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1 /*
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2 * Copyright (c) 2010 S.N. Hemanth Meenakshisundaram <smeenaks@ucsd.edu>
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3 * This file is part of FFmpeg.
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4 *
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5 * FFmpeg is free software; you can redistribute it and/or
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6 * modify it under the terms of the GNU Lesser General Public
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7 * License as published by the Free Software Foundation; either
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8 * version 2.1 of the License, or (at your option) any later version.
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9 *
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10 * FFmpeg is distributed in the hope that it will be useful,
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11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 * Lesser General Public License for more details.
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14 *
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15 * You should have received a copy of the GNU Lesser General Public
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16 * License along with FFmpeg; if not, write to the Free Software
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17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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18 */
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19
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20 /**
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21 * @file
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22 * null audio filter
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23 */
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24
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25 #include "audio.h"
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26 #include "avfilter.h"
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27 #include "internal.h"
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28 #include "libavutil/internal.h"
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29
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30 static const AVFilterPad avfilter_af_anull_inputs[] = {
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31 {
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32 .name = "default",
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33 .type = AVMEDIA_TYPE_AUDIO,
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34 .get_audio_buffer = ff_null_get_audio_buffer,
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35 },
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36 { NULL }
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37 };
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38
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39 static const AVFilterPad avfilter_af_anull_outputs[] = {
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40 {
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41 .name = "default",
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42 .type = AVMEDIA_TYPE_AUDIO,
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43 },
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44 { NULL }
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45 };
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46
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47 AVFilter avfilter_af_anull = {
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48 .name = "anull",
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49 .description = NULL_IF_CONFIG_SMALL("Pass the source unchanged to the output."),
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50
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51 .priv_size = 0,
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52
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53 .query_formats = ff_query_formats_all,
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54
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55 .inputs = avfilter_af_anull_inputs,
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56
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57 .outputs = avfilter_af_anull_outputs,
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58 };
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