1 files changed, 129 insertions, 0 deletions
diff --git a/flow/gsl/gslwavechunk.h b/flow/gsl/gslwavechunk.h
new file mode 100644
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--- /dev/null
+++ b/flow/gsl/gslwavechunk.h
@@ -0,0 +1,129 @@
+/* GSL - Generic Sound Layer
+ * Copyright (C) 2001 Tim Janik
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General
+ * Public License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+#ifndef __GSL_WAVE_CHUNK_H__
+#define __GSL_WAVE_CHUNK_H__
+
+#include <gsl/gsldefs.h>
+#include <gsl/gsldatacache.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+
+/* --- typedefs & structures --- */
+typedef enum /*< skip >*/
+{
+  GSL_WAVE_LOOP_NONE,
+  GSL_WAVE_LOOP_JUMP,
+  GSL_WAVE_LOOP_PINGPONG
+} GslWaveLoopType;
+typedef struct
+{
+  GslLong start, end, length;
+  gfloat *mem;
+} GslWaveChunkMem;
+struct _GslWaveChunk
+{
+  /* wave chunk data residency */
+  GslDataCache   *dcache;
+  GslLong	  length;	/* number of per-channel-values * n-channels */
+
+  /* chunk specific parameters */
+  gint		  n_channels;
+  GslLong	  n_pad_values;	/* guaranteed pad values around blocks */
+  GslLong	  wave_length;	/* start + loop duration + end (single channel) */
+
+  /* flags */
+  guint		  pploop_ends_backwards : 1;
+  guint		  mini_loop : 1;
+
+  /* loop spec */
+  GslWaveLoopType loop_type;
+  GslLong	  loop_first;
+  GslLong	  loop_last;
+  guint		  loop_count;
+
+  /* preformatted blocks */
+  GslWaveChunkMem head;
+  GslWaveChunkMem enter;
+  GslWaveChunkMem wrap;
+  GslWaveChunkMem ppwrap;
+  GslWaveChunkMem leave;
+  GslWaveChunkMem tail;
+  GslLong	  leave_end_norm;
+  GslLong	  tail_start_norm;
+
+  GslWaveLoopType requested_loop_type;
+  GslLong         requested_loop_first;
+  GslLong         requested_loop_last;
+  guint           requested_loop_count;
+  guint           ref_count;
+  guint           open_count;
+  /* legacy */
+  gfloat	  mix_freq;	/* recorded with mix_freq */
+  gfloat	  osc_freq;	/* while oscillating at osc_freq */
+};
+struct _GslWaveChunkBlock
+{
+  /* requisition (in) */
+  gint		play_dir;	/* usually +1 */
+  GslLong	offset;		/* requested offset into wave */
+  /* result (out) */
+  GslLong	length;		/* resulting signed? length of block in # values */
+  gboolean	is_silent;	/* sample end reached, values are 0 */
+  gint		dirstride;	/* >0 => increment, <0 => decrement */
+  gfloat       *start;		/* first data value location */
+  gfloat       *end;		/* last data value location +1 */
+  GslLong	next_offset;	/* offset of next adjunct block */
+  /*< private >*/
+  gpointer	node;
+};
+
+
+/* --- prototypes --- */
+void		gsl_wave_chunk_use_block	(GslWaveChunk		*wave_chunk,
+						 GslWaveChunkBlock	*block);
+void		gsl_wave_chunk_unuse_block	(GslWaveChunk		*wave_chunk,
+						 GslWaveChunkBlock	*block);
+GslWaveChunk*	gsl_wave_chunk_new		(GslDataCache		*dcache,
+						 gfloat			 osc_freq,
+						 gfloat			 mix_freq,
+						 GslWaveLoopType	 loop_type,
+						 GslLong		 loop_first,
+						 GslLong		 loop_end,
+						 guint			 loop_count);
+GslWaveChunk*	gsl_wave_chunk_ref		(GslWaveChunk		*wchunk);
+void		gsl_wave_chunk_unref		(GslWaveChunk		*wchunk);
+GslErrorType	gsl_wave_chunk_open		(GslWaveChunk		*wchunk);
+void		gsl_wave_chunk_close		(GslWaveChunk		*wchunk);
+void		gsl_wave_chunk_debug_block	(GslWaveChunk		*wchunk,
+						 GslLong		 offset,
+						 GslLong		 length,
+						 gfloat			*block);
+GslWaveChunk*	_gsl_wave_chunk_copy		(GslWaveChunk		*wchunk);
+const gchar*	gsl_wave_loop_type_to_string	(GslWaveLoopType	 wave_loop);
+GslWaveLoopType	gsl_wave_loop_type_from_string	(const gchar		*string);
+
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* __GSL_WAVE_CHUNK_H__ */