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pixblockdsp: Use AV_COPY128U for get_pixels_16_c 

Before:
  15543 decicycles in get_pixels, 4193214 runs,   1090 skips
After:
   5713 decicycles in get_pixels, 8387564 runs,   1044 skips
This commit is contained in:
Timothy Gu 2015-09-29 18:34:28 -07:00
parent 507b01f899
commit ee20354b29
2 changed files with 32 additions and 45 deletions
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37
libavcodec/pixblockdsp.c
View File

@ -20,15 +20,42 @@
#include "config.h" #include "config.h"
#include "libavutil/attributes.h" #include "libavutil/attributes.h"
#include "libavutil/intreadwrite.h"
#include "avcodec.h" #include "avcodec.h"
#include "pixblockdsp.h" #include "pixblockdsp.h"
#define BIT_DEPTH 16 static void get_pixels_16_c(int16_t *av_restrict block, const uint8_t *pixels,
#include "pixblockdsp_template.c" ptrdiff_t line_size)
#undef BIT_DEPTH {
AV_COPY128U(block + 0 * 8, pixels + 0 * line_size);
AV_COPY128U(block + 1 * 8, pixels + 1 * line_size);
AV_COPY128U(block + 2 * 8, pixels + 2 * line_size);
AV_COPY128U(block + 3 * 8, pixels + 3 * line_size);
AV_COPY128U(block + 4 * 8, pixels + 4 * line_size);
AV_COPY128U(block + 5 * 8, pixels + 5 * line_size);
AV_COPY128U(block + 6 * 8, pixels + 6 * line_size);
AV_COPY128U(block + 7 * 8, pixels + 7 * line_size);
}
#define BIT_DEPTH 8 static void get_pixels_8_c(int16_t *av_restrict block, const uint8_t *pixels,
#include "pixblockdsp_template.c" ptrdiff_t line_size)
{
int i;
/* read the pixels */
for (i = 0; i < 8; i++) {
block[0] = pixels[0];
block[1] = pixels[1];
block[2] = pixels[2];
block[3] = pixels[3];
block[4] = pixels[4];
block[5] = pixels[5];
block[6] = pixels[6];
block[7] = pixels[7];
pixels += line_size;
block += 8;
}
}
static void diff_pixels_c(int16_t *av_restrict block, const uint8_t *s1, static void diff_pixels_c(int16_t *av_restrict block, const uint8_t *s1,
const uint8_t *s2, int stride) const uint8_t *s2, int stride)

40
libavcodec/pixblockdsp_template.c
View File

@ -1,40 +0,0 @@
/*
* This file is part of FFmpeg.
*
* FFmpeg 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 2.1 of the License, or (at your option) any later version.
*
* FFmpeg 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 FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "bit_depth_template.c"
static void FUNCC(get_pixels)(int16_t *av_restrict block, const uint8_t *_pixels,
ptrdiff_t line_size)
{
const pixel *pixels = (const pixel *) _pixels;
int i;
/* read the pixels */
for (i = 0; i < 8; i++) {
block[0] = pixels[0];
block[1] = pixels[1];
block[2] = pixels[2];
block[3] = pixels[3];
block[4] = pixels[4];
block[5] = pixels[5];
block[6] = pixels[6];
block[7] = pixels[7];
pixels += line_size / sizeof(pixel);
block += 8;
}
}