1 | //codecfilter_celt.c: |
---|
2 | |
---|
3 | #include "roard.h" |
---|
4 | #ifdef ROAR_HAVE_LIBCELT |
---|
5 | |
---|
6 | int cf_celt_open(CODECFILTER_USERDATA_T * inst, int codec, |
---|
7 | struct roar_stream_server * info, |
---|
8 | struct roar_codecfilter * filter) { |
---|
9 | struct codecfilter_celt_inst * self = malloc(sizeof(struct codecfilter_celt_inst)); |
---|
10 | struct roar_stream * s = ROAR_STREAM(info); |
---|
11 | |
---|
12 | if ( !self ) |
---|
13 | return -1; |
---|
14 | |
---|
15 | /* |
---|
16 | CELTMode * mode; |
---|
17 | CELTEncoder * encoder; |
---|
18 | CELTDecoder * decoder; |
---|
19 | int frame_size; |
---|
20 | int lookahead; |
---|
21 | int out_size; |
---|
22 | char * ibuf; |
---|
23 | char * obuf; |
---|
24 | char * rest; |
---|
25 | int s_buf; |
---|
26 | int f_rest; /-* how much is in rest? *-/ |
---|
27 | */ |
---|
28 | |
---|
29 | self->stream = info; |
---|
30 | self->frame_size = 256; |
---|
31 | self->lookahead = self->frame_size; |
---|
32 | self->encoder = NULL; |
---|
33 | self->decoder = NULL; |
---|
34 | self->opened = 0; |
---|
35 | self->s_buf = s->info.channels * self->frame_size * 2; |
---|
36 | self->ibuf = malloc(self->s_buf); |
---|
37 | self->obuf = malloc(self->s_buf); |
---|
38 | self->i_rest = malloc(self->s_buf); |
---|
39 | self->o_rest = malloc(self->s_buf); |
---|
40 | self->fi_rest = 0; |
---|
41 | self->fo_rest = 0; |
---|
42 | |
---|
43 | if ( !(self->ibuf && self->obuf && self->i_rest && self->o_rest) ) { |
---|
44 | if ( self->ibuf ) |
---|
45 | free(self->ibuf); |
---|
46 | |
---|
47 | if ( self->obuf ) |
---|
48 | free(self->obuf); |
---|
49 | |
---|
50 | if ( self->i_rest ) |
---|
51 | free(self->o_rest); |
---|
52 | |
---|
53 | if ( self->o_rest ) |
---|
54 | free(self->o_rest); |
---|
55 | |
---|
56 | free(self); |
---|
57 | return -1; |
---|
58 | } |
---|
59 | |
---|
60 | self->mode = celt_mode_create(s->info.rate, s->info.channels, self->frame_size, NULL); |
---|
61 | |
---|
62 | if ( !self->mode ) { |
---|
63 | free(self); |
---|
64 | return -1; |
---|
65 | } |
---|
66 | |
---|
67 | if ( s->dir == ROAR_DIR_PLAY ) { |
---|
68 | self->decoder = celt_decoder_create(self->mode); |
---|
69 | } else if ( s->dir == ROAR_DIR_MONITOR || s->dir == ROAR_DIR_OUTPUT ) { |
---|
70 | self->encoder = celt_encoder_create(self->mode); |
---|
71 | } else { |
---|
72 | celt_mode_destroy(self->mode); |
---|
73 | free(self); |
---|
74 | return -1; |
---|
75 | } |
---|
76 | |
---|
77 | *inst = (CODECFILTER_USERDATA_T) self; |
---|
78 | |
---|
79 | s->info.codec = ROAR_CODEC_DEFAULT; |
---|
80 | s->info.bits = 16; // CELT hardcoded |
---|
81 | |
---|
82 | return 0; |
---|
83 | } |
---|
84 | |
---|
85 | int cf_celt_close(CODECFILTER_USERDATA_T inst) { |
---|
86 | struct codecfilter_celt_inst * self = (struct codecfilter_celt_inst *) inst; |
---|
87 | |
---|
88 | if ( !inst ) |
---|
89 | return -1; |
---|
90 | |
---|
91 | if ( self->encoder ) |
---|
92 | celt_encoder_destroy(self->encoder); |
---|
93 | |
---|
94 | if ( self->decoder ) |
---|
95 | celt_decoder_destroy(self->decoder); |
---|
96 | |
---|
97 | if ( self->mode ) |
---|
98 | celt_mode_destroy(self->mode); |
---|
99 | |
---|
100 | if ( self->ibuf ) |
---|
101 | free(self->ibuf); |
---|
102 | |
---|
103 | if ( self->obuf ) |
---|
104 | free(self->obuf); |
---|
105 | |
---|
106 | if ( self->i_rest ) |
---|
107 | free(self->i_rest); |
---|
108 | |
---|
109 | if ( self->o_rest ) |
---|
110 | free(self->o_rest); |
---|
111 | |
---|
112 | free(inst); |
---|
113 | return 0; |
---|
114 | } |
---|
115 | |
---|
116 | int cf_celt_read(CODECFILTER_USERDATA_T inst, char * buf, int len) { |
---|
117 | struct codecfilter_celt_inst * self = (struct codecfilter_celt_inst *) inst; |
---|
118 | int r = 0; |
---|
119 | uint16_t fs; |
---|
120 | char * cbuf; |
---|
121 | char magic[ROAR_CELT_MAGIC_LEN]; |
---|
122 | |
---|
123 | // printf("buf=%p, len=%i\n", buf, len); |
---|
124 | |
---|
125 | if ( !self->opened ) { |
---|
126 | errno = ENOSYS; |
---|
127 | if ( stream_vio_s_read(self->stream, magic, ROAR_CELT_MAGIC_LEN) != ROAR_CELT_MAGIC_LEN ) |
---|
128 | return -1; |
---|
129 | if ( memcmp(magic, ROAR_CELT_MAGIC, ROAR_CELT_MAGIC_LEN) != 0 ) |
---|
130 | return -1; |
---|
131 | |
---|
132 | errno = 0; |
---|
133 | self->opened = 1; |
---|
134 | } |
---|
135 | |
---|
136 | if ( self->fi_rest ) { |
---|
137 | memcpy(buf, self->i_rest, self->fi_rest); |
---|
138 | r += self->fi_rest; |
---|
139 | self->fi_rest = 0; |
---|
140 | } |
---|
141 | |
---|
142 | while ( r <= (len - self->s_buf) ) { |
---|
143 | if ( stream_vio_s_read(self->stream, &fs, 2) != 2 ) |
---|
144 | break; |
---|
145 | |
---|
146 | fs = ROAR_NET2HOST16(fs); |
---|
147 | |
---|
148 | if ( fs > self->s_buf ) |
---|
149 | return -1; |
---|
150 | |
---|
151 | if ( stream_vio_s_read(self->stream, self->ibuf, fs) != fs ) |
---|
152 | return -1; |
---|
153 | |
---|
154 | cbuf = buf + r; |
---|
155 | |
---|
156 | // printf("buf=%p, r=%i // cbuf=%p\n", buf, r, cbuf); |
---|
157 | if ( celt_decode(self->decoder, (unsigned char *) self->ibuf, fs, (celt_int16_t *) cbuf) < 0 ) |
---|
158 | return -1; |
---|
159 | |
---|
160 | r += self->s_buf; |
---|
161 | } |
---|
162 | |
---|
163 | if ( r < len ) { |
---|
164 | // printf("r < len!\n"); |
---|
165 | if ( stream_vio_s_read(self->stream, &fs, 2) == 2 ) { |
---|
166 | fs = ROAR_NET2HOST16(fs); |
---|
167 | // printf("next: fs=%i\n", fs); |
---|
168 | if ( fs > self->s_buf ) |
---|
169 | return -1; |
---|
170 | if ( stream_vio_s_read(self->stream, self->ibuf, fs) == fs ) { |
---|
171 | // printf("got data!\n"); |
---|
172 | if ( celt_decode(self->decoder, (unsigned char *) self->ibuf, fs, (celt_int16_t *) self->obuf) >= 0 ) { |
---|
173 | // printf("{ // decode rest\n"); |
---|
174 | // printf(" r=%i // need %i Bytes\n", r, len - r); |
---|
175 | // printf(" memcpy(buf+%i, self->obuf, %i) = ?\n", r, len - r); |
---|
176 | memcpy(buf+r, self->obuf, len - r); |
---|
177 | self->fi_rest = self->s_buf + r - len; |
---|
178 | memcpy(self->i_rest, self->obuf + len - r, self->fi_rest); |
---|
179 | // printf(" len=%i, r=%i, fi_rest=%i, s_buf=%i\n", len, r, self->fi_rest, self->s_buf); |
---|
180 | r = len; |
---|
181 | // printf("}\n"); |
---|
182 | } |
---|
183 | } |
---|
184 | } |
---|
185 | } |
---|
186 | |
---|
187 | ROAR_DBG("cf_celt_read(inst=%p, buf=%p, len=%i) = %i", inst, buf, len, r); |
---|
188 | return r; |
---|
189 | } |
---|
190 | |
---|
191 | #define BS (ROAR_STREAM(self->stream)->info.channels * 64) |
---|
192 | int cf_celt_write(CODECFILTER_USERDATA_T inst, char * buf, int len) { |
---|
193 | struct codecfilter_celt_inst * self = (struct codecfilter_celt_inst *) inst; |
---|
194 | int have = 0; |
---|
195 | int org_len = len; |
---|
196 | int diff; |
---|
197 | int fs2 = self->frame_size * 2 * ROAR_STREAM(self->stream)->info.channels; |
---|
198 | uint16_t pkglen_net, pkglen; |
---|
199 | unsigned char cbits[BS+2]; |
---|
200 | |
---|
201 | if ( !self->opened ) { |
---|
202 | if ( stream_vio_s_write(self->stream, ROAR_CELT_MAGIC, ROAR_CELT_MAGIC_LEN) != ROAR_CELT_MAGIC_LEN ) |
---|
203 | return -1; |
---|
204 | self->opened = 1; |
---|
205 | } |
---|
206 | |
---|
207 | if ( (self->fo_rest + len) > fs2 ) { |
---|
208 | if ( self->fo_rest ) { |
---|
209 | memcpy(self->obuf, self->o_rest, self->fo_rest); |
---|
210 | have = self->fo_rest; |
---|
211 | self->fo_rest = 0; |
---|
212 | } |
---|
213 | |
---|
214 | memcpy(self->obuf+have, buf, (diff=fs2-have)); |
---|
215 | buf += diff; |
---|
216 | len -= diff; |
---|
217 | |
---|
218 | pkglen = celt_encode(self->encoder, (celt_int16_t *) self->obuf, cbits+2, BS); |
---|
219 | pkglen_net = ROAR_HOST2NET16(pkglen); |
---|
220 | *(uint16_t*)cbits = pkglen_net; |
---|
221 | |
---|
222 | if ( stream_vio_s_write(self->stream, cbits, pkglen+2) == -1 ) |
---|
223 | return -1; |
---|
224 | |
---|
225 | while (len >= fs2) { |
---|
226 | pkglen = celt_encode(self->encoder, (celt_int16_t *) buf, cbits+2, BS); |
---|
227 | pkglen_net = ROAR_HOST2NET16(pkglen); |
---|
228 | *(uint16_t*)cbits = pkglen_net; |
---|
229 | |
---|
230 | if ( stream_vio_s_write(self->stream, cbits, pkglen+2) == -1 ) |
---|
231 | return -1; |
---|
232 | len -= fs2; |
---|
233 | buf += fs2; |
---|
234 | } |
---|
235 | } |
---|
236 | |
---|
237 | if ( len ) { |
---|
238 | memcpy(self->o_rest + self->fo_rest, buf, len); |
---|
239 | self->fo_rest += len; |
---|
240 | len = 0; |
---|
241 | } |
---|
242 | |
---|
243 | return org_len; |
---|
244 | } |
---|
245 | |
---|
246 | #endif |
---|
247 | //ll |
---|