2 * Filter layer - default implementations
3 * Copyright (c) 2007 Bobby Bingham
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 #include "libavutil/avassert.h"
23 #include "libavutil/audioconvert.h"
24 #include "libavutil/imgutils.h"
25 #include "libavutil/samplefmt.h"
31 static void set_common_formats(AVFilterContext *ctx, AVFilterFormats *fmts,
32 enum AVMediaType type, int offin, int offout)
35 for (i = 0; i < ctx->input_count; i++)
36 if (ctx->inputs[i] && ctx->inputs[i]->type == type)
37 ff_formats_ref(fmts, (AVFilterFormats **)((uint8_t *)ctx->inputs[i]+offout));
39 for (i = 0; i < ctx->output_count; i++)
40 if (ctx->outputs[i] && ctx->outputs[i]->type == type)
41 ff_formats_ref(fmts, (AVFilterFormats **)((uint8_t *)ctx->outputs[i]+offin));
43 if (!fmts->refcount) {
44 av_free(fmts->formats);
50 void avfilter_set_common_pixel_formats(AVFilterContext *ctx, AVFilterFormats *formats)
52 set_common_formats(ctx, formats, AVMEDIA_TYPE_VIDEO,
53 offsetof(AVFilterLink, in_formats),
54 offsetof(AVFilterLink, out_formats));
57 void avfilter_set_common_sample_formats(AVFilterContext *ctx, AVFilterFormats *formats)
59 set_common_formats(ctx, formats, AVMEDIA_TYPE_AUDIO,
60 offsetof(AVFilterLink, in_formats),
61 offsetof(AVFilterLink, out_formats));
64 void avfilter_set_common_channel_layouts(AVFilterContext *ctx, AVFilterFormats *formats)
66 set_common_formats(ctx, formats, AVMEDIA_TYPE_AUDIO,
67 offsetof(AVFilterLink, in_channel_layouts),
68 offsetof(AVFilterLink, out_channel_layouts));
72 void avfilter_set_common_packing_formats(AVFilterContext *ctx, AVFilterFormats *formats)
74 set_common_formats(ctx, formats, AVMEDIA_TYPE_AUDIO,
75 offsetof(AVFilterLink, in_packing),
76 offsetof(AVFilterLink, out_packing));