[324] | 1 | //codecfilter_celt.c: |
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| 2 | |
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[668] | 3 | /* |
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| 4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2008 |
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| 5 | * |
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| 6 | * This file is part of roard 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 | * RoarAudio 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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| 21 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
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| 22 | * |
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| 23 | */ |
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| 24 | |
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[324] | 25 | #include "roard.h" |
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[361] | 26 | #ifdef ROAR_HAVE_LIBCELT |
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[324] | 27 | |
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| 28 | int cf_celt_open(CODECFILTER_USERDATA_T * inst, int codec, |
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| 29 | struct roar_stream_server * info, |
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| 30 | struct roar_codecfilter * filter) { |
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| 31 | struct codecfilter_celt_inst * self = malloc(sizeof(struct codecfilter_celt_inst)); |
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[609] | 32 | struct roar_stream * s = ROAR_STREAM(info); |
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[324] | 33 | |
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| 34 | if ( !self ) |
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| 35 | return -1; |
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| 36 | |
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[325] | 37 | /* |
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| 38 | CELTMode * mode; |
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| 39 | CELTEncoder * encoder; |
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| 40 | CELTDecoder * decoder; |
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| 41 | int frame_size; |
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| 42 | int lookahead; |
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| 43 | int out_size; |
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| 44 | char * ibuf; |
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| 45 | char * obuf; |
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| 46 | char * rest; |
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| 47 | int s_buf; |
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| 48 | int f_rest; /-* how much is in rest? *-/ |
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| 49 | */ |
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| 50 | |
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[324] | 51 | self->stream = info; |
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[325] | 52 | self->frame_size = 256; |
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| 53 | self->lookahead = self->frame_size; |
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| 54 | self->encoder = NULL; |
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| 55 | self->decoder = NULL; |
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[635] | 56 | self->opened = 0; |
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[331] | 57 | self->s_buf = s->info.channels * self->frame_size * 2; |
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[326] | 58 | self->ibuf = malloc(self->s_buf); |
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| 59 | self->obuf = malloc(self->s_buf); |
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[331] | 60 | self->i_rest = malloc(self->s_buf); |
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| 61 | self->o_rest = malloc(self->s_buf); |
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| 62 | self->fi_rest = 0; |
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| 63 | self->fo_rest = 0; |
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[326] | 64 | |
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[331] | 65 | if ( !(self->ibuf && self->obuf && self->i_rest && self->o_rest) ) { |
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[326] | 66 | if ( self->ibuf ) |
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| 67 | free(self->ibuf); |
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| 68 | |
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| 69 | if ( self->obuf ) |
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| 70 | free(self->obuf); |
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| 71 | |
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[331] | 72 | if ( self->i_rest ) |
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| 73 | free(self->o_rest); |
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| 74 | |
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| 75 | if ( self->o_rest ) |
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| 76 | free(self->o_rest); |
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[326] | 77 | |
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| 78 | free(self); |
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| 79 | return -1; |
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| 80 | } |
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| 81 | |
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[350] | 82 | self->mode = celt_mode_create(s->info.rate, s->info.channels, self->frame_size, NULL); |
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[325] | 83 | |
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| 84 | if ( !self->mode ) { |
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| 85 | free(self); |
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| 86 | return -1; |
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| 87 | } |
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| 88 | |
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| 89 | if ( s->dir == ROAR_DIR_PLAY ) { |
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| 90 | self->decoder = celt_decoder_create(self->mode); |
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[634] | 91 | } else if ( s->dir == ROAR_DIR_MONITOR || s->dir == ROAR_DIR_OUTPUT ) { |
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[325] | 92 | self->encoder = celt_encoder_create(self->mode); |
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| 93 | } else { |
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| 94 | celt_mode_destroy(self->mode); |
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| 95 | free(self); |
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| 96 | return -1; |
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| 97 | } |
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[324] | 98 | |
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| 99 | *inst = (CODECFILTER_USERDATA_T) self; |
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| 100 | |
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[326] | 101 | s->info.codec = ROAR_CODEC_DEFAULT; |
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| 102 | s->info.bits = 16; // CELT hardcoded |
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[324] | 103 | |
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| 104 | return 0; |
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| 105 | } |
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| 106 | |
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| 107 | int cf_celt_close(CODECFILTER_USERDATA_T inst) { |
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| 108 | struct codecfilter_celt_inst * self = (struct codecfilter_celt_inst *) inst; |
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| 109 | |
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| 110 | if ( !inst ) |
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| 111 | return -1; |
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| 112 | |
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[325] | 113 | if ( self->encoder ) |
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| 114 | celt_encoder_destroy(self->encoder); |
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| 115 | |
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| 116 | if ( self->decoder ) |
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| 117 | celt_decoder_destroy(self->decoder); |
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| 118 | |
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| 119 | if ( self->mode ) |
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| 120 | celt_mode_destroy(self->mode); |
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| 121 | |
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[327] | 122 | if ( self->ibuf ) |
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| 123 | free(self->ibuf); |
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| 124 | |
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| 125 | if ( self->obuf ) |
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| 126 | free(self->obuf); |
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| 127 | |
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[331] | 128 | if ( self->i_rest ) |
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| 129 | free(self->i_rest); |
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| 130 | |
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| 131 | if ( self->o_rest ) |
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| 132 | free(self->o_rest); |
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[327] | 133 | |
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[324] | 134 | free(inst); |
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| 135 | return 0; |
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| 136 | } |
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| 137 | |
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| 138 | int cf_celt_read(CODECFILTER_USERDATA_T inst, char * buf, int len) { |
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| 139 | struct codecfilter_celt_inst * self = (struct codecfilter_celt_inst *) inst; |
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[328] | 140 | int r = 0; |
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| 141 | uint16_t fs; |
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[331] | 142 | char * cbuf; |
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[635] | 143 | char magic[ROAR_CELT_MAGIC_LEN]; |
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[331] | 144 | |
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| 145 | // printf("buf=%p, len=%i\n", buf, len); |
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[324] | 146 | |
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[635] | 147 | if ( !self->opened ) { |
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| 148 | errno = ENOSYS; |
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| 149 | if ( stream_vio_s_read(self->stream, magic, ROAR_CELT_MAGIC_LEN) != ROAR_CELT_MAGIC_LEN ) |
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| 150 | return -1; |
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| 151 | if ( memcmp(magic, ROAR_CELT_MAGIC, ROAR_CELT_MAGIC_LEN) != 0 ) |
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| 152 | return -1; |
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| 153 | |
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| 154 | errno = 0; |
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| 155 | self->opened = 1; |
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| 156 | } |
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| 157 | |
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[332] | 158 | if ( self->fi_rest ) { |
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| 159 | memcpy(buf, self->i_rest, self->fi_rest); |
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| 160 | r += self->fi_rest; |
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| 161 | self->fi_rest = 0; |
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| 162 | } |
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| 163 | |
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[328] | 164 | while ( r <= (len - self->s_buf) ) { |
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[608] | 165 | if ( stream_vio_s_read(self->stream, &fs, 2) != 2 ) |
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[328] | 166 | break; |
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| 167 | |
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| 168 | fs = ROAR_NET2HOST16(fs); |
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| 169 | |
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[637] | 170 | if ( fs > self->s_buf ) |
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[638] | 171 | return -1; |
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[637] | 172 | |
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[608] | 173 | if ( stream_vio_s_read(self->stream, self->ibuf, fs) != fs ) |
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[638] | 174 | return -1; |
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[328] | 175 | |
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[331] | 176 | cbuf = buf + r; |
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| 177 | |
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[332] | 178 | // printf("buf=%p, r=%i // cbuf=%p\n", buf, r, cbuf); |
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[331] | 179 | if ( celt_decode(self->decoder, (unsigned char *) self->ibuf, fs, (celt_int16_t *) cbuf) < 0 ) |
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[638] | 180 | return -1; |
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[328] | 181 | |
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| 182 | r += self->s_buf; |
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| 183 | } |
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| 184 | |
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[332] | 185 | if ( r < len ) { |
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| 186 | // printf("r < len!\n"); |
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[608] | 187 | if ( stream_vio_s_read(self->stream, &fs, 2) == 2 ) { |
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[332] | 188 | fs = ROAR_NET2HOST16(fs); |
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| 189 | // printf("next: fs=%i\n", fs); |
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[638] | 190 | if ( fs > self->s_buf ) |
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| 191 | return -1; |
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[608] | 192 | if ( stream_vio_s_read(self->stream, self->ibuf, fs) == fs ) { |
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[332] | 193 | // printf("got data!\n"); |
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| 194 | if ( celt_decode(self->decoder, (unsigned char *) self->ibuf, fs, (celt_int16_t *) self->obuf) >= 0 ) { |
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| 195 | // printf("{ // decode rest\n"); |
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| 196 | // printf(" r=%i // need %i Bytes\n", r, len - r); |
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| 197 | // printf(" memcpy(buf+%i, self->obuf, %i) = ?\n", r, len - r); |
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| 198 | memcpy(buf+r, self->obuf, len - r); |
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| 199 | self->fi_rest = self->s_buf + r - len; |
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| 200 | memcpy(self->i_rest, self->obuf + len - r, self->fi_rest); |
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| 201 | // printf(" len=%i, r=%i, fi_rest=%i, s_buf=%i\n", len, r, self->fi_rest, self->s_buf); |
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| 202 | r = len; |
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| 203 | // printf("}\n"); |
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| 204 | } |
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| 205 | } |
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| 206 | } |
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| 207 | } |
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| 208 | |
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[333] | 209 | ROAR_DBG("cf_celt_read(inst=%p, buf=%p, len=%i) = %i", inst, buf, len, r); |
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[328] | 210 | return r; |
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[324] | 211 | } |
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| 212 | |
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[611] | 213 | #define BS (ROAR_STREAM(self->stream)->info.channels * 64) |
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[324] | 214 | int cf_celt_write(CODECFILTER_USERDATA_T inst, char * buf, int len) { |
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| 215 | struct codecfilter_celt_inst * self = (struct codecfilter_celt_inst *) inst; |
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[611] | 216 | int have = 0; |
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| 217 | int org_len = len; |
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| 218 | int diff; |
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| 219 | int fs2 = self->frame_size * 2 * ROAR_STREAM(self->stream)->info.channels; |
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| 220 | uint16_t pkglen_net, pkglen; |
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| 221 | unsigned char cbits[BS+2]; |
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[324] | 222 | |
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[639] | 223 | if ( !self->opened ) { |
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| 224 | if ( stream_vio_s_write(self->stream, ROAR_CELT_MAGIC, ROAR_CELT_MAGIC_LEN) != ROAR_CELT_MAGIC_LEN ) |
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| 225 | return -1; |
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| 226 | self->opened = 1; |
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| 227 | } |
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| 228 | |
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[611] | 229 | if ( (self->fo_rest + len) > fs2 ) { |
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| 230 | if ( self->fo_rest ) { |
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| 231 | memcpy(self->obuf, self->o_rest, self->fo_rest); |
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| 232 | have = self->fo_rest; |
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| 233 | self->fo_rest = 0; |
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| 234 | } |
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| 235 | |
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| 236 | memcpy(self->obuf+have, buf, (diff=fs2-have)); |
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| 237 | buf += diff; |
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| 238 | len -= diff; |
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| 239 | |
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[967] | 240 | pkglen = celt_encode(self->encoder, (celt_int16_t *) self->obuf, NULL, cbits+2, BS); |
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[611] | 241 | pkglen_net = ROAR_HOST2NET16(pkglen); |
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| 242 | *(uint16_t*)cbits = pkglen_net; |
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| 243 | |
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| 244 | if ( stream_vio_s_write(self->stream, cbits, pkglen+2) == -1 ) |
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| 245 | return -1; |
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| 246 | |
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| 247 | while (len >= fs2) { |
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[967] | 248 | pkglen = celt_encode(self->encoder, (celt_int16_t *) buf, NULL, cbits+2, BS); |
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[611] | 249 | pkglen_net = ROAR_HOST2NET16(pkglen); |
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| 250 | *(uint16_t*)cbits = pkglen_net; |
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| 251 | |
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| 252 | if ( stream_vio_s_write(self->stream, cbits, pkglen+2) == -1 ) |
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| 253 | return -1; |
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| 254 | len -= fs2; |
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| 255 | buf += fs2; |
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| 256 | } |
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| 257 | } |
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| 258 | |
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| 259 | if ( len ) { |
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| 260 | memcpy(self->o_rest + self->fo_rest, buf, len); |
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| 261 | self->fo_rest += len; |
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| 262 | len = 0; |
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| 263 | } |
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| 264 | |
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| 265 | return org_len; |
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[324] | 266 | } |
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| 267 | |
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[1144] | 268 | int cf_celt_delay(CODECFILTER_USERDATA_T inst, uint_least32_t * delay) { |
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| 269 | struct codecfilter_celt_inst * self = (struct codecfilter_celt_inst *) inst; |
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| 270 | |
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| 271 | ROAR_DBG("cf_celt_delay(*) = ?"); |
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| 272 | |
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| 273 | if ( self == NULL ) { |
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| 274 | *delay = (1000000 * 256) / ROAR_RATE_DEFAULT; |
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| 275 | return 0; |
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| 276 | } else { |
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| 277 | *delay = (1000000 * self->frame_size) / ROAR_STREAM(self->stream)->info.rate; |
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| 278 | ROAR_DBG("cf_celt_delay(*): frame_size=%i, rate=%i, *delay=%i", |
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| 279 | self->frame_size, ROAR_STREAM(self->stream)->info.rate, *delay); |
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| 280 | return 0; |
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| 281 | } |
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| 282 | |
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| 283 | return -1; |
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| 284 | } |
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| 285 | |
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[361] | 286 | #endif |
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[324] | 287 | //ll |
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