+++ /dev/null
-/*
- format:routines to deal with audio (output) format
-
- copyright 2008-14 by the mpg123 project - free software under the terms of the LGPL 2.1
- see COPYING and AUTHORS files in distribution or http://mpg123.org
- initially written by Thomas Orgis, starting with parts of the old audio.c, with only faintly manage to show now
-
- A Major change from mpg123 <= 1.18 is that all encodings are only really
- disabled when done so via specific build configuration. Otherwise, the
- missing support of decoders to produce a certain format is augmented by
- postprocessing that converts the samples. This means happily creating
- data with higher resolution from less accurate decoder output.
-
- The main point is to still offer float encoding when the decoding core uses
- a fixed point representation that has only 16 bit output. Actually, that's
- the only point: A fixed-point build needs to create float from 16 bit, also
- 32 or 24 bit from the same source. That's all there is to it: Everything else
- is covered by fallback synth functions. It may be a further step to check if
- there are cases where conversion in postprocessing works well enough to omit
- a certain specialized decoder ... but usually, they are justified by some
- special way to get from float to integer to begin with.
-
- I won't cover the case of faking double output with float/s16 decoders here.
- Double precision output is a thing for experimental builds anyway. Mostly
- theoretical and without a point.
-*/
-
-#include "mpg123lib_intern.h"
-#include "debug.h"
-
-/* static int chans[NUM_CHANNELS] = { 1 , 2 }; */
-static const long my_rates[MPG123_RATES] = /* only the standard rates */
-{
- 8000, 11025, 12000,
- 16000, 22050, 24000,
- 32000, 44100, 48000,
-};
-
-static const int my_encodings[MPG123_ENCODINGS] =
-{
- MPG123_ENC_SIGNED_16,
- MPG123_ENC_UNSIGNED_16,
- MPG123_ENC_SIGNED_32,
- MPG123_ENC_UNSIGNED_32,
- MPG123_ENC_SIGNED_24,
- MPG123_ENC_UNSIGNED_24,
- /* Floating point range, see below. */
- MPG123_ENC_FLOAT_32,
- MPG123_ENC_FLOAT_64,
- /* 8 bit range, see below. */
- MPG123_ENC_SIGNED_8,
- MPG123_ENC_UNSIGNED_8,
- MPG123_ENC_ULAW_8,
- MPG123_ENC_ALAW_8
-};
-
-/* Make that match the above table.
- And yes, I still don't like this kludgy stuff. */
-/* range[0] <= i < range[1] for forced floating point */
-static const int enc_float_range[2] = { 6, 8 };
-/* same for 8 bit encodings */
-static const int enc_8bit_range[2] = { 8, 12 };
-
-/*
- Only one type of float is supported.
- Actually, double is a very special experimental case not occuring in normal
- builds. Might actually get rid of it.
-
- Remember here: Also with REAL_IS_FIXED, I want to be able to produce float
- output (f32) via post-processing.
-*/
-# ifdef REAL_IS_DOUBLE
-# define MPG123_FLOAT_ENC MPG123_ENC_FLOAT_64
-# else
-# define MPG123_FLOAT_ENC MPG123_ENC_FLOAT_32
-# endif
-
-/* The list of actually possible encodings. */
-static const int good_encodings[] =
-{
-#ifndef NO_16BIT
- MPG123_ENC_SIGNED_16,
- MPG123_ENC_UNSIGNED_16,
-#endif
-#ifndef NO_32BIT
- MPG123_ENC_SIGNED_32,
- MPG123_ENC_UNSIGNED_32,
- MPG123_ENC_SIGNED_24,
- MPG123_ENC_UNSIGNED_24,
-#endif
-#ifndef NO_REAL
- MPG123_FLOAT_ENC,
-#endif
-#ifndef NO_8BIT
- MPG123_ENC_SIGNED_8,
- MPG123_ENC_UNSIGNED_8,
- MPG123_ENC_ULAW_8,
- MPG123_ENC_ALAW_8
-#endif
-};
-
-/* Check if encoding is a valid one in this build.
- ...lazy programming: linear search. */
-static int good_enc(const int enc)
-{
- size_t i;
- for(i=0; i<sizeof(good_encodings)/sizeof(int); ++i)
- if(enc == good_encodings[i]) return TRUE;
-
- return FALSE;
-}
-
-void attribute_align_arg mpg123_rates(const long **list, size_t *number)
-{
- if(list != NULL) *list = my_rates;
- if(number != NULL) *number = sizeof(my_rates)/sizeof(long);
-}
-
-/* Now that's a bit tricky... One build of the library knows only a subset of the encodings. */
-void attribute_align_arg mpg123_encodings(const int **list, size_t *number)
-{
- if(list != NULL) *list = good_encodings;
- if(number != NULL) *number = sizeof(good_encodings)/sizeof(int);
-}
-
-int attribute_align_arg mpg123_encsize(int encoding)
-{
- if(encoding & MPG123_ENC_8)
- return 1;
- else if(encoding & MPG123_ENC_16)
- return 2;
- else if(encoding & MPG123_ENC_24)
- return 3;
- else if(encoding & MPG123_ENC_32 || encoding == MPG123_ENC_FLOAT_32)
- return 4;
- else if(encoding == MPG123_ENC_FLOAT_64)
- return 8;
- else
- return 0;
-}
-
-/* char audio_caps[NUM_CHANNELS][MPG123_RATES+1][MPG123_ENCODINGS]; */
-
-static int rate2num(mpg123_pars *mp, long r)
-{
- int i;
- for(i=0;i<MPG123_RATES;i++) if(my_rates[i] == r) return i;
-#ifndef NO_NTOM
- if(mp && mp->force_rate != 0 && mp->force_rate == r) return MPG123_RATES;
-#endif
-
- return -1;
-}
-
-static int enc2num(int encoding)
-{
- int i;
- for(i=0;i<MPG123_ENCODINGS;++i)
- if(my_encodings[i] == encoding) return i;
-
- return -1;
-}
-
-static int cap_fit(mpg123_handle *fr, struct audioformat *nf, int f0, int f2)
-{
- int i;
- int c = nf->channels-1;
- int rn = rate2num(&fr->p, nf->rate);
- if(rn >= 0) for(i=f0;i<f2;i++)
- {
- if(fr->p.audio_caps[c][rn][i])
- {
- nf->encoding = my_encodings[i];
- return 1;
- }
- }
- return 0;
-}
-
-static int freq_fit(mpg123_handle *fr, struct audioformat *nf, int f0, int f2)
-{
- nf->rate = frame_freq(fr)>>fr->p.down_sample;
- if(cap_fit(fr,nf,f0,f2)) return 1;
- if(fr->p.flags & MPG123_AUTO_RESAMPLE)
- {
- nf->rate>>=1;
- if(cap_fit(fr,nf,f0,f2)) return 1;
- nf->rate>>=1;
- if(cap_fit(fr,nf,f0,f2)) return 1;
- }
-#ifndef NO_NTOM
- /* If nothing worked, try the other rates, only without constrains from user.
- In case you didn't guess: We enable flexible resampling if we find a working rate. */
- if( fr->p.flags & MPG123_AUTO_RESAMPLE &&
- !fr->p.force_rate && fr->p.down_sample == 0)
- {
- int i;
- int c = nf->channels-1;
- int rn = rate2num(&fr->p, frame_freq(fr));
- int rrn;
- if(rn < 0) return 0;
- /* Try higher rates first. */
- for(i=f0;i<f2;i++) for(rrn=rn+1; rrn<MPG123_RATES; ++rrn)
- if(fr->p.audio_caps[c][rrn][i])
- {
- nf->rate = my_rates[rrn];
- nf->encoding = my_encodings[i];
- return 1;
- }
- /* Then lower rates. */
- for(i=f0;i<f2;i++) for(rrn=rn-1; rrn>=0; --rrn)
- if(fr->p.audio_caps[c][rrn][i])
- {
- nf->rate = my_rates[rrn];
- nf->encoding = my_encodings[i];
- return 1;
- }
- }
-#endif
-
- return 0;
-}
-
-/* match constraints against supported audio formats, store possible setup in frame
- return: -1: error; 0: no format change; 1: format change */
-int frame_output_format(mpg123_handle *fr)
-{
- struct audioformat nf;
- int f0=0;
- int f2=MPG123_ENCODINGS; /* Omit the 32bit and float encodings. */
- mpg123_pars *p = &fr->p;
- /* initialize new format, encoding comes later */
- nf.channels = fr->stereo;
-
- /* All this forcing should be removed in favour of the capabilities table... */
- if(p->flags & MPG123_FORCE_8BIT)
- {
- f0 = enc_8bit_range[0];
- f2 = enc_8bit_range[1];
- }
- if(p->flags & MPG123_FORCE_FLOAT)
- {
- f0 = enc_float_range[0];
- f2 = enc_float_range[1];
- }
-
- /* force stereo is stronger */
- if(p->flags & MPG123_FORCE_MONO) nf.channels = 1;
- if(p->flags & MPG123_FORCE_STEREO) nf.channels = 2;
-
-#ifndef NO_NTOM
- if(p->force_rate)
- {
- nf.rate = p->force_rate;
- if(cap_fit(fr,&nf,f0,2)) goto end; /* 16bit encodings */
- if(cap_fit(fr,&nf,f0<=2 ? 2 : f0,f2)) goto end; /* 8bit encodings */
-
- /* try again with different stereoness */
- if(nf.channels == 2 && !(p->flags & MPG123_FORCE_STEREO)) nf.channels = 1;
- else if(nf.channels == 1 && !(p->flags & MPG123_FORCE_MONO)) nf.channels = 2;
-
- if(cap_fit(fr,&nf,f0,2)) goto end; /* 16bit encodings */
- if(cap_fit(fr,&nf,f0<=2 ? 2 : f0,f2)) goto end; /* 8bit encodings */
-
- if(NOQUIET)
- error3( "Unable to set up output format! Constraints: %s%s%liHz.",
- ( p->flags & MPG123_FORCE_STEREO ? "stereo, " :
- (p->flags & MPG123_FORCE_MONO ? "mono, " : "") ),
- (p->flags & MPG123_FORCE_8BIT ? "8bit, " : ""),
- p->force_rate );
-/* if(NOQUIET && p->verbose <= 1) print_capabilities(fr); */
-
- fr->err = MPG123_BAD_OUTFORMAT;
- return -1;
- }
-#endif
-
- if(freq_fit(fr, &nf, f0, 2)) goto end; /* try rates with 16bit */
- if(freq_fit(fr, &nf, f0<=2 ? 2 : f0, f2)) goto end; /* ... 8bit */
-
- /* try again with different stereoness */
- if(nf.channels == 2 && !(p->flags & MPG123_FORCE_STEREO)) nf.channels = 1;
- else if(nf.channels == 1 && !(p->flags & MPG123_FORCE_MONO)) nf.channels = 2;
-
- if(freq_fit(fr, &nf, f0, 2)) goto end; /* try rates with 16bit */
- if(freq_fit(fr, &nf, f0<=2 ? 2 : f0, f2)) goto end; /* ... 8bit */
-
- /* Here is the _bad_ end. */
- if(NOQUIET)
- {
- error5( "Unable to set up output format! Constraints: %s%s%li, %li or %liHz.",
- ( p->flags & MPG123_FORCE_STEREO ? "stereo, " :
- (p->flags & MPG123_FORCE_MONO ? "mono, " : "") ),
- (p->flags & MPG123_FORCE_8BIT ? "8bit, " : ""),
- frame_freq(fr), frame_freq(fr)>>1, frame_freq(fr)>>2 );
- }
-/* if(NOQUIET && p->verbose <= 1) print_capabilities(fr); */
-
- fr->err = MPG123_BAD_OUTFORMAT;
- return -1;
-
-end: /* Here is the _good_ end. */
- /* we had a successful match, now see if there's a change */
- if(nf.rate == fr->af.rate && nf.channels == fr->af.channels && nf.encoding == fr->af.encoding)
- {
- debug2("Old format with %i channels, and FORCE_MONO=%li", nf.channels, p->flags & MPG123_FORCE_MONO);
- return 0; /* the same format as before */
- }
- else /* a new format */
- {
- debug1("New format with %i channels!", nf.channels);
- fr->af.rate = nf.rate;
- fr->af.channels = nf.channels;
- fr->af.encoding = nf.encoding;
- /* Cache the size of one sample in bytes, for ease of use. */
- fr->af.encsize = mpg123_encsize(fr->af.encoding);
- if(fr->af.encsize < 1)
- {
- if(NOQUIET) error1("Some unknown encoding??? (%i)", fr->af.encoding);
-
- fr->err = MPG123_BAD_OUTFORMAT;
- return -1;
- }
- /* Set up the decoder synth format. Might differ. */
-#ifdef NO_SYNTH32
- /* Without high-precision synths, 16 bit signed is the basis for
- everything higher than 8 bit. */
- if(fr->af.encsize > 2)
- fr->af.dec_enc = MPG123_ENC_SIGNED_16;
- else
- {
-#endif
- switch(fr->af.encoding)
- {
-#ifndef NO_32BIT
- case MPG123_ENC_SIGNED_24:
- case MPG123_ENC_UNSIGNED_24:
- case MPG123_ENC_UNSIGNED_32:
- fr->af.dec_enc = MPG123_ENC_SIGNED_32;
- break;
-#endif
-#ifndef NO_16BIT
- case MPG123_ENC_UNSIGNED_16:
- fr->af.dec_enc = MPG123_ENC_SIGNED_16;
- break;
-#endif
- default:
- fr->af.dec_enc = fr->af.encoding;
- }
-#ifdef NO_SYNTH32
- }
-#endif
- fr->af.dec_encsize = mpg123_encsize(fr->af.dec_enc);
- return 1;
- }
-}
-
-int attribute_align_arg mpg123_format_none(mpg123_handle *mh)
-{
- int r;
- if(mh == NULL) return MPG123_BAD_HANDLE;
-
- r = mpg123_fmt_none(&mh->p);
- if(r != MPG123_OK){ mh->err = r; r = MPG123_ERR; }
-
- return r;
-}
-
-int attribute_align_arg mpg123_fmt_none(mpg123_pars *mp)
-{
- if(mp == NULL) return MPG123_BAD_PARS;
-
- if(PVERB(mp,3)) fprintf(stderr, "Note: Disabling all formats.\n");
-
- memset(mp->audio_caps,0,sizeof(mp->audio_caps));
- return MPG123_OK;
-}
-
-int attribute_align_arg mpg123_format_all(mpg123_handle *mh)
-{
- int r;
- if(mh == NULL) return MPG123_BAD_HANDLE;
-
- r = mpg123_fmt_all(&mh->p);
- if(r != MPG123_OK){ mh->err = r; r = MPG123_ERR; }
-
- return r;
-}
-
-int attribute_align_arg mpg123_fmt_all(mpg123_pars *mp)
-{
- size_t rate, ch, enc;
- if(mp == NULL) return MPG123_BAD_PARS;
-
- if(PVERB(mp,3)) fprintf(stderr, "Note: Enabling all formats.\n");
-
- for(ch=0; ch < NUM_CHANNELS; ++ch)
- for(rate=0; rate < MPG123_RATES+1; ++rate)
- for(enc=0; enc < MPG123_ENCODINGS; ++enc)
- mp->audio_caps[ch][rate][enc] = good_enc(my_encodings[enc]) ? 1 : 0;
-
- return MPG123_OK;
-}
-
-int attribute_align_arg mpg123_format(mpg123_handle *mh, long rate, int channels, int encodings)
-{
- int r;
- if(mh == NULL) return MPG123_BAD_HANDLE;
- r = mpg123_fmt(&mh->p, rate, channels, encodings);
- if(r != MPG123_OK){ mh->err = r; r = MPG123_ERR; }
-
- return r;
-}
-
-int attribute_align_arg mpg123_fmt(mpg123_pars *mp, long rate, int channels, int encodings)
-{
- int ie, ic, ratei;
- int ch[2] = {0, 1};
- if(mp == NULL) return MPG123_BAD_PARS;
- if(!(channels & (MPG123_MONO|MPG123_STEREO))) return MPG123_BAD_CHANNEL;
-
- if(PVERB(mp,3)) fprintf(stderr, "Note: Want to enable format %li/%i for encodings 0x%x.\n", rate, channels, encodings);
-
- if(!(channels & MPG123_STEREO)) ch[1] = 0; /* {0,0} */
- else if(!(channels & MPG123_MONO)) ch[0] = 1; /* {1,1} */
- ratei = rate2num(mp, rate);
- if(ratei < 0) return MPG123_BAD_RATE;
-
- /* now match the encodings */
- for(ic = 0; ic < 2; ++ic)
- {
- for(ie = 0; ie < MPG123_ENCODINGS; ++ie)
- if(good_enc(my_encodings[ie]) && ((my_encodings[ie] & encodings) == my_encodings[ie]))
- mp->audio_caps[ch[ic]][ratei][ie] = 1;
-
- if(ch[0] == ch[1]) break; /* no need to do it again */
- }
-
- return MPG123_OK;
-}
-
-int attribute_align_arg mpg123_format_support(mpg123_handle *mh, long rate, int encoding)
-{
- if(mh == NULL) return 0;
- else return mpg123_fmt_support(&mh->p, rate, encoding);
-}
-
-int attribute_align_arg mpg123_fmt_support(mpg123_pars *mp, long rate, int encoding)
-{
- int ch = 0;
- int ratei, enci;
- ratei = rate2num(mp, rate);
- enci = enc2num(encoding);
- if(mp == NULL || ratei < 0 || enci < 0) return 0;
- if(mp->audio_caps[0][ratei][enci]) ch |= MPG123_MONO;
- if(mp->audio_caps[1][ratei][enci]) ch |= MPG123_STEREO;
- return ch;
-}
-
-/* Call this one to ensure that any valid format will be something different than this. */
-void invalidate_format(struct audioformat *af)
-{
- af->encoding = 0;
- af->rate = 0;
- af->channels = 0;
-}
-
-/* Number of bytes the decoder produces. */
-off_t decoder_synth_bytes(mpg123_handle *fr, off_t s)
-{
- return s * fr->af.dec_encsize * fr->af.channels;
-}
-
-/* Samples/bytes for output buffer after post-processing. */
-/* take into account: channels, bytes per sample -- NOT resampling!*/
-off_t samples_to_bytes(mpg123_handle *fr , off_t s)
-{
- return s * fr->af.encsize * fr->af.channels;
-}
-
-off_t bytes_to_samples(mpg123_handle *fr , off_t b)
-{
- return b / fr->af.encsize / fr->af.channels;
-}
-
-/* Number of bytes needed for decoding _and_ post-processing. */
-off_t outblock_bytes(mpg123_handle *fr, off_t s)
-{
- int encsize = (fr->af.encoding & MPG123_ENC_24)
- ? 4 /* Intermediate 32 bit. */
- : (fr->af.encsize > fr->af.dec_encsize
- ? fr->af.encsize
- : fr->af.dec_encsize);
- return s * encsize * fr->af.channels;
-}
-
-#ifndef NO_32BIT
-/* Remove every fourth byte, facilitating conversion from 32 bit to 24 bit integers.
- This has to be aware of endianness, of course. */
-static void chop_fourth_byte(struct outbuffer *buf)
-{
- unsigned char *wpos = buf->data;
- unsigned char *rpos = buf->data;
-#ifdef WORDS_BIGENDIAN
- while((size_t) (rpos - buf->data + 4) <= buf->fill)
- {
- /* Really stupid: Copy, increment. Byte per byte. */
- *wpos = *rpos;
- wpos++; rpos++;
- *wpos = *rpos;
- wpos++; rpos++;
- *wpos = *rpos;
- wpos++; rpos++;
- rpos++; /* Skip the lowest byte (last). */
- }
-#else
- while((size_t) (rpos - buf->data + 4) <= buf->fill)
- {
- /* Really stupid: Copy, increment. Byte per byte. */
- rpos++; /* Skip the lowest byte (first). */
- *wpos = *rpos;
- wpos++; rpos++;
- *wpos = *rpos;
- wpos++; rpos++;
- *wpos = *rpos;
- wpos++; rpos++;
- }
-#endif
- buf->fill = wpos-buf->data;
-}
-
-static void conv_s32_to_u32(struct outbuffer *buf)
-{
- size_t i;
- int32_t *ssamples = (int32_t*) buf->data;
- uint32_t *usamples = (uint32_t*) buf->data;
- size_t count = buf->fill/sizeof(int32_t);
-
- for(i=0; i<count; ++i)
- {
- /* Different strategy since we don't have a larger type at hand.
- Also watch out for silly +-1 fun because integer constants are signed in C90! */
- if(ssamples[i] >= 0)
- usamples[i] = (uint32_t)ssamples[i] + 2147483647+1;
- /* The smallest value goes zero. */
- else if(ssamples[i] == ((int32_t)-2147483647-1))
- usamples[i] = 0;
- /* Now -value is in the positive range of signed int ... so it's a possible value at all. */
- else
- usamples[i] = (uint32_t)2147483647+1 - (uint32_t)(-ssamples[i]);
- }
-}
-
-#endif
-
-
-/* We always assume that whole numbers are written!
- partials will be cut out. */
-
-static const char *bufsizeerr = "Fatal: Buffer too small for postprocessing!";
-
-
-#ifndef NO_16BIT
-
-static void conv_s16_to_u16(struct outbuffer *buf)
-{
- size_t i;
- int16_t *ssamples = (int16_t*) buf->data;
- uint16_t *usamples = (uint16_t*)buf->data;
- size_t count = buf->fill/sizeof(int16_t);
-
- for(i=0; i<count; ++i)
- {
- long tmp = (long)ssamples[i]+32768;
- usamples[i] = (uint16_t)tmp;
- }
-}
-
-#ifndef NO_REAL
-static void conv_s16_to_f32(struct outbuffer *buf)
-{
- ssize_t i;
- int16_t *in = (int16_t*) buf->data;
- float *out = (float*) buf->data;
- size_t count = buf->fill/sizeof(int16_t);
- /* Does that make any sense? In x86, there is an actual instruction to divide
- float by integer ... but then, if we have that FPU, we don't really need
- fixed point decoder hacks ...? */
- float scale = 1./SHORT_SCALE;
-
- if(buf->size < count*sizeof(float))
- {
- error1("%s", bufsizeerr);
- return;
- }
-
- /* Work from the back since output is bigger. */
- for(i=count-1; i>=0; --i)
- out[i] = (float)in[i] * scale;
-
- buf->fill = count*sizeof(float);
-}
-#endif
-
-#ifndef NO_32BIT
-static void conv_s16_to_s32(struct outbuffer *buf)
-{
- ssize_t i;
- int16_t *in = (int16_t*) buf->data;
- int32_t *out = (int32_t*) buf->data;
- size_t count = buf->fill/sizeof(int16_t);
-
- if(buf->size < count*sizeof(int32_t))
- {
- error1("%s", bufsizeerr);
- return;
- }
-
- /* Work from the back since output is bigger. */
- for(i=count-1; i>=0; --i)
- {
- out[i] = in[i];
- /* Could just shift bytes, but would have to mess with sign bit. */
- out[i] *= S32_RESCALE;
- }
-
- buf->fill = count*sizeof(int32_t);
-}
-#endif
-#endif
-
-
-void postprocess_buffer(mpg123_handle *fr)
-{
- /*
- This caters for the final output formats that are never produced by
- decoder synth directly (wide unsigned and 24 bit formats) or that are
- missing because of limited decoder precision (16 bit synth but 32 or
- 24 bit output).
- */
- switch(fr->af.dec_enc)
- {
-#ifndef NO_32BIT
- case MPG123_ENC_SIGNED_32:
- switch(fr->af.encoding)
- {
- case MPG123_ENC_UNSIGNED_32:
- conv_s32_to_u32(&fr->buffer);
- break;
- case MPG123_ENC_UNSIGNED_24:
- conv_s32_to_u32(&fr->buffer);
- chop_fourth_byte(&fr->buffer);
- break;
- case MPG123_ENC_SIGNED_24:
- chop_fourth_byte(&fr->buffer);
- break;
- }
- break;
-#endif
-#ifndef NO_16BIT
- case MPG123_ENC_SIGNED_16:
- switch(fr->af.encoding)
- {
- case MPG123_ENC_UNSIGNED_16:
- conv_s16_to_u16(&fr->buffer);
- break;
-#ifndef NO_REAL
- case MPG123_ENC_FLOAT_32:
- conv_s16_to_f32(&fr->buffer);
- break;
-#endif
-#ifndef NO_32BIT
- case MPG123_ENC_SIGNED_32:
- conv_s16_to_s32(&fr->buffer);
- break;
- case MPG123_ENC_UNSIGNED_32:
- conv_s16_to_s32(&fr->buffer);
- conv_s32_to_u32(&fr->buffer);
- break;
- case MPG123_ENC_UNSIGNED_24:
- conv_s16_to_s32(&fr->buffer);
- conv_s32_to_u32(&fr->buffer);
- chop_fourth_byte(&fr->buffer);
- break;
- case MPG123_ENC_SIGNED_24:
- conv_s16_to_s32(&fr->buffer);
- chop_fourth_byte(&fr->buffer);
- break;
-#endif
- }
- break;
-#endif
- }
-}
projects / reactos.git / blobdiff