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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
commit | 6bf0a5cb5034a7e684dcc3500e841785237ce2dd (patch) | |
tree | a68f146d7fa01f0134297619fbe7e33db084e0aa /media/ffvpx/libavcodec/videodsp_template.c | |
parent | Initial commit. (diff) | |
download | thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.tar.xz thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.zip |
Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | media/ffvpx/libavcodec/videodsp_template.c | 105 |
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; + } +} |