| 1 | /* GStreamer |
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| 2 | * Copyright (C) 2021 Collabora Ltd. |
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| 3 | * Author: Nicolas Dufresne <nicolas.dufresne@collabora.com> |
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| 4 | * |
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| 5 | * This library is free software; you can redistribute it and/or |
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| 6 | * modify it under the terms of the GNU Library General Public |
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| 7 | * License as published by the Free Software Foundation; either |
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| 8 | * version 2 of the License, or (at your option) any later version. |
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| 9 | * |
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| 10 | * This library is distributed in the hope that it will be useful, |
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| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 13 | * Library General Public License for more details. |
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| 14 | * |
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| 15 | * You should have received a copy of the GNU Library General Public |
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| 16 | * License along with this library; if not, write to the |
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| 17 | * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, |
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| 18 | * Boston, MA 02110-1301, USA. |
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| 19 | */ |
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| 20 | |
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| 21 | #ifndef __GST_VIDEO_CODEC_ALPHA_META_H__ |
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| 22 | #define __GST_VIDEO_CODEC_ALPHA_META_H__ |
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| 23 | |
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| 24 | #include <gst/gst.h> |
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| 25 | #include <gst/video/video.h> |
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| 26 | |
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| 27 | G_BEGIN_DECLS |
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| 28 | |
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| 29 | /** |
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| 30 | * GST_VIDEO_CODEC_ALPHA_META_API_TYPE: |
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| 31 | * |
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| 32 | * Since: 1.20 |
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| 33 | */ |
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| 34 | #define GST_VIDEO_CODEC_ALPHA_META_API_TYPE (gst_video_codec_alpha_meta_api_get_type()) |
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| 35 | |
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| 36 | /** |
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| 37 | * GST_VIDEO_CODEC_ALPHA_META_INFO: |
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| 38 | * |
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| 39 | * Since: 1.20 |
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| 40 | */ |
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| 41 | #define GST_VIDEO_CODEC_ALPHA_META_INFO (gst_video_codec_alpha_meta_get_info()) |
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| 42 | |
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| 43 | typedef struct _GstVideoCodecAlphaMeta GstVideoCodecAlphaMeta; |
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| 44 | |
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| 45 | /** |
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| 46 | * GstVideoCodecAlphaMeta: |
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| 47 | * @meta: parent #GstMeta |
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| 48 | * @buffer: the encoded alpha frame |
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| 49 | * |
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| 50 | * Encapsulate an extra frame containing the encoded alpha channel for the |
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| 51 | * currently negotiated CODEC. The streams must be of the same dimention as |
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| 52 | * the original one. |
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| 53 | * |
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| 54 | * Since: 1.20 |
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| 55 | */ |
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| 56 | struct _GstVideoCodecAlphaMeta |
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| 57 | { |
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| 58 | GstMeta meta; |
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| 59 | |
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| 60 | GstBuffer *buffer; |
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| 61 | }; |
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| 62 | |
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| 63 | GST_VIDEO_API |
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| 64 | GType gst_video_codec_alpha_meta_api_get_type (void); |
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| 65 | |
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| 66 | GST_VIDEO_API |
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| 67 | const GstMetaInfo *gst_video_codec_alpha_meta_get_info (void); |
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| 68 | |
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| 69 | /** |
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| 70 | * gst_buffer_get_video_codec_alpha_meta: |
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| 71 | * @b: A #GstBuffer pointer, must be writable. |
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| 72 | * |
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| 73 | * Helper macro to get #GstVideoCodecAlphaMeta from an existing #GstBuffer. |
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| 74 | * |
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| 75 | * Returns: (nullable): the #GstVideoCodecAlphaMeta pointer, or %NULL if none. |
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| 76 | * |
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| 77 | * Since: 1.20 |
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| 78 | */ |
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| 79 | #define gst_buffer_get_video_codec_alpha_meta(b) \ |
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| 80 | ((GstVideoCodecAlphaMeta *)gst_buffer_get_meta((b),GST_VIDEO_CODEC_ALPHA_META_API_TYPE)) |
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| 81 | |
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| 82 | GST_VIDEO_API |
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| 83 | GstVideoCodecAlphaMeta *gst_buffer_add_video_codec_alpha_meta (GstBuffer * buffer, |
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| 84 | GstBuffer * alpha_buffer); |
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| 85 | |
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| 86 | G_END_DECLS |
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| 87 | |
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| 88 | #endif /* __GST_VIDEO_CODEC_ALPHA_META_H__ */ |
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| 89 | |
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