gstreamer/gst-libs/gst/gl/gstglupload.h
Wang Xin-yu (王昕宇) 5168d86d9e [867/906] glupload: Add GRAY8/GRAY16LE/BE upload support to glimagesink
the 16bit data is uploaded as LUMINANCE_ALPHA, then expanded, composed
in shader. value weight is a little complicate, high byte weight is
255*256/65535 (denormalize to [0~255] ,shift to high byte,then normalize
to [0~1]), low byte weight is 255/65535(similar)

https://bugzilla.gnome.org/show_bug.cgi?id=722670
2017-12-09 19:31:33 +00:00

121 lines
3.9 KiB
C

/*
* GStreamer
* Copyright (C) 2012 Matthew Waters <ystree00@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_GL_UPLOAD_H__
#define __GST_GL_UPLOAD_H__
#include <gst/video/video.h>
#include <gst/gstmemory.h>
#include <gst/gl/gstgl_fwd.h>
G_BEGIN_DECLS
GType gst_gl_upload_get_type (void);
#define GST_TYPE_GL_UPLOAD (gst_gl_upload_get_type())
#define GST_GL_UPLOAD(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_GL_UPLOAD,GstGLUpload))
#define GST_GL_UPLOAD_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_GL_DISPLAY,GstGLUploadClass))
#define GST_IS_GL_UPLOAD(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_GL_UPLOAD))
#define GST_IS_GL_UPLOAD_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_GL_UPLOAD))
#define GST_GL_UPLOAD_CAST(obj) ((GstGLUpload*)(obj))
/**
* GstGLUpload
*
* Opaque #GstGLUpload object
*/
struct _GstGLUpload
{
/* <private> */
GObject parent;
GMutex lock;
GstGLContext *context;
/* input data */
GstVideoInfo info;
gpointer data[GST_VIDEO_MAX_PLANES];
gboolean initted;
/* used for the conversion */
GLuint fbo;
GLuint depth_buffer;
GLuint out_texture;
GLuint in_texture[GST_VIDEO_MAX_PLANES];
guint in_width;
guint in_height;
GstGLShader *shader;
GLint shader_attr_position_loc;
GLint shader_attr_texture_loc;
/* <private> */
GstGLUploadPrivate *priv;
gpointer _reserved[GST_PADDING];
};
/**
* GstGLUploadClass:
*
* The #GstGLUploadClass struct only contains private data
*/
struct _GstGLUploadClass
{
GObjectClass object_class;
};
/**
* GST_GL_UPLOAD_FORMATS:
*
* The currently supported formats that can be uploaded
*/
#define GST_GL_UPLOAD_FORMATS "{ RGB, RGBx, RGBA, BGR, BGRx, BGRA, xRGB, " \
"xBGR, ARGB, ABGR, Y444, I420, YV12, Y42B, " \
"Y41B, NV12, NV21, YUY2, UYVY, AYUV, " \
"GRAY8, GRAY16_LE, GRAY16_BE }"
/**
* GST_GL_UPLOAD_VIDEO_CAPS:
*
* The currently supported #GstCaps that can be uploaded
*/
#define GST_GL_UPLOAD_VIDEO_CAPS GST_VIDEO_CAPS_MAKE (GST_GL_UPLOAD_FORMATS)
GstGLUpload * gst_gl_upload_new (GstGLContext * context);
gboolean gst_gl_upload_init_format (GstGLUpload * upload, GstVideoFormat v_format,
guint in_width, guint in_height,
guint out_width, guint out_height);
gboolean gst_gl_upload_add_video_gl_texture_upload_meta (GstGLUpload * upload, GstBuffer * buffer);
gboolean gst_gl_upload_perform_with_buffer (GstGLUpload * upload, GstBuffer * buffer, guint * tex_id);
void gst_gl_upload_release_buffer (GstGLUpload * upload);
gboolean gst_gl_upload_perform_with_memory (GstGLUpload * upload, GstGLMemory * gl_mem);
gboolean gst_gl_upload_perform_with_data (GstGLUpload * upload, GLuint texture_id,
gpointer data[GST_VIDEO_MAX_PLANES]);
gboolean gst_gl_upload_perform_with_gl_texture_upload_meta (GstGLUpload *upload, GstVideoGLTextureUploadMeta *meta, guint texture_id[4]);
G_END_DECLS
#endif /* __GST_GL_UPLOAD_H__ */