+++ /dev/null
-/*
- * GStreamer
- * Copyright (C) 2015 Matthew Waters <matthew@centricular.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.
- */
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include <string.h>
-
-#include "gstglbasebuffer.h"
-#include "gstglutils.h"
-
-/**
- * SECTION:gstglbuffer
- * @short_description: memory subclass for GL buffers
- * @see_also: #GstMemory, #GstAllocator
- *
- * GstGLBaseBuffer is a #GstMemory subclass providing support for the mapping of
- * GL buffers.
- *
- * Data is uploaded or downloaded from the GPU as is necessary.
- */
-
-/* Implementation notes:
- *
- * Currently does not take into account GLES2 differences (no mapbuffer)
- */
-
-#define USING_OPENGL(context) (gst_gl_context_check_gl_version (context, GST_GL_API_OPENGL, 1, 0))
-#define USING_OPENGL3(context) (gst_gl_context_check_gl_version (context, GST_GL_API_OPENGL3, 3, 1))
-#define USING_GLES(context) (gst_gl_context_check_gl_version (context, GST_GL_API_GLES, 1, 0))
-#define USING_GLES2(context) (gst_gl_context_check_gl_version (context, GST_GL_API_GLES2, 2, 0))
-#define USING_GLES3(context) (gst_gl_context_check_gl_version (context, GST_GL_API_GLES2, 3, 0))
-
-/* compatibility definitions... */
-#ifndef GL_MAP_READ_BIT
-#define GL_MAP_READ_BIT 0x0001
-#endif
-#ifndef GL_MAP_WRITE_BIT
-#define GL_MAP_WRITE_BIT 0x0002
-#endif
-#ifndef GL_COPY_READ_BUFFER
-#define GL_COPY_READ_BUFFER 0x8F36
-#endif
-#ifndef GL_COPY_WRITE_BUFFER
-#define GL_COPY_WRITE_BUFFER 0x8F37
-#endif
-
-GST_DEBUG_CATEGORY_STATIC (GST_CAT_GL_BASE_BUFFER);
-#define GST_CAT_DEFUALT GST_CAT_GL_BASE_BUFFER
-
-static GstAllocator *_gl_base_buffer_allocator;
-
-GQuark
-gst_gl_base_buffer_error_quark (void)
-{
- return g_quark_from_static_string ("gst-gl-base-buffer-error-quark");
-}
-
-static gboolean
-_default_create (GstGLBaseBuffer * mem, GError ** error)
-{
- g_set_error (error, GST_GL_BASE_BUFFER_ERROR, GST_GL_BASE_BUFFER_ERROR_FAILED,
- "subclass should define create() vfunc");
-
- g_critical ("subclass should override "
- "GstGLBaseBufferAllocatorClass::create() function");
-
- return FALSE;
-}
-
-struct create_data
-{
- GstGLBaseBuffer *mem;
- gboolean result;
-};
-
-static void
-_mem_create_gl (GstGLContext * context, struct create_data *transfer)
-{
- GstGLBaseBufferAllocatorClass *alloc_class;
- GError *error = NULL;
-
- alloc_class =
- GST_GL_BASE_BUFFER_ALLOCATOR_GET_CLASS (transfer->mem->mem.allocator);
-
- g_return_if_fail (alloc_class->create != NULL);
-
- if ((transfer->result = alloc_class->create (transfer->mem, &error)))
- return;
-
- g_assert (error != NULL);
-
- GST_CAT_ERROR (GST_CAT_GL_BASE_BUFFER, "Failed to create GL buffer: %s",
- error->message);
- g_clear_error (&error);
-}
-
-void
-gst_gl_base_buffer_init (GstGLBaseBuffer * mem, GstAllocator * allocator,
- GstMemory * parent, GstGLContext * context, GstAllocationParams * params,
- gsize size)
-{
- gsize align = gst_memory_alignment, offset = 0, maxsize = size;
- GstMemoryFlags flags = 0;
- struct create_data data;
-
- if (params) {
- flags = params->flags;
- align |= params->align;
- offset = params->prefix;
- maxsize += params->prefix + params->padding + align;
- }
-
- gst_memory_init (GST_MEMORY_CAST (mem), flags, allocator, parent, maxsize,
- align, offset, size);
-
- mem->context = gst_object_ref (context);
- mem->data = NULL;
- mem->alloc_data = NULL;
-
- g_mutex_init (&mem->lock);
-
- data.mem = mem;
-
- gst_gl_context_thread_add (context,
- (GstGLContextThreadFunc) _mem_create_gl, &data);
- if (!data.result) {
- GST_CAT_ERROR (GST_CAT_GL_BASE_BUFFER,
- "Could not create GL buffer with context:%p", context);
- }
-
- GST_CAT_DEBUG (GST_CAT_GL_BASE_BUFFER, "new GL buffer memory:%p size:%"
- G_GSIZE_FORMAT, mem, maxsize);
-}
-
-static gpointer
-_align_data (gpointer data, gsize align, gsize * maxsize)
-{
- guint8 *ret = data;
- gsize aoffset;
-
- /* do alignment */
- if ((aoffset = ((guintptr) ret & align))) {
- aoffset = (align + 1) - aoffset;
- ret += aoffset;
- *maxsize -= aoffset;
- }
-
- return ret;
-}
-
-/* subclass usage only */
-GstGLBaseBuffer *
-gst_gl_base_buffer_alloc_data (GstGLBaseBuffer * gl_mem)
-{
- GstMemory *mem = (GstMemory *) gl_mem;
-
- if (gl_mem->data)
- return gl_mem;
-
- GST_CAT_LOG (GST_CAT_GL_BASE_BUFFER, "%p attempting allocation of data "
- "pointer of size %" G_GSIZE_FORMAT, gl_mem, mem->maxsize);
- gl_mem->alloc_data = g_try_malloc (mem->maxsize);
-
- if (gl_mem->alloc_data == NULL) {
- gst_memory_unref (mem);
- return NULL;
- }
-
- gl_mem->data = _align_data (gl_mem->alloc_data, mem->align, &mem->maxsize);
-
- GST_CAT_DEBUG (GST_CAT_GL_BASE_BUFFER, "%p allocated data pointer alloc %p, "
- "data %p", gl_mem, gl_mem->alloc_data, gl_mem->data);
-
- return gl_mem;
-}
-
-/* XXX: add as API? */
-static gpointer
-gst_gl_base_buffer_cpu_access (GstGLBaseBuffer * mem,
- GstMapInfo * info, gsize size)
-{
- const GstGLFuncs *gl = mem->context->gl_vtable;
- gpointer data, ret;
-
- gst_gl_base_buffer_alloc_data (mem);
- ret = mem->data;
-
- GST_CAT_LOG (GST_CAT_GL_BASE_BUFFER, "mapping id %d size %" G_GSIZE_FORMAT,
- mem->id, size);
-
- /* The extra data pointer indirection/memcpy is needed for coherent across
- * concurrent map()'s in both GL and CPU */
- if (GST_MEMORY_FLAG_IS_SET (mem, GST_GL_BASE_BUFFER_FLAG_NEED_DOWNLOAD)
- && (info->flags & GST_MAP_GL) == 0 && (info->flags & GST_MAP_READ) != 0) {
- gl->BindBuffer (mem->target, mem->id);
-
- if (gl->MapBufferRange) {
- /* FIXME: optionally remove this with a flag and return the
- * glMapBufferRange pointer (requires
- * GL_ARB_buffer_storage/GL4/GL_COHERENT_BIT) */
- guint gl_map_flags = GL_MAP_READ_BIT;
-
- data = gl->MapBufferRange (mem->target, 0, size, gl_map_flags);
-
- if (data)
- memcpy (mem->data, data, size);
-
- gl->UnmapBuffer (mem->target);
- ret = mem->data;
- } else if (gl->GetBufferSubData) {
- gl->GetBufferSubData (mem->target, 0, size, mem->data);
- ret = mem->data;
- } else {
- ret = NULL;
- }
- gl->BindBuffer (mem->target, 0);
- }
-
- return ret;
-}
-
-/* XXX: add as API? */
-static void
-gst_gl_base_buffer_upload_cpu_write (GstGLBaseBuffer * mem, GstMapInfo * info,
- gsize size)
-{
- const GstGLFuncs *gl = mem->context->gl_vtable;
- gpointer data;
-
- if (!mem->data)
- /* no data pointer has been written */
- return;
-
- /* The extra data pointer indirection/memcpy is needed for coherent across
- * concurrent map()'s in both GL and CPU */
- /* FIXME: uploading potentially half-written data for libav pushing READWRITE
- * mapped buffers */
- if (GST_MEMORY_FLAG_IS_SET (mem, GST_GL_BASE_BUFFER_FLAG_NEED_UPLOAD)
- || (mem->map_flags & GST_MAP_WRITE) != 0) {
- gl->BindBuffer (mem->target, mem->id);
-
- if (gl->MapBufferRange) {
- /* FIXME: optionally remove this with a flag and return the
- * glMapBufferRange pointer (requires
- * GL_ARB_buffer_storage/GL4/GL_COHERENT_BIT) */
- guint gl_map_flags = GL_MAP_WRITE_BIT;
-
- data = gl->MapBufferRange (mem->target, 0, size, gl_map_flags);
-
- if (data)
- memcpy (data, mem->data, size);
-
- gl->UnmapBuffer (mem->target);
- } else if (gl->BufferSubData) {
- gl->BufferSubData (mem->target, 0, size, mem->data);
- }
- gl->BindBuffer (mem->target, 0);
- }
-}
-
-static gpointer
-_default_map_buffer (GstGLBaseBuffer * mem, GstMapInfo * info, gsize size)
-{
- if ((info->flags & GST_MAP_GL) != 0) {
- if (info->flags & GST_MAP_READ) {
- gst_gl_base_buffer_upload_cpu_write (mem, info, size);
- }
- return &mem->id;
- } else {
- return gst_gl_base_buffer_cpu_access (mem, info, size);
- }
-
- return NULL;
-}
-
-struct map_data
-{
- GstGLBaseBuffer *mem;
- GstMapInfo *info;
- gsize size;
- gpointer data;
-};
-
-static void
-_map_data_gl (GstGLContext * context, struct map_data *transfer)
-{
- GstGLBaseBufferAllocatorClass *alloc_class;
- GstGLBaseBuffer *mem = transfer->mem;
- GstMapInfo *info = transfer->info;
-
- alloc_class =
- GST_GL_BASE_BUFFER_ALLOCATOR_GET_CLASS (transfer->mem->mem.allocator);
-
- g_return_if_fail (alloc_class->map_buffer != NULL);
-
- g_mutex_lock (&mem->lock);
-
- GST_CAT_LOG (GST_CAT_GL_BASE_BUFFER, "mapping mem %p id %d flags %04x", mem,
- mem->id, info->flags);
-
- /* FIXME: validate map flags based on the memory domain */
- if (mem->map_count++ == 0)
- mem->map_flags = info->flags;
- else {
- /* assert that the flags are a subset of the first map flags */
- g_assert ((((GST_MAP_GL - 1) & info->flags) & mem->map_flags) != 0);
- GST_CAT_LOG (GST_CAT_GL_BASE_BUFFER, "multiple map no %d flags %04x "
- "all flags %04x", mem->map_count, info->flags, mem->map_flags);
- }
-
- if ((info->flags & GST_MAP_GL) != (mem->map_flags & GST_MAP_GL))
- mem->map_flags |= GST_MAP_GL;
-
- if (info->flags & GST_MAP_GL)
- mem->gl_map_count++;
-
- transfer->data = alloc_class->map_buffer (transfer->mem, transfer->info,
- transfer->size);
-
- if (transfer->data) {
- if (info->flags & GST_MAP_GL) {
- if (info->flags & GST_MAP_WRITE)
- GST_MINI_OBJECT_FLAG_SET (mem, GST_GL_BASE_BUFFER_FLAG_NEED_DOWNLOAD);
- GST_MEMORY_FLAG_UNSET (mem, GST_GL_BASE_BUFFER_FLAG_NEED_UPLOAD);
- } else {
- if (info->flags & GST_MAP_WRITE)
- GST_MINI_OBJECT_FLAG_SET (mem, GST_GL_BASE_BUFFER_FLAG_NEED_UPLOAD);
- GST_MEMORY_FLAG_UNSET (mem, GST_GL_BASE_BUFFER_FLAG_NEED_DOWNLOAD);
- }
- }
-
- g_mutex_unlock (&mem->lock);
-}
-
-static gpointer
-_mem_map_full (GstGLBaseBuffer * mem, GstMapInfo * info, gsize size)
-{
- struct map_data transfer;
-
- transfer.mem = mem;
- transfer.info = info;
- transfer.size = size;
- transfer.data = NULL;
-
- gst_gl_context_thread_add (mem->context,
- (GstGLContextThreadFunc) _map_data_gl, &transfer);
-
- return transfer.data;
-}
-
-static void
-_default_unmap_buffer (GstGLBaseBuffer * mem, GstMapInfo * info)
-{
- /* XXX: optimistically transfer data */
-}
-
-struct unmap_data
-{
- GstGLBaseBuffer *mem;
- GstMapInfo *info;
-};
-
-static void
-_unmap_data_gl (GstGLContext * context, struct unmap_data *transfer)
-{
- GstGLBaseBufferAllocatorClass *alloc_class;
- GstGLBaseBuffer *mem = transfer->mem;
- GstMapInfo *info = transfer->info;
-
- alloc_class =
- GST_GL_BASE_BUFFER_ALLOCATOR_GET_CLASS (transfer->mem->mem.allocator);
-
- g_return_if_fail (alloc_class->unmap_buffer != NULL);
-
- g_mutex_lock (&mem->lock);
-
- GST_CAT_LOG (GST_CAT_GL_BASE_BUFFER, "unmapping mem %p id %d flags %04x", mem,
- mem->id, info->flags);
-
- alloc_class->unmap_buffer (transfer->mem, transfer->info);
-
- if (info->flags & GST_MAP_GL && --mem->gl_map_count)
- /* unset the gl flag */
- mem->map_flags &= ~GST_MAP_GL;
-
- if (--mem->map_count <= 0) {
- mem->map_flags = 0;
- }
-
- if (info->flags & GST_MAP_GL) {
- if (info->flags & GST_MAP_WRITE)
- GST_MINI_OBJECT_FLAG_SET (mem, GST_GL_BASE_BUFFER_FLAG_NEED_DOWNLOAD);
- } else {
- if (info->flags & GST_MAP_WRITE)
- GST_MINI_OBJECT_FLAG_SET (mem, GST_GL_BASE_BUFFER_FLAG_NEED_UPLOAD);
- }
-
- g_mutex_unlock (&mem->lock);
-}
-
-static void
-_mem_unmap_full (GstGLBaseBuffer * mem, GstMapInfo * info)
-{
- struct unmap_data transfer;
-
- transfer.mem = mem;
- transfer.info = info;
-
- gst_gl_context_thread_add (mem->context,
- (GstGLContextThreadFunc) _unmap_data_gl, &transfer);
-}
-
-gboolean
-gst_gl_base_buffer_copy_buffer_sub_data (GstGLBaseBuffer * src,
- GstGLBaseBuffer * dest, gssize offset, gssize size)
-{
- const GstGLFuncs *gl = src->context->gl_vtable;
- GstMapInfo sinfo, dinfo;
-
- if (!gl->CopyBufferSubData)
- /* This is GL(ES) 3.0+ only */
- return FALSE;
-
- if (!gst_memory_map ((GstMemory *) src, &sinfo, GST_MAP_READ | GST_MAP_GL)) {
- GST_CAT_WARNING (GST_CAT_GL_BASE_BUFFER,
- "failed to read map source memory %p", src);
- return FALSE;
- }
-
- if (!gst_memory_map ((GstMemory *) dest, &dinfo, GST_MAP_WRITE | GST_MAP_GL)) {
- GST_CAT_WARNING (GST_CAT_GL_BASE_BUFFER,
- "failed to write map destination memory %p", dest);
- gst_memory_unmap ((GstMemory *) src, &sinfo);
- return FALSE;
- }
-
- gl->BindBuffer (GL_COPY_READ_BUFFER, src->id);
- gl->BindBuffer (GL_COPY_WRITE_BUFFER, dest->id);
- gl->CopyBufferSubData (GL_COPY_READ_BUFFER, GL_COPY_WRITE_BUFFER,
- offset, 0, size);
-
- gst_memory_unmap ((GstMemory *) src, &sinfo);
- gst_memory_unmap ((GstMemory *) dest, &dinfo);
-
- return TRUE;
-}
-
-gboolean
-gst_gl_base_buffer_memcpy (GstGLBaseBuffer * src, GstGLBaseBuffer * dest,
- gssize offset, gssize size)
-{
- GstMapInfo sinfo, dinfo;
-
- if (!gst_memory_map ((GstMemory *) src, &sinfo, GST_MAP_READ)) {
- GST_CAT_WARNING (GST_CAT_GL_BASE_BUFFER,
- "could not read map source memory %p", src);
- return FALSE;
- }
-
- if (!gst_memory_map ((GstMemory *) dest, &dinfo, GST_MAP_WRITE)) {
- GST_CAT_WARNING (GST_CAT_GL_BASE_BUFFER,
- "could not write map dest memory %p", dest);
- gst_memory_unmap ((GstMemory *) src, &sinfo);
- return FALSE;
- }
-
- GST_CAT_DEBUG (GST_CAT_GL_BASE_BUFFER,
- "memcpy %" G_GSSIZE_FORMAT " memory %p -> %p", size, src, dest);
- memcpy (dinfo.data, sinfo.data + offset, size);
- gst_memory_unmap ((GstMemory *) dest, &dinfo);
- gst_memory_unmap ((GstMemory *) src, &sinfo);
-
- return TRUE;
-}
-
-static GstGLBaseBuffer *
-_default_copy (GstGLBaseBuffer * src, gssize offset, gssize size)
-{
- return NULL;
-}
-
-struct copy_params
-{
- GstGLBaseBuffer *src;
- GstGLBaseBuffer *dest;
- gssize offset;
- gssize size;
- gboolean result;
-};
-
-static void
-_mem_copy_gl (GstGLContext * context, struct copy_params *transfer)
-{
- GstGLBaseBufferAllocatorClass *alloc_class;
-
- alloc_class =
- GST_GL_BASE_BUFFER_ALLOCATOR_GET_CLASS (transfer->src->mem.allocator);
-
- g_return_if_fail (alloc_class->copy != NULL);
-
- transfer->dest =
- alloc_class->copy (transfer->src, transfer->offset, transfer->size);
-}
-
-static GstMemory *
-_mem_copy (GstGLBaseBuffer * src, gssize offset, gssize size)
-{
- struct copy_params transfer;
-
- transfer.dest = NULL;
- transfer.src = src;
- transfer.offset = offset;
- transfer.size = size;
- if (size == -1 || size > 0)
- gst_gl_context_thread_add (src->context,
- (GstGLContextThreadFunc) _mem_copy_gl, &transfer);
-
- return (GstMemory *) transfer.dest;
-}
-
-static GstMemory *
-_mem_share (GstGLBaseBuffer * mem, gssize offset, gssize size)
-{
- return NULL;
-}
-
-static gboolean
-_mem_is_span (GstGLBaseBuffer * mem1, GstGLBaseBuffer * mem2, gsize * offset)
-{
- return FALSE;
-}
-
-static GstMemory *
-_mem_alloc (GstAllocator * allocator, gsize size, GstAllocationParams * params)
-{
- g_critical ("Subclass should override GstAllocatorClass::alloc() function");
-
- return NULL;
-}
-
-static void
-_default_destroy (GstGLBaseBuffer * mem)
-{
-}
-
-static void
-_destroy_gl_objects (GstGLContext * context, GstGLBaseBuffer * mem)
-{
- GstGLBaseBufferAllocatorClass *alloc_class;
-
- alloc_class = GST_GL_BASE_BUFFER_ALLOCATOR_GET_CLASS (mem->mem.allocator);
-
- g_return_if_fail (alloc_class->destroy != NULL);
-
- alloc_class->destroy (mem);
-}
-
-static void
-_mem_free (GstAllocator * allocator, GstMemory * memory)
-{
- GstGLBaseBuffer *mem = (GstGLBaseBuffer *) memory;
-
- GST_CAT_TRACE (GST_CAT_GL_BASE_BUFFER, "freeing buffer memory:%p id:%u", mem,
- mem->id);
-
- gst_gl_context_thread_add (mem->context,
- (GstGLContextThreadFunc) _destroy_gl_objects, mem);
-
- g_mutex_clear (&mem->lock);
-
- if (mem->alloc_data) {
- g_free (mem->alloc_data);
- mem->alloc_data = NULL;
- }
- mem->data = NULL;
-
- gst_object_unref (mem->context);
-}
-
-G_DEFINE_TYPE (GstGLBaseBufferAllocator, gst_gl_base_buffer_allocator,
- GST_TYPE_ALLOCATOR);
-
-static void
-gst_gl_base_buffer_allocator_class_init (GstGLBaseBufferAllocatorClass * klass)
-{
- GstAllocatorClass *allocator_class = (GstAllocatorClass *) klass;
-
- allocator_class->alloc = _mem_alloc;
- allocator_class->free = _mem_free;
-
- klass->create = _default_create;
- klass->map_buffer = _default_map_buffer;
- klass->unmap_buffer = _default_unmap_buffer;
- klass->copy = _default_copy;
- klass->destroy = _default_destroy;
-}
-
-static void
-gst_gl_base_buffer_allocator_init (GstGLBaseBufferAllocator * allocator)
-{
- GstAllocator *alloc = GST_ALLOCATOR_CAST (allocator);
-
- alloc->mem_type = GST_GL_MEMORY_ALLOCATOR;
- alloc->mem_map_full = (GstMemoryMapFullFunction) _mem_map_full;
- alloc->mem_unmap_full = (GstMemoryUnmapFullFunction) _mem_unmap_full;
- alloc->mem_copy = (GstMemoryCopyFunction) _mem_copy;
- alloc->mem_share = (GstMemoryShareFunction) _mem_share;
- alloc->mem_is_span = (GstMemoryIsSpanFunction) _mem_is_span;
-}
-
-/**
- * gst_gl_base_buffer_init_once:
- *
- * Initializes the GL Buffer allocator. It is safe to call this function
- * multiple times. This must be called before any other GstGLBaseBuffer operation.
- */
-void
-gst_gl_base_buffer_init_once (void)
-{
- static volatile gsize _init = 0;
-
- if (g_once_init_enter (&_init)) {
- GST_DEBUG_CATEGORY_INIT (GST_CAT_GL_BASE_BUFFER, "glbuffer", 0,
- "OpenGL Buffer");
-
- _gl_base_buffer_allocator =
- g_object_new (gst_gl_base_buffer_allocator_get_type (), NULL);
-
- gst_allocator_register (GST_GL_BASE_BUFFER_ALLOCATOR_NAME,
- gst_object_ref (_gl_base_buffer_allocator));
- g_once_init_leave (&_init, 1);
- }
-}
-
-/**
- * gst_is_gl_base_buffer:
- * @mem:a #GstMemory
- *
- * Returns: whether the memory at @mem is a #GstGLBaseBuffer
- */
-gboolean
-gst_is_gl_base_buffer (GstMemory * mem)
-{
- return mem != NULL && mem->allocator != NULL &&
- g_type_is_a (G_OBJECT_TYPE (mem->allocator),
- GST_TYPE_GL_BASE_BUFFER_ALLOCATOR);
-}
+++ /dev/null
-/*
- * GStreamer
- * Copyright (C) 2015 Matthew Waters <matthew@centricular.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_BASE_BUFFER_H_
-#define _GST_GL_BASE_BUFFER_H_
-
-#include <gst/gst.h>
-#include <gst/gstallocator.h>
-#include <gst/gstmemory.h>
-
-#include <gst/gl/gstgl_fwd.h>
-
-G_BEGIN_DECLS
-
-#define GST_TYPE_GL_BASE_BUFFER_ALLOCATOR (gst_gl_base_buffer_allocator_get_type())
-GType gst_gl_base_buffer_allocator_get_type(void);
-
-#define GST_IS_GL_BASE_BUFFER_ALLOCATOR(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_GL_ALLOCATOR))
-#define GST_IS_GL_BASE_BUFFER_ALLOCATOR_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_GL_BASE_BUFFER_ALLOCATOR))
-#define GST_GL_BASE_BUFFER_ALLOCATOR_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_GL_BASE_BUFFER_ALLOCATOR, GstGLBaseBufferAllocatorClass))
-#define GST_GL_BASE_BUFFER_ALLOCATOR(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_GL_BASE_BUFFER_ALLOCATOR, GstGLBaseBufferAllocator))
-#define GST_GL_BASE_BUFFER_ALLOCATOR_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_GL_BASE_BUFFER_ALLOCATOR, GstGLBaseBufferAllocatorClass))
-#define GST_GL_BASE_BUFFER_ALLOCATOR_CAST(obj) ((GstGLBaseBufferAllocator *)(obj))
-
-GQuark gst_gl_base_buffer_error_quark (void);
-#define GST_GL_BASE_BUFFER_ERROR (gst_gl_base_buffer_error_quark ())
-
-typedef enum
-{
- GST_GL_BASE_BUFFER_ERROR_FAILED,
- GST_GL_BASE_BUFFER_ERROR_OLD_LIBS,
- GST_GL_BASE_BUFFER_ERROR_RESOURCE_UNAVAILABLE,
-} GstGLBufferError;
-
-typedef enum
-{
- GST_GL_BASE_BUFFER_FLAG_NEED_DOWNLOAD = (GST_MEMORY_FLAG_LAST << 0),
- GST_GL_BASE_BUFFER_FLAG_NEED_UPLOAD = (GST_MEMORY_FLAG_LAST << 1)
-} GstGLBaseBufferFlags;
-
-/**
- * GST_MAP_GL:
- *
- * Flag indicating that we should map the GL object instead of to system memory.
- *
- * Combining #GST_MAP_GL with #GST_MAP_WRITE has the same semantics as though
- * you are writing to OpenGL. Conversely, combining #GST_MAP_GL with
- * #GST_MAP_READ has the same semantics as though you are reading from OpenGL.
- */
-#define GST_MAP_GL (GST_MAP_FLAG_LAST << 1)
-
-/**
- * GstGLBaseBuffer:
- * @mem: the parent object
- * @context: the #GstGLContext to use for GL operations
- * @id: the buffer id for this memory
- * @target: the GL target of this texture for binding purposes
- *
- * Represents information about a GL buffer
- */
-struct _GstGLBaseBuffer
-{
- GstMemory mem;
-
- GstGLContext *context;
- guint id;
- guint target;
-
- /* <protected> */
- GMutex lock;
-
- GstMapFlags map_flags; /* cumulative map flags */
- gint map_count;
- gint gl_map_count;
-
- gpointer data;
- /* <private> */
- gpointer alloc_data;
-};
-
-typedef gboolean (*GstGLBaseBufferAllocatorCreateFunction) (GstGLBaseBuffer * buffer, GError ** error);
-typedef gpointer (*GstGLBaseBufferAllocatorMapBufferFunction) (GstGLBaseBuffer * buffer, GstMapInfo * info, gsize maxsize);
-typedef void (*GstGLBaseBufferAllocatorUnmapBufferFunction) (GstGLBaseBuffer * buffer, GstMapInfo * info);
-typedef GstGLBaseBuffer * (*GstGLBaseBufferAllocatorCopyFunction) (GstGLBaseBuffer * buffer, gssize offset, gssize size);
-typedef void (*GstGLBaseBufferAllocatorDestroyFunction) (GstGLBaseBuffer * buffer);
-
-/**
- * GstGLBaseBufferAllocator
- *
- * Opaque #GstGLAllocator struct
- */
-struct _GstGLBaseBufferAllocator
-{
- GstAllocator parent;
-};
-
-/**
- * GstGLBaseBufferAllocatorClass:
- *
- * The #GstGLBaseBufferAllocatorClass only contains private data
- */
-struct _GstGLBaseBufferAllocatorClass
-{
- GstAllocatorClass parent_class;
-
- GstGLBaseBufferAllocatorCreateFunction create;
- GstGLBaseBufferAllocatorMapBufferFunction map_buffer;
- GstGLBaseBufferAllocatorUnmapBufferFunction unmap_buffer;
- GstGLBaseBufferAllocatorCopyFunction copy;
- GstGLBaseBufferAllocatorDestroyFunction destroy;
-};
-
-#include <gst/gl/gl.h>
-
-#define GST_CAPS_FEATURE_MEMORY_GL_BUFFER "memory:GLBuffer"
-
-/**
- * GST_GL_BASE_BUFFER_ALLOCATOR_NAME:
- *
- * The name of the GL buffer allocator
- */
-#define GST_GL_BASE_BUFFER_ALLOCATOR_NAME "GLBuffer"
-
-void gst_gl_base_buffer_init_once (void);
-gboolean gst_is_gl_base_buffer (GstMemory * mem);
-
-void gst_gl_base_buffer_init (GstGLBaseBuffer * mem,
- GstAllocator * allocator,
- GstMemory * parent,
- GstGLContext * context,
- GstAllocationParams * params,
- gsize maxsize);
-
-GstGLBaseBuffer * gst_gl_base_buffer_alloc_data (GstGLBaseBuffer * gl_mem);
-
-gboolean gst_gl_base_buffer_copy_buffer_sub_data (GstGLBaseBuffer * src,
- GstGLBaseBuffer * dest,
- gssize offset,
- gssize size);
-gboolean gst_gl_base_buffer_memcpy (GstGLBaseBuffer * src,
- GstGLBaseBuffer * dest,
- gssize offset,
- gssize size);
-
-G_END_DECLS
-
-#endif /* _GST_GL_BUFFER_H_ */
projects / platform / upstream / gstreamer.git / commitdiff