void
encoder_progress( lame_global_flags const* gf )
{
if (global_ui_config.silent <= 0) {
int const frames = lame_get_frameNum(gf);
int const frames_diff = frames - global_encoder_progress.last_frame_num;
if (global_ui_config.update_interval <= 0) { /* most likely --disptime x not used */
if (frames_diff < 100 && frames_diff != 0) { /* true, most of the time */
return;
}
global_encoder_progress.last_frame_num = (frames/100)*100;
}
else {
if (frames != 0 && frames != 9) {
double const act = GetRealTime();
double const dif = act - global_encoder_progress.last_time;
if (dif >= 0 && dif < global_ui_config.update_interval) {
return;
}
}
global_encoder_progress.last_time = GetRealTime(); /* from now! disp_time seconds */
}
if (global_ui_config.brhist) {
brhist_jump_back();
}
timestatus(gf);
if (global_ui_config.brhist) {
brhist_disp(gf);
}
console_flush();
}
}
int lame_encode_finish(lame_global_flags *gfp,char *mp3buffer, int mp3buffer_size)
{
int imp3,mp3count,mp3buffer_size_remaining;
short int buffer[2][1152];
memset((char *)buffer,0,sizeof(buffer));
mp3count = 0;
while (mf_samples_to_encode > 0) {
mp3buffer_size_remaining = mp3buffer_size - mp3count;
/* if user specifed buffer size = 0, dont check size */
if (mp3buffer_size == 0) mp3buffer_size_remaining=0;
imp3=lame_encode(gfp,buffer,mp3buffer,mp3buffer_size_remaining);
if (imp3 == -1) {
/* fatel error: mp3buffer too small */
desalloc_buffer(&bs); /* Deallocate all buffers */
return -1;
}
mp3buffer += imp3;
mp3count += imp3;
mf_samples_to_encode -= gfp->framesize;
}
gfp->frameNum--;
if (!gfp->gtkflag && !gfp->silent) {
timestatus(gfp->out_samplerate,gfp->frameNum,gfp->totalframes,gfp->framesize);
#ifdef BRHIST
if (disp_brhist)
{
brhist_add_count();
brhist_disp();
brhist_disp_total(gfp);
}
#endif
fprintf(stderr,"\n");
fflush(stderr);
}
III_FlushBitstream();
mp3buffer_size_remaining = mp3buffer_size - mp3count;
/* if user specifed buffer size = 0, dont check size */
if (mp3buffer_size == 0) mp3buffer_size_remaining=0;
imp3= copy_buffer(mp3buffer,mp3buffer_size_remaining,&bs);
if (imp3 == -1) {
/* fatel error: mp3buffer too small */
desalloc_buffer(&bs); /* Deallocate all buffers */
return -1;
}
mp3count += imp3;
desalloc_buffer(&bs); /* Deallocate all buffers */
return mp3count;
}
void
encoder_progress_end( lame_global_flags const* gf )
{
if (global_ui_config.silent <= 0) {
if (global_ui_config.brhist) {
brhist_jump_back();
}
timestatus(gf);
if (global_ui_config.brhist) {
brhist_disp(gf);
}
timestatus_finish();
}
}
void timestatus_klemm ( const lame_global_flags* const gfp )
{
static double last_time = 0.;
if ( silent <= 0 )
if ( lame_get_frameNum(gfp) == 0 ||
lame_get_frameNum(gfp) == 9 ||
GetRealTime () - last_time >= update_interval ||
GetRealTime () - last_time < 0 ) {
#ifdef BRHIST
brhist_jump_back();
#endif
timestatus ( lame_get_out_samplerate( gfp ),
lame_get_frameNum(gfp),
lame_get_totalframes(gfp),
lame_get_framesize(gfp) );
#ifdef BRHIST
if ( brhist ) {
brhist_disp ( gfp );
}
#endif
last_time = GetRealTime (); /* from now! disp_time seconds */
}
}
int
lame_encoder(lame_global_flags * gf, FILE * outf, int nogap, char *inPath,
char *outPath)
{
unsigned char mp3buffer[LAME_MAXMP3BUFFER];
int Buffer[2][1152];
int iread, imp3;
static const char *mode_names[2][4] = {
{"stereo", "j-stereo", "dual-ch", "single-ch"},
{"stereo", "force-ms", "dual-ch", "single-ch"}
};
int frames;
if (silent < 10) {
lame_print_config(gf); /* print useful information about options being used */
fprintf(stderr, "Encoding %s%s to %s\n",
strcmp(inPath, "-") ? inPath : "<stdin>",
strlen(inPath) + strlen(outPath) < 66 ? "" : "\n ",
strcmp(outPath, "-") ? outPath : "<stdout>");
fprintf(stderr,
"Encoding as %g kHz ", 1.e-3 * lame_get_out_samplerate(gf));
{
const char *appendix = "";
switch (lame_get_VBR(gf)) {
case vbr_mt:
case vbr_rh:
case vbr_mtrh:
appendix = "ca. ";
fprintf(stderr, "VBR(q=%i)", lame_get_VBR_q(gf));
break;
case vbr_abr:
fprintf(stderr, "average %d kbps",
lame_get_VBR_mean_bitrate_kbps(gf));
break;
default:
fprintf(stderr, "%3d kbps", lame_get_brate(gf));
break;
}
fprintf(stderr, " %s MPEG-%u%s Layer III (%s%gx) qval=%i\n",
mode_names[lame_get_force_ms(gf)][lame_get_mode(gf)],
2 - lame_get_version(gf),
lame_get_out_samplerate(gf) < 16000 ? ".5" : "",
appendix,
0.1 * (int) (10. * lame_get_compression_ratio(gf) + 0.5),
lame_get_quality(gf));
}
if (silent <= -10)
lame_print_internals(gf);
fflush(stderr);
}
/* encode until we hit eof */
do {
/* read in 'iread' samples */
iread = get_audio(gf, Buffer);
frames = lame_get_frameNum(gf);
/********************** status display *****************************/
if (silent <= 0) {
if (update_interval > 0) {
timestatus_klemm(gf);
}
else {
if (0 == frames % 50) {
#ifdef BRHIST
brhist_jump_back();
#endif
timestatus(lame_get_out_samplerate(gf),
frames,
lame_get_totalframes(gf),
lame_get_framesize(gf));
#ifdef BRHIST
if (brhist)
brhist_disp(gf);
#endif
}
}
}
/* encode */
imp3 = lame_encode_buffer_int(gf, Buffer[0], Buffer[1], iread,
mp3buffer, sizeof(mp3buffer));
/* was our output buffer big enough? */
if (imp3 < 0) {
if (imp3 == -1)
fprintf(stderr, "mp3 buffer is not big enough... \n");
else
fprintf(stderr, "mp3 internal error: error code=%i\n", imp3);
return 1;
}
if (fwrite(mp3buffer, 1, imp3, outf) != imp3) {
fprintf(stderr, "Error writing mp3 output \n");
return 1;
}
} while (iread);
if (nogap)
imp3 = lame_encode_flush_nogap(gf, mp3buffer, sizeof(mp3buffer)); /* may return one more mp3 frame */
else
imp3 = lame_encode_flush(gf, mp3buffer, sizeof(mp3buffer)); /* may return one more mp3 frame */
if (imp3 < 0) {
if (imp3 == -1)
fprintf(stderr, "mp3 buffer is not big enough... \n");
else
fprintf(stderr, "mp3 internal error: error code=%i\n", imp3);
return 1;
}
if (silent <= 0) {
#ifdef BRHIST
brhist_jump_back();
#endif
frames = lame_get_frameNum(gf);
timestatus(lame_get_out_samplerate(gf),
frames, lame_get_totalframes(gf), lame_get_framesize(gf));
#ifdef BRHIST
if (brhist) {
brhist_disp(gf);
}
brhist_disp_total(gf);
#endif
timestatus_finish();
}
fwrite(mp3buffer, 1, imp3, outf);
return 0;
}
/************************************************************************
*
* encodeframe() Layer 3
*
* encode a single frame
*
************************************************************************
lame_encode_frame()
gr 0 gr 1
inbuf: |--------------|---------------|-------------|
MDCT output: |--------------|---------------|-------------|
FFT's <---------1024---------->
<---------1024-------->
inbuf = buffer of PCM data size=MP3 framesize
encoder acts on inbuf[ch][0], but output is delayed by MDCTDELAY
so the MDCT coefficints are from inbuf[ch][-MDCTDELAY]
psy-model FFT has a 1 granule day, so we feed it data for the next granule.
FFT is centered over granule: 224+576+224
So FFT starts at: 576-224-MDCTDELAY
MPEG2: FFT ends at: BLKSIZE+576-224-MDCTDELAY
MPEG1: FFT ends at: BLKSIZE+2*576-224-MDCTDELAY (1904)
FFT starts at 576-224-MDCTDELAY (304) = 576-FFTOFFSET
*/
int lame_encode_frame(lame_global_flags *gfp,
short int inbuf_l[],short int inbuf_r[],
int mf_size,char *mp3buf, int mp3buf_size)
{
static unsigned long frameBits;
static unsigned long bitsPerSlot;
static FLOAT8 frac_SpF;
static FLOAT8 slot_lag;
static unsigned long sentBits = 0;
FLOAT8 xr[2][2][576];
int l3_enc[2][2][576];
int mp3count;
III_psy_ratio masking_ratio[2][2]; /*LR ratios */
III_psy_ratio masking_MS_ratio[2][2]; /*MS ratios */
III_psy_ratio (*masking)[2][2]; /*LR ratios and MS ratios*/
III_scalefac_t scalefac[2][2];
short int *inbuf[2];
typedef FLOAT8 pedata[2][2];
pedata pe,pe_MS;
pedata *pe_use;
int ch,gr,mean_bits;
int bitsPerFrame;
int check_ms_stereo;
static FLOAT8 ms_ratio[2]={0,0};
FLOAT8 ms_ratio_next=0;
FLOAT8 ms_ratio_prev=0;
static FLOAT8 ms_ener_ratio[2]={0,0};
memset((char *) masking_ratio, 0, sizeof(masking_ratio));
memset((char *) masking_MS_ratio, 0, sizeof(masking_MS_ratio));
memset((char *) scalefac, 0, sizeof(scalefac));
inbuf[0]=inbuf_l;
inbuf[1]=inbuf_r;
gfp->mode_ext = MPG_MD_LR_LR;
if (gfp->frameNum==0 ) {
/* Figure average number of 'slots' per frame. */
FLOAT8 avg_slots_per_frame;
FLOAT8 sampfreq = gfp->out_samplerate/1000.0;
int bit_rate = gfp->brate;
sentBits = 0;
bitsPerSlot = 8;
avg_slots_per_frame = (bit_rate*gfp->framesize) /
(sampfreq* bitsPerSlot);
/* -f fast-math option causes some strange rounding here, be carefull: */
frac_SpF = avg_slots_per_frame - floor(avg_slots_per_frame + 1e-9);
if (fabs(frac_SpF) < 1e-9) frac_SpF = 0;
slot_lag = -frac_SpF;
gfp->padding = 1;
if (frac_SpF==0) gfp->padding = 0;
/* check FFT will not use a negative starting offset */
assert(576>=FFTOFFSET);
/* check if we have enough data for FFT */
assert(mf_size>=(BLKSIZE+gfp->framesize-FFTOFFSET));
}
/********************** padding *****************************/
switch (gfp->padding_type) {
case 0:
gfp->padding=0;
break;
case 1:
gfp->padding=1;
break;
case 2:
default:
if (gfp->VBR) {
gfp->padding=0;
} else {
if (gfp->disable_reservoir) {
gfp->padding = 0;
/* if the user specified --nores, dont very gfp->padding either */
/* tiny changes in frac_SpF rounding will cause file differences */
}else{
if (frac_SpF != 0) {
if (slot_lag > (frac_SpF-1.0) ) {
slot_lag -= frac_SpF;
gfp->padding = 0;
}
else {
gfp->padding = 1;
slot_lag += (1-frac_SpF);
}
}
}
}
}
/********************** status display *****************************/
if (!gfp->gtkflag && !gfp->silent) {
int mod = gfp->version == 0 ? 200 : 50;
if (gfp->frameNum%mod==0) {
timestatus(gfp->out_samplerate,gfp->frameNum,gfp->totalframes,gfp->framesize);
#ifdef BRHIST
if (disp_brhist)
{
brhist_add_count();
brhist_disp();
}
#endif
}
}
if (gfp->psymodel) {
/* psychoacoustic model
* psy model has a 1 granule (576) delay that we must compensate for
* (mt 6/99).
*/
short int *bufp[2]; /* address of beginning of left & right granule */
int blocktype[2];
ms_ratio_prev=ms_ratio[gfp->mode_gr-1];
for (gr=0; gr < gfp->mode_gr ; gr++) {
for ( ch = 0; ch < gfp->stereo; ch++ )
bufp[ch] = &inbuf[ch][576 + gr*576-FFTOFFSET];
L3psycho_anal( gfp,bufp, gr,
&ms_ratio[gr],&ms_ratio_next,&ms_ener_ratio[gr],
masking_ratio, masking_MS_ratio,
pe[gr],pe_MS[gr],blocktype);
for ( ch = 0; ch < gfp->stereo; ch++ )
l3_side.gr[gr].ch[ch].tt.block_type=blocktype[ch];
}
}else{
for (gr=0; gr < gfp->mode_gr ; gr++)
for ( ch = 0; ch < gfp->stereo; ch++ ) {
l3_side.gr[gr].ch[ch].tt.block_type=NORM_TYPE;
pe[gr][ch]=700;
}
}
/* block type flags */
for( gr = 0; gr < gfp->mode_gr; gr++ ) {
for ( ch = 0; ch < gfp->stereo; ch++ ) {
gr_info *cod_info = &l3_side.gr[gr].ch[ch].tt;
cod_info->mixed_block_flag = 0; /* never used by this model */
if (cod_info->block_type == NORM_TYPE )
cod_info->window_switching_flag = 0;
else
cod_info->window_switching_flag = 1;
}
}
/* polyphase filtering / mdct */
mdct_sub48(gfp,inbuf[0], inbuf[1], xr, &l3_side);
/* use m/s gfp->stereo? */
check_ms_stereo = (gfp->mode == MPG_MD_JOINT_STEREO);
if (check_ms_stereo) {
/* make sure block type is the same in each channel */
check_ms_stereo =
(l3_side.gr[0].ch[0].tt.block_type==l3_side.gr[0].ch[1].tt.block_type) &&
(l3_side.gr[1].ch[0].tt.block_type==l3_side.gr[1].ch[1].tt.block_type);
}
if (check_ms_stereo) {
/* ms_ratio = is like the ratio of side_energy/total_energy */
FLOAT8 ms_ratio_ave,ms_ener_ratio_ave;
/* ms_ratio_ave = .5*(ms_ratio[0] + ms_ratio[1]);*/
ms_ratio_ave = .25*(ms_ratio[0] + ms_ratio[1]+
ms_ratio_prev + ms_ratio_next);
ms_ener_ratio_ave = .5*(ms_ener_ratio[0]+ms_ener_ratio[1]);
if ( ms_ratio_ave <.35 /*&& ms_ener_ratio_ave<.75*/ ) gfp->mode_ext = MPG_MD_MS_LR;
}
if (gfp->force_ms) gfp->mode_ext = MPG_MD_MS_LR;
#ifdef HAVEGTK
if (gfp->gtkflag) {
int j;
for ( gr = 0; gr < gfp->mode_gr; gr++ ) {
for ( ch = 0; ch < gfp->stereo; ch++ ) {
pinfo->ms_ratio[gr]=ms_ratio[gr];
pinfo->ms_ener_ratio[gr]=ms_ener_ratio[gr];
pinfo->blocktype[gr][ch]=
l3_side.gr[gr].ch[ch].tt.block_type;
for ( j = 0; j < 576; j++ ) pinfo->xr[gr][ch][j]=xr[gr][ch][j];
/* if MS stereo, switch to MS psy data */
if (gfp->mode_ext==MPG_MD_MS_LR) {
pinfo->pe[gr][ch]=pinfo->pe[gr][ch+2];
pinfo->ers[gr][ch]=pinfo->ers[gr][ch+2];
memcpy(pinfo->energy[gr][ch],pinfo->energy[gr][ch+2],
sizeof(pinfo->energy[gr][ch]));
}
}
}
}
#endif
/* bit and noise allocation */
if (MPG_MD_MS_LR == gfp->mode_ext) {
masking = &masking_MS_ratio; /* use MS masking */
pe_use=&pe_MS;
} else {
masking = &masking_ratio; /* use LR masking */
pe_use=&pe;
}
/*
VBR_iteration_loop_new( gfp,*pe_use, ms_ratio, xr, masking, &l3_side, l3_enc,
&scalefac);
*/
if (gfp->VBR) {
VBR_iteration_loop( gfp,*pe_use, ms_ratio, xr, *masking, &l3_side, l3_enc,
scalefac);
}else{
iteration_loop( gfp,*pe_use, ms_ratio, xr, *masking, &l3_side, l3_enc,
scalefac);
}
#ifdef BRHIST
brhist_temp[gfp->bitrate_index]++;
#endif
/* write the frame to the bitstream */
getframebits(gfp,&bitsPerFrame,&mean_bits);
III_format_bitstream( gfp,bitsPerFrame, l3_enc, &l3_side,
scalefac, &bs);
frameBits = bs.totbit - sentBits;
if ( frameBits % bitsPerSlot ) /* a program failure */
fprintf( stderr, "Sent %ld bits = %ld slots plus %ld\n",
frameBits, frameBits/bitsPerSlot,
frameBits%bitsPerSlot );
sentBits += frameBits;
/* copy mp3 bit buffer into array */
mp3count = copy_buffer(mp3buf,mp3buf_size,&bs);
if (gfp->bWriteVbrTag) AddVbrFrame((int)(sentBits/8));
#ifdef HAVEGTK
if (gfp->gtkflag) {
int j;
for ( ch = 0; ch < gfp->stereo; ch++ ) {
for ( j = 0; j < FFTOFFSET; j++ )
pinfo->pcmdata[ch][j] = pinfo->pcmdata[ch][j+gfp->framesize];
for ( j = FFTOFFSET; j < 1600; j++ ) {
pinfo->pcmdata[ch][j] = inbuf[ch][j-FFTOFFSET];
}
}
}
#endif
gfp->frameNum++;
return mp3count;
}