From c9a4fb0d0d988447f7232855abdb9c681e01469b Mon Sep 17 00:00:00 2001 From: Andree Buschmann Date: Sun, 11 Jul 2010 22:02:06 +0000 Subject: Clean up libfaad's sbr-qmf code. Move array to correct #ifdef-path, introduce macro, beautify indentations. git-svn-id: svn://svn.rockbox.org/rockbox/trunk@27394 a1c6a512-1295-4272-9138-f99709370657 --- apps/codecs/libfaad/sbr_qmf.c | 96 ++++++++++++++++++++----------------------- 1 file changed, 44 insertions(+), 52 deletions(-) (limited to 'apps') diff --git a/apps/codecs/libfaad/sbr_qmf.c b/apps/codecs/libfaad/sbr_qmf.c index a0b01661f8..85dc60ca3b 100644 --- a/apps/codecs/libfaad/sbr_qmf.c +++ b/apps/codecs/libfaad/sbr_qmf.c @@ -42,10 +42,12 @@ #define FAAD_SYNTHESIS_SCALE(X) ((X)>>1) #define FAAD_ANALYSIS_SCALE1(X) ((X)>>4) #define FAAD_ANALYSIS_SCALE2(X) ((X)) + #define FAAD_ANALYSIS_SCALE3(X) ((X)) #else #define FAAD_ANALYSIS_SCALE1(X) ((X)*scale) #define FAAD_ANALYSIS_SCALE1(X) ((X)) #define FAAD_ANALYSIS_SCALE2(X) (2.*(X)) + #define FAAD_ANALYSIS_SCALE3(X) ((X)/32.0) #endif qmfa_info *qmfa_init(uint8_t channels) @@ -186,42 +188,6 @@ void sbr_qmf_analysis_32(sbr_info *sbr, qmfa_info *qmfa, const real_t *input, } } -static const complex_t qmf32_pre_twiddle[] = -{ - { FRAC_CONST(0.999924701839145), FRAC_CONST(-0.012271538285720) }, - { FRAC_CONST(0.999322384588350), FRAC_CONST(-0.036807222941359) }, - { FRAC_CONST(0.998118112900149), FRAC_CONST(-0.061320736302209) }, - { FRAC_CONST(0.996312612182778), FRAC_CONST(-0.085797312344440) }, - { FRAC_CONST(0.993906970002356), FRAC_CONST(-0.110222207293883) }, - { FRAC_CONST(0.990902635427780), FRAC_CONST(-0.134580708507126) }, - { FRAC_CONST(0.987301418157858), FRAC_CONST(-0.158858143333861) }, - { FRAC_CONST(0.983105487431216), FRAC_CONST(-0.183039887955141) }, - { FRAC_CONST(0.978317370719628), FRAC_CONST(-0.207111376192219) }, - { FRAC_CONST(0.972939952205560), FRAC_CONST(-0.231058108280671) }, - { FRAC_CONST(0.966976471044852), FRAC_CONST(-0.254865659604515) }, - { FRAC_CONST(0.960430519415566), FRAC_CONST(-0.278519689385053) }, - { FRAC_CONST(0.953306040354194), FRAC_CONST(-0.302005949319228) }, - { FRAC_CONST(0.945607325380521), FRAC_CONST(-0.325310292162263) }, - { FRAC_CONST(0.937339011912575), FRAC_CONST(-0.348418680249435) }, - { FRAC_CONST(0.928506080473216), FRAC_CONST(-0.371317193951838) }, - { FRAC_CONST(0.919113851690058), FRAC_CONST(-0.393992040061048) }, - { FRAC_CONST(0.909167983090522), FRAC_CONST(-0.416429560097637) }, - { FRAC_CONST(0.898674465693954), FRAC_CONST(-0.438616238538528) }, - { FRAC_CONST(0.887639620402854), FRAC_CONST(-0.460538710958240) }, - { FRAC_CONST(0.876070094195407), FRAC_CONST(-0.482183772079123) }, - { FRAC_CONST(0.863972856121587), FRAC_CONST(-0.503538383725718) }, - { FRAC_CONST(0.851355193105265), FRAC_CONST(-0.524589682678469) }, - { FRAC_CONST(0.838224705554838), FRAC_CONST(-0.545324988422046) }, - { FRAC_CONST(0.824589302785025), FRAC_CONST(-0.565731810783613) }, - { FRAC_CONST(0.810457198252595), FRAC_CONST(-0.585797857456439) }, - { FRAC_CONST(0.795836904608884), FRAC_CONST(-0.605511041404326) }, - { FRAC_CONST(0.780737228572094), FRAC_CONST(-0.624859488142386) }, - { FRAC_CONST(0.765167265622459), FRAC_CONST(-0.643831542889791) }, - { FRAC_CONST(0.749136394523459), FRAC_CONST(-0.662415777590172) }, - { FRAC_CONST(0.732654271672413), FRAC_CONST(-0.680600997795453) }, - { FRAC_CONST(0.715730825283819), FRAC_CONST(-0.698376249408973) } -}; - qmfs_info *qmfs_init(uint8_t channels) { qmfs_info *qmfs = (qmfs_info*)faad_malloc(sizeof(qmfs_info)); @@ -266,13 +232,8 @@ void sbr_qmf_synthesis_32(sbr_info *sbr, qmfs_info *qmfs, qmf_t X[MAX_NTSRHFG][6 /* calculate 64 samples */ for (k = 0; k < 16; k++) { -#ifdef FIXED_POINT - y[k] = (QMF_RE(X[l][k]) - QMF_RE(X[l][31 - k])); - x[k] = (QMF_RE(X[l][k]) + QMF_RE(X[l][31 - k])); -#else - y[k] = (QMF_RE(X[l][k]) - QMF_RE(X[l][31 - k])) / 32.0; - x[k] = (QMF_RE(X[l][k]) + QMF_RE(X[l][31 - k])) / 32.0; -#endif + y[k] = FAAD_ANALYSIS_SCALE3((QMF_RE(X[l][k]) - QMF_RE(X[l][31-k]))); + x[k] = FAAD_ANALYSIS_SCALE3((QMF_RE(X[l][k]) + QMF_RE(X[l][31-k]))); } /* even n samples */ @@ -282,7 +243,7 @@ void sbr_qmf_synthesis_32(sbr_info *sbr, qmfs_info *qmfs, qmf_t X[MAX_NTSRHFG][6 for (n = 8; n < 24; n++) { - qmfs->v[qmfs->v_index + n*2] = qmfs->v[qmfs->v_index + 640 + n*2] = x[n-8]; + qmfs->v[qmfs->v_index + n*2 ] = qmfs->v[qmfs->v_index + 640 + n*2 ] = x[n-8]; qmfs->v[qmfs->v_index + n*2+1] = qmfs->v[qmfs->v_index + 640 + n*2+1] = y[n-8]; } for (n = 0; n < 16; n++) @@ -336,13 +297,8 @@ void sbr_qmf_synthesis_64(sbr_info *sbr, qmfs_info *qmfs, qmf_t X[MAX_NTSRHFG][6 /* calculate 128 samples */ for (k = 0; k < 32; k++) { -#ifdef FIXED_POINT - y[k] = (QMF_RE(X[l][k]) - QMF_RE(X[l][63 - k])); - x[k] = (QMF_RE(X[l][k]) + QMF_RE(X[l][63 - k])); -#else - y[k] = (QMF_RE(X[l][k]) - QMF_RE(X[l][63 - k])) / 32.0; - x[k] = (QMF_RE(X[l][k]) + QMF_RE(X[l][63 - k])) / 32.0; -#endif + y[k] = FAAD_ANALYSIS_SCALE3((QMF_RE(X[l][k]) - QMF_RE(X[l][63-k]))); + x[k] = FAAD_ANALYSIS_SCALE3((QMF_RE(X[l][k]) + QMF_RE(X[l][63-k]))); } /* even n samples */ @@ -352,7 +308,7 @@ void sbr_qmf_synthesis_64(sbr_info *sbr, qmfs_info *qmfs, qmf_t X[MAX_NTSRHFG][6 for (n = 16; n < 48; n++) { - qmfs->v[qmfs->v_index + n*2] = qmfs->v[qmfs->v_index + 1280 + n*2] = x[n-16]; + qmfs->v[qmfs->v_index + n*2] = qmfs->v[qmfs->v_index + 1280 + n*2 ] = x[n-16]; qmfs->v[qmfs->v_index + n*2+1] = qmfs->v[qmfs->v_index + 1280 + n*2+1] = y[n-16]; } for (n = 0; n < 32; n++) @@ -388,6 +344,42 @@ void sbr_qmf_synthesis_64(sbr_info *sbr, qmfs_info *qmfs, qmf_t X[MAX_NTSRHFG][6 } #else /* #ifdef SBR_LOW_POWER */ +static const complex_t qmf32_pre_twiddle[] = +{ + { FRAC_CONST(0.999924701839145), FRAC_CONST(-0.012271538285720) }, + { FRAC_CONST(0.999322384588350), FRAC_CONST(-0.036807222941359) }, + { FRAC_CONST(0.998118112900149), FRAC_CONST(-0.061320736302209) }, + { FRAC_CONST(0.996312612182778), FRAC_CONST(-0.085797312344440) }, + { FRAC_CONST(0.993906970002356), FRAC_CONST(-0.110222207293883) }, + { FRAC_CONST(0.990902635427780), FRAC_CONST(-0.134580708507126) }, + { FRAC_CONST(0.987301418157858), FRAC_CONST(-0.158858143333861) }, + { FRAC_CONST(0.983105487431216), FRAC_CONST(-0.183039887955141) }, + { FRAC_CONST(0.978317370719628), FRAC_CONST(-0.207111376192219) }, + { FRAC_CONST(0.972939952205560), FRAC_CONST(-0.231058108280671) }, + { FRAC_CONST(0.966976471044852), FRAC_CONST(-0.254865659604515) }, + { FRAC_CONST(0.960430519415566), FRAC_CONST(-0.278519689385053) }, + { FRAC_CONST(0.953306040354194), FRAC_CONST(-0.302005949319228) }, + { FRAC_CONST(0.945607325380521), FRAC_CONST(-0.325310292162263) }, + { FRAC_CONST(0.937339011912575), FRAC_CONST(-0.348418680249435) }, + { FRAC_CONST(0.928506080473216), FRAC_CONST(-0.371317193951838) }, + { FRAC_CONST(0.919113851690058), FRAC_CONST(-0.393992040061048) }, + { FRAC_CONST(0.909167983090522), FRAC_CONST(-0.416429560097637) }, + { FRAC_CONST(0.898674465693954), FRAC_CONST(-0.438616238538528) }, + { FRAC_CONST(0.887639620402854), FRAC_CONST(-0.460538710958240) }, + { FRAC_CONST(0.876070094195407), FRAC_CONST(-0.482183772079123) }, + { FRAC_CONST(0.863972856121587), FRAC_CONST(-0.503538383725718) }, + { FRAC_CONST(0.851355193105265), FRAC_CONST(-0.524589682678469) }, + { FRAC_CONST(0.838224705554838), FRAC_CONST(-0.545324988422046) }, + { FRAC_CONST(0.824589302785025), FRAC_CONST(-0.565731810783613) }, + { FRAC_CONST(0.810457198252595), FRAC_CONST(-0.585797857456439) }, + { FRAC_CONST(0.795836904608884), FRAC_CONST(-0.605511041404326) }, + { FRAC_CONST(0.780737228572094), FRAC_CONST(-0.624859488142386) }, + { FRAC_CONST(0.765167265622459), FRAC_CONST(-0.643831542889791) }, + { FRAC_CONST(0.749136394523459), FRAC_CONST(-0.662415777590172) }, + { FRAC_CONST(0.732654271672413), FRAC_CONST(-0.680600997795453) }, + { FRAC_CONST(0.715730825283819), FRAC_CONST(-0.698376249408973) } +}; + #define FAAD_CMPLX_PRETWIDDLE_SUB(k) \ (MUL_F(QMF_RE(X[l][k]), RE(qmf32_pre_twiddle[k])) - \ MUL_F(QMF_IM(X[l][k]), IM(qmf32_pre_twiddle[k]))) -- cgit v1.2.3