/usr/include/gstreamer-1.0/gst/video/video-chroma.h is in libgstreamer-plugins-base1.0-dev 1.2.3-1.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 | /* GStreamer
* Copyright (C) <2013> Wim Taymans <wim.taymans@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef __GST_VIDEO_CHROMA_H__
#define __GST_VIDEO_CHROMA_H__
#include <gst/gst.h>
G_BEGIN_DECLS
/**
* GstVideoChromaSite:
* @GST_VIDEO_CHROMA_SITE_UNKNOWN: unknown cositing
* @GST_VIDEO_CHROMA_SITE_NONE: no cositing
* @GST_VIDEO_CHROMA_SITE_H_COSITED: chroma is horizontally cosited
* @GST_VIDEO_CHROMA_SITE_V_COSITED: chroma is vertically cosited
* @GST_VIDEO_CHROMA_SITE_ALT_LINE: choma samples are sited on alternate lines
* @GST_VIDEO_CHROMA_SITE_COSITED: chroma samples cosited with luma samples
* @GST_VIDEO_CHROMA_SITE_JPEG: jpeg style cositing, also for mpeg1 and mjpeg
* @GST_VIDEO_CHROMA_SITE_MPEG2: mpeg2 style cositing
* @GST_VIDEO_CHROMA_SITE_DV: DV style cositing
*
* Various Chroma sitings.
*/
typedef enum {
GST_VIDEO_CHROMA_SITE_UNKNOWN = 0,
GST_VIDEO_CHROMA_SITE_NONE = (1 << 0),
GST_VIDEO_CHROMA_SITE_H_COSITED = (1 << 1),
GST_VIDEO_CHROMA_SITE_V_COSITED = (1 << 2),
GST_VIDEO_CHROMA_SITE_ALT_LINE = (1 << 3),
/* some common chroma cositing */
GST_VIDEO_CHROMA_SITE_COSITED = (GST_VIDEO_CHROMA_SITE_H_COSITED | GST_VIDEO_CHROMA_SITE_V_COSITED),
GST_VIDEO_CHROMA_SITE_JPEG = (GST_VIDEO_CHROMA_SITE_NONE),
GST_VIDEO_CHROMA_SITE_MPEG2 = (GST_VIDEO_CHROMA_SITE_H_COSITED),
GST_VIDEO_CHROMA_SITE_DV = (GST_VIDEO_CHROMA_SITE_COSITED | GST_VIDEO_CHROMA_SITE_ALT_LINE),
} GstVideoChromaSite;
GstVideoChromaSite gst_video_chroma_from_string (const gchar * s);
const gchar * gst_video_chroma_to_string (GstVideoChromaSite site);
/**
* GstVideoChromaMethod:
* @GST_VIDEO_CHROMA_METHOD_NEAREST: Duplicates the chroma samples when
* upsampling and drops when subsampling
* @GST_VIDEO_CHROMA_METHOD_LINEAR: Uses linear interpolation to reconstruct
* missing chroma and averaging to subsample
*
* Different subsampling and upsampling methods
*/
typedef enum {
GST_VIDEO_CHROMA_METHOD_NEAREST,
GST_VIDEO_CHROMA_METHOD_LINEAR
} GstVideoChromaMethod;
/**
* GstVideoChromaFlags:
* @GST_VIDEO_CHROMA_FLAG_NONE: no flags
* @GST_VIDEO_CHROMA_FLAG_INTERLACED: the input is interlaced
*
* Extra flags that influence the result from gst_video_chroma_resample_new().
*/
typedef enum {
GST_VIDEO_CHROMA_FLAG_NONE = 0,
GST_VIDEO_CHROMA_FLAG_INTERLACED = (1 << 0),
} GstVideoChromaFlags;
typedef struct _GstVideoChromaResample GstVideoChromaResample;
/* circular dependency, need to include this after defining the enums */
#include <gst/video/video-format.h>
GstVideoChromaResample * gst_video_chroma_resample_new (GstVideoChromaMethod method,
GstVideoChromaSite site,
GstVideoChromaFlags flags,
GstVideoFormat format,
gint h_factor, gint v_factor);
void gst_video_chroma_resample_free (GstVideoChromaResample *resample);
void gst_video_chroma_resample_get_info (GstVideoChromaResample *resample,
guint * n_lines, gint *offset);
void gst_video_chroma_resample (GstVideoChromaResample *resample,
gpointer lines[], gint width);
G_END_DECLS
#endif /* __GST_VIDEO_CHROMA_H__ */
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