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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
commit36d22d82aa202bb199967e9512281e9a53db42c9 (patch)
tree105e8c98ddea1c1e4784a60a5a6410fa416be2de /media/ffvpx/libavcodec/videodsp_template.c
parentInitial commit. (diff)
downloadfirefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz
firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'media/ffvpx/libavcodec/videodsp_template.c')
-rw-r--r--media/ffvpx/libavcodec/videodsp_template.c105
1 files changed, 105 insertions, 0 deletions
diff --git a/media/ffvpx/libavcodec/videodsp_template.c b/media/ffvpx/libavcodec/videodsp_template.c
new file mode 100644
index 0000000000..d653f4d524
--- /dev/null
+++ b/media/ffvpx/libavcodec/videodsp_template.c
@@ -0,0 +1,105 @@
+/*
+ * Copyright (c) 2002-2012 Michael Niedermayer
+ * Copyright (C) 2012 Ronald S. Bultje
+ *
+ * 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 "bit_depth_template.c"
+#if BIT_DEPTH != 8
+// ff_emulated_edge_mc_8 is used by the x86 MpegVideoDSP API.
+static
+#endif
+void FUNC(ff_emulated_edge_mc)(uint8_t *buf, const uint8_t *src,
+ ptrdiff_t buf_linesize,
+ ptrdiff_t src_linesize,
+ int block_w, int block_h,
+ int src_x, int src_y, int w, int h)
+{
+ int x, y;
+ int start_y, start_x, end_y, end_x;
+
+ if (!w || !h)
+ return;
+
+ av_assert2(block_w * sizeof(pixel) <= FFABS(buf_linesize));
+
+ if (src_y >= h) {
+ src -= src_y * src_linesize;
+ src += (h - 1) * src_linesize;
+ src_y = h - 1;
+ } else if (src_y <= -block_h) {
+ src -= src_y * src_linesize;
+ src += (1 - block_h) * src_linesize;
+ src_y = 1 - block_h;
+ }
+ if (src_x >= w) {
+ // The subtracted expression has an unsigned type and must thus not be negative
+ src -= (1 + src_x - w) * sizeof(pixel);
+ src_x = w - 1;
+ } else if (src_x <= -block_w) {
+ src += (1 - block_w - src_x) * sizeof(pixel);
+ src_x = 1 - block_w;
+ }
+
+ start_y = FFMAX(0, -src_y);
+ start_x = FFMAX(0, -src_x);
+ end_y = FFMIN(block_h, h-src_y);
+ end_x = FFMIN(block_w, w-src_x);
+ av_assert2(start_y < end_y && block_h);
+ av_assert2(start_x < end_x && block_w);
+
+ w = end_x - start_x;
+ src += start_y * src_linesize + start_x * (ptrdiff_t)sizeof(pixel);
+ buf += start_x * sizeof(pixel);
+
+ // top
+ for (y = 0; y < start_y; y++) {
+ memcpy(buf, src, w * sizeof(pixel));
+ buf += buf_linesize;
+ }
+
+ // copy existing part
+ for (; y < end_y; y++) {
+ memcpy(buf, src, w * sizeof(pixel));
+ src += src_linesize;
+ buf += buf_linesize;
+ }
+
+ // bottom
+ src -= src_linesize;
+ for (; y < block_h; y++) {
+ memcpy(buf, src, w * sizeof(pixel));
+ buf += buf_linesize;
+ }
+
+ buf -= block_h * buf_linesize + start_x * (ptrdiff_t)sizeof(pixel);
+ while (block_h--) {
+ pixel *bufp = (pixel *) buf;
+
+ // left
+ for(x = 0; x < start_x; x++) {
+ bufp[x] = bufp[start_x];
+ }
+
+ // right
+ for (x = end_x; x < block_w; x++) {
+ bufp[x] = bufp[end_x - 1];
+ }
+ buf += buf_linesize;
+ }
+}