diff options
| author | Thom Johansen <thomj@rockbox.org> | 2005-10-28 20:21:58 +0000 |
|---|---|---|
| committer | Thom Johansen <thomj@rockbox.org> | 2005-10-28 20:21:58 +0000 |
| commit | c01b987ccafc4074292a063ef6fe0112ff30d12d (patch) | |
| tree | 9e37541dd144e3cd55293254aa05a770ed44d144 /apps/codecs | |
| parent | e12ab49b7318cee0674ba84d6376e80b0e6d7c18 (diff) | |
Squeezed two very frequently used arrays in IRAM for a very nice performance boost.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@7676 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'apps/codecs')
| -rw-r--r-- | apps/codecs/libmusepack/decoder.h | 8 | ||||
| -rw-r--r-- | apps/codecs/libmusepack/mpc_decoder.c | 6 |
2 files changed, 12 insertions, 2 deletions
diff --git a/apps/codecs/libmusepack/decoder.h b/apps/codecs/libmusepack/decoder.h index 9df0a849de..11acb7598b 100644 --- a/apps/codecs/libmusepack/decoder.h +++ b/apps/codecs/libmusepack/decoder.h @@ -136,8 +136,12 @@ typedef struct mpc_decoder_t { unsigned char SCF_shift[256]; #endif - MPC_SAMPLE_FORMAT V_L[MPC_V_MEM + 960]; - MPC_SAMPLE_FORMAT V_R[MPC_V_MEM + 960]; + /* These two see very frequent use in synth_filter.c, so we'll put them + in IRAM for Rockbox use. Actual arrays are placed in mpc_decoder.c */ + /* MPC_SAMPLE_FORMAT V_L[MPC_V_MEM + 960]; */ + /* MPC_SAMPLE_FORMAT V_R[MPC_V_MEM + 960]; */ + MPC_SAMPLE_FORMAT *V_L; + MPC_SAMPLE_FORMAT *V_R; MPC_SAMPLE_FORMAT Y_L[36][32]; MPC_SAMPLE_FORMAT Y_R[36][32]; MPC_SAMPLE_FORMAT SCF[256]; ///< holds adapted scalefactors (for clipping prevention) diff --git a/apps/codecs/libmusepack/mpc_decoder.c b/apps/codecs/libmusepack/mpc_decoder.c index 166c9f7232..f8fdd8889e 100644 --- a/apps/codecs/libmusepack/mpc_decoder.c +++ b/apps/codecs/libmusepack/mpc_decoder.c @@ -1106,6 +1106,9 @@ mpc_decoder_read_bitstream_sv7(mpc_decoder *d) } } +MPC_SAMPLE_FORMAT V_L[MPC_V_MEM + 960] IBSS_ATTR; +MPC_SAMPLE_FORMAT V_R[MPC_V_MEM + 960] IBSS_ATTR; + void mpc_decoder_setup(mpc_decoder *d, mpc_reader *r) { d->r = r; @@ -1174,6 +1177,9 @@ void mpc_decoder_setup(mpc_decoder *d, mpc_reader *r) mpc_decoder_init_huffman_sv6(d); mpc_decoder_init_huffman_sv7(d); + /* Link struct entries to actual tables which are placed in IRAM */ + d->V_L = V_L; + d->V_R = V_R; #if defined(CPU_COLDFIRE)&& !defined(SIMULATOR) coldfire_set_macsr(EMAC_FRACTIONAL | EMAC_SATURATE); #endif |