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1 | /* |
2 | * MPEG-4 Parametric Stereo decoding functions | |
3 | * Copyright (c) 2010 Alex Converse <alex.converse@gmail.com> | |
4 | * | |
5 | * This file is part of FFmpeg. | |
6 | * | |
7 | * FFmpeg is free software; you can redistribute it and/or | |
8 | * modify it under the terms of the GNU Lesser General Public | |
9 | * License as published by the Free Software Foundation; either | |
10 | * version 2.1 of the License, or (at your option) any later version. | |
11 | * | |
12 | * FFmpeg is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * Lesser General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU Lesser General Public | |
18 | * License along with FFmpeg; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
20 | */ | |
21 | ||
22 | #include <stdint.h> | |
23 | #include "libavutil/common.h" | |
24 | #include "libavutil/internal.h" | |
25 | #include "libavutil/mathematics.h" | |
26 | #include "avcodec.h" | |
27 | #include "get_bits.h" | |
28 | #include "aacps.h" | |
29 | #include "aacps_tablegen.h" | |
30 | #include "aacpsdata.c" | |
31 | ||
32 | #define PS_BASELINE 0 ///< Operate in Baseline PS mode | |
33 | ///< Baseline implies 10 or 20 stereo bands, | |
34 | ///< mixing mode A, and no ipd/opd | |
35 | ||
36 | #define numQMFSlots 32 //numTimeSlots * RATE | |
37 | ||
38 | static const int8_t num_env_tab[2][4] = { | |
39 | { 0, 1, 2, 4, }, | |
40 | { 1, 2, 3, 4, }, | |
41 | }; | |
42 | ||
43 | static const int8_t nr_iidicc_par_tab[] = { | |
44 | 10, 20, 34, 10, 20, 34, | |
45 | }; | |
46 | ||
47 | static const int8_t nr_iidopd_par_tab[] = { | |
48 | 5, 11, 17, 5, 11, 17, | |
49 | }; | |
50 | ||
51 | enum { | |
52 | huff_iid_df1, | |
53 | huff_iid_dt1, | |
54 | huff_iid_df0, | |
55 | huff_iid_dt0, | |
56 | huff_icc_df, | |
57 | huff_icc_dt, | |
58 | huff_ipd_df, | |
59 | huff_ipd_dt, | |
60 | huff_opd_df, | |
61 | huff_opd_dt, | |
62 | }; | |
63 | ||
64 | static const int huff_iid[] = { | |
65 | huff_iid_df0, | |
66 | huff_iid_df1, | |
67 | huff_iid_dt0, | |
68 | huff_iid_dt1, | |
69 | }; | |
70 | ||
71 | static VLC vlc_ps[10]; | |
72 | ||
73 | #define READ_PAR_DATA(PAR, OFFSET, MASK, ERR_CONDITION) \ | |
74 | /** \ | |
75 | * Read Inter-channel Intensity Difference/Inter-Channel Coherence/ \ | |
76 | * Inter-channel Phase Difference/Overall Phase Difference parameters from the \ | |
77 | * bitstream. \ | |
78 | * \ | |
79 | * @param avctx contains the current codec context \ | |
80 | * @param gb pointer to the input bitstream \ | |
81 | * @param ps pointer to the Parametric Stereo context \ | |
82 | * @param PAR pointer to the parameter to be read \ | |
83 | * @param e envelope to decode \ | |
84 | * @param dt 1: time delta-coded, 0: frequency delta-coded \ | |
85 | */ \ | |
86 | static int read_ ## PAR ## _data(AVCodecContext *avctx, GetBitContext *gb, PSContext *ps, \ | |
87 | int8_t (*PAR)[PS_MAX_NR_IIDICC], int table_idx, int e, int dt) \ | |
88 | { \ | |
89 | int b, num = ps->nr_ ## PAR ## _par; \ | |
90 | VLC_TYPE (*vlc_table)[2] = vlc_ps[table_idx].table; \ | |
91 | if (dt) { \ | |
92 | int e_prev = e ? e - 1 : ps->num_env_old - 1; \ | |
93 | e_prev = FFMAX(e_prev, 0); \ | |
94 | for (b = 0; b < num; b++) { \ | |
95 | int val = PAR[e_prev][b] + get_vlc2(gb, vlc_table, 9, 3) - OFFSET; \ | |
96 | if (MASK) val &= MASK; \ | |
97 | PAR[e][b] = val; \ | |
98 | if (ERR_CONDITION) \ | |
99 | goto err; \ | |
100 | } \ | |
101 | } else { \ | |
102 | int val = 0; \ | |
103 | for (b = 0; b < num; b++) { \ | |
104 | val += get_vlc2(gb, vlc_table, 9, 3) - OFFSET; \ | |
105 | if (MASK) val &= MASK; \ | |
106 | PAR[e][b] = val; \ | |
107 | if (ERR_CONDITION) \ | |
108 | goto err; \ | |
109 | } \ | |
110 | } \ | |
111 | return 0; \ | |
112 | err: \ | |
113 | av_log(avctx, AV_LOG_ERROR, "illegal "#PAR"\n"); \ | |
114 | return -1; \ | |
115 | } | |
116 | ||
117 | READ_PAR_DATA(iid, huff_offset[table_idx], 0, FFABS(ps->iid_par[e][b]) > 7 + 8 * ps->iid_quant) | |
118 | READ_PAR_DATA(icc, huff_offset[table_idx], 0, ps->icc_par[e][b] > 7U) | |
119 | READ_PAR_DATA(ipdopd, 0, 0x07, 0) | |
120 | ||
121 | static int ps_read_extension_data(GetBitContext *gb, PSContext *ps, int ps_extension_id) | |
122 | { | |
123 | int e; | |
124 | int count = get_bits_count(gb); | |
125 | ||
126 | if (ps_extension_id) | |
127 | return 0; | |
128 | ||
129 | ps->enable_ipdopd = get_bits1(gb); | |
130 | if (ps->enable_ipdopd) { | |
131 | for (e = 0; e < ps->num_env; e++) { | |
132 | int dt = get_bits1(gb); | |
133 | read_ipdopd_data(NULL, gb, ps, ps->ipd_par, dt ? huff_ipd_dt : huff_ipd_df, e, dt); | |
134 | dt = get_bits1(gb); | |
135 | read_ipdopd_data(NULL, gb, ps, ps->opd_par, dt ? huff_opd_dt : huff_opd_df, e, dt); | |
136 | } | |
137 | } | |
138 | skip_bits1(gb); //reserved_ps | |
139 | return get_bits_count(gb) - count; | |
140 | } | |
141 | ||
142 | static void ipdopd_reset(int8_t *ipd_hist, int8_t *opd_hist) | |
143 | { | |
144 | int i; | |
145 | for (i = 0; i < PS_MAX_NR_IPDOPD; i++) { | |
146 | opd_hist[i] = 0; | |
147 | ipd_hist[i] = 0; | |
148 | } | |
149 | } | |
150 | ||
151 | int ff_ps_read_data(AVCodecContext *avctx, GetBitContext *gb_host, PSContext *ps, int bits_left) | |
152 | { | |
153 | int e; | |
154 | int bit_count_start = get_bits_count(gb_host); | |
155 | int header; | |
156 | int bits_consumed; | |
157 | GetBitContext gbc = *gb_host, *gb = &gbc; | |
158 | ||
159 | header = get_bits1(gb); | |
160 | if (header) { //enable_ps_header | |
161 | ps->enable_iid = get_bits1(gb); | |
162 | if (ps->enable_iid) { | |
163 | int iid_mode = get_bits(gb, 3); | |
164 | if (iid_mode > 5) { | |
165 | av_log(avctx, AV_LOG_ERROR, "iid_mode %d is reserved.\n", | |
166 | iid_mode); | |
167 | goto err; | |
168 | } | |
169 | ps->nr_iid_par = nr_iidicc_par_tab[iid_mode]; | |
170 | ps->iid_quant = iid_mode > 2; | |
171 | ps->nr_ipdopd_par = nr_iidopd_par_tab[iid_mode]; | |
172 | } | |
173 | ps->enable_icc = get_bits1(gb); | |
174 | if (ps->enable_icc) { | |
175 | ps->icc_mode = get_bits(gb, 3); | |
176 | if (ps->icc_mode > 5) { | |
177 | av_log(avctx, AV_LOG_ERROR, "icc_mode %d is reserved.\n", | |
178 | ps->icc_mode); | |
179 | goto err; | |
180 | } | |
181 | ps->nr_icc_par = nr_iidicc_par_tab[ps->icc_mode]; | |
182 | } | |
183 | ps->enable_ext = get_bits1(gb); | |
184 | } | |
185 | ||
186 | ps->frame_class = get_bits1(gb); | |
187 | ps->num_env_old = ps->num_env; | |
188 | ps->num_env = num_env_tab[ps->frame_class][get_bits(gb, 2)]; | |
189 | ||
190 | ps->border_position[0] = -1; | |
191 | if (ps->frame_class) { | |
192 | for (e = 1; e <= ps->num_env; e++) | |
193 | ps->border_position[e] = get_bits(gb, 5); | |
194 | } else | |
195 | for (e = 1; e <= ps->num_env; e++) | |
196 | ps->border_position[e] = (e * numQMFSlots >> ff_log2_tab[ps->num_env]) - 1; | |
197 | ||
198 | if (ps->enable_iid) { | |
199 | for (e = 0; e < ps->num_env; e++) { | |
200 | int dt = get_bits1(gb); | |
201 | if (read_iid_data(avctx, gb, ps, ps->iid_par, huff_iid[2*dt+ps->iid_quant], e, dt)) | |
202 | goto err; | |
203 | } | |
204 | } else | |
205 | memset(ps->iid_par, 0, sizeof(ps->iid_par)); | |
206 | ||
207 | if (ps->enable_icc) | |
208 | for (e = 0; e < ps->num_env; e++) { | |
209 | int dt = get_bits1(gb); | |
210 | if (read_icc_data(avctx, gb, ps, ps->icc_par, dt ? huff_icc_dt : huff_icc_df, e, dt)) | |
211 | goto err; | |
212 | } | |
213 | else | |
214 | memset(ps->icc_par, 0, sizeof(ps->icc_par)); | |
215 | ||
216 | if (ps->enable_ext) { | |
217 | int cnt = get_bits(gb, 4); | |
218 | if (cnt == 15) { | |
219 | cnt += get_bits(gb, 8); | |
220 | } | |
221 | cnt *= 8; | |
222 | while (cnt > 7) { | |
223 | int ps_extension_id = get_bits(gb, 2); | |
224 | cnt -= 2 + ps_read_extension_data(gb, ps, ps_extension_id); | |
225 | } | |
226 | if (cnt < 0) { | |
227 | av_log(avctx, AV_LOG_ERROR, "ps extension overflow %d\n", cnt); | |
228 | goto err; | |
229 | } | |
230 | skip_bits(gb, cnt); | |
231 | } | |
232 | ||
233 | ps->enable_ipdopd &= !PS_BASELINE; | |
234 | ||
235 | //Fix up envelopes | |
236 | if (!ps->num_env || ps->border_position[ps->num_env] < numQMFSlots - 1) { | |
237 | //Create a fake envelope | |
238 | int source = ps->num_env ? ps->num_env - 1 : ps->num_env_old - 1; | |
239 | int b; | |
240 | if (source >= 0 && source != ps->num_env) { | |
241 | if (ps->enable_iid) { | |
242 | memcpy(ps->iid_par+ps->num_env, ps->iid_par+source, sizeof(ps->iid_par[0])); | |
243 | } | |
244 | if (ps->enable_icc) { | |
245 | memcpy(ps->icc_par+ps->num_env, ps->icc_par+source, sizeof(ps->icc_par[0])); | |
246 | } | |
247 | if (ps->enable_ipdopd) { | |
248 | memcpy(ps->ipd_par+ps->num_env, ps->ipd_par+source, sizeof(ps->ipd_par[0])); | |
249 | memcpy(ps->opd_par+ps->num_env, ps->opd_par+source, sizeof(ps->opd_par[0])); | |
250 | } | |
251 | } | |
252 | if (ps->enable_iid){ | |
253 | for (b = 0; b < ps->nr_iid_par; b++) { | |
254 | if (FFABS(ps->iid_par[ps->num_env][b]) > 7 + 8 * ps->iid_quant) { | |
255 | av_log(avctx, AV_LOG_ERROR, "iid_par invalid\n"); | |
256 | goto err; | |
257 | } | |
258 | } | |
259 | } | |
260 | if (ps->enable_icc){ | |
261 | for (b = 0; b < ps->nr_iid_par; b++) { | |
262 | if (ps->icc_par[ps->num_env][b] > 7U) { | |
263 | av_log(avctx, AV_LOG_ERROR, "icc_par invalid\n"); | |
264 | goto err; | |
265 | } | |
266 | } | |
267 | } | |
268 | ps->num_env++; | |
269 | ps->border_position[ps->num_env] = numQMFSlots - 1; | |
270 | } | |
271 | ||
272 | ||
273 | ps->is34bands_old = ps->is34bands; | |
274 | if (!PS_BASELINE && (ps->enable_iid || ps->enable_icc)) | |
275 | ps->is34bands = (ps->enable_iid && ps->nr_iid_par == 34) || | |
276 | (ps->enable_icc && ps->nr_icc_par == 34); | |
277 | ||
278 | //Baseline | |
279 | if (!ps->enable_ipdopd) { | |
280 | memset(ps->ipd_par, 0, sizeof(ps->ipd_par)); | |
281 | memset(ps->opd_par, 0, sizeof(ps->opd_par)); | |
282 | } | |
283 | ||
284 | if (header) | |
285 | ps->start = 1; | |
286 | ||
287 | bits_consumed = get_bits_count(gb) - bit_count_start; | |
288 | if (bits_consumed <= bits_left) { | |
289 | skip_bits_long(gb_host, bits_consumed); | |
290 | return bits_consumed; | |
291 | } | |
292 | av_log(avctx, AV_LOG_ERROR, "Expected to read %d PS bits actually read %d.\n", bits_left, bits_consumed); | |
293 | err: | |
294 | ps->start = 0; | |
295 | skip_bits_long(gb_host, bits_left); | |
296 | memset(ps->iid_par, 0, sizeof(ps->iid_par)); | |
297 | memset(ps->icc_par, 0, sizeof(ps->icc_par)); | |
298 | memset(ps->ipd_par, 0, sizeof(ps->ipd_par)); | |
299 | memset(ps->opd_par, 0, sizeof(ps->opd_par)); | |
300 | return bits_left; | |
301 | } | |
302 | ||
303 | /** Split one subband into 2 subsubbands with a symmetric real filter. | |
304 | * The filter must have its non-center even coefficients equal to zero. */ | |
305 | static void hybrid2_re(float (*in)[2], float (*out)[32][2], const float filter[8], int len, int reverse) | |
306 | { | |
307 | int i, j; | |
308 | for (i = 0; i < len; i++, in++) { | |
309 | float re_in = filter[6] * in[6][0]; //real inphase | |
310 | float re_op = 0.0f; //real out of phase | |
311 | float im_in = filter[6] * in[6][1]; //imag inphase | |
312 | float im_op = 0.0f; //imag out of phase | |
313 | for (j = 0; j < 6; j += 2) { | |
314 | re_op += filter[j+1] * (in[j+1][0] + in[12-j-1][0]); | |
315 | im_op += filter[j+1] * (in[j+1][1] + in[12-j-1][1]); | |
316 | } | |
317 | out[ reverse][i][0] = re_in + re_op; | |
318 | out[ reverse][i][1] = im_in + im_op; | |
319 | out[!reverse][i][0] = re_in - re_op; | |
320 | out[!reverse][i][1] = im_in - im_op; | |
321 | } | |
322 | } | |
323 | ||
324 | /** Split one subband into 6 subsubbands with a complex filter */ | |
325 | static void hybrid6_cx(PSDSPContext *dsp, float (*in)[2], float (*out)[32][2], | |
326 | TABLE_CONST float (*filter)[8][2], int len) | |
327 | { | |
328 | int i; | |
329 | int N = 8; | |
330 | LOCAL_ALIGNED_16(float, temp, [8], [2]); | |
331 | ||
332 | for (i = 0; i < len; i++, in++) { | |
333 | dsp->hybrid_analysis(temp, in, (const float (*)[8][2]) filter, 1, N); | |
334 | out[0][i][0] = temp[6][0]; | |
335 | out[0][i][1] = temp[6][1]; | |
336 | out[1][i][0] = temp[7][0]; | |
337 | out[1][i][1] = temp[7][1]; | |
338 | out[2][i][0] = temp[0][0]; | |
339 | out[2][i][1] = temp[0][1]; | |
340 | out[3][i][0] = temp[1][0]; | |
341 | out[3][i][1] = temp[1][1]; | |
342 | out[4][i][0] = temp[2][0] + temp[5][0]; | |
343 | out[4][i][1] = temp[2][1] + temp[5][1]; | |
344 | out[5][i][0] = temp[3][0] + temp[4][0]; | |
345 | out[5][i][1] = temp[3][1] + temp[4][1]; | |
346 | } | |
347 | } | |
348 | ||
349 | static void hybrid4_8_12_cx(PSDSPContext *dsp, | |
350 | float (*in)[2], float (*out)[32][2], | |
351 | TABLE_CONST float (*filter)[8][2], int N, int len) | |
352 | { | |
353 | int i; | |
354 | ||
355 | for (i = 0; i < len; i++, in++) { | |
356 | dsp->hybrid_analysis(out[0] + i, in, (const float (*)[8][2]) filter, 32, N); | |
357 | } | |
358 | } | |
359 | ||
360 | static void hybrid_analysis(PSDSPContext *dsp, float out[91][32][2], | |
361 | float in[5][44][2], float L[2][38][64], | |
362 | int is34, int len) | |
363 | { | |
364 | int i, j; | |
365 | for (i = 0; i < 5; i++) { | |
366 | for (j = 0; j < 38; j++) { | |
367 | in[i][j+6][0] = L[0][j][i]; | |
368 | in[i][j+6][1] = L[1][j][i]; | |
369 | } | |
370 | } | |
371 | if (is34) { | |
372 | hybrid4_8_12_cx(dsp, in[0], out, f34_0_12, 12, len); | |
373 | hybrid4_8_12_cx(dsp, in[1], out+12, f34_1_8, 8, len); | |
374 | hybrid4_8_12_cx(dsp, in[2], out+20, f34_2_4, 4, len); | |
375 | hybrid4_8_12_cx(dsp, in[3], out+24, f34_2_4, 4, len); | |
376 | hybrid4_8_12_cx(dsp, in[4], out+28, f34_2_4, 4, len); | |
377 | dsp->hybrid_analysis_ileave(out + 27, L, 5, len); | |
378 | } else { | |
379 | hybrid6_cx(dsp, in[0], out, f20_0_8, len); | |
380 | hybrid2_re(in[1], out+6, g1_Q2, len, 1); | |
381 | hybrid2_re(in[2], out+8, g1_Q2, len, 0); | |
382 | dsp->hybrid_analysis_ileave(out + 7, L, 3, len); | |
383 | } | |
384 | //update in_buf | |
385 | for (i = 0; i < 5; i++) { | |
386 | memcpy(in[i], in[i]+32, 6 * sizeof(in[i][0])); | |
387 | } | |
388 | } | |
389 | ||
390 | static void hybrid_synthesis(PSDSPContext *dsp, float out[2][38][64], | |
391 | float in[91][32][2], int is34, int len) | |
392 | { | |
393 | int i, n; | |
394 | if (is34) { | |
395 | for (n = 0; n < len; n++) { | |
396 | memset(out[0][n], 0, 5*sizeof(out[0][n][0])); | |
397 | memset(out[1][n], 0, 5*sizeof(out[1][n][0])); | |
398 | for (i = 0; i < 12; i++) { | |
399 | out[0][n][0] += in[ i][n][0]; | |
400 | out[1][n][0] += in[ i][n][1]; | |
401 | } | |
402 | for (i = 0; i < 8; i++) { | |
403 | out[0][n][1] += in[12+i][n][0]; | |
404 | out[1][n][1] += in[12+i][n][1]; | |
405 | } | |
406 | for (i = 0; i < 4; i++) { | |
407 | out[0][n][2] += in[20+i][n][0]; | |
408 | out[1][n][2] += in[20+i][n][1]; | |
409 | out[0][n][3] += in[24+i][n][0]; | |
410 | out[1][n][3] += in[24+i][n][1]; | |
411 | out[0][n][4] += in[28+i][n][0]; | |
412 | out[1][n][4] += in[28+i][n][1]; | |
413 | } | |
414 | } | |
415 | dsp->hybrid_synthesis_deint(out, in + 27, 5, len); | |
416 | } else { | |
417 | for (n = 0; n < len; n++) { | |
418 | out[0][n][0] = in[0][n][0] + in[1][n][0] + in[2][n][0] + | |
419 | in[3][n][0] + in[4][n][0] + in[5][n][0]; | |
420 | out[1][n][0] = in[0][n][1] + in[1][n][1] + in[2][n][1] + | |
421 | in[3][n][1] + in[4][n][1] + in[5][n][1]; | |
422 | out[0][n][1] = in[6][n][0] + in[7][n][0]; | |
423 | out[1][n][1] = in[6][n][1] + in[7][n][1]; | |
424 | out[0][n][2] = in[8][n][0] + in[9][n][0]; | |
425 | out[1][n][2] = in[8][n][1] + in[9][n][1]; | |
426 | } | |
427 | dsp->hybrid_synthesis_deint(out, in + 7, 3, len); | |
428 | } | |
429 | } | |
430 | ||
431 | /// All-pass filter decay slope | |
432 | #define DECAY_SLOPE 0.05f | |
433 | /// Number of frequency bands that can be addressed by the parameter index, b(k) | |
434 | static const int NR_PAR_BANDS[] = { 20, 34 }; | |
435 | static const int NR_IPDOPD_BANDS[] = { 11, 17 }; | |
436 | /// Number of frequency bands that can be addressed by the sub subband index, k | |
437 | static const int NR_BANDS[] = { 71, 91 }; | |
438 | /// Start frequency band for the all-pass filter decay slope | |
439 | static const int DECAY_CUTOFF[] = { 10, 32 }; | |
440 | /// Number of all-pass filer bands | |
441 | static const int NR_ALLPASS_BANDS[] = { 30, 50 }; | |
442 | /// First stereo band using the short one sample delay | |
443 | static const int SHORT_DELAY_BAND[] = { 42, 62 }; | |
444 | ||
445 | /** Table 8.46 */ | |
446 | static void map_idx_10_to_20(int8_t *par_mapped, const int8_t *par, int full) | |
447 | { | |
448 | int b; | |
449 | if (full) | |
450 | b = 9; | |
451 | else { | |
452 | b = 4; | |
453 | par_mapped[10] = 0; | |
454 | } | |
455 | for (; b >= 0; b--) { | |
456 | par_mapped[2*b+1] = par_mapped[2*b] = par[b]; | |
457 | } | |
458 | } | |
459 | ||
460 | static void map_idx_34_to_20(int8_t *par_mapped, const int8_t *par, int full) | |
461 | { | |
462 | par_mapped[ 0] = (2*par[ 0] + par[ 1]) / 3; | |
463 | par_mapped[ 1] = ( par[ 1] + 2*par[ 2]) / 3; | |
464 | par_mapped[ 2] = (2*par[ 3] + par[ 4]) / 3; | |
465 | par_mapped[ 3] = ( par[ 4] + 2*par[ 5]) / 3; | |
466 | par_mapped[ 4] = ( par[ 6] + par[ 7]) / 2; | |
467 | par_mapped[ 5] = ( par[ 8] + par[ 9]) / 2; | |
468 | par_mapped[ 6] = par[10]; | |
469 | par_mapped[ 7] = par[11]; | |
470 | par_mapped[ 8] = ( par[12] + par[13]) / 2; | |
471 | par_mapped[ 9] = ( par[14] + par[15]) / 2; | |
472 | par_mapped[10] = par[16]; | |
473 | if (full) { | |
474 | par_mapped[11] = par[17]; | |
475 | par_mapped[12] = par[18]; | |
476 | par_mapped[13] = par[19]; | |
477 | par_mapped[14] = ( par[20] + par[21]) / 2; | |
478 | par_mapped[15] = ( par[22] + par[23]) / 2; | |
479 | par_mapped[16] = ( par[24] + par[25]) / 2; | |
480 | par_mapped[17] = ( par[26] + par[27]) / 2; | |
481 | par_mapped[18] = ( par[28] + par[29] + par[30] + par[31]) / 4; | |
482 | par_mapped[19] = ( par[32] + par[33]) / 2; | |
483 | } | |
484 | } | |
485 | ||
486 | static void map_val_34_to_20(float par[PS_MAX_NR_IIDICC]) | |
487 | { | |
488 | par[ 0] = (2*par[ 0] + par[ 1]) * 0.33333333f; | |
489 | par[ 1] = ( par[ 1] + 2*par[ 2]) * 0.33333333f; | |
490 | par[ 2] = (2*par[ 3] + par[ 4]) * 0.33333333f; | |
491 | par[ 3] = ( par[ 4] + 2*par[ 5]) * 0.33333333f; | |
492 | par[ 4] = ( par[ 6] + par[ 7]) * 0.5f; | |
493 | par[ 5] = ( par[ 8] + par[ 9]) * 0.5f; | |
494 | par[ 6] = par[10]; | |
495 | par[ 7] = par[11]; | |
496 | par[ 8] = ( par[12] + par[13]) * 0.5f; | |
497 | par[ 9] = ( par[14] + par[15]) * 0.5f; | |
498 | par[10] = par[16]; | |
499 | par[11] = par[17]; | |
500 | par[12] = par[18]; | |
501 | par[13] = par[19]; | |
502 | par[14] = ( par[20] + par[21]) * 0.5f; | |
503 | par[15] = ( par[22] + par[23]) * 0.5f; | |
504 | par[16] = ( par[24] + par[25]) * 0.5f; | |
505 | par[17] = ( par[26] + par[27]) * 0.5f; | |
506 | par[18] = ( par[28] + par[29] + par[30] + par[31]) * 0.25f; | |
507 | par[19] = ( par[32] + par[33]) * 0.5f; | |
508 | } | |
509 | ||
510 | static void map_idx_10_to_34(int8_t *par_mapped, const int8_t *par, int full) | |
511 | { | |
512 | if (full) { | |
513 | par_mapped[33] = par[9]; | |
514 | par_mapped[32] = par[9]; | |
515 | par_mapped[31] = par[9]; | |
516 | par_mapped[30] = par[9]; | |
517 | par_mapped[29] = par[9]; | |
518 | par_mapped[28] = par[9]; | |
519 | par_mapped[27] = par[8]; | |
520 | par_mapped[26] = par[8]; | |
521 | par_mapped[25] = par[8]; | |
522 | par_mapped[24] = par[8]; | |
523 | par_mapped[23] = par[7]; | |
524 | par_mapped[22] = par[7]; | |
525 | par_mapped[21] = par[7]; | |
526 | par_mapped[20] = par[7]; | |
527 | par_mapped[19] = par[6]; | |
528 | par_mapped[18] = par[6]; | |
529 | par_mapped[17] = par[5]; | |
530 | par_mapped[16] = par[5]; | |
531 | } else { | |
532 | par_mapped[16] = 0; | |
533 | } | |
534 | par_mapped[15] = par[4]; | |
535 | par_mapped[14] = par[4]; | |
536 | par_mapped[13] = par[4]; | |
537 | par_mapped[12] = par[4]; | |
538 | par_mapped[11] = par[3]; | |
539 | par_mapped[10] = par[3]; | |
540 | par_mapped[ 9] = par[2]; | |
541 | par_mapped[ 8] = par[2]; | |
542 | par_mapped[ 7] = par[2]; | |
543 | par_mapped[ 6] = par[2]; | |
544 | par_mapped[ 5] = par[1]; | |
545 | par_mapped[ 4] = par[1]; | |
546 | par_mapped[ 3] = par[1]; | |
547 | par_mapped[ 2] = par[0]; | |
548 | par_mapped[ 1] = par[0]; | |
549 | par_mapped[ 0] = par[0]; | |
550 | } | |
551 | ||
552 | static void map_idx_20_to_34(int8_t *par_mapped, const int8_t *par, int full) | |
553 | { | |
554 | if (full) { | |
555 | par_mapped[33] = par[19]; | |
556 | par_mapped[32] = par[19]; | |
557 | par_mapped[31] = par[18]; | |
558 | par_mapped[30] = par[18]; | |
559 | par_mapped[29] = par[18]; | |
560 | par_mapped[28] = par[18]; | |
561 | par_mapped[27] = par[17]; | |
562 | par_mapped[26] = par[17]; | |
563 | par_mapped[25] = par[16]; | |
564 | par_mapped[24] = par[16]; | |
565 | par_mapped[23] = par[15]; | |
566 | par_mapped[22] = par[15]; | |
567 | par_mapped[21] = par[14]; | |
568 | par_mapped[20] = par[14]; | |
569 | par_mapped[19] = par[13]; | |
570 | par_mapped[18] = par[12]; | |
571 | par_mapped[17] = par[11]; | |
572 | } | |
573 | par_mapped[16] = par[10]; | |
574 | par_mapped[15] = par[ 9]; | |
575 | par_mapped[14] = par[ 9]; | |
576 | par_mapped[13] = par[ 8]; | |
577 | par_mapped[12] = par[ 8]; | |
578 | par_mapped[11] = par[ 7]; | |
579 | par_mapped[10] = par[ 6]; | |
580 | par_mapped[ 9] = par[ 5]; | |
581 | par_mapped[ 8] = par[ 5]; | |
582 | par_mapped[ 7] = par[ 4]; | |
583 | par_mapped[ 6] = par[ 4]; | |
584 | par_mapped[ 5] = par[ 3]; | |
585 | par_mapped[ 4] = (par[ 2] + par[ 3]) / 2; | |
586 | par_mapped[ 3] = par[ 2]; | |
587 | par_mapped[ 2] = par[ 1]; | |
588 | par_mapped[ 1] = (par[ 0] + par[ 1]) / 2; | |
589 | par_mapped[ 0] = par[ 0]; | |
590 | } | |
591 | ||
592 | static void map_val_20_to_34(float par[PS_MAX_NR_IIDICC]) | |
593 | { | |
594 | par[33] = par[19]; | |
595 | par[32] = par[19]; | |
596 | par[31] = par[18]; | |
597 | par[30] = par[18]; | |
598 | par[29] = par[18]; | |
599 | par[28] = par[18]; | |
600 | par[27] = par[17]; | |
601 | par[26] = par[17]; | |
602 | par[25] = par[16]; | |
603 | par[24] = par[16]; | |
604 | par[23] = par[15]; | |
605 | par[22] = par[15]; | |
606 | par[21] = par[14]; | |
607 | par[20] = par[14]; | |
608 | par[19] = par[13]; | |
609 | par[18] = par[12]; | |
610 | par[17] = par[11]; | |
611 | par[16] = par[10]; | |
612 | par[15] = par[ 9]; | |
613 | par[14] = par[ 9]; | |
614 | par[13] = par[ 8]; | |
615 | par[12] = par[ 8]; | |
616 | par[11] = par[ 7]; | |
617 | par[10] = par[ 6]; | |
618 | par[ 9] = par[ 5]; | |
619 | par[ 8] = par[ 5]; | |
620 | par[ 7] = par[ 4]; | |
621 | par[ 6] = par[ 4]; | |
622 | par[ 5] = par[ 3]; | |
623 | par[ 4] = (par[ 2] + par[ 3]) * 0.5f; | |
624 | par[ 3] = par[ 2]; | |
625 | par[ 2] = par[ 1]; | |
626 | par[ 1] = (par[ 0] + par[ 1]) * 0.5f; | |
627 | } | |
628 | ||
629 | static void decorrelation(PSContext *ps, float (*out)[32][2], const float (*s)[32][2], int is34) | |
630 | { | |
631 | LOCAL_ALIGNED_16(float, power, [34], [PS_QMF_TIME_SLOTS]); | |
632 | LOCAL_ALIGNED_16(float, transient_gain, [34], [PS_QMF_TIME_SLOTS]); | |
633 | float *peak_decay_nrg = ps->peak_decay_nrg; | |
634 | float *power_smooth = ps->power_smooth; | |
635 | float *peak_decay_diff_smooth = ps->peak_decay_diff_smooth; | |
636 | float (*delay)[PS_QMF_TIME_SLOTS + PS_MAX_DELAY][2] = ps->delay; | |
637 | float (*ap_delay)[PS_AP_LINKS][PS_QMF_TIME_SLOTS + PS_MAX_AP_DELAY][2] = ps->ap_delay; | |
638 | const int8_t *k_to_i = is34 ? k_to_i_34 : k_to_i_20; | |
639 | const float peak_decay_factor = 0.76592833836465f; | |
640 | const float transient_impact = 1.5f; | |
641 | const float a_smooth = 0.25f; ///< Smoothing coefficient | |
642 | int i, k, m, n; | |
643 | int n0 = 0, nL = 32; | |
644 | ||
645 | memset(power, 0, 34 * sizeof(*power)); | |
646 | ||
647 | if (is34 != ps->is34bands_old) { | |
648 | memset(ps->peak_decay_nrg, 0, sizeof(ps->peak_decay_nrg)); | |
649 | memset(ps->power_smooth, 0, sizeof(ps->power_smooth)); | |
650 | memset(ps->peak_decay_diff_smooth, 0, sizeof(ps->peak_decay_diff_smooth)); | |
651 | memset(ps->delay, 0, sizeof(ps->delay)); | |
652 | memset(ps->ap_delay, 0, sizeof(ps->ap_delay)); | |
653 | } | |
654 | ||
655 | for (k = 0; k < NR_BANDS[is34]; k++) { | |
656 | int i = k_to_i[k]; | |
657 | ps->dsp.add_squares(power[i], s[k], nL - n0); | |
658 | } | |
659 | ||
660 | //Transient detection | |
661 | for (i = 0; i < NR_PAR_BANDS[is34]; i++) { | |
662 | for (n = n0; n < nL; n++) { | |
663 | float decayed_peak = peak_decay_factor * peak_decay_nrg[i]; | |
664 | float denom; | |
665 | peak_decay_nrg[i] = FFMAX(decayed_peak, power[i][n]); | |
666 | power_smooth[i] += a_smooth * (power[i][n] - power_smooth[i]); | |
667 | peak_decay_diff_smooth[i] += a_smooth * (peak_decay_nrg[i] - power[i][n] - peak_decay_diff_smooth[i]); | |
668 | denom = transient_impact * peak_decay_diff_smooth[i]; | |
669 | transient_gain[i][n] = (denom > power_smooth[i]) ? | |
670 | power_smooth[i] / denom : 1.0f; | |
671 | } | |
672 | } | |
673 | ||
674 | //Decorrelation and transient reduction | |
675 | // PS_AP_LINKS - 1 | |
676 | // ----- | |
677 | // | | Q_fract_allpass[k][m]*z^-link_delay[m] - a[m]*g_decay_slope[k] | |
678 | //H[k][z] = z^-2 * phi_fract[k] * | | ---------------------------------------------------------------- | |
679 | // | | 1 - a[m]*g_decay_slope[k]*Q_fract_allpass[k][m]*z^-link_delay[m] | |
680 | // m = 0 | |
681 | //d[k][z] (out) = transient_gain_mapped[k][z] * H[k][z] * s[k][z] | |
682 | for (k = 0; k < NR_ALLPASS_BANDS[is34]; k++) { | |
683 | int b = k_to_i[k]; | |
684 | float g_decay_slope = 1.f - DECAY_SLOPE * (k - DECAY_CUTOFF[is34]); | |
685 | g_decay_slope = av_clipf(g_decay_slope, 0.f, 1.f); | |
686 | memcpy(delay[k], delay[k]+nL, PS_MAX_DELAY*sizeof(delay[k][0])); | |
687 | memcpy(delay[k]+PS_MAX_DELAY, s[k], numQMFSlots*sizeof(delay[k][0])); | |
688 | for (m = 0; m < PS_AP_LINKS; m++) { | |
689 | memcpy(ap_delay[k][m], ap_delay[k][m]+numQMFSlots, 5*sizeof(ap_delay[k][m][0])); | |
690 | } | |
691 | ps->dsp.decorrelate(out[k], delay[k] + PS_MAX_DELAY - 2, ap_delay[k], | |
692 | phi_fract[is34][k], | |
693 | (const float (*)[2]) Q_fract_allpass[is34][k], | |
694 | transient_gain[b], g_decay_slope, nL - n0); | |
695 | } | |
696 | for (; k < SHORT_DELAY_BAND[is34]; k++) { | |
697 | int i = k_to_i[k]; | |
698 | memcpy(delay[k], delay[k]+nL, PS_MAX_DELAY*sizeof(delay[k][0])); | |
699 | memcpy(delay[k]+PS_MAX_DELAY, s[k], numQMFSlots*sizeof(delay[k][0])); | |
700 | //H = delay 14 | |
701 | ps->dsp.mul_pair_single(out[k], delay[k] + PS_MAX_DELAY - 14, | |
702 | transient_gain[i], nL - n0); | |
703 | } | |
704 | for (; k < NR_BANDS[is34]; k++) { | |
705 | int i = k_to_i[k]; | |
706 | memcpy(delay[k], delay[k]+nL, PS_MAX_DELAY*sizeof(delay[k][0])); | |
707 | memcpy(delay[k]+PS_MAX_DELAY, s[k], numQMFSlots*sizeof(delay[k][0])); | |
708 | //H = delay 1 | |
709 | ps->dsp.mul_pair_single(out[k], delay[k] + PS_MAX_DELAY - 1, | |
710 | transient_gain[i], nL - n0); | |
711 | } | |
712 | } | |
713 | ||
714 | static void remap34(int8_t (**p_par_mapped)[PS_MAX_NR_IIDICC], | |
715 | int8_t (*par)[PS_MAX_NR_IIDICC], | |
716 | int num_par, int num_env, int full) | |
717 | { | |
718 | int8_t (*par_mapped)[PS_MAX_NR_IIDICC] = *p_par_mapped; | |
719 | int e; | |
720 | if (num_par == 20 || num_par == 11) { | |
721 | for (e = 0; e < num_env; e++) { | |
722 | map_idx_20_to_34(par_mapped[e], par[e], full); | |
723 | } | |
724 | } else if (num_par == 10 || num_par == 5) { | |
725 | for (e = 0; e < num_env; e++) { | |
726 | map_idx_10_to_34(par_mapped[e], par[e], full); | |
727 | } | |
728 | } else { | |
729 | *p_par_mapped = par; | |
730 | } | |
731 | } | |
732 | ||
733 | static void remap20(int8_t (**p_par_mapped)[PS_MAX_NR_IIDICC], | |
734 | int8_t (*par)[PS_MAX_NR_IIDICC], | |
735 | int num_par, int num_env, int full) | |
736 | { | |
737 | int8_t (*par_mapped)[PS_MAX_NR_IIDICC] = *p_par_mapped; | |
738 | int e; | |
739 | if (num_par == 34 || num_par == 17) { | |
740 | for (e = 0; e < num_env; e++) { | |
741 | map_idx_34_to_20(par_mapped[e], par[e], full); | |
742 | } | |
743 | } else if (num_par == 10 || num_par == 5) { | |
744 | for (e = 0; e < num_env; e++) { | |
745 | map_idx_10_to_20(par_mapped[e], par[e], full); | |
746 | } | |
747 | } else { | |
748 | *p_par_mapped = par; | |
749 | } | |
750 | } | |
751 | ||
752 | static void stereo_processing(PSContext *ps, float (*l)[32][2], float (*r)[32][2], int is34) | |
753 | { | |
754 | int e, b, k; | |
755 | ||
756 | float (*H11)[PS_MAX_NUM_ENV+1][PS_MAX_NR_IIDICC] = ps->H11; | |
757 | float (*H12)[PS_MAX_NUM_ENV+1][PS_MAX_NR_IIDICC] = ps->H12; | |
758 | float (*H21)[PS_MAX_NUM_ENV+1][PS_MAX_NR_IIDICC] = ps->H21; | |
759 | float (*H22)[PS_MAX_NUM_ENV+1][PS_MAX_NR_IIDICC] = ps->H22; | |
760 | int8_t *opd_hist = ps->opd_hist; | |
761 | int8_t *ipd_hist = ps->ipd_hist; | |
762 | int8_t iid_mapped_buf[PS_MAX_NUM_ENV][PS_MAX_NR_IIDICC]; | |
763 | int8_t icc_mapped_buf[PS_MAX_NUM_ENV][PS_MAX_NR_IIDICC]; | |
764 | int8_t ipd_mapped_buf[PS_MAX_NUM_ENV][PS_MAX_NR_IIDICC]; | |
765 | int8_t opd_mapped_buf[PS_MAX_NUM_ENV][PS_MAX_NR_IIDICC]; | |
766 | int8_t (*iid_mapped)[PS_MAX_NR_IIDICC] = iid_mapped_buf; | |
767 | int8_t (*icc_mapped)[PS_MAX_NR_IIDICC] = icc_mapped_buf; | |
768 | int8_t (*ipd_mapped)[PS_MAX_NR_IIDICC] = ipd_mapped_buf; | |
769 | int8_t (*opd_mapped)[PS_MAX_NR_IIDICC] = opd_mapped_buf; | |
770 | const int8_t *k_to_i = is34 ? k_to_i_34 : k_to_i_20; | |
771 | TABLE_CONST float (*H_LUT)[8][4] = (PS_BASELINE || ps->icc_mode < 3) ? HA : HB; | |
772 | ||
773 | //Remapping | |
774 | if (ps->num_env_old) { | |
775 | memcpy(H11[0][0], H11[0][ps->num_env_old], PS_MAX_NR_IIDICC*sizeof(H11[0][0][0])); | |
776 | memcpy(H11[1][0], H11[1][ps->num_env_old], PS_MAX_NR_IIDICC*sizeof(H11[1][0][0])); | |
777 | memcpy(H12[0][0], H12[0][ps->num_env_old], PS_MAX_NR_IIDICC*sizeof(H12[0][0][0])); | |
778 | memcpy(H12[1][0], H12[1][ps->num_env_old], PS_MAX_NR_IIDICC*sizeof(H12[1][0][0])); | |
779 | memcpy(H21[0][0], H21[0][ps->num_env_old], PS_MAX_NR_IIDICC*sizeof(H21[0][0][0])); | |
780 | memcpy(H21[1][0], H21[1][ps->num_env_old], PS_MAX_NR_IIDICC*sizeof(H21[1][0][0])); | |
781 | memcpy(H22[0][0], H22[0][ps->num_env_old], PS_MAX_NR_IIDICC*sizeof(H22[0][0][0])); | |
782 | memcpy(H22[1][0], H22[1][ps->num_env_old], PS_MAX_NR_IIDICC*sizeof(H22[1][0][0])); | |
783 | } | |
784 | ||
785 | if (is34) { | |
786 | remap34(&iid_mapped, ps->iid_par, ps->nr_iid_par, ps->num_env, 1); | |
787 | remap34(&icc_mapped, ps->icc_par, ps->nr_icc_par, ps->num_env, 1); | |
788 | if (ps->enable_ipdopd) { | |
789 | remap34(&ipd_mapped, ps->ipd_par, ps->nr_ipdopd_par, ps->num_env, 0); | |
790 | remap34(&opd_mapped, ps->opd_par, ps->nr_ipdopd_par, ps->num_env, 0); | |
791 | } | |
792 | if (!ps->is34bands_old) { | |
793 | map_val_20_to_34(H11[0][0]); | |
794 | map_val_20_to_34(H11[1][0]); | |
795 | map_val_20_to_34(H12[0][0]); | |
796 | map_val_20_to_34(H12[1][0]); | |
797 | map_val_20_to_34(H21[0][0]); | |
798 | map_val_20_to_34(H21[1][0]); | |
799 | map_val_20_to_34(H22[0][0]); | |
800 | map_val_20_to_34(H22[1][0]); | |
801 | ipdopd_reset(ipd_hist, opd_hist); | |
802 | } | |
803 | } else { | |
804 | remap20(&iid_mapped, ps->iid_par, ps->nr_iid_par, ps->num_env, 1); | |
805 | remap20(&icc_mapped, ps->icc_par, ps->nr_icc_par, ps->num_env, 1); | |
806 | if (ps->enable_ipdopd) { | |
807 | remap20(&ipd_mapped, ps->ipd_par, ps->nr_ipdopd_par, ps->num_env, 0); | |
808 | remap20(&opd_mapped, ps->opd_par, ps->nr_ipdopd_par, ps->num_env, 0); | |
809 | } | |
810 | if (ps->is34bands_old) { | |
811 | map_val_34_to_20(H11[0][0]); | |
812 | map_val_34_to_20(H11[1][0]); | |
813 | map_val_34_to_20(H12[0][0]); | |
814 | map_val_34_to_20(H12[1][0]); | |
815 | map_val_34_to_20(H21[0][0]); | |
816 | map_val_34_to_20(H21[1][0]); | |
817 | map_val_34_to_20(H22[0][0]); | |
818 | map_val_34_to_20(H22[1][0]); | |
819 | ipdopd_reset(ipd_hist, opd_hist); | |
820 | } | |
821 | } | |
822 | ||
823 | //Mixing | |
824 | for (e = 0; e < ps->num_env; e++) { | |
825 | for (b = 0; b < NR_PAR_BANDS[is34]; b++) { | |
826 | float h11, h12, h21, h22; | |
827 | h11 = H_LUT[iid_mapped[e][b] + 7 + 23 * ps->iid_quant][icc_mapped[e][b]][0]; | |
828 | h12 = H_LUT[iid_mapped[e][b] + 7 + 23 * ps->iid_quant][icc_mapped[e][b]][1]; | |
829 | h21 = H_LUT[iid_mapped[e][b] + 7 + 23 * ps->iid_quant][icc_mapped[e][b]][2]; | |
830 | h22 = H_LUT[iid_mapped[e][b] + 7 + 23 * ps->iid_quant][icc_mapped[e][b]][3]; | |
831 | ||
832 | if (!PS_BASELINE && ps->enable_ipdopd && b < NR_IPDOPD_BANDS[is34]) { | |
833 | //The spec say says to only run this smoother when enable_ipdopd | |
834 | //is set but the reference decoder appears to run it constantly | |
835 | float h11i, h12i, h21i, h22i; | |
836 | float ipd_adj_re, ipd_adj_im; | |
837 | int opd_idx = opd_hist[b] * 8 + opd_mapped[e][b]; | |
838 | int ipd_idx = ipd_hist[b] * 8 + ipd_mapped[e][b]; | |
839 | float opd_re = pd_re_smooth[opd_idx]; | |
840 | float opd_im = pd_im_smooth[opd_idx]; | |
841 | float ipd_re = pd_re_smooth[ipd_idx]; | |
842 | float ipd_im = pd_im_smooth[ipd_idx]; | |
843 | opd_hist[b] = opd_idx & 0x3F; | |
844 | ipd_hist[b] = ipd_idx & 0x3F; | |
845 | ||
846 | ipd_adj_re = opd_re*ipd_re + opd_im*ipd_im; | |
847 | ipd_adj_im = opd_im*ipd_re - opd_re*ipd_im; | |
848 | h11i = h11 * opd_im; | |
849 | h11 = h11 * opd_re; | |
850 | h12i = h12 * ipd_adj_im; | |
851 | h12 = h12 * ipd_adj_re; | |
852 | h21i = h21 * opd_im; | |
853 | h21 = h21 * opd_re; | |
854 | h22i = h22 * ipd_adj_im; | |
855 | h22 = h22 * ipd_adj_re; | |
856 | H11[1][e+1][b] = h11i; | |
857 | H12[1][e+1][b] = h12i; | |
858 | H21[1][e+1][b] = h21i; | |
859 | H22[1][e+1][b] = h22i; | |
860 | } | |
861 | H11[0][e+1][b] = h11; | |
862 | H12[0][e+1][b] = h12; | |
863 | H21[0][e+1][b] = h21; | |
864 | H22[0][e+1][b] = h22; | |
865 | } | |
866 | for (k = 0; k < NR_BANDS[is34]; k++) { | |
867 | float h[2][4]; | |
868 | float h_step[2][4]; | |
869 | int start = ps->border_position[e]; | |
870 | int stop = ps->border_position[e+1]; | |
871 | float width = 1.f / (stop - start); | |
872 | b = k_to_i[k]; | |
873 | h[0][0] = H11[0][e][b]; | |
874 | h[0][1] = H12[0][e][b]; | |
875 | h[0][2] = H21[0][e][b]; | |
876 | h[0][3] = H22[0][e][b]; | |
877 | if (!PS_BASELINE && ps->enable_ipdopd) { | |
878 | //Is this necessary? ps_04_new seems unchanged | |
879 | if ((is34 && k <= 13 && k >= 9) || (!is34 && k <= 1)) { | |
880 | h[1][0] = -H11[1][e][b]; | |
881 | h[1][1] = -H12[1][e][b]; | |
882 | h[1][2] = -H21[1][e][b]; | |
883 | h[1][3] = -H22[1][e][b]; | |
884 | } else { | |
885 | h[1][0] = H11[1][e][b]; | |
886 | h[1][1] = H12[1][e][b]; | |
887 | h[1][2] = H21[1][e][b]; | |
888 | h[1][3] = H22[1][e][b]; | |
889 | } | |
890 | } | |
891 | //Interpolation | |
892 | h_step[0][0] = (H11[0][e+1][b] - h[0][0]) * width; | |
893 | h_step[0][1] = (H12[0][e+1][b] - h[0][1]) * width; | |
894 | h_step[0][2] = (H21[0][e+1][b] - h[0][2]) * width; | |
895 | h_step[0][3] = (H22[0][e+1][b] - h[0][3]) * width; | |
896 | if (!PS_BASELINE && ps->enable_ipdopd) { | |
897 | h_step[1][0] = (H11[1][e+1][b] - h[1][0]) * width; | |
898 | h_step[1][1] = (H12[1][e+1][b] - h[1][1]) * width; | |
899 | h_step[1][2] = (H21[1][e+1][b] - h[1][2]) * width; | |
900 | h_step[1][3] = (H22[1][e+1][b] - h[1][3]) * width; | |
901 | } | |
902 | ps->dsp.stereo_interpolate[!PS_BASELINE && ps->enable_ipdopd]( | |
903 | l[k] + start + 1, r[k] + start + 1, | |
904 | h, h_step, stop - start); | |
905 | } | |
906 | } | |
907 | } | |
908 | ||
909 | int ff_ps_apply(AVCodecContext *avctx, PSContext *ps, float L[2][38][64], float R[2][38][64], int top) | |
910 | { | |
911 | LOCAL_ALIGNED_16(float, Lbuf, [91], [32][2]); | |
912 | LOCAL_ALIGNED_16(float, Rbuf, [91], [32][2]); | |
913 | const int len = 32; | |
914 | int is34 = ps->is34bands; | |
915 | ||
916 | top += NR_BANDS[is34] - 64; | |
917 | memset(ps->delay+top, 0, (NR_BANDS[is34] - top)*sizeof(ps->delay[0])); | |
918 | if (top < NR_ALLPASS_BANDS[is34]) | |
919 | memset(ps->ap_delay + top, 0, (NR_ALLPASS_BANDS[is34] - top)*sizeof(ps->ap_delay[0])); | |
920 | ||
921 | hybrid_analysis(&ps->dsp, Lbuf, ps->in_buf, L, is34, len); | |
922 | decorrelation(ps, Rbuf, (const float (*)[32][2]) Lbuf, is34); | |
923 | stereo_processing(ps, Lbuf, Rbuf, is34); | |
924 | hybrid_synthesis(&ps->dsp, L, Lbuf, is34, len); | |
925 | hybrid_synthesis(&ps->dsp, R, Rbuf, is34, len); | |
926 | ||
927 | return 0; | |
928 | } | |
929 | ||
930 | #define PS_INIT_VLC_STATIC(num, size) \ | |
931 | INIT_VLC_STATIC(&vlc_ps[num], 9, ps_tmp[num].table_size / ps_tmp[num].elem_size, \ | |
932 | ps_tmp[num].ps_bits, 1, 1, \ | |
933 | ps_tmp[num].ps_codes, ps_tmp[num].elem_size, ps_tmp[num].elem_size, \ | |
934 | size); | |
935 | ||
936 | #define PS_VLC_ROW(name) \ | |
937 | { name ## _codes, name ## _bits, sizeof(name ## _codes), sizeof(name ## _codes[0]) } | |
938 | ||
939 | av_cold void ff_ps_init(void) { | |
940 | // Syntax initialization | |
941 | static const struct { | |
942 | const void *ps_codes, *ps_bits; | |
943 | const unsigned int table_size, elem_size; | |
944 | } ps_tmp[] = { | |
945 | PS_VLC_ROW(huff_iid_df1), | |
946 | PS_VLC_ROW(huff_iid_dt1), | |
947 | PS_VLC_ROW(huff_iid_df0), | |
948 | PS_VLC_ROW(huff_iid_dt0), | |
949 | PS_VLC_ROW(huff_icc_df), | |
950 | PS_VLC_ROW(huff_icc_dt), | |
951 | PS_VLC_ROW(huff_ipd_df), | |
952 | PS_VLC_ROW(huff_ipd_dt), | |
953 | PS_VLC_ROW(huff_opd_df), | |
954 | PS_VLC_ROW(huff_opd_dt), | |
955 | }; | |
956 | ||
957 | PS_INIT_VLC_STATIC(0, 1544); | |
958 | PS_INIT_VLC_STATIC(1, 832); | |
959 | PS_INIT_VLC_STATIC(2, 1024); | |
960 | PS_INIT_VLC_STATIC(3, 1036); | |
961 | PS_INIT_VLC_STATIC(4, 544); | |
962 | PS_INIT_VLC_STATIC(5, 544); | |
963 | PS_INIT_VLC_STATIC(6, 512); | |
964 | PS_INIT_VLC_STATIC(7, 512); | |
965 | PS_INIT_VLC_STATIC(8, 512); | |
966 | PS_INIT_VLC_STATIC(9, 512); | |
967 | ||
968 | ps_tableinit(); | |
969 | } | |
970 | ||
971 | av_cold void ff_ps_ctx_init(PSContext *ps) | |
972 | { | |
973 | ff_psdsp_init(&ps->dsp); | |
974 | } |