diff options
author | Anton Khirnov <anton@khirnov.net> | 2016-10-02 08:51:32 +0200 |
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committer | Anton Khirnov <anton@khirnov.net> | 2016-12-19 08:13:08 +0100 |
commit | ea8b730d8e67152107d7fcdd5590bbb51ec236b1 (patch) | |
tree | d0c99fe8db6b223fee7b1b77647c90fa8ac4a50f /libavcodec/vaapi_hevc.c | |
parent | 1783d7ec03d730c5bd96c07bc5fa7aa566f85c66 (diff) | |
download | ffmpeg-ea8b730d8e67152107d7fcdd5590bbb51ec236b1.tar.gz |
hevcdec: add a VAAPI hwaccel
Partially based on a patch by Timo Rothenpieler <timo@rothenpieler.org>.
Additional scaling list handling fix by Jun Zhao <mypopydev@gmail.com>.
Diffstat (limited to 'libavcodec/vaapi_hevc.c')
-rw-r--r-- | libavcodec/vaapi_hevc.c | 439 |
1 files changed, 439 insertions, 0 deletions
diff --git a/libavcodec/vaapi_hevc.c b/libavcodec/vaapi_hevc.c new file mode 100644 index 0000000000..4b4d8782ac --- /dev/null +++ b/libavcodec/vaapi_hevc.c @@ -0,0 +1,439 @@ +/* + * HEVC HW decode acceleration through VA API + * + * Copyright (C) 2015 Timo Rothenpieler <timo@rothenpieler.org> + * + * This file is part of Libav. + * + * Libav is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * Libav 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with Libav; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <va/va.h> +#include <va/va_dec_hevc.h> + +#include "avcodec.h" +#include "hevcdec.h" +#include "hwaccel.h" +#include "vaapi_decode.h" + +typedef struct VAAPIDecodePictureHEVC { + VAPictureParameterBufferHEVC pic_param; + VASliceParameterBufferHEVC last_slice_param; + const uint8_t *last_buffer; + size_t last_size; + + VAAPIDecodePicture pic; +} VAAPIDecodePictureHEVC; + +static void init_vaapi_pic(VAPictureHEVC *va_pic) +{ + va_pic->picture_id = VA_INVALID_ID; + va_pic->flags = VA_PICTURE_HEVC_INVALID; + va_pic->pic_order_cnt = 0; +} + +static void fill_vaapi_pic(VAPictureHEVC *va_pic, const HEVCFrame *pic, int rps_type) +{ + va_pic->picture_id = ff_vaapi_get_surface_id(pic->frame); + va_pic->pic_order_cnt = pic->poc; + va_pic->flags = rps_type; + + if (pic->flags & HEVC_FRAME_FLAG_LONG_REF) + va_pic->flags |= VA_PICTURE_HEVC_LONG_TERM_REFERENCE; + + if (pic->frame->interlaced_frame) { + va_pic->flags |= VA_PICTURE_HEVC_FIELD_PIC; + + if (!pic->frame->top_field_first) + va_pic->flags |= VA_PICTURE_HEVC_BOTTOM_FIELD; + } +} + +static int find_frame_rps_type(const HEVCContext *h, const HEVCFrame *pic) +{ + VASurfaceID pic_surf = ff_vaapi_get_surface_id(pic->frame); + int i; + + for (i = 0; i < h->rps[ST_CURR_BEF].nb_refs; i++) { + if (pic_surf == ff_vaapi_get_surface_id(h->rps[ST_CURR_BEF].ref[i]->frame)) + return VA_PICTURE_HEVC_RPS_ST_CURR_BEFORE; + } + + for (i = 0; i < h->rps[ST_CURR_AFT].nb_refs; i++) { + if (pic_surf == ff_vaapi_get_surface_id(h->rps[ST_CURR_AFT].ref[i]->frame)) + return VA_PICTURE_HEVC_RPS_ST_CURR_AFTER; + } + + for (i = 0; i < h->rps[LT_CURR].nb_refs; i++) { + if (pic_surf == ff_vaapi_get_surface_id(h->rps[LT_CURR].ref[i]->frame)) + return VA_PICTURE_HEVC_RPS_LT_CURR; + } + + return 0; +} + +static void fill_vaapi_reference_frames(const HEVCContext *h, VAPictureParameterBufferHEVC *pp) +{ + const HEVCFrame *current_picture = h->ref; + int i, j, rps_type; + + for (i = 0, j = 0; i < FF_ARRAY_ELEMS(pp->ReferenceFrames); i++) { + const HEVCFrame *frame = NULL; + + while (!frame && j < FF_ARRAY_ELEMS(h->DPB)) { + if (&h->DPB[j] != current_picture && (h->DPB[j].flags & (HEVC_FRAME_FLAG_LONG_REF | HEVC_FRAME_FLAG_SHORT_REF))) + frame = &h->DPB[j]; + j++; + } + + init_vaapi_pic(&pp->ReferenceFrames[i]); + + if (frame) { + rps_type = find_frame_rps_type(h, frame); + fill_vaapi_pic(&pp->ReferenceFrames[i], frame, rps_type); + } + } +} + +static int vaapi_hevc_start_frame(AVCodecContext *avctx, + av_unused const uint8_t *buffer, + av_unused uint32_t size) +{ + const HEVCContext *h = avctx->priv_data; + VAAPIDecodePictureHEVC *pic = h->ref->hwaccel_picture_private; + const HEVCSPS *sps = h->ps.sps; + const HEVCPPS *pps = h->ps.pps; + + const ScalingList *scaling_list = NULL; + int err, i; + + pic->pic.output_surface = ff_vaapi_get_surface_id(h->ref->frame); + + pic->pic_param = (VAPictureParameterBufferHEVC) { + .pic_fields.value = 0, + .slice_parsing_fields.value = 0, + .pic_width_in_luma_samples = sps->width, + .pic_height_in_luma_samples = sps->height, + .log2_min_luma_coding_block_size_minus3 = sps->log2_min_cb_size - 3, + .sps_max_dec_pic_buffering_minus1 = sps->temporal_layer[sps->max_sub_layers - 1].max_dec_pic_buffering - 1, + .log2_diff_max_min_luma_coding_block_size = sps->log2_diff_max_min_coding_block_size, + .log2_min_transform_block_size_minus2 = sps->log2_min_tb_size - 2, + .log2_diff_max_min_transform_block_size = sps->log2_max_trafo_size - sps->log2_min_tb_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->nb_st_rps, + .num_long_term_ref_pic_sps = sps->num_long_term_ref_pics_sps, + .num_ref_idx_l0_default_active_minus1 = pps->num_ref_idx_l0_default_active - 1, + .num_ref_idx_l1_default_active_minus1 = pps->num_ref_idx_l1_default_active - 1, + .init_qp_minus26 = pps->pic_init_qp_minus26, + .pps_cb_qp_offset = pps->cb_qp_offset, + .pps_cr_qp_offset = pps->cr_qp_offset, + .pcm_sample_bit_depth_luma_minus1 = sps->pcm.bit_depth - 1, + .pcm_sample_bit_depth_chroma_minus1 = sps->pcm.bit_depth_chroma - 1, + .log2_min_pcm_luma_coding_block_size_minus3 = sps->pcm.log2_min_pcm_cb_size - 3, + .log2_diff_max_min_pcm_luma_coding_block_size = sps->pcm.log2_max_pcm_cb_size - sps->pcm.log2_min_pcm_cb_size, + .diff_cu_qp_delta_depth = pps->diff_cu_qp_delta_depth, + .pps_beta_offset_div2 = pps->beta_offset / 2, + .pps_tc_offset_div2 = pps->tc_offset / 2, + .log2_parallel_merge_level_minus2 = pps->log2_parallel_merge_level - 2, + .bit_depth_luma_minus8 = sps->bit_depth - 8, + .bit_depth_chroma_minus8 = sps->bit_depth - 8, + .log2_max_pic_order_cnt_lsb_minus4 = sps->log2_max_poc_lsb - 4, + .num_extra_slice_header_bits = pps->num_extra_slice_header_bits, + .pic_fields.bits = { + .chroma_format_idc = sps->chroma_format_idc, + .tiles_enabled_flag = pps->tiles_enabled_flag, + .separate_colour_plane_flag = sps->separate_colour_plane_flag, + .pcm_enabled_flag = sps->pcm_enabled_flag, + .scaling_list_enabled_flag = sps->scaling_list_enable_flag, + .transform_skip_enabled_flag = pps->transform_skip_enabled_flag, + .amp_enabled_flag = sps->amp_enabled_flag, + .strong_intra_smoothing_enabled_flag = sps->sps_strong_intra_smoothing_enable_flag, + .sign_data_hiding_enabled_flag = pps->sign_data_hiding_flag, + .constrained_intra_pred_flag = pps->constrained_intra_pred_flag, + .cu_qp_delta_enabled_flag = pps->cu_qp_delta_enabled_flag, + .weighted_pred_flag = pps->weighted_pred_flag, + .weighted_bipred_flag = pps->weighted_bipred_flag, + .transquant_bypass_enabled_flag = pps->transquant_bypass_enable_flag, + .entropy_coding_sync_enabled_flag = pps->entropy_coding_sync_enabled_flag, + .pps_loop_filter_across_slices_enabled_flag = pps->seq_loop_filter_across_slices_enabled_flag, + .loop_filter_across_tiles_enabled_flag = pps->loop_filter_across_tiles_enabled_flag, + .pcm_loop_filter_disabled_flag = sps->pcm.loop_filter_disable_flag, + }, + .slice_parsing_fields.bits = { + .lists_modification_present_flag = pps->lists_modification_present_flag, + .long_term_ref_pics_present_flag = sps->long_term_ref_pics_present_flag, + .sps_temporal_mvp_enabled_flag = sps->sps_temporal_mvp_enabled_flag, + .cabac_init_present_flag = pps->cabac_init_present_flag, + .output_flag_present_flag = pps->output_flag_present_flag, + .dependent_slice_segments_enabled_flag = pps->dependent_slice_segments_enabled_flag, + .pps_slice_chroma_qp_offsets_present_flag = pps->pic_slice_level_chroma_qp_offsets_present_flag, + .sample_adaptive_offset_enabled_flag = sps->sao_enabled, + .deblocking_filter_override_enabled_flag = pps->deblocking_filter_override_enabled_flag, + .pps_disable_deblocking_filter_flag = pps->disable_dbf, + .slice_segment_header_extension_present_flag = pps->slice_header_extension_present_flag, + .RapPicFlag = IS_IRAP(h), + .IdrPicFlag = IS_IDR(h), + .IntraPicFlag = IS_IRAP(h), + }, + }; + + fill_vaapi_pic(&pic->pic_param.CurrPic, h->ref, 0); + fill_vaapi_reference_frames(h, &pic->pic_param); + + if (pps->tiles_enabled_flag) { + pic->pic_param.num_tile_columns_minus1 = pps->num_tile_columns - 1; + pic->pic_param.num_tile_rows_minus1 = pps->num_tile_rows - 1; + + for (i = 0; i < pps->num_tile_columns; i++) + pic->pic_param.column_width_minus1[i] = pps->column_width[i] - 1; + + for (i = 0; i < pps->num_tile_rows; i++) + pic->pic_param.row_height_minus1[i] = pps->row_height[i] - 1; + } + + if (h->sh.short_term_ref_pic_set_sps_flag == 0 && h->sh.short_term_rps) { + pic->pic_param.st_rps_bits = h->sh.short_term_ref_pic_set_size; + } else { + pic->pic_param.st_rps_bits = 0; + } + + err = ff_vaapi_decode_make_param_buffer(avctx, &pic->pic, + VAPictureParameterBufferType, + &pic->pic_param, sizeof(pic->pic_param)); + if (err < 0) + goto fail; + + if (pps->scaling_list_data_present_flag) + scaling_list = &pps->scaling_list; + else if (sps->scaling_list_enable_flag) + scaling_list = &sps->scaling_list; + + if (scaling_list) { + VAIQMatrixBufferHEVC iq_matrix; + int j; + + for (i = 0; i < 6; i++) { + for (j = 0; j < 16; j++) + iq_matrix.ScalingList4x4[i][j] = scaling_list->sl[0][i][j]; + for (j = 0; j < 64; j++) { + iq_matrix.ScalingList8x8[i][j] = scaling_list->sl[1][i][j]; + iq_matrix.ScalingList16x16[i][j] = scaling_list->sl[2][i][j]; + if (i < 2) + iq_matrix.ScalingList32x32[i][j] = scaling_list->sl[3][i][j]; + } + iq_matrix.ScalingListDC16x16[i] = scaling_list->sl_dc[0][i]; + if (i < 2) + iq_matrix.ScalingListDC32x32[i] = scaling_list->sl_dc[1][i]; + } + + err = ff_vaapi_decode_make_param_buffer(avctx, &pic->pic, + VAIQMatrixBufferType, + &iq_matrix, sizeof(iq_matrix)); + if (err < 0) + goto fail; + } + + return 0; + +fail: + ff_vaapi_decode_cancel(avctx, &pic->pic); + return err; +} + +static int vaapi_hevc_end_frame(AVCodecContext *avctx) +{ + const HEVCContext *h = avctx->priv_data; + VAAPIDecodePictureHEVC *pic = h->ref->hwaccel_picture_private; + int ret; + + if (pic->last_size) { + pic->last_slice_param.LongSliceFlags.fields.LastSliceOfPic = 1; + ret = ff_vaapi_decode_make_slice_buffer(avctx, &pic->pic, + &pic->last_slice_param, sizeof(pic->last_slice_param), + pic->last_buffer, pic->last_size); + if (ret < 0) + goto fail; + } + + + ret = ff_vaapi_decode_issue(avctx, &pic->pic); + if (ret < 0) + goto fail; + + return 0; +fail: + ff_vaapi_decode_cancel(avctx, &pic->pic); + return ret; +} + +static void fill_pred_weight_table(const HEVCContext *h, + const SliceHeader *sh, + VASliceParameterBufferHEVC *slice_param) +{ + int i; + + memset(slice_param->delta_luma_weight_l0, 0, sizeof(slice_param->delta_luma_weight_l0)); + memset(slice_param->delta_luma_weight_l1, 0, sizeof(slice_param->delta_luma_weight_l1)); + memset(slice_param->luma_offset_l0, 0, sizeof(slice_param->luma_offset_l0)); + memset(slice_param->luma_offset_l1, 0, sizeof(slice_param->luma_offset_l1)); + memset(slice_param->delta_chroma_weight_l0, 0, sizeof(slice_param->delta_chroma_weight_l0)); + memset(slice_param->delta_chroma_weight_l1, 0, sizeof(slice_param->delta_chroma_weight_l1)); + memset(slice_param->ChromaOffsetL0, 0, sizeof(slice_param->ChromaOffsetL0)); + memset(slice_param->ChromaOffsetL1, 0, sizeof(slice_param->ChromaOffsetL1)); + + slice_param->delta_chroma_log2_weight_denom = 0; + slice_param->luma_log2_weight_denom = 0; + + if (sh->slice_type == HEVC_SLICE_I || + (sh->slice_type == HEVC_SLICE_P && !h->ps.pps->weighted_pred_flag) || + (sh->slice_type == HEVC_SLICE_B && !h->ps.pps->weighted_bipred_flag)) + return; + + slice_param->luma_log2_weight_denom = sh->luma_log2_weight_denom; + + if (h->ps.sps->chroma_format_idc) { + slice_param->delta_chroma_log2_weight_denom = sh->chroma_log2_weight_denom - sh->luma_log2_weight_denom; + } + + for (i = 0; i < 15 && i < sh->nb_refs[L0]; i++) { + slice_param->delta_luma_weight_l0[i] = sh->luma_weight_l0[i] - (1 << sh->luma_log2_weight_denom); + slice_param->luma_offset_l0[i] = sh->luma_offset_l0[i]; + slice_param->delta_chroma_weight_l0[i][0] = sh->chroma_weight_l0[i][0] - (1 << sh->chroma_log2_weight_denom); + slice_param->delta_chroma_weight_l0[i][1] = sh->chroma_weight_l0[i][1] - (1 << sh->chroma_log2_weight_denom); + slice_param->ChromaOffsetL0[i][0] = sh->chroma_offset_l0[i][0]; + slice_param->ChromaOffsetL0[i][1] = sh->chroma_offset_l0[i][1]; + } + + if (sh->slice_type == HEVC_SLICE_B) { + for (i = 0; i < 15 && i < sh->nb_refs[L1]; i++) { + slice_param->delta_luma_weight_l1[i] = sh->luma_weight_l1[i] - (1 << sh->luma_log2_weight_denom); + slice_param->luma_offset_l1[i] = sh->luma_offset_l1[i]; + slice_param->delta_chroma_weight_l1[i][0] = sh->chroma_weight_l1[i][0] - (1 << sh->chroma_log2_weight_denom); + slice_param->delta_chroma_weight_l1[i][1] = sh->chroma_weight_l1[i][1] - (1 << sh->chroma_log2_weight_denom); + slice_param->ChromaOffsetL1[i][0] = sh->chroma_offset_l1[i][0]; + slice_param->ChromaOffsetL1[i][1] = sh->chroma_offset_l1[i][1]; + } + } +} + +static uint8_t get_ref_pic_index(const HEVCContext *h, const HEVCFrame *frame) +{ + VAAPIDecodePictureHEVC *pic = h->ref->hwaccel_picture_private; + VAPictureParameterBufferHEVC *pp = &pic->pic_param; + uint8_t i; + + if (!frame) + return 0xff; + + for (i = 0; i < FF_ARRAY_ELEMS(pp->ReferenceFrames); i++) { + VASurfaceID pid = pp->ReferenceFrames[i].picture_id; + int poc = pp->ReferenceFrames[i].pic_order_cnt; + if (pid != VA_INVALID_ID && pid == ff_vaapi_get_surface_id(frame->frame) && poc == frame->poc) + return i; + } + + return 0xff; +} + +static int vaapi_hevc_decode_slice(AVCodecContext *avctx, + const uint8_t *buffer, + uint32_t size) +{ + const HEVCContext *h = avctx->priv_data; + const SliceHeader *sh = &h->sh; + VAAPIDecodePictureHEVC *pic = h->ref->hwaccel_picture_private; + + int nb_list = (sh->slice_type == HEVC_SLICE_B) ? + 2 : (sh->slice_type == HEVC_SLICE_I ? 0 : 1); + + int err, i, list_idx; + + if (!sh->first_slice_in_pic_flag) { + err = ff_vaapi_decode_make_slice_buffer(avctx, &pic->pic, + &pic->last_slice_param, sizeof(pic->last_slice_param), + pic->last_buffer, pic->last_size); + pic->last_buffer = NULL; + pic->last_size = 0; + if (err) { + ff_vaapi_decode_cancel(avctx, &pic->pic); + return err; + } + } + + pic->last_slice_param = (VASliceParameterBufferHEVC) { + .slice_data_size = size, + .slice_data_offset = 0, + .slice_data_flag = VA_SLICE_DATA_FLAG_ALL, + /* Add 1 to the bits count here to account for the byte_alignment bit, which + * always is at least one bit and not accounted for otherwise. */ + .slice_data_byte_offset = (get_bits_count(&h->HEVClc.gb) + 1 + 7) / 8, + .slice_segment_address = sh->slice_segment_addr, + .slice_qp_delta = sh->slice_qp_delta, + .slice_cb_qp_offset = sh->slice_cb_qp_offset, + .slice_cr_qp_offset = sh->slice_cr_qp_offset, + .slice_beta_offset_div2 = sh->beta_offset / 2, + .slice_tc_offset_div2 = sh->tc_offset / 2, + .collocated_ref_idx = sh->slice_temporal_mvp_enabled_flag ? sh->collocated_ref_idx : 0xFF, + .five_minus_max_num_merge_cand = sh->slice_type == HEVC_SLICE_I ? 0 : 5 - sh->max_num_merge_cand, + .num_ref_idx_l0_active_minus1 = sh->nb_refs[L0] ? sh->nb_refs[L0] - 1 : 0, + .num_ref_idx_l1_active_minus1 = sh->nb_refs[L1] ? sh->nb_refs[L1] - 1 : 0, + + .LongSliceFlags.fields = { + .dependent_slice_segment_flag = sh->dependent_slice_segment_flag, + .slice_type = sh->slice_type, + .color_plane_id = sh->colour_plane_id, + .mvd_l1_zero_flag = sh->mvd_l1_zero_flag, + .cabac_init_flag = sh->cabac_init_flag, + .slice_temporal_mvp_enabled_flag = sh->slice_temporal_mvp_enabled_flag, + .slice_deblocking_filter_disabled_flag = sh->disable_deblocking_filter_flag, + .collocated_from_l0_flag = sh->collocated_list == L0 ? 1 : 0, + .slice_loop_filter_across_slices_enabled_flag = sh->slice_loop_filter_across_slices_enabled_flag, + .slice_sao_luma_flag = sh->slice_sample_adaptive_offset_flag[0], + .slice_sao_chroma_flag = sh->slice_sample_adaptive_offset_flag[1], + }, + }; + + memset(pic->last_slice_param.RefPicList, 0xFF, sizeof(pic->last_slice_param.RefPicList)); + + for (list_idx = 0; list_idx < nb_list; list_idx++) { + RefPicList *rpl = &h->ref->refPicList[list_idx]; + + for (i = 0; i < rpl->nb_refs; i++) + pic->last_slice_param.RefPicList[list_idx][i] = get_ref_pic_index(h, rpl->ref[i]); + } + + fill_pred_weight_table(h, sh, &pic->last_slice_param); + + pic->last_buffer = buffer; + pic->last_size = size; + + return 0; +} + +AVHWAccel ff_hevc_vaapi_hwaccel = { + .name = "hevc_vaapi", + .type = AVMEDIA_TYPE_VIDEO, + .id = AV_CODEC_ID_HEVC, + .pix_fmt = AV_PIX_FMT_VAAPI, + .start_frame = vaapi_hevc_start_frame, + .end_frame = vaapi_hevc_end_frame, + .decode_slice = vaapi_hevc_decode_slice, + .frame_priv_data_size = sizeof(VAAPIDecodePictureHEVC), + .init = ff_vaapi_decode_init, + .uninit = ff_vaapi_decode_uninit, + .priv_data_size = sizeof(VAAPIDecodeContext), + .caps_internal = HWACCEL_CAP_ASYNC_SAFE, +}; |