44 #define EXPMAX ((19+EXPVLCBITS-1)/EXPVLCBITS)
46 #define HGAINVLCBITS 9
47 #define HGAINMAX ((13+HGAINVLCBITS-1)/HGAINVLCBITS)
143 t.v = ((u.v <<
LSP_POW_BITS) & ((1 << 23) - 1)) | (127 << 23);
154 wdel = M_PI / frame_len;
155 for(i=0;i<frame_len;i++)
182 float *out,
float *val_max_ptr,
186 float p, q, w, v, val_max;
205 *val_max_ptr = val_max;
217 if (i == 0 || i >= 8)
230 1.7782794100389e-04, 2.0535250264571e-04,
231 2.3713737056617e-04, 2.7384196342644e-04,
232 3.1622776601684e-04, 3.6517412725484e-04,
233 4.2169650342858e-04, 4.8696752516586e-04,
234 5.6234132519035e-04, 6.4938163157621e-04,
235 7.4989420933246e-04, 8.6596432336006e-04,
236 1.0000000000000e-03, 1.1547819846895e-03,
237 1.3335214321633e-03, 1.5399265260595e-03,
238 1.7782794100389e-03, 2.0535250264571e-03,
239 2.3713737056617e-03, 2.7384196342644e-03,
240 3.1622776601684e-03, 3.6517412725484e-03,
241 4.2169650342858e-03, 4.8696752516586e-03,
242 5.6234132519035e-03, 6.4938163157621e-03,
243 7.4989420933246e-03, 8.6596432336006e-03,
244 1.0000000000000e-02, 1.1547819846895e-02,
245 1.3335214321633e-02, 1.5399265260595e-02,
246 1.7782794100389e-02, 2.0535250264571e-02,
247 2.3713737056617e-02, 2.7384196342644e-02,
248 3.1622776601684e-02, 3.6517412725484e-02,
249 4.2169650342858e-02, 4.8696752516586e-02,
250 5.6234132519035e-02, 6.4938163157621e-02,
251 7.4989420933246e-02, 8.6596432336007e-02,
252 1.0000000000000e-01, 1.1547819846895e-01,
253 1.3335214321633e-01, 1.5399265260595e-01,
254 1.7782794100389e-01, 2.0535250264571e-01,
255 2.3713737056617e-01, 2.7384196342644e-01,
256 3.1622776601684e-01, 3.6517412725484e-01,
257 4.2169650342858e-01, 4.8696752516586e-01,
258 5.6234132519035e-01, 6.4938163157621e-01,
259 7.4989420933246e-01, 8.6596432336007e-01,
260 1.0000000000000e+00, 1.1547819846895e+00,
261 1.3335214321633e+00, 1.5399265260595e+00,
262 1.7782794100389e+00, 2.0535250264571e+00,
263 2.3713737056617e+00, 2.7384196342644e+00,
264 3.1622776601684e+00, 3.6517412725484e+00,
265 4.2169650342858e+00, 4.8696752516586e+00,
266 5.6234132519035e+00, 6.4938163157621e+00,
267 7.4989420933246e+00, 8.6596432336007e+00,
268 1.0000000000000e+01, 1.1547819846895e+01,
269 1.3335214321633e+01, 1.5399265260595e+01,
270 1.7782794100389e+01, 2.0535250264571e+01,
271 2.3713737056617e+01, 2.7384196342644e+01,
272 3.1622776601684e+01, 3.6517412725484e+01,
273 4.2169650342858e+01, 4.8696752516586e+01,
274 5.6234132519035e+01, 6.4938163157621e+01,
275 7.4989420933246e+01, 8.6596432336007e+01,
276 1.0000000000000e+02, 1.1547819846895e+02,
277 1.3335214321633e+02, 1.5399265260595e+02,
278 1.7782794100389e+02, 2.0535250264571e+02,
279 2.3713737056617e+02, 2.7384196342644e+02,
280 3.1622776601684e+02, 3.6517412725484e+02,
281 4.2169650342858e+02, 4.8696752516586e+02,
282 5.6234132519035e+02, 6.4938163157621e+02,
283 7.4989420933246e+02, 8.6596432336007e+02,
284 1.0000000000000e+03, 1.1547819846895e+03,
285 1.3335214321633e+03, 1.5399265260595e+03,
286 1.7782794100389e+03, 2.0535250264571e+03,
287 2.3713737056617e+03, 2.7384196342644e+03,
288 3.1622776601684e+03, 3.6517412725484e+03,
289 4.2169650342858e+03, 4.8696752516586e+03,
290 5.6234132519035e+03, 6.4938163157621e+03,
291 7.4989420933246e+03, 8.6596432336007e+03,
292 1.0000000000000e+04, 1.1547819846895e+04,
293 1.3335214321633e+04, 1.5399265260595e+04,
294 1.7782794100389e+04, 2.0535250264571e+04,
295 2.3713737056617e+04, 2.7384196342644e+04,
296 3.1622776601684e+04, 3.6517412725484e+04,
297 4.2169650342858e+04, 4.8696752516586e+04,
298 5.6234132519035e+04, 6.4938163157621e+04,
299 7.4989420933246e+04, 8.6596432336007e+04,
300 1.0000000000000e+05, 1.1547819846895e+05,
301 1.3335214321633e+05, 1.5399265260595e+05,
302 1.7782794100389e+05, 2.0535250264571e+05,
303 2.3713737056617e+05, 2.7384196342644e+05,
304 3.1622776601684e+05, 3.6517412725484e+05,
305 4.2169650342858e+05, 4.8696752516586e+05,
306 5.6234132519035e+05, 6.4938163157621e+05,
307 7.4989420933246e+05, 8.6596432336007e+05,
315 int last_exp, n, code;
318 uint32_t *q, *q_end, iv;
319 const float *ptab = pow_tab + 60;
320 const uint32_t *iptab = (
const uint32_t*)ptab;
329 iv = iptab[last_exp];
337 }
while ((n -= 4) > 0);
348 last_exp += code - 60;
355 iv = iptab[last_exp];
364 }
while ((n -= 4) > 0);
380 int block_len, bsize, n;
398 memcpy(out+n+block_len, in+n+block_len, n*
sizeof(
float));
416 memcpy(out, in, n*
sizeof(
float));
420 memset(out+n+block_len, 0, n*
sizeof(
float));
431 int n, v,
a, ch, bsize;
432 int coef_nb_bits, total_gain;
539 val = (int)0x80000000;
542 if (val == (
int)0x80000000) {
587 0, ptr, 0, nb_coefs[ch],
598 mdct_norm = 1.0 / (float)n4;
600 mdct_norm *= sqrt(n4);
608 float *coefs, *exponents,
mult, mult1,
noise;
609 int i, j, n, n1, last_high_band, esize;
615 mult = pow(10, total_gain * 0.05) / s->
max_exponent[ch];
617 coefs = s->
coefs[ch];
623 exponents[i<<bsize>>esize] * mult1;
639 for(i = 0;i < n; i++) {
640 v = exponents[i<<bsize>>esize];
643 exp_power[j] = e2 / n;
645 tprintf(s->
avctx,
"%d: power=%f (%d)\n", j, exp_power[j], n);
647 exponents += n<<bsize>>esize;
662 mult1 = sqrt(exp_power[j] / exp_power[last_high_band]);
667 for(i = 0;i < n; i++) {
671 exponents[i<<bsize>>esize] * mult1;
673 exponents += n<<bsize>>esize;
676 for(i = 0;i < n; i++) {
679 *coefs++ = ((*coefs1++) + noise) *
680 exponents[i<<bsize>>esize] *
mult;
682 exponents += n<<bsize>>esize;
688 mult1 = mult * exponents[((-1<<bsize))>>esize];
689 for(i = 0; i < n; i++) {
698 for(i = 0;i < n; i++) {
699 *coefs++ = coefs1[i] * exponents[i<<bsize>>esize] *
mult;
702 for(i = 0;i < n; i++)
779 memcpy(samples[ch] + samples_offset, s->
frame_out[ch],
786 dump_floats(s,
"samples", 6, samples[ch] + samples_offset, s->
frame_len);
794 int *got_frame_ptr,
AVPacket *avpkt)
797 int buf_size = avpkt->
size;
799 int nb_frames, bit_offset, i, pos,
len, ret;
804 tprintf(avctx,
"***decode_superframe:\n");
810 if (buf_size < avctx->block_align) {
812 "Input packet size too small (%d < %d)\n",
841 "Invalid last frame bit offset %d > buf size %d (%d)\n",
885 for(i=0;i<nb_frames;i++) {
895 len = buf_size - pos;
909 av_dlog(s->
avctx,
"%d %d %d %d outbytes:%td eaten:%d\n",
911 (int8_t *)samples - (int8_t *)data, avctx->
block_align);