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			54 lines
		
	
	
		
			1.4 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			54 lines
		
	
	
		
			1.4 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
| /*
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|  * This file is part of Libav.
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|  *
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|  * Libav is free software; you can redistribute it and/or
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|  * modify it under the terms of the GNU Lesser General Public
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|  * License as published by the Free Software Foundation; either
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|  * version 2.1 of the License, or (at your option) any later version.
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|  *
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|  * Libav is distributed in the hope that it will be useful,
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|  * but WITHOUT ANY WARRANTY; without even the implied warranty of
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|  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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|  * Lesser General Public License for more details.
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|  *
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|  * You should have received a copy of the GNU Lesser General Public
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|  * License along with Libav; if not, write to the Free Software
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|  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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|  */
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| 
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| /**
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|  * @file
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|  * null audio source
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|  */
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| 
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| #include <inttypes.h>
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| #include <stdio.h>
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| 
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| #include "libavutil/channel_layout.h"
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| #include "libavutil/internal.h"
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| #include "avfilter.h"
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| #include "internal.h"
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| 
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| static int request_frame(AVFilterLink *link)
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| {
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|     return AVERROR_EOF;
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| }
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| 
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| static const AVFilterPad avfilter_asrc_anullsrc_outputs[] = {
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|     {
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|         .name          = "default",
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|         .type          = AVMEDIA_TYPE_AUDIO,
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|         .request_frame = request_frame,
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|     },
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|     { NULL }
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| };
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| 
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| AVFilter ff_asrc_anullsrc = {
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|     .name        = "anullsrc",
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|     .description = NULL_IF_CONFIG_SMALL("Null audio source, never return audio frames."),
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| 
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|     .inputs      = NULL,
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| 
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|     .outputs     = avfilter_asrc_anullsrc_outputs,
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| };
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