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https://github.com/vgmstream/vgmstream.git
synced 2025-02-17 11:18:31 +01:00
Improve channel downmixer
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bnnm
parent
35cd14fa04
commit
b4f007b6bd
@ -56,7 +56,7 @@ typedef struct {
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int loop_forever;
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int ignore_loop;
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int disable_subsongs;
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int downmix;
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int downmix_channels;
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} winamp_config;
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winamp_config config;
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@ -318,7 +318,7 @@ static void cfg_char_to_wchar(TCHAR *wdst, size_t wdstsize, const char *src) {
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#define DEFAULT_LOOP_FOREVER 0
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#define DEFAULT_IGNORE_LOOP 0
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#define DEFAULT_DISABLE_SUBSONGS 0
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#define DEFAULT_DOWNMIX 0
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#define DEFAULT_DOWNMIX_CHANNELS 0
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#define INI_ENTRY_FADE_SECONDS TEXT("fade_seconds")
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#define INI_ENTRY_FADE_DELAY_SECONDS TEXT("fade_delay")
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@ -327,7 +327,7 @@ static void cfg_char_to_wchar(TCHAR *wdst, size_t wdstsize, const char *src) {
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#define INI_ENTRY_LOOP_FOREVER TEXT("loop_forever")
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#define INI_ENTRY_IGNORE_LOOP TEXT("ignore_loop")
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#define INI_ENTRY_DISABLE_SUBSONGS TEXT("disable_subsongs")
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#define INI_ENTRY_DOWNMIX TEXT("downmix")
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#define INI_ENTRY_DOWNMIX_CHANNELS TEXT("downmix_channels")
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TCHAR *priority_strings[] = {
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TEXT("Idle"),
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@ -434,12 +434,13 @@ static void load_config() {
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// config.disable_subsongs = DEFAULT_DISABLE_SUBSONGS;
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//}
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config.downmix = GetPrivateProfileInt(CONFIG_APP_NAME,INI_ENTRY_DOWNMIX,DEFAULT_DOWNMIX,iniFile);
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//if (config.downmix < 0) { //unneeded?
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// sprintf(buf, TEXT("%d"),DEFAULT_DOWNMIX);
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// WritePrivateProfileString(CONFIG_APP_NAME,INI_ENTRY_DOWNMIX,buf,iniFile);
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// config.downmix = DEFAULT_DOWNMIX;
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//}
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config.downmix_channels = GetPrivateProfileInt(CONFIG_APP_NAME,INI_ENTRY_DOWNMIX_CHANNELS,DEFAULT_DOWNMIX_CHANNELS,iniFile);
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if (config.downmix_channels < 0) {
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cfg_sprintf(buf, TEXT("%d"),DEFAULT_DOWNMIX_CHANNELS);
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WritePrivateProfileString(CONFIG_APP_NAME,INI_ENTRY_DOWNMIX_CHANNELS,buf,iniFile);
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config.downmix_channels = DEFAULT_DOWNMIX_CHANNELS;
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}
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}
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/* config dialog handler */
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@ -487,8 +488,8 @@ INT_PTR CALLBACK configDlgProc(HWND hDlg, UINT uMsg, WPARAM wParam, LPARAM lPara
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if (config.disable_subsongs)
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CheckDlgButton(hDlg,IDC_DISABLE_SUBSONGS,BST_CHECKED);
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if (config.downmix)
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CheckDlgButton(hDlg,IDC_DOWNMIX,BST_CHECKED);
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cfg_sprintf(buf, TEXT("%d"),config.downmix_channels);
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SetDlgItemText(hDlg,IDC_DOWNMIX_CHANNELS,buf);
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break;
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@ -499,6 +500,7 @@ INT_PTR CALLBACK configDlgProc(HWND hDlg, UINT uMsg, WPARAM wParam, LPARAM lPara
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double temp_fade_seconds;
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double temp_fade_delay_seconds;
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double temp_loop_count;
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int temp_downmix_channels;
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int consumed, res;
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GetDlgItemText(hDlg,IDC_FADE_SECONDS,buf,buf_size);
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@ -531,6 +533,17 @@ INT_PTR CALLBACK configDlgProc(HWND hDlg, UINT uMsg, WPARAM wParam, LPARAM lPara
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break;
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}
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GetDlgItemText(hDlg,IDC_DOWNMIX_CHANNELS,buf,buf_size);
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res = cfg_sscanf(buf, TEXT("%d%n"),&temp_downmix_channels,&consumed);
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if (res < 1 || consumed != cfg_strlen(buf) || temp_downmix_channels < 0) {
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MessageBox(hDlg,
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TEXT("Invalid value for Downmix Channels\n")
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TEXT("Must be a number greater than or equal to zero"),
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TEXT("Error"),MB_OK|MB_ICONERROR);
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break;
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}
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GetINIFileName(iniFile);
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config.thread_priority = mypri;
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@ -561,9 +574,13 @@ INT_PTR CALLBACK configDlgProc(HWND hDlg, UINT uMsg, WPARAM wParam, LPARAM lPara
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cfg_sprintf(buf, TEXT("%d"),config.disable_subsongs);
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WritePrivateProfileString(CONFIG_APP_NAME,INI_ENTRY_DISABLE_SUBSONGS,buf,iniFile);
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config.downmix = (IsDlgButtonChecked(hDlg,IDC_DOWNMIX) == BST_CHECKED);
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cfg_sprintf(buf, TEXT("%d"),config.downmix);
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WritePrivateProfileString(CONFIG_APP_NAME,INI_ENTRY_DOWNMIX,buf,iniFile);
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config.loop_count = temp_loop_count;
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cfg_sprintf(buf, TEXT("%.2lf"),config.loop_count);
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WritePrivateProfileString(CONFIG_APP_NAME,INI_ENTRY_LOOP_COUNT,buf,iniFile);
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config.downmix_channels = temp_downmix_channels;
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cfg_sprintf(buf, TEXT("%d"),config.downmix_channels);
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WritePrivateProfileString(CONFIG_APP_NAME,INI_ENTRY_DOWNMIX_CHANNELS,buf,iniFile);
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}
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EndDialog(hDlg,TRUE);
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@ -593,7 +610,7 @@ INT_PTR CALLBACK configDlgProc(HWND hDlg, UINT uMsg, WPARAM wParam, LPARAM lPara
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CheckDlgButton(hDlg,IDC_LOOP_NORMALLY,BST_CHECKED);
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CheckDlgButton(hDlg,IDC_DISABLE_SUBSONGS,BST_UNCHECKED);
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CheckDlgButton(hDlg,IDC_DOWNMIX,BST_UNCHECKED);
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SetDlgItemText(hDlg,IDC_DOWNMIX_CHANNELS,DEFAULT_DOWNMIX_CHANNELS);
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break;
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default:
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@ -887,8 +904,8 @@ int winamp_Play(const in_char *fn) {
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vgmstream->loop_flag = 0;
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output_channels = vgmstream->channels;
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if (config.downmix)
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output_channels = vgmstream->channels > 2 ? 2 : vgmstream->channels;
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if (config.downmix_channels > 0 && config.downmix_channels < vgmstream->channels)
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output_channels = config.downmix_channels;
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/* save original name */
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@ -1180,19 +1197,28 @@ DWORD WINAPI __stdcall decode(void *arg) {
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}
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/* downmix enabled (useful when the stream's channels are too much for Winamp's output) */
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if (config.downmix) {
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if (config.downmix_channels > 0 && config.downmix_channels < vgmstream->channels) {
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short temp_buffer[(576*2) * 2];
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int s, ch;
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/* just copy the first channels for now */
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for (s = 0; s < samples_to_do; s++) {
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for (ch = 0; ch < output_channels; ch++) {
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temp_buffer[s*output_channels + ch] = sample_buffer[s*vgmstream->channels + ch];
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/* copy channels up to max */
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for (ch = 0; ch < config.downmix_channels; ch++) {
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temp_buffer[s*config.downmix_channels + ch] = sample_buffer[s*vgmstream->channels + ch];
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}
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/* then mix the rest */
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for (ch = config.downmix_channels; ch < vgmstream->channels; ch++) {
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int downmix_ch = ch % config.downmix_channels;
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int new_sample = ((int)temp_buffer[s*config.downmix_channels + downmix_ch] + (int)sample_buffer[s*vgmstream->channels + ch]);
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new_sample = (int)(new_sample * 0.7); /* limit clipping without removing too much loudness... hopefully */
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if (new_sample > 32767) new_sample = 32767;
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else if (new_sample < -32768) new_sample = -32768;
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temp_buffer[s*config.downmix_channels + downmix_ch] = (short)new_sample;
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}
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}
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/* copy back to global buffer */
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memcpy(sample_buffer,temp_buffer, samples_to_do*output_channels*sizeof(short));
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/* copy back to global buffer... in case of multithreading stuff? */
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memcpy(sample_buffer,temp_buffer, samples_to_do*config.downmix_channels*sizeof(short));
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}
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/* output samples */
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@ -9,4 +9,4 @@
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#define IDC_THREAD_PRIORITY_TEXT 1007
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#define IDC_DEFAULT_BUTTON 1008
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#define IDC_DISABLE_SUBSONGS 1009
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#define IDC_DOWNMIX 1010
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#define IDC_DOWNMIX_CHANNELS 1011
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@ -24,7 +24,8 @@ BEGIN
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CONTROL "Loop forever",IDC_LOOP_FOREVER,"Button",BS_AUTORADIOBUTTON | WS_TABSTOP,7,70,77,10
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CONTROL "Ignore looping",IDC_IGNORE_LOOP,"Button",BS_AUTORADIOBUTTON | WS_TABSTOP,7,83,77,10
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CONTROL "Disable subsongs",IDC_DISABLE_SUBSONGS,"Button",BS_AUTOCHECKBOX | WS_TABSTOP,7,99,87,10
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CONTROL "Downmix",IDC_DOWNMIX,"Button",BS_AUTOCHECKBOX | WS_TABSTOP,7,112,87,10
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LTEXT "Downmix",IDC_STATIC,7,115,48,12
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EDITTEXT IDC_DOWNMIX_CHANNELS,52,112,37,14,ES_AUTOHSCROLL
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LTEXT "Thread Priority",IDC_STATIC,21,132,46,8
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CONTROL "Slider1",IDC_THREAD_PRIORITY_SLIDER,"msctls_trackbar32",TBS_AUTOTICKS | WS_TABSTOP,7,140,77,10
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CTEXT "DATARIFIC",IDC_THREAD_PRIORITY_TEXT,7,153,77,18
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