Unix: new prefs options "dsp" and "mixer" to set the OSS device names instead

of the hardcoded '/dev/dsp' and '/dev/mixer'

BasiliskII/ChangeLog

@@ -5,13 +5,15 @@ V1.0 (snapshot) - <date>
  - Unix: add large file support for 2+ GB hard disk images
  - Unix: cleaned up pthread attributes [Brian Johnson]
  - Unix: fixed floppy problems under Linux
- - Unix: implement "ignoresegv" feature on Linux/x86, Linux/ppc, Darwin/ppc
+ - Unix: implemented "ignoresegv" feature on Linux/x86, Linux/ppc, Darwin/ppc
  - Unix: serial port baud rates are now set correctly
  - Unix: it is now possible to make the serial drivers pipe their input/output
    to programs by using a '|' followed by a command line as the modem or
    printer port setting (instead of a device name like '/dev/ttyS0')
    [Brian Johnson]
  - Unix: the option "--config FILE" tells B2 to use a different config file
+ - Unix: new prefs options "dsp" and "mixer" to set the OSS device names
+   instead of the hardcoded '/dev/dsp' and '/dev/mixer'
 
 V1.0 (snapshot) - 15.Jan.2002
  - added support for on-the-fly video resolution and depth switching, and

BasiliskII/README

@@ -285,7 +285,6 @@ screen <video mode>
     application via Alt-Tab, Basilisk II is put in "snooze" mode (i.e. MacOS
     is frozen).
 
-
   Mac OS X:
     The "video mode" is one of the following:
       win/<width>/<height>
@@ -302,7 +301,6 @@ screen <video mode>
       opengl/<width>/<height>/<bits per pixel>
         Currently unimplemented, will be a fast windowed mode.
 
-
 seriala <serial port description>
 
   This item describes the serial port to be used as Port A (Modem Port)
@@ -580,6 +578,13 @@ Unix:
     is "false". This feature is only implemented on the following
     platforms: Linux/x86, Linux/ppc, Darwin/ppc.
 
+  dsp <device name>
+  mixer <device name>
+
+    Under Linux and FreeBSD, this specifies the devices to be used for sound
+    output and volume control, respectively. The defaults are "/dev/dsp" and
+    "/dev/mixer".
+
 AmigaOS:
 
   sound <sound output description>

BasiliskII/TODO

@@ -28,7 +28,6 @@ AmigaOS:
 - Input handler instead of IDCMP?
 - Last sound buffer is not played
 - Sound output rate/bits/channels switching
-- Video depth/resolution switching
 
 BeOS:
 - clip_beos.cpp: clip BeOS->Basilisk

BasiliskII/src/Unix/audio_oss_esd.cpp

@@ -31,7 +31,7 @@
 #endif
 
 #ifdef __FreeBSD__
-#include <sys/soundcard.h>
+#include <machine/soundcard.h>
 #endif
 
 #include "cpu_emulation.h"
@@ -54,12 +54,9 @@ static int audio_sample_rate_index = 0;
 static int audio_sample_size_index = 0;
 static int audio_channel_count_index = 0;
 
-// Constants
-#define DSP_NAME "/dev/dsp"
-
 // Global variables
-static int audio_fd = -1;							// fd of /dev/dsp or ESD
-static int mixer_fd = -1;							// fd of /dev/mixer
+static int audio_fd = -1;							// fd of dsp or ESD
+static int mixer_fd = -1;							// fd of mixer
 static sem_t audio_irq_done_sem;					// Signal from interrupt to streaming thread: data block read
 static bool sem_inited = false;						// Flag: audio_irq_done_sem initialized
 static int sound_buffer_size;						// Size of sound buffer in bytes
@@ -86,17 +83,18 @@ static void set_audio_status_format(void)
 	AudioStatus.channels = audio_channel_counts[audio_channel_count_index];
 }
 
-// Init using /dev/dsp, returns false on error
+// Init using the dsp device, returns false on error
 static bool open_dsp(void)
 {
-	// Open /dev/dsp
-	audio_fd = open(DSP_NAME, O_WRONLY);
+	// Open the device
+	const char *dsp = PrefsFindString("dsp");
+	audio_fd = open(dsp, O_WRONLY);
 	if (audio_fd < 0) {
-		fprintf(stderr, "WARNING: Cannot open %s (%s)\n", DSP_NAME, strerror(errno));
+		fprintf(stderr, "WARNING: Cannot open %s (%s)\n", dsp, strerror(errno));
 		return false;
 	}
 
-	printf("Using " DSP_NAME " audio output\n");
+	printf("Using %s audio output\n", dsp);
 
 	// Get supported sample formats
 	if (audio_sample_sizes.empty()) {
@@ -213,7 +211,7 @@ static bool open_esd(void)
 
 		// The reason we do this here is that we don't want to add sample
 		// rates etc. unless the ESD server connection could be opened
-		// (if ESD fails, /dev/dsp might be tried next)
+		// (if ESD fails, dsp might be tried next)
 		audio_sample_rates.push_back(11025 << 16);
 		audio_sample_rates.push_back(22050 << 16);
 		audio_sample_rates.push_back(44100 << 16);
@@ -246,12 +244,12 @@ static bool open_audio(void)
 			goto dev_opened;
 #endif
 
-	// Try to open /dev/dsp
+	// Try to open dsp
 	if (open_dsp())
 		goto dev_opened;
 
 #ifdef ENABLE_ESD
-	// Hm, /dev/dsp failed so we try ESD again if ESPEAKER wasn't set
+	// Hm, dsp failed so we try ESD again if ESPEAKER wasn't set
 	if (!getenv("ESPEAKER"))
 		if (open_esd())
 			goto dev_opened;
@@ -294,10 +292,11 @@ void AudioInit(void)
 		return;
 	sem_inited = true;
 
-	// Try to open /dev/mixer
-	mixer_fd = open("/dev/mixer", O_RDWR);
+	// Try to open the mixer device
+	const char *mixer = PrefsFindString("mixer");
+	mixer_fd = open(mixer, O_RDWR);
 	if (mixer_fd < 0)
-		printf("WARNING: Cannot open /dev/mixer (%s)", strerror(errno));
+		printf("WARNING: Cannot open %s (%s)\n", mixer, strerror(errno));
 
 	// Open and initialize audio device
 	open_audio();
@@ -320,7 +319,7 @@ static void close_audio(void)
 		stream_thread_active = false;
 	}
 
-	// Close /dev/dsp or ESD socket
+	// Close dsp or ESD socket
 	if (audio_fd >= 0) {
 		close(audio_fd);
 		audio_fd = -1;
@@ -340,7 +339,7 @@ void AudioExit(void)
 		sem_inited = false;
 	}
 
-	// Close /dev/mixer
+	// Close mixer device
 	if (mixer_fd >= 0) {
 		close(mixer_fd);
 		mixer_fd = -1;

BasiliskII/src/Unix/prefs_editor_gtk.cpp

@@ -715,6 +715,8 @@ static GtkWidget *l_fbdev_name, *l_fbdevice_file;
 static char fbdev_name[256];
 #endif
 
+static GtkWidget *w_dspdevice_file, *w_mixerdevice_file;
+
 // Hide/show graphics widgets
 static void hide_show_graphics_widgets(void)
 {
@@ -761,10 +763,19 @@ static void mn_30hz(...) {PrefsReplaceInt32("frameskip", 2);}
 static void mn_60hz(...) {PrefsReplaceInt32("frameskip", 1);}
 static void mn_dynamic(...) {PrefsReplaceInt32("frameskip", 0);}
 
+// Set sensitivity of widgets
+static void set_graphics_sensitive(void)
+{
+	const bool sound_enabled = !PrefsFindBool("nosound");
+	gtk_widget_set_sensitive(w_dspdevice_file, sound_enabled);
+	gtk_widget_set_sensitive(w_mixerdevice_file, sound_enabled);
+}
+
 // "Disable Sound Output" button toggled
 static void tb_nosound(GtkWidget *widget)
 {
 	PrefsReplaceBool("nosound", GTK_TOGGLE_BUTTON(widget)->active);
+	set_graphics_sensitive();
 }
 
 // Read graphics preferences
@@ -827,6 +838,8 @@ static void read_graphics_settings(void)
 	else
 		PrefsRemoveItem("fbdevicefile");
 #endif
+	PrefsReplaceString("dsp", get_file_entry_path(w_dspdevice_file));
+	PrefsReplaceString("mixer", get_file_entry_path(w_mixerdevice_file));
 }
 
 // Create "Graphics/Sound" pane
@@ -947,6 +960,10 @@ static void create_graphics_pane(GtkWidget *top)
 
 	make_separator(box);
 	make_checkbox(box, STR_NOSOUND_CTRL, "nosound", GTK_SIGNAL_FUNC(tb_nosound));
+	w_dspdevice_file = make_file_entry(box, STR_DSPDEVICE_FILE_CTRL, "dsp");
+	w_mixerdevice_file = make_file_entry(box, STR_MIXERDEVICE_FILE_CTRL, "mixer");
+
+	set_graphics_sensitive();
 
 	hide_show_graphics_widgets();
 }

BasiliskII/src/Unix/prefs_unix.cpp

@@ -36,6 +36,8 @@ prefs_desc platform_prefs_items[] = {
 	{"fbdevicefile", TYPE_STRING, false,   "path of frame buffer device specification file"},
 	{"mousewheelmode", TYPE_INT32, false,  "mouse wheel support mode (0=page up/down, 1=cursor up/down)"},
 	{"mousewheellines", TYPE_INT32, false, "number of lines to scroll in mouse wheel mode 1"},
+	{"dsp", TYPE_STRING, false,            "audio output (dsp) device name"},
+	{"mixer", TYPE_STRING, false,          "audio mixer device name"},
 #ifdef HAVE_SIGSEGV_SKIP_INSTRUCTION
 	{"ignoresegv", TYPE_BOOLEAN, false,    "ignore illegal memory accesses"},
 #endif
@@ -105,6 +107,18 @@ void AddPlatformPrefsDefaults(void)
 	PrefsReplaceString("extfs", "/");
 	PrefsReplaceInt32("mousewheelmode", 1);
 	PrefsReplaceInt32("mousewheellines", 3);
+#ifdef __linux__
+	if (access("/dev/.devfsd", F_OK) < 0) {
+		PrefsReplaceString("dsp", "/dev/dsp");
+		PrefsReplaceString("mixer", "/dev/mixer");
+	} else {
+		PrefsReplaceString("dsp", "/dev/sound/dsp");
+		PrefsReplaceString("mixer", "/dev/sound/mixer");
+	}
+#else
+	PrefsReplaceString("dsp", "/dev/dsp");
+	PrefsReplaceString("mixer", "/dev/mixer");
+#endif
 #ifdef HAVE_SIGSEGV_SKIP_INSTRUCTION
 	PrefsAddBool("ignoresegv", false);
 #endif

BasiliskII/src/Unix/user_strings_unix.cpp

@@ -66,6 +66,8 @@ user_string_def platform_strings[] = {
 
 	{STR_FBDEV_NAME_CTRL, "Frame Buffer Name"},
 	{STR_FBDEVICE_FILE_CTRL, "Frame Buffer Spec File"},
+	{STR_DSPDEVICE_FILE_CTRL, "Audio Output Device"},
+	{STR_MIXERDEVICE_FILE_CTRL, "Audio Mixer Device"},
 
 	{STR_INPUT_PANE_TITLE, "Mouse/Keyboard"},
 	{STR_KEYCODES_CTRL, "Use Raw Keycodes"},

BasiliskII/src/Unix/user_strings_unix.h

@@ -57,6 +57,8 @@ enum {
 
 	STR_FBDEV_NAME_CTRL,
 	STR_FBDEVICE_FILE_CTRL,
+	STR_DSPDEVICE_FILE_CTRL,
+	STR_MIXERDEVICE_FILE_CTRL,
 
 	STR_INPUT_PANE_TITLE,
 	STR_KEYCODES_CTRL,