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gstreamer/subprojects/gst-plugins-bad/gst-libs/gst/d3d11/gstd3d11memory.cpp
Seungha Yang 0deb73d9ba d3d11memory: Clear YUV texture with black color 
We prefer black color as an initial texture color and
Direct3D11 runtime will initialize texture with zeros (except for alpha)
which is fine for RGB formats. But UV components of YUV texture
requires manual clear for black color.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2502>
2022-05-27 14:03:49 +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"
GST_DEBUG_CATEGORY_STATIC (gst_d3d11_allocator_debug);
#define GST_CAT_DEFAULT gst_d3d11_allocator_debug
static GstAllocator *_d3d11_memory_allocator;
/* 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 Direct3D11 texture
*
* Create #GstD3D11AllocationParams object which is used by #GstD3D11BufferPool
* and #GstD3D11Allocator in order to allocate new ID3D11Texture2D
* object with given configuration
*
* Returns: a #GstD3D11AllocationParams or %NULL if @info is not supported
*
* Since: 1.20
*/
GstD3D11AllocationParams *
gst_d3d11_allocation_params_new (GstD3D11Device * device, GstVideoInfo * info,
GstD3D11AllocationFlags flags, guint bind_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;
}
} 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->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: 1.20
*/
gboolean
gst_d3d11_allocation_params_alignment (GstD3D11AllocationParams * params,
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: a copy of @src
*
* Since: 1.20
*/
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: 1.20
*/
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))
#define GST_D3D11_MEMORY_LOCK(m) G_STMT_START { \
GST_TRACE("Locking %p from thread %p", (m), g_thread_self()); \
g_mutex_lock(GST_D3D11_MEMORY_GET_LOCK(m)); \
GST_TRACE("Locked %p from thread %p", (m), g_thread_self()); \
} G_STMT_END
#define GST_D3D11_MEMORY_UNLOCK(m) G_STMT_START { \
GST_TRACE("Unlocking %p from thread %p", (m), g_thread_self()); \
g_mutex_unlock(GST_D3D11_MEMORY_GET_LOCK(m)); \
} G_STMT_END
struct _GstD3D11MemoryPrivate
{
ID3D11Texture2D *texture;
ID3D11Buffer *buffer;
ID3D11Resource *staging;
D3D11_TEXTURE2D_DESC desc;
D3D11_BUFFER_DESC buffer_desc;
guint subresource_index;
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;
ID3D11VideoProcessorInputView *processor_input_view;
ID3D11VideoProcessorOutputView *processor_output_view;
D3D11_MAPPED_SUBRESOURCE map;
GstD3D11MemoryNativeType native_type;
GMutex lock;
gint cpu_map_count;
};
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;
gpointer ret = NULL;
gst_d3d11_device_lock (dmem->device);
GST_D3D11_MEMORY_LOCK (dmem);
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);
ret = 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);
ret = priv->texture;
goto out;
}
}
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");
goto out;
}
/* 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");
goto out;
}
}
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++;
ret = dmem->priv->map.pData;
out:
GST_D3D11_MEMORY_UNLOCK (dmem);
gst_d3d11_device_unlock (dmem->device);
return ret;
}
/* 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;
gst_d3d11_device_lock (dmem->device);
GST_D3D11_MEMORY_LOCK (dmem);
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);
goto out;
}
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)
goto out;
gst_d3d11_memory_unmap_cpu_access (dmem);
out:
GST_D3D11_MEMORY_UNLOCK (dmem);
gst_d3d11_device_unlock (dmem->device);
}
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;
gboolean ret = FALSE;
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;
}
GST_MINI_OBJECT_FLAG_SET (mem, GST_D3D11_MEMORY_TRANSFER_NEED_DOWNLOAD);
}
gst_d3d11_device_lock (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");
goto out;
}
mem->maxsize = mem->size = size;
ret = TRUE;
out:
gst_d3d11_device_unlock (dmem->device);
return ret;
}
/**
* gst_is_d3d11_memory:
* @mem: a #GstMemory
*
* Returns: whether @mem is a #GstD3D11Memory
*
* Since: 1.20
*/
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: 1.20
*/
void
gst_d3d11_memory_init_once (void)
{
static gsize _init = 0;
if (g_once_init_enter (&_init)) {
GST_DEBUG_CATEGORY_INIT (gst_d3d11_allocator_debug, "d3d11allocator", 0,
"Direct3D11 Texture Allocator");
_d3d11_memory_allocator =
(GstAllocator *) g_object_new (GST_TYPE_D3D11_ALLOCATOR, NULL);
gst_object_ref_sink (_d3d11_memory_allocator);
gst_allocator_register (GST_D3D11_MEMORY_NAME, _d3d11_memory_allocator);
g_once_init_leave (&_init, 1);
}
}
/**
* gst_d3d11_memory_get_resource_handle:
* @mem: a #GstD3D11Memory
*
* Returns: (transfer none): 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: 1.20
*/
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: 1.20
*/
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;
gboolean ret = FALSE;
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;
}
GST_D3D11_MEMORY_LOCK (mem);
if (priv->num_shader_resource_views) {
ret = TRUE;
goto done;
}
ret = create_shader_resource_views (mem);
done:
GST_D3D11_MEMORY_UNLOCK (mem);
return ret;
}
/**
* 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: 1.20
*/
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: 1.20
*/
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;
gboolean ret = FALSE;
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;
}
GST_D3D11_MEMORY_LOCK (mem);
if (priv->num_render_target_views) {
ret = TRUE;
goto done;
}
ret = create_render_target_views (mem);
done:
GST_D3D11_MEMORY_UNLOCK (mem);
return ret;
}
/**
* 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: 1.20
*/
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: 1.20
*/
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, GUID * decoder_profile)
{
GstD3D11MemoryPrivate *dmem_priv = mem->priv;
GstD3D11Allocator *allocator;
D3D11_VIDEO_DECODER_OUTPUT_VIEW_DESC desc;
HRESULT hr;
gboolean ret = FALSE;
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;
}
GST_D3D11_MEMORY_LOCK (mem);
if (dmem_priv->decoder_output_view) {
dmem_priv->decoder_output_view->GetDesc (&desc);
if (IsEqualGUID (desc.DecodeProfile, *decoder_profile)) {
goto succeeded;
} 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);
}
}
if (dmem_priv->decoder_output_view)
goto succeeded;
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);
goto done;
}
succeeded:
ret = TRUE;
done:
GST_D3D11_MEMORY_UNLOCK (mem);
return ret;
}
/**
* gst_d3d11_memory_get_decoder_output_view:
* @mem: a #GstD3D11Memory
*
* Returns: (transfer none) (nullable): a pointer to the
* ID3D11VideoDecoderOutputView or %NULL if ID3D11VideoDecoderOutputView is
* unavailable
*
* Since: 1.20
*/
ID3D11VideoDecoderOutputView *
gst_d3d11_memory_get_decoder_output_view (GstD3D11Memory * mem,
ID3D11VideoDevice * video_device, 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_profile != NULL, NULL);
if (!gst_d3d11_memory_ensure_decoder_output_view (mem,
video_device, 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;
gboolean ret = FALSE;
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;
}
GST_D3D11_MEMORY_LOCK (mem);
if (dmem_priv->processor_input_view)
goto succeeded;
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);
goto done;
}
succeeded:
ret = TRUE;
done:
GST_D3D11_MEMORY_UNLOCK (mem);
return ret;
}
/**
* 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: 1.20
*/
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;
gboolean ret;
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;
}
GST_D3D11_MEMORY_LOCK (mem);
if (priv->processor_output_view)
goto succeeded;
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);
goto done;
}
succeeded:
ret = TRUE;
done:
GST_D3D11_MEMORY_UNLOCK (mem);
return ret;
}
/**
* 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: 1.20
*/
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);
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;
ID3D11Device *device_handle = gst_d3d11_device_get_device_handle (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;
HRESULT hr;
UINT bind_flags = 0;
UINT supported_flags = 0;
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);
}
gst_d3d11_device_lock (device);
if (!gst_memory_map (mem, &info,
(GstMapFlags) (GST_MAP_READ | GST_MAP_D3D11))) {
gst_d3d11_device_unlock (device);
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;
/* If supported, use bind flags for SRV/RTV */
hr = device_handle->CheckFormatSupport (src_desc.Format, &supported_flags);
if (gst_d3d11_result (hr, device)) {
if ((supported_flags & D3D11_FORMAT_SUPPORT_SHADER_SAMPLE) ==
D3D11_FORMAT_SUPPORT_SHADER_SAMPLE) {
bind_flags |= D3D11_BIND_SHADER_RESOURCE;
}
if ((supported_flags & D3D11_FORMAT_SUPPORT_RENDER_TARGET) ==
D3D11_FORMAT_SUPPORT_RENDER_TARGET) {
bind_flags |= D3D11_BIND_RENDER_TARGET;
}
}
copy = gst_d3d11_allocator_alloc_internal (alloc, device, &dst_desc);
if (!copy) {
gst_memory_unmap (mem, &info);
gst_d3d11_device_unlock (device);
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);
gst_d3d11_device_unlock (device);
/* 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_clear_object (&dmem->device);
g_mutex_clear (&dmem_priv->lock);
g_free (dmem->priv);
g_free (dmem);
}
static GstMemory *
gst_d3d11_allocator_alloc_wrapped (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);
g_mutex_init (&mem->priv->lock);
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 = NULL;
ID3D11Device *device_handle;
ID3D11DeviceContext *context_handle;
HRESULT hr;
GstMemory *mem;
GstD3D11Memory *dmem;
ID3D11RenderTargetView *rtv = nullptr;
GstD3D11ClearRTVFunc clear_func = nullptr;
device_handle = gst_d3d11_device_get_device_handle (device);
hr = device_handle->CreateTexture2D (desc, NULL, &texture);
if (!gst_d3d11_result (hr, device)) {
GST_ERROR_OBJECT (self, "Couldn't create texture");
return NULL;
}
mem = gst_d3d11_allocator_alloc_wrapped (self, device, desc, texture);
if (!mem)
return nullptr;
/* 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);
gst_d3d11_device_lock (device);
clear_func (context_handle, rtv);
gst_d3d11_device_unlock (device);
return mem;
}
/**
* gst_d3d11_allocator_alloc:
* @allocator: a #GstD3D11Allocator
* @device: a #GstD3D11Device
* @desc: a D3D11_TEXTURE2D_DESC struct
*
* Returns: a newly allocated #GstD3D11Memory with given parameters.
*
* Since: 1.20
*/
GstMemory *
gst_d3d11_allocator_alloc (GstD3D11Allocator * allocator,
GstD3D11Device * device, const D3D11_TEXTURE2D_DESC * desc)
{
GstMemory *mem;
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);
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: a #GstD3D11Allocator
* @device: a #GstD3D11Device
* @desc: a D3D11_BUFFER_DESC struct
*
* Returns: 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;
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);
g_mutex_init (&mem->priv->lock);
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);
}
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_actvie)
return klass->set_actvie (allocator, active);
return TRUE;
}
/* GstD3D11PoolAllocator */
#define GST_D3D11_POOL_ALLOCATOR_LOCK(alloc) (g_rec_mutex_lock(&alloc->priv->lock))
#define GST_D3D11_POOL_ALLOCATOR_UNLOCK(alloc) (g_rec_mutex_unlock(&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) */
GRecMutex 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_dispose (GObject * object);
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->dispose = gst_d3d11_pool_allocator_dispose;
gobject_class->finalize = gst_d3d11_pool_allocator_finalize;
d3d11alloc_class->set_actvie = 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);
g_rec_mutex_init (&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_dispose (GObject * object)
{
GstD3D11PoolAllocator *self = GST_D3D11_POOL_ALLOCATOR (object);
gst_clear_object (&self->device);
G_OBJECT_CLASS (pool_alloc_parent_class)->dispose (object);
}
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);
g_rec_mutex_clear (&priv->lock);
GST_D3D11_CLEAR_COM (priv->texture);
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 (GST_D3D11_ALLOCATOR_CAST
(_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);
GST_D3D11_POOL_ALLOCATOR_LOCK (self);
/* just return if we are already in the right state */
if (priv->active == active)
goto was_ok;
if (active) {
if (!gst_d3d11_pool_allocator_start (self))
goto start_failed;
/* 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))
goto stop_failed;
}
priv->active = FALSE;
}
GST_D3D11_POOL_ALLOCATOR_UNLOCK (self);
return TRUE;
was_ok:
{
GST_DEBUG_OBJECT (self, "allocator was in the right state");
GST_D3D11_POOL_ALLOCATOR_UNLOCK (self);
return TRUE;
}
start_failed:
{
GST_ERROR_OBJECT (self, "start failed");
GST_D3D11_POOL_ALLOCATOR_UNLOCK (self);
return FALSE;
}
stop_failed:
{
GST_ERROR_OBJECT (self, "stop failed");
GST_D3D11_POOL_ALLOCATOR_UNLOCK (self);
return FALSE;
}
}
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 */
GST_D3D11_POOL_ALLOCATOR_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);
GST_D3D11_POOL_ALLOCATOR_UNLOCK (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);
gst_object_unref (self);
/* keep it around in our queue */
gst_atomic_queue_push (self->priv->queue, mem);
gst_poll_write_control (self->priv->poll);
dec_outstanding (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 (GST_D3D11_ALLOCATOR_CAST
(_d3d11_memory_allocator), self->device, &priv->desc);
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
*/
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: (transfer full): 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: 1.20
*/
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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