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gstreamer/sys/d3d11/gstd3d11h264dec.c
Seungha Yang 7a024a740f codecs: h264decoder: Don't attach extra ref of GstH264Picture to GstVideoCodecFrame 
The lifecycle of GstH264Picture is being managed by our DPB
implementation. If it's still required, subclass can do that
by itself in the new_picture() method.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1449>
2020-07-21 17:18:42 +09:00

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/* GStreamer
* Copyright (C) 2019 Seungha Yang <seungha.yang@navercorp.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.
*
* NOTE: some of implementations are copied/modified from Chromium code
*
* Copyright 2015 The Chromium Authors. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "gstd3d11h264dec.h"
#include "gstd3d11memory.h"
#include "gstd3d11bufferpool.h"
#include <gst/codecs/gsth264decoder.h>
#include <string.h>
/* HACK: to expose dxva data structure on UWP */
#ifdef WINAPI_PARTITION_DESKTOP
#undef WINAPI_PARTITION_DESKTOP
#endif
#define WINAPI_PARTITION_DESKTOP 1
#include <d3d9.h>
#include <dxva.h>
GST_DEBUG_CATEGORY_EXTERN (gst_d3d11_h264_dec_debug);
#define GST_CAT_DEFAULT gst_d3d11_h264_dec_debug
enum
{
PROP_0,
PROP_ADAPTER,
PROP_DEVICE_ID,
PROP_VENDOR_ID,
};
/* copied from d3d11.h since mingw header doesn't define them */
DEFINE_GUID (GST_GUID_D3D11_DECODER_PROFILE_H264_IDCT_FGT, 0x1b81be67, 0xa0c7,
0x11d3, 0xb9, 0x84, 0x00, 0xc0, 0x4f, 0x2e, 0x73, 0xc5);
DEFINE_GUID (GST_GUID_D3D11_DECODER_PROFILE_H264_VLD_NOFGT, 0x1b81be68, 0xa0c7,
0x11d3, 0xb9, 0x84, 0x00, 0xc0, 0x4f, 0x2e, 0x73, 0xc5);
DEFINE_GUID (GST_GUID_D3D11_DECODER_PROFILE_H264_VLD_FGT, 0x1b81be69, 0xa0c7,
0x11d3, 0xb9, 0x84, 0x00, 0xc0, 0x4f, 0x2e, 0x73, 0xc5);
typedef struct _GstD3D11H264Dec
{
GstH264Decoder parent;
GstVideoCodecState *output_state;
GstD3D11Device *device;
guint width, height;
guint coded_width, coded_height;
guint bitdepth;
guint chroma_format_idc;
GstVideoFormat out_format;
/* Array of DXVA_Slice_H264_Short */
GArray *slice_list;
GstD3D11Decoder *d3d11_decoder;
/* Pointing current bitstream buffer */
gboolean bad_aligned_bitstream_buffer;
guint written_buffer_size;
guint remaining_buffer_size;
guint8 *bitstream_buffer_data;
gboolean use_d3d11_output;
DXVA_PicEntry_H264 ref_frame_list[16];
INT field_order_cnt_list[16][2];
USHORT frame_num_list[16];
UINT used_for_reference_flags;
USHORT non_existing_frame_flags;
} GstD3D11H264Dec;
typedef struct _GstD3D11H264DecClass
{
GstH264DecoderClass parent_class;
guint adapter;
guint device_id;
guint vendor_id;
} GstD3D11H264DecClass;
static GstElementClass *parent_class = NULL;
#define GST_D3D11_H264_DEC(object) ((GstD3D11H264Dec *) (object))
#define GST_D3D11_H264_DEC_GET_CLASS(object) \
(G_TYPE_INSTANCE_GET_CLASS ((object),G_TYPE_FROM_INSTANCE (object),GstD3D11H264DecClass))
static void gst_d3d11_h264_dec_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec);
static void gst_d3d11_h264_dec_dispose (GObject * object);
static void gst_d3d11_h264_dec_set_context (GstElement * element,
GstContext * context);
static gboolean gst_d3d11_h264_dec_open (GstVideoDecoder * decoder);
static gboolean gst_d3d11_h264_dec_close (GstVideoDecoder * decoder);
static gboolean gst_d3d11_h264_dec_negotiate (GstVideoDecoder * decoder);
static gboolean gst_d3d11_h264_dec_decide_allocation (GstVideoDecoder *
decoder, GstQuery * query);
static gboolean gst_d3d11_h264_dec_src_query (GstVideoDecoder * decoder,
GstQuery * query);
/* GstH264Decoder */
static gboolean gst_d3d11_h264_dec_new_sequence (GstH264Decoder * decoder,
const GstH264SPS * sps, gint max_dpb_size);
static gboolean gst_d3d11_h264_dec_new_picture (GstH264Decoder * decoder,
GstVideoCodecFrame * frame, GstH264Picture * picture);
static GstFlowReturn gst_d3d11_h264_dec_output_picture (GstH264Decoder *
decoder, GstH264Picture * picture);
static gboolean gst_d3d11_h264_dec_start_picture (GstH264Decoder * decoder,
GstH264Picture * picture, GstH264Slice * slice, GstH264Dpb * dpb);
static gboolean gst_d3d11_h264_dec_decode_slice (GstH264Decoder * decoder,
GstH264Picture * picture, GstH264Slice * slice, GArray * ref_pic_list0,
GArray * ref_pic_list1);
static gboolean gst_d3d11_h264_dec_end_picture (GstH264Decoder * decoder,
GstH264Picture * picture);
static void
gst_d3d11_h264_dec_class_init (GstD3D11H264DecClass * 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);
GstH264DecoderClass *h264decoder_class = GST_H264_DECODER_CLASS (klass);
GstD3D11DecoderClassData *cdata = (GstD3D11DecoderClassData *) data;
gchar *long_name;
gobject_class->get_property = gst_d3d11_h264_dec_get_property;
gobject_class->dispose = gst_d3d11_h264_dec_dispose;
g_object_class_install_property (gobject_class, PROP_ADAPTER,
g_param_spec_uint ("adapter", "Adapter",
"DXGI Adapter index for creating device",
0, G_MAXUINT32, cdata->adapter,
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_DEVICE_ID,
g_param_spec_uint ("device-id", "Device Id",
"DXGI Device ID", 0, G_MAXUINT32, 0,
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_VENDOR_ID,
g_param_spec_uint ("vendor-id", "Vendor Id",
"DXGI Vendor ID", 0, G_MAXUINT32, 0,
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
parent_class = g_type_class_peek_parent (klass);
klass->adapter = cdata->adapter;
klass->device_id = cdata->device_id;
klass->vendor_id = cdata->vendor_id;
element_class->set_context =
GST_DEBUG_FUNCPTR (gst_d3d11_h264_dec_set_context);
long_name = g_strdup_printf ("Direct3D11 H.264 %s Decoder",
cdata->description);
gst_element_class_set_metadata (element_class, long_name,
"Codec/Decoder/Video/Hardware",
"A Direct3D11 based H.264 video decoder",
"Seungha Yang <seungha.yang@navercorp.com>");
g_free (long_name);
gst_element_class_add_pad_template (element_class,
gst_pad_template_new ("sink", GST_PAD_SINK, GST_PAD_ALWAYS,
cdata->sink_caps));
gst_element_class_add_pad_template (element_class,
gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS,
cdata->src_caps));
gst_d3d11_decoder_class_data_free (cdata);
decoder_class->open = GST_DEBUG_FUNCPTR (gst_d3d11_h264_dec_open);
decoder_class->close = GST_DEBUG_FUNCPTR (gst_d3d11_h264_dec_close);
decoder_class->negotiate = GST_DEBUG_FUNCPTR (gst_d3d11_h264_dec_negotiate);
decoder_class->decide_allocation =
GST_DEBUG_FUNCPTR (gst_d3d11_h264_dec_decide_allocation);
decoder_class->src_query = GST_DEBUG_FUNCPTR (gst_d3d11_h264_dec_src_query);
h264decoder_class->new_sequence =
GST_DEBUG_FUNCPTR (gst_d3d11_h264_dec_new_sequence);
h264decoder_class->new_picture =
GST_DEBUG_FUNCPTR (gst_d3d11_h264_dec_new_picture);
h264decoder_class->output_picture =
GST_DEBUG_FUNCPTR (gst_d3d11_h264_dec_output_picture);
h264decoder_class->start_picture =
GST_DEBUG_FUNCPTR (gst_d3d11_h264_dec_start_picture);
h264decoder_class->decode_slice =
GST_DEBUG_FUNCPTR (gst_d3d11_h264_dec_decode_slice);
h264decoder_class->end_picture =
GST_DEBUG_FUNCPTR (gst_d3d11_h264_dec_end_picture);
}
static void
gst_d3d11_h264_dec_init (GstD3D11H264Dec * self)
{
self->slice_list = g_array_new (FALSE, TRUE, sizeof (DXVA_Slice_H264_Short));
}
static void
gst_d3d11_h264_dec_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstD3D11H264DecClass *klass = GST_D3D11_H264_DEC_GET_CLASS (object);
switch (prop_id) {
case PROP_ADAPTER:
g_value_set_uint (value, klass->adapter);
break;
case PROP_DEVICE_ID:
g_value_set_uint (value, klass->device_id);
break;
case PROP_VENDOR_ID:
g_value_set_uint (value, klass->vendor_id);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_d3d11_h264_dec_dispose (GObject * object)
{
GstD3D11H264Dec *self = GST_D3D11_H264_DEC (object);
if (self->slice_list) {
g_array_unref (self->slice_list);
self->slice_list = NULL;
}
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static void
gst_d3d11_h264_dec_set_context (GstElement * element, GstContext * context)
{
GstD3D11H264Dec *self = GST_D3D11_H264_DEC (element);
GstD3D11H264DecClass *klass = GST_D3D11_H264_DEC_GET_CLASS (self);
gst_d3d11_handle_set_context (element, context, klass->adapter,
&self->device);
GST_ELEMENT_CLASS (parent_class)->set_context (element, context);
}
static gboolean
gst_d3d11_h264_dec_open (GstVideoDecoder * decoder)
{
GstD3D11H264Dec *self = GST_D3D11_H264_DEC (decoder);
GstD3D11H264DecClass *klass = GST_D3D11_H264_DEC_GET_CLASS (self);
if (!gst_d3d11_ensure_element_data (GST_ELEMENT_CAST (self), klass->adapter,
&self->device)) {
GST_ERROR_OBJECT (self, "Cannot create d3d11device");
return FALSE;
}
self->d3d11_decoder = gst_d3d11_decoder_new (self->device);
if (!self->d3d11_decoder) {
GST_ERROR_OBJECT (self, "Cannot create d3d11 decoder");
gst_clear_object (&self->device);
return FALSE;
}
return TRUE;
}
static gboolean
gst_d3d11_h264_dec_close (GstVideoDecoder * decoder)
{
GstD3D11H264Dec *self = GST_D3D11_H264_DEC (decoder);
if (self->output_state)
gst_video_codec_state_unref (self->output_state);
self->output_state = NULL;
gst_clear_object (&self->d3d11_decoder);
gst_clear_object (&self->device);
return TRUE;
}
static gboolean
gst_d3d11_h264_dec_negotiate (GstVideoDecoder * decoder)
{
GstD3D11H264Dec *self = GST_D3D11_H264_DEC (decoder);
GstH264Decoder *h264dec = GST_H264_DECODER (decoder);
if (!gst_d3d11_decoder_negotiate (decoder, h264dec->input_state,
self->out_format, self->width, self->height, &self->output_state,
&self->use_d3d11_output))
return FALSE;
return GST_VIDEO_DECODER_CLASS (parent_class)->negotiate (decoder);
}
static gboolean
gst_d3d11_h264_dec_decide_allocation (GstVideoDecoder * decoder,
GstQuery * query)
{
GstD3D11H264Dec *self = GST_D3D11_H264_DEC (decoder);
if (!gst_d3d11_decoder_decide_allocation (decoder, query, self->device,
GST_D3D11_CODEC_H264, self->use_d3d11_output))
return FALSE;
return GST_VIDEO_DECODER_CLASS (parent_class)->decide_allocation
(decoder, query);
}
static gboolean
gst_d3d11_h264_dec_src_query (GstVideoDecoder * decoder, GstQuery * query)
{
GstD3D11H264Dec *self = GST_D3D11_H264_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_h264_dec_new_sequence (GstH264Decoder * decoder,
const GstH264SPS * sps, gint max_dpb_size)
{
GstD3D11H264Dec *self = GST_D3D11_H264_DEC (decoder);
gint crop_width, crop_height;
gboolean modified = FALSE;
static const GUID *supported_profiles[] = {
&GST_GUID_D3D11_DECODER_PROFILE_H264_IDCT_FGT,
&GST_GUID_D3D11_DECODER_PROFILE_H264_VLD_NOFGT,
&GST_GUID_D3D11_DECODER_PROFILE_H264_VLD_FGT
};
GST_LOG_OBJECT (self, "new sequence");
if (sps->frame_cropping_flag) {
crop_width = sps->crop_rect_width;
crop_height = sps->crop_rect_height;
} else {
crop_width = sps->width;
crop_height = sps->height;
}
if (self->width != crop_width || self->height != crop_height ||
self->coded_width != sps->width || self->coded_height != sps->height) {
GST_INFO_OBJECT (self, "resolution changed %dx%d (%dx%d)",
crop_width, crop_height, sps->width, sps->height);
self->width = crop_width;
self->height = crop_height;
self->coded_width = sps->width;
self->coded_height = sps->height;
modified = TRUE;
}
if (self->bitdepth != sps->bit_depth_luma_minus8 + 8) {
GST_INFO_OBJECT (self, "bitdepth changed");
self->bitdepth = sps->bit_depth_luma_minus8 + 8;
modified = TRUE;
}
if (self->chroma_format_idc != sps->chroma_format_idc) {
GST_INFO_OBJECT (self, "chroma format changed");
self->chroma_format_idc = sps->chroma_format_idc;
modified = TRUE;
}
if (modified || !self->d3d11_decoder->opened) {
GstVideoInfo info;
self->out_format = GST_VIDEO_FORMAT_UNKNOWN;
if (self->bitdepth == 8) {
if (self->chroma_format_idc == 1)
self->out_format = GST_VIDEO_FORMAT_NV12;
else {
GST_FIXME_OBJECT (self, "Could not support 8bits non-4:2:0 format");
}
} else if (self->bitdepth == 10) {
if (self->chroma_format_idc == 1)
self->out_format = GST_VIDEO_FORMAT_P010_10LE;
else {
GST_FIXME_OBJECT (self, "Could not support 10bits non-4:2:0 format");
}
}
if (self->out_format == GST_VIDEO_FORMAT_UNKNOWN) {
GST_ERROR_OBJECT (self, "Could not support bitdepth/chroma format");
return FALSE;
}
gst_video_info_set_format (&info,
self->out_format, self->width, self->height);
gst_d3d11_decoder_reset (self->d3d11_decoder);
if (!gst_d3d11_decoder_open (self->d3d11_decoder, GST_D3D11_CODEC_H264,
&info, self->coded_width, self->coded_height,
/* Additional 4 views margin for zero-copy rendering */
max_dpb_size + 4,
supported_profiles, G_N_ELEMENTS (supported_profiles))) {
GST_ERROR_OBJECT (self, "Failed to create decoder");
return FALSE;
}
if (!gst_video_decoder_negotiate (GST_VIDEO_DECODER (self))) {
GST_ERROR_OBJECT (self, "Failed to negotiate with downstream");
return FALSE;
}
}
return TRUE;
}
static gboolean
gst_d3d11_h264_dec_get_bitstream_buffer (GstD3D11H264Dec * self)
{
GST_TRACE_OBJECT (self, "Getting bitstream buffer");
if (!gst_d3d11_decoder_get_decoder_buffer (self->d3d11_decoder,
D3D11_VIDEO_DECODER_BUFFER_BITSTREAM, &self->remaining_buffer_size,
(gpointer *) & self->bitstream_buffer_data)) {
GST_ERROR_OBJECT (self, "Faild to get bitstream buffer");
return FALSE;
}
GST_TRACE_OBJECT (self, "Got bitstream buffer %p with size %d",
self->bitstream_buffer_data, self->remaining_buffer_size);
self->written_buffer_size = 0;
if ((self->remaining_buffer_size & 127) != 0) {
GST_WARNING_OBJECT (self,
"The size of bitstream buffer is not 128 bytes aligned");
self->bad_aligned_bitstream_buffer = TRUE;
} else {
self->bad_aligned_bitstream_buffer = FALSE;
}
return TRUE;
}
static GstD3D11DecoderOutputView *
gst_d3d11_h264_dec_get_output_view_from_picture (GstD3D11H264Dec * self,
GstH264Picture * picture)
{
GstBuffer *view_buffer;
GstD3D11DecoderOutputView *view;
view_buffer = (GstBuffer *) gst_h264_picture_get_user_data (picture);
if (!view_buffer) {
GST_DEBUG_OBJECT (self, "current picture does not have output view buffer");
return NULL;
}
view = gst_d3d11_decoder_get_output_view_from_buffer (self->d3d11_decoder,
view_buffer);
if (!view) {
GST_DEBUG_OBJECT (self, "current picture does not have output view handle");
return NULL;
}
return view;
}
static gboolean
gst_d3d11_h264_dec_start_picture (GstH264Decoder * decoder,
GstH264Picture * picture, GstH264Slice * slice, GstH264Dpb * dpb)
{
GstD3D11H264Dec *self = GST_D3D11_H264_DEC (decoder);
GstD3D11DecoderOutputView *view;
gint i;
GArray *dpb_array;
view = gst_d3d11_h264_dec_get_output_view_from_picture (self, picture);
if (!view) {
GST_ERROR_OBJECT (self, "current picture does not have output view handle");
return FALSE;
}
GST_TRACE_OBJECT (self, "Begin frame");
if (!gst_d3d11_decoder_begin_frame (self->d3d11_decoder, view, 0, NULL)) {
GST_ERROR_OBJECT (self, "Failed to begin frame");
return FALSE;
}
for (i = 0; i < 16; i++) {
self->ref_frame_list[i].bPicEntry = 0xFF;
self->field_order_cnt_list[i][0] = 0;
self->field_order_cnt_list[i][1] = 0;
self->frame_num_list[i] = 0;
}
self->used_for_reference_flags = 0;
self->non_existing_frame_flags = 0;
dpb_array = gst_h264_dpb_get_pictures_all (dpb);
for (i = 0; i < dpb_array->len; i++) {
guint ref = 3;
GstH264Picture *other = g_array_index (dpb_array, GstH264Picture *, i);
GstD3D11DecoderOutputView *other_view;
gint id = 0xff;
if (!other->ref)
continue;
other_view = gst_d3d11_h264_dec_get_output_view_from_picture (self, other);
if (other_view)
id = other_view->view_id;
self->ref_frame_list[i].Index7Bits = id;
self->ref_frame_list[i].AssociatedFlag = other->long_term;
self->field_order_cnt_list[i][0] = other->top_field_order_cnt;
self->field_order_cnt_list[i][1] = other->bottom_field_order_cnt;
self->frame_num_list[i] = self->ref_frame_list[i].AssociatedFlag
? other->long_term_pic_num : other->frame_num;
self->used_for_reference_flags |= ref << (2 * i);
self->non_existing_frame_flags |= (other->nonexisting) << i;
}
g_array_unref (dpb_array);
g_array_set_size (self->slice_list, 0);
return gst_d3d11_h264_dec_get_bitstream_buffer (self);
}
static gboolean
gst_d3d11_h264_dec_new_picture (GstH264Decoder * decoder,
GstVideoCodecFrame * frame, GstH264Picture * picture)
{
GstD3D11H264Dec *self = GST_D3D11_H264_DEC (decoder);
GstBuffer *view_buffer;
GstD3D11Memory *mem;
view_buffer = gst_d3d11_decoder_get_output_view_buffer (self->d3d11_decoder);
if (!view_buffer) {
GST_ERROR_OBJECT (self, "No available output view buffer");
return FALSE;
}
mem = (GstD3D11Memory *) gst_buffer_peek_memory (view_buffer, 0);
GST_LOG_OBJECT (self, "New output view buffer %" GST_PTR_FORMAT " (index %d)",
view_buffer, mem->subresource_index);
gst_h264_picture_set_user_data (picture,
view_buffer, (GDestroyNotify) gst_buffer_unref);
GST_LOG_OBJECT (self, "New h264picture %p", picture);
return TRUE;
}
static GstFlowReturn
gst_d3d11_h264_dec_output_picture (GstH264Decoder * decoder,
GstH264Picture * picture)
{
GstD3D11H264Dec *self = GST_D3D11_H264_DEC (decoder);
GstVideoCodecFrame *frame = NULL;
GstBuffer *output_buffer = NULL;
GstFlowReturn ret;
GstBuffer *view_buffer;
GST_LOG_OBJECT (self,
"Outputting picture %p (poc %d)", picture, picture->pic_order_cnt);
view_buffer = (GstBuffer *) gst_h264_picture_get_user_data (picture);
if (!view_buffer) {
GST_ERROR_OBJECT (self, "Could not get output view");
return GST_FLOW_ERROR;
}
frame = gst_video_decoder_get_frame (GST_VIDEO_DECODER (self),
picture->system_frame_number);
/* if downstream is d3d11 element and forward playback case,
* expose our decoder view without copy. In case of reverse playback, however,
* we cannot do that since baseclass will store the decoded buffer
* up to gop size but our dpb pool cannot be increased */
if (self->use_d3d11_output &&
gst_d3d11_decoder_supports_direct_rendering (self->d3d11_decoder) &&
GST_VIDEO_DECODER (self)->input_segment.rate > 0) {
GstMemory *mem;
output_buffer = gst_buffer_ref (view_buffer);
mem = gst_buffer_peek_memory (output_buffer, 0);
GST_MINI_OBJECT_FLAG_SET (mem, GST_D3D11_MEMORY_TRANSFER_NEED_DOWNLOAD);
} else {
output_buffer =
gst_video_decoder_allocate_output_buffer (GST_VIDEO_DECODER (self));
}
if (!output_buffer) {
GST_ERROR_OBJECT (self, "Couldn't allocate output buffer");
return GST_FLOW_ERROR;
}
if (!frame) {
GST_WARNING_OBJECT (self,
"Failed to find codec frame for picture %p", picture);
GST_BUFFER_PTS (output_buffer) = picture->pts;
GST_BUFFER_DTS (output_buffer) = GST_CLOCK_TIME_NONE;
GST_BUFFER_DURATION (output_buffer) = GST_CLOCK_TIME_NONE;
} else {
frame->output_buffer = output_buffer;
GST_BUFFER_PTS (output_buffer) = GST_BUFFER_PTS (frame->input_buffer);
GST_BUFFER_DTS (output_buffer) = GST_CLOCK_TIME_NONE;
GST_BUFFER_DURATION (output_buffer) =
GST_BUFFER_DURATION (frame->input_buffer);
}
if (!gst_d3d11_decoder_process_output (self->d3d11_decoder,
&self->output_state->info,
GST_VIDEO_INFO_WIDTH (&self->output_state->info),
GST_VIDEO_INFO_HEIGHT (&self->output_state->info),
view_buffer, output_buffer)) {
GST_ERROR_OBJECT (self, "Failed to copy buffer");
if (frame)
gst_video_decoder_drop_frame (GST_VIDEO_DECODER (self), frame);
else
gst_buffer_unref (output_buffer);
return GST_FLOW_ERROR;
}
GST_LOG_OBJECT (self, "Finish frame %" GST_TIME_FORMAT,
GST_TIME_ARGS (GST_BUFFER_PTS (output_buffer)));
if (frame) {
ret = gst_video_decoder_finish_frame (GST_VIDEO_DECODER (self), frame);
} else {
ret = gst_pad_push (GST_VIDEO_DECODER_SRC_PAD (self), output_buffer);
}
return ret;
}
static gboolean
gst_d3d11_h264_dec_submit_slice_data (GstD3D11H264Dec * self)
{
guint buffer_size;
gpointer buffer;
guint8 *data;
gsize offset = 0;
gint i;
D3D11_VIDEO_DECODER_BUFFER_DESC buffer_desc[4] = { 0, };
gboolean ret;
DXVA_Slice_H264_Short *slice_data;
if (self->slice_list->len < 1) {
GST_WARNING_OBJECT (self, "Nothing to submit");
return FALSE;
}
slice_data = &g_array_index (self->slice_list, DXVA_Slice_H264_Short,
self->slice_list->len - 1);
/* DXVA2 spec is saying that written bitstream data must be 128 bytes
* aligned if the bitstream buffer contains end of slice
* (i.e., wBadSliceChopping == 0 or 2) */
if (slice_data->wBadSliceChopping == 0 || slice_data->wBadSliceChopping == 2) {
guint padding =
MIN (GST_ROUND_UP_128 (self->written_buffer_size) -
self->written_buffer_size, self->remaining_buffer_size);
if (padding) {
GST_TRACE_OBJECT (self,
"Written bitstream buffer size %u is not 128 bytes aligned, "
"add padding %u bytes", self->written_buffer_size, padding);
memset (self->bitstream_buffer_data, 0, padding);
self->written_buffer_size += padding;
slice_data->SliceBytesInBuffer += padding;
}
}
GST_TRACE_OBJECT (self, "Getting slice control buffer");
if (!gst_d3d11_decoder_get_decoder_buffer (self->d3d11_decoder,
D3D11_VIDEO_DECODER_BUFFER_SLICE_CONTROL, &buffer_size, &buffer)) {
GST_ERROR_OBJECT (self, "Couldn't get slice control buffer");
return FALSE;
}
data = buffer;
for (i = 0; i < self->slice_list->len; i++) {
DXVA_Slice_H264_Short *slice_data =
&g_array_index (self->slice_list, DXVA_Slice_H264_Short, i);
memcpy (data + offset, slice_data, sizeof (DXVA_Slice_H264_Short));
offset += sizeof (DXVA_Slice_H264_Short);
}
GST_TRACE_OBJECT (self, "Release slice control buffer");
if (!gst_d3d11_decoder_release_decoder_buffer (self->d3d11_decoder,
D3D11_VIDEO_DECODER_BUFFER_SLICE_CONTROL)) {
GST_ERROR_OBJECT (self, "Failed to release slice control buffer");
return FALSE;
}
if (!gst_d3d11_decoder_release_decoder_buffer (self->d3d11_decoder,
D3D11_VIDEO_DECODER_BUFFER_BITSTREAM)) {
GST_ERROR_OBJECT (self, "Failed to release bitstream buffer");
return FALSE;
}
buffer_desc[0].BufferType = D3D11_VIDEO_DECODER_BUFFER_PICTURE_PARAMETERS;
buffer_desc[0].DataOffset = 0;
buffer_desc[0].DataSize = sizeof (DXVA_PicParams_H264);
buffer_desc[1].BufferType =
D3D11_VIDEO_DECODER_BUFFER_INVERSE_QUANTIZATION_MATRIX;
buffer_desc[1].DataOffset = 0;
buffer_desc[1].DataSize = sizeof (DXVA_Qmatrix_H264);
buffer_desc[2].BufferType = D3D11_VIDEO_DECODER_BUFFER_SLICE_CONTROL;
buffer_desc[2].DataOffset = 0;
buffer_desc[2].DataSize =
sizeof (DXVA_Slice_H264_Short) * self->slice_list->len;
if (!self->bad_aligned_bitstream_buffer
&& (self->written_buffer_size & 127) != 0) {
GST_WARNING_OBJECT (self,
"Written bitstream buffer size %u is not 128 bytes aligned",
self->written_buffer_size);
}
buffer_desc[3].BufferType = D3D11_VIDEO_DECODER_BUFFER_BITSTREAM;
buffer_desc[3].DataOffset = 0;
buffer_desc[3].DataSize = self->written_buffer_size;
ret = gst_d3d11_decoder_submit_decoder_buffers (self->d3d11_decoder,
4, buffer_desc);
self->written_buffer_size = 0;
self->bitstream_buffer_data = NULL;
self->remaining_buffer_size = 0;
g_array_set_size (self->slice_list, 0);
return ret;
}
static gboolean
gst_d3d11_h264_dec_end_picture (GstH264Decoder * decoder,
GstH264Picture * picture)
{
GstD3D11H264Dec *self = GST_D3D11_H264_DEC (decoder);
GST_LOG_OBJECT (self, "end picture %p, (poc %d)",
picture, picture->pic_order_cnt);
if (!gst_d3d11_h264_dec_submit_slice_data (self)) {
GST_ERROR_OBJECT (self, "Failed to submit slice data");
return FALSE;
}
if (!gst_d3d11_decoder_end_frame (self->d3d11_decoder)) {
GST_ERROR_OBJECT (self, "Failed to EndFrame");
return FALSE;
}
return TRUE;
}
static void
gst_d3d11_h264_dec_picture_params_from_sps (GstD3D11H264Dec * self,
const GstH264SPS * sps, gboolean field_pic, DXVA_PicParams_H264 * params)
{
#define COPY_FIELD(f) \
(params)->f = (sps)->f
params->wFrameWidthInMbsMinus1 = sps->pic_width_in_mbs_minus1;
params->wFrameHeightInMbsMinus1 = sps->pic_height_in_map_units_minus1;
params->residual_colour_transform_flag = sps->separate_colour_plane_flag;
params->MbaffFrameFlag = sps->mb_adaptive_frame_field_flag && field_pic;
params->field_pic_flag = field_pic;
params->MinLumaBipredSize8x8Flag = sps->level_idc >= 31;
COPY_FIELD (num_ref_frames);
COPY_FIELD (chroma_format_idc);
COPY_FIELD (frame_mbs_only_flag);
COPY_FIELD (bit_depth_luma_minus8);
COPY_FIELD (bit_depth_chroma_minus8);
COPY_FIELD (log2_max_frame_num_minus4);
COPY_FIELD (pic_order_cnt_type);
COPY_FIELD (log2_max_pic_order_cnt_lsb_minus4);
COPY_FIELD (delta_pic_order_always_zero_flag);
COPY_FIELD (direct_8x8_inference_flag);
#undef COPY_FIELD
}
static void
gst_d3d11_h264_dec_picture_params_from_pps (GstD3D11H264Dec * self,
const GstH264PPS * pps, DXVA_PicParams_H264 * params)
{
#define COPY_FIELD(f) \
(params)->f = (pps)->f
COPY_FIELD (constrained_intra_pred_flag);
COPY_FIELD (weighted_pred_flag);
COPY_FIELD (weighted_bipred_idc);
COPY_FIELD (transform_8x8_mode_flag);
COPY_FIELD (pic_init_qs_minus26);
COPY_FIELD (chroma_qp_index_offset);
COPY_FIELD (second_chroma_qp_index_offset);
COPY_FIELD (pic_init_qp_minus26);
COPY_FIELD (num_ref_idx_l0_active_minus1);
COPY_FIELD (num_ref_idx_l1_active_minus1);
COPY_FIELD (entropy_coding_mode_flag);
COPY_FIELD (pic_order_present_flag);
COPY_FIELD (deblocking_filter_control_present_flag);
COPY_FIELD (redundant_pic_cnt_present_flag);
COPY_FIELD (num_slice_groups_minus1);
COPY_FIELD (slice_group_map_type);
#undef COPY_FIELD
}
static void
gst_d3d11_h264_dec_picture_params_from_slice_header (GstD3D11H264Dec *
self, const GstH264SliceHdr * slice_header, DXVA_PicParams_H264 * params)
{
params->sp_for_switch_flag = slice_header->sp_for_switch_flag;
params->field_pic_flag = slice_header->field_pic_flag;
params->CurrPic.AssociatedFlag = slice_header->bottom_field_flag;
params->IntraPicFlag =
GST_H264_IS_I_SLICE (slice_header) || GST_H264_IS_SI_SLICE (slice_header);
}
static gboolean
gst_d3d11_h264_dec_fill_picture_params (GstD3D11H264Dec * self,
const GstH264SliceHdr * slice_header, DXVA_PicParams_H264 * params)
{
const GstH264SPS *sps;
const GstH264PPS *pps;
g_return_val_if_fail (slice_header->pps != NULL, FALSE);
g_return_val_if_fail (slice_header->pps->sequence != NULL, FALSE);
pps = slice_header->pps;
sps = pps->sequence;
memset (params, 0, sizeof (DXVA_PicParams_H264));
params->MbsConsecutiveFlag = 1;
params->Reserved16Bits = 3;
params->ContinuationFlag = 1;
params->Reserved8BitsA = 0;
params->Reserved8BitsB = 0;
params->StatusReportFeedbackNumber = 1;
gst_d3d11_h264_dec_picture_params_from_sps (self,
sps, slice_header->field_pic_flag, params);
gst_d3d11_h264_dec_picture_params_from_pps (self, pps, params);
gst_d3d11_h264_dec_picture_params_from_slice_header (self,
slice_header, params);
return TRUE;
}
static gboolean
gst_d3d11_h264_dec_decode_slice (GstH264Decoder * decoder,
GstH264Picture * picture, GstH264Slice * slice, GArray * ref_pic_list0,
GArray * ref_pic_list1)
{
GstD3D11H264Dec *self = GST_D3D11_H264_DEC (decoder);
GstH264SPS *sps;
GstH264PPS *pps;
DXVA_PicParams_H264 pic_params = { 0, };
DXVA_Qmatrix_H264 iq_matrix = { 0, };
guint d3d11_buffer_size = 0;
gpointer d3d11_buffer = NULL;
gint i, j;
GstD3D11DecoderOutputView *view;
pps = slice->header.pps;
sps = pps->sequence;
view = gst_d3d11_h264_dec_get_output_view_from_picture (self, picture);
if (!view) {
GST_ERROR_OBJECT (self, "current picture does not have output view");
return FALSE;
}
gst_d3d11_h264_dec_fill_picture_params (self, &slice->header, &pic_params);
pic_params.CurrPic.Index7Bits = view->view_id;
pic_params.RefPicFlag = picture->ref;
pic_params.frame_num = picture->frame_num;
if (pic_params.field_pic_flag && pic_params.CurrPic.AssociatedFlag) {
pic_params.CurrFieldOrderCnt[1] = picture->bottom_field_order_cnt;
pic_params.CurrFieldOrderCnt[0] = 0;
} else if (pic_params.field_pic_flag && !pic_params.CurrPic.AssociatedFlag) {
pic_params.CurrFieldOrderCnt[0] = picture->top_field_order_cnt;
pic_params.CurrFieldOrderCnt[1] = 0;
} else {
pic_params.CurrFieldOrderCnt[0] = picture->top_field_order_cnt;
pic_params.CurrFieldOrderCnt[1] = picture->bottom_field_order_cnt;
}
memcpy (pic_params.RefFrameList, self->ref_frame_list,
sizeof (pic_params.RefFrameList));
memcpy (pic_params.FieldOrderCntList, self->field_order_cnt_list,
sizeof (pic_params.FieldOrderCntList));
memcpy (pic_params.FrameNumList, self->frame_num_list,
sizeof (pic_params.FrameNumList));
pic_params.UsedForReferenceFlags = self->used_for_reference_flags;
pic_params.NonExistingFrameFlags = self->non_existing_frame_flags;
GST_TRACE_OBJECT (self, "Getting picture param decoder buffer");
if (!gst_d3d11_decoder_get_decoder_buffer (self->d3d11_decoder,
D3D11_VIDEO_DECODER_BUFFER_PICTURE_PARAMETERS, &d3d11_buffer_size,
&d3d11_buffer)) {
GST_ERROR_OBJECT (self,
"Failed to get decoder buffer for picture parameters");
return FALSE;
}
memcpy (d3d11_buffer, &pic_params, sizeof (DXVA_PicParams_H264));
GST_TRACE_OBJECT (self, "Release picture param decoder buffer");
if (!gst_d3d11_decoder_release_decoder_buffer (self->d3d11_decoder,
D3D11_VIDEO_DECODER_BUFFER_PICTURE_PARAMETERS)) {
GST_ERROR_OBJECT (self, "Failed to release decoder buffer");
return FALSE;
}
if (pps->pic_scaling_matrix_present_flag) {
for (i = 0; i < 6; i++) {
for (j = 0; j < 16; j++) {
iq_matrix.bScalingLists4x4[i][j] = pps->scaling_lists_4x4[i][j];
}
}
for (i = 0; i < 2; i++) {
for (j = 0; j < 64; j++) {
iq_matrix.bScalingLists8x8[i][j] = pps->scaling_lists_8x8[i][j];
}
}
} else {
for (i = 0; i < 6; i++) {
for (j = 0; j < 16; j++) {
iq_matrix.bScalingLists4x4[i][j] = sps->scaling_lists_4x4[i][j];
}
}
for (i = 0; i < 2; i++) {
for (j = 0; j < 64; j++) {
iq_matrix.bScalingLists8x8[i][j] = sps->scaling_lists_8x8[i][j];
}
}
}
GST_TRACE_OBJECT (self, "Getting inverse quantization maxtirx buffer");
if (!gst_d3d11_decoder_get_decoder_buffer (self->d3d11_decoder,
D3D11_VIDEO_DECODER_BUFFER_INVERSE_QUANTIZATION_MATRIX,
&d3d11_buffer_size, &d3d11_buffer)) {
GST_ERROR_OBJECT (self,
"Failed to get decoder buffer for inv. quantization matrix");
return FALSE;
}
memcpy (d3d11_buffer, &iq_matrix, sizeof (DXVA_Qmatrix_H264));
GST_TRACE_OBJECT (self, "Release inverse quantization maxtirx buffer");
if (!gst_d3d11_decoder_release_decoder_buffer (self->d3d11_decoder,
D3D11_VIDEO_DECODER_BUFFER_INVERSE_QUANTIZATION_MATRIX)) {
GST_ERROR_OBJECT (self, "Failed to release decoder buffer");
return FALSE;
}
{
guint to_write = slice->nalu.size + 3;
gboolean is_first = TRUE;
while (to_write > 0) {
guint bytes_to_copy;
gboolean is_last = TRUE;
DXVA_Slice_H264_Short slice_short = { 0, };
if (self->remaining_buffer_size < to_write && self->slice_list->len > 0) {
if (!gst_d3d11_h264_dec_submit_slice_data (self)) {
GST_ERROR_OBJECT (self, "Failed to submit bitstream buffers");
return FALSE;
}
if (!gst_d3d11_h264_dec_get_bitstream_buffer (self)) {
GST_ERROR_OBJECT (self, "Failed to get bitstream buffer");
return FALSE;
}
}
/* remaining_buffer_size: the size of remaining d3d11 decoder
* bitstream memory allowed to write more
* written_buffer_size: the size of written bytes to this d3d11 decoder
* bitstream memory
* bytes_to_copy: the size of which we would write to d3d11 decoder
* bitstream memory in this loop
*/
bytes_to_copy = to_write;
if (bytes_to_copy > self->remaining_buffer_size) {
/* if the size of this slice is larger than the size of remaining d3d11
* decoder bitstream memory, write the data up to the remaining d3d11
* decoder bitstream memory size and the rest would be written to the
* next d3d11 bitstream memory */
bytes_to_copy = self->remaining_buffer_size;
is_last = FALSE;
}
if (bytes_to_copy >= 3 && is_first) {
/* normal case */
self->bitstream_buffer_data[0] = 0;
self->bitstream_buffer_data[1] = 0;
self->bitstream_buffer_data[2] = 1;
memcpy (self->bitstream_buffer_data + 3,
slice->nalu.data + slice->nalu.offset, bytes_to_copy - 3);
} else {
/* when this nal unit date is splitted into two buffer */
memcpy (self->bitstream_buffer_data,
slice->nalu.data + slice->nalu.offset, bytes_to_copy);
}
/* For wBadSliceChopping value 0 or 1, BSNALunitDataLocation means
* the offset of the first start code of this slice in this d3d11
* memory buffer.
* 1) If this is the first slice of picture, it should be zero
* since we write start code at offset 0 (written size before this
* slice also must be zero).
* 2) If this is not the first slice of picture but this is the first
* d3d11 bitstream buffer (meaning that one bitstream buffer contains
* multiple slices), then this is the written size of buffer
* excluding this loop.
* And for wBadSliceChopping value 2 or 3, this should be zero by spec */
if (is_first)
slice_short.BSNALunitDataLocation = self->written_buffer_size;
else
slice_short.BSNALunitDataLocation = 0;
slice_short.SliceBytesInBuffer = bytes_to_copy;
/* wBadSliceChopping: (dxva h264 spec.)
* 0: All bits for the slice are located within the corresponding
* bitstream data buffer
* 1: The bitstream data buffer contains the start of the slice,
* but not the entire slice, because the buffer is full
* 2: The bitstream data buffer contains the end of the slice.
* It does not contain the start of the slice, because the start of
* the slice was located in the previous bitstream data buffer.
* 3: The bitstream data buffer does not contain the start of the slice
* (because the start of the slice was located in the previous
* bitstream data buffer), and it does not contain the end of the slice
* (because the current bitstream data buffer is also full).
*/
if (is_last && is_first) {
slice_short.wBadSliceChopping = 0;
} else if (!is_last && is_first) {
slice_short.wBadSliceChopping = 1;
} else if (is_last && !is_first) {
slice_short.wBadSliceChopping = 2;
} else {
slice_short.wBadSliceChopping = 3;
}
g_array_append_val (self->slice_list, slice_short);
self->remaining_buffer_size -= bytes_to_copy;
self->written_buffer_size += bytes_to_copy;
self->bitstream_buffer_data += bytes_to_copy;
is_first = FALSE;
to_write -= bytes_to_copy;
}
}
return TRUE;
}
typedef struct
{
guint width;
guint height;
} GstD3D11H264DecResolution;
void
gst_d3d11_h264_dec_register (GstPlugin * plugin, GstD3D11Device * device,
GstD3D11Decoder * decoder, guint rank, gboolean legacy)
{
GType type;
gchar *type_name;
gchar *feature_name;
guint index = 0;
guint i;
gboolean ret;
GUID profile;
GTypeInfo type_info = {
sizeof (GstD3D11H264DecClass),
NULL,
NULL,
(GClassInitFunc) gst_d3d11_h264_dec_class_init,
NULL,
NULL,
sizeof (GstD3D11H264Dec),
0,
(GInstanceInitFunc) gst_d3d11_h264_dec_init,
};
static const GUID *supported_profiles[] = {
&GST_GUID_D3D11_DECODER_PROFILE_H264_IDCT_FGT,
&GST_GUID_D3D11_DECODER_PROFILE_H264_VLD_NOFGT,
&GST_GUID_D3D11_DECODER_PROFILE_H264_VLD_FGT
};
/* values were taken from chromium. See supported_profile_helper.cc */
GstD3D11H264DecResolution resolutions_to_check[] = {
{1920, 1088}, {2560, 1440}, {3840, 2160}, {4096, 2160},
{4096, 2304}
};
GstCaps *sink_caps = NULL;
GstCaps *src_caps = NULL;
guint max_width = 0;
guint max_height = 0;
guint resolution;
ret = gst_d3d11_decoder_get_supported_decoder_profile (decoder,
supported_profiles, G_N_ELEMENTS (supported_profiles), &profile);
if (!ret) {
GST_WARNING_OBJECT (device, "decoder profile unavailable");
return;
}
ret = gst_d3d11_decoder_supports_format (decoder, &profile, DXGI_FORMAT_NV12);
if (!ret) {
GST_FIXME_OBJECT (device, "device does not support NV12 format");
return;
}
/* we will not check the maximum resolution for legacy devices.
* it might cause crash */
if (legacy) {
max_width = resolutions_to_check[0].width;
max_height = resolutions_to_check[0].height;
} else {
for (i = 0; i < G_N_ELEMENTS (resolutions_to_check); i++) {
if (gst_d3d11_decoder_supports_resolution (decoder, &profile,
DXGI_FORMAT_NV12, resolutions_to_check[i].width,
resolutions_to_check[i].height)) {
max_width = resolutions_to_check[i].width;
max_height = resolutions_to_check[i].height;
GST_DEBUG_OBJECT (device,
"device support resolution %dx%d", max_width, max_height);
} else {
break;
}
}
}
if (max_width == 0 || max_height == 0) {
GST_WARNING_OBJECT (device, "Couldn't query supported resolution");
return;
}
sink_caps = gst_caps_from_string ("video/x-h264, "
"stream-format= (string) { avc, avc3, byte-stream }, "
"alignment= (string) au, "
"profile = (string) { high, main, constrained-baseline, baseline }, "
"framerate = " GST_VIDEO_FPS_RANGE);
src_caps = gst_caps_from_string ("video/x-raw("
GST_CAPS_FEATURE_MEMORY_D3D11_MEMORY "), format = (string) NV12, "
"framerate = " GST_VIDEO_FPS_RANGE ";"
"video/x-raw, format = (string) NV12, "
"framerate = " GST_VIDEO_FPS_RANGE);
/* To cover both landscape and portrait, select max value */
resolution = MAX (max_width, max_height);
gst_caps_set_simple (sink_caps,
"width", GST_TYPE_INT_RANGE, 64, resolution,
"height", GST_TYPE_INT_RANGE, 64, resolution, NULL);
gst_caps_set_simple (src_caps,
"width", GST_TYPE_INT_RANGE, 64, resolution,
"height", GST_TYPE_INT_RANGE, 64, resolution, NULL);
type_info.class_data =
gst_d3d11_decoder_class_data_new (device, sink_caps, src_caps);
type_name = g_strdup ("GstD3D11H264Dec");
feature_name = g_strdup ("d3d11h264dec");
while (g_type_from_name (type_name)) {
index++;
g_free (type_name);
g_free (feature_name);
type_name = g_strdup_printf ("GstD3D11H264Device%dDec", index);
feature_name = g_strdup_printf ("d3d11h264device%ddec", index);
}
type = g_type_register_static (GST_TYPE_H264_DECODER,
type_name, &type_info, 0);
/* make lower rank than default device */
if (rank > 0 && index != 0)
rank--;
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);
}
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