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->s_buf = s->info.channels * self->frame_size * 2; |
---|
35 | self->ibuf = malloc(self->s_buf); |
---|
36 | self->obuf = malloc(self->s_buf); |
---|
37 | self->i_rest = malloc(self->s_buf); |
---|
38 | self->o_rest = malloc(self->s_buf); |
---|
39 | self->fi_rest = 0; |
---|
40 | self->fo_rest = 0; |
---|
41 | |
---|
42 | if ( !(self->ibuf && self->obuf && self->i_rest && self->o_rest) ) { |
---|
43 | if ( self->ibuf ) |
---|
44 | free(self->ibuf); |
---|
45 | |
---|
46 | if ( self->obuf ) |
---|
47 | free(self->obuf); |
---|
48 | |
---|
49 | if ( self->i_rest ) |
---|
50 | free(self->o_rest); |
---|
51 | |
---|
52 | if ( self->o_rest ) |
---|
53 | free(self->o_rest); |
---|
54 | |
---|
55 | free(self); |
---|
56 | return -1; |
---|
57 | } |
---|
58 | |
---|
59 | self->mode = celt_mode_create(s->info.rate, s->info.channels, self->frame_size, NULL); |
---|
60 | |
---|
61 | if ( !self->mode ) { |
---|
62 | free(self); |
---|
63 | return -1; |
---|
64 | } |
---|
65 | |
---|
66 | if ( s->dir == ROAR_DIR_PLAY ) { |
---|
67 | self->decoder = celt_decoder_create(self->mode); |
---|
68 | } else if ( s->dir == ROAR_DIR_MONITOR ) { |
---|
69 | self->encoder = celt_encoder_create(self->mode); |
---|
70 | } else { |
---|
71 | celt_mode_destroy(self->mode); |
---|
72 | free(self); |
---|
73 | return -1; |
---|
74 | } |
---|
75 | |
---|
76 | *inst = (CODECFILTER_USERDATA_T) self; |
---|
77 | |
---|
78 | s->info.codec = ROAR_CODEC_DEFAULT; |
---|
79 | s->info.bits = 16; // CELT hardcoded |
---|
80 | |
---|
81 | return 0; |
---|
82 | } |
---|
83 | |
---|
84 | int cf_celt_close(CODECFILTER_USERDATA_T inst) { |
---|
85 | struct codecfilter_celt_inst * self = (struct codecfilter_celt_inst *) inst; |
---|
86 | |
---|
87 | if ( !inst ) |
---|
88 | return -1; |
---|
89 | |
---|
90 | if ( self->encoder ) |
---|
91 | celt_encoder_destroy(self->encoder); |
---|
92 | |
---|
93 | if ( self->decoder ) |
---|
94 | celt_decoder_destroy(self->decoder); |
---|
95 | |
---|
96 | if ( self->mode ) |
---|
97 | celt_mode_destroy(self->mode); |
---|
98 | |
---|
99 | if ( self->ibuf ) |
---|
100 | free(self->ibuf); |
---|
101 | |
---|
102 | if ( self->obuf ) |
---|
103 | free(self->obuf); |
---|
104 | |
---|
105 | if ( self->i_rest ) |
---|
106 | free(self->i_rest); |
---|
107 | |
---|
108 | if ( self->o_rest ) |
---|
109 | free(self->o_rest); |
---|
110 | |
---|
111 | free(inst); |
---|
112 | return 0; |
---|
113 | } |
---|
114 | |
---|
115 | int cf_celt_read(CODECFILTER_USERDATA_T inst, char * buf, int len) { |
---|
116 | struct codecfilter_celt_inst * self = (struct codecfilter_celt_inst *) inst; |
---|
117 | int r = 0; |
---|
118 | uint16_t fs; |
---|
119 | char * cbuf; |
---|
120 | |
---|
121 | // printf("buf=%p, len=%i\n", buf, len); |
---|
122 | |
---|
123 | if ( self->fi_rest ) { |
---|
124 | memcpy(buf, self->i_rest, self->fi_rest); |
---|
125 | r += self->fi_rest; |
---|
126 | self->fi_rest = 0; |
---|
127 | } |
---|
128 | |
---|
129 | while ( r <= (len - self->s_buf) ) { |
---|
130 | if ( stream_vio_s_read(self->stream, &fs, 2) != 2 ) |
---|
131 | break; |
---|
132 | |
---|
133 | fs = ROAR_NET2HOST16(fs); |
---|
134 | |
---|
135 | if ( stream_vio_s_read(self->stream, self->ibuf, fs) != fs ) |
---|
136 | break; |
---|
137 | |
---|
138 | cbuf = buf + r; |
---|
139 | |
---|
140 | // printf("buf=%p, r=%i // cbuf=%p\n", buf, r, cbuf); |
---|
141 | if ( celt_decode(self->decoder, (unsigned char *) self->ibuf, fs, (celt_int16_t *) cbuf) < 0 ) |
---|
142 | break; |
---|
143 | |
---|
144 | r += self->s_buf; |
---|
145 | } |
---|
146 | |
---|
147 | if ( r < len ) { |
---|
148 | // printf("r < len!\n"); |
---|
149 | if ( stream_vio_s_read(self->stream, &fs, 2) == 2 ) { |
---|
150 | fs = ROAR_NET2HOST16(fs); |
---|
151 | // printf("next: fs=%i\n", fs); |
---|
152 | if ( stream_vio_s_read(self->stream, self->ibuf, fs) == fs ) { |
---|
153 | // printf("got data!\n"); |
---|
154 | if ( celt_decode(self->decoder, (unsigned char *) self->ibuf, fs, (celt_int16_t *) self->obuf) >= 0 ) { |
---|
155 | // printf("{ // decode rest\n"); |
---|
156 | // printf(" r=%i // need %i Bytes\n", r, len - r); |
---|
157 | // printf(" memcpy(buf+%i, self->obuf, %i) = ?\n", r, len - r); |
---|
158 | memcpy(buf+r, self->obuf, len - r); |
---|
159 | self->fi_rest = self->s_buf + r - len; |
---|
160 | memcpy(self->i_rest, self->obuf + len - r, self->fi_rest); |
---|
161 | // printf(" len=%i, r=%i, fi_rest=%i, s_buf=%i\n", len, r, self->fi_rest, self->s_buf); |
---|
162 | r = len; |
---|
163 | // printf("}\n"); |
---|
164 | } |
---|
165 | } |
---|
166 | } |
---|
167 | } |
---|
168 | |
---|
169 | ROAR_DBG("cf_celt_read(inst=%p, buf=%p, len=%i) = %i", inst, buf, len, r); |
---|
170 | return r; |
---|
171 | } |
---|
172 | |
---|
173 | #define BS (ROAR_STREAM(self->stream)->info.channels * 64) |
---|
174 | int cf_celt_write(CODECFILTER_USERDATA_T inst, char * buf, int len) { |
---|
175 | struct codecfilter_celt_inst * self = (struct codecfilter_celt_inst *) inst; |
---|
176 | int have = 0; |
---|
177 | int org_len = len; |
---|
178 | int diff; |
---|
179 | int fs2 = self->frame_size * 2 * ROAR_STREAM(self->stream)->info.channels; |
---|
180 | uint16_t pkglen_net, pkglen; |
---|
181 | unsigned char cbits[BS+2]; |
---|
182 | |
---|
183 | if ( (self->fo_rest + len) > fs2 ) { |
---|
184 | if ( self->fo_rest ) { |
---|
185 | memcpy(self->obuf, self->o_rest, self->fo_rest); |
---|
186 | have = self->fo_rest; |
---|
187 | self->fo_rest = 0; |
---|
188 | } |
---|
189 | |
---|
190 | memcpy(self->obuf+have, buf, (diff=fs2-have)); |
---|
191 | buf += diff; |
---|
192 | len -= diff; |
---|
193 | |
---|
194 | pkglen = celt_encode(self->encoder, (celt_int16_t *) self->obuf, cbits+2, BS); |
---|
195 | pkglen_net = ROAR_HOST2NET16(pkglen); |
---|
196 | *(uint16_t*)cbits = pkglen_net; |
---|
197 | |
---|
198 | if ( stream_vio_s_write(self->stream, cbits, pkglen+2) == -1 ) |
---|
199 | return -1; |
---|
200 | |
---|
201 | while (len >= fs2) { |
---|
202 | pkglen = celt_encode(self->encoder, (celt_int16_t *) buf, cbits+2, BS); |
---|
203 | pkglen_net = ROAR_HOST2NET16(pkglen); |
---|
204 | *(uint16_t*)cbits = pkglen_net; |
---|
205 | |
---|
206 | if ( stream_vio_s_write(self->stream, cbits, pkglen+2) == -1 ) |
---|
207 | return -1; |
---|
208 | len -= fs2; |
---|
209 | buf += fs2; |
---|
210 | } |
---|
211 | } |
---|
212 | |
---|
213 | if ( len ) { |
---|
214 | memcpy(self->o_rest + self->fo_rest, buf, len); |
---|
215 | self->fo_rest += len; |
---|
216 | len = 0; |
---|
217 | } |
---|
218 | |
---|
219 | return org_len; |
---|
220 | } |
---|
221 | |
---|
222 | #endif |
---|
223 | //ll |
---|