early-access version 1432

2021-02-09 04:25:58 +01:00
parent de64eab4b4
commit 3d5a9d908a
7336 changed files with 1773492 additions and 111 deletions
--- a/externals/ffmpeg/libavcodec/huffyuvdsp.c
+++ b/externals/ffmpeg/libavcodec/huffyuvdsp.c
@@ -0,0 +1,91 @@
+/*
+ * 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 <stdint.h>
+
+#include "config.h"
+#include "libavutil/attributes.h"
+#include "mathops.h"
+#include "huffyuvdsp.h"
+
+// 0x00010001 or 0x0001000100010001 or whatever, depending on the cpu's native arithmetic size
+#define pw_1 (ULONG_MAX / UINT16_MAX)
+
+static void add_int16_c(uint16_t *dst, const uint16_t *src, unsigned mask, int w){
+    long i;
+    unsigned long pw_lsb = (mask >> 1) * pw_1;
+    unsigned long pw_msb = pw_lsb +  pw_1;
+    for (i = 0; i <= w - (int)sizeof(long)/2; i += sizeof(long)/2) {
+        long a = *(long*)(src+i);
+        long b = *(long*)(dst+i);
+        *(long*)(dst+i) = ((a&pw_lsb) + (b&pw_lsb)) ^ ((a^b)&pw_msb);
+    }
+    for(; i<w; i++)
+        dst[i] = (dst[i] + src[i]) & mask;
+}
+
+static void add_hfyu_median_pred_int16_c(uint16_t *dst, const uint16_t *src, const uint16_t *diff, unsigned mask, int w, int *left, int *left_top){
+    int i;
+    uint16_t l, lt;
+
+    l  = *left;
+    lt = *left_top;
+
+    for(i=0; i<w; i++){
+        l  = (mid_pred(l, src[i], (l + src[i] - lt) & mask) + diff[i]) & mask;
+        lt = src[i];
+        dst[i] = l;
+    }
+
+    *left     = l;
+    *left_top = lt;
+}
+
+static void add_hfyu_left_pred_bgr32_c(uint8_t *dst, const uint8_t *src,
+                                       intptr_t w, uint8_t *left)
+{
+    int i;
+    uint8_t r = left[R], g = left[G], b = left[B], a = left[A];
+
+    for (i = 0; i < w; i++) {
+        b += src[4 * i + B];
+        g += src[4 * i + G];
+        r += src[4 * i + R];
+        a += src[4 * i + A];
+
+        dst[4 * i + B] = b;
+        dst[4 * i + G] = g;
+        dst[4 * i + R] = r;
+        dst[4 * i + A] = a;
+    }
+
+    left[B] = b;
+    left[G] = g;
+    left[R] = r;
+    left[A] = a;
+}
+
+av_cold void ff_huffyuvdsp_init(HuffYUVDSPContext *c, enum AVPixelFormat pix_fmt)
+{
+    c->add_int16 = add_int16_c;
+    c->add_hfyu_median_pred_int16 = add_hfyu_median_pred_int16_c;
+    c->add_hfyu_left_pred_bgr32 = add_hfyu_left_pred_bgr32_c;
+
+    if (ARCH_X86)
+        ff_huffyuvdsp_init_x86(c, pix_fmt);
+}