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

856 lines
28 KiB
C++

/* GStreamer
* Copyright (C) 2021 Seungha Yang <seungha@centricular.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/**
* SECTION:element-d3d11mpeg2dec
* @title: d3d11mpeg2dec
*
* A Direct3D11/DXVA based MPEG-2 video decoder
*
* ## Example launch line
* ```
* gst-launch-1.0 filesrc location=/path/to/mpeg2/file ! parsebin ! d3d11mpeg2dec ! d3d11videosink
* ```
*
* Since: 1.20
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "gstd3d11mpeg2dec.h"
#include <gst/codecs/gstmpeg2decoder.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_mpeg2_dec_debug);
#define GST_CAT_DEFAULT gst_d3d11_mpeg2_dec_debug
/* reference list 2 + 4 margin */
#define NUM_OUTPUT_VIEW 6
/* *INDENT-OFF* */
typedef struct _GstD3D11Mpeg2DecInner
{
GstD3D11Device *device = nullptr;
GstD3D11Decoder *d3d11_decoder = nullptr;
DXVA_PictureParameters pic_params;
DXVA_QmatrixData iq_matrix;
std::vector<DXVA_SliceInfo> slice_list;
std::vector<guint8> bitstream_buffer;
gboolean submit_iq_data;
gint width = 0;
gint height = 0;
guint width_in_mb = 0;
guint height_in_mb = 0;
GstVideoFormat out_format = GST_VIDEO_FORMAT_UNKNOWN;
GstMpegVideoSequenceHdr seq;
GstMpegVideoProfile profile = GST_MPEG_VIDEO_PROFILE_MAIN;
gboolean interlaced = FALSE;
} GstD3D11Mpeg2DecInner;
/* *INDENT-ON* */
typedef struct _GstD3D11Mpeg2Dec
{
GstMpeg2Decoder parent;
GstD3D11Mpeg2DecInner *inner;
} GstD3D11Mpeg2Dec;
typedef struct _GstD3D11Mpeg2DecClass
{
GstMpeg2DecoderClass parent_class;
GstD3D11DecoderSubClassData class_data;
} GstD3D11Mpeg2DecClass;
static GstElementClass *parent_class = NULL;
#define GST_D3D11_MPEG2_DEC(object) ((GstD3D11Mpeg2Dec *) (object))
#define GST_D3D11_MPEG2_DEC_GET_CLASS(object) \
(G_TYPE_INSTANCE_GET_CLASS ((object),G_TYPE_FROM_INSTANCE (object),GstD3D11Mpeg2DecClass))
static void gst_d3d11_mpeg2_dec_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec);
static void gst_d3d11_mpeg2_dec_finalize (GObject * object);
static void gst_d3d11_mpeg2_dec_set_context (GstElement * element,
GstContext * context);
static gboolean gst_d3d11_mpeg2_dec_open (GstVideoDecoder * decoder);
static gboolean gst_d3d11_mpeg2_dec_close (GstVideoDecoder * decoder);
static gboolean gst_d3d11_mpeg2_dec_negotiate (GstVideoDecoder * decoder);
static gboolean gst_d3d11_mpeg2_dec_decide_allocation (GstVideoDecoder *
decoder, GstQuery * query);
static gboolean gst_d3d11_mpeg2_dec_src_query (GstVideoDecoder * decoder,
GstQuery * query);
static gboolean gst_d3d11_mpeg2_dec_sink_event (GstVideoDecoder * decoder,
GstEvent * event);
/* GstMpeg2Decoder */
static GstFlowReturn gst_d3d11_mpeg2_dec_new_sequence (GstMpeg2Decoder *
decoder, const GstMpegVideoSequenceHdr * seq,
const GstMpegVideoSequenceExt * seq_ext,
const GstMpegVideoSequenceDisplayExt * seq_display_ext,
const GstMpegVideoSequenceScalableExt * seq_scalable_ext);
static GstFlowReturn gst_d3d11_mpeg2_dec_new_picture (GstMpeg2Decoder * decoder,
GstVideoCodecFrame * frame, GstMpeg2Picture * picture);
static GstFlowReturn
gst_d3d11_mpeg2_dec_new_field_picture (GstMpeg2Decoder * decoder,
GstMpeg2Picture * first_field, GstMpeg2Picture * second_field);
static GstFlowReturn gst_d3d11_mpeg2_dec_start_picture (GstMpeg2Decoder *
decoder, GstMpeg2Picture * picture, GstMpeg2Slice * slice,
GstMpeg2Picture * prev_picture, GstMpeg2Picture * next_picture);
static GstFlowReturn gst_d3d11_mpeg2_dec_decode_slice (GstMpeg2Decoder *
decoder, GstMpeg2Picture * picture, GstMpeg2Slice * slice);
static GstFlowReturn gst_d3d11_mpeg2_dec_end_picture (GstMpeg2Decoder * decoder,
GstMpeg2Picture * picture);
static GstFlowReturn gst_d3d11_mpeg2_dec_output_picture (GstMpeg2Decoder *
decoder, GstVideoCodecFrame * frame, GstMpeg2Picture * picture);
static void
gst_d3d11_mpeg2_dec_class_init (GstD3D11Mpeg2DecClass * klass, gpointer data)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
GstVideoDecoderClass *decoder_class = GST_VIDEO_DECODER_CLASS (klass);
GstMpeg2DecoderClass *mpeg2decoder_class = GST_MPEG2_DECODER_CLASS (klass);
GstD3D11DecoderClassData *cdata = (GstD3D11DecoderClassData *) data;
gobject_class->get_property = gst_d3d11_mpeg2_dec_get_property;
gobject_class->finalize = gst_d3d11_mpeg2_dec_finalize;
element_class->set_context =
GST_DEBUG_FUNCPTR (gst_d3d11_mpeg2_dec_set_context);
parent_class = (GstElementClass *) g_type_class_peek_parent (klass);
gst_d3d11_decoder_class_data_fill_subclass_data (cdata, &klass->class_data);
/**
* GstD3D11Mpeg2Dec:adapter-luid:
*
* DXGI Adapter LUID for this element
*
* Since: 1.20
*/
gst_d3d11_decoder_proxy_class_init (element_class, cdata,
"Seungha Yang <seungha@centricular.com>");
decoder_class->open = GST_DEBUG_FUNCPTR (gst_d3d11_mpeg2_dec_open);
decoder_class->close = GST_DEBUG_FUNCPTR (gst_d3d11_mpeg2_dec_close);
decoder_class->negotiate = GST_DEBUG_FUNCPTR (gst_d3d11_mpeg2_dec_negotiate);
decoder_class->decide_allocation =
GST_DEBUG_FUNCPTR (gst_d3d11_mpeg2_dec_decide_allocation);
decoder_class->src_query = GST_DEBUG_FUNCPTR (gst_d3d11_mpeg2_dec_src_query);
decoder_class->sink_event =
GST_DEBUG_FUNCPTR (gst_d3d11_mpeg2_dec_sink_event);
mpeg2decoder_class->new_sequence =
GST_DEBUG_FUNCPTR (gst_d3d11_mpeg2_dec_new_sequence);
mpeg2decoder_class->new_picture =
GST_DEBUG_FUNCPTR (gst_d3d11_mpeg2_dec_new_picture);
mpeg2decoder_class->new_field_picture =
GST_DEBUG_FUNCPTR (gst_d3d11_mpeg2_dec_new_field_picture);
mpeg2decoder_class->start_picture =
GST_DEBUG_FUNCPTR (gst_d3d11_mpeg2_dec_start_picture);
mpeg2decoder_class->decode_slice =
GST_DEBUG_FUNCPTR (gst_d3d11_mpeg2_dec_decode_slice);
mpeg2decoder_class->end_picture =
GST_DEBUG_FUNCPTR (gst_d3d11_mpeg2_dec_end_picture);
mpeg2decoder_class->output_picture =
GST_DEBUG_FUNCPTR (gst_d3d11_mpeg2_dec_output_picture);
}
static void
gst_d3d11_mpeg2_dec_init (GstD3D11Mpeg2Dec * self)
{
self->inner = new GstD3D11Mpeg2DecInner ();
}
static void
gst_d3d11_mpeg2_dec_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstD3D11Mpeg2DecClass *klass = GST_D3D11_MPEG2_DEC_GET_CLASS (object);
GstD3D11DecoderSubClassData *cdata = &klass->class_data;
gst_d3d11_decoder_proxy_get_property (object, prop_id, value, pspec, cdata);
}
static void
gst_d3d11_mpeg2_dec_finalize (GObject * object)
{
GstD3D11Mpeg2Dec *self = GST_D3D11_MPEG2_DEC (object);
delete self->inner;
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gst_d3d11_mpeg2_dec_set_context (GstElement * element, GstContext * context)
{
GstD3D11Mpeg2Dec *self = GST_D3D11_MPEG2_DEC (element);
GstD3D11Mpeg2DecInner *inner = self->inner;
GstD3D11Mpeg2DecClass *klass = GST_D3D11_MPEG2_DEC_GET_CLASS (self);
GstD3D11DecoderSubClassData *cdata = &klass->class_data;
gst_d3d11_handle_set_context_for_adapter_luid (element,
context, cdata->adapter_luid, &inner->device);
GST_ELEMENT_CLASS (parent_class)->set_context (element, context);
}
static gboolean
gst_d3d11_mpeg2_dec_open (GstVideoDecoder * decoder)
{
GstD3D11Mpeg2Dec *self = GST_D3D11_MPEG2_DEC (decoder);
GstD3D11Mpeg2DecInner *inner = self->inner;
GstD3D11Mpeg2DecClass *klass = GST_D3D11_MPEG2_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;
}
return TRUE;
}
static gboolean
gst_d3d11_mpeg2_dec_close (GstVideoDecoder * decoder)
{
GstD3D11Mpeg2Dec *self = GST_D3D11_MPEG2_DEC (decoder);
GstD3D11Mpeg2DecInner *inner = self->inner;
gst_clear_object (&inner->d3d11_decoder);
gst_clear_object (&inner->device);
return TRUE;
}
static gboolean
gst_d3d11_mpeg2_dec_negotiate (GstVideoDecoder * decoder)
{
GstD3D11Mpeg2Dec *self = GST_D3D11_MPEG2_DEC (decoder);
GstD3D11Mpeg2DecInner *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_mpeg2_dec_decide_allocation (GstVideoDecoder * decoder,
GstQuery * query)
{
GstD3D11Mpeg2Dec *self = GST_D3D11_MPEG2_DEC (decoder);
GstD3D11Mpeg2DecInner *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_mpeg2_dec_src_query (GstVideoDecoder * decoder, GstQuery * query)
{
GstD3D11Mpeg2Dec *self = GST_D3D11_MPEG2_DEC (decoder);
GstD3D11Mpeg2DecInner *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_mpeg2_dec_sink_event (GstVideoDecoder * decoder, GstEvent * event)
{
GstD3D11Mpeg2Dec *self = GST_D3D11_MPEG2_DEC (decoder);
GstD3D11Mpeg2DecInner *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_mpeg2_dec_new_sequence (GstMpeg2Decoder * decoder,
const GstMpegVideoSequenceHdr * seq,
const GstMpegVideoSequenceExt * seq_ext,
const GstMpegVideoSequenceDisplayExt * seq_display_ext,
const GstMpegVideoSequenceScalableExt * seq_scalable_ext)
{
GstD3D11Mpeg2Dec *self = GST_D3D11_MPEG2_DEC (decoder);
GstD3D11Mpeg2DecInner *inner = self->inner;
gboolean interlaced;
gboolean modified = FALSE;
gint width, height;
GstMpegVideoProfile mpeg_profile;
GST_LOG_OBJECT (self, "new sequence");
interlaced = seq_ext ? !seq_ext->progressive : FALSE;
if (inner->interlaced != interlaced) {
GST_INFO_OBJECT (self, "interlaced sequence change");
inner->interlaced = interlaced;
modified = TRUE;
}
width = seq->width;
height = seq->height;
if (seq_ext) {
width = (width & 0x0fff) | ((guint32) seq_ext->horiz_size_ext << 12);
height = (height & 0x0fff) | ((guint32) seq_ext->vert_size_ext << 12);
}
if (inner->width != width || inner->height != height) {
GST_INFO_OBJECT (self, "resolution change %dx%d -> %dx%d",
inner->width, inner->height, width, height);
inner->width = width;
inner->height = height;
inner->width_in_mb = GST_ROUND_UP_16 (width) >> 4;
inner->height_in_mb = GST_ROUND_UP_16 (height) >> 4;
modified = TRUE;
}
mpeg_profile = GST_MPEG_VIDEO_PROFILE_MAIN;
if (seq_ext)
mpeg_profile = (GstMpegVideoProfile) seq_ext->profile;
if (mpeg_profile != GST_MPEG_VIDEO_PROFILE_MAIN &&
mpeg_profile != GST_MPEG_VIDEO_PROFILE_SIMPLE) {
GST_ERROR_OBJECT (self, "Cannot support profile %d", mpeg_profile);
return GST_FLOW_NOT_NEGOTIATED;
}
if (inner->profile != mpeg_profile) {
GST_INFO_OBJECT (self, "Profile change %d -> %d",
inner->profile, mpeg_profile);
inner->profile = mpeg_profile;
modified = TRUE;
}
if (modified || !gst_d3d11_decoder_is_configured (inner->d3d11_decoder)) {
GstVideoInfo info;
/* FIXME: support I420 */
inner->out_format = GST_VIDEO_FORMAT_NV12;
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;
if (!gst_d3d11_decoder_configure (inner->d3d11_decoder,
decoder->input_state, &info,
inner->width, inner->height, NUM_OUTPUT_VIEW)) {
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_mpeg2_dec_new_picture (GstMpeg2Decoder * decoder,
GstVideoCodecFrame * frame, GstMpeg2Picture * picture)
{
GstD3D11Mpeg2Dec *self = GST_D3D11_MPEG2_DEC (decoder);
GstD3D11Mpeg2DecInner *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_ERROR;
}
GST_LOG_OBJECT (self, "New output view buffer %" GST_PTR_FORMAT, view_buffer);
gst_mpeg2_picture_set_user_data (picture,
view_buffer, (GDestroyNotify) gst_buffer_unref);
GST_LOG_OBJECT (self, "New MPEG2 picture %p", picture);
return GST_FLOW_OK;
}
static GstFlowReturn
gst_d3d11_mpeg2_dec_new_field_picture (GstMpeg2Decoder * decoder,
GstMpeg2Picture * first_field, GstMpeg2Picture * second_field)
{
GstD3D11Mpeg2Dec *self = GST_D3D11_MPEG2_DEC (decoder);
GstBuffer *view_buffer;
view_buffer = (GstBuffer *)
gst_mpeg2_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_mpeg2_picture_set_user_data (second_field,
gst_buffer_ref (view_buffer), (GDestroyNotify) gst_buffer_unref);
return GST_FLOW_OK;
}
static ID3D11VideoDecoderOutputView *
gst_d3d11_mpeg2_dec_get_output_view_from_picture (GstD3D11Mpeg2Dec * self,
GstMpeg2Picture * picture, guint8 * view_id)
{
GstD3D11Mpeg2DecInner *inner = self->inner;
GstBuffer *view_buffer;
ID3D11VideoDecoderOutputView *view;
if (!picture)
return NULL;
view_buffer = (GstBuffer *) gst_mpeg2_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 inline WORD
_pack_f_codes (guint8 f_code[2][2])
{
return (((WORD) f_code[0][0] << 12)
| ((WORD) f_code[0][1] << 8)
| ((WORD) f_code[1][0] << 4)
| (f_code[1][1]));
}
static inline WORD
_pack_pce_elements (GstMpeg2Slice * slice)
{
return (((WORD) slice->pic_ext->intra_dc_precision << 14)
| ((WORD) slice->pic_ext->picture_structure << 12)
| ((WORD) slice->pic_ext->top_field_first << 11)
| ((WORD) slice->pic_ext->frame_pred_frame_dct << 10)
| ((WORD) slice->pic_ext->concealment_motion_vectors << 9)
| ((WORD) slice->pic_ext->q_scale_type << 8)
| ((WORD) slice->pic_ext->intra_vlc_format << 7)
| ((WORD) slice->pic_ext->alternate_scan << 6)
| ((WORD) slice->pic_ext->repeat_first_field << 5)
| ((WORD) slice->pic_ext->chroma_420_type << 4)
| ((WORD) slice->pic_ext->progressive_frame << 3));
}
static GstFlowReturn
gst_d3d11_mpeg2_dec_start_picture (GstMpeg2Decoder * decoder,
GstMpeg2Picture * picture, GstMpeg2Slice * slice,
GstMpeg2Picture * prev_picture, GstMpeg2Picture * next_picture)
{
GstD3D11Mpeg2Dec *self = GST_D3D11_MPEG2_DEC (decoder);
GstD3D11Mpeg2DecInner *inner = self->inner;
DXVA_PictureParameters *pic_params = &inner->pic_params;
DXVA_QmatrixData *iq_matrix = &inner->iq_matrix;
ID3D11VideoDecoderOutputView *view;
ID3D11VideoDecoderOutputView *other_view;
guint8 view_id = 0xff;
guint8 other_view_id = 0xff;
gboolean is_field =
picture->structure != GST_MPEG_VIDEO_PICTURE_STRUCTURE_FRAME;
view = gst_d3d11_mpeg2_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 (pic_params, 0, sizeof (DXVA_PictureParameters));
memset (iq_matrix, 0, sizeof (DXVA_QmatrixData));
/* Fill DXVA_PictureParameters */
pic_params->wDecodedPictureIndex = view_id;
pic_params->wForwardRefPictureIndex = 0xffff;
pic_params->wBackwardRefPictureIndex = 0xffff;
switch (picture->type) {
case GST_MPEG_VIDEO_PICTURE_TYPE_B:{
if (next_picture) {
other_view =
gst_d3d11_mpeg2_dec_get_output_view_from_picture (self,
next_picture, &other_view_id);
if (other_view)
pic_params->wBackwardRefPictureIndex = other_view_id;
}
}
/* fall-through */
case GST_MPEG_VIDEO_PICTURE_TYPE_P:{
if (prev_picture) {
other_view =
gst_d3d11_mpeg2_dec_get_output_view_from_picture (self,
prev_picture, &other_view_id);
if (other_view)
pic_params->wForwardRefPictureIndex = other_view_id;
}
}
default:
break;
}
pic_params->wPicWidthInMBminus1 = inner->width_in_mb - 1;
pic_params->wPicHeightInMBminus1 = (inner->height_in_mb >> is_field) - 1;
pic_params->bMacroblockWidthMinus1 = 15;
pic_params->bMacroblockHeightMinus1 = 15;
pic_params->bBlockWidthMinus1 = 7;
pic_params->bBlockHeightMinus1 = 7;
pic_params->bBPPminus1 = 7;
pic_params->bPicStructure = (BYTE) picture->structure;
if (picture->first_field && is_field) {
pic_params->bSecondField = TRUE;
}
pic_params->bPicIntra = picture->type == GST_MPEG_VIDEO_PICTURE_TYPE_I;
pic_params->bPicBackwardPrediction =
picture->type == GST_MPEG_VIDEO_PICTURE_TYPE_B;
/* FIXME: 1 -> 4:2:0, 2 -> 4:2:2, 3 -> 4:4:4 */
pic_params->bChromaFormat = 1;
pic_params->bPicScanFixed = 1;
pic_params->bPicScanMethod = slice->pic_ext->alternate_scan;
pic_params->wBitstreamFcodes = _pack_f_codes (slice->pic_ext->f_code);
pic_params->wBitstreamPCEelements = _pack_pce_elements (slice);
/* Fill DXVA_QmatrixData */
if (slice->quant_matrix &&
/* The value in bNewQmatrix[0] and bNewQmatrix[1] must not both be zero.
* https://docs.microsoft.com/en-us/windows-hardware/drivers/ddi/dxva/ns-dxva-_dxva_qmatrixdata
*/
(slice->quant_matrix->load_intra_quantiser_matrix ||
slice->quant_matrix->load_non_intra_quantiser_matrix)) {
GstMpegVideoQuantMatrixExt *quant_matrix = slice->quant_matrix;
if (quant_matrix->load_intra_quantiser_matrix) {
iq_matrix->bNewQmatrix[0] = 1;
for (guint i = 0; i < 64; i++) {
iq_matrix->Qmatrix[0][i] = quant_matrix->intra_quantiser_matrix[i];
}
}
if (quant_matrix->load_non_intra_quantiser_matrix) {
iq_matrix->bNewQmatrix[1] = 1;
for (guint i = 0; i < 64; i++) {
iq_matrix->Qmatrix[1][i] = quant_matrix->non_intra_quantiser_matrix[i];
}
}
if (quant_matrix->load_chroma_intra_quantiser_matrix) {
iq_matrix->bNewQmatrix[2] = 1;
for (guint i = 0; i < 64; i++) {
iq_matrix->Qmatrix[2][i] =
quant_matrix->chroma_intra_quantiser_matrix[i];
}
}
if (quant_matrix->load_chroma_non_intra_quantiser_matrix) {
iq_matrix->bNewQmatrix[3] = 1;
for (guint i = 0; i < 64; i++) {
iq_matrix->Qmatrix[3][i] =
quant_matrix->chroma_non_intra_quantiser_matrix[i];
}
}
inner->submit_iq_data = TRUE;
} else {
inner->submit_iq_data = FALSE;
}
inner->slice_list.resize (0);
inner->bitstream_buffer.resize (0);
return GST_FLOW_OK;
}
static GstFlowReturn
gst_d3d11_mpeg2_dec_decode_slice (GstMpeg2Decoder * decoder,
GstMpeg2Picture * picture, GstMpeg2Slice * slice)
{
GstD3D11Mpeg2Dec *self = GST_D3D11_MPEG2_DEC (decoder);
GstD3D11Mpeg2DecInner *inner = self->inner;
GstMpegVideoSliceHdr *header = &slice->header;
GstMpegVideoPacket *packet = &slice->packet;
DXVA_SliceInfo slice_info = { 0, };
g_assert (packet->offset >= 4);
slice_info.wHorizontalPosition = header->mb_column;
slice_info.wVerticalPosition = header->mb_row;
/* including start code 4 bytes */
slice_info.dwSliceBitsInBuffer = 8 * (packet->size + 4);
slice_info.dwSliceDataLocation = inner->bitstream_buffer.size ();
/* XXX: We don't have information about the number of MBs in this slice.
* Just store offset here, and actual number will be calculated later */
slice_info.wNumberMBsInSlice =
(header->mb_row * inner->width_in_mb) + header->mb_column;
slice_info.wQuantizerScaleCode = header->quantiser_scale_code;
slice_info.wMBbitOffset = header->header_size + 32;
inner->slice_list.push_back (slice_info);
size_t pos = inner->bitstream_buffer.size ();
inner->bitstream_buffer.resize (pos + packet->size + 4);
memcpy (&inner->bitstream_buffer[0] + pos, packet->data + packet->offset - 4,
packet->size + 4);
return GST_FLOW_OK;
}
static GstFlowReturn
gst_d3d11_mpeg2_dec_end_picture (GstMpeg2Decoder * decoder,
GstMpeg2Picture * picture)
{
GstD3D11Mpeg2Dec *self = GST_D3D11_MPEG2_DEC (decoder);
GstD3D11Mpeg2DecInner *inner = self->inner;
ID3D11VideoDecoderOutputView *view;
guint8 view_id = 0xff;
GstD3D11DecodeInputStreamArgs input_args;
gboolean is_field =
picture->structure != GST_MPEG_VIDEO_PICTURE_STRUCTURE_FRAME;
guint mb_count = inner->width_in_mb * (inner->height_in_mb >> is_field);
if (inner->bitstream_buffer.empty ()) {
GST_ERROR_OBJECT (self, "No bitstream buffer to submit");
return GST_FLOW_ERROR;
}
view = gst_d3d11_mpeg2_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));
DXVA_SliceInfo *first = &inner->slice_list[0];
for (size_t i = 0; i < inner->slice_list.size (); i++) {
DXVA_SliceInfo *slice = first + i;
/* Update the number of MBs per slice */
if (i == inner->slice_list.size () - 1) {
slice->wNumberMBsInSlice = mb_count - slice->wNumberMBsInSlice;
} else {
DXVA_SliceInfo *next = first + i + 1;
slice->wNumberMBsInSlice =
next->wNumberMBsInSlice - slice->wNumberMBsInSlice;
}
}
input_args.picture_params = &inner->pic_params;
input_args.picture_params_size = sizeof (DXVA_PictureParameters);
input_args.slice_control = &inner->slice_list[0];
input_args.slice_control_size =
sizeof (DXVA_SliceInfo) * inner->slice_list.size ();
input_args.bitstream = &inner->bitstream_buffer[0];
input_args.bitstream_size = inner->bitstream_buffer.size ();
if (inner->submit_iq_data) {
input_args.inverse_quantization_matrix = &inner->iq_matrix;
input_args.inverse_quantization_matrix_size = sizeof (DXVA_QmatrixData);
}
if (!gst_d3d11_decoder_decode_frame (inner->d3d11_decoder, view, &input_args))
return GST_FLOW_ERROR;
return GST_FLOW_OK;
}
static GstFlowReturn
gst_d3d11_mpeg2_dec_output_picture (GstMpeg2Decoder * decoder,
GstVideoCodecFrame * frame, GstMpeg2Picture * picture)
{
GstD3D11Mpeg2Dec *self = GST_D3D11_MPEG2_DEC (decoder);
GstD3D11Mpeg2DecInner *inner = self->inner;
GstVideoDecoder *vdec = GST_VIDEO_DECODER (decoder);
GstBuffer *view_buffer;
GST_LOG_OBJECT (self, "Outputting picture %p", picture);
view_buffer = (GstBuffer *) gst_mpeg2_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_mpeg2_picture_unref (picture);
return gst_video_decoder_finish_frame (vdec, frame);
error:
gst_mpeg2_picture_unref (picture);
gst_video_decoder_release_frame (vdec, frame);
return GST_FLOW_ERROR;
}
void
gst_d3d11_mpeg2_dec_register (GstPlugin * plugin, GstD3D11Device * device,
guint rank)
{
GType type;
gchar *type_name;
gchar *feature_name;
guint index = 0;
GTypeInfo type_info = {
sizeof (GstD3D11Mpeg2DecClass),
NULL,
NULL,
(GClassInitFunc) gst_d3d11_mpeg2_dec_class_init,
NULL,
NULL,
sizeof (GstD3D11Mpeg2Dec),
0,
(GInstanceInitFunc) gst_d3d11_mpeg2_dec_init,
};
const GUID *supported_profile = NULL;
GstCaps *sink_caps = NULL;
GstCaps *src_caps = NULL;
if (!gst_d3d11_decoder_get_supported_decoder_profile (device,
GST_DXVA_CODEC_MPEG2, GST_VIDEO_FORMAT_NV12, &supported_profile)) {
GST_INFO_OBJECT (device, "device does not support MPEG-2 video decoding");
return;
}
sink_caps = gst_caps_from_string ("video/mpeg, "
"mpegversion = (int)2, systemstream = (boolean) false, "
"profile = (string) { main, simple }");
src_caps = gst_caps_from_string ("video/x-raw("
GST_CAPS_FEATURE_MEMORY_D3D11_MEMORY "); video/x-raw");
/* NOTE: We are supporting only 4:2:0, main or simple profiles */
gst_caps_set_simple (src_caps, "format", G_TYPE_STRING, "NV12", NULL);
gst_caps_set_simple (sink_caps,
"width", GST_TYPE_INT_RANGE, 1, 1920,
"height", GST_TYPE_INT_RANGE, 1, 1920, NULL);
gst_caps_set_simple (src_caps,
"width", GST_TYPE_INT_RANGE, 1, 1920,
"height", GST_TYPE_INT_RANGE, 1, 1920, NULL);
type_info.class_data =
gst_d3d11_decoder_class_data_new (device, GST_DXVA_CODEC_MPEG2,
sink_caps, src_caps);
type_name = g_strdup ("GstD3D11Mpeg2Dec");
feature_name = g_strdup ("d3d11mpeg2dec");
while (g_type_from_name (type_name)) {
index++;
g_free (type_name);
g_free (feature_name);
type_name = g_strdup_printf ("GstD3D11Mpeg2Device%dDec", index);
feature_name = g_strdup_printf ("d3d11mpeg2device%ddec", index);
}
type = g_type_register_static (GST_TYPE_MPEG2_DECODER,
type_name, &type_info, (GTypeFlags) 0);
/* make lower rank than default device */
if (rank > 0 && index != 0)
rank--;
if (index != 0)
gst_element_type_set_skip_documentation (type);
if (!gst_element_register (plugin, feature_name, rank, type))
GST_WARNING ("Failed to register plugin '%s'", type_name);
g_free (type_name);
g_free (feature_name);
}