From 87021f7c0ac4620eafd185ff11905ee643f72b6c Mon Sep 17 00:00:00 2001 From: Michael Sevakis Date: Sat, 18 May 2013 01:45:03 -0400 Subject: SPC Codec: Refactor for CPU and clean up some things. CPU optimization gets its own files in which to fill-in optimizable routines. Some pointless #if 0's for profiling need removal. Those macros are empty if not profiling. Force some functions that are undesirable to be force-inlined by the compiler to be not inlined. Change-Id: Ia7b7e45380d7efb20c9b1a4d52e05db3ef6bbaab --- lib/rbcodec/codecs/libspc/cpu/spc_dsp_coldfire.c | 198 +++++++++++++++++++++++ 1 file changed, 198 insertions(+) create mode 100644 lib/rbcodec/codecs/libspc/cpu/spc_dsp_coldfire.c (limited to 'lib/rbcodec/codecs/libspc/cpu/spc_dsp_coldfire.c') diff --git a/lib/rbcodec/codecs/libspc/cpu/spc_dsp_coldfire.c b/lib/rbcodec/codecs/libspc/cpu/spc_dsp_coldfire.c new file mode 100644 index 0000000000..b0d14d157e --- /dev/null +++ b/lib/rbcodec/codecs/libspc/cpu/spc_dsp_coldfire.c @@ -0,0 +1,198 @@ +/*************************************************************************** + * __________ __ ___. + * Open \______ \ ____ ____ | | _\_ |__ _______ ___ + * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / + * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < + * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ + * \/ \/ \/ \/ \/ + * $Id$ + * + * Copyright (C) 2007 Michael Sevakis (jhMikeS) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY + * KIND, either express or implied. + * + ****************************************************************************/ +#if SPC_NOINTERP + +#define SPC_LINEAR_INTERP +static inline int linear_interp( int16_t const* samples, int32_t position ) +{ + uint32_t f = position; + int32_t y0, y1; + + /** + * output = y0 + f*y1 - f*y0 + */ + asm volatile ( + "move.l %[f], %[y1] \n" /* separate frac and whole */ + "and.l #0xfff, %[f] \n" + "asr.l %[sh], %[y1] \n" + "move.l 2(%[s], %[y1].l*2), %[y1] \n" /* y0=upper, y1=lower */ + "mac.w %[f]l, %[y1]l, %%acc0 \n" /* %acc0 = f*y1 */ + "msac.w %[f]l, %[y1]u, %%acc0 \n" /* %acc0 -= f*y0 */ + "swap %[y1] \n" /* separate out y0 and sign extend */ + "movea.w %[y1], %[y0] \n" + "movclr.l %%acc0, %[y1] \n" /* fetch, scale down, add y0 */ + "asr.l %[sh], %[y1] \n" /* output = y0 + (result >> 12) */ + "add.l %[y0], %[y1] \n" + : [f]"+d"(f), [y0]"=&a"(y0), [y1]"=&d"(y1) + : [s]"a"(samples), [sh]"d"(12)); + + return y1; +} + +#define SPC_LINEAR_AMP +static inline int linear_amp( struct voice_t* voice, int output, + int* amp_0, int* amp_1 ) +{ + asm volatile ( + "mac.w %[out]l, %[envx]l, %%acc0" + : + : [out]"r"(output), [envx]"r"(voice->envx)); + asm volatile ( + "movclr.l %%acc0, %[out] \n" + "asr.l #8, %[out] \n" + "mac.l %[v0], %[out], %%acc0 \n" + "mac.l %[v1], %[out], %%acc1 \n" + "asr.l #3, %[out] \n" + : [out]"+r"(output) + : [v0]"r"((int) voice->volume [0]), + [v1]"r"((int) voice->volume [1])); + asm volatile ( + "movclr.l %%acc0, %[a0] \n" + "asr.l #3, %[a0] \n" + "movclr.l %%acc1, %[a1] \n" + "asr.l #3, %[a1] \n" + : [a0]"=d"(*amp_0), [a1]"=d"(*amp_1)); + + return output; +} + +#endif /* SPC_NOINTERP */ + + +#if !SPC_NOECHO + +#define SPC_DSP_ECHO_APPLY + +/* Echo filter history */ +static int32_t fir_buf[FIR_BUF_CNT] IBSS_ATTR_SPC + __attribute__(( aligned(FIR_BUF_ALIGN*1) )); + +static inline void echo_init( struct Spc_Dsp* this ) +{ + /* Initialize mask register with the buffer address mask */ + asm volatile ("move.l %0, %%mask" : : "i"(FIR_BUF_MASK)); + this->fir.ptr = fir_buf; + this->fir.hist_ptr = &fir_buf [1]; + ci->memset( fir_buf, 0, sizeof fir_buf ); +} + +static inline void echo_apply( struct Spc_Dsp* this, uint8_t* echo_ptr, + int* out_0, int* out_1 ) +{ + int t0, t1, t2; + + t1 = swap_odd_even32( *(int32_t *)echo_ptr ); + + /* Keep last 8 samples */ + *this->fir.ptr = t1; + this->fir.ptr = this->fir.hist_ptr; + + asm volatile ( + "move.l (%[c]) , %[t2] \n" + "mac.w %[t1]u, %[t2]u, <<, (%[p])+&, %[t0], %%acc0 \n" + "mac.w %[t1]l, %[t2]u, <<, (%[p])& , %[t1], %%acc1 \n" + "mac.w %[t0]u, %[t2]l, << , %%acc0 \n" + "mac.w %[t0]l, %[t2]l, <<, 4(%[c]) , %[t2], %%acc1 \n" + "mac.w %[t1]u, %[t2]u, <<, 4(%[p])& , %[t0], %%acc0 \n" + "mac.w %[t1]l, %[t2]u, <<, 8(%[p])& , %[t1], %%acc1 \n" + "mac.w %[t0]u, %[t2]l, << , %%acc0 \n" + "mac.w %[t0]l, %[t2]l, <<, 8(%[c]) , %[t2], %%acc1 \n" + "mac.w %[t1]u, %[t2]u, <<, 12(%[p])& , %[t0], %%acc0 \n" + "mac.w %[t1]l, %[t2]u, <<, 16(%[p])& , %[t1], %%acc1 \n" + "mac.w %[t0]u, %[t2]l, << , %%acc0 \n" + "mac.w %[t0]l, %[t2]l, <<, 12(%[c]) , %[t2], %%acc1 \n" + "mac.w %[t1]u, %[t2]u, <<, 20(%[p])& , %[t0], %%acc0 \n" + "mac.w %[t1]l, %[t2]u, << , %%acc1 \n" + "mac.w %[t0]u, %[t2]l, << , %%acc0 \n" + "mac.w %[t0]l, %[t2]l, << , %%acc1 \n" + : [t0]"=&r"(t0), [t1]"+r"(t1), [t2]"=&r"(t2), + [p]"+a"(this->fir.hist_ptr) + : [c]"a"(this->fir.coeff)); + asm volatile ( + "movclr.l %%acc0, %[o0] \n" + "movclr.l %%acc1, %[o1] \n" + "mac.l %[ev0], %[o0], >>, %%acc2 \n" /* echo volume */ + "mac.l %[ev1], %[o1], >>, %%acc3 \n" + : [o0]"=&r"(*out_0), [o1]"=&r"(*out_1) + : [ev0]"r"((int) this->r.g.echo_volume_0), + [ev1]"r"((int) this->r.g.echo_volume_1)); +} + +#define SPC_DSP_ECHO_FEEDBACK +static inline void echo_feedback( struct Spc_Dsp* this, uint8_t* echo_ptr, + int echo_0, int echo_1, int fb_0, int fb_1 ) +{ + asm volatile ( + /* scale echo voices; saturate if overflow */ + "mac.l %[sh], %[e1] , %%acc1 \n" + "mac.l %[sh], %[e0] , %%acc0 \n" + /* add scaled output from FIR filter */ + "mac.l %[fb1], %[ef], <<, %%acc1 \n" + "mac.l %[fb0], %[ef], <<, %%acc0 \n" + : + : [e0]"d"(echo_0), [e1]"d"(echo_1), + [fb0]"r"(fb_0), [fb1]"r"(fb_1), + [ef]"r"((int)this->r.g.echo_feedback), + [sh]"r"(1 << 9)); + /* swap and fetch feedback results */ + int t0; + asm volatile( + "move.l #0x00ff00ff, %[t0] \n" + "movclr.l %%acc1, %[e1] \n" + "swap.w %[e1] \n" + "movclr.l %%acc0, %[e0] \n" + "move.w %[e1], %[e0] \n" + "and.l %[e0], %[t0] \n" + "eor.l %[t0], %[e0] \n" + "lsl.l #8, %[t0] \n" + "lsr.l #8, %[e0] \n" + "or.l %[e0], %[t0] \n" + : [e0]"=&d"(echo_0), [e1]"=&d"(echo_1), + [t0]"=&d"(t0)); + + /* save final feedback into echo buffer */ + *(int32_t *)echo_ptr = t0; +} + +#define SPC_DSP_GENERATE_OUTPUT +static inline void echo_output( struct Spc_Dsp* this, int global_muting, + int global_vol_0, int global_vol_1, int chans_0, int chans_1, + int fb_0, int fb_1, int* out_0, int* out_1 ) +{ + asm volatile ( + "mac.l %[ch0], %[gv0], %%acc2 \n" /* global volume */ + "mac.l %[ch1], %[gv1], %%acc3 \n" + : + : [ch0]"r"(chans_0), [gv0]"r"(global_vol_0), + [ch1]"r"(chans_1), [gv1]"r"(global_vol_1)); + asm volatile ( + "movclr.l %%acc2, %[a0] \n" /* fetch mixed output */ + "movclr.l %%acc3, %[a1] \n" + "asr.l %[gm], %[a0] \n" /* scale by global_muting shift */ + "asr.l %[gm], %[a1] \n" + : [a0]"=&d"(*out_0), [a1]"=&d"(*out_1) + : [gm]"d"(global_muting)); + + /* scaled echo is stored in %acc2 and %acc3 */ + (void)this; (void)fb_0; (void)fb_1; +} + +#endif /* !SPC_NOECHO */ -- cgit v1.2.3