dashenc: Simplify code by using a local variable

[ffmpeg] / libavcodec / pngdsp.c

diff --git a/libavcodec/pngdsp.c b/libavcodec/pngdsp.c
index 00734d7d108d778542cc364b42d15c58cb6ba8b5..c0e9402948d93044a3ed81328161dad0a638a677 100644 (file)
--- a/libavcodec/pngdsp.c
+++ b/libavcodec/pngdsp.c
@@ -19,18 +19,19 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
+#include "libavutil/attributes.h"
 #include "libavutil/common.h"
 #include "png.h"
 #include "pngdsp.h"
 
 // 0x7f7f7f7f or 0x7f7f7f7f7f7f7f7f or whatever, depending on the cpu's native arithmetic size
-#define pb_7f (~0UL/255 * 0x7f)
-#define pb_80 (~0UL/255 * 0x80)
+#define pb_7f (~0UL / 255 * 0x7f)
+#define pb_80 (~0UL / 255 * 0x80)
 
 static void add_bytes_l2_c(uint8_t *dst, uint8_t *src1, uint8_t *src2, int w)
 {
     long i;
-    for (i = 0; i <= w - sizeof(long); i += sizeof(long)) {
+    for (i = 0; i <= w - (int) sizeof(long); i += sizeof(long)) {
         long a = *(long *)(src1 + i);
         long b = *(long *)(src2 + i);
         *(long *)(dst + i) = ((a & pb_7f) + (b & pb_7f)) ^ ((a ^ b) & pb_80);
@@ -39,10 +40,11 @@ static void add_bytes_l2_c(uint8_t *dst, uint8_t *src1, uint8_t *src2, int w)
         dst[i] = src1[i] + src2[i];
 }
 
-void ff_pngdsp_init(PNGDSPContext *dsp)
+av_cold void ff_pngdsp_init(PNGDSPContext *dsp)
 {
     dsp->add_bytes_l2         = add_bytes_l2_c;
     dsp->add_paeth_prediction = ff_add_png_paeth_prediction;
 
-    if (ARCH_X86) ff_pngdsp_init_x86(dsp);
+    if (ARCH_X86)
+        ff_pngdsp_init_x86(dsp);
 }