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205 lines
8.5 KiB
C
205 lines
8.5 KiB
C
/*
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* GStreamer
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* Copyright (C) 2012 Matthew Waters <ystreet00@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_GL_MEMORY_H_
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#define _GST_GL_MEMORY_H_
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#include <gst/gst.h>
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#include <gst/gstallocator.h>
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#include <gst/gstmemory.h>
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#include <gst/video/video.h>
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#include <gst/gl/gstglbasebuffer.h>
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#include <gst/gl/gl.h>
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G_BEGIN_DECLS
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#define GST_TYPE_GL_ALLOCATOR (gst_gl_allocator_get_type())
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GType gst_gl_allocator_get_type(void);
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#define GST_IS_GL_ALLOCATOR(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_GL_ALLOCATOR))
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#define GST_IS_GL_ALLOCATOR_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_GL_ALLOCATOR))
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#define GST_GL_ALLOCATOR_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_GL_ALLOCATOR, GstGLAllocatorClass))
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#define GST_GL_ALLOCATOR(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_GL_ALLOCATOR, GstGLAllocator))
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#define GST_GL_ALLOCATOR_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_GL_ALLOCATOR, GstGLAllocatorClass))
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#define GST_GL_ALLOCATOR_CAST(obj) ((GstGLAllocator *)(obj))
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typedef enum _GstGLMemoryTransfer
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{
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/* force a transfer between the texture and the PBO (if available) */
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GST_GL_MEMORY_TRANSFER_NEED_UPLOAD = (1 << 0),
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GST_GL_MEMORY_TRANSFER_NEED_DOWNLOAD = (1 << 1),
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} GstGLMemoryTransfer;
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#define GST_GL_MEMORY_ADD_TRANSFER(mem,state) ((GstGLMemory *)mem)->transfer_state |= state
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#define GST_GL_TEXTURE_TARGET_2D_STR "2D"
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#define GST_GL_TEXTURE_TARGET_RECTANGLE_STR "rectangle"
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#define GST_GL_TEXTURE_TARGET_EXTERNAL_OES_STR "external-oes"
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#define GST_BUFFER_POOL_OPTION_GL_TEXTURE_TARGET_2D "GstBufferPoolOptionGLTextureTarget2D"
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#define GST_BUFFER_POOL_OPTION_GL_TEXTURE_TARGET_RECTANGLE "GstBufferPoolOptionGLTextureTargetRectangle"
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#define GST_BUFFER_POOL_OPTION_GL_TEXTURE_TARGET_EXTERNAL_OES "GstBufferPoolOptionGLTextureTargetExternalOES"
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const gchar * gst_gl_texture_target_to_buffer_pool_option (GstGLTextureTarget target);
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/**
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* GstGLMemory:
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* @mem: the parent object
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* @context: the #GstGLContext to use for GL operations
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* @tex_id: the GL texture id for this memory
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* @tex_target: the GL texture target for this memory
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* @tex_type: the texture type
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* @info: the texture's #GstVideoInfo
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* @valign: data alignment for system memory mapping
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* @plane: data plane in @info
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* @tex_scaling: GL shader scaling parameters for @valign and/or width/height
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*
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* Represents information about a GL texture
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*/
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struct _GstGLMemory
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{
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GstGLBaseBuffer mem;
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guint tex_id;
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GstGLTextureTarget tex_target;
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GstVideoGLTextureType tex_type;
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GstVideoInfo info;
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GstVideoAlignment valign;
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guint plane;
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gfloat tex_scaling[2];
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/* <private> */
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GstGLMemoryTransfer transfer_state;
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gboolean texture_wrapped;
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GDestroyNotify notify;
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gpointer user_data;
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guint unpack_length;
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guint tex_width;
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};
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#define GST_CAPS_FEATURE_MEMORY_GL_MEMORY "memory:GLMemory"
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#define GST_GL_MEMORY_VIDEO_FORMATS_STR \
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"{ RGBA, BGRA, RGBx, BGRx, ARGB, ABGR, xRGB, xBGR, RGB, BGR, RGB16, BGR16, " \
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"AYUV, I420, YV12, NV12, NV21, YUY2, UYVY, Y41B, Y42B, Y444, " \
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"GRAY8, GRAY16_LE, GRAY16_BE }"
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/**
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* GST_GL_MEMORY_ALLOCATOR:
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*
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* The name of the GL memory allocator
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*/
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#define GST_GL_MEMORY_ALLOCATOR "GLMemory"
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void gst_gl_memory_init (void);
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gboolean gst_is_gl_memory (GstMemory * mem);
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GstMemory * gst_gl_memory_alloc (GstGLContext * context,
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GstGLTextureTarget target,
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GstAllocationParams *params,
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GstVideoInfo * info,
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guint plane,
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GstVideoAlignment *valign);
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GstGLMemory * gst_gl_memory_wrapped (GstGLContext * context,
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GstGLTextureTarget target,
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GstVideoInfo * info,
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guint plane,
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GstVideoAlignment *valign,
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gpointer data,
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gpointer user_data,
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GDestroyNotify notify);
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GstGLMemory * gst_gl_memory_wrapped_texture (GstGLContext * context,
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guint texture_id,
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GstGLTextureTarget target,
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GstVideoInfo * info,
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guint plane,
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GstVideoAlignment *valign,
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gpointer user_data,
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GDestroyNotify notify);
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void gst_gl_memory_download_transfer (GstGLMemory * gl_mem);
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void gst_gl_memory_upload_transfer (GstGLMemory * gl_mem);
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gboolean gst_gl_memory_copy_into_texture (GstGLMemory *gl_mem,
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guint tex_id,
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GstGLTextureTarget target,
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GstVideoGLTextureType tex_type,
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gint width,
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gint height,
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gint stride,
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gboolean respecify);
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gboolean gst_gl_memory_setup_buffer (GstGLContext * context,
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GstGLTextureTarget target,
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GstAllocationParams * params,
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GstVideoInfo * info,
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GstVideoAlignment *valign,
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GstBuffer * buffer);
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gboolean gst_gl_memory_setup_wrapped (GstGLContext * context,
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GstGLTextureTarget target,
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GstVideoInfo * info,
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GstVideoAlignment *valign,
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gpointer data[GST_VIDEO_MAX_PLANES],
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GstGLMemory *textures[GST_VIDEO_MAX_PLANES],
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gpointer user_data,
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GDestroyNotify notify);
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gint gst_gl_memory_get_texture_width (GstGLMemory * gl_mem);
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gint gst_gl_memory_get_texture_height (GstGLMemory * gl_mem);
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/* utility functions */
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GstVideoGLTextureType gst_gl_texture_type_from_format (GstGLContext *context,
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GstVideoFormat v_format,
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guint plane);
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guint gst_gl_format_from_gl_texture_type (GstVideoGLTextureType tex_format);
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guint gst_gl_sized_gl_format_from_gl_format_type (GstGLContext * context,
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guint format,
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guint type);
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const gchar * gst_gl_texture_target_to_string (GstGLTextureTarget target);
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GstGLTextureTarget gst_gl_texture_target_from_string (const gchar * str);
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GstGLTextureTarget gst_gl_texture_target_from_gl (guint target);
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guint gst_gl_texture_target_to_gl (GstGLTextureTarget target);
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/**
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* GstGLAllocator
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*
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* Opaque #GstGLAllocator struct
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*/
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struct _GstGLAllocator
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{
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GstGLBaseBufferAllocator parent;
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GstMemoryCopyFunction fallback_mem_copy;
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};
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/**
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* GstGLAllocatorClass:
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*
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* The #GstGLAllocatorClass only contains private data
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*/
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struct _GstGLAllocatorClass
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{
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GstGLBaseBufferAllocatorClass parent_class;
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};
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G_END_DECLS
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#endif /* _GST_GL_MEMORY_H_ */
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