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https://github.com/FFmpeg/FFmpeg.git
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7a1723086a
At the very least this should fix warnings about unused static functions if one or more of these is not defined. However even compilation might be broken if the compiler does not optimize the function away completely. This actually happens in case of the AVX function, since the function pointer is used in an assignment that is not under an #if and thus probably only optimized away after the function was already marked as used. Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
247 lines
9.3 KiB
C
247 lines
9.3 KiB
C
/*
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* MMX optimized MP3 decoding functions
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* Copyright (c) 2010 Vitor Sessak
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "libavutil/cpu.h"
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#include "libavutil/x86_cpu.h"
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#include "libavcodec/dsputil.h"
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#include "libavcodec/mpegaudiodsp.h"
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void ff_imdct36_float_sse(float *out, float *buf, float *in, float *win);
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void ff_imdct36_float_sse2(float *out, float *buf, float *in, float *win);
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void ff_imdct36_float_sse3(float *out, float *buf, float *in, float *win);
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void ff_imdct36_float_ssse3(float *out, float *buf, float *in, float *win);
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void ff_imdct36_float_avx(float *out, float *buf, float *in, float *win);
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void ff_four_imdct36_float_sse(float *out, float *buf, float *in, float *win,
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float *tmpbuf);
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void ff_four_imdct36_float_avx(float *out, float *buf, float *in, float *win,
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float *tmpbuf);
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DECLARE_ALIGNED(16, static float, mdct_win_sse)[2][4][4*40];
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#define MACS(rt, ra, rb) rt+=(ra)*(rb)
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#define MLSS(rt, ra, rb) rt-=(ra)*(rb)
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#define SUM8(op, sum, w, p) \
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{ \
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op(sum, (w)[0 * 64], (p)[0 * 64]); \
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op(sum, (w)[1 * 64], (p)[1 * 64]); \
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op(sum, (w)[2 * 64], (p)[2 * 64]); \
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op(sum, (w)[3 * 64], (p)[3 * 64]); \
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op(sum, (w)[4 * 64], (p)[4 * 64]); \
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op(sum, (w)[5 * 64], (p)[5 * 64]); \
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op(sum, (w)[6 * 64], (p)[6 * 64]); \
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op(sum, (w)[7 * 64], (p)[7 * 64]); \
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}
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static void apply_window(const float *buf, const float *win1,
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const float *win2, float *sum1, float *sum2, int len)
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{
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x86_reg count = - 4*len;
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const float *win1a = win1+len;
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const float *win2a = win2+len;
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const float *bufa = buf+len;
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float *sum1a = sum1+len;
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float *sum2a = sum2+len;
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#define MULT(a, b) \
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"movaps " #a "(%1,%0), %%xmm1 \n\t" \
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"movaps " #a "(%3,%0), %%xmm2 \n\t" \
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"mulps %%xmm2, %%xmm1 \n\t" \
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"subps %%xmm1, %%xmm0 \n\t" \
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"mulps " #b "(%2,%0), %%xmm2 \n\t" \
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"subps %%xmm2, %%xmm4 \n\t" \
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__asm__ volatile(
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"1: \n\t"
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"xorps %%xmm0, %%xmm0 \n\t"
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"xorps %%xmm4, %%xmm4 \n\t"
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MULT( 0, 0)
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MULT( 256, 64)
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MULT( 512, 128)
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MULT( 768, 192)
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MULT(1024, 256)
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MULT(1280, 320)
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MULT(1536, 384)
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MULT(1792, 448)
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"movaps %%xmm0, (%4,%0) \n\t"
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"movaps %%xmm4, (%5,%0) \n\t"
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"add $16, %0 \n\t"
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"jl 1b \n\t"
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:"+&r"(count)
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:"r"(win1a), "r"(win2a), "r"(bufa), "r"(sum1a), "r"(sum2a)
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);
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#undef MULT
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}
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static void apply_window_mp3(float *in, float *win, int *unused, float *out,
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int incr)
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{
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LOCAL_ALIGNED_16(float, suma, [17]);
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LOCAL_ALIGNED_16(float, sumb, [17]);
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LOCAL_ALIGNED_16(float, sumc, [17]);
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LOCAL_ALIGNED_16(float, sumd, [17]);
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float sum;
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/* copy to avoid wrap */
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memcpy(in + 512, in, 32 * sizeof(*in));
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apply_window(in + 16, win , win + 512, suma, sumc, 16);
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apply_window(in + 32, win + 48, win + 640, sumb, sumd, 16);
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SUM8(MACS, suma[0], win + 32, in + 48);
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sumc[ 0] = 0;
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sumb[16] = 0;
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sumd[16] = 0;
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#define SUMS(suma, sumb, sumc, sumd, out1, out2) \
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"movups " #sumd "(%4), %%xmm0 \n\t" \
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"shufps $0x1b, %%xmm0, %%xmm0 \n\t" \
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"subps " #suma "(%1), %%xmm0 \n\t" \
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"movaps %%xmm0," #out1 "(%0) \n\t" \
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\
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"movups " #sumc "(%3), %%xmm0 \n\t" \
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"shufps $0x1b, %%xmm0, %%xmm0 \n\t" \
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"addps " #sumb "(%2), %%xmm0 \n\t" \
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"movaps %%xmm0," #out2 "(%0) \n\t"
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if (incr == 1) {
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__asm__ volatile(
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SUMS( 0, 48, 4, 52, 0, 112)
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SUMS(16, 32, 20, 36, 16, 96)
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SUMS(32, 16, 36, 20, 32, 80)
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SUMS(48, 0, 52, 4, 48, 64)
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:"+&r"(out)
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:"r"(&suma[0]), "r"(&sumb[0]), "r"(&sumc[0]), "r"(&sumd[0])
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:"memory"
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);
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out += 16*incr;
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} else {
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int j;
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float *out2 = out + 32 * incr;
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out[0 ] = -suma[ 0];
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out += incr;
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out2 -= incr;
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for(j=1;j<16;j++) {
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*out = -suma[ j] + sumd[16-j];
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*out2 = sumb[16-j] + sumc[ j];
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out += incr;
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out2 -= incr;
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}
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}
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sum = 0;
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SUM8(MLSS, sum, win + 16 + 32, in + 32);
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*out = sum;
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}
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#define DECL_IMDCT_BLOCKS(CPU1, CPU2) \
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static void imdct36_blocks_ ## CPU1(float *out, float *buf, float *in, \
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int count, int switch_point, int block_type) \
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{ \
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int align_end = count - (count & 3); \
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int j; \
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for (j = 0; j < align_end; j+= 4) { \
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LOCAL_ALIGNED_16(float, tmpbuf, [1024]); \
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float *win = mdct_win_sse[switch_point && j < 4][block_type]; \
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/* apply window & overlap with previous buffer */ \
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\
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/* select window */ \
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ff_four_imdct36_float_ ## CPU2(out, buf, in, win, tmpbuf); \
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in += 4*18; \
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buf += 4*18; \
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out += 4; \
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} \
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for (; j < count; j++) { \
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/* apply window & overlap with previous buffer */ \
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\
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/* select window */ \
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int win_idx = (switch_point && j < 2) ? 0 : block_type; \
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float *win = ff_mdct_win_float[win_idx + (4 & -(j & 1))]; \
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\
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ff_imdct36_float_ ## CPU1(out, buf, in, win); \
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\
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in += 18; \
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buf++; \
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out++; \
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} \
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}
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#if HAVE_YASM
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#if HAVE_SSE
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DECL_IMDCT_BLOCKS(sse,sse)
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DECL_IMDCT_BLOCKS(sse2,sse)
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DECL_IMDCT_BLOCKS(sse3,sse)
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DECL_IMDCT_BLOCKS(ssse3,sse)
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#endif
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#if HAVE_AVX
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DECL_IMDCT_BLOCKS(avx,avx)
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#endif
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#endif
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void ff_mpadsp_init_mmx(MPADSPContext *s)
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{
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int mm_flags = av_get_cpu_flags();
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int i, j;
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for (j = 0; j < 4; j++) {
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for (i = 0; i < 40; i ++) {
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mdct_win_sse[0][j][4*i ] = ff_mdct_win_float[j ][i];
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mdct_win_sse[0][j][4*i + 1] = ff_mdct_win_float[j + 4][i];
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mdct_win_sse[0][j][4*i + 2] = ff_mdct_win_float[j ][i];
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mdct_win_sse[0][j][4*i + 3] = ff_mdct_win_float[j + 4][i];
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mdct_win_sse[1][j][4*i ] = ff_mdct_win_float[0 ][i];
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mdct_win_sse[1][j][4*i + 1] = ff_mdct_win_float[4 ][i];
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mdct_win_sse[1][j][4*i + 2] = ff_mdct_win_float[j ][i];
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mdct_win_sse[1][j][4*i + 3] = ff_mdct_win_float[j + 4][i];
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}
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}
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if (mm_flags & AV_CPU_FLAG_SSE2) {
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s->apply_window_float = apply_window_mp3;
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}
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#if HAVE_YASM
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if (0) {
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#if HAVE_AVX
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} else if (mm_flags & AV_CPU_FLAG_AVX && HAVE_AVX) {
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s->imdct36_blocks_float = imdct36_blocks_avx;
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#endif
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#if HAVE_SSE
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} else if (mm_flags & AV_CPU_FLAG_SSSE3) {
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s->imdct36_blocks_float = imdct36_blocks_ssse3;
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} else if (mm_flags & AV_CPU_FLAG_SSE3) {
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s->imdct36_blocks_float = imdct36_blocks_sse3;
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} else if (mm_flags & AV_CPU_FLAG_SSE2) {
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s->imdct36_blocks_float = imdct36_blocks_sse2;
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} else if (mm_flags & AV_CPU_FLAG_SSE) {
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s->imdct36_blocks_float = imdct36_blocks_sse;
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#endif /* HAVE_SSE */
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}
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#endif /* HAVE_YASM */
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}
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