--- /dev/null
+/* GStreamer
+ * Copyright (C) 2022 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 "gstd3d11stagingbufferpool.h"
+#include "gstd3d11memory.h"
+#include "gstd3d11device.h"
+#include "gstd3d11utils.h"
+
+#include <string.h>
+
+GST_DEBUG_CATEGORY_STATIC (gst_d3d11_staging_buffer_pool_debug);
+#define GST_CAT_DEFAULT gst_d3d11_staging_buffer_pool_debug
+
+struct _GstD3D11StagingBufferPoolPrivate
+{
+ GstVideoInfo info;
+
+ D3D11_TEXTURE2D_DESC desc[GST_VIDEO_MAX_PLANES];
+ GstD3D11Allocator *alloc[GST_VIDEO_MAX_PLANES];
+ gint stride[GST_VIDEO_MAX_PLANES];
+ gsize offset[GST_VIDEO_MAX_PLANES];
+};
+
+#define gst_d3d11_staging_buffer_pool_parent_class parent_class
+G_DEFINE_TYPE_WITH_PRIVATE (GstD3D11StagingBufferPool,
+ gst_d3d11_staging_buffer_pool, GST_TYPE_BUFFER_POOL);
+
+static void gst_d3d11_staging_buffer_pool_dispose (GObject * object);
+static const gchar **gst_d3d11_staging_buffer_pool_get_options (GstBufferPool *
+ pool);
+static gboolean gst_d3d11_staging_buffer_pool_set_config (GstBufferPool * pool,
+ GstStructure * config);
+static GstFlowReturn gst_d3d11_staging_buffer_pool_alloc_buffer (GstBufferPool *
+ pool, GstBuffer ** buffer, GstBufferPoolAcquireParams * params);
+static gboolean gst_d3d11_staging_buffer_pool_start (GstBufferPool * pool);
+static gboolean gst_d3d11_staging_buffer_pool_stop (GstBufferPool * pool);
+
+static void
+gst_d3d11_staging_buffer_pool_class_init (GstD3D11StagingBufferPoolClass *
+ klass)
+{
+ GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
+ GstBufferPoolClass *bufferpool_class = GST_BUFFER_POOL_CLASS (klass);
+
+ gobject_class->dispose = gst_d3d11_staging_buffer_pool_dispose;
+
+ bufferpool_class->get_options = gst_d3d11_staging_buffer_pool_get_options;
+ bufferpool_class->set_config = gst_d3d11_staging_buffer_pool_set_config;
+ bufferpool_class->alloc_buffer = gst_d3d11_staging_buffer_pool_alloc_buffer;
+ bufferpool_class->start = gst_d3d11_staging_buffer_pool_start;
+ bufferpool_class->stop = gst_d3d11_staging_buffer_pool_stop;
+
+ GST_DEBUG_CATEGORY_INIT (gst_d3d11_staging_buffer_pool_debug,
+ "d3d11stagingbufferpool", 0, "d3d11stagingbufferpool object");
+}
+
+static void
+gst_d3d11_staging_buffer_pool_init (GstD3D11StagingBufferPool * self)
+{
+ self->priv = (GstD3D11StagingBufferPoolPrivate *)
+ gst_d3d11_staging_buffer_pool_get_instance_private (self);
+}
+
+static void
+gst_d3d11_staging_buffer_pool_clear_allocator (GstD3D11StagingBufferPool * self)
+{
+ GstD3D11StagingBufferPoolPrivate *priv = self->priv;
+
+ for (guint i = 0; i < G_N_ELEMENTS (priv->alloc); i++) {
+ if (priv->alloc[i]) {
+ gst_d3d11_allocator_set_active (priv->alloc[i], FALSE);
+ gst_clear_object (&priv->alloc[i]);
+ }
+ }
+}
+
+static void
+gst_d3d11_staging_buffer_pool_dispose (GObject * object)
+{
+ GstD3D11StagingBufferPool *self = GST_D3D11_STAGING_BUFFER_POOL (object);
+
+ gst_clear_object (&self->device);
+ gst_d3d11_staging_buffer_pool_clear_allocator (self);
+
+ G_OBJECT_CLASS (parent_class)->dispose (object);
+}
+
+static const gchar **
+gst_d3d11_staging_buffer_pool_get_options (GstBufferPool * pool)
+{
+ /* NOTE: d3d11 memory does not support alignment */
+ static const gchar *options[] =
+ { GST_BUFFER_POOL_OPTION_VIDEO_META, nullptr };
+
+ return options;
+}
+
+static gboolean
+gst_d3d11_staging_buffer_pool_set_config (GstBufferPool * pool,
+ GstStructure * config)
+{
+ GstD3D11StagingBufferPool *self = GST_D3D11_STAGING_BUFFER_POOL (pool);
+ GstD3D11StagingBufferPoolPrivate *priv = self->priv;
+ GstVideoInfo info;
+ GstCaps *caps = nullptr;
+ guint min_buffers, max_buffers;
+ D3D11_TEXTURE2D_DESC *desc;
+ const GstD3D11Format *format;
+ gsize offset = 0;
+
+ if (!gst_buffer_pool_config_get_params (config, &caps, nullptr, &min_buffers,
+ &max_buffers))
+ goto wrong_config;
+
+ if (caps == nullptr)
+ goto no_caps;
+
+ /* now parse the caps from the config */
+ if (!gst_video_info_from_caps (&info, caps))
+ goto wrong_caps;
+
+ format = gst_d3d11_device_format_from_gst (self->device,
+ GST_VIDEO_INFO_FORMAT (&info));
+ if (!format)
+ goto wrong_caps;
+
+ GST_LOG_OBJECT (pool, "%dx%d, caps %" GST_PTR_FORMAT, info.width, info.height,
+ caps);
+
+ gst_d3d11_staging_buffer_pool_clear_allocator (self);
+
+ memset (priv->stride, 0, sizeof (priv->stride));
+ memset (priv->offset, 0, sizeof (priv->offset));
+ memset (priv->desc, 0, sizeof (priv->desc));
+
+ if (format->dxgi_format == DXGI_FORMAT_UNKNOWN) {
+ for (guint i = 0; i < GST_VIDEO_INFO_N_PLANES (&info); i++) {
+ desc = &priv->desc[i];
+
+ desc->Width = GST_VIDEO_INFO_COMP_WIDTH (&info, i);
+ desc->Height = GST_VIDEO_INFO_COMP_HEIGHT (&info, i);
+ desc->MipLevels = 1;
+ desc->ArraySize = 1;
+ desc->Format = format->resource_format[i];
+ desc->SampleDesc.Count = 1;
+ desc->Usage = D3D11_USAGE_STAGING;
+ desc->CPUAccessFlags = D3D11_CPU_ACCESS_READ | D3D11_CPU_ACCESS_WRITE;
+ }
+ } else {
+ guint width, height;
+
+ desc = &priv->desc[0];
+
+ width = GST_VIDEO_INFO_WIDTH (&info);
+ height = GST_VIDEO_INFO_WIDTH (&info);
+
+ /* resolution of semi-planar formats must be multiple of 2 */
+ switch (format->dxgi_format) {
+ case DXGI_FORMAT_NV12:
+ case DXGI_FORMAT_P010:
+ case DXGI_FORMAT_P016:
+ width = GST_ROUND_UP_2 (width);
+ height = GST_ROUND_UP_2 (height);
+ break;
+ default:
+ break;
+ }
+
+ desc->Width = width;
+ desc->Height = height;
+ desc->MipLevels = 1;
+ desc->ArraySize = 1;
+ desc->Format = format->dxgi_format;
+ desc->SampleDesc.Count = 1;
+ desc->Usage = D3D11_USAGE_STAGING;
+ desc->CPUAccessFlags = D3D11_CPU_ACCESS_READ | D3D11_CPU_ACCESS_WRITE;
+ }
+
+ offset = 0;
+ for (guint i = 0; i < GST_VIDEO_MAX_PLANES; i++) {
+ GstD3D11Allocator *alloc;
+ GstD3D11PoolAllocator *pool_alloc;
+ GstFlowReturn flow_ret;
+ GstMemory *mem = nullptr;
+ guint stride = 0;
+
+ if (priv->desc[i].Format == DXGI_FORMAT_UNKNOWN)
+ break;
+
+ alloc =
+ (GstD3D11Allocator *) gst_d3d11_pool_allocator_new (self->device,
+ &priv->desc[i]);
+ if (!gst_d3d11_allocator_set_active (alloc, TRUE)) {
+ GST_ERROR_OBJECT (self, "Failed to activate allocator");
+ gst_object_unref (alloc);
+ return FALSE;
+ }
+
+ pool_alloc = GST_D3D11_POOL_ALLOCATOR (alloc);
+ flow_ret = gst_d3d11_pool_allocator_acquire_memory (pool_alloc, &mem);
+ if (flow_ret != GST_FLOW_OK) {
+ GST_ERROR_OBJECT (self, "Failed to allocate initial memory");
+ gst_d3d11_allocator_set_active (alloc, FALSE);
+ gst_object_unref (alloc);
+ return FALSE;
+ }
+
+ if (!gst_d3d11_memory_get_texture_stride (GST_D3D11_MEMORY_CAST (mem),
+ &stride) || stride < priv->desc[i].Width) {
+ GST_ERROR_OBJECT (self, "Failed to calculate stride");
+
+ gst_d3d11_allocator_set_active (alloc, FALSE);
+ gst_object_unref (alloc);
+ gst_memory_unref (mem);
+
+ return FALSE;
+ }
+
+ priv->stride[i] = stride;
+ priv->offset[i] = offset;
+ offset += mem->size;
+
+ priv->alloc[i] = alloc;
+
+ gst_memory_unref (mem);
+ }
+
+ /* single texture semi-planar formats */
+ if (format->dxgi_format != DXGI_FORMAT_UNKNOWN &&
+ GST_VIDEO_INFO_N_PLANES (&info) == 2) {
+ priv->stride[1] = priv->stride[0];
+ priv->offset[1] = priv->stride[0] * priv->desc[0].Height;
+ }
+
+ gst_buffer_pool_config_set_params (config,
+ caps, offset, min_buffers, max_buffers);
+
+ priv->info = info;
+
+ return GST_BUFFER_POOL_CLASS (parent_class)->set_config (pool, config);
+
+ /* ERRORS */
+wrong_config:
+ {
+ GST_WARNING_OBJECT (pool, "invalid config");
+ return FALSE;
+ }
+no_caps:
+ {
+ GST_WARNING_OBJECT (pool, "no caps in config");
+ return FALSE;
+ }
+wrong_caps:
+ {
+ GST_WARNING_OBJECT (pool,
+ "failed getting geometry from caps %" GST_PTR_FORMAT, caps);
+ return FALSE;
+ }
+}
+
+static GstFlowReturn
+gst_d3d11_staging_buffer_pool_fill_buffer (GstD3D11StagingBufferPool * self,
+ GstBuffer * buf)
+{
+ GstD3D11StagingBufferPoolPrivate *priv = self->priv;
+ GstFlowReturn ret = GST_FLOW_OK;
+
+ for (guint i = 0; i < G_N_ELEMENTS (priv->alloc); i++) {
+ GstMemory *mem = nullptr;
+ GstD3D11PoolAllocator *alloc = GST_D3D11_POOL_ALLOCATOR (priv->alloc[i]);
+
+ if (!alloc)
+ break;
+
+ ret = gst_d3d11_pool_allocator_acquire_memory (alloc, &mem);
+ if (ret != GST_FLOW_OK) {
+ GST_WARNING_OBJECT (self, "Failed to acquire memory, ret %s",
+ gst_flow_get_name (ret));
+ return ret;
+ }
+
+ gst_buffer_append_memory (buf, mem);
+ }
+
+ return GST_FLOW_OK;
+}
+
+static GstFlowReturn
+gst_d3d11_staging_buffer_pool_alloc_buffer (GstBufferPool * pool,
+ GstBuffer ** buffer, GstBufferPoolAcquireParams * params)
+{
+ GstD3D11StagingBufferPool *self = GST_D3D11_STAGING_BUFFER_POOL (pool);
+ GstD3D11StagingBufferPoolPrivate *priv = self->priv;
+ GstVideoInfo *info = &priv->info;
+ GstBuffer *buf;
+ GstFlowReturn ret = GST_FLOW_OK;
+
+ buf = gst_buffer_new ();
+ ret = gst_d3d11_staging_buffer_pool_fill_buffer (self, buf);
+ if (ret != GST_FLOW_OK) {
+ gst_buffer_unref (buf);
+ return ret;
+ }
+
+ gst_buffer_add_video_meta_full (buf, GST_VIDEO_FRAME_FLAG_NONE,
+ GST_VIDEO_INFO_FORMAT (info), GST_VIDEO_INFO_WIDTH (info),
+ GST_VIDEO_INFO_HEIGHT (info), GST_VIDEO_INFO_N_PLANES (info),
+ priv->offset, priv->stride);
+
+ *buffer = buf;
+
+ return GST_FLOW_OK;
+}
+
+static gboolean
+gst_d3d11_staging_buffer_pool_start (GstBufferPool * pool)
+{
+ GstD3D11StagingBufferPool *self = GST_D3D11_STAGING_BUFFER_POOL (pool);
+ GstD3D11StagingBufferPoolPrivate *priv = self->priv;
+ gboolean ret;
+
+ GST_DEBUG_OBJECT (self, "Start");
+
+ for (guint i = 0; i < G_N_ELEMENTS (priv->alloc); i++) {
+ GstD3D11Allocator *alloc = priv->alloc[i];
+
+ if (!alloc)
+ break;
+
+ if (!gst_d3d11_allocator_set_active (alloc, TRUE)) {
+ GST_ERROR_OBJECT (self, "Failed to activate allocator");
+ return FALSE;
+ }
+ }
+
+ ret = GST_BUFFER_POOL_CLASS (parent_class)->start (pool);
+ if (!ret) {
+ GST_ERROR_OBJECT (self, "Failed to start");
+
+ for (guint i = 0; i < G_N_ELEMENTS (priv->alloc); i++) {
+ GstD3D11Allocator *alloc = priv->alloc[i];
+
+ if (!alloc)
+ break;
+
+ gst_d3d11_allocator_set_active (alloc, FALSE);
+ }
+
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+static gboolean
+gst_d3d11_staging_buffer_pool_stop (GstBufferPool * pool)
+{
+ GstD3D11StagingBufferPool *self = GST_D3D11_STAGING_BUFFER_POOL (pool);
+ GstD3D11StagingBufferPoolPrivate *priv = self->priv;
+
+ GST_DEBUG_OBJECT (self, "Stop");
+
+ for (guint i = 0; i < G_N_ELEMENTS (priv->alloc); i++) {
+ GstD3D11Allocator *alloc = priv->alloc[i];
+
+ if (!alloc)
+ break;
+
+ if (!gst_d3d11_allocator_set_active (alloc, FALSE)) {
+ GST_ERROR_OBJECT (self, "Failed to deactivate allocator");
+ return FALSE;
+ }
+ }
+
+ return GST_BUFFER_POOL_CLASS (parent_class)->stop (pool);
+}
+
+/**
+ * gst_d3d11_staging_buffer_pool_new:
+ * @device: a #GstD3D11Device to use
+ *
+ * Returns: a #GstBufferPool that allocates buffers with #GstD3D11Memory
+ * which hold Direct3D11 staging texture allocated with D3D11_USAGE_STAGING
+ * flag, instead of D3D11_USAGE_DEFAULT. The staging texture can be used for
+ * optimized resource upload/download.
+ *
+ * Since: 1.22
+ */
+GstBufferPool *
+gst_d3d11_staging_buffer_pool_new (GstD3D11Device * device)
+{
+ GstD3D11StagingBufferPool *pool;
+
+ g_return_val_if_fail (GST_IS_D3D11_DEVICE (device), nullptr);
+
+ pool = (GstD3D11StagingBufferPool *)
+ g_object_new (GST_TYPE_D3D11_STAGING_BUFFER_POOL, nullptr);
+ gst_object_ref_sink (pool);
+
+ pool->device = (GstD3D11Device *) gst_object_ref (device);
+
+ return GST_BUFFER_POOL_CAST (pool);
+}
projects / platform / upstream / gstreamer.git / commitdiff