len0rd/rockbox
1
0
Fork 1
mirror of https://github.com/Rockbox/rockbox.git synced 2026-04-12 00:47:49 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

Put two hot silk arrays on real stack (iram)

Browse source 
Speeds up decoding of 16kbps test file by 16.7MHz on H300.

Change-Id: I39c90e3b423ae8e2ee5c2b88c5dcec8d48807f77
This commit is contained in:
Nils Wallménius 2013-08-30 23:27:12 +02:00
parent a602ea3d3d
commit b592a7a8a5
2 changed files with 10 additions and 6 deletions
Download patch file Download diff file Expand all files Collapse all files

5
lib/rbcodec/codecs/libopus/silk/decode_core.c
View file

@ -49,7 +49,7 @@ void silk_decode_core(
opus_int32 LTP_pred_Q13, LPC_pred_Q10, Gain_Q10, inv_gain_Q31, gain_adj_Q16, rand_seed, offset_Q10;
opus_int32 *pred_lag_ptr, *pexc_Q14, *pres_Q14;
VARDECL( opus_int32, res_Q14 );
VARDECL( opus_int32, sLPC_Q14 );
/* VARDECL( opus_int32, sLPC_Q14 ); */
SAVE_STACK;
silk_assert( psDec->prev_gain_Q16 != 0 );
@ -57,7 +57,8 @@ void silk_decode_core(
ALLOC( sLTP, psDec->ltp_mem_length, opus_int16 );
ALLOC( sLTP_Q15, psDec->ltp_mem_length + psDec->frame_length, opus_int32 );
ALLOC( res_Q14, psDec->subfr_length, opus_int32 );
ALLOC( sLPC_Q14, psDec->subfr_length + MAX_LPC_ORDER, opus_int32 );
/* ALLOC( sLPC_Q14, psDec->subfr_length + MAX_LPC_ORDER, opus_int32 ); */
opus_int32 sLPC_Q14[psDec->subfr_length + MAX_LPC_ORDER]; /* worst case is 80 + 16 */
offset_Q10 = silk_Quantization_Offsets_Q10[ psDec->indices.signalType >> 1 ][ psDec->indices.quantOffsetType ];

11
lib/rbcodec/codecs/libopus/silk/resampler_private_IIR_FIR.c
View file

@ -72,10 +72,13 @@ void silk_resampler_private_IIR_FIR(
silk_resampler_state_struct *S = (silk_resampler_state_struct *)SS;
opus_int32 nSamplesIn;
opus_int32 max_index_Q16, index_increment_Q16;
VARDECL( opus_int16, buf );
SAVE_STACK;
/* VARDECL( opus_int16, buf );
SAVE_STACK; */
ALLOC( buf, 2 * S->batchSize + RESAMPLER_ORDER_FIR_12, opus_int16 );
/* ALLOC( buf, 2 * S->batchSize + RESAMPLER_ORDER_FIR_12, opus_int16 ); */
/* worst case = 2*16*10+8 = 328 * 2 = 656bytes */
opus_int16 buf[2 * S->batchSize + RESAMPLER_ORDER_FIR_12];
/* Copy buffered samples to start of buffer */
silk_memcpy( buf, S->sFIR.i16, RESAMPLER_ORDER_FIR_12 * sizeof( opus_int16 ) );
@ -103,5 +106,5 @@ void silk_resampler_private_IIR_FIR(
/* Copy last part of filtered signal to the state for the next call */
silk_memcpy( S->sFIR.i16, &buf[ nSamplesIn << 1 ], RESAMPLER_ORDER_FIR_12 * sizeof( opus_int16 ) );
RESTORE_STACK;
/* RESTORE_STACK; */
}