/* * 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 #include #include #include "libavutil/avassert.h" #include "libavutil/common.h" #include "libavutil/internal.h" #include "libavutil/opt.h" #include "avcodec.h" #include "cbs.h" #include "cbs_h264.h" #include "h264.h" #include "h264_sei.h" #include "internal.h" #include "vaapi_encode.h" enum { SEI_TIMING = 0x01, SEI_IDENTIFIER = 0x02, SEI_RECOVERY_POINT = 0x04, }; // Random (version 4) ISO 11578 UUID. static const uint8_t vaapi_encode_h264_sei_identifier_uuid[16] = { 0x59, 0x94, 0x8b, 0x28, 0x11, 0xec, 0x45, 0xaf, 0x96, 0x75, 0x19, 0xd4, 0x1f, 0xea, 0xa9, 0x4d, }; typedef struct VAAPIEncodeH264Context { int mb_width; int mb_height; int fixed_qp_idr; int fixed_qp_p; int fixed_qp_b; H264RawAUD aud; H264RawSPS sps; H264RawPPS pps; H264RawSEI sei; H264RawSlice slice; H264RawSEIBufferingPeriod buffering_period; H264RawSEIPicTiming pic_timing; H264RawSEIRecoveryPoint recovery_point; H264RawSEIUserDataUnregistered identifier; char *identifier_string; int frame_num; int pic_order_cnt; int next_frame_num; int64_t last_idr_frame; int64_t idr_pic_count; int primary_pic_type; int slice_type; int cpb_delay; int dpb_delay; CodedBitstreamContext cbc; CodedBitstreamFragment current_access_unit; int aud_needed; int sei_needed; } VAAPIEncodeH264Context; typedef struct VAAPIEncodeH264Options { int qp; int quality; int low_power; int aud; int sei; } VAAPIEncodeH264Options; static int vaapi_encode_h264_write_access_unit(AVCodecContext *avctx, char *data, size_t *data_len, CodedBitstreamFragment *au) { VAAPIEncodeContext *ctx = avctx->priv_data; VAAPIEncodeH264Context *priv = ctx->priv_data; int err; err = ff_cbs_write_fragment_data(&priv->cbc, au); if (err < 0) { av_log(avctx, AV_LOG_ERROR, "Failed to write packed header.\n"); return err; } if (*data_len < 8 * au->data_size - au->data_bit_padding) { av_log(avctx, AV_LOG_ERROR, "Access unit too large: " "%zu < %zu.\n", *data_len, 8 * au->data_size - au->data_bit_padding); return AVERROR(ENOSPC); } memcpy(data, au->data, au->data_size); *data_len = 8 * au->data_size - au->data_bit_padding; return 0; } static int vaapi_encode_h264_add_nal(AVCodecContext *avctx, CodedBitstreamFragment *au, void *nal_unit) { VAAPIEncodeContext *ctx = avctx->priv_data; VAAPIEncodeH264Context *priv = ctx->priv_data; H264RawNALUnitHeader *header = nal_unit; int err; err = ff_cbs_insert_unit_content(&priv->cbc, au, -1, header->nal_unit_type, nal_unit); if (err < 0) { av_log(avctx, AV_LOG_ERROR, "Failed to add NAL unit: " "type = %d.\n", header->nal_unit_type); return err; } return 0; } static int vaapi_encode_h264_write_sequence_header(AVCodecContext *avctx, char *data, size_t *data_len) { VAAPIEncodeContext *ctx = avctx->priv_data; VAAPIEncodeH264Context *priv = ctx->priv_data; CodedBitstreamFragment *au = &priv->current_access_unit; int err; if (priv->aud_needed) { err = vaapi_encode_h264_add_nal(avctx, au, &priv->aud); if (err < 0) goto fail; priv->aud_needed = 0; } err = vaapi_encode_h264_add_nal(avctx, au, &priv->sps); if (err < 0) goto fail; err = vaapi_encode_h264_add_nal(avctx, au, &priv->pps); if (err < 0) goto fail; err = vaapi_encode_h264_write_access_unit(avctx, data, data_len, au); fail: ff_cbs_fragment_uninit(&priv->cbc, au); return err; } static int vaapi_encode_h264_write_slice_header(AVCodecContext *avctx, VAAPIEncodePicture *pic, VAAPIEncodeSlice *slice, char *data, size_t *data_len) { VAAPIEncodeContext *ctx = avctx->priv_data; VAAPIEncodeH264Context *priv = ctx->priv_data; CodedBitstreamFragment *au = &priv->current_access_unit; int err; if (priv->aud_needed) { err = vaapi_encode_h264_add_nal(avctx, au, &priv->aud); if (err < 0) goto fail; priv->aud_needed = 0; } err = vaapi_encode_h264_add_nal(avctx, au, &priv->slice); if (err < 0) goto fail; err = vaapi_encode_h264_write_access_unit(avctx, data, data_len, au); fail: ff_cbs_fragment_uninit(&priv->cbc, au); return err; } static int vaapi_encode_h264_write_extra_header(AVCodecContext *avctx, VAAPIEncodePicture *pic, int index, int *type, char *data, size_t *data_len) { VAAPIEncodeContext *ctx = avctx->priv_data; VAAPIEncodeH264Context *priv = ctx->priv_data; VAAPIEncodeH264Options *opt = ctx->codec_options; CodedBitstreamFragment *au = &priv->current_access_unit; int err, i; if (priv->sei_needed) { if (priv->aud_needed) { vaapi_encode_h264_add_nal(avctx, au, &priv->aud); priv->aud_needed = 0; } memset(&priv->sei, 0, sizeof(priv->sei)); priv->sei.nal_unit_header.nal_unit_type = H264_NAL_SEI; i = 0; if (pic->encode_order == 0 && opt->sei & SEI_IDENTIFIER) { priv->sei.payload[i].payload_type = H264_SEI_TYPE_USER_DATA_UNREGISTERED; priv->sei.payload[i].payload.user_data_unregistered = priv->identifier; ++i; } if (opt->sei & SEI_TIMING) { if (pic->type == PICTURE_TYPE_IDR) { priv->sei.payload[i].payload_type = H264_SEI_TYPE_BUFFERING_PERIOD; priv->sei.payload[i].payload.buffering_period = priv->buffering_period; ++i; } priv->sei.payload[i].payload_type = H264_SEI_TYPE_PIC_TIMING; priv->sei.payload[i].payload.pic_timing = priv->pic_timing; ++i; } if (opt->sei & SEI_RECOVERY_POINT && pic->type == PICTURE_TYPE_I) { priv->sei.payload[i].payload_type = H264_SEI_TYPE_RECOVERY_POINT; priv->sei.payload[i].payload.recovery_point = priv->recovery_point; ++i; } priv->sei.payload_count = i; av_assert0(priv->sei.payload_count > 0); err = vaapi_encode_h264_add_nal(avctx, au, &priv->sei); if (err < 0) goto fail; priv->sei_needed = 0; err = vaapi_encode_h264_write_access_unit(avctx, data, data_len, au); if (err < 0) goto fail; ff_cbs_fragment_uninit(&priv->cbc, au); *type = VAEncPackedHeaderH264_SEI; return 0; } else { return AVERROR_EOF; } fail: ff_cbs_fragment_uninit(&priv->cbc, au); return err; } static int vaapi_encode_h264_init_sequence_params(AVCodecContext *avctx) { VAAPIEncodeContext *ctx = avctx->priv_data; VAAPIEncodeH264Context *priv = ctx->priv_data; VAAPIEncodeH264Options *opt = ctx->codec_options; H264RawSPS *sps = &priv->sps; H264RawPPS *pps = &priv->pps; VAEncSequenceParameterBufferH264 *vseq = ctx->codec_sequence_params; VAEncPictureParameterBufferH264 *vpic = ctx->codec_picture_params; memset(&priv->current_access_unit, 0, sizeof(priv->current_access_unit)); memset(sps, 0, sizeof(*sps)); memset(pps, 0, sizeof(*pps)); sps->nal_unit_header.nal_ref_idc = 3; sps->nal_unit_header.nal_unit_type = H264_NAL_SPS; sps->profile_idc = avctx->profile & 0xff; sps->constraint_set1_flag = !!(avctx->profile & FF_PROFILE_H264_CONSTRAINED); sps->constraint_set3_flag = !!(avctx->profile & FF_PROFILE_H264_INTRA); sps->level_idc = avctx->level; sps->seq_parameter_set_id = 0; sps->chroma_format_idc = 1; sps->log2_max_frame_num_minus4 = 4; sps->pic_order_cnt_type = 0; sps->log2_max_pic_order_cnt_lsb_minus4 = av_clip(av_log2(ctx->b_per_p + 1) - 2, 0, 12); sps->max_num_ref_frames = (avctx->profile & FF_PROFILE_H264_INTRA) ? 0 : 1 + (ctx->b_per_p > 0); sps->pic_width_in_mbs_minus1 = priv->mb_width - 1; sps->pic_height_in_map_units_minus1 = priv->mb_height - 1; sps->frame_mbs_only_flag = 1; sps->direct_8x8_inference_flag = 1; if (avctx->width != 16 * priv->mb_width || avctx->height != 16 * priv->mb_height) { sps->frame_cropping_flag = 1; sps->frame_crop_left_offset = 0; sps->frame_crop_right_offset = (16 * priv->mb_width - avctx->width) / 2; sps->frame_crop_top_offset = 0; sps->frame_crop_bottom_offset = (16 * priv->mb_height - avctx->height) / 2; } else { sps->frame_cropping_flag = 0; } sps->vui_parameters_present_flag = 1; if (avctx->sample_aspect_ratio.num != 0 && avctx->sample_aspect_ratio.den != 0) { static const AVRational sar_idc[] = { { 0, 0 }, { 1, 1 }, { 12, 11 }, { 10, 11 }, { 16, 11 }, { 40, 33 }, { 24, 11 }, { 20, 11 }, { 32, 11 }, { 80, 33 }, { 18, 11 }, { 15, 11 }, { 64, 33 }, { 160, 99 }, { 4, 3 }, { 3, 2 }, { 2, 1 }, }; int i; for (i = 0; i < FF_ARRAY_ELEMS(sar_idc); i++) { if (avctx->sample_aspect_ratio.num == sar_idc[i].num && avctx->sample_aspect_ratio.den == sar_idc[i].den) { sps->vui.aspect_ratio_idc = i; break; } } if (i >= FF_ARRAY_ELEMS(sar_idc)) { sps->vui.aspect_ratio_idc = 255; sps->vui.sar_width = avctx->sample_aspect_ratio.num; sps->vui.sar_height = avctx->sample_aspect_ratio.den; } sps->vui.aspect_ratio_info_present_flag = 1; } if (avctx->color_range != AVCOL_RANGE_UNSPECIFIED || avctx->color_primaries != AVCOL_PRI_UNSPECIFIED || avctx->color_trc != AVCOL_TRC_UNSPECIFIED || avctx->colorspace != AVCOL_SPC_UNSPECIFIED) { sps->vui.video_signal_type_present_flag = 1; sps->vui.video_format = 5; // Unspecified. sps->vui.video_full_range_flag = avctx->color_range == AVCOL_RANGE_JPEG; if (avctx->color_primaries != AVCOL_PRI_UNSPECIFIED || avctx->color_trc != AVCOL_TRC_UNSPECIFIED || avctx->colorspace != AVCOL_SPC_UNSPECIFIED) { sps->vui.colour_description_present_flag = 1; sps->vui.colour_primaries = avctx->color_primaries; sps->vui.transfer_characteristics = avctx->color_trc; sps->vui.matrix_coefficients = avctx->colorspace; } } else { sps->vui.video_format = 5; sps->vui.video_full_range_flag = 0; sps->vui.colour_primaries = avctx->color_primaries; sps->vui.transfer_characteristics = avctx->color_trc; sps->vui.matrix_coefficients = avctx->colorspace; } if (avctx->chroma_sample_location != AVCHROMA_LOC_UNSPECIFIED) { sps->vui.chroma_loc_info_present_flag = 1; sps->vui.chroma_sample_loc_type_top_field = sps->vui.chroma_sample_loc_type_bottom_field = avctx->chroma_sample_location - 1; } sps->vui.timing_info_present_flag = 1; if (avctx->framerate.num > 0 && avctx->framerate.den > 0) { sps->vui.num_units_in_tick = avctx->framerate.den; sps->vui.time_scale = 2 * avctx->framerate.num; sps->vui.fixed_frame_rate_flag = 1; } else { sps->vui.num_units_in_tick = avctx->time_base.num; sps->vui.time_scale = 2 * avctx->time_base.den; sps->vui.fixed_frame_rate_flag = 0; } if (opt->sei & SEI_TIMING) { H264RawHRD *hrd = &sps->vui.nal_hrd_parameters; sps->vui.nal_hrd_parameters_present_flag = 1; hrd->cpb_cnt_minus1 = 0; // Try to scale these to a sensible range so that the // golomb encode of the value is not overlong. hrd->bit_rate_scale = av_clip_uintp2(av_log2(avctx->bit_rate) - 15 - 6, 4); hrd->bit_rate_value_minus1[0] = (avctx->bit_rate >> hrd->bit_rate_scale + 6) - 1; hrd->cpb_size_scale = av_clip_uintp2(av_log2(ctx->hrd_params.hrd.buffer_size) - 15 - 4, 4); hrd->cpb_size_value_minus1[0] = (ctx->hrd_params.hrd.buffer_size >> hrd->cpb_size_scale + 4) - 1; // CBR mode as defined for the HRD cannot be achieved without filler // data, so this flag cannot be set even with VAAPI CBR modes. hrd->cbr_flag[0] = 0; hrd->initial_cpb_removal_delay_length_minus1 = 23; hrd->cpb_removal_delay_length_minus1 = 23; hrd->dpb_output_delay_length_minus1 = 7; hrd->time_offset_length = 0; priv->buffering_period.seq_parameter_set_id = sps->seq_parameter_set_id; // This calculation can easily overflow 32 bits. priv->buffering_period.nal.initial_cpb_removal_delay[0] = 90000 * (uint64_t)ctx->hrd_params.hrd.initial_buffer_fullness / ctx->hrd_params.hrd.buffer_size; priv->buffering_period.nal.initial_cpb_removal_delay_offset[0] = 0; } else { sps->vui.nal_hrd_parameters_present_flag = 0; sps->vui.low_delay_hrd_flag = 1 - sps->vui.fixed_frame_rate_flag; } sps->vui.bitstream_restriction_flag = 1; sps->vui.motion_vectors_over_pic_boundaries_flag = 1; sps->vui.log2_max_mv_length_horizontal = 16; sps->vui.log2_max_mv_length_vertical = 16; sps->vui.max_num_reorder_frames = (ctx->b_per_p > 0); sps->vui.max_dec_frame_buffering = vseq->max_num_ref_frames; pps->nal_unit_header.nal_ref_idc = 3; pps->nal_unit_header.nal_unit_type = H264_NAL_PPS; pps->pic_parameter_set_id = 0; pps->seq_parameter_set_id = 0; pps->entropy_coding_mode_flag = !(sps->profile_idc == FF_PROFILE_H264_BASELINE || sps->profile_idc == FF_PROFILE_H264_EXTENDED || sps->profile_idc == FF_PROFILE_H264_CAVLC_444); pps->num_ref_idx_l0_default_active_minus1 = 0; pps->num_ref_idx_l1_default_active_minus1 = 0; pps->pic_init_qp_minus26 = priv->fixed_qp_idr - 26; if (sps->profile_idc == FF_PROFILE_H264_BASELINE || sps->profile_idc == FF_PROFILE_H264_EXTENDED || sps->profile_idc == FF_PROFILE_H264_MAIN) { pps->more_rbsp_data = 0; } else { pps->more_rbsp_data = 1; pps->transform_8x8_mode_flag = 1; } *vseq = (VAEncSequenceParameterBufferH264) { .seq_parameter_set_id = sps->seq_parameter_set_id, .level_idc = sps->level_idc, .intra_period = avctx->gop_size, .intra_idr_period = avctx->gop_size, .ip_period = ctx->b_per_p + 1, .bits_per_second = avctx->bit_rate, .max_num_ref_frames = sps->max_num_ref_frames, .picture_width_in_mbs = sps->pic_width_in_mbs_minus1 + 1, .picture_height_in_mbs = sps->pic_height_in_map_units_minus1 + 1, .seq_fields.bits = { .chroma_format_idc = sps->chroma_format_idc, .frame_mbs_only_flag = sps->frame_mbs_only_flag, .mb_adaptive_frame_field_flag = sps->mb_adaptive_frame_field_flag, .seq_scaling_matrix_present_flag = sps->seq_scaling_matrix_present_flag, .direct_8x8_inference_flag = sps->direct_8x8_inference_flag, .log2_max_frame_num_minus4 = sps->log2_max_frame_num_minus4, .pic_order_cnt_type = sps->pic_order_cnt_type, .log2_max_pic_order_cnt_lsb_minus4 = sps->log2_max_pic_order_cnt_lsb_minus4, .delta_pic_order_always_zero_flag = sps->delta_pic_order_always_zero_flag, }, .bit_depth_luma_minus8 = sps->bit_depth_luma_minus8, .bit_depth_chroma_minus8 = sps->bit_depth_chroma_minus8, .frame_cropping_flag = sps->frame_cropping_flag, .frame_crop_left_offset = sps->frame_crop_left_offset, .frame_crop_right_offset = sps->frame_crop_right_offset, .frame_crop_top_offset = sps->frame_crop_top_offset, .frame_crop_bottom_offset = sps->frame_crop_bottom_offset, .vui_parameters_present_flag = sps->vui_parameters_present_flag, .vui_fields.bits = { .aspect_ratio_info_present_flag = sps->vui.aspect_ratio_info_present_flag, .timing_info_present_flag = sps->vui.timing_info_present_flag, .bitstream_restriction_flag = sps->vui.bitstream_restriction_flag, .log2_max_mv_length_horizontal = sps->vui.log2_max_mv_length_horizontal, .log2_max_mv_length_vertical = sps->vui.log2_max_mv_length_vertical, }, .aspect_ratio_idc = sps->vui.aspect_ratio_idc, .sar_width = sps->vui.sar_width, .sar_height = sps->vui.sar_height, .num_units_in_tick = sps->vui.num_units_in_tick, .time_scale = sps->vui.time_scale, }; *vpic = (VAEncPictureParameterBufferH264) { .CurrPic = { .picture_id = VA_INVALID_ID, .flags = VA_PICTURE_H264_INVALID, }, .coded_buf = VA_INVALID_ID, .pic_parameter_set_id = pps->pic_parameter_set_id, .seq_parameter_set_id = pps->seq_parameter_set_id, .pic_init_qp = pps->pic_init_qp_minus26 + 26, .num_ref_idx_l0_active_minus1 = pps->num_ref_idx_l0_default_active_minus1, .num_ref_idx_l1_active_minus1 = pps->num_ref_idx_l1_default_active_minus1, .chroma_qp_index_offset = pps->chroma_qp_index_offset, .second_chroma_qp_index_offset = pps->second_chroma_qp_index_offset, .pic_fields.bits = { .entropy_coding_mode_flag = pps->entropy_coding_mode_flag, .weighted_pred_flag = pps->weighted_pred_flag, .weighted_bipred_idc = pps->weighted_bipred_idc, .constrained_intra_pred_flag = pps->constrained_intra_pred_flag, .transform_8x8_mode_flag = pps->transform_8x8_mode_flag, .deblocking_filter_control_present_flag = pps->deblocking_filter_control_present_flag, .redundant_pic_cnt_present_flag = pps->redundant_pic_cnt_present_flag, .pic_order_present_flag = pps->bottom_field_pic_order_in_frame_present_flag, .pic_scaling_matrix_present_flag = pps->pic_scaling_matrix_present_flag, }, }; return 0; } static int vaapi_encode_h264_init_picture_params(AVCodecContext *avctx, VAAPIEncodePicture *pic) { VAAPIEncodeContext *ctx = avctx->priv_data; VAAPIEncodeH264Context *priv = ctx->priv_data; VAAPIEncodeH264Options *opt = ctx->codec_options; H264RawSPS *sps = &priv->sps; VAEncPictureParameterBufferH264 *vpic = pic->codec_picture_params; int i; memset(&priv->current_access_unit, 0, sizeof(priv->current_access_unit)); if (pic->type == PICTURE_TYPE_IDR) { av_assert0(pic->display_order == pic->encode_order); priv->frame_num = 0; priv->next_frame_num = 1; priv->cpb_delay = 0; priv->last_idr_frame = pic->display_order; ++priv->idr_pic_count; priv->slice_type = 7; priv->primary_pic_type = 0; } else { priv->frame_num = priv->next_frame_num; if (pic->type != PICTURE_TYPE_B) { // Reference picture, so frame_num advances. priv->next_frame_num = (priv->frame_num + 1) & ((1 << (4 + sps->log2_max_frame_num_minus4)) - 1); } ++priv->cpb_delay; if (pic->type == PICTURE_TYPE_I) { priv->slice_type = 7; priv->primary_pic_type = 0; } else if (pic->type == PICTURE_TYPE_P) { priv->slice_type = 5; priv->primary_pic_type = 1; } else { priv->slice_type = 6; priv->primary_pic_type = 2; } } priv->pic_order_cnt = pic->display_order - priv->last_idr_frame; priv->dpb_delay = pic->display_order - pic->encode_order + 1; if (opt->aud) { priv->aud_needed = 1; priv->aud.nal_unit_header.nal_unit_type = H264_NAL_AUD; priv->aud.primary_pic_type = priv->primary_pic_type; } else { priv->aud_needed = 0; } if (opt->sei & SEI_IDENTIFIER && pic->encode_order == 0) priv->sei_needed = 1; if (opt->sei & SEI_TIMING) { memset(&priv->pic_timing, 0, sizeof(priv->pic_timing)); priv->pic_timing.cpb_removal_delay = 2 * priv->cpb_delay; priv->pic_timing.dpb_output_delay = 2 * priv->dpb_delay; priv->sei_needed = 1; } if (opt->sei & SEI_RECOVERY_POINT && pic->type == PICTURE_TYPE_I) { priv->recovery_point.recovery_frame_cnt = 0; priv->recovery_point.exact_match_flag = 1; priv->recovery_point.broken_link_flag = ctx->b_per_p > 0; priv->sei_needed = 1; } vpic->CurrPic = (VAPictureH264) { .picture_id = pic->recon_surface, .frame_idx = priv->frame_num, .flags = 0, .TopFieldOrderCnt = priv->pic_order_cnt, .BottomFieldOrderCnt = priv->pic_order_cnt, }; for (i = 0; i < pic->nb_refs; i++) { VAAPIEncodePicture *ref = pic->refs[i]; unsigned int frame_num = (ref->encode_order - priv->last_idr_frame) & ((1 << (4 + sps->log2_max_frame_num_minus4)) - 1); unsigned int pic_order_cnt = ref->display_order - priv->last_idr_frame; av_assert0(ref && ref->encode_order < pic->encode_order); vpic->ReferenceFrames[i] = (VAPictureH264) { .picture_id = ref->recon_surface, .frame_idx = frame_num, .flags = VA_PICTURE_H264_SHORT_TERM_REFERENCE, .TopFieldOrderCnt = pic_order_cnt, .BottomFieldOrderCnt = pic_order_cnt, }; } for (; i < FF_ARRAY_ELEMS(vpic->ReferenceFrames); i++) { vpic->ReferenceFrames[i] = (VAPictureH264) { .picture_id = VA_INVALID_ID, .flags = VA_PICTURE_H264_INVALID, }; } vpic->coded_buf = pic->output_buffer; vpic->frame_num = priv->frame_num; vpic->pic_fields.bits.idr_pic_flag = (pic->type == PICTURE_TYPE_IDR); vpic->pic_fields.bits.reference_pic_flag = (pic->type != PICTURE_TYPE_B); pic->nb_slices = 1; return 0; } static int vaapi_encode_h264_init_slice_params(AVCodecContext *avctx, VAAPIEncodePicture *pic, VAAPIEncodeSlice *slice) { VAAPIEncodeContext *ctx = avctx->priv_data; VAAPIEncodeH264Context *priv = ctx->priv_data; H264RawSPS *sps = &priv->sps; H264RawPPS *pps = &priv->pps; H264RawSliceHeader *sh = &priv->slice.header; VAEncPictureParameterBufferH264 *vpic = pic->codec_picture_params; VAEncSliceParameterBufferH264 *vslice = slice->codec_slice_params; int i; if (pic->type == PICTURE_TYPE_IDR) { sh->nal_unit_header.nal_unit_type = H264_NAL_IDR_SLICE; sh->nal_unit_header.nal_ref_idc = 3; } else { sh->nal_unit_header.nal_unit_type = H264_NAL_SLICE; sh->nal_unit_header.nal_ref_idc = pic->type != PICTURE_TYPE_B; } // Only one slice per frame. sh->first_mb_in_slice = 0; sh->slice_type = priv->slice_type; sh->pic_parameter_set_id = pps->pic_parameter_set_id; sh->frame_num = priv->frame_num; sh->idr_pic_id = priv->idr_pic_count; sh->pic_order_cnt_lsb = priv->pic_order_cnt & ((1 << (4 + sps->log2_max_pic_order_cnt_lsb_minus4)) - 1); sh->direct_spatial_mv_pred_flag = 1; if (pic->type == PICTURE_TYPE_B) sh->slice_qp_delta = priv->fixed_qp_b - (pps->pic_init_qp_minus26 + 26); else if (pic->type == PICTURE_TYPE_P) sh->slice_qp_delta = priv->fixed_qp_p - (pps->pic_init_qp_minus26 + 26); else sh->slice_qp_delta = priv->fixed_qp_idr - (pps->pic_init_qp_minus26 + 26); vslice->macroblock_address = sh->first_mb_in_slice; vslice->num_macroblocks = priv->mb_width * priv->mb_height; vslice->macroblock_info = VA_INVALID_ID; vslice->slice_type = sh->slice_type % 5; vslice->pic_parameter_set_id = sh->pic_parameter_set_id; vslice->idr_pic_id = sh->idr_pic_id; vslice->pic_order_cnt_lsb = sh->pic_order_cnt_lsb; vslice->direct_spatial_mv_pred_flag = sh->direct_spatial_mv_pred_flag; for (i = 0; i < FF_ARRAY_ELEMS(vslice->RefPicList0); i++) { vslice->RefPicList0[i].picture_id = VA_INVALID_ID; vslice->RefPicList0[i].flags = VA_PICTURE_H264_INVALID; vslice->RefPicList1[i].picture_id = VA_INVALID_ID; vslice->RefPicList1[i].flags = VA_PICTURE_H264_INVALID; } av_assert0(pic->nb_refs <= 2); if (pic->nb_refs >= 1) { // Backward reference for P- or B-frame. av_assert0(pic->type == PICTURE_TYPE_P || pic->type == PICTURE_TYPE_B); vslice->RefPicList0[0] = vpic->ReferenceFrames[0]; } if (pic->nb_refs >= 2) { // Forward reference for B-frame. av_assert0(pic->type == PICTURE_TYPE_B); vslice->RefPicList1[0] = vpic->ReferenceFrames[1]; } vslice->slice_qp_delta = sh->slice_qp_delta; return 0; } static av_cold int vaapi_encode_h264_configure(AVCodecContext *avctx) { VAAPIEncodeContext *ctx = avctx->priv_data; VAAPIEncodeH264Context *priv = ctx->priv_data; VAAPIEncodeH264Options *opt = ctx->codec_options; int err; err = ff_cbs_init(&priv->cbc, AV_CODEC_ID_H264, avctx); if (err < 0) return err; priv->mb_width = FFALIGN(avctx->width, 16) / 16; priv->mb_height = FFALIGN(avctx->height, 16) / 16; if (ctx->va_rc_mode == VA_RC_CQP) { priv->fixed_qp_p = opt->qp; if (avctx->i_quant_factor > 0.0) priv->fixed_qp_idr = (int)((priv->fixed_qp_p * avctx->i_quant_factor + avctx->i_quant_offset) + 0.5); else priv->fixed_qp_idr = priv->fixed_qp_p; if (avctx->b_quant_factor > 0.0) priv->fixed_qp_b = (int)((priv->fixed_qp_p * avctx->b_quant_factor + avctx->b_quant_offset) + 0.5); else priv->fixed_qp_b = priv->fixed_qp_p; opt->sei &= ~SEI_TIMING; av_log(avctx, AV_LOG_DEBUG, "Using fixed QP = " "%d / %d / %d for IDR- / P- / B-frames.\n", priv->fixed_qp_idr, priv->fixed_qp_p, priv->fixed_qp_b); } else if (ctx->va_rc_mode == VA_RC_CBR || ctx->va_rc_mode == VA_RC_VBR) { // These still need to be set for pic_init_qp/slice_qp_delta. priv->fixed_qp_idr = 26; priv->fixed_qp_p = 26; priv->fixed_qp_b = 26; av_log(avctx, AV_LOG_DEBUG, "Using %s-bitrate = %d bps.\n", ctx->va_rc_mode == VA_RC_CBR ? "constant" : "variable", avctx->bit_rate); } else { av_assert0(0 && "Invalid RC mode."); } if (avctx->compression_level == FF_COMPRESSION_DEFAULT) avctx->compression_level = opt->quality; if (opt->sei & SEI_IDENTIFIER) { const char *lavc = LIBAVCODEC_IDENT; const char *vaapi = VA_VERSION_S; const char *driver; int len; memcpy(priv->identifier.uuid_iso_iec_11578, vaapi_encode_h264_sei_identifier_uuid, sizeof(priv->identifier.uuid_iso_iec_11578)); driver = vaQueryVendorString(ctx->hwctx->display); if (!driver) driver = "unknown driver"; len = snprintf(NULL, 0, "%s / VAAPI %s / %s", lavc, vaapi, driver); if (len >= 0) { priv->identifier_string = av_malloc(len + 1); if (!priv->identifier_string) return AVERROR(ENOMEM); snprintf(priv->identifier_string, len + 1, "%s / VAAPI %s / %s", lavc, vaapi, driver); priv->identifier.data = priv->identifier_string; priv->identifier.data_length = len + 1; } } return 0; } static const VAAPIEncodeType vaapi_encode_type_h264 = { .priv_data_size = sizeof(VAAPIEncodeH264Context), .configure = &vaapi_encode_h264_configure, .sequence_params_size = sizeof(VAEncSequenceParameterBufferH264), .init_sequence_params = &vaapi_encode_h264_init_sequence_params, .picture_params_size = sizeof(VAEncPictureParameterBufferH264), .init_picture_params = &vaapi_encode_h264_init_picture_params, .slice_params_size = sizeof(VAEncSliceParameterBufferH264), .init_slice_params = &vaapi_encode_h264_init_slice_params, .sequence_header_type = VAEncPackedHeaderSequence, .write_sequence_header = &vaapi_encode_h264_write_sequence_header, .slice_header_type = VAEncPackedHeaderH264_Slice, .write_slice_header = &vaapi_encode_h264_write_slice_header, .write_extra_header = &vaapi_encode_h264_write_extra_header, }; static av_cold int vaapi_encode_h264_init(AVCodecContext *avctx) { VAAPIEncodeContext *ctx = avctx->priv_data; VAAPIEncodeH264Options *opt = (VAAPIEncodeH264Options*)ctx->codec_options_data; ctx->codec = &vaapi_encode_type_h264; switch (avctx->profile) { case FF_PROFILE_H264_BASELINE: av_log(avctx, AV_LOG_WARNING, "H.264 baseline profile is not " "supported, using constrained baseline profile instead.\n"); avctx->profile = FF_PROFILE_H264_CONSTRAINED_BASELINE; case FF_PROFILE_H264_CONSTRAINED_BASELINE: ctx->va_profile = VAProfileH264ConstrainedBaseline; break; case FF_PROFILE_H264_MAIN: ctx->va_profile = VAProfileH264Main; break; case FF_PROFILE_H264_EXTENDED: av_log(avctx, AV_LOG_ERROR, "H.264 extended profile " "is not supported.\n"); return AVERROR_PATCHWELCOME; case FF_PROFILE_UNKNOWN: case FF_PROFILE_H264_HIGH: ctx->va_profile = VAProfileH264High; break; case FF_PROFILE_H264_HIGH_10: case FF_PROFILE_H264_HIGH_10_INTRA: av_log(avctx, AV_LOG_ERROR, "H.264 10-bit profiles " "are not supported.\n"); return AVERROR_PATCHWELCOME; case FF_PROFILE_H264_HIGH_422: case FF_PROFILE_H264_HIGH_422_INTRA: case FF_PROFILE_H264_HIGH_444: case FF_PROFILE_H264_HIGH_444_PREDICTIVE: case FF_PROFILE_H264_HIGH_444_INTRA: case FF_PROFILE_H264_CAVLC_444: av_log(avctx, AV_LOG_ERROR, "H.264 non-4:2:0 profiles " "are not supported.\n"); return AVERROR_PATCHWELCOME; default: av_log(avctx, AV_LOG_ERROR, "Unknown H.264 profile %d.\n", avctx->profile); return AVERROR(EINVAL); } if (opt->low_power) { #if VA_CHECK_VERSION(0, 39, 2) ctx->va_entrypoint = VAEntrypointEncSliceLP; #else av_log(avctx, AV_LOG_ERROR, "Low-power encoding is not " "supported with this VAAPI version.\n"); return AVERROR(EINVAL); #endif } else { ctx->va_entrypoint = VAEntrypointEncSlice; } // Only 8-bit encode is supported. ctx->va_rt_format = VA_RT_FORMAT_YUV420; if (avctx->bit_rate > 0) { if (avctx->rc_max_rate == avctx->bit_rate) ctx->va_rc_mode = VA_RC_CBR; else ctx->va_rc_mode = VA_RC_VBR; } else ctx->va_rc_mode = VA_RC_CQP; ctx->va_packed_headers = VA_ENC_PACKED_HEADER_SEQUENCE | // SPS and PPS. VA_ENC_PACKED_HEADER_SLICE | // Slice headers. VA_ENC_PACKED_HEADER_MISC; // SEI. ctx->surface_width = FFALIGN(avctx->width, 16); ctx->surface_height = FFALIGN(avctx->height, 16); return ff_vaapi_encode_init(avctx); } static av_cold int vaapi_encode_h264_close(AVCodecContext *avctx) { VAAPIEncodeContext *ctx = avctx->priv_data; VAAPIEncodeH264Context *priv = ctx->priv_data; if (priv) { ff_cbs_close(&priv->cbc); av_freep(&priv->identifier_string); } return ff_vaapi_encode_close(avctx); } #define OFFSET(x) (offsetof(VAAPIEncodeContext, codec_options_data) + \ offsetof(VAAPIEncodeH264Options, x)) #define FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM) static const AVOption vaapi_encode_h264_options[] = { { "qp", "Constant QP (for P-frames; scaled by qfactor/qoffset for I/B)", OFFSET(qp), AV_OPT_TYPE_INT, { .i64 = 20 }, 0, 52, FLAGS }, { "quality", "Set encode quality (trades off against speed, higher is faster)", OFFSET(quality), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 8, FLAGS }, { "low_power", "Use low-power encoding mode (experimental: only supported " "on some platforms, does not support all features)", OFFSET(low_power), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, FLAGS }, { "aud", "Include AUD", OFFSET(aud), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, FLAGS }, { "sei", "Set SEI to include", OFFSET(sei), AV_OPT_TYPE_FLAGS, { .i64 = SEI_IDENTIFIER | SEI_TIMING | SEI_RECOVERY_POINT }, 0, INT_MAX, FLAGS, "sei" }, { "identifier", "Include encoder version identifier", 0, AV_OPT_TYPE_CONST, { .i64 = SEI_IDENTIFIER }, INT_MIN, INT_MAX, FLAGS, "sei" }, { "timing", "Include timing parameters (buffering_period and pic_timing)", 0, AV_OPT_TYPE_CONST, { .i64 = SEI_TIMING }, INT_MIN, INT_MAX, FLAGS, "sei" }, { "recovery_point", "Include recovery points where appropriate", 0, AV_OPT_TYPE_CONST, { .i64 = SEI_RECOVERY_POINT }, INT_MIN, INT_MAX, FLAGS, "sei" }, { NULL }, }; static const AVCodecDefault vaapi_encode_h264_defaults[] = { { "profile", "100" }, { "level", "51" }, { "b", "0" }, { "bf", "2" }, { "g", "120" }, { "i_qfactor", "1.0" }, { "i_qoffset", "0.0" }, { "b_qfactor", "1.2" }, { "b_qoffset", "0.0" }, { "qmin", "0" }, { NULL }, }; static const AVClass vaapi_encode_h264_class = { .class_name = "h264_vaapi", .item_name = av_default_item_name, .option = vaapi_encode_h264_options, .version = LIBAVUTIL_VERSION_INT, }; AVCodec ff_h264_vaapi_encoder = { .name = "h264_vaapi", .long_name = NULL_IF_CONFIG_SMALL("H.264/AVC (VAAPI)"), .type = AVMEDIA_TYPE_VIDEO, .id = AV_CODEC_ID_H264, .priv_data_size = (sizeof(VAAPIEncodeContext) + sizeof(VAAPIEncodeH264Options)), .init = &vaapi_encode_h264_init, .encode2 = &ff_vaapi_encode2, .close = &vaapi_encode_h264_close, .priv_class = &vaapi_encode_h264_class, .capabilities = AV_CODEC_CAP_DELAY, .defaults = vaapi_encode_h264_defaults, .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_VAAPI, AV_PIX_FMT_NONE, }, };