[FFmpeg-cvslog] sws: Move fast bilinear C code into seperate file
Michael Niedermayer
git at videolan.org
Sat Jul 19 05:38:00 CEST 2014
ffmpeg | branch: master | Michael Niedermayer <michaelni at gmx.at> | Sat Jul 19 04:57:47 2014 +0200| [e9f7c7aef96dd8ca3519f0cfaa52573cf63a1d74] | committer: Michael Niedermayer
sws: Move fast bilinear C code into seperate file
Signed-off-by: Michael Niedermayer <michaelni at gmx.at>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=e9f7c7aef96dd8ca3519f0cfaa52573cf63a1d74
---
libswscale/Makefile | 3 +-
libswscale/hscale_fast_bilinear.c | 55 +++++++++++++++++++++++++++++++++++++
libswscale/swscale.c | 38 ++-----------------------
libswscale/swscale_internal.h | 6 ++++
4 files changed, 65 insertions(+), 37 deletions(-)
diff --git a/libswscale/Makefile b/libswscale/Makefile
index e96837f..067e2b9 100644
--- a/libswscale/Makefile
+++ b/libswscale/Makefile
@@ -5,7 +5,8 @@ NAME = swscale
HEADERS = swscale.h \
version.h \
-OBJS = input.o \
+OBJS = hscale_fast_bilinear.o \
+ input.o \
options.o \
output.o \
rgb2rgb.o \
diff --git a/libswscale/hscale_fast_bilinear.c b/libswscale/hscale_fast_bilinear.c
new file mode 100644
index 0000000..82d6177
--- /dev/null
+++ b/libswscale/hscale_fast_bilinear.c
@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2001-2011 Michael Niedermayer <michaelni at gmx.at>
+ *
+ * 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 "swscale_internal.h"
+
+void ff_hyscale_fast_c(SwsContext *c, int16_t *dst, int dstWidth,
+ const uint8_t *src, int srcW, int xInc)
+{
+ int i;
+ unsigned int xpos = 0;
+ for (i = 0; i < dstWidth; i++) {
+ register unsigned int xx = xpos >> 16;
+ register unsigned int xalpha = (xpos & 0xFFFF) >> 9;
+ dst[i] = (src[xx] << 7) + (src[xx + 1] - src[xx]) * xalpha;
+ xpos += xInc;
+ }
+ for (i=dstWidth-1; (i*xInc)>>16 >=srcW-1; i--)
+ dst[i] = src[srcW-1]*128;
+}
+
+void ff_hcscale_fast_c(SwsContext *c, int16_t *dst1, int16_t *dst2,
+ int dstWidth, const uint8_t *src1,
+ const uint8_t *src2, int srcW, int xInc)
+{
+ int i;
+ unsigned int xpos = 0;
+ for (i = 0; i < dstWidth; i++) {
+ register unsigned int xx = xpos >> 16;
+ register unsigned int xalpha = (xpos & 0xFFFF) >> 9;
+ dst1[i] = (src1[xx] * (xalpha ^ 127) + src1[xx + 1] * xalpha);
+ dst2[i] = (src2[xx] * (xalpha ^ 127) + src2[xx + 1] * xalpha);
+ xpos += xInc;
+ }
+ for (i=dstWidth-1; (i*xInc)>>16 >=srcW-1; i--) {
+ dst1[i] = src1[srcW-1]*128;
+ dst2[i] = src2[srcW-1]*128;
+ }
+}
diff --git a/libswscale/swscale.c b/libswscale/swscale.c
index 9919d41..59ead12 100644
--- a/libswscale/swscale.c
+++ b/libswscale/swscale.c
@@ -221,21 +221,6 @@ static void lumRangeFromJpeg16_c(int16_t *_dst, int width)
dst[i] = (dst[i]*(14071/4) + (33561947<<4)/4)>>12;
}
-static void hyscale_fast_c(SwsContext *c, int16_t *dst, int dstWidth,
- const uint8_t *src, int srcW, int xInc)
-{
- int i;
- unsigned int xpos = 0;
- for (i = 0; i < dstWidth; i++) {
- register unsigned int xx = xpos >> 16;
- register unsigned int xalpha = (xpos & 0xFFFF) >> 9;
- dst[i] = (src[xx] << 7) + (src[xx + 1] - src[xx]) * xalpha;
- xpos += xInc;
- }
- for (i=dstWidth-1; (i*xInc)>>16 >=srcW-1; i--)
- dst[i] = src[srcW-1]*128;
-}
-
// *** horizontal scale Y line to temp buffer
static av_always_inline void hyscale(SwsContext *c, int16_t *dst, int dstWidth,
const uint8_t *src_in[4],
@@ -273,25 +258,6 @@ static av_always_inline void hyscale(SwsContext *c, int16_t *dst, int dstWidth,
convertRange(dst, dstWidth);
}
-static void hcscale_fast_c(SwsContext *c, int16_t *dst1, int16_t *dst2,
- int dstWidth, const uint8_t *src1,
- const uint8_t *src2, int srcW, int xInc)
-{
- int i;
- unsigned int xpos = 0;
- for (i = 0; i < dstWidth; i++) {
- register unsigned int xx = xpos >> 16;
- register unsigned int xalpha = (xpos & 0xFFFF) >> 9;
- dst1[i] = (src1[xx] * (xalpha ^ 127) + src1[xx + 1] * xalpha);
- dst2[i] = (src2[xx] * (xalpha ^ 127) + src2[xx + 1] * xalpha);
- xpos += xInc;
- }
- for (i=dstWidth-1; (i*xInc)>>16 >=srcW-1; i--) {
- dst1[i] = src1[srcW-1]*128;
- dst2[i] = src2[srcW-1]*128;
- }
-}
-
static av_always_inline void hcscale(SwsContext *c, int16_t *dst1,
int16_t *dst2, int dstWidth,
const uint8_t *src_in[4],
@@ -745,8 +711,8 @@ static av_cold void sws_init_swscale(SwsContext *c)
if (c->dstBpc <= 14) {
c->hyScale = c->hcScale = hScale8To15_c;
if (c->flags & SWS_FAST_BILINEAR) {
- c->hyscale_fast = hyscale_fast_c;
- c->hcscale_fast = hcscale_fast_c;
+ c->hyscale_fast = ff_hyscale_fast_c;
+ c->hcscale_fast = ff_hcscale_fast_c;
}
} else {
c->hyScale = c->hcScale = hScale8To19_c;
diff --git a/libswscale/swscale_internal.h b/libswscale/swscale_internal.h
index ae4e12a..ebfba54 100644
--- a/libswscale/swscale_internal.h
+++ b/libswscale/swscale_internal.h
@@ -859,6 +859,12 @@ void ff_sws_init_output_funcs(SwsContext *c,
void ff_sws_init_swscale_ppc(SwsContext *c);
void ff_sws_init_swscale_x86(SwsContext *c);
+void ff_hyscale_fast_c(SwsContext *c, int16_t *dst, int dstWidth,
+ const uint8_t *src, int srcW, int xInc);
+void ff_hcscale_fast_c(SwsContext *c, int16_t *dst1, int16_t *dst2,
+ int dstWidth, const uint8_t *src1,
+ const uint8_t *src2, int srcW, int xInc);
+
static inline void fillPlane16(uint8_t *plane, int stride, int width, int height, int y,
int alpha, int bits, const int big_endian)
{
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