gstreamer/subprojects/gst-plugins-bad/sys/d3d11/gstd3d11mpeg2dec.cpp

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/* GStreamer
* Copyright (C) 2021 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.
*/
/**
* SECTION:element-d3d11mpeg2dec
* @title: d3d11mpeg2dec
*
* A Direct3D11/DXVA based MPEG-2 video decoder
*
* ## Example launch line
* ```
* gst-launch-1.0 filesrc location=/path/to/mpeg2/file ! parsebin ! d3d11mpeg2dec ! d3d11videosink
* ```
*
* Since: 1.20
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "gstd3d11mpeg2dec.h"
#include <gst/dxva/gstdxvampeg2decoder.h>
GST_DEBUG_CATEGORY_EXTERN (gst_d3d11_mpeg2_dec_debug);
#define GST_CAT_DEFAULT gst_d3d11_mpeg2_dec_debug
GST_D3D11_DECODER_DEFINE_TYPE_FULL (GstD3D11Mpeg2Dec, gst_d3d11_mpeg2_dec,
GST, D3D11_MPEG2_DEC, GstDxvaMpeg2Decoder);
static void
gst_d3d11_mpeg2_dec_class_init (GstD3D11Mpeg2DecClass * klass, gpointer data)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
GstVideoDecoderClass *decoder_class = GST_VIDEO_DECODER_CLASS (klass);
GstDxvaMpeg2DecoderClass *dxva_class = GST_DXVA_MPEG2_DECODER_CLASS (klass);
GstD3D11DecoderClassData *cdata = (GstD3D11DecoderClassData *) data;
gobject_class->get_property = gst_d3d11_mpeg2_dec_get_property;
element_class->set_context =
GST_DEBUG_FUNCPTR (gst_d3d11_mpeg2_dec_set_context);
parent_class = (GstElementClass *) g_type_class_peek_parent (klass);
gst_d3d11_decoder_class_data_fill_subclass_data (cdata, &klass->class_data);
/**
* GstD3D11Mpeg2Dec:adapter-luid:
*
* DXGI Adapter LUID for this element
*
* Since: 1.20
*/
gst_d3d11_decoder_proxy_class_init (element_class, cdata,
"Seungha Yang <seungha@centricular.com>");
decoder_class->open = GST_DEBUG_FUNCPTR (gst_d3d11_mpeg2_dec_open);
decoder_class->close = GST_DEBUG_FUNCPTR (gst_d3d11_mpeg2_dec_close);
decoder_class->negotiate = GST_DEBUG_FUNCPTR (gst_d3d11_mpeg2_dec_negotiate);
decoder_class->decide_allocation =
GST_DEBUG_FUNCPTR (gst_d3d11_mpeg2_dec_decide_allocation);
decoder_class->sink_query =
GST_DEBUG_FUNCPTR (gst_d3d11_mpeg2_dec_sink_query);
decoder_class->src_query = GST_DEBUG_FUNCPTR (gst_d3d11_mpeg2_dec_src_query);
decoder_class->sink_event =
GST_DEBUG_FUNCPTR (gst_d3d11_mpeg2_dec_sink_event);
dxva_class->configure = GST_DEBUG_FUNCPTR (gst_d3d11_mpeg2_dec_configure);
dxva_class->new_picture = GST_DEBUG_FUNCPTR (gst_d3d11_mpeg2_dec_new_picture);
dxva_class->duplicate_picture =
GST_DEBUG_FUNCPTR (gst_d3d11_mpeg2_dec_duplicate_picture);
dxva_class->get_picture_id =
GST_DEBUG_FUNCPTR (gst_d3d11_mpeg2_dec_get_picture_id);
dxva_class->start_picture =
GST_DEBUG_FUNCPTR (gst_d3d11_mpeg2_dec_start_picture);
dxva_class->end_picture = GST_DEBUG_FUNCPTR (gst_d3d11_mpeg2_dec_end_picture);
dxva_class->output_picture =
GST_DEBUG_FUNCPTR (gst_d3d11_mpeg2_dec_output_picture);
}
static void
gst_d3d11_mpeg2_dec_init (GstD3D11Mpeg2Dec * self)
{
}
static void
gst_d3d11_mpeg2_dec_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstD3D11Mpeg2DecClass *klass = GST_D3D11_MPEG2_DEC_GET_CLASS (object);
GstD3D11DecoderSubClassData *cdata = &klass->class_data;
gst_d3d11_decoder_proxy_get_property (object, prop_id, value, pspec, cdata);
}
static void
gst_d3d11_mpeg2_dec_set_context (GstElement * element, GstContext * context)
{
GstD3D11Mpeg2Dec *self = GST_D3D11_MPEG2_DEC (element);
GstD3D11Mpeg2DecClass *klass = GST_D3D11_MPEG2_DEC_GET_CLASS (self);
GstD3D11DecoderSubClassData *cdata = &klass->class_data;
gst_d3d11_handle_set_context_for_adapter_luid (element,
context, cdata->adapter_luid, &self->device);
GST_ELEMENT_CLASS (parent_class)->set_context (element, context);
}
static gboolean
gst_d3d11_mpeg2_dec_open (GstVideoDecoder * decoder)
{
GstD3D11Mpeg2Dec *self = GST_D3D11_MPEG2_DEC (decoder);
GstD3D11Mpeg2DecClass *klass = GST_D3D11_MPEG2_DEC_GET_CLASS (self);
GstD3D11DecoderSubClassData *cdata = &klass->class_data;
return gst_d3d11_decoder_proxy_open (decoder,
cdata, &self->device, &self->decoder);
}
static gboolean
gst_d3d11_mpeg2_dec_close (GstVideoDecoder * decoder)
{
GstD3D11Mpeg2Dec *self = GST_D3D11_MPEG2_DEC (decoder);
gst_clear_object (&self->decoder);
gst_clear_object (&self->device);
return TRUE;
}
static gboolean
gst_d3d11_mpeg2_dec_negotiate (GstVideoDecoder * decoder)
{
GstD3D11Mpeg2Dec *self = GST_D3D11_MPEG2_DEC (decoder);
if (!gst_d3d11_decoder_negotiate (self->decoder, decoder))
return FALSE;
return GST_VIDEO_DECODER_CLASS (parent_class)->negotiate (decoder);
}
static gboolean
gst_d3d11_mpeg2_dec_decide_allocation (GstVideoDecoder * decoder,
GstQuery * query)
{
GstD3D11Mpeg2Dec *self = GST_D3D11_MPEG2_DEC (decoder);
if (!gst_d3d11_decoder_decide_allocation (self->decoder, decoder, query))
return FALSE;
return GST_VIDEO_DECODER_CLASS (parent_class)->decide_allocation
(decoder, query);
}
static gboolean
gst_d3d11_mpeg2_dec_sink_query (GstVideoDecoder * decoder, GstQuery * query)
{
GstD3D11Mpeg2Dec *self = GST_D3D11_MPEG2_DEC (decoder);
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_CONTEXT:
if (gst_d3d11_handle_context_query (GST_ELEMENT (decoder),
query, self->device)) {
return TRUE;
}
break;
default:
break;
}
return GST_VIDEO_DECODER_CLASS (parent_class)->sink_query (decoder, query);
}
static gboolean
gst_d3d11_mpeg2_dec_src_query (GstVideoDecoder * decoder, GstQuery * query)
{
GstD3D11Mpeg2Dec *self = GST_D3D11_MPEG2_DEC (decoder);
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_CONTEXT:
if (gst_d3d11_handle_context_query (GST_ELEMENT (decoder),
query, self->device)) {
return TRUE;
}
break;
default:
break;
}
return GST_VIDEO_DECODER_CLASS (parent_class)->src_query (decoder, query);
}
static gboolean
gst_d3d11_mpeg2_dec_sink_event (GstVideoDecoder * decoder, GstEvent * event)
{
GstD3D11Mpeg2Dec *self = GST_D3D11_MPEG2_DEC (decoder);
if (self->decoder)
gst_d3d11_decoder_sink_event (self->decoder, event);
return GST_VIDEO_DECODER_CLASS (parent_class)->sink_event (decoder, event);
}
static GstFlowReturn
gst_d3d11_mpeg2_dec_configure (GstDxvaMpeg2Decoder * decoder,
GstVideoCodecState * input_state, const GstVideoInfo * info,
gint crop_x, gint crop_y, gint coded_width, gint coded_height,
gint max_dpb_size)
{
GstD3D11Mpeg2Dec *self = GST_D3D11_MPEG2_DEC (decoder);
return gst_d3d11_decoder_configure (self->decoder, input_state,
info, crop_x, crop_y, coded_width, coded_height, max_dpb_size);
}
static GstFlowReturn
gst_d3d11_mpeg2_dec_new_picture (GstDxvaMpeg2Decoder * decoder,
GstCodecPicture * picture)
{
GstD3D11Mpeg2Dec *self = GST_D3D11_MPEG2_DEC (decoder);
return gst_d3d11_decoder_new_picture (self->decoder,
GST_VIDEO_DECODER (decoder), picture);
}
static GstFlowReturn
gst_d3d11_mpeg2_dec_duplicate_picture (GstDxvaMpeg2Decoder * decoder,
GstCodecPicture * src, GstCodecPicture * dst)
{
GstD3D11Mpeg2Dec *self = GST_D3D11_MPEG2_DEC (decoder);
return gst_d3d11_decoder_duplicate_picture (self->decoder, src, dst);
}
static guint8
gst_d3d11_mpeg2_dec_get_picture_id (GstDxvaMpeg2Decoder * decoder,
GstCodecPicture * picture)
{
GstD3D11Mpeg2Dec *self = GST_D3D11_MPEG2_DEC (decoder);
return gst_d3d11_decoder_get_picture_id (self->decoder, picture);
}
static GstFlowReturn
gst_d3d11_mpeg2_dec_start_picture (GstDxvaMpeg2Decoder * decoder,
GstCodecPicture * picture, guint8 * picture_id)
{
GstD3D11Mpeg2Dec *self = GST_D3D11_MPEG2_DEC (decoder);
return gst_d3d11_decoder_start_picture (self->decoder, picture, picture_id);
}
static GstFlowReturn
gst_d3d11_mpeg2_dec_end_picture (GstDxvaMpeg2Decoder * decoder,
GstCodecPicture * picture, GPtrArray * ref_pics,
const GstDxvaDecodingArgs * args)
{
GstD3D11Mpeg2Dec *self = GST_D3D11_MPEG2_DEC (decoder);
return gst_d3d11_decoder_end_picture (self->decoder, picture, args);
}
static GstFlowReturn
gst_d3d11_mpeg2_dec_output_picture (GstDxvaMpeg2Decoder * decoder,
GstVideoCodecFrame * frame, GstCodecPicture * picture,
GstVideoBufferFlags buffer_flags, gint display_width, gint display_height)
{
GstD3D11Mpeg2Dec *self = GST_D3D11_MPEG2_DEC (decoder);
return gst_d3d11_decoder_output_picture (self->decoder,
GST_VIDEO_DECODER (decoder), frame, picture,
buffer_flags, display_width, display_height);
}
void
gst_d3d11_mpeg2_dec_register (GstPlugin * plugin, GstD3D11Device * device,
guint rank)
{
GType type;
gchar *type_name;
gchar *feature_name;
guint index = 0;
GTypeInfo type_info = {
sizeof (GstD3D11Mpeg2DecClass),
nullptr,
nullptr,
(GClassInitFunc) gst_d3d11_mpeg2_dec_class_init,
nullptr,
nullptr,
sizeof (GstD3D11Mpeg2Dec),
0,
(GInstanceInitFunc) gst_d3d11_mpeg2_dec_init,
};
const GUID *supported_profile = nullptr;
GstCaps *sink_caps = nullptr;
GstCaps *src_caps = nullptr;
if (!gst_d3d11_decoder_get_supported_decoder_profile (device,
GST_DXVA_CODEC_MPEG2, GST_VIDEO_FORMAT_NV12, &supported_profile)) {
GST_INFO_OBJECT (device, "device does not support MPEG-2 video decoding");
return;
}
sink_caps = gst_caps_from_string ("video/mpeg, "
"mpegversion = (int)2, systemstream = (boolean) false, "
"profile = (string) { main, simple }");
src_caps = gst_caps_from_string ("video/x-raw("
GST_CAPS_FEATURE_MEMORY_D3D11_MEMORY "); video/x-raw");
/* NOTE: We are supporting only 4:2:0, main or simple profiles */
gst_caps_set_simple (src_caps, "format", G_TYPE_STRING, "NV12", nullptr);
type_info.class_data =
gst_d3d11_decoder_class_data_new (device, GST_DXVA_CODEC_MPEG2,
sink_caps, src_caps, 1920);
type_name = g_strdup ("GstD3D11Mpeg2Dec");
feature_name = g_strdup ("d3d11mpeg2dec");
while (g_type_from_name (type_name)) {
index++;
g_free (type_name);
g_free (feature_name);
type_name = g_strdup_printf ("GstD3D11Mpeg2Device%dDec", index);
feature_name = g_strdup_printf ("d3d11mpeg2device%ddec", index);
}
type = g_type_register_static (GST_TYPE_DXVA_MPEG2_DECODER,
type_name, &type_info, (GTypeFlags) 0);
/* make lower rank than default device */
if (rank > 0 && index != 0)
rank--;
if (index != 0)
gst_element_type_set_skip_documentation (type);
if (!gst_element_register (plugin, feature_name, rank, type))
GST_WARNING ("Failed to register plugin '%s'", type_name);
g_free (type_name);
g_free (feature_name);
}