/* GStreamer * Copyright (C) 2020 Nicolas Dufresne * Copyright (C) 2020 Safran Passenger Innovations LLC * * 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 #endif #include "gstv4l2codecallocator.h" #include "gstv4l2codech265dec.h" #include "gstv4l2codecpool.h" #include "gstv4l2format.h" #include "linux/v4l2-controls.h" #define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c)) #define V4L2_MIN_KERNEL_VER_MAJOR 5 #define V4L2_MIN_KERNEL_VER_MINOR 20 #define V4L2_MIN_KERNEL_VERSION KERNEL_VERSION(V4L2_MIN_KERNEL_VER_MAJOR, V4L2_MIN_KERNEL_VER_MINOR, 0) GST_DEBUG_CATEGORY_STATIC (v4l2_h265dec_debug); #define GST_CAT_DEFAULT v4l2_h265dec_debug enum { PROP_0, PROP_LAST = PROP_0 }; static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE (GST_VIDEO_DECODER_SINK_NAME, GST_PAD_SINK, GST_PAD_ALWAYS, GST_STATIC_CAPS ("video/x-h265, " "stream-format=(string) { hvc1, hev1, byte-stream }, " "alignment=(string) au") ); static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE (GST_VIDEO_DECODER_SRC_NAME, GST_PAD_SRC, GST_PAD_ALWAYS, GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE (GST_V4L2_DEFAULT_VIDEO_FORMATS))); struct _GstV4l2CodecH265Dec { GstH265Decoder parent; GstV4l2Decoder *decoder; GstVideoCodecState *output_state; GstVideoInfo vinfo; gint display_width; gint display_height; gint coded_width; gint coded_height; guint bitdepth; guint chroma_format_idc; guint num_slices; gboolean first_slice; GstV4l2CodecAllocator *sink_allocator; GstV4l2CodecAllocator *src_allocator; GstV4l2CodecPool *src_pool; gint min_pool_size; gboolean has_videometa; gboolean streaming; gboolean copy_frames; gboolean need_sequence; struct v4l2_ctrl_hevc_sps sps; struct v4l2_ctrl_hevc_pps pps; struct v4l2_ctrl_hevc_scaling_matrix scaling_matrix; struct v4l2_ctrl_hevc_decode_params decode_params; GArray *slice_params; GArray *entry_point_offsets; enum v4l2_stateless_hevc_decode_mode decode_mode; enum v4l2_stateless_hevc_start_code start_code; GstMemory *bitstream; GstMapInfo bitstream_map; gboolean support_scaling_matrix; gboolean support_slice_parameters; gboolean support_entry_point_offsets; GstVideoConverter *convert; gboolean need_crop; gint crop_rect_width, crop_rect_height; gint crop_rect_x, crop_rect_y; }; G_DEFINE_ABSTRACT_TYPE (GstV4l2CodecH265Dec, gst_v4l2_codec_h265_dec, GST_TYPE_H265_DECODER); #define parent_class gst_v4l2_codec_h265_dec_parent_class static gboolean is_frame_based (GstV4l2CodecH265Dec * self) { return (self->decode_mode == V4L2_STATELESS_HEVC_DECODE_MODE_FRAME_BASED) && !self->support_slice_parameters; } static gboolean is_slice_based (GstV4l2CodecH265Dec * self) { return self->decode_mode == V4L2_STATELESS_HEVC_DECODE_MODE_SLICE_BASED; } static gboolean is_frame_based_with_slices (GstV4l2CodecH265Dec * self) { return (self->decode_mode == V4L2_STATELESS_HEVC_DECODE_MODE_FRAME_BASED) && self->support_slice_parameters; } static gboolean needs_start_codes (GstV4l2CodecH265Dec * self) { return self->start_code == V4L2_STATELESS_HEVC_START_CODE_ANNEX_B; } static gboolean gst_v4l2_decoder_h265_api_check (GstV4l2Decoder * decoder) { guint i, ret_size; /* *INDENT-OFF* */ #define SET_ID(cid) .id = (cid), .name = #cid struct { const gchar *name; unsigned int id; unsigned int size; gboolean optional; } controls[] = { { SET_ID (V4L2_CID_STATELESS_HEVC_SPS), .size = sizeof(struct v4l2_ctrl_hevc_sps), }, { SET_ID (V4L2_CID_STATELESS_HEVC_PPS), .size = sizeof(struct v4l2_ctrl_hevc_pps), }, { SET_ID (V4L2_CID_STATELESS_HEVC_SCALING_MATRIX), .size = sizeof(struct v4l2_ctrl_hevc_scaling_matrix), .optional = TRUE, }, { SET_ID (V4L2_CID_STATELESS_HEVC_DECODE_PARAMS), .size = sizeof(struct v4l2_ctrl_hevc_decode_params), }, { SET_ID (V4L2_CID_STATELESS_HEVC_SLICE_PARAMS), .size = sizeof(struct v4l2_ctrl_hevc_slice_params), .optional = TRUE, } }; #undef SET_ID /* *INDENT-ON* */ /* * Compatibility check: make sure the pointer controls are * the right size. */ for (i = 0; i < G_N_ELEMENTS (controls); i++) { gboolean control_found; control_found = gst_v4l2_decoder_query_control_size (decoder, controls[i].id, &ret_size); if (!controls[i].optional && !control_found) { GST_WARNING ("Driver is missing %s support.", controls[i].name); return FALSE; } if (control_found && ret_size != controls[i].size) { GST_WARNING ("%s control size mismatch: got %d bytes but %d expected.", controls[i].name, ret_size, controls[i].size); return FALSE; } } return TRUE; } static gboolean gst_v4l2_codec_h265_dec_open (GstVideoDecoder * decoder) { GstV4l2CodecH265Dec *self = GST_V4L2_CODEC_H265_DEC (decoder); /* *INDENT-OFF* */ struct v4l2_ext_control control[] = { { .id = V4L2_CID_STATELESS_HEVC_DECODE_MODE, }, { .id = V4L2_CID_STATELESS_HEVC_START_CODE, }, }; struct v4l2_ext_control scaling_matrix[] = { { .id = V4L2_CID_STATELESS_HEVC_SCALING_MATRIX, .ptr = &self->scaling_matrix, .size = sizeof (self->scaling_matrix), }, }; /* *INDENT-ON* */ if (!gst_v4l2_decoder_open (self->decoder)) { GST_ELEMENT_ERROR (self, RESOURCE, OPEN_READ_WRITE, ("Failed to open H265 decoder"), ("gst_v4l2_decoder_open() failed: %s", g_strerror (errno))); return FALSE; } if (!gst_v4l2_decoder_get_controls (self->decoder, control, G_N_ELEMENTS (control))) { GST_ELEMENT_ERROR (self, RESOURCE, OPEN_READ_WRITE, ("Driver did not report framing and start code method."), ("gst_v4l2_decoder_get_controls() failed: %s", g_strerror (errno))); return FALSE; } self->support_scaling_matrix = gst_v4l2_decoder_get_controls (self->decoder, scaling_matrix, G_N_ELEMENTS (scaling_matrix)); self->support_slice_parameters = gst_v4l2_decoder_query_control_size (self->decoder, V4L2_CID_STATELESS_HEVC_SLICE_PARAMS, NULL); self->support_entry_point_offsets = gst_v4l2_decoder_query_control_size (self->decoder, V4L2_CID_STATELESS_HEVC_ENTRY_POINT_OFFSETS, NULL); self->decode_mode = control[0].value; self->start_code = control[1].value; GST_INFO_OBJECT (self, "Opened H265 %s decoder %s", is_frame_based (self) ? "frame based" : is_slice_based (self) ? "slice based" : "frame based with slices", needs_start_codes (self) ? "using start-codes" : "without start-codes"); gst_h265_decoder_set_process_ref_pic_lists (GST_H265_DECODER (self), is_slice_based (self) || is_frame_based_with_slices (self)); return TRUE; } static gboolean gst_v4l2_codec_h265_dec_close (GstVideoDecoder * decoder) { GstV4l2CodecH265Dec *self = GST_V4L2_CODEC_H265_DEC (decoder); gst_v4l2_decoder_close (self->decoder); return TRUE; } static void gst_v4l2_codec_h265_dec_streamoff (GstV4l2CodecH265Dec * self) { if (self->streaming) { gst_v4l2_decoder_streamoff (self->decoder, GST_PAD_SINK); gst_v4l2_decoder_streamoff (self->decoder, GST_PAD_SRC); self->streaming = FALSE; } } static void gst_v4l2_codec_h265_dec_reset_allocation (GstV4l2CodecH265Dec * self) { if (self->sink_allocator) { gst_v4l2_codec_allocator_detach (self->sink_allocator); g_clear_object (&self->sink_allocator); } if (self->src_allocator) { gst_v4l2_codec_allocator_detach (self->src_allocator); g_clear_object (&self->src_allocator); g_clear_object (&self->src_pool); } } static gboolean gst_v4l2_codec_h265_dec_stop (GstVideoDecoder * decoder) { GstV4l2CodecH265Dec *self = GST_V4L2_CODEC_H265_DEC (decoder); gst_v4l2_codec_h265_dec_streamoff (self); gst_v4l2_codec_h265_dec_reset_allocation (self); if (self->output_state) gst_video_codec_state_unref (self->output_state); self->output_state = NULL; return GST_VIDEO_DECODER_CLASS (parent_class)->stop (decoder); } static gint get_pixel_bitdepth (GstV4l2CodecH265Dec * self) { gint depth; switch (self->chroma_format_idc) { case 0: /* 4:0:0 */ depth = self->bitdepth; break; case 1: /* 4:2:0 */ depth = self->bitdepth + self->bitdepth / 2; break; case 2: /* 4:2:2 */ depth = 2 * self->bitdepth; break; case 3: /* 4:4:4 */ depth = 3 * self->bitdepth; break; default: GST_WARNING_OBJECT (self, "Unsupported chroma format %i", self->chroma_format_idc); depth = 0; break; } return depth; } static gboolean gst_v4l2_codec_h265_dec_negotiate (GstVideoDecoder * decoder) { GstV4l2CodecH265Dec *self = GST_V4L2_CODEC_H265_DEC (decoder); GstH265Decoder *h265dec = GST_H265_DECODER (decoder); /* *INDENT-OFF* */ struct v4l2_ext_control control[] = { { .id = V4L2_CID_STATELESS_HEVC_SPS, .ptr = &self->sps, .size = sizeof (self->sps), }, }; /* *INDENT-ON* */ GstCaps *filter, *caps; /* Ignore downstream renegotiation request. */ if (self->streaming) goto done; GST_DEBUG_OBJECT (self, "Negotiate"); gst_v4l2_codec_h265_dec_reset_allocation (self); if (!gst_v4l2_decoder_set_sink_fmt (self->decoder, V4L2_PIX_FMT_HEVC_SLICE, self->coded_width, self->coded_height, get_pixel_bitdepth (self))) { GST_ELEMENT_ERROR (self, CORE, NEGOTIATION, ("Failed to configure H265 decoder"), ("gst_v4l2_decoder_set_sink_fmt() failed: %s", g_strerror (errno))); gst_v4l2_decoder_close (self->decoder); return FALSE; } if (!gst_v4l2_decoder_set_controls (self->decoder, NULL, control, G_N_ELEMENTS (control))) { GST_ELEMENT_ERROR (decoder, RESOURCE, WRITE, ("Driver does not support the selected stream."), (NULL)); return FALSE; } filter = gst_v4l2_decoder_enum_src_formats (self->decoder); if (!filter) { GST_ELEMENT_ERROR (self, CORE, NEGOTIATION, ("No supported decoder output formats"), (NULL)); return FALSE; } GST_DEBUG_OBJECT (self, "Supported output formats: %" GST_PTR_FORMAT, filter); caps = gst_pad_peer_query_caps (decoder->srcpad, filter); gst_caps_unref (filter); GST_DEBUG_OBJECT (self, "Peer supported formats: %" GST_PTR_FORMAT, caps); if (!gst_v4l2_decoder_select_src_format (self->decoder, caps, &self->vinfo)) { GST_ELEMENT_ERROR (self, CORE, NEGOTIATION, ("Unsupported bitdepth/chroma format"), ("No support for %ux%u %ubit chroma IDC %i", self->coded_width, self->coded_height, self->bitdepth, self->chroma_format_idc)); gst_caps_unref (caps); return FALSE; } gst_caps_unref (caps); done: if (self->output_state) gst_video_codec_state_unref (self->output_state); self->output_state = gst_video_decoder_set_output_state (GST_VIDEO_DECODER (self), self->vinfo.finfo->format, self->display_width, self->display_height, h265dec->input_state); self->output_state->caps = gst_video_info_to_caps (&self->output_state->info); if (GST_VIDEO_DECODER_CLASS (parent_class)->negotiate (decoder)) { if (self->streaming) return TRUE; if (!gst_v4l2_decoder_streamon (self->decoder, GST_PAD_SINK)) { GST_ELEMENT_ERROR (self, RESOURCE, FAILED, ("Could not enable the decoder driver."), ("VIDIOC_STREAMON(SINK) failed: %s", g_strerror (errno))); return FALSE; } if (!gst_v4l2_decoder_streamon (self->decoder, GST_PAD_SRC)) { GST_ELEMENT_ERROR (self, RESOURCE, FAILED, ("Could not enable the decoder driver."), ("VIDIOC_STREAMON(SRC) failed: %s", g_strerror (errno))); return FALSE; } self->streaming = TRUE; return TRUE; } return FALSE; } static gboolean gst_v4l2_codec_h265_dec_decide_allocation (GstVideoDecoder * decoder, GstQuery * query) { GstV4l2CodecH265Dec *self = GST_V4L2_CODEC_H265_DEC (decoder); guint min = 0; if (self->streaming) goto no_internal_changes; self->has_videometa = gst_query_find_allocation_meta (query, GST_VIDEO_META_API_TYPE, NULL); g_clear_object (&self->src_pool); g_clear_object (&self->src_allocator); if (gst_query_get_n_allocation_pools (query) > 0) gst_query_parse_nth_allocation_pool (query, 0, NULL, NULL, &min, NULL); min = MAX (2, min); self->sink_allocator = gst_v4l2_codec_allocator_new (self->decoder, GST_PAD_SINK, self->min_pool_size + 2); self->src_allocator = gst_v4l2_codec_allocator_new (self->decoder, GST_PAD_SRC, self->min_pool_size + min + 1); self->src_pool = gst_v4l2_codec_pool_new (self->src_allocator, &self->vinfo); no_internal_changes: /* Our buffer pool is internal, we will let the base class create a video * pool, and use it if we are running out of buffers or if downstream does * not support GstVideoMeta */ return GST_VIDEO_DECODER_CLASS (parent_class)->decide_allocation (decoder, query); } static void gst_v4l2_codec_h265_dec_fill_sequence (GstV4l2CodecH265Dec * self, const GstH265SPS * sps) { /* Whenever we update teh sps, we need to send it again */ self->need_sequence = TRUE; /* *INDENT-OFF* */ self->sps = (struct v4l2_ctrl_hevc_sps) { .video_parameter_set_id = sps->vps->id, .seq_parameter_set_id = sps->id, .pic_width_in_luma_samples = sps->pic_width_in_luma_samples, .pic_height_in_luma_samples = sps->pic_height_in_luma_samples, .bit_depth_luma_minus8 = sps->bit_depth_luma_minus8, .bit_depth_chroma_minus8 = sps->bit_depth_chroma_minus8, .log2_max_pic_order_cnt_lsb_minus4 = sps->log2_max_pic_order_cnt_lsb_minus4, .sps_max_dec_pic_buffering_minus1 = sps->max_dec_pic_buffering_minus1[0], .sps_max_num_reorder_pics = sps->max_num_reorder_pics[0], .sps_max_latency_increase_plus1 = sps->max_latency_increase_plus1[0], .log2_min_luma_coding_block_size_minus3 = sps->log2_min_luma_coding_block_size_minus3, .log2_diff_max_min_luma_coding_block_size = sps->log2_diff_max_min_luma_coding_block_size, .log2_min_luma_transform_block_size_minus2 = sps->log2_min_transform_block_size_minus2, .log2_diff_max_min_luma_transform_block_size = sps->log2_diff_max_min_transform_block_size, .max_transform_hierarchy_depth_inter = sps->max_transform_hierarchy_depth_inter, .max_transform_hierarchy_depth_intra = sps->max_transform_hierarchy_depth_intra, .num_short_term_ref_pic_sets = sps->num_short_term_ref_pic_sets, .num_long_term_ref_pics_sps = sps->num_long_term_ref_pics_sps, .chroma_format_idc = sps->chroma_format_idc, .sps_max_sub_layers_minus1 = sps->max_sub_layers_minus1, .flags = (sps->separate_colour_plane_flag ? V4L2_HEVC_SPS_FLAG_SEPARATE_COLOUR_PLANE : 0) | (sps->scaling_list_enabled_flag ? V4L2_HEVC_SPS_FLAG_SCALING_LIST_ENABLED : 0) | (sps->amp_enabled_flag ? V4L2_HEVC_SPS_FLAG_AMP_ENABLED : 0) | (sps->sample_adaptive_offset_enabled_flag ? V4L2_HEVC_SPS_FLAG_SAMPLE_ADAPTIVE_OFFSET : 0) | (sps->long_term_ref_pics_present_flag ? V4L2_HEVC_SPS_FLAG_LONG_TERM_REF_PICS_PRESENT : 0) | (sps->temporal_mvp_enabled_flag ? V4L2_HEVC_SPS_FLAG_SPS_TEMPORAL_MVP_ENABLED : 0) | (sps->strong_intra_smoothing_enabled_flag ? V4L2_HEVC_SPS_FLAG_STRONG_INTRA_SMOOTHING_ENABLED : 0), }; /* *INDENT-ON* */ if (sps->pcm_enabled_flag) { self->sps.pcm_sample_bit_depth_luma_minus1 = sps->pcm_sample_bit_depth_luma_minus1; self->sps.pcm_sample_bit_depth_chroma_minus1 = sps->pcm_sample_bit_depth_chroma_minus1; self->sps.log2_min_pcm_luma_coding_block_size_minus3 = sps->log2_min_pcm_luma_coding_block_size_minus3; self->sps.log2_diff_max_min_pcm_luma_coding_block_size = sps->log2_diff_max_min_pcm_luma_coding_block_size; self->sps.flags |= V4L2_HEVC_SPS_FLAG_PCM_ENABLED | (sps->pcm_loop_filter_disabled_flag ? V4L2_HEVC_SPS_FLAG_PCM_LOOP_FILTER_DISABLED : 0); } } static void gst_v4l2_codec_h265_dec_fill_pps (GstV4l2CodecH265Dec * self, GstH265PPS * pps) { gint i; /* *INDENT-OFF* */ self->pps = (struct v4l2_ctrl_hevc_pps) { .pic_parameter_set_id = pps->id, .num_extra_slice_header_bits = pps->num_extra_slice_header_bits, .num_ref_idx_l0_default_active_minus1 = pps->num_ref_idx_l0_default_active_minus1, .num_ref_idx_l1_default_active_minus1 = pps->num_ref_idx_l1_default_active_minus1, .init_qp_minus26 = pps->init_qp_minus26, .diff_cu_qp_delta_depth = pps->diff_cu_qp_delta_depth, .pps_cb_qp_offset = pps->cb_qp_offset, .pps_cr_qp_offset = pps->cr_qp_offset, .pps_beta_offset_div2 = pps->beta_offset_div2, .pps_tc_offset_div2 = pps->tc_offset_div2, .log2_parallel_merge_level_minus2 = pps->log2_parallel_merge_level_minus2, .flags = (pps->dependent_slice_segments_enabled_flag ? V4L2_HEVC_PPS_FLAG_DEPENDENT_SLICE_SEGMENT_ENABLED : 0) | (pps->output_flag_present_flag ? V4L2_HEVC_PPS_FLAG_OUTPUT_FLAG_PRESENT : 0) | (pps->sign_data_hiding_enabled_flag ? V4L2_HEVC_PPS_FLAG_SIGN_DATA_HIDING_ENABLED : 0) | (pps->cabac_init_present_flag ? V4L2_HEVC_PPS_FLAG_CABAC_INIT_PRESENT : 0) | (pps->constrained_intra_pred_flag ? V4L2_HEVC_PPS_FLAG_CONSTRAINED_INTRA_PRED : 0) | (pps->transform_skip_enabled_flag ? V4L2_HEVC_PPS_FLAG_TRANSFORM_SKIP_ENABLED : 0) | (pps->cu_qp_delta_enabled_flag ? V4L2_HEVC_PPS_FLAG_CU_QP_DELTA_ENABLED : 0) | (pps->slice_chroma_qp_offsets_present_flag ? V4L2_HEVC_PPS_FLAG_PPS_SLICE_CHROMA_QP_OFFSETS_PRESENT : 0) | (pps->weighted_pred_flag ? V4L2_HEVC_PPS_FLAG_WEIGHTED_PRED : 0) | (pps->weighted_bipred_flag ? V4L2_HEVC_PPS_FLAG_WEIGHTED_BIPRED : 0) | (pps->transquant_bypass_enabled_flag ? V4L2_HEVC_PPS_FLAG_TRANSQUANT_BYPASS_ENABLED : 0) | (pps->tiles_enabled_flag ? V4L2_HEVC_PPS_FLAG_TILES_ENABLED : 0) | (pps->entropy_coding_sync_enabled_flag ? V4L2_HEVC_PPS_FLAG_ENTROPY_CODING_SYNC_ENABLED : 0) | (pps->loop_filter_across_tiles_enabled_flag ? V4L2_HEVC_PPS_FLAG_LOOP_FILTER_ACROSS_TILES_ENABLED : 0) | (pps->loop_filter_across_slices_enabled_flag ? V4L2_HEVC_PPS_FLAG_PPS_LOOP_FILTER_ACROSS_SLICES_ENABLED : 0 ) | (pps->deblocking_filter_override_enabled_flag ? V4L2_HEVC_PPS_FLAG_DEBLOCKING_FILTER_OVERRIDE_ENABLED : 0) | (pps->deblocking_filter_disabled_flag ? V4L2_HEVC_PPS_FLAG_PPS_DISABLE_DEBLOCKING_FILTER : 0) | (pps->lists_modification_present_flag ? V4L2_HEVC_PPS_FLAG_LISTS_MODIFICATION_PRESENT : 0) | (pps->slice_segment_header_extension_present_flag ? V4L2_HEVC_PPS_FLAG_SLICE_SEGMENT_HEADER_EXTENSION_PRESENT : 0) | (pps->deblocking_filter_control_present_flag ? V4L2_HEVC_PPS_FLAG_DEBLOCKING_FILTER_CONTROL_PRESENT : 0) | (pps->uniform_spacing_flag ? V4L2_HEVC_PPS_FLAG_UNIFORM_SPACING : 0), }; /* *INDENT-ON* */ if (pps->tiles_enabled_flag) { self->pps.num_tile_columns_minus1 = pps->num_tile_columns_minus1; self->pps.num_tile_rows_minus1 = pps->num_tile_rows_minus1; /* This should not be needed if we use uniform spacing, but Cedrus driver * depends on it for now. As GStreamer parser do set that, lets just pass * the information we have. */ for (i = 0; i <= pps->num_tile_columns_minus1; i++) self->pps.column_width_minus1[i] = pps->column_width_minus1[i]; for (i = 0; i <= pps->num_tile_rows_minus1; i++) self->pps.row_height_minus1[i] = pps->row_height_minus1[i]; } } static void gst_v4l2_codec_h265_dec_fill_scaling_matrix (GstV4l2CodecH265Dec * self, GstH265PPS * pps) { GstH265ScalingList *sl; gint i; if (!pps->sps->scaling_list_enabled_flag) { memset (&self->scaling_matrix, 0, sizeof (self->scaling_matrix)); return; } if (pps->scaling_list_data_present_flag) sl = &pps->scaling_list; else if (pps->sps->scaling_list_data_present_flag) sl = &pps->sps->scaling_list; /* The default scaling list is strored in the pps */ else sl = &pps->scaling_list; for (i = 0; i < G_N_ELEMENTS (sl->scaling_lists_4x4); i++) gst_h265_quant_matrix_4x4_get_raster_from_uprightdiagonal (self->scaling_matrix.scaling_list_4x4[i], sl->scaling_lists_4x4[i]); for (i = 0; i < G_N_ELEMENTS (sl->scaling_lists_8x8); i++) gst_h265_quant_matrix_8x8_get_raster_from_uprightdiagonal (self->scaling_matrix.scaling_list_8x8[i], sl->scaling_lists_8x8[i]); for (i = 0; i < G_N_ELEMENTS (sl->scaling_lists_16x16); i++) gst_h265_quant_matrix_16x16_get_raster_from_uprightdiagonal (self->scaling_matrix.scaling_list_16x16[i], sl->scaling_lists_16x16[i]); for (i = 0; i < G_N_ELEMENTS (sl->scaling_lists_32x32); i++) gst_h265_quant_matrix_32x32_get_raster_from_uprightdiagonal (self->scaling_matrix.scaling_list_32x32[i], sl->scaling_lists_32x32[i]); for (i = 0; i < G_N_ELEMENTS (sl->scaling_list_dc_coef_minus8_16x16); i++) self->scaling_matrix.scaling_list_dc_coef_16x16[i] = sl->scaling_list_dc_coef_minus8_16x16[i] + 8; for (i = 0; i < G_N_ELEMENTS (sl->scaling_list_dc_coef_minus8_32x32); i++) self->scaling_matrix.scaling_list_dc_coef_32x32[i] = sl->scaling_list_dc_coef_minus8_32x32[i] + 8; } static guint get_slice_header_byte_offset (GstH265Slice * slice) { guint epb_count, nal_header_bytes; epb_count = slice->header.n_emulation_prevention_bytes; nal_header_bytes = slice->nalu.header_bytes; return nal_header_bytes + (slice->header.header_size + 7) / 8 - epb_count; } static void gst_v4l2_codec_h265_dec_fill_slice_params (GstV4l2CodecH265Dec * self, GstH265Slice * slice, GstH265Picture * picture) { gint n = self->num_slices++; GstH265SliceHdr *slice_hdr = &slice->header; GstH265PPS *pps = slice_hdr->pps; gsize slice_size = slice->nalu.size; gsize sc_offset = 0; struct v4l2_ctrl_hevc_slice_params *params; gint i, j; gint chroma_weight, chroma_log2_weight_denom; /* TODO adjust this if sps_ext is later supported */ const gint32 WpOffsetHalfRangeC = 1 << 7; /* Ensure array is large enough */ if (self->slice_params->len < self->num_slices) g_array_set_size (self->slice_params, self->slice_params->len * 2); if (needs_start_codes (self)) sc_offset = 3; /* *INDENT-OFF* */ params = &g_array_index (self->slice_params, struct v4l2_ctrl_hevc_slice_params, n); *params = (struct v4l2_ctrl_hevc_slice_params) { .bit_size = (slice_size + sc_offset) * 8, .data_byte_offset = get_slice_header_byte_offset (slice) + sc_offset, .num_entry_point_offsets = slice_hdr->num_entry_point_offsets, .nal_unit_type = slice->nalu.type, .nuh_temporal_id_plus1 = slice->nalu.temporal_id_plus1, .slice_type = slice_hdr->type, .colour_plane_id = slice_hdr->colour_plane_id, .slice_pic_order_cnt = picture->pic_order_cnt, .num_ref_idx_l0_active_minus1 = slice_hdr->num_ref_idx_l0_active_minus1, .num_ref_idx_l1_active_minus1 = slice_hdr->num_ref_idx_l1_active_minus1, .collocated_ref_idx = slice_hdr->collocated_ref_idx, .five_minus_max_num_merge_cand = slice_hdr->five_minus_max_num_merge_cand, .slice_qp_delta = slice_hdr->qp_delta, .slice_cb_qp_offset = slice_hdr->cb_qp_offset, .slice_cr_qp_offset = slice_hdr->cr_qp_offset, .slice_act_y_qp_offset = slice_hdr->slice_act_y_qp_offset, .slice_act_cb_qp_offset = slice_hdr->slice_act_cb_qp_offset, .slice_act_cr_qp_offset = slice_hdr->slice_act_cr_qp_offset, .slice_beta_offset_div2 = slice_hdr->beta_offset_div2, .slice_tc_offset_div2 = slice_hdr->tc_offset_div2, .pic_struct = picture->pic_struct, .slice_segment_addr = slice_hdr->segment_address, .short_term_ref_pic_set_size = slice_hdr->short_term_ref_pic_set_size, .long_term_ref_pic_set_size = slice_hdr->long_term_ref_pic_set_size, .pred_weight_table = (struct v4l2_hevc_pred_weight_table) { .luma_log2_weight_denom = slice_hdr->pred_weight_table.luma_log2_weight_denom, .delta_chroma_log2_weight_denom = slice_hdr->pred_weight_table.delta_chroma_log2_weight_denom, }, .flags = (slice_hdr->sao_luma_flag ? V4L2_HEVC_SLICE_PARAMS_FLAG_SLICE_SAO_LUMA : 0) | (slice_hdr->sao_chroma_flag ? V4L2_HEVC_SLICE_PARAMS_FLAG_SLICE_SAO_CHROMA : 0) | (slice_hdr->temporal_mvp_enabled_flag ? V4L2_HEVC_SLICE_PARAMS_FLAG_SLICE_TEMPORAL_MVP_ENABLED : 0) | (slice_hdr->mvd_l1_zero_flag ? V4L2_HEVC_SLICE_PARAMS_FLAG_MVD_L1_ZERO : 0) | (slice_hdr->cabac_init_flag ? V4L2_HEVC_SLICE_PARAMS_FLAG_CABAC_INIT : 0) | (slice_hdr->collocated_from_l0_flag ? V4L2_HEVC_SLICE_PARAMS_FLAG_COLLOCATED_FROM_L0 : 0) | (slice_hdr->use_integer_mv_flag ? V4L2_HEVC_SLICE_PARAMS_FLAG_USE_INTEGER_MV : 0) | (slice_hdr->deblocking_filter_disabled_flag ? V4L2_HEVC_SLICE_PARAMS_FLAG_SLICE_DEBLOCKING_FILTER_DISABLED : 0) | (slice_hdr->loop_filter_across_slices_enabled_flag ? V4L2_HEVC_SLICE_PARAMS_FLAG_SLICE_LOOP_FILTER_ACROSS_SLICES_ENABLED : 0) | (slice_hdr->dependent_slice_segment_flag ? V4L2_HEVC_SLICE_PARAMS_FLAG_DEPENDENT_SLICE_SEGMENT : 0), }; /* *INDENT-ON* */ for (i = 0; i < slice_hdr->num_entry_point_offsets; i++) { guint32 entry_point_offset = slice_hdr->entry_point_offset_minus1[i] + 1; g_array_append_val (self->entry_point_offsets, entry_point_offset); } if (GST_H265_IS_I_SLICE (slice_hdr) || (!pps->weighted_pred_flag && GST_H265_IS_P_SLICE (slice_hdr)) || (!pps->weighted_bipred_flag && GST_H265_IS_B_SLICE (slice_hdr))) return; for (i = 0; i <= slice_hdr->num_ref_idx_l0_active_minus1; i++) { if (!slice_hdr->pred_weight_table.luma_weight_l0_flag[i]) continue; params->pred_weight_table.delta_luma_weight_l0[i] = slice_hdr->pred_weight_table.delta_luma_weight_l0[i]; params->pred_weight_table.luma_offset_l0[i] = slice_hdr->pred_weight_table.luma_offset_l0[i]; } chroma_log2_weight_denom = slice_hdr->pred_weight_table.luma_log2_weight_denom + slice_hdr->pred_weight_table.delta_chroma_log2_weight_denom; if (slice_hdr->pps->sps->chroma_array_type != 0) { for (i = 0; i <= slice_hdr->num_ref_idx_l0_active_minus1; i++) { if (!slice_hdr->pred_weight_table.chroma_weight_l0_flag[i]) continue; for (j = 0; j < 2; j++) { gint16 delta_chroma_offset_l0 = slice_hdr->pred_weight_table.delta_chroma_offset_l0[i][j]; gint chroma_offset; params->pred_weight_table.delta_chroma_weight_l0[i][j] = slice_hdr->pred_weight_table.delta_chroma_weight_l0[i][j]; /* Find ChromaWeightL0 */ chroma_weight = (1 << chroma_log2_weight_denom) + slice_hdr->pred_weight_table.delta_chroma_weight_l0[i][j]; chroma_offset = WpOffsetHalfRangeC + delta_chroma_offset_l0 - ((WpOffsetHalfRangeC * chroma_weight) >> chroma_log2_weight_denom); /* 7-56 */ params->pred_weight_table.chroma_offset_l0[i][j] = CLAMP (chroma_offset, -WpOffsetHalfRangeC, WpOffsetHalfRangeC - 1); } } } /* Skip l1 if this is not a B-Frame. */ if (!GST_H265_IS_B_SLICE (slice_hdr)) return; for (i = 0; i <= slice_hdr->num_ref_idx_l1_active_minus1; i++) { if (!slice_hdr->pred_weight_table.luma_weight_l1_flag[i]) continue; params->pred_weight_table.delta_luma_weight_l1[i] = slice_hdr->pred_weight_table.delta_luma_weight_l1[i]; params->pred_weight_table.luma_offset_l1[i] = slice_hdr->pred_weight_table.luma_offset_l1[i]; } if (slice_hdr->pps->sps->chroma_array_type != 0) { for (i = 0; i <= slice_hdr->num_ref_idx_l1_active_minus1; i++) { if (!slice_hdr->pred_weight_table.chroma_weight_l1_flag[i]) continue; for (j = 0; j < 2; j++) { gint16 delta_chroma_offset_l1 = slice_hdr->pred_weight_table.delta_chroma_offset_l1[i][j]; gint chroma_offset; params->pred_weight_table.delta_chroma_weight_l1[i][j] = slice_hdr->pred_weight_table.delta_chroma_weight_l1[i][j]; /* Find ChromaWeightL1 */ chroma_weight = (1 << chroma_log2_weight_denom) + slice_hdr->pred_weight_table.delta_chroma_weight_l1[i][j]; chroma_offset = WpOffsetHalfRangeC + delta_chroma_offset_l1 - ((WpOffsetHalfRangeC * chroma_weight) >> chroma_log2_weight_denom); /* 7-56 */ params->pred_weight_table.chroma_offset_l1[i][j] = CLAMP (chroma_offset, -WpOffsetHalfRangeC, WpOffsetHalfRangeC - 1); } } } } static guint8 lookup_dpb_index (struct v4l2_hevc_dpb_entry dpb[16], GstH265Picture * ref_pic) { guint64 ref_ts; gint i; /* Reference list may have wholes in case a ref is missing, we should mark * the whole and avoid moving items in the list */ if (!ref_pic) return 0xff; ref_ts = (guint64) GST_CODEC_PICTURE_FRAME_NUMBER (ref_pic) * 1000; for (i = 0; i < 16; i++) { if (dpb[i].timestamp == ref_ts) return i; } return 0xff; } static void gst_v4l2_codec_h265_dec_fill_references (GstV4l2CodecH265Dec * self, GArray * ref_pic_list0, GArray * ref_pic_list1) { struct v4l2_ctrl_hevc_slice_params *slice_params; struct v4l2_ctrl_hevc_decode_params *decode_params = &self->decode_params; gint i; slice_params = &g_array_index (self->slice_params, struct v4l2_ctrl_hevc_slice_params, self->num_slices - 1); memset (slice_params->ref_idx_l0, 0xff, sizeof (slice_params->ref_idx_l0)); memset (slice_params->ref_idx_l1, 0xff, sizeof (slice_params->ref_idx_l1)); for (i = 0; i < ref_pic_list0->len; i++) { GstH265Picture *ref_pic = g_array_index (ref_pic_list0, GstH265Picture *, i); slice_params->ref_idx_l0[i] = lookup_dpb_index (decode_params->dpb, ref_pic); } for (i = 0; i < ref_pic_list1->len; i++) { GstH265Picture *ref_pic = g_array_index (ref_pic_list1, GstH265Picture *, i); slice_params->ref_idx_l1[i] = lookup_dpb_index (decode_params->dpb, ref_pic); } } static GstFlowReturn gst_v4l2_codec_h265_dec_new_sequence (GstH265Decoder * decoder, const GstH265SPS * sps, gint max_dpb_size) { GstV4l2CodecH265Dec *self = GST_V4L2_CODEC_H265_DEC (decoder); gint crop_width = sps->width; gint crop_height = sps->height; gboolean negotiation_needed = FALSE; if (self->vinfo.finfo->format == GST_VIDEO_FORMAT_UNKNOWN) negotiation_needed = TRUE; /* TODO check if CREATE_BUFS is supported, and simply grow the pool */ if (self->min_pool_size < max_dpb_size) { self->min_pool_size = max_dpb_size; negotiation_needed = TRUE; } self->need_crop = FALSE; if (sps->conformance_window_flag) { crop_width = sps->crop_rect_width; crop_height = sps->crop_rect_height; self->crop_rect_width = sps->crop_rect_width; self->crop_rect_height = sps->crop_rect_height; self->crop_rect_x = sps->crop_rect_x; self->crop_rect_y = sps->crop_rect_y; /* conformance_window_flag could be set but with zeroed * parameters so check if we really need to crop */ self->need_crop |= self->crop_rect_width != sps->width; self->need_crop |= self->crop_rect_height != sps->height; self->need_crop |= self->crop_rect_x != 0; self->need_crop |= self->crop_rect_y != 0; } /* TODO Check if current buffers are large enough, and reuse them */ if (self->display_width != crop_width || self->display_height != crop_height || self->coded_width != sps->width || self->coded_height != sps->height) { self->display_width = crop_width; self->display_height = crop_height; self->coded_width = sps->width; self->coded_height = sps->height; negotiation_needed = TRUE; GST_INFO_OBJECT (self, "Resolution changed to %dx%d (%ix%i)", self->display_width, self->display_height, self->coded_width, self->coded_height); } if (self->bitdepth != sps->bit_depth_luma_minus8 + 8) { self->bitdepth = sps->bit_depth_luma_minus8 + 8; negotiation_needed = TRUE; GST_INFO_OBJECT (self, "Bitdepth changed to %u", self->bitdepth); } if (self->chroma_format_idc != sps->chroma_format_idc) { self->chroma_format_idc = sps->chroma_format_idc; negotiation_needed = TRUE; GST_INFO_OBJECT (self, "Chroma format changed to %i", self->chroma_format_idc); } gst_v4l2_codec_h265_dec_fill_sequence (self, sps); if (negotiation_needed) { gst_v4l2_codec_h265_dec_streamoff (self); if (!gst_video_decoder_negotiate (GST_VIDEO_DECODER (self))) { GST_ERROR_OBJECT (self, "Failed to negotiate with downstream"); return GST_FLOW_NOT_NEGOTIATED; } } /* Check if we can zero-copy buffers */ if (!self->has_videometa) { GstVideoInfo ref_vinfo; gint i; gst_video_info_set_format (&ref_vinfo, GST_VIDEO_INFO_FORMAT (&self->vinfo), self->display_width, self->display_height); for (i = 0; i < GST_VIDEO_INFO_N_PLANES (&self->vinfo); i++) { if (self->vinfo.stride[i] != ref_vinfo.stride[i] || self->vinfo.offset[i] != ref_vinfo.offset[i]) { GST_WARNING_OBJECT (self, "GstVideoMeta support required, copying frames."); self->copy_frames = TRUE; break; } } } else { self->copy_frames = self->need_crop; } return GST_FLOW_OK; } static gboolean gst_v4l2_codec_h265_dec_ensure_bitstream (GstV4l2CodecH265Dec * self) { if (self->bitstream) goto done; self->bitstream = gst_v4l2_codec_allocator_alloc (self->sink_allocator); if (!self->bitstream) { GST_ELEMENT_ERROR (self, RESOURCE, NO_SPACE_LEFT, ("Not enough memory to decode H265 stream."), (NULL)); return FALSE; } if (!gst_memory_map (self->bitstream, &self->bitstream_map, GST_MAP_WRITE)) { GST_ELEMENT_ERROR (self, RESOURCE, WRITE, ("Could not access bitstream memory for writing"), (NULL)); g_clear_pointer (&self->bitstream, gst_memory_unref); return FALSE; } done: /* We use this field to track how much we have written */ self->bitstream_map.size = 0; return TRUE; } static void gst_v4l2_codec_h265_dec_fill_decode_params (GstV4l2CodecH265Dec * self, GstH265Picture * picture, GstH265Slice * slice, GstH265Dpb * dpb) { GstH265Decoder *decoder = (GstH265Decoder *) self; GArray *refs = gst_h265_dpb_get_pictures_all (dpb); gint i; /* *INDENT-OFF* */ self->decode_params = (struct v4l2_ctrl_hevc_decode_params) { .pic_order_cnt_val = picture->pic_order_cnt, .num_poc_st_curr_before = decoder->NumPocStCurrBefore, .num_poc_st_curr_after = decoder->NumPocStCurrAfter, .num_poc_lt_curr = decoder->NumPocLtCurr, .num_delta_pocs_of_ref_rps_idx = slice->header.short_term_ref_pic_sets.NumDeltaPocsOfRefRpsIdx, .flags = (GST_H265_IS_NAL_TYPE_IRAP (slice->nalu.type) ? V4L2_HEVC_DECODE_PARAM_FLAG_IRAP_PIC : 0) | (GST_H265_IS_NAL_TYPE_IDR (slice->nalu.type) ? V4L2_HEVC_DECODE_PARAM_FLAG_IDR_PIC : 0) | (slice->header.no_output_of_prior_pics_flag ? V4L2_HEVC_DECODE_PARAM_FLAG_NO_OUTPUT_OF_PRIOR : 0), }; /* *INDENT-ON* */ for (i = 0; i < refs->len; i++) { GstH265Picture *ref_pic = g_array_index (refs, GstH265Picture *, i); if (!ref_pic->ref) continue; /* *INDENT-OFF* */ self->decode_params.dpb[self->decode_params.num_active_dpb_entries++] = (struct v4l2_hevc_dpb_entry) { /* * The reference is multiplied by 1000 because it's wassed as micro * seconds and this TS is nanosecond. */ .timestamp = (guint64) GST_CODEC_PICTURE_FRAME_NUMBER (ref_pic) * 1000, .flags = ref_pic->long_term ? V4L2_HEVC_DPB_ENTRY_LONG_TERM_REFERENCE : 0, .field_pic = ref_pic->pic_struct, .pic_order_cnt_val = ref_pic->pic_order_cnt, }; /* *INDENT-ON* */ } for (i = 0; i < 16; i++) { self->decode_params.poc_st_curr_before[i] = lookup_dpb_index (self->decode_params.dpb, decoder->RefPicSetStCurrBefore[i]); self->decode_params.poc_st_curr_after[i] = lookup_dpb_index (self->decode_params.dpb, decoder->RefPicSetStCurrAfter[i]); self->decode_params.poc_lt_curr[i] = lookup_dpb_index (self->decode_params.dpb, decoder->RefPicSetLtCurr[i]); } g_array_unref (refs); } static GstFlowReturn gst_v4l2_codec_h265_dec_start_picture (GstH265Decoder * decoder, GstH265Picture * picture, GstH265Slice * slice, GstH265Dpb * dpb) { GstV4l2CodecH265Dec *self = GST_V4L2_CODEC_H265_DEC (decoder); /* FIXME base class should not call us if negotiation failed */ if (!self->sink_allocator) return GST_FLOW_NOT_NEGOTIATED; if (!gst_v4l2_codec_h265_dec_ensure_bitstream (self)) return GST_FLOW_ERROR; /* The base class will only emit new_sequence for allocation related changes * in the SPS, make sure to keep the SPS upt-to-date */ if (slice->header.pps->sps->id != self->sps.seq_parameter_set_id) gst_v4l2_codec_h265_dec_fill_sequence (self, slice->header.pps->sps); gst_v4l2_codec_h265_dec_fill_pps (self, slice->header.pps); gst_v4l2_codec_h265_dec_fill_scaling_matrix (self, slice->header.pps); gst_v4l2_codec_h265_dec_fill_decode_params (self, picture, slice, dpb); self->first_slice = TRUE; self->num_slices = 0; g_array_set_size (self->entry_point_offsets, 0); return GST_FLOW_OK; } static gboolean gst_v4l2_codec_h265_dec_crop_output_buffer (GstV4l2CodecH265Dec * self, GstVideoFrame * dest_frame, GstVideoFrame * src_frame) { GstVideoInfo dst_info = dest_frame->info; dst_info.fps_n = src_frame->info.fps_n; dst_info.fps_d = src_frame->info.fps_d; if (self->convert) { gboolean new_convert = FALSE; gint x = 0, y = 0, width = 0, height = 0; const GstStructure *config = gst_video_converter_get_config (self->convert); if (!gst_structure_get_int (config, GST_VIDEO_CONVERTER_OPT_SRC_X, &x) || !gst_structure_get_int (config, GST_VIDEO_CONVERTER_OPT_SRC_Y, &y) || !gst_structure_get_int (config, GST_VIDEO_CONVERTER_OPT_SRC_WIDTH, &width) || !gst_structure_get_int (config, GST_VIDEO_CONVERTER_OPT_SRC_HEIGHT, &height)) new_convert = TRUE; new_convert |= (self->crop_rect_x != x); new_convert |= (self->crop_rect_y != y); new_convert |= (self->crop_rect_width != width); new_convert |= (self->crop_rect_height != height); /* No need to check dest, it always has (0,0) -> (width, height) */ if (new_convert) g_clear_pointer (&self->convert, gst_video_converter_free); } if (!self->convert) { self->convert = gst_video_converter_new (&src_frame->info, &dst_info, gst_structure_new ("options", GST_VIDEO_CONVERTER_OPT_DITHER_METHOD, GST_TYPE_VIDEO_DITHER_METHOD, GST_VIDEO_DITHER_NONE, GST_VIDEO_CONVERTER_OPT_DITHER_QUANTIZATION, G_TYPE_UINT, 0, GST_VIDEO_CONVERTER_OPT_CHROMA_MODE, GST_TYPE_VIDEO_CHROMA_MODE, GST_VIDEO_CHROMA_MODE_NONE, GST_VIDEO_CONVERTER_OPT_MATRIX_MODE, GST_TYPE_VIDEO_MATRIX_MODE, GST_VIDEO_MATRIX_MODE_NONE, GST_VIDEO_CONVERTER_OPT_SRC_X, G_TYPE_INT, self->crop_rect_x, GST_VIDEO_CONVERTER_OPT_SRC_Y, G_TYPE_INT, self->crop_rect_y, GST_VIDEO_CONVERTER_OPT_SRC_WIDTH, G_TYPE_INT, self->crop_rect_width, GST_VIDEO_CONVERTER_OPT_SRC_HEIGHT, G_TYPE_INT, self->crop_rect_height, GST_VIDEO_CONVERTER_OPT_DEST_X, G_TYPE_INT, 0, GST_VIDEO_CONVERTER_OPT_DEST_Y, G_TYPE_INT, 0, GST_VIDEO_CONVERTER_OPT_DEST_WIDTH, G_TYPE_INT, self->display_width, GST_VIDEO_CONVERTER_OPT_DEST_HEIGHT, G_TYPE_INT, self->display_height, NULL)); if (!self->convert) { GST_WARNING_OBJECT (self, "failed to create a video convert"); return FALSE; } } gst_video_converter_frame (self->convert, src_frame, dest_frame); return TRUE; } static gboolean gst_v4l2_codec_h265_dec_copy_output_buffer (GstV4l2CodecH265Dec * self, GstVideoCodecFrame * codec_frame) { GstVideoFrame src_frame; GstVideoFrame dest_frame; GstVideoInfo dest_vinfo; GstBuffer *buffer; gst_video_info_set_format (&dest_vinfo, GST_VIDEO_INFO_FORMAT (&self->vinfo), self->display_width, self->display_height); buffer = gst_video_decoder_allocate_output_buffer (GST_VIDEO_DECODER (self)); if (!buffer) goto fail; if (!gst_video_frame_map (&src_frame, &self->vinfo, codec_frame->output_buffer, GST_MAP_READ)) goto fail; if (!gst_video_frame_map (&dest_frame, &dest_vinfo, buffer, GST_MAP_WRITE)) { gst_video_frame_unmap (&dest_frame); goto fail; } if (self->need_crop) { if (!gst_v4l2_codec_h265_dec_crop_output_buffer (self, &dest_frame, &src_frame)) { gst_video_frame_unmap (&src_frame); gst_video_frame_unmap (&dest_frame); GST_ERROR_OBJECT (self, "fail to apply the video crop."); goto fail; } } else { /* gst_video_frame_copy can crop this, but does not know, so let make it * think it's all right */ GST_VIDEO_INFO_WIDTH (&src_frame.info) = self->display_width; GST_VIDEO_INFO_HEIGHT (&src_frame.info) = self->display_height; if (!gst_video_frame_copy (&dest_frame, &src_frame)) { gst_video_frame_unmap (&src_frame); gst_video_frame_unmap (&dest_frame); goto fail; } } gst_video_frame_unmap (&src_frame); gst_video_frame_unmap (&dest_frame); gst_buffer_replace (&codec_frame->output_buffer, buffer); gst_buffer_unref (buffer); return TRUE; fail: GST_ERROR_OBJECT (self, "Failed copy output buffer."); return FALSE; } static GstFlowReturn gst_v4l2_codec_h265_dec_output_picture (GstH265Decoder * decoder, GstVideoCodecFrame * frame, GstH265Picture * picture) { GstV4l2CodecH265Dec *self = GST_V4L2_CODEC_H265_DEC (decoder); GstVideoDecoder *vdec = GST_VIDEO_DECODER (decoder); GstV4l2Request *request = gst_h265_picture_get_user_data (picture); GstCodecPicture *codec_picture = GST_CODEC_PICTURE (picture); gint ret; if (codec_picture->discont_state) { if (!gst_video_decoder_negotiate (vdec)) { GST_ERROR_OBJECT (vdec, "Could not re-negotiate with updated state"); return FALSE; } } GST_DEBUG_OBJECT (self, "Output picture %u", codec_picture->system_frame_number); ret = gst_v4l2_request_set_done (request); if (ret == 0) { GST_ELEMENT_ERROR (self, STREAM, DECODE, ("Decoding frame %u took too long", codec_picture->system_frame_number), (NULL)); goto error; } else if (ret < 0) { GST_ELEMENT_ERROR (self, STREAM, DECODE, ("Decoding request failed: %s", g_strerror (errno)), (NULL)); goto error; } g_return_val_if_fail (frame->output_buffer, GST_FLOW_ERROR); if (gst_v4l2_request_failed (request)) { GST_ELEMENT_ERROR (self, STREAM, DECODE, ("Failed to decode frame %u", codec_picture->system_frame_number), (NULL)); goto error; } /* Hold on reference buffers for the rest of the picture lifetime */ gst_h265_picture_set_user_data (picture, gst_buffer_ref (frame->output_buffer), (GDestroyNotify) gst_buffer_unref); if (self->copy_frames) gst_v4l2_codec_h265_dec_copy_output_buffer (self, frame); gst_h265_picture_unref (picture); return gst_video_decoder_finish_frame (vdec, frame); error: gst_video_decoder_drop_frame (vdec, frame); gst_h265_picture_unref (picture); return GST_FLOW_ERROR; } static void gst_v4l2_codec_h265_dec_reset_picture (GstV4l2CodecH265Dec * self) { if (self->bitstream) { if (self->bitstream_map.memory) gst_memory_unmap (self->bitstream, &self->bitstream_map); g_clear_pointer (&self->bitstream, gst_memory_unref); self->bitstream_map = (GstMapInfo) GST_MAP_INFO_INIT; } self->num_slices = 0; g_array_set_size (self->entry_point_offsets, 0); } static gboolean gst_v4l2_codec_h265_dec_ensure_output_buffer (GstV4l2CodecH265Dec * self, GstVideoCodecFrame * frame) { GstBuffer *buffer; GstFlowReturn flow_ret; if (frame->output_buffer) return TRUE; flow_ret = gst_buffer_pool_acquire_buffer (GST_BUFFER_POOL (self->src_pool), &buffer, NULL); if (flow_ret != GST_FLOW_OK) { if (flow_ret == GST_FLOW_FLUSHING) GST_DEBUG_OBJECT (self, "Frame decoding aborted, we are flushing."); else GST_ELEMENT_ERROR (self, RESOURCE, WRITE, ("No more picture buffer available."), (NULL)); return FALSE; } frame->output_buffer = buffer; return TRUE; } static gboolean gst_v4l2_codec_h265_dec_submit_bitstream (GstV4l2CodecH265Dec * self, GstH265Picture * picture, guint flags) { GstV4l2Request *prev_request, *request = NULL; gsize bytesused; gboolean ret = FALSE; gint num_controls = 0; /* *INDENT-OFF* */ /* Reserve space for controls */ struct v4l2_ext_control control[] = { { }, /* SPS */ { }, /* PPS */ { }, /* DECODE_PARAMS */ { }, /* SLICE_PARAMS */ { }, /* SCALING_MATRIX */ { }, /* ENTRY_POINT_OFFSETS */ }; /* *INDENT-ON* */ prev_request = gst_h265_picture_get_user_data (picture); bytesused = self->bitstream_map.size; gst_memory_unmap (self->bitstream, &self->bitstream_map); self->bitstream_map = (GstMapInfo) GST_MAP_INFO_INIT; gst_memory_resize (self->bitstream, 0, bytesused); if (prev_request) { request = gst_v4l2_decoder_alloc_sub_request (self->decoder, prev_request, self->bitstream); } else { GstVideoCodecFrame *frame; guint32 system_frame_number = GST_CODEC_PICTURE_FRAME_NUMBER (picture); frame = gst_video_decoder_get_frame (GST_VIDEO_DECODER (self), system_frame_number); g_return_val_if_fail (frame, FALSE); if (!gst_v4l2_codec_h265_dec_ensure_output_buffer (self, frame)) goto done; request = gst_v4l2_decoder_alloc_request (self->decoder, system_frame_number, self->bitstream, frame->output_buffer); gst_video_codec_frame_unref (frame); } if (!request) { GST_ELEMENT_ERROR (self, RESOURCE, NO_SPACE_LEFT, ("Failed to allocate a media request object."), (NULL)); goto done; } if (self->need_sequence) { control[num_controls].id = V4L2_CID_STATELESS_HEVC_SPS; control[num_controls].ptr = &self->sps; control[num_controls].size = sizeof (self->sps); num_controls++; self->need_sequence = FALSE; } if (self->first_slice) { control[num_controls].id = V4L2_CID_STATELESS_HEVC_PPS; control[num_controls].ptr = &self->pps; control[num_controls].size = sizeof (self->pps); num_controls++; if (self->support_scaling_matrix) { control[num_controls].id = V4L2_CID_STATELESS_HEVC_SCALING_MATRIX; control[num_controls].ptr = &self->scaling_matrix; control[num_controls].size = sizeof (self->scaling_matrix); num_controls++; } control[num_controls].id = V4L2_CID_STATELESS_HEVC_DECODE_PARAMS; control[num_controls].ptr = &self->decode_params; control[num_controls].size = sizeof (self->decode_params); num_controls++; self->first_slice = FALSE; } /* Slice parameters are only filled for slice based or frame based with * slices decoders */ if (self->num_slices && !is_frame_based (self)) { control[num_controls].id = V4L2_CID_STATELESS_HEVC_SLICE_PARAMS; control[num_controls].ptr = self->slice_params->data; control[num_controls].size = g_array_get_element_size (self->slice_params) * self->num_slices; num_controls++; if (self->support_entry_point_offsets && self->entry_point_offsets->len) { control[num_controls].id = V4L2_CID_STATELESS_HEVC_ENTRY_POINT_OFFSETS; control[num_controls].ptr = self->entry_point_offsets->data; control[num_controls].size = g_array_get_element_size (self->entry_point_offsets) * self->entry_point_offsets->len; num_controls++; } } if (num_controls > G_N_ELEMENTS (control)) g_error ("Set too many controls, increase control[] size"); if (!gst_v4l2_decoder_set_controls (self->decoder, request, control, num_controls)) { GST_ELEMENT_ERROR (self, RESOURCE, WRITE, ("Driver did not accept the bitstream parameters."), (NULL)); goto done; } if (!gst_v4l2_request_queue (request, flags)) { GST_ELEMENT_ERROR (self, RESOURCE, WRITE, ("Driver did not accept the decode request."), (NULL)); goto done; } gst_h265_picture_set_user_data (picture, g_steal_pointer (&request), (GDestroyNotify) gst_v4l2_request_unref); ret = TRUE; done: if (request) gst_v4l2_request_unref (request); gst_v4l2_codec_h265_dec_reset_picture (self); return ret; } static GstFlowReturn gst_v4l2_codec_h265_dec_decode_slice (GstH265Decoder * decoder, GstH265Picture * picture, GstH265Slice * slice, GArray * ref_pic_list0, GArray * ref_pic_list1) { GstV4l2CodecH265Dec *self = GST_V4L2_CODEC_H265_DEC (decoder); gsize sc_off = 0; gsize nal_size; guint8 *bitstream_data; if (!is_frame_based (self)) { if (is_slice_based (self)) { if (self->bitstream_map.size) { /* In slice mode, we submit the pending slice asking the accelerator to * hold on the picture */ if (!gst_v4l2_codec_h265_dec_submit_bitstream (self, picture, V4L2_BUF_FLAG_M2M_HOLD_CAPTURE_BUF) || !gst_v4l2_codec_h265_dec_ensure_bitstream (self)) return GST_FLOW_ERROR; } } /* in frame based mode with slices, we need to provide the required data for * the whole frame, therefore we don't submit the bitstream here */ gst_v4l2_codec_h265_dec_fill_slice_params (self, slice, picture); gst_v4l2_codec_h265_dec_fill_references (self, ref_pic_list0, ref_pic_list1); } /* if it is the first slice segment provide the short and long term * reference pictures set size */ if (slice->header.first_slice_segment_in_pic_flag) { struct v4l2_ctrl_hevc_decode_params *decode_params = &self->decode_params; decode_params->short_term_ref_pic_set_size = slice->header.short_term_ref_pic_set_size; decode_params->long_term_ref_pic_set_size = slice->header.long_term_ref_pic_set_size; } bitstream_data = self->bitstream_map.data + self->bitstream_map.size; if (needs_start_codes (self)) sc_off = 3; nal_size = sc_off + slice->nalu.size; if (self->bitstream_map.size + nal_size > self->bitstream_map.maxsize) { GST_ELEMENT_ERROR (decoder, RESOURCE, NO_SPACE_LEFT, ("Not enough space to send all slice of an H265 frame."), (NULL)); return GST_FLOW_ERROR; } if (needs_start_codes (self)) { bitstream_data[0] = 0x00; bitstream_data[1] = 0x00; bitstream_data[2] = 0x01; } memcpy (bitstream_data + sc_off, slice->nalu.data + slice->nalu.offset, slice->nalu.size); self->bitstream_map.size += nal_size; return GST_FLOW_OK; } static GstFlowReturn gst_v4l2_codec_h265_dec_end_picture (GstH265Decoder * decoder, GstH265Picture * picture) { GstV4l2CodecH265Dec *self = GST_V4L2_CODEC_H265_DEC (decoder); if (!gst_v4l2_codec_h265_dec_submit_bitstream (self, picture, 0)) return GST_FLOW_ERROR; return GST_FLOW_OK; } static guint gst_v4l2_codec_h265_dec_get_preferred_output_delay (GstH265Decoder * decoder, gboolean is_live) { GstV4l2CodecH265Dec *self = GST_V4L2_CODEC_H265_DEC (decoder); guint delay; if (is_live) delay = 0; else delay = 1; gst_v4l2_decoder_set_render_delay (self->decoder, delay); return delay; } static void gst_v4l2_codec_h265_dec_set_flushing (GstV4l2CodecH265Dec * self, gboolean flushing) { if (self->sink_allocator) gst_v4l2_codec_allocator_set_flushing (self->sink_allocator, flushing); if (self->src_allocator) gst_v4l2_codec_allocator_set_flushing (self->src_allocator, flushing); } static gboolean gst_v4l2_codec_h265_dec_flush (GstVideoDecoder * decoder) { GstV4l2CodecH265Dec *self = GST_V4L2_CODEC_H265_DEC (decoder); GST_DEBUG_OBJECT (self, "Flushing decoder state."); gst_v4l2_decoder_flush (self->decoder); gst_v4l2_codec_h265_dec_set_flushing (self, FALSE); return GST_VIDEO_DECODER_CLASS (parent_class)->flush (decoder); } static gboolean gst_v4l2_codec_h265_dec_sink_event (GstVideoDecoder * decoder, GstEvent * event) { GstV4l2CodecH265Dec *self = GST_V4L2_CODEC_H265_DEC (decoder); switch (GST_EVENT_TYPE (event)) { case GST_EVENT_FLUSH_START: GST_DEBUG_OBJECT (self, "flush start"); gst_v4l2_codec_h265_dec_set_flushing (self, TRUE); break; default: break; } return GST_VIDEO_DECODER_CLASS (parent_class)->sink_event (decoder, event); } static GstStateChangeReturn gst_v4l2_codec_h265_dec_change_state (GstElement * element, GstStateChange transition) { GstV4l2CodecH265Dec *self = GST_V4L2_CODEC_H265_DEC (element); if (transition == GST_STATE_CHANGE_PAUSED_TO_READY) gst_v4l2_codec_h265_dec_set_flushing (self, TRUE); return GST_ELEMENT_CLASS (parent_class)->change_state (element, transition); } static void gst_v4l2_codec_h265_dec_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec) { GstV4l2CodecH265Dec *self = GST_V4L2_CODEC_H265_DEC (object); GObject *dec = G_OBJECT (self->decoder); switch (prop_id) { default: gst_v4l2_decoder_set_property (dec, prop_id - PROP_LAST, value, pspec); break; } } static void gst_v4l2_codec_h265_dec_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec) { GstV4l2CodecH265Dec *self = GST_V4L2_CODEC_H265_DEC (object); GObject *dec = G_OBJECT (self->decoder); switch (prop_id) { default: gst_v4l2_decoder_get_property (dec, prop_id - PROP_LAST, value, pspec); break; } } static void gst_v4l2_codec_h265_dec_init (GstV4l2CodecH265Dec * self) { } static void gst_v4l2_codec_h265_dec_subinit (GstV4l2CodecH265Dec * self, GstV4l2CodecH265DecClass * klass) { self->decoder = gst_v4l2_decoder_new (klass->device); gst_video_info_init (&self->vinfo); self->slice_params = g_array_sized_new (FALSE, TRUE, sizeof (struct v4l2_ctrl_hevc_slice_params), 4); g_array_set_size (self->slice_params, 4); self->entry_point_offsets = g_array_sized_new (FALSE, TRUE, sizeof (guint32), 4); } static void gst_v4l2_codec_h265_dec_dispose (GObject * object) { GstV4l2CodecH265Dec *self = GST_V4L2_CODEC_H265_DEC (object); g_clear_object (&self->decoder); g_clear_pointer (&self->slice_params, g_array_unref); G_OBJECT_CLASS (parent_class)->dispose (object); } static void gst_v4l2_codec_h265_dec_class_init (GstV4l2CodecH265DecClass * klass) { } static void gst_v4l2_codec_h265_dec_subclass_init (GstV4l2CodecH265DecClass * klass, GstV4l2CodecDevice * device) { GObjectClass *gobject_class = G_OBJECT_CLASS (klass); GstElementClass *element_class = GST_ELEMENT_CLASS (klass); GstVideoDecoderClass *decoder_class = GST_VIDEO_DECODER_CLASS (klass); GstH265DecoderClass *h265decoder_class = GST_H265_DECODER_CLASS (klass); gobject_class->set_property = gst_v4l2_codec_h265_dec_set_property; gobject_class->get_property = gst_v4l2_codec_h265_dec_get_property; gobject_class->dispose = gst_v4l2_codec_h265_dec_dispose; gst_element_class_set_static_metadata (element_class, "V4L2 Stateless H.265 Video Decoder", "Codec/Decoder/Video/Hardware", "A V4L2 based H.265 video decoder", "Nicolas Dufresne "); gst_element_class_add_static_pad_template (element_class, &sink_template); gst_element_class_add_static_pad_template (element_class, &src_template); element_class->change_state = GST_DEBUG_FUNCPTR (gst_v4l2_codec_h265_dec_change_state); decoder_class->open = GST_DEBUG_FUNCPTR (gst_v4l2_codec_h265_dec_open); decoder_class->close = GST_DEBUG_FUNCPTR (gst_v4l2_codec_h265_dec_close); decoder_class->stop = GST_DEBUG_FUNCPTR (gst_v4l2_codec_h265_dec_stop); decoder_class->negotiate = GST_DEBUG_FUNCPTR (gst_v4l2_codec_h265_dec_negotiate); decoder_class->decide_allocation = GST_DEBUG_FUNCPTR (gst_v4l2_codec_h265_dec_decide_allocation); decoder_class->flush = GST_DEBUG_FUNCPTR (gst_v4l2_codec_h265_dec_flush); decoder_class->sink_event = GST_DEBUG_FUNCPTR (gst_v4l2_codec_h265_dec_sink_event); h265decoder_class->new_sequence = GST_DEBUG_FUNCPTR (gst_v4l2_codec_h265_dec_new_sequence); h265decoder_class->output_picture = GST_DEBUG_FUNCPTR (gst_v4l2_codec_h265_dec_output_picture); h265decoder_class->start_picture = GST_DEBUG_FUNCPTR (gst_v4l2_codec_h265_dec_start_picture); h265decoder_class->decode_slice = GST_DEBUG_FUNCPTR (gst_v4l2_codec_h265_dec_decode_slice); h265decoder_class->end_picture = GST_DEBUG_FUNCPTR (gst_v4l2_codec_h265_dec_end_picture); h265decoder_class->get_preferred_output_delay = GST_DEBUG_FUNCPTR (gst_v4l2_codec_h265_dec_get_preferred_output_delay); klass->device = device; gst_v4l2_decoder_install_properties (gobject_class, PROP_LAST, device); } void gst_v4l2_codec_h265_dec_register (GstPlugin * plugin, GstV4l2Decoder * decoder, GstV4l2CodecDevice * device, guint rank) { GstCaps *src_caps; guint version; GST_DEBUG_CATEGORY_INIT (v4l2_h265dec_debug, "v4l2codecs-h265dec", 0, "V4L2 stateless h265 decoder"); if (!gst_v4l2_decoder_set_sink_fmt (decoder, V4L2_PIX_FMT_HEVC_SLICE, 320, 240, 8)) return; src_caps = gst_v4l2_decoder_enum_src_formats (decoder); if (gst_caps_is_empty (src_caps)) { GST_WARNING ("Not registering H265 decoder since it produces no " "supported format"); goto done; } version = gst_v4l2_decoder_get_version (decoder); if (version < V4L2_MIN_KERNEL_VERSION) GST_WARNING ("V4L2 API v%u.%u too old, at least v%u.%u required", (version >> 16) & 0xff, (version >> 8) & 0xff, V4L2_MIN_KERNEL_VER_MAJOR, V4L2_MIN_KERNEL_VER_MINOR); if (!gst_v4l2_decoder_h265_api_check (decoder)) { GST_WARNING ("Not registering H265 decoder as it failed ABI check."); goto done; } gst_v4l2_decoder_register (plugin, GST_TYPE_V4L2_CODEC_H265_DEC, (GClassInitFunc) gst_v4l2_codec_h265_dec_subclass_init, gst_mini_object_ref (GST_MINI_OBJECT (device)), (GInstanceInitFunc) gst_v4l2_codec_h265_dec_subinit, "v4l2sl%sh265dec", device, rank, NULL); done: gst_caps_unref (src_caps); }