mirror of
https://github.com/FFmpeg/FFmpeg.git
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454403ba55
Originally committed as revision 18949 to svn://svn.ffmpeg.org/ffmpeg/trunk
315 lines
10 KiB
C
315 lines
10 KiB
C
/*
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* Copyright (c) 2002 Brian Foley
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* Copyright (c) 2002 Dieter Shirley
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* Copyright (c) 2003-2004 Romain Dolbeau <romain@dolbeau.org>
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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 "libavcodec/dsputil.h"
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#include "dsputil_ppc.h"
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#include "dsputil_altivec.h"
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void fdct_altivec(int16_t *block);
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void gmc1_altivec(uint8_t *dst, uint8_t *src, int stride, int h,
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int x16, int y16, int rounder);
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void idct_put_altivec(uint8_t *dest, int line_size, int16_t *block);
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void idct_add_altivec(uint8_t *dest, int line_size, int16_t *block);
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void ff_vp3_idct_altivec(DCTELEM *block);
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void ff_vp3_idct_put_altivec(uint8_t *dest, int line_size, DCTELEM *block);
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void ff_vp3_idct_add_altivec(uint8_t *dest, int line_size, DCTELEM *block);
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void dsputil_h264_init_ppc(DSPContext* c, AVCodecContext *avctx);
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void dsputil_init_altivec(DSPContext* c, AVCodecContext *avctx);
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void vc1dsp_init_altivec(DSPContext* c, AVCodecContext *avctx);
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void float_init_altivec(DSPContext* c, AVCodecContext *avctx);
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void int_init_altivec(DSPContext* c, AVCodecContext *avctx);
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int mm_flags = 0;
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int mm_support(void)
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{
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int result = 0;
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#if HAVE_ALTIVEC
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if (has_altivec()) {
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result |= FF_MM_ALTIVEC;
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}
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#endif /* result */
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return result;
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}
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#if CONFIG_POWERPC_PERF
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unsigned long long perfdata[POWERPC_NUM_PMC_ENABLED][powerpc_perf_total][powerpc_data_total];
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/* list below must match enum in dsputil_ppc.h */
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static unsigned char* perfname[] = {
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"ff_fft_calc_altivec",
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"gmc1_altivec",
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"dct_unquantize_h263_altivec",
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"fdct_altivec",
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"idct_add_altivec",
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"idct_put_altivec",
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"put_pixels16_altivec",
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"avg_pixels16_altivec",
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"avg_pixels8_altivec",
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"put_pixels8_xy2_altivec",
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"put_no_rnd_pixels8_xy2_altivec",
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"put_pixels16_xy2_altivec",
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"put_no_rnd_pixels16_xy2_altivec",
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"hadamard8_diff8x8_altivec",
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"hadamard8_diff16_altivec",
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"avg_pixels8_xy2_altivec",
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"clear_blocks_dcbz32_ppc",
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"clear_blocks_dcbz128_ppc",
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"put_h264_chroma_mc8_altivec",
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"avg_h264_chroma_mc8_altivec",
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"put_h264_qpel16_h_lowpass_altivec",
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"avg_h264_qpel16_h_lowpass_altivec",
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"put_h264_qpel16_v_lowpass_altivec",
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"avg_h264_qpel16_v_lowpass_altivec",
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"put_h264_qpel16_hv_lowpass_altivec",
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"avg_h264_qpel16_hv_lowpass_altivec",
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""
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};
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#include <stdio.h>
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#endif
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#if CONFIG_POWERPC_PERF
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void powerpc_display_perf_report(void)
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{
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int i, j;
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av_log(NULL, AV_LOG_INFO, "PowerPC performance report\n Values are from the PMC registers, and represent whatever the registers are set to record.\n");
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for(i = 0 ; i < powerpc_perf_total ; i++) {
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for (j = 0; j < POWERPC_NUM_PMC_ENABLED ; j++) {
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if (perfdata[j][i][powerpc_data_num] != (unsigned long long)0)
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av_log(NULL, AV_LOG_INFO,
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" Function \"%s\" (pmc%d):\n\tmin: %"PRIu64"\n\tmax: %"PRIu64"\n\tavg: %1.2lf (%"PRIu64")\n",
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perfname[i],
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j+1,
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perfdata[j][i][powerpc_data_min],
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perfdata[j][i][powerpc_data_max],
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(double)perfdata[j][i][powerpc_data_sum] /
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(double)perfdata[j][i][powerpc_data_num],
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perfdata[j][i][powerpc_data_num]);
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}
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}
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}
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#endif /* CONFIG_POWERPC_PERF */
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/* ***** WARNING ***** WARNING ***** WARNING ***** */
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/*
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clear_blocks_dcbz32_ppc will not work properly on PowerPC processors with a
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cache line size not equal to 32 bytes.
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Fortunately all processor used by Apple up to at least the 7450 (aka second
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generation G4) use 32 bytes cache line.
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This is due to the use of the 'dcbz' instruction. It simply clear to zero a
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single cache line, so you need to know the cache line size to use it !
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It's absurd, but it's fast...
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update 24/06/2003 : Apple released yesterday the G5, with a PPC970. cache line
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size: 128 bytes. Oups.
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The semantic of dcbz was changed, it always clear 32 bytes. so the function
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below will work, but will be slow. So I fixed check_dcbz_effect to use dcbzl,
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which is defined to clear a cache line (as dcbz before). So we still can
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distinguish, and use dcbz (32 bytes) or dcbzl (one cache line) as required.
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see <http://developer.apple.com/technotes/tn/tn2087.html>
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and <http://developer.apple.com/technotes/tn/tn2086.html>
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*/
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void clear_blocks_dcbz32_ppc(DCTELEM *blocks)
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{
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POWERPC_PERF_DECLARE(powerpc_clear_blocks_dcbz32, 1);
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register int misal = ((unsigned long)blocks & 0x00000010);
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register int i = 0;
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POWERPC_PERF_START_COUNT(powerpc_clear_blocks_dcbz32, 1);
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#if 1
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if (misal) {
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((unsigned long*)blocks)[0] = 0L;
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((unsigned long*)blocks)[1] = 0L;
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((unsigned long*)blocks)[2] = 0L;
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((unsigned long*)blocks)[3] = 0L;
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i += 16;
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}
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for ( ; i < sizeof(DCTELEM)*6*64-31 ; i += 32) {
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__asm__ volatile("dcbz %0,%1" : : "b" (blocks), "r" (i) : "memory");
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}
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if (misal) {
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((unsigned long*)blocks)[188] = 0L;
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((unsigned long*)blocks)[189] = 0L;
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((unsigned long*)blocks)[190] = 0L;
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((unsigned long*)blocks)[191] = 0L;
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i += 16;
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}
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#else
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memset(blocks, 0, sizeof(DCTELEM)*6*64);
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#endif
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POWERPC_PERF_STOP_COUNT(powerpc_clear_blocks_dcbz32, 1);
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}
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/* same as above, when dcbzl clear a whole 128B cache line
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i.e. the PPC970 aka G5 */
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#if HAVE_DCBZL
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void clear_blocks_dcbz128_ppc(DCTELEM *blocks)
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{
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POWERPC_PERF_DECLARE(powerpc_clear_blocks_dcbz128, 1);
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register int misal = ((unsigned long)blocks & 0x0000007f);
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register int i = 0;
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POWERPC_PERF_START_COUNT(powerpc_clear_blocks_dcbz128, 1);
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#if 1
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if (misal) {
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// we could probably also optimize this case,
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// but there's not much point as the machines
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// aren't available yet (2003-06-26)
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memset(blocks, 0, sizeof(DCTELEM)*6*64);
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}
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else
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for ( ; i < sizeof(DCTELEM)*6*64 ; i += 128) {
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__asm__ volatile("dcbzl %0,%1" : : "b" (blocks), "r" (i) : "memory");
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}
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#else
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memset(blocks, 0, sizeof(DCTELEM)*6*64);
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#endif
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POWERPC_PERF_STOP_COUNT(powerpc_clear_blocks_dcbz128, 1);
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}
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#else
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void clear_blocks_dcbz128_ppc(DCTELEM *blocks)
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{
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memset(blocks, 0, sizeof(DCTELEM)*6*64);
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}
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#endif
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#if HAVE_DCBZL
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/* check dcbz report how many bytes are set to 0 by dcbz */
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/* update 24/06/2003 : replace dcbz by dcbzl to get
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the intended effect (Apple "fixed" dcbz)
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unfortunately this cannot be used unless the assembler
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knows about dcbzl ... */
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long check_dcbzl_effect(void)
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{
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register char *fakedata = av_malloc(1024);
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register char *fakedata_middle;
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register long zero = 0;
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register long i = 0;
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long count = 0;
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if (!fakedata) {
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return 0L;
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}
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fakedata_middle = (fakedata + 512);
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memset(fakedata, 0xFF, 1024);
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/* below the constraint "b" seems to mean "Address base register"
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in gcc-3.3 / RS/6000 speaks. seems to avoid using r0, so.... */
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__asm__ volatile("dcbzl %0, %1" : : "b" (fakedata_middle), "r" (zero));
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for (i = 0; i < 1024 ; i ++) {
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if (fakedata[i] == (char)0)
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count++;
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}
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av_free(fakedata);
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return count;
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}
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#else
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long check_dcbzl_effect(void)
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{
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return 0;
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}
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#endif
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static void prefetch_ppc(void *mem, int stride, int h)
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{
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register const uint8_t *p = mem;
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do {
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__asm__ volatile ("dcbt 0,%0" : : "r" (p));
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p+= stride;
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} while(--h);
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}
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void dsputil_init_ppc(DSPContext* c, AVCodecContext *avctx)
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{
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// Common optimizations whether AltiVec is available or not
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c->prefetch = prefetch_ppc;
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switch (check_dcbzl_effect()) {
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case 32:
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c->clear_blocks = clear_blocks_dcbz32_ppc;
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break;
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case 128:
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c->clear_blocks = clear_blocks_dcbz128_ppc;
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break;
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default:
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break;
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}
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#if HAVE_ALTIVEC
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if(CONFIG_H264_DECODER) dsputil_h264_init_ppc(c, avctx);
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if (has_altivec()) {
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mm_flags |= FF_MM_ALTIVEC;
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dsputil_init_altivec(c, avctx);
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if(CONFIG_VC1_DECODER || CONFIG_WMV3_DECODER)
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vc1dsp_init_altivec(c, avctx);
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float_init_altivec(c, avctx);
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int_init_altivec(c, avctx);
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c->gmc1 = gmc1_altivec;
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#if CONFIG_ENCODERS
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if (avctx->dct_algo == FF_DCT_AUTO ||
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avctx->dct_algo == FF_DCT_ALTIVEC) {
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c->fdct = fdct_altivec;
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}
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#endif //CONFIG_ENCODERS
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if (avctx->lowres==0) {
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if ((avctx->idct_algo == FF_IDCT_AUTO) ||
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(avctx->idct_algo == FF_IDCT_ALTIVEC)) {
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c->idct_put = idct_put_altivec;
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c->idct_add = idct_add_altivec;
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c->idct_permutation_type = FF_TRANSPOSE_IDCT_PERM;
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}else if((CONFIG_VP3_DECODER || CONFIG_VP5_DECODER || CONFIG_VP6_DECODER || CONFIG_THEORA_DECODER) &&
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avctx->idct_algo==FF_IDCT_VP3){
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c->idct_put = ff_vp3_idct_put_altivec;
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c->idct_add = ff_vp3_idct_add_altivec;
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c->idct = ff_vp3_idct_altivec;
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c->idct_permutation_type = FF_TRANSPOSE_IDCT_PERM;
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}
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}
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#if CONFIG_POWERPC_PERF
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{
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int i, j;
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for (i = 0 ; i < powerpc_perf_total ; i++) {
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for (j = 0; j < POWERPC_NUM_PMC_ENABLED ; j++) {
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perfdata[j][i][powerpc_data_min] = 0xFFFFFFFFFFFFFFFFULL;
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perfdata[j][i][powerpc_data_max] = 0x0000000000000000ULL;
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perfdata[j][i][powerpc_data_sum] = 0x0000000000000000ULL;
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perfdata[j][i][powerpc_data_num] = 0x0000000000000000ULL;
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}
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}
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}
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#endif /* CONFIG_POWERPC_PERF */
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}
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#endif /* HAVE_ALTIVEC */
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}
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