static int EqzInit( filter_t *p_filter, int i_rate ) { filter_sys_t *p_sys = p_filter->p_sys; eqz_config_t cfg; int i, ch; vlc_value_t val1, val2, val3; vlc_object_t *p_aout = p_filter->p_parent; int i_ret = VLC_ENOMEM; bool b_vlcFreqs = var_InheritBool( p_aout, "equalizer-vlcfreqs" ); EqzCoeffs( i_rate, 1.0f, b_vlcFreqs, &cfg ); /* Create the static filter config */ p_sys->i_band = cfg.i_band; p_sys->f_alpha = malloc( p_sys->i_band * sizeof(float) ); p_sys->f_beta = malloc( p_sys->i_band * sizeof(float) ); p_sys->f_gamma = malloc( p_sys->i_band * sizeof(float) ); if( !p_sys->f_alpha || !p_sys->f_beta || !p_sys->f_gamma ) goto error; for( i = 0; i < p_sys->i_band; i++ ) { p_sys->f_alpha[i] = cfg.band[i].f_alpha; p_sys->f_beta[i] = cfg.band[i].f_beta; p_sys->f_gamma[i] = cfg.band[i].f_gamma; } /* Filter dyn config */ p_sys->b_2eqz = false; p_sys->f_gamp = 1.0f; p_sys->f_amp = malloc( p_sys->i_band * sizeof(float) ); if( !p_sys->f_amp ) goto error; for( i = 0; i < p_sys->i_band; i++ ) { p_sys->f_amp[i] = 0.0f; } /* Filter state */ for( ch = 0; ch < 32; ch++ ) { p_sys->x[ch][0] = p_sys->x[ch][1] = p_sys->x2[ch][0] = p_sys->x2[ch][1] = 0.0f; for( i = 0; i < p_sys->i_band; i++ ) { p_sys->y[ch][i][0] = p_sys->y[ch][i][1] = p_sys->y2[ch][i][0] = p_sys->y2[ch][i][1] = 0.0f; } } p_sys->psz_newbands = NULL; var_Create( p_aout, "equalizer-bands", VLC_VAR_STRING | VLC_VAR_DOINHERIT ); var_Create( p_aout, "equalizer-preset", VLC_VAR_STRING | VLC_VAR_DOINHERIT ); p_sys->b_2eqz = var_CreateGetBool( p_aout, "equalizer-2pass" ); var_Create( p_aout, "equalizer-preamp", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT ); /* Get initial values */ var_Get( p_aout, "equalizer-preset", &val1 ); var_Get( p_aout, "equalizer-bands", &val2 ); var_Get( p_aout, "equalizer-preamp", &val3 ); p_sys->b_first = true; PresetCallback( VLC_OBJECT( p_aout ), NULL, val1, val1, p_sys ); BandsCallback( VLC_OBJECT( p_aout ), NULL, val2, val2, p_sys ); PreampCallback( VLC_OBJECT( p_aout ), NULL, val3, val3, p_sys ); p_sys->b_first = false; free( val1.psz_string ); /* Exit if we have no preset and no bands value */ if (p_sys->psz_newbands == NULL && (!val2.psz_string || !*val2.psz_string)) { msg_Err(p_filter, "No preset selected"); free( val2.psz_string ); free( p_sys->f_amp ); i_ret = VLC_EGENERIC; goto error; } /* Register preset bands (for intf) if : */ /* We have no bands info --> the preset info must be given to the intf */ /* or The bands info matches the preset */ if( ( p_sys->psz_newbands && *(val2.psz_string) && strstr( p_sys->psz_newbands, val2.psz_string ) ) || !*val2.psz_string ) { var_SetString( p_aout, "equalizer-bands", p_sys->psz_newbands ); if( p_sys->f_newpreamp == p_sys->f_gamp ) var_SetFloat( p_aout, "equalizer-preamp", p_sys->f_newpreamp ); } free( val2.psz_string ); /* Add our own callbacks */ var_AddCallback( p_aout, "equalizer-preset", PresetCallback, p_sys ); var_AddCallback( p_aout, "equalizer-bands", BandsCallback, p_sys ); var_AddCallback( p_aout, "equalizer-preamp", PreampCallback, p_sys ); var_AddCallback( p_aout, "equalizer-2pass", TwoPassCallback, p_sys ); msg_Dbg( p_filter, "equalizer loaded for %d Hz with %d bands %d pass", i_rate, p_sys->i_band, p_sys->b_2eqz ? 2 : 1 ); for( i = 0; i < p_sys->i_band; i++ ) { msg_Dbg( p_filter, " %.2f Hz -> factor:%f alpha:%f beta:%f gamma:%f", cfg.band[i].f_frequency, p_sys->f_amp[i], p_sys->f_alpha[i], p_sys->f_beta[i], p_sys->f_gamma[i]); } return VLC_SUCCESS; error: free( p_sys->f_alpha ); free( p_sys->f_beta ); free( p_sys->f_gamma ); return i_ret; }
static int EqzInit( aout_filter_t *p_filter, int i_rate ) { aout_filter_sys_t *p_sys = p_filter->p_sys; const eqz_config_t *p_cfg; int i, ch; vlc_value_t val1, val2, val3; aout_instance_t *p_aout = (aout_instance_t *)p_filter->p_parent; /* Select the config */ if( i_rate == 48000 ) { p_cfg = &eqz_config_48000_10b; } else if( i_rate == 44100 ) { p_cfg = &eqz_config_44100_10b; } else { /* TODO compute the coeffs on the fly */ msg_Err( p_filter, "unsupported rate" ); return VLC_EGENERIC; } /* Create the static filter config */ p_sys->i_band = p_cfg->i_band; p_sys->f_alpha = malloc( p_sys->i_band * sizeof(float) ); p_sys->f_beta = malloc( p_sys->i_band * sizeof(float) ); p_sys->f_gamma = malloc( p_sys->i_band * sizeof(float) ); for( i = 0; i < p_sys->i_band; i++ ) { p_sys->f_alpha[i] = p_cfg->band[i].f_alpha; p_sys->f_beta[i] = p_cfg->band[i].f_beta; p_sys->f_gamma[i] = p_cfg->band[i].f_gamma; } /* Filter dyn config */ p_sys->b_2eqz = VLC_FALSE; p_sys->f_gamp = 1.0; p_sys->f_amp = malloc( p_sys->i_band * sizeof(float) ); for( i = 0; i < p_sys->i_band; i++ ) { p_sys->f_amp[i] = 0.0; } /* Filter state */ for( ch = 0; ch < 32; ch++ ) { p_sys->x[ch][0] = p_sys->x[ch][1] = p_sys->x2[ch][0] = p_sys->x2[ch][1] = 0.0; for( i = 0; i < p_sys->i_band; i++ ) { p_sys->y[ch][i][0] = p_sys->y[ch][i][1] = p_sys->y2[ch][i][0] = p_sys->y2[ch][i][1] = 0.0; } } var_CreateGetString( p_aout,"equalizer-bands" ); var_CreateGetString( p_aout, "equalizer-preset" ); p_sys->b_2eqz = var_CreateGetBool( p_aout, "equalizer-2pass" ); var_CreateGetFloat( p_aout, "equalizer-preamp" ); /* Get initial values */ var_Get( p_aout, "equalizer-preset", &val1 ); var_Get( p_aout, "equalizer-bands", &val2 ); var_Get( p_aout, "equalizer-preamp", &val3 ); p_sys->b_first = VLC_TRUE; PresetCallback( VLC_OBJECT( p_aout ), NULL, val1, val1, p_sys ); BandsCallback( VLC_OBJECT( p_aout ), NULL, val2, val2, p_sys ); PreampCallback( VLC_OBJECT( p_aout ), NULL, val3, val3, p_sys ); p_sys->b_first = VLC_FALSE; /* Register preset bands (for intf) if : */ /* We have no bands info --> the preset info must be given to the intf */ /* or The bands info matches the preset */ if (p_sys->psz_newbands == NULL) { msg_Err(p_filter, "No preset selected"); return (VLC_EGENERIC); } if( ( *(val2.psz_string) && strstr( p_sys->psz_newbands, val2.psz_string ) ) || !*val2.psz_string ) { var_SetString( p_aout, "equalizer-bands", p_sys->psz_newbands ); var_SetFloat( p_aout, "equalizer-preamp", p_sys->f_newpreamp ); } /* Add our own callbacks */ var_AddCallback( p_aout, "equalizer-preset", PresetCallback, p_sys ); var_AddCallback( p_aout, "equalizer-bands", BandsCallback, p_sys ); var_AddCallback( p_aout, "equalizer-preamp", PreampCallback, p_sys ); msg_Dbg( p_filter, "equalizer loaded for %d Hz with %d bands %d pass", i_rate, p_sys->i_band, p_sys->b_2eqz ? 2 : 1 ); for( i = 0; i < p_sys->i_band; i++ ) { msg_Dbg( p_filter, " %d Hz -> factor:%f alpha:%f beta:%f gamma:%f", (int)p_cfg->band[i].f_frequency, p_sys->f_amp[i], p_sys->f_alpha[i], p_sys->f_beta[i], p_sys->f_gamma[i]); } return VLC_SUCCESS; }