reintroduce avpriv_dsputil_init() to maintain ABI until next soname bump

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavcodec/Makefile

@@ -70,7 +70,7 @@ OBJS-$(CONFIG_LLVIDDSP)                += lossless_videodsp.o
 OBJS-$(CONFIG_LPC)                     += lpc.o
 OBJS-$(CONFIG_LSP)                     += lsp.o
 OBJS-$(CONFIG_MDCT)                    += mdct_fixed.o mdct_float.o mdct_fixed_32.o
-OBJS-$(CONFIG_ME_CMP)                  += me_cmp.o
+OBJS-$(CONFIG_ME_CMP)                  += me_cmp.o dsputil_compat.o
 OBJS-$(CONFIG_MPEG_ER)                 += mpeg_er.o
 OBJS-$(CONFIG_MPEGAUDIO)               += mpegaudio.o mpegaudiodata.o   \
                                           mpegaudiodecheader.o

libavcodec/dsputil.h

+/*
+ * DSP utils
+ * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
+ * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * 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
+ */
+
+/**
+ * @file
+ * DSP utils.
+ * This is deprecated
+ */
+
+#ifndef AVCODEC_DSPUTIL_H
+#define AVCODEC_DSPUTIL_H
+
+#include "avcodec.h"
+#include "version.h"
+#include "me_cmp.h"
+
+#if FF_API_DSPUTIL
+
+/* minimum alignment rules ;)
+ * If you notice errors in the align stuff, need more alignment for some ASM code
+ * for some CPU or need to use a function with less aligned data then send a mail
+ * to the ffmpeg-devel mailing list, ...
+ *
+ * !warning These alignments might not match reality, (missing attribute((align))
+ * stuff somewhere possible).
+ * I (Michael) did not check them, these are just the alignments which I think
+ * could be reached easily ...
+ *
+ * !future video codecs might need functions with less strict alignment
+ */
+
+struct MpegEncContext;
+
+/**
+ * DSPContext.
+ */
+typedef struct DSPContext {
+    int (*sum_abs_dctelem)(int16_t *block /* align 16 */);
+
+    me_cmp_func sad[6]; /* identical to pix_absAxA except additional void * */
+    me_cmp_func sse[6];
+    me_cmp_func hadamard8_diff[6];
+    me_cmp_func dct_sad[6];
+    me_cmp_func quant_psnr[6];
+    me_cmp_func bit[6];
+    me_cmp_func rd[6];
+    me_cmp_func vsad[6];
+    me_cmp_func vsse[6];
+    me_cmp_func nsse[6];
+    me_cmp_func w53[6];
+    me_cmp_func w97[6];
+    me_cmp_func dct_max[6];
+    me_cmp_func dct264_sad[6];
+
+    me_cmp_func me_pre_cmp[6];
+    me_cmp_func me_cmp[6];
+    me_cmp_func me_sub_cmp[6];
+    me_cmp_func mb_cmp[6];
+    me_cmp_func ildct_cmp[6]; // only width 16 used
+    me_cmp_func frame_skip_cmp[6]; // only width 8 used
+
+    me_cmp_func pix_abs[2][4];
+} DSPContext;
+
+attribute_deprecated void avpriv_dsputil_init(DSPContext* p, AVCodecContext *avctx);
+
+#endif
+#endif /* AVCODEC_DSPUTIL_H */

libavcodec/dsputil_compat.c

+/*
+ * DSP utils
+ *
+ * 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 "me_cmp.h"
+#include "dsputil.h"
+
+#if FF_API_DSPUTIL
+
+void avpriv_dsputil_init(DSPContext* p, AVCodecContext *avctx)
+{
+    MECmpContext mecc;
+
+    ff_me_cmp_init(&mecc, avctx);
+#define COPY(name) memcpy(&p->name, &mecc.name, sizeof(p->name))
+    COPY(sum_abs_dctelem);
+    COPY(sad);
+    COPY(sse);
+    COPY(hadamard8_diff);
+    COPY(dct_sad);
+    COPY(quant_psnr);
+    COPY(bit);
+    COPY(rd);
+    COPY(vsad);
+    COPY(vsse);
+    COPY(nsse);
+    COPY(w53);
+    COPY(w97);
+    COPY(dct_max);
+    COPY(dct264_sad);
+    COPY(me_pre_cmp);
+    COPY(me_cmp);
+    COPY(me_sub_cmp);
+    COPY(mb_cmp);
+    COPY(ildct_cmp);
+    COPY(frame_skip_cmp);
+    COPY(pix_abs);
+}
+
+#endif

libavcodec/version.h

@@ -141,6 +141,9 @@
 #ifndef FF_API_EMU_EDGE
 #define FF_API_EMU_EDGE          (LIBAVCODEC_VERSION_MAJOR < 56)
 #endif
+#ifndef FF_API_DSPUTIL
+#define FF_API_DSPUTIL           (LIBAVCODEC_VERSION_MAJOR < 56)
+#endif
 #ifndef FF_API_ARCH_SH4
 #define FF_API_ARCH_SH4          (LIBAVCODEC_VERSION_MAJOR < 56)
 #endif

libavfilter/deshake.h

@@ -24,7 +24,7 @@
 
 #include "config.h"
 #include "avfilter.h"
-#include "libavcodec/me_cmp.h"
+#include "libavcodec/dsputil.h"
 #include "transform.h"
 #if CONFIG_OPENCL
 #include "libavutil/opencl.h"
@@ -81,7 +81,7 @@ typedef struct {
     int contrast;              ///< Contrast threshold
     int search;                ///< Motion search method
     AVCodecContext *avctx;
-    MECmpContext c;            ///< Context providing optimized SAD methods
+    DSPContext c;              ///< Context providing optimized SAD methods
     Transform last;            ///< Transform from last frame
     int refcount;              ///< Number of reference frames (defines averaging window)
     FILE *fp;

libavfilter/f_select.c

@@ -35,7 +35,7 @@
 #include "video.h"
 
 #if CONFIG_AVCODEC
-#include "libavcodec/me_cmp.h"
+#include "libavcodec/dsputil.h"
 #endif
 
 static const char *const var_names[] = {
@@ -146,7 +146,7 @@ typedef struct SelectContext {
     int do_scene_detect;            ///< 1 if the expression requires scene detection variables, 0 otherwise
 #if CONFIG_AVCODEC
     AVCodecContext *avctx;          ///< codec context required for the DSPContext (scene detect only)
-    MECmpContext c;                 ///< context providing optimized SAD methods   (scene detect only)
+    DSPContext c;                   ///< context providing optimized SAD methods   (scene detect only)
     double prev_mafd;               ///< previous MAFD                             (scene detect only)
 #endif
     AVFrame *prev_picref; ///< previous frame                            (scene detect only)
@@ -245,7 +245,7 @@ static int config_input(AVFilterLink *inlink)
         select->avctx = avcodec_alloc_context3(NULL);
         if (!select->avctx)
             return AVERROR(ENOMEM);
-        ff_me_cmp_init(&select->c, select->avctx);
+        avpriv_dsputil_init(&select->c, select->avctx);
     }
 #endif
     return 0;

libavfilter/vf_deshake.c

@@ -57,7 +57,7 @@
 #include "libavutil/mem.h"
 #include "libavutil/opt.h"
 #include "libavutil/pixdesc.h"
-#include "libavcodec/me_cmp.h"
+#include "libavcodec/dsputil.h"
 
 #include "deshake.h"
 #include "deshake_opencl.h"
@@ -414,7 +414,7 @@ static int config_props(AVFilterLink *link)
     deshake->last.zoom = 0;
 
     deshake->avctx = avcodec_alloc_context3(NULL);
-    ff_me_cmp_init(&deshake->c, deshake->avctx);
+    avpriv_dsputil_init(&deshake->c, deshake->avctx);
 
     return 0;
 }

libavfilter/vf_mpdecimate.c

@@ -27,7 +27,7 @@
 #include "libavutil/opt.h"
 #include "libavutil/pixdesc.h"
 #include "libavutil/timestamp.h"
-#include "libavcodec/me_cmp.h"
+#include "libavcodec/dsputil.h"
 #include "libavcodec/pixblockdsp.h"
 #include "avfilter.h"
 #include "internal.h"
@@ -49,7 +49,7 @@ typedef struct {
 
     int hsub, vsub;                ///< chroma subsampling values
     AVFrame *ref;                  ///< reference picture
-    MECmpContext mecc;             ///< context providing optimized diff routines
+    DSPContext dspctx;             ///< context providing optimized diff routines
     PixblockDSPContext pdsp;
     AVCodecContext *avctx;         ///< codec context required for the DSPContext
 } DecimateContext;
@@ -76,7 +76,7 @@ static int diff_planes(AVFilterContext *ctx,
                        int w, int h)
 {
     DecimateContext *decimate = ctx->priv;
-    MECmpContext *mecc = &decimate->mecc;
+    DSPContext *dspctx = &decimate->dspctx;
     PixblockDSPContext *pdsp = &decimate->pdsp;
 
     int x, y;
@@ -90,7 +90,7 @@ static int diff_planes(AVFilterContext *ctx,
             pdsp->diff_pixels(block,
                                 cur+x+y*linesize,
                                 ref+x+y*linesize, linesize);
-            d = mecc->sum_abs_dctelem(block);
+            d = dspctx->sum_abs_dctelem(block);
             if (d > decimate->hi)
                 return 1;
             if (d > decimate->lo) {
@@ -143,7 +143,7 @@ static av_cold int init(AVFilterContext *ctx)
     decimate->avctx = avcodec_alloc_context3(NULL);
     if (!decimate->avctx)
         return AVERROR(ENOMEM);
-    ff_me_cmp_init(&decimate->mecc, decimate->avctx);
+    avpriv_dsputil_init(&decimate->dspctx, decimate->avctx);
     ff_pixblockdsp_init(&decimate->pdsp, decimate->avctx);
 
     return 0;