57 #define MONO 0x1000001
58 #define STEREO 0x1000002
59 #define JOINT_STEREO 0x1000003
60 #define MC_COOK 0x2000000 // multichannel Cook, not supported
62 #define SUBBAND_SIZE 20
63 #define MAX_SUBPACKETS 5
89 float mono_previous_buffer1[1024];
90 float mono_previous_buffer2[1024];
106 int *subband_coef_index,
int *subband_coef_sign,
113 float *decode_buffer,
114 float *mlt_buffer1,
float *mlt_buffer2);
117 cook_gains *gains_ptr,
float *previous_buffer);
120 int gain_index,
int gain_index_next);
171 for (i = -63; i < 64; i++) {
182 for (i = 0; i < 23; i++)
193 for (i = 0; i < 13; i++) {
199 for (i = 0; i < 7; i++) {
228 for (j = 0; j < mlt_size; j++)
237 av_log2(mlt_size) + 1);
251 for (i = 0; i < 5; i++)
257 #define DECODE_BYTES_PAD1(bytes) (3 - ((bytes) + 3) % 4)
258 #define DECODE_BYTES_PAD2(bytes) ((bytes) % 4 + DECODE_BYTES_PAD1(2 * (bytes)))
280 static inline int decode_bytes(
const uint8_t *inbuffer, uint8_t *out,
int bytes)
282 static const uint32_t
tab[4] = {
289 uint32_t *obuf = (uint32_t *) out;
296 off = (intptr_t) inbuffer & 3;
297 buf = (
const uint32_t *) (inbuffer - off);
300 for (i = 0; i < bytes / 4; i++)
301 obuf[i] = c ^ buf[i];
323 for (i = 0; i < 13; i++)
325 for (i = 0; i < 7; i++)
357 gaininfo[i++] = gain;
370 int *quant_index_table)
374 quant_index_table[0] =
get_bits(&q->
gb, 6) - 6;
390 quant_index_table[i] = quant_index_table[i - 1] + j - 12;
391 if (quant_index_table[i] > 63 || quant_index_table[i] < -63) {
393 "Invalid quantizer %d at position %d, outside [-63, 63] range\n",
394 quant_index_table[i], i);
411 int *category,
int *category_index)
413 int exp_idx, bias, tmpbias1, tmpbias2, bits_left, num_bits,
index,
v, i, j;
417 int tmp_categorize_array[128 * 2];
429 memset(&exp_index1, 0,
sizeof(exp_index1));
430 memset(&exp_index2, 0,
sizeof(exp_index2));
431 memset(&tmp_categorize_array, 0,
sizeof(tmp_categorize_array));
436 for (i = 32; i > 0; i = i / 2) {
440 exp_idx = av_clip((i - quant_index_table[index] + bias) / 2, 0, 7);
444 if (num_bits >= bits_left - 32)
451 exp_idx = av_clip((bias - quant_index_table[i]) / 2, 0, 7);
453 exp_index1[i] = exp_idx;
454 exp_index2[i] = exp_idx;
456 tmpbias1 = tmpbias2 = num_bits;
459 if (tmpbias1 + tmpbias2 > 2 * bits_left) {
463 if (exp_index1[i] < 7) {
464 v = (-2 * exp_index1[i]) - quant_index_table[i] + bias;
473 tmp_categorize_array[tmp_categorize_array1_idx++] =
index;
481 if (exp_index2[i] > 0) {
482 v = (-2 * exp_index2[i]) - quant_index_table[i] + bias;
491 tmp_categorize_array[--tmp_categorize_array2_idx] =
index;
499 category[i] = exp_index2[i];
502 category_index[i] = tmp_categorize_array[tmp_categorize_array2_idx++];
519 int idx = category_index[i];
536 int *subband_coef_index,
int *subband_coef_sign,
543 if (subband_coef_index[i]) {
545 if (subband_coef_sign[i])
565 int *subband_coef_index,
int *subband_coef_sign)
568 int vlc, vd, tmp, result;
572 for (i = 0; i <
vpr_tab[category]; i++) {
578 for (j = vd - 1; j >= 0; j--) {
580 subband_coef_index[vd * i + j] = vlc - tmp * (
kmax_tab[category] + 1);
583 for (j = 0; j < vd; j++) {
584 if (subband_coef_index[i * vd + j]) {
589 subband_coef_sign[i * vd + j] = 0;
592 subband_coef_sign[i * vd + j] = 0;
609 int *quant_index_table,
float *mlt_buffer)
621 index = category[band];
622 if (category[band] < 7) {
623 if (
unpack_SQVH(q, p, category[band], subband_coef_index, subband_coef_sign)) {
626 category[band + j] = 7;
630 memset(subband_coef_index, 0,
sizeof(subband_coef_index));
631 memset(subband_coef_sign, 0,
sizeof(subband_coef_sign));
634 subband_coef_index, subband_coef_sign,
652 int category_index[128];
653 int quant_index_table[102];
657 memset(&category, 0,
sizeof(category));
658 memset(&category_index, 0,
sizeof(category_index));
663 categorize(q, p, quant_index_table, category, category_index);
680 int gain_index,
int gain_index_next)
684 fc1 =
pow2tab[gain_index + 63];
686 if (gain_index == gain_index_next) {
690 fc2 = q->
gain_table[11 + (gain_index_next - gain_index)];
707 cook_gains *gains_ptr,
float *previous_buffer)
719 inbuffer[i] = inbuffer[i] * fc * q->
mlt_window[i] -
735 cook_gains *gains_ptr,
float *previous_buffer)
744 q->
imlt_window(q, buffer1, gains_ptr, previous_buffer);
747 for (i = 0; i < 8; i++)
748 if (gains_ptr->
now[i] || gains_ptr->
now[i + 1])
750 gains_ptr->
now[i], gains_ptr->
now[i + 1]);
753 memcpy(previous_buffer, buffer0,
771 int length = end - start + 1;
777 for (i = 0; i < length; i++)
780 for (i = 0; i < length; i++)
799 float *decode_buffer,
800 float *mlt_buffer1,
float *mlt_buffer2)
805 mlt_buffer1[SUBBAND_SIZE * subband + j] = f1 * decode_buffer[tmp_idx];
806 mlt_buffer2[SUBBAND_SIZE * subband + j] = f2 * decode_buffer[tmp_idx];
825 const float *cplscale;
827 memset(decouple_tab, 0,
sizeof(decouple_tab));
831 memset(mlt_buffer1, 0, 1024 *
sizeof(*mlt_buffer1));
832 memset(mlt_buffer2, 0, 1024 *
sizeof(*mlt_buffer2));
840 mlt_buffer1[i * 20 + j] = decode_buffer[i * 40 + j];
841 mlt_buffer2[i * 20 + j] = decode_buffer[i * 40 + 20 + j];
850 idx -= decouple_tab[cpl_tmp];
852 f1 = cplscale[decouple_tab[cpl_tmp] + 1];
854 q->
decouple(q, p, i, f1, f2, decode_buffer, mlt_buffer1, mlt_buffer2);
870 const uint8_t *inbuffer,
897 out[chan + q->
nb_channels * j] = av_clipf(output[j], -1.0, 1.0);
914 cook_gains *gains_ptr,
float *previous_buffer,
915 float *out,
int chan)
917 imlt_gain(q, decode_buffer, gains_ptr, previous_buffer);
932 const uint8_t *inbuffer,
float *outbuffer)
934 int sub_packet_size = p->
size;
978 int *got_frame_ptr,
AVPacket *avpkt)
980 const uint8_t *buf = avpkt->
data;
981 int buf_size = avpkt->
size;
988 if (buf_size < avctx->block_align)
1009 "frame subpacket size total > avctx->block_align!\n");
1020 "subpacket[%i] size %i js %i %i block_align %i\n",
1049 #define PRINT(a, b) av_log(q->avctx, AV_LOG_ERROR, " %s = %d\n", a, b);
1074 for (i = 0; i < 32; i++)
1075 if (mask & (1 << i))
1088 const uint8_t *edata_ptr = avctx->
extradata;
1089 const uint8_t *edata_ptr_end = edata_ptr + avctx->
extradata_size;
1092 unsigned int channel_mask = 0;
1097 if (extradata_size <= 0) {
1115 while (edata_ptr < edata_ptr_end) {
1118 if (extradata_size >= 8) {
1122 extradata_size -= 8;
1124 if (extradata_size >= 8) {
1125 bytestream_get_be32(&edata_ptr);
1128 extradata_size -= 8;
1181 if (extradata_size >= 4)
1285 "unknown amount of samples_per_channel = %d\n",
1300 dump_cook_context(q);