/* * Copyright (C) 2003-2009 The Music Player Daemon Project * http://www.musicpd.org * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program 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 General Public License for more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ #include "pcm_byteswap.h" #include "pcm_buffer.h" #include <glib.h> #include <assert.h> #undef G_LOG_DOMAIN #define G_LOG_DOMAIN "pcm" static inline uint16_t swab16(uint16_t x) { return (x << 8) | (x >> 8); } const int16_t *pcm_byteswap_16(struct pcm_buffer *buffer, const int16_t *src, size_t len) { unsigned i; int16_t *buf = pcm_buffer_get(buffer, len); if (!buf) return NULL; for (i = 0; i < len / 2; i++) buf[i] = swab16(src[i]); return buf; } static inline uint32_t swab32(uint32_t x) { return (x << 24) | ((x & 0xff00) << 8) | ((x & 0xff0000) >> 8) | (x >> 24); } const int32_t *pcm_byteswap_32(struct pcm_buffer *buffer, const int32_t *src, size_t len) { unsigned i; int32_t *buf = pcm_buffer_get(buffer, len); if (!buf) return NULL; for (i = 0; i < len / 4; i++) buf[i] = swab32(src[i]); return buf; }