X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libswscale%2Fswscale.c;h=9cb7e8f6acd065ce7838ec54a1f475f5dd35dbec;hb=7c8ad72f1ce2ae747edd5c3f49bb052b1586c90f;hp=40695503ad20479f255123cb36e923a447f2df8f;hpb=4069096dd535ee99175c2a29c1a1f59c3fc110c1;p=ffmpeg

diff --git a/libswscale/swscale.c b/libswscale/swscale.c
index 40695503ad2..9cb7e8f6acd 100644
--- a/libswscale/swscale.c
+++ b/libswscale/swscale.c
@@ -266,12 +266,9 @@ static int swscale(SwsContext *c, const uint8_t *src[],
 
     /* vars which will change and which we need to store back in the context */
     int dstY         = c->dstY;
-    int lumBufIndex  = c->lumBufIndex;
-    int chrBufIndex  = c->chrBufIndex;
     int lastInLumBuf = c->lastInLumBuf;
     int lastInChrBuf = c->lastInChrBuf;
 
-
     int lumStart = 0;
     int lumEnd = c->descIndex[0];
     int chrStart = lumEnd;
@@ -283,25 +280,21 @@ static int swscale(SwsContext *c, const uint8_t *src[],
     SwsSlice *vout_slice = &c->slice[c->numSlice-1];
     SwsFilterDescriptor *desc = c->desc;
 
-
     int needAlpha = c->needAlpha;
 
     int hasLumHoles = 1;
     int hasChrHoles = 1;
 
-
     if (isPacked(c->srcFormat)) {
-        src[0] =
         src[1] =
         src[2] =
         src[3] = src[0];
-        srcStride[0] =
         srcStride[1] =
         srcStride[2] =
         srcStride[3] = srcStride[0];
     }
-    srcStride[1] <<= c->vChrDrop;
-    srcStride[2] <<= c->vChrDrop;
+    srcStride[1] *= 1 << c->vChrDrop;
+    srcStride[2] *= 1 << c->vChrDrop;
 
     DEBUG_BUFFERS("swscale() %p[%d] %p[%d] %p[%d] %p[%d] -> %p[%d] %p[%d] %p[%d] %p[%d]\n",
                   src[0], srcStride[0], src[1], srcStride[1],
@@ -341,8 +334,6 @@ static int swscale(SwsContext *c, const uint8_t *src[],
      * will not get executed. This is not really intended but works
      * currently, so people might do it. */
     if (srcSliceY == 0) {
-        lumBufIndex  = -1;
-        chrBufIndex  = -1;
         dstY         = 0;
         lastInLumBuf = -1;
         lastInChrBuf = -1;
@@ -466,7 +457,6 @@ static int swscale(SwsContext *c, const uint8_t *src[],
                 desc[i].process(c, &desc[i], firstPosY, lastPosY - firstPosY + 1);
         }
 
-        lumBufIndex += lastLumSrcY - lastInLumBuf;
         lastInLumBuf = lastLumSrcY;
 
         if (cPosY < lastChrSrcY + 1) {
@@ -474,20 +464,13 @@ static int swscale(SwsContext *c, const uint8_t *src[],
                 desc[i].process(c, &desc[i], firstCPosY, lastCPosY - firstCPosY + 1);
         }
 
-        chrBufIndex += lastChrSrcY - lastInChrBuf;
         lastInChrBuf = lastChrSrcY;
 
-        // wrap buf index around to stay inside the ring buffer
-        if (lumBufIndex >= vLumFilterSize)
-            lumBufIndex -= vLumFilterSize;
-        if (chrBufIndex >= vChrFilterSize)
-            chrBufIndex -= vChrFilterSize;
         if (!enough_lines)
             break;  // we can't output a dstY line so let's try with the next slice
 
 #if HAVE_MMX_INLINE
-        ff_updateMMXDitherTables(c, dstY, lumBufIndex, chrBufIndex,
-                              lastInLumBuf, lastInChrBuf);
+        ff_updateMMXDitherTables(c, dstY);
 #endif
         if (should_dither) {
             c->chrDither8 = ff_dither_8x8_128[chrDstY & 7];
@@ -517,6 +500,11 @@ static int swscale(SwsContext *c, const uint8_t *src[],
             fillPlane16(dst[3], dstStride[3], length, height, lastDstY,
                     1, desc->comp[3].depth,
                     isBE(dstFormat));
+        } else if (is32BPS(dstFormat)) {
+            const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(dstFormat);
+            fillPlane32(dst[3], dstStride[3], length, height, lastDstY,
+                    1, desc->comp[3].depth,
+                    isBE(dstFormat), desc->flags & AV_PIX_FMT_FLAG_FLOAT);
         } else
             fillPlane(dst[3], dstStride[3], length, height, lastDstY, 255);
     }
@@ -529,8 +517,6 @@ static int swscale(SwsContext *c, const uint8_t *src[],
 
     /* store changed local vars back in the context */
     c->dstY         = dstY;
-    c->lumBufIndex  = lumBufIndex;
-    c->chrBufIndex  = chrBufIndex;
     c->lastInLumBuf = lastInLumBuf;
     c->lastInChrBuf = lastInChrBuf;
 
@@ -572,7 +558,6 @@ static av_cold void sws_init_swscale(SwsContext *c)
 
     ff_sws_init_input_funcs(c);
 
-
     if (c->srcBpc == 8) {
         if (c->dstBpc <= 14) {
             c->hyScale = c->hcScale = hScale8To15_c;
@@ -790,8 +775,6 @@ int attribute_align_arg sws_scale(struct SwsContext *c,
     }
 
     if (c->gamma_flag && c->cascaded_context[0]) {
-
-
         ret = sws_scale(c->cascaded_context[0],
                     srcSlice, srcStride, srcSliceY, srcSliceH,
                     c->cascaded_tmp, c->cascaded_tmpStride);
@@ -985,7 +968,6 @@ int attribute_align_arg sws_scale(struct SwsContext *c,
         c->sliceDir = 0;
     ret = c->swscale(c, src2, srcStride2, srcSliceY_internal, srcSliceH, dst2, dstStride2);
 
-
     if (c->dstXYZ && !(c->srcXYZ && c->srcW==c->dstW && c->srcH==c->dstH)) {
         int dstY = c->dstY ? c->dstY : srcSliceY + srcSliceH;
         uint16_t *dst16 = (uint16_t*)(dst2[0] + (dstY - ret) * dstStride2[0]);