[2295] | 1 | //transcode_speex.c: |
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| 2 | |
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| 3 | /* |
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[5381] | 4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2009-2012 |
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[2295] | 5 | * |
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| 6 | * This file is part of libroardsp a part of RoarAudio, |
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| 7 | * a cross-platform sound system for both, home and professional use. |
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| 8 | * See README for details. |
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| 9 | * |
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| 10 | * This file is free software; you can redistribute it and/or modify |
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| 11 | * it under the terms of the GNU General Public License version 3 |
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| 12 | * as published by the Free Software Foundation. |
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| 13 | * |
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| 14 | * libroardsp is distributed in the hope that it will be useful, |
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| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 17 | * GNU General Public License for more details. |
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| 18 | * |
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| 19 | * You should have received a copy of the GNU General Public License |
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| 20 | * along with this software; see the file COPYING. If not, write to |
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[3517] | 21 | * the Free Software Foundation, 51 Franklin Street, Fifth Floor, |
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| 22 | * Boston, MA 02110-1301, USA. |
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[2295] | 23 | * |
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| 24 | */ |
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| 25 | |
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| 26 | #include "libroardsp.h" |
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| 27 | |
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| 28 | #ifdef ROAR_HAVE_LIBSPEEX |
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| 29 | |
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| 30 | #define _16BIT (16/8) |
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| 31 | #define _SIZE_LEN 2 |
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| 32 | |
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[2894] | 33 | #define _HAVE_CCFG(x) (self->codec_config != NULL && (self->codec_config->para_set & (x))) |
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| 34 | |
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[2296] | 35 | int roar_xcoder_speex_init (struct roar_xcoder * state) { |
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[3063] | 36 | struct roar_xcoder_speex * self = roar_mm_malloc(sizeof(struct roar_xcoder_speex)); |
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[2298] | 37 | struct roar_audio_info * info = &(state->info.pcm); |
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| 38 | int tmp; |
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| 39 | |
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[2311] | 40 | ROAR_DBG("roar_xcoder_speex_init(*): sizeof(*self) = %lu", (unsigned long)sizeof(*self)); |
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| 41 | |
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[2298] | 42 | if ( self == NULL ) |
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| 43 | return -1; |
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| 44 | |
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| 45 | // curruntly only 16 bit mode is supported |
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| 46 | if ( info->bits != 16 ) { |
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[3063] | 47 | roar_mm_free(self); |
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[2298] | 48 | return -1; |
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| 49 | } |
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| 50 | |
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[2305] | 51 | // only mono/stereo mode is supported |
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| 52 | switch (info->channels) { |
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| 53 | case 1: self->stereo = 0; break; |
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| 54 | case 2: self->stereo = 1; break; |
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| 55 | default: |
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[3063] | 56 | roar_mm_free(self); |
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[2305] | 57 | return -1; |
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[2298] | 58 | } |
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| 59 | |
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| 60 | memset(self, 0, sizeof(struct roar_xcoder_speex)); |
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| 61 | |
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| 62 | state->inst = self; |
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| 63 | |
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| 64 | self->mode = ROAR_SPEEX_MODE_UWB; |
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| 65 | |
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| 66 | if (state->encode) { |
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[2894] | 67 | self->codec_config = roar_libroar_config_codec_get(ROAR_CODEC_ROAR_SPEEX, 0); |
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| 68 | self->max_cc = ROAR_SPEEX_MAX_CC; |
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| 69 | |
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[2914] | 70 | ROAR_DBG("roar_xcoder_speex_init(*): self->codec_config=%p", self->codec_config); |
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| 71 | |
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[2894] | 72 | if ( _HAVE_CCFG(ROAR_LIBROAR_CONFIG_PSET_MAX_CC) ) { |
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| 73 | self->max_cc = self->codec_config->max_cc; |
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| 74 | } |
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| 75 | |
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[2964] | 76 | if ( info->rate < 12000 ) { |
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| 77 | self->mode = ROAR_SPEEX_MODE_NB; // optimized for 8kHz |
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| 78 | } else if ( info->rate < 24000 ) { |
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| 79 | self->mode = ROAR_SPEEX_MODE_WB; // optimized for 16kHz |
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| 80 | } else { |
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| 81 | self->mode = ROAR_SPEEX_MODE_UWB; // optimized for 32kHz |
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| 82 | } |
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| 83 | |
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[2963] | 84 | if ( _HAVE_CCFG(ROAR_LIBROAR_CONFIG_PSET_MODE) ) { |
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| 85 | // NB, WB and UWB mode numbers are the same for Speex and codec config. |
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| 86 | self->mode = self->codec_config->mode; |
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| 87 | } |
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| 88 | |
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[2298] | 89 | switch (self->mode) { |
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| 90 | case ROAR_SPEEX_MODE_NB: self->xcoder = speex_encoder_init(&speex_nb_mode); break; |
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| 91 | case ROAR_SPEEX_MODE_WB: self->xcoder = speex_encoder_init(&speex_wb_mode); break; |
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| 92 | case ROAR_SPEEX_MODE_UWB: self->xcoder = speex_encoder_init(&speex_uwb_mode); break; |
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[2963] | 93 | default: return -1; |
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[2298] | 94 | } |
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[2894] | 95 | |
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| 96 | if ( _HAVE_CCFG(ROAR_LIBROAR_CONFIG_PSET_COMPLEXITY) ) { |
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| 97 | tmp = self->codec_config->complexity / 256; |
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| 98 | } else { |
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| 99 | tmp = 8; |
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| 100 | } |
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[2974] | 101 | speex_encoder_ctl(self->xcoder, SPEEX_SET_COMPLEXITY, &tmp); |
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[2894] | 102 | |
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| 103 | if ( _HAVE_CCFG(ROAR_LIBROAR_CONFIG_PSET_Q) ) { |
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| 104 | tmp = self->codec_config->q / 256; |
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[2965] | 105 | speex_encoder_ctl(self->xcoder, SPEEX_SET_QUALITY, &tmp); |
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[2894] | 106 | } |
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| 107 | |
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[2927] | 108 | if ( _HAVE_CCFG(ROAR_LIBROAR_CONFIG_PSET_VBR) ) { |
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| 109 | tmp = self->codec_config->vbr ? 1 : 0; |
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[2965] | 110 | speex_encoder_ctl(self->xcoder, SPEEX_SET_VBR, &tmp); |
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[2927] | 111 | } |
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| 112 | |
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[2894] | 113 | if ( _HAVE_CCFG(ROAR_LIBROAR_CONFIG_PSET_DTX) ) { |
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| 114 | tmp = self->codec_config->dtx ? 1 : 0; |
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[2965] | 115 | speex_encoder_ctl(self->xcoder, SPEEX_SET_DTX, &tmp); |
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[2894] | 116 | } |
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| 117 | |
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[2302] | 118 | tmp = info->rate; |
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| 119 | speex_encoder_ctl(self->xcoder, SPEEX_SET_SAMPLING_RATE, &tmp); |
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| 120 | speex_encoder_ctl(self->xcoder, SPEEX_GET_FRAME_SIZE, &(self->frame_size)); |
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[2298] | 121 | } else { |
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| 122 | self->xcoder = NULL; |
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| 123 | } |
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| 124 | |
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| 125 | speex_bits_init(&(self->bits)); |
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| 126 | |
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| 127 | return 0; |
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[2296] | 128 | } |
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| 129 | |
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| 130 | int roar_xcoder_speex_uninit (struct roar_xcoder * state) { |
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[2298] | 131 | struct roar_xcoder_speex * self = state->inst; |
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| 132 | |
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| 133 | if ( self->xcoder != NULL ) { |
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| 134 | if (state->encode) { |
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| 135 | speex_encoder_destroy(self->xcoder); |
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| 136 | } else { |
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| 137 | speex_decoder_destroy(self->xcoder); |
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| 138 | } |
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| 139 | } |
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| 140 | |
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| 141 | speex_bits_destroy(&(self->bits)); |
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| 142 | |
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[3063] | 143 | roar_mm_free(self); |
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[2298] | 144 | |
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| 145 | return 0; |
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[2296] | 146 | } |
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| 147 | |
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| 148 | int roar_xcoder_speex_packet_size(struct roar_xcoder * state, int samples) { |
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[2298] | 149 | struct roar_xcoder_speex * self = state->inst; |
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[2300] | 150 | |
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| 151 | if (!state->encode) |
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| 152 | if (state->stage != ROAR_XCODER_STAGE_OPENED) |
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| 153 | return -1; |
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[2298] | 154 | |
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[2305] | 155 | return _16BIT * self->frame_size * (self->stereo ? 2 : 1); |
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[2296] | 156 | } |
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| 157 | |
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[2923] | 158 | int roar_xcoder_speex_proc_header(struct roar_xcoder * state) { |
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| 159 | struct roar_xcoder_speex * self = state->inst; |
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[2924] | 160 | uint16_t tmp_net; |
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| 161 | int tmp; |
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| 162 | SpeexStereoState stereo = SPEEX_STEREO_STATE_INIT; |
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| 163 | SpeexCallback callback; |
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| 164 | char magic[ROAR_SPEEX_MAGIC_LEN]; |
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[2923] | 165 | |
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| 166 | // we do allready open streams not considder an error. |
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| 167 | if ( state->stage == ROAR_XCODER_STAGE_OPENED ) |
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| 168 | return 0; |
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| 169 | |
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| 170 | // everything else expected an INITED stream (OPENING, MAGIC,..) |
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| 171 | // is an error... |
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| 172 | if ( state->stage != ROAR_XCODER_STAGE_INITED ) |
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| 173 | return -1; |
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| 174 | |
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| 175 | if ( state->encode ) { |
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[2299] | 176 | if ( roar_vio_write(state->backend, ROAR_SPEEX_MAGIC, ROAR_SPEEX_MAGIC_LEN) != ROAR_SPEEX_MAGIC_LEN ) |
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| 177 | return -1; |
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| 178 | state->stage = ROAR_XCODER_STAGE_MAGIC; |
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[5495] | 179 | ROAR_DBG("roar_xcoder_speex_proc_header(*): Wrote MAGIC"); |
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[2299] | 180 | |
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| 181 | state->stage = ROAR_XCODER_STAGE_OPENING; |
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| 182 | |
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| 183 | tmp_net = ROAR_HOST2NET16(self->mode); |
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| 184 | if ( roar_vio_write(state->backend, &tmp_net, 2) != 2 ) |
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| 185 | return -1; |
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| 186 | |
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| 187 | state->stage = ROAR_XCODER_STAGE_OPENED; |
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[2924] | 188 | } else { |
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[2300] | 189 | if ( roar_vio_read(state->backend, magic, ROAR_SPEEX_MAGIC_LEN) != ROAR_SPEEX_MAGIC_LEN ) |
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| 190 | return -1; |
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| 191 | |
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| 192 | if ( memcmp(magic, ROAR_SPEEX_MAGIC, ROAR_SPEEX_MAGIC_LEN) != 0 ) |
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| 193 | return -1; |
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| 194 | |
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| 195 | state->stage = ROAR_XCODER_STAGE_MAGIC; |
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| 196 | |
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| 197 | if ( roar_vio_read(state->backend, &tmp_net, 2) != 2 ) |
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| 198 | return -1; |
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| 199 | |
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| 200 | self->mode = ROAR_NET2HOST16(tmp_net); |
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| 201 | |
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| 202 | state->stage = ROAR_XCODER_STAGE_OPENING; |
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| 203 | |
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| 204 | switch (self->mode) { |
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| 205 | case ROAR_SPEEX_MODE_NB: self->xcoder = speex_decoder_init(&speex_nb_mode); break; |
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| 206 | case ROAR_SPEEX_MODE_WB: self->xcoder = speex_decoder_init(&speex_wb_mode); break; |
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| 207 | case ROAR_SPEEX_MODE_UWB: self->xcoder = speex_decoder_init(&speex_uwb_mode); break; |
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[2966] | 208 | default: return -1; |
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[2300] | 209 | } |
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| 210 | |
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| 211 | tmp=1; |
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| 212 | speex_decoder_ctl(self->xcoder, SPEEX_SET_ENH, &tmp); |
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[2302] | 213 | tmp = state->info.pcm.rate; |
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[2315] | 214 | speex_decoder_ctl(self->xcoder, SPEEX_SET_SAMPLING_RATE, &tmp); |
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[2300] | 215 | speex_decoder_ctl(self->xcoder, SPEEX_GET_FRAME_SIZE, &(self->frame_size)); |
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| 216 | |
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[2305] | 217 | if ( self->stereo ) { |
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| 218 | memcpy(&(self->stereo_state), &stereo, sizeof(self->stereo_state)); |
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| 219 | |
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| 220 | callback.callback_id = SPEEX_INBAND_STEREO; |
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| 221 | callback.func = speex_std_stereo_request_handler; |
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| 222 | callback.data = &(self->stereo_state); |
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| 223 | |
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| 224 | speex_decoder_ctl(self->xcoder, SPEEX_SET_HANDLER, &callback); |
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| 225 | } |
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| 226 | |
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[2300] | 227 | state->stage = ROAR_XCODER_STAGE_OPENED; |
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| 228 | } |
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| 229 | |
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[2924] | 230 | // on no error... |
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| 231 | return 0; |
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| 232 | } |
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| 233 | |
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| 234 | int roar_xcoder_speex_encode (struct roar_xcoder * state, void * buf, size_t len) { |
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| 235 | struct roar_xcoder_speex * self = state->inst; |
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| 236 | int pkg_len; |
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| 237 | |
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| 238 | if (!state->encode) |
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| 239 | return -1; |
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| 240 | |
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| 241 | ROAR_DBG("roar_xcoder_speex_encode(*): Encoding..."); |
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| 242 | |
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| 243 | if ( state->stage == ROAR_XCODER_STAGE_INITED ) |
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| 244 | if ( roar_xcoder_speex_proc_header(state) == -1 ) |
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| 245 | return -1; |
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| 246 | |
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| 247 | speex_bits_reset(&(self->bits)); |
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| 248 | |
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| 249 | if ( self->stereo ) |
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| 250 | speex_encode_stereo_int((spx_int16_t *) buf, self->frame_size, &(self->bits)); |
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| 251 | |
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| 252 | speex_encode_int(self->xcoder, (spx_int16_t *) buf, &(self->bits)); |
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| 253 | |
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| 254 | pkg_len = speex_bits_write(&(self->bits), self->cc + 2, self->max_cc); |
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| 255 | |
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[5515] | 256 | self->cc[0] = (pkg_len & 0xFF00) >> 8; |
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| 257 | self->cc[1] = pkg_len & 0x00FF; |
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[2924] | 258 | |
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| 259 | if ( roar_vio_write(state->backend, self->cc, pkg_len + 2) != (pkg_len + 2) ) |
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| 260 | return -1; |
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| 261 | |
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| 262 | return 0; |
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| 263 | } |
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| 264 | |
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| 265 | // TODO: move all the init thingys into a seperate function |
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| 266 | int roar_xcoder_speex_decode (struct roar_xcoder * state, void * buf, size_t len) { |
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| 267 | struct roar_xcoder_speex * self = state->inst; |
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| 268 | uint16_t tmp_net; |
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| 269 | int pkg_len; |
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| 270 | |
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| 271 | ROAR_DBG("roar_xcoder_speex_decode(state=%p, buf=%p, len=%lu) = ?", state, buf, (unsigned long)len); |
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| 272 | |
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| 273 | if ( state->stage == ROAR_XCODER_STAGE_INITED ) |
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| 274 | if ( roar_xcoder_speex_proc_header(state) == -1 ) |
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| 275 | return -1; |
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| 276 | |
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[2311] | 277 | ROAR_DBG("roar_xcoder_speex_decode(state=%p, buf=%p, len=%lu): state->stage = %s", state, buf, (unsigned long)len, |
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| 278 | state->stage == ROAR_XCODER_STAGE_OPENED ? "OPENED" : "???" |
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| 279 | ); |
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| 280 | |
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[2300] | 281 | if ( roar_vio_read(state->backend, &tmp_net, 2) != 2 ) |
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| 282 | return -1; |
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| 283 | |
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| 284 | pkg_len = ROAR_NET2HOST16(tmp_net); |
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| 285 | |
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| 286 | if ( pkg_len > ROAR_SPEEX_MAX_CC ) |
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| 287 | return -1; |
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| 288 | |
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[2311] | 289 | ROAR_DBG("roar_xcoder_speex_decode(state=%p, buf=%p, len=%lu) = ?", state, buf, (unsigned long)len); |
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| 290 | |
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[2300] | 291 | if ( roar_vio_read(state->backend, self->cc, pkg_len) != pkg_len ) |
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| 292 | return -1; |
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| 293 | |
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| 294 | speex_bits_read_from(&(self->bits), self->cc, pkg_len); |
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| 295 | |
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| 296 | speex_decode_int(self->xcoder, &(self->bits), buf); |
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| 297 | |
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[2305] | 298 | if ( self->stereo ) { |
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| 299 | speex_decode_stereo_int(buf, self->frame_size, &(self->stereo_state)); |
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| 300 | } |
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| 301 | |
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[2311] | 302 | ROAR_DBG("roar_xcoder_speex_decode(state=%p, buf=%p, len=%lu) = 0", state, buf, (unsigned long)len); |
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[2300] | 303 | return 0; |
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[2296] | 304 | } |
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| 305 | |
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[2295] | 306 | #endif |
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| 307 | |
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| 308 | //ll |
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