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