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https://github.com/FFmpeg/FFmpeg.git
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imgconvert: Move the shrink functions only where needed
This commit is contained in:
Vittorio Giovara
parent
9d3ea5cbf5
commit
892f037c55
@ -25,7 +25,6 @@
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*/
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#include "avcodec.h"
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#include "imgconvert.h"
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#include "internal.h"
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#include "mathops.h"
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#include "libavutil/colorspace.h"
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@ -154,92 +153,6 @@ enum AVPixelFormat avcodec_find_best_pix_fmt2(enum AVPixelFormat *pix_fmt_list,
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return dst_pix_fmt;
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}
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/* 2x2 -> 1x1 */
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void ff_shrink22(uint8_t *dst, int dst_wrap,
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const uint8_t *src, int src_wrap,
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int width, int height)
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{
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int w;
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const uint8_t *s1, *s2;
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uint8_t *d;
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for(;height > 0; height--) {
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s1 = src;
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s2 = s1 + src_wrap;
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d = dst;
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for(w = width;w >= 4; w-=4) {
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d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
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d[1] = (s1[2] + s1[3] + s2[2] + s2[3] + 2) >> 2;
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d[2] = (s1[4] + s1[5] + s2[4] + s2[5] + 2) >> 2;
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d[3] = (s1[6] + s1[7] + s2[6] + s2[7] + 2) >> 2;
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s1 += 8;
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s2 += 8;
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d += 4;
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}
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for(;w > 0; w--) {
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d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
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s1 += 2;
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s2 += 2;
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d++;
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}
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src += 2 * src_wrap;
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dst += dst_wrap;
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}
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}
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/* 4x4 -> 1x1 */
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void ff_shrink44(uint8_t *dst, int dst_wrap,
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const uint8_t *src, int src_wrap,
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int width, int height)
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{
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int w;
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const uint8_t *s1, *s2, *s3, *s4;
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uint8_t *d;
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for(;height > 0; height--) {
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s1 = src;
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s2 = s1 + src_wrap;
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s3 = s2 + src_wrap;
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s4 = s3 + src_wrap;
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d = dst;
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for(w = width;w > 0; w--) {
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d[0] = (s1[0] + s1[1] + s1[2] + s1[3] +
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s2[0] + s2[1] + s2[2] + s2[3] +
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s3[0] + s3[1] + s3[2] + s3[3] +
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s4[0] + s4[1] + s4[2] + s4[3] + 8) >> 4;
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s1 += 4;
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s2 += 4;
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s3 += 4;
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s4 += 4;
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d++;
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}
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src += 4 * src_wrap;
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dst += dst_wrap;
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}
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}
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/* 8x8 -> 1x1 */
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void ff_shrink88(uint8_t *dst, int dst_wrap,
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const uint8_t *src, int src_wrap,
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int width, int height)
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{
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int w, i;
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for(;height > 0; height--) {
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for(w = width;w > 0; w--) {
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int tmp=0;
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for(i=0; i<8; i++){
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tmp += src[0] + src[1] + src[2] + src[3] + src[4] + src[5] + src[6] + src[7];
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src += src_wrap;
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}
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*(dst++) = (tmp + 32)>>6;
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src += 8 - 8*src_wrap;
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}
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src += 8*src_wrap - 8*width;
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dst += dst_wrap - width;
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}
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}
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/* return true if yuv planar */
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static inline int is_yuv_planar(const AVPixFmtDescriptor *desc)
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{
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@ -1,31 +0,0 @@
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/*
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* This file is part of Libav.
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*
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* Libav 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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* Libav 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 Libav; 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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#ifndef AVCODEC_IMGCONVERT_H
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#define AVCODEC_IMGCONVERT_H
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#include <stdint.h>
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#include "version.h"
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/* 1/2^n downscaling functions */
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void ff_shrink22(uint8_t *dst, int dst_wrap, const uint8_t *src, int src_wrap, int width, int height);
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void ff_shrink44(uint8_t *dst, int dst_wrap, const uint8_t *src, int src_wrap, int width, int height);
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void ff_shrink88(uint8_t *dst, int dst_wrap, const uint8_t *src, int src_wrap, int width, int height);
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#endif /* AVCODEC_IMGCONVERT_H */
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@ -24,7 +24,6 @@
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#include "libavutil/attributes.h"
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#include "libavutil/imgutils.h"
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#include "avcodec.h"
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#include "imgconvert.h"
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#include "me_cmp.h"
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#include "mpegvideoencdsp.h"
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@ -153,6 +152,93 @@ static void draw_edges_8_c(uint8_t *buf, int wrap, int width, int height,
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memcpy(last_line + (i + 1) * wrap, last_line, width + w + w);
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}
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/* 2x2 -> 1x1 */
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static void shrink22(uint8_t *dst, int dst_wrap,
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const uint8_t *src, int src_wrap,
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int width, int height)
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{
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int w;
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const uint8_t *s1, *s2;
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uint8_t *d;
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for (; height > 0; height--) {
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s1 = src;
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s2 = s1 + src_wrap;
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d = dst;
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for (w = width; w >= 4; w -= 4) {
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d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
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d[1] = (s1[2] + s1[3] + s2[2] + s2[3] + 2) >> 2;
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d[2] = (s1[4] + s1[5] + s2[4] + s2[5] + 2) >> 2;
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d[3] = (s1[6] + s1[7] + s2[6] + s2[7] + 2) >> 2;
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s1 += 8;
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s2 += 8;
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d += 4;
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}
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for (; w > 0; w--) {
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d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
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s1 += 2;
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s2 += 2;
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d++;
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}
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src += 2 * src_wrap;
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dst += dst_wrap;
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}
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}
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/* 4x4 -> 1x1 */
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static void shrink44(uint8_t *dst, int dst_wrap,
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const uint8_t *src, int src_wrap,
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int width, int height)
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{
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int w;
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const uint8_t *s1, *s2, *s3, *s4;
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uint8_t *d;
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for (; height > 0; height--) {
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s1 = src;
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s2 = s1 + src_wrap;
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s3 = s2 + src_wrap;
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s4 = s3 + src_wrap;
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d = dst;
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for (w = width; w > 0; w--) {
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d[0] = (s1[0] + s1[1] + s1[2] + s1[3] +
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s2[0] + s2[1] + s2[2] + s2[3] +
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s3[0] + s3[1] + s3[2] + s3[3] +
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s4[0] + s4[1] + s4[2] + s4[3] + 8) >> 4;
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s1 += 4;
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s2 += 4;
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s3 += 4;
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s4 += 4;
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d++;
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}
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src += 4 * src_wrap;
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dst += dst_wrap;
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}
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}
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/* 8x8 -> 1x1 */
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static void shrink88(uint8_t *dst, int dst_wrap,
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const uint8_t *src, int src_wrap,
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int width, int height)
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{
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int w, i;
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for (; height > 0; height--) {
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for(w = width;w > 0; w--) {
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int tmp = 0;
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for (i = 0; i < 8; i++) {
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tmp += src[0] + src[1] + src[2] + src[3] +
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src[4] + src[5] + src[6] + src[7];
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src += src_wrap;
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}
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*(dst++) = (tmp + 32) >> 6;
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src += 8 - 8 * src_wrap;
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}
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src += 8 * src_wrap - 8 * width;
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dst += dst_wrap - width;
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}
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}
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av_cold void ff_mpegvideoencdsp_init(MpegvideoEncDSPContext *c,
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AVCodecContext *avctx)
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{
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@ -160,9 +246,9 @@ av_cold void ff_mpegvideoencdsp_init(MpegvideoEncDSPContext *c,
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c->add_8x8basis = add_8x8basis_c;
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c->shrink[0] = av_image_copy_plane;
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c->shrink[1] = ff_shrink22;
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c->shrink[2] = ff_shrink44;
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c->shrink[3] = ff_shrink88;
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c->shrink[1] = shrink22;
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c->shrink[2] = shrink44;
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c->shrink[3] = shrink88;
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c->pix_sum = pix_sum_c;
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c->pix_norm1 = pix_norm1_c;
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