avcodec/mpegvideodsp: Make MpegVideoDSP MPEG-4 only

It is only used by gmc/gmc1 which is only used by the MPEG-4
decoder, so move it to Mpeg4DecContext and rename it
to Mpeg4VideoDSP. Also compile it iff the MPEG-4 decoder is compiled.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

1 files changed, 0 insertions, 120 deletions

diff --git a/libavcodec/mpegvideodsp.c b/libavcodec/mpegvideodsp.c
deleted file mode 100644
index 05893d0e01..0000000000
--- a/libavcodec/mpegvideodsp.c
+++ /dev/null
@@ -1,120 +0,0 @@
-/*
- * 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 "config.h"
-#include "libavutil/attributes.h"
-#include "libavutil/common.h"
-#include "mpegvideodsp.h"
-
-static void gmc1_c(uint8_t *dst, const uint8_t *src, int stride, int h,
-                   int x16, int y16, int rounder)
-{
-    const int A = (16 - x16) * (16 - y16);
-    const int B = (x16)      * (16 - y16);
-    const int C = (16 - x16) * (y16);
-    const int D = (x16)      * (y16);
-    int i;
-
-    for (i = 0; i < h; i++) {
-        dst[0] = (A * src[0] + B * src[1] + C * src[stride + 0] + D * src[stride + 1] + rounder) >> 8;
-        dst[1] = (A * src[1] + B * src[2] + C * src[stride + 1] + D * src[stride + 2] + rounder) >> 8;
-        dst[2] = (A * src[2] + B * src[3] + C * src[stride + 2] + D * src[stride + 3] + rounder) >> 8;
-        dst[3] = (A * src[3] + B * src[4] + C * src[stride + 3] + D * src[stride + 4] + rounder) >> 8;
-        dst[4] = (A * src[4] + B * src[5] + C * src[stride + 4] + D * src[stride + 5] + rounder) >> 8;
-        dst[5] = (A * src[5] + B * src[6] + C * src[stride + 5] + D * src[stride + 6] + rounder) >> 8;
-        dst[6] = (A * src[6] + B * src[7] + C * src[stride + 6] + D * src[stride + 7] + rounder) >> 8;
-        dst[7] = (A * src[7] + B * src[8] + C * src[stride + 7] + D * src[stride + 8] + rounder) >> 8;
-        dst   += stride;
-        src   += stride;
-    }
-}
-
-void ff_gmc_c(uint8_t *dst, const uint8_t *src, int stride, int h, int ox, int oy,
-              int dxx, int dxy, int dyx, int dyy, int shift, int r,
-              int width, int height)
-{
-    int y, vx, vy;
-    const int s = 1 << shift;
-
-    width--;
-    height--;
-
-    for (y = 0; y < h; y++) {
-        int x;
-
-        vx = ox;
-        vy = oy;
-        for (x = 0; x < 8; x++) { // FIXME: optimize
-            int index;
-            int src_x  = vx >> 16;
-            int src_y  = vy >> 16;
-            int frac_x = src_x & (s - 1);
-            int frac_y = src_y & (s - 1);
-
-            src_x >>= shift;
-            src_y >>= shift;
-
-            if ((unsigned) src_x < width) {
-                if ((unsigned) src_y < height) {
-                    index = src_x + src_y * stride;
-                    dst[y * stride + x] =
-                        ((src[index]                        * (s - frac_x) +
-                          src[index + 1]          * frac_x) * (s - frac_y) +
-                         (src[index + stride]               * (s - frac_x) +
-                          src[index + stride + 1] * frac_x) *      frac_y  +
-                         r) >> (shift * 2);
-                } else {
-                    index = src_x + av_clip(src_y, 0, height) * stride;
-                    dst[y * stride + x] =
-                        ((src[index]               * (s - frac_x) +
-                          src[index + 1] * frac_x) *  s           +
-                         r) >> (shift * 2);
-                }
-            } else {
-                if ((unsigned) src_y < height) {
-                    index = av_clip(src_x, 0, width) + src_y * stride;
-                    dst[y * stride + x] =
-                        ((src[index]                    * (s - frac_y) +
-                          src[index + stride] * frac_y) *  s           +
-                         r) >> (shift * 2);
-                } else {
-                    index = av_clip(src_x, 0, width) +
-                            av_clip(src_y, 0, height) * stride;
-                    dst[y * stride + x] = src[index];
-                }
-            }
-
-            vx += dxx;
-            vy += dyx;
-        }
-        ox += dxy;
-        oy += dyy;
-    }
-}
-
-av_cold void ff_mpegvideodsp_init(MpegVideoDSPContext *c)
-{
-    c->gmc1 = gmc1_c;
-    c->gmc  = ff_gmc_c;
-
-#if ARCH_PPC
-    ff_mpegvideodsp_init_ppc(c);
-#elif ARCH_X86
-    ff_mpegvideodsp_init_x86(c);
-#endif
-}