/* GStreamer * Copyright (C) 2019 Seungha Yang * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, * Boston, MA 02110-1301, USA. * * NOTE: some of implementations are copied/modified from Chromium code * * Copyright 2015 The Chromium Authors. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following disclaimer * in the documentation and/or other materials provided with the * distribution. * * Neither the name of Google Inc. nor the names of its * contributors may be used to endorse or promote products derived from * this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ /** * SECTION:element-d3d11h264dec * @title: d3d11h264dec * * A Direct3D11/DXVA based H.264 video decoder * * ## Example launch line * ``` * gst-launch-1.0 filesrc location=/path/to/h264/file ! parsebin ! d3d11h264dec ! d3d11videosink * ``` * * Since: 1.18 * */ #ifdef HAVE_CONFIG_H #include #endif #include "gstd3d11h264dec.h" #include #include /* HACK: to expose dxva data structure on UWP */ #ifdef WINAPI_PARTITION_DESKTOP #undef WINAPI_PARTITION_DESKTOP #endif #define WINAPI_PARTITION_DESKTOP 1 #include #include /* *INDENT-OFF* */ G_BEGIN_DECLS GST_DEBUG_CATEGORY_EXTERN (gst_d3d11_h264_dec_debug); #define GST_CAT_DEFAULT gst_d3d11_h264_dec_debug G_END_DECLS /* *INDENT-ON* */ enum { PROP_0, PROP_ADAPTER, PROP_DEVICE_ID, PROP_VENDOR_ID, }; typedef struct _GstD3D11H264Dec { GstH264Decoder parent; GstD3D11Device *device; gint width, height; gint coded_width, coded_height; gint bitdepth; guint8 chroma_format_idc; GstVideoFormat out_format; gboolean interlaced; gint max_dpb_size; /* Array of DXVA_Slice_H264_Short */ GArray *slice_list; GstD3D11Decoder *d3d11_decoder; /* Pointing current bitstream buffer */ gboolean bad_aligned_bitstream_buffer; guint written_buffer_size; guint remaining_buffer_size; guint8 *bitstream_buffer_data; DXVA_PicEntry_H264 ref_frame_list[16]; INT field_order_cnt_list[16][2]; USHORT frame_num_list[16]; UINT used_for_reference_flags; USHORT non_existing_frame_flags; } GstD3D11H264Dec; typedef struct _GstD3D11H264DecClass { GstH264DecoderClass parent_class; guint adapter; guint device_id; guint vendor_id; } GstD3D11H264DecClass; static GstElementClass *parent_class = NULL; #define GST_D3D11_H264_DEC(object) ((GstD3D11H264Dec *) (object)) #define GST_D3D11_H264_DEC_GET_CLASS(object) \ (G_TYPE_INSTANCE_GET_CLASS ((object),G_TYPE_FROM_INSTANCE (object),GstD3D11H264DecClass)) static void gst_d3d11_h264_dec_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec); static void gst_d3d11_h264_dec_dispose (GObject * object); static void gst_d3d11_h264_dec_set_context (GstElement * element, GstContext * context); static gboolean gst_d3d11_h264_dec_open (GstVideoDecoder * decoder); static gboolean gst_d3d11_h264_dec_close (GstVideoDecoder * decoder); static gboolean gst_d3d11_h264_dec_negotiate (GstVideoDecoder * decoder); static gboolean gst_d3d11_h264_dec_decide_allocation (GstVideoDecoder * decoder, GstQuery * query); static gboolean gst_d3d11_h264_dec_src_query (GstVideoDecoder * decoder, GstQuery * query); static gboolean gst_d3d11_h264_dec_sink_event (GstVideoDecoder * decoder, GstEvent * event); /* GstH264Decoder */ static gboolean gst_d3d11_h264_dec_new_sequence (GstH264Decoder * decoder, const GstH264SPS * sps, gint max_dpb_size); static gboolean gst_d3d11_h264_dec_new_picture (GstH264Decoder * decoder, GstVideoCodecFrame * frame, GstH264Picture * picture); static gboolean gst_d3d11_h264_dec_new_field_picture (GstH264Decoder * decoder, const GstH264Picture * first_field, GstH264Picture * second_field); static GstFlowReturn gst_d3d11_h264_dec_output_picture (GstH264Decoder * decoder, GstVideoCodecFrame * frame, GstH264Picture * picture); static gboolean gst_d3d11_h264_dec_start_picture (GstH264Decoder * decoder, GstH264Picture * picture, GstH264Slice * slice, GstH264Dpb * dpb); static gboolean gst_d3d11_h264_dec_decode_slice (GstH264Decoder * decoder, GstH264Picture * picture, GstH264Slice * slice, GArray * ref_pic_list0, GArray * ref_pic_list1); static gboolean gst_d3d11_h264_dec_end_picture (GstH264Decoder * decoder, GstH264Picture * picture); static gboolean gst_d3d11_h264_dec_fill_picture_params (GstD3D11H264Dec * self, const GstH264SliceHdr * slice_header, DXVA_PicParams_H264 * params); static void gst_d3d11_h264_dec_class_init (GstD3D11H264DecClass * klass, gpointer data) { GObjectClass *gobject_class = G_OBJECT_CLASS (klass); GstElementClass *element_class = GST_ELEMENT_CLASS (klass); GstVideoDecoderClass *decoder_class = GST_VIDEO_DECODER_CLASS (klass); GstH264DecoderClass *h264decoder_class = GST_H264_DECODER_CLASS (klass); GstD3D11DecoderClassData *cdata = (GstD3D11DecoderClassData *) data; gchar *long_name; gobject_class->get_property = gst_d3d11_h264_dec_get_property; gobject_class->dispose = gst_d3d11_h264_dec_dispose; 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_h264_dec_set_context); long_name = g_strdup_printf ("Direct3D11/DXVA H.264 %s Decoder", cdata->description); gst_element_class_set_metadata (element_class, long_name, "Codec/Decoder/Video/Hardware", "A Direct3D11/DXVA H.264 video decoder", "Seungha Yang "); 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_h264_dec_open); decoder_class->close = GST_DEBUG_FUNCPTR (gst_d3d11_h264_dec_close); decoder_class->negotiate = GST_DEBUG_FUNCPTR (gst_d3d11_h264_dec_negotiate); decoder_class->decide_allocation = GST_DEBUG_FUNCPTR (gst_d3d11_h264_dec_decide_allocation); decoder_class->src_query = GST_DEBUG_FUNCPTR (gst_d3d11_h264_dec_src_query); decoder_class->sink_event = GST_DEBUG_FUNCPTR (gst_d3d11_h264_dec_sink_event); h264decoder_class->new_sequence = GST_DEBUG_FUNCPTR (gst_d3d11_h264_dec_new_sequence); h264decoder_class->new_picture = GST_DEBUG_FUNCPTR (gst_d3d11_h264_dec_new_picture); h264decoder_class->new_field_picture = GST_DEBUG_FUNCPTR (gst_d3d11_h264_dec_new_field_picture); h264decoder_class->output_picture = GST_DEBUG_FUNCPTR (gst_d3d11_h264_dec_output_picture); h264decoder_class->start_picture = GST_DEBUG_FUNCPTR (gst_d3d11_h264_dec_start_picture); h264decoder_class->decode_slice = GST_DEBUG_FUNCPTR (gst_d3d11_h264_dec_decode_slice); h264decoder_class->end_picture = GST_DEBUG_FUNCPTR (gst_d3d11_h264_dec_end_picture); } static void gst_d3d11_h264_dec_init (GstD3D11H264Dec * self) { self->slice_list = g_array_new (FALSE, TRUE, sizeof (DXVA_Slice_H264_Short)); } static void gst_d3d11_h264_dec_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec) { GstD3D11H264DecClass *klass = GST_D3D11_H264_DEC_GET_CLASS (object); 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_h264_dec_dispose (GObject * object) { GstD3D11H264Dec *self = GST_D3D11_H264_DEC (object); if (self->slice_list) { g_array_unref (self->slice_list); self->slice_list = NULL; } G_OBJECT_CLASS (parent_class)->dispose (object); } static void gst_d3d11_h264_dec_set_context (GstElement * element, GstContext * context) { GstD3D11H264Dec *self = GST_D3D11_H264_DEC (element); GstD3D11H264DecClass *klass = GST_D3D11_H264_DEC_GET_CLASS (self); gst_d3d11_handle_set_context (element, context, klass->adapter, &self->device); GST_ELEMENT_CLASS (parent_class)->set_context (element, context); } /* Clear all codec specific (e.g., SPS) data */ static void gst_d3d11_h264_dec_reset (GstD3D11H264Dec * self) { self->width = 0; self->height = 0; self->coded_width = 0; self->coded_height = 0; self->bitdepth = 0; self->chroma_format_idc = 0; self->out_format = GST_VIDEO_FORMAT_UNKNOWN; self->interlaced = FALSE; self->max_dpb_size = 0; } static gboolean gst_d3d11_h264_dec_open (GstVideoDecoder * decoder) { GstD3D11H264Dec *self = GST_D3D11_H264_DEC (decoder); GstD3D11H264DecClass *klass = GST_D3D11_H264_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; } gst_d3d11_h264_dec_reset (self); return TRUE; } static gboolean gst_d3d11_h264_dec_close (GstVideoDecoder * decoder) { GstD3D11H264Dec *self = GST_D3D11_H264_DEC (decoder); gst_clear_object (&self->d3d11_decoder); gst_clear_object (&self->device); return TRUE; } static gboolean gst_d3d11_h264_dec_negotiate (GstVideoDecoder * decoder) { GstD3D11H264Dec *self = GST_D3D11_H264_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_h264_dec_decide_allocation (GstVideoDecoder * decoder, GstQuery * query) { GstD3D11H264Dec *self = GST_D3D11_H264_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_h264_dec_src_query (GstVideoDecoder * decoder, GstQuery * query) { GstD3D11H264Dec *self = GST_D3D11_H264_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_h264_dec_sink_event (GstVideoDecoder * decoder, GstEvent * event) { GstD3D11H264Dec *self = GST_D3D11_H264_DEC (decoder); switch (GST_EVENT_TYPE (event)) { case GST_EVENT_FLUSH_START: if (self->d3d11_decoder) gst_d3d11_decoder_set_flushing (self->d3d11_decoder, decoder, TRUE); break; case GST_EVENT_FLUSH_STOP: if (self->d3d11_decoder) gst_d3d11_decoder_set_flushing (self->d3d11_decoder, decoder, FALSE); default: break; } return GST_VIDEO_DECODER_CLASS (parent_class)->sink_event (decoder, event); } static gboolean gst_d3d11_h264_dec_new_sequence (GstH264Decoder * decoder, const GstH264SPS * sps, gint max_dpb_size) { GstD3D11H264Dec *self = GST_D3D11_H264_DEC (decoder); gint crop_width, crop_height; gboolean interlaced; gboolean modified = FALSE; GST_LOG_OBJECT (self, "new sequence"); if (sps->frame_cropping_flag) { crop_width = sps->crop_rect_width; crop_height = sps->crop_rect_height; } else { crop_width = sps->width; crop_height = sps->height; } if (self->width != crop_width || self->height != crop_height || self->coded_width != sps->width || self->coded_height != sps->height) { GST_INFO_OBJECT (self, "resolution changed %dx%d (%dx%d)", crop_width, crop_height, sps->width, sps->height); self->width = crop_width; self->height = crop_height; self->coded_width = sps->width; self->coded_height = sps->height; modified = TRUE; } if (self->bitdepth != sps->bit_depth_luma_minus8 + 8) { GST_INFO_OBJECT (self, "bitdepth changed"); self->bitdepth = (guint) sps->bit_depth_luma_minus8 + 8; modified = TRUE; } if (self->chroma_format_idc != sps->chroma_format_idc) { GST_INFO_OBJECT (self, "chroma format changed"); self->chroma_format_idc = sps->chroma_format_idc; modified = TRUE; } interlaced = !sps->frame_mbs_only_flag; if (self->interlaced != interlaced) { GST_INFO_OBJECT (self, "interlaced sequence changed"); self->interlaced = interlaced; modified = TRUE; } if (self->max_dpb_size < max_dpb_size) { GST_INFO_OBJECT (self, "Requires larger DPB size (%d -> %d)", self->max_dpb_size, max_dpb_size); modified = TRUE; } if (modified || !gst_d3d11_decoder_is_configured (self->d3d11_decoder)) { GstVideoInfo info; self->out_format = GST_VIDEO_FORMAT_UNKNOWN; if (self->bitdepth == 8) { if (self->chroma_format_idc == 1) self->out_format = GST_VIDEO_FORMAT_NV12; else { GST_FIXME_OBJECT (self, "Could not support 8bits non-4:2:0 format"); } } if (self->out_format == GST_VIDEO_FORMAT_UNKNOWN) { GST_ERROR_OBJECT (self, "Could not support bitdepth/chroma format"); return FALSE; } 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; /* Store configured DPB size here. Then, it will be referenced later * to decide whether we need to re-open decoder object or not. * For instance, if every configuration is same apart from DPB size and * new DPB size is decreased, we can reuse existing decoder object. */ self->max_dpb_size = max_dpb_size; if (!gst_d3d11_decoder_configure (self->d3d11_decoder, GST_D3D11_CODEC_H264, decoder->input_state, &info, self->coded_width, self->coded_height, /* Additional 4 views margin for zero-copy rendering */ max_dpb_size + 4)) { 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_h264_dec_get_bitstream_buffer (GstD3D11H264Dec * self) { GST_TRACE_OBJECT (self, "Getting bitstream buffer"); 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; if ((self->remaining_buffer_size & 127) != 0) { GST_WARNING_OBJECT (self, "The size of bitstream buffer is not 128 bytes aligned"); self->bad_aligned_bitstream_buffer = TRUE; } else { self->bad_aligned_bitstream_buffer = FALSE; } return TRUE; } static ID3D11VideoDecoderOutputView * gst_d3d11_h264_dec_get_output_view_from_picture (GstD3D11H264Dec * self, GstH264Picture * picture, guint8 * view_id) { GstBuffer *view_buffer; ID3D11VideoDecoderOutputView *view; view_buffer = (GstBuffer *) gst_h264_picture_get_user_data (picture); if (!view_buffer) { GST_DEBUG_OBJECT (self, "current picture does not have output view buffer"); return NULL; } view = gst_d3d11_decoder_get_output_view_from_buffer (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 gboolean gst_d3d11_h264_dec_start_picture (GstH264Decoder * decoder, GstH264Picture * picture, GstH264Slice * slice, GstH264Dpb * dpb) { GstD3D11H264Dec *self = GST_D3D11_H264_DEC (decoder); ID3D11VideoDecoderOutputView *view; guint8 view_id = 0xff; GArray *dpb_array; GstH264SPS *sps; GstH264PPS *pps; DXVA_PicParams_H264 pic_params = { 0, }; DXVA_Qmatrix_H264 iq_matrix = { 0, }; guint d3d11_buffer_size = 0; gpointer d3d11_buffer = NULL; gint i, j; pps = slice->header.pps; g_assert (pps != NULL); sps = pps->sequence; g_assert (sps != NULL); view = gst_d3d11_h264_dec_get_output_view_from_picture (self, picture, &view_id); if (!view) { GST_ERROR_OBJECT (self, "current picture does not have output view handle"); return 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; } for (i = 0; i < 16; i++) { self->ref_frame_list[i].bPicEntry = 0xFF; self->field_order_cnt_list[i][0] = 0; self->field_order_cnt_list[i][1] = 0; self->frame_num_list[i] = 0; } self->used_for_reference_flags = 0; self->non_existing_frame_flags = 0; dpb_array = gst_h264_dpb_get_pictures_all (dpb); for (i = dpb_array->len - 1, j = 0; i >= 0 && j < 16; i--) { GstH264Picture *other = g_array_index (dpb_array, GstH264Picture *, i); guint8 id = 0xff; if (!GST_H264_PICTURE_IS_REF (other)) continue; /* The second field picture will be handled differently */ if (other->second_field) continue; gst_d3d11_h264_dec_get_output_view_from_picture (self, other, &id); self->ref_frame_list[j].Index7Bits = id; if (GST_H264_PICTURE_IS_LONG_TERM_REF (other)) { self->ref_frame_list[j].AssociatedFlag = 1; self->frame_num_list[j] = other->long_term_frame_idx; } else { self->ref_frame_list[j].AssociatedFlag = 0; self->frame_num_list[j] = other->frame_num; } switch (other->field) { case GST_H264_PICTURE_FIELD_TOP_FIELD: self->field_order_cnt_list[j][0] = other->top_field_order_cnt; self->used_for_reference_flags |= 0x1 << (2 * j); break; case GST_H264_PICTURE_FIELD_BOTTOM_FIELD: self->field_order_cnt_list[j][1] = other->bottom_field_order_cnt; self->used_for_reference_flags |= 0x1 << (2 * j + 1); break; default: self->field_order_cnt_list[j][0] = other->top_field_order_cnt; self->field_order_cnt_list[j][1] = other->bottom_field_order_cnt; self->used_for_reference_flags |= 0x3 << (2 * j); break; } if (other->other_field) { GstH264Picture *other_field = other->other_field; switch (other_field->field) { case GST_H264_PICTURE_FIELD_TOP_FIELD: self->field_order_cnt_list[j][0] = other_field->top_field_order_cnt; self->used_for_reference_flags |= 0x1 << (2 * j); break; case GST_H264_PICTURE_FIELD_BOTTOM_FIELD: self->field_order_cnt_list[j][1] = other_field->bottom_field_order_cnt; self->used_for_reference_flags |= 0x1 << (2 * j + 1); break; default: break; } } self->non_existing_frame_flags |= (other->nonexisting) << j; j++; } gst_d3d11_h264_dec_fill_picture_params (self, &slice->header, &pic_params); pic_params.CurrPic.Index7Bits = view_id; pic_params.RefPicFlag = GST_H264_PICTURE_IS_REF (picture); pic_params.frame_num = picture->frame_num; if (picture->field == GST_H264_PICTURE_FIELD_TOP_FIELD) { pic_params.CurrFieldOrderCnt[0] = picture->top_field_order_cnt; pic_params.CurrFieldOrderCnt[1] = 0; } else if (picture->field == GST_H264_PICTURE_FIELD_BOTTOM_FIELD) { pic_params.CurrFieldOrderCnt[0] = 0; pic_params.CurrFieldOrderCnt[1] = picture->bottom_field_order_cnt; } else { pic_params.CurrFieldOrderCnt[0] = picture->top_field_order_cnt; pic_params.CurrFieldOrderCnt[1] = picture->bottom_field_order_cnt; } memcpy (pic_params.RefFrameList, self->ref_frame_list, sizeof (pic_params.RefFrameList)); memcpy (pic_params.FieldOrderCntList, self->field_order_cnt_list, sizeof (pic_params.FieldOrderCntList)); memcpy (pic_params.FrameNumList, self->frame_num_list, sizeof (pic_params.FrameNumList)); pic_params.UsedForReferenceFlags = self->used_for_reference_flags; pic_params.NonExistingFrameFlags = self->non_existing_frame_flags; 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 (DXVA_PicParams_H264)); 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; } if (pps->pic_scaling_matrix_present_flag) { for (i = 0; i < 6; i++) { for (j = 0; j < 16; j++) { iq_matrix.bScalingLists4x4[i][j] = pps->scaling_lists_4x4[i][j]; } } for (i = 0; i < 2; i++) { for (j = 0; j < 64; j++) { iq_matrix.bScalingLists8x8[i][j] = pps->scaling_lists_8x8[i][j]; } } } else { for (i = 0; i < 6; i++) { for (j = 0; j < 16; j++) { iq_matrix.bScalingLists4x4[i][j] = sps->scaling_lists_4x4[i][j]; } } for (i = 0; i < 2; i++) { for (j = 0; j < 64; j++) { iq_matrix.bScalingLists8x8[i][j] = sps->scaling_lists_8x8[i][j]; } } } 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_Qmatrix_H264)); 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; } g_array_unref (dpb_array); g_array_set_size (self->slice_list, 0); return gst_d3d11_h264_dec_get_bitstream_buffer (self); } static gboolean gst_d3d11_h264_dec_new_picture (GstH264Decoder * decoder, GstVideoCodecFrame * frame, GstH264Picture * picture) { GstD3D11H264Dec *self = GST_D3D11_H264_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_DEBUG_OBJECT (self, "No available output view buffer"); return FALSE; } GST_LOG_OBJECT (self, "New output view buffer %" GST_PTR_FORMAT, view_buffer); gst_h264_picture_set_user_data (picture, view_buffer, (GDestroyNotify) gst_buffer_unref); GST_LOG_OBJECT (self, "New h264picture %p", picture); return TRUE; } static gboolean gst_d3d11_h264_dec_new_field_picture (GstH264Decoder * decoder, const GstH264Picture * first_field, GstH264Picture * second_field) { GstD3D11H264Dec *self = GST_D3D11_H264_DEC (decoder); GstBuffer *view_buffer; view_buffer = (GstBuffer *) gst_h264_picture_get_user_data ((GstH264Picture *) first_field); if (!view_buffer) { GST_WARNING_OBJECT (self, "First picture does not have output view buffer"); return TRUE; } GST_LOG_OBJECT (self, "New field picture with buffer %" GST_PTR_FORMAT, view_buffer); gst_h264_picture_set_user_data (second_field, gst_buffer_ref (view_buffer), (GDestroyNotify) gst_buffer_unref); return TRUE; } static GstFlowReturn gst_d3d11_h264_dec_output_picture (GstH264Decoder * decoder, GstVideoCodecFrame * frame, GstH264Picture * picture) { GstD3D11H264Dec *self = GST_D3D11_H264_DEC (decoder); GstVideoDecoder *vdec = GST_VIDEO_DECODER (decoder); GstBuffer *view_buffer; GST_LOG_OBJECT (self, "Outputting picture %p (poc %d)", picture, picture->pic_order_cnt); view_buffer = (GstBuffer *) gst_h264_picture_get_user_data (picture); if (!view_buffer) { GST_ERROR_OBJECT (self, "Could not get output view"); goto error; } if (!gst_d3d11_decoder_process_output (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_h264_picture_unref (picture); return gst_video_decoder_finish_frame (vdec, frame); error: gst_video_decoder_drop_frame (vdec, frame); gst_h264_picture_unref (picture); return GST_FLOW_ERROR; } static gboolean gst_d3d11_h264_dec_submit_slice_data (GstD3D11H264Dec * self) { guint buffer_size; gpointer buffer; guint8 *data; gsize offset = 0; guint i; D3D11_VIDEO_DECODER_BUFFER_DESC buffer_desc[4]; gboolean ret; DXVA_Slice_H264_Short *slice_data; if (self->slice_list->len < 1) { GST_WARNING_OBJECT (self, "Nothing to submit"); return FALSE; } memset (buffer_desc, 0, sizeof (buffer_desc)); slice_data = &g_array_index (self->slice_list, DXVA_Slice_H264_Short, self->slice_list->len - 1); /* DXVA2 spec is saying that written bitstream data must be 128 bytes * aligned if the bitstream buffer contains end of slice * (i.e., wBadSliceChopping == 0 or 2) */ if (slice_data->wBadSliceChopping == 0 || slice_data->wBadSliceChopping == 2) { guint padding = MIN (GST_ROUND_UP_128 (self->written_buffer_size) - self->written_buffer_size, self->remaining_buffer_size); if (padding) { GST_TRACE_OBJECT (self, "Written bitstream buffer size %u is not 128 bytes aligned, " "add padding %u bytes", self->written_buffer_size, padding); memset (self->bitstream_buffer_data, 0, padding); self->written_buffer_size += padding; slice_data->SliceBytesInBuffer += padding; } } 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++) { DXVA_Slice_H264_Short *slice_data = &g_array_index (self->slice_list, DXVA_Slice_H264_Short, i); memcpy (data + offset, slice_data, sizeof (DXVA_Slice_H264_Short)); offset += sizeof (DXVA_Slice_H264_Short); } 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[0].BufferType = D3D11_VIDEO_DECODER_BUFFER_PICTURE_PARAMETERS; buffer_desc[0].DataOffset = 0; buffer_desc[0].DataSize = sizeof (DXVA_PicParams_H264); buffer_desc[1].BufferType = D3D11_VIDEO_DECODER_BUFFER_INVERSE_QUANTIZATION_MATRIX; buffer_desc[1].DataOffset = 0; buffer_desc[1].DataSize = sizeof (DXVA_Qmatrix_H264); buffer_desc[2].BufferType = D3D11_VIDEO_DECODER_BUFFER_SLICE_CONTROL; buffer_desc[2].DataOffset = 0; buffer_desc[2].DataSize = sizeof (DXVA_Slice_H264_Short) * self->slice_list->len; if (!self->bad_aligned_bitstream_buffer && (self->written_buffer_size & 127) != 0) { GST_WARNING_OBJECT (self, "Written bitstream buffer size %u is not 128 bytes aligned", self->written_buffer_size); } buffer_desc[3].BufferType = D3D11_VIDEO_DECODER_BUFFER_BITSTREAM; buffer_desc[3].DataOffset = 0; buffer_desc[3].DataSize = self->written_buffer_size; ret = gst_d3d11_decoder_submit_decoder_buffers (self->d3d11_decoder, 4, 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_h264_dec_end_picture (GstH264Decoder * decoder, GstH264Picture * picture) { GstD3D11H264Dec *self = GST_D3D11_H264_DEC (decoder); GST_LOG_OBJECT (self, "end picture %p, (poc %d)", picture, picture->pic_order_cnt); if (!gst_d3d11_h264_dec_submit_slice_data (self)) { 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; } static void gst_d3d11_h264_dec_picture_params_from_sps (GstD3D11H264Dec * self, const GstH264SPS * sps, gboolean field_pic, DXVA_PicParams_H264 * params) { #define COPY_FIELD(f) \ (params)->f = (sps)->f params->wFrameWidthInMbsMinus1 = sps->pic_width_in_mbs_minus1; if (!sps->frame_mbs_only_flag) { params->wFrameHeightInMbsMinus1 = ((sps->pic_height_in_map_units_minus1 + 1) << 1) - 1; } else { params->wFrameHeightInMbsMinus1 = sps->pic_height_in_map_units_minus1; } params->residual_colour_transform_flag = sps->separate_colour_plane_flag; params->MbaffFrameFlag = (sps->mb_adaptive_frame_field_flag && !field_pic); params->field_pic_flag = field_pic; params->MinLumaBipredSize8x8Flag = sps->level_idc >= 31; COPY_FIELD (num_ref_frames); COPY_FIELD (chroma_format_idc); COPY_FIELD (frame_mbs_only_flag); COPY_FIELD (bit_depth_luma_minus8); COPY_FIELD (bit_depth_chroma_minus8); COPY_FIELD (log2_max_frame_num_minus4); COPY_FIELD (pic_order_cnt_type); COPY_FIELD (log2_max_pic_order_cnt_lsb_minus4); COPY_FIELD (delta_pic_order_always_zero_flag); COPY_FIELD (direct_8x8_inference_flag); #undef COPY_FIELD } static void gst_d3d11_h264_dec_picture_params_from_pps (GstD3D11H264Dec * self, const GstH264PPS * pps, DXVA_PicParams_H264 * params) { #define COPY_FIELD(f) \ (params)->f = (pps)->f COPY_FIELD (constrained_intra_pred_flag); COPY_FIELD (weighted_pred_flag); COPY_FIELD (weighted_bipred_idc); COPY_FIELD (transform_8x8_mode_flag); COPY_FIELD (pic_init_qs_minus26); COPY_FIELD (chroma_qp_index_offset); COPY_FIELD (second_chroma_qp_index_offset); COPY_FIELD (pic_init_qp_minus26); COPY_FIELD (num_ref_idx_l0_active_minus1); COPY_FIELD (num_ref_idx_l1_active_minus1); COPY_FIELD (entropy_coding_mode_flag); COPY_FIELD (pic_order_present_flag); COPY_FIELD (deblocking_filter_control_present_flag); COPY_FIELD (redundant_pic_cnt_present_flag); COPY_FIELD (num_slice_groups_minus1); COPY_FIELD (slice_group_map_type); #undef COPY_FIELD } static void gst_d3d11_h264_dec_picture_params_from_slice_header (GstD3D11H264Dec * self, const GstH264SliceHdr * slice_header, DXVA_PicParams_H264 * params) { params->sp_for_switch_flag = slice_header->sp_for_switch_flag; params->field_pic_flag = slice_header->field_pic_flag; params->CurrPic.AssociatedFlag = slice_header->bottom_field_flag; params->IntraPicFlag = GST_H264_IS_I_SLICE (slice_header) || GST_H264_IS_SI_SLICE (slice_header); } static gboolean gst_d3d11_h264_dec_fill_picture_params (GstD3D11H264Dec * self, const GstH264SliceHdr * slice_header, DXVA_PicParams_H264 * params) { const GstH264SPS *sps; const GstH264PPS *pps; g_return_val_if_fail (slice_header->pps != NULL, FALSE); g_return_val_if_fail (slice_header->pps->sequence != NULL, FALSE); pps = slice_header->pps; sps = pps->sequence; memset (params, 0, sizeof (DXVA_PicParams_H264)); params->MbsConsecutiveFlag = 1; params->Reserved16Bits = 3; params->ContinuationFlag = 1; params->Reserved8BitsA = 0; params->Reserved8BitsB = 0; params->StatusReportFeedbackNumber = 1; gst_d3d11_h264_dec_picture_params_from_sps (self, sps, slice_header->field_pic_flag, params); gst_d3d11_h264_dec_picture_params_from_pps (self, pps, params); gst_d3d11_h264_dec_picture_params_from_slice_header (self, slice_header, params); return TRUE; } static gboolean gst_d3d11_h264_dec_decode_slice (GstH264Decoder * decoder, GstH264Picture * picture, GstH264Slice * slice, GArray * ref_pic_list0, GArray * ref_pic_list1) { GstD3D11H264Dec *self = GST_D3D11_H264_DEC (decoder); { guint to_write = slice->nalu.size + 3; gboolean is_first = TRUE; while (to_write > 0) { guint bytes_to_copy; gboolean is_last = TRUE; DXVA_Slice_H264_Short slice_short = { 0, }; if (self->remaining_buffer_size < to_write && self->slice_list->len > 0) { if (!gst_d3d11_h264_dec_submit_slice_data (self)) { GST_ERROR_OBJECT (self, "Failed to submit bitstream buffers"); return FALSE; } if (!gst_d3d11_h264_dec_get_bitstream_buffer (self)) { GST_ERROR_OBJECT (self, "Failed to get bitstream buffer"); return FALSE; } } /* remaining_buffer_size: the size of remaining d3d11 decoder * bitstream memory allowed to write more * written_buffer_size: the size of written bytes to this d3d11 decoder * bitstream memory * bytes_to_copy: the size of which we would write to d3d11 decoder * bitstream memory in this loop */ bytes_to_copy = to_write; if (bytes_to_copy > self->remaining_buffer_size) { /* if the size of this slice is larger than the size of remaining d3d11 * decoder bitstream memory, write the data up to the remaining d3d11 * decoder bitstream memory size and the rest would be written to the * next d3d11 bitstream memory */ bytes_to_copy = self->remaining_buffer_size; is_last = FALSE; } if (bytes_to_copy >= 3 && is_first) { /* normal case */ self->bitstream_buffer_data[0] = 0; self->bitstream_buffer_data[1] = 0; self->bitstream_buffer_data[2] = 1; memcpy (self->bitstream_buffer_data + 3, slice->nalu.data + slice->nalu.offset, bytes_to_copy - 3); } else { /* when this nal unit date is splitted into two buffer */ memcpy (self->bitstream_buffer_data, slice->nalu.data + slice->nalu.offset, bytes_to_copy); } /* For wBadSliceChopping value 0 or 1, BSNALunitDataLocation means * the offset of the first start code of this slice in this d3d11 * memory buffer. * 1) If this is the first slice of picture, it should be zero * since we write start code at offset 0 (written size before this * slice also must be zero). * 2) If this is not the first slice of picture but this is the first * d3d11 bitstream buffer (meaning that one bitstream buffer contains * multiple slices), then this is the written size of buffer * excluding this loop. * And for wBadSliceChopping value 2 or 3, this should be zero by spec */ if (is_first) slice_short.BSNALunitDataLocation = self->written_buffer_size; else slice_short.BSNALunitDataLocation = 0; slice_short.SliceBytesInBuffer = bytes_to_copy; /* wBadSliceChopping: (dxva h264 spec.) * 0: All bits for the slice are located within the corresponding * bitstream data buffer * 1: The bitstream data buffer contains the start of the slice, * but not the entire slice, because the buffer is full * 2: The bitstream data buffer contains the end of the slice. * It does not contain the start of the slice, because the start of * the slice was located in the previous bitstream data buffer. * 3: The bitstream data buffer does not contain the start of the slice * (because the start of the slice was located in the previous * bitstream data buffer), and it does not contain the end of the slice * (because the current bitstream data buffer is also full). */ if (is_last && is_first) { slice_short.wBadSliceChopping = 0; } else if (!is_last && is_first) { slice_short.wBadSliceChopping = 1; } else if (is_last && !is_first) { slice_short.wBadSliceChopping = 2; } else { slice_short.wBadSliceChopping = 3; } g_array_append_val (self->slice_list, slice_short); self->remaining_buffer_size -= bytes_to_copy; self->written_buffer_size += bytes_to_copy; self->bitstream_buffer_data += bytes_to_copy; is_first = FALSE; to_write -= bytes_to_copy; } } return TRUE; } typedef struct { guint width; guint height; } GstD3D11H264DecResolution; void gst_d3d11_h264_dec_register (GstPlugin * plugin, GstD3D11Device * device, GstD3D11Decoder * decoder, guint rank, gboolean legacy) { GType type; gchar *type_name; gchar *feature_name; guint index = 0; guint i; gboolean ret; GTypeInfo type_info = { sizeof (GstD3D11H264DecClass), NULL, NULL, (GClassInitFunc) gst_d3d11_h264_dec_class_init, NULL, NULL, sizeof (GstD3D11H264Dec), 0, (GInstanceInitFunc) gst_d3d11_h264_dec_init, }; const GUID *supported_profile = NULL; /* values were taken from chromium. See supported_profile_helper.cc */ GstD3D11H264DecResolution resolutions_to_check[] = { {1920, 1088}, {2560, 1440}, {3840, 2160}, {4096, 2160}, {4096, 2304} }; GstCaps *sink_caps = NULL; GstCaps *src_caps = NULL; guint max_width = 0; guint max_height = 0; guint resolution; ret = gst_d3d11_decoder_get_supported_decoder_profile (decoder, GST_D3D11_CODEC_H264, GST_VIDEO_FORMAT_NV12, &supported_profile); if (!ret) { GST_WARNING_OBJECT (device, "decoder profile unavailable"); return; } ret = gst_d3d11_decoder_supports_format (decoder, supported_profile, DXGI_FORMAT_NV12); if (!ret) { GST_FIXME_OBJECT (device, "device does not support NV12 format"); return; } /* we will not check the maximum resolution for legacy devices. * it might cause crash */ if (legacy) { max_width = resolutions_to_check[0].width; max_height = resolutions_to_check[0].height; } else { for (i = 0; i < G_N_ELEMENTS (resolutions_to_check); i++) { if (gst_d3d11_decoder_supports_resolution (decoder, supported_profile, DXGI_FORMAT_NV12, resolutions_to_check[i].width, resolutions_to_check[i].height)) { max_width = resolutions_to_check[i].width; max_height = resolutions_to_check[i].height; GST_DEBUG_OBJECT (device, "device support resolution %dx%d", max_width, max_height); } else { break; } } } if (max_width == 0 || max_height == 0) { GST_WARNING_OBJECT (device, "Couldn't query supported resolution"); return; } sink_caps = gst_caps_from_string ("video/x-h264, " "stream-format= (string) { avc, avc3, byte-stream }, " "alignment= (string) au, " "profile = (string) { high, progressive-high, constrained-high, main, constrained-baseline, baseline }"); src_caps = gst_caps_from_string ("video/x-raw(" GST_CAPS_FEATURE_MEMORY_D3D11_MEMORY "), format = (string) NV12; " "video/x-raw, format = (string) NV12"); /* To cover both landscape and portrait, select max value */ resolution = MAX (max_width, max_height); gst_caps_set_simple (sink_caps, "width", GST_TYPE_INT_RANGE, 1, resolution, "height", GST_TYPE_INT_RANGE, 1, resolution, NULL); gst_caps_set_simple (src_caps, "width", GST_TYPE_INT_RANGE, 1, resolution, "height", GST_TYPE_INT_RANGE, 1, resolution, NULL); type_info.class_data = gst_d3d11_decoder_class_data_new (device, sink_caps, src_caps); type_name = g_strdup ("GstD3D11H264Dec"); feature_name = g_strdup ("d3d11h264dec"); while (g_type_from_name (type_name)) { index++; g_free (type_name); g_free (feature_name); type_name = g_strdup_printf ("GstD3D11H264Device%dDec", index); feature_name = g_strdup_printf ("d3d11h264device%ddec", index); } type = g_type_register_static (GST_TYPE_H264_DECODER, type_name, &type_info, (GTypeFlags) 0); /* make lower rank than default device */ if (rank > 0 && index != 0) rank--; if (!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); }