/*------------------------------------------------------------------------------ * 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, getInChannel() == 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)); 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)); if ( lowpass ) { 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 ( highpass ) { 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_quality( lameGlobalFlags, 2) ) { throw Exception( __FILE__, __LINE__, "lame lib setting quality error", 2 ); } reportEvent( 5, "set lame quality", lame_get_quality( lameGlobalFlags)); 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; }
/*------------------------------------------------------------------------------ * 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; }