dsputil: Split off pixel block routines into their own context

2025-10-31 20:42:49 +08:00 · 2014-02-03 14:29:09 -08:00
parent 0569a7e0bd
commit f46bb608d9
26 changed files with 621 additions and 386 deletions
--- a/libavcodec/pixblockdsp.c
+++ b/libavcodec/pixblockdsp.c
@@ -0,0 +1,76 @@
+/*
+ * This file is part of Libav.
+ *
+ * Libav 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.
+ *
+ * Libav 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 Libav; 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 "avcodec.h"
+#include "pixblockdsp.h"
+
+#define BIT_DEPTH 16
+#include "pixblockdsp_template.c"
+#undef BIT_DEPTH
+
+#define BIT_DEPTH 8
+#include "pixblockdsp_template.c"
+
+static void diff_pixels_c(int16_t *restrict block, const uint8_t *s1,
+                          const uint8_t *s2, int stride)
+{
+    int i;
+
+    /* read the pixels */
+    for (i = 0; i < 8; i++) {
+        block[0] = s1[0] - s2[0];
+        block[1] = s1[1] - s2[1];
+        block[2] = s1[2] - s2[2];
+        block[3] = s1[3] - s2[3];
+        block[4] = s1[4] - s2[4];
+        block[5] = s1[5] - s2[5];
+        block[6] = s1[6] - s2[6];
+        block[7] = s1[7] - s2[7];
+        s1      += stride;
+        s2      += stride;
+        block   += 8;
+    }
+}
+
+av_cold void ff_pixblockdsp_init(PixblockDSPContext *c, AVCodecContext *avctx)
+{
+    const unsigned high_bit_depth = avctx->bits_per_raw_sample > 8;
+
+    c->diff_pixels = diff_pixels_c;
+
+    switch (avctx->bits_per_raw_sample) {
+    case 9:
+    case 10:
+        c->get_pixels = get_pixels_16_c;
+        break;
+    default:
+        c->get_pixels = get_pixels_8_c;
+        break;
+    }
+
+    if (ARCH_ARM)
+        ff_pixblockdsp_init_arm(c, avctx, high_bit_depth);
+    if (ARCH_PPC)
+        ff_pixblockdsp_init_ppc(c, avctx, high_bit_depth);
+    if (ARCH_X86)
+        ff_pixblockdsp_init_x86(c, avctx, high_bit_depth);
+}