int doInit(LameConf* conf) {
int result;
conf->gf=lame_init();
if (conf->gf==NULL) {
//throwRuntimeException(env, "out of memory");
return org_tritonus_lowlevel_lame_Lame_OUT_OF_MEMORY;
}
lame_set_num_channels(conf->gf, conf->channels);
lame_set_in_samplerate(conf->gf, conf->sampleRate);
if (conf->mode!=org_tritonus_lowlevel_lame_Lame_CHANNEL_MODE_AUTO) {
lame_set_mode(conf->gf, conf->mode);
}
if (conf->VBR) {
lame_set_VBR(conf->gf, vbr_default);
lame_set_VBR_q(conf->gf, conf->quality);
} else {
if (conf->bitrate!=org_tritonus_lowlevel_lame_Lame_BITRATE_AUTO) {
lame_set_brate(conf->gf, conf->bitrate);
}
}
lame_set_quality(conf->gf, conf->quality);
result=lame_init_params(conf->gf);
// return effective values
conf->sampleRate=lame_get_out_samplerate(conf->gf);
conf->bitrate=lame_get_brate(conf->gf);
conf->mode=lame_get_mode(conf->gf);
conf->VBR=lame_get_VBR(conf->gf);
conf->quality=(conf->VBR)?lame_get_VBR_q(conf->gf):lame_get_quality(conf->gf);
conf->mpegVersion=lame_get_version(conf->gf);
return result;
}
static void
apply_vbr_preset(lame_global_flags * gfp, int a, int enforce)
{
vbr_presets_t const *vbr_preset = get_vbr_preset(lame_get_VBR(gfp));
float x = gfp->VBR_q_frac;
vbr_presets_t p = vbr_preset[a];
vbr_presets_t q = vbr_preset[a + 1];
vbr_presets_t const *set = &p;
NOOP(vbr_q);
NOOP(quant_comp);
NOOP(quant_comp_s);
NOOP(expY);
LERP(st_lrm);
LERP(st_s);
LERP(masking_adj);
LERP(masking_adj_short);
LERP(ath_lower);
LERP(ath_curve);
LERP(ath_sensitivity);
LERP(interch);
NOOP(safejoint);
LERP(sfb21mod);
LERP(msfix);
LERP(minval);
LERP(ath_fixpoint);
(void) lame_set_VBR_q(gfp, set->vbr_q);
SET_OPTION(quant_comp, set->quant_comp, -1);
SET_OPTION(quant_comp_short, set->quant_comp_s, -1);
if (set->expY) {
(void) lame_set_experimentalY(gfp, set->expY);
}
SET_OPTION(short_threshold_lrm, set->st_lrm, -1);
SET_OPTION(short_threshold_s, set->st_s, -1);
SET_OPTION(maskingadjust, set->masking_adj, 0);
SET_OPTION(maskingadjust_short, set->masking_adj_short, 0);
if (lame_get_VBR(gfp) == vbr_mt || lame_get_VBR(gfp) == vbr_mtrh) {
lame_set_ATHtype(gfp, 5);
}
SET_OPTION(ATHlower, set->ath_lower, 0);
SET_OPTION(ATHcurve, set->ath_curve, -1);
SET_OPTION(athaa_sensitivity, set->ath_sensitivity, 0);
if (set->interch > 0) {
SET_OPTION(interChRatio, set->interch, -1);
}
/* parameters for which there is no proper set/get interface */
if (set->safejoint > 0) {
(void) lame_set_exp_nspsytune(gfp, lame_get_exp_nspsytune(gfp) | 2);
}
if (set->sfb21mod > 0) {
int const nsp = lame_get_exp_nspsytune(gfp);
int const val = (nsp >> 20) & 63;
if (val == 0) {
int const sf21mod = (set->sfb21mod << 20) | nsp;
(void) lame_set_exp_nspsytune(gfp, sf21mod);
}
}
static void
apply_vbr_preset(lame_global_flags * gfp, int a, int enforce)
{
vbr_presets_t const *vbr_preset = lame_get_VBR(gfp) == vbr_rh ? &vbr_old_switch_map[0]
: &vbr_psy_switch_map[0];
float x = gfp->VBR_q_frac;
vbr_presets_t p = vbr_preset[a];
vbr_presets_t q = vbr_preset[a + 1];
vbr_presets_t const *set = &p;
NOOP(vbr_q);
NOOP(quant_comp);
NOOP(quant_comp_s);
NOOP(expY);
LERP(st_lrm);
LERP(st_s);
LERP(masking_adj);
LERP(masking_adj_short);
LERP(ath_lower);
LERP(ath_curve);
LERP(ath_sensitivity);
LERP(interch);
NOOP(safejoint);
NOOP(sfb21mod);
LERP(msfix);
(void) lame_set_VBR_q(gfp, set->vbr_q);
SET_OPTION(quant_comp, set->quant_comp, -1);
SET_OPTION(quant_comp_short, set->quant_comp_s, -1);
if (set->expY) {
(void) lame_set_experimentalY(gfp, set->expY);
}
SET_OPTION(short_threshold_lrm, set->st_lrm, -1);
SET_OPTION(short_threshold_s, set->st_s, -1);
SET_OPTION(maskingadjust, set->masking_adj, 0);
SET_OPTION(maskingadjust_short, set->masking_adj_short, 0);
SET_OPTION(ATHlower, set->ath_lower, 0);
SET_OPTION(ATHcurve, set->ath_curve, -1);
SET_OPTION(athaa_sensitivity, set->ath_sensitivity, 0);
if (set->interch > 0) {
SET_OPTION(interChRatio, set->interch, -1);
}
/* parameters for which there is no proper set/get interface */
if (set->safejoint > 0) {
(void) lame_set_exp_nspsytune(gfp, lame_get_exp_nspsytune(gfp) | set->safejoint);
}
if (set->sfb21mod > 0) {
(void) lame_set_exp_nspsytune(gfp, lame_get_exp_nspsytune(gfp) | (set->sfb21mod << 20));
}
SET_OPTION(msfix, set->msfix, -1);
if (enforce == 0) {
gfp->VBR_q = a;
gfp->VBR_q_frac = x;
}
}
static bool
lame_encoder_setup(struct lame_encoder *encoder, GError **error)
{
if (encoder->quality >= -1.0) {
/* a quality was configured (VBR) */
if (0 != lame_set_VBR(encoder->gfp, vbr_rh)) {
g_set_error(error, lame_encoder_quark(), 0,
"error setting lame VBR mode");
return false;
}
if (0 != lame_set_VBR_q(encoder->gfp, encoder->quality)) {
g_set_error(error, lame_encoder_quark(), 0,
"error setting lame VBR quality");
return false;
}
} else {
/* a bit rate was configured */
if (0 != lame_set_brate(encoder->gfp, encoder->bitrate)) {
g_set_error(error, lame_encoder_quark(), 0,
"error setting lame bitrate");
return false;
}
}
if (0 != lame_set_num_channels(encoder->gfp,
encoder->audio_format.channels)) {
g_set_error(error, lame_encoder_quark(), 0,
"error setting lame num channels");
return false;
}
if (0 != lame_set_in_samplerate(encoder->gfp,
encoder->audio_format.sample_rate)) {
g_set_error(error, lame_encoder_quark(), 0,
"error setting lame sample rate");
return false;
}
if (0 != lame_set_out_samplerate(encoder->gfp,
encoder->audio_format.sample_rate)) {
g_set_error(error, lame_encoder_quark(), 0,
"error setting lame out sample rate");
return false;
}
if (0 > lame_init_params(encoder->gfp)) {
g_set_error(error, lame_encoder_quark(), 0,
"error initializing lame params");
return false;
}
return true;
}
//////////////////////////////////////////////////////////////////////
// Init - initialized or reiniyialized encoder SDK with given input
// and output settings
//////////////////////////////////////////////////////////////////////
HRESULT CEncoder::Init()
{
CAutoLock l(&m_lock);
m_outOffset = 0;
m_outReadOffset = 0;
m_bFinished = FALSE;
m_frameCount = 0;
if (!pgf)
{
if (!m_bInpuTypeSet || !m_bOutpuTypeSet)
return E_UNEXPECTED;
// Init Lame library
// note: newer, safer interface which doesn't
// allow or require direct access to 'gf' struct is being written
// see the file 'API' included with LAME.
if (pgf = lame_init())
{
lame_set_num_channels(pgf, m_wfex.nChannels);
lame_set_in_samplerate(pgf, m_wfex.nSamplesPerSec);
lame_set_out_samplerate(pgf, m_mabsi.dwSampleRate);
if ((lame_get_out_samplerate(pgf) >= 32000) && (m_mabsi.dwBitrate < 32))
lame_set_brate(pgf, 32);
else
lame_set_brate(pgf, m_mabsi.dwBitrate);
lame_set_VBR(pgf, m_mabsi.vmVariable);
lame_set_VBR_min_bitrate_kbps(pgf, m_mabsi.dwVariableMin);
lame_set_VBR_max_bitrate_kbps(pgf, m_mabsi.dwVariableMax);
lame_set_copyright(pgf, m_mabsi.bCopyright);
lame_set_original(pgf, m_mabsi.bOriginal);
lame_set_error_protection(pgf, m_mabsi.bCRCProtect);
lame_set_bWriteVbrTag(pgf, m_mabsi.dwXingTag);
lame_set_strict_ISO(pgf, m_mabsi.dwStrictISO);
lame_set_VBR_hard_min(pgf, m_mabsi.dwEnforceVBRmin);
if (lame_get_num_channels(pgf) == 2 && !m_mabsi.bForceMono)
{
//int act_br = pgf->VBR ? pgf->VBR_min_bitrate_kbps + pgf->VBR_max_bitrate_kbps / 2 : pgf->brate;
// Disabled. It's for user's consideration now
//int rel = pgf->out_samplerate / (act_br + 1);
//pgf->mode = rel < 200 ? m_mabsi.ChMode : JOINT_STEREO;
lame_set_mode(pgf, m_mabsi.ChMode);
}
else
lame_set_mode(pgf, MONO);
if (lame_get_mode(pgf) == JOINT_STEREO)
lame_set_force_ms(pgf, m_mabsi.dwForceMS);
else
lame_set_force_ms(pgf, 0);
// pgf->mode_fixed = m_mabsi.dwModeFixed;
if (m_mabsi.dwVoiceMode != 0)
{
lame_set_lowpassfreq(pgf,12000);
///pgf->VBR_max_bitrate_kbps = 160;
}
if (m_mabsi.dwKeepAllFreq != 0)
{
///pgf->lowpassfreq = -1;
///pgf->highpassfreq = -1;
/// not available anymore
}
lame_set_quality(pgf, m_mabsi.dwQuality);
lame_set_VBR_q(pgf, m_mabsi.dwVBRq);
lame_init_params(pgf);
// encoder delay compensation
{
int const nch = lame_get_num_channels(pgf);
short * start_padd = (short *)calloc(48, nch * sizeof(short));
int out_bytes = 0;
if (nch == 2)
out_bytes = lame_encode_buffer_interleaved(pgf, start_padd, 48, m_outFrameBuf, OUT_BUFFER_SIZE);
else
out_bytes = lame_encode_buffer(pgf, start_padd, start_padd, 48, m_outFrameBuf, OUT_BUFFER_SIZE);
if (out_bytes > 0)
m_outOffset += out_bytes;
free(start_padd);
}
return S_OK;
}
return E_FAIL;
}
return S_OK;
}
/*------------------------------------------------------------------------------
* Open an encoding session
*----------------------------------------------------------------------------*/
bool
LameLibEncoder :: open ( void )
throw ( Exception )
{
if ( isOpen() ) {
close();
}
lameGlobalFlags = lame_init();
// ugly lame returns -1 in a pointer on allocation errors
if ( !lameGlobalFlags || ((int)lameGlobalFlags) == -1 ) {
throw Exception( __FILE__, __LINE__,
"lame lib init error",
(int) lameGlobalFlags);
}
if ( 0 > lame_set_num_channels( lameGlobalFlags, getInChannel()) ) {
throw Exception( __FILE__, __LINE__,
"lame lib setting channels error",
getInChannel() );
}
if ( 0 > lame_set_mode( lameGlobalFlags,
getOutChannel() == 1 ? MONO : JOINT_STEREO) ) {
throw Exception( __FILE__, __LINE__,
"lame lib setting mode error",
JOINT_STEREO );
}
reportEvent( 5, "set lame mode", lame_get_mode( lameGlobalFlags));
reportEvent( 5,
"set lame channels",
lame_get_num_channels( lameGlobalFlags));
if ( 0 > lame_set_in_samplerate( lameGlobalFlags, getInSampleRate()) ) {
throw Exception( __FILE__, __LINE__,
"lame lib setting input sample rate error",
getInSampleRate() );
}
reportEvent( 5,
"set lame in sample rate",
lame_get_in_samplerate( lameGlobalFlags));
if ( 0 > lame_set_out_samplerate( lameGlobalFlags, getOutSampleRate()) ) {
throw Exception( __FILE__, __LINE__,
"lame lib setting output sample rate error",
getOutSampleRate() );
}
reportEvent( 5,
"set lame out sample rate",
lame_get_out_samplerate( lameGlobalFlags));
switch ( getOutBitrateMode() ) {
case cbr: {
if ( 0 > lame_set_brate( lameGlobalFlags, getOutBitrate()) ) {
throw Exception( __FILE__, __LINE__,
"lame lib setting output bit rate error",
getOutBitrate() );
}
reportEvent( 5,
"set lame bit rate",
lame_get_brate( lameGlobalFlags));
double d = (1.0 - getOutQuality()) * 10.0;
int q = int (d + 0.499999);
if ( 0 > lame_set_quality( lameGlobalFlags, q) ) {
throw Exception( __FILE__, __LINE__,
"lame lib setting quality error", q);
}
reportEvent( 5,
"set lame quality",
lame_get_quality( lameGlobalFlags));
} break;
case abr:
if ( 0 > lame_set_VBR( lameGlobalFlags,vbr_abr)) {
throw Exception( __FILE__, __LINE__,
"lame lib setting abr error", vbr_abr);
}
reportEvent( 5,
"set lame abr bitrate",
lame_get_VBR( lameGlobalFlags));
if ( 0 > lame_set_VBR_mean_bitrate_kbps( lameGlobalFlags,
getOutBitrate())) {
throw Exception( __FILE__, __LINE__,
"lame lib setting abr mean bitrate error",
getOutBitrate());
}
reportEvent( 5,
"set lame abr mean bitrate",
lame_get_VBR_mean_bitrate_kbps( lameGlobalFlags));
break;
case vbr: {
if ( 0 > lame_set_VBR( lameGlobalFlags, vbr_mtrh)) {
throw Exception( __FILE__, __LINE__,
"lame lib setting vbr error", vbr_mtrh );
}
reportEvent( 5,
"set lame vbr bitrate",
lame_get_VBR( lameGlobalFlags));
double d = (1.0 - getOutQuality()) * 10.0;
int q = int (d + 0.499999);
if ( 0 > lame_set_VBR_q( lameGlobalFlags, q) ) {
throw Exception( __FILE__, __LINE__,
"lame lib setting vbr quality error", q);
}
reportEvent( 5,
"set lame vbr quality",
lame_get_VBR_q( lameGlobalFlags));
} break;
}
if ( 0 > lame_set_lowpassfreq( lameGlobalFlags, lowpass) ) {
throw Exception( __FILE__, __LINE__,
"lame lib setting lowpass frequency error",
lowpass );
}
reportEvent( 5,
"set lame lowpass frequency",
lame_get_lowpassfreq( lameGlobalFlags));
if ( 0 > lame_set_highpassfreq( lameGlobalFlags, highpass) ) {
throw Exception( __FILE__, __LINE__,
"lame lib setting highpass frequency error",
lowpass );
}
reportEvent( 5,
"set lame highpass frequency",
lame_get_highpassfreq( lameGlobalFlags));
// not configurable lame settings
if ( 0 > lame_set_exp_nspsytune( lameGlobalFlags, 1) ) {
throw Exception( __FILE__, __LINE__,
"lame lib setting psycho acoustic model error");
}
reportEvent( 5,
"set lame psycho acoustic model",
lame_get_exp_nspsytune( lameGlobalFlags));
if ( 0 > lame_set_error_protection( lameGlobalFlags, 1) ) {
throw Exception( __FILE__, __LINE__,
"lame lib setting error protection error",
1 );
}
reportEvent( 5,
"set lame error protection",
lame_get_error_protection( lameGlobalFlags));
// let lame init its own params based on our settings
if ( 0 > lame_init_params( lameGlobalFlags) ) {
throw Exception( __FILE__, __LINE__,
"lame lib initializing params error" );
}
lame_print_config( lameGlobalFlags);
// open the underlying sink
if ( !sink->open() ) {
throw Exception( __FILE__, __LINE__,
"lame lib opening underlying sink error");
}
return true;
}
bool ACMStream::open(const AEncodeProperties & the_Properties)
{
bool bResult = false;
// Init the MP3 Stream
// Init the global flags structure
gfp = lame_init();
// Set input sample frequency
lame_set_in_samplerate( gfp, my_SamplesPerSec );
// Set output sample frequency
lame_set_out_samplerate( gfp, my_OutBytesPerSec );
lame_set_num_channels( gfp, my_Channels );
if (my_Channels == 1)
lame_set_mode( gfp, MONO );
else
lame_set_mode( gfp, (MPEG_mode_e)the_Properties.GetChannelModeValue()) ; /// \todo Get the mode from the default configuration
// lame_set_VBR( gfp, vbr_off ); /// \note VBR not supported for the moment
lame_set_VBR( gfp, my_VBRMode ); /// \note VBR not supported for the moment
if (my_VBRMode == vbr_abr)
{
lame_set_VBR_q( gfp, 1 );
lame_set_VBR_mean_bitrate_kbps( gfp, (my_AvgBytesPerSec * 8 + 500) / 1000 );
if (24000 > lame_get_in_samplerate( gfp ))
{
// For MPEG-II
lame_set_VBR_min_bitrate_kbps( gfp, 8);
lame_set_VBR_max_bitrate_kbps( gfp, 160);
}
else
{
// For MPEG-I
lame_set_VBR_min_bitrate_kbps( gfp, 32);
lame_set_VBR_max_bitrate_kbps( gfp, 320);
}
}
// Set bitrate
lame_set_brate( gfp, my_AvgBytesPerSec * 8 / 1000 );
/// \todo Get the mode from the default configuration
// Set copyright flag?
lame_set_copyright( gfp, the_Properties.GetCopyrightMode()?1:0 );
// Do we have to tag it as non original
lame_set_original( gfp, the_Properties.GetOriginalMode()?1:0 );
// Add CRC?
lame_set_error_protection( gfp, the_Properties.GetCRCMode()?1:0 );
// Set private bit?
lame_set_extension( gfp, the_Properties.GetPrivateMode()?1:0 );
// INFO tag support not possible in ACM - it requires rewinding
// output stream to the beginning after encoding is finished.
lame_set_bWriteVbrTag( gfp, 0 );
if (0 == lame_init_params( gfp ))
{
//LAME encoding call will accept any number of samples.
if ( 0 == lame_get_version( gfp ) )
{
// For MPEG-II, only 576 samples per frame per channel
my_SamplesPerBlock = 576 * lame_get_num_channels( gfp );
}
else
{
// For MPEG-I, 1152 samples per frame per channel
my_SamplesPerBlock = 1152 * lame_get_num_channels( gfp );
}
}
my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "version =%d",lame_get_version( gfp ) );
my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "Layer =3");
switch ( lame_get_mode( gfp ) )
{
case STEREO: my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "mode =Stereo" ); break;
case JOINT_STEREO: my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "mode =Joint-Stereo" ); break;
case DUAL_CHANNEL: my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "mode =Forced Stereo" ); break;
case MONO: my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "mode =Mono" ); break;
case NOT_SET: /* FALLTROUGH */
default: my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "mode =Error (unknown)" ); break;
}
my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "sampling frequency =%.1f kHz", lame_get_in_samplerate( gfp ) /1000.0 );
my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "bitrate =%d kbps", lame_get_brate( gfp ) );
my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "Vbr Min bitrate =%d kbps", lame_get_VBR_min_bitrate_kbps( gfp ) );
my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "Vbr Max bitrate =%d kbps", lame_get_VBR_max_bitrate_kbps( gfp ) );
my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "Quality Setting =%d", lame_get_quality( gfp ) );
my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "Low pass frequency =%d", lame_get_lowpassfreq( gfp ) );
my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "Low pass width =%d", lame_get_lowpasswidth( gfp ) );
my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "High pass frequency =%d", lame_get_highpassfreq( gfp ) );
my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "High pass width =%d", lame_get_highpasswidth( gfp ) );
my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "No Short Blocks =%d", lame_get_no_short_blocks( gfp ) );
my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "de-emphasis =%d", lame_get_emphasis( gfp ) );
my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "private flag =%d", lame_get_extension( gfp ) );
my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "copyright flag =%d", lame_get_copyright( gfp ) );
my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "original flag =%d", lame_get_original( gfp ) );
my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "CRC =%s", lame_get_error_protection( gfp ) ? "on" : "off" );
my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "Fast mode =%s", ( lame_get_quality( gfp ) )? "enabled" : "disabled" );
my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "Force mid/side stereo =%s", ( lame_get_force_ms( gfp ) )?"enabled":"disabled" );
my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "Padding Type =%d", lame_get_padding_type( gfp ) );
my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "Disable Resorvoir =%d", lame_get_disable_reservoir( gfp ) );
my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "VBR =%s, VBR_q =%d, VBR method =",
( lame_get_VBR( gfp ) !=vbr_off ) ? "enabled": "disabled",
lame_get_VBR_q( gfp ) );
switch ( lame_get_VBR( gfp ) )
{
case vbr_off: my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "vbr_off" ); break;
case vbr_mt : my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "vbr_mt" ); break;
case vbr_rh : my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "vbr_rh" ); break;
case vbr_mtrh: my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "vbr_mtrh" ); break;
case vbr_abr:
my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "vbr_abr (average bitrate %d kbps)", lame_get_VBR_mean_bitrate_kbps( gfp ) );
break;
default:
my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "error, unknown VBR setting");
break;
}
my_debug->OutPut(DEBUG_LEVEL_FUNC_DEBUG, "Write VBR Header =%s\n", ( lame_get_bWriteVbrTag( gfp ) ) ?"Yes":"No");
#ifdef FROM_DLL
beConfig.format.LHV1.dwReSampleRate = my_OutBytesPerSec; // force the user resampling
#endif // FROM_DLL
bResult = true;
return bResult;
}
//core function to encide WAV to MP3, relying on LAME library
void encode(char* wavFilePath, char* mp3FilePath) {
FILE* wavFile = fopen(wavFilePath, "rb");
FILE* mp3File = fopen(mp3FilePath, "wb+");
int readPCMSampleCount;
short int pcmBuffer[PCM_BUF_SIZE];
unsigned char mp3Buffer[MP3_BUF_SIZE];
unsigned short channel;
unsigned long sampleRate;
unsigned short blockAlign;
lame_t lame = lame_init();
if((wavFile == NULL) || (mp3File == NULL)) {
printErrorMessage(FILE_IO_EXCEPTION);
return;
}
if(lame == NULL) {
printErrorMessage(LAME_API_ERROR);
return;
}
//Set number of channels
else if(fseek(wavFile, 22, SEEK_SET) != 0) {
printErrorMessage(FILE_IO_EXCEPTION);
return;
}
else if(fread(&channel, 2, 1, wavFile) < 1) {
printErrorMessage(FILE_IO_EXCEPTION);
return;
}
else {
lame_set_num_channels(lame, channel);
lame_set_mode(lame, (channel == 1) ? MONO : JOINT_STEREO);
}
//Set number of sample rate
if(fseek(wavFile, 24, SEEK_SET) != 0) {
printErrorMessage(FILE_IO_EXCEPTION);
return;
}
else if(fread(&sampleRate, 4, 1, wavFile) < 1) {
printErrorMessage(FILE_IO_EXCEPTION);
return;
}
else {
lame_set_in_samplerate(lame, sampleRate);
lame_set_out_samplerate(lame, sampleRate);
}
//Set block align (byte/sample)
if(fseek(wavFile, 32, SEEK_SET) != 0) {
printErrorMessage(FILE_IO_EXCEPTION);
return;
}
else if(fread(&blockAlign, 4, 1, wavFile) < 1) {
printErrorMessage(FILE_IO_EXCEPTION);
return;
}
//Look for data chank in the WAV file
if(fseek(wavFile, 36, SEEK_SET) != 0) {
printErrorMessage(FILE_IO_EXCEPTION);
return;
}
else {
char data[5];
data[4] = '\0';
while(fread(data, 4, 1, wavFile) == 1) {
if(strcmp(data, "data") != 0) {
//Search data chank by 1 byte
fseek(wavFile, -3, SEEK_CUR);
continue;
}
else if(fseek(wavFile, 4, SEEK_CUR)) {
//data chank was found, then skip next 4 byte(indicating data size) to proceed
printErrorMessage(FILE_IO_EXCEPTION);
return;
}
else {
//Now we are pointing the head of the PCM data, let's proceed
break;
}
}
//If data chank cannot be detected
if(feof(wavFile)) {
printErrorMessage(NOT_WAV_HEADER);
return;
}
}
//Encoding conficuration with "good" level quality
lame_set_quality(lame, 5);
lame_set_VBR(lame, vbr_default);
lame_set_VBR_q(lame, 5);
if(lame_init_params(lame) == -1) {
printErrorMessage(LAME_API_ERROR);
return;
}
//Perfoem encoding
do {
int encodedSampleCount;
readPCMSampleCount = fread(pcmBuffer, blockAlign, PCM_BUF_SIZE / blockAlign, wavFile);
if(readPCMSampleCount != 0) {
if(channel == 1) { //For monoral case
short int pcmBufferRight[PCM_BUF_SIZE];
short int pcmBufferLeft[PCM_BUF_SIZE];
int i;
for(i = 0; i < PCM_BUF_SIZE; i++) {
pcmBufferRight[i] = pcmBuffer[i];
pcmBufferLeft[i] = pcmBuffer[i];
}
encodedSampleCount = lame_encode_buffer(lame, pcmBufferLeft, pcmBufferRight, readPCMSampleCount, mp3Buffer, MP3_BUF_SIZE);
}
else { //For stereo case
encodedSampleCount = lame_encode_buffer_interleaved(lame, pcmBuffer, readPCMSampleCount, mp3Buffer, MP3_BUF_SIZE);
}
}
else {
encodedSampleCount = lame_encode_flush(lame, mp3Buffer, MP3_BUF_SIZE);
}
if(encodedSampleCount < 0) {
printErrorMessage(LAME_API_ERROR);
}
else {
fwrite(mp3Buffer, encodedSampleCount, 1, mp3File);
}
} while(readPCMSampleCount != 0);
lame_close(lame);
fclose(wavFile);
fclose(mp3File);
}
int
lame_set_preset_expopts( lame_global_flags* gfp, int preset_expopts )
{
lame_internal_flags *gfc = gfp->internal_flags;
gfc->presetTune.use = 1;
/* default = 0 (disabled) */
gfp->preset_expopts = preset_expopts;
switch (preset_expopts)
{
case 1:
lame_set_exp_nspsytune(gfp, lame_get_exp_nspsytune(gfp) | 1);
lame_set_experimentalX(gfp, 3);
lame_set_exp_nspsytune(gfp, lame_get_exp_nspsytune(gfp) | 2); // safejoint
lame_set_ATHtype(gfp, 2);
gfc->presetTune.attackthre = 35;
gfc->presetTune.attackthre_s = 150;
gfc->presetTune.ms_maskadjust = .5;
gfc->presetTune.quantcomp_type_s = 3;
gfc->presetTune.quantcomp_alt_type = 3;
gfc->presetTune.athadjust_switch_level = 2; // Always switch
break;
case 2:
if (gfp->VBR == vbr_mtrh) {
lame_set_experimentalX(gfp, 2);
gfc->presetTune.quantcomp_adjust_mtrh = 9;
gfc->presetTune.quantcomp_type_s = 4;
gfc->presetTune.quantcomp_alt_type = 0;
gfc->presetTune.athadjust_safe_noiseshaping_thre = 0.0;
gfc->presetTune.athadjust_safe_athaasensitivity = 8.0;
}
else {
lame_set_experimentalX(gfp, 3);
gfc->presetTune.quantcomp_adjust_rh_tot = 600;
gfc->presetTune.quantcomp_adjust_rh_max = 60;
gfc->presetTune.quantcomp_type_s = 3;
gfc->presetTune.quantcomp_alt_type = 1;
}
lame_set_exp_nspsytune(gfp, lame_get_exp_nspsytune(gfp) | 1);
lame_set_experimentalZ(gfp, 1);
lame_set_VBR_q(gfp, 2);
lame_set_exp_nspsytune(gfp, lame_get_exp_nspsytune(gfp) | 2); // safejoint
lame_set_ATHtype(gfp, 2);
// modify sfb21 by 3 dB plus ns-treble=0
lame_set_exp_nspsytune(gfp, lame_get_exp_nspsytune(gfp) | (12 << 20));
gfc->presetTune.attackthre = 35;
gfc->presetTune.attackthre_s = 150;
gfc->presetTune.ms_maskadjust = .5;
gfc->presetTune.athadjust_switch_level = 1;
gfc->presetTune.athadjust_msfix = 2.13;
break;
case 3:
if (gfp->VBR == vbr_mtrh) {
gfc->presetTune.quantcomp_type_s = 4;
gfc->presetTune.quantcomp_adjust_mtrh = 9;
gfc->presetTune.quantcomp_alt_type = 0;
(void) lame_set_ATHlower( gfp, -2 );
gfc->presetTune.athadjust_safe_noiseshaping_thre = 0.0;
gfc->presetTune.athadjust_safe_athaasensitivity = 8.0;
}
else {
gfc->presetTune.quantcomp_type_s = 3;
gfc->presetTune.quantcomp_adjust_rh_tot = 600;
gfc->presetTune.quantcomp_adjust_rh_max = 60;
(void) lame_set_ATHlower( gfp, -1 );
}
lame_set_exp_nspsytune(gfp, lame_get_exp_nspsytune(gfp) | 1);
lame_set_experimentalZ(gfp, 1);
lame_set_experimentalX(gfp, 1);
lame_set_VBR_q(gfp, 2);
lame_set_exp_nspsytune(gfp, lame_get_exp_nspsytune(gfp) | 2); // safejoint
(void) lame_set_msfix( gfp, 2.13 );
lame_set_ATHtype(gfp, 4);
// modify sfb21 by 3.75 dB plus ns-treble=0
lame_set_exp_nspsytune(gfp, lame_get_exp_nspsytune(gfp) | (15 << 20));
gfc->presetTune.attackthre = 35;
gfc->presetTune.attackthre_s = 150;
gfc->presetTune.ms_maskadjust = .5;
gfc->presetTune.athadjust_switch_level = 1;
break;
}
return 0;
}
static gint mp3_open(void)
{
int imp3;
gfp = lame_init();
if (gfp == NULL)
return 0;
/* setup id3 data */
id3tag_init(gfp);
if (tuple) {
/* XXX write UTF-8 even though libmp3lame does id3v2.3. --yaz */
lameid3.track_name = tuple_get_str (tuple, FIELD_TITLE, NULL);
id3tag_set_title(gfp, lameid3.track_name);
lameid3.performer = tuple_get_str (tuple, FIELD_ARTIST, NULL);
id3tag_set_artist(gfp, lameid3.performer);
lameid3.album_name = tuple_get_str (tuple, FIELD_ALBUM, NULL);
id3tag_set_album(gfp, lameid3.album_name);
lameid3.genre = tuple_get_str (tuple, FIELD_GENRE, NULL);
id3tag_set_genre(gfp, lameid3.genre);
lameid3.year = str_printf ("%d", tuple_get_int (tuple, FIELD_YEAR, NULL));
id3tag_set_year(gfp, lameid3.year);
lameid3.track_number = str_printf ("%d", tuple_get_int (tuple, FIELD_TRACK_NUMBER, NULL));
id3tag_set_track(gfp, lameid3.track_number);
if (force_v2_val) {
id3tag_add_v2(gfp);
}
if (only_v1_val) {
id3tag_v1_only(gfp);
}
if (only_v2_val) {
id3tag_v2_only(gfp);
}
}
/* input stream description */
lame_set_in_samplerate(gfp, input.frequency);
lame_set_num_channels(gfp, input.channels);
/* Maybe implement this? */
/* lame_set_scale(lame_global_flags *, float); */
lame_set_out_samplerate(gfp, out_samplerate_val);
/* general control parameters */
lame_set_bWriteVbrTag(gfp, toggle_xing_val);
lame_set_quality(gfp, algo_quality_val);
if (audio_mode_val != 4) {
AUDDBG("set mode to %d\n", audio_mode_val);
lame_set_mode(gfp, audio_mode_val);
}
lame_set_errorf(gfp, lame_debugf);
lame_set_debugf(gfp, lame_debugf);
lame_set_msgf(gfp, lame_debugf);
if (enc_toggle_val == 0 && vbr_on == 0)
lame_set_brate(gfp, bitrate_val);
else if (vbr_on == 0)
lame_set_compression_ratio(gfp, compression_val);
/* frame params */
lame_set_copyright(gfp, mark_copyright_val);
lame_set_original(gfp, mark_original_val);
lame_set_error_protection(gfp, error_protect_val);
lame_set_strict_ISO(gfp, enforce_iso_val);
if (vbr_on != 0) {
if (vbr_type == 0)
lame_set_VBR(gfp, 2);
else
lame_set_VBR(gfp, 3);
lame_set_VBR_q(gfp, vbr_quality_val);
lame_set_VBR_mean_bitrate_kbps(gfp, abr_val);
lame_set_VBR_min_bitrate_kbps(gfp, vbr_min_val);
lame_set_VBR_max_bitrate_kbps(gfp, vbr_max_val);
lame_set_VBR_hard_min(gfp, enforce_min_val);
}
/* not to write id3 tag automatically. */
lame_set_write_id3tag_automatic(gfp, 0);
if (lame_init_params(gfp) == -1)
return 0;
/* write id3v2 header */
imp3 = lame_get_id3v2_tag(gfp, encbuffer, sizeof(encbuffer));
if (imp3 > 0) {
write_output(encbuffer, imp3);
id3v2_size = imp3;
}
else {
id3v2_size = 0;
}
write_buffer = NULL;
write_buffer_size = 0;
return 1;
}
