projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 4f4ee9ee PZ |
1 | /* |
| 2 | * Coda multi-standard codec IP - H.264 helper functions | |
| 3 | * | |
| 4 | * Copyright (C) 2012 Vista Silicon S.L. | |
| 5 | * Javier Martin, <javier.martin@vista-silicon.com> | |
| 6 | * Xavier Duret | |
| 7 | * | |
| 8 | * This program is free software; you can redistribute it and/or modify | |
| 9 | * it under the terms of the GNU General Public License as published by | |
| 10 | * the Free Software Foundation; either version 2 of the License, or | |
| 11 | * (at your option) any later version. | |
| 12 | */ | |
| 13 | ||
| 14 | #include <linux/kernel.h> | |
| 2c3759d4 | 15 | #include <linux/string.h> |
| 4f4ee9ee PZ |
16 | |
| 17 | static const u8 coda_filler_nal[14] = { 0x00, 0x00, 0x00, 0x01, 0x0c, 0xff, | |
| 18 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x80 }; | |
| 19 | static const u8 coda_filler_size[8] = { 0, 7, 14, 13, 12, 11, 10, 9 }; | |
| 20 | ||
| 21 | int coda_h264_padding(int size, char *p) | |
| 22 | { | |
| 23 | int nal_size; | |
| 24 | int diff; | |
| 25 | ||
| 26 | diff = size - (size & ~0x7); | |
| 27 | if (diff == 0) | |
| 28 | return 0; | |
| 29 | ||
| 30 | nal_size = coda_filler_size[diff]; | |
| 31 | memcpy(p, coda_filler_nal, nal_size); | |
| 32 | ||
| 33 | /* Add rbsp stop bit and trailing at the end */ | |
| 34 | *(p + nal_size - 1) = 0x80; | |
| 35 | ||
| 36 | return nal_size; | |
| 37 | } |