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- #include "defs.h"
- #include "tables.h"
- #include "count.h"
- void rmlt_coefs_to_samples(Word16 *coefs,
- Word16 *old_samples,
- Word16 *out_samples,
- Word16 dct_length,
- Word16 mag_shift)
- {
-
- Word16 index, vals_left;
- Word16 new_samples[MAX_DCT_LENGTH];
- Word16 *new_ptr, *old_ptr;
- Word16 *win_new, *win_old;
- Word16 *out_ptr;
- Word16 half_dct_size;
- Word32 sum;
-
- half_dct_size = shr_nocheck(dct_length,1);
-
-
- dct_type_iv_s(coefs, new_samples, dct_length);
-
- test();
- if (mag_shift > 0)
- {
- for(index=0;index<dct_length;index++)
- {
- new_samples[index] = shr_nocheck(new_samples[index],mag_shift);
- move16();
- }
- }
- else
- {
- test();
- if (mag_shift < 0)
- {
- mag_shift = negate(mag_shift);
- for(index=0;index<dct_length;index++)
- {
- new_samples[index] = shl_nocheck(new_samples[index],mag_shift);
- move16();
- }
- }
- }
-
-
- out_ptr = out_samples;
- move16();
- test();
- if (dct_length==DCT_LENGTH)
- {
- win_new = rmlt_to_samples_window;
- move16();
- win_old = rmlt_to_samples_window + dct_length;
- move16();
- }
- else
- {
- win_new = max_rmlt_to_samples_window;
- move16();
- win_old = max_rmlt_to_samples_window + dct_length;
- move16();
- }
- old_ptr = old_samples;
- move16();
- new_ptr = new_samples + half_dct_size;
- move16();
-
- for (vals_left = half_dct_size; vals_left > 0; vals_left--)
- {
- sum = 0L;
- move32();
- sum = L_mac(sum,*win_new++, *--new_ptr);
- sum = L_mac(sum,*--win_old, *old_ptr++);
- *out_ptr++ = itu_round(L_shl_nocheck(sum,2));
- move16();
- }
-
-
-
- for (vals_left = half_dct_size; vals_left > 0; vals_left--)
- {
- sum = 0L;
- move32();
- sum = L_mac(sum,*win_new++, *new_ptr++);
- sum = L_mac(sum,negate(*--win_old), *--old_ptr);
- *out_ptr++ = itu_round(L_shl_nocheck(sum,2));
- move16();
- }
-
-
-
-
-
- new_ptr = new_samples + half_dct_size;
- move16();
- old_ptr = old_samples;
- move16();
- for (vals_left = half_dct_size; vals_left > 0; vals_left--)
- {
- *old_ptr++ = *new_ptr++;
- move16();
- }
- }
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