From 9206ac80a5c3256738b887cf3cfe39f385ebc672 Mon Sep 17 00:00:00 2001
From: "Ronald S. Bultje" <rsbultje@gmail.com>
Date: Thu, 5 Apr 2012 17:30:19 -0700
Subject: swscale: handle last pixel if lines have an odd width.

Fixes bug 270.
---
 libswscale/output.c | 24 ++++++++++++------------
 1 file changed, 12 insertions(+), 12 deletions(-)

(limited to 'libswscale/output.c')

diff --git a/libswscale/output.c b/libswscale/output.c
index f1acf9ec92..5bc25fc35a 100644
--- a/libswscale/output.c
+++ b/libswscale/output.c
@@ -466,7 +466,7 @@ yuv2422_X_c_template(SwsContext *c, const int16_t *lumFilter,
 {
     int i;
 
-    for (i = 0; i < (dstW >> 1); i++) {
+    for (i = 0; i < ((dstW + 1) >> 1); i++) {
         int j;
         int Y1 = 1 << 18;
         int Y2 = 1 << 18;
@@ -509,7 +509,7 @@ yuv2422_2_c_template(SwsContext *c, const int16_t *buf[2],
     int uvalpha1 = 4095 - uvalpha;
     int i;
 
-    for (i = 0; i < (dstW >> 1); i++) {
+    for (i = 0; i < ((dstW + 1) >> 1); i++) {
         int Y1 = (buf0[i * 2]     * yalpha1  + buf1[i * 2]     * yalpha)  >> 19;
         int Y2 = (buf0[i * 2 + 1] * yalpha1  + buf1[i * 2 + 1] * yalpha)  >> 19;
         int U  = (ubuf0[i]        * uvalpha1 + ubuf1[i]        * uvalpha) >> 19;
@@ -534,7 +534,7 @@ yuv2422_1_c_template(SwsContext *c, const int16_t *buf0,
     int i;
 
     if (uvalpha < 2048) {
-        for (i = 0; i < (dstW >> 1); i++) {
+        for (i = 0; i < ((dstW + 1) >> 1); i++) {
             int Y1 = buf0[i * 2]     >> 7;
             int Y2 = buf0[i * 2 + 1] >> 7;
             int U  = ubuf0[i]        >> 7;
@@ -549,7 +549,7 @@ yuv2422_1_c_template(SwsContext *c, const int16_t *buf0,
         }
     } else {
         const int16_t *ubuf1 = ubuf[1], *vbuf1 = vbuf[1];
-        for (i = 0; i < (dstW >> 1); i++) {
+        for (i = 0; i < ((dstW + 1) >> 1); i++) {
             int Y1 =  buf0[i * 2]          >> 7;
             int Y2 =  buf0[i * 2 + 1]      >> 7;
             int U  = (ubuf0[i] + ubuf1[i]) >> 8;
@@ -589,7 +589,7 @@ yuv2rgb48_X_c_template(SwsContext *c, const int16_t *lumFilter,
 {
     int i;
 
-    for (i = 0; i < (dstW >> 1); i++) {
+    for (i = 0; i < ((dstW + 1) >> 1); i++) {
         int j;
         int Y1 = -0x40000000;
         int Y2 = -0x40000000;
@@ -652,7 +652,7 @@ yuv2rgb48_2_c_template(SwsContext *c, const int32_t *buf[2],
     int uvalpha1 = 4095 - uvalpha;
     int i;
 
-    for (i = 0; i < (dstW >> 1); i++) {
+    for (i = 0; i < ((dstW + 1) >> 1); i++) {
         int Y1 = (buf0[i * 2]     * yalpha1  + buf1[i * 2]     * yalpha) >> 14;
         int Y2 = (buf0[i * 2 + 1] * yalpha1  + buf1[i * 2 + 1] * yalpha) >> 14;
         int U  = (ubuf0[i]        * uvalpha1 + ubuf1[i]        * uvalpha + (-128 << 23)) >> 14;
@@ -690,7 +690,7 @@ yuv2rgb48_1_c_template(SwsContext *c, const int32_t *buf0,
     int i;
 
     if (uvalpha < 2048) {
-        for (i = 0; i < (dstW >> 1); i++) {
+        for (i = 0; i < ((dstW + 1) >> 1); i++) {
             int Y1 = (buf0[i * 2]    ) >> 2;
             int Y2 = (buf0[i * 2 + 1]) >> 2;
             int U  = (ubuf0[i] + (-128 << 11)) >> 2;
@@ -718,7 +718,7 @@ yuv2rgb48_1_c_template(SwsContext *c, const int32_t *buf0,
         }
     } else {
         const int32_t *ubuf1 = ubuf[1], *vbuf1 = vbuf[1];
-        for (i = 0; i < (dstW >> 1); i++) {
+        for (i = 0; i < ((dstW + 1) >> 1); i++) {
             int Y1 = (buf0[i * 2]    ) >> 2;
             int Y2 = (buf0[i * 2 + 1]) >> 2;
             int U  = (ubuf0[i] + ubuf1[i] + (-128 << 12)) >> 3;
@@ -932,7 +932,7 @@ yuv2rgb_X_c_template(SwsContext *c, const int16_t *lumFilter,
 {
     int i;
 
-    for (i = 0; i < (dstW >> 1); i++) {
+    for (i = 0; i < ((dstW + 1) >> 1); i++) {
         int j, A1, A2;
         int Y1 = 1 << 18;
         int Y2 = 1 << 18;
@@ -999,7 +999,7 @@ yuv2rgb_2_c_template(SwsContext *c, const int16_t *buf[2],
     int uvalpha1 = 4095 - uvalpha;
     int i;
 
-    for (i = 0; i < (dstW >> 1); i++) {
+    for (i = 0; i < ((dstW + 1) >> 1); i++) {
         int Y1 = (buf0[i * 2]     * yalpha1  + buf1[i * 2]     * yalpha)  >> 19;
         int Y2 = (buf0[i * 2 + 1] * yalpha1  + buf1[i * 2 + 1] * yalpha)  >> 19;
         int U  = (ubuf0[i]        * uvalpha1 + ubuf1[i]        * uvalpha) >> 19;
@@ -1037,7 +1037,7 @@ yuv2rgb_1_c_template(SwsContext *c, const int16_t *buf0,
     int i;
 
     if (uvalpha < 2048) {
-        for (i = 0; i < (dstW >> 1); i++) {
+        for (i = 0; i < ((dstW + 1) >> 1); i++) {
             int Y1 = buf0[i * 2]     >> 7;
             int Y2 = buf0[i * 2 + 1] >> 7;
             int U  = ubuf0[i]        >> 7;
@@ -1064,7 +1064,7 @@ yuv2rgb_1_c_template(SwsContext *c, const int16_t *buf0,
         }
     } else {
         const int16_t *ubuf1 = ubuf[1], *vbuf1 = vbuf[1];
-        for (i = 0; i < (dstW >> 1); i++) {
+        for (i = 0; i < ((dstW + 1) >> 1); i++) {
             int Y1 =  buf0[i * 2]          >> 7;
             int Y2 =  buf0[i * 2 + 1]      >> 7;
             int U  = (ubuf0[i] + ubuf1[i]) >> 8;
-- 
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