0aee49bdf8
This updates the copyright header to all be the same, which is pretty much an update of where to mail request for a copy of the GPL and the years of the MPD project. This also puts all committers under 'The Music Player Project' umbrella. These entries should go individually in the AUTHORS file, for consistancy.
76 lines
2.2 KiB
C
76 lines
2.2 KiB
C
/*
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* Copyright (C) 2003-2009 The Music Player Daemon Project
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* http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef PCM_CONVERT_H
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#define PCM_CONVERT_H
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#include "pcm_resample.h"
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#include "pcm_dither.h"
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#include "pcm_buffer.h"
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struct audio_format;
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/**
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* This object is statically allocated (within another struct), and
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* holds buffer allocations and the state for all kinds of PCM
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* conversions.
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*/
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struct pcm_convert_state {
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struct pcm_resample_state resample;
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struct pcm_dither dither;
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/** the buffer for converting the sample format */
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struct pcm_buffer format_buffer;
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/** the buffer for converting the channel count */
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struct pcm_buffer channels_buffer;
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};
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/**
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* Initializes a pcm_convert_state object.
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*/
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void pcm_convert_init(struct pcm_convert_state *state);
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/**
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* Deinitializes a pcm_convert_state object and frees allocated
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* memory.
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*/
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void pcm_convert_deinit(struct pcm_convert_state *state);
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/**
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* Converts PCM data between two audio formats.
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*
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* @param state an initialized pcm_convert_state object
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* @param src_format the source audio format
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* @param src the source PCM buffer
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* @param src_size the size of #src in bytes
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* @param dest_format the requested destination audio format
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* @param dest_size_r returns the number of bytes of the destination buffer
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* @return the destination buffer
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*/
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const void *
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pcm_convert(struct pcm_convert_state *state,
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const struct audio_format *src_format,
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const void *src, size_t src_size,
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const struct audio_format *dest_format,
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size_t *dest_size_r);
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#endif
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