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1 #include "stdafx.h"
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2 #include "dsp_sample.h"
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3
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4 #ifdef _WIN32
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5 #include <helpers/DarkMode.h>
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6 #include "resource.h"
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7
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8 static void RunDSPConfigPopup(const dsp_preset & p_data,HWND p_parent,dsp_preset_edit_callback & p_callback);
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9 #endif
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10
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11 #ifdef __APPLE__
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12 // fooSampleDSPView.mm
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13 service_ptr ConfigureSampleDSP( fb2k::hwnd_t parent, dsp_preset_edit_callback_v2::ptr callback );
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14 #endif
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15
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16 class dsp_sample : public dsp_impl_base
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17 {
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18 public:
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19 dsp_sample(dsp_preset const & in) : m_gain(parse_preset(in)) {
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20 }
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21
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22 static GUID g_get_guid() {
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23 return dsp_sample_common::guid;
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24 }
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25
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26 static void g_get_name(pfc::string_base & p_out) { p_out = "Sample DSP";}
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27
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28 bool on_chunk(audio_chunk * chunk,abort_callback &) {
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29 // Perform any operations on the chunk here.
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30 // The most simple DSPs can just alter the chunk in-place here and skip the following functions.
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31
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32
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33 // trivial DSP code: apply our gain to the audio data.
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34 chunk->scale( (audio_sample)audio_math::gain_to_scale( m_gain ) );
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35
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36 // To retrieve the currently processed track, use get_cur_file().
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37 // Warning: the track is not always known - it's up to the calling component to provide this data and in some situations we'll be working with data that doesn't originate from an audio file.
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38 // If you rely on get_cur_file(), you should change need_track_change_mark() to return true to get accurate information when advancing between tracks.
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39
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40 return true; //Return true to keep the chunk or false to drop it from the chain.
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41 }
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42
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43 void on_endofplayback(abort_callback &) {
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44 // The end of playlist has been reached, we've already received the last decoded audio chunk.
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45 // We need to finish any pending processing and output any buffered data through insert_chunk().
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46 }
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47 void on_endoftrack(abort_callback &) {
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48 // Should do nothing except for special cases where your DSP performs special operations when changing tracks.
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49 // If this function does anything, you must change need_track_change_mark() to return true.
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50 // If you have pending audio data that you wish to output, you can use insert_chunk() to do so.
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51 }
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52
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53 void flush() {
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54 // If you have any audio data buffered, you should drop it immediately and reset the DSP to a freshly initialized state.
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55 // Called after a seek etc.
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56 }
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57
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58 double get_latency() {
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59 // If the DSP buffers some amount of audio data, it should return the duration of buffered data (in seconds) here.
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60 return 0;
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61 }
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62
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63 bool need_track_change_mark() {
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64 // Return true if you need on_endoftrack() or need to accurately know which track we're currently processing
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65 // WARNING: If you return true, the DSP manager will fire on_endofplayback() at DSPs that are before us in the chain on track change to ensure that we get an accurate mark, so use it only when needed.
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66 return false;
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67 }
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68 static bool g_get_default_preset(dsp_preset & p_out) {
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69 make_preset(0, p_out);
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70 return true;
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71 }
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72 #ifdef _WIN32
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73 static void g_show_config_popup(const dsp_preset & p_data,HWND p_parent,dsp_preset_edit_callback & p_callback) {
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74 ::RunDSPConfigPopup(p_data, p_parent, p_callback);
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75 }
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76 #endif // _WIN32
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77 #ifdef __APPLE__
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78 static service_ptr g_show_config_popup( fb2k::hwnd_t parent, dsp_preset_edit_callback_v2::ptr callback ) {
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79 return ConfigureSampleDSP( parent, callback );
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80 }
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81 #endif // __APPLE__
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82 static bool g_have_config_popup() {return true;}
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83 private:
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84 float m_gain;
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85 };
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86
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87 // Use dsp_factory_nopreset_t<> instead of dsp_factory_t<> if your DSP does not provide preset/configuration functionality.
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88 static dsp_factory_t<dsp_sample> g_dsp_sample_factory;
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89
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90 #ifdef _WIN32
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91
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92 class CMyDSPPopup : public CDialogImpl<CMyDSPPopup> {
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93 public:
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94 CMyDSPPopup(const dsp_preset & initData, dsp_preset_edit_callback & callback) : m_initData(initData), m_callback(callback) {}
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95
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96 enum { IDD = IDD_DSP };
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97
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98 enum {
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99 RangeMin = -20,
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100 RangeMax = 20,
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101
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102 RangeTotal = RangeMax - RangeMin
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103 };
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104
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105 BEGIN_MSG_MAP_EX(CMyDSPPopup)
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106 MSG_WM_INITDIALOG(OnInitDialog)
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107 COMMAND_HANDLER_EX(IDOK, BN_CLICKED, OnButton)
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108 COMMAND_HANDLER_EX(IDCANCEL, BN_CLICKED, OnButton)
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109 MSG_WM_HSCROLL(OnHScroll)
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110 END_MSG_MAP()
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111
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112 private:
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113
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114 BOOL OnInitDialog(CWindow, LPARAM) {
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115 m_dark.AddDialogWithControls(m_hWnd);
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116 m_slider = GetDlgItem(IDC_SLIDER);
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117 m_slider.SetRange(0, RangeTotal);
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118
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119 {
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120 float val = parse_preset(m_initData);
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121 m_slider.SetPos( pfc::clip_t<t_int32>( pfc::rint32(val), RangeMin, RangeMax ) - RangeMin );
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122 RefreshLabel(val);
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123 }
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124 return TRUE;
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125 }
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126
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127 void OnButton(UINT, int id, CWindow) {
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128 EndDialog(id);
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129 }
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130
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131 void OnHScroll(UINT nSBCode, UINT nPos, CScrollBar pScrollBar) {
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132 float val;
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133 val = (float) ( m_slider.GetPos() + RangeMin );
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134
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135 {
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136 dsp_preset_impl preset;
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137 make_preset(val, preset);
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138 m_callback.on_preset_changed(preset);
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139 }
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140 RefreshLabel(val);
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141 }
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142
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143 void RefreshLabel(float val) {
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144 pfc::string_formatter msg; msg << pfc::format_float(val) << " dB";
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145 ::uSetDlgItemText(*this, IDC_SLIDER_LABEL, msg);
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146 }
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147
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148 const dsp_preset & m_initData; // modal dialog so we can reference this caller-owned object.
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149 dsp_preset_edit_callback & m_callback;
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150
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151 CTrackBarCtrl m_slider;
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152 fb2k::CDarkModeHooks m_dark;
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153 };
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154
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155 static void RunDSPConfigPopup(const dsp_preset & p_data,HWND p_parent,dsp_preset_edit_callback & p_callback) {
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156 CMyDSPPopup popup(p_data, p_callback);
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157 if (popup.DoModal(p_parent) != IDOK) {
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158 // If the dialog exited with something else than IDOK,k
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159 // tell host that the editing has been cancelled by sending it old preset data that we got initialized with
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160 p_callback.on_preset_changed(p_data);
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161 }
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162 }
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163 #endif
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