1 /* Copyright (C) 2002 Jean-Marc Valin
3 Callback handling and in-band signalling
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39 #include <speex/speex_callbacks.h>
42 int speex_inband_handler(SpeexBits *bits, SpeexCallback *callback_list, void *state)
45 SpeexCallback *callback;
46 /*speex_bits_advance(bits, 5);*/
47 id=speex_bits_unpack_unsigned(bits, 4);
48 callback = callback_list+id;
52 return callback->func(bits, state, callback->data);
54 /*If callback is not registered, skip the right number of bits*/
69 speex_bits_advance(bits, adv);
74 int speex_std_mode_request_handler(SpeexBits *bits, void *state, void *data)
77 m = speex_bits_unpack_unsigned(bits, 4);
78 speex_encoder_ctl(data, SPEEX_SET_MODE, &m);
82 int speex_std_low_mode_request_handler(SpeexBits *bits, void *state, void *data)
85 m = speex_bits_unpack_unsigned(bits, 4);
86 speex_encoder_ctl(data, SPEEX_SET_LOW_MODE, &m);
90 int speex_std_high_mode_request_handler(SpeexBits *bits, void *state, void *data)
93 m = speex_bits_unpack_unsigned(bits, 4);
94 speex_encoder_ctl(data, SPEEX_SET_HIGH_MODE, &m);
98 int speex_std_vbr_request_handler(SpeexBits *bits, void *state, void *data)
101 vbr = speex_bits_unpack_unsigned(bits, 1);
102 speex_encoder_ctl(data, SPEEX_SET_VBR, &vbr);
106 int speex_std_enh_request_handler(SpeexBits *bits, void *state, void *data)
109 enh = speex_bits_unpack_unsigned(bits, 1);
110 speex_decoder_ctl(data, SPEEX_SET_ENH, &enh);
114 int speex_std_vbr_quality_request_handler(SpeexBits *bits, void *state, void *data)
117 qual = speex_bits_unpack_unsigned(bits, 4);
118 speex_encoder_ctl(data, SPEEX_SET_VBR_QUALITY, &qual);
123 int speex_std_char_handler(SpeexBits *bits, void *state, void *data)
126 ch = speex_bits_unpack_unsigned(bits, 8);
127 _speex_putc(ch, data);
128 /*printf("speex_std_char_handler ch=%x\n", ch);*/
134 /* Default handler for user callbacks: skip it */
135 int speex_default_user_handler(SpeexBits *bits, void *state, void *data)
137 int req_size = speex_bits_unpack_unsigned(bits, 4);
138 speex_bits_advance(bits, 5+8*req_size);