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Prepare new maemo release
[maemo-rb.git] / apps / plugins / mp3_encoder.c
blob83e35481a2cffc8619c92c4c02d97296c960a640
1 /* Shine is an MP3 encoder
2 * Copyright (C) 1999-2000 Gabriel Bouvigne
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 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 * Library General Public License for more details. */
13
14 #include <inttypes.h>
15 #include "plugin.h"
16
17
18 #define MAX_SAMP_PER_FRAME 1152
19 #define SAMPL2 576
20 #define SBLIMIT 32
21 #define HTN 16
22 #define putlong(c, s) if(s+sz <= 32) { cc = (cc << s) | c; sz+= s; } \
23 else { putbits(cc, sz); cc = c; sz = s; }
24
25 enum e_byte_order { order_unknown, order_bigEndian, order_littleEndian };
26
27 typedef struct {
28 int type; /* 0=(MPEG2 - 22.05,24,16kHz) 1=(MPEG1 - 44.1,48,32kHz) */
29 int mode; /* 0=stereo, 1=jstereo, 2=dual, 3=mono */
30 int padding;
31 long bitr_id;
32 int smpl_id;
33 uint16_t bitrate;
34 uint8_t num_bands;
35 } mpeg_t;
36
37 /* Side information */
38 typedef struct {
39 uint32_t part2_3_length;
40 int count1; /* number of 0-1-quadruples */
41 uint32_t global_gain;
42 uint32_t table_select[4];
43 uint32_t address1;
44 uint32_t address2;
45 uint32_t address3;
46 long quantStep;
47 long additStep;
48 uint32_t max_val;
49 uint8_t region_0_1;
50 } side_info_t;
51
52 typedef struct {
53 enum e_byte_order byte_order;
54 side_info_t cod_info[2][2];
55 mpeg_t mpg;
56 long frac_per_frame;
57 long byte_per_frame;
58 long slot_lag;
59 int sideinfo_len;
60 int mean_bits;
61 int ResvSize;
62 int channels;
63 int granules;
64 int smpl_per_frm;
65 uint16_t samplerate;
66 } config_t;
67
68 typedef struct {
69 int bitpos; /* current bitpos for writing */
70 uint32_t bbuf[263];
71 } BF_Data;
72
73 struct huffcodetab {
74 const uint8_t len; /* max. index */
75 const uint8_t const *table; /* pointer to array[len][len] */
76 const uint8_t const *hlen; /* pointer to array[len][len] */
77 };
78
79 struct huffcodebig {
80 const uint8_t len; /* max. index */
81 const uint8_t linbits; /* number of linbits */
82 const uint16_t linmax; /* max number stored in linbits */
83 };
84
85 #define shft4(x) ((x + 8) >> 4)
86 #define shft9(x) ((x + 256) >> 9)
87 #define shft13(x) ((x + 4096) >> 13)
88 #define shft15(x) ((x + 16384) >> 15)
89 #define shft16(x) ((x + 32768) >> 16)
90 #define shft_n(x,n) ((x) >> n)
91 #define SQRT 724 /* sqrt(2) * 512 */
92
93 static short mfbuf [2*(1152+512)] IBSS_ATTR; /* 6656 Bytes */
94 static int sb_data [2][2][18][SBLIMIT] IBSS_ATTR; /* 9216 Bytes */
95 static int mdct_freq [SAMPL2] IBSS_ATTR; /* 2304 Bytes */
96 static char mdct_sign [SAMPL2] IBSS_ATTR; /* 576 Bytes */
97 static short enc_data [SAMPL2] IBSS_ATTR; /* 1152 Bytes */
98 static BF_Data CodedData IBSS_ATTR; /* 1056 Bytes */
99
100 static const uint16_t sfBand[6][23] ICONST_ATTR;
101 static const uint16_t const *scalefac IBSS_ATTR;
102
103 static const int16_t ca [8] ICONST_ATTR; /* 16 Bytes */
104 static const uint16_t cs [8] ICONST_ATTR; /* 16 Bytes */
105 static const int16_t cx [9] ICONST_ATTR; /* 18 Bytes */
106 static const int16_t win [18][4] ICONST_ATTR; /* 144 Bytes */
107 static const int16_t enwindow [15*27+24] ICONST_ATTR; /* 862 Bytes */
108 static const uint16_t int2idx [4096] ICONST_ATTR; /* 8192 Bytes */
109 static const uint8_t ht_count[2][2][16] ICONST_ATTR; /* 64 Bytes */
110 static const uint32_t tab01 [ 16] ICONST_ATTR; /* 64 Bytes */
111 static const uint32_t tab23 [ 9] ICONST_ATTR; /* 36 Bytes */
112 static const uint32_t tab56 [ 16] ICONST_ATTR; /* 64 Bytes */
113 static const uint32_t tab1315 [256] ICONST_ATTR; /* 1024 Bytes */
114 static const uint32_t tab1624 [256] ICONST_ATTR; /* 1024 Bytes */
115 static const uint32_t tab789 [ 36] ICONST_ATTR; /* 144 Bytes */
116 static const uint32_t tabABC [ 64] ICONST_ATTR; /* 256 Bytes */
117 static const uint8_t t1HB [ 4] ICONST_ATTR;
118 static const uint8_t t2HB [ 9] ICONST_ATTR;
119 static const uint8_t t3HB [ 9] ICONST_ATTR;
120 static const uint8_t t5HB [ 16] ICONST_ATTR;
121 static const uint8_t t6HB [ 16] ICONST_ATTR;
122 static const uint8_t t7HB [ 36] ICONST_ATTR;
123 static const uint8_t t8HB [ 36] ICONST_ATTR;
124 static const uint8_t t9HB [ 36] ICONST_ATTR;
125 static const uint8_t t10HB [ 64] ICONST_ATTR;
126 static const uint8_t t11HB [ 64] ICONST_ATTR;
127 static const uint8_t t12HB [ 64] ICONST_ATTR;
128 static const uint8_t t13HB [256] ICONST_ATTR;
129 static const uint8_t t15HB [256] ICONST_ATTR;
130 static const uint16_t t16HB [256] ICONST_ATTR;
131 static const uint16_t t24HB [256] ICONST_ATTR;
132 static const uint8_t t1l [ 8] ICONST_ATTR;
133 static const uint8_t t2l [ 9] ICONST_ATTR;
134 static const uint8_t t3l [ 9] ICONST_ATTR;
135 static const uint8_t t5l [ 16] ICONST_ATTR;
136 static const uint8_t t6l [ 16] ICONST_ATTR;
137 static const uint8_t t7l [ 36] ICONST_ATTR;
138 static const uint8_t t8l [ 36] ICONST_ATTR;
139 static const uint8_t t9l [ 36] ICONST_ATTR;
140 static const uint8_t t10l [ 64] ICONST_ATTR;
141 static const uint8_t t11l [ 64] ICONST_ATTR;
142 static const uint8_t t12l [ 64] ICONST_ATTR;
143 static const uint8_t t13l [256] ICONST_ATTR;
144 static const uint8_t t15l [256] ICONST_ATTR;
145 static const uint8_t t16l [256] ICONST_ATTR;
146 static const uint8_t t24l [256] ICONST_ATTR;
147 static struct huffcodetab ht [HTN] IDATA_ATTR;
148
149 static const uint8_t ht_count[2][2][16] =
150 { { { 1, 5, 4, 5, 6, 5, 4, 4, 7, 3, 6, 0, 7, 2, 3, 1 }, /* table0 */
151 { 1, 5, 5, 7, 5, 8, 7, 9, 5, 7, 7, 9, 7, 9, 9,10 } }, /* hleng0 */
152 { {15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0 }, /* table1 */
153 { 4, 5, 5, 6, 5, 6, 6, 7, 5, 6, 6, 7, 6, 7, 7, 8 } } }; /* hleng1 */
154
155 static const uint8_t t1HB[4] = {1,1,1,0};
156 static const uint8_t t2HB[9] = {1,2,1,3,1,1,3,2,0};
157 static const uint8_t t3HB[9] = {3,2,1,1,1,1,3,2,0};
158 static const uint8_t t5HB[16] = {1,2,6,5,3,1,4,4,7,5,7,1,6,1,1,0};
159 static const uint8_t t6HB[16] = {7,3,5,1,6,2,3,2,5,4,4,1,3,3,2,0};
160
161 static const uint8_t t7HB[36] =
162 { 1, 2,10,19,16,10, 3, 3, 7,10, 5, 3,11, 4,13,17, 8, 4,
163 12,11,18,15,11, 2, 7, 6, 9,14, 3, 1, 6, 4, 5, 3, 2, 0 };
164
165 static const uint8_t t8HB[36] =
166 { 3, 4, 6,18,12, 5, 5, 1, 2,16, 9, 3, 7, 3, 5,14, 7, 3,
167 19,17,15,13,10, 4,13, 5, 8,11, 5, 1,12, 4, 4, 1, 1, 0 };
168
169 static const uint8_t t9HB[36] =
170 { 7, 5, 9,14,15, 7, 6, 4, 5, 5, 6, 7, 7, 6, 8, 8, 8, 5,
171 15, 6, 9,10, 5, 1,11, 7, 9, 6, 4, 1,14, 4, 6, 2, 6, 0 };
172
173 static const uint8_t t10HB[64] =
174 {1,2,10,23,35,30,12,17,3,3,8,12,18,21,12,7,11,9,15,21,32,
175 40,19,6,14,13,22,34,46,23,18,7,20,19,33,47,27,22,9,3,31,22,
176 41,26,21,20,5,3,14,13,10,11,16,6,5,1,9,8,7,8,4,4,2,0 };
177
178 static const uint8_t t11HB[64] =
179 {3,4,10,24,34,33,21,15,5,3,4,10,32,17,11,10,11,7,13,18,30,
180 31,20,5,25,11,19,59,27,18,12,5,35,33,31,58,30,16,7,5,28,26,
181 32,19,17,15,8,14,14,12,9,13,14,9,4,1,11,4,6,6,6,3,2,0 };
182
183 static const uint8_t t12HB[64] =
184 {9,6,16,33,41,39,38,26,7,5,6,9,23,16,26,11,17,7,11,14,21,
185 30,10,7,17,10,15,12,18,28,14,5,32,13,22,19,18,16,9,5,40,17,
186 31,29,17,13,4,2,27,12,11,15,10,7,4,1,27,12,8,12,6,3,1,0 };
187
188 static const uint8_t t13HB[256] =
189 {1,5,14,21,34,51,46,71,42,52,68,52,67,44,43,19,3,4,12,19,31,26,44,33,31,24,32,
190 24,31,35,22,14,15,13,23,36,59,49,77,65,29,40,30,40,27,33,42,16,22,20,37,61,56,
191 79,73,64,43,76,56,37,26,31,25,14,35,16,60,57,97,75,114,91,54,73,55,41,48,53,
192 23,24,58,27,50,96,76,70,93,84,77,58,79,29,74,49,41,17,47,45,78,74,115,94,90,
193 79,69,83,71,50,59,38,36,15,72,34,56,95,92,85,91,90,86,73,77,65,51,44,43,42,43,
194 20,30,44,55,78,72,87,78,61,46,54,37,30,20,16,53,25,41,37,44,59,54,81,66,76,57,
195 54,37,18,39,11,35,33,31,57,42,82,72,80,47,58,55,21,22,26,38,22,53,25,23,38,70,
196 60,51,36,55,26,34,23,27,14,9,7,34,32,28,39,49,75,30,52,48,40,52,28,18,17,9,5,
197 45,21,34,64,56,50,49,45,31,19,12,15,10,7,6,3,48,23,20,39,36,35,53,21,16,23,13,
198 10,6,1,4,2,16,15,17,27,25,20,29,11,17,12,16,8,1,1,0,1 };
199
200 static const uint8_t t15HB[256] =
201 {7,12,18,53,47,76,124,108,89,123,108,119,107,81,122,63,13,5,16,27,46,36,61,51,
202 42,70,52,83,65,41,59,36,19,17,15,24,41,34,59,48,40,64,50,78,62,80,56,33,29,28,
203 25,43,39,63,55,93,76,59,93,72,54,75,50,29,52,22,42,40,67,57,95,79,72,57,89,69,
204 49,66,46,27,77,37,35,66,58,52,91,74,62,48,79,63,90,62,40,38,125,32,60,56,50,
205 92,78,65,55,87,71,51,73,51,70,30,109,53,49,94,88,75,66,122,91,73,56,42,64,44,
206 21,25,90,43,41,77,73,63,56,92,77,66,47,67,48,53,36,20,71,34,67,60,58,49,88,76,
207 67,106,71,54,38,39,23,15,109,53,51,47,90,82,58,57,48,72,57,41,23,27,62,9,86,
208 42,40,37,70,64,52,43,70,55,42,25,29,18,11,11,118,68,30,55,50,46,74,65,49,39,
209 24,16,22,13,14,7,91,44,39,38,34,63,52,45,31,52,28,19,14,8,9,3,123,60,58,53,47,
210 43,32,22,37,24,17,12,15,10,2,1,71,37,34,30,28,20,17,26,21,16,10,6,8,6,2,0};
211
212 static const uint16_t t16HB[256] =
213 {1,5,14,44,74,63,110,93,172,149,138,242,225,195,376,17,3,4,12,20,35,62,53,47,
214 83,75,68,119,201,107,207,9,15,13,23,38,67,58,103,90,161,72,127,117,110,209,
215 206,16,45,21,39,69,64,114,99,87,158,140,252,212,199,387,365,26,75,36,68,65,
216 115,101,179,164,155,264,246,226,395,382,362,9,66,30,59,56,102,185,173,265,142,
217 253,232,400,388,378,445,16,111,54,52,100,184,178,160,133,257,244,228,217,385,
218 366,715,10,98,48,91,88,165,157,148,261,248,407,397,372,380,889,884,8,85,84,81,
219 159,156,143,260,249,427,401,392,383,727,713,708,7,154,76,73,141,131,256,245,
220 426,406,394,384,735,359,710,352,11,139,129,67,125,247,233,229,219,393,743,737,
221 720,885,882,439,4,243,120,118,115,227,223,396,746,742,736,721,712,706,223,436,
222 6,202,224,222,218,216,389,386,381,364,888,443,707,440,437,1728,4,747,211,210,
223 208,370,379,734,723,714,1735,883,877,876,3459,865,2,377,369,102,187,726,722,
224 358,711,709,866,1734,871,3458,870,434,0,12,10,7,11,10,17,11,9,13,12,10,7,5,3,
225 1,3};
226
227 static const uint16_t t24HB[256] =
228 {15,13,46,80,146,262,248,434,426,669,653,649,621,517,1032,88,14,12,21,38,71,
229 130,122,216,209,198,327,345,319,297,279,42,47,22,41,74,68,128,120,221,207,194,
230 182,340,315,295,541,18,81,39,75,70,134,125,116,220,204,190,178,325,311,293,
231 271,16,147,72,69,135,127,118,112,210,200,188,352,323,306,285,540,14,263,66,
232 129,126,119,114,214,202,192,180,341,317,301,281,262,12,249,123,121,117,113,
233 215,206,195,185,347,330,308,291,272,520,10,435,115,111,109,211,203,196,187,
234 353,332,313,298,283,531,381,17,427,212,208,205,201,193,186,177,169,320,303,
235 286,268,514,377,16,335,199,197,191,189,181,174,333,321,305,289,275,521,379,
236 371,11,668,184,183,179,175,344,331,314,304,290,277,530,383,373,366,10,652,346,
237 171,168,164,318,309,299,287,276,263,513,375,368,362,6,648,322,316,312,307,302,
238 292,284,269,261,512,376,370,364,359,4,620,300,296,294,288,282,273,266,515,380,
239 374,369,365,361,357,2,1033,280,278,274,267,264,259,382,378,372,367,363,360,
240 358,356,0,43,20,19,17,15,13,11,9,7,6,4,7,5,3,1,3};
241
242 static const uint32_t tab1315[256] =
243 { 0x010003,0x050005,0x070006,0x080008,0x090008,0x0a0009,0x0a000a,0x0b000a,
244 0x0a000a,0x0b000b,0x0c000b,0x0c000c,0x0d000c,0x0d000c,0x0e000d,0x0e000e,
245 0x040005,0x060005,0x080007,0x090008,0x0a0009,0x0a0009,0x0b000a,0x0b000a,
246 0x0b000a,0x0b000b,0x0c000b,0x0c000c,0x0d000c,0x0e000c,0x0e000d,0x0e000d,
247 0x070006,0x080007,0x090007,0x0a0008,0x0b0009,0x0b0009,0x0c000a,0x0c000a,
248 0x0b000a,0x0c000b,0x0c000b,0x0d000c,0x0d000c,0x0e000d,0x0f000d,0x0f000d,
249 0x080007,0x090008,0x0a0008,0x0b0009,0x0b0009,0x0c000a,0x0c000a,0x0c000b,
250 0x0c000b,0x0d000b,0x0d000c,0x0d000c,0x0d000c,0x0e000d,0x0f000d,0x0f000d,
251 0x090008,0x090008,0x0b0009,0x0b0009,0x0c000a,0x0c000a,0x0d000b,0x0d000b,
252 0x0c000b,0x0d000b,0x0d000c,0x0e000c,0x0e000c,0x0f000d,0x0f000d,0x10000d,
253 0x0a0009,0x0a0009,0x0b0009,0x0c000a,0x0c000a,0x0c000a,0x0d000b,0x0d000b,
254 0x0d000b,0x0d000b,0x0e000c,0x0d000c,0x0f000d,0x0f000d,0x10000d,0x10000e,
255 0x0a000a,0x0b0009,0x0c000a,0x0c000a,0x0d000a,0x0d000b,0x0d000b,0x0d000b,
256 0x0d000b,0x0e000c,0x0e000c,0x0e000c,0x0f000d,0x0f000d,0x10000e,0x10000e,
257 0x0b000a,0x0b000a,0x0c000a,0x0d000b,0x0d000b,0x0d000b,0x0e000b,0x0e000c,
258 0x0e000c,0x0e000c,0x0f000c,0x0f000c,0x0f000d,0x10000d,0x12000d,0x12000e,
259 0x0a000a,0x0a000a,0x0b000a,0x0c000b,0x0c000b,0x0d000b,0x0d000b,0x0e000c,
260 0x0e000c,0x0e000c,0x0e000c,0x0f000d,0x0f000d,0x10000e,0x11000e,0x11000e,
261 0x0b000a,0x0b000a,0x0c000b,0x0c000b,0x0d000b,0x0d000b,0x0d000c,0x0f000c,
262 0x0e000c,0x0f000d,0x0f000d,0x10000d,0x10000d,0x10000e,0x12000e,0x11000e,
263 0x0b000b,0x0c000b,0x0c000b,0x0d000b,0x0d000c,0x0e000c,0x0e000c,0x0f000c,
264 0x0e000c,0x0f000d,0x10000d,0x0f000d,0x10000d,0x11000e,0x12000f,0x13000e,
265 0x0c000b,0x0c000b,0x0c000b,0x0d000b,0x0e000c,0x0e000c,0x0e000c,0x0e000c,
266 0x0f000d,0x0f000d,0x0f000d,0x10000d,0x11000e,0x11000e,0x11000e,0x12000f,
267 0x0c000c,0x0d000c,0x0d000b,0x0e000c,0x0e000c,0x0f000c,0x0e000d,0x0f000d,
268 0x10000d,0x10000d,0x11000d,0x11000d,0x11000e,0x12000e,0x12000f,0x12000f,
269 0x0d000c,0x0d000c,0x0e000c,0x0f000c,0x0f000c,0x0f000d,0x10000d,0x10000d,
270 0x10000d,0x10000e,0x10000e,0x11000e,0x12000e,0x11000e,0x12000f,0x12000f,
271 0x0e000d,0x0e000d,0x0e000d,0x0f000d,0x0f000d,0x0f000d,0x11000d,0x10000d,
272 0x10000e,0x13000e,0x11000e,0x11000e,0x11000f,0x13000f,0x12000e,0x12000f,
273 0x0d000d,0x0e000d,0x0f000d,0x10000d,0x10000d,0x10000d,0x11000d,0x10000e,
274 0x11000e,0x11000e,0x12000e,0x12000e,0x15000f,0x14000f,0x15000f,0x12000f };
275
276 static const uint32_t tab01[16] =
277 { 0x10004,0x50005,0x50005,0x70006,0x50005,0x80006,0x70006,0x90007,
278 0x50005,0x70006,0x70006,0x90007,0x70006,0x90007,0x90007,0xa0008 };
279
280 static const uint32_t tab23[ 9] =
281 { 0x10002,0x40003,0x70007,0x40004,0x50004,0x70007,0x60006,0x70007,0x80008 };
282
283 static const uint32_t tab56[16] =
284 { 0x10003,0x40004,0x70006,0x80008,0x40004,0x50004,0x80006,0x90007,
285 0x70005,0x80006,0x90007,0xa0008,0x80007,0x80007,0x90008,0xa0009 };
286
287 static const uint32_t tab789[36] =
288 {0x00100803,0x00401004,0x00701c06,0x00902407,0x00902409,0x00a0280a,0x00401004,
289 0x00601005,0x00801806,0x00902807,0x00902808,0x00a0280a,0x00701c05,0x00701806,
290 0x00902007,0x00a02808,0x00a02809,0x00b02c0a,0x00802407,0x00902807,0x00a02808,
291 0x00b02c09,0x00b02c09,0x00b0300a,0x00802408,0x00902408,0x00a02809,0x00b02c09,
292 0x00b0300a,0x00c0300b,0x00902809,0x00a02809,0x00b02c0a,0x00c02c0a,0x00c0340b,
293 0x00c0340b};
294
295 static const uint32_t tabABC[64] =
296 {0x00100804,0x00401004,0x00701806,0x00902008,0x00a02409,0x00a0280a,0x00a0240a,
297 0x00b0280a,0x00401004,0x00601405,0x00801806,0x00902007,0x00a02809,0x00b02809,
298 0x00a0240a,0x00a0280a,0x00701806,0x00801c06,0x00902007,0x00a02408,0x00b02809,
299 0x00c02c0a,0x00b02809,0x00b0280a,0x00802007,0x00902007,0x00a02408,0x00b02c08,
300 0x00c02809,0x00c0300a,0x00b0280a,0x00c02c0a,0x00902408,0x00a02808,0x00b02809,
301 0x00c02c09,0x00c02c0a,0x00c0300a,0x00c02c0a,0x00c0300b,0x00a02409,0x00b02809,
302 0x00c02c0a,0x00c0300a,0x00d0300a,0x00d0340b,0x00c0300a,0x00d0340b,0x00902409,
303 0x00a02409,0x00b02409,0x00c0280a,0x00c02c0a,0x00c0300b,0x00d0300b,0x00d0300c,
304 0x00a0240a,0x00a0240a,0x00b0280a,0x00c02c0b,0x00c0300b,0x00d0300b,0x00d0300b,
305 0x00d0300c};
306
307 static const uint32_t tab1624[256] =
308 {0x00010004,0x00050005,0x00070007,0x00090008,0x000a0009,0x000a000a,0x000b000a,
309 0x000b000b,0x000c000b,0x000c000c,0x000c000c,0x000d000c,0x000d000c,0x000d000c,
310 0x000e000d,0x000a000a,0x00040005,0x00060006,0x00080007,0x00090008,0x000a0009,
311 0x000b000a,0x000b000a,0x000b000b,0x000c000b,0x000c000b,0x000c000c,0x000d000c,
312 0x000e000c,0x000d000c,0x000e000c,0x000a000a,0x00070007,0x00080007,0x00090008,
313 0x000a0009,0x000b0009,0x000b000a,0x000c000a,0x000c000b,0x000d000b,0x000c000b,
314 0x000d000b,0x000d000c,0x000d000c,0x000e000c,0x000e000d,0x000b0009,0x00090008,
315 0x00090008,0x000a0009,0x000b0009,0x000b000a,0x000c000a,0x000c000a,0x000c000b,
316 0x000d000b,0x000d000b,0x000e000b,0x000e000c,0x000e000c,0x000f000c,0x000f000c,
317 0x000c0009,0x000a0009,0x000a0009,0x000b0009,0x000b000a,0x000c000a,0x000c000a,
318 0x000d000a,0x000d000b,0x000d000b,0x000e000b,0x000e000c,0x000e000c,0x000f000c,
319 0x000f000c,0x000f000d,0x000b0009,0x000a000a,0x000a0009,0x000b000a,0x000b000a,
320 0x000c000a,0x000d000a,0x000d000b,0x000e000b,0x000d000b,0x000e000b,0x000e000c,
321 0x000f000c,0x000f000c,0x000f000c,0x0010000c,0x000c0009,0x000b000a,0x000b000a,
322 0x000b000a,0x000c000a,0x000d000a,0x000d000b,0x000d000b,0x000d000b,0x000e000b,
323 0x000e000c,0x000e000c,0x000e000c,0x000f000c,0x000f000c,0x0010000d,0x000c0009,
324 0x000b000b,0x000b000a,0x000c000a,0x000c000a,0x000d000b,0x000d000b,0x000d000b,
325 0x000e000b,0x000e000c,0x000f000c,0x000f000c,0x000f000c,0x000f000c,0x0011000d,
326 0x0011000d,0x000c000a,0x000b000b,0x000c000b,0x000c000b,0x000d000b,0x000d000b,
327 0x000d000b,0x000e000b,0x000e000b,0x000f000b,0x000f000c,0x000f000c,0x000f000c,
328 0x0010000c,0x0010000d,0x0010000d,0x000c000a,0x000c000b,0x000c000b,0x000c000b,
329 0x000d000b,0x000d000b,0x000e000b,0x000e000b,0x000f000c,0x000f000c,0x000f000c,
330 0x000f000c,0x0010000c,0x000f000d,0x0010000d,0x000f000d,0x000d000a,0x000c000c,
331 0x000d000b,0x000c000b,0x000d000b,0x000e000b,0x000e000c,0x000e000c,0x000e000c,
332 0x000f000c,0x0010000c,0x0010000c,0x0010000d,0x0011000d,0x0011000d,0x0010000d,
333 0x000c000a,0x000d000c,0x000d000c,0x000d000b,0x000d000b,0x000e000b,0x000e000c,
334 0x000f000c,0x0010000c,0x0010000c,0x0010000c,0x0010000c,0x0010000d,0x0010000d,
335 0x000f000d,0x0010000d,0x000d000a,0x000d000c,0x000e000c,0x000e000c,0x000e000c,
336 0x000e000c,0x000f000c,0x000f000c,0x000f000c,0x000f000c,0x0011000c,0x0010000d,
337 0x0010000d,0x0010000d,0x0010000d,0x0012000d,0x000d000a,0x000f000c,0x000e000c,
338 0x000e000c,0x000e000c,0x000f000c,0x000f000c,0x0010000c,0x0010000c,0x0010000d,
339 0x0012000d,0x0011000d,0x0011000d,0x0011000d,0x0013000d,0x0011000d,0x000d000a,
340 0x000e000d,0x000f000c,0x000d000c,0x000e000c,0x0010000c,0x0010000c,0x000f000c,
341 0x0010000d,0x0010000d,0x0011000d,0x0012000d,0x0011000d,0x0013000d,0x0011000d,
342 0x0010000d,0x000d000a,0x000a0009,0x000a0009,0x000a0009,0x000b0009,0x000b0009,
343 0x000c0009,0x000c0009,0x000c0009,0x000d0009,0x000d0009,0x000d0009,0x000d000a,
344 0x000d000a,0x000d000a,0x000d000a,0x000a0006};
345
346 static const uint8_t t1l[8] = {1,3,2,3,1,4,3,5};
347 static const uint8_t t2l[9] = {1,3,6,3,3,5,5,5,6};
348 static const uint8_t t3l[9] = {2,2,6,3,2,5,5,5,6};
349 static const uint8_t t5l[16] = {1,3,6,7,3,3,6,7,6,6,7,8,7,6,7,8};
350 static const uint8_t t6l[16] = {3,3,5,7,3,2,4,5,4,4,5,6,6,5,6,7};
351
352 static const uint8_t t7l[36] =
353 {1,3,6,8,8,9,3,4,6,7,7,8,6,5,7,8,8,9,7,7,8,9,9,9,7,7,8,9,9,10,8,8,9,10,10,10};
354
355 static const uint8_t t8l[36] =
356 {2,3,6,8,8,9,3,2,4,8,8,8,6,4,6,8,8,9,8,8,8,9,9,10,8,7,8,9,10,10,9,8,9,9,11,11};
357
358 static const uint8_t t9l[36] =
359 {3,3,5,6,8,9,3,3,4,5,6,8,4,4,5,6,7,8,6,5,6,7,7,8,7,6,7,7,8,9,8,7,8,8,9,9};
360
361 static const uint8_t t10l[64] =
362 {1,3,6,8,9,9,9,10,3,4,6,7,8,9,8,8,6,6,7,8,9,10,9,9,7,7,8,9,10,10,9,10,8,8,9,10,
363 10,10,10,10,9,9,10,10,11,11,10,11,8,8,9,10,10,10,11,11,9,8,9,10,10,11,11,11};
364
365 static const uint8_t t11l[64] =
366 {2,3,5,7,8,9,8,9,3,3,4,6,8,8,7,8,5,5,6,7,8,9,8,8,7,6,7,9,8,10,8,9,8,8,8,9,9,10,
367 9,10,8,8,9,10,10,11,10,11,8,7,7,8,9,10,10,10,8,7,8,9,10,10,10,10};
368
369 static const uint8_t t12l[64] =
370 {4,3,5,7,8,9,9,9,3,3,4,5,7,7,8,8,5,4,5,6,7,8,7,8,6,5,6,6,7,8,8,8,7,6,7,7,8,
371 8,8,9,8,7,8,8,8,9,8,9,8,7,7,8,8,9,9,10,9,8,8,9,9,9,9,10};
372
373 static const uint8_t t13l[256] =
374 {1,4,6,7,8,9,9,10,9,10,11,11,12,12,13,13,3,4,6,7,8,8,9,9,9,9,10,10,11,12,12,12,
375 6,6,7,8,9,9,10,10,9,10,10,11,11,12,13,13,7,7,8,9,9,10,10,10,10,11,11,11,11,12,
376 13,13,8,7,9,9,10,10,11,11,10,11,11,12,12,13,13,14,9,8,9,10,10,10,11,11,11,11,
377 12,11,13,13,14,14,9,9,10,10,11,11,11,11,11,12,12,12,13,13,14,14,10,9,10,11,11,
378 11,12,12,12,12,13,13,13,14,16,16,9,8,9,10,10,11,11,12,12,12,12,13,13,14,15,15,
379 10,9,10,10,11,11,11,13,12,13,13,14,14,14,16,15,10,10,10,11,11,12,12,13,12,13,
380 14,13,14,15,16,17,11,10,10,11,12,12,12,12,13,13,13,14,15,15,15,16,11,11,11,12,
381 12,13,12,13,14,14,15,15,15,16,16,16,12,11,12,13,13,13,14,14,14,14,14,15,16,15,
382 16,16,13,12,12,13,13,13,15,14,14,17,15,15,15,17,16,16,12,12,13,14,14,14,15,14,
383 15,15,16,16,19,18,19,16};
384
385 static const uint8_t t15l[256] =
386 {3,4,5,7,7,8,9,9,9,10,10,11,11,11,12,13,4,3,5,6,7,7,8,8,8,9,9,10,10,10,11,11,5,
387 5,5,6,7,7,8,8,8,9,9,10,10,11,11,11,6,6,6,7,7,8,8,9,9,9,10,10,10,11,11,11,7,6,
388 7,7,8,8,9,9,9,9,10,10,10,11,11,11,8,7,7,8,8,8,9,9,9,9,10,10,11,11,11,12,9,7,8,
389 8,8,9,9,9,9,10,10,10,11,11,12,12,9,8,8,9,9,9,9,10,10,10,10,10,11,11,11,12,9,8,
390 8,9,9,9,9,10,10,10,10,11,11,12,12,12,9,8,9,9,9,9,10,10,10,11,11,11,11,12,12,
391 12,10,9,9,9,10,10,10,10,10,11,11,11,11,12,13,12,10,9,9,9,10,10,10,10,11,11,11,
392 11,12,12,12,13,11,10,9,10,10,10,11,11,11,11,11,11,12,12,13,13,11,10,10,10,10,
393 11,11,11,11,12,12,12,12,12,13,13,12,11,11,11,11,11,11,11,12,12,12,12,13,13,12,
394 13,12,11,11,11,11,11,11,12,12,12,12,12,13,13,13,13};
395
396 static const uint8_t t16l[256] =
397 {1,4,6,8,9,9,10,10,11,11,11,12,12,12,13,9,3,4,6,7,8,9,9,9,10,10,10,11,12,11,12,
398 8,6,6,7,8,9,9,10,10,11,10,11,11,11,12,12,9,8,7,8,9,9,10,10,10,11,11,12,12,12,
399 13,13,10,9,8,9,9,10,10,11,11,11,12,12,12,13,13,13,9,9,8,9,9,10,11,11,12,11,12,
400 12,13,13,13,14,10,10,9,9,10,11,11,11,11,12,12,12,12,13,13,14,10,10,9,10,10,11,
401 11,11,12,12,13,13,13,13,15,15,10,10,10,10,11,11,11,12,12,13,13,13,13,14,14,14,
402 10,11,10,10,11,11,12,12,13,13,13,13,14,13,14,13,11,11,11,10,11,12,12,12,12,13,
403 14,14,14,15,15,14,10,12,11,11,11,12,12,13,14,14,14,14,14,14,13,14,11,12,12,12,
404 12,12,13,13,13,13,15,14,14,14,14,16,11,14,12,12,12,13,13,14,14,14,16,15,15,15,
405 17,15,11,13,13,11,12,14,14,13,14,14,15,16,15,17,15,14,11,9,8,8,9,9,10,10,10,
406 11,11,11,11,11,11,11,8};
407
408 static const uint8_t t24l[256] =
409 {4,4,6,7,8,9,9,10,10,11,11,11,11,11,12,9,4,4,5,6,7,8,8,9,9,9,10,10,10,10,10,8,
410 6,5,6,7,7,8,8,9,9,9,9,10,10,10,11,7,7,6,7,7,8,8,8,9,9,9,9,10,10,10,10,7,8,7,7,
411 8,8,8,8,9,9,9,10,10,10,10,11,7,9,7,8,8,8,8,9,9,9,9,10,10,10,10,10,7,9,8,8,8,8,
412 9,9,9,9,10,10,10,10,10,11,7,10,8,8,8,9,9,9,9,10,10,10,10,10,11,11,8,10,9,9,9,
413 9,9,9,9,9,10,10,10,10,11,11,8,10,9,9,9,9,9,9,10,10,10,10,10,11,11,11,8,11,9,9,
414 9,9,10,10,10,10,10,10,11,11,11,11,8,11,10,9,9,9,10,10,10,10,10,10,11,11,11,11,
415 8,11,10,10,10,10,10,10,10,10,10,11,11,11,11,11,8,11,10,10,10,10,10,10,10,11,
416 11,11,11,11,11,11,8,12,10,10,10,10,10,10,11,11,11,11,11,11,11,11,8,8,7,7,7,7,
417 7,7,7,7,7,7,8,8,8,8,4};
418
419 static struct huffcodetab ht[HTN] =
420 { { 0, NULL, NULL}, /* Apparently not used */
421 { 2, t1HB, t1l},
422 { 3, t2HB, t2l},
423 { 3, t3HB, t3l},
424 { 0, NULL, NULL}, /* Apparently not used */
425 { 4, t5HB, t5l},
426 { 4, t6HB, t6l},
427 { 6, t7HB, t7l},
428 { 6, t8HB, t8l},
429 { 6, t9HB, t9l},
430 { 8, t10HB, t10l},
431 { 8, t11HB, t11l},
432 { 8, t12HB, t12l},
433 {16, t13HB, t13l},
434 { 0, NULL, NULL}, /* Apparently not used */
435 {16, t15HB, t15l} };
436
437 static const struct huffcodebig ht_big[HTN] =
438 { { 16, 1, 1 },
439 { 16, 2, 3 },
440 { 16, 3, 7 },
441 { 16, 4, 15 },
442 { 16, 6, 63 },
443 { 16, 8, 255 },
444 { 16, 10, 1023 },
445 { 16, 13, 8191 },
446 { 16, 4, 15 },
447 { 16, 5, 31 },
448 { 16, 6, 63 },
449 { 16, 7, 127 },
450 { 16, 8, 255 },
451 { 16, 9, 511 },
452 { 16, 11, 2047 },
453 { 16, 13, 8191 } };
454
455 static const struct
456 {
457 const uint8_t region0_cnt;
458 const uint8_t region1_cnt;
459 } subdv_table[23] =
460 { {0, 0}, /* 0 bands */
461 {0, 0}, /* 1 bands */
462 {0, 0}, /* 2 bands */
463 {0, 0}, /* 3 bands */
464 {0, 0}, /* 4 bands */
465 {0, 1}, /* 5 bands */
466 {1, 1}, /* 6 bands */
467 {1, 1}, /* 7 bands */
468 {1, 2}, /* 8 bands */
469 {2, 2}, /* 9 bands */
470 {2, 3}, /* 10 bands */
471 {2, 3}, /* 11 bands */
472 {3, 4}, /* 12 bands */
473 {3, 4}, /* 13 bands */
474 {3, 4}, /* 14 bands */
475 {4, 5}, /* 15 bands */
476 {4, 5}, /* 16 bands */
477 {4, 6}, /* 17 bands */
478 {5, 6}, /* 18 bands */
479 {5, 6}, /* 19 bands */
480 {5, 7}, /* 20 bands */
481 {6, 7}, /* 21 bands */
482 {6, 7}, /* 22 bands */
483 };
484
485 static const uint16_t sfBand[6][23] =
486 {
487 /* Table B.2.b: 22.05 kHz */
488 {0,6,12,18,24,30,36,44,54,66,80,96,116,140,168,200,238,284,336,396,464,522,576},
489 /* Table B.2.c: 24 kHz */
490 {0,6,12,18,24,30,36,44,54,66,80,96,114,136,162,194,232,278,330,394,464,540,576},
491 /* Table B.2.a: 16 kHz */
492 {0,6,12,18,24,30,36,44,45,66,80,96,116,140,168,200,238,248,336,396,464,522,576},
493 /* Table B.8.b: 44.1 kHz */
494 {0,4, 8,12,16,20,24,30,36,44,52,62, 74, 90,110,134,162,196,238,288,342,418,576},
495 /* Table B.8.c: 48 kHz */
496 {0,4, 8,12,16,20,24,30,36,42,50,60, 72, 88,106,128,156,190,230,276,330,384,576},
497 /* Table B.8.a: 32 kHz */
498 {0,4, 8,12,16,20,24,30,36,44,54,66, 82,102,126,156,194,240,296,364,448,550,576} };
499
500
501 static const uint16_t int2idx[4096] = /* int2idx[i] = sqrt(i*sqrt(i)); */
502 {
503 0, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 6, 7, 7, 8, 8, 8, 9, 9,
504 9, 10, 10, 11, 11, 11, 12, 12, 12, 12, 13, 13, 13, 14, 14, 14, 15, 15, 15, 16,
505 16, 16, 16, 17, 17, 17, 18, 18, 18, 19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21,
506 22, 22, 22, 22, 23, 23, 23, 23, 24, 24, 24, 24, 25, 25, 25, 25, 26, 26, 26, 26,
507 27, 27, 27, 27, 28, 28, 28, 28, 29, 29, 29, 29, 30, 30, 30, 30, 31, 31, 31, 31,
508 32, 32, 32, 32, 33, 33, 33, 33, 34, 34, 34, 34, 34, 35, 35, 35, 35, 36, 36, 36,
509 36, 36, 37, 37, 37, 37, 38, 38, 38, 38, 38, 39, 39, 39, 39, 40, 40, 40, 40, 40,
510 41, 41, 41, 41, 42, 42, 42, 42, 42, 43, 43, 43, 43, 44, 44, 44, 44, 44, 45, 45,
511 45, 45, 45, 46, 46, 46, 46, 46, 47, 47, 47, 47, 47, 48, 48, 48, 48, 49, 49, 49,
512 49, 49, 50, 50, 50, 50, 50, 51, 51, 51, 51, 51, 52, 52, 52, 52, 52, 53, 53, 53,
513 53, 53, 54, 54, 54, 54, 54, 55, 55, 55, 55, 55, 56, 56, 56, 56, 56, 57, 57, 57,
514 57, 57, 58, 58, 58, 58, 58, 58, 59, 59, 59, 59, 59, 60, 60, 60, 60, 60, 61, 61,
515 61, 61, 61, 62, 62, 62, 62, 62, 62, 63, 63, 63, 63, 63, 64, 64, 64, 64, 64, 65,
516 65, 65, 65, 65, 65, 66, 66, 66, 66, 66, 67, 67, 67, 67, 67, 68, 68, 68, 68, 68,
517 68, 69, 69, 69, 69, 69, 70, 70, 70, 70, 70, 70, 71, 71, 71, 71, 71, 72, 72, 72,
518 72, 72, 72, 73, 73, 73, 73, 73, 74, 74, 74, 74, 74, 74, 75, 75, 75, 75, 75, 75,
519 76, 76, 76, 76, 76, 77, 77, 77, 77, 77, 77, 78, 78, 78, 78, 78, 78, 79, 79, 79,
520 79, 79, 80, 80, 80, 80, 80, 80, 81, 81, 81, 81, 81, 81, 82, 82, 82, 82, 82, 82,
521 83, 83, 83, 83, 83, 84, 84, 84, 84, 84, 84, 85, 85, 85, 85, 85, 85, 86, 86, 86,
522 86, 86, 86, 87, 87, 87, 87, 87, 87, 88, 88, 88, 88, 88, 88, 89, 89, 89, 89, 89,
523 89, 90, 90, 90, 90, 90, 90, 91, 91, 91, 91, 91, 91, 92, 92, 92, 92, 92, 92, 93,
524 93, 93, 93, 93, 93, 94, 94, 94, 94, 94, 94, 95, 95, 95, 95, 95, 95, 96, 96, 96,
525 96, 96, 96, 97, 97, 97, 97, 97, 97, 98, 98, 98, 98, 98, 98, 99, 99, 99, 99, 99,
526 99, 99,100,100,100,100,100,100,101,101,101,101,101,101,102,102,102,102,102,102,
527 103,103,103,103,103,103,104,104,104,104,104,104,104,105,105,105,105,105,105,106,
528 106,106,106,106,106,107,107,107,107,107,107,107,108,108,108,108,108,108,109,109,
529 109,109,109,109,110,110,110,110,110,110,110,111,111,111,111,111,111,112,112,112,
530 112,112,112,112,113,113,113,113,113,113,114,114,114,114,114,114,115,115,115,115,
531 115,115,115,116,116,116,116,116,116,117,117,117,117,117,117,117,118,118,118,118,
532 118,118,118,119,119,119,119,119,119,120,120,120,120,120,120,120,121,121,121,121,
533 121,121,122,122,122,122,122,122,122,123,123,123,123,123,123,123,124,124,124,124,
534 124,124,125,125,125,125,125,125,125,126,126,126,126,126,126,126,127,127,127,127,
535 127,127,128,128,128,128,128,128,128,129,129,129,129,129,129,129,130,130,130,130,
536 130,130,131,131,131,131,131,131,131,132,132,132,132,132,132,132,133,133,133,133,
537 133,133,133,134,134,134,134,134,134,134,135,135,135,135,135,135,136,136,136,136,
538 136,136,136,137,137,137,137,137,137,137,138,138,138,138,138,138,138,139,139,139,
539 139,139,139,139,140,140,140,140,140,140,140,141,141,141,141,141,141,141,142,142,
540 142,142,142,142,142,143,143,143,143,143,143,143,144,144,144,144,144,144,144,145,
541 145,145,145,145,145,145,146,146,146,146,146,146,146,147,147,147,147,147,147,147,
542 148,148,148,148,148,148,148,149,149,149,149,149,149,149,150,150,150,150,150,150,
543 150,151,151,151,151,151,151,151,152,152,152,152,152,152,152,153,153,153,153,153,
544 153,153,154,154,154,154,154,154,154,154,155,155,155,155,155,155,155,156,156,156,
545 156,156,156,156,157,157,157,157,157,157,157,158,158,158,158,158,158,158,159,159,
546 159,159,159,159,159,160,160,160,160,160,160,160,160,161,161,161,161,161,161,161,
547 162,162,162,162,162,162,162,163,163,163,163,163,163,163,163,164,164,164,164,164,
548 164,164,165,165,165,165,165,165,165,166,166,166,166,166,166,166,167,167,167,167,
549 167,167,167,167,168,168,168,168,168,168,168,169,169,169,169,169,169,169,169,170,
550 170,170,170,170,170,170,171,171,171,171,171,171,171,172,172,172,172,172,172,172,
551 172,173,173,173,173,173,173,173,174,174,174,174,174,174,174,174,175,175,175,175,
552 175,175,175,176,176,176,176,176,176,176,176,177,177,177,177,177,177,177,178,178,
553 178,178,178,178,178,178,179,179,179,179,179,179,179,180,180,180,180,180,180,180,
554 180,181,181,181,181,181,181,181,182,182,182,182,182,182,182,182,183,183,183,183,
555 183,183,183,184,184,184,184,184,184,184,184,185,185,185,185,185,185,185,186,186,
556 186,186,186,186,186,186,187,187,187,187,187,187,187,187,188,188,188,188,188,188,
557 188,189,189,189,189,189,189,189,189,190,190,190,190,190,190,190,190,191,191,191,
558 191,191,191,191,192,192,192,192,192,192,192,192,193,193,193,193,193,193,193,193,
559 194,194,194,194,194,194,194,195,195,195,195,195,195,195,195,196,196,196,196,196,
560 196,196,196,197,197,197,197,197,197,197,197,198,198,198,198,198,198,198,199,199,
561 199,199,199,199,199,199,200,200,200,200,200,200,200,200,201,201,201,201,201,201,
562 201,201,202,202,202,202,202,202,202,202,203,203,203,203,203,203,203,204,204,204,
563 204,204,204,204,204,205,205,205,205,205,205,205,205,206,206,206,206,206,206,206,
564 206,207,207,207,207,207,207,207,207,208,208,208,208,208,208,208,208,209,209,209,
565 209,209,209,209,209,210,210,210,210,210,210,210,210,211,211,211,211,211,211,211,
566 211,212,212,212,212,212,212,212,212,213,213,213,213,213,213,213,213,214,214,214,
567 214,214,214,214,214,215,215,215,215,215,215,215,215,216,216,216,216,216,216,216,
568 216,217,217,217,217,217,217,217,217,218,218,218,218,218,218,218,218,219,219,219,
569 219,219,219,219,219,220,220,220,220,220,220,220,220,221,221,221,221,221,221,221,
570 221,222,222,222,222,222,222,222,222,223,223,223,223,223,223,223,223,224,224,224,
571 224,224,224,224,224,225,225,225,225,225,225,225,225,226,226,226,226,226,226,226,
572 226,227,227,227,227,227,227,227,227,228,228,228,228,228,228,228,228,229,229,229,
573 229,229,229,229,229,229,230,230,230,230,230,230,230,230,231,231,231,231,231,231,
574 231,231,232,232,232,232,232,232,232,232,233,233,233,233,233,233,233,233,234,234,
575 234,234,234,234,234,234,234,235,235,235,235,235,235,235,235,236,236,236,236,236,
576 236,236,236,237,237,237,237,237,237,237,237,238,238,238,238,238,238,238,238,238,
577 239,239,239,239,239,239,239,239,240,240,240,240,240,240,240,240,241,241,241,241,
578 241,241,241,241,242,242,242,242,242,242,242,242,242,243,243,243,243,243,243,243,
579 243,244,244,244,244,244,244,244,244,245,245,245,245,245,245,245,245,245,246,246,
580 246,246,246,246,246,246,247,247,247,247,247,247,247,247,248,248,248,248,248,248,
581 248,248,248,249,249,249,249,249,249,249,249,250,250,250,250,250,250,250,250,250,
582 251,251,251,251,251,251,251,251,252,252,252,252,252,252,252,252,253,253,253,253,
583 253,253,253,253,253,254,254,254,254,254,254,254,254,255,255,255,255,255,255,255,
584 255,255,256,256,256,256,256,256,256,256,257,257,257,257,257,257,257,257,257,258,
585 258,258,258,258,258,258,258,259,259,259,259,259,259,259,259,259,260,260,260,260,
586 260,260,260,260,261,261,261,261,261,261,261,261,261,262,262,262,262,262,262,262,
587 262,263,263,263,263,263,263,263,263,263,264,264,264,264,264,264,264,264,265,265,
588 265,265,265,265,265,265,265,266,266,266,266,266,266,266,266,267,267,267,267,267,
589 267,267,267,267,268,268,268,268,268,268,268,268,268,269,269,269,269,269,269,269,
590 269,270,270,270,270,270,270,270,270,270,271,271,271,271,271,271,271,271,271,272,
591 272,272,272,272,272,272,272,273,273,273,273,273,273,273,273,273,274,274,274,274,
592 274,274,274,274,275,275,275,275,275,275,275,275,275,276,276,276,276,276,276,276,
593 276,276,277,277,277,277,277,277,277,277,277,278,278,278,278,278,278,278,278,279,
594 279,279,279,279,279,279,279,279,280,280,280,280,280,280,280,280,280,281,281,281,
595 281,281,281,281,281,282,282,282,282,282,282,282,282,282,283,283,283,283,283,283,
596 283,283,283,284,284,284,284,284,284,284,284,284,285,285,285,285,285,285,285,285,
597 286,286,286,286,286,286,286,286,286,287,287,287,287,287,287,287,287,287,288,288,
598 288,288,288,288,288,288,288,289,289,289,289,289,289,289,289,289,290,290,290,290,
599 290,290,290,290,291,291,291,291,291,291,291,291,291,292,292,292,292,292,292,292,
600 292,292,293,293,293,293,293,293,293,293,293,294,294,294,294,294,294,294,294,294,
601 295,295,295,295,295,295,295,295,295,296,296,296,296,296,296,296,296,296,297,297,
602 297,297,297,297,297,297,297,298,298,298,298,298,298,298,298,299,299,299,299,299,
603 299,299,299,299,300,300,300,300,300,300,300,300,300,301,301,301,301,301,301,301,
604 301,301,302,302,302,302,302,302,302,302,302,303,303,303,303,303,303,303,303,303,
605 304,304,304,304,304,304,304,304,304,305,305,305,305,305,305,305,305,305,306,306,
606 306,306,306,306,306,306,306,307,307,307,307,307,307,307,307,307,308,308,308,308,
607 308,308,308,308,308,309,309,309,309,309,309,309,309,309,310,310,310,310,310,310,
608 310,310,310,311,311,311,311,311,311,311,311,311,312,312,312,312,312,312,312,312,
609 312,313,313,313,313,313,313,313,313,313,314,314,314,314,314,314,314,314,314,315,
610 315,315,315,315,315,315,315,315,316,316,316,316,316,316,316,316,316,317,317,317,
611 317,317,317,317,317,317,318,318,318,318,318,318,318,318,318,318,319,319,319,319,
612 319,319,319,319,319,320,320,320,320,320,320,320,320,320,321,321,321,321,321,321,
613 321,321,321,322,322,322,322,322,322,322,322,322,323,323,323,323,323,323,323,323,
614 323,324,324,324,324,324,324,324,324,324,325,325,325,325,325,325,325,325,325,325,
615 326,326,326,326,326,326,326,326,326,327,327,327,327,327,327,327,327,327,328,328,
616 328,328,328,328,328,328,328,329,329,329,329,329,329,329,329,329,330,330,330,330,
617 330,330,330,330,330,330,331,331,331,331,331,331,331,331,331,332,332,332,332,332,
618 332,332,332,332,333,333,333,333,333,333,333,333,333,334,334,334,334,334,334,334,
619 334,334,335,335,335,335,335,335,335,335,335,335,336,336,336,336,336,336,336,336,
620 336,337,337,337,337,337,337,337,337,337,338,338,338,338,338,338,338,338,338,338,
621 339,339,339,339,339,339,339,339,339,340,340,340,340,340,340,340,340,340,341,341,
622 341,341,341,341,341,341,341,341,342,342,342,342,342,342,342,342,342,343,343,343,
623 343,343,343,343,343,343,344,344,344,344,344,344,344,344,344,344,345,345,345,345,
624 345,345,345,345,345,346,346,346,346,346,346,346,346,346,347,347,347,347,347,347,
625 347,347,347,347,348,348,348,348,348,348,348,348,348,349,349,349,349,349,349,349,
626 349,349,350,350,350,350,350,350,350,350,350,350,351,351,351,351,351,351,351,351,
627 351,352,352,352,352,352,352,352,352,352,352,353,353,353,353,353,353,353,353,353,
628 354,354,354,354,354,354,354,354,354,355,355,355,355,355,355,355,355,355,355,356,
629 356,356,356,356,356,356,356,356,357,357,357,357,357,357,357,357,357,357,358,358,
630 358,358,358,358,358,358,358,359,359,359,359,359,359,359,359,359,359,360,360,360,
631 360,360,360,360,360,360,361,361,361,361,361,361,361,361,361,361,362,362,362,362,
632 362,362,362,362,362,363,363,363,363,363,363,363,363,363,363,364,364,364,364,364,
633 364,364,364,364,365,365,365,365,365,365,365,365,365,365,366,366,366,366,366,366,
634 366,366,366,367,367,367,367,367,367,367,367,367,367,368,368,368,368,368,368,368,
635 368,368,369,369,369,369,369,369,369,369,369,369,370,370,370,370,370,370,370,370,
636 370,370,371,371,371,371,371,371,371,371,371,372,372,372,372,372,372,372,372,372,
637 372,373,373,373,373,373,373,373,373,373,374,374,374,374,374,374,374,374,374,374,
638 375,375,375,375,375,375,375,375,375,375,376,376,376,376,376,376,376,376,376,377,
639 377,377,377,377,377,377,377,377,377,378,378,378,378,378,378,378,378,378,379,379,
640 379,379,379,379,379,379,379,379,380,380,380,380,380,380,380,380,380,380,381,381,
641 381,381,381,381,381,381,381,382,382,382,382,382,382,382,382,382,382,383,383,383,
642 383,383,383,383,383,383,383,384,384,384,384,384,384,384,384,384,385,385,385,385,
643 385,385,385,385,385,385,386,386,386,386,386,386,386,386,386,386,387,387,387,387,
644 387,387,387,387,387,387,388,388,388,388,388,388,388,388,388,389,389,389,389,389,
645 389,389,389,389,389,390,390,390,390,390,390,390,390,390,390,391,391,391,391,391,
646 391,391,391,391,391,392,392,392,392,392,392,392,392,392,393,393,393,393,393,393,
647 393,393,393,393,394,394,394,394,394,394,394,394,394,394,395,395,395,395,395,395,
648 395,395,395,395,396,396,396,396,396,396,396,396,396,397,397,397,397,397,397,397,
649 397,397,397,398,398,398,398,398,398,398,398,398,398,399,399,399,399,399,399,399,
650 399,399,399,400,400,400,400,400,400,400,400,400,400,401,401,401,401,401,401,401,
651 401,401,402,402,402,402,402,402,402,402,402,402,403,403,403,403,403,403,403,403,
652 403,403,404,404,404,404,404,404,404,404,404,404,405,405,405,405,405,405,405,405,
653 405,405,406,406,406,406,406,406,406,406,406,406,407,407,407,407,407,407,407,407,
654 407,407,408,408,408,408,408,408,408,408,408,408,409,409,409,409,409,409,409,409,
655 409,410,410,410,410,410,410,410,410,410,410,411,411,411,411,411,411,411,411,411,
656 411,412,412,412,412,412,412,412,412,412,412,413,413,413,413,413,413,413,413,413,
657 413,414,414,414,414,414,414,414,414,414,414,415,415,415,415,415,415,415,415,415,
658 415,416,416,416,416,416,416,416,416,416,416,417,417,417,417,417,417,417,417,417,
659 417,418,418,418,418,418,418,418,418,418,418,419,419,419,419,419,419,419,419,419,
660 419,420,420,420,420,420,420,420,420,420,420,421,421,421,421,421,421,421,421,421,
661 421,422,422,422,422,422,422,422,422,422,422,423,423,423,423,423,423,423,423,423,
662 423,424,424,424,424,424,424,424,424,424,424,425,425,425,425,425,425,425,425,425,
663 425,426,426,426,426,426,426,426,426,426,426,427,427,427,427,427,427,427,427,427,
664 427,428,428,428,428,428,428,428,428,428,428,429,429,429,429,429,429,429,429,429,
665 429,430,430,430,430,430,430,430,430,430,430,431,431,431,431,431,431,431,431,431,
666 431,432,432,432,432,432,432,432,432,432,432,433,433,433,433,433,433,433,433,433,
667 433,434,434,434,434,434,434,434,434,434,434,435,435,435,435,435,435,435,435,435,
668 435,435,436,436,436,436,436,436,436,436,436,436,437,437,437,437,437,437,437,437,
669 437,437,438,438,438,438,438,438,438,438,438,438,439,439,439,439,439,439,439,439,
670 439,439,440,440,440,440,440,440,440,440,440,440,441,441,441,441,441,441,441,441,
671 441,441,442,442,442,442,442,442,442,442,442,442,443,443,443,443,443,443,443,443,
672 443,443,443,444,444,444,444,444,444,444,444,444,444,445,445,445,445,445,445,445,
673 445,445,445,446,446,446,446,446,446,446,446,446,446,447,447,447,447,447,447,447,
674 447,447,447,448,448,448,448,448,448,448,448,448,448,448,449,449,449,449,449,449,
675 449,449,449,449,450,450,450,450,450,450,450,450,450,450,451,451,451,451,451,451,
676 451,451,451,451,452,452,452,452,452,452,452,452,452,452,453,453,453,453,453,453,
677 453,453,453,453,453,454,454,454,454,454,454,454,454,454,454,455,455,455,455,455,
678 455,455,455,455,455,456,456,456,456,456,456,456,456,456,456,457,457,457,457,457,
679 457,457,457,457,457,457,458,458,458,458,458,458,458,458,458,458,459,459,459,459,
680 459,459,459,459,459,459,460,460,460,460,460,460,460,460,460,460,460,461,461,461,
681 461,461,461,461,461,461,461,462,462,462,462,462,462,462,462,462,462,463,463,463,
682 463,463,463,463,463,463,463,463,464,464,464,464,464,464,464,464,464,464,465,465,
683 465,465,465,465,465,465,465,465,466,466,466,466,466,466,466,466,466,466,466,467,
684 467,467,467,467,467,467,467,467,467,468,468,468,468,468,468,468,468,468,468,469,
685 469,469,469,469,469,469,469,469,469,469,470,470,470,470,470,470,470,470,470,470,
686 471,471,471,471,471,471,471,471,471,471,472,472,472,472,472,472,472,472,472,472,
687 472,473,473,473,473,473,473,473,473,473,473,474,474,474,474,474,474,474,474,474,
688 474,475,475,475,475,475,475,475,475,475,475,475,476,476,476,476,476,476,476,476,
689 476,476,477,477,477,477,477,477,477,477,477,477,477,478,478,478,478,478,478,478,
690 478,478,478,479,479,479,479,479,479,479,479,479,479,479,480,480,480,480,480,480,
691 480,480,480,480,481,481,481,481,481,481,481,481,481,481,482,482,482,482,482,482,
692 482,482,482,482,482,483,483,483,483,483,483,483,483,483,483,484,484,484,484,484,
693 484,484,484,484,484,484,485,485,485,485,485,485,485,485,485,485,486,486,486,486,
694 486,486,486,486,486,486,486,487,487,487,487,487,487,487,487,487,487,488,488,488,
695 488,488,488,488,488,488,488,488,489,489,489,489,489,489,489,489,489,489,490,490,
696 490,490,490,490,490,490,490,490,490,491,491,491,491,491,491,491,491,491,491,492,
697 492,492,492,492,492,492,492,492,492,492,493,493,493,493,493,493,493,493,493,493,
698 494,494,494,494,494,494,494,494,494,494,494,495,495,495,495,495,495,495,495,495,
699 495,496,496,496,496,496,496,496,496,496,496,496,497,497,497,497,497,497,497,497,
700 497,497,497,498,498,498,498,498,498,498,498,498,498,499,499,499,499,499,499,499,
701 499,499,499,499,500,500,500,500,500,500,500,500,500,500,501,501,501,501,501,501,
702 501,501,501,501,501,502,502,502,502,502,502,502,502,502,502,503,503,503,503,503,
703 503,503,503,503,503,503,504,504,504,504,504,504,504,504,504,504,504,505,505,505,
704 505,505,505,505,505,505,505,506,506,506,506,506,506,506,506,506,506,506,507,507,
705 507,507,507,507,507,507,507,507,507,508,508,508,508,508,508,508,508,508,508,509,
706 509,509,509,509,509,509,509,509,509,509,510,510,510,510,510,510,510,510,510,510,
707 510,511,511,511,511,511,511,511,511,511,511,512,512,512,512,512 };
708
709 static const uint8_t order[32] =
710 { 0, 1, 16, 17, 8, 9, 24, 25, 4, 5, 20, 21, 12, 13, 28, 29,
711 2, 3, 18, 19,10,11, 26, 27, 6, 7, 22, 23, 14, 15, 30, 31 };
712
713 static const uint16_t sampr_index[2][3] =
714 { { 22050, 24000, 16000 }, /* MPEG 2 */
715 { 44100, 48000, 32000 } }; /* MPEG 1 */
716
717 static const uint16_t bitr_index[2][15] =
718 { {0, 8,16,24,32,40,48,56, 64, 80, 96,112,128,144,160}, /* MPEG 2 */
719 {0,32,40,48,56,64,80,96,112,128,160,192,224,256,320} }; /* MPEG 1 */
720
721 static const uint8_t num_bands[3][15] =
722 { {0,10,10,10,10,12,14,16, 20, 22, 24, 26, 28, 30, 32},
723 {0,10,10,10,10,10,12,14, 18, 24, 26, 28, 30, 32, 32},
724 {0,10,12,14,18,24,26,28, 30, 32, 32, 32, 32, 32, 32} };
725
726 static const int16_t cx[9] =
727 { 16135, 10531, 5604, 15396, -2845,-12551, 14189, 8192, 16384 };
728
729 static const int16_t ca[8] =
730 {-16859,-15458,-10269, -5961, -3099, -1342, -465, -121 };
731
732 static const uint16_t cs[8] =
733 { 28098, 28893, 31117, 32221, 32621, 32740, 32765, 32768 };
734
735 static const int16_t enwindow[15*27+24] =
736 { 0, 65, 593, 1766, 22228, 2115, 611, 62,
737 8, 119, 1419, 10564,-11659,-1635,-154, -9,
738 -8, -119,-1419,-10564, 11659, 1635, 154, 9, 464, 100, 91,
739 0, 69, 604, 1635, 23148, 2363, 643, 62,
740 7, 107, 1368, 10449,-12733,-1818,-180,-11,
741 -7, -107,-1368,-10449, 12733, 1818, 180, 11, 420, 200, 164,
742 0, 72, 608, 1465, 23979, 2600, 671, 63,
743 7, 94, 1305, 10265,-13818,-2004,-207,-12,
744 -7, -94,-1305,-10265, 13818, 2004, 207, 12, 380, 297, 220,
745 0, 76, 606, 1256, 24718, 2825, 693, 63,
746 6, 81, 1232, 10016,-14908,-2192,-236,-14,
747 -6, -81,-1232,-10016, 14908, 2192, 236, 14, 342, 392, 262,
748 0, 78, 597, 1007, 25359, 3033, 712, 63,
749 6, 68, 1150, 9706,-15995,-2380,-267,-15,
750 -6, -68,-1150, -9706, 15995, 2380, 267, 15, 307, 483, 289,
751 0, 80, 580, 719, 25901, 3224, 726, 62,
752 6, 54, 1060, 9343,-17072,-2565,-299,-17,
753 -6, -54,-1060, -9343, 17072, 2565, 299, 17, 274, 569, 304,
754 -1, 82, 555, 391, 26339, 3395, 735, 61,
755 5, 40, 963, 8930,-18131,-2747,-332,-19,
756 -5, -40, -963, -8930, 18131, 2747, 332, 19, 242, 650, 307,
757 -1, 83, 523, 26, 26672, 3545, 740, 60,
758 5, 27, 861, 8474,-19164,-2923,-366,-21,
759 -5, -27, -861, -8474, 19164, 2923, 366, 21, 212, 724, 300,
760 -1, 83, 482, -376, 26900, 3672, 739, 58,
761 4, 14, 756, 7981,-20163,-3092,-401,-24,
762 -4, -14, -756, -7981, 20163, 3092, 401, 24, 183, 792, 283,
763 -1, 82, 433, -812, 27022, 3776, 735, 56,
764 4, 1, 648, 7456,-21122,-3250,-435,-26,
765 -4, -1, -648, -7456, 21122, 3250, 435, 26, 155, 851, 258,
766 -1, 81, 376, -1281, 27038, 3855, 726, 54,
767 3, -11, 539, 6907,-22032,-3397,-470,-28,
768 -3, 11, -539, -6907, 22032, 3397, 470, 28, 128, 903, 226,
769 -1, 78, 312, -1778, 26951, 3910, 713, 52,
770 3, -22, 430, 6338,-22887,-3530,-503,-31,
771 -3, 22, -430, -6338, 22887, 3530, 503, 31, 102, 946, 188,
772 -2, 75, 239, -2302, 26761, 3941, 696, 49,
773 3, -33, 322, 5757,-23678,-3648,-537,-34,
774 -3, 33, -322, -5757, 23678, 3648, 537, 34, 76, 980, 145,
775 -2, 70, 160, -2848, 26472, 3948, 676, 47,
776 3, -42, 217, 5167,-24399,-3749,-568,-36,
777 -3, 42, -217, -5167, 24399, 3749, 568, 36, 50, 1004, 99,
778 -2, 65, 74, -3412, 26087, 3931, 653, 44,
779 2, -51, 115, 4577,-25045,-3830,-599,-39,
780 -2, 51, -115, -4577, 25045, 3830, 599, 39, 25, 1019, 50,
781
782 25610,3891,627,42,-3990,-18,58,-2,
783 21226,-21226,10604,-10604,1860,-1860,1458,-1458,576,-576,130,-130,60,-60,8,-8
784 };
785
786 static const int16_t win[18][4] = {
787 { -3072, -134, -146, 3352 },
788 { -2747, -362, -471, 3579 },
789 { -2387, -529, -831, 3747 },
790 { -2004, -632,-1214, 3850 },
791 { -1609, -666,-1609, 3884 },
792 { -1214, -632,-2004, 3850 },
793 { -831, -529,-2387, 3747 },
794 { -471, -362,-2747, 3579 },
795 { -146, -134,-3072, 3352 },
796 { 134,-3072,-3352, -146 },
797 { 362,-2747,-3579, -471 },
798 { 529,-2387,-3747, -831 },
799 { 632,-2004,-3850,-1214 },
800 { 666,-1609,-3884,-1609 },
801 { 632,-1214,-3850,-2004 },
802 { 529, -831,-3747,-2387 },
803 { 362, -471,-3579,-2747 },
804 { 134, -146,-3352,-3072 } };
805
806 static char* mp3_enc_err[] = {
807 /* 0 */ "",
808 /* 1 */ "Cannot open file.",
809 /* 2 */ "'RIFF' missing.",
810 /* 3 */ "'WAVE' missing.",
811 /* 4 */ "'fmt ' missing.",
812 /* 5 */ "Linear PCM required.",
813 /* 6 */ "16 bit per sample required.",
814 /* 7 */ "<=2 channels required.",
815 /* 8 */ "'data' missing.",
816 /* 9 */ "Samplerate not supported."
817 };
818
819 static const char* wav_filename;
820 static int mp3file, wavfile, wav_size, frames;
821 static void *enc_buffer;
822 static size_t enc_buffer_size;
823 static int enc_chunk = 0; /* encode chunk counter */
824 static int enc_size;
825 static config_t cfg;
826 static uint8_t band_scale_f[22];
827
828
829 /* forward declarations */
830 static int HuffmanCode( short *ix, char *xr_sign, uint32_t begin, uint32_t end, int table);
831 static int HuffmanCod1( short *ix, char *xr_sign, uint32_t begin, uint32_t end, int table);
832 static void putbits(uint32_t val, uint32_t nbit);
833 static int find_best_2( short *ix, uint32_t start, uint32_t end, const uint32_t *table,
834 uint32_t len, int *bits);
835 static int find_best_3( short *ix, uint32_t start, uint32_t end, const uint32_t *table,
836 uint32_t len, int *bits);
837 static int count_bit1 ( short *ix, uint32_t start, uint32_t end, int *bits );
838 static int count_bigv ( short *ix, uint32_t start, uint32_t end, int table0, int table1,
839 int *bits);
840
841
842 static bool checkString(int fd, char *string)
843 {
844 char temp[4];
845
846 rb->read(fd, temp, 4);
847
848 /* return 1 on match, 0 on no match */
849 return !rb->memcmp(temp, string, 4);
850 }
851
852 static int Read16BitsLowHigh(int fd)
853 {
854 char first, second;
855
856 rb->read(fd, &first, 1);
857 rb->read(fd, &second, 1);
858
859 return ((int)second << 8) | (first & 0xff);
860 }
861
862
863 static int Read32BitsLowHigh(int fd)
864 {
865 int first = 0xffff & Read16BitsLowHigh(fd);
866 int second = 0xffff & Read16BitsLowHigh(fd);
867
868 return (second << 16) + first;
869 }
870
871 static int wave_open(void)
872 {
873 unsigned short wFormatTag;
874 /* rockbox: comment 'set but unused" variable
875 unsigned long dAvgBytesPerSec;
876 unsigned short wBlockAlign;
877 */
878 unsigned short bits_per_samp;
879 long header_size;
880
881 if((wavfile = rb->open(wav_filename, O_RDONLY)) < 0)
882 return -1;
883
884 if(!checkString(wavfile,"RIFF")) return -2;
885 Read32BitsLowHigh(wavfile); /* complete wave chunk size */
886 if(!checkString(wavfile,"WAVE")) return -3;
887 if(!checkString(wavfile,"fmt ")) return -4;
888
889 header_size = Read32BitsLowHigh(wavfile); /* chunk size */
890 wFormatTag = Read16BitsLowHigh(wavfile);
891
892 cfg.channels = Read16BitsLowHigh(wavfile);
893 cfg.samplerate = Read32BitsLowHigh(wavfile);
894 /*dAvgBytesPerSec*/ Read32BitsLowHigh(wavfile);
895 /*wBlockAlign */ Read16BitsLowHigh(wavfile);
896 bits_per_samp = Read16BitsLowHigh(wavfile);
897
898 if(wFormatTag != 0x0001) return -5; /* linear PCM required */
899 if(bits_per_samp != 16) return -6; /* 16 bps required */
900 if(cfg.channels > 2) return -7; /* <=2 channels required */
901 if(!checkString(wavfile,"data")) return -8;
902
903 /* Sample rates != 16/22.05/24/32/44.1/48 kHz are not supported. */
904 if((cfg.samplerate != 16000) && (cfg.samplerate != 22050) &&
905 (cfg.samplerate != 24000) && (cfg.samplerate != 32000) &&
906 (cfg.samplerate != 44100) && (cfg.samplerate != 48000)) return -9;
907
908 header_size = 0x28;
909 wav_size = rb->filesize(wavfile);
910 rb->lseek(wavfile, header_size, SEEK_SET);
911
912 return 0;
913 }
914
915 static int read_samples(uint16_t *buffer, int num_samples)
916 {
917 uint16_t tmpbuf[MAX_SAMP_PER_FRAME*2]; /* SAMP_PER_FRAME*MAX_CHANNELS */
918 int byte_per_sample = cfg.channels * 2; /* requires bits_per_sample==16 */
919 int s, samples = rb->read(wavfile, tmpbuf, byte_per_sample * num_samples) / byte_per_sample;
920 /* Pad last sample with zeros */
921 memset(tmpbuf + samples*cfg.channels, 0, (num_samples-samples)*cfg.channels);
922
923 if (cfg.channels==1)
924 {
925 /* interleave the mono samples to stereo as required by encoder */
926 for(s=0; s<num_samples; s++)
927 buffer[2*s] = tmpbuf[s];
928 }
929 else
930 {
931 /* interleaving is correct for stereo */
932 memcpy(buffer, tmpbuf, sizeof(tmpbuf));
933 }
934
935 return samples;
936 }
937
938 static inline uint32_t myswap32(uint32_t val)
939 {
940 const uint8_t* v = (const uint8_t*)&val;
941
942 return ((uint32_t)v[0]<<24) | ((uint32_t)v[1]<<16) | ((uint32_t)v[2]<<8) | v[3];
943 }
944
945 static void encodeSideInfo( side_info_t si[2][2] )
946 {
947 int gr, ch, header;
948 uint32_t cc=0, sz=0;
949
950 /*
951 * MPEG header layout:
952 * AAAAAAAA AAABBCCD EEEEFFGH IIJJKLMM
953 * A (31-21) = frame sync
954 * B (20-19) = MPEG type
955 * C (18-17) = MPEG layer
956 * D (16) = protection bit
957 * E (15-12) = bitrate index
958 * F (11-10) = samplerate index
959 * G (9) = padding bit
960 * H (8) = private bit
961 * I (7-6) = channel mode
962 * J (5-4) = mode extension (jstereo only)
963 * K (3) = copyright bit
964 * L (2) = original
965 * M (1-0) = emphasis
966 */
967
968 header = (0xfff00000) | /* frame sync (AAAAAAAAA AAA)
969 mp3 type (upper): 1 (B) */
970 (0x01 << 17) | /* mp3 layer: 01 (CC) */
971 ( 0x1 << 16) | /* mp3 crc: 1 (D) */
972 ( 0x1 << 2); /* mp3 org: 1 (L) */
973 header |= cfg.mpg.type << 19;
974 header |= cfg.mpg.bitr_id << 12;
975 header |= cfg.mpg.smpl_id << 10;
976 header |= cfg.mpg.padding << 9;
977 header |= cfg.mpg.mode << 6;
978 /* no emphasis (bits 0-1) */
979 putbits( header, 32 );
980
981 if(cfg.mpg.type == 1)
982 { /* MPEG1 */
983 if(cfg.channels == 2) { putlong( 0, 20); }
984 else { putlong( 0, 18); }
985
986 for(gr=0; gr<cfg.granules; gr++)
987 for(ch=0; ch<cfg.channels; ch++)
988 {
989 side_info_t *gi = &si[gr][ch];
990
991 putlong((gi->part2_3_length+42),12 ); /* add scale_facs array size */
992 putlong( gi->address3>>1, 9 );
993 putlong( gi->global_gain, 8 );
994 putlong( 9, 4 ); /* set scale_facs compr type */
995 putlong( gi->table_select[0], 6 );
996 putlong( gi->table_select[1], 5 );
997 putlong( gi->table_select[2], 5 );
998 putlong( gi->region_0_1, 7 );
999 putlong( 1 , 2 ); /* set scale_facs to 1bit */
1000 putlong( gi->table_select[3], 1 );
1001 }
1002 }
1003 else
1004 { /* MPEG2 */
1005 if(cfg.channels == 2) { putlong( 0, 10); }
1006 else { putlong( 0, 9); }
1007
1008 for(ch=0; ch<cfg.channels; ch++)
1009 {
1010 side_info_t *gi = &si[0][ch];
1011
1012 putlong((gi->part2_3_length+42),12 ); /* add scale_facs array size */
1013 putlong( gi->address3>>1, 9 );
1014 putlong( gi->global_gain, 8 );
1015 putlong( 0xCA, 9 ); /* set scale_facs compr type */
1016 putlong( gi->table_select[0], 6 );
1017 putlong( gi->table_select[1], 5 );
1018 putlong( gi->table_select[2], 5 );
1019 putlong( gi->region_0_1 , 7 );
1020 putlong( 1 , 1 ); /* set scale_facs to 1bit */
1021 putlong( gi->table_select[3], 1 );
1022 }
1023 }
1024 /* flush remaining bits */
1025 putbits(cc, sz);
1026 }
1027
1028 /* Note the discussion of huffmancodebits() on pages 28 and 29 of the IS,
1029 as well as the definitions of the side information on pages 26 and 27. */
1030 static void Huffmancodebits( short *ix, char *xr_sign, side_info_t *gi )
1031 {
1032 int region1 = gi->address1;
1033 int region2 = gi->address2;
1034 int bigvals = gi->address3;
1035 int count1 = bigvals + (gi->count1 << 2);
1036 int stuffBits = 0;
1037 int bits = 0;
1038 int i, v;
1039
1040 for(i=v=0; i<32; i+=2)
1041 v |= band_scale_f[i>>1] << (30-i);
1042 putbits(v, 32); // store scale_facs (part1)
1043
1044 for(v=0; i<42; i+=2)
1045 v |= band_scale_f[i>>1] << (40-i);
1046 putbits(v, 10); // store scale_facs (part2)
1047
1048 if(region1 > 0)
1049 bits += HuffmanCode(ix, xr_sign, 0 , region1, gi->table_select[0]);
1050
1051 if(region2 > region1)
1052 bits += HuffmanCode(ix, xr_sign, region1, region2, gi->table_select[1]);
1053
1054 if(bigvals > region2)
1055 bits += HuffmanCode(ix, xr_sign, region2, bigvals, gi->table_select[2]);
1056
1057 if(count1 > bigvals)
1058 bits += HuffmanCod1(ix, xr_sign, bigvals, count1, gi->table_select[3]);
1059
1060 if((stuffBits = gi->part2_3_length - bits) > 0)
1061 {
1062 int stuffWords = stuffBits >> 5;
1063 int remainBits = stuffBits & 31;
1064
1065 if( remainBits )
1066 putbits( ~0, remainBits );
1067
1068 while( stuffWords-- )
1069 putbits( ~0, 32 ); /* Huffman code tables leed to padding ones */
1070 }
1071 }
1072
1073 int HuffmanCod1( short *ix, char *xr_sign, uint32_t begin, uint32_t end, int tbl)
1074 {
1075 uint32_t cc=0, sz=0;
1076 uint32_t i, d, p;
1077 int sumbit=0, s=0, l=0, v, w, x, y;
1078 #define sgnv xr_sign[i+0]
1079 #define sgnw xr_sign[i+1]
1080 #define sgnx xr_sign[i+2]
1081 #define sgny xr_sign[i+3]
1082
1083 for(i=begin; i<end; i+=4)
1084 {
1085 v = ix[i+0];
1086 w = ix[i+1];
1087 x = ix[i+2];
1088 y = ix[i+3];
1089 p = (v << 3) + (w << 2) + (x << 1) + y;
1090
1091 switch(p)
1092 {
1093 case 0: l=0; s = 0; break;
1094 case 1: l=1; s = sgny; break;
1095 case 2: l=1; s = sgnx; break;
1096 case 3: l=2; s = (sgnx << 1) + sgny; break;
1097 case 4: l=1; s = sgnw; break;
1098 case 5: l=2; s = (sgnw << 1) + sgny; break;
1099 case 6: l=2; s = (sgnw << 1) + sgnx; break;
1100 case 7: l=3; s = (sgnw << 2) + (sgnx << 1) + sgny; break;
1101 case 8: l=1; s = sgnv; break;
1102 case 9: l=2; s = (sgnv << 1) + sgny; break;
1103 case 10: l=2; s = (sgnv << 1) + sgnx; break;
1104 case 11: l=3; s = (sgnv << 2) + (sgnx << 1) + sgny; break;
1105 case 12: l=2; s = (sgnv << 1) + sgnw; break;
1106 case 13: l=3; s = (sgnv << 2) + (sgnw << 1) + sgny; break;
1107 case 14: l=3; s = (sgnv << 2) + (sgnw << 1) + sgnx; break;
1108 case 15: l=4; s = (sgnv << 3) + (sgnw << 2) + (sgnx << 1) + sgny; break;
1109 }
1110
1111 d = (ht_count[tbl][0][p] << l) + s;
1112 l = ht_count[tbl][1][p];
1113 putlong( d, l );
1114 sumbit += l;
1115 }
1116
1117 /* flush remaining bits */
1118 putbits(cc, sz);
1119
1120 return sumbit;
1121 }
1122
1123 /* Implements the pseudocode of page 98 of the IS */
1124 int HuffmanCode(short *ix, char *xr_sign, uint32_t begin, uint32_t end, int table)
1125 {
1126 uint32_t cc=0, sz=0, code;
1127 uint32_t i, xl=0, yl=0, idx;
1128 int x, y, bit, sumbit=0;
1129 #define sign_x xr_sign[i+0]
1130 #define sign_y xr_sign[i+1]
1131
1132 if(table == 0)
1133 return 0;
1134
1135 if( table > 15 )
1136 { /* ESC-table is used */
1137 uint32_t linbits = ht_big[table-16].linbits;
1138 const uint16_t *hffcode = table < 24 ? t16HB : t24HB;
1139 const uint8_t *hlen = table < 24 ? t16l : t24l;
1140
1141 for(i=begin; i<end; i+=2)
1142 {
1143 x = ix[ i ];
1144 y = ix[i+1];
1145
1146 if(x > 14) { xl = x - 15; x = 15; }
1147 if(y > 14) { yl = y - 15; y = 15; }
1148
1149 idx = x * 16 + y;
1150 code = hffcode[idx];
1151 bit = hlen [idx];
1152
1153 if(x)
1154 {
1155 if(x > 14)
1156 {
1157 code = (code << linbits) | xl;
1158 bit += linbits;
1159 }
1160
1161 code = (code << 1) | sign_x;
1162 bit += 1;
1163 }
1164
1165 if(y)
1166 {
1167 if(y > 14)
1168 {
1169 if(bit + linbits + 1 > 32)
1170 {
1171 putlong( code, bit );
1172 sumbit += bit;
1173 code = bit = 0;
1174 }
1175
1176 code = (code << linbits) | yl;
1177 bit += linbits;
1178 }
1179
1180 code = (code << 1) | sign_y;
1181 bit += 1;
1182 }
1183
1184 putlong( code, bit );
1185 sumbit += bit;
1186 }
1187 }
1188 else
1189 { /* No ESC-words */
1190 const struct huffcodetab *h = &ht[table];
1191
1192 for(i=begin; i<end; i+=2)
1193 {
1194 x = ix[i];
1195 y = ix[i+1];
1196
1197 idx = x * h->len + y;
1198 code = h->table[idx];
1199 bit = h->hlen [idx];
1200
1201 if(x)
1202 {
1203 code = (code << 1) | sign_x;
1204 bit += 1;
1205 }
1206
1207 if(y)
1208 {
1209 code = (code << 1) | sign_y;
1210 bit += 1;
1211 }
1212
1213 putlong( code, bit );
1214 sumbit += bit;
1215 }
1216 }
1217
1218 /* flush remaining bits */
1219 putbits(cc, sz);
1220
1221 return sumbit;
1222 }
1223
1224 void putbits(uint32_t val, uint32_t nbit)
1225 {
1226 int new_bitpos = CodedData.bitpos + nbit;
1227 int ptrpos = CodedData.bitpos >> 5;
1228
1229 val = val & (0xffffffff >> (32 - nbit));
1230
1231 /* data fit in one uint32_t */
1232 if(((new_bitpos - 1) >> 5) == ptrpos)
1233 CodedData.bbuf[ptrpos] |= val << ((32 - new_bitpos) & 31);
1234 else
1235 {
1236 CodedData.bbuf[ptrpos ] |= val >> ((new_bitpos - 32) & 31);
1237 CodedData.bbuf[ptrpos+1] |= val << ((32 - new_bitpos) & 31);
1238 }
1239
1240 CodedData.bitpos = new_bitpos;
1241 }
1242
1243 /***************************************************************************/
1244 /* Choose the Huffman table that will encode ix[begin..end] with */
1245 /* the fewest bits. */
1246 /* Note: This code contains knowledge about the sizes and characteristic */
1247 /* of the Huffman tables as defined in the IS (Table B.7), and will not */
1248 /* work with any arbitrary tables. */
1249 /***************************************************************************/
1250 static int choose_table( short *ix, uint32_t begin, uint32_t end, int *bits )
1251 {
1252 uint32_t i;
1253 int max, table0, table1;
1254
1255 for(i=begin,max=0; i<end; i++)
1256 if(ix[i] > max)
1257 max = ix[i];
1258
1259 if(max < 16)
1260 {
1261 /* tables without linbits */
1262 /* indx: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 */
1263 /* len: 0, 2, 3, 3, 0, 4, 4, 6, 6, 6, 8, 8, 8, 16, 0, 16 */
1264 switch(max)
1265 {
1266 case 0: return 0;
1267 case 1: return count_bit1(ix, begin, end, bits);
1268 case 2: return 2 + find_best_2(ix, begin, end, tab23, 3, bits);
1269 case 3: return 5 + find_best_2(ix, begin, end, tab56, 4, bits);
1270 case 4:
1271 case 5: return 7 + find_best_3(ix, begin, end, tab789, 6, bits);
1272 case 6:
1273 case 7: return 10 + find_best_3(ix, begin, end, tabABC, 8, bits);
1274 default: return 13 + find_best_2(ix, begin, end, tab1315, 16, bits) * 2;
1275 }
1276 }
1277 else
1278 {
1279 /* tables with linbits */
1280 max -= 15;
1281
1282 for(table0=0; table0<8; table0++)
1283 if(ht_big[table0].linmax >= max)
1284 break;
1285
1286 for(table1=8; table1<16; table1++)
1287 if(ht_big[table1].linmax >= max)
1288 break;
1289
1290 return 16 + count_bigv(ix, begin, end, table0, table1, bits);
1291 }
1292 }
1293
1294 int find_best_2(short *ix, uint32_t start, uint32_t end, const uint32_t *table,
1295 uint32_t len, int *bits)
1296 {
1297 uint32_t i, sum = 0;
1298
1299 for(i=start; i<end; i+=2)
1300 sum += table[ix[i] * len + ix[i+1]];
1301
1302 if((sum & 0xffff) <= (sum >> 16))
1303 {
1304 *bits = (sum & 0xffff);
1305 return 1;
1306 }
1307 else
1308 {
1309 *bits = sum >> 16;
1310 return 0;
1311 }
1312 }
1313
1314 int find_best_3(short *ix, uint32_t start, uint32_t end, const uint32_t *table,
1315 uint32_t len, int *bits)
1316 {
1317 uint32_t i, j, sum = 0;
1318 int sum1 = 0;
1319 int sum2 = 0;
1320 int sum3 = 0;
1321
1322 /* avoid overflow in packed additions: 78*13 < 1024 */
1323 for(i=start; i<end; )
1324 {
1325 j = i + 2*78 > end ? end : i + 2*78;
1326
1327 for(sum=0; i<j; i+=2)
1328 sum += table[ix[i] * len + ix[i+1]];
1329
1330 sum1 += (sum >> 20);
1331 sum2 += (sum >> 10) & 0x3ff;
1332 sum3 += (sum >> 0) & 0x3ff;
1333 }
1334
1335 i = 0;
1336 if(sum1 > sum2) { sum1 = sum2; i = 1; }
1337 if(sum1 > sum3) { sum1 = sum3; i = 2; }
1338
1339 *bits = sum1;
1340
1341 return i;
1342 }
1343
1344 /*************************************************************************/
1345 /* Function: Count the number of bits necessary to code the subregion. */
1346 /*************************************************************************/
1347 int count_bit1(short *ix, uint32_t start, uint32_t end, int *bits )
1348 {
1349 uint32_t i, sum = 0;
1350
1351 for(i=start; i<end; i+=2)
1352 sum += t1l[4 + ix[i] * 2 + ix[i+1]];
1353
1354 *bits = sum;
1355
1356 return 1; /* this is table1 */
1357 }
1358
1359 int count_bigv(short *ix, uint32_t start, uint32_t end, int table0,
1360 int table1, int *bits )
1361 {
1362 uint32_t i, sum0, sum1, sum=0, bigv=0, x, y;
1363
1364 /* ESC-table is used */
1365 for(i=start; i<end; i+=2)
1366 {
1367 x = ix[i];
1368 y = ix[i+1];
1369
1370 if(x > 14) { x = 15; bigv++; }
1371 if(y > 14) { y = 15; bigv++; }
1372
1373 sum += tab1624[x * 16 + y];
1374 }
1375
1376 sum0 = (sum >> 16) + bigv * ht_big[table0].linbits;
1377 sum1 = (sum & 0xffff) + bigv * ht_big[table1].linbits;
1378
1379 if(sum0 <= sum1)
1380 {
1381 *bits = sum0;
1382 return table0;
1383 }
1384 else
1385 {
1386 *bits = sum1;
1387 return table1;
1388 }
1389 }
1390
1391 /*************************************************************************/
1392 /* Function: Calculation of rzero, count1, address3 */
1393 /* (Partitions ix into big values, quadruples and zeros). */
1394 /*************************************************************************/
1395 static int calc_runlen( short *ix, side_info_t *si )
1396 {
1397 int p, i, sum = 0;
1398
1399 for(i=SAMPL2; i-=2; )
1400 if(*(uint32_t*)&ix[i-2]) /* !!!! short *ix; !!!!! */
1401 break;
1402
1403 si->count1 = 0;
1404
1405 for( ; i>3; i-=4)
1406 {
1407 int v = ix[i-1];
1408 int w = ix[i-2];
1409 int x = ix[i-3];
1410 int y = ix[i-4];
1411
1412 if((v | w | x | y) <= 1)
1413 {
1414 p = (y<<3) + (x<<2) + (w<<1) + (v);
1415
1416 sum += tab01[p];
1417
1418 si->count1++;
1419 }
1420 else break;
1421 }
1422
1423 si->address3 = i;
1424
1425 if((sum >> 16) < (sum & 0xffff))
1426 {
1427 si->table_select[3] = 0;
1428 return sum >> 16;
1429 }
1430 else
1431 {
1432 si->table_select[3] = 1;
1433 return sum & 0xffff;
1434 }
1435 }
1436
1437
1438 /*************************************************************************/
1439 /* Function: Quantization of the vector xr ( -> ix) */
1440 /*************************************************************************/
1441 static int quantize_int(int *xr, short *ix, side_info_t *si)
1442 {
1443 unsigned int i, idx, s, frac_pow[] = { 0x10000, 0xd745, 0xb505, 0x9838 };
1444
1445 s = frac_pow[si->quantStep & 3] >> si->quantStep / 4;
1446
1447 /* check for possible 'out of range' values */
1448 if(((si->max_val + 256) >> 8) * s >= (65536 << 8))
1449 return 0;
1450
1451 if(((si->max_val + 256) >> 8) * s < (4096 << 8))
1452 { /* all values fit the table size */
1453 for(i=SAMPL2; i--; )
1454 ix[i] = int2idx[(xr[i] * s + 0x8000) >> 16];
1455 }
1456 else
1457 { /* check each index wether it fits the table */
1458 for(i=SAMPL2; i--; )
1459 {
1460 idx = (xr[i] * s + 0x08000) >> 16;
1461
1462 if(idx > 4095) ix[i] = int2idx[(idx + 8) >> 4] << 3;
1463 else ix[i] = int2idx[idx];
1464 }
1465 }
1466
1467 return 1;
1468 }
1469
1470 /*************************************************************************/
1471 /* subdivides the bigvalue region which will use separate Huffman tables */
1472 /*************************************************************************/
1473 static void subdivide(side_info_t *si)
1474 {
1475 int scfb, count0, count1;
1476
1477 if( !si->address3 )
1478 { /* no bigvalue region */
1479 si->region_0_1 = 0;
1480 si->address1 = 0;
1481 si->address2 = 0;
1482 }
1483 else
1484 {
1485 /* Calculate scale factor band index */
1486 for(scfb=0; scalefac[scfb] < si->address3; )
1487 scfb++;
1488
1489 count0 = subdv_table[scfb].region0_cnt;
1490 count1 = subdv_table[scfb].region1_cnt;
1491
1492 si->region_0_1 = (count0 << 3) | count1;
1493 si->address1 = scalefac[count0 + 1];
1494 si->address2 = scalefac[count0 + 1 + count1 + 1];
1495 }
1496 }
1497
1498 /*******************************************************************/
1499 /* Count the number of bits necessary to code the bigvalues region */
1500 /*******************************************************************/
1501 static int bigv_bitcount(short *ix, side_info_t *gi)
1502 {
1503 int b1=0, b2=0, b3=0;
1504
1505 /* Select huffman code tables for bigvalues regions */
1506 gi->table_select[0] = 0;
1507 gi->table_select[1] = 0;
1508 gi->table_select[2] = 0;
1509
1510 if( gi->address1 > 0 ) /* region0 */
1511 gi->table_select[0] = choose_table(ix, 0 , gi->address1, &b1);
1512
1513 if( gi->address2 > gi->address1 ) /* region1 */
1514 gi->table_select[1] = choose_table(ix, gi->address1, gi->address2, &b2);
1515
1516 if( gi->address3 > gi->address2 ) /* region2 */
1517 gi->table_select[2] = choose_table(ix, gi->address2, gi->address3, &b3);
1518
1519 return b1+b2+b3;
1520 }
1521
1522 static int quantize_and_count_bits(int *xr, short *ix, side_info_t *si)
1523 {
1524 int bits = 10000;
1525
1526 if(quantize_int(xr, ix, si))
1527 {
1528 bits = calc_runlen(ix, si); /* rzero,count1,address3 */
1529 subdivide(si); /* bigvalues sfb division */
1530 bits += bigv_bitcount(ix,si); /* bit count */
1531 }
1532
1533 return bits;
1534 }
1535
1536 /************************************************************************/
1537 /* The code selects the best quantStep for a particular set of scalefacs*/
1538 /************************************************************************/
1539 static int inner_loop(int *xr, int max_bits, side_info_t *si)
1540 {
1541 int bits;
1542
1543 while((bits=quantize_and_count_bits(xr, enc_data, si)) < max_bits-64)
1544 {
1545 if(si->quantStep == 0)
1546 break;
1547
1548 if(si->quantStep <= 2)
1549 si->quantStep = 0;
1550 else
1551 si->quantStep -= 2;
1552 }
1553
1554 while(bits > max_bits)
1555 {
1556 si->quantStep++;
1557 bits = quantize_and_count_bits(xr, enc_data, si);
1558 }
1559
1560 return bits;
1561 }
1562
1563 static void iteration_loop(int *xr, side_info_t *si, int gr_cnt)
1564 {
1565 int remain, tar_bits, max_bits = cfg.mean_bits;
1566
1567 /* distribute reserved bits to remaining granules */
1568 tar_bits = max_bits + (cfg.ResvSize / gr_cnt & ~7);
1569 if(tar_bits > max_bits + max_bits/2)
1570 tar_bits = max_bits + max_bits/2;
1571
1572 si->part2_3_length = inner_loop(xr, tar_bits, si);
1573 si->global_gain = si->quantStep + 142 - si->additStep;
1574
1575 /* unused bits of the reservoir can be used for remaining granules */
1576 cfg.ResvSize += max_bits - si->part2_3_length;
1577
1578 /* end: distribute the reserved bits to one or two granules */
1579 if(gr_cnt == 1)
1580 {
1581 si->part2_3_length += cfg.ResvSize;
1582 /* mp3 format allows max 12bits for granule length */
1583 if(si->part2_3_length > 4092)
1584 {
1585 remain = (si->part2_3_length - 4092 + 31) >> 5;
1586 si->part2_3_length -= remain << 5;
1587 si[-1].part2_3_length += remain << 5;
1588
1589 while(remain--)
1590 putbits(~0, 32);
1591 }
1592 }
1593 }
1594
1595
1596 /* returns sum_j=0^31 a[j]*cos(PI*j*(k+1/2)/32), 0<=k<32 */
1597 void window_subband1(short *wk, int sb0[SBLIMIT], int sb1[SBLIMIT]) ICODE_ATTR;
1598 void window_subband1(short *wk, int sb0[SBLIMIT], int sb1[SBLIMIT])
1599 {
1600 int k, i, u, v;
1601 short *x1, *x2;
1602 short const *wp;
1603
1604 #ifdef CPU_COLDFIRE
1605 int s0, s1, t0, t1;
1606
1607 for(k=0; k<18; k++, wk+=64, sb0+=SBLIMIT, sb1+=SBLIMIT)
1608 {
1609 wp = enwindow;
1610 x1 = wk;
1611 x2 = x1 - 124;
1612
1613 for(i=-15; i<0; i++)
1614 {
1615 asm volatile(
1616 "move.l (-224*4,%[x2]), %%d4\n" /* d4 = x2[-224] */
1617 "movem.l (%[wp]), %%d0-%%d3\n" /* load 8 values */
1618 "mac.w %%d0u, %%d4u, %%acc0\n"
1619 "mac.w %%d0u, %%d4l, (-160*4,%[x2]), %%d4, %%acc1\n"
1620 "mac.w %%d0l, %%d4u, %%acc0\n"
1621 "mac.w %%d0l, %%d4l, ( -96*4,%[x2]), %%d4, %%acc1\n"
1622 "mac.w %%d1u, %%d4u, %%acc0\n"
1623 "mac.w %%d1u, %%d4l, ( -32*4,%[x2]), %%d4, %%acc1\n"
1624 "mac.w %%d1l, %%d4u, %%acc0\n"
1625 "mac.w %%d1l, %%d4l, ( 32*4,%[x2]), %%d4, %%acc1\n"
1626 "mac.w %%d2u, %%d4u, %%acc0\n"
1627 "mac.w %%d2u, %%d4l, ( 96*4,%[x2]), %%d4, %%acc1\n"
1628 "mac.w %%d2l, %%d4u, %%acc0\n"
1629 "mac.w %%d2l, %%d4l, ( 160*4,%[x2]), %%d4, %%acc1\n"
1630 "mac.w %%d3u, %%d4u, %%acc0\n"
1631 "mac.w %%d3u, %%d4l, ( 224*4,%[x2]), %%d4, %%acc1\n"
1632 "mac.w %%d3l, %%d4u, %%acc0\n"
1633 "mac.w %%d3l, %%d4l, (-256*4,%[x1]), %%d4, %%acc1\n"
1634 "movem.l (16,%[wp]), %%d0-%%d3\n" /* load 8 values */
1635 "mac.w %%d0u, %%d4u, %%acc0\n"
1636 "mac.w %%d0u, %%d4l, (-192*4,%[x1]), %%d4, %%acc1\n"
1637 "mac.w %%d0l, %%d4u, %%acc0\n"
1638 "mac.w %%d0l, %%d4l, (-128*4,%[x1]), %%d4, %%acc1\n"
1639 "mac.w %%d1u, %%d4u, %%acc0\n"
1640 "mac.w %%d1u, %%d4l, ( -64*4,%[x1]), %%d4, %%acc1\n"
1641 "mac.w %%d1l, %%d4u, %%acc0\n"
1642 "mac.w %%d1l, %%d4l, ( 0*4,%[x1]), %%d4, %%acc1\n"
1643 "mac.w %%d2u, %%d4u, %%acc0\n"
1644 "mac.w %%d2u, %%d4l, ( 64*4,%[x1]), %%d4, %%acc1\n"
1645 "mac.w %%d2l, %%d4u, %%acc0\n"
1646 "mac.w %%d2l, %%d4l, ( 128*4,%[x1]), %%d4, %%acc1\n"
1647 "mac.w %%d3u, %%d4u, %%acc0\n"
1648 "mac.w %%d3u, %%d4l, ( 192*4,%[x1]), %%d4, %%acc1\n"
1649 "mac.w %%d3l, %%d4u, %%acc0\n"
1650 "mac.w %%d3l, %%d4l, ( 224*4,%[x1]), %%d4, %%acc1\n"
1651 "movclr.l %%acc0, %%d0\n"
1652 "move.l %%d0, %[s0]\n"
1653 "movclr.l %%acc1, %%d0\n"
1654 "move.l %%d0, %[s1]\n"
1655
1656 "movem.l (%[wp]), %%d0-%%d3\n" /* load 8 values */
1657 "mac.w %%d0u, %%d4u, %%acc0\n"
1658 "mac.w %%d0u, %%d4l, ( 160*4,%[x1]), %%d4, %%acc1\n"
1659 "mac.w %%d0l, %%d4u, %%acc0\n"
1660 "mac.w %%d0l, %%d4l, ( 96*4,%[x1]), %%d4, %%acc1\n"
1661 "mac.w %%d1u, %%d4u, %%acc0\n"
1662 "mac.w %%d1u, %%d4l, ( 32*4,%[x1]), %%d4, %%acc1\n"
1663 "mac.w %%d1l, %%d4u, %%acc0\n"
1664 "mac.w %%d1l, %%d4l, ( -32*4,%[x1]), %%d4, %%acc1\n"
1665 "mac.w %%d2u, %%d4u, %%acc0\n"
1666 "mac.w %%d2u, %%d4l, ( -96*4,%[x1]), %%d4, %%acc1\n"
1667 "mac.w %%d2l, %%d4u, %%acc0\n"
1668 "mac.w %%d2l, %%d4l, (-160*4,%[x1]), %%d4, %%acc1\n"
1669 "mac.w %%d3u, %%d4u, %%acc0\n"
1670 "mac.w %%d3u, %%d4l, (-224*4,%[x1]), %%d4, %%acc1\n"
1671 "mac.w %%d3l, %%d4u, %%acc0\n"
1672 "mac.w %%d3l, %%d4l, ( 256*4,%[x2]), %%d4, %%acc1\n"
1673 "movem.l (32,%[wp]), %%d0-%%d3\n" /* load 8 values */
1674 "mac.w %%d0u, %%d4u, %%acc0\n"
1675 "mac.w %%d0u, %%d4l, ( 192*4,%[x2]), %%d4, %%acc1\n"
1676 "mac.w %%d0l, %%d4u, %%acc0\n"
1677 "mac.w %%d0l, %%d4l, ( 128*4,%[x2]), %%d4, %%acc1\n"
1678 "mac.w %%d1u, %%d4u, %%acc0\n"
1679 "mac.w %%d1u, %%d4l, ( 64*4,%[x2]), %%d4, %%acc1\n"
1680 "mac.w %%d1l, %%d4u, %%acc0\n"
1681 "mac.w %%d1l, %%d4l, ( 0*4,%[x2]), %%d4, %%acc1\n"
1682 "mac.w %%d2u, %%d4u, %%acc0\n"
1683 "mac.w %%d2u, %%d4l, ( -64*4,%[x2]), %%d4, %%acc1\n"
1684 "mac.w %%d2l, %%d4u, %%acc0\n"
1685 "mac.w %%d2l, %%d4l, (-128*4,%[x2]), %%d4, %%acc1\n"
1686 "mac.w %%d3u, %%d4u, %%acc0\n"
1687 "mac.w %%d3u, %%d4l, (-192*4,%[x2]), %%d4, %%acc1\n"
1688 "mac.w %%d3l, %%d4u, %%acc0\n"
1689 "mac.w %%d3l, %%d4l, %%acc1\n"
1690 "movclr.l %%acc0, %%d0\n"
1691 "move.l %%d0, %[t0]\n"
1692 "movclr.l %%acc1, %%d0\n"
1693 "move.l %%d0, %[t1]\n"
1694
1695 : [x1] "+a" (x1), [x2] "+a" (x2), [s0] "+m" (s0), [t0] "+m" (t0),
1696 [s1] "+m" (s1), [t1] "+m" (t1)
1697 : [wp] "a" (wp) : "d0", "d1", "d2", "d3", "d4");
1698
1699 sb0[30+i*2] = shft4(t0) + shft13(s0) * wp[24];
1700 sb0[31+i*2] = shft13(t0) * wp[25] - shft13(s0) * wp[26];
1701 sb1[30+i*2] = shft4(t1) + shft13(s1) * wp[24];
1702 sb1[31+i*2] = shft13(t1) * wp[25] - shft13(s1) * wp[26];
1703 wp += 27;
1704 x1 -= 2;
1705 x2 += 2;
1706 }
1707
1708 asm volatile(
1709 "move.l ( -32*4,%[x1]), %%d4\n" /* d4 = x1[-32] */
1710 "movem.l (%[wp]), %%d0-%%d3\n" /* load 8 values */
1711
1712 "mac.w %%d0u, %%d4u, %%acc0\n"
1713 "mac.w %%d0u, %%d4l, ( -96*4,%[x1]), %%d4, %%acc1\n"
1714 "mac.w %%d0l, %%d4u, %%acc0\n"
1715 "mac.w %%d0l, %%d4l, (-160*4,%[x1]), %%d4, %%acc1\n"
1716 "mac.w %%d1u, %%d4u, %%acc0\n"
1717 "mac.w %%d1u, %%d4l, (-224*4,%[x1]), %%d4, %%acc1\n"
1718 "mac.w %%d1l, %%d4u, %%acc0\n"
1719 "mac.w %%d1l, %%d4l, ( 32*4,%[x1]), %%d4, %%acc1\n"
1720 "mac.w %%d2u, %%d4u, %%acc0\n"
1721 "mac.w %%d2u, %%d4l, ( 96*4,%[x1]), %%d4, %%acc1\n"
1722 "mac.w %%d2l, %%d4u, %%acc0\n"
1723 "mac.w %%d2l, %%d4l, ( 160*4,%[x1]), %%d4, %%acc1\n"
1724 "mac.w %%d3u, %%d4u, %%acc0\n"
1725 "mac.w %%d3u, %%d4l, ( 224*4,%[x1]), %%d4, %%acc1\n"
1726 "mac.w %%d3l, %%d4u, %%acc0\n"
1727 "mac.w %%d3l, %%d4l, ( -16*4,%[x1]), %%d4, %%acc1\n"
1728 "movclr.l %%acc0, %%d0\n"
1729 "move.l %%d0, %[s0]\n"
1730 "movclr.l %%acc1, %%d0\n"
1731 "move.l %%d0, %[s1]\n"
1732
1733 "movem.l (16,%[wp]), %%d0-%%d3\n" /* load 8 values */
1734 "mac.w %%d0u, %%d4u, %%acc0\n"
1735 "mac.w %%d0u, %%d4l, ( -48*4,%[x1]), %%d4, %%acc1\n"
1736 "mac.w %%d1u, %%d4u, %%acc0\n"
1737 "mac.w %%d1u, %%d4l, ( 16*4,%[x1]), %%d4, %%acc1\n"
1738 "mac.w %%d1l, %%d4u, %%acc0\n"
1739 "mac.w %%d1l, %%d4l, ( -80*4,%[x1]), %%d4, %%acc1\n"
1740 "mac.w %%d2u, %%d4u, %%acc0\n"
1741 "mac.w %%d2u, %%d4l, ( 48*4,%[x1]), %%d4, %%acc1\n"
1742 "mac.w %%d2u, %%d4u, %%acc0\n"
1743 "mac.w %%d2u, %%d4l, (-112*4,%[x1]), %%d4, %%acc1\n"
1744 "mac.w %%d3u, %%d4u, %%acc0\n"
1745 "mac.w %%d3u, %%d4l, ( 80*4,%[x1]), %%d4, %%acc1\n"
1746 "mac.w %%d3l, %%d4u, %%acc0\n"
1747 "mac.w %%d3l, %%d4l, (-144*4,%[x1]), %%d4, %%acc1\n"
1748 "movem.l (32,%[wp]), %%d0-%%d3\n" /* load 8 values */
1749 "mac.w %%d0u, %%d4u, %%acc0\n"
1750 "mac.w %%d0u, %%d4l, ( 112*4,%[x1]), %%d4, %%acc1\n"
1751 "mac.w %%d0u, %%d4u, %%acc0\n"
1752 "mac.w %%d0u, %%d4l, (-176*4,%[x1]), %%d4, %%acc1\n"
1753 "mac.w %%d1u, %%d4u, %%acc0\n"
1754 "mac.w %%d1u, %%d4l, ( 144*4,%[x1]), %%d4, %%acc1\n"
1755 "mac.w %%d1l, %%d4u, %%acc0\n"
1756 "mac.w %%d1l, %%d4l, (-208*4,%[x1]), %%d4, %%acc1\n"
1757 "mac.w %%d2u, %%d4u, %%acc0\n"
1758 "mac.w %%d2u, %%d4l, ( 176*4,%[x1]), %%d4, %%acc1\n"
1759 "mac.w %%d2u, %%d4u, %%acc0\n"
1760 "mac.w %%d2u, %%d4l, (-240*4,%[x1]), %%d4, %%acc1\n"
1761 "mac.w %%d3u, %%d4u, %%acc0\n"
1762 "mac.w %%d3u, %%d4l, ( 208*4,%[x1]), %%d4, %%acc1\n"
1763 "mac.w %%d3l, %%d4u, %%acc0\n"
1764 "mac.w %%d3l, %%d4l, %%acc1\n"
1765 "movclr.l %%acc0, %%d0\n"
1766 "move.l %%d0, %[t0]\n"
1767 "movclr.l %%acc1, %%d0\n"
1768 "move.l %%d0, %[t1]\n"
1769
1770 : [x1] "+a" (x1), [s0] "+m" (s0), [t0] "+m" (t0),
1771 [s1] "+m" (s1), [t1] "+m" (t1)
1772 : [wp] "a" (wp) : "d0", "d1", "d2", "d3", "d4");
1773
1774 u = shft4(s0 - t0);
1775 v = shft4(s0 + t0);
1776 t0 = sb0[14];
1777 s0 = sb0[15] - t0;
1778
1779 sb0[31] = v + t0; /* A0 */
1780 sb0[30] = u + s0; /* A1 */
1781 sb0[15] = u - s0; /* A2 */
1782 sb0[14] = v - t0; /* A3 */
1783
1784 u = shft4(s1 - t1);
1785 v = shft4(s1 + t1);
1786 t1 = sb1[14];
1787 s1 = sb1[15] - t1;
1788
1789 sb1[31] = v + t1; /* A0 */
1790 sb1[30] = u + s1; /* A1 */
1791 sb1[15] = u - s1; /* A2 */
1792 sb1[14] = v - t1; /* A3 */
1793 }
1794 #else
1795 int ch, s, t, *a;
1796
1797 for(ch=0; ch<cfg.channels; ch++)
1798 {
1799 a = ch ? sb1 : sb0;
1800 for(k=0; k<18; k++, wk+=64, a+=SBLIMIT)
1801 {
1802 wp = enwindow;
1803 x1 = wk;
1804 x2 = x1 - 124;
1805
1806 /* x1[-572] .... x1[448] = 1022 */
1807 /* 18*4*16*32 */
1808 for(i=-15; i<0; i++)
1809 {
1810 s = (int)x2[-224*2] * wp[ 0]; t = (int)x1[ 224*2] * wp[ 0];
1811 s += (int)x2[-160*2] * wp[ 1]; t += (int)x1[ 160*2] * wp[ 1];
1812 s += (int)x2[- 96*2] * wp[ 2]; t += (int)x1[ 96*2] * wp[ 2];
1813 s += (int)x2[- 32*2] * wp[ 3]; t += (int)x1[ 32*2] * wp[ 3];
1814 s += (int)x2[ 32*2] * wp[ 4]; t += (int)x1[- 32*2] * wp[ 4];
1815 s += (int)x2[ 96*2] * wp[ 5]; t += (int)x1[- 96*2] * wp[ 5];
1816 s += (int)x2[ 160*2] * wp[ 6]; t += (int)x1[-160*2] * wp[ 6];
1817 s += (int)x2[ 224*2] * wp[ 7]; t += (int)x1[-224*2] * wp[ 7];
1818 s += (int)x1[-256*2] * wp[ 8]; t += (int)x2[ 256*2] * wp[16];
1819 s += (int)x1[-192*2] * wp[ 9]; t += (int)x2[ 192*2] * wp[17];
1820 s += (int)x1[-128*2] * wp[10]; t += (int)x2[ 128*2] * wp[18];
1821 s += (int)x1[- 64*2] * wp[11]; t += (int)x2[ 64*2] * wp[19];
1822 s += (int)x1[ 0*2] * wp[12]; t += (int)x2[ 0*2] * wp[20];
1823 s += (int)x1[ 64*2] * wp[13]; t += (int)x2[- 64*2] * wp[21];
1824 s += (int)x1[ 128*2] * wp[14]; t += (int)x2[-128*2] * wp[22];
1825 s += (int)x1[ 192*2] * wp[15]; t += (int)x2[-192*2] * wp[23];
1826
1827 a[30+i*2] = shft4(t) + shft13(s) * wp[24];
1828 a[31+i*2] = shft13(t) * wp[25] - shft13(s) * wp[26];
1829 wp += 27;
1830 x1 -= 2;
1831 x2 += 2;
1832 }
1833
1834 t = (int)x1[- 16*2] * wp[ 8]; s = (int)x1[ -32*2] * wp[0];
1835 t += ((int)x1[- 48*2]-x1[ 16*2]) * wp[10]; s += (int)x1[ -96*2] * wp[1];
1836 t += ((int)x1[- 80*2]+x1[ 48*2]) * wp[12]; s += (int)x1[-160*2] * wp[2];
1837 t += ((int)x1[-112*2]-x1[ 80*2]) * wp[14]; s += (int)x1[-224*2] * wp[3];
1838 t += ((int)x1[-144*2]+x1[112*2]) * wp[16]; s += (int)x1[ 32*2] * wp[4];
1839 t += ((int)x1[-176*2]-x1[144*2]) * wp[18]; s += (int)x1[ 96*2] * wp[5];
1840 t += ((int)x1[-208*2]+x1[176*2]) * wp[20]; s += (int)x1[ 160*2] * wp[6];
1841 t += ((int)x1[-240*2]-x1[208*2]) * wp[22]; s += (int)x1[ 224*2] * wp[7];
1842
1843 u = shft4(s - t);
1844 v = shft4(s + t);
1845 t = a[14];
1846 s = a[15] - t;
1847
1848 a[31] = v + t; /* A0 */
1849 a[30] = u + s; /* A1 */
1850 a[15] = u - s; /* A2 */
1851 a[14] = v - t; /* A3 */
1852 }
1853 wk -= 18 * 64 - 1; /* rewind wk (to next channel start) */
1854 }
1855 #endif
1856 }
1857
1858 void window_subband2(short *x1, int a[SBLIMIT]) ICODE_ATTR;
1859 void window_subband2(short *x1, int a[SBLIMIT])
1860 {
1861 int xr;
1862 short const *wp = enwindow;
1863 short *x2 = x1 - 124;
1864
1865 wp += 27 * 15;
1866 x1 -= 2 * 15;
1867 x2 += 2 * 15;
1868
1869 xr = a[28] - a[0]; a[0] += a[28]; a[28] = shft9(xr) * wp[-2*27+25];
1870 xr = a[29] - a[1]; a[1] += a[29]; a[29] = shft9(xr) * wp[-2*27+25];
1871 xr = a[26] - a[2]; a[2] += a[26]; a[26] = shft9(xr) * wp[-4*27+25];
1872 xr = a[27] - a[3]; a[3] += a[27]; a[27] = shft9(xr) * wp[-4*27+25];
1873 xr = a[24] - a[4]; a[4] += a[24]; a[24] = shft9(xr) * wp[-6*27+25];
1874 xr = a[25] - a[5]; a[5] += a[25]; a[25] = shft9(xr) * wp[-6*27+25];
1875 xr = a[22] - a[6]; a[6] += a[22]; a[22] = shft9(xr) * SQRT ;
1876 xr = a[23] - a[7]; a[7] += a[23]; a[23] = shft9(xr) * SQRT - a[7];
1877 a[ 7] -= a[ 6];
1878 a[22] -= a[ 7];
1879 a[23] -= a[22];
1880
1881 xr = a[ 6]; a[ 6] = a[31] - xr; a[31] = a[31] + xr;
1882 xr = a[ 7]; a[ 7] = a[30] - xr; a[30] = a[30] + xr;
1883 xr = a[22]; a[22] = a[15] - xr; a[15] = a[15] + xr;
1884 xr = a[23]; a[23] = a[14] - xr; a[14] = a[14] + xr;
1885
1886 xr = a[20] - a[ 8]; a[ 8] += a[20]; a[20] = shft9(xr) * wp[-10*27+25];
1887 xr = a[21] - a[ 9]; a[ 9] += a[21]; a[21] = shft9(xr) * wp[-10*27+25];
1888 xr = a[18] - a[10]; a[10] += a[18]; a[18] = shft9(xr) * wp[-12*27+25];
1889 xr = a[19] - a[11]; a[11] += a[19]; a[19] = shft9(xr) * wp[-12*27+25];
1890 xr = a[16] - a[12]; a[12] += a[16]; a[16] = shft9(xr) * wp[-14*27+25];
1891 xr = a[17] - a[13]; a[13] += a[17]; a[17] = shft9(xr) * wp[-14*27+25];
1892 xr =-a[20] + a[24]; a[20] += a[24]; a[24] = shft9(xr) * wp[-12*27+25];
1893 xr =-a[21] + a[25]; a[21] += a[25]; a[25] = shft9(xr) * wp[-12*27+25];
1894 xr = a[ 4] - a[ 8]; a[ 4] += a[ 8]; a[ 8] = shft9(xr) * wp[-12*27+25];
1895 xr = a[ 5] - a[ 9]; a[ 5] += a[ 9]; a[ 9] = shft9(xr) * wp[-12*27+25];
1896 xr = a[ 0] - a[12]; a[ 0] += a[12]; a[12] = shft9(xr) * wp[ -4*27+25];
1897 xr = a[ 1] - a[13]; a[ 1] += a[13]; a[13] = shft9(xr) * wp[ -4*27+25];
1898 xr = a[16] - a[28]; a[16] += a[28]; a[28] = shft9(xr) * wp[ -4*27+25];
1899 xr =-a[17] + a[29]; a[17] += a[29]; a[29] = shft9(xr) * wp[ -4*27+25];
1900
1901 xr = SQRT * shft9(a[ 2] - a[10]); a[ 2] += a[10]; a[10] = xr;
1902 xr = SQRT * shft9(a[ 3] - a[11]); a[ 3] += a[11]; a[11] = xr;
1903 xr = SQRT * shft9(a[26] - a[18]); a[18] += a[26]; a[26] = xr - a[18];
1904 xr = SQRT * shft9(a[27] - a[19]); a[19] += a[27]; a[27] = xr - a[19];
1905
1906 xr = a[ 2]; a[19] -= a[ 3]; a[ 3] -= xr; a[ 2] = a[31] - xr; a[31] += xr;
1907 xr = a[ 3]; a[11] -= a[19]; a[18] -= xr; a[ 3] = a[30] - xr; a[30] += xr;
1908 xr = a[18]; a[27] -= a[11]; a[19] -= xr; a[18] = a[15] - xr; a[15] += xr;
1909
1910 xr = a[19]; a[10] -= xr; a[19] = a[14] - xr; a[14] += xr;
1911 xr = a[10]; a[11] -= xr; a[10] = a[23] - xr; a[23] += xr;
1912 xr = a[11]; a[26] -= xr; a[11] = a[22] - xr; a[22] += xr;
1913 xr = a[26]; a[27] -= xr; a[26] = a[ 7] - xr; a[ 7] += xr;
1914
1915 xr = a[27]; a[27] = a[6] - xr; a[6] += xr;
1916
1917 xr = SQRT * shft9(a[ 0] - a[ 4]); a[ 0] += a[ 4]; a[ 4] = xr;
1918 xr = SQRT * shft9(a[ 1] - a[ 5]); a[ 1] += a[ 5]; a[ 5] = xr;
1919 xr = SQRT * shft9(a[16] - a[20]); a[16] += a[20]; a[20] = xr;
1920 xr = SQRT * shft9(a[17] - a[21]); a[17] += a[21]; a[21] = xr;
1921 xr =-SQRT * shft9(a[ 8] - a[12]); a[ 8] += a[12]; a[12] = xr - a[ 8];
1922 xr =-SQRT * shft9(a[ 9] - a[13]); a[ 9] += a[13]; a[13] = xr - a[ 9];
1923 xr =-SQRT * shft9(a[25] - a[29]); a[25] += a[29]; a[29] = xr - a[25];
1924 xr =-SQRT * shft9(a[24] + a[28]); a[24] -= a[28]; a[28] = xr - a[24];
1925
1926 xr = a[24] - a[16]; a[24] = xr;
1927 xr = a[20] - xr; a[20] = xr;
1928 xr = a[28] - xr; a[28] = xr;
1929
1930 xr = a[25] - a[17]; a[25] = xr;
1931 xr = a[21] - xr; a[21] = xr;
1932 xr = a[29] - xr; a[29] = xr;
1933
1934 xr = a[17] - a[1]; a[17] = xr;
1935 xr = a[ 9] - xr; a[ 9] = xr;
1936 xr = a[25] - xr; a[25] = xr;
1937 xr = a[ 5] - xr; a[ 5] = xr;
1938 xr = a[21] - xr; a[21] = xr;
1939 xr = a[13] - xr; a[13] = xr;
1940 xr = a[29] - xr; a[29] = xr;
1941
1942 xr = a[ 1] - a[0]; a[ 1] = xr;
1943 xr = a[16] - xr; a[16] = xr;
1944 xr = a[17] - xr; a[17] = xr;
1945 xr = a[ 8] - xr; a[ 8] = xr;
1946 xr = a[ 9] - xr; a[ 9] = xr;
1947 xr = a[24] - xr; a[24] = xr;
1948 xr = a[25] - xr; a[25] = xr;
1949 xr = a[ 4] - xr; a[ 4] = xr;
1950 xr = a[ 5] - xr; a[ 5] = xr;
1951 xr = a[20] - xr; a[20] = xr;
1952 xr = a[21] - xr; a[21] = xr;
1953 xr = a[12] - xr; a[12] = xr;
1954 xr = a[13] - xr; a[13] = xr;
1955 xr = a[28] - xr; a[28] = xr;
1956 xr = a[29] - xr; a[29] = xr;
1957
1958 xr = a[ 0]; a[ 0] += a[31]; a[31] -= xr;
1959 xr = a[ 1]; a[ 1] += a[30]; a[30] -= xr;
1960 xr = a[16]; a[16] += a[15]; a[15] -= xr;
1961 xr = a[17]; a[17] += a[14]; a[14] -= xr;
1962 xr = a[ 8]; a[ 8] += a[23]; a[23] -= xr;
1963 xr = a[ 9]; a[ 9] += a[22]; a[22] -= xr;
1964 xr = a[24]; a[24] += a[ 7]; a[ 7] -= xr;
1965 xr = a[25]; a[25] += a[ 6]; a[ 6] -= xr;
1966 xr = a[ 4]; a[ 4] += a[27]; a[27] -= xr;
1967 xr = a[ 5]; a[ 5] += a[26]; a[26] -= xr;
1968 xr = a[20]; a[20] += a[11]; a[11] -= xr;
1969 xr = a[21]; a[21] += a[10]; a[10] -= xr;
1970 xr = a[12]; a[12] += a[19]; a[19] -= xr;
1971 xr = a[13]; a[13] += a[18]; a[18] -= xr;
1972 xr = a[28]; a[28] += a[ 3]; a[ 3] -= xr;
1973 xr = a[29]; a[29] += a[ 2]; a[ 2] -= xr;
1974 }
1975
1976 void mdct_long(int *out, int *in) ICODE_ATTR;
1977 void mdct_long(int *out, int *in)
1978 {
1979 int ct,st;
1980 int tc1, tc2, tc3, tc4, ts5, ts6, ts7, ts8;
1981 int ts1, ts2, ts3, ts4, tc5, tc6, tc7, tc8;
1982
1983 /* 1,2, 5,6, 9,10, 13,14, 17 */
1984 tc1 = in[17] - in[ 9];
1985 tc3 = in[15] - in[11];
1986 tc4 = in[14] - in[12];
1987 ts5 = in[ 0] + in[ 8];
1988 ts6 = in[ 1] + in[ 7];
1989 ts7 = in[ 2] + in[ 6];
1990 ts8 = in[ 3] + in[ 5];
1991
1992 out[17] = (ts5 + ts7 - ts8) * cx[8] - (ts6 - in[4]) * cx[8];
1993 st = (ts5 + ts7 - ts8) * cx[7] + (ts6 - in[4]) * cx[8];
1994 ct = (tc1 - tc3 - tc4) * cx[6];
1995 out[5] = ct + st;
1996 out[6] = ct - st;
1997
1998 tc2 = (in[16] - in[10]) * cx[6];
1999 ts6 = ts6 * cx[7] + in[4] * cx[8];
2000
2001 ct = tc1 * cx[0] + tc2 + tc3 * cx[1] + tc4 * cx[2];
2002 st = -ts5 * cx[4] + ts6 - ts7 * cx[5] + ts8 * cx[3];
2003 out[1] = ct + st;
2004 out[2] = ct - st;
2005
2006 ct = tc1 * cx[1] - tc2 - tc3 * cx[2] + tc4 * cx[0];
2007 st = -ts5 * cx[5] + ts6 - ts7 * cx[3] + ts8 * cx[4];
2008 out[ 9] = ct + st;
2009 out[10] = ct - st;
2010
2011 ct = tc1 * cx[2] - tc2 + tc3 * cx[0] - tc4 * cx[1];
2012 st = ts5 * cx[3] - ts6 + ts7 * cx[4] - ts8 * cx[5];
2013 out[13] = ct + st;
2014 out[14] = ct - st;
2015
2016 ts1 = in[ 8] - in[ 0];
2017 ts3 = in[ 6] - in[ 2];
2018 ts4 = in[ 5] - in[ 3];
2019 tc5 = in[17] + in[ 9];
2020 tc6 = in[16] + in[10];
2021 tc7 = in[15] + in[11];
2022 tc8 = in[14] + in[12];
2023
2024 out[0] = (tc5 + tc7 + tc8) * cx[8] + (tc6 + in[13]) * cx[8];
2025 ct = (tc5 + tc7 + tc8) * cx[7] - (tc6 + in[13]) * cx[8];
2026 st = (ts1 - ts3 + ts4) * cx[6];
2027 out[11] = ct + st;
2028 out[12] = ct - st;
2029
2030 ts2 = (in[7] - in[1]) * cx[6];
2031 tc6 = in[13] * cx[8] - tc6 * cx[7];
2032
2033 ct = tc5 * cx[3] - tc6 + tc7 * cx[4] + tc8 * cx[5];
2034 st = ts1 * cx[2] + ts2 + ts3 * cx[0] + ts4 * cx[1];
2035 out[3] = ct + st;
2036 out[4] = ct - st;
2037
2038 ct =-tc5 * cx[5] + tc6 - tc7 * cx[3] - tc8 * cx[4];
2039 st = ts1 * cx[1] + ts2 - ts3 * cx[2] - ts4 * cx[0];
2040 out[7] = ct + st;
2041 out[8] = ct - st;
2042
2043 ct =-tc5 * cx[4] + tc6 - tc7 * cx[5] - tc8 * cx[3];
2044 st = ts1 * cx[0] - ts2 + ts3 * cx[1] - ts4 * cx[2];
2045 out[15] = ct + st;
2046 out[16] = ct - st;
2047 }
2048
2049 static int find_bitrate_index(int type, uint16_t bitrate)
2050 {
2051 int i;
2052
2053 for(i=0;i<14;i++)
2054 if(bitrate == bitr_index[type][i])
2055 break;
2056
2057 return i;
2058 }
2059
2060 static int find_samplerate_index(uint16_t freq, int *mp3_type)
2061 {
2062 int mpg, rate;
2063
2064 /* set default values: MPEG1 at 44100/s */
2065 *mp3_type = 1;
2066
2067 for(mpg=0; mpg<2; mpg++)
2068 for(rate=0; rate<3; rate++)
2069 if(freq == sampr_index[mpg][rate])
2070 { *mp3_type = mpg; return rate; }
2071
2072 return 0;
2073 }
2074
2075 static void init_mp3_encoder_engine(bool stereo, int bitrate, uint16_t sample_rate)
2076 {
2077 uint32_t avg_byte_per_frame;
2078
2079 #ifdef ROCKBOX_LITTLE_ENDIAN
2080 cfg.byte_order = order_littleEndian;
2081 #else
2082 cfg.byte_order = order_bigEndian;
2083 #endif
2084
2085 cfg.samplerate = sample_rate;
2086 cfg.channels = stereo ? 2 : 1;
2087 cfg.mpg.mode = stereo ? 0 : 3; /* 0=stereo, 3=mono */
2088 cfg.mpg.bitrate = stereo ? bitrate : bitrate > 160 ? 160 : bitrate;
2089 cfg.mpg.smpl_id = find_samplerate_index(cfg.samplerate, &cfg.mpg.type);
2090 cfg.mpg.bitr_id = find_bitrate_index(cfg.mpg.type, cfg.mpg.bitrate);
2091 cfg.mpg.num_bands = num_bands[stereo ? cfg.mpg.type : 2][cfg.mpg.bitr_id];
2092
2093 if(0 == cfg.mpg.type)
2094 { /* use MPEG2 format */
2095 cfg.smpl_per_frm = MAX_SAMP_PER_FRAME/2;
2096 cfg.granules = 1;
2097 }
2098 else
2099 { /* use MPEG1 format */
2100 cfg.smpl_per_frm = MAX_SAMP_PER_FRAME;
2101 cfg.granules = 2;
2102 }
2103
2104 scalefac = sfBand[cfg.mpg.smpl_id + 3*cfg.mpg.type];
2105
2106 ht[ 0].table = NULL; ht[ 0].hlen = NULL; /* Apparently not used */
2107 ht[ 1].table = t1HB; ht[ 1].hlen = t1l;
2108 ht[ 2].table = t2HB; ht[ 2].hlen = t2l;
2109 ht[ 3].table = t3HB; ht[ 3].hlen = t3l;
2110 ht[ 4].table = NULL; ht[ 4].hlen = NULL; /* Apparently not used */
2111 ht[ 5].table = t5HB; ht[ 5].hlen = t5l;
2112 ht[ 6].table = t6HB; ht[ 6].hlen = t6l;
2113 ht[ 7].table = t7HB; ht[ 7].hlen = t7l;
2114 ht[ 8].table = t8HB; ht[ 8].hlen = t8l;
2115 ht[ 9].table = t9HB; ht[ 9].hlen = t9l;
2116 ht[10].table = t10HB; ht[10].hlen = t10l;
2117 ht[11].table = t11HB; ht[11].hlen = t11l;
2118 ht[12].table = t12HB; ht[12].hlen = t12l;
2119 ht[13].table = t13HB; ht[13].hlen = t13l;
2120 ht[14].table = NULL; ht[14].hlen = NULL; /* Apparently not used */
2121 ht[15].table = t15HB; ht[15].hlen = t15l;
2122
2123 /* Figure average number of 'bytes' per frame */
2124 avg_byte_per_frame = SAMPL2 * 16000 * cfg.mpg.bitrate / (2 - cfg.mpg.type);
2125 avg_byte_per_frame = avg_byte_per_frame / cfg.samplerate;
2126 cfg.byte_per_frame = avg_byte_per_frame / 64;
2127 cfg.frac_per_frame = avg_byte_per_frame & 63;
2128 cfg.slot_lag = 0;
2129 cfg.sideinfo_len = 32 + (cfg.mpg.type ? (cfg.channels == 1 ? 136 : 256)
2130 : (cfg.channels == 1 ? 72 : 136));
2131 }
2132
2133 static void set_scale_facs(int *mdct_freq)
2134 {
2135 unsigned int i, is, ie, k, s;
2136 int max_freq_val, avrg_freq_val;
2137
2138 /* calc average of first 256 frequency values */
2139 for(avrg_freq_val=i=0; i<256; i++)
2140 avrg_freq_val += mdct_freq[i];
2141 avrg_freq_val >>= 8;
2142
2143 /* if max of current band is smaller than average, increase precision */
2144 /* last band keeps untouched (not scaled) */
2145 for(is=k=0; is<scalefac[21]; k++)
2146 {
2147 max_freq_val = 0;
2148
2149 for(i=is, ie=scalefac[k+1]; i<ie; i++)
2150 if(max_freq_val < mdct_freq[i])
2151 max_freq_val = mdct_freq[i];
2152
2153 for(s=0; s<3; s++)
2154 if((max_freq_val<<s) > avrg_freq_val)
2155 break;
2156
2157 band_scale_f[k] = (unsigned char)s;
2158
2159 for(i=is; s && i<ie; i++)
2160 mdct_freq[i] <<= s;
2161
2162 is = ie;
2163 }
2164 }
2165
2166 static void compress(void)
2167 {
2168 int i, gr, gr_cnt;
2169 uint32_t max;
2170
2171 while(1)
2172 {
2173 if((frames & 7) == 0)
2174 { rb->lcd_clear_display();
2175 rb->lcd_putsxyf(4, 20, "Frame %d / %d", frames,
2176 wav_size/cfg.smpl_per_frm/cfg.channels/2);
2177 rb->lcd_update();
2178 }
2179 /* encode one mp3 frame in this loop */
2180 memset(CodedData.bbuf, 0, sizeof(CodedData.bbuf));
2181
2182 if((cfg.slot_lag += cfg.frac_per_frame) >= 64)
2183 { /* Padding for this frame */
2184 cfg.slot_lag -= 64;
2185 cfg.mpg.padding = 1;
2186 }
2187 else
2188 cfg.mpg.padding = 0;
2189
2190 cfg.mean_bits = (8 * cfg.byte_per_frame + 8 * cfg.mpg.padding
2191 - cfg.sideinfo_len) / cfg.granules / cfg.channels
2192 - 42; // reserved for scale_facs
2193
2194 /* shift out old samples */
2195 memcpy(mfbuf, mfbuf + 2*cfg.granules*576, 4*512);
2196
2197 /* read new samples to iram for further processing */
2198 if(read_samples((mfbuf + 2*512), cfg.smpl_per_frm) == 0)
2199 break;
2200
2201 /* swap bytes if neccessary */
2202 if(cfg.byte_order == order_bigEndian)
2203 for(i=0; i<cfg.smpl_per_frm; i++)
2204 {
2205 uint32_t t = ((uint32_t*)mfbuf)[512 + i];
2206 t = ((t >> 8) & 0xff00ff) | ((t << 8) & 0xff00ff00);
2207 ((uint32_t*)mfbuf)[512 + i] = t;
2208 }
2209
2210 cfg.ResvSize = 0;
2211 gr_cnt = cfg.granules * cfg.channels;
2212 CodedData.bitpos = cfg.sideinfo_len; /* leave space for mp3 header */
2213
2214 for(gr=0; gr<cfg.granules; gr++)
2215 {
2216 short *wk = mfbuf + 2*286 + gr*1152;
2217 int ch;
2218
2219 /* 16bit packed wav data can be windowed efficiently on coldfire */
2220 window_subband1(wk, sb_data[0][1-gr][0], sb_data[1][1-gr][0]);
2221
2222 for(ch=0; ch<cfg.channels; ch++)
2223 {
2224 int ii, k, shift;
2225
2226 wk = mfbuf + 2*286 + gr*1152 + ch;
2227
2228 /* 36864=4*18*16*32 */
2229 for(k=0; k<18; k++, wk+=64)
2230 {
2231 window_subband2(wk, sb_data[ch][1-gr][k]);
2232 /* Compensate for inversion in the analysis filter */
2233 if(k & 1)
2234 {
2235 int band;
2236 for(band=1; band<32; band+=2)
2237 sb_data[ch][1-gr][k][band] *= -1;
2238 }
2239 }
2240
2241 /* Perform imdct of 18 previous + 18 current subband samples */
2242 /* for integer precision do this loop again (if neccessary) */
2243 shift = 14 - (cfg.cod_info[gr][ch].additStep >> 2);
2244 for(k=1,ii=0; ii<3 && k; ii++)
2245 {
2246 int *mdct = mdct_freq;
2247 int band;
2248
2249 cfg.cod_info[gr][ch].additStep = 4 * (14 - shift);
2250 for(band=0; band<cfg.mpg.num_bands; band++, mdct+=18)
2251 {
2252 int *band0 = sb_data[ch][ gr][0] + order[band];
2253 int *band1 = sb_data[ch][1-gr][0] + order[band];
2254 int work[18];
2255
2256 /* 9216=4*32*9*8 */
2257 for(k=-9; k<0; k++)
2258 {
2259 int a = shft_n(band1[(k+9)*32], shift);
2260 int b = shft_n(band1[(8-k)*32], shift);
2261 int c = shft_n(band0[(k+9)*32], shift);
2262 int d = shft_n(band0[(8-k)*32], shift);
2263
2264 work[k+ 9] = shft16(a * win[k+ 9][0] +
2265 b * win[k+ 9][1] +
2266 c * win[k+ 9][2] +
2267 d * win[k+ 9][3]);
2268
2269 work[k+18] = shft16(c * win[k+18][0] +
2270 d * win[k+18][1] +
2271 a * win[k+18][2] +
2272 b * win[k+18][3]);
2273 }
2274
2275 /* 7200=4*18*100 */
2276 mdct_long(mdct, work);
2277
2278 /* Perform aliasing reduction butterfly */
2279 if(band != 0)
2280 {
2281 for(k=7; k>=0; --k)
2282 {
2283 int bu, bd;
2284 bu = shft15(mdct[k]) * ca[k] +
2285 shft15(mdct[-1-k]) * cs[k];
2286 bd = shft15(mdct[k]) * cs[k] -
2287 shft15(mdct[-1-k]) * ca[k];
2288 mdct[-1-k] = bu;
2289 mdct[ k ] = bd;
2290 }
2291 }
2292 }
2293
2294 max = 0;
2295 for(k=0; k<576; k++)
2296 {
2297 if(mdct_freq[k] < 0)
2298 {
2299 mdct_sign[k] = 1; /* negative */
2300 mdct_freq[k] = shft13(-mdct_freq[k]);
2301 }
2302 else
2303 {
2304 mdct_sign[k] = 0; /* positive */
2305 mdct_freq[k] = shft13(mdct_freq[k]);
2306 }
2307
2308 if(max < (uint32_t)mdct_freq[k])
2309 max = (uint32_t)mdct_freq[k];
2310 }
2311
2312 cfg.cod_info[gr][ch].max_val = max;
2313
2314 /* calc new shift for higher integer precision */
2315 for(k=0; max<(uint32_t)(0x7800>>k); k++) shift--;
2316 for( ; (max>>k)>=(uint32_t)0x10000; k++) shift++;
2317 if(shift < 0) shift = 0;
2318 }
2319
2320 cfg.cod_info[gr][ch].quantStep +=
2321 cfg.cod_info[gr][ch].additStep;
2322
2323 set_scale_facs(mdct_freq);
2324
2325 /* bit and noise allocation */
2326 iteration_loop(mdct_freq, &cfg.cod_info[gr][ch],
2327 gr_cnt--);
2328 /* write the frame to the bitstream */
2329 Huffmancodebits(enc_data, mdct_sign,
2330 &cfg.cod_info[gr][ch]);
2331
2332 cfg.cod_info[gr][ch].quantStep -=
2333 cfg.cod_info[gr][ch].additStep;
2334
2335 if(cfg.granules == 1)
2336 {
2337 memcpy(sb_data[ch][0], sb_data[ch][1],
2338 sizeof(sb_data[ch][0]));
2339 }
2340 }
2341 }
2342
2343 enc_size = (CodedData.bitpos + 7) >> 3;
2344 /* finish this chunk by adding sideinfo header data */
2345 CodedData.bitpos = 0;
2346 encodeSideInfo( cfg.cod_info );
2347
2348 if(cfg.byte_order != order_bigEndian)
2349 for(i=0; i<(enc_size+3)/4; i++)
2350 CodedData.bbuf[i] = myswap32(CodedData.bbuf[i]);
2351
2352 if(enc_chunk + enc_size > (int)enc_buffer_size)
2353 {
2354 /* copy iram mp3 buffer to sdram/file */
2355 rb->write(mp3file, enc_buffer, enc_chunk & ~3);
2356 memcpy(enc_buffer, enc_buffer + (enc_chunk >> 2), enc_chunk & 3);
2357 enc_chunk &= 3;
2358 }
2359
2360 memcpy(enc_buffer + enc_chunk, CodedData.bbuf, enc_size);
2361 enc_chunk += enc_size;
2362 frames++;
2363 }
2364 /* write last chunks to disk */
2365 rb->write(mp3file, enc_buffer, enc_chunk);
2366 }
2367
2368
2369 int num_file;
2370 char mp3_name[80];
2371
2372 static void get_mp3_filename(const char *wav_name)
2373 {
2374 rb->strlcpy(mp3_name, wav_name, sizeof(mp3_name));
2375 rb->strlcpy(mp3_name + rb->strlen(mp3_name) - 4, ".mp3", 5);
2376 }
2377
2378 #if CONFIG_KEYPAD == IRIVER_H100_PAD || CONFIG_KEYPAD == IRIVER_H300_PAD
2379 #define MP3ENC_PREV BUTTON_UP
2380 #define MP3ENC_NEXT BUTTON_DOWN
2381 #define MP3ENC_DONE BUTTON_OFF
2382 #define MP3ENC_SELECT BUTTON_SELECT
2383
2384 #elif (CONFIG_KEYPAD == IPOD_4G_PAD) || (CONFIG_KEYPAD == IPOD_3G_PAD) || \
2385 (CONFIG_KEYPAD == IPOD_1G2G_PAD)
2386 #define MP3ENC_PREV BUTTON_SCROLL_BACK
2387 #define MP3ENC_NEXT BUTTON_SCROLL_FWD
2388 #define MP3ENC_DONE BUTTON_MENU
2389 #define MP3ENC_SELECT BUTTON_SELECT
2390
2391 #elif CONFIG_KEYPAD == IAUDIO_X5M5_PAD
2392 #define MP3ENC_PREV BUTTON_UP
2393 #define MP3ENC_NEXT BUTTON_DOWN
2394 #define MP3ENC_DONE BUTTON_POWER
2395 #define MP3ENC_SELECT BUTTON_SELECT
2396
2397 #elif CONFIG_KEYPAD == GIGABEAT_PAD || \
2398 CONFIG_KEYPAD == SAMSUNG_YPR0_PAD
2399 #define MP3ENC_PREV BUTTON_UP
2400 #define MP3ENC_NEXT BUTTON_DOWN
2401 #define MP3ENC_DONE BUTTON_POWER
2402 #define MP3ENC_SELECT BUTTON_SELECT
2403
2404 #elif (CONFIG_KEYPAD == SANSA_E200_PAD) || \
2405 (CONFIG_KEYPAD == SANSA_C200_PAD) || \
2406 (CONFIG_KEYPAD == SANSA_CLIP_PAD) || \
2407 (CONFIG_KEYPAD == SANSA_M200_PAD)
2408 #define MP3ENC_PREV BUTTON_UP
2409 #define MP3ENC_NEXT BUTTON_DOWN
2410 #define MP3ENC_DONE BUTTON_POWER
2411 #define MP3ENC_SELECT BUTTON_SELECT
2412
2413 #elif (CONFIG_KEYPAD == SANSA_FUZE_PAD)
2414 #define MP3ENC_PREV BUTTON_SCROLL_BACK
2415 #define MP3ENC_NEXT BUTTON_SCROLL_FWD
2416 #define MP3ENC_DONE BUTTON_UP
2417 #define MP3ENC_SELECT BUTTON_SELECT
2418
2419 #elif CONFIG_KEYPAD == IRIVER_H10_PAD
2420 #define MP3ENC_PREV BUTTON_SCROLL_UP
2421 #define MP3ENC_NEXT BUTTON_SCROLL_DOWN
2422 #define MP3ENC_DONE BUTTON_POWER
2423 #define MP3ENC_SELECT BUTTON_PLAY
2424
2425 #elif CONFIG_KEYPAD == GIGABEAT_S_PAD
2426 #define MP3ENC_PREV BUTTON_UP
2427 #define MP3ENC_NEXT BUTTON_DOWN
2428 #define MP3ENC_DONE BUTTON_BACK
2429 #define MP3ENC_SELECT BUTTON_SELECT
2430
2431 #elif CONFIG_KEYPAD == MROBE100_PAD
2432 #define MP3ENC_PREV BUTTON_UP
2433 #define MP3ENC_NEXT BUTTON_DOWN
2434 #define MP3ENC_DONE BUTTON_POWER
2435 #define MP3ENC_SELECT BUTTON_SELECT
2436
2437 #elif CONFIG_KEYPAD == IAUDIO_M3_PAD
2438 #define MP3ENC_PREV BUTTON_RC_VOL_UP
2439 #define MP3ENC_NEXT BUTTON_RC_VOL_DOWN
2440 #define MP3ENC_DONE BUTTON_RC_REC
2441 #define MP3ENC_SELECT BUTTON_RC_FF
2442
2443 #elif CONFIG_KEYPAD == COWON_D2_PAD
2444 #define MP3ENC_DONE BUTTON_POWER
2445
2446 #elif CONFIG_KEYPAD == IAUDIO67_PAD
2447 #define MP3ENC_PREV BUTTON_LEFT
2448 #define MP3ENC_NEXT BUTTON_RIGHT
2449 #define MP3ENC_DONE BUTTON_POWER
2450 #define MP3ENC_SELECT BUTTON_PLAY
2451
2452 #elif CONFIG_KEYPAD == CREATIVEZVM_PAD
2453 #define MP3ENC_PREV BUTTON_UP
2454 #define MP3ENC_NEXT BUTTON_DOWN
2455 #define MP3ENC_DONE BUTTON_BACK
2456 #define MP3ENC_SELECT BUTTON_SELECT
2457
2458 #elif CONFIG_KEYPAD == PHILIPS_HDD1630_PAD
2459 #define MP3ENC_PREV BUTTON_UP
2460 #define MP3ENC_NEXT BUTTON_DOWN
2461 #define MP3ENC_DONE BUTTON_POWER
2462 #define MP3ENC_SELECT BUTTON_SELECT
2463
2464 #elif CONFIG_KEYPAD == PHILIPS_HDD6330_PAD
2465 #define MP3ENC_PREV BUTTON_UP
2466 #define MP3ENC_NEXT BUTTON_DOWN
2467 #define MP3ENC_DONE BUTTON_POWER
2468 #define MP3ENC_SELECT BUTTON_PLAY
2469
2470 #elif CONFIG_KEYPAD == PHILIPS_SA9200_PAD
2471 #define MP3ENC_PREV BUTTON_UP
2472 #define MP3ENC_NEXT BUTTON_DOWN
2473 #define MP3ENC_DONE BUTTON_POWER
2474 #define MP3ENC_SELECT BUTTON_PLAY
2475
2476 #elif CONFIG_KEYPAD == ONDAVX747_PAD || \
2477 CONFIG_KEYPAD == ONDAVX777_PAD || \
2478 CONFIG_KEYPAD == MROBE500_PAD
2479 #define MP3ENC_DONE BUTTON_POWER
2480
2481 #elif CONFIG_KEYPAD == SAMSUNG_YH_PAD
2482 #define MP3ENC_PREV BUTTON_UP
2483 #define MP3ENC_NEXT BUTTON_DOWN
2484 #define MP3ENC_DONE BUTTON_PLAY
2485 #define MP3ENC_SELECT BUTTON_RIGHT
2486
2487 #elif CONFIG_KEYPAD == PBELL_VIBE500_PAD
2488 #define MP3ENC_PREV BUTTON_UP
2489 #define MP3ENC_NEXT BUTTON_DOWN
2490 #define MP3ENC_DONE BUTTON_REC
2491 #define MP3ENC_SELECT BUTTON_OK
2492
2493 #elif CONFIG_KEYPAD == MPIO_HD200_PAD
2494 #define MP3ENC_PREV BUTTON_REW
2495 #define MP3ENC_NEXT BUTTON_FF
2496 #define MP3ENC_DONE BUTTON_PLAY
2497 #define MP3ENC_SELECT BUTTON_FUNC
2498
2499 #elif CONFIG_KEYPAD == MPIO_HD300_PAD
2500 #define MP3ENC_PREV BUTTON_REW
2501 #define MP3ENC_NEXT BUTTON_FF
2502 #define MP3ENC_DONE BUTTON_PLAY
2503 #define MP3ENC_SELECT BUTTON_ENTER
2504
2505 #elif CONFIG_KEYPAD == SANSA_FUZEPLUS_PAD
2506 #define MP3ENC_PREV BUTTON_LEFT
2507 #define MP3ENC_NEXT BUTTON_RIGHT
2508 #define MP3ENC_DONE BUTTON_PLAYPAUSE
2509 #define MP3ENC_SELECT BUTTON_SELECT
2510
2511 #elif CONFIG_KEYPAD == SANSA_CONNECT_PAD
2512 #define MP3ENC_PREV BUTTON_PREV
2513 #define MP3ENC_NEXT BUTTON_NEXT
2514 #define MP3ENC_DONE BUTTON_DOWN
2515 #define MP3ENC_SELECT BUTTON_SELECT
2516
2517 #elif (CONFIG_KEYPAD == HM60X_PAD) || \
2518 (CONFIG_KEYPAD == HM801_PAD)
2519 #define MP3ENC_PREV BUTTON_LEFT
2520 #define MP3ENC_NEXT BUTTON_RIGHT
2521 #define MP3ENC_DONE BUTTON_DOWN
2522 #define MP3ENC_SELECT BUTTON_SELECT
2523
2524 #else
2525 #error No keymap defined!
2526 #endif
2527
2528 #ifdef HAVE_TOUCHSCREEN
2529 #ifndef MP3ENC_PREV
2530 #define MP3ENC_PREV BUTTON_MIDLEFT
2531 #endif
2532 #ifndef MP3ENC_NEXT
2533 #define MP3ENC_NEXT BUTTON_MIDRIGHT
2534 #endif
2535 #ifndef MP3ENC_DONE
2536 #define MP3ENC_DONE BUTTON_TOPLEFT
2537 #endif
2538 #ifndef MP3ENC_SELECT
2539 #define MP3ENC_SELECT BUTTON_CENTER
2540 #endif
2541 #endif
2542
2543 enum plugin_status plugin_start(const void* parameter)
2544 {
2545 int rat, srat, nrat; /* for rate selection */
2546 int cont = 1, butt;
2547 int ret;
2548 long tim = 0;
2549 static const char* bstrg[] = {
2550 "64", "80", "96", "112", "128", "160", "192", "224", "256", "320"
2551 };
2552 static const int brate[] = {
2553 64, 80, 96, 112, 128, 160, 192, 224, 256, 320
2554 };
2555
2556 if (parameter == NULL)
2557 return PLUGIN_ERROR;
2558
2559 enc_buffer = rb->plugin_get_audio_buffer(&enc_buffer_size);
2560
2561 #ifdef CPU_COLDFIRE
2562 coldfire_set_macsr(0); /* integer mode */
2563 #endif
2564
2565 rb->lcd_setfont(FONT_SYSFIXED);
2566
2567 #ifdef HAVE_ADJUSTABLE_CPU_FREQ
2568 rb->cpu_boost(true);
2569 #endif
2570 rb->button_clear_queue();
2571
2572 nrat = 9;
2573 srat = 4; /* set 128kBit as default */
2574
2575 while(cont && (butt = rb->button_get_w_tmo(HZ/10)) != MP3ENC_SELECT)
2576 {
2577 switch(butt)
2578 {
2579 case MP3ENC_DONE: cont = 0; break;
2580 case MP3ENC_PREV|BUTTON_REPEAT:
2581 case MP3ENC_PREV: if(srat > 0 ) srat--; break;
2582 case MP3ENC_NEXT|BUTTON_REPEAT:
2583 case MP3ENC_NEXT: if(srat < nrat) srat++; break;
2584 }
2585
2586 rb->lcd_clear_display();
2587 rb->lcd_putsxy(2, 2, "-- Select Bitrate --");
2588
2589 for(rat=0; rat<=nrat; rat++)
2590 rb->lcd_putsxy(2, 12 + rat*8, bstrg[rat]);
2591 rb->lcd_set_drawmode(DRMODE_COMPLEMENT);
2592 rb->lcd_fillrect(0, 12 + srat*8, 127, 8);
2593 rb->lcd_set_drawmode(DRMODE_SOLID);
2594 rb->lcd_update();
2595 }
2596
2597 wav_filename = parameter;
2598
2599 if(cont)
2600 {
2601 ret = wave_open();
2602 if(ret == 0)
2603 {
2604 init_mp3_encoder_engine((cfg.channels==2), brate[srat], cfg.samplerate);
2605 get_mp3_filename(wav_filename);
2606 mp3file = rb->open(mp3_name , O_WRONLY|O_CREAT|O_TRUNC, 0666);
2607 frames = 0;
2608
2609 tim = *rb->current_tick;
2610 compress();
2611 tim = *rb->current_tick - tim;
2612
2613 rb->close(wavfile);
2614 rb->close(mp3file);
2615 rb->reload_directory();
2616 }
2617 else
2618 {
2619 rb->close(wavfile);
2620 rb->lcd_clear_display();
2621 rb->lcd_putsxyf(0, 20, "WaveOpen failed %d", ret);
2622 rb->lcd_putsxyf(0, 30, "%s", mp3_enc_err[-ret]);
2623 rb->lcd_update();
2624 rb->sleep(5*HZ);
2625 }
2626
2627 rb->lcd_clear_display();
2628 rb->lcd_putsxyf(0, 30, " Conversion: %ld.%02lds ", tim/100, tim%100);
2629 tim = frames * cfg.smpl_per_frm * 100 / cfg.samplerate; /* unit=.01s */
2630 rb->lcd_putsxyf(0, 20, " WAV-Length: %ld.%02lds ", tim/100, tim%100);
2631 rb->lcd_update();
2632 rb->sleep(5*HZ);
2633 }
2634
2635 rb->lcd_setfont(FONT_UI);
2636 #ifdef HAVE_ADJUSTABLE_CPU_FREQ
2637 rb->cpu_boost(false);
2638 #endif
2639 return PLUGIN_OK;
2640 }
thomasjfox's rockbox modifications (mameo port)