38 lines
996 B
C
38 lines
996 B
C
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/*
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* Coda multi-standard codec IP - H.264 helper functions
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*
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* Copyright (C) 2012 Vista Silicon S.L.
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* Javier Martin, <javier.martin@vista-silicon.com>
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* Xavier Duret
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <linux/kernel.h>
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#include <linux/string.h>
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static const u8 coda_filler_nal[14] = { 0x00, 0x00, 0x00, 0x01, 0x0c, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x80 };
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static const u8 coda_filler_size[8] = { 0, 7, 14, 13, 12, 11, 10, 9 };
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int coda_h264_padding(int size, char *p)
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{
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int nal_size;
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int diff;
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diff = size - (size & ~0x7);
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if (diff == 0)
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return 0;
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nal_size = coda_filler_size[diff];
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memcpy(p, coda_filler_nal, nal_size);
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/* Add rbsp stop bit and trailing at the end */
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*(p + nal_size - 1) = 0x80;
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return nal_size;
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}
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