comparison: src/mediastreamer/mstruespeechencoder.c
src/mediastreamer/mstruespeechencoder.c
- branch
- gaim
- changeset 20470
- 77693555855f
- parent 13071
- b98e72d4089a
- parent 20469
- b2836a24d81e
- child 20471
- 1966704b3e42
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replaced
| 13071:b98e72d4089a | 20470:77693555855f |
|---|---|
| 1 /* | |
| 2 Copyright 2003 Robert W. Brewer <rbrewer at op.net> | |
| 3 | |
| 4 This library is free software; you can redistribute it and/or | |
| 5 modify it under the terms of the GNU Lesser General Public | |
| 6 License as published by the Free Software Foundation; either | |
| 7 version 2.1 of the License, or (at your option) any later version. | |
| 8 | |
| 9 This library is distributed in the hope that it will be useful, | |
| 10 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 12 Lesser General Public License for more details. | |
| 13 | |
| 14 You should have received a copy of the GNU Lesser General Public | |
| 15 License along with this library; if not, write to the Free Software | |
| 16 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 17 */ | |
| 18 | |
| 19 | |
| 20 #include "mstruespeechencoder.h" | |
| 21 #include "mscodec.h" | |
| 22 | |
| 23 #define TRUESPEECH_CBSIZE 32 | |
| 24 | |
| 25 extern MSCodecInfo TrueSpeechinfo; | |
| 26 | |
| 27 static MSTrueSpeechEncoderClass *ms_truespeechencoder_class = 0; | |
| 28 | |
| 29 /* FOR INTERNAL USE*/ | |
| 30 void ms_truespeechencoder_init(MSTrueSpeechEncoder *r); | |
| 31 void ms_truespeechencoder_class_init(MSTrueSpeechEncoderClass *klass); | |
| 32 void ms_truespeechencoder_destroy(MSTrueSpeechEncoder *obj); | |
| 33 void ms_truespeechencoder_process(MSTrueSpeechEncoder *r); | |
| 34 | |
| 35 MSFilter * ms_truespeechencoder_new(void) | |
| 36 { | |
| 37 MSTrueSpeechEncoder *r = 0; | |
| 38 | |
| 39 if (!ms_truespeechencoder_class) | |
| 40 { | |
| 41 ms_truespeechencoder_class = g_new(MSTrueSpeechEncoderClass, 1); | |
| 42 ms_truespeechencoder_class_init(ms_truespeechencoder_class); | |
| 43 } | |
| 44 | |
| 45 r = g_new(MSTrueSpeechEncoder, 1); | |
| 46 MS_FILTER(r)->klass = MS_FILTER_CLASS(ms_truespeechencoder_class); | |
| 47 ms_truespeechencoder_init(r); | |
| 48 return MS_FILTER(r); | |
| 49 } | |
| 50 | |
| 51 | |
| 52 /* FOR INTERNAL USE*/ | |
| 53 void ms_truespeechencoder_init(MSTrueSpeechEncoder *r) | |
| 54 { | |
| 55 ms_filter_init(MS_FILTER(r)); | |
| 56 MS_FILTER(r)->infifos = r->f_inputs; | |
| 57 MS_FILTER(r)->outfifos = r->f_outputs; | |
| 58 | |
| 59 WAVEFORMATEX* wf = ms_truespeechencoder_wf_create(); | |
| 60 | |
| 61 r->codec = win32codec_create(wf, 1); | |
| 62 free(wf); | |
| 63 | |
| 64 MS_FILTER(r)->r_mingran = r->codec->min_insize; | |
| 65 | |
| 66 MS_FILTER_CLASS(ms_truespeechencoder_class)->r_maxgran = | |
| 67 r->codec->min_insize; | |
| 68 MS_FILTER_CLASS(ms_truespeechencoder_class)->w_maxgran = | |
| 69 r->codec->min_outsize; | |
| 70 | |
| 71 memset(r->f_inputs, 0, sizeof(MSFifo*) * MS_TRUESPEECH_CODEC_MAX_IN_OUT); | |
| 72 memset(r->f_outputs, 0, sizeof(MSFifo*) * MS_TRUESPEECH_CODEC_MAX_IN_OUT); | |
| 73 } | |
| 74 | |
| 75 void ms_truespeechencoder_class_init(MSTrueSpeechEncoderClass *klass) | |
| 76 { | |
| 77 ms_filter_class_init(MS_FILTER_CLASS(klass)); | |
| 78 ms_filter_class_set_name(MS_FILTER_CLASS(klass), "TrueSpeechEncoder"); | |
| 79 MS_FILTER_CLASS(klass)->max_finputs = MS_TRUESPEECH_CODEC_MAX_IN_OUT; | |
| 80 MS_FILTER_CLASS(klass)->max_foutputs = MS_TRUESPEECH_CODEC_MAX_IN_OUT; | |
| 81 MS_FILTER_CLASS(klass)->r_maxgran = 0; /* filled in by first instance */ | |
| 82 MS_FILTER_CLASS(klass)->w_maxgran = 0; /* filled in by first instance */ | |
| 83 MS_FILTER_CLASS(klass)->destroy = (MSFilterDestroyFunc)ms_truespeechencoder_destroy; | |
| 84 MS_FILTER_CLASS(klass)->process = (MSFilterProcessFunc)ms_truespeechencoder_process; | |
| 85 MS_FILTER_CLASS(klass)->info = MS_FILTER_INFO(&TrueSpeechinfo); | |
| 86 klass->driver = win32codec_create_driver(TRUESPEECH_DLL, | |
| 87 TRUESPEECH_FORMAT_TAG, 1); | |
| 88 } | |
| 89 | |
| 90 void ms_truespeechencoder_process(MSTrueSpeechEncoder *r) | |
| 91 { | |
| 92 MSFifo *fi,*fo; | |
| 93 int err1; | |
| 94 void *s,*d; | |
| 95 | |
| 96 /* process output fifos, but there is only one for this class of filter*/ | |
| 97 | |
| 98 fi = r->f_inputs[0]; | |
| 99 fo = r->f_outputs[0]; | |
| 100 if (fi) | |
| 101 { | |
| 102 err1 = ms_fifo_get_read_ptr(fi, r->codec->min_insize, &s); | |
| 103 if (err1 > 0) | |
| 104 { | |
| 105 err1 = ms_fifo_get_write_ptr(fo, r->codec->min_outsize, &d); | |
| 106 if (d) | |
| 107 { | |
| 108 signed long n; | |
| 109 | |
| 110 n = win32codec_convert(r->codec, | |
| 111 s, r->codec->min_insize, | |
| 112 d, r->codec->min_outsize); | |
| 113 } | |
| 114 } | |
| 115 | |
| 116 } | |
| 117 } | |
| 118 | |
| 119 | |
| 120 | |
| 121 void ms_truespeechencoder_uninit(MSTrueSpeechEncoder *obj) | |
| 122 { | |
| 123 win32codec_destroy(obj->codec); | |
| 124 } | |
| 125 | |
| 126 void ms_truespeechencoder_destroy(MSTrueSpeechEncoder *obj) | |
| 127 { | |
| 128 ms_truespeechencoder_uninit(obj); | |
| 129 g_free(obj); | |
| 130 } | |
| 131 | |
| 132 | |
| 133 WAVEFORMATEX* ms_truespeechencoder_wf_create() | |
| 134 { | |
| 135 WAVEFORMATEX* ts_wf = 0; | |
| 136 long* iptr = 0; | |
| 137 | |
| 138 ts_wf = malloc(sizeof(WAVEFORMATEX) + TRUESPEECH_CBSIZE); | |
| 139 if (!ts_wf) | |
| 140 { | |
| 141 return 0; | |
| 142 } | |
| 143 | |
| 144 memset(ts_wf, 0, sizeof(*ts_wf) + TRUESPEECH_CBSIZE); | |
| 145 | |
| 146 ts_wf->wFormatTag = TRUESPEECH_FORMAT_TAG; | |
| 147 ts_wf->nChannels = 1; | |
| 148 ts_wf->nSamplesPerSec = 8000; | |
| 149 ts_wf->wBitsPerSample = 1; | |
| 150 ts_wf->nBlockAlign = 32; | |
| 151 ts_wf->nAvgBytesPerSec = 1067; | |
| 152 ts_wf->cbSize = TRUESPEECH_CBSIZE; | |
| 153 | |
| 154 /* write extra data needed by TrueSpeech codec found | |
| 155 from examining a TrueSpeech .wav file header | |
| 156 */ | |
| 157 iptr = (long*)(ts_wf + 1); | |
| 158 *iptr = 0x00f00001; | |
| 159 | |
| 160 return ts_wf; | |
| 161 } |
