28 #define BITSTREAM_READER_LE
40 #define V_MAX_VLCS (1 << 16)
41 #define V_MAX_PARTITIONS (1 << 20)
80 uint8_t partition_class[32];
81 uint8_t class_dimensions[16];
82 uint8_t class_subclasses[16];
83 uint8_t class_masterbook[16];
84 int16_t subclass_books[16][8];
111 uint8_t submap_floor[16];
112 uint8_t submap_residue[16];
160 (13.1f * atan(0.00074f * (x)) + 2.24f * atan(1.85e-8f * (x) * (x)) + 1e-4f * (x))
162 static const char idx_err_str[] =
"Index value %d out of range (0 - %d) for %s at %s:%i\n";
163 #define VALIDATE_INDEX(idx, limit) \
165 av_log(vc->avccontext, AV_LOG_ERROR,\
167 (int)(idx), (int)(limit - 1), #idx, __FILE__, __LINE__);\
168 return AVERROR_INVALIDDATA;\
170 #define GET_VALIDATED_INDEX(idx, bits, limit) \
172 idx = get_bits(gb, bits);\
173 VALIDATE_INDEX(idx, limit)\
178 double mant = val & 0x1fffff;
179 long exp = (val & 0x7fe00000L) >> 21;
180 if (val & 0x80000000)
182 return ldexp(mant, exp - 20 - 768);
237 uint8_t *tmp_vlc_bits;
238 uint32_t *tmp_vlc_codes;
240 uint16_t *codebook_multiplicands;
254 unsigned ordered,
t, entries, used_entries = 0;
260 " %u. Codebook setup data corrupt.\n", cb);
268 " %u. Codebook's dimension is invalid (%d).\n",
276 " %u. Codebook has too many entries (%u).\n",
284 av_dlog(
NULL,
" codebook_dimensions %d, codebook_entries %u\n",
297 for (ce = 0; ce < entries; ++ce) {
300 tmp_vlc_bits[ce] =
get_bits(gb, 5) + 1;
303 tmp_vlc_bits[ce] = 0;
308 used_entries = entries;
309 for (ce = 0; ce < entries; ++ce)
310 tmp_vlc_bits[ce] =
get_bits(gb, 5) + 1;
313 unsigned current_entry = 0;
314 unsigned current_length =
get_bits(gb, 5) + 1;
316 av_dlog(
NULL,
" ordered, current length: %u\n", current_length);
318 used_entries = entries;
319 for (; current_entry < used_entries && current_length <= 32; ++current_length) {
328 for (i = current_entry; i < number+current_entry; ++i)
329 if (i < used_entries)
330 tmp_vlc_bits[i] = current_length;
332 current_entry+=number;
334 if (current_entry>used_entries) {
354 unsigned codebook_value_bits =
get_bits(gb, 4) + 1;
355 unsigned codebook_sequence_p =
get_bits1(gb);
357 av_dlog(
NULL,
" We expect %d numbers for building the codevectors. \n",
358 codebook_lookup_values);
360 codebook_delta_value, codebook_minimum_value);
362 for (i = 0; i < codebook_lookup_values; ++i) {
363 codebook_multiplicands[i] =
get_bits(gb, codebook_value_bits);
365 av_dlog(
NULL,
" multiplicands*delta+minmum : %e \n",
366 (
float)codebook_multiplicands[i] * codebook_delta_value + codebook_minimum_value);
367 av_dlog(
NULL,
" multiplicand %u\n", codebook_multiplicands[i]);
375 for (j = 0, i = 0; i < entries; ++i) {
378 if (tmp_vlc_bits[i]) {
380 unsigned lookup_offset = i;
384 for (k = 0; k <
dim; ++k) {
385 unsigned multiplicand_offset = lookup_offset % codebook_lookup_values;
386 codebook_setup->
codevectors[j * dim + k] = codebook_multiplicands[multiplicand_offset] * codebook_delta_value + codebook_minimum_value + last;
387 if (codebook_sequence_p)
389 lookup_offset/=codebook_lookup_values;
391 tmp_vlc_bits[j] = tmp_vlc_bits[i];
394 for (k = 0; k <
dim; ++k)
402 if (j != used_entries) {
407 entries = used_entries;
421 for (t = 0; t < entries; ++
t)
422 if (tmp_vlc_bits[t] >= codebook_setup->
maxdepth)
423 codebook_setup->
maxdepth = tmp_vlc_bits[
t];
433 entries, tmp_vlc_bits,
sizeof(*tmp_vlc_bits),
434 sizeof(*tmp_vlc_bits), tmp_vlc_codes,
435 sizeof(*tmp_vlc_codes),
sizeof(*tmp_vlc_codes),
444 av_free(codebook_multiplicands);
451 av_free(codebook_multiplicands);
460 unsigned i, vorbis_time_count =
get_bits(gb, 6) + 1;
462 for (i = 0; i < vorbis_time_count; ++i) {
463 unsigned vorbis_tdtransform =
get_bits(gb, 16);
465 av_dlog(
NULL,
" Vorbis time domain transform %u: %u\n",
466 vorbis_time_count, vorbis_tdtransform);
468 if (vorbis_tdtransform) {
479 vorbis_floor_data *vfu,
float *vec);
482 vorbis_floor_data *vfu,
float *vec);
500 int maximum_class = -1;
501 unsigned rangebits, rangemax, floor1_values = 2;
515 av_dlog(
NULL,
" %d. floor %d partition class %d \n",
520 av_dlog(
NULL,
" maximum class %d \n", maximum_class);
522 for (j = 0; j <= maximum_class; ++j) {
526 av_dlog(
NULL,
" %d floor %d class dim: %d subclasses %d \n", i, j,
557 rangemax = (1 << rangebits);
560 "Floor value is too large for blocksize: %u (%"PRIu32
")\n",
571 av_dlog(
NULL,
" %u. floor1 Y coord. %d\n", floor1_values,
579 unsigned max_codebook_dim = 0;
591 "Floor 0 amplitude bits is 0.\n");
667 unsigned high_bits, low_bits;
677 if (res_setup->
begin>res_setup->
end ||
681 "partition out of bounds: type, begin, end, size, blocksize: %"PRIu16
", %"PRIu32
", %"PRIu32
", %u, %"PRIu32
"\n",
698 av_dlog(
NULL,
" begin %d end %d part.size %d classif.s %d classbook %d \n",
707 cascade[j] = (high_bits << 3) + low_bits;
714 for (k = 0; k < 8; ++k) {
715 if (cascade[j]&(1 << k)) {
718 av_dlog(
NULL,
" %u class cascade depth %u book: %d\n",
719 j, k, res_setup->
books[j][k]);
724 res_setup->
books[j][k] = -1;
762 sizeof(*mapping_setup->
angle));
779 if (mapping_setup->
submaps>1) {
781 sizeof(*mapping_setup->
mux));
786 for (j = 0; j < mapping_setup->
submaps; ++j) {
791 av_dlog(
NULL,
" %u mapping %u submap : floor %d, residue %d\n", i, j,
809 for (blockflag = 0; blockflag < 2; ++blockflag) {
811 floors[floor_number].
data.
t0.
map[blockflag] =
814 map = floors[floor_number].
data.
t0.
map[blockflag];
815 vf = &floors[floor_number].
data.
t0;
817 for (idx = 0; idx < n; ++idx) {
818 map[idx] = floor(
BARK((vf->rate * idx) / (2.0f * n)) *
819 (vf->bark_map_size /
BARK(vf->rate / 2.0f)));
820 if (vf->bark_map_size-1 < map[idx])
821 map[idx] = vf->bark_map_size - 1;
824 vf->map_size[blockflag] = n;
827 for (idx = 0; idx <= n; ++idx) {
828 av_dlog(
NULL,
"floor0 map: map at pos %d is %d\n", idx, map[idx]);
850 av_dlog(
NULL,
" %u mode: blockflag %d, windowtype %d, transformtype %d, mapping %d\n",
935 if (bl0 > 13 || bl0 < 6 || bl1 > 13 || bl1 < 6 || bl1 < bl0) {
955 av_dlog(
NULL,
" vorbis version %d \n audio_channels %d \n audio_samplerate %d \n bitrate_max %d \n bitrate_nom %d \n bitrate_min %d \n blk_0 %d blk_1 %d \n ",
973 uint8_t *headers = avccontext->
extradata;
975 uint8_t *header_start[3];
1004 if (hdr_type != 1) {
1016 if (hdr_type != 5) {
1047 vorbis_floor_data *vfu,
float *vec)
1050 float *lsp = vf->lsp;
1051 unsigned amplitude, book_idx;
1054 amplitude =
get_bits(&vc->
gb, vf->amplitude_bits);
1055 if (amplitude > 0) {
1057 unsigned idx, lsp_len = 0;
1061 if (book_idx >= vf->num_books) {
1063 "floor0 dec: booknumber too high!\n");
1066 av_dlog(
NULL,
"floor0 dec: booknumber: %u\n", book_idx);
1067 codebook = vc->
codebooks[vf->book_list[book_idx]];
1072 while (lsp_len<vf->order) {
1081 av_dlog(
NULL,
"floor0 dec: vector offset: %d\n", vec_off);
1083 for (idx = 0; idx < codebook.
dimensions; ++idx)
1084 lsp[lsp_len+idx] = codebook.
codevectors[vec_off+idx] + last;
1085 last = lsp[lsp_len+idx-1];
1092 for (idx = 0; idx < lsp_len; ++idx)
1093 av_dlog(
NULL,
"floor0 dec: coeff at %d is %f\n", idx, lsp[idx]);
1099 int order = vf->order;
1100 float wstep =
M_PI / vf->bark_map_size;
1102 for (i = 0; i < order; i++)
1103 lsp[i] = 2.0
f * cos(lsp[i]);
1105 av_dlog(
NULL,
"floor0 synth: map_size = %"PRIu32
"; m = %d; wstep = %f\n",
1106 vf->map_size[blockflag], order, wstep);
1109 while (i < vf->map_size[blockflag]) {
1110 int j, iter_cond = vf->map[blockflag][i];
1113 float two_cos_w = 2.0f * cos(wstep * iter_cond);
1116 for (j = 0; j + 1 < order; j += 2) {
1117 q *= lsp[j] - two_cos_w;
1118 p *= lsp[j + 1] - two_cos_w;
1121 p *= p * (2.0f - two_cos_w);
1122 q *= q * (2.0f + two_cos_w);
1124 q *= two_cos_w-lsp[j];
1127 p *= p * (4.f - two_cos_w * two_cos_w);
1132 q = exp((((amplitude*vf->amplitude_offset) /
1133 (((1 << vf->amplitude_bits) - 1) * sqrt(p + q)))
1134 - vf->amplitude_offset) * .11512925f);
1139 }
while (vf->map[blockflag][i] == iter_cond);
1153 vorbis_floor_data *vfu,
float *vec)
1157 uint16_t range_v[4] = { 256, 128, 86, 64 };
1158 unsigned range = range_v[vf->multiplier - 1];
1159 uint16_t floor1_Y[258];
1160 uint16_t floor1_Y_final[258];
1161 int floor1_flag[258];
1162 unsigned class, cdim, cbits, csub, cval, offset, i, j;
1163 int book, adx, ady, dy,
off, predicted, err;
1174 av_dlog(
NULL,
"floor 0 Y %d floor 1 Y %d \n", floor1_Y[0], floor1_Y[1]);
1177 for (i = 0; i < vf->partitions; ++i) {
1178 class = vf->partition_class[i];
1179 cdim = vf->class_dimensions[
class];
1180 cbits = vf->class_subclasses[
class];
1181 csub = (1 << cbits) - 1;
1190 for (j = 0; j < cdim; ++j) {
1191 book = vf->subclass_books[
class][cval & csub];
1193 av_dlog(
NULL,
"book %d Cbits %u cval %u bits:%d\n",
1196 cval = cval >> cbits;
1201 floor1_Y[offset+j] = 0;
1205 vf->list[offset+j].x, floor1_Y[offset+j]);
1214 floor1_Y_final[0] = floor1_Y[0];
1215 floor1_Y_final[1] = floor1_Y[1];
1217 for (i = 2; i < vf->x_list_dim; ++i) {
1218 unsigned val, highroom, lowroom, room, high_neigh_offs, low_neigh_offs;
1220 low_neigh_offs = vf->list[i].low;
1221 high_neigh_offs = vf->list[i].high;
1222 dy = floor1_Y_final[high_neigh_offs] - floor1_Y_final[low_neigh_offs];
1223 adx = vf->list[high_neigh_offs].x - vf->list[low_neigh_offs].x;
1225 err = ady * (vf->list[i].x - vf->list[low_neigh_offs].x);
1228 predicted = floor1_Y_final[low_neigh_offs] -
off;
1230 predicted = floor1_Y_final[low_neigh_offs] +
off;
1234 highroom = range-predicted;
1235 lowroom = predicted;
1236 if (highroom < lowroom) {
1237 room = highroom * 2;
1242 floor1_flag[low_neigh_offs] = 1;
1243 floor1_flag[high_neigh_offs] = 1;
1246 if (highroom > lowroom) {
1247 floor1_Y_final[i] = av_clip_uint16(val - lowroom + predicted);
1249 floor1_Y_final[i] = av_clip_uint16(predicted - val + highroom - 1);
1253 floor1_Y_final[i] = av_clip_uint16(predicted - (val + 1) / 2);
1255 floor1_Y_final[i] = av_clip_uint16(predicted + val / 2);
1260 floor1_Y_final[i] = av_clip_uint16(predicted);
1263 av_dlog(
NULL,
" Decoded floor(%d) = %u / val %u\n",
1264 vf->list[i].x, floor1_Y_final[i], val);
1281 uint8_t *do_not_decode,
1291 unsigned pass, ch_used, i, j, k, l;
1292 unsigned max_output = (ch - 1) * vlen;
1295 for (j = 1; j < ch; ++j)
1296 do_not_decode[0] &= do_not_decode[j];
1297 if (do_not_decode[0])
1300 max_output += vr->
end / ch;
1303 max_output += vr->
end;
1306 if (max_output > ch_left * vlen) {
1311 av_dlog(
NULL,
" residue type 0/1/2 decode begin, ch: %d cpc %d \n", ch, c_p_c);
1314 uint16_t voffset, partition_count, j_times_ptns_to_read;
1316 voffset = vr->
begin;
1317 for (partition_count = 0; partition_count < ptns_to_read;) {
1320 for (j_times_ptns_to_read = 0, j = 0; j < ch_used; ++j) {
1321 if (!do_not_decode[j]) {
1328 for (i = 0; i < c_p_c; ++i) {
1331 temp2 = (((uint64_t)temp) * inverse_class) >> 32;
1332 if (partition_count + c_p_c - 1 - i < ptns_to_read)
1333 classifs[j_times_ptns_to_read + partition_count + c_p_c - 1 - i] = temp - temp2 * vr->
classifications;
1337 j_times_ptns_to_read += ptns_to_read;
1340 for (i = 0; (i < c_p_c) && (partition_count < ptns_to_read); ++i) {
1341 for (j_times_ptns_to_read = 0, j = 0; j < ch_used; ++j) {
1344 if (!do_not_decode[j]) {
1345 unsigned vqclass = classifs[j_times_ptns_to_read + partition_count];
1357 voffs = voffset+j*vlen;
1358 for (k = 0; k <
step; ++k) {
1360 for (l = 0; l <
dim; ++l)
1361 vec[voffs + k + l * step] += codebook.
codevectors[coffs + l];
1363 }
else if (vr_type == 1) {
1364 voffs = voffset + j * vlen;
1365 for (k = 0; k <
step; ++k) {
1367 for (l = 0; l <
dim; ++l, ++voffs) {
1370 av_dlog(
NULL,
" pass %d offs: %d curr: %f change: %f cv offs.: %d \n",
1371 pass, voffs, vec[voffs], codebook.
codevectors[coffs+l], coffs);
1374 }
else if (vr_type == 2 && ch == 2 && (voffset & 1) == 0 && (dim & 1) == 0) {
1375 voffs = voffset >> 1;
1378 for (k = 0; k <
step; ++k) {
1381 vec[voffs + k + vlen] += codebook.
codevectors[coffs + 1];
1383 }
else if (dim == 4) {
1384 for (k = 0; k <
step; ++k, voffs += 2) {
1387 vec[voffs + 1 ] += codebook.
codevectors[coffs + 2];
1388 vec[voffs + vlen ] += codebook.
codevectors[coffs + 1];
1389 vec[voffs + vlen + 1] += codebook.
codevectors[coffs + 3];
1392 for (k = 0; k <
step; ++k) {
1394 for (l = 0; l <
dim; l += 2, voffs++) {
1396 vec[voffs + vlen] += codebook.
codevectors[coffs + l + 1];
1398 av_dlog(
NULL,
" pass %d offs: %d curr: %f change: %f cv offs.: %d+%d \n",
1399 pass, voffset / ch + (voffs % ch) * vlen,
1400 vec[voffset / ch + (voffs % ch) * vlen],
1405 }
else if (vr_type == 2) {
1408 for (k = 0; k <
step; ++k) {
1410 for (l = 0; l <
dim; ++l, ++voffs) {
1411 vec[voffs / ch + (voffs % ch) * vlen] += codebook.
codevectors[coffs + l];
1413 av_dlog(
NULL,
" pass %d offs: %d curr: %f change: %f cv offs.: %d+%d \n",
1414 pass, voffset / ch + (voffs % ch) * vlen,
1415 vec[voffset / ch + (voffs % ch) * vlen],
1422 j_times_ptns_to_read += ptns_to_read;
1434 uint8_t *do_not_decode,
1435 float *vec,
unsigned vlen,
1440 else if (vr->
type == 1)
1442 else if (vr->
type == 0)
1453 for (i = 0; i < blocksize; i++) {
1456 ang[i] = mag[i] - ang[i];
1458 float temp = ang[i];
1466 float temp = ang[i];
1481 unsigned mode_number, blockflag, blocksize;
1483 uint8_t no_residue[255];
1484 uint8_t do_not_decode[255];
1488 uint8_t res_chan[255];
1489 unsigned res_num = 0;
1507 av_dlog(
NULL,
" Mode number: %u , mapping: %d , blocktype %d\n", mode_number,
1512 vlen = blocksize / 2;
1516 memset(ch_res_ptr, 0,
sizeof(
float) * vc->
audio_channels * vlen);
1517 memset(ch_floor_ptr, 0,
sizeof(
float) * vc->
audio_channels * vlen);
1530 ret = floor->
decode(vc, &floor->
data, ch_floor_ptr);
1536 no_residue[i] = ret;
1537 ch_floor_ptr += vlen;
1543 if (!(no_residue[mapping->
magnitude[i]] & no_residue[mapping->
angle[i]])) {
1545 no_residue[mapping->
angle[i]] = 0;
1551 for (i = 0; i < mapping->
submaps; ++i) {
1557 if ((mapping->
submaps == 1) || (i == mapping->
mux[j])) {
1558 res_chan[j] = res_num;
1559 if (no_residue[j]) {
1560 do_not_decode[ch] = 1;
1562 do_not_decode[ch] = 0;
1579 ch_res_ptr += ch * vlen;
1595 mdct = &vc->
mdct[blockflag];
1600 vc->
dsp.
vector_fmul(ch_floor_ptr, ch_floor_ptr, ch_res_ptr, blocksize / 2);
1601 mdct->
imdct_half(mdct, ch_res_ptr, ch_floor_ptr);
1606 retlen = (blocksize + vc->
blocksize[previous_window]) / 4;
1611 float *saved = vc->
saved + j * bs1 / 4;
1613 float *buf = residue;
1614 const float *win = vc->
win[blockflag & previous_window];
1616 if (blockflag == previous_window) {
1618 }
else if (blockflag > previous_window) {
1620 memcpy(ret+bs0/2, buf+bs0/4, ((bs1-bs0)/4) *
sizeof(
float));
1622 memcpy(ret, saved, ((bs1 - bs0) / 4) *
sizeof(
float));
1625 memcpy(saved, buf + blocksize / 4, blocksize / 4 *
sizeof(
float));
1635 int *got_frame_ptr,
AVPacket *avpkt)
1637 const uint8_t *buf = avpkt->
data;
1638 int buf_size = avpkt->
size;
1641 const float *channel_ptrs[255];
1657 av_dlog(
NULL,
"parsed %d bytes %d bits, returned %d samples (*ch*bits) \n",