lavfi: remove unused defaults.c file

libavfilter/Makefile

@@ -30,7 +30,6 @@ OBJS = allfilters.o                                                     \
        buffer.o                                                         \
        buffersink.o                                                     \
        buffersrc.o                                                      \
-       defaults.o                                                       \
        drawutils.o                                                      \
        formats.o                                                        \
        graphdump.o                                                      \

libavfilter/defaults.c

@@ -1,48 +0,0 @@
-/*
- * Filter layer - default implementations
- * Copyright (c) 2007 Bobby Bingham
- *
- * 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 "libavutil/avassert.h"
-#include "libavutil/audioconvert.h"
-#include "libavutil/imgutils.h"
-#include "libavutil/samplefmt.h"
-
-#include "avfilter.h"
-#include "internal.h"
-#include "formats.h"
-
-static void set_common_formats(AVFilterContext *ctx, AVFilterFormats *fmts,
-                               enum AVMediaType type, int offin, int offout)
-{
-    int i;
-    for (i = 0; i < ctx->input_count; i++)
-        if (ctx->inputs[i] && ctx->inputs[i]->type == type)
-            ff_formats_ref(fmts, (AVFilterFormats **)((uint8_t *)ctx->inputs[i]+offout));
-
-    for (i = 0; i < ctx->output_count; i++)
-        if (ctx->outputs[i] && ctx->outputs[i]->type == type)
-            ff_formats_ref(fmts, (AVFilterFormats **)((uint8_t *)ctx->outputs[i]+offin));
-
-    if (!fmts->refcount) {
-        av_free(fmts->formats);
-        av_free(fmts->refs);
-        av_free(fmts);
-    }
-}