padding_type)
{
(void) gfp;
(void) padding_type;
return 0;
}
Padding_type
lame_get_padding_type(const lame_global_flags * gfp)
{
(void) gfp;
return PAD_ADJUST;
}
/* MP3 'private extension' bit. Meaningless. */
int
lame_set_extension(lame_global_flags * gfp, int extension)
{
if (is_lame_global_flags_valid(gfp)) {
/* default = 0 (disabled) */
/* enforce disable/enable meaning, if we need more than two values
we need to switch to an enum to have an apropriate representation
of the possible meanings of the value */
if (0 > extension || 1 < extension)
return -1;
gfp->extension = extension;
return 0;
}
return -1;
}
int
lame_get_extension(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
assert(0 <= gfp->extension && 1 >= gfp->extension);
return gfp->extension;
}
return 0;
}
/* Enforce strict ISO compliance. */
int
lame_set_strict_ISO(lame_global_flags * gfp, int val)
{
if (is_lame_global_flags_valid(gfp)) {
/* default = 0 (disabled) */
/* enforce disable/enable meaning, if we need more than two values
we need to switch to an enum to have an apropriate representation
of the possible meanings of the value */
if (val < MDB_DEFAULT || MDB_MAXIMUM < val)
return -1;
gfp->strict_ISO = val;
return 0;
}
return -1;
}
int
lame_get_strict_ISO(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
return gfp->strict_ISO;
}
return 0;
}
/********************************************************************
* quantization/noise shaping
***********************************************************************/
/* Disable the bit reservoir. For testing only. */
int
lame_set_disable_reservoir(lame_global_flags * gfp, int disable_reservoir)
{
if (is_lame_global_flags_valid(gfp)) {
/* default = 0 (disabled) */
/* enforce disable/enable meaning, if we need more than two values
we need to switch to an enum to have an apropriate representation
of the possible meanings of the value */
if (0 > disable_reservoir || 1 < disable_reservoir)
return -1;
gfp->disable_reservoir = disable_reservoir;
return 0;
}
return -1;
}
int
lame_get_disable_reservoir(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
assert(0 <= gfp->disable_reservoir && 1 >= gfp->disable_reservoir);
return gfp->disable_reservoir;
}
return 0;
}
int
lame_set_experimentalX(lame_global_flags * gfp, int experimentalX)
{
if (is_lame_global_flags_valid(gfp)) {
lame_set_quant_comp(gfp, experimentalX);
lame_set_quant_comp_short(gfp, experimentalX);
return 0;
}
return -1;
}
int
lame_get_experimentalX(const lame_global_flags * gfp)
{
return lame_get_quant_comp(gfp);
}
/* Select a different "best quantization" function. default = 0 */
int
lame_set_quant_comp(lame_global_flags * gfp, int quant_type)
{
if (is_lame_global_flags_valid(gfp)) {
gfp->quant_comp = quant_type;
return 0;
}
return -1;
}
int
lame_get_quant_comp(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
return gfp->quant_comp;
}
return 0;
}
/* Select a different "best quantization" function. default = 0 */
int
lame_set_quant_comp_short(lame_global_flags * gfp, int quant_type)
{
if (is_lame_global_flags_valid(gfp)) {
gfp->quant_comp_short = quant_type;
return 0;
}
return -1;
}
int
lame_get_quant_comp_short(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
return gfp->quant_comp_short;
}
return 0;
}
/* Another experimental option. For testing only. */
int
lame_set_experimentalY(lame_global_flags * gfp, int experimentalY)
{
if (is_lame_global_flags_valid(gfp)) {
gfp->experimentalY = experimentalY;
return 0;
}
return -1;
}
int
lame_get_experimentalY(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
return gfp->experimentalY;
}
return 0;
}
int
lame_set_experimentalZ(lame_global_flags * gfp, int experimentalZ)
{
if (is_lame_global_flags_valid(gfp)) {
gfp->experimentalZ = experimentalZ;
return 0;
}
return -1;
}
int
lame_get_experimentalZ(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
return gfp->experimentalZ;
}
return 0;
}
/* Naoki's psycho acoustic model. */
int
lame_set_exp_nspsytune(lame_global_flags * gfp, int exp_nspsytune)
{
if (is_lame_global_flags_valid(gfp)) {
/* default = 0 (disabled) */
gfp->exp_nspsytune = exp_nspsytune;
return 0;
}
return -1;
}
int
lame_get_exp_nspsytune(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
return gfp->exp_nspsytune;
}
return 0;
}
/********************************************************************
* VBR control
***********************************************************************/
/* Types of VBR. default = vbr_off = CBR */
int
lame_set_VBR(lame_global_flags * gfp, vbr_mode VBR)
{
if (is_lame_global_flags_valid(gfp)) {
int vbr_q = VBR;
if (0 > vbr_q || vbr_max_indicator <= vbr_q)
return -1; /* Unknown VBR mode! */
gfp->VBR = VBR;
return 0;
}
return -1;
}
vbr_mode
lame_get_VBR(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
assert(gfp->VBR < vbr_max_indicator);
return gfp->VBR;
}
return vbr_off;
}
/*
* VBR quality level.
* 0 = highest
* 9 = lowest
*/
int
lame_set_VBR_q(lame_global_flags * gfp, int VBR_q)
{
if (is_lame_global_flags_valid(gfp)) {
int ret = 0;
if (0 > VBR_q) {
ret = -1; /* Unknown VBR quality level! */
VBR_q = 0;
}
if (9 < VBR_q) {
ret = -1;
VBR_q = 9;
}
gfp->VBR_q = VBR_q;
gfp->VBR_q_frac = 0;
return ret;
}
return -1;
}
int
lame_get_VBR_q(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
assert(0 <= gfp->VBR_q && 10 > gfp->VBR_q);
return gfp->VBR_q;
}
return 0;
}
int
lame_set_VBR_quality(lame_global_flags * gfp, float VBR_q)
{
if (is_lame_global_flags_valid(gfp)) {
int ret = 0;
if (0 > VBR_q) {
ret = -1; /* Unknown VBR quality level! */
VBR_q = 0;
}
if (9.999 < VBR_q) {
ret = -1;
VBR_q = 9.999;
}
gfp->VBR_q = (int) VBR_q;
gfp->VBR_q_frac = VBR_q - gfp->VBR_q;
return ret;
}
return -1;
}
float
lame_get_VBR_quality(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
return gfp->VBR_q + gfp->VBR_q_frac;
}
return 0;
}
/* Ignored except for VBR = vbr_abr (ABR mode) */
int
lame_set_VBR_mean_bitrate_kbps(lame_global_flags * gfp, int VBR_mean_bitrate_kbps)
{
if (is_lame_global_flags_valid(gfp)) {
gfp->VBR_mean_bitrate_kbps = VBR_mean_bitrate_kbps;
return 0;
}
return -1;
}
int
lame_get_VBR_mean_bitrate_kbps(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
return gfp->VBR_mean_bitrate_kbps;
}
return 0;
}
int
lame_set_VBR_min_bitrate_kbps(lame_global_flags * gfp, int VBR_min_bitrate_kbps)
{
if (is_lame_global_flags_valid(gfp)) {
gfp->VBR_min_bitrate_kbps = VBR_min_bitrate_kbps;
return 0;
}
return -1;
}
int
lame_get_VBR_min_bitrate_kbps(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
return gfp->VBR_min_bitrate_kbps;
}
return 0;
}
int
lame_set_VBR_max_bitrate_kbps(lame_global_flags * gfp, int VBR_max_bitrate_kbps)
{
if (is_lame_global_flags_valid(gfp)) {
gfp->VBR_max_bitrate_kbps = VBR_max_bitrate_kbps;
return 0;
}
return -1;
}
int
lame_get_VBR_max_bitrate_kbps(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
return gfp->VBR_max_bitrate_kbps;
}
return 0;
}
/*
* Strictly enforce VBR_min_bitrate.
* Normally it will be violated for analog silence.
*/
int
lame_set_VBR_hard_min(lame_global_flags * gfp, int VBR_hard_min)
{
if (is_lame_global_flags_valid(gfp)) {
/* default = 0 (disabled) */
/* enforce disable/enable meaning, if we need more than two values
we need to switch to an enum to have an apropriate representation
of the possible meanings of the value */
if (0 > VBR_hard_min || 1 < VBR_hard_min)
return -1;
gfp->VBR_hard_min = VBR_hard_min;
return 0;
}
return -1;
}
int
lame_get_VBR_hard_min(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
assert(0 <= gfp->VBR_hard_min && 1 >= gfp->VBR_hard_min);
return gfp->VBR_hard_min;
}
return 0;
}
/********************************************************************
* Filtering control
***********************************************************************/
/*
* Freqency in Hz to apply lowpass.
* 0 = default = lame chooses
* -1 = disabled
*/
int
lame_set_lowpassfreq(lame_global_flags * gfp, int lowpassfreq)
{
if (is_lame_global_flags_valid(gfp)) {
gfp->lowpassfreq = lowpassfreq;
return 0;
}
return -1;
}
int
lame_get_lowpassfreq(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
return gfp->lowpassfreq;
}
return 0;
}
/*
* Width of transition band (in Hz).
* default = one polyphase filter band
*/
int
lame_set_lowpasswidth(lame_global_flags * gfp, int lowpasswidth)
{
if (is_lame_global_flags_valid(gfp)) {
gfp->lowpasswidth = lowpasswidth;
return 0;
}
return -1;
}
int
lame_get_lowpasswidth(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
return gfp->lowpasswidth;
}
return 0;
}
/*
* Frequency in Hz to apply highpass.
* 0 = default = lame chooses
* -1 = disabled
*/
int
lame_set_highpassfreq(lame_global_flags * gfp, int highpassfreq)
{
if (is_lame_global_flags_valid(gfp)) {
gfp->highpassfreq = highpassfreq;
return 0;
}
return -1;
}
int
lame_get_highpassfreq(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
return gfp->highpassfreq;
}
return 0;
}
/*
* Width of transition band (in Hz).
* default = one polyphase filter band
*/
int
lame_set_highpasswidth(lame_global_flags * gfp, int highpasswidth)
{
if (is_lame_global_flags_valid(gfp)) {
gfp->highpasswidth = highpasswidth;
return 0;
}
return -1;
}
int
lame_get_highpasswidth(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
return gfp->highpasswidth;
}
return 0;
}
/*
* psycho acoustics and other arguments which you should not change
* unless you know what you are doing
*/
/* Adjust masking values. */
int
lame_set_maskingadjust(lame_global_flags * gfp, float adjust)
{
if (is_lame_global_flags_valid(gfp)) {
gfp->maskingadjust = adjust;
return 0;
}
return -1;
}
float
lame_get_maskingadjust(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
return gfp->maskingadjust;
}
return 0;
}
int
lame_set_maskingadjust_short(lame_global_flags * gfp, float adjust)
{
if (is_lame_global_flags_valid(gfp)) {
gfp->maskingadjust_short = adjust;
return 0;
}
return -1;
}
float
lame_get_maskingadjust_short(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
return gfp->maskingadjust_short;
}
return 0;
}
/* Only use ATH for masking. */
int
lame_set_ATHonly(lame_global_flags * gfp, int ATHonly)
{
if (is_lame_global_flags_valid(gfp)) {
gfp->ATHonly = ATHonly;
return 0;
}
return -1;
}
int
lame_get_ATHonly(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
return gfp->ATHonly;
}
return 0;
}
/* Only use ATH for short blocks. */
int
lame_set_ATHshort(lame_global_flags * gfp, int ATHshort)
{
if (is_lame_global_flags_valid(gfp)) {
gfp->ATHshort = ATHshort;
return 0;
}
return -1;
}
int
lame_get_ATHshort(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
return gfp->ATHshort;
}
return 0;
}
/* Disable ATH. */
int
lame_set_noATH(lame_global_flags * gfp, int noATH)
{
if (is_lame_global_flags_valid(gfp)) {
gfp->noATH = noATH;
return 0;
}
return -1;
}
int
lame_get_noATH(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
return gfp->noATH;
}
return 0;
}
/* Select ATH formula. */
int
lame_set_ATHtype(lame_global_flags * gfp, int ATHtype)
{
if (is_lame_global_flags_valid(gfp)) {
/* XXX: ATHtype should be converted to an enum. */
gfp->ATHtype = ATHtype;
return 0;
}
return -1;
}
int
lame_get_ATHtype(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
return gfp->ATHtype;
}
return 0;
}
/* Select ATH formula 4 shape. */
int
lame_set_ATHcurve(lame_global_flags * gfp, float ATHcurve)
{
if (is_lame_global_flags_valid(gfp)) {
gfp->ATHcurve = ATHcurve;
return 0;
}
return -1;
}
float
lame_get_ATHcurve(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
return gfp->ATHcurve;
}
return 0;
}
/* Lower ATH by this many db. */
int
lame_set_ATHlower(lame_global_flags * gfp, float ATHlower)
{
if (is_lame_global_flags_valid(gfp)) {
gfp->ATH_lower_db = ATHlower;
return 0;
}
return -1;
}
float
lame_get_ATHlower(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
return gfp->ATH_lower_db;
}
return 0;
}
/* Select ATH adaptive adjustment scheme. */
int
lame_set_athaa_type(lame_global_flags * gfp, int athaa_type)
{
if (is_lame_global_flags_valid(gfp)) {
gfp->athaa_type = athaa_type;
return 0;
}
return -1;
}
int
lame_get_athaa_type(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
return gfp->athaa_type;
}
return 0;
}
#if DEPRECATED_OR_OBSOLETE_CODE_REMOVED
int CDECL lame_set_athaa_loudapprox(lame_global_flags * gfp, int athaa_loudapprox);
int CDECL lame_get_athaa_loudapprox(const lame_global_flags * gfp);
#else
#endif
/* Select the loudness approximation used by the ATH adaptive auto-leveling. */
int
lame_set_athaa_loudapprox(lame_global_flags * gfp, int athaa_loudapprox)
{
(void) gfp;
(void) athaa_loudapprox;
return 0;
}
int
lame_get_athaa_loudapprox(const lame_global_flags * gfp)
{
(void) gfp;
/* obsolete, the type known under number 2 is the only survival */
return 2;
}
/* Adjust (in dB) the point below which adaptive ATH level adjustment occurs. */
int
lame_set_athaa_sensitivity(lame_global_flags * gfp, float athaa_sensitivity)
{
if (is_lame_global_flags_valid(gfp)) {
gfp->athaa_sensitivity = athaa_sensitivity;
return 0;
}
return -1;
}
float
lame_get_athaa_sensitivity(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
return gfp->athaa_sensitivity;
}
return 0;
}
/* Predictability limit (ISO tonality formula) */
int lame_set_cwlimit(lame_global_flags * gfp, int cwlimit);
int lame_get_cwlimit(const lame_global_flags * gfp);
int
lame_set_cwlimit(lame_global_flags * gfp, int cwlimit)
{
(void) gfp;
(void) cwlimit;
return 0;
}
int
lame_get_cwlimit(const lame_global_flags * gfp)
{
(void) gfp;
return 0;
}
/*
* Allow blocktypes to differ between channels.
* default:
* 0 for jstereo => block types coupled
* 1 for stereo => block types may differ
*/
int
lame_set_allow_diff_short(lame_global_flags * gfp, int allow_diff_short)
{
if (is_lame_global_flags_valid(gfp)) {
gfp->short_blocks = allow_diff_short ? short_block_allowed : short_block_coupled;
return 0;
}
return -1;
}
int
lame_get_allow_diff_short(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
if (gfp->short_blocks == short_block_allowed)
return 1; /* short blocks allowed to differ */
else
return 0; /* not set, dispensed, forced or coupled */
}
return 0;
}
/* Use temporal masking effect */
int
lame_set_useTemporal(lame_global_flags * gfp, int useTemporal)
{
if (is_lame_global_flags_valid(gfp)) {
/* default = 1 (enabled) */
/* enforce disable/enable meaning, if we need more than two values
we need to switch to an enum to have an apropriate representation
of the possible meanings of the value */
if (0 <= useTemporal && useTemporal <= 1) {
gfp->useTemporal = useTemporal;
return 0;
}
}
return -1;
}
int
lame_get_useTemporal(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
assert(0 <= gfp->useTemporal && 1 >= gfp->useTemporal);
return gfp->useTemporal;
}
return 0;
}
/* Use inter-channel masking effect */
int
lame_set_interChRatio(lame_global_flags * gfp, float ratio)
{
if (is_lame_global_flags_valid(gfp)) {
/* default = 0.0 (no inter-channel maskin) */
if (0 <= ratio && ratio <= 1.0) {
gfp->interChRatio = ratio;
return 0;
}
}
return -1;
}
float
lame_get_interChRatio(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
assert((0 <= gfp->interChRatio && gfp->interChRatio <= 1.0) || EQ(gfp->interChRatio, -1));
return gfp->interChRatio;
}
return 0;
}
/* Use pseudo substep shaping method */
int
lame_set_substep(lame_global_flags * gfp, int method)
{
if (is_lame_global_flags_valid(gfp)) {
/* default = 0.0 (no substep noise shaping) */
if (0 <= method && method <= 7) {
gfp->substep_shaping = method;
return 0;
}
}
return -1;
}
int
lame_get_substep(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
assert(0 <= gfp->substep_shaping && gfp->substep_shaping <= 7);
return gfp->substep_shaping;
}
return 0;
}
/* scalefactors scale */
int
lame_set_sfscale(lame_global_flags * gfp, int val)
{
if (is_lame_global_flags_valid(gfp)) {
gfp->noise_shaping = (val != 0) ? 2 : 1;
return 0;
}
return -1;
}
int
lame_get_sfscale(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
return (gfp->noise_shaping == 2) ? 1 : 0;
}
return 0;
}
/* subblock gain */
int
lame_set_subblock_gain(lame_global_flags * gfp, int sbgain)
{
if (is_lame_global_flags_valid(gfp)) {
gfp->subblock_gain = sbgain;
return 0;
}
return -1;
}
int
lame_get_subblock_gain(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
return gfp->subblock_gain;
}
return 0;
}
/* Disable short blocks. */
int
lame_set_no_short_blocks(lame_global_flags * gfp, int no_short_blocks)
{
if (is_lame_global_flags_valid(gfp)) {
/* enforce disable/enable meaning, if we need more than two values
we need to switch to an enum to have an apropriate representation
of the possible meanings of the value */
if (0 <= no_short_blocks && no_short_blocks <= 1) {
gfp->short_blocks = no_short_blocks ? short_block_dispensed : short_block_allowed;
return 0;
}
}
return -1;
}
int
lame_get_no_short_blocks(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
switch (gfp->short_blocks) {
default:
case short_block_not_set:
return -1;
case short_block_dispensed:
return 1;
case short_block_allowed:
case short_block_coupled:
case short_block_forced:
return 0;
}
}
return -1;
}
/* Force short blocks. */
int
lame_set_force_short_blocks(lame_global_flags * gfp, int short_blocks)
{
if (is_lame_global_flags_valid(gfp)) {
/* enforce disable/enable meaning, if we need more than two values
we need to switch to an enum to have an apropriate representation
of the possible meanings of the value */
if (0 > short_blocks || 1 < short_blocks)
return -1;
if (short_blocks == 1)
gfp->short_blocks = short_block_forced;
else if (gfp->short_blocks == short_block_forced)
gfp->short_blocks = short_block_allowed;
return 0;
}
return -1;
}
int
lame_get_force_short_blocks(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
switch (gfp->short_blocks) {
default:
case short_block_not_set:
return -1;
case short_block_dispensed:
case short_block_allowed:
case short_block_coupled:
return 0;
case short_block_forced:
return 1;
}
}
return -1;
}
int
lame_set_short_threshold_lrm(lame_global_flags * gfp, float lrm)
{
if (is_lame_global_flags_valid(gfp)) {
gfp->attackthre = lrm;
return 0;
}
return -1;
}
float
lame_get_short_threshold_lrm(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
return gfp->attackthre;
}
return 0;
}
int
lame_set_short_threshold_s(lame_global_flags * gfp, float s)
{
if (is_lame_global_flags_valid(gfp)) {
gfp->attackthre_s = s;
return 0;
}
return -1;
}
float
lame_get_short_threshold_s(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
return gfp->attackthre_s;
}
return 0;
}
int
lame_set_short_threshold(lame_global_flags * gfp, float lrm, float s)
{
if (is_lame_global_flags_valid(gfp)) {
lame_set_short_threshold_lrm(gfp, lrm);
lame_set_short_threshold_s(gfp, s);
return 0;
}
return -1;
}
/*
* 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
* ignore these bits
*/
int
lame_set_emphasis(lame_global_flags * gfp, int emphasis)
{
if (is_lame_global_flags_valid(gfp)) {
/* XXX: emphasis should be converted to an enum */
if (0 <= emphasis && emphasis < 4) {
gfp->emphasis = emphasis;
return 0;
}
}
return -1;
}
int
lame_get_emphasis(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
assert(0 <= gfp->emphasis && gfp->emphasis < 4);
return gfp->emphasis;
}
return 0;
}
/***************************************************************/
/* internal variables, cannot be set... */
/* provided because they may be of use to calling application */
/***************************************************************/
/* MPEG version.
* 0 = MPEG-2
* 1 = MPEG-1
* (2 = MPEG-2.5)
*/
int
lame_get_version(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
lame_internal_flags const *const gfc = gfp->internal_flags;
if (is_lame_internal_flags_valid(gfc)) {
return gfc->cfg.version;
}
}
return 0;
}
/* Encoder delay. */
int
lame_get_encoder_delay(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
lame_internal_flags const *const gfc = gfp->internal_flags;
if (is_lame_internal_flags_valid(gfc)) {
return gfc->ov_enc.encoder_delay;
}
}
return 0;
}
/* padding added to the end of the input */
int
lame_get_encoder_padding(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
lame_internal_flags const *const gfc = gfp->internal_flags;
if (is_lame_internal_flags_valid(gfc)) {
return gfc->ov_enc.encoder_padding;
}
}
return 0;
}
/* Size of MPEG frame. */
int
lame_get_framesize(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
lame_internal_flags const *const gfc = gfp->internal_flags;
if (is_lame_internal_flags_valid(gfc)) {
SessionConfig_t const *const cfg = &gfc->cfg;
return 576 * cfg->mode_gr;
}
}
return 0;
}
/* Number of frames encoded so far. */
int
lame_get_frameNum(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
lame_internal_flags const *const gfc = gfp->internal_flags;
if (is_lame_internal_flags_valid(gfc)) {
return gfc->ov_enc.frame_number;
}
}
return 0;
}
int
lame_get_mf_samples_to_encode(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
lame_internal_flags const *const gfc = gfp->internal_flags;
if (is_lame_internal_flags_valid(gfc)) {
return gfc->sv_enc.mf_samples_to_encode;
}
}
return 0;
}
int CDECL
lame_get_size_mp3buffer(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
lame_internal_flags const *const gfc = gfp->internal_flags;
if (is_lame_internal_flags_valid(gfc)) {
int size;
compute_flushbits(gfc, &size);
return size;
}
}
return 0;
}
int
lame_get_RadioGain(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
lame_internal_flags const *const gfc = gfp->internal_flags;
if (is_lame_internal_flags_valid(gfc)) {
return gfc->ov_rpg.RadioGain;
}
}
return 0;
}
int
lame_get_AudiophileGain(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
lame_internal_flags const *const gfc = gfp->internal_flags;
if (is_lame_internal_flags_valid(gfc)) {
return 0;
}
}
return 0;
}
float
lame_get_PeakSample(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
lame_internal_flags const *const gfc = gfp->internal_flags;
if (is_lame_internal_flags_valid(gfc)) {
return (float) gfc->ov_rpg.PeakSample;
}
}
return 0;
}
int
lame_get_noclipGainChange(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
lame_internal_flags const *const gfc = gfp->internal_flags;
if (is_lame_internal_flags_valid(gfc)) {
return gfc->ov_rpg.noclipGainChange;
}
}
return 0;
}
float
lame_get_noclipScale(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
lame_internal_flags const *const gfc = gfp->internal_flags;
if (is_lame_internal_flags_valid(gfc)) {
return gfc->ov_rpg.noclipScale;
}
}
return 0;
}
/*
* LAME's estimate of the total number of frames to be encoded.
* Only valid if calling program set num_samples.
*/
int
lame_get_totalframes(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
lame_internal_flags const *const gfc = gfp->internal_flags;
if (is_lame_internal_flags_valid(gfc)) {
SessionConfig_t const *const cfg = &gfc->cfg;
unsigned long const pcm_samples_per_frame = 576 * cfg->mode_gr;
unsigned long pcm_samples_to_encode = gfp->num_samples;
unsigned long end_padding = 0;
int frames = 0;
if (pcm_samples_to_encode == (0ul-1ul))
return 0; /* unknown */
/* estimate based on user set num_samples: */
if (cfg->samplerate_in != cfg->samplerate_out) {
/* resampling, estimate new samples_to_encode */
double resampled_samples_to_encode = 0.0, frames_f = 0.0;
if (cfg->samplerate_in > 0) {
resampled_samples_to_encode = pcm_samples_to_encode;
resampled_samples_to_encode *= cfg->samplerate_out;
resampled_samples_to_encode /= cfg->samplerate_in;
}
if (resampled_samples_to_encode <= 0.0)
return 0; /* unlikely to happen, so what, no estimate! */
frames_f = floor(resampled_samples_to_encode / pcm_samples_per_frame);
if (frames_f >= (INT_MAX-2))
return 0; /* overflow, happens eventually, no estimate! */
frames = frames_f;
resampled_samples_to_encode -= frames * pcm_samples_per_frame;
pcm_samples_to_encode = ceil(resampled_samples_to_encode);
}
else {
frames = pcm_samples_to_encode / pcm_samples_per_frame;
pcm_samples_to_encode -= frames * pcm_samples_per_frame;
}
pcm_samples_to_encode += 576ul;
end_padding = pcm_samples_per_frame - (pcm_samples_to_encode % pcm_samples_per_frame);
if (end_padding < 576ul) {
end_padding += pcm_samples_per_frame;
}
pcm_samples_to_encode += end_padding;
frames += (pcm_samples_to_encode / pcm_samples_per_frame);
/* check to see if we underestimated totalframes */
/* if (totalframes < gfp->frameNum) */
/* totalframes = gfp->frameNum; */
return frames;
}
}
return 0;
}
int
lame_set_preset(lame_global_flags * gfp, int preset)
{
if (is_lame_global_flags_valid(gfp)) {
gfp->preset = preset;
return apply_preset(gfp, preset, 1);
}
return -1;
}
int
lame_set_asm_optimizations(lame_global_flags * gfp, int optim, int mode)
{
if (is_lame_global_flags_valid(gfp)) {
mode = (mode == 1 ? 1 : 0);
switch (optim) {
case MMX:{
gfp->asm_optimizations.mmx = mode;
return optim;
}
case AMD_3DNOW:{
gfp->asm_optimizations.amd3dnow = mode;
return optim;
}
case SSE:{
gfp->asm_optimizations.sse = mode;
return optim;
}
default:
return optim;
}
}
return -1;
}
void
lame_set_write_id3tag_automatic(lame_global_flags * gfp, int v)
{
if (is_lame_global_flags_valid(gfp)) {
gfp->write_id3tag_automatic = v;
}
}
int
lame_get_write_id3tag_automatic(lame_global_flags const *gfp)
{
if (is_lame_global_flags_valid(gfp)) {
return gfp->write_id3tag_automatic;
}
return 1;
}
/*
UNDOCUMENTED, experimental settings. These routines are not prototyped
in lame.h. You should not use them, they are experimental and may
change.
*/
/*
* just another daily changing developer switch
*/
void CDECL lame_set_tune(lame_global_flags *, float);
void
lame_set_tune(lame_global_flags * gfp, float val)
{
if (is_lame_global_flags_valid(gfp)) {
gfp->tune_value_a = val;
gfp->tune = 1;
}
}
/* Custom msfix hack */
void
lame_set_msfix(lame_global_flags * gfp, double msfix)
{
if (is_lame_global_flags_valid(gfp)) {
/* default = 0 */
gfp->msfix = msfix;
}
}
float
lame_get_msfix(const lame_global_flags * gfp)
{
if (is_lame_global_flags_valid(gfp)) {
return gfp->msfix;
}
return 0;
}
#if DEPRECATED_OR_OBSOLETE_CODE_REMOVED
int CDECL lame_set_preset_expopts(lame_global_flags *, int);
#else
#endif
int
lame_set_preset_expopts(lame_global_flags * gfp, int preset_expopts)
{
(void) gfp;
(void) preset_expopts;
return 0;
}
int
lame_set_preset_notune(lame_global_flags * gfp, int preset_notune)
{
(void) gfp;
(void) preset_notune;
return 0;
}
static int
calc_maximum_input_samples_for_buffer_size(lame_internal_flags const* gfc, size_t buffer_size)
{
SessionConfig_t const *const cfg = &gfc->cfg;
int const pcm_samples_per_frame = 576 * cfg->mode_gr;
int frames_per_buffer = 0, input_samples_per_buffer = 0;
int kbps = 320;
if (cfg->samplerate_out < 16000)
kbps = 64;
else if (cfg->samplerate_out < 32000)
kbps = 160;
else
kbps = 320;
if (cfg->free_format)
kbps = cfg->avg_bitrate;
else if (cfg->vbr == vbr_off) {
kbps = cfg->avg_bitrate;
}
{
int const pad = 1;
int const bpf = ((cfg->version + 1) * 72000 * kbps / cfg->samplerate_out + pad);
frames_per_buffer = buffer_size / bpf;
}
{
double ratio = (double) cfg->samplerate_in / cfg->samplerate_out;
input_samples_per_buffer = pcm_samples_per_frame * frames_per_buffer * ratio;
}
return input_samples_per_buffer;
}
int
lame_get_maximum_number_of_samples(lame_t gfp, size_t buffer_size)
{
if (is_lame_global_flags_valid(gfp)) {
lame_internal_flags const *const gfc = gfp->internal_flags;
if (is_lame_internal_flags_valid(gfc)) {
return calc_maximum_input_samples_for_buffer_size(gfc, buffer_size);
}
}
return LAME_GENERICERROR;
}
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