141 lines
4.0 KiB
C
141 lines
4.0 KiB
C
/* Copyright (C) 2002 Jean-Marc Valin
|
|
File speex_callbacks.c
|
|
Callback handling and in-band signalling
|
|
|
|
|
|
Redistribution and use in source and binary forms, with or without
|
|
modification, are permitted provided that the following conditions
|
|
are met:
|
|
|
|
- Redistributions of source code must retain the above copyright
|
|
notice, this list of conditions and the following disclaimer.
|
|
|
|
- Redistributions in binary form must reproduce the above copyright
|
|
notice, this list of conditions and the following disclaimer in the
|
|
documentation and/or other materials provided with the distribution.
|
|
|
|
- Neither the name of the Xiph.org Foundation nor the names of its
|
|
contributors may be used to endorse or promote products derived from
|
|
this software without specific prior written permission.
|
|
|
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
|
|
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
|
|
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
|
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
|
|
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
|
|
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
|
|
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
|
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include <speex/speex_callbacks.h>
|
|
#include "misc.h"
|
|
|
|
int speex_inband_handler(SpeexBits *bits, SpeexCallback *callback_list, void *state)
|
|
{
|
|
int id;
|
|
SpeexCallback *callback;
|
|
/*speex_bits_advance(bits, 5);*/
|
|
id=speex_bits_unpack_unsigned(bits, 4);
|
|
callback = callback_list+id;
|
|
|
|
if (callback->func)
|
|
{
|
|
return callback->func(bits, state, callback->data);
|
|
} else
|
|
/*If callback is not registered, skip the right number of bits*/
|
|
{
|
|
int adv;
|
|
if (id<2)
|
|
adv = 1;
|
|
else if (id<8)
|
|
adv = 4;
|
|
else if (id<10)
|
|
adv = 8;
|
|
else if (id<12)
|
|
adv = 16;
|
|
else if (id<14)
|
|
adv = 32;
|
|
else
|
|
adv = 64;
|
|
speex_bits_advance(bits, adv);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int speex_std_mode_request_handler(SpeexBits *bits, void *state, void *data)
|
|
{
|
|
int m;
|
|
m = speex_bits_unpack_unsigned(bits, 4);
|
|
speex_encoder_ctl(data, SPEEX_SET_MODE, &m);
|
|
return 0;
|
|
}
|
|
|
|
int speex_std_low_mode_request_handler(SpeexBits *bits, void *state, void *data)
|
|
{
|
|
int m;
|
|
m = speex_bits_unpack_unsigned(bits, 4);
|
|
speex_encoder_ctl(data, SPEEX_SET_LOW_MODE, &m);
|
|
return 0;
|
|
}
|
|
|
|
int speex_std_high_mode_request_handler(SpeexBits *bits, void *state, void *data)
|
|
{
|
|
int m;
|
|
m = speex_bits_unpack_unsigned(bits, 4);
|
|
speex_encoder_ctl(data, SPEEX_SET_HIGH_MODE, &m);
|
|
return 0;
|
|
}
|
|
|
|
int speex_std_vbr_request_handler(SpeexBits *bits, void *state, void *data)
|
|
{
|
|
int vbr;
|
|
vbr = speex_bits_unpack_unsigned(bits, 1);
|
|
speex_encoder_ctl(data, SPEEX_SET_VBR, &vbr);
|
|
return 0;
|
|
}
|
|
|
|
int speex_std_enh_request_handler(SpeexBits *bits, void *state, void *data)
|
|
{
|
|
int enh;
|
|
enh = speex_bits_unpack_unsigned(bits, 1);
|
|
speex_decoder_ctl(data, SPEEX_SET_ENH, &enh);
|
|
return 0;
|
|
}
|
|
|
|
int speex_std_vbr_quality_request_handler(SpeexBits *bits, void *state, void *data)
|
|
{
|
|
int qual;
|
|
qual = speex_bits_unpack_unsigned(bits, 4);
|
|
speex_encoder_ctl(data, SPEEX_SET_VBR_QUALITY, &qual);
|
|
return 0;
|
|
}
|
|
|
|
|
|
int speex_std_char_handler(SpeexBits *bits, void *state, void *data)
|
|
{
|
|
unsigned char ch;
|
|
ch = speex_bits_unpack_unsigned(bits, 8);
|
|
_speex_putc(ch, data);
|
|
/*printf("speex_std_char_handler ch=%x\n", ch);*/
|
|
return 0;
|
|
}
|
|
|
|
|
|
|
|
/* Default handler for user callbacks: skip it */
|
|
int speex_default_user_handler(SpeexBits *bits, void *state, void *data)
|
|
{
|
|
int req_size = speex_bits_unpack_unsigned(bits, 4);
|
|
speex_bits_advance(bits, 5+8*req_size);
|
|
return 0;
|
|
}
|