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|---|---|---|---|
| 1 | /** | ||
| 2 | * Copyright (c) 2016 Neil Birkbeck <neil.birkbeck@gmail.com> | ||
| 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 <stddef.h> | ||
| 22 | #include <stdint.h> | ||
| 23 | #include <string.h> | ||
| 24 | |||
| 25 | #include "mastering_display_metadata.h" | ||
| 26 | #include "mem.h" | ||
| 27 | |||
| 28 | 198 | static void get_defaults(AVMasteringDisplayMetadata *mastering) | |
| 29 | { | ||
| 30 |
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792 | for (int i = 0; i < 3; i++) |
| 31 |
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1782 | for (int j = 0; j < 2; j++) |
| 32 | 1188 | mastering->display_primaries[i][j] = (AVRational) { 0, 1 }; | |
| 33 | 198 | mastering->white_point[0] = | |
| 34 | 198 | mastering->white_point[1] = | |
| 35 | 198 | mastering->min_luminance = | |
| 36 | 198 | mastering->max_luminance = (AVRational) { 0, 1 }; | |
| 37 | 198 | } | |
| 38 | |||
| 39 | 3 | AVMasteringDisplayMetadata *av_mastering_display_metadata_alloc(void) | |
| 40 | { | ||
| 41 | 3 | return av_mastering_display_metadata_alloc_size(NULL); | |
| 42 | } | ||
| 43 | |||
| 44 | 197 | AVMasteringDisplayMetadata *av_mastering_display_metadata_alloc_size(size_t *size) | |
| 45 | { | ||
| 46 | 197 | AVMasteringDisplayMetadata *mastering = av_mallocz(sizeof(AVMasteringDisplayMetadata)); | |
| 47 | |||
| 48 |
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197 | if (size) |
| 49 |
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194 | *size = mastering ? sizeof(*mastering) : 0; |
| 50 | |||
| 51 |
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197 | if (!mastering) |
| 52 | 2 | return NULL; | |
| 53 | |||
| 54 | 195 | get_defaults(mastering); | |
| 55 | |||
| 56 | 195 | return mastering; | |
| 57 | } | ||
| 58 | |||
| 59 | 4 | AVMasteringDisplayMetadata *av_mastering_display_metadata_create_side_data(AVFrame *frame) | |
| 60 | { | ||
| 61 | 4 | AVFrameSideData *side_data = av_frame_new_side_data(frame, | |
| 62 | AV_FRAME_DATA_MASTERING_DISPLAY_METADATA, | ||
| 63 | sizeof(AVMasteringDisplayMetadata)); | ||
| 64 |
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4 | if (!side_data) |
| 65 | 1 | return NULL; | |
| 66 | |||
| 67 | 3 | memset(side_data->data, 0, sizeof(AVMasteringDisplayMetadata)); | |
| 68 | 3 | get_defaults((AVMasteringDisplayMetadata *)side_data->data); | |
| 69 | |||
| 70 | 3 | return (AVMasteringDisplayMetadata *)side_data->data; | |
| 71 | } | ||
| 72 | |||
| 73 | 55 | AVContentLightMetadata *av_content_light_metadata_alloc(size_t *size) | |
| 74 | { | ||
| 75 | 55 | AVContentLightMetadata *metadata = av_mallocz(sizeof(AVContentLightMetadata)); | |
| 76 | |||
| 77 |
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55 | if (size) |
| 78 |
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55 | *size = metadata ? sizeof(*metadata) : 0; |
| 79 | |||
| 80 | 55 | return metadata; | |
| 81 | } | ||
| 82 | |||
| 83 | 4 | AVContentLightMetadata *av_content_light_metadata_create_side_data(AVFrame *frame) | |
| 84 | { | ||
| 85 | 4 | AVFrameSideData *side_data = av_frame_new_side_data(frame, | |
| 86 | AV_FRAME_DATA_CONTENT_LIGHT_LEVEL, | ||
| 87 | sizeof(AVContentLightMetadata)); | ||
| 88 |
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4 | if (!side_data) |
| 89 | 1 | return NULL; | |
| 90 | |||
| 91 | 3 | memset(side_data->data, 0, sizeof(AVContentLightMetadata)); | |
| 92 | |||
| 93 | 3 | return (AVContentLightMetadata *)side_data->data; | |
| 94 | } | ||
| 95 |