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| author | Andree Buschmann <AndreeBuschmann@t-online.de> | 2010-07-10 00:11:39 +0000 |
|---|---|---|
| committer | Andree Buschmann <AndreeBuschmann@t-online.de> | 2010-07-10 00:11:39 +0000 |
| commit | 2f271ac54af1f481bd30b9d37240e52dc31c0c0e (patch) | |
| tree | 43390b28247bc790d5510b5f0278cafdb36e3316 /apps/codecs/libfaad | |
| parent | e7ffe1cd4a52960aa4c1a724dccfcde1e05cb17d (diff) | |
Just another MHz saved on ARM for aac he decoding.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@27365 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'apps/codecs/libfaad')
| -rw-r--r-- | apps/codecs/libfaad/sbr_qmf.c | 45 |
1 files changed, 43 insertions, 2 deletions
diff --git a/apps/codecs/libfaad/sbr_qmf.c b/apps/codecs/libfaad/sbr_qmf.c index 3651eedf95..944e619c5a 100644 --- a/apps/codecs/libfaad/sbr_qmf.c +++ b/apps/codecs/libfaad/sbr_qmf.c @@ -109,7 +109,7 @@ void sbr_qmf_analysis_32(sbr_info *sbr, qmfa_info *qmfa, const real_t *input, /* window and summation to create array u */ for (n = 0; n < 64; n++) { - idx0 = qmfa->x_index + n; idx1 = n * 2 * 5; + idx0 = qmfa->x_index + n; idx1 = n * 10; u[n] = FAAD_ANALYSIS_SCALE1( MUL_F(qmfa->x[idx0 ], qmf_c[idx1 ]) + MUL_F(qmfa->x[idx0 + 64], qmf_c[idx1 + 2]) + @@ -512,7 +512,7 @@ void sbr_qmf_synthesis_64(sbr_info *sbr, qmfs_info *qmfs, qmf_t X[MAX_NTSRHFG][6 p_buf_1 = qmfs->v + qmfs->v_index; /* calculate 64 output samples and window */ - +#if !defined(CPU_ARM) for (k = 0; k < 64; k++) { idx0 = k*10; @@ -528,6 +528,47 @@ void sbr_qmf_synthesis_64(sbr_info *sbr, qmfs_info *qmfs, qmf_t X[MAX_NTSRHFG][6 MUL_F(p_buf_1[k+1024 ], qmf_c[idx0+8]) + MUL_F(p_buf_1[k+1024+192], qmf_c[idx0+9])); } +#else + const real_t *qtab = qmf_c; + real_t *pbuf = p_buf_1; + for (k = 0; k < 64; k++, pbuf++) + { + real_t *pout = &output[out++]; + asm volatile ( + "ldmia %[qtab]!, { r0-r3 } \n\t" + "ldr r4, [%[pbuf]] \n\t" + "smull r5, r6, r4, r0 \n\t" + "ldr r4, [%[pbuf], #192*4] \n\t" + "smlal r5, r6, r4, r1 \n\t" + "ldr r4, [%[pbuf], #256*4] \n\t" + "smlal r5, r6, r4, r2 \n\t" + "ldr r4, [%[pbuf], #448*4] \n\t" + "smlal r5, r6, r4, r3 \n\t" + + "ldmia %[qtab]!, { r0-r3 } \n\t" + "ldr r4, [%[pbuf], #512*4] \n\t" + "smlal r5, r6, r4, r0 \n\t" + "ldr r4, [%[pbuf], #704*4] \n\t" + "smlal r5, r6, r4, r1 \n\t" + "ldr r4, [%[pbuf], #768*4] \n\t" + "smlal r5, r6, r4, r2 \n\t" + "ldr r4, [%[pbuf], #960*4] \n\t" + "smlal r5, r6, r4, r3 \n\t" + + "ldmia %[qtab]!, { r0-r1 } \n\t" + "mov r2, #1024*4 \n\t" + "ldr r4, [%[pbuf], r2] \n\t" + "smlal r5, r6, r4, r0 \n\t" + "mov r2, #1216*4 \n\t" + "ldr r4, [%[pbuf], r2] \n\t" + "smlal r5, r6, r4, r1 \n\t" + + "str r6, [%[pout]] \n" + : [qtab] "+r" (qtab) + : [pbuf] "r" (pbuf), [pout] "r" (pout) + : "r0", "r1", "r2", "r3", "r4", "r5", "r6", "memory"); + } +#endif /* update ringbuffer index */ qmfs->v_index -= 128; |