@@ -1,5 +1,6 @@

 # libavcodec tests

 AVCODECOBJS-$(CONFIG_ALAC_DECODER) += alacdsp.o

+AVCODECOBJS-$(CONFIG_BLEND_FILTER) += vf_blend.o

 AVCODECOBJS-$(CONFIG_BSWAPDSP) += bswapdsp.o

 AVCODECOBJS-$(CONFIG_DCA_DECODER) += synth_filter.o

 AVCODECOBJS-$(CONFIG_FLACDSP)  += flacdsp.o

@@ -68,6 +68,9 @@ static const struct {

     #if CONFIG_ALAC_DECODER

         { "alacdsp", checkasm_check_alacdsp },

     #endif

+    #if CONFIG_BLEND_FILTER

+        { "vf_blend", checkasm_check_blend },

+    #endif

     #if CONFIG_BSWAPDSP

         { "bswapdsp", checkasm_check_bswapdsp },

     #endif

@@ -31,6 +31,7 @@

 #include "libavutil/timer.h"

 void checkasm_check_alacdsp(void);

+void checkasm_check_blend(void);

 void checkasm_check_bswapdsp(void);

 void checkasm_check_flacdsp(void);

 void checkasm_check_fmtconvert(void);

new file mode 100644

@@ -0,0 +1,130 @@

+/*

+ * Copyright (c) 2016 Tiancheng "Timothy" Gu

+ *

+ * This file is part of FFmpeg.

+ *

+ * FFmpeg is free software; you can redistribute it and/or modify

+ * it under the terms of the GNU General Public License as published by

+ * the Free Software Foundation; either version 2 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 General Public License for more details.

+ *

+ * You should have received a copy of the GNU 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 <string.h>

+#include "checkasm.h"

+#include "libavfilter/blend.h"

+#include "libavutil/common.h"

+#include "libavutil/internal.h"

+#include "libavutil/intreadwrite.h"

+

+#define WIDTH 256

+#define HEIGHT 256

+#define BUF_UNITS 9

+#define SIZE_PER_UNIT (WIDTH * HEIGHT)

+#define BUF_SIZE (BUF_UNITS * SIZE_PER_UNIT)

+

+#define randomize_buffers()                   \

+    do {                                      \

+        int i, j;                             \

+        for (i = 0; i < HEIGHT; i++) {        \

+            for (j = 0; j < WIDTH; j++) {     \

+                top1[i * WIDTH + j] =         \

+                top2[i * WIDTH + j] = i;      \

+                bot1[i * WIDTH + j] =         \

+                bot2[i * WIDTH + j] = j;      \

+            }                                 \

+        }                                     \

+        for (i = 0; i < SIZE_PER_UNIT; i += 4) { \

+            uint32_t r = rnd();               \

+            AV_WN32A(dst1 + i, r);            \

+            AV_WN32A(dst2 + i, r);            \

+        }                                     \

+        for (; i < BUF_SIZE; i += 4) {        \

+            uint32_t r = rnd();               \

+            AV_WN32A(top1 + i, r);            \

+            AV_WN32A(top2 + i, r);            \

+            r = rnd();                        \

+            AV_WN32A(bot1 + i, r);            \

+            AV_WN32A(bot2 + i, r);            \

+            r = rnd();                        \

+            AV_WN32A(dst1 + i, r);            \

+            AV_WN32A(dst2 + i, r);            \

+        }                                     \

+    } while (0)

+

+#define check_blend_func()                                                                 \

+    do {                                                                                   \

+        int i;                                                                             \

+        declare_func(void, const uint8_t *top, ptrdiff_t top_linesize,                     \

+                     const uint8_t *bottom, ptrdiff_t bottom_linesize,                     \

+                     uint8_t *dst, ptrdiff_t dst_linesize,                                 \

+                     ptrdiff_t width, ptrdiff_t height,                                    \

+                     struct FilterParams *param, double *values);                          \

+                                                                                           \

+        for (i = 0; i < BUF_UNITS - 1; i++) {                                              \

+            int src_offset = i * SIZE_PER_UNIT + i; /* Test various alignments */          \

+            int dst_offset = i * SIZE_PER_UNIT; /* dst must be aligned */                  \

+            randomize_buffers();                                                           \

+            call_ref(top1 + src_offset, WIDTH, bot1 + src_offset, WIDTH,                   \

+                     dst1 + dst_offset, WIDTH, WIDTH, HEIGHT, &param, NULL);               \

+            call_new(top2 + src_offset, WIDTH, bot2 + src_offset, WIDTH,                   \

+                     dst2 + dst_offset, WIDTH, WIDTH, HEIGHT, &param, NULL);               \

+            if (memcmp(top1, top2, BUF_SIZE) || memcmp(bot1, bot2, BUF_SIZE) || memcmp(dst1, dst2, BUF_SIZE)) \

+                fail();                                                                    \

+            bench_new(top2 + src_offset, WIDTH, bot2 + src_offset, WIDTH,                  \

+                      dst2, WIDTH, WIDTH, HEIGHT, &param, NULL);                           \

+        }                                                                                  \

+    } while (0)

+

+void checkasm_check_blend(void)

+{

+    uint8_t *top1 = av_malloc(BUF_SIZE);

+    uint8_t *top2 = av_malloc(BUF_SIZE);

+    uint8_t *bot1 = av_malloc(BUF_SIZE);

+    uint8_t *bot2 = av_malloc(BUF_SIZE);

+    uint8_t *dst1 = av_malloc(BUF_SIZE);

+    uint8_t *dst2 = av_malloc(BUF_SIZE);

+    FilterParams param = {

+        .opacity = 1.0,

+    };

+

+#define check_and_report(name, val)               \

+    param.mode = val;                             \

+    ff_blend_init(&param, 0);                     \

+    if (check_func(param.blend, #name))           \

+        check_blend_func();

+

+    check_and_report(addition, BLEND_ADDITION)

+    check_and_report(addition128, BLEND_ADDITION128)

+    check_and_report(and, BLEND_AND)

+    check_and_report(average, BLEND_AVERAGE)

+    check_and_report(darken, BLEND_DARKEN)

+    check_and_report(difference128, BLEND_DIFFERENCE128)

+    check_and_report(hardmix, BLEND_HARDMIX)

+    check_and_report(lighten, BLEND_LIGHTEN)

+    check_and_report(multiply, BLEND_MULTIPLY)

+    check_and_report(or, BLEND_OR)

+    check_and_report(phoenix, BLEND_PHOENIX)

+    check_and_report(screen, BLEND_SCREEN)

+    check_and_report(subtract, BLEND_SUBTRACT)

+    check_and_report(xor, BLEND_XOR)

+    check_and_report(difference, BLEND_DIFFERENCE)

+    check_and_report(negation, BLEND_NEGATION)

+

+    report("8bit");

+

+    av_freep(&top1);

+    av_freep(&top2);

+    av_freep(&bot1);

+    av_freep(&bot2);

+    av_freep(&dst1);

+    av_freep(&dst2);

+}