dsputil_ppc.c
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上传用户:wstnjxml
上传日期:2014-04-03
资源大小:7248k
文件大小:10k
源码类别:
Windows CE
开发平台:
C/C++
- /*
- * Copyright (c) 2002 Brian Foley
- * Copyright (c) 2002 Dieter Shirley
- * Copyright (c) 2003-2004 Romain Dolbeau <romain@dolbeau.org>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
- #include "../dsputil.h"
- #include "dsputil_ppc.h"
- #ifdef HAVE_ALTIVEC
- #include "dsputil_altivec.h"
- #endif
- extern void fdct_altivec(int16_t *block);
- extern void idct_put_altivec(uint8_t *dest, int line_size, int16_t *block);
- extern void idct_add_altivec(uint8_t *dest, int line_size, int16_t *block);
- int mm_flags = 0;
- int mm_support(void)
- {
- int result = 0;
- #ifdef HAVE_ALTIVEC
- if (has_altivec()) {
- result |= MM_ALTIVEC;
- }
- #endif /* result */
- return result;
- }
- #ifdef POWERPC_PERFORMANCE_REPORT
- unsigned long long perfdata[POWERPC_NUM_PMC_ENABLED][powerpc_perf_total][powerpc_data_total];
- /* list below must match enum in dsputil_ppc.h */
- static unsigned char* perfname[] = {
- "ff_fft_calc_altivec",
- "gmc1_altivec",
- "dct_unquantize_h263_altivec",
- "fdct_altivec",
- "idct_add_altivec",
- "idct_put_altivec",
- "put_pixels16_altivec",
- "avg_pixels16_altivec",
- "avg_pixels8_altivec",
- "put_pixels8_xy2_altivec",
- "put_no_rnd_pixels8_xy2_altivec",
- "put_pixels16_xy2_altivec",
- "put_no_rnd_pixels16_xy2_altivec",
- "hadamard8_diff8x8_altivec",
- "hadamard8_diff16_altivec",
- "avg_pixels8_xy2_altivec",
- "clear_blocks_dcbz32_ppc",
- "clear_blocks_dcbz128_ppc",
- "put_h264_chroma_mc8_altivec",
- "avg_h264_chroma_mc8_altivec",
- "put_h264_qpel16_h_lowpass_altivec",
- "avg_h264_qpel16_h_lowpass_altivec",
- "put_h264_qpel16_v_lowpass_altivec",
- "avg_h264_qpel16_v_lowpass_altivec",
- "put_h264_qpel16_hv_lowpass_altivec",
- "avg_h264_qpel16_hv_lowpass_altivec",
- ""
- };
- #include <stdio.h>
- #endif
- #ifdef POWERPC_PERFORMANCE_REPORT
- void powerpc_display_perf_report(void)
- {
- int i, j;
- av_log(NULL, AV_LOG_INFO, "PowerPC performance reportn Values are from the PMC registers, and represent whatever the registers are set to record.n");
- for(i = 0 ; i < powerpc_perf_total ; i++)
- {
- for (j = 0; j < POWERPC_NUM_PMC_ENABLED ; j++)
- {
- if (perfdata[j][i][powerpc_data_num] != (unsigned long long)0)
- av_log(NULL, AV_LOG_INFO,
- " Function "%s" (pmc%d):ntmin: %lluntmax: %lluntavg: %1.2lf (%llu)n",
- perfname[i],
- j+1,
- perfdata[j][i][powerpc_data_min],
- perfdata[j][i][powerpc_data_max],
- (double)perfdata[j][i][powerpc_data_sum] /
- (double)perfdata[j][i][powerpc_data_num],
- perfdata[j][i][powerpc_data_num]);
- }
- }
- }
- #endif /* POWERPC_PERFORMANCE_REPORT */
- /* ***** WARNING ***** WARNING ***** WARNING ***** */
- /*
- clear_blocks_dcbz32_ppc will not work properly
- on PowerPC processors with a cache line size
- not equal to 32 bytes.
- Fortunately all processor used by Apple up to
- at least the 7450 (aka second generation G4)
- use 32 bytes cache line.
- This is due to the use of the 'dcbz' instruction.
- It simply clear to zero a single cache line,
- so you need to know the cache line size to use it !
- It's absurd, but it's fast...
- update 24/06/2003 : Apple released yesterday the G5,
- with a PPC970. cache line size : 128 bytes. Oups.
- The semantic of dcbz was changed, it always clear
- 32 bytes. so the function below will work, but will
- be slow. So I fixed check_dcbz_effect to use dcbzl,
- which is defined to clear a cache line (as dcbz before).
- So we still can distinguish, and use dcbz (32 bytes)
- or dcbzl (one cache line) as required.
- see <http://developer.apple.com/technotes/tn/tn2087.html>
- and <http://developer.apple.com/technotes/tn/tn2086.html>
- */
- void clear_blocks_dcbz32_ppc(DCTELEM *blocks)
- {
- POWERPC_PERF_DECLARE(powerpc_clear_blocks_dcbz32, 1);
- register int misal = ((unsigned long)blocks & 0x00000010);
- register int i = 0;
- POWERPC_PERF_START_COUNT(powerpc_clear_blocks_dcbz32, 1);
- #if 1
- if (misal) {
- ((unsigned long*)blocks)[0] = 0L;
- ((unsigned long*)blocks)[1] = 0L;
- ((unsigned long*)blocks)[2] = 0L;
- ((unsigned long*)blocks)[3] = 0L;
- i += 16;
- }
- for ( ; i < sizeof(DCTELEM)*6*64-31 ; i += 32) {
- #ifndef __MWERKS__
- asm volatile("dcbz %0,%1" : : "b" (blocks), "r" (i) : "memory");
- #else
- __dcbz( blocks, i );
- #endif
- }
- if (misal) {
- ((unsigned long*)blocks)[188] = 0L;
- ((unsigned long*)blocks)[189] = 0L;
- ((unsigned long*)blocks)[190] = 0L;
- ((unsigned long*)blocks)[191] = 0L;
- i += 16;
- }
- #else
- memset(blocks, 0, sizeof(DCTELEM)*6*64);
- #endif
- POWERPC_PERF_STOP_COUNT(powerpc_clear_blocks_dcbz32, 1);
- }
- /* same as above, when dcbzl clear a whole 128B cache line
- i.e. the PPC970 aka G5 */
- #ifndef NO_DCBZL
- void clear_blocks_dcbz128_ppc(DCTELEM *blocks)
- {
- POWERPC_PERF_DECLARE(powerpc_clear_blocks_dcbz128, 1);
- register int misal = ((unsigned long)blocks & 0x0000007f);
- register int i = 0;
- POWERPC_PERF_START_COUNT(powerpc_clear_blocks_dcbz128, 1);
- #if 1
- if (misal) {
- // we could probably also optimize this case,
- // but there's not much point as the machines
- // aren't available yet (2003-06-26)
- memset(blocks, 0, sizeof(DCTELEM)*6*64);
- }
- else
- for ( ; i < sizeof(DCTELEM)*6*64 ; i += 128) {
- asm volatile("dcbzl %0,%1" : : "b" (blocks), "r" (i) : "memory");
- }
- #else
- memset(blocks, 0, sizeof(DCTELEM)*6*64);
- #endif
- POWERPC_PERF_STOP_COUNT(powerpc_clear_blocks_dcbz128, 1);
- }
- #else
- void clear_blocks_dcbz128_ppc(DCTELEM *blocks)
- {
- memset(blocks, 0, sizeof(DCTELEM)*6*64);
- }
- #endif
- #ifndef NO_DCBZL
- /* check dcbz report how many bytes are set to 0 by dcbz */
- /* update 24/06/2003 : replace dcbz by dcbzl to get
- the intended effect (Apple "fixed" dcbz)
- unfortunately this cannot be used unless the assembler
- knows about dcbzl ... */
- long check_dcbzl_effect(void)
- {
- register char *fakedata = (char*)av_malloc(1024);
- register char *fakedata_middle;
- register long zero = 0;
- register long i = 0;
- long count = 0;
- if (!fakedata)
- {
- return 0L;
- }
- fakedata_middle = (fakedata + 512);
- memset(fakedata, 0xFF, 1024);
- /* below the constraint "b" seems to mean "Address base register"
- in gcc-3.3 / RS/6000 speaks. seems to avoid using r0, so.... */
- asm volatile("dcbzl %0, %1" : : "b" (fakedata_middle), "r" (zero));
- for (i = 0; i < 1024 ; i ++)
- {
- if (fakedata[i] == (char)0)
- count++;
- }
- av_free(fakedata);
- return count;
- }
- #else
- long check_dcbzl_effect(void)
- {
- return 0;
- }
- #endif
- void dsputil_h264_init_ppc(DSPContext* c, AVCodecContext *avctx);
- void dsputil_init_ppc(DSPContext* c, AVCodecContext *avctx)
- {
- // Common optimizations whether Altivec is available or not
- switch (check_dcbzl_effect()) {
- case 32:
- c->clear_blocks = clear_blocks_dcbz32_ppc;
- break;
- case 128:
- c->clear_blocks = clear_blocks_dcbz128_ppc;
- break;
- default:
- break;
- }
- #ifdef HAVE_ALTIVEC
- dsputil_h264_init_ppc(c, avctx);
- if (has_altivec()) {
- mm_flags |= MM_ALTIVEC;
- // Altivec specific optimisations
- c->pix_abs[0][1] = sad16_x2_altivec;
- c->pix_abs[0][2] = sad16_y2_altivec;
- c->pix_abs[0][3] = sad16_xy2_altivec;
- c->pix_abs[0][0] = sad16_altivec;
- c->pix_abs[1][0] = sad8_altivec;
- c->sad[0]= sad16_altivec;
- c->sad[1]= sad8_altivec;
- c->pix_norm1 = pix_norm1_altivec;
- c->sse[1]= sse8_altivec;
- c->sse[0]= sse16_altivec;
- c->pix_sum = pix_sum_altivec;
- c->diff_pixels = diff_pixels_altivec;
- c->get_pixels = get_pixels_altivec;
- // next one disabled as it's untested.
- #if 0
- c->add_bytes= add_bytes_altivec;
- #endif /* 0 */
- c->put_pixels_tab[0][0] = put_pixels16_altivec;
- /* the two functions do the same thing, so use the same code */
- c->put_no_rnd_pixels_tab[0][0] = put_pixels16_altivec;
- c->avg_pixels_tab[0][0] = avg_pixels16_altivec;
- c->avg_pixels_tab[1][0] = avg_pixels8_altivec;
- c->avg_pixels_tab[1][3] = avg_pixels8_xy2_altivec;
- c->put_pixels_tab[1][3] = put_pixels8_xy2_altivec;
- c->put_no_rnd_pixels_tab[1][3] = put_no_rnd_pixels8_xy2_altivec;
- c->put_pixels_tab[0][3] = put_pixels16_xy2_altivec;
- c->put_no_rnd_pixels_tab[0][3] = put_no_rnd_pixels16_xy2_altivec;
- c->gmc1 = gmc1_altivec;
- #ifdef CONFIG_DARWIN // ATM gcc-3.3 and gcc-3.4 fail to compile these in linux...
- c->hadamard8_diff[0] = hadamard8_diff16_altivec;
- c->hadamard8_diff[1] = hadamard8_diff8x8_altivec;
- #endif
- #ifdef CONFIG_ENCODERS
- if (avctx->dct_algo == FF_DCT_AUTO ||
- avctx->dct_algo == FF_DCT_ALTIVEC)
- {
- c->fdct = fdct_altivec;
- }
- #endif //CONFIG_ENCODERS
- if (avctx->lowres==0)
- {
- if ((avctx->idct_algo == FF_IDCT_AUTO) ||
- (avctx->idct_algo == FF_IDCT_ALTIVEC))
- {
- c->idct_put = idct_put_altivec;
- c->idct_add = idct_add_altivec;
- #ifndef ALTIVEC_USE_REFERENCE_C_CODE
- c->idct_permutation_type = FF_TRANSPOSE_IDCT_PERM;
- #else /* ALTIVEC_USE_REFERENCE_C_CODE */
- c->idct_permutation_type = FF_NO_IDCT_PERM;
- #endif /* ALTIVEC_USE_REFERENCE_C_CODE */
- }
- }
- #ifdef POWERPC_PERFORMANCE_REPORT
- {
- int i, j;
- for (i = 0 ; i < powerpc_perf_total ; i++)
- {
- for (j = 0; j < POWERPC_NUM_PMC_ENABLED ; j++)
- {
- perfdata[j][i][powerpc_data_min] = 0xFFFFFFFFFFFFFFFFULL;
- perfdata[j][i][powerpc_data_max] = 0x0000000000000000ULL;
- perfdata[j][i][powerpc_data_sum] = 0x0000000000000000ULL;
- perfdata[j][i][powerpc_data_num] = 0x0000000000000000ULL;
- }
- }
- }
- #endif /* POWERPC_PERFORMANCE_REPORT */
- } else
- #endif /* HAVE_ALTIVEC */
- {
- // Non-AltiVec PPC optimisations
- // ... pending ...
- }
- }