72 lines
1.6 KiB
C
72 lines
1.6 KiB
C
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/*
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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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#include "pcm_byteswap.h"
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#include "pcm_buffer.h"
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#include <glib.h>
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#include <assert.h>
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#undef G_LOG_DOMAIN
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#define G_LOG_DOMAIN "pcm"
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static inline uint16_t swab16(uint16_t x)
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{
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return (x << 8) | (x >> 8);
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}
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const int16_t *pcm_byteswap_16(struct pcm_buffer *buffer,
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const int16_t *src, size_t len)
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{
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unsigned i;
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int16_t *buf = pcm_buffer_get(buffer, len);
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if (!buf)
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return NULL;
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for (i = 0; i < len / 2; i++)
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buf[i] = swab16(src[i]);
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return buf;
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}
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static inline uint32_t swab32(uint32_t x)
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{
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return (x << 24) |
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((x & 0xff00) << 8) |
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((x & 0xff0000) >> 8) |
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(x >> 24);
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}
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const int32_t *pcm_byteswap_32(struct pcm_buffer *buffer,
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const int32_t *src, size_t len)
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{
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unsigned i;
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int32_t *buf = pcm_buffer_get(buffer, len);
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if (!buf)
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return NULL;
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for (i = 0; i < len / 4; i++)
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buf[i] = swab32(src[i]);
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return buf;
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}
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