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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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Build gir for documentation Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5481>
531 lines
18 KiB
C++
531 lines
18 KiB
C++
/* GStreamer
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* Copyright (C) 2023 Seungha Yang <seungha@centricular.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "gstdxvampeg2decoder.h"
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#include <string.h>
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#include <vector>
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#include "gstdxvatypedef.h"
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GST_DEBUG_CATEGORY_STATIC (gst_dxva_mpeg2_decoder_debug);
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#define GST_CAT_DEFAULT gst_dxva_mpeg2_decoder_debug
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/* *INDENT-OFF* */
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struct _GstDxvaMpeg2DecoderPrivate
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{
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DXVA_PictureParameters pic_params;
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DXVA_QmatrixData iq_matrix;
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std::vector<DXVA_SliceInfo> slice_list;
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std::vector<guint8> bitstream_buffer;
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GPtrArray *ref_pics = nullptr;
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gboolean submit_iq_data;
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gint width = 0;
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gint height = 0;
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guint width_in_mb = 0;
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guint height_in_mb = 0;
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GstVideoFormat out_format = GST_VIDEO_FORMAT_UNKNOWN;
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GstMpegVideoSequenceHdr seq;
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GstMpegVideoProfile profile = GST_MPEG_VIDEO_PROFILE_MAIN;
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gboolean interlaced = FALSE;
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gboolean configured = FALSE;
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};
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/* *INDENT-ON* */
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static void gst_dxva_mpeg2_decoder_finalize (GObject * object);
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static gboolean gst_dxva_mpeg2_decoder_start (GstVideoDecoder * decoder);
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static GstFlowReturn gst_dxva_mpeg2_decoder_new_sequence (GstMpeg2Decoder *
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decoder, const GstMpegVideoSequenceHdr * seq,
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const GstMpegVideoSequenceExt * seq_ext,
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const GstMpegVideoSequenceDisplayExt * seq_display_ext,
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const GstMpegVideoSequenceScalableExt * seq_scalable_ext,
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gint max_dpb_size);
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static GstFlowReturn
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gst_dxva_mpeg2_decoder_new_picture (GstMpeg2Decoder * decoder,
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GstVideoCodecFrame * frame, GstMpeg2Picture * picture);
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static GstFlowReturn
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gst_dxva_mpeg2_decoder_new_field_picture (GstMpeg2Decoder * decoder,
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GstMpeg2Picture * first_field, GstMpeg2Picture * second_field);
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static GstFlowReturn
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gst_dxva_mpeg2_decoder_start_picture (GstMpeg2Decoder * decoder,
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GstMpeg2Picture * picture, GstMpeg2Slice * slice,
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GstMpeg2Picture * prev_picture, GstMpeg2Picture * next_picture);
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static GstFlowReturn
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gst_dxva_mpeg2_decoder_decode_slice (GstMpeg2Decoder * decoder,
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GstMpeg2Picture * picture, GstMpeg2Slice * slice);
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static GstFlowReturn
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gst_dxva_mpeg2_decoder_end_picture (GstMpeg2Decoder * decoder,
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GstMpeg2Picture * picture);
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static GstFlowReturn
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gst_dxva_mpeg2_decoder_output_picture (GstMpeg2Decoder * decoder,
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GstVideoCodecFrame * frame, GstMpeg2Picture * picture);
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#define gst_dxva_mpeg2_decoder_parent_class parent_class
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G_DEFINE_ABSTRACT_TYPE_WITH_CODE (GstDxvaMpeg2Decoder,
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gst_dxva_mpeg2_decoder, GST_TYPE_MPEG2_DECODER,
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GST_DEBUG_CATEGORY_INIT (gst_dxva_mpeg2_decoder_debug, "dxvampeg2decoder",
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0, "dxvampeg2decoder"));
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static void
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gst_dxva_mpeg2_decoder_class_init (GstDxvaMpeg2DecoderClass * klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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GstVideoDecoderClass *decoder_class = GST_VIDEO_DECODER_CLASS (klass);
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GstMpeg2DecoderClass *mpeg2decoder_class = GST_MPEG2_DECODER_CLASS (klass);
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gobject_class->finalize = gst_dxva_mpeg2_decoder_finalize;
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decoder_class->start = GST_DEBUG_FUNCPTR (gst_dxva_mpeg2_decoder_start);
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mpeg2decoder_class->new_sequence =
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GST_DEBUG_FUNCPTR (gst_dxva_mpeg2_decoder_new_sequence);
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mpeg2decoder_class->new_picture =
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GST_DEBUG_FUNCPTR (gst_dxva_mpeg2_decoder_new_picture);
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mpeg2decoder_class->new_field_picture =
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GST_DEBUG_FUNCPTR (gst_dxva_mpeg2_decoder_new_field_picture);
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mpeg2decoder_class->start_picture =
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GST_DEBUG_FUNCPTR (gst_dxva_mpeg2_decoder_start_picture);
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mpeg2decoder_class->decode_slice =
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GST_DEBUG_FUNCPTR (gst_dxva_mpeg2_decoder_decode_slice);
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mpeg2decoder_class->end_picture =
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GST_DEBUG_FUNCPTR (gst_dxva_mpeg2_decoder_end_picture);
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mpeg2decoder_class->output_picture =
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GST_DEBUG_FUNCPTR (gst_dxva_mpeg2_decoder_output_picture);
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}
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static void
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gst_dxva_mpeg2_decoder_init (GstDxvaMpeg2Decoder * self)
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{
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self->priv = new GstDxvaMpeg2DecoderPrivate ();
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self->priv->ref_pics = g_ptr_array_new ();
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}
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static void
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gst_dxva_mpeg2_decoder_finalize (GObject * object)
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{
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GstDxvaMpeg2Decoder *self = GST_DXVA_MPEG2_DECODER (object);
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GstDxvaMpeg2DecoderPrivate *priv = self->priv;
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g_ptr_array_unref (priv->ref_pics);
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delete self->priv;
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static void
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gst_dxva_mpeg2_decoder_reset (GstDxvaMpeg2Decoder * self)
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{
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GstDxvaMpeg2DecoderPrivate *priv = self->priv;
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priv->width = 0;
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priv->height = 0;
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priv->width_in_mb = 0;
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priv->height_in_mb = 0;
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priv->out_format = GST_VIDEO_FORMAT_UNKNOWN;
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priv->profile = GST_MPEG_VIDEO_PROFILE_MAIN;
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priv->interlaced = FALSE;
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priv->configured = FALSE;
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}
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static gboolean
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gst_dxva_mpeg2_decoder_start (GstVideoDecoder * decoder)
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{
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GstDxvaMpeg2Decoder *self = GST_DXVA_MPEG2_DECODER (decoder);
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gst_dxva_mpeg2_decoder_reset (self);
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return GST_VIDEO_DECODER_CLASS (parent_class)->start (decoder);
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}
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static GstFlowReturn
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gst_dxva_mpeg2_decoder_new_sequence (GstMpeg2Decoder * decoder,
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const GstMpegVideoSequenceHdr * seq,
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const GstMpegVideoSequenceExt * seq_ext,
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const GstMpegVideoSequenceDisplayExt * seq_display_ext,
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const GstMpegVideoSequenceScalableExt * seq_scalable_ext, gint max_dpb_size)
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{
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GstDxvaMpeg2Decoder *self = GST_DXVA_MPEG2_DECODER (decoder);
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GstDxvaMpeg2DecoderPrivate *priv = self->priv;
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GstDxvaMpeg2DecoderClass *klass = GST_DXVA_MPEG2_DECODER_GET_CLASS (self);
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gboolean interlaced;
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gboolean modified = FALSE;
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gint width, height;
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GstMpegVideoProfile mpeg_profile;
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GstVideoInfo info;
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GstFlowReturn ret;
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GST_LOG_OBJECT (self, "new sequence");
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interlaced = seq_ext ? !seq_ext->progressive : FALSE;
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if (priv->interlaced != interlaced) {
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GST_INFO_OBJECT (self, "interlaced sequence change, %d -> %d",
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priv->interlaced, interlaced);
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priv->interlaced = interlaced;
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modified = TRUE;
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}
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width = seq->width;
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height = seq->height;
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if (seq_ext) {
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width = (width & 0x0fff) | ((guint32) seq_ext->horiz_size_ext << 12);
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height = (height & 0x0fff) | ((guint32) seq_ext->vert_size_ext << 12);
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}
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if (priv->width != width || priv->height != height) {
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GST_INFO_OBJECT (self, "resolution change %dx%d -> %dx%d",
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priv->width, priv->height, width, height);
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priv->width = width;
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priv->height = height;
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priv->width_in_mb = GST_ROUND_UP_16 (width) >> 4;
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priv->height_in_mb = GST_ROUND_UP_16 (height) >> 4;
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modified = TRUE;
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}
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mpeg_profile = GST_MPEG_VIDEO_PROFILE_MAIN;
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if (seq_ext)
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mpeg_profile = (GstMpegVideoProfile) seq_ext->profile;
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if (mpeg_profile != GST_MPEG_VIDEO_PROFILE_MAIN &&
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mpeg_profile != GST_MPEG_VIDEO_PROFILE_SIMPLE) {
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GST_ERROR_OBJECT (self, "Cannot support profile %d", mpeg_profile);
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return GST_FLOW_NOT_NEGOTIATED;
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}
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if (priv->profile != mpeg_profile) {
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GST_INFO_OBJECT (self, "Profile change %d -> %d",
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priv->profile, mpeg_profile);
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priv->profile = mpeg_profile;
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modified = TRUE;
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}
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if (!modified && priv->configured)
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return GST_FLOW_OK;
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priv->out_format = GST_VIDEO_FORMAT_NV12;
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gst_video_info_set_interlaced_format (&info,
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priv->out_format, priv->interlaced ? GST_VIDEO_INTERLACE_MODE_MIXED :
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GST_VIDEO_INTERLACE_MODE_PROGRESSIVE, priv->width, priv->height);
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g_assert (klass->configure);
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ret = klass->configure (self, decoder->input_state, &info, 0, 0, priv->width,
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priv->height, max_dpb_size);
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if (ret == GST_FLOW_OK) {
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priv->configured = TRUE;
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if (!gst_video_decoder_negotiate (GST_VIDEO_DECODER (self))) {
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GST_WARNING_OBJECT (self, "Couldn't negotiate with new sequence");
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ret = GST_FLOW_NOT_NEGOTIATED;
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}
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} else {
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priv->configured = FALSE;
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}
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return ret;
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}
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static GstFlowReturn
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gst_dxva_mpeg2_decoder_new_picture (GstMpeg2Decoder * decoder,
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GstVideoCodecFrame * frame, GstMpeg2Picture * picture)
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{
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GstDxvaMpeg2Decoder *self = GST_DXVA_MPEG2_DECODER (decoder);
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GstDxvaMpeg2DecoderClass *klass = GST_DXVA_MPEG2_DECODER_GET_CLASS (self);
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g_assert (klass->new_picture);
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return klass->new_picture (self, GST_CODEC_PICTURE (picture));
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}
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static GstFlowReturn
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gst_dxva_mpeg2_decoder_new_field_picture (GstMpeg2Decoder * decoder,
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GstMpeg2Picture * first_field, GstMpeg2Picture * second_field)
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{
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GstDxvaMpeg2Decoder *self = GST_DXVA_MPEG2_DECODER (decoder);
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GstDxvaMpeg2DecoderClass *klass = GST_DXVA_MPEG2_DECODER_GET_CLASS (self);
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g_assert (klass->duplicate_picture);
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return klass->duplicate_picture (self, GST_CODEC_PICTURE (first_field),
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GST_CODEC_PICTURE (second_field));
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}
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static inline WORD
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_pack_f_codes (guint8 f_code[2][2])
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{
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return (((WORD) f_code[0][0] << 12)
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| ((WORD) f_code[0][1] << 8)
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| ((WORD) f_code[1][0] << 4)
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| (f_code[1][1]));
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}
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static inline WORD
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_pack_pce_elements (GstMpeg2Slice * slice)
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{
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return (((WORD) slice->pic_ext->intra_dc_precision << 14)
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| ((WORD) slice->pic_ext->picture_structure << 12)
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| ((WORD) slice->pic_ext->top_field_first << 11)
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| ((WORD) slice->pic_ext->frame_pred_frame_dct << 10)
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| ((WORD) slice->pic_ext->concealment_motion_vectors << 9)
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| ((WORD) slice->pic_ext->q_scale_type << 8)
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| ((WORD) slice->pic_ext->intra_vlc_format << 7)
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| ((WORD) slice->pic_ext->alternate_scan << 6)
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| ((WORD) slice->pic_ext->repeat_first_field << 5)
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| ((WORD) slice->pic_ext->chroma_420_type << 4)
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| ((WORD) slice->pic_ext->progressive_frame << 3));
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}
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static GstFlowReturn
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gst_dxva_mpeg2_decoder_start_picture (GstMpeg2Decoder * decoder,
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GstMpeg2Picture * picture, GstMpeg2Slice * slice,
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GstMpeg2Picture * prev_picture, GstMpeg2Picture * next_picture)
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{
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GstDxvaMpeg2Decoder *self = GST_DXVA_MPEG2_DECODER (decoder);
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GstDxvaMpeg2DecoderPrivate *priv = self->priv;
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GstDxvaMpeg2DecoderClass *klass = GST_DXVA_MPEG2_DECODER_GET_CLASS (self);
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DXVA_PictureParameters *pic_params = &priv->pic_params;
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DXVA_QmatrixData *iq_matrix = &priv->iq_matrix;
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GstCodecPicture *codec_picture = GST_CODEC_PICTURE (picture);
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gboolean is_field =
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picture->structure != GST_MPEG_VIDEO_PICTURE_STRUCTURE_FRAME;
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GstFlowReturn ret;
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guint8 picture_id;
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g_assert (klass->start_picture);
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g_assert (klass->get_picture_id);
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ret = klass->start_picture (self, codec_picture, &picture_id);
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if (ret != GST_FLOW_OK)
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return ret;
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priv->slice_list.resize (0);
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priv->bitstream_buffer.resize (0);
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g_ptr_array_set_size (priv->ref_pics, 0);
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memset (pic_params, 0, sizeof (DXVA_PictureParameters));
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memset (iq_matrix, 0, sizeof (DXVA_QmatrixData));
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/* Fill DXVA_PictureParameters */
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pic_params->wDecodedPictureIndex = picture_id;
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pic_params->wForwardRefPictureIndex = 0xffff;
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pic_params->wBackwardRefPictureIndex = 0xffff;
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switch (picture->type) {
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case GST_MPEG_VIDEO_PICTURE_TYPE_B:
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{
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if (next_picture) {
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picture_id = klass->get_picture_id (self,
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GST_CODEC_PICTURE (next_picture));
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if (picture_id != 0xff) {
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pic_params->wBackwardRefPictureIndex = picture_id;
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g_ptr_array_add (priv->ref_pics, next_picture);
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}
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}
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}
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/* fall-through */
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case GST_MPEG_VIDEO_PICTURE_TYPE_P:
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{
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if (prev_picture) {
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picture_id = klass->get_picture_id (self,
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GST_CODEC_PICTURE (prev_picture));
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if (picture_id != 0xff) {
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pic_params->wForwardRefPictureIndex = picture_id;
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g_ptr_array_add (priv->ref_pics, prev_picture);
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}
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}
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}
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default:
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break;
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}
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pic_params->wPicWidthInMBminus1 = priv->width_in_mb - 1;
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pic_params->wPicHeightInMBminus1 = (priv->height_in_mb >> is_field) - 1;
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pic_params->bMacroblockWidthMinus1 = 15;
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pic_params->bMacroblockHeightMinus1 = 15;
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pic_params->bBlockWidthMinus1 = 7;
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pic_params->bBlockHeightMinus1 = 7;
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pic_params->bBPPminus1 = 7;
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pic_params->bPicStructure = (BYTE) picture->structure;
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if (picture->first_field && is_field) {
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pic_params->bSecondField = TRUE;
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}
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pic_params->bPicIntra = picture->type == GST_MPEG_VIDEO_PICTURE_TYPE_I;
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pic_params->bPicBackwardPrediction =
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picture->type == GST_MPEG_VIDEO_PICTURE_TYPE_B;
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/* FIXME: 1 -> 4:2:0, 2 -> 4:2:2, 3 -> 4:4:4 */
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pic_params->bChromaFormat = 1;
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pic_params->bPicScanFixed = 1;
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pic_params->bPicScanMethod = slice->pic_ext->alternate_scan;
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pic_params->wBitstreamFcodes = _pack_f_codes (slice->pic_ext->f_code);
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pic_params->wBitstreamPCEelements = _pack_pce_elements (slice);
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/* Fill DXVA_QmatrixData */
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if (slice->quant_matrix &&
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/* The value in bNewQmatrix[0] and bNewQmatrix[1] must not both be zero.
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* https://docs.microsoft.com/en-us/windows-hardware/drivers/ddi/dxva/ns-dxva-_dxva_qmatrixdata
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*/
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(slice->quant_matrix->load_intra_quantiser_matrix ||
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slice->quant_matrix->load_non_intra_quantiser_matrix)) {
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GstMpegVideoQuantMatrixExt *quant_matrix = slice->quant_matrix;
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if (quant_matrix->load_intra_quantiser_matrix) {
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iq_matrix->bNewQmatrix[0] = 1;
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for (guint i = 0; i < 64; i++) {
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iq_matrix->Qmatrix[0][i] = quant_matrix->intra_quantiser_matrix[i];
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}
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}
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if (quant_matrix->load_non_intra_quantiser_matrix) {
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iq_matrix->bNewQmatrix[1] = 1;
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for (guint i = 0; i < 64; i++) {
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iq_matrix->Qmatrix[1][i] = quant_matrix->non_intra_quantiser_matrix[i];
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}
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}
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if (quant_matrix->load_chroma_intra_quantiser_matrix) {
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iq_matrix->bNewQmatrix[2] = 1;
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for (guint i = 0; i < 64; i++) {
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iq_matrix->Qmatrix[2][i] =
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quant_matrix->chroma_intra_quantiser_matrix[i];
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}
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}
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if (quant_matrix->load_chroma_non_intra_quantiser_matrix) {
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iq_matrix->bNewQmatrix[3] = 1;
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for (guint i = 0; i < 64; i++) {
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iq_matrix->Qmatrix[3][i] =
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quant_matrix->chroma_non_intra_quantiser_matrix[i];
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}
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}
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priv->submit_iq_data = TRUE;
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} else {
|
|
priv->submit_iq_data = FALSE;
|
|
}
|
|
|
|
return GST_FLOW_OK;
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_dxva_mpeg2_decoder_decode_slice (GstMpeg2Decoder * decoder,
|
|
GstMpeg2Picture * picture, GstMpeg2Slice * slice)
|
|
{
|
|
GstDxvaMpeg2Decoder *self = GST_DXVA_MPEG2_DECODER (decoder);
|
|
GstDxvaMpeg2DecoderPrivate *priv = self->priv;
|
|
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 = priv->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 * priv->width_in_mb) + header->mb_column;
|
|
slice_info.wQuantizerScaleCode = header->quantiser_scale_code;
|
|
slice_info.wMBbitOffset = header->header_size + 32;
|
|
|
|
priv->slice_list.push_back (slice_info);
|
|
|
|
size_t pos = priv->bitstream_buffer.size ();
|
|
priv->bitstream_buffer.resize (pos + packet->size + 4);
|
|
memcpy (&priv->bitstream_buffer[0] + pos, packet->data + packet->offset - 4,
|
|
packet->size + 4);
|
|
|
|
return GST_FLOW_OK;
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_dxva_mpeg2_decoder_end_picture (GstMpeg2Decoder * decoder,
|
|
GstMpeg2Picture * picture)
|
|
{
|
|
GstDxvaMpeg2Decoder *self = GST_DXVA_MPEG2_DECODER (decoder);
|
|
GstDxvaMpeg2DecoderPrivate *priv = self->priv;
|
|
GstDxvaMpeg2DecoderClass *klass = GST_DXVA_MPEG2_DECODER_GET_CLASS (self);
|
|
GstDxvaDecodingArgs args;
|
|
gboolean is_field =
|
|
picture->structure != GST_MPEG_VIDEO_PICTURE_STRUCTURE_FRAME;
|
|
guint mb_count = priv->width_in_mb * (priv->height_in_mb >> is_field);
|
|
|
|
if (priv->bitstream_buffer.empty ()) {
|
|
GST_ERROR_OBJECT (self, "No bitstream buffer to submit");
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
|
|
memset (&args, 0, sizeof (GstDxvaDecodingArgs));
|
|
|
|
DXVA_SliceInfo *first = &priv->slice_list[0];
|
|
for (size_t i = 0; i < priv->slice_list.size (); i++) {
|
|
DXVA_SliceInfo *slice = first + i;
|
|
|
|
/* Update the number of MBs per slice */
|
|
if (i == priv->slice_list.size () - 1) {
|
|
slice->wNumberMBsInSlice = mb_count - slice->wNumberMBsInSlice;
|
|
} else {
|
|
DXVA_SliceInfo *next = first + i + 1;
|
|
slice->wNumberMBsInSlice =
|
|
next->wNumberMBsInSlice - slice->wNumberMBsInSlice;
|
|
}
|
|
}
|
|
|
|
args.picture_params = &priv->pic_params;
|
|
args.picture_params_size = sizeof (DXVA_PictureParameters);
|
|
args.slice_control = &priv->slice_list[0];
|
|
args.slice_control_size = sizeof (DXVA_SliceInfo) * priv->slice_list.size ();
|
|
args.bitstream = &priv->bitstream_buffer[0];
|
|
args.bitstream_size = priv->bitstream_buffer.size ();
|
|
if (priv->submit_iq_data) {
|
|
args.inverse_quantization_matrix = &priv->iq_matrix;
|
|
args.inverse_quantization_matrix_size = sizeof (DXVA_QmatrixData);
|
|
}
|
|
|
|
g_assert (klass->end_picture);
|
|
|
|
return klass->end_picture (self, GST_CODEC_PICTURE (picture),
|
|
priv->ref_pics, &args);
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_dxva_mpeg2_decoder_output_picture (GstMpeg2Decoder * decoder,
|
|
GstVideoCodecFrame * frame, GstMpeg2Picture * picture)
|
|
{
|
|
GstDxvaMpeg2Decoder *self = GST_DXVA_MPEG2_DECODER (decoder);
|
|
GstDxvaMpeg2DecoderPrivate *priv = self->priv;
|
|
GstDxvaMpeg2DecoderClass *klass = GST_DXVA_MPEG2_DECODER_GET_CLASS (self);
|
|
|
|
g_assert (klass->output_picture);
|
|
|
|
GST_LOG_OBJECT (self, "Outputting picture %p", picture);
|
|
|
|
return klass->output_picture (self, frame, GST_CODEC_PICTURE (picture),
|
|
picture->buffer_flags, priv->width, priv->height);
|
|
}
|