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gstreamer/subprojects/gst-plugins-bad/gst-libs/gst/d3d11/gstd3d11memory.cpp
Seungha Yang e23645b5ad d3d11memory: Don't clear wrapped texture memory 
The external texture may hold already rendered scene and therefore
it should not be cleared in alloc method

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/4558>
2023-05-06 00:20:18 +00:00

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/* GStreamer
* Copyright (C) 2019 Seungha Yang <seungha.yang@navercorp.com>
* Copyright (C) 2020 Seungha Yang <seungha@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 "gstd3d11memory.h"
#include "gstd3d11device.h"
#include "gstd3d11utils.h"
#include "gstd3d11-private.h"
/**
* SECTION:gstd3d11memory
* @title: GstD3D11Memory
* @short_description: Direct3D11 memory abstraction layer
*
* Since: 1.22
*/
GST_DEBUG_CATEGORY_STATIC (gst_d3d11_allocator_debug);
#define GST_CAT_DEFAULT gst_d3d11_allocator_debug
static GstD3D11Allocator *_d3d11_memory_allocator;
GType
gst_d3d11_allocation_flags_get_type (void)
{
static GType type = 0;
static const GFlagsValue values[] = {
{GST_D3D11_ALLOCATION_FLAG_DEFAULT, "GST_D3D11_ALLOCATION_FLAG_DEFAULT",
"default"},
{GST_D3D11_ALLOCATION_FLAG_TEXTURE_ARRAY,
"GST_D3D11_ALLOCATION_FLAG_TEXTURE_ARRAY", "texture-array"},
{0, nullptr, nullptr}
};
GST_D3D11_CALL_ONCE_BEGIN {
type = g_flags_register_static ("GstD3D11AllocationFlags", values);
} GST_D3D11_CALL_ONCE_END;
return type;
}
GType
gst_d3d11_memory_transfer_get_type (void)
{
static GType type = 0;
static const GFlagsValue values[] = {
{GST_D3D11_MEMORY_TRANSFER_NEED_DOWNLOAD,
"GST_D3D11_MEMORY_TRANSFER_NEED_DOWNLOAD", "need-download"},
{GST_D3D11_MEMORY_TRANSFER_NEED_UPLOAD,
"GST_D3D11_MEMORY_TRANSFER_NEED_UPLOAD", "need-upload"},
{0, nullptr, nullptr}
};
GST_D3D11_CALL_ONCE_BEGIN {
type = g_flags_register_static ("GstD3D11MemoryTransfer", values);
} GST_D3D11_CALL_ONCE_END;
return type;
}
GType
gst_d3d11_memory_native_type_get_type (void)
{
static GType type = 0;
static const GEnumValue values[] = {
{GST_D3D11_MEMORY_NATIVE_TYPE_INVALID,
"GST_D3D11_MEMORY_NATIVE_TYPE_INVALID", "invalid"},
{GST_D3D11_MEMORY_NATIVE_TYPE_BUFFER, "GST_D3D11_MEMORY_NATIVE_TYPE_BUFFER",
"buffer"},
{GST_D3D11_MEMORY_NATIVE_TYPE_TEXTURE_2D,
"GST_D3D11_MEMORY_NATIVE_TYPE_TEXTURE_2D", "texture-2d"},
{0, nullptr, nullptr}
};
GST_D3D11_CALL_ONCE_BEGIN {
type = g_enum_register_static ("GstD3D11MemoryNativeType", values);
} GST_D3D11_CALL_ONCE_END;
return type;
}
/* GstD3D11AllocationParams */
static void gst_d3d11_allocation_params_init (GType type);
G_DEFINE_BOXED_TYPE_WITH_CODE (GstD3D11AllocationParams,
gst_d3d11_allocation_params,
(GBoxedCopyFunc) gst_d3d11_allocation_params_copy,
(GBoxedFreeFunc) gst_d3d11_allocation_params_free,
gst_d3d11_allocation_params_init (g_define_type_id));
/**
* gst_d3d11_allocation_params_new:
* @device: a #GstD3D11Device
* @info: a #GstVideoInfo
* @flags: a #GstD3D11AllocationFlags
* @bind_flags: D3D11_BIND_FLAG value used for creating texture
* @misc_flags: D3D11_RESOURCE_MISC_FLAG value used for creating texture
*
* Create #GstD3D11AllocationParams object which is used by #GstD3D11BufferPool
* and #GstD3D11Allocator in order to allocate new ID3D11Texture2D
* object with given configuration
*
* Returns: (transfer full) (nullable): a #GstD3D11AllocationParams or %NULL if @info is not supported
*
* Since: 1.22
*/
GstD3D11AllocationParams *
gst_d3d11_allocation_params_new (GstD3D11Device * device,
const GstVideoInfo * info, GstD3D11AllocationFlags flags, guint bind_flags,
guint misc_flags)
{
GstD3D11AllocationParams *ret;
GstD3D11Format d3d11_format;
guint i;
g_return_val_if_fail (info != NULL, NULL);
if (!gst_d3d11_device_get_format (device, GST_VIDEO_INFO_FORMAT (info),
&d3d11_format)) {
GST_WARNING ("Couldn't get d3d11 format");
return NULL;
}
ret = g_new0 (GstD3D11AllocationParams, 1);
ret->info = *info;
ret->aligned_info = *info;
ret->d3d11_format = d3d11_format;
/* Usage Flag
* https://docs.microsoft.com/en-us/windows/win32/api/d3d11/ne-d3d11-d3d11_usage
*
* +----------------------------------------------------------+
* | Resource Usage | Default | Dynamic | Immutable | Staging |
* +----------------+---------+---------+-----------+---------+
* | GPU-Read | Yes | Yes | Yes | Yes |
* | GPU-Write | Yes | | | Yes |
* | CPU-Read | | | | Yes |
* | CPU-Write | | Yes | | Yes |
* +----------------------------------------------------------+
*/
/* If corresponding dxgi format is undefined, use resource format instead */
if (d3d11_format.dxgi_format == DXGI_FORMAT_UNKNOWN) {
for (i = 0; i < GST_VIDEO_INFO_N_PLANES (info); i++) {
g_assert (d3d11_format.resource_format[i] != DXGI_FORMAT_UNKNOWN);
ret->desc[i].Width = GST_VIDEO_INFO_COMP_WIDTH (info, i);
ret->desc[i].Height = GST_VIDEO_INFO_COMP_HEIGHT (info, i);
ret->desc[i].MipLevels = 1;
ret->desc[i].ArraySize = 1;
ret->desc[i].Format = d3d11_format.resource_format[i];
ret->desc[i].SampleDesc.Count = 1;
ret->desc[i].SampleDesc.Quality = 0;
ret->desc[i].Usage = D3D11_USAGE_DEFAULT;
ret->desc[i].BindFlags = bind_flags;
ret->desc[i].MiscFlags = misc_flags;
}
} else {
ret->desc[0].Width = GST_VIDEO_INFO_WIDTH (info);
ret->desc[0].Height = GST_VIDEO_INFO_HEIGHT (info);
ret->desc[0].MipLevels = 1;
ret->desc[0].ArraySize = 1;
ret->desc[0].Format = d3d11_format.dxgi_format;
ret->desc[0].SampleDesc.Count = 1;
ret->desc[0].SampleDesc.Quality = 0;
ret->desc[0].Usage = D3D11_USAGE_DEFAULT;
ret->desc[0].BindFlags = bind_flags;
ret->desc[0].MiscFlags = misc_flags;
}
ret->flags = flags;
return ret;
}
/**
* gst_d3d11_allocation_params_alignment:
* @params: a #GstD3D11AllocationParams
* @align: a #GstVideoAlignment
*
* Adjust Width and Height fields of D3D11_TEXTURE2D_DESC with given
* @align
*
* Returns: %TRUE if alignment could be applied
*
* Since: 1.22
*/
gboolean
gst_d3d11_allocation_params_alignment (GstD3D11AllocationParams * params,
const GstVideoAlignment * align)
{
guint i;
guint padding_width, padding_height;
GstVideoInfo *info;
GstVideoInfo new_info;
g_return_val_if_fail (params != NULL, FALSE);
g_return_val_if_fail (align != NULL, FALSE);
/* d3d11 does not support stride align. Consider padding only */
padding_width = align->padding_left + align->padding_right;
padding_height = align->padding_top + align->padding_bottom;
info = &params->info;
if (!gst_video_info_set_format (&new_info, GST_VIDEO_INFO_FORMAT (info),
GST_VIDEO_INFO_WIDTH (info) + padding_width,
GST_VIDEO_INFO_HEIGHT (info) + padding_height)) {
GST_WARNING ("Set format fail");
return FALSE;
}
params->aligned_info = new_info;
for (i = 0; i < GST_VIDEO_INFO_N_PLANES (info); i++) {
params->desc[i].Width = GST_VIDEO_INFO_COMP_WIDTH (&new_info, i);
params->desc[i].Height = GST_VIDEO_INFO_COMP_HEIGHT (&new_info, i);
}
return TRUE;
}
/**
* gst_d3d11_allocation_params_copy:
* @src: a #GstD3D11AllocationParams
*
* Returns: (transfer full): a copy of @src
*
* Since: 1.22
*/
GstD3D11AllocationParams *
gst_d3d11_allocation_params_copy (GstD3D11AllocationParams * src)
{
GstD3D11AllocationParams *dst;
g_return_val_if_fail (src != NULL, NULL);
dst = g_new0 (GstD3D11AllocationParams, 1);
memcpy (dst, src, sizeof (GstD3D11AllocationParams));
return dst;
}
/**
* gst_d3d11_allocation_params_free:
* @params: a #GstD3D11AllocationParams
*
* Free @params
*
* Since: 1.22
*/
void
gst_d3d11_allocation_params_free (GstD3D11AllocationParams * params)
{
g_free (params);
}
static gint
gst_d3d11_allocation_params_compare (const GstD3D11AllocationParams * p1,
const GstD3D11AllocationParams * p2)
{
g_return_val_if_fail (p1 != NULL, -1);
g_return_val_if_fail (p2 != NULL, -1);
if (p1 == p2)
return 0;
return -1;
}
static void
gst_d3d11_allocation_params_init (GType type)
{
static GstValueTable table = {
0, (GstValueCompareFunc) gst_d3d11_allocation_params_compare,
NULL, NULL
};
table.type = type;
gst_value_register (&table);
}
/* GstD3D11Memory */
#define GST_D3D11_MEMORY_GET_LOCK(m) (&(GST_D3D11_MEMORY_CAST(m)->priv->lock))
struct _GstD3D11MemoryPrivate
{
ID3D11Texture2D *texture;
ID3D11Buffer *buffer;
GstD3D11MemoryNativeType native_type;
D3D11_TEXTURE2D_DESC desc;
D3D11_BUFFER_DESC buffer_desc;
guint subresource_index;
/* protected by device lock */
ID3D11Resource *staging;
D3D11_MAPPED_SUBRESOURCE map;
gint cpu_map_count;
/* protects resource objects */
SRWLOCK lock;
ID3D11ShaderResourceView *shader_resource_view[GST_VIDEO_MAX_PLANES];
guint num_shader_resource_views;
ID3D11RenderTargetView *render_target_view[GST_VIDEO_MAX_PLANES];
guint num_render_target_views;
ID3D11VideoDecoderOutputView *decoder_output_view;
ID3D11VideoDecoder *decoder_handle;
ID3D11VideoProcessorInputView *processor_input_view;
ID3D11VideoProcessorOutputView *processor_output_view;
GDestroyNotify notify;
gpointer user_data;
};
static inline D3D11_MAP
gst_d3d11_map_flags_to_d3d11 (GstMapFlags flags)
{
if ((flags & GST_MAP_READWRITE) == GST_MAP_READWRITE)
return D3D11_MAP_READ_WRITE;
else if ((flags & GST_MAP_WRITE) == GST_MAP_WRITE)
return D3D11_MAP_WRITE;
else if ((flags & GST_MAP_READ) == GST_MAP_READ)
return D3D11_MAP_READ;
else
g_assert_not_reached ();
return D3D11_MAP_READ;
}
static ID3D11Texture2D *
gst_d3d11_allocate_staging_texture (GstD3D11Device * device,
const D3D11_TEXTURE2D_DESC * ref)
{
D3D11_TEXTURE2D_DESC desc = { 0, };
ID3D11Texture2D *texture = NULL;
ID3D11Device *device_handle = gst_d3d11_device_get_device_handle (device);
HRESULT hr;
desc.Width = ref->Width;
desc.Height = ref->Height;
desc.MipLevels = 1;
desc.Format = ref->Format;
desc.SampleDesc.Count = 1;
desc.ArraySize = 1;
desc.Usage = D3D11_USAGE_STAGING;
desc.CPUAccessFlags = (D3D11_CPU_ACCESS_READ | D3D11_CPU_ACCESS_WRITE);
hr = device_handle->CreateTexture2D (&desc, NULL, &texture);
if (!gst_d3d11_result (hr, device)) {
GST_ERROR_OBJECT (device, "Failed to create texture");
return NULL;
}
return texture;
}
/* Must be called with d3d11 device lock */
static gboolean
gst_d3d11_memory_map_cpu_access (GstD3D11Memory * dmem, D3D11_MAP map_type)
{
GstD3D11MemoryPrivate *priv = dmem->priv;
HRESULT hr;
ID3D11DeviceContext *device_context =
gst_d3d11_device_get_device_context_handle (dmem->device);
hr = device_context->Map (priv->staging, 0, map_type, 0, &priv->map);
if (!gst_d3d11_result (hr, dmem->device)) {
GST_ERROR_OBJECT (GST_MEMORY_CAST (dmem)->allocator,
"Failed to map staging texture (0x%x)", (guint) hr);
return FALSE;
}
return TRUE;
}
/* Must be called with d3d11 device lock */
static void
gst_d3d11_memory_upload (GstD3D11Memory * dmem)
{
GstD3D11MemoryPrivate *priv = dmem->priv;
ID3D11DeviceContext *device_context;
if (!priv->staging ||
!GST_MEMORY_FLAG_IS_SET (dmem, GST_D3D11_MEMORY_TRANSFER_NEED_UPLOAD))
return;
device_context = gst_d3d11_device_get_device_context_handle (dmem->device);
device_context->CopySubresourceRegion (priv->texture, priv->subresource_index,
0, 0, 0, priv->staging, 0, NULL);
}
/* Must be called with d3d11 device lock */
static void
gst_d3d11_memory_download (GstD3D11Memory * dmem)
{
GstD3D11MemoryPrivate *priv = dmem->priv;
ID3D11DeviceContext *device_context;
if (!priv->staging ||
!GST_MEMORY_FLAG_IS_SET (dmem, GST_D3D11_MEMORY_TRANSFER_NEED_DOWNLOAD))
return;
device_context = gst_d3d11_device_get_device_context_handle (dmem->device);
device_context->CopySubresourceRegion (priv->staging, 0, 0, 0, 0,
priv->texture, priv->subresource_index, NULL);
}
static gpointer
gst_d3d11_memory_map_full (GstMemory * mem, GstMapInfo * info, gsize maxsize)
{
GstD3D11Memory *dmem = GST_D3D11_MEMORY_CAST (mem);
GstD3D11MemoryPrivate *priv = dmem->priv;
GstMapFlags flags = info->flags;
GstD3D11DeviceLockGuard lk (dmem->device);
memset (info->user_data, 0, sizeof (info->user_data));
info->user_data[0] = GUINT_TO_POINTER (dmem->priv->subresource_index);
if ((flags & GST_MAP_D3D11) == GST_MAP_D3D11) {
if (priv->native_type == GST_D3D11_MEMORY_NATIVE_TYPE_BUFFER) {
/* FIXME: handle non-staging buffer */
g_assert (priv->buffer != nullptr);
return priv->buffer;
} else {
gst_d3d11_memory_upload (dmem);
GST_MEMORY_FLAG_UNSET (dmem, GST_D3D11_MEMORY_TRANSFER_NEED_UPLOAD);
if ((flags & GST_MAP_WRITE) == GST_MAP_WRITE)
GST_MINI_OBJECT_FLAG_SET (dmem,
GST_D3D11_MEMORY_TRANSFER_NEED_DOWNLOAD);
g_assert (priv->texture != NULL);
return priv->texture;
}
}
if (priv->cpu_map_count == 0) {
D3D11_MAP map_type;
/* FIXME: handle non-staging buffer */
if (priv->native_type == GST_D3D11_MEMORY_NATIVE_TYPE_TEXTURE_2D) {
/* Allocate staging texture for CPU access */
if (!priv->staging) {
priv->staging = gst_d3d11_allocate_staging_texture (dmem->device,
&priv->desc);
if (!priv->staging) {
GST_ERROR_OBJECT (mem->allocator, "Couldn't create staging texture");
return nullptr;
}
/* first memory, always need download to staging */
GST_MINI_OBJECT_FLAG_SET (mem, GST_D3D11_MEMORY_TRANSFER_NEED_DOWNLOAD);
}
gst_d3d11_memory_download (dmem);
}
map_type = gst_d3d11_map_flags_to_d3d11 (flags);
if (!gst_d3d11_memory_map_cpu_access (dmem, map_type)) {
GST_ERROR_OBJECT (mem->allocator, "Couldn't map staging texture");
return nullptr;
}
}
if ((flags & GST_MAP_WRITE) == GST_MAP_WRITE) {
GST_MINI_OBJECT_FLAG_SET (mem, GST_D3D11_MEMORY_TRANSFER_NEED_UPLOAD);
}
GST_MEMORY_FLAG_UNSET (mem, GST_D3D11_MEMORY_TRANSFER_NEED_DOWNLOAD);
priv->cpu_map_count++;
return dmem->priv->map.pData;
}
/* Must be called with d3d11 device lock */
static void
gst_d3d11_memory_unmap_cpu_access (GstD3D11Memory * dmem)
{
GstD3D11MemoryPrivate *priv = dmem->priv;
ID3D11DeviceContext *device_context =
gst_d3d11_device_get_device_context_handle (dmem->device);
device_context->Unmap (priv->staging, 0);
}
static void
gst_d3d11_memory_unmap_full (GstMemory * mem, GstMapInfo * info)
{
GstD3D11Memory *dmem = GST_D3D11_MEMORY_CAST (mem);
GstD3D11MemoryPrivate *priv = dmem->priv;
GstD3D11DeviceLockGuard lk (dmem->device);
if ((info->flags & GST_MAP_D3D11) == GST_MAP_D3D11) {
if ((info->flags & GST_MAP_WRITE) == GST_MAP_WRITE)
GST_MINI_OBJECT_FLAG_SET (mem, GST_D3D11_MEMORY_TRANSFER_NEED_DOWNLOAD);
return;
}
if ((info->flags & GST_MAP_WRITE) == GST_MAP_WRITE)
GST_MINI_OBJECT_FLAG_SET (mem, GST_D3D11_MEMORY_TRANSFER_NEED_UPLOAD);
priv->cpu_map_count--;
if (priv->cpu_map_count > 0)
return;
gst_d3d11_memory_unmap_cpu_access (dmem);
}
static GstMemory *
gst_d3d11_memory_share (GstMemory * mem, gssize offset, gssize size)
{
/* TODO: impl. */
return NULL;
}
static gboolean
gst_d3d11_memory_update_size (GstMemory * mem)
{
GstD3D11Memory *dmem = GST_D3D11_MEMORY_CAST (mem);
GstD3D11MemoryPrivate *priv = dmem->priv;
gsize offset[GST_VIDEO_MAX_PLANES];
gint stride[GST_VIDEO_MAX_PLANES];
gsize size;
D3D11_TEXTURE2D_DESC *desc = &priv->desc;
if (!priv->staging) {
priv->staging = gst_d3d11_allocate_staging_texture (dmem->device,
&priv->desc);
if (!priv->staging) {
GST_ERROR_OBJECT (mem->allocator, "Couldn't create staging texture");
return FALSE;
}
}
GstD3D11DeviceLockGuard lk (dmem->device);
if (!gst_d3d11_memory_map_cpu_access (dmem, D3D11_MAP_READ_WRITE)) {
GST_ERROR_OBJECT (mem->allocator, "Couldn't map staging texture");
return FALSE;
}
gst_d3d11_memory_unmap_cpu_access (dmem);
if (!gst_d3d11_dxgi_format_get_size (desc->Format, desc->Width, desc->Height,
priv->map.RowPitch, offset, stride, &size)) {
GST_ERROR_OBJECT (mem->allocator, "Couldn't calculate memory size");
GST_D3D11_CLEAR_COM (priv->staging);
return FALSE;
}
GST_D3D11_CLEAR_COM (priv->staging);
mem->maxsize = mem->size = size;
return TRUE;
}
/**
* gst_is_d3d11_memory:
* @mem: a #GstMemory
*
* Returns: whether @mem is a #GstD3D11Memory
*
* Since: 1.22
*/
gboolean
gst_is_d3d11_memory (GstMemory * mem)
{
return mem != NULL && mem->allocator != NULL &&
(GST_IS_D3D11_ALLOCATOR (mem->allocator) ||
GST_IS_D3D11_POOL_ALLOCATOR (mem->allocator));
}
/**
* gst_d3d11_memory_get_native_type:
* @mem: a #GstD3D11Memory
*
* Returns: a #GstD3D11MemoryNativeType
*
* Since: 1.22
*/
GstD3D11MemoryNativeType
gst_d3d11_memory_get_native_type (GstD3D11Memory * mem)
{
if (!gst_is_d3d11_memory (GST_MEMORY_CAST (mem)))
return GST_D3D11_MEMORY_NATIVE_TYPE_INVALID;
return mem->priv->native_type;
}
/**
* gst_d3d11_memory_init_once:
*
* Initializes the Direct3D11 Texture allocator. It is safe to call
* this function multiple times. This must be called before any other
* GstD3D11Memory operation.
*
* Since: 1.22
*/
void
gst_d3d11_memory_init_once (void)
{
GST_D3D11_CALL_ONCE_BEGIN {
GST_DEBUG_CATEGORY_INIT (gst_d3d11_allocator_debug, "d3d11allocator", 0,
"Direct3D11 Texture Allocator");
_d3d11_memory_allocator =
(GstD3D11Allocator *) g_object_new (GST_TYPE_D3D11_ALLOCATOR, NULL);
gst_object_ref_sink (_d3d11_memory_allocator);
gst_object_ref (_d3d11_memory_allocator);
gst_allocator_register (GST_D3D11_MEMORY_NAME,
GST_ALLOCATOR_CAST (_d3d11_memory_allocator));
} GST_D3D11_CALL_ONCE_END;
}
/**
* gst_d3d11_memory_get_resource_handle:
* @mem: a #GstD3D11Memory
*
* Returns: (transfer none) (nullable): a ID3D11Resource handle. Caller must not release
* returned handle.
*
* Since: 1.22
*/
ID3D11Resource *
gst_d3d11_memory_get_resource_handle (GstD3D11Memory * mem)
{
g_return_val_if_fail (gst_is_d3d11_memory (GST_MEMORY_CAST (mem)), NULL);
switch (mem->priv->native_type) {
case GST_D3D11_MEMORY_NATIVE_TYPE_BUFFER:
return mem->priv->buffer;
case GST_D3D11_MEMORY_NATIVE_TYPE_TEXTURE_2D:
return mem->priv->texture;
default:
break;
}
return nullptr;
}
/**
* gst_d3d11_memory_get_subresource_index:
* @mem: a #GstD3D11Memory
*
* Returns: subresource index corresponding to @mem.
*
* Since: 1.22
*/
guint
gst_d3d11_memory_get_subresource_index (GstD3D11Memory * mem)
{
g_return_val_if_fail (gst_is_d3d11_memory (GST_MEMORY_CAST (mem)), 0);
if (mem->priv->native_type != GST_D3D11_MEMORY_NATIVE_TYPE_TEXTURE_2D)
return 0;
return mem->priv->subresource_index;
}
/**
* gst_d3d11_memory_get_texture_desc:
* @mem: a #GstD3D11Memory
* @desc: (out): a D3D11_TEXTURE2D_DESC
*
* Fill @desc with D3D11_TEXTURE2D_DESC for ID3D11Texture2D
*
* Returns: %TRUE if successeed
*
* Since: 1.22
*/
gboolean
gst_d3d11_memory_get_texture_desc (GstD3D11Memory * mem,
D3D11_TEXTURE2D_DESC * desc)
{
g_return_val_if_fail (gst_is_d3d11_memory (GST_MEMORY_CAST (mem)), FALSE);
g_return_val_if_fail (desc != NULL, FALSE);
if (mem->priv->native_type != GST_D3D11_MEMORY_NATIVE_TYPE_TEXTURE_2D)
return FALSE;
*desc = mem->priv->desc;
return TRUE;
}
/**
* gst_d3d11_memory_get_buffer_desc:
* @mem: a #GstD3D11Memory
* @desc: (out): a D3D11_BUFFER_DESC
*
* Fill @desc with D3D11_BUFFER_DESC for ID3D11Buffer
*
* Returns: %TRUE if successeed
*
* Since: 1.22
*/
gboolean
gst_d3d11_memory_get_buffer_desc (GstD3D11Memory * mem,
D3D11_BUFFER_DESC * desc)
{
g_return_val_if_fail (gst_is_d3d11_memory (GST_MEMORY_CAST (mem)), FALSE);
g_return_val_if_fail (desc != NULL, FALSE);
if (mem->priv->native_type != GST_D3D11_MEMORY_NATIVE_TYPE_BUFFER)
return FALSE;
*desc = mem->priv->buffer_desc;
return TRUE;
}
/**
* gst_d3d11_memory_get_resource_stride:
* @mem: a #GstD3D11Memory
* @stride: (out): stride of resource
*
* Returns: %TRUE if successeed
*
* Since: 1.22
*/
gboolean
gst_d3d11_memory_get_resource_stride (GstD3D11Memory * mem, guint * stride)
{
g_return_val_if_fail (gst_is_d3d11_memory (GST_MEMORY_CAST (mem)), FALSE);
g_return_val_if_fail (stride != NULL, FALSE);
*stride = mem->priv->map.RowPitch;
return TRUE;
}
static gboolean
create_shader_resource_views (GstD3D11Memory * mem)
{
GstD3D11MemoryPrivate *priv = mem->priv;
guint i;
HRESULT hr;
guint num_views = 0;
ID3D11Device *device_handle;
D3D11_SHADER_RESOURCE_VIEW_DESC resource_desc;
DXGI_FORMAT formats[GST_VIDEO_MAX_PLANES] = { DXGI_FORMAT_UNKNOWN, };
memset (&resource_desc, 0, sizeof (D3D11_SHADER_RESOURCE_VIEW_DESC));
device_handle = gst_d3d11_device_get_device_handle (mem->device);
num_views = gst_d3d11_dxgi_format_get_resource_format (priv->desc.Format,
formats);
if (!num_views) {
GST_ERROR_OBJECT (GST_MEMORY_CAST (mem)->allocator,
"Unknown resource formats for DXGI format %s (%d)",
gst_d3d11_dxgi_format_to_string (priv->desc.Format), priv->desc.Format);
return FALSE;
}
if ((priv->desc.BindFlags & D3D11_BIND_SHADER_RESOURCE) != 0) {
resource_desc.ViewDimension = D3D11_SRV_DIMENSION_TEXTURE2D;
resource_desc.Texture2D.MipLevels = 1;
for (i = 0; i < num_views; i++) {
resource_desc.Format = formats[i];
hr = device_handle->CreateShaderResourceView (priv->texture,
&resource_desc, &priv->shader_resource_view[i]);
if (!gst_d3d11_result (hr, mem->device)) {
GST_ERROR_OBJECT (GST_MEMORY_CAST (mem)->allocator,
"Failed to create resource DXGI format %s (%d) for plane %d"
" view (0x%x)", gst_d3d11_dxgi_format_to_string (formats[i]),
formats[i], i, (guint) hr);
goto error;
}
}
priv->num_shader_resource_views = num_views;
return TRUE;
}
return FALSE;
error:
for (i = 0; i < num_views; i++)
GST_D3D11_CLEAR_COM (priv->shader_resource_view[i]);
priv->num_shader_resource_views = 0;
return FALSE;
}
static gboolean
gst_d3d11_memory_ensure_shader_resource_view (GstD3D11Memory * mem)
{
GstD3D11MemoryPrivate *priv = mem->priv;
if (mem->priv->native_type != GST_D3D11_MEMORY_NATIVE_TYPE_TEXTURE_2D)
return FALSE;
if (!(priv->desc.BindFlags & D3D11_BIND_SHADER_RESOURCE)) {
GST_LOG_OBJECT (GST_MEMORY_CAST (mem)->allocator,
"Need BindFlags, current flag 0x%x", priv->desc.BindFlags);
return FALSE;
}
GstD3D11SRWLockGuard lk (GST_D3D11_MEMORY_GET_LOCK (mem));
if (priv->num_shader_resource_views)
return TRUE;
return create_shader_resource_views (mem);
}
/**
* gst_d3d11_memory_get_shader_resource_view_size:
* @mem: a #GstD3D11Memory
*
* Returns: the number of ID3D11ShaderResourceView that can be used
* for processing GPU operation with @mem
*
* Since: 1.22
*/
guint
gst_d3d11_memory_get_shader_resource_view_size (GstD3D11Memory * mem)
{
g_return_val_if_fail (gst_is_d3d11_memory (GST_MEMORY_CAST (mem)), 0);
if (!gst_d3d11_memory_ensure_shader_resource_view (mem))
return 0;
return mem->priv->num_shader_resource_views;
}
/**
* gst_d3d11_memory_get_shader_resource_view:
* @mem: a #GstD3D11Memory
* @index: the index of the ID3D11ShaderResourceView
*
* Returns: (transfer none) (nullable): a pointer to the
* ID3D11ShaderResourceView or %NULL if ID3D11ShaderResourceView is unavailable
* for @index
*
* Since: 1.22
*/
ID3D11ShaderResourceView *
gst_d3d11_memory_get_shader_resource_view (GstD3D11Memory * mem, guint index)
{
GstD3D11MemoryPrivate *priv;
g_return_val_if_fail (gst_is_d3d11_memory (GST_MEMORY_CAST (mem)), NULL);
if (!gst_d3d11_memory_ensure_shader_resource_view (mem))
return NULL;
priv = mem->priv;
if (index >= priv->num_shader_resource_views) {
GST_ERROR ("Invalid SRV index %d", index);
return NULL;
}
return priv->shader_resource_view[index];
}
static gboolean
create_render_target_views (GstD3D11Memory * mem)
{
GstD3D11MemoryPrivate *priv = mem->priv;
guint i;
HRESULT hr;
guint num_views = 0;
ID3D11Device *device_handle;
D3D11_RENDER_TARGET_VIEW_DESC render_desc;
DXGI_FORMAT formats[GST_VIDEO_MAX_PLANES] = { DXGI_FORMAT_UNKNOWN, };
memset (&render_desc, 0, sizeof (D3D11_RENDER_TARGET_VIEW_DESC));
device_handle = gst_d3d11_device_get_device_handle (mem->device);
num_views = gst_d3d11_dxgi_format_get_resource_format (priv->desc.Format,
formats);
if (!num_views) {
GST_ERROR_OBJECT (GST_MEMORY_CAST (mem)->allocator,
"Unknown resource formats for DXGI format %s (%d)",
gst_d3d11_dxgi_format_to_string (priv->desc.Format), priv->desc.Format);
return FALSE;
}
if ((priv->desc.BindFlags & D3D11_BIND_RENDER_TARGET) != 0) {
render_desc.ViewDimension = D3D11_RTV_DIMENSION_TEXTURE2D;
render_desc.Texture2D.MipSlice = 0;
for (i = 0; i < num_views; i++) {
render_desc.Format = formats[i];
hr = device_handle->CreateRenderTargetView (priv->texture, &render_desc,
&priv->render_target_view[i]);
if (!gst_d3d11_result (hr, mem->device)) {
GST_ERROR_OBJECT (GST_MEMORY_CAST (mem)->allocator,
"Failed to create resource DXGI format %s (%d) for plane %d"
" view (0x%x)", gst_d3d11_dxgi_format_to_string (formats[i]),
formats[i], i, (guint) hr);
goto error;
}
}
priv->num_render_target_views = num_views;
return TRUE;
}
return FALSE;
error:
for (i = 0; i < num_views; i++)
GST_D3D11_CLEAR_COM (priv->render_target_view[i]);
priv->num_render_target_views = 0;
return FALSE;
}
static gboolean
gst_d3d11_memory_ensure_render_target_view (GstD3D11Memory * mem)
{
GstD3D11MemoryPrivate *priv = mem->priv;
if (mem->priv->native_type != GST_D3D11_MEMORY_NATIVE_TYPE_TEXTURE_2D)
return FALSE;
if (!(priv->desc.BindFlags & D3D11_BIND_RENDER_TARGET)) {
GST_WARNING_OBJECT (GST_MEMORY_CAST (mem)->allocator,
"Need BindFlags, current flag 0x%x", priv->desc.BindFlags);
return FALSE;
}
GstD3D11SRWLockGuard lk (GST_D3D11_MEMORY_GET_LOCK (mem));
if (priv->num_render_target_views)
return TRUE;
return create_render_target_views (mem);
}
/**
* gst_d3d11_memory_get_render_target_view_size:
* @mem: a #GstD3D11Memory
*
* Returns: the number of ID3D11RenderTargetView that can be used
* for processing GPU operation with @mem
*
* Since: 1.22
*/
guint
gst_d3d11_memory_get_render_target_view_size (GstD3D11Memory * mem)
{
g_return_val_if_fail (gst_is_d3d11_memory (GST_MEMORY_CAST (mem)), 0);
if (!gst_d3d11_memory_ensure_render_target_view (mem))
return 0;
return mem->priv->num_render_target_views;
}
/**
* gst_d3d11_memory_get_render_target_view:
* @mem: a #GstD3D11Memory
* @index: the index of the ID3D11RenderTargetView
*
* Returns: (transfer none) (nullable): a pointer to the
* ID3D11RenderTargetView or %NULL if ID3D11RenderTargetView is unavailable
* for @index
*
* Since: 1.22
*/
ID3D11RenderTargetView *
gst_d3d11_memory_get_render_target_view (GstD3D11Memory * mem, guint index)
{
GstD3D11MemoryPrivate *priv;
g_return_val_if_fail (gst_is_d3d11_memory (GST_MEMORY_CAST (mem)), NULL);
if (!gst_d3d11_memory_ensure_render_target_view (mem))
return NULL;
priv = mem->priv;
if (index >= priv->num_render_target_views) {
GST_ERROR ("Invalid RTV index %d", index);
return NULL;
}
return priv->render_target_view[index];
}
static gboolean
gst_d3d11_memory_ensure_decoder_output_view (GstD3D11Memory * mem,
ID3D11VideoDevice * video_device, ID3D11VideoDecoder * decoder,
const GUID * decoder_profile)
{
GstD3D11MemoryPrivate *dmem_priv = mem->priv;
GstD3D11Allocator *allocator;
D3D11_VIDEO_DECODER_OUTPUT_VIEW_DESC desc;
HRESULT hr;
if (mem->priv->native_type != GST_D3D11_MEMORY_NATIVE_TYPE_TEXTURE_2D)
return FALSE;
allocator = GST_D3D11_ALLOCATOR (GST_MEMORY_CAST (mem)->allocator);
if (!(dmem_priv->desc.BindFlags & D3D11_BIND_DECODER)) {
GST_LOG_OBJECT (allocator,
"Need BindFlags, current flag 0x%x", dmem_priv->desc.BindFlags);
return FALSE;
}
GstD3D11SRWLockGuard lk (GST_D3D11_MEMORY_GET_LOCK (mem));
if (dmem_priv->decoder_output_view) {
dmem_priv->decoder_output_view->GetDesc (&desc);
if (IsEqualGUID (desc.DecodeProfile, *decoder_profile) &&
dmem_priv->decoder_handle == decoder) {
return TRUE;
} else {
/* Shouldn't happen, but try again anyway */
GST_WARNING_OBJECT (allocator,
"Existing view has different decoder profile");
GST_D3D11_CLEAR_COM (dmem_priv->decoder_output_view);
GST_D3D11_CLEAR_COM (dmem_priv->decoder_handle);
}
}
desc.DecodeProfile = *decoder_profile;
desc.ViewDimension = D3D11_VDOV_DIMENSION_TEXTURE2D;
desc.Texture2D.ArraySlice = dmem_priv->subresource_index;
hr = video_device->CreateVideoDecoderOutputView (dmem_priv->texture, &desc,
&dmem_priv->decoder_output_view);
if (!gst_d3d11_result (hr, mem->device)) {
GST_ERROR_OBJECT (allocator,
"Could not create decoder output view, hr: 0x%x", (guint) hr);
return FALSE;
}
/* XXX: decoder output view is bound to video device, not decoder handle
* from API point of view. But some driver seems to be unhappy
* when decoder handle is released while there are outstanding view objects */
dmem_priv->decoder_handle = decoder;
decoder->AddRef ();
return TRUE;
}
/**
* gst_d3d11_memory_get_decoder_output_view:
* @mem: a #GstD3D11Memory
* @video_device: (transfer none): a ID3D11VideoDevice handle
* @decoder: (transfer none): a ID3D11VideoDecoder handle
* @decoder_profile: a DXVA decoder profile GUID
*
* Returns: (transfer none) (nullable): a pointer to the
* ID3D11VideoDecoderOutputView or %NULL if ID3D11VideoDecoderOutputView is
* unavailable
*
* Since: 1.22
*/
ID3D11VideoDecoderOutputView *
gst_d3d11_memory_get_decoder_output_view (GstD3D11Memory * mem,
ID3D11VideoDevice * video_device, ID3D11VideoDecoder * decoder,
const GUID * decoder_profile)
{
g_return_val_if_fail (gst_is_d3d11_memory (GST_MEMORY_CAST (mem)), NULL);
g_return_val_if_fail (video_device != NULL, NULL);
g_return_val_if_fail (decoder != NULL, NULL);
g_return_val_if_fail (decoder_profile != NULL, NULL);
if (!gst_d3d11_memory_ensure_decoder_output_view (mem,
video_device, decoder, decoder_profile))
return NULL;
return mem->priv->decoder_output_view;
}
static gboolean
check_bind_flags_for_processor_input_view (guint bind_flags)
{
static const guint compatible_flags = (D3D11_BIND_DECODER |
D3D11_BIND_VIDEO_ENCODER | D3D11_BIND_RENDER_TARGET |
D3D11_BIND_UNORDERED_ACCESS);
if (bind_flags == 0)
return TRUE;
if ((bind_flags & compatible_flags) != 0)
return TRUE;
return FALSE;
}
static gboolean
gst_d3d11_memory_ensure_processor_input_view (GstD3D11Memory * mem,
ID3D11VideoDevice * video_device,
ID3D11VideoProcessorEnumerator * enumerator)
{
GstD3D11MemoryPrivate *dmem_priv = mem->priv;
GstD3D11Allocator *allocator;
D3D11_VIDEO_PROCESSOR_INPUT_VIEW_DESC desc;
HRESULT hr;
if (mem->priv->native_type != GST_D3D11_MEMORY_NATIVE_TYPE_TEXTURE_2D)
return FALSE;
allocator = GST_D3D11_ALLOCATOR (GST_MEMORY_CAST (mem)->allocator);
if (!check_bind_flags_for_processor_input_view (dmem_priv->desc.BindFlags)) {
GST_LOG_OBJECT (allocator,
"Need BindFlags, current flag 0x%x", dmem_priv->desc.BindFlags);
return FALSE;
}
GstD3D11SRWLockGuard lk (GST_D3D11_MEMORY_GET_LOCK (mem));
if (dmem_priv->processor_input_view)
return TRUE;
desc.FourCC = 0;
desc.ViewDimension = D3D11_VPIV_DIMENSION_TEXTURE2D;
desc.Texture2D.MipSlice = 0;
desc.Texture2D.ArraySlice = dmem_priv->subresource_index;
hr = video_device->CreateVideoProcessorInputView (dmem_priv->texture,
enumerator, &desc, &dmem_priv->processor_input_view);
if (!gst_d3d11_result (hr, mem->device)) {
GST_ERROR_OBJECT (allocator,
"Could not create processor input view, hr: 0x%x", (guint) hr);
return FALSE;
}
return TRUE;
}
/**
* gst_d3d11_memory_get_processor_input_view:
* @mem: a #GstD3D11Memory
* @video_device: a #ID3D11VideoDevice
* @enumerator: a #ID3D11VideoProcessorEnumerator
*
* Returns: (transfer none) (nullable): a pointer to the
* ID3D11VideoProcessorInputView or %NULL if ID3D11VideoProcessorInputView is
* unavailable
*
* Since: 1.22
*/
ID3D11VideoProcessorInputView *
gst_d3d11_memory_get_processor_input_view (GstD3D11Memory * mem,
ID3D11VideoDevice * video_device,
ID3D11VideoProcessorEnumerator * enumerator)
{
g_return_val_if_fail (gst_is_d3d11_memory (GST_MEMORY_CAST (mem)), NULL);
g_return_val_if_fail (video_device != NULL, NULL);
g_return_val_if_fail (enumerator != NULL, NULL);
if (!gst_d3d11_memory_ensure_processor_input_view (mem, video_device,
enumerator))
return NULL;
return mem->priv->processor_input_view;
}
static gboolean
gst_d3d11_memory_ensure_processor_output_view (GstD3D11Memory * mem,
ID3D11VideoDevice * video_device,
ID3D11VideoProcessorEnumerator * enumerator)
{
GstD3D11MemoryPrivate *priv = mem->priv;
GstD3D11Allocator *allocator;
D3D11_VIDEO_PROCESSOR_OUTPUT_VIEW_DESC desc;
HRESULT hr;
if (mem->priv->native_type != GST_D3D11_MEMORY_NATIVE_TYPE_TEXTURE_2D)
return FALSE;
memset (&desc, 0, sizeof (D3D11_VIDEO_PROCESSOR_OUTPUT_VIEW_DESC));
allocator = GST_D3D11_ALLOCATOR (GST_MEMORY_CAST (mem)->allocator);
if (!(priv->desc.BindFlags & D3D11_BIND_RENDER_TARGET)) {
GST_LOG_OBJECT (allocator,
"Need BindFlags, current flag 0x%x", priv->desc.BindFlags);
return FALSE;
}
/* FIXME: texture array should be supported at some point */
if (priv->subresource_index != 0) {
GST_FIXME_OBJECT (allocator,
"Texture array is not suppoted for processor output view");
return FALSE;
}
GstD3D11SRWLockGuard lk (GST_D3D11_MEMORY_GET_LOCK (mem));
if (priv->processor_output_view)
return TRUE;
desc.ViewDimension = D3D11_VPOV_DIMENSION_TEXTURE2D;
desc.Texture2D.MipSlice = 0;
hr = video_device->CreateVideoProcessorOutputView (priv->texture,
enumerator, &desc, &priv->processor_output_view);
if (!gst_d3d11_result (hr, mem->device)) {
GST_ERROR_OBJECT (allocator,
"Could not create processor input view, hr: 0x%x", (guint) hr);
return FALSE;
}
return TRUE;
}
/**
* gst_d3d11_memory_get_processor_output_view:
* @mem: a #GstD3D11Memory
* @video_device: a #ID3D11VideoDevice
* @enumerator: a #ID3D11VideoProcessorEnumerator
*
* Returns: (transfer none) (nullable): a pointer to the
* ID3D11VideoProcessorOutputView or %NULL if ID3D11VideoProcessorOutputView is
* unavailable
*
* Since: 1.22
*/
ID3D11VideoProcessorOutputView *
gst_d3d11_memory_get_processor_output_view (GstD3D11Memory * mem,
ID3D11VideoDevice * video_device,
ID3D11VideoProcessorEnumerator * enumerator)
{
g_return_val_if_fail (gst_is_d3d11_memory (GST_MEMORY_CAST (mem)), NULL);
g_return_val_if_fail (video_device != NULL, NULL);
g_return_val_if_fail (enumerator != NULL, NULL);
if (!gst_d3d11_memory_ensure_processor_output_view (mem, video_device,
enumerator))
return NULL;
return mem->priv->processor_output_view;
}
/* GstD3D11Allocator */
struct _GstD3D11AllocatorPrivate
{
GstMemoryCopyFunction fallback_copy;
};
#define gst_d3d11_allocator_parent_class alloc_parent_class
G_DEFINE_TYPE_WITH_PRIVATE (GstD3D11Allocator,
gst_d3d11_allocator, GST_TYPE_ALLOCATOR);
static GstMemory *gst_d3d11_allocator_dummy_alloc (GstAllocator * allocator,
gsize size, GstAllocationParams * params);
static GstMemory *gst_d3d11_allocator_alloc_internal (GstD3D11Allocator * self,
GstD3D11Device * device, const D3D11_TEXTURE2D_DESC * desc,
ID3D11Texture2D * texture);
static void gst_d3d11_allocator_free (GstAllocator * allocator,
GstMemory * mem);
static void
gst_d3d11_allocator_class_init (GstD3D11AllocatorClass * klass)
{
GstAllocatorClass *allocator_class = GST_ALLOCATOR_CLASS (klass);
allocator_class->alloc = gst_d3d11_allocator_dummy_alloc;
allocator_class->free = gst_d3d11_allocator_free;
}
static GstMemory *
gst_d3d11_memory_copy (GstMemory * mem, gssize offset, gssize size)
{
GstD3D11Allocator *alloc = GST_D3D11_ALLOCATOR (mem->allocator);
GstD3D11AllocatorPrivate *priv = alloc->priv;
GstD3D11Memory *dmem = GST_D3D11_MEMORY_CAST (mem);
GstD3D11Memory *copy_dmem;
GstD3D11Device *device = dmem->device;
ID3D11DeviceContext *device_context =
gst_d3d11_device_get_device_context_handle (device);
D3D11_TEXTURE2D_DESC dst_desc = { 0, };
D3D11_TEXTURE2D_DESC src_desc = { 0, };
GstMemory *copy = NULL;
GstMapInfo info;
if (dmem->priv->native_type != GST_D3D11_MEMORY_NATIVE_TYPE_TEXTURE_2D)
return priv->fallback_copy (mem, offset, size);
/* non-zero offset or different size is not supported */
if (offset != 0 || (size != -1 && (gsize) size != mem->size)) {
GST_DEBUG_OBJECT (alloc, "Different size/offset, try fallback copy");
return priv->fallback_copy (mem, offset, size);
}
GstD3D11DeviceLockGuard lk (device);
if (!gst_memory_map (mem, &info,
(GstMapFlags) (GST_MAP_READ | GST_MAP_D3D11))) {
GST_WARNING_OBJECT (alloc, "Failed to map memory, try fallback copy");
return priv->fallback_copy (mem, offset, size);
}
dmem->priv->texture->GetDesc (&src_desc);
dst_desc.Width = src_desc.Width;
dst_desc.Height = src_desc.Height;
dst_desc.MipLevels = 1;
dst_desc.Format = src_desc.Format;
dst_desc.SampleDesc.Count = 1;
dst_desc.ArraySize = 1;
dst_desc.Usage = D3D11_USAGE_DEFAULT;
dst_desc.BindFlags = src_desc.BindFlags;
copy = gst_d3d11_allocator_alloc_internal (alloc, device, &dst_desc, nullptr);
if (!copy) {
gst_memory_unmap (mem, &info);
GST_WARNING_OBJECT (alloc,
"Failed to allocate new d3d11 map memory, try fallback copy");
return priv->fallback_copy (mem, offset, size);
}
copy_dmem = GST_D3D11_MEMORY_CAST (copy);
device_context->CopySubresourceRegion (copy_dmem->priv->texture, 0, 0, 0, 0,
dmem->priv->texture, dmem->priv->subresource_index, NULL);
copy->maxsize = copy->size = mem->maxsize;
gst_memory_unmap (mem, &info);
/* newly allocated memory holds valid image data. We need download this
* pixel data into staging memory for CPU access */
GST_MINI_OBJECT_FLAG_SET (mem, GST_D3D11_MEMORY_TRANSFER_NEED_DOWNLOAD);
return copy;
}
static void
gst_d3d11_allocator_init (GstD3D11Allocator * allocator)
{
GstAllocator *alloc = GST_ALLOCATOR_CAST (allocator);
GstD3D11AllocatorPrivate *priv;
priv = allocator->priv = (GstD3D11AllocatorPrivate *)
gst_d3d11_allocator_get_instance_private (allocator);
alloc->mem_type = GST_D3D11_MEMORY_NAME;
alloc->mem_map_full = gst_d3d11_memory_map_full;
alloc->mem_unmap_full = gst_d3d11_memory_unmap_full;
alloc->mem_share = gst_d3d11_memory_share;
/* Store pointer to default mem_copy method for fallback copy */
priv->fallback_copy = alloc->mem_copy;
alloc->mem_copy = gst_d3d11_memory_copy;
GST_OBJECT_FLAG_SET (alloc, GST_ALLOCATOR_FLAG_CUSTOM_ALLOC);
}
static GstMemory *
gst_d3d11_allocator_dummy_alloc (GstAllocator * allocator, gsize size,
GstAllocationParams * params)
{
g_return_val_if_reached (NULL);
}
static void
gst_d3d11_allocator_free (GstAllocator * allocator, GstMemory * mem)
{
GstD3D11Memory *dmem = GST_D3D11_MEMORY_CAST (mem);
GstD3D11MemoryPrivate *dmem_priv = dmem->priv;
gint i;
GST_LOG_OBJECT (allocator, "Free memory %p", mem);
for (i = 0; i < GST_VIDEO_MAX_PLANES; i++) {
GST_D3D11_CLEAR_COM (dmem_priv->render_target_view[i]);
GST_D3D11_CLEAR_COM (dmem_priv->shader_resource_view[i]);
}
GST_D3D11_CLEAR_COM (dmem_priv->decoder_output_view);
GST_D3D11_CLEAR_COM (dmem_priv->processor_input_view);
GST_D3D11_CLEAR_COM (dmem_priv->processor_output_view);
GST_D3D11_CLEAR_COM (dmem_priv->texture);
GST_D3D11_CLEAR_COM (dmem_priv->staging);
GST_D3D11_CLEAR_COM (dmem_priv->buffer);
GST_D3D11_CLEAR_COM (dmem_priv->decoder_handle);
gst_clear_object (&dmem->device);
if (dmem_priv->notify)
dmem_priv->notify (dmem_priv->user_data);
g_free (dmem->priv);
g_free (dmem);
}
static GstMemory *
gst_d3d11_allocator_alloc_wrapped_internal (GstD3D11Allocator * self,
GstD3D11Device * device, const D3D11_TEXTURE2D_DESC * desc,
ID3D11Texture2D * texture)
{
GstD3D11Memory *mem;
mem = g_new0 (GstD3D11Memory, 1);
mem->priv = g_new0 (GstD3D11MemoryPrivate, 1);
gst_memory_init (GST_MEMORY_CAST (mem),
(GstMemoryFlags) 0, GST_ALLOCATOR_CAST (self), NULL, 0, 0, 0, 0);
mem->priv->texture = texture;
mem->priv->desc = *desc;
mem->priv->native_type = GST_D3D11_MEMORY_NATIVE_TYPE_TEXTURE_2D;
mem->device = (GstD3D11Device *) gst_object_ref (device);
return GST_MEMORY_CAST (mem);
}
typedef void (*GstD3D11ClearRTVFunc) (ID3D11DeviceContext * context_handle,
ID3D11RenderTargetView * rtv);
static void
clear_rtv_chroma (ID3D11DeviceContext * context_handle,
ID3D11RenderTargetView * rtv)
{
const FLOAT clear_color[4] = { 0.5f, 0.5f, 0.5f, 1.0f };
context_handle->ClearRenderTargetView (rtv, clear_color);
}
static void
clear_rtv_vuya (ID3D11DeviceContext * context_handle,
ID3D11RenderTargetView * rtv)
{
const FLOAT clear_color[4] = { 0.5f, 0.5f, 0.0f, 1.0f };
context_handle->ClearRenderTargetView (rtv, clear_color);
}
static GstMemory *
gst_d3d11_allocator_alloc_internal (GstD3D11Allocator * self,
GstD3D11Device * device, const D3D11_TEXTURE2D_DESC * desc,
ID3D11Texture2D * texture)
{
ID3D11Device *device_handle;
ID3D11DeviceContext *context_handle;
HRESULT hr;
GstMemory *mem;
GstD3D11Memory *dmem;
ID3D11RenderTargetView *rtv = nullptr;
GstD3D11ClearRTVFunc clear_func = nullptr;
gboolean is_new_texture = TRUE;
device_handle = gst_d3d11_device_get_device_handle (device);
if (!texture) {
hr = device_handle->CreateTexture2D (desc, nullptr, &texture);
if (!gst_d3d11_result (hr, device)) {
GST_ERROR_OBJECT (self, "Couldn't create texture");
return nullptr;
}
} else {
is_new_texture = FALSE;
}
mem =
gst_d3d11_allocator_alloc_wrapped_internal (self, device, desc, texture);
if (!mem)
return nullptr;
/* Don't clear external texture */
if (!is_new_texture)
return mem;
/* Clear with YUV black if needed and possible
* TODO: do this using UAV if RTV is not allowed (e.g., packed YUV formats) */
if ((desc->BindFlags & D3D11_BIND_RENDER_TARGET) == 0)
return mem;
dmem = GST_D3D11_MEMORY_CAST (mem);
switch (desc->Format) {
case DXGI_FORMAT_NV12:
case DXGI_FORMAT_P010:
case DXGI_FORMAT_P016:
/* Y component will be zero already */
rtv = gst_d3d11_memory_get_render_target_view (dmem, 1);
clear_func = (GstD3D11ClearRTVFunc) clear_rtv_chroma;
break;
case DXGI_FORMAT_AYUV:
rtv = gst_d3d11_memory_get_render_target_view (dmem, 0);
clear_func = (GstD3D11ClearRTVFunc) clear_rtv_vuya;
break;
default:
return mem;
}
if (!rtv)
return mem;
context_handle = gst_d3d11_device_get_device_context_handle (device);
GstD3D11DeviceLockGuard lk (device);
clear_func (context_handle, rtv);
return mem;
}
/**
* gst_d3d11_allocator_alloc:
* @allocator: (transfer none) (allow-none): a #GstD3D11Allocator
* @device: (transfer none): a #GstD3D11Device
* @desc: a D3D11_TEXTURE2D_DESC struct
*
* Returns: (transfer full) (nullable): a newly allocated #GstD3D11Memory with given parameters.
*
* Since: 1.22
*/
GstMemory *
gst_d3d11_allocator_alloc (GstD3D11Allocator * allocator,
GstD3D11Device * device, const D3D11_TEXTURE2D_DESC * desc)
{
GstMemory *mem;
if (!allocator) {
gst_d3d11_memory_init_once ();
allocator = _d3d11_memory_allocator;
}
g_return_val_if_fail (GST_IS_D3D11_ALLOCATOR (allocator), NULL);
g_return_val_if_fail (GST_IS_D3D11_DEVICE (device), NULL);
g_return_val_if_fail (desc != NULL, NULL);
mem = gst_d3d11_allocator_alloc_internal (allocator, device, desc, nullptr);
if (!mem)
return NULL;
if (!gst_d3d11_memory_update_size (mem)) {
GST_ERROR_OBJECT (allocator, "Failed to calculate size");
gst_memory_unref (mem);
return NULL;
}
return mem;
}
/**
* gst_d3d11_allocator_alloc_buffer:
* @allocator: (transfer none) (allow-none): a #GstD3D11Allocator
* @device: (transfer none): a #GstD3D11Device
* @desc: a D3D11_BUFFER_DESC struct
*
* Returns: (transfer full) (nullable): a newly allocated #GstD3D11Memory with given parameters.
*
* Since: 1.22
*/
GstMemory *
gst_d3d11_allocator_alloc_buffer (GstD3D11Allocator * allocator,
GstD3D11Device * device, const D3D11_BUFFER_DESC * desc)
{
GstD3D11Memory *mem;
ID3D11Buffer *buffer;
ID3D11Device *device_handle;
HRESULT hr;
if (!allocator) {
gst_d3d11_memory_init_once ();
allocator = _d3d11_memory_allocator;
}
g_return_val_if_fail (GST_IS_D3D11_ALLOCATOR (allocator), nullptr);
g_return_val_if_fail (GST_IS_D3D11_DEVICE (device), nullptr);
g_return_val_if_fail (desc != nullptr, nullptr);
if (desc->Usage != D3D11_USAGE_STAGING) {
GST_FIXME_OBJECT (allocator, "Non staging buffer is not supported");
return nullptr;
}
device_handle = gst_d3d11_device_get_device_handle (device);
hr = device_handle->CreateBuffer (desc, nullptr, &buffer);
if (!gst_d3d11_result (hr, device)) {
GST_ERROR_OBJECT (allocator, "Couldn't create buffer");
return nullptr;
}
mem = g_new0 (GstD3D11Memory, 1);
mem->priv = g_new0 (GstD3D11MemoryPrivate, 1);
gst_memory_init (GST_MEMORY_CAST (mem),
(GstMemoryFlags) 0, GST_ALLOCATOR_CAST (allocator), nullptr, 0, 0, 0, 0);
mem->priv->buffer = buffer;
mem->priv->buffer_desc = *desc;
mem->priv->native_type = GST_D3D11_MEMORY_NATIVE_TYPE_BUFFER;
mem->device = (GstD3D11Device *) gst_object_ref (device);
GST_MEMORY_CAST (mem)->maxsize = GST_MEMORY_CAST (mem)->size =
desc->ByteWidth;
return GST_MEMORY_CAST (mem);
}
/**
* gst_d3d11_allocator_alloc_wrapped:
* @allocator: (transfer none) (allow-none): a #GstD3D11Allocator
* @device: (transfer none): a #GstD3D11Device
* @texture: a ID3D11Texture2D
* @size: CPU accessible memory size
* @user_data: (allow-none): user data
* @notify: (allow-none): called with @user_data when the memory is freed
*
* Allocates memory object with @texture. The refcount of @texture
* will be increased by one.
*
* Caller should set valid CPU acessible memory value to @size
* (which is typically calculated by using staging texture and Map/Unmap)
* or zero is allowed. In that case, allocator will create a temporary staging
* texture to get the size and the temporary staging texture will be released.
*
* Caller must not be confused that @size is CPU accessible size, not raw
* texture size.
*
* Returns: (transfer full) (nullable): a newly allocated #GstD3D11Memory with given @texture
* if successful, or %NULL if @texture is not a valid handle or configuration
* is not supported.
*
* Since: 1.22
*/
GstMemory *
gst_d3d11_allocator_alloc_wrapped (GstD3D11Allocator * allocator,
GstD3D11Device * device, ID3D11Texture2D * texture, gsize size,
gpointer user_data, GDestroyNotify notify)
{
GstMemory *mem;
GstD3D11Memory *dmem;
D3D11_TEXTURE2D_DESC desc = { 0, };
ID3D11Texture2D *tex = nullptr;
HRESULT hr;
if (!allocator) {
gst_d3d11_memory_init_once ();
allocator = _d3d11_memory_allocator;
}
g_return_val_if_fail (GST_IS_D3D11_ALLOCATOR (allocator), nullptr);
g_return_val_if_fail (GST_IS_D3D11_DEVICE (device), nullptr);
g_return_val_if_fail (texture != nullptr, nullptr);
hr = texture->QueryInterface (IID_PPV_ARGS (&tex));
if (FAILED (hr)) {
GST_WARNING_OBJECT (allocator, "Not a valid texture handle");
return nullptr;
}
tex->GetDesc (&desc);
mem = gst_d3d11_allocator_alloc_internal (allocator, device, &desc, tex);
if (!mem)
return nullptr;
if (size == 0) {
if (!gst_d3d11_memory_update_size (mem)) {
GST_ERROR_OBJECT (allocator, "Failed to calculate size");
gst_memory_unref (mem);
return nullptr;
}
} else {
mem->maxsize = mem->size = size;
}
dmem = GST_D3D11_MEMORY_CAST (mem);
dmem->priv->user_data = user_data;
dmem->priv->notify = notify;
return mem;
}
/**
* gst_d3d11_allocator_set_active:
* @allocator: a #GstD3D11Allocator
* @active: the new active state
*
* Controls the active state of @allocator. Default #GstD3D11Allocator is
* stateless and therefore active state is ignored, but subclass implementation
* (e.g., #GstD3D11PoolAllocator) will require explicit active state control
* for its internal resource management.
*
* This method is conceptually identical to gst_buffer_pool_set_active method.
*
* Returns: %TRUE if active state of @allocator was successfully updated.
*
* Since: 1.22
*/
gboolean
gst_d3d11_allocator_set_active (GstD3D11Allocator * allocator, gboolean active)
{
GstD3D11AllocatorClass *klass;
g_return_val_if_fail (GST_IS_D3D11_ALLOCATOR (allocator), FALSE);
klass = GST_D3D11_ALLOCATOR_GET_CLASS (allocator);
if (klass->set_active)
return klass->set_active (allocator, active);
return TRUE;
}
/* GstD3D11PoolAllocator */
#define GST_D3D11_POOL_ALLOCATOR_GET_LOCK(alloc) \
(&(GST_D3D11_POOL_ALLOCATOR_CAST(alloc)->priv->lock))
#define GST_D3D11_POOL_ALLOCATOR_IS_FLUSHING(alloc) (g_atomic_int_get (&alloc->priv->flushing))
struct _GstD3D11PoolAllocatorPrivate
{
/* parent texture when array typed memory is used */
ID3D11Texture2D *texture;
D3D11_TEXTURE2D_DESC desc;
/* All below member variables are analogous to that of GstBufferPool */
GstAtomicQueue *queue;
GstPoll *poll;
/* This lock will protect all below variables apart from atomic ones
* (identical to GstBufferPool::priv::rec_lock) */
CRITICAL_SECTION lock;
gboolean started;
gboolean active;
/* atomic */
gint outstanding;
guint max_mems;
guint cur_mems;
gboolean flushing;
/* Calculated memory size, based on Direct3D11 staging texture map.
* Note that, we cannot know the actually staging texture memory size prior
* to map the staging texture because driver will likely require padding */
gsize mem_size;
};
static void gst_d3d11_pool_allocator_finalize (GObject * object);
static gboolean
gst_d3d11_pool_allocator_set_active (GstD3D11Allocator * allocator,
gboolean active);
static gboolean gst_d3d11_pool_allocator_start (GstD3D11PoolAllocator * self);
static gboolean gst_d3d11_pool_allocator_stop (GstD3D11PoolAllocator * self);
static gboolean gst_d3d11_memory_release (GstMiniObject * mini_object);
#define gst_d3d11_pool_allocator_parent_class pool_alloc_parent_class
G_DEFINE_TYPE_WITH_PRIVATE (GstD3D11PoolAllocator,
gst_d3d11_pool_allocator, GST_TYPE_D3D11_ALLOCATOR);
static void
gst_d3d11_pool_allocator_class_init (GstD3D11PoolAllocatorClass * klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GstD3D11AllocatorClass *d3d11alloc_class = GST_D3D11_ALLOCATOR_CLASS (klass);
gobject_class->finalize = gst_d3d11_pool_allocator_finalize;
d3d11alloc_class->set_active = gst_d3d11_pool_allocator_set_active;
}
static void
gst_d3d11_pool_allocator_init (GstD3D11PoolAllocator * allocator)
{
GstD3D11PoolAllocatorPrivate *priv;
priv = allocator->priv = (GstD3D11PoolAllocatorPrivate *)
gst_d3d11_pool_allocator_get_instance_private (allocator);
InitializeCriticalSection (&priv->lock);
priv->poll = gst_poll_new_timer ();
priv->queue = gst_atomic_queue_new (16);
priv->flushing = 1;
priv->active = FALSE;
priv->started = FALSE;
/* 1 control write for flushing - the flush token */
gst_poll_write_control (priv->poll);
/* 1 control write for marking that we are not waiting for poll - the wait token */
gst_poll_write_control (priv->poll);
}
static void
gst_d3d11_pool_allocator_finalize (GObject * object)
{
GstD3D11PoolAllocator *self = GST_D3D11_POOL_ALLOCATOR (object);
GstD3D11PoolAllocatorPrivate *priv = self->priv;
GST_DEBUG_OBJECT (self, "Finalize");
gst_d3d11_pool_allocator_stop (self);
gst_atomic_queue_unref (priv->queue);
gst_poll_free (priv->poll);
DeleteCriticalSection (&priv->lock);
GST_D3D11_CLEAR_COM (priv->texture);
gst_clear_object (&self->device);
G_OBJECT_CLASS (pool_alloc_parent_class)->finalize (object);
}
static gboolean
gst_d3d11_pool_allocator_start (GstD3D11PoolAllocator * self)
{
GstD3D11PoolAllocatorPrivate *priv = self->priv;
ID3D11Device *device_handle;
HRESULT hr;
guint i;
if (priv->started)
return TRUE;
/* Nothing to do */
if (priv->desc.ArraySize == 1) {
priv->started = TRUE;
return TRUE;
}
device_handle = gst_d3d11_device_get_device_handle (self->device);
if (!priv->texture) {
hr = device_handle->CreateTexture2D (&priv->desc, NULL, &priv->texture);
if (!gst_d3d11_result (hr, self->device)) {
GST_ERROR_OBJECT (self, "Failed to allocate texture");
return FALSE;
}
}
/* Pre-allocate memory objects */
for (i = 0; i < priv->desc.ArraySize; i++) {
GstMemory *mem;
priv->texture->AddRef ();
mem = gst_d3d11_allocator_alloc_wrapped_internal (_d3d11_memory_allocator,
self->device, &priv->desc, priv->texture);
if (i == 0) {
if (!gst_d3d11_memory_update_size (mem)) {
GST_ERROR_OBJECT (self, "Failed to calculate memory size");
gst_memory_unref (mem);
return FALSE;
}
priv->mem_size = mem->size;
} else {
mem->size = mem->maxsize = priv->mem_size;
}
GST_D3D11_MEMORY_CAST (mem)->priv->subresource_index = i;
g_atomic_int_add (&priv->cur_mems, 1);
gst_atomic_queue_push (priv->queue, mem);
gst_poll_write_control (priv->poll);
}
priv->started = TRUE;
return TRUE;
}
static void
gst_d3d11_pool_allocator_do_set_flushing (GstD3D11PoolAllocator * self,
gboolean flushing)
{
GstD3D11PoolAllocatorPrivate *priv = self->priv;
if (GST_D3D11_POOL_ALLOCATOR_IS_FLUSHING (self) == flushing)
return;
if (flushing) {
g_atomic_int_set (&priv->flushing, 1);
/* Write the flush token to wake up any waiters */
gst_poll_write_control (priv->poll);
} else {
while (!gst_poll_read_control (priv->poll)) {
if (errno == EWOULDBLOCK) {
/* This should not really happen unless flushing and unflushing
* happens on different threads. Let's wait a bit to get back flush
* token from the thread that was setting it to flushing */
g_thread_yield ();
continue;
} else {
/* Critical error but GstPoll already complained */
break;
}
}
g_atomic_int_set (&priv->flushing, 0);
}
}
static gboolean
gst_d3d11_pool_allocator_set_active (GstD3D11Allocator * allocator,
gboolean active)
{
GstD3D11PoolAllocator *self = GST_D3D11_POOL_ALLOCATOR (allocator);
GstD3D11PoolAllocatorPrivate *priv = self->priv;
GST_LOG_OBJECT (self, "active %d", active);
GstD3D11CSLockGuard lk (GST_D3D11_POOL_ALLOCATOR_GET_LOCK (self));
/* just return if we are already in the right state */
if (priv->active == active)
return TRUE;
if (active) {
if (!gst_d3d11_pool_allocator_start (self)) {
GST_ERROR_OBJECT (self, "start failed");
return FALSE;
}
/* flush_stop may release memory objects, setting to active to avoid running
* do_stop while activating the pool */
priv->active = TRUE;
gst_d3d11_pool_allocator_do_set_flushing (self, FALSE);
} else {
gint outstanding;
/* set to flushing first */
gst_d3d11_pool_allocator_do_set_flushing (self, TRUE);
/* when all memory objects are in the pool, free them. Else they will be
* freed when they are released */
outstanding = g_atomic_int_get (&priv->outstanding);
GST_LOG_OBJECT (self, "outstanding memories %d, (in queue %d)",
outstanding, gst_atomic_queue_length (priv->queue));
if (outstanding == 0) {
if (!gst_d3d11_pool_allocator_stop (self)) {
GST_ERROR_OBJECT (self, "stop failed");
return FALSE;
}
}
priv->active = FALSE;
}
return TRUE;
}
static void
gst_d3d11_pool_allocator_free_memory (GstD3D11PoolAllocator * self,
GstMemory * mem)
{
GstD3D11PoolAllocatorPrivate *priv = self->priv;
g_atomic_int_add (&priv->cur_mems, -1);
GST_LOG_OBJECT (self, "freeing memory %p (%u left)", mem, priv->cur_mems);
GST_MINI_OBJECT_CAST (mem)->dispose = NULL;
gst_memory_unref (mem);
}
/* must be called with the lock */
static gboolean
gst_d3d11_pool_allocator_clear_queue (GstD3D11PoolAllocator * self)
{
GstD3D11PoolAllocatorPrivate *priv = self->priv;
GstMemory *memory;
GST_LOG_OBJECT (self, "Clearing queue");
/* clear the pool */
while ((memory = (GstMemory *) gst_atomic_queue_pop (priv->queue))) {
while (!gst_poll_read_control (priv->poll)) {
if (errno == EWOULDBLOCK) {
/* We put the memory into the queue but did not finish writing control
* yet, let's wait a bit and retry */
g_thread_yield ();
continue;
} else {
/* Critical error but GstPoll already complained */
break;
}
}
gst_d3d11_pool_allocator_free_memory (self, memory);
}
GST_LOG_OBJECT (self, "Clear done");
return priv->cur_mems == 0;
}
/* must be called with the lock */
static gboolean
gst_d3d11_pool_allocator_stop (GstD3D11PoolAllocator * self)
{
GstD3D11PoolAllocatorPrivate *priv = self->priv;
GST_DEBUG_OBJECT (self, "Stop");
if (priv->started) {
if (!gst_d3d11_pool_allocator_clear_queue (self))
return FALSE;
priv->started = FALSE;
} else {
GST_DEBUG_OBJECT (self, "Wasn't started");
}
return TRUE;
}
static inline void
dec_outstanding (GstD3D11PoolAllocator * self)
{
if (g_atomic_int_dec_and_test (&self->priv->outstanding)) {
/* all memory objects are returned to the pool, see if we need to free them */
if (GST_D3D11_POOL_ALLOCATOR_IS_FLUSHING (self)) {
/* take the lock so that set_active is not run concurrently */
GstD3D11CSLockGuard lk (GST_D3D11_POOL_ALLOCATOR_GET_LOCK (self));
/* now that we have the lock, check if we have been de-activated with
* outstanding buffers */
if (!self->priv->active)
gst_d3d11_pool_allocator_stop (self);
}
}
}
static void
gst_d3d11_pool_allocator_release_memory (GstD3D11PoolAllocator * self,
GstMemory * mem)
{
GST_LOG_OBJECT (self, "Released memory %p", mem);
GST_MINI_OBJECT_CAST (mem)->dispose = NULL;
mem->allocator = (GstAllocator *) gst_object_ref (_d3d11_memory_allocator);
/* keep it around in our queue */
gst_atomic_queue_push (self->priv->queue, mem);
gst_poll_write_control (self->priv->poll);
dec_outstanding (self);
gst_object_unref (self);
}
static gboolean
gst_d3d11_memory_release (GstMiniObject * mini_object)
{
GstMemory *mem = GST_MEMORY_CAST (mini_object);
GstD3D11PoolAllocator *alloc;
g_assert (mem->allocator != NULL);
if (!GST_IS_D3D11_POOL_ALLOCATOR (mem->allocator)) {
GST_LOG_OBJECT (mem->allocator, "Not our memory, free");
return TRUE;
}
alloc = GST_D3D11_POOL_ALLOCATOR (mem->allocator);
/* if flushing, free this memory */
if (GST_D3D11_POOL_ALLOCATOR_IS_FLUSHING (alloc)) {
GST_LOG_OBJECT (alloc, "allocator is flushing, free %p", mem);
return TRUE;
}
/* return the memory to the allocator */
gst_memory_ref (mem);
gst_d3d11_pool_allocator_release_memory (alloc, mem);
return FALSE;
}
static GstFlowReturn
gst_d3d11_pool_allocator_alloc (GstD3D11PoolAllocator * self, GstMemory ** mem)
{
GstD3D11PoolAllocatorPrivate *priv = self->priv;
GstMemory *new_mem;
/* we allcates texture array during start */
if (priv->desc.ArraySize > 1)
return GST_FLOW_EOS;
/* increment the allocation counter */
g_atomic_int_add (&priv->cur_mems, 1);
new_mem = gst_d3d11_allocator_alloc_internal (_d3d11_memory_allocator,
self->device, &priv->desc, nullptr);
if (!new_mem) {
GST_ERROR_OBJECT (self, "Failed to allocate new memory");
g_atomic_int_add (&priv->cur_mems, -1);
return GST_FLOW_ERROR;
}
if (!priv->mem_size) {
if (!gst_d3d11_memory_update_size (new_mem)) {
GST_ERROR_OBJECT (self, "Failed to calculate size");
gst_memory_unref (new_mem);
g_atomic_int_add (&priv->cur_mems, -1);
return GST_FLOW_ERROR;
}
priv->mem_size = new_mem->size;
}
new_mem->size = new_mem->maxsize = priv->mem_size;
*mem = new_mem;
return GST_FLOW_OK;
}
static GstFlowReturn
gst_d3d11_pool_allocator_acquire_memory_internal (GstD3D11PoolAllocator * self,
GstMemory ** memory)
{
GstFlowReturn result;
GstD3D11PoolAllocatorPrivate *priv = self->priv;
while (TRUE) {
if (G_UNLIKELY (GST_D3D11_POOL_ALLOCATOR_IS_FLUSHING (self)))
goto flushing;
/* try to get a memory from the queue */
*memory = (GstMemory *) gst_atomic_queue_pop (priv->queue);
if (G_LIKELY (*memory)) {
while (!gst_poll_read_control (priv->poll)) {
if (errno == EWOULDBLOCK) {
/* We put the memory into the queue but did not finish writing control
* yet, let's wait a bit and retry */
g_thread_yield ();
continue;
} else {
/* Critical error but GstPoll already complained */
break;
}
}
result = GST_FLOW_OK;
GST_LOG_OBJECT (self, "acquired memory %p", *memory);
break;
}
/* no memory, try to allocate some more */
GST_LOG_OBJECT (self, "no memory, trying to allocate");
result = gst_d3d11_pool_allocator_alloc (self, memory);
if (G_LIKELY (result == GST_FLOW_OK))
/* we have a memory, return it */
break;
if (G_UNLIKELY (result != GST_FLOW_EOS))
/* something went wrong, return error */
break;
/* now we release the control socket, we wait for a memory release or
* flushing */
if (!gst_poll_read_control (priv->poll)) {
if (errno == EWOULDBLOCK) {
/* This means that we have two threads trying to allocate memory
* already, and the other one already got the wait token. This
* means that we only have to wait for the poll now and not write the
* token afterwards: we will be woken up once the other thread is
* woken up and that one will write the wait token it removed */
GST_LOG_OBJECT (self, "waiting for free memory or flushing");
gst_poll_wait (priv->poll, GST_CLOCK_TIME_NONE);
} else {
/* This is a critical error, GstPoll already gave a warning */
result = GST_FLOW_ERROR;
break;
}
} else {
/* We're the first thread waiting, we got the wait token and have to
* write it again later
* OR
* We're a second thread and just consumed the flush token and block all
* other threads, in which case we must not wait and give it back
* immediately */
if (!GST_D3D11_POOL_ALLOCATOR_IS_FLUSHING (self)) {
GST_LOG_OBJECT (self, "waiting for free memory or flushing");
gst_poll_wait (priv->poll, GST_CLOCK_TIME_NONE);
}
gst_poll_write_control (priv->poll);
}
}
return result;
/* ERRORS */
flushing:
{
GST_DEBUG_OBJECT (self, "we are flushing");
return GST_FLOW_FLUSHING;
}
}
/**
* gst_d3d11_pool_allocator_new:
* @device: a #GstD3D11Device
* @desc: a D3D11_TEXTURE2D_DESC for texture allocation
*
* Creates a new #GstD3D11PoolAllocator instance.
*
* Returns: (transfer full): a new #GstD3D11PoolAllocator instance
*
* Since: 1.22
*/
GstD3D11PoolAllocator *
gst_d3d11_pool_allocator_new (GstD3D11Device * device,
const D3D11_TEXTURE2D_DESC * desc)
{
GstD3D11PoolAllocator *self;
g_return_val_if_fail (GST_IS_D3D11_DEVICE (device), NULL);
g_return_val_if_fail (desc != NULL, NULL);
gst_d3d11_memory_init_once ();
self = (GstD3D11PoolAllocator *)
g_object_new (GST_TYPE_D3D11_POOL_ALLOCATOR, NULL);
gst_object_ref_sink (self);
self->device = (GstD3D11Device *) gst_object_ref (device);
self->priv->desc = *desc;
return self;
}
/**
* gst_d3d11_pool_allocator_acquire_memory:
* @allocator: a #GstD3D11PoolAllocator
* @memory: (out): a #GstMemory
*
* Acquires a #GstMemory from @allocator. @memory should point to a memory
* location that can hold a pointer to the new #GstMemory.
*
* Returns: a #GstFlowReturn such as %GST_FLOW_FLUSHING when the allocator is
* inactive.
*/
GstFlowReturn
gst_d3d11_pool_allocator_acquire_memory (GstD3D11PoolAllocator * allocator,
GstMemory ** memory)
{
GstD3D11PoolAllocatorPrivate *priv;
GstFlowReturn result;
g_return_val_if_fail (GST_IS_D3D11_POOL_ALLOCATOR (allocator),
GST_FLOW_ERROR);
g_return_val_if_fail (memory != NULL, GST_FLOW_ERROR);
priv = allocator->priv;
/* assume we'll have one more outstanding buffer we need to do that so
* that concurrent set_active doesn't clear the buffers */
g_atomic_int_inc (&priv->outstanding);
result = gst_d3d11_pool_allocator_acquire_memory_internal (allocator, memory);
if (result == GST_FLOW_OK) {
GstMemory *mem = *memory;
/* Replace default allocator with ours */
gst_object_unref (mem->allocator);
mem->allocator = (GstAllocator *) gst_object_ref (allocator);
GST_MINI_OBJECT_CAST (mem)->dispose = gst_d3d11_memory_release;
} else {
dec_outstanding (allocator);
}
return result;
}
/**
* gst_d3d11_pool_allocator_get_pool_size:
* @allocator: a #GstD3D11PoolAllocator
* @max_size: (out) (optional): the max size of pool
* @outstanding_size: (out) (optional): the number of outstanding memory
*
* Returns: %TRUE if the size of memory pool is known
*
* Since: 1.22
*/
gboolean
gst_d3d11_pool_allocator_get_pool_size (GstD3D11PoolAllocator * allocator,
guint * max_size, guint * outstanding_size)
{
GstD3D11PoolAllocatorPrivate *priv;
g_return_val_if_fail (GST_IS_D3D11_POOL_ALLOCATOR (allocator), FALSE);
priv = allocator->priv;
if (max_size) {
if (priv->desc.ArraySize > 1) {
*max_size = priv->desc.ArraySize;
} else {
/* For non-texture-array memory, we don't have any limit yet */
*max_size = 0;
}
}
if (outstanding_size)
*outstanding_size = g_atomic_int_get (&priv->outstanding);
return TRUE;
}
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