gstreamer/subprojects/gst-plugins-bad/gst-libs/gst/dxva/gstdxvampeg2decoder.cpp

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/* GStreamer
* Copyright (C) 2023 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstdxvampeg2decoder.h"
#include <string.h>
#include <vector>
#include "gstdxvatypedef.h"
GST_DEBUG_CATEGORY_STATIC (gst_dxva_mpeg2_decoder_debug);
#define GST_CAT_DEFAULT gst_dxva_mpeg2_decoder_debug
/* *INDENT-OFF* */
struct _GstDxvaMpeg2DecoderPrivate
{
DXVA_PictureParameters pic_params;
DXVA_QmatrixData iq_matrix;
std::vector<DXVA_SliceInfo> slice_list;
std::vector<guint8> bitstream_buffer;
GPtrArray *ref_pics = nullptr;
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;
gboolean configured = FALSE;
};
/* *INDENT-ON* */
static void gst_dxva_mpeg2_decoder_finalize (GObject * object);
static gboolean gst_dxva_mpeg2_decoder_start (GstVideoDecoder * decoder);
static GstFlowReturn gst_dxva_mpeg2_decoder_new_sequence (GstMpeg2Decoder *
decoder, const GstMpegVideoSequenceHdr * seq,
const GstMpegVideoSequenceExt * seq_ext,
const GstMpegVideoSequenceDisplayExt * seq_display_ext,
const GstMpegVideoSequenceScalableExt * seq_scalable_ext,
gint max_dpb_size);
static GstFlowReturn
gst_dxva_mpeg2_decoder_new_picture (GstMpeg2Decoder * decoder,
GstVideoCodecFrame * frame, GstMpeg2Picture * picture);
static GstFlowReturn
gst_dxva_mpeg2_decoder_new_field_picture (GstMpeg2Decoder * decoder,
GstMpeg2Picture * first_field, GstMpeg2Picture * second_field);
static GstFlowReturn
gst_dxva_mpeg2_decoder_start_picture (GstMpeg2Decoder * decoder,
GstMpeg2Picture * picture, GstMpeg2Slice * slice,
GstMpeg2Picture * prev_picture, GstMpeg2Picture * next_picture);
static GstFlowReturn
gst_dxva_mpeg2_decoder_decode_slice (GstMpeg2Decoder * decoder,
GstMpeg2Picture * picture, GstMpeg2Slice * slice);
static GstFlowReturn
gst_dxva_mpeg2_decoder_end_picture (GstMpeg2Decoder * decoder,
GstMpeg2Picture * picture);
static GstFlowReturn
gst_dxva_mpeg2_decoder_output_picture (GstMpeg2Decoder * decoder,
GstVideoCodecFrame * frame, GstMpeg2Picture * picture);
#define gst_dxva_mpeg2_decoder_parent_class parent_class
G_DEFINE_ABSTRACT_TYPE_WITH_CODE (GstDxvaMpeg2Decoder,
gst_dxva_mpeg2_decoder, GST_TYPE_MPEG2_DECODER,
GST_DEBUG_CATEGORY_INIT (gst_dxva_mpeg2_decoder_debug, "dxvampeg2decoder",
0, "dxvampeg2decoder"));
static void
gst_dxva_mpeg2_decoder_class_init (GstDxvaMpeg2DecoderClass * klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GstVideoDecoderClass *decoder_class = GST_VIDEO_DECODER_CLASS (klass);
GstMpeg2DecoderClass *mpeg2decoder_class = GST_MPEG2_DECODER_CLASS (klass);
gobject_class->finalize = gst_dxva_mpeg2_decoder_finalize;
decoder_class->start = GST_DEBUG_FUNCPTR (gst_dxva_mpeg2_decoder_start);
mpeg2decoder_class->new_sequence =
GST_DEBUG_FUNCPTR (gst_dxva_mpeg2_decoder_new_sequence);
mpeg2decoder_class->new_picture =
GST_DEBUG_FUNCPTR (gst_dxva_mpeg2_decoder_new_picture);
mpeg2decoder_class->new_field_picture =
GST_DEBUG_FUNCPTR (gst_dxva_mpeg2_decoder_new_field_picture);
mpeg2decoder_class->start_picture =
GST_DEBUG_FUNCPTR (gst_dxva_mpeg2_decoder_start_picture);
mpeg2decoder_class->decode_slice =
GST_DEBUG_FUNCPTR (gst_dxva_mpeg2_decoder_decode_slice);
mpeg2decoder_class->end_picture =
GST_DEBUG_FUNCPTR (gst_dxva_mpeg2_decoder_end_picture);
mpeg2decoder_class->output_picture =
GST_DEBUG_FUNCPTR (gst_dxva_mpeg2_decoder_output_picture);
}
static void
gst_dxva_mpeg2_decoder_init (GstDxvaMpeg2Decoder * self)
{
self->priv = new GstDxvaMpeg2DecoderPrivate ();
self->priv->ref_pics = g_ptr_array_new ();
}
static void
gst_dxva_mpeg2_decoder_finalize (GObject * object)
{
GstDxvaMpeg2Decoder *self = GST_DXVA_MPEG2_DECODER (object);
GstDxvaMpeg2DecoderPrivate *priv = self->priv;
g_ptr_array_unref (priv->ref_pics);
delete self->priv;
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gst_dxva_mpeg2_decoder_reset (GstDxvaMpeg2Decoder * self)
{
GstDxvaMpeg2DecoderPrivate *priv = self->priv;
priv->width = 0;
priv->height = 0;
priv->width_in_mb = 0;
priv->height_in_mb = 0;
priv->out_format = GST_VIDEO_FORMAT_UNKNOWN;
priv->profile = GST_MPEG_VIDEO_PROFILE_MAIN;
priv->interlaced = FALSE;
priv->configured = FALSE;
}
static gboolean
gst_dxva_mpeg2_decoder_start (GstVideoDecoder * decoder)
{
GstDxvaMpeg2Decoder *self = GST_DXVA_MPEG2_DECODER (decoder);
gst_dxva_mpeg2_decoder_reset (self);
return GST_VIDEO_DECODER_CLASS (parent_class)->start (decoder);
}
static GstFlowReturn
gst_dxva_mpeg2_decoder_new_sequence (GstMpeg2Decoder * decoder,
const GstMpegVideoSequenceHdr * seq,
const GstMpegVideoSequenceExt * seq_ext,
const GstMpegVideoSequenceDisplayExt * seq_display_ext,
const GstMpegVideoSequenceScalableExt * seq_scalable_ext, gint max_dpb_size)
{
GstDxvaMpeg2Decoder *self = GST_DXVA_MPEG2_DECODER (decoder);
GstDxvaMpeg2DecoderPrivate *priv = self->priv;
GstDxvaMpeg2DecoderClass *klass = GST_DXVA_MPEG2_DECODER_GET_CLASS (self);
gboolean interlaced;
gboolean modified = FALSE;
gint width, height;
GstMpegVideoProfile mpeg_profile;
GstVideoInfo info;
GstFlowReturn ret;
GST_LOG_OBJECT (self, "new sequence");
interlaced = seq_ext ? !seq_ext->progressive : FALSE;
if (priv->interlaced != interlaced) {
GST_INFO_OBJECT (self, "interlaced sequence change, %d -> %d",
priv->interlaced, interlaced);
priv->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 (priv->width != width || priv->height != height) {
GST_INFO_OBJECT (self, "resolution change %dx%d -> %dx%d",
priv->width, priv->height, width, height);
priv->width = width;
priv->height = height;
priv->width_in_mb = GST_ROUND_UP_16 (width) >> 4;
priv->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 (priv->profile != mpeg_profile) {
GST_INFO_OBJECT (self, "Profile change %d -> %d",
priv->profile, mpeg_profile);
priv->profile = mpeg_profile;
modified = TRUE;
}
if (!modified && priv->configured)
return GST_FLOW_OK;
priv->out_format = GST_VIDEO_FORMAT_NV12;
gst_video_info_set_interlaced_format (&info,
priv->out_format, priv->interlaced ? GST_VIDEO_INTERLACE_MODE_MIXED :
GST_VIDEO_INTERLACE_MODE_PROGRESSIVE, priv->width, priv->height);
g_assert (klass->configure);
ret = klass->configure (self, decoder->input_state, &info, 0, 0, priv->width,
priv->height, max_dpb_size);
if (ret == GST_FLOW_OK) {
priv->configured = TRUE;
if (!gst_video_decoder_negotiate (GST_VIDEO_DECODER (self))) {
GST_WARNING_OBJECT (self, "Couldn't negotiate with new sequence");
ret = GST_FLOW_NOT_NEGOTIATED;
}
} else {
priv->configured = FALSE;
}
return ret;
}
static GstFlowReturn
gst_dxva_mpeg2_decoder_new_picture (GstMpeg2Decoder * decoder,
GstVideoCodecFrame * frame, GstMpeg2Picture * picture)
{
GstDxvaMpeg2Decoder *self = GST_DXVA_MPEG2_DECODER (decoder);
GstDxvaMpeg2DecoderClass *klass = GST_DXVA_MPEG2_DECODER_GET_CLASS (self);
g_assert (klass->new_picture);
return klass->new_picture (self, GST_CODEC_PICTURE (picture));
}
static GstFlowReturn
gst_dxva_mpeg2_decoder_new_field_picture (GstMpeg2Decoder * decoder,
GstMpeg2Picture * first_field, GstMpeg2Picture * second_field)
{
GstDxvaMpeg2Decoder *self = GST_DXVA_MPEG2_DECODER (decoder);
GstDxvaMpeg2DecoderClass *klass = GST_DXVA_MPEG2_DECODER_GET_CLASS (self);
g_assert (klass->duplicate_picture);
return klass->duplicate_picture (self, GST_CODEC_PICTURE (first_field),
GST_CODEC_PICTURE (second_field));
}
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_dxva_mpeg2_decoder_start_picture (GstMpeg2Decoder * decoder,
GstMpeg2Picture * picture, GstMpeg2Slice * slice,
GstMpeg2Picture * prev_picture, GstMpeg2Picture * next_picture)
{
GstDxvaMpeg2Decoder *self = GST_DXVA_MPEG2_DECODER (decoder);
GstDxvaMpeg2DecoderPrivate *priv = self->priv;
GstDxvaMpeg2DecoderClass *klass = GST_DXVA_MPEG2_DECODER_GET_CLASS (self);
DXVA_PictureParameters *pic_params = &priv->pic_params;
DXVA_QmatrixData *iq_matrix = &priv->iq_matrix;
GstCodecPicture *codec_picture = GST_CODEC_PICTURE (picture);
gboolean is_field =
picture->structure != GST_MPEG_VIDEO_PICTURE_STRUCTURE_FRAME;
GstFlowReturn ret;
guint8 picture_id;
g_assert (klass->start_picture);
g_assert (klass->get_picture_id);
ret = klass->start_picture (self, codec_picture, &picture_id);
if (ret != GST_FLOW_OK)
return ret;
priv->slice_list.resize (0);
priv->bitstream_buffer.resize (0);
g_ptr_array_set_size (priv->ref_pics, 0);
memset (pic_params, 0, sizeof (DXVA_PictureParameters));
memset (iq_matrix, 0, sizeof (DXVA_QmatrixData));
/* Fill DXVA_PictureParameters */
pic_params->wDecodedPictureIndex = picture_id;
pic_params->wForwardRefPictureIndex = 0xffff;
pic_params->wBackwardRefPictureIndex = 0xffff;
switch (picture->type) {
case GST_MPEG_VIDEO_PICTURE_TYPE_B:
{
if (next_picture) {
picture_id = klass->get_picture_id (self,
GST_CODEC_PICTURE (next_picture));
if (picture_id != 0xff) {
pic_params->wBackwardRefPictureIndex = picture_id;
g_ptr_array_add (priv->ref_pics, next_picture);
}
}
}
/* fall-through */
case GST_MPEG_VIDEO_PICTURE_TYPE_P:
{
if (prev_picture) {
picture_id = klass->get_picture_id (self,
GST_CODEC_PICTURE (prev_picture));
if (picture_id != 0xff) {
pic_params->wForwardRefPictureIndex = picture_id;
g_ptr_array_add (priv->ref_pics, prev_picture);
}
}
}
default:
break;
}
pic_params->wPicWidthInMBminus1 = priv->width_in_mb - 1;
pic_params->wPicHeightInMBminus1 = (priv->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];
}
}
priv->submit_iq_data = TRUE;
} 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);
}