gstreamer/subprojects/gst-plugins-bad/sys/d3d11/gstd3d11h264dec.cpp
2022-01-29 04:47:16 +09:00

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, const 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,
const 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 ((GstH264Picture *)
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);
}