patch-2.1.63 linux/drivers/sound/softoss.h

• Lines: 161
• Date: Tue Sep 30 08:46:45 1997
• Orig file: v2.1.62/linux/drivers/sound/softoss.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.1.62/linux/drivers/sound/softoss.h linux/drivers/sound/softoss.h
@@ -0,0 +1,160 @@
+/*
+ * softoss.h	- Definitions for Software MIDI Synthesizer.
+ */
+/*
+ * Copyright (C) by Hannu Savolainen 1993-1997
+ *
+ * OSS/Free for Linux is distributed under the GNU GENERAL PUBLIC LICENSE (GPL)
+ * Version 2 (June 1991). See the "COPYING" file distributed with this software
+ * for more info.
+ */
+
+
+/*
+ * Sequencer mode1 timer calls made by sequencer.c
+ */
+extern int (*softsynthp) (int cmd, int parm1, int parm2, unsigned long parm3);
+
+#define SSYN_START	1
+#define SSYN_REQUEST	2	/* parm1 = time */
+#define SSYN_STOP	3
+#define SSYN_GETTIME	4	/* Returns number of ticks since reset */
+
+#define MAX_PATCH 256
+#define MAX_SAMPLE 512
+#define MAX_VOICE 32
+#define DEFAULT_VOICES 16
+
+typedef struct voice_info
+{
+/*
+ * Don't change anything in the beginning of this struct. These fields are used
+ * by the resampling loop which may have been written in assembly for some
+ * architectures. Any change may make the resampling code incompatible
+ */
+  int instr;
+  short *wave;
+  struct patch_info *sample;
+
+  unsigned int ptr; int step; /* Pointer to the wave data and pointer increment */
+
+  int mode;
+  int startloop, startbackloop, endloop, looplen;
+
+  unsigned int leftvol, rightvol;
+/***** Don't change anything above this */
+
+  volatile unsigned long orig_freq, current_freq;
+  volatile int bender, bender_range, panning;
+  volatile int main_vol, expression_vol, patch_vol, velocity;
+
+/* Envelope parameters */
+
+  int envelope_phase;
+  volatile int envelope_vol;
+  volatile int envelope_volstep;
+  int envelope_time; /* Number of remaining envelope steps */
+  unsigned int envelope_target;
+  int percussive_voice;
+  int sustain_mode; /* 0=off, 1=sustain on, 2=sustain on+key released */
+
+/*	Vibrato	*/
+  int vibrato_rate;
+  int vibrato_depth;
+  int vibrato_phase;
+  int vibrato_step;
+  int vibrato_level;
+
+/*	Tremolo	*/
+  int tremolo_rate;
+  int tremolo_depth;
+  int tremolo_phase;
+  int tremolo_step;
+  int tremolo_level;
+} voice_info;
+
+extern voice_info softoss_voices[MAX_VOICE]; /* Voice spesific info */
+
+typedef struct softsyn_devc
+{
+/*
+ * Don't change anything in the beginning of this struct. These fields are used
+ * by the resampling loop which may have been written in assembly for some
+ * architectures. Any change may make the resampling code incompatible
+ */
+	int maxvoice;		/* # of voices to be processed */
+  	int afterscale;
+	int delay_size;
+  	int control_rate, control_counter;
+/***** Don't change anything above this */
+
+	int ram_size;
+	int ram_used;
+
+	int synthdev;
+	int sequencer_mode;
+/*
+ *	Audio parameters
+ */
+
+	int audiodev;
+	int audio_opened;
+	int speed;
+	int channels;
+	int bits;
+	int default_max_voices;
+	int max_playahead;
+	struct fileinfo finfo;
+	int fragsize;
+	int samples_per_fragment;
+	
+/*
+ * 	Sample storage
+ */
+	int nrsamples;
+	struct patch_info *samples[MAX_SAMPLE];
+	short *wave[MAX_SAMPLE];
+
+/*
+ * 	Programs
+ */
+	int programs[MAX_SAMPLE];
+
+/*
+ *	Timer parameters
+ */
+	volatile unsigned long usecs;
+	volatile unsigned long usecs_per_frag;
+	volatile unsigned long next_event_usecs;
+
+/*
+ * 	Engine state
+ */
+
+	volatile int engine_state;
+#define ES_STOPPED			0
+#define ES_STARTED			1
+
+	/* Voice spesific bitmaps */
+	volatile int tremolomap; 
+	volatile int vibratomap;
+
+} softsyn_devc;
+
+void softsynth_resample_loop(short *buf, int loops);
+extern void softsyn_control_loop(void);
+
+#define DELAY_SIZE	4096
+
+#ifdef SOFTSYN_MAIN
+  short voice_active[MAX_VOICE] = {0};
+  voice_info softoss_voices[MAX_VOICE] = {{0}}; /* Voice spesific info */
+  int left_delay[DELAY_SIZE]={0}, right_delay[DELAY_SIZE]={0};
+  int delayp=0;
+#else
+  extern softsyn_devc *devc;
+
+  extern int left_delay[DELAY_SIZE], right_delay[DELAY_SIZE];
+  extern int delayp;
+  extern short voice_active[MAX_VOICE];
+#endif