diff options
Diffstat (limited to 'pjmedia/src/pjmedia/wave.c')
| -rw-r--r-- | pjmedia/src/pjmedia/wave.c | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/pjmedia/src/pjmedia/wave.c b/pjmedia/src/pjmedia/wave.c new file mode 100644 index 0000000..4d6f780 --- /dev/null +++ b/pjmedia/src/pjmedia/wave.c @@ -0,0 +1,58 @@ +/* $Id: wave.c 3553 2011-05-05 06:14:19Z nanang $ */ +/* + * Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com) + * Copyright (C) 2003-2008 Benny Prijono <benny@prijono.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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ +#include <pjmedia/wave.h> + +/* + * Change the endianness of WAVE header fields. + */ +static void wave_hdr_swap_bytes( pjmedia_wave_hdr *hdr ) +{ +#if defined(PJ_IS_BIG_ENDIAN) && PJ_IS_BIG_ENDIAN!=0 + hdr->riff_hdr.riff = pj_swap32(hdr->riff_hdr.riff); + hdr->riff_hdr.file_len = pj_swap32(hdr->riff_hdr.file_len); + hdr->riff_hdr.wave = pj_swap32(hdr->riff_hdr.wave); + + hdr->fmt_hdr.fmt = pj_swap32(hdr->fmt_hdr.fmt); + hdr->fmt_hdr.len = pj_swap32(hdr->fmt_hdr.len); + hdr->fmt_hdr.fmt_tag = pj_swap16(hdr->fmt_hdr.fmt_tag); + hdr->fmt_hdr.nchan = pj_swap16(hdr->fmt_hdr.nchan); + hdr->fmt_hdr.sample_rate = pj_swap32(hdr->fmt_hdr.sample_rate); + hdr->fmt_hdr.bytes_per_sec = pj_swap32(hdr->fmt_hdr.bytes_per_sec); + hdr->fmt_hdr.block_align = pj_swap16(hdr->fmt_hdr.block_align); + hdr->fmt_hdr.bits_per_sample = pj_swap16(hdr->fmt_hdr.bits_per_sample); + + hdr->data_hdr.data = pj_swap32(hdr->data_hdr.data); + hdr->data_hdr.len = pj_swap32(hdr->data_hdr.len); +#else + PJ_UNUSED_ARG(hdr); +#endif +} + + +PJ_DEF(void) pjmedia_wave_hdr_file_to_host( pjmedia_wave_hdr *hdr ) +{ + wave_hdr_swap_bytes(hdr); +} + +PJ_DEF(void) pjmedia_wave_hdr_host_to_file( pjmedia_wave_hdr *hdr ) +{ + wave_hdr_swap_bytes(hdr); +} + |