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96 lines
4.3 KiB
C
96 lines
4.3 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_TRANSFORM_H__
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#define __IPATCH_SAMPLE_TRANSFORM_H__
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#include <stdio.h>
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#include <glib.h>
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typedef struct _IpatchSampleTransform IpatchSampleTransform;
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/**
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* IpatchSampleTransformFunc:
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* @transform: Sample transform object
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*
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* Audio conversion handler prototype. Handler will modify
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* <structfield>samples</structfield> of @transform if number of samples
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* changes (a change in the number of channels occurs).
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*/
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typedef void (*IpatchSampleTransformFunc)(IpatchSampleTransform *transform);
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#include <libinstpatch/sample.h>
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/* sample transform object */
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struct _IpatchSampleTransform
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{
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guint16 src_format; /* source sample format */
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guint16 dest_format; /* destination sample format */
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guint8 channel_map[8]; /* channel mapping for multi-channel audio */
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guint8 buf1_max_frame; /* max bytes per frame for buf1 */
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guint8 buf2_max_frame; /* max bytes per frame for buf2 */
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guint8 func_count; /* number of functions in funcs array */
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guint8 free_buffers; /* set to TRUE if buffers need to be freed */
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guint max_frames; /* max frames that can be converted in batch */
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guint frames; /* number of frames to transform */
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guint samples; /* # of samples for current transform func (not frames!)*/
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gpointer buf1; /* buffer 1 (first input) */
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gpointer buf2; /* buffer 2 */
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guint combined_size; /* size in bytes of both buffers (if combined) */
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gpointer reserved1; /* Reserved field */
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gpointer reserved2; /* Reserved field */
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/* array of transform funcs */
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IpatchSampleTransformFunc funcs[IPATCH_SAMPLE_MAX_TRANSFORM_FUNCS];
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};
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GType ipatch_sample_transform_get_type(void);
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IpatchSampleTransform *ipatch_sample_transform_new
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(int src_format, int dest_format, guint32 channel_map);
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void ipatch_sample_transform_free(IpatchSampleTransform *transform);
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IpatchSampleTransform *ipatch_sample_transform_duplicate(const IpatchSampleTransform *transform);
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void ipatch_sample_transform_init(IpatchSampleTransform *transform);
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IpatchSampleTransform *ipatch_sample_transform_pool_acquire
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(int src_format, int dest_format, guint32 channel_map);
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void ipatch_sample_transform_pool_release(IpatchSampleTransform *transform);
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void ipatch_sample_transform_set_formats(IpatchSampleTransform *transform,
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int src_format, int dest_format,
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guint32 channel_map);
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void ipatch_sample_transform_alloc(IpatchSampleTransform *transform,
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guint frames);
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int ipatch_sample_transform_alloc_size(IpatchSampleTransform *transform,
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guint size);
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void ipatch_sample_transform_free_buffers(IpatchSampleTransform *transform);
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guint ipatch_sample_transform_set_buffers_size(IpatchSampleTransform *transform,
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gpointer buf, guint size);
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void ipatch_sample_transform_get_buffers(IpatchSampleTransform *transform,
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gpointer *buf1, gpointer *buf2);
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void ipatch_sample_transform_get_frame_sizes(IpatchSampleTransform *transform,
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guint *buf1_size,
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guint *buf2_size);
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guint ipatch_sample_transform_get_max_frames(IpatchSampleTransform *transform);
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gpointer ipatch_sample_transform_convert(IpatchSampleTransform *transform,
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gconstpointer src, gpointer dest,
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guint frames);
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gpointer ipatch_sample_transform_convert_sizes(IpatchSampleTransform *transform,
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gconstpointer src, guint src_size,
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guint *dest_size);
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gpointer ipatch_sample_transform_convert_single(IpatchSampleTransform *transform,
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guint frames);
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#endif
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