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gstreamer/sys/d3d11/gstd3d11mpeg2dec.cpp
Seungha Yang bcdd2c4984 d3d11decoder: Move zero-copy decision logic into decoder object 
Get rid of all duplicated code for zero-copy decision and output buffer
allocation

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/2117>
2021-03-28 18:00:28 +09:00

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/* GStreamer
* Copyright (C) 2021 Seungha Yang <seungha@centricular.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/**
* SECTION:element-d3d11mpeg2dec
* @title: d3d11mpeg2dec
*
* A Direct3D11/DXVA based MPEG-2 video decoder
*
* ## Example launch line
* ```
* gst-launch-1.0 filesrc location=/path/to/mpeg2/file ! parsebin ! d3d11mpeg2dec ! d3d11videosink
* ```
*
* Since: 1.20
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "gstd3d11mpeg2dec.h"
#include <gst/codecs/gstmpeg2decoder.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>
/* *INDENT-OFF* */
G_BEGIN_DECLS
GST_DEBUG_CATEGORY_EXTERN (gst_d3d11_mpeg2_dec_debug);
#define GST_CAT_DEFAULT gst_d3d11_mpeg2_dec_debug
G_END_DECLS
/* *INDENT-ON* */
enum
{
PROP_0,
PROP_ADAPTER,
PROP_DEVICE_ID,
PROP_VENDOR_ID,
};
/* reference list 2 + 4 margin */
#define NUM_OUTPUT_VIEW 6
typedef struct _GstD3D11Mpeg2Dec
{
GstMpeg2Decoder parent;
GstD3D11Device *device;
GstD3D11Decoder *d3d11_decoder;
gint width, height;
guint width_in_mb, height_in_mb;
GstVideoFormat out_format;
GstMpegVideoSequenceHdr seq;
GstMpegVideoProfile profile;
gboolean interlaced;
/* Array of DXVA_SliceInfo */
GArray *slice_list;
gboolean submit_iq_data;
/* Pointing current bitstream buffer */
guint written_buffer_size;
guint remaining_buffer_size;
guint8 *bitstream_buffer_data;
} GstD3D11Mpeg2Dec;
typedef struct _GstD3D11Mpeg2DecClass
{
GstMpeg2DecoderClass parent_class;
guint adapter;
guint device_id;
guint vendor_id;
} 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_finalize (GObject * object);
static void gst_d3d11_mpeg2_dec_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec);
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_flush (GstVideoDecoder * decoder);
/* GstMpeg2Decoder */
static gboolean 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 gboolean gst_d3d11_mpeg2_dec_new_picture (GstMpeg2Decoder * decoder,
GstVideoCodecFrame * frame, GstMpeg2Picture * picture);
static gboolean gst_d3d11_mpeg2_dec_new_field_picture (GstMpeg2Decoder *
decoder, const GstMpeg2Picture * first_field,
GstMpeg2Picture * second_field);
static gboolean gst_d3d11_mpeg2_dec_start_picture (GstMpeg2Decoder * decoder,
GstMpeg2Picture * picture, GstMpeg2Slice * slice,
GstMpeg2Picture * prev_picture, GstMpeg2Picture * next_picture);
static gboolean gst_d3d11_mpeg2_dec_decode_slice (GstMpeg2Decoder * decoder,
GstMpeg2Picture * picture, GstMpeg2Slice * slice);
static gboolean 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;
gchar *long_name;
gobject_class->get_property = gst_d3d11_mpeg2_dec_get_property;
gobject_class->finalize = gst_d3d11_mpeg2_dec_finalize;
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,
(GParamFlags) (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,
(GParamFlags) (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,
(GParamFlags) (G_PARAM_READABLE | G_PARAM_STATIC_STRINGS)));
parent_class = (GstElementClass *) 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_mpeg2_dec_set_context);
long_name =
g_strdup_printf ("Direct3D11/DXVA MPEG2 %s Decoder", cdata->description);
gst_element_class_set_metadata (element_class, long_name,
"Codec/Decoder/Video/Hardware", "A Direct3D11/DXVA MPEG2 video decoder",
"Seungha Yang <seungha@centricular.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_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->flush = GST_DEBUG_FUNCPTR (gst_d3d11_mpeg2_dec_flush);
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->slice_list = g_array_new (FALSE, TRUE, sizeof (DXVA_SliceInfo));
self->profile = GST_MPEG_VIDEO_PROFILE_MAIN;
}
static void
gst_d3d11_mpeg2_dec_finalize (GObject * object)
{
GstD3D11Mpeg2Dec *self = GST_D3D11_MPEG2_DEC (object);
g_array_unref (self->slice_list);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
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);
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_mpeg2_dec_set_context (GstElement * element, GstContext * context)
{
GstD3D11Mpeg2Dec *self = GST_D3D11_MPEG2_DEC (element);
GstD3D11Mpeg2DecClass *klass = GST_D3D11_MPEG2_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_mpeg2_dec_open (GstVideoDecoder * decoder)
{
GstD3D11Mpeg2Dec *self = GST_D3D11_MPEG2_DEC (decoder);
GstD3D11Mpeg2DecClass *klass = GST_D3D11_MPEG2_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_mpeg2_dec_close (GstVideoDecoder * decoder)
{
GstD3D11Mpeg2Dec *self = GST_D3D11_MPEG2_DEC (decoder);
gst_clear_object (&self->d3d11_decoder);
gst_clear_object (&self->device);
return TRUE;
}
static gboolean
gst_d3d11_mpeg2_dec_negotiate (GstVideoDecoder * decoder)
{
GstD3D11Mpeg2Dec *self = GST_D3D11_MPEG2_DEC (decoder);
if (!gst_d3d11_decoder_negotiate (self->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);
if (!gst_d3d11_decoder_decide_allocation (self->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);
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_CONTEXT:
if (gst_d3d11_handle_context_query (GST_ELEMENT (decoder),
query, self->device)) {
return TRUE;
}
break;
default:
break;
}
return GST_VIDEO_DECODER_CLASS (parent_class)->src_query (decoder, query);
}
static gboolean
gst_d3d11_mpeg2_dec_flush (GstVideoDecoder * decoder)
{
GstD3D11Mpeg2Dec *self = GST_D3D11_MPEG2_DEC (decoder);
if (self->d3d11_decoder)
gst_d3d11_decoder_flush (self->d3d11_decoder, decoder);
return GST_VIDEO_DECODER_CLASS (parent_class)->flush (decoder);
}
static gboolean
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);
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 (self->interlaced != interlaced) {
GST_INFO_OBJECT (self, "interlaced sequence change");
self->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 (self->width != width || self->height != height) {
GST_INFO_OBJECT (self, "resolution change %dx%d -> %dx%d",
self->width, self->height, width, height);
self->width = width;
self->height = height;
self->width_in_mb = GST_ROUND_UP_16 (width) >> 4;
self->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 FALSE;
}
if (self->profile != mpeg_profile) {
GST_INFO_OBJECT (self, "Profile change %d -> %d",
self->profile, mpeg_profile);
self->profile = mpeg_profile;
modified = TRUE;
}
if (modified || !gst_d3d11_decoder_is_configured (self->d3d11_decoder)) {
GstVideoInfo info;
/* FIXME: support I420 */
self->out_format = GST_VIDEO_FORMAT_NV12;
gst_video_info_set_format (&info,
self->out_format, self->width, self->height);
if (self->interlaced)
GST_VIDEO_INFO_INTERLACE_MODE (&info) = GST_VIDEO_INTERLACE_MODE_MIXED;
if (!gst_d3d11_decoder_configure (self->d3d11_decoder,
GST_D3D11_CODEC_MPEG2, decoder->input_state, &info,
self->width, self->height, NUM_OUTPUT_VIEW)) {
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_mpeg2_dec_new_picture (GstMpeg2Decoder * decoder,
GstVideoCodecFrame * frame, GstMpeg2Picture * picture)
{
GstD3D11Mpeg2Dec *self = GST_D3D11_MPEG2_DEC (decoder);
GstBuffer *view_buffer;
view_buffer = gst_d3d11_decoder_get_output_view_buffer (self->d3d11_decoder,
GST_VIDEO_DECODER (decoder));
if (!view_buffer) {
GST_ERROR_OBJECT (self, "No available output view buffer");
return FALSE;
}
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 TRUE;
}
static gboolean
gst_d3d11_mpeg2_dec_new_field_picture (GstMpeg2Decoder * decoder,
const 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 ((GstMpeg2Picture *) first_field);
if (!view_buffer) {
GST_WARNING_OBJECT (self, "First picture does not have output view buffer");
return TRUE;
}
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 TRUE;
}
static gboolean
gst_d3d11_mpeg2_dec_get_bitstream_buffer (GstD3D11Mpeg2Dec * self)
{
GST_TRACE_OBJECT (self, "Getting bitstream buffer");
self->written_buffer_size = 0;
self->remaining_buffer_size = 0;
self->bitstream_buffer_data = NULL;
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;
return TRUE;
}
static ID3D11VideoDecoderOutputView *
gst_d3d11_mpeg2_dec_get_output_view_from_picture (GstD3D11Mpeg2Dec * self,
GstMpeg2Picture * picture, guint8 * view_id)
{
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 (self->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 gboolean
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);
ID3D11VideoDecoderOutputView *view;
ID3D11VideoDecoderOutputView *other_view;
guint8 view_id = 0xff;
guint8 other_view_id = 0xff;
DXVA_PictureParameters pic_params = { 0, };
DXVA_QmatrixData iq_matrix = { 0, };
guint d3d11_buffer_size = 0;
gpointer d3d11_buffer = NULL;
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 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;
}
/* 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;
}
/* *INDENT-OFF* */
pic_params.wPicWidthInMBminus1 = self->width_in_mb - 1;
pic_params.wPicHeightInMBminus1 = (self->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;
pic_params.bSecondField = is_field && ! !picture->first_field;
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);
/* *INDENT-ON* */
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 (pic_params));
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;
}
/* 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;
self->submit_iq_data = TRUE;
if (quant_matrix->load_intra_quantiser_matrix) {
iq_matrix.bNewQmatrix[0] = 1;
memcpy (iq_matrix.Qmatrix[0], quant_matrix->intra_quantiser_matrix,
sizeof (quant_matrix->intra_quantiser_matrix));
}
if (quant_matrix->load_non_intra_quantiser_matrix) {
iq_matrix.bNewQmatrix[1] = 1;
memcpy (iq_matrix.Qmatrix[1], quant_matrix->non_intra_quantiser_matrix,
sizeof (quant_matrix->non_intra_quantiser_matrix));
}
if (quant_matrix->load_chroma_intra_quantiser_matrix) {
iq_matrix.bNewQmatrix[2] = 1;
memcpy (iq_matrix.Qmatrix[2], quant_matrix->chroma_intra_quantiser_matrix,
sizeof (quant_matrix->chroma_intra_quantiser_matrix));
}
if (quant_matrix->load_chroma_non_intra_quantiser_matrix) {
iq_matrix.bNewQmatrix[3] = 1;
memcpy (iq_matrix.Qmatrix[3],
quant_matrix->chroma_non_intra_quantiser_matrix,
sizeof (quant_matrix->chroma_non_intra_quantiser_matrix));
}
GST_TRACE_OBJECT (self, "Getting inverse quantization matrix 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_QmatrixData));
GST_TRACE_OBJECT (self, "Release inverse quantization matrix 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;
}
} else {
self->submit_iq_data = FALSE;
}
g_array_set_size (self->slice_list, 0);
return gst_d3d11_mpeg2_dec_get_bitstream_buffer (self);
}
static gboolean
gst_d3d11_mpeg2_dec_submit_slice_data (GstD3D11Mpeg2Dec * self,
GstMpeg2Picture * picture)
{
guint buffer_size;
gpointer buffer;
guint8 *data;
gsize offset = 0;
guint i;
D3D11_VIDEO_DECODER_BUFFER_DESC buffer_desc[4];
gboolean ret;
guint buffer_count = 0;
DXVA_SliceInfo *slice_data;
gboolean is_field =
picture->structure != GST_MPEG_VIDEO_PICTURE_STRUCTURE_FRAME;
guint mb_count = self->width_in_mb * (self->height_in_mb >> is_field);
if (self->slice_list->len < 1) {
GST_WARNING_OBJECT (self, "Nothing to submit");
return FALSE;
}
memset (buffer_desc, 0, sizeof (buffer_desc));
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 = (guint8 *) buffer;
for (i = 0; i < self->slice_list->len; i++) {
slice_data = &g_array_index (self->slice_list, DXVA_SliceInfo, i);
/* Update the number of MBs per slice */
if (i == self->slice_list->len - 1) {
slice_data->wNumberMBsInSlice = mb_count - slice_data->wNumberMBsInSlice;
} else {
DXVA_SliceInfo *next =
&g_array_index (self->slice_list, DXVA_SliceInfo, i + 1);
slice_data->wNumberMBsInSlice =
next->wNumberMBsInSlice - slice_data->wNumberMBsInSlice;
}
memcpy (data + offset, slice_data, sizeof (DXVA_SliceInfo));
offset += sizeof (DXVA_SliceInfo);
}
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[buffer_count].BufferType =
D3D11_VIDEO_DECODER_BUFFER_PICTURE_PARAMETERS;
buffer_desc[buffer_count].DataOffset = 0;
buffer_desc[buffer_count].DataSize = sizeof (DXVA_PictureParameters);
buffer_count++;
if (self->submit_iq_data) {
buffer_desc[buffer_count].BufferType =
D3D11_VIDEO_DECODER_BUFFER_INVERSE_QUANTIZATION_MATRIX;
buffer_desc[buffer_count].DataOffset = 0;
buffer_desc[buffer_count].DataSize = sizeof (DXVA_QmatrixData);
buffer_count++;
}
buffer_desc[buffer_count].BufferType =
D3D11_VIDEO_DECODER_BUFFER_SLICE_CONTROL;
buffer_desc[buffer_count].DataOffset = 0;
buffer_desc[buffer_count].DataSize =
sizeof (DXVA_SliceInfo) * self->slice_list->len;
buffer_count++;
buffer_desc[buffer_count].BufferType = D3D11_VIDEO_DECODER_BUFFER_BITSTREAM;
buffer_desc[buffer_count].DataOffset = 0;
buffer_desc[buffer_count].DataSize = self->written_buffer_size;
buffer_count++;
ret = gst_d3d11_decoder_submit_decoder_buffers (self->d3d11_decoder,
buffer_count, 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_mpeg2_dec_decode_slice (GstMpeg2Decoder * decoder,
GstMpeg2Picture * picture, GstMpeg2Slice * slice)
{
GstD3D11Mpeg2Dec *self = GST_D3D11_MPEG2_DEC (decoder);
GstMpegVideoSliceHdr *header = &slice->header;
GstMpegVideoPacket *packet = &slice->packet;
/* including start code 4 bytes */
guint to_write = packet->size + 4;
DXVA_SliceInfo slice_info = { 0, };
g_assert (packet->offset >= 4);
/* FIXME: DXVA wants to know the number of MBs per slice
* (not sure whether it's actually used by driver). But in case that
* one slice is splitted into two bitstream buffer, it's almost impossible
* to know the number of MBs per splitted bitstream buffer.
* So, we will not support too large bitstream buffer which requires multiple
* hardware bitstream buffer at this moment.
*/
if (self->remaining_buffer_size < to_write) {
/* Submit slice data we have so that release acquired bitstream buffers */
if (self->bitstream_buffer_data)
gst_d3d11_mpeg2_dec_submit_slice_data (self, picture);
self->bitstream_buffer_data = 0;
GST_ERROR_OBJECT (self, "Slice data is too large");
return FALSE;
}
slice_info.wHorizontalPosition = header->mb_column;
slice_info.wVerticalPosition = header->mb_row;
slice_info.dwSliceBitsInBuffer = 8 * to_write;
slice_info.dwSliceDataLocation = self->written_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 * self->width_in_mb) + header->mb_column;
slice_info.wQuantizerScaleCode = header->quantiser_scale_code;
slice_info.wMBbitOffset = header->header_size + 32;
memcpy (self->bitstream_buffer_data, packet->data + packet->offset - 4,
to_write);
g_array_append_val (self->slice_list, slice_info);
self->remaining_buffer_size -= to_write;
self->written_buffer_size += to_write;
self->bitstream_buffer_data += to_write;
return TRUE;
}
static GstFlowReturn
gst_d3d11_mpeg2_dec_output_picture (GstMpeg2Decoder * decoder,
GstVideoCodecFrame * frame, GstMpeg2Picture * picture)
{
GstD3D11Mpeg2Dec *self = GST_D3D11_MPEG2_DEC (decoder);
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 (self->d3d11_decoder, vdec,
self->width, self->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_video_decoder_drop_frame (vdec, frame);
gst_mpeg2_picture_unref (picture);
return GST_FLOW_ERROR;
}
static gboolean
gst_d3d11_mpeg2_dec_end_picture (GstMpeg2Decoder * decoder,
GstMpeg2Picture * picture)
{
GstD3D11Mpeg2Dec *self = GST_D3D11_MPEG2_DEC (decoder);
if (!gst_d3d11_mpeg2_dec_submit_slice_data (self, picture)) {
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;
}
typedef struct
{
guint width;
guint height;
} GstD3D11Mpeg2DecResolution;
void
gst_d3d11_mpeg2_dec_register (GstPlugin * plugin, GstD3D11Device * device,
GstD3D11Decoder * decoder, 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 (decoder,
GST_D3D11_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, 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 (!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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