sws: Move fast bilinear C code into seperate file

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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                                        \

libswscale/hscale_fast_bilinear.c

+/*
+ * Copyright (C) 2001-2011 Michael Niedermayer <michaelni@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;
+    }
+}

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;

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)
 {