gstreamer/subprojects/gst-plugins-bad/sys/d3d11/gstd3d11h264dec.cpp
Seungha Yang 6434d69f8c codecs: Stop claiming constness for refcounted object
It's almost pointless and makes little sense as subclass might
want to modify refcount of the object or so. And all subclasses
are already casting them to non-const version as well.
In a general sense, we need to avoid passing refcounted object
with const qualifier.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1238>
2022-02-06 17:17:22 +00:00

1031 lines
34 KiB
C++

/* 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.
*/
/**
* SECTION:element-d3d11h264dec
* @title: d3d11h264dec
*
* A Direct3D11/DXVA based H.264 video decoder
*
* ## Example launch line
* ```
* gst-launch-1.0 filesrc location=/path/to/h264/file ! parsebin ! d3d11h264dec ! d3d11videosink
* ```
*
* Since: 1.18
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "gstd3d11h264dec.h"
#include <gst/codecs/gsth264decoder.h>
#include <string.h>
#include <vector>
/* 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
/* *INDENT-OFF* */
typedef struct _GstD3D11H264DecInner
{
GstD3D11Device *device = nullptr;
GstD3D11Decoder *d3d11_decoder = nullptr;
DXVA_PicParams_H264 pic_params;
DXVA_Qmatrix_H264 iq_matrix;
std::vector<DXVA_Slice_H264_Short> slice_list;
std::vector<guint8> bitstream_buffer;
gint width = 0;
gint height = 0;
gint coded_width = 0;
gint coded_height = 0;
gint bitdepth = 0;
guint8 chroma_format_idc = 0;
GstVideoFormat out_format = GST_VIDEO_FORMAT_UNKNOWN;
gboolean interlaced = FALSE;
gint max_dpb_size = 0;
} GstD3D11H264DecInner;
/* *INDENT-ON* */
typedef struct _GstD3D11H264Dec
{
GstH264Decoder parent;
GstD3D11H264DecInner *inner;
} GstD3D11H264Dec;
typedef struct _GstD3D11H264DecClass
{
GstH264DecoderClass parent_class;
GstD3D11DecoderSubClassData class_data;
} 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_finalize (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);
static gboolean gst_d3d11_h264_dec_sink_event (GstVideoDecoder * decoder,
GstEvent * event);
/* GstH264Decoder */
static GstFlowReturn gst_d3d11_h264_dec_new_sequence (GstH264Decoder * decoder,
const GstH264SPS * sps, gint max_dpb_size);
static GstFlowReturn gst_d3d11_h264_dec_new_picture (GstH264Decoder * decoder,
GstVideoCodecFrame * frame, GstH264Picture * picture);
static GstFlowReturn
gst_d3d11_h264_dec_new_field_picture (GstH264Decoder * decoder,
GstH264Picture * first_field, GstH264Picture * second_field);
static GstFlowReturn gst_d3d11_h264_dec_start_picture (GstH264Decoder * decoder,
GstH264Picture * picture, GstH264Slice * slice, GstH264Dpb * dpb);
static GstFlowReturn gst_d3d11_h264_dec_decode_slice (GstH264Decoder * decoder,
GstH264Picture * picture, GstH264Slice * slice, GArray * ref_pic_list0,
GArray * ref_pic_list1);
static GstFlowReturn gst_d3d11_h264_dec_end_picture (GstH264Decoder * decoder,
GstH264Picture * picture);
static GstFlowReturn gst_d3d11_h264_dec_output_picture (GstH264Decoder *
decoder, GstVideoCodecFrame * frame, 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;
gobject_class->get_property = gst_d3d11_h264_dec_get_property;
gobject_class->finalize = gst_d3d11_h264_dec_finalize;
element_class->set_context =
GST_DEBUG_FUNCPTR (gst_d3d11_h264_dec_set_context);
parent_class = (GstElementClass *) g_type_class_peek_parent (klass);
gst_d3d11_decoder_class_data_fill_subclass_data (cdata, &klass->class_data);
/**
* GstD3D11H264Dec:adapter-luid:
*
* DXGI Adapter LUID for this element
*
* Since: 1.20
*/
gst_d3d11_decoder_proxy_class_init (element_class, cdata,
"Seungha Yang <seungha.yang@navercorp.com>");
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);
decoder_class->sink_event = GST_DEBUG_FUNCPTR (gst_d3d11_h264_dec_sink_event);
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->new_field_picture =
GST_DEBUG_FUNCPTR (gst_d3d11_h264_dec_new_field_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);
h264decoder_class->output_picture =
GST_DEBUG_FUNCPTR (gst_d3d11_h264_dec_output_picture);
}
static void
gst_d3d11_h264_dec_init (GstD3D11H264Dec * self)
{
self->inner = new GstD3D11H264DecInner ();
}
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);
GstD3D11DecoderSubClassData *cdata = &klass->class_data;
gst_d3d11_decoder_proxy_get_property (object, prop_id, value, pspec, cdata);
}
static void
gst_d3d11_h264_dec_finalize (GObject * object)
{
GstD3D11H264Dec *self = GST_D3D11_H264_DEC (object);
delete self->inner;
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gst_d3d11_h264_dec_set_context (GstElement * element, GstContext * context)
{
GstD3D11H264Dec *self = GST_D3D11_H264_DEC (element);
GstD3D11H264DecInner *inner = self->inner;
GstD3D11H264DecClass *klass = GST_D3D11_H264_DEC_GET_CLASS (self);
GstD3D11DecoderSubClassData *cdata = &klass->class_data;
gst_d3d11_handle_set_context_for_adapter_luid (element,
context, cdata->adapter_luid, &inner->device);
GST_ELEMENT_CLASS (parent_class)->set_context (element, context);
}
/* Clear all codec specific (e.g., SPS) data */
static void
gst_d3d11_h264_dec_reset (GstD3D11H264Dec * self)
{
GstD3D11H264DecInner *inner = self->inner;
inner->width = 0;
inner->height = 0;
inner->coded_width = 0;
inner->coded_height = 0;
inner->bitdepth = 0;
inner->chroma_format_idc = 0;
inner->out_format = GST_VIDEO_FORMAT_UNKNOWN;
inner->interlaced = FALSE;
inner->max_dpb_size = 0;
}
static gboolean
gst_d3d11_h264_dec_open (GstVideoDecoder * decoder)
{
GstD3D11H264Dec *self = GST_D3D11_H264_DEC (decoder);
GstD3D11H264DecInner *inner = self->inner;
GstD3D11H264DecClass *klass = GST_D3D11_H264_DEC_GET_CLASS (self);
GstD3D11DecoderSubClassData *cdata = &klass->class_data;
if (!gst_d3d11_decoder_proxy_open (decoder,
cdata, &inner->device, &inner->d3d11_decoder)) {
GST_ERROR_OBJECT (self, "Failed to open decoder");
return FALSE;
}
gst_d3d11_h264_dec_reset (self);
return TRUE;
}
static gboolean
gst_d3d11_h264_dec_close (GstVideoDecoder * decoder)
{
GstD3D11H264Dec *self = GST_D3D11_H264_DEC (decoder);
GstD3D11H264DecInner *inner = self->inner;
gst_clear_object (&inner->d3d11_decoder);
gst_clear_object (&inner->device);
return TRUE;
}
static gboolean
gst_d3d11_h264_dec_negotiate (GstVideoDecoder * decoder)
{
GstD3D11H264Dec *self = GST_D3D11_H264_DEC (decoder);
GstD3D11H264DecInner *inner = self->inner;
if (!gst_d3d11_decoder_negotiate (inner->d3d11_decoder, decoder))
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);
GstD3D11H264DecInner *inner = self->inner;
if (!gst_d3d11_decoder_decide_allocation (inner->d3d11_decoder,
decoder, query)) {
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);
GstD3D11H264DecInner *inner = self->inner;
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_CONTEXT:
if (gst_d3d11_handle_context_query (GST_ELEMENT (decoder),
query, inner->device)) {
return TRUE;
}
break;
default:
break;
}
return GST_VIDEO_DECODER_CLASS (parent_class)->src_query (decoder, query);
}
static gboolean
gst_d3d11_h264_dec_sink_event (GstVideoDecoder * decoder, GstEvent * event)
{
GstD3D11H264Dec *self = GST_D3D11_H264_DEC (decoder);
GstD3D11H264DecInner *inner = self->inner;
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_FLUSH_START:
if (inner->d3d11_decoder)
gst_d3d11_decoder_set_flushing (inner->d3d11_decoder, decoder, TRUE);
break;
case GST_EVENT_FLUSH_STOP:
if (inner->d3d11_decoder)
gst_d3d11_decoder_set_flushing (inner->d3d11_decoder, decoder, FALSE);
default:
break;
}
return GST_VIDEO_DECODER_CLASS (parent_class)->sink_event (decoder, event);
}
static GstFlowReturn
gst_d3d11_h264_dec_new_sequence (GstH264Decoder * decoder,
const GstH264SPS * sps, gint max_dpb_size)
{
GstD3D11H264Dec *self = GST_D3D11_H264_DEC (decoder);
GstD3D11H264DecInner *inner = self->inner;
gint crop_width, crop_height;
gboolean interlaced;
gboolean modified = FALSE;
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 (inner->width != crop_width || inner->height != crop_height ||
inner->coded_width != sps->width || inner->coded_height != sps->height) {
GST_INFO_OBJECT (self, "resolution changed %dx%d (%dx%d)",
crop_width, crop_height, sps->width, sps->height);
inner->width = crop_width;
inner->height = crop_height;
inner->coded_width = sps->width;
inner->coded_height = sps->height;
modified = TRUE;
}
if (inner->bitdepth != sps->bit_depth_luma_minus8 + 8) {
GST_INFO_OBJECT (self, "bitdepth changed");
inner->bitdepth = (guint) sps->bit_depth_luma_minus8 + 8;
modified = TRUE;
}
if (inner->chroma_format_idc != sps->chroma_format_idc) {
GST_INFO_OBJECT (self, "chroma format changed");
inner->chroma_format_idc = sps->chroma_format_idc;
modified = TRUE;
}
interlaced = !sps->frame_mbs_only_flag;
if (inner->interlaced != interlaced) {
GST_INFO_OBJECT (self, "interlaced sequence changed");
inner->interlaced = interlaced;
modified = TRUE;
}
if (inner->max_dpb_size < max_dpb_size) {
GST_INFO_OBJECT (self, "Requires larger DPB size (%d -> %d)",
inner->max_dpb_size, max_dpb_size);
modified = TRUE;
}
if (modified || !gst_d3d11_decoder_is_configured (inner->d3d11_decoder)) {
GstVideoInfo info;
inner->out_format = GST_VIDEO_FORMAT_UNKNOWN;
if (inner->bitdepth == 8) {
if (inner->chroma_format_idc == 1)
inner->out_format = GST_VIDEO_FORMAT_NV12;
else {
GST_FIXME_OBJECT (self, "Could not support 8bits non-4:2:0 format");
}
}
if (inner->out_format == GST_VIDEO_FORMAT_UNKNOWN) {
GST_ERROR_OBJECT (self, "Could not support bitdepth/chroma format");
return GST_FLOW_NOT_NEGOTIATED;
}
gst_video_info_set_format (&info,
inner->out_format, inner->width, inner->height);
if (inner->interlaced)
GST_VIDEO_INFO_INTERLACE_MODE (&info) = GST_VIDEO_INTERLACE_MODE_MIXED;
/* Store configured DPB size here. Then, it will be referenced later
* to decide whether we need to re-open decoder object or not.
* For instance, if every configuration is same apart from DPB size and
* new DPB size is decreased, we can reuse existing decoder object.
*/
inner->max_dpb_size = max_dpb_size;
if (!gst_d3d11_decoder_configure (inner->d3d11_decoder,
decoder->input_state, &info,
inner->coded_width, inner->coded_height,
/* Additional 4 views margin for zero-copy rendering */
max_dpb_size + 4)) {
GST_ERROR_OBJECT (self, "Failed to create decoder");
return GST_FLOW_NOT_NEGOTIATED;
}
if (!gst_video_decoder_negotiate (GST_VIDEO_DECODER (self))) {
GST_ERROR_OBJECT (self, "Failed to negotiate with downstream");
return GST_FLOW_NOT_NEGOTIATED;
}
}
return GST_FLOW_OK;
}
static GstFlowReturn
gst_d3d11_h264_dec_new_picture (GstH264Decoder * decoder,
GstVideoCodecFrame * frame, GstH264Picture * picture)
{
GstD3D11H264Dec *self = GST_D3D11_H264_DEC (decoder);
GstD3D11H264DecInner *inner = self->inner;
GstBuffer *view_buffer;
view_buffer = gst_d3d11_decoder_get_output_view_buffer (inner->d3d11_decoder,
GST_VIDEO_DECODER (decoder));
if (!view_buffer) {
GST_DEBUG_OBJECT (self, "No available output view buffer");
return GST_FLOW_FLUSHING;
}
GST_LOG_OBJECT (self, "New output view buffer %" GST_PTR_FORMAT, view_buffer);
gst_h264_picture_set_user_data (picture,
view_buffer, (GDestroyNotify) gst_buffer_unref);
GST_LOG_OBJECT (self, "New h264picture %p", picture);
return GST_FLOW_OK;
}
static GstFlowReturn
gst_d3d11_h264_dec_new_field_picture (GstH264Decoder * decoder,
GstH264Picture * first_field, GstH264Picture * second_field)
{
GstD3D11H264Dec *self = GST_D3D11_H264_DEC (decoder);
GstBuffer *view_buffer;
view_buffer = (GstBuffer *) gst_h264_picture_get_user_data (first_field);
if (!view_buffer) {
GST_WARNING_OBJECT (self, "First picture does not have output view buffer");
return GST_FLOW_OK;
}
GST_LOG_OBJECT (self, "New field picture with buffer %" GST_PTR_FORMAT,
view_buffer);
gst_h264_picture_set_user_data (second_field,
gst_buffer_ref (view_buffer), (GDestroyNotify) gst_buffer_unref);
return GST_FLOW_OK;
}
static ID3D11VideoDecoderOutputView *
gst_d3d11_h264_dec_get_output_view_from_picture (GstD3D11H264Dec * self,
GstH264Picture * picture, guint8 * view_id)
{
GstD3D11H264DecInner *inner = self->inner;
GstBuffer *view_buffer;
ID3D11VideoDecoderOutputView *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 (inner->d3d11_decoder,
view_buffer, view_id);
if (!view) {
GST_DEBUG_OBJECT (self, "current picture does not have output view handle");
return NULL;
}
return view;
}
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;
if (!sps->frame_mbs_only_flag) {
params->wFrameHeightInMbsMinus1 =
((sps->pic_height_in_map_units_minus1 + 1) << 1) - 1;
} else {
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;
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 inline void
init_pic_params (DXVA_PicParams_H264 * params)
{
memset (params, 0, sizeof (DXVA_PicParams_H264));
for (guint i = 0; i < G_N_ELEMENTS (params->RefFrameList); i++)
params->RefFrameList[i].bPicEntry = 0xff;
}
static GstFlowReturn
gst_d3d11_h264_dec_start_picture (GstH264Decoder * decoder,
GstH264Picture * picture, GstH264Slice * slice, GstH264Dpb * dpb)
{
GstD3D11H264Dec *self = GST_D3D11_H264_DEC (decoder);
GstD3D11H264DecInner *inner = self->inner;
DXVA_PicParams_H264 *pic_params = &inner->pic_params;
DXVA_Qmatrix_H264 *iq_matrix = &inner->iq_matrix;
ID3D11VideoDecoderOutputView *view;
guint8 view_id = 0xff;
GArray *dpb_array;
GstH264PPS *pps;
guint i, j;
pps = slice->header.pps;
view = gst_d3d11_h264_dec_get_output_view_from_picture (self, picture,
&view_id);
if (!view) {
GST_ERROR_OBJECT (self, "current picture does not have output view handle");
return GST_FLOW_ERROR;
}
init_pic_params (pic_params);
gst_d3d11_h264_dec_fill_picture_params (self, &slice->header, pic_params);
pic_params->CurrPic.Index7Bits = view_id;
pic_params->RefPicFlag = GST_H264_PICTURE_IS_REF (picture);
pic_params->frame_num = picture->frame_num;
if (picture->field == GST_H264_PICTURE_FIELD_TOP_FIELD) {
pic_params->CurrFieldOrderCnt[0] = picture->top_field_order_cnt;
pic_params->CurrFieldOrderCnt[1] = 0;
} else if (picture->field == GST_H264_PICTURE_FIELD_BOTTOM_FIELD) {
pic_params->CurrFieldOrderCnt[0] = 0;
pic_params->CurrFieldOrderCnt[1] = picture->bottom_field_order_cnt;
} else {
pic_params->CurrFieldOrderCnt[0] = picture->top_field_order_cnt;
pic_params->CurrFieldOrderCnt[1] = picture->bottom_field_order_cnt;
}
dpb_array = gst_h264_dpb_get_pictures_all (dpb);
for (i = 0, j = 0; i < dpb_array->len && j < 16; i++) {
GstH264Picture *other = g_array_index (dpb_array, GstH264Picture *, i);
guint8 id = 0xff;
if (!GST_H264_PICTURE_IS_REF (other))
continue;
/* The second field picture will be handled differently */
if (other->second_field)
continue;
gst_d3d11_h264_dec_get_output_view_from_picture (self, other, &id);
pic_params->RefFrameList[j].Index7Bits = id;
if (GST_H264_PICTURE_IS_LONG_TERM_REF (other)) {
pic_params->RefFrameList[j].AssociatedFlag = 1;
pic_params->FrameNumList[j] = other->long_term_frame_idx;
} else {
pic_params->RefFrameList[j].AssociatedFlag = 0;
pic_params->FrameNumList[j] = other->frame_num;
}
switch (other->field) {
case GST_H264_PICTURE_FIELD_TOP_FIELD:
pic_params->FieldOrderCntList[j][0] = other->top_field_order_cnt;
pic_params->UsedForReferenceFlags |= 0x1 << (2 * j);
break;
case GST_H264_PICTURE_FIELD_BOTTOM_FIELD:
pic_params->FieldOrderCntList[j][1] = other->bottom_field_order_cnt;
pic_params->UsedForReferenceFlags |= 0x1 << (2 * j + 1);
break;
default:
pic_params->FieldOrderCntList[j][0] = other->top_field_order_cnt;
pic_params->FieldOrderCntList[j][1] = other->bottom_field_order_cnt;
pic_params->UsedForReferenceFlags |= 0x3 << (2 * j);
break;
}
if (other->other_field) {
GstH264Picture *other_field = other->other_field;
switch (other_field->field) {
case GST_H264_PICTURE_FIELD_TOP_FIELD:
pic_params->FieldOrderCntList[j][0] =
other_field->top_field_order_cnt;
pic_params->UsedForReferenceFlags |= 0x1 << (2 * j);
break;
case GST_H264_PICTURE_FIELD_BOTTOM_FIELD:
pic_params->FieldOrderCntList[j][1] =
other_field->bottom_field_order_cnt;
pic_params->UsedForReferenceFlags |= 0x1 << (2 * j + 1);
break;
default:
break;
}
}
pic_params->NonExistingFrameFlags |= (other->nonexisting) << j;
j++;
}
g_array_unref (dpb_array);
G_STATIC_ASSERT (sizeof (iq_matrix->bScalingLists4x4) ==
sizeof (pps->scaling_lists_4x4));
memcpy (iq_matrix->bScalingLists4x4, pps->scaling_lists_4x4,
sizeof (pps->scaling_lists_4x4));
G_STATIC_ASSERT (sizeof (iq_matrix->bScalingLists8x8[0]) ==
sizeof (pps->scaling_lists_8x8[0]));
memcpy (iq_matrix->bScalingLists8x8[0], pps->scaling_lists_8x8[0],
sizeof (pps->scaling_lists_8x8[0]));
memcpy (iq_matrix->bScalingLists8x8[1], pps->scaling_lists_8x8[1],
sizeof (pps->scaling_lists_8x8[1]));
inner->slice_list.resize (0);
inner->bitstream_buffer.resize (0);
return GST_FLOW_OK;
}
static GstFlowReturn
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);
GstD3D11H264DecInner *inner = self->inner;
DXVA_Slice_H264_Short dxva_slice;
static const guint8 start_code[] = { 0, 0, 1 };
const size_t start_code_size = sizeof (start_code);
dxva_slice.BSNALunitDataLocation = inner->bitstream_buffer.size ();
/* Includes 3 bytes start code prefix */
dxva_slice.SliceBytesInBuffer = slice->nalu.size + start_code_size;
dxva_slice.wBadSliceChopping = 0;
inner->slice_list.push_back (dxva_slice);
size_t pos = inner->bitstream_buffer.size ();
inner->bitstream_buffer.resize (pos + start_code_size + slice->nalu.size);
/* Fill start code prefix */
memcpy (&inner->bitstream_buffer[0] + pos, start_code, start_code_size);
/* Copy bitstream */
memcpy (&inner->bitstream_buffer[0] + pos + start_code_size,
slice->nalu.data + slice->nalu.offset, slice->nalu.size);
return GST_FLOW_OK;
}
static GstFlowReturn
gst_d3d11_h264_dec_end_picture (GstH264Decoder * decoder,
GstH264Picture * picture)
{
GstD3D11H264Dec *self = GST_D3D11_H264_DEC (decoder);
GstD3D11H264DecInner *inner = self->inner;
ID3D11VideoDecoderOutputView *view;
guint8 view_id = 0xff;
size_t bitstream_buffer_size;
size_t bitstream_pos;
GstD3D11DecodeInputStreamArgs input_args;
GST_LOG_OBJECT (self, "end picture %p, (poc %d)",
picture, picture->pic_order_cnt);
if (inner->bitstream_buffer.empty () || inner->slice_list.empty ()) {
GST_ERROR_OBJECT (self, "No bitstream buffer to submit");
return GST_FLOW_ERROR;
}
view = gst_d3d11_h264_dec_get_output_view_from_picture (self, picture,
&view_id);
if (!view) {
GST_ERROR_OBJECT (self, "current picture does not have output view handle");
return GST_FLOW_ERROR;
}
memset (&input_args, 0, sizeof (GstD3D11DecodeInputStreamArgs));
bitstream_pos = inner->bitstream_buffer.size ();
bitstream_buffer_size = GST_ROUND_UP_128 (bitstream_pos);
if (bitstream_buffer_size > bitstream_pos) {
size_t padding = bitstream_buffer_size - bitstream_pos;
/* As per DXVA spec, total amount of bitstream buffer size should be
* 128 bytes aligned. If actual data is not multiple of 128 bytes,
* the last slice data needs to be zero-padded */
inner->bitstream_buffer.resize (bitstream_buffer_size, 0);
DXVA_Slice_H264_Short & slice = inner->slice_list.back ();
slice.SliceBytesInBuffer += padding;
}
input_args.picture_params = &inner->pic_params;
input_args.picture_params_size = sizeof (DXVA_PicParams_H264);
input_args.slice_control = &inner->slice_list[0];
input_args.slice_control_size =
sizeof (DXVA_Slice_H264_Short) * inner->slice_list.size ();
input_args.bitstream = &inner->bitstream_buffer[0];
input_args.bitstream_size = inner->bitstream_buffer.size ();
input_args.inverse_quantization_matrix = &inner->iq_matrix;
input_args.inverse_quantization_matrix_size = sizeof (DXVA_Qmatrix_H264);
if (!gst_d3d11_decoder_decode_frame (inner->d3d11_decoder, view, &input_args))
return GST_FLOW_ERROR;
return GST_FLOW_OK;
}
static GstFlowReturn
gst_d3d11_h264_dec_output_picture (GstH264Decoder * decoder,
GstVideoCodecFrame * frame, GstH264Picture * picture)
{
GstD3D11H264Dec *self = GST_D3D11_H264_DEC (decoder);
GstD3D11H264DecInner *inner = self->inner;
GstVideoDecoder *vdec = GST_VIDEO_DECODER (decoder);
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");
goto error;
}
if (!gst_d3d11_decoder_process_output (inner->d3d11_decoder, vdec,
inner->width, inner->height, view_buffer, &frame->output_buffer)) {
GST_ERROR_OBJECT (self, "Failed to copy buffer");
goto error;
}
if (picture->buffer_flags != 0) {
gboolean interlaced =
(picture->buffer_flags & GST_VIDEO_BUFFER_FLAG_INTERLACED) != 0;
gboolean tff = (picture->buffer_flags & GST_VIDEO_BUFFER_FLAG_TFF) != 0;
GST_TRACE_OBJECT (self,
"apply buffer flags 0x%x (interlaced %d, top-field-first %d)",
picture->buffer_flags, interlaced, tff);
GST_BUFFER_FLAG_SET (frame->output_buffer, picture->buffer_flags);
}
gst_h264_picture_unref (picture);
return gst_video_decoder_finish_frame (vdec, frame);
error:
gst_h264_picture_unref (picture);
gst_video_decoder_release_frame (vdec, frame);
return GST_FLOW_ERROR;
}
void
gst_d3d11_h264_dec_register (GstPlugin * plugin, GstD3D11Device * device,
guint rank, gboolean legacy)
{
GType type;
gchar *type_name;
gchar *feature_name;
guint index = 0;
guint i;
gboolean ret;
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,
};
const GUID *supported_profile = NULL;
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 (device,
GST_DXVA_CODEC_H264, GST_VIDEO_FORMAT_NV12, &supported_profile);
if (!ret) {
GST_WARNING_OBJECT (device, "decoder profile unavailable");
return;
}
ret =
gst_d3d11_decoder_supports_format (device, supported_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 = gst_dxva_resolutions[0].width;
max_height = gst_dxva_resolutions[0].height;
} else {
for (i = 0; i < G_N_ELEMENTS (gst_dxva_resolutions); i++) {
if (gst_d3d11_decoder_supports_resolution (device, supported_profile,
DXGI_FORMAT_NV12, gst_dxva_resolutions[i].width,
gst_dxva_resolutions[i].height)) {
max_width = gst_dxva_resolutions[i].width;
max_height = gst_dxva_resolutions[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, progressive-high, constrained-high, main, constrained-baseline, baseline }");
src_caps = gst_caps_from_string ("video/x-raw("
GST_CAPS_FEATURE_MEMORY_D3D11_MEMORY "), format = (string) NV12; "
"video/x-raw, format = (string) NV12");
/* 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, 1, resolution,
"height", GST_TYPE_INT_RANGE, 1, resolution, NULL);
gst_caps_set_simple (src_caps,
"width", GST_TYPE_INT_RANGE, 1, resolution,
"height", GST_TYPE_INT_RANGE, 1, resolution, NULL);
type_info.class_data =
gst_d3d11_decoder_class_data_new (device, GST_DXVA_CODEC_H264,
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, (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);
}