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228 lines
8.5 KiB
C
228 lines
8.5 KiB
C
/* GStreamer
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* Copyright (C) <2011> Wim Taymans <wim.taymans@gmail.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __GST_VIDEO_META_H__
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#define __GST_VIDEO_META_H__
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#include <gst/gst.h>
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#include <gst/video/video.h>
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G_BEGIN_DECLS
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#define GST_VIDEO_META_API_TYPE (gst_video_meta_api_get_type())
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#define GST_VIDEO_META_INFO (gst_video_meta_get_info())
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typedef struct _GstVideoMeta GstVideoMeta;
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#define GST_CAPS_FEATURE_META_GST_VIDEO_META "meta:GstVideoMeta"
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#define GST_VIDEO_CROP_META_API_TYPE (gst_video_crop_meta_api_get_type())
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#define GST_VIDEO_CROP_META_INFO (gst_video_crop_meta_get_info())
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typedef struct _GstVideoCropMeta GstVideoCropMeta;
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/**
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* GstVideoMeta:
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* @meta: parent #GstMeta
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* @buffer: the buffer this metadata belongs to
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* @flags: additional video flags
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* @format: the video format
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* @id: identifier of the frame
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* @width: the video width
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* @height: the video height
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* @n_planes: the number of planes in the image
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* @offset: array of offsets for the planes. This field might not always be
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* valid, it is used by the default implementation of @map.
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* @stride: array of strides for the planes. This field might not always be
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* valid, it is used by the default implementation of @map.
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* @map: map the memory of a plane
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* @unmap: unmap the memory of a plane
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*
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* Extra buffer metadata describing image properties
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*/
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struct _GstVideoMeta {
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GstMeta meta;
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GstBuffer *buffer;
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GstVideoFrameFlags flags;
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GstVideoFormat format;
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gint id;
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guint width;
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guint height;
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guint n_planes;
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gsize offset[GST_VIDEO_MAX_PLANES];
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gint stride[GST_VIDEO_MAX_PLANES];
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gboolean (*map) (GstVideoMeta *meta, guint plane, GstMapInfo *info,
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gpointer *data, gint * stride, GstMapFlags flags);
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gboolean (*unmap) (GstVideoMeta *meta, guint plane, GstMapInfo *info);
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};
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GType gst_video_meta_api_get_type (void);
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const GstMetaInfo * gst_video_meta_get_info (void);
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#define gst_buffer_get_video_meta(b) ((GstVideoMeta*)gst_buffer_get_meta((b),GST_VIDEO_META_API_TYPE))
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GstVideoMeta * gst_buffer_get_video_meta_id (GstBuffer *buffer, gint id);
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GstVideoMeta * gst_buffer_add_video_meta (GstBuffer *buffer, GstVideoFrameFlags flags,
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GstVideoFormat format, guint width, guint height);
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GstVideoMeta * gst_buffer_add_video_meta_full (GstBuffer *buffer, GstVideoFrameFlags flags,
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GstVideoFormat format, guint width, guint height,
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guint n_planes, gsize offset[GST_VIDEO_MAX_PLANES],
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gint stride[GST_VIDEO_MAX_PLANES]);
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gboolean gst_video_meta_map (GstVideoMeta *meta, guint plane, GstMapInfo *info,
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gpointer *data, gint *stride, GstMapFlags flags);
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gboolean gst_video_meta_unmap (GstVideoMeta *meta, guint plane, GstMapInfo *info);
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/**
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* GstVideoCropMeta:
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* @meta: parent #GstMeta
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* @x: the horizontal offset
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* @y: the vertical offset
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* @width: the cropped width
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* @height: the cropped height
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*
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* Extra buffer metadata describing image cropping.
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*/
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struct _GstVideoCropMeta {
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GstMeta meta;
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guint x;
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guint y;
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guint width;
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guint height;
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};
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GType gst_video_crop_meta_api_get_type (void);
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const GstMetaInfo * gst_video_crop_meta_get_info (void);
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#define gst_buffer_get_video_crop_meta(b) ((GstVideoCropMeta*)gst_buffer_get_meta((b),GST_VIDEO_CROP_META_API_TYPE))
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#define gst_buffer_add_video_crop_meta(b) ((GstVideoCropMeta*)gst_buffer_add_meta((b),GST_VIDEO_CROP_META_INFO, NULL))
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/* video metadata transforms */
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GQuark gst_video_meta_transform_scale_get_quark (void);
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/**
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* gst_video_meta_transform_scale:
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*
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* GQuark for the video "gst-video-scale" transform.
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*/
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#define GST_VIDEO_META_TRANSFORM_IS_SCALE(type) ((type) == gst_video_meta_transform_scale_get_quark())
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/**
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* GstVideoMetaTransform:
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* @old_info: the old #GstVideoInfo
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* @new_info: the new #GstVideoInfo
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*
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* Extra data passed to a video transform #GstMetaTransformFunction such as:
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* "gst-video-scale".
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*/
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typedef struct {
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GstVideoInfo *in_info;
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GstVideoInfo *out_info;
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} GstVideoMetaTransform;
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/**
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* GstVideoGLTextureType:
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* @GST_VIDEO_GL_TEXTURE_TYPE_LUMINANCE: Luminance texture, GL_LUMINANCE
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* @GST_VIDEO_GL_TEXTURE_TYPE_LUMINANCE_ALPHA: Luminance-alpha texture, GL_LUMINANCE_ALPHA
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* @GST_VIDEO_GL_TEXTURE_TYPE_RGB16: RGB 565 texture, GL_RGB
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* @GST_VIDEO_GL_TEXTURE_TYPE_RGB: RGB texture, GL_RGB
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* @GST_VIDEO_GL_TEXTURE_TYPE_RGBA: RGBA texture, GL_RGBA
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* @GST_VIDEO_GL_TEXTURE_TYPE_R: R texture, GL_RED_EXT
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* @GST_VIDEO_GL_TEXTURE_TYPE_RG: RG texture, GL_RG_EXT
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*
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* The GL texture type.
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*/
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typedef enum
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{
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GST_VIDEO_GL_TEXTURE_TYPE_LUMINANCE,
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GST_VIDEO_GL_TEXTURE_TYPE_LUMINANCE_ALPHA,
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GST_VIDEO_GL_TEXTURE_TYPE_RGB16,
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GST_VIDEO_GL_TEXTURE_TYPE_RGB,
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GST_VIDEO_GL_TEXTURE_TYPE_RGBA,
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GST_VIDEO_GL_TEXTURE_TYPE_R,
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GST_VIDEO_GL_TEXTURE_TYPE_RG
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} GstVideoGLTextureType;
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/** GstVideoGLTextureOrientation:
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* @GST_VIDEO_GL_TEXTURE_ORIENTATION_X_NORMAL_Y_NORMAL: Top line first in memory, left row first
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* @GST_VIDEO_GL_TEXTURE_ORIENTATION_X_NORMAL_Y_FLIP: Bottom line first in memory, left row first
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* @GST_VIDEO_GL_TEXTURE_ORIENTATION_X_FLIP_Y_NORMAL: Top line first in memory, right row first
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* @GST_VIDEO_GL_TEXTURE_ORIENTATION_X_FLIP_Y_FLIP: Bottom line first in memory, right row first
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*
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* The orientation of the GL texture.
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*/
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typedef enum
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{
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GST_VIDEO_GL_TEXTURE_ORIENTATION_X_NORMAL_Y_NORMAL,
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GST_VIDEO_GL_TEXTURE_ORIENTATION_X_NORMAL_Y_FLIP,
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GST_VIDEO_GL_TEXTURE_ORIENTATION_X_FLIP_Y_NORMAL,
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GST_VIDEO_GL_TEXTURE_ORIENTATION_X_FLIP_Y_FLIP
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} GstVideoGLTextureOrientation;
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#define GST_VIDEO_GL_TEXTURE_UPLOAD_META_API_TYPE (gst_video_gl_texture_upload_meta_api_get_type())
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#define GST_VIDEO_GL_TEXTURE_UPLOAD_META_INFO (gst_video_gl_texture_upload_meta_get_info())
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typedef struct _GstVideoGLTextureUploadMeta GstVideoGLTextureUploadMeta;
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typedef gboolean (*GstVideoGLTextureUpload) (GstVideoGLTextureUploadMeta *meta, guint texture_id[4]);
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#define GST_CAPS_FEATURE_META_GST_VIDEO_GL_TEXTURE_UPLOAD_META "meta:GstVideoGLTextureUploadMeta"
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/**
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* GstVideoGLTextureUploadMeta:
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* @meta: parent #GstMeta
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* @texture_orientation: Orientation of the textures
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* @n_textures: Number of textures that are generated
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* @texture_type: Type of each texture
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*
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* Extra buffer metadata for uploading a buffer to an OpenGL texture
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* ID. The caller of gst_video_gl_texture_upload_meta_upload() must
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* have OpenGL set up and call this from a thread where it is valid
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* to upload something to an OpenGL texture.
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*/
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struct _GstVideoGLTextureUploadMeta {
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GstMeta meta;
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GstVideoGLTextureOrientation texture_orientation;
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guint n_textures;
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GstVideoGLTextureType texture_type[4];
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/* <private> */
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GstBuffer *buffer;
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GstVideoGLTextureUpload upload;
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gpointer user_data;
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GBoxedCopyFunc user_data_copy;
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GBoxedFreeFunc user_data_free;
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};
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#define gst_buffer_get_video_gl_texture_upload_meta(b) ((GstVideoGLTextureUploadMeta*)gst_buffer_get_meta((b),GST_VIDEO_GL_TEXTURE_UPLOAD_META_API_TYPE))
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GstVideoGLTextureUploadMeta * gst_buffer_add_video_gl_texture_upload_meta (GstBuffer *buffer, GstVideoGLTextureOrientation texture_orientation, guint n_textures, GstVideoGLTextureType texture_type[4], GstVideoGLTextureUpload upload, gpointer user_data, GBoxedCopyFunc user_data_copy, GBoxedFreeFunc user_data_free);
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gboolean gst_video_gl_texture_upload_meta_upload (GstVideoGLTextureUploadMeta *meta, guint texture_id[4]);
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GType gst_video_gl_texture_upload_meta_api_get_type (void);
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const GstMetaInfo * gst_video_gl_texture_upload_meta_get_info (void);
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G_END_DECLS
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#endif /* __GST_VIDEO_META_H__ */
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