Add BSD sound driver

Signed-off-by: Claudio Matsuoka <cmatsuoka@gmail.com>

configure.ac

@@ -15,7 +15,7 @@ fi
 AC_CHECK_HEADERS(xmp.h getopt.h signal.h termios.h)
 AC_CHECK_HEADER(windows.h,,[
   AC_CHECK_HEADER(CoreAudio/CoreAudio.h,,[
-    AC_CHECK_HEADERS(sys/soundcard.h alsa/asoundlib.h sndio.h)
+    AC_CHECK_HEADERS(sys/soundcard.h alsa/asoundlib.h sndio.h sys/audioio.h)
   ])
 ])
 
@@ -40,6 +40,10 @@ else
     DRIVERS="${DRIVERS} sound_sndio.o"
     LIBS="${LIBS} -lsndio"
   fi
+  if test "${ac_cv_header_sys_audioio_h}" = "yes"; then
+    AC_DEFINE(SOUND_BSD)
+    DRIVERS="${DRIVERS} sound_bsd.o"
+  fi
   if test "${ac_cv_header_sys_soundcard_h}" = "yes"; then
     AC_DEFINE(SOUND_OSS)
     DRIVERS="${DRIVERS} sound_oss.o"

src/Makefile

@@ -2,7 +2,8 @@
 SRC_OBJS	= sound.o sound_null.o terminal.o info.o commands.o \
 		  options.o getopt.o getopt1.o main.o
 SRC_DFILES	= Makefile xmp.1 $(SRC_OBJS:.o=.c) common.h getopt.h \
-		  sound_alsa.c sound_coreaudio.c sound_oss.c sound_sndio.c
+		  sound_alsa.c sound_coreaudio.c sound_oss.c sound_sndio.c \
+		  sound_bsd.c
 SRC_PATH	= src
 
 SRC_OBJS += $(DRIVERS)

src/sound.c

@@ -7,6 +7,7 @@ extern struct sound_driver sound_alsa;
 extern struct sound_driver sound_win32;
 extern struct sound_driver sound_coreaudio;
 extern struct sound_driver sound_sndio;
+extern struct sound_driver sound_bsd;
 
 LIST_HEAD(sound_driver_list);
 
@@ -20,6 +21,9 @@ void init_sound_drivers()
 #ifdef SOUND_SNDIO
 	register_sound_driver(&sound_sndio);
 #endif
+#ifdef SOUND_BSD
+	register_sound_driver(&sound_bsd);
+#endif
 #ifdef SOUND_COREAUDIO
 	register_sound_driver(&sound_coreaudio);
 #endif

src/sound_bsd.c

@@ -6,10 +6,6 @@
  * for more information.
  */
 
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
 #include <sys/types.h>
 #include <sys/param.h>
 #include <sys/audioio.h>
@@ -21,39 +17,15 @@
 #include <string.h>
 #include <unistd.h>
 
-#include "common.h"
-#include "driver.h"
-#include "mixer.h"
-
 static int audio_fd;
 
-static int init(struct context_data *);
-static int setaudio(struct xmp_option *);
-static void bufdump(struct context_data *, void *, int);
-static void shutdown(struct context_data *);
-
-static void dummy()
-{
-}
-
 static char *help[] = {
 	"gain=val", "Audio output gain (0 to 255)",
 	"buffer=val", "Audio buffer size (default is 32768)",
 	NULL
 };
 
-struct xmp_drv_info drv_bsd = {
-	"bsd",			/* driver ID */
-	"BSD PCM audio",	/* driver description */
-	help,			/* help */
-	init,			/* init */
-	shutdown,		/* shutdown */
-	dummy,			/* starttimer */
-	dummy,			/* flush */
-	bufdump,		/* bufdump */
-};
-
-static int setaudio(struct xmp_options *o)
+static int init(int *rate, int *format)
 {
 	audio_info_t ainfo;
 	int gain = 128;
@@ -70,41 +42,37 @@ static int setaudio(struct xmp_options *o)
 	if (gain > AUDIO_MAX_GAIN)
 		gain = AUDIO_MAX_GAIN;
 
+	if ((audio_fd = open("/dev/sound", O_WRONLY)) == -1)
+		return -1;
+
 	AUDIO_INITINFO(&ainfo);
 
-	ainfo.play.sample_rate = o->freq;
-	ainfo.play.channels = o->outfmt & XMP_FORMAT_MONO ? 1 : 2;
-	ainfo.play.precision = o->resol;
-	ainfo.play.encoding = o->resol > 8 ?
-	    AUDIO_ENCODING_SLINEAR : AUDIO_ENCODING_ULINEAR;
+	ainfo.play.sample_rate = *rate;
+	ainfo.play.channels = *format & XMP_FORMAT_MONO ? 1 : 2;
 	ainfo.play.gain = gain;
 	ainfo.play.buffer_size = bsize;
 
+	if (*format & XMP_FORMAT_8BIT) {
+		ainfo.play.precision = 8;
+		ainfo.play.encoding = AUDIO_ENCODING_ULINEAR;
+		*format |= XMP_FORMAT_UNSIGNED;
+	} else {
+		ainfo.play.precision = 16;
+		ainfo.play.encoding = AUDIO_ENCODING_SLINEAR;
+		*format &= ~XMP_FORMAT_UNSIGNED;
+	}
+
 	if (ioctl(audio_fd, AUDIO_SETINFO, &ainfo) == -1) {
 		close(audio_fd);
-		return XMP_ERR_DINIT;
+		return -1;
 	}
-
-	drv_bsd.description = "BSD PCM audio";
-
-	return 0;
-}
-
-static int init(struct context_data *ctx)
-{
-	if ((audio_fd = open("/dev/sound", O_WRONLY)) == -1)
-		return XMP_ERR_DINIT;
-
 	if (setaudio(o) != 0)
-		return XMP_ERR_DINIT;
+		return -1;
 
 	return 0;
 }
 
-/* Build and write one tick (one PAL frame or 1/50 s in standard vblank
- * timed mods) of audio data to the output device.
- */
-static void bufdump(struct context_data *ctx, void *b, int i)
+static void play(void *b, int i)
 {
 	int j;
 
@@ -117,7 +85,31 @@ static void bufdump(struct context_data *ctx, void *b, int i)
 	};
 }
 
-static void shutdown(struct context_data *ctx)
+static void deinit()
 {
 	close(audio_fd);
 }
+
+static void flush()
+{
+}
+
+static void onpause()
+{
+}
+
+static void onresume()
+{
+}
+
+struct sound_driver sound_bsd = {
+	"bsd",
+	"BSD PCM audio",
+	help,
+	init,
+	deinit,
+	play,
+	flush,
+	onpause,
+	onresume
+};