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296 lines
12 KiB
C
296 lines
12 KiB
C
/*
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* libInstPatch
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* Copyright (C) 1999-2014 Element Green <element@elementsofsound.org>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public License
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* as published by the Free Software Foundation; version 2.1
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* of the License only.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA or on the web at http://www.gnu.org.
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*/
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#ifndef __IPATCH_SAMPLE_H__
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#define __IPATCH_SAMPLE_H__
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#include <glib.h>
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#include <glib-object.h>
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#include <libinstpatch/IpatchSampleTransform.h>
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/* forward type declarations */
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typedef struct _IpatchSample IpatchSample; /* dummy typedef */
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typedef struct _IpatchSampleIface IpatchSampleIface;
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typedef struct _IpatchSampleHandle IpatchSampleHandle;
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#include <libinstpatch/IpatchSampleData.h>
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#define IPATCH_TYPE_SAMPLE (ipatch_sample_get_type ())
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#define IPATCH_SAMPLE(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST ((obj), IPATCH_TYPE_SAMPLE, \
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IpatchSample))
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#define IPATCH_SAMPLE_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST ((klass), IPATCH_TYPE_SAMPLE, \
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IpatchSampleIface))
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#define IPATCH_IS_SAMPLE(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE ((obj), IPATCH_TYPE_SAMPLE))
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#define IPATCH_SAMPLE_GET_IFACE(obj) \
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(G_TYPE_INSTANCE_GET_INTERFACE ((obj), IPATCH_TYPE_SAMPLE, \
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IpatchSampleIface))
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/**
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* IpatchSampleHandleOpenFunc:
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* @handle: Caller supplied structure to initialize
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* @err: Location to store error information
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*
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* #IpatchSample interface method function type to open a sample for reading
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* or writing. This method is optional for an #IpatchSample interface and if
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* not specified then it is assumed that the open was successful and nothing
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* additional need be done. All fields of @handle structure are already
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* initialized, except <structfield>data1</structfield>,
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* <structfield>data2</structfield> and <structfield>data3</structfield>
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* which are available for the interface implementation.
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*
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* Returns: %TRUE on success, %FALSE otherwise (in which case an error should
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* optionally be stored in @err).
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*/
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typedef gboolean(*IpatchSampleHandleOpenFunc)(IpatchSampleHandle *handle,
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GError **err);
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/**
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* IpatchSampleHandleCloseFunc:
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* @handle: Sample handle to close (as returned from #IpatchSampleHandleOpenFunc)
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*
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* #IpatchSample interface method to free any resources allocated in
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* #IpatchSampleOpenFunc to @handle. This method is optional for an
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* #IpatchSample interface and need not be specified if nothing needs to be done
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* to release any resources allocated by #IpatchSampleHandleOpenFunc.
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*/
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typedef void (*IpatchSampleHandleCloseFunc)(IpatchSampleHandle *handle);
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/**
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* IpatchSampleHandleReadFunc:
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* @handle: Handle to read from (as returned from #IpatchSampleOpenFunc)
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* @offset: Offset in sample to start read from (in frames), use
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* #IPATCH_SAMPLE_CUROFS to use current offset (starts at 0 if not specified)
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* @frames: Size of sample data to read (in frames)
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* @buf: Buffer to store sample data in
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* @err: Location to store error information
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*
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* #IpatchSample interface method function type to read data from a
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* sample handle. Can be %NULL in #IpatchSampleIface if sample data is not
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* readable. Sample data should be stored in its native format.
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*
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* Returns: Should return %TRUE on success, %FALSE otherwise (in which case
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* an error should optionally be stored in @err).
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*/
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typedef gboolean(*IpatchSampleHandleReadFunc)(IpatchSampleHandle *handle,
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guint offset, guint frames,
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gpointer buf, GError **err);
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/**
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* IpatchSampleHandleWriteFunc:
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* @handle: Handle to write to (as returned from #IpatchSampleOpenFunc)
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* @offset: Offset in sample to start write to (in frames), use
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* #IPATCH_SAMPLE_CUROFS to use current offset (starts at 0 if not specified)
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* @frames: Size of sample data to write (in frames)
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* @buf: Buffer to store sample data in
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* @err: Location to store error information
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*
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* #IpatchSample interface method function type to write data to a
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* sample handle. Can be %NULL in #IpatchSampleIface if sample data is not
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* writable. Sample data will be supplied in its native format.
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*
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* Returns: Should return %TRUE on success, %FALSE otherwise (in which case
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* an error should optionally be stored in @err).
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*/
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typedef gboolean(*IpatchSampleHandleWriteFunc)(IpatchSampleHandle *handle,
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guint offset, guint frames,
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gconstpointer buf, GError **err);
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/* Sample interface */
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struct _IpatchSampleIface
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{
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GTypeInterface parent_class;
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IpatchSampleHandleOpenFunc open;
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IpatchSampleHandleCloseFunc close;
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IpatchSampleHandleReadFunc read;
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IpatchSampleHandleWriteFunc write;
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int *loop_types; /* -1 terminated array of supp. loop types (NULL = none) */
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};
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/* Sample handle for I/O operations */
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struct _IpatchSampleHandle
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{
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IpatchSample *sample; /* The sample which this handle applies to */
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IpatchSampleTransform *transform; /* Set if sample is being converted */
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IpatchSampleHandleReadFunc read; /* Read method pointer (copied from IpatchItem interface) */
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IpatchSampleHandleWriteFunc write; /* Write method pointer (copied from IpatchItem interface) */
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IpatchSampleHandleCloseFunc close; /* Close method pointer (copied from IpatchItem interface) */
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guint32 read_mode : 1; /* TRUE if read mode, FALSE if write mode */
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guint32 manual_transform : 1; /* Methods handle sample transform */
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guint32 release_transform : 1; /* TRUE if transform should be released from transform pool */
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guint32 format : 12; /* Format to transform to */
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guint32 reserved : 17;
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guint32 channel_map; /* Channel map for multi-channel audio transform */
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gpointer data1; /* sample interface defined */
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gpointer data2; /* sample interface defined */
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gpointer data3; /* sample interface defined */
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gpointer data4; /* sample interface defined */
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guint32 reserved2;
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};
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/**
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* IpatchSampleLoopType:
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* @IPATCH_SAMPLE_LOOP_NONE: No loop.
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* @IPATCH_SAMPLE_LOOP_STANDARD: Standard loop.
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* @IPATCH_SAMPLE_LOOP_RELEASE: Loop till note release stage.
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* @IPATCH_SAMPLE_LOOP_PINGPONG: Play forward and then in reverse continously.
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*
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* Sample looping type.
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*/
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typedef enum
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{
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IPATCH_SAMPLE_LOOP_NONE,
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IPATCH_SAMPLE_LOOP_STANDARD,
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IPATCH_SAMPLE_LOOP_RELEASE,
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IPATCH_SAMPLE_LOOP_PINGPONG
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} IpatchSampleLoopType;
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/**
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* IPATCH_SAMPLE_FORMAT_DEFAULT:
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*
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* Default sample format for #IpatchSample interface.
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*/
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#define IPATCH_SAMPLE_FORMAT_DEFAULT (IPATCH_SAMPLE_16BIT | IPATCH_SAMPLE_MONO \
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| IPATCH_SAMPLE_LENDIAN | IPATCH_SAMPLE_SIGNED)
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/**
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* IPATCH_SAMPLE_RATE_MIN: (skip)
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*
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* Minimum sample rate.
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* SoundFont spec says 8000 Hz is minimum guaranteed, seen lots of smaller values though.
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*/
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#define IPATCH_SAMPLE_RATE_MIN 100
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/**
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* IPATCH_SAMPLE_RATE_MAX: (skip)
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*
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* Maximum sample rate.
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*/
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#define IPATCH_SAMPLE_RATE_MAX 192000
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/**
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* IPATCH_SAMPLE_RATE_DEFAULT: (skip)
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*
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* Default sample rate.
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*/
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#define IPATCH_SAMPLE_RATE_DEFAULT 44100
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/**
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* IPATCH_SAMPLE_ROOT_NOTE_DEFAULT: (skip)
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*
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* Default root note.
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*/
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#define IPATCH_SAMPLE_ROOT_NOTE_DEFAULT 60
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/**
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* IPATCH_SAMPLE_LOOP_TYPE_TERM:
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*
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* Value used for terminating list of supported loop types.
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*/
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#define IPATCH_SAMPLE_LOOP_TYPE_TERM (-1)
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/**
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* IPATCH_SAMPLE_HANDLE_FORMAT:
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* @handle: Sample handle
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*
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* Macro to access transform sample format of a sample handle.
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*
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* Returns: Sample transform format.
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*/
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#define IPATCH_SAMPLE_HANDLE_FORMAT(handle) ((handle)->format)
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/* some convenient loop_type arrays for use by IpatchSample interfaces */
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extern int ipatch_sample_loop_types_standard[];
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extern int ipatch_sample_loop_types_standard_release[];
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GType ipatch_sample_get_type(void);
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int *ipatch_sample_get_loop_types(IpatchSample *sample);
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int *ipatch_sample_type_get_loop_types(GType type);
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int *ipatch_sample_get_loop_types_len(IpatchSample *sample, int *len);
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int *ipatch_sample_type_get_loop_types_len(GType type, int *len);
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void ipatch_sample_set_format(IpatchSample *sample, int format);
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int ipatch_sample_get_format(IpatchSample *sample);
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void ipatch_sample_set_size(IpatchSample *sample, guint size);
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guint ipatch_sample_get_size(IpatchSample *sample, guint *bytes);
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int ipatch_sample_get_frame_size(IpatchSample *sample);
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IpatchSampleData *ipatch_sample_get_sample_data(IpatchSample *sample);
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gboolean ipatch_sample_set_sample_data(IpatchSample *sample,
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IpatchSampleData *sampledata);
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gboolean ipatch_sample_read(IpatchSample *sample, guint offset, guint frames,
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gpointer buf, GError **err);
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gpointer ipatch_sample_read_size(IpatchSample *sample, guint offset, guint size, GError **err);
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gboolean ipatch_sample_write(IpatchSample *sample, guint offset, guint frames,
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gconstpointer buf, GError **err);
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gboolean ipatch_sample_write_size(IpatchSample *sample, guint offset,
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gconstpointer buf, guint size, GError **err);
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gboolean ipatch_sample_read_transform(IpatchSample *sample, guint offset, guint frames,
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gpointer buf, int format, guint32 channel_map,
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GError **err);
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gpointer ipatch_sample_read_transform_size(IpatchSample *sample, guint offset, guint size,
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int format, guint32 channel_map, GError **err);
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gboolean ipatch_sample_write_transform(IpatchSample *sample, guint offset, guint frames,
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gconstpointer buf, int format, guint32 channel_map,
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GError **err);
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gboolean ipatch_sample_write_transform_size(IpatchSample *sample, guint offset,
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gconstpointer buf, guint size, int format,
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guint32 channel_map, GError **err);
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gboolean ipatch_sample_copy(IpatchSample *dest_sample, IpatchSample *src_sample,
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guint32 channel_map, GError **err);
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gboolean ipatch_sample_save_to_file(IpatchSample *sample, const char *filename,
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int file_format, int sub_format, GError **err);
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gboolean ipatch_sample_handle_open(IpatchSample *sample,
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IpatchSampleHandle *handle, char mode,
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int format, guint32 channel_map, GError **err);
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void ipatch_sample_handle_close(IpatchSampleHandle *handle);
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IpatchSampleTransform *ipatch_sample_handle_get_transform(IpatchSampleHandle *handle);
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void ipatch_sample_handle_set_transform(IpatchSampleHandle *handle,
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IpatchSampleTransform *transform);
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int ipatch_sample_handle_get_format(IpatchSampleHandle *handle);
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int ipatch_sample_handle_get_frame_size(IpatchSampleHandle *handle);
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guint ipatch_sample_handle_get_max_frames(IpatchSampleHandle *handle);
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gpointer ipatch_sample_handle_read(IpatchSampleHandle *handle, guint offset, guint frames,
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gpointer buf, GError **err);
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gpointer
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ipatch_sample_handle_read_size(IpatchSampleHandle *handle, guint offset,
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guint size, GError **err);
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gboolean ipatch_sample_handle_write(IpatchSampleHandle *handle, guint offset, guint frames,
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gconstpointer buf, GError **err);
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gboolean
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ipatch_sample_handle_write_size(IpatchSampleHandle *handle, guint offset,
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gconstpointer buf, guint size, GError **err);
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gboolean ipatch_sample_handle_cascade_open(IpatchSampleHandle *handle,
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IpatchSample *sample, GError **err);
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GParamSpec *ipatch_sample_install_property(GObjectClass *oclass,
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guint property_id,
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const char *property_name);
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GParamSpec *ipatch_sample_install_property_readonly(GObjectClass *oclass,
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guint property_id,
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const char *property_name);
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GParamSpec *ipatch_sample_new_property_param_spec(const char *property_name,
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GParamFlags flags);
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#endif
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