Simulator first commit

node_modules/lame/deps/mpg123/src/output/esd.c

@@ -0,0 +1,167 @@
+/*
+	esd: audio output for ESounD (highly untested nowadays (?))
+
+	copyright ?-2006 by the mpg123 project - free software under the terms of the LGPL 2.1
+	see COPYING and AUTHORS files in distribution or http://mpg123.org
+	initially written by Eric B. Mitchell ("esd port" should be this file...)
+*/
+
+/* First the common header, including config.h
+   ...this is important for stuff like _FILE_OFFSET_BITS */
+#include "mpg123app.h"
+
+#include <esd.h>
+#include <errno.h>
+#include <assert.h>
+
+#ifdef SOLARIS
+#include <stropts.h>
+#include <sys/conf.h>
+#endif
+#ifdef NETBSD
+#include <sys/ioctl.h>
+#include <sys/audioio.h>
+#endif
+#include "debug.h"
+
+static unsigned esd_rate = 0, esd_format = 0, esd_channels = 0;
+
+
+static int open_esound(audio_output_t *ao)
+{
+	esd_format_t format = ESD_STREAM | ESD_PLAY;
+
+	if (!esd_rate)
+	{
+		int esd;
+		esd_server_info_t *info;
+		esd_format_t fmt;
+		
+		if ((esd = esd_open_sound(NULL)) >= 0)
+		{
+			info = esd_get_server_info(esd);
+			esd_rate = info->rate;
+			fmt = info->format;
+			esd_free_server_info(info);
+			esd_close(esd);
+		}
+		else
+		{
+			esd_rate = esd_audio_rate;
+			fmt = esd_audio_format;
+		}
+		esd_format = MPG123_ENC_UNSIGNED_8;
+		
+		if ((fmt & ESD_MASK_BITS) == ESD_BITS16)
+			esd_format |= MPG123_ENC_SIGNED_16;
+		esd_channels = fmt & ESD_MASK_CHAN;
+	}
+	
+	if (ao->format == -1)
+		ao->format = esd_format;
+	else if (!(ao->format & esd_format))
+	{
+		error1("Unsupported audio format: %d\n", ao->format);
+		errno = EINVAL;
+		return -1;
+	}
+	
+	
+	if (ao->format & MPG123_ENC_SIGNED_16)
+		format |= ESD_BITS16;
+	else if (ao->format & MPG123_ENC_UNSIGNED_8)
+		format |= ESD_BITS8;
+	else assert(0);
+	
+	if (ao->channels == -1) ao->channels = 2;
+	else if (ao->channels <= 0 || ao->channels > esd_channels)
+	{
+		error1("Unsupported no of channels: %d\n", ao->channels);
+		errno = EINVAL;
+		return -1;
+	}
+	if (ao->channels == 1)
+		format |= ESD_MONO;
+	else if (ao->channels == 2)
+		format |= ESD_STEREO;
+	else assert(0);
+	
+	if (ao->rate == -1) ao->rate = esd_rate;
+	else if (ao->rate > esd_rate)
+	return -1;
+	
+	ao->fn = esd_play_stream_fallback(format, ao->rate, ao->device, "mpg123");
+	return (ao->fn);
+}
+
+static int get_formats_esound (audio_output_t *ao)
+{
+	if (0 < ao->channels && ao->channels <= esd_channels 
+	    && 0 < ao->rate && ao->rate <= esd_rate)
+	{
+		return esd_format;
+	} else {
+		return -1;
+	}
+}
+
+static int write_esound(audio_output_t *ao,unsigned char *buf,int len)
+{
+	return write(ao->fn,buf,len);
+}
+
+static int close_esound(audio_output_t *ao)
+{
+	close (ao->fn);
+	return 0;
+}
+
+#ifdef SOLARIS
+static void flush_esound (audio_output_t *ao)
+{
+        ioctl (ao->fn, I_FLUSH, FLUSHRW);
+}
+#else
+#ifdef NETBSD
+static void flush_esound (audio_output_t *ao)
+{
+        ioctl (ao->fn, AUDIO_FLUSH, 0);
+}
+#else
+/* Dunno what to do on Linux and Cygwin, but the func must be at least defined! */
+static void flush_esound (audio_output_t *ao)
+{
+}
+#endif
+#endif
+
+
+static int init_esound(audio_output_t* ao)
+{
+	if (ao==NULL) return -1;
+
+	/* Set callbacks */
+	ao->open = open_esound;
+	ao->flush = flush_esound;
+	ao->write = write_esound;
+	ao->get_formats = get_formats_esound;
+	ao->close = close_esound;
+
+	/* Success */
+	return 0;
+}
+
+
+
+/* 
+	Module information data structure
+*/
+mpg123_module_t mpg123_output_module_info = {
+	/* api_version */	MPG123_MODULE_API_VERSION,
+	/* name */			"esd",						
+	/* description */	"Output audio using ESounD (The Enlightened Sound Daemon).",
+	/* revision */		"$Rev: 1698 $",						
+	/* handle */		NULL,
+	
+	/* init_output */	init_esound,						
+};