Alexandre Lision | 8af73cb | 2013-12-10 14:11:20 -0500 | [diff] [blame] | 1 | /* Copyright (C) 2002 Jean-Marc Valin |
| 2 | File speex_callbacks.c |
| 3 | Callback handling and in-band signalling |
| 4 | |
| 5 | |
| 6 | Redistribution and use in source and binary forms, with or without |
| 7 | modification, are permitted provided that the following conditions |
| 8 | are met: |
| 9 | |
| 10 | - Redistributions of source code must retain the above copyright |
| 11 | notice, this list of conditions and the following disclaimer. |
| 12 | |
| 13 | - Redistributions in binary form must reproduce the above copyright |
| 14 | notice, this list of conditions and the following disclaimer in the |
| 15 | documentation and/or other materials provided with the distribution. |
| 16 | |
| 17 | - Neither the name of the Xiph.org Foundation nor the names of its |
| 18 | contributors may be used to endorse or promote products derived from |
| 19 | this software without specific prior written permission. |
| 20 | |
| 21 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 22 | ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 23 | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 24 | A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR |
| 25 | CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| 26 | EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| 27 | PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| 28 | PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| 29 | LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| 30 | NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 31 | SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 32 | |
| 33 | */ |
| 34 | |
| 35 | #ifdef HAVE_CONFIG_H |
| 36 | #include "config.h" |
| 37 | #endif |
| 38 | |
| 39 | #include <speex/speex_callbacks.h> |
| 40 | #include "arch.h" |
| 41 | #include "os_support.h" |
| 42 | |
| 43 | EXPORT int speex_inband_handler(SpeexBits *bits, SpeexCallback *callback_list, void *state) |
| 44 | { |
| 45 | int id; |
| 46 | SpeexCallback *callback; |
| 47 | /*speex_bits_advance(bits, 5);*/ |
| 48 | id=speex_bits_unpack_unsigned(bits, 4); |
| 49 | callback = callback_list+id; |
| 50 | |
| 51 | if (callback->func) |
| 52 | { |
| 53 | return callback->func(bits, state, callback->data); |
| 54 | } else |
| 55 | /*If callback is not registered, skip the right number of bits*/ |
| 56 | { |
| 57 | int adv; |
| 58 | if (id<2) |
| 59 | adv = 1; |
| 60 | else if (id<8) |
| 61 | adv = 4; |
| 62 | else if (id<10) |
| 63 | adv = 8; |
| 64 | else if (id<12) |
| 65 | adv = 16; |
| 66 | else if (id<14) |
| 67 | adv = 32; |
| 68 | else |
| 69 | adv = 64; |
| 70 | speex_bits_advance(bits, adv); |
| 71 | } |
| 72 | return 0; |
| 73 | } |
| 74 | |
| 75 | EXPORT int speex_std_mode_request_handler(SpeexBits *bits, void *state, void *data) |
| 76 | { |
| 77 | spx_int32_t m; |
| 78 | m = speex_bits_unpack_unsigned(bits, 4); |
| 79 | speex_encoder_ctl(data, SPEEX_SET_MODE, &m); |
| 80 | return 0; |
| 81 | } |
| 82 | |
| 83 | EXPORT int speex_std_low_mode_request_handler(SpeexBits *bits, void *state, void *data) |
| 84 | { |
| 85 | spx_int32_t m; |
| 86 | m = speex_bits_unpack_unsigned(bits, 4); |
| 87 | speex_encoder_ctl(data, SPEEX_SET_LOW_MODE, &m); |
| 88 | return 0; |
| 89 | } |
| 90 | |
| 91 | EXPORT int speex_std_high_mode_request_handler(SpeexBits *bits, void *state, void *data) |
| 92 | { |
| 93 | spx_int32_t m; |
| 94 | m = speex_bits_unpack_unsigned(bits, 4); |
| 95 | speex_encoder_ctl(data, SPEEX_SET_HIGH_MODE, &m); |
| 96 | return 0; |
| 97 | } |
| 98 | |
| 99 | #ifndef DISABLE_VBR |
| 100 | EXPORT int speex_std_vbr_request_handler(SpeexBits *bits, void *state, void *data) |
| 101 | { |
| 102 | spx_int32_t vbr; |
| 103 | vbr = speex_bits_unpack_unsigned(bits, 1); |
| 104 | speex_encoder_ctl(data, SPEEX_SET_VBR, &vbr); |
| 105 | return 0; |
| 106 | } |
| 107 | #endif /* #ifndef DISABLE_VBR */ |
| 108 | |
| 109 | EXPORT int speex_std_enh_request_handler(SpeexBits *bits, void *state, void *data) |
| 110 | { |
| 111 | spx_int32_t enh; |
| 112 | enh = speex_bits_unpack_unsigned(bits, 1); |
| 113 | speex_decoder_ctl(data, SPEEX_SET_ENH, &enh); |
| 114 | return 0; |
| 115 | } |
| 116 | |
| 117 | #ifndef DISABLE_VBR |
| 118 | EXPORT int speex_std_vbr_quality_request_handler(SpeexBits *bits, void *state, void *data) |
| 119 | { |
| 120 | float qual; |
| 121 | qual = speex_bits_unpack_unsigned(bits, 4); |
| 122 | speex_encoder_ctl(data, SPEEX_SET_VBR_QUALITY, &qual); |
| 123 | return 0; |
| 124 | } |
| 125 | #endif /* #ifndef DISABLE_VBR */ |
| 126 | |
| 127 | EXPORT int speex_std_char_handler(SpeexBits *bits, void *state, void *data) |
| 128 | { |
| 129 | unsigned char ch; |
| 130 | ch = speex_bits_unpack_unsigned(bits, 8); |
| 131 | _speex_putc(ch, data); |
| 132 | /*printf("speex_std_char_handler ch=%x\n", ch);*/ |
| 133 | return 0; |
| 134 | } |
| 135 | |
| 136 | |
| 137 | |
| 138 | /* Default handler for user callbacks: skip it */ |
| 139 | EXPORT int speex_default_user_handler(SpeexBits *bits, void *state, void *data) |
| 140 | { |
| 141 | int req_size = speex_bits_unpack_unsigned(bits, 4); |
| 142 | speex_bits_advance(bits, 5+8*req_size); |
| 143 | return 0; |
| 144 | } |