xref: /third_party/ffmpeg/libavcodec/dca_core.c

404     int ch, band, ret;
419         for (band = 0; band < s->nsubbands[ch]; band++)
420             s->prediction_mode[ch][band] = get_bits1(&s->gb);
424         for (band = 0; band < s->nsubbands[ch]; band++)
425             if (s->prediction_mode[ch][band])
426                 s->prediction_vq_index[ch][band] = get_bits(&s->gb, 12);
432         for (band = 0; band < s->subband_vq_start[ch]; band++) {
445             s->bit_allocation[ch][band] = abits;
457             for (band = 0; band < s->subband_vq_start[ch]; band++)
458                 if (s->bit_allocation[ch][band])
459                     s->transition_mode[sf][ch][band] = dca_get_vlc(&s->gb, &ff_dca_vlc_transition_mode, sel);
469         for (band = 0; band < s->subband_vq_start[ch]; band++) {
470             if (s->bit_allocation[ch][band]) {
473                 s->scale_factors[ch][band][0] = ret;
474                 if (s->transition_mode[sf][ch][band]) {
477                     s->scale_factors[ch][band][1] = ret;
480                 s->scale_factors[ch][band][0] = 0;
485         for (band = s->subband_vq_start[ch]; band < s->nsubbands[ch]; band++) {
488             s->scale_factors[ch][band][0] = ret;
508             for (band = s->nsubbands[ch]; band < s->nsubbands[src_ch]; band++) {
511                 s->joint_scale_factors[ch][band] = ret;
627     int n, ssf, ofs, ch, band;
643         for (band = s->subband_vq_start[ch]; band < s->nsubbands[ch]; band++)
645             vq_index[band] = get_bits(&s->gb, 10);
694             for (band = 0; band < s->subband_vq_start[ch]; band++) {
695                 int ret, trans_ssf, abits = s->bit_allocation[ch][band];
710                 trans_ssf = s->transition_mode[sf][ch][band];
714                     scale = s->scale_factors[ch][band][0];
716                     scale = s->scale_factors[ch][band][1];
724                 ff_dca_core_dequantize(s->subband_samples[ch][band] + ofs,
762     int ch, band;
767         for (band = 0; band < DCA_SUBBANDS; band++)
768             AV_ZERO128(s->subband_samples[ch][band] - DCA_ADPCM_COEFFS);
779     int ch, band;
789             for (band = 0; band < DCA_SUBBANDS; band++)
790                 s->subband_samples[ch][band] = s->subband_buffer +
791                     (ch * DCA_SUBBANDS + band) * nchsamples + DCA_ADPCM_COEFFS;
803     int sf, ch, ret, band, sub_pos, lfe_pos;
822         for (band = 0; band < nsubbands; band++) {
823             int32_t *samples = s->subband_samples[ch][band] - DCA_ADPCM_COEFFS;
828         for (; band < DCA_SUBBANDS; band++) {
829             int32_t *samples = s->subband_samples[ch][band] - DCA_ADPCM_COEFFS;
944     int     ssf, ch, band, ofs;
961         for (band = 0; band < xbr_nsubbands[ch]; band++) {
962             xbr_bit_allocation[ch][band] = get_bits(&s->gb, xbr_nabits[ch]);
963             if (xbr_bit_allocation[ch][band] > DCA_ABITS_MAX) {
995         for (band = 0; band < xbr_nsubbands[ch]; band++) {
996             if (xbr_bit_allocation[ch][band]) {
1002                 xbr_scale_factors[ch][band][0] = scale_table[scale_index];
1003                 if (xbr_transition_mode && s->transition_mode[sf][ch][band]) {
1009                     xbr_scale_factors[ch][band][1] = scale_table[scale_index];
1021             for (band = 0; band < xbr_nsubbands[ch]; band++) {
1022                 int ret, trans_ssf, abits = xbr_bit_allocation[ch][band];
1043                     trans_ssf = s->transition_mode[sf][ch][band];
1049                     scale = xbr_scale_factors[ch][band][0];
1051                     scale = xbr_scale_factors[ch][band][1];
1053                 ff_dca_core_dequantize(s->subband_samples[ch][band] + ofs,
1163     int n, ssf, ch, band, ofs;
1177         for (band = s->x96_subband_start; band < s->nsubbands[ch]; band++) {
1179             int32_t *samples = s->x96_subband_samples[ch][band] + *sub_pos;
1180             int32_t scale    = s->scale_factors[ch][band >> 1][band & 1];
1182             switch (s->bit_allocation[ch][band]) {
1211             for (band = s->x96_subband_start; band < s->nsubbands[ch]; band++) {
1212                 int ret, abits = s->bit_allocation[ch][band] - 1;
1231                 scale = s->scale_factors[ch][band >> 1][band & 1];
1233                 ff_dca_core_dequantize(s->x96_subband_samples[ch][band] + ofs,
1271     int ch, band;
1276         for (band = 0; band < DCA_SUBBANDS_X96; band++)
1277             AV_ZERO128(s->x96_subband_samples[ch][band] - DCA_ADPCM_COEFFS);
1287     int ch, band;
1297             for (band = 0; band < DCA_SUBBANDS_X96; band++)
1298                 s->x96_subband_samples[ch][band] = s->x96_subband_buffer +
1299                     (ch * DCA_SUBBANDS_X96 + band) * nchsamples + DCA_ADPCM_COEFFS;
1310     int ch, band, ret;
1317         for (band = s->x96_subband_start; band < s->nsubbands[ch]; band++)
1318             s->prediction_mode[ch][band] = get_bits1(&s->gb);
1322         for (band = s->x96_subband_start; band < s->nsubbands[ch]; band++)
1323             if (s->prediction_mode[ch][band])
1324                 s->prediction_vq_index[ch][band] = get_bits(&s->gb, 12);
1331         for (band = s->x96_subband_start; band < s->nsubbands[ch]; band++) {
1343             s->bit_allocation[ch][band] = abits;
1354         for (band = s->x96_subband_start; band < s->nsubbands[ch]; band++) {
1357             s->scale_factors[ch][band >> 1][band & 1] = ret;
1377             for (band = s->nsubbands[ch]; band < s->nsubbands[src_ch]; band++) {
1380                 s->joint_scale_factors[ch][band] = ret;
1481     int sf, ch, ret, band, sub_pos;
1500         for (band = 0; band < DCA_SUBBANDS_X96; band++) {
1501             int32_t *samples = s->x96_subband_samples[ch][band] - DCA_ADPCM_COEFFS;
1502             if (band >= s->x96_subband_start && band < nsubbands)

Indexes created Thu Nov 07 10:32:03 CST 2024