FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/on2avc.c
Date: 2026-09-26 05:01:43
Exec Total Coverage
Lines: 200 596 33.6%
Functions: 14 24 58.3%
Branches: 89 220 40.5%
Line Branch Exec Source
1 /*
2 * On2 Audio for Video Codec decoder
3 *
4 * Copyright (c) 2013 Konstantin Shishkov
5 *
6 * This file is part of FFmpeg.
7 *
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
12 *
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 */
22
23 #include "libavutil/channel_layout.h"
24 #include "libavutil/ffmath.h"
25 #include "libavutil/float_dsp.h"
26 #include "libavutil/mem.h"
27 #include "libavutil/mem_internal.h"
28 #include "libavutil/tx.h"
29
30 #include "avcodec.h"
31 #include "bytestream.h"
32 #include "codec_internal.h"
33 #include "decode.h"
34 #include "get_bits.h"
35
36 #include "on2avcdata.h"
37
38 #define ON2AVC_SUBFRAME_SIZE 1024
39
40 enum WindowTypes {
41 WINDOW_TYPE_LONG = 0,
42 WINDOW_TYPE_LONG_STOP,
43 WINDOW_TYPE_LONG_START,
44 WINDOW_TYPE_8SHORT = 3,
45 WINDOW_TYPE_EXT4,
46 WINDOW_TYPE_EXT5,
47 WINDOW_TYPE_EXT6,
48 WINDOW_TYPE_EXT7,
49 };
50
51 typedef struct On2AVCContext {
52 AVCodecContext *avctx;
53 AVFloatDSPContext *fdsp;
54 AVTXContext *mdct, *mdct_half, *mdct_small;
55 AVTXContext *fft64, *fft128, *fft256, *fft512;
56 av_tx_fn mdct_fn, mdct_half_fn, mdct_small_fn;
57 av_tx_fn fft64_fn, fft128_fn, fft256_fn, fft512_fn;
58 void (*wtf)(struct On2AVCContext *ctx, float *out, float *in, int size);
59
60 int is_av500;
61
62 const On2AVCMode *modes;
63 int window_type, prev_window_type;
64 int num_windows, num_bands;
65 int bits_per_section;
66 const int *band_start;
67
68 int grouping[8];
69 int ms_present;
70 int ms_info[ON2AVC_MAX_BANDS];
71
72 int is_long;
73
74 uint8_t band_type[ON2AVC_MAX_BANDS];
75 uint8_t band_run_end[ON2AVC_MAX_BANDS];
76 int num_sections;
77
78 float band_scales[ON2AVC_MAX_BANDS];
79
80 VLC scale_diff;
81 VLC cb_vlc[16];
82
83 float scale_tab[128];
84
85 DECLARE_ALIGNED(32, float, coeffs)[2][ON2AVC_SUBFRAME_SIZE];
86 DECLARE_ALIGNED(32, float, delay) [2][ON2AVC_SUBFRAME_SIZE];
87
88 DECLARE_ALIGNED(32, float, temp) [ON2AVC_SUBFRAME_SIZE * 2];
89 DECLARE_ALIGNED(32, float, mdct_buf) [ON2AVC_SUBFRAME_SIZE];
90 DECLARE_ALIGNED(32, float, long_win) [ON2AVC_SUBFRAME_SIZE];
91 DECLARE_ALIGNED(32, float, short_win)[ON2AVC_SUBFRAME_SIZE / 8];
92 } On2AVCContext;
93
94 33 static void on2avc_read_ms_info(On2AVCContext *c, GetBitContext *gb)
95 {
96 33 int w, b, band_off = 0;
97
98 33 c->ms_present = get_bits1(gb);
99
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 33 if (!c->ms_present)
100 33 return;
101 ✗ for (w = 0; w < c->num_windows; w++) {
102 ✗ if (!c->grouping[w]) {
103 ✗ memcpy(c->ms_info + band_off,
104 ✗ c->ms_info + band_off - c->num_bands,
105 ✗ c->num_bands * sizeof(*c->ms_info));
106 ✗ band_off += c->num_bands;
107 ✗ continue;
108 }
109 ✗ for (b = 0; b < c->num_bands; b++)
110 ✗ c->ms_info[band_off++] = get_bits1(gb);
111 }
112 }
113
114 // do not see Table 17 in ISO/IEC 13818-7
115 33 static int on2avc_decode_band_types(On2AVCContext *c, GetBitContext *gb)
116 {
117
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 33 int bits_per_sect = c->is_long ? 5 : 3;
118 33 int esc_val = (1 << bits_per_sect) - 1;
119 33 int num_bands = c->num_bands * c->num_windows;
120 33 int band = 0, i, band_type, run_len, run;
121
122
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 278 while (band < num_bands) {
123 245 band_type = get_bits(gb, 4);
124 245 run_len = 1;
125 do {
126 245 run = get_bits(gb, bits_per_sect);
127
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 245 if (run > num_bands - band - run_len) {
128 ✗ av_log(c->avctx, AV_LOG_ERROR, "Invalid band type run\n");
129 ✗ return AVERROR_INVALIDDATA;
130 }
131 245 run_len += run;
132
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 245 } while (run == esc_val);
133
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 1862 for (i = band; i < band + run_len; i++) {
134 1617 c->band_type[i] = band_type;
135 1617 c->band_run_end[i] = band + run_len;
136 }
137 245 band += run_len;
138 }
139
140 33 return 0;
141 }
142
143 // completely not like Table 18 in ISO/IEC 13818-7
144 // (no intensity stereo, different coding for the first coefficient)
145 33 static int on2avc_decode_band_scales(On2AVCContext *c, GetBitContext *gb)
146 {
147 33 int w, w2, b, scale, first = 1;
148 33 int band_off = 0;
149
150
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 66 for (w = 0; w < c->num_windows; w++) {
151
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 33 if (!c->grouping[w]) {
152 ✗ memcpy(c->band_scales + band_off,
153 ✗ c->band_scales + band_off - c->num_bands,
154 ✗ c->num_bands * sizeof(*c->band_scales));
155 ✗ band_off += c->num_bands;
156 ✗ continue;
157 }
158
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 1650 for (b = 0; b < c->num_bands; b++) {
159
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 1617 if (!c->band_type[band_off]) {
160 232 int all_zero = 1;
161
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 232 for (w2 = w + 1; w2 < c->num_windows; w2++) {
162 ✗ if (c->grouping[w2])
163 ✗ break;
164 ✗ if (c->band_type[w2 * c->num_bands + b]) {
165 ✗ all_zero = 0;
166 ✗ break;
167 }
168 }
169
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 232 if (all_zero) {
170 232 c->band_scales[band_off++] = 0;
171 232 continue;
172 }
173 }
174
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 1385 if (first) {
175 33 scale = get_bits(gb, 7);
176 33 first = 0;
177 } else {
178 1352 scale += get_vlc2(gb, c->scale_diff.table, 9, 3);
179 }
180
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 1385 if (scale < 0 || scale > 127) {
181 ✗ av_log(c->avctx, AV_LOG_ERROR, "Invalid scale value %d\n",
182 scale);
183 ✗ return AVERROR_INVALIDDATA;
184 }
185 1385 c->band_scales[band_off++] = c->scale_tab[scale];
186 }
187 }
188
189 33 return 0;
190 }
191
192 22692 static inline float on2avc_scale(int v, float scale)
193 {
194 22692 return v * sqrtf(abs(v)) * scale;
195 }
196
197 // spectral data is coded completely differently - there are no unsigned codebooks
198 1375 static int on2avc_decode_quads(On2AVCContext *c, GetBitContext *gb, float *dst,
199 int dst_size, int type, float band_scale)
200 {
201 int i, j, val, val1;
202
203
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 7038 for (i = 0; i < dst_size; i += 4) {
204 5663 val = get_vlc2(gb, c->cb_vlc[type].table, 9, 2);
205
206
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 28315 for (j = 0; j < 4; j++) {
207 22652 val1 = sign_extend((val >> (12 - j * 4)) & 0xF, 4);
208 22652 *dst++ = on2avc_scale(val1, band_scale);
209 }
210 }
211
212 1375 return 0;
213 }
214
215 2 static inline int get_egolomb(GetBitContext *gb)
216 {
217 2 int v = 4;
218
219
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 3 while (get_bits1(gb)) {
220 1 v++;
221
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 1 if (v > 30) {
222 ✗ av_log(NULL, AV_LOG_WARNING, "Too large golomb code in get_egolomb.\n");
223 ✗ v = 30;
224 ✗ break;
225 }
226 }
227
228 2 return (1 << v) + get_bits_long(gb, v);
229 }
230
231 10 static int on2avc_decode_pairs(On2AVCContext *c, GetBitContext *gb, float *dst,
232 int dst_size, int type, float band_scale)
233 {
234 int i, val, val1, val2, sign;
235
236
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 30 for (i = 0; i < dst_size; i += 2) {
237 20 val = get_vlc2(gb, c->cb_vlc[type].table, 9, 2);
238
239 20 val1 = sign_extend(val >> 8, 8);
240 20 val2 = sign_extend(val & 0xFF, 8);
241
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 20 if (type == ON2AVC_ESC_CB) {
242
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 6 if (val1 <= -16 || val1 >= 16) {
243 1 sign = 1 - (val1 < 0) * 2;
244 1 val1 = sign * get_egolomb(gb);
245 }
246
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 6 if (val2 <= -16 || val2 >= 16) {
247 1 sign = 1 - (val2 < 0) * 2;
248 1 val2 = sign * get_egolomb(gb);
249 }
250 }
251
252 20 *dst++ = on2avc_scale(val1, band_scale);
253 20 *dst++ = on2avc_scale(val2, band_scale);
254 }
255
256 10 return 0;
257 }
258
259 33 static int on2avc_read_channel_data(On2AVCContext *c, GetBitContext *gb, int ch)
260 {
261 int ret;
262 int w, b, band_idx;
263 float *coeff_ptr;
264
265
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 33 if ((ret = on2avc_decode_band_types(c, gb)) < 0)
266 ✗ return ret;
267
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 33 if ((ret = on2avc_decode_band_scales(c, gb)) < 0)
268 ✗ return ret;
269
270 33 coeff_ptr = c->coeffs[ch];
271 33 band_idx = 0;
272 33 memset(coeff_ptr, 0, ON2AVC_SUBFRAME_SIZE * sizeof(*coeff_ptr));
273
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 66 for (w = 0; w < c->num_windows; w++) {
274
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 1650 for (b = 0; b < c->num_bands; b++) {
275 1617 int band_size = c->band_start[b + 1] - c->band_start[b];
276 1617 int band_type = c->band_type[band_idx + b];
277
278
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 1617 if (!band_type) {
279 232 coeff_ptr += band_size;
280 232 continue;
281 }
282
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 1385 if (band_type < 9)
283 1375 on2avc_decode_quads(c, gb, coeff_ptr, band_size, band_type,
284 1375 c->band_scales[band_idx + b]);
285 else
286 10 on2avc_decode_pairs(c, gb, coeff_ptr, band_size, band_type,
287 10 c->band_scales[band_idx + b]);
288 1385 coeff_ptr += band_size;
289 }
290 33 band_idx += c->num_bands;
291 }
292
293 33 return 0;
294 }
295
296 ✗ static int on2avc_apply_ms(On2AVCContext *c)
297 {
298 int w, b, i;
299 ✗ int band_off = 0;
300 ✗ float *ch0 = c->coeffs[0];
301 ✗ float *ch1 = c->coeffs[1];
302
303 ✗ for (w = 0; w < c->num_windows; w++) {
304 ✗ for (b = 0; b < c->num_bands; b++) {
305 ✗ if (c->ms_info[band_off + b]) {
306 ✗ for (i = c->band_start[b]; i < c->band_start[b + 1]; i++) {
307 ✗ float l = *ch0, r = *ch1;
308 ✗ *ch0++ = l + r;
309 ✗ *ch1++ = l - r;
310 }
311 } else {
312 ✗ ch0 += c->band_start[b + 1] - c->band_start[b];
313 ✗ ch1 += c->band_start[b + 1] - c->band_start[b];
314 }
315 }
316 ✗ band_off += c->num_bands;
317 }
318 ✗ return 0;
319 }
320
321 ✗ static void zero_head_and_tail(float *src, int len, int order0, int order1)
322 {
323 ✗ memset(src, 0, sizeof(*src) * order0);
324 ✗ memset(src + len - order1, 0, sizeof(*src) * order1);
325 ✗ }
326
327 ✗ static void pretwiddle(float *src, float *dst, int dst_len, int tab_step,
328 int step, int order0, int order1, const double * const *tabs)
329 {
330 float *src2, *out;
331 const double *tab;
332 int i, j;
333
334 ✗ out = dst;
335 ✗ tab = tabs[0];
336 ✗ for (i = 0; i < tab_step; i++) {
337 ✗ double sum = 0;
338 ✗ for (j = 0; j < order0; j++)
339 ✗ sum += src[j] * tab[j * tab_step + i];
340 ✗ out[i] += sum;
341 }
342
343 ✗ out = dst + dst_len - tab_step;
344 ✗ tab = tabs[order0];
345 ✗ src2 = src + (dst_len - tab_step) / step + 1 + order0;
346 ✗ for (i = 0; i < tab_step; i++) {
347 ✗ double sum = 0;
348 ✗ for (j = 0; j < order1; j++)
349 ✗ sum += src2[j] * tab[j * tab_step + i];
350 ✗ out[i] += sum;
351 }
352 ✗ }
353
354 ✗ static void twiddle(float *src1, float *src2, int src2_len,
355 const double *tab, int tab_len, int step,
356 int order0, int order1, const double * const *tabs)
357 {
358 int steps;
359 int mask;
360 int i, j;
361
362 ✗ steps = (src2_len - tab_len) / step + 1;
363 ✗ pretwiddle(src1, src2, src2_len, tab_len, step, order0, order1, tabs);
364 ✗ mask = tab_len - 1;
365
366 ✗ for (i = 0; i < steps; i++) {
367 ✗ float in0 = src1[order0 + i];
368 ✗ int pos = (src2_len - 1) & mask;
369
370 ✗ if (pos < tab_len) {
371 ✗ const double *t = tab;
372 ✗ for (j = pos; j >= 0; j--)
373 ✗ src2[j] += in0 * *t++;
374 ✗ for (j = 0; j < tab_len - pos - 1; j++)
375 ✗ src2[src2_len - j - 1] += in0 * tab[pos + 1 + j];
376 } else {
377 ✗ for (j = 0; j < tab_len; j++)
378 ✗ src2[pos - j] += in0 * tab[j];
379 }
380 ✗ mask = pos + step;
381 }
382 ✗ }
383
384 #define CMUL1_R(s, t, is, it) \
385 s[is + 0] * t[it + 0] - s[is + 1] * t[it + 1]
386 #define CMUL1_I(s, t, is, it) \
387 s[is + 0] * t[it + 1] + s[is + 1] * t[it + 0]
388 #define CMUL2_R(s, t, is, it) \
389 s[is + 0] * t[it + 0] + s[is + 1] * t[it + 1]
390 #define CMUL2_I(s, t, is, it) \
391 s[is + 0] * t[it + 1] - s[is + 1] * t[it + 0]
392
393 #define CMUL0(dst, id, s0, s1, s2, s3, t0, t1, t2, t3, is, it) \
394 dst[id] = s0[is] * t0[it] + s1[is] * t1[it] \
395 + s2[is] * t2[it] + s3[is] * t3[it]; \
396 dst[id + 1] = s0[is] * t0[it + 1] + s1[is] * t1[it + 1] \
397 + s2[is] * t2[it + 1] + s3[is] * t3[it + 1];
398
399 #define CMUL1(dst, s0, s1, s2, s3, t0, t1, t2, t3, is, it) \
400 *dst++ = CMUL1_R(s0, t0, is, it) \
401 + CMUL1_R(s1, t1, is, it) \
402 + CMUL1_R(s2, t2, is, it) \
403 + CMUL1_R(s3, t3, is, it); \
404 *dst++ = CMUL1_I(s0, t0, is, it) \
405 + CMUL1_I(s1, t1, is, it) \
406 + CMUL1_I(s2, t2, is, it) \
407 + CMUL1_I(s3, t3, is, it);
408
409 #define CMUL2(dst, s0, s1, s2, s3, t0, t1, t2, t3, is, it) \
410 *dst++ = CMUL2_R(s0, t0, is, it) \
411 + CMUL2_R(s1, t1, is, it) \
412 + CMUL2_R(s2, t2, is, it) \
413 + CMUL2_R(s3, t3, is, it); \
414 *dst++ = CMUL2_I(s0, t0, is, it) \
415 + CMUL2_I(s1, t1, is, it) \
416 + CMUL2_I(s2, t2, is, it) \
417 + CMUL2_I(s3, t3, is, it);
418
419 ✗ static void combine_fft(float *s0, float *s1, float *s2, float *s3, float *dst,
420 const float *t0, const float *t1,
421 const float *t2, const float *t3, int len, int step)
422 {
423 const float *h0, *h1, *h2, *h3;
424 float *d1, *d2;
425 int tmp, half;
426 ✗ int len2 = len >> 1, len4 = len >> 2;
427 int hoff;
428 int i, j, k;
429
430 ✗ tmp = step;
431 ✗ for (half = len2; tmp > 1; half <<= 1, tmp >>= 1);
432
433 ✗ h0 = t0 + half;
434 ✗ h1 = t1 + half;
435 ✗ h2 = t2 + half;
436 ✗ h3 = t3 + half;
437
438 ✗ CMUL0(dst, 0, s0, s1, s2, s3, t0, t1, t2, t3, 0, 0);
439
440 ✗ hoff = 2 * step * (len4 >> 1);
441
442 ✗ j = 2;
443 ✗ k = 2 * step;
444 ✗ d1 = dst + 2;
445 ✗ d2 = dst + 2 + (len >> 1);
446 ✗ for (i = 0; i < (len4 - 1) >> 1; i++) {
447 ✗ CMUL1(d1, s0, s1, s2, s3, t0, t1, t2, t3, j, k);
448 ✗ CMUL1(d2, s0, s1, s2, s3, h0, h1, h2, h3, j, k);
449 ✗ j += 2;
450 ✗ k += 2 * step;
451 }
452 ✗ CMUL0(dst, len4, s0, s1, s2, s3, t0, t1, t2, t3, 1, hoff);
453 ✗ CMUL0(dst, len4 + len2, s0, s1, s2, s3, h0, h1, h2, h3, 1, hoff);
454
455 ✗ j = len4;
456 ✗ k = hoff + 2 * step * len4;
457 ✗ d1 = dst + len4 + 2;
458 ✗ d2 = dst + len4 + 2 + len2;
459 ✗ for (i = 0; i < (len4 - 2) >> 1; i++) {
460 ✗ CMUL2(d1, s0, s1, s2, s3, t0, t1, t2, t3, j, k);
461 ✗ CMUL2(d2, s0, s1, s2, s3, h0, h1, h2, h3, j, k);
462 ✗ j -= 2;
463 ✗ k += 2 * step;
464 }
465 ✗ CMUL0(dst, len2 + 4, s0, s1, s2, s3, t0, t1, t2, t3, 0, k);
466 ✗ }
467
468 ✗ static void wtf_end_512(On2AVCContext *c, float *out, float *src,
469 float *tmp0, float *tmp1)
470 {
471 ✗ memcpy(tmp1, tmp0, 384 * sizeof(*tmp0));
472 ✗ memcpy(tmp0 + 384, tmp1 + 384, 128 * sizeof(*tmp0));
473
474 ✗ zero_head_and_tail(tmp1, 128, 16, 4);
475 ✗ zero_head_and_tail(tmp1 + 128, 128, 16, 4);
476 ✗ zero_head_and_tail(tmp1 + 256, 128, 13, 7);
477 ✗ zero_head_and_tail(tmp1 + 384, 128, 15, 5);
478
479 ✗ c->fft64_fn(c->fft64, src + 0, tmp1 + 0, sizeof(float));
480 ✗ c->fft64_fn(c->fft64, src + 128, tmp1 + 128, sizeof(float));
481 ✗ c->fft64_fn(c->fft64, src + 256, tmp1 + 256, sizeof(float));
482 ✗ c->fft64_fn(c->fft64, src + 384, tmp1 + 384, sizeof(float));
483
484 ✗ combine_fft(src, src + 128, src + 256, src + 384, tmp1,
485 ff_on2avc_ctab_1, ff_on2avc_ctab_2,
486 ff_on2avc_ctab_3, ff_on2avc_ctab_4, 512, 2);
487
488 ✗ c->fft256_fn(c->fft256, src, tmp1, sizeof(float));
489
490 ✗ pretwiddle(&tmp0[ 0], src, 512, 84, 4, 16, 4, ff_on2avc_tabs_20_84_1);
491 ✗ pretwiddle(&tmp0[128], src, 512, 84, 4, 16, 4, ff_on2avc_tabs_20_84_2);
492 ✗ pretwiddle(&tmp0[256], src, 512, 84, 4, 13, 7, ff_on2avc_tabs_20_84_3);
493 ✗ pretwiddle(&tmp0[384], src, 512, 84, 4, 15, 5, ff_on2avc_tabs_20_84_4);
494 ✗ }
495
496 ✗ static void wtf_end_1024(On2AVCContext *c, float *out, float *src,
497 float *tmp0, float *tmp1)
498 {
499 ✗ memcpy(tmp1, tmp0, 768 * sizeof(*tmp0));
500 ✗ memcpy(tmp0 + 768, tmp1 + 768, 256 * sizeof(*tmp0));
501
502 ✗ zero_head_and_tail(tmp1, 256, 16, 4);
503 ✗ zero_head_and_tail(tmp1 + 256, 256, 16, 4);
504 ✗ zero_head_and_tail(tmp1 + 512, 256, 13, 7);
505 ✗ zero_head_and_tail(tmp1 + 768, 256, 15, 5);
506
507 ✗ c->fft128_fn(c->fft128, src + 0, tmp1 + 0, sizeof(float));
508 ✗ c->fft128_fn(c->fft128, src + 256, tmp1 + 256, sizeof(float));
509 ✗ c->fft128_fn(c->fft128, src + 512, tmp1 + 512, sizeof(float));
510 ✗ c->fft128_fn(c->fft128, src + 768, tmp1 + 768, sizeof(float));
511
512 ✗ combine_fft(src, src + 256, src + 512, src + 768, tmp1,
513 ff_on2avc_ctab_1, ff_on2avc_ctab_2,
514 ff_on2avc_ctab_3, ff_on2avc_ctab_4, 1024, 1);
515
516 ✗ c->fft512_fn(c->fft512, src, tmp1, sizeof(float));
517
518 ✗ pretwiddle(&tmp0[ 0], src, 1024, 84, 4, 16, 4, ff_on2avc_tabs_20_84_1);
519 ✗ pretwiddle(&tmp0[256], src, 1024, 84, 4, 16, 4, ff_on2avc_tabs_20_84_2);
520 ✗ pretwiddle(&tmp0[512], src, 1024, 84, 4, 13, 7, ff_on2avc_tabs_20_84_3);
521 ✗ pretwiddle(&tmp0[768], src, 1024, 84, 4, 15, 5, ff_on2avc_tabs_20_84_4);
522 ✗ }
523
524 ✗ static void wtf_40(On2AVCContext *c, float *out, float *src, int size)
525 {
526 ✗ float *tmp0 = c->temp, *tmp1 = c->temp + 1024;
527
528 ✗ memset(tmp0, 0, sizeof(*tmp0) * 1024);
529 ✗ memset(tmp1, 0, sizeof(*tmp1) * 1024);
530
531 ✗ if (size == 512) {
532 ✗ twiddle(src, &tmp0[ 0], 16, ff_on2avc_tab_10_1, 10, 2, 1, 3, ff_on2avc_tabs_4_10_1);
533 ✗ twiddle(src + 8, &tmp0[ 0], 16, ff_on2avc_tab_10_2, 10, 2, 3, 1, ff_on2avc_tabs_4_10_2);
534 ✗ twiddle(src + 16, &tmp0[ 16], 16, ff_on2avc_tab_10_2, 10, 2, 3, 1, ff_on2avc_tabs_4_10_2);
535 ✗ twiddle(src + 24, &tmp0[ 16], 16, ff_on2avc_tab_10_1, 10, 2, 1, 3, ff_on2avc_tabs_4_10_1);
536 ✗ twiddle(src + 32, &tmp0[ 32], 16, ff_on2avc_tab_10_1, 10, 2, 1, 3, ff_on2avc_tabs_4_10_1);
537 ✗ twiddle(src + 40, &tmp0[ 32], 16, ff_on2avc_tab_10_2, 10, 2, 3, 1, ff_on2avc_tabs_4_10_2);
538 ✗ twiddle(src + 48, &tmp0[ 48], 16, ff_on2avc_tab_10_2, 10, 2, 3, 1, ff_on2avc_tabs_4_10_2);
539 ✗ twiddle(src + 56, &tmp0[ 48], 16, ff_on2avc_tab_10_1, 10, 2, 1, 3, ff_on2avc_tabs_4_10_1);
540 ✗ twiddle(&tmp0[ 0], &tmp1[ 0], 32, ff_on2avc_tab_20_1, 20, 2, 5, 4, ff_on2avc_tabs_9_20_1);
541 ✗ twiddle(&tmp0[16], &tmp1[ 0], 32, ff_on2avc_tab_20_2, 20, 2, 4, 5, ff_on2avc_tabs_9_20_2);
542 ✗ twiddle(&tmp0[32], &tmp1[ 32], 32, ff_on2avc_tab_20_2, 20, 2, 4, 5, ff_on2avc_tabs_9_20_2);
543 ✗ twiddle(&tmp0[48], &tmp1[ 32], 32, ff_on2avc_tab_20_1, 20, 2, 5, 4, ff_on2avc_tabs_9_20_1);
544 ✗ twiddle(src + 64, &tmp1[ 64], 32, ff_on2avc_tab_20_1, 20, 2, 5, 4, ff_on2avc_tabs_9_20_1);
545 ✗ twiddle(src + 80, &tmp1[ 64], 32, ff_on2avc_tab_20_2, 20, 2, 4, 5, ff_on2avc_tabs_9_20_2);
546 ✗ twiddle(src + 96, &tmp1[ 96], 32, ff_on2avc_tab_20_2, 20, 2, 4, 5, ff_on2avc_tabs_9_20_2);
547 ✗ twiddle(src + 112, &tmp1[ 96], 32, ff_on2avc_tab_20_1, 20, 2, 5, 4, ff_on2avc_tabs_9_20_1);
548 ✗ twiddle(src + 128, &tmp1[128], 32, ff_on2avc_tab_20_1, 20, 2, 5, 4, ff_on2avc_tabs_9_20_1);
549 ✗ twiddle(src + 144, &tmp1[128], 32, ff_on2avc_tab_20_2, 20, 2, 4, 5, ff_on2avc_tabs_9_20_2);
550 ✗ twiddle(src + 160, &tmp1[160], 32, ff_on2avc_tab_20_2, 20, 2, 4, 5, ff_on2avc_tabs_9_20_2);
551 ✗ twiddle(src + 176, &tmp1[160], 32, ff_on2avc_tab_20_1, 20, 2, 5, 4, ff_on2avc_tabs_9_20_1);
552
553 ✗ memset(tmp0, 0, 64 * sizeof(*tmp0));
554
555 ✗ twiddle(&tmp1[ 0], &tmp0[ 0], 128, ff_on2avc_tab_84_1, 84, 4, 16, 4, ff_on2avc_tabs_20_84_1);
556 ✗ twiddle(&tmp1[ 32], &tmp0[ 0], 128, ff_on2avc_tab_84_2, 84, 4, 16, 4, ff_on2avc_tabs_20_84_2);
557 ✗ twiddle(&tmp1[ 64], &tmp0[ 0], 128, ff_on2avc_tab_84_3, 84, 4, 13, 7, ff_on2avc_tabs_20_84_3);
558 ✗ twiddle(&tmp1[ 96], &tmp0[ 0], 128, ff_on2avc_tab_84_4, 84, 4, 15, 5, ff_on2avc_tabs_20_84_4);
559 ✗ twiddle(&tmp1[128], &tmp0[128], 128, ff_on2avc_tab_84_4, 84, 4, 15, 5, ff_on2avc_tabs_20_84_4);
560 ✗ twiddle(&tmp1[160], &tmp0[128], 128, ff_on2avc_tab_84_3, 84, 4, 13, 7, ff_on2avc_tabs_20_84_3);
561 ✗ twiddle(src + 192, &tmp0[128], 128, ff_on2avc_tab_84_2, 84, 4, 16, 4, ff_on2avc_tabs_20_84_2);
562 ✗ twiddle(src + 224, &tmp0[128], 128, ff_on2avc_tab_84_1, 84, 4, 16, 4, ff_on2avc_tabs_20_84_1);
563 ✗ twiddle(src + 256, &tmp0[256], 128, ff_on2avc_tab_84_1, 84, 4, 16, 4, ff_on2avc_tabs_20_84_1);
564 ✗ twiddle(src + 288, &tmp0[256], 128, ff_on2avc_tab_84_2, 84, 4, 16, 4, ff_on2avc_tabs_20_84_2);
565 ✗ twiddle(src + 320, &tmp0[256], 128, ff_on2avc_tab_84_3, 84, 4, 13, 7, ff_on2avc_tabs_20_84_3);
566 ✗ twiddle(src + 352, &tmp0[256], 128, ff_on2avc_tab_84_4, 84, 4, 15, 5, ff_on2avc_tabs_20_84_4);
567
568 ✗ wtf_end_512(c, out, src, tmp0, tmp1);
569 } else {
570 ✗ twiddle(src, &tmp0[ 0], 32, ff_on2avc_tab_20_1, 20, 2, 5, 4, ff_on2avc_tabs_9_20_1);
571 ✗ twiddle(src + 16, &tmp0[ 0], 32, ff_on2avc_tab_20_2, 20, 2, 4, 5, ff_on2avc_tabs_9_20_2);
572 ✗ twiddle(src + 32, &tmp0[ 32], 32, ff_on2avc_tab_20_2, 20, 2, 4, 5, ff_on2avc_tabs_9_20_2);
573 ✗ twiddle(src + 48, &tmp0[ 32], 32, ff_on2avc_tab_20_1, 20, 2, 5, 4, ff_on2avc_tabs_9_20_1);
574 ✗ twiddle(src + 64, &tmp0[ 64], 32, ff_on2avc_tab_20_1, 20, 2, 5, 4, ff_on2avc_tabs_9_20_1);
575 ✗ twiddle(src + 80, &tmp0[ 64], 32, ff_on2avc_tab_20_2, 20, 2, 4, 5, ff_on2avc_tabs_9_20_2);
576 ✗ twiddle(src + 96, &tmp0[ 96], 32, ff_on2avc_tab_20_2, 20, 2, 4, 5, ff_on2avc_tabs_9_20_2);
577 ✗ twiddle(src + 112, &tmp0[ 96], 32, ff_on2avc_tab_20_1, 20, 2, 5, 4, ff_on2avc_tabs_9_20_1);
578 ✗ twiddle(&tmp0[ 0], &tmp1[ 0], 64, ff_on2avc_tab_40_1, 40, 2, 11, 8, ff_on2avc_tabs_19_40_1);
579 ✗ twiddle(&tmp0[32], &tmp1[ 0], 64, ff_on2avc_tab_40_2, 40, 2, 8, 11, ff_on2avc_tabs_19_40_2);
580 ✗ twiddle(&tmp0[64], &tmp1[ 64], 64, ff_on2avc_tab_40_2, 40, 2, 8, 11, ff_on2avc_tabs_19_40_2);
581 ✗ twiddle(&tmp0[96], &tmp1[ 64], 64, ff_on2avc_tab_40_1, 40, 2, 11, 8, ff_on2avc_tabs_19_40_1);
582 ✗ twiddle(src + 128, &tmp1[128], 64, ff_on2avc_tab_40_1, 40, 2, 11, 8, ff_on2avc_tabs_19_40_1);
583 ✗ twiddle(src + 160, &tmp1[128], 64, ff_on2avc_tab_40_2, 40, 2, 8, 11, ff_on2avc_tabs_19_40_2);
584 ✗ twiddle(src + 192, &tmp1[192], 64, ff_on2avc_tab_40_2, 40, 2, 8, 11, ff_on2avc_tabs_19_40_2);
585 ✗ twiddle(src + 224, &tmp1[192], 64, ff_on2avc_tab_40_1, 40, 2, 11, 8, ff_on2avc_tabs_19_40_1);
586 ✗ twiddle(src + 256, &tmp1[256], 64, ff_on2avc_tab_40_1, 40, 2, 11, 8, ff_on2avc_tabs_19_40_1);
587 ✗ twiddle(src + 288, &tmp1[256], 64, ff_on2avc_tab_40_2, 40, 2, 8, 11, ff_on2avc_tabs_19_40_2);
588 ✗ twiddle(src + 320, &tmp1[320], 64, ff_on2avc_tab_40_2, 40, 2, 8, 11, ff_on2avc_tabs_19_40_2);
589 ✗ twiddle(src + 352, &tmp1[320], 64, ff_on2avc_tab_40_1, 40, 2, 11, 8, ff_on2avc_tabs_19_40_1);
590
591 ✗ memset(tmp0, 0, 128 * sizeof(*tmp0));
592
593 ✗ twiddle(&tmp1[ 0], &tmp0[ 0], 256, ff_on2avc_tab_84_1, 84, 4, 16, 4, ff_on2avc_tabs_20_84_1);
594 ✗ twiddle(&tmp1[ 64], &tmp0[ 0], 256, ff_on2avc_tab_84_2, 84, 4, 16, 4, ff_on2avc_tabs_20_84_2);
595 ✗ twiddle(&tmp1[128], &tmp0[ 0], 256, ff_on2avc_tab_84_3, 84, 4, 13, 7, ff_on2avc_tabs_20_84_3);
596 ✗ twiddle(&tmp1[192], &tmp0[ 0], 256, ff_on2avc_tab_84_4, 84, 4, 15, 5, ff_on2avc_tabs_20_84_4);
597 ✗ twiddle(&tmp1[256], &tmp0[256], 256, ff_on2avc_tab_84_4, 84, 4, 15, 5, ff_on2avc_tabs_20_84_4);
598 ✗ twiddle(&tmp1[320], &tmp0[256], 256, ff_on2avc_tab_84_3, 84, 4, 13, 7, ff_on2avc_tabs_20_84_3);
599 ✗ twiddle(src + 384, &tmp0[256], 256, ff_on2avc_tab_84_2, 84, 4, 16, 4, ff_on2avc_tabs_20_84_2);
600 ✗ twiddle(src + 448, &tmp0[256], 256, ff_on2avc_tab_84_1, 84, 4, 16, 4, ff_on2avc_tabs_20_84_1);
601 ✗ twiddle(src + 512, &tmp0[512], 256, ff_on2avc_tab_84_1, 84, 4, 16, 4, ff_on2avc_tabs_20_84_1);
602 ✗ twiddle(src + 576, &tmp0[512], 256, ff_on2avc_tab_84_2, 84, 4, 16, 4, ff_on2avc_tabs_20_84_2);
603 ✗ twiddle(src + 640, &tmp0[512], 256, ff_on2avc_tab_84_3, 84, 4, 13, 7, ff_on2avc_tabs_20_84_3);
604 ✗ twiddle(src + 704, &tmp0[512], 256, ff_on2avc_tab_84_4, 84, 4, 15, 5, ff_on2avc_tabs_20_84_4);
605
606 ✗ wtf_end_1024(c, out, src, tmp0, tmp1);
607 }
608 ✗ }
609
610 ✗ static void wtf_44(On2AVCContext *c, float *out, float *src, int size)
611 {
612 ✗ float *tmp0 = c->temp, *tmp1 = c->temp + 1024;
613
614 ✗ memset(tmp0, 0, sizeof(*tmp0) * 1024);
615 ✗ memset(tmp1, 0, sizeof(*tmp1) * 1024);
616
617 ✗ if (size == 512) {
618 ✗ twiddle(src, &tmp0[ 0], 16, ff_on2avc_tab_10_1, 10, 2, 1, 3, ff_on2avc_tabs_4_10_1);
619 ✗ twiddle(src + 8, &tmp0[ 0], 16, ff_on2avc_tab_10_2, 10, 2, 3, 1, ff_on2avc_tabs_4_10_2);
620 ✗ twiddle(src + 16, &tmp0[16], 16, ff_on2avc_tab_10_2, 10, 2, 3, 1, ff_on2avc_tabs_4_10_2);
621 ✗ twiddle(src + 24, &tmp0[16], 16, ff_on2avc_tab_10_1, 10, 2, 1, 3, ff_on2avc_tabs_4_10_1);
622 ✗ twiddle(src + 32, &tmp0[32], 16, ff_on2avc_tab_10_1, 10, 2, 1, 3, ff_on2avc_tabs_4_10_1);
623 ✗ twiddle(src + 40, &tmp0[32], 16, ff_on2avc_tab_10_2, 10, 2, 3, 1, ff_on2avc_tabs_4_10_2);
624 ✗ twiddle(src + 48, &tmp0[48], 16, ff_on2avc_tab_10_2, 10, 2, 3, 1, ff_on2avc_tabs_4_10_2);
625 ✗ twiddle(src + 56, &tmp0[48], 16, ff_on2avc_tab_10_1, 10, 2, 1, 3, ff_on2avc_tabs_4_10_1);
626 ✗ twiddle(&tmp0[ 0], &tmp1[ 0], 32, ff_on2avc_tab_20_1, 20, 2, 5, 4, ff_on2avc_tabs_9_20_1);
627 ✗ twiddle(&tmp0[16], &tmp1[ 0], 32, ff_on2avc_tab_20_2, 20, 2, 4, 5, ff_on2avc_tabs_9_20_2);
628 ✗ twiddle(&tmp0[32], &tmp1[32], 32, ff_on2avc_tab_20_2, 20, 2, 4, 5, ff_on2avc_tabs_9_20_2);
629 ✗ twiddle(&tmp0[48], &tmp1[32], 32, ff_on2avc_tab_20_1, 20, 2, 5, 4, ff_on2avc_tabs_9_20_1);
630 ✗ twiddle(src + 64, &tmp1[64], 32, ff_on2avc_tab_20_1, 20, 2, 5, 4, ff_on2avc_tabs_9_20_1);
631 ✗ twiddle(src + 80, &tmp1[64], 32, ff_on2avc_tab_20_2, 20, 2, 4, 5, ff_on2avc_tabs_9_20_2);
632 ✗ twiddle(src + 96, &tmp1[96], 32, ff_on2avc_tab_20_2, 20, 2, 4, 5, ff_on2avc_tabs_9_20_2);
633 ✗ twiddle(src + 112, &tmp1[96], 32, ff_on2avc_tab_20_1, 20, 2, 5, 4, ff_on2avc_tabs_9_20_1);
634
635 ✗ memset(tmp0, 0, 64 * sizeof(*tmp0));
636
637 ✗ twiddle(&tmp1[ 0], &tmp0[ 0], 128, ff_on2avc_tab_84_1, 84, 4, 16, 4, ff_on2avc_tabs_20_84_1);
638 ✗ twiddle(&tmp1[32], &tmp0[ 0], 128, ff_on2avc_tab_84_2, 84, 4, 16, 4, ff_on2avc_tabs_20_84_2);
639 ✗ twiddle(&tmp1[64], &tmp0[ 0], 128, ff_on2avc_tab_84_3, 84, 4, 13, 7, ff_on2avc_tabs_20_84_3);
640 ✗ twiddle(&tmp1[96], &tmp0[ 0], 128, ff_on2avc_tab_84_4, 84, 4, 15, 5, ff_on2avc_tabs_20_84_4);
641 ✗ twiddle(src + 128, &tmp0[128], 128, ff_on2avc_tab_84_4, 84, 4, 15, 5, ff_on2avc_tabs_20_84_4);
642 ✗ twiddle(src + 160, &tmp0[128], 128, ff_on2avc_tab_84_3, 84, 4, 13, 7, ff_on2avc_tabs_20_84_3);
643 ✗ twiddle(src + 192, &tmp0[128], 128, ff_on2avc_tab_84_2, 84, 4, 16, 4, ff_on2avc_tabs_20_84_2);
644 ✗ twiddle(src + 224, &tmp0[128], 128, ff_on2avc_tab_84_1, 84, 4, 16, 4, ff_on2avc_tabs_20_84_1);
645 ✗ twiddle(src + 256, &tmp0[256], 128, ff_on2avc_tab_40_1, 40, 2, 11, 8, ff_on2avc_tabs_19_40_1);
646 ✗ twiddle(src + 320, &tmp0[256], 128, ff_on2avc_tab_40_2, 40, 2, 8, 11, ff_on2avc_tabs_19_40_2);
647
648 ✗ wtf_end_512(c, out, src, tmp0, tmp1);
649 } else {
650 ✗ twiddle(src, &tmp0[ 0], 32, ff_on2avc_tab_20_1, 20, 2, 5, 4, ff_on2avc_tabs_9_20_1);
651 ✗ twiddle(src + 16, &tmp0[ 0], 32, ff_on2avc_tab_20_2, 20, 2, 4, 5, ff_on2avc_tabs_9_20_2);
652 ✗ twiddle(src + 32, &tmp0[ 32], 32, ff_on2avc_tab_20_2, 20, 2, 4, 5, ff_on2avc_tabs_9_20_2);
653 ✗ twiddle(src + 48, &tmp0[ 32], 32, ff_on2avc_tab_20_1, 20, 2, 5, 4, ff_on2avc_tabs_9_20_1);
654 ✗ twiddle(src + 64, &tmp0[ 64], 32, ff_on2avc_tab_20_1, 20, 2, 5, 4, ff_on2avc_tabs_9_20_1);
655 ✗ twiddle(src + 80, &tmp0[ 64], 32, ff_on2avc_tab_20_2, 20, 2, 4, 5, ff_on2avc_tabs_9_20_2);
656 ✗ twiddle(src + 96, &tmp0[ 96], 32, ff_on2avc_tab_20_2, 20, 2, 4, 5, ff_on2avc_tabs_9_20_2);
657 ✗ twiddle(src + 112, &tmp0[ 96], 32, ff_on2avc_tab_20_1, 20, 2, 5, 4, ff_on2avc_tabs_9_20_1);
658 ✗ twiddle(&tmp0[ 0], &tmp1[ 0], 64, ff_on2avc_tab_40_1, 40, 2, 11, 8, ff_on2avc_tabs_19_40_1);
659 ✗ twiddle(&tmp0[32], &tmp1[ 0], 64, ff_on2avc_tab_40_2, 40, 2, 8, 11, ff_on2avc_tabs_19_40_2);
660 ✗ twiddle(&tmp0[64], &tmp1[ 64], 64, ff_on2avc_tab_40_2, 40, 2, 8, 11, ff_on2avc_tabs_19_40_2);
661 ✗ twiddle(&tmp0[96], &tmp1[ 64], 64, ff_on2avc_tab_40_1, 40, 2, 11, 8, ff_on2avc_tabs_19_40_1);
662 ✗ twiddle(src + 128, &tmp1[128], 64, ff_on2avc_tab_40_1, 40, 2, 11, 8, ff_on2avc_tabs_19_40_1);
663 ✗ twiddle(src + 160, &tmp1[128], 64, ff_on2avc_tab_40_2, 40, 2, 8, 11, ff_on2avc_tabs_19_40_2);
664 ✗ twiddle(src + 192, &tmp1[192], 64, ff_on2avc_tab_40_2, 40, 2, 8, 11, ff_on2avc_tabs_19_40_2);
665 ✗ twiddle(src + 224, &tmp1[192], 64, ff_on2avc_tab_40_1, 40, 2, 11, 8, ff_on2avc_tabs_19_40_1);
666
667 ✗ memset(tmp0, 0, 128 * sizeof(*tmp0));
668
669 ✗ twiddle(&tmp1[ 0], &tmp0[ 0], 256, ff_on2avc_tab_84_1, 84, 4, 16, 4, ff_on2avc_tabs_20_84_1);
670 ✗ twiddle(&tmp1[ 64], &tmp0[ 0], 256, ff_on2avc_tab_84_2, 84, 4, 16, 4, ff_on2avc_tabs_20_84_2);
671 ✗ twiddle(&tmp1[128], &tmp0[ 0], 256, ff_on2avc_tab_84_3, 84, 4, 13, 7, ff_on2avc_tabs_20_84_3);
672 ✗ twiddle(&tmp1[192], &tmp0[ 0], 256, ff_on2avc_tab_84_4, 84, 4, 15, 5, ff_on2avc_tabs_20_84_4);
673 ✗ twiddle(src + 256, &tmp0[256], 256, ff_on2avc_tab_84_4, 84, 4, 15, 5, ff_on2avc_tabs_20_84_4);
674 ✗ twiddle(src + 320, &tmp0[256], 256, ff_on2avc_tab_84_3, 84, 4, 13, 7, ff_on2avc_tabs_20_84_3);
675 ✗ twiddle(src + 384, &tmp0[256], 256, ff_on2avc_tab_84_2, 84, 4, 16, 4, ff_on2avc_tabs_20_84_2);
676 ✗ twiddle(src + 448, &tmp0[256], 256, ff_on2avc_tab_84_1, 84, 4, 16, 4, ff_on2avc_tabs_20_84_1);
677 ✗ twiddle(src + 512, &tmp0[512], 256, ff_on2avc_tab_40_1, 40, 2, 11, 8, ff_on2avc_tabs_19_40_1);
678 ✗ twiddle(src + 640, &tmp0[512], 256, ff_on2avc_tab_40_2, 40, 2, 8, 11, ff_on2avc_tabs_19_40_2);
679
680 ✗ wtf_end_1024(c, out, src, tmp0, tmp1);
681 }
682 ✗ }
683
684 ✗ static int on2avc_reconstruct_channel_ext(On2AVCContext *c, AVFrame *dst, int offset)
685 {
686 int ch, i;
687
688 ✗ for (ch = 0; ch < c->avctx->ch_layout.nb_channels; ch++) {
689 ✗ float *out = (float*)dst->extended_data[ch] + offset;
690 ✗ float *in = c->coeffs[ch];
691 ✗ float *saved = c->delay[ch];
692 ✗ float *buf = c->mdct_buf;
693 ✗ float *wout = out + 448;
694
695 ✗ switch (c->window_type) {
696 ✗ case WINDOW_TYPE_EXT7:
697 ✗ c->mdct_fn(c->mdct, buf, in, sizeof(float));
698 ✗ break;
699 ✗ case WINDOW_TYPE_EXT4:
700 ✗ c->wtf(c, buf, in, 1024);
701 ✗ break;
702 ✗ case WINDOW_TYPE_EXT5:
703 ✗ c->wtf(c, buf, in, 512);
704 ✗ c->mdct_half_fn(c->mdct_half, buf + 512, in + 512, sizeof(float));
705 ✗ for (i = 0; i < 256; i++) {
706 ✗ FFSWAP(float, buf[i + 512], buf[1023 - i]);
707 }
708 ✗ break;
709 ✗ case WINDOW_TYPE_EXT6:
710 ✗ c->mdct_half_fn(c->mdct_half, buf, in, sizeof(float));
711 ✗ for (i = 0; i < 256; i++) {
712 ✗ FFSWAP(float, buf[i], buf[511 - i]);
713 }
714 ✗ c->wtf(c, buf + 512, in + 512, 512);
715 ✗ break;
716 }
717
718 ✗ memcpy(out, saved, 448 * sizeof(float));
719 ✗ c->fdsp->vector_fmul_window(wout, saved + 448, buf, c->short_win, 64);
720 ✗ memcpy(wout + 128, buf + 64, 448 * sizeof(float));
721 ✗ memcpy(saved, buf + 512, 448 * sizeof(float));
722 ✗ memcpy(saved + 448, buf + 7*128 + 64, 64 * sizeof(float));
723 }
724
725 ✗ return 0;
726 }
727
728 // not borrowed from aacdec.c - the codec has original design after all
729 33 static int on2avc_reconstruct_channel(On2AVCContext *c, int channel,
730 AVFrame *dst, int offset)
731 {
732 int i;
733 33 float *out = (float*)dst->extended_data[channel] + offset;
734 33 float *in = c->coeffs[channel];
735 33 float *saved = c->delay[channel];
736 33 float *buf = c->mdct_buf;
737 33 float *temp = c->temp;
738
739
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 33 switch (c->window_type) {
740 33 case WINDOW_TYPE_LONG_START:
741 case WINDOW_TYPE_LONG_STOP:
742 case WINDOW_TYPE_LONG:
743 33 c->mdct_fn(c->mdct, buf, in, sizeof(float));
744 33 break;
745 ✗ case WINDOW_TYPE_8SHORT:
746 ✗ for (i = 0; i < ON2AVC_SUBFRAME_SIZE; i += ON2AVC_SUBFRAME_SIZE / 8)
747 ✗ c->mdct_small_fn(c->mdct_small, buf + i, in + i, sizeof(float));
748 ✗ break;
749 }
750
751
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 33 if ((c->prev_window_type == WINDOW_TYPE_LONG ||
752 ✗ c->prev_window_type == WINDOW_TYPE_LONG_STOP) &&
753
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 33 (c->window_type == WINDOW_TYPE_LONG ||
754 ✗ c->window_type == WINDOW_TYPE_LONG_START)) {
755 33 c->fdsp->vector_fmul_window(out, saved, buf, c->long_win, 512);
756 } else {
757 ✗ float *wout = out + 448;
758 ✗ memcpy(out, saved, 448 * sizeof(float));
759
760 ✗ if (c->window_type == WINDOW_TYPE_8SHORT) {
761 ✗ c->fdsp->vector_fmul_window(wout + 0*128, saved + 448, buf + 0*128, c->short_win, 64);
762 ✗ c->fdsp->vector_fmul_window(wout + 1*128, buf + 0*128 + 64, buf + 1*128, c->short_win, 64);
763 ✗ c->fdsp->vector_fmul_window(wout + 2*128, buf + 1*128 + 64, buf + 2*128, c->short_win, 64);
764 ✗ c->fdsp->vector_fmul_window(wout + 3*128, buf + 2*128 + 64, buf + 3*128, c->short_win, 64);
765 ✗ c->fdsp->vector_fmul_window(temp, buf + 3*128 + 64, buf + 4*128, c->short_win, 64);
766 ✗ memcpy(wout + 4*128, temp, 64 * sizeof(float));
767 } else {
768 ✗ c->fdsp->vector_fmul_window(wout, saved + 448, buf, c->short_win, 64);
769 ✗ memcpy(wout + 128, buf + 64, 448 * sizeof(float));
770 }
771 }
772
773 // buffer update
774
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 33 switch (c->window_type) {
775 ✗ case WINDOW_TYPE_8SHORT:
776 ✗ memcpy(saved, temp + 64, 64 * sizeof(float));
777 ✗ c->fdsp->vector_fmul_window(saved + 64, buf + 4*128 + 64, buf + 5*128, c->short_win, 64);
778 ✗ c->fdsp->vector_fmul_window(saved + 192, buf + 5*128 + 64, buf + 6*128, c->short_win, 64);
779 ✗ c->fdsp->vector_fmul_window(saved + 320, buf + 6*128 + 64, buf + 7*128, c->short_win, 64);
780 ✗ memcpy(saved + 448, buf + 7*128 + 64, 64 * sizeof(float));
781 ✗ break;
782 ✗ case WINDOW_TYPE_LONG_START:
783 ✗ memcpy(saved, buf + 512, 448 * sizeof(float));
784 ✗ memcpy(saved + 448, buf + 7*128 + 64, 64 * sizeof(float));
785 ✗ break;
786 33 case WINDOW_TYPE_LONG_STOP:
787 case WINDOW_TYPE_LONG:
788 33 memcpy(saved, buf + 512, 512 * sizeof(float));
789 33 break;
790 }
791 33 return 0;
792 }
793
794 33 static int on2avc_decode_subframe(On2AVCContext *c, const uint8_t *buf,
795 int buf_size, AVFrame *dst, int offset)
796 {
797 GetBitContext gb;
798 int i, ret;
799
800
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 33 if ((ret = init_get_bits8(&gb, buf, buf_size)) < 0)
801 ✗ return ret;
802
803
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 33 if (get_bits1(&gb)) {
804 ✗ av_log(c->avctx, AV_LOG_ERROR, "enh bit set\n");
805 ✗ return AVERROR_INVALIDDATA;
806 }
807 33 c->prev_window_type = c->window_type;
808 33 c->window_type = get_bits(&gb, 3);
809
810 33 c->band_start = c->modes[c->window_type].band_start;
811 33 c->num_windows = c->modes[c->window_type].num_windows;
812 33 c->num_bands = c->modes[c->window_type].num_bands;
813 33 c->is_long = (c->window_type != WINDOW_TYPE_8SHORT);
814
815 33 c->grouping[0] = 1;
816
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 33 for (i = 1; i < c->num_windows; i++)
817 ✗ c->grouping[i] = !get_bits1(&gb);
818
819 33 on2avc_read_ms_info(c, &gb);
820
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 66 for (i = 0; i < c->avctx->ch_layout.nb_channels; i++)
821
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 33 if ((ret = on2avc_read_channel_data(c, &gb, i)) < 0)
822 ✗ return AVERROR_INVALIDDATA;
823
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 33 if (c->avctx->ch_layout.nb_channels == 2 && c->ms_present)
824 ✗ on2avc_apply_ms(c);
825
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 33 if (c->window_type < WINDOW_TYPE_EXT4) {
826
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 66 for (i = 0; i < c->avctx->ch_layout.nb_channels; i++)
827 33 on2avc_reconstruct_channel(c, i, dst, offset);
828 } else {
829 ✗ on2avc_reconstruct_channel_ext(c, dst, offset);
830 }
831
832 33 return 0;
833 }
834
835 33 static int on2avc_decode_frame(AVCodecContext * avctx, AVFrame *frame,
836 int *got_frame_ptr, AVPacket *avpkt)
837 {
838 33 const uint8_t *buf = avpkt->data;
839 33 int buf_size = avpkt->size;
840 33 On2AVCContext *c = avctx->priv_data;
841 GetByteContext gb;
842 33 int num_frames = 0, frame_size, audio_off;
843 int ret;
844
845
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 33 if (c->is_av500) {
846 /* get output buffer */
847 33 frame->nb_samples = ON2AVC_SUBFRAME_SIZE;
848
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 33 if ((ret = ff_get_buffer(avctx, frame, 0)) < 0)
849 ✗ return ret;
850
851
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 33 if ((ret = on2avc_decode_subframe(c, buf, buf_size, frame, 0)) < 0)
852 ✗ return ret;
853 } else {
854 ✗ bytestream2_init(&gb, buf, buf_size);
855 ✗ while (bytestream2_get_bytes_left(&gb) > 2) {
856 ✗ frame_size = bytestream2_get_le16(&gb);
857 ✗ if (!frame_size || frame_size > bytestream2_get_bytes_left(&gb)) {
858 ✗ av_log(avctx, AV_LOG_ERROR, "Invalid subframe size %d\n",
859 frame_size);
860 ✗ return AVERROR_INVALIDDATA;
861 }
862 ✗ num_frames++;
863 ✗ bytestream2_skip(&gb, frame_size);
864 }
865 ✗ if (!num_frames) {
866 ✗ av_log(avctx, AV_LOG_ERROR, "No subframes present\n");
867 ✗ return AVERROR_INVALIDDATA;
868 }
869 ✗ if (num_frames > INT_MAX / ON2AVC_SUBFRAME_SIZE) {
870 ✗ av_log(avctx, AV_LOG_ERROR,
871 "Too many subframes (%d); per-frame sample count overflows\n",
872 num_frames);
873 ✗ return AVERROR_INVALIDDATA;
874 }
875
876 /* get output buffer */
877 ✗ frame->nb_samples = ON2AVC_SUBFRAME_SIZE * num_frames;
878 ✗ if ((ret = ff_get_buffer(avctx, frame, 0)) < 0)
879 ✗ return ret;
880
881 ✗ audio_off = 0;
882 ✗ bytestream2_init(&gb, buf, buf_size);
883 ✗ while (bytestream2_get_bytes_left(&gb) > 2) {
884 ✗ frame_size = bytestream2_get_le16(&gb);
885 ✗ if ((ret = on2avc_decode_subframe(c, gb.buffer, frame_size,
886 frame, audio_off)) < 0)
887 ✗ return ret;
888 ✗ audio_off += ON2AVC_SUBFRAME_SIZE;
889 ✗ bytestream2_skip(&gb, frame_size);
890 }
891 }
892
893 33 *got_frame_ptr = 1;
894
895 33 return buf_size;
896 }
897
898 3 static av_cold void on2avc_free_vlcs(On2AVCContext *c)
899 {
900 int i;
901
902 3 ff_vlc_free(&c->scale_diff);
903
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 48 for (i = 1; i < 16; i++)
904 45 ff_vlc_free(&c->cb_vlc[i]);
905 3 }
906
907 3 static av_cold int on2avc_decode_init(AVCodecContext *avctx)
908 {
909 3 On2AVCContext *c = avctx->priv_data;
910 3 const uint8_t *lens = ff_on2avc_cb_lens;
911 3 const uint16_t *syms = ff_on2avc_cb_syms;
912 3 int channels = avctx->ch_layout.nb_channels;
913 float scale;
914 int i, ret;
915
916
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 3 if (channels > 2U) {
917 ✗ avpriv_request_sample(avctx, "Decoding more than 2 channels");
918 ✗ return AVERROR_PATCHWELCOME;
919 }
920
921 3 c->avctx = avctx;
922 3 avctx->sample_fmt = AV_SAMPLE_FMT_FLTP;
923 3 av_channel_layout_uninit(&avctx->ch_layout);
924
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 3 avctx->ch_layout = (channels == 2) ? (AVChannelLayout)AV_CHANNEL_LAYOUT_STEREO :
925 (AVChannelLayout)AV_CHANNEL_LAYOUT_MONO;
926
927 3 c->is_av500 = (avctx->codec_tag == 0x500);
928
929
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 3 if (channels == 2)
930 ✗ av_log(avctx, AV_LOG_WARNING,
931 "Stereo mode support is not good, patch is welcome\n");
932
933 // We add -0.01 before ceil() to avoid any values to fall at exactly the
934 // midpoint between different ceil values. The results are identical to
935 // using pow(10, i / 10.0) without such bias
936
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 63 for (i = 0; i < 20; i++)
937 60 c->scale_tab[i] = ceil(ff_exp10(i * 0.1) * 16 - 0.01) / 32;
938
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 327 for (; i < 128; i++)
939 324 c->scale_tab[i] = ceil(ff_exp10(i * 0.1) * 0.5 - 0.01);
940
941
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 3 if (avctx->sample_rate < 32000 || channels == 1)
942 3 memcpy(c->long_win, ff_on2avc_window_long_24000,
943 1024 * sizeof(*c->long_win));
944 else
945 ✗ memcpy(c->long_win, ff_on2avc_window_long_32000,
946 1024 * sizeof(*c->long_win));
947 3 memcpy(c->short_win, ff_on2avc_window_short, 128 * sizeof(*c->short_win));
948
949 6 c->modes = (avctx->sample_rate <= 40000) ? ff_on2avc_modes_40
950
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 3 : ff_on2avc_modes_44;
951
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 3 c->wtf = (avctx->sample_rate <= 40000) ? wtf_40
952 : wtf_44;
953
954 3 scale = 1.0 / (1024*32768);
955
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 3 if ((ret = av_tx_init(&c->mdct, &c->mdct_fn, AV_TX_FLOAT_MDCT, 1, 1024, &scale, 0)) < 0)
956 ✗ return ret;
957
958 3 scale = 1.0 / (512*32768);
959
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 3 if ((ret = av_tx_init(&c->mdct_half, &c->mdct_half_fn, AV_TX_FLOAT_MDCT, 1, 512, &scale, 0)) < 0)
960 ✗ return ret;
961
962 3 scale = 1.0 / (128*32768);
963
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 3 if ((ret = av_tx_init(&c->mdct_small, &c->mdct_small_fn, AV_TX_FLOAT_MDCT, 1, 128, &scale, 0)) < 0)
964 ✗ return ret;
965
966
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 3 if ((ret = av_tx_init(&c->fft512, &c->fft512_fn, AV_TX_FLOAT_FFT, 1, 512, NULL, 0)) < 0)
967 ✗ return ret;
968
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 3 if ((ret = av_tx_init(&c->fft256, &c->fft256_fn, AV_TX_FLOAT_FFT, 1, 256, NULL, 0)) < 0)
969 ✗ return ret;
970
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 3 if ((ret = av_tx_init(&c->fft128, &c->fft128_fn, AV_TX_FLOAT_FFT, 0, 128, NULL, 0)) < 0)
971 ✗ return ret;
972
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 3 if ((ret = av_tx_init(&c->fft64, &c->fft64_fn, AV_TX_FLOAT_FFT, 0, 64, NULL, 0)) < 0)
973 ✗ return ret;
974
975 3 c->fdsp = avpriv_float_dsp_alloc(avctx->flags & AV_CODEC_FLAG_BITEXACT);
976
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 3 if (!c->fdsp)
977 ✗ return AVERROR(ENOMEM);
978
979 3 ret = ff_vlc_init_from_lengths(&c->scale_diff, 9, ON2AVC_SCALE_DIFFS,
980 ff_on2avc_scale_diff_bits, 1,
981 ff_on2avc_scale_diff_syms, 1, 1, -60, 0, avctx);
982
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 3 if (ret < 0)
983 ✗ goto vlc_fail;
984
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 48 for (i = 1; i < 16; i++) {
985 45 int idx = i - 1;
986 45 ret = ff_vlc_init_from_lengths(&c->cb_vlc[i], 9, ff_on2avc_cb_elems[idx],
987 lens, 1,
988 syms, 2, 2, 0, 0, avctx);
989
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 45 if (ret < 0)
990 ✗ goto vlc_fail;
991 45 lens += ff_on2avc_cb_elems[idx];
992 45 syms += ff_on2avc_cb_elems[idx];
993 }
994
995 3 return 0;
996 ✗ vlc_fail:
997 ✗ av_log(avctx, AV_LOG_ERROR, "Cannot init VLC\n");
998 ✗ return ret;
999 }
1000
1001 3 static av_cold int on2avc_decode_close(AVCodecContext *avctx)
1002 {
1003 3 On2AVCContext *c = avctx->priv_data;
1004
1005 3 av_tx_uninit(&c->mdct);
1006 3 av_tx_uninit(&c->mdct_half);
1007 3 av_tx_uninit(&c->mdct_small);
1008 3 av_tx_uninit(&c->fft64);
1009 3 av_tx_uninit(&c->fft128);
1010 3 av_tx_uninit(&c->fft256);
1011 3 av_tx_uninit(&c->fft512);
1012
1013 3 av_freep(&c->fdsp);
1014
1015 3 on2avc_free_vlcs(c);
1016
1017 3 return 0;
1018 }
1019
1020
1021 const FFCodec ff_on2avc_decoder = {
1022 .p.name = "on2avc",
1023 CODEC_LONG_NAME("On2 Audio for Video Codec"),
1024 .p.type = AVMEDIA_TYPE_AUDIO,
1025 .p.id = AV_CODEC_ID_ON2AVC,
1026 .priv_data_size = sizeof(On2AVCContext),
1027 .init = on2avc_decode_init,
1028 FF_CODEC_DECODE_CB(on2avc_decode_frame),
1029 .close = on2avc_decode_close,
1030 .p.capabilities = AV_CODEC_CAP_DR1,
1031 .caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
1032 };
1033