Merge commit '6b3ef7f080293956b2e5212b83135c6b051212e9'

[ffmpeg] / libswscale / slice.c

diff --git a/libswscale/slice.c b/libswscale/slice.c
index 242367dfd5ab630abd40ff4cb89fa6c189e11714..94841e5776f7be3163f8d20a92229efeb56a43ea 100644 (file)
--- a/libswscale/slice.c
+++ b/libswscale/slice.c
@@ -1,3 +1,23 @@
+/*
+ * Copyright (C) 2015 Pedro Arthur <bygrandao@gmail.com>
+ *
+ * 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"
 
 static void free_lines(SwsSlice *s)
@@ -194,8 +214,10 @@ int ff_init_filters(SwsContext * c)
     int index;
     int num_ydesc;
     int num_cdesc;
+    int num_vdesc = isPlanarYUV(c->dstFormat) && !isGray(c->dstFormat) ? 2 : 1;
     int need_lum_conv = c->lumToYV12 || c->readLumPlanar || c->alpToYV12 || c->readAlpPlanar;
     int need_chr_conv = c->chrToYV12 || c->readChrPlanar;
+    int need_gamma = c->is_internal_gamma;
     int srcIdx, dstIdx;
     int dst_stride = FFALIGN(c->dstW * sizeof(int16_t) + 66, 16);
 
@@ -208,10 +230,10 @@ int ff_init_filters(SwsContext * c)
     num_ydesc = need_lum_conv ? 2 : 1;
     num_cdesc = need_chr_conv ? 2 : 1;
 
-    c->numSlice = FFMAX(num_ydesc, num_cdesc) + 1;
-    c->numDesc = num_ydesc + num_cdesc;
-    c->descIndex[0] = num_ydesc;
-    c->descIndex[1] = num_ydesc + num_cdesc;
+    c->numSlice = FFMAX(num_ydesc, num_cdesc) + 2;
+    c->numDesc = num_ydesc + num_cdesc + num_vdesc + (need_gamma ? 2 : 0);
+    c->descIndex[0] = num_ydesc + (need_gamma ? 1 : 0);
+    c->descIndex[1] = num_ydesc + num_cdesc + (need_gamma ? 1 : 0);
 
 
 
@@ -223,12 +245,13 @@ int ff_init_filters(SwsContext * c)
 
     res = alloc_slice(&c->slice[0], c->srcFormat, c->srcH, c->chrSrcH, c->chrSrcHSubSample, c->chrSrcVSubSample, 0);
     if (res < 0) goto cleanup;
-    for (i = 1; i < c->numSlice-1; ++i) {
+    for (i = 1; i < c->numSlice-2; ++i) {
         res = alloc_slice(&c->slice[i], c->srcFormat, c->vLumFilterSize + MAX_LINES_AHEAD, c->vChrFilterSize + MAX_LINES_AHEAD, c->chrSrcHSubSample, c->chrSrcVSubSample, 0);
         if (res < 0) goto cleanup;
         res = alloc_lines(&c->slice[i], FFALIGN(c->srcW*2+78, 16), c->srcW);
         if (res < 0) goto cleanup;
     }
+    // horizontal scaler output
     res = alloc_slice(&c->slice[i], c->srcFormat, c->vLumFilterSize + MAX_LINES_AHEAD, c->vChrFilterSize + MAX_LINES_AHEAD, c->chrDstHSubSample, c->chrDstVSubSample, 1);
     if (res < 0) goto cleanup;
     res = alloc_lines(&c->slice[i], dst_stride, c->dstW);
@@ -236,12 +259,24 @@ int ff_init_filters(SwsContext * c)
 
     fill_ones(&c->slice[i], dst_stride>>1, c->dstBpc == 16);
 
+    // vertical scaler output
+    ++i;
+    res = alloc_slice(&c->slice[i], c->dstFormat, c->dstH, c->chrDstH, c->chrDstHSubSample, c->chrDstVSubSample, 0);
+    if (res < 0) goto cleanup;
+
     index = 0;
     srcIdx = 0;
     dstIdx = 1;
 
+    if (need_gamma) {
+        res = ff_init_gamma_convert(c->desc + index, c->slice + srcIdx, c->inv_gamma);
+        if (res < 0) goto cleanup;
+        ++index;
+    }
+
     if (need_lum_conv) {
-        ff_init_desc_fmt_convert(&c->desc[index], &c->slice[srcIdx], &c->slice[dstIdx], pal);
+        res = ff_init_desc_fmt_convert(&c->desc[index], &c->slice[srcIdx], &c->slice[dstIdx], pal);
+        if (res < 0) goto cleanup;
         c->desc[index].alpha = c->alpPixBuf != 0;
         ++index;
         srcIdx = dstIdx;
@@ -249,7 +284,8 @@ int ff_init_filters(SwsContext * c)
 
 
     dstIdx = FFMAX(num_ydesc, num_cdesc);
-    ff_init_desc_hscale(&c->desc[index], &c->slice[index], &c->slice[dstIdx], c->hLumFilter, c->hLumFilterPos, c->hLumFilterSize, c->lumXInc);
+    res = ff_init_desc_hscale(&c->desc[index], &c->slice[srcIdx], &c->slice[dstIdx], c->hLumFilter, c->hLumFilterPos, c->hLumFilterSize, c->lumXInc);
+    if (res < 0) goto cleanup;
     c->desc[index].alpha = c->alpPixBuf != 0;
 
 
@@ -258,16 +294,32 @@ int ff_init_filters(SwsContext * c)
         srcIdx = 0;
         dstIdx = 1;
         if (need_chr_conv) {
-            ff_init_desc_cfmt_convert(&c->desc[index], &c->slice[srcIdx], &c->slice[dstIdx], pal);
+            res = ff_init_desc_cfmt_convert(&c->desc[index], &c->slice[srcIdx], &c->slice[dstIdx], pal);
+            if (res < 0) goto cleanup;
             ++index;
             srcIdx = dstIdx;
         }
 
         dstIdx = FFMAX(num_ydesc, num_cdesc);
         if (c->needs_hcscale)
-            ff_init_desc_chscale(&c->desc[index], &c->slice[srcIdx], &c->slice[dstIdx], c->hChrFilter, c->hChrFilterPos, c->hChrFilterSize, c->chrXInc);
+            res = ff_init_desc_chscale(&c->desc[index], &c->slice[srcIdx], &c->slice[dstIdx], c->hChrFilter, c->hChrFilterPos, c->hChrFilterSize, c->chrXInc);
         else
-            ff_init_desc_no_chr(&c->desc[index], &c->slice[srcIdx], &c->slice[dstIdx]);
+            res = ff_init_desc_no_chr(&c->desc[index], &c->slice[srcIdx], &c->slice[dstIdx]);
+        if (res < 0) goto cleanup;
+    }
+
+    ++index;
+    {
+        srcIdx = c->numSlice - 2;
+        dstIdx = c->numSlice - 1;
+        res = ff_init_vscale(c, c->desc + index, c->slice + srcIdx, c->slice + dstIdx);
+        if (res < 0) goto cleanup;
+    }
+
+    ++index;
+    if (need_gamma) {
+        res = ff_init_gamma_convert(c->desc + index, c->slice + dstIdx, c->gamma);
+        if (res < 0) goto cleanup;
     }
 
     return 0;