diff options
Diffstat (limited to 'sbc/sbc.c')
| -rw-r--r-- | sbc/sbc.c | 33 |
1 files changed, 22 insertions, 11 deletions
@@ -776,12 +776,16 @@ static inline void _sbc_analyze_four(const int32_t *in, int32_t *out) static inline void sbc_analyze_four(struct sbc_encoder_state *state, struct sbc_frame *frame, int ch, int blk) { - int i; - /* Input 4 New Audio Samples */ - for (i = 39; i >= 4; i--) - state->X[ch][i] = state->X[ch][i - 4]; - for (i = 3; i >= 0; i--) - state->X[ch][i] = frame->pcm_sample[ch][blk * 4 + (3 - i)]; + int32_t *x = state->X[ch]; + int16_t *pcm = &frame->pcm_sample[ch][blk * 8]; + + /* Input 4 Audio Samples */ + memmove(x + 4, x, 36 * sizeof(*x)); + x[3] = pcm[0]; + x[2] = pcm[1]; + x[1] = pcm[2]; + x[0] = pcm[3]; + _sbc_analyze_four(state->X[ch], frame->sb_sample_f[blk][ch]); } @@ -912,13 +916,20 @@ static inline void sbc_analyze_eight(struct sbc_encoder_state *state, struct sbc_frame *frame, int ch, int blk) { - int i; + int32_t *x = state->X[ch]; + int16_t *pcm = &frame->pcm_sample[ch][blk * 8]; /* Input 8 Audio Samples */ - for (i = 79; i >= 8; i--) - state->X[ch][i] = state->X[ch][i - 8]; - for (i = 7; i >= 0; i--) - state->X[ch][i] = frame->pcm_sample[ch][blk * 8 + (7 - i)]; + memmove(x + 8, x, 72 * sizeof(*x)); + x[7] = pcm[0]; + x[6] = pcm[1]; + x[5] = pcm[2]; + x[4] = pcm[3]; + x[3] = pcm[4]; + x[2] = pcm[5]; + x[1] = pcm[6]; + x[0] = pcm[7]; + _sbc_analyze_eight(state->X[ch], frame->sb_sample_f[blk][ch]); } |