| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * DVD-Video subpicture CLUT (Color Lookup Table) utilities | ||
| 3 | * | ||
| 4 | * This file is part of FFmpeg. | ||
| 5 | * | ||
| 6 | * FFmpeg is free software; you can redistribute it and/or | ||
| 7 | * modify it under the terms of the GNU Lesser General Public | ||
| 8 | * License as published by the Free Software Foundation; either | ||
| 9 | * version 2.1 of the License, or (at your option) any later version. | ||
| 10 | * | ||
| 11 | * FFmpeg is distributed in the hope that it will be useful, | ||
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| 14 | * Lesser General Public License for more details. | ||
| 15 | * | ||
| 16 | * You should have received a copy of the GNU Lesser General Public | ||
| 17 | * License along with FFmpeg; if not, write to the Free Software | ||
| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
| 19 | */ | ||
| 20 | |||
| 21 | #include "libavutil/bprint.h" | ||
| 22 | #include "libavutil/colorspace.h" | ||
| 23 | #include "libavutil/common.h" | ||
| 24 | |||
| 25 | #include "dvdclut.h" | ||
| 26 | #include "internal.h" | ||
| 27 | |||
| 28 | ✗ | int ff_dvdclut_palette_extradata_cat(const uint32_t *clut, | |
| 29 | const size_t clut_size, | ||
| 30 | AVCodecParameters *par) | ||
| 31 | { | ||
| 32 | AVBPrint bp; | ||
| 33 | |||
| 34 | ✗ | if (clut_size != FF_DVDCLUT_CLUT_SIZE) | |
| 35 | ✗ | return AVERROR(EINVAL); | |
| 36 | |||
| 37 | ✗ | av_bprint_init(&bp, 0, FF_DVDCLUT_EXTRADATA_SIZE); | |
| 38 | |||
| 39 | ✗ | av_bprintf(&bp, "palette: "); | |
| 40 | |||
| 41 | ✗ | for (int i = 0; i < FF_DVDCLUT_CLUT_LEN; i++) | |
| 42 | ✗ | av_bprintf(&bp, "%06"PRIx32"%s", clut[i], | |
| 43 | i != (FF_DVDCLUT_CLUT_LEN - 1) ? ", " : ""); | ||
| 44 | |||
| 45 | ✗ | av_bprintf(&bp, "\n"); | |
| 46 | |||
| 47 | ✗ | return ff_bprint_to_codecpar_extradata(par, &bp); | |
| 48 | } | ||
| 49 | |||
| 50 | ✗ | int ff_dvdclut_yuv_to_rgb(uint32_t *clut, const size_t clut_size) | |
| 51 | { | ||
| 52 | int y, cb, cr; | ||
| 53 | uint8_t r, g, b; | ||
| 54 | int r_add, g_add, b_add; | ||
| 55 | |||
| 56 | ✗ | if (clut_size != FF_DVDCLUT_CLUT_SIZE) | |
| 57 | ✗ | return AVERROR(EINVAL); | |
| 58 | |||
| 59 | ✗ | for (int i = 0; i < FF_DVDCLUT_CLUT_LEN; i++) { | |
| 60 | ✗ | y = (clut[i] >> 16) & 0xFF; | |
| 61 | ✗ | cr = (clut[i] >> 8) & 0xFF; | |
| 62 | ✗ | cb = clut[i] & 0xFF; | |
| 63 | |||
| 64 | ✗ | YUV_TO_RGB1_CCIR(cb, cr); | |
| 65 | |||
| 66 | ✗ | y = (y - 16) * FIX(255.0 / 219.0); | |
| 67 | ✗ | r = av_clip_uint8((y + r_add - 1024) >> SCALEBITS); | |
| 68 | ✗ | g = av_clip_uint8((y + g_add - 1024) >> SCALEBITS); | |
| 69 | ✗ | b = av_clip_uint8((y + b_add - 1024) >> SCALEBITS); | |
| 70 | |||
| 71 | ✗ | clut[i] = (r << 16) | (g << 8) | b; | |
| 72 | } | ||
| 73 | |||
| 74 | ✗ | return 0; | |
| 75 | } | ||
| 76 |