| /* GStreamer |
| * Copyright (C) <2011> 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_INFO_H__ |
| #define __GST_VIDEO_INFO_H__ |
| |
| #include <gst/gst.h> |
| #include <gst/video/video-format.h> |
| #include <gst/video/video-color.h> |
| |
| G_BEGIN_DECLS |
| |
| #include <gst/video/video-enumtypes.h> |
| |
| typedef struct _GstVideoInfo GstVideoInfo; |
| |
| /** |
| * GstVideoInterlaceMode: |
| * @GST_VIDEO_INTERLACE_MODE_PROGRESSIVE: all frames are progressive |
| * @GST_VIDEO_INTERLACE_MODE_INTERLEAVED: 2 fields are interleaved in one video |
| * frame. Extra buffer flags describe the field order. |
| * @GST_VIDEO_INTERLACE_MODE_MIXED: frames contains both interlaced and |
| * progressive video, the buffer flags describe the frame and fields. |
| * @GST_VIDEO_INTERLACE_MODE_FIELDS: 2 fields are stored in one buffer, use the |
| * frame ID to get access to the required field. For multiview (the |
| * 'views' property > 1) the fields of view N can be found at frame ID |
| * (N * 2) and (N * 2) + 1. |
| * Each field has only half the amount of lines as noted in the |
| * height property. This mode requires multiple GstVideoMeta metadata |
| * to describe the fields. |
| * |
| * The possible values of the #GstVideoInterlaceMode describing the interlace |
| * mode of the stream. |
| */ |
| typedef enum { |
| GST_VIDEO_INTERLACE_MODE_PROGRESSIVE = 0, |
| GST_VIDEO_INTERLACE_MODE_INTERLEAVED, |
| GST_VIDEO_INTERLACE_MODE_MIXED, |
| GST_VIDEO_INTERLACE_MODE_FIELDS |
| } GstVideoInterlaceMode; |
| |
| const gchar * gst_video_interlace_mode_to_string (GstVideoInterlaceMode mode); |
| GstVideoInterlaceMode gst_video_interlace_mode_from_string (const gchar * mode); |
| |
| /** |
| * GstVideoFlags: |
| * @GST_VIDEO_FLAG_NONE: no flags |
| * @GST_VIDEO_FLAG_VARIABLE_FPS: a variable fps is selected, fps_n and fps_d |
| * denote the maximum fps of the video |
| * @GST_VIDEO_FLAG_PREMULTIPLIED_ALPHA: Each color has been scaled by the alpha |
| * value. |
| * |
| * Extra video flags |
| */ |
| typedef enum { |
| GST_VIDEO_FLAG_NONE = 0, |
| GST_VIDEO_FLAG_VARIABLE_FPS = (1 << 0), |
| GST_VIDEO_FLAG_PREMULTIPLIED_ALPHA = (1 << 1) |
| } GstVideoFlags; |
| |
| /** |
| * GstVideoInfo: |
| * @finfo: the format info of the video |
| * @interlace_mode: the interlace mode |
| * @flags: additional video flags |
| * @width: the width of the video |
| * @height: the height of the video |
| * @views: the number of views for multiview video |
| * @size: the default size of one frame |
| * @chroma_site: a #GstVideoChromaSite. |
| * @colorimetry: the colorimetry info |
| * @par_n: the pixel-aspect-ratio numerator |
| * @par_d: the pixel-aspect-ratio demnominator |
| * @fps_n: the framerate numerator |
| * @fps_d: the framerate demnominator |
| * @offset: offsets of the planes |
| * @stride: strides of the planes |
| * |
| * Information describing image properties. This information can be filled |
| * in from GstCaps with gst_video_info_from_caps(). The information is also used |
| * to store the specific video info when mapping a video frame with |
| * gst_video_frame_map(). |
| * |
| * Use the provided macros to access the info in this structure. |
| */ |
| struct _GstVideoInfo { |
| const GstVideoFormatInfo *finfo; |
| |
| GstVideoInterlaceMode interlace_mode; |
| GstVideoFlags flags; |
| gint width; |
| gint height; |
| gsize size; |
| gint views; |
| |
| GstVideoChromaSite chroma_site; |
| GstVideoColorimetry colorimetry; |
| |
| gint par_n; |
| gint par_d; |
| gint fps_n; |
| gint fps_d; |
| |
| gsize offset[GST_VIDEO_MAX_PLANES]; |
| gint stride[GST_VIDEO_MAX_PLANES]; |
| |
| /*< private >*/ |
| gpointer _gst_reserved[GST_PADDING]; |
| }; |
| |
| /* general info */ |
| #define GST_VIDEO_INFO_FORMAT(i) (GST_VIDEO_FORMAT_INFO_FORMAT((i)->finfo)) |
| #define GST_VIDEO_INFO_NAME(i) (GST_VIDEO_FORMAT_INFO_NAME((i)->finfo)) |
| #define GST_VIDEO_INFO_IS_YUV(i) (GST_VIDEO_FORMAT_INFO_IS_YUV((i)->finfo)) |
| #define GST_VIDEO_INFO_IS_RGB(i) (GST_VIDEO_FORMAT_INFO_IS_RGB((i)->finfo)) |
| #define GST_VIDEO_INFO_IS_GRAY(i) (GST_VIDEO_FORMAT_INFO_IS_GRAY((i)->finfo)) |
| #define GST_VIDEO_INFO_HAS_ALPHA(i) (GST_VIDEO_FORMAT_INFO_HAS_ALPHA((i)->finfo)) |
| |
| #define GST_VIDEO_INFO_INTERLACE_MODE(i) ((i)->interlace_mode) |
| #define GST_VIDEO_INFO_IS_INTERLACED(i) ((i)->interlace_mode != GST_VIDEO_INTERLACE_MODE_PROGRESSIVE) |
| #define GST_VIDEO_INFO_FLAGS(i) ((i)->flags) |
| #define GST_VIDEO_INFO_WIDTH(i) ((i)->width) |
| #define GST_VIDEO_INFO_HEIGHT(i) ((i)->height) |
| #define GST_VIDEO_INFO_SIZE(i) ((i)->size) |
| #define GST_VIDEO_INFO_VIEWS(i) ((i)->views) |
| #define GST_VIDEO_INFO_PAR_N(i) ((i)->par_n) |
| #define GST_VIDEO_INFO_PAR_D(i) ((i)->par_d) |
| #define GST_VIDEO_INFO_FPS_N(i) ((i)->fps_n) |
| #define GST_VIDEO_INFO_FPS_D(i) ((i)->fps_d) |
| |
| #define GST_VIDEO_INFO_COLORIMETRY(i) ((i)->colorimetry) |
| #define GST_VIDEO_INFO_CHROMA_SITE(i) ((i)->chroma_site) |
| |
| /* dealing with GstVideoInfo flags */ |
| #define GST_VIDEO_INFO_FLAG_IS_SET(i,flag) ((GST_VIDEO_INFO_FLAGS(i) & (flag)) == (flag)) |
| #define GST_VIDEO_INFO_FLAG_SET(i,flag) (GST_VIDEO_INFO_FLAGS(i) |= (flag)) |
| #define GST_VIDEO_INFO_FLAG_UNSET(i,flag) (GST_VIDEO_INFO_FLAGS(i) &= ~(flag)) |
| |
| /* dealing with planes */ |
| #define GST_VIDEO_INFO_N_PLANES(i) (GST_VIDEO_FORMAT_INFO_N_PLANES((i)->finfo)) |
| #define GST_VIDEO_INFO_PLANE_OFFSET(i,p) ((i)->offset[p]) |
| #define GST_VIDEO_INFO_PLANE_STRIDE(i,p) ((i)->stride[p]) |
| |
| /* dealing with components */ |
| #define GST_VIDEO_INFO_N_COMPONENTS(i) GST_VIDEO_FORMAT_INFO_N_COMPONENTS((i)->finfo) |
| #define GST_VIDEO_INFO_COMP_DEPTH(i,c) GST_VIDEO_FORMAT_INFO_DEPTH((i)->finfo,(c)) |
| #define GST_VIDEO_INFO_COMP_DATA(i,d,c) GST_VIDEO_FORMAT_INFO_DATA((i)->finfo,d,(c)) |
| #define GST_VIDEO_INFO_COMP_OFFSET(i,c) GST_VIDEO_FORMAT_INFO_OFFSET((i)->finfo,(i)->offset,(c)) |
| #define GST_VIDEO_INFO_COMP_STRIDE(i,c) GST_VIDEO_FORMAT_INFO_STRIDE((i)->finfo,(i)->stride,(c)) |
| #define GST_VIDEO_INFO_COMP_WIDTH(i,c) GST_VIDEO_FORMAT_INFO_SCALE_WIDTH((i)->finfo,(c),(i)->width) |
| #define GST_VIDEO_INFO_COMP_HEIGHT(i,c) GST_VIDEO_FORMAT_INFO_SCALE_HEIGHT((i)->finfo,(c),(i)->height) |
| #define GST_VIDEO_INFO_COMP_PLANE(i,c) GST_VIDEO_FORMAT_INFO_PLANE((i)->finfo,(c)) |
| #define GST_VIDEO_INFO_COMP_PSTRIDE(i,c) GST_VIDEO_FORMAT_INFO_PSTRIDE((i)->finfo,(c)) |
| #define GST_VIDEO_INFO_COMP_POFFSET(i,c) GST_VIDEO_FORMAT_INFO_POFFSET((i)->finfo,(c)) |
| |
| void gst_video_info_init (GstVideoInfo *info); |
| |
| void gst_video_info_set_format (GstVideoInfo *info, GstVideoFormat format, |
| guint width, guint height); |
| |
| gboolean gst_video_info_from_caps (GstVideoInfo *info, const GstCaps * caps); |
| |
| GstCaps * gst_video_info_to_caps (GstVideoInfo *info); |
| |
| gboolean gst_video_info_convert (GstVideoInfo *info, |
| GstFormat src_format, |
| gint64 src_value, |
| GstFormat dest_format, |
| gint64 *dest_value); |
| gboolean gst_video_info_is_equal (const GstVideoInfo *info, |
| const GstVideoInfo *other); |
| |
| #include <gst/video/video.h> |
| |
| void gst_video_info_align (GstVideoInfo * info, GstVideoAlignment * align); |
| |
| |
| G_END_DECLS |
| |
| #endif /* __GST_VIDEO_INFO_H__ */ |
