/* * This file is part of FFmpeg. * * FFmpeg 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. * * FFmpeg 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 FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include "libavutil/avassert.h" #include "libavutil/internal.h" #include "libavutil/opt.h" #include "libavutil/pixfmt.h" #include "avcodec.h" #include "h264.h" #include "h264_sei.h" #include "internal.h" #include "vaapi_encode.h" #include "vaapi_encode_h26x.h" enum { SLICE_TYPE_P = 0, SLICE_TYPE_B = 1, SLICE_TYPE_I = 2, SLICE_TYPE_SP = 3, SLICE_TYPE_SI = 4, }; // This structure contains all possibly-useful per-sequence syntax elements // which are not already contained in the various VAAPI structures. typedef struct VAAPIEncodeH264MiscSequenceParams { unsigned int profile_idc; char constraint_set0_flag; char constraint_set1_flag; char constraint_set2_flag; char constraint_set3_flag; char constraint_set4_flag; char constraint_set5_flag; char separate_colour_plane_flag; char qpprime_y_zero_transform_bypass_flag; char gaps_in_frame_num_allowed_flag; char delta_pic_order_always_zero_flag; char bottom_field_pic_order_in_frame_present_flag; unsigned int num_slice_groups_minus1; unsigned int slice_group_map_type; int pic_init_qs_minus26; char overscan_info_present_flag; char overscan_appropriate_flag; char video_signal_type_present_flag; unsigned int video_format; char video_full_range_flag; char colour_description_present_flag; unsigned int colour_primaries; unsigned int transfer_characteristics; unsigned int matrix_coefficients; char chroma_loc_info_present_flag; unsigned int chroma_sample_loc_type_top_field; unsigned int chroma_sample_loc_type_bottom_field; // Some timing elements are in VAEncSequenceParameterBufferH264. char fixed_frame_rate_flag; char nal_hrd_parameters_present_flag; char vcl_hrd_parameters_present_flag; char low_delay_hrd_flag; char pic_struct_present_flag; char bitstream_restriction_flag; unsigned int cpb_cnt_minus1; unsigned int bit_rate_scale; unsigned int cpb_size_scale; unsigned int bit_rate_value_minus1[32]; unsigned int cpb_size_value_minus1[32]; char cbr_flag[32]; unsigned int initial_cpb_removal_delay_length_minus1; unsigned int cpb_removal_delay_length_minus1; unsigned int dpb_output_delay_length_minus1; unsigned int time_offset_length; unsigned int initial_cpb_removal_delay; unsigned int initial_cpb_removal_delay_offset; unsigned int pic_struct; } VAAPIEncodeH264MiscSequenceParams; // This structure contains all possibly-useful per-slice syntax elements // which are not already contained in the various VAAPI structures. typedef struct VAAPIEncodeH264MiscSliceParams { unsigned int nal_unit_type; unsigned int nal_ref_idc; unsigned int colour_plane_id; char field_pic_flag; char bottom_field_flag; unsigned int redundant_pic_cnt; char sp_for_switch_flag; int slice_qs_delta; char ref_pic_list_modification_flag_l0; char ref_pic_list_modification_flag_l1; char no_output_of_prior_pics_flag; char long_term_reference_flag; char adaptive_ref_pic_marking_mode_flag; } VAAPIEncodeH264MiscSliceParams; typedef struct VAAPIEncodeH264Slice { VAAPIEncodeH264MiscSliceParams misc_slice_params; } VAAPIEncodeH264Slice; typedef struct VAAPIEncodeH264Context { VAAPIEncodeH264MiscSequenceParams misc_sequence_params; int mb_width; int mb_height; int fixed_qp_idr; int fixed_qp_p; int fixed_qp_b; int next_frame_num; int64_t idr_pic_count; int cpb_delay; int dpb_delay; // Rate control configuration. int send_timing_sei; #if VA_CHECK_VERSION(0, 36, 0) // Speed-quality tradeoff setting. struct { VAEncMiscParameterBuffer misc; VAEncMiscParameterBufferQualityLevel quality; } quality_params; #endif } VAAPIEncodeH264Context; typedef struct VAAPIEncodeH264Options { int qp; int quality; int low_power; } VAAPIEncodeH264Options; #define vseq_var(name) vseq->name, name #define vseq_field(name) vseq->seq_fields.bits.name, name #define vvui_field(name) vseq->vui_fields.bits.name, name #define vpic_var(name) vpic->name, name #define vpic_field(name) vpic->pic_fields.bits.name, name #define vslice_var(name) vslice->name, name #define vslice_field(name) vslice->slice_fields.bits.name, name #define mseq_var(name) mseq->name, name #define mslice_var(name) mslice->name, name static void vaapi_encode_h264_write_nal_header(PutBitContext *pbc, int nal_unit_type, int nal_ref_idc) { u(1, 0, forbidden_zero_bit); u(2, nal_ref_idc, nal_ref_idc); u(5, nal_unit_type, nal_unit_type); } static void vaapi_encode_h264_write_trailing_rbsp(PutBitContext *pbc) { u(1, 1, rbsp_stop_one_bit); while (put_bits_count(pbc) & 7) u(1, 0, rbsp_alignment_zero_bit); } static void vaapi_encode_h264_write_vui(PutBitContext *pbc, VAAPIEncodeContext *ctx) { VAEncSequenceParameterBufferH264 *vseq = ctx->codec_sequence_params; VAAPIEncodeH264Context *priv = ctx->priv_data; VAAPIEncodeH264MiscSequenceParams *mseq = &priv->misc_sequence_params; int i; u(1, vvui_field(aspect_ratio_info_present_flag)); if (vseq->vui_fields.bits.aspect_ratio_info_present_flag) { u(8, vseq_var(aspect_ratio_idc)); if (vseq->aspect_ratio_idc == 255) { u(16, vseq_var(sar_width)); u(16, vseq_var(sar_height)); } } u(1, mseq_var(overscan_info_present_flag)); if (mseq->overscan_info_present_flag) u(1, mseq_var(overscan_appropriate_flag)); u(1, mseq_var(video_signal_type_present_flag)); if (mseq->video_signal_type_present_flag) { u(3, mseq_var(video_format)); u(1, mseq_var(video_full_range_flag)); u(1, mseq_var(colour_description_present_flag)); if (mseq->colour_description_present_flag) { u(8, mseq_var(colour_primaries)); u(8, mseq_var(transfer_characteristics)); u(8, mseq_var(matrix_coefficients)); } } u(1, mseq_var(chroma_loc_info_present_flag)); if (mseq->chroma_loc_info_present_flag) { ue(mseq_var(chroma_sample_loc_type_top_field)); ue(mseq_var(chroma_sample_loc_type_bottom_field)); } u(1, vvui_field(timing_info_present_flag)); if (vseq->vui_fields.bits.timing_info_present_flag) { u(32, vseq_var(num_units_in_tick)); u(32, vseq_var(time_scale)); u(1, mseq_var(fixed_frame_rate_flag)); } u(1, mseq_var(nal_hrd_parameters_present_flag)); if (mseq->nal_hrd_parameters_present_flag) { ue(mseq_var(cpb_cnt_minus1)); u(4, mseq_var(bit_rate_scale)); u(4, mseq_var(cpb_size_scale)); for (i = 0; i <= mseq->cpb_cnt_minus1; i++) { ue(mseq_var(bit_rate_value_minus1[i])); ue(mseq_var(cpb_size_value_minus1[i])); u(1, mseq_var(cbr_flag[i])); } u(5, mseq_var(initial_cpb_removal_delay_length_minus1)); u(5, mseq_var(cpb_removal_delay_length_minus1)); u(5, mseq_var(dpb_output_delay_length_minus1)); u(5, mseq_var(time_offset_length)); } u(1, mseq_var(vcl_hrd_parameters_present_flag)); if (mseq->vcl_hrd_parameters_present_flag) { av_assert0(0 && "vcl hrd parameters not supported"); } if (mseq->nal_hrd_parameters_present_flag || mseq->vcl_hrd_parameters_present_flag) u(1, mseq_var(low_delay_hrd_flag)); u(1, mseq_var(pic_struct_present_flag)); u(1, vvui_field(bitstream_restriction_flag)); if (vseq->vui_fields.bits.bitstream_restriction_flag) { av_assert0(0 && "bitstream restrictions not supported"); } } static void vaapi_encode_h264_write_sps(PutBitContext *pbc, VAAPIEncodeContext *ctx) { VAEncSequenceParameterBufferH264 *vseq = ctx->codec_sequence_params; VAAPIEncodeH264Context *priv = ctx->priv_data; VAAPIEncodeH264MiscSequenceParams *mseq = &priv->misc_sequence_params; int i; vaapi_encode_h264_write_nal_header(pbc, H264_NAL_SPS, 3); u(8, mseq_var(profile_idc)); u(1, mseq_var(constraint_set0_flag)); u(1, mseq_var(constraint_set1_flag)); u(1, mseq_var(constraint_set2_flag)); u(1, mseq_var(constraint_set3_flag)); u(1, mseq_var(constraint_set4_flag)); u(1, mseq_var(constraint_set5_flag)); u(2, 0, reserved_zero_2bits); u(8, vseq_var(level_idc)); ue(vseq_var(seq_parameter_set_id)); if (mseq->profile_idc == 100 || mseq->profile_idc == 110 || mseq->profile_idc == 122 || mseq->profile_idc == 244 || mseq->profile_idc == 44 || mseq->profile_idc == 83 || mseq->profile_idc == 86 || mseq->profile_idc == 118 || mseq->profile_idc == 128 || mseq->profile_idc == 138) { ue(vseq_field(chroma_format_idc)); if (vseq->seq_fields.bits.chroma_format_idc == 3) u(1, mseq_var(separate_colour_plane_flag)); ue(vseq_var(bit_depth_luma_minus8)); ue(vseq_var(bit_depth_chroma_minus8)); u(1, mseq_var(qpprime_y_zero_transform_bypass_flag)); u(1, vseq_field(seq_scaling_matrix_present_flag)); if (vseq->seq_fields.bits.seq_scaling_matrix_present_flag) { av_assert0(0 && "scaling matrices not supported"); } } ue(vseq_field(log2_max_frame_num_minus4)); ue(vseq_field(pic_order_cnt_type)); if (vseq->seq_fields.bits.pic_order_cnt_type == 0) { ue(vseq_field(log2_max_pic_order_cnt_lsb_minus4)); } else if (vseq->seq_fields.bits.pic_order_cnt_type == 1) { u(1, mseq_var(delta_pic_order_always_zero_flag)); se(vseq_var(offset_for_non_ref_pic)); se(vseq_var(offset_for_top_to_bottom_field)); ue(vseq_var(num_ref_frames_in_pic_order_cnt_cycle)); for (i = 0; i < vseq->num_ref_frames_in_pic_order_cnt_cycle; i++) se(vseq_var(offset_for_ref_frame[i])); } ue(vseq_var(max_num_ref_frames)); u(1, mseq_var(gaps_in_frame_num_allowed_flag)); ue(vseq->picture_width_in_mbs - 1, pic_width_in_mbs_minus1); ue(vseq->picture_height_in_mbs - 1, pic_height_in_mbs_minus1); u(1, vseq_field(frame_mbs_only_flag)); if (!vseq->seq_fields.bits.frame_mbs_only_flag) u(1, vseq_field(mb_adaptive_frame_field_flag)); u(1, vseq_field(direct_8x8_inference_flag)); u(1, vseq_var(frame_cropping_flag)); if (vseq->frame_cropping_flag) { ue(vseq_var(frame_crop_left_offset)); ue(vseq_var(frame_crop_right_offset)); ue(vseq_var(frame_crop_top_offset)); ue(vseq_var(frame_crop_bottom_offset)); } u(1, vseq_var(vui_parameters_present_flag)); if (vseq->vui_parameters_present_flag) vaapi_encode_h264_write_vui(pbc, ctx); vaapi_encode_h264_write_trailing_rbsp(pbc); } static void vaapi_encode_h264_write_pps(PutBitContext *pbc, VAAPIEncodeContext *ctx) { VAEncPictureParameterBufferH264 *vpic = ctx->codec_picture_params; VAAPIEncodeH264Context *priv = ctx->priv_data; VAAPIEncodeH264MiscSequenceParams *mseq = &priv->misc_sequence_params; vaapi_encode_h264_write_nal_header(pbc, H264_NAL_PPS, 3); ue(vpic_var(pic_parameter_set_id)); ue(vpic_var(seq_parameter_set_id)); u(1, vpic_field(entropy_coding_mode_flag)); u(1, mseq_var(bottom_field_pic_order_in_frame_present_flag)); ue(mseq_var(num_slice_groups_minus1)); if (mseq->num_slice_groups_minus1 > 0) { ue(mseq_var(slice_group_map_type)); av_assert0(0 && "slice groups not supported"); } ue(vpic_var(num_ref_idx_l0_active_minus1)); ue(vpic_var(num_ref_idx_l1_active_minus1)); u(1, vpic_field(weighted_pred_flag)); u(2, vpic_field(weighted_bipred_idc)); se(vpic->pic_init_qp - 26, pic_init_qp_minus26); se(mseq_var(pic_init_qs_minus26)); se(vpic_var(chroma_qp_index_offset)); u(1, vpic_field(deblocking_filter_control_present_flag)); u(1, vpic_field(constrained_intra_pred_flag)); u(1, vpic_field(redundant_pic_cnt_present_flag)); u(1, vpic_field(transform_8x8_mode_flag)); u(1, vpic_field(pic_scaling_matrix_present_flag)); if (vpic->pic_fields.bits.pic_scaling_matrix_present_flag) { av_assert0(0 && "scaling matrices not supported"); } se(vpic_var(second_chroma_qp_index_offset)); vaapi_encode_h264_write_trailing_rbsp(pbc); } static void vaapi_encode_h264_write_slice_header2(PutBitContext *pbc, VAAPIEncodeContext *ctx, VAAPIEncodePicture *pic, VAAPIEncodeSlice *slice) { VAEncSequenceParameterBufferH264 *vseq = ctx->codec_sequence_params; VAEncPictureParameterBufferH264 *vpic = pic->codec_picture_params; VAEncSliceParameterBufferH264 *vslice = slice->codec_slice_params; VAAPIEncodeH264Context *priv = ctx->priv_data; VAAPIEncodeH264MiscSequenceParams *mseq = &priv->misc_sequence_params; VAAPIEncodeH264Slice *pslice = slice->priv_data; VAAPIEncodeH264MiscSliceParams *mslice = &pslice->misc_slice_params; vaapi_encode_h264_write_nal_header(pbc, mslice->nal_unit_type, mslice->nal_ref_idc); ue(vslice->macroblock_address, first_mb_in_slice); ue(vslice_var(slice_type)); ue(vpic_var(pic_parameter_set_id)); if (mseq->separate_colour_plane_flag) { u(2, mslice_var(colour_plane_id)); } u(4 + vseq->seq_fields.bits.log2_max_frame_num_minus4, (vpic->frame_num & ((1 << (4 + vseq->seq_fields.bits.log2_max_frame_num_minus4)) - 1)), frame_num); if (!vseq->seq_fields.bits.frame_mbs_only_flag) { u(1, mslice_var(field_pic_flag)); if (mslice->field_pic_flag) u(1, mslice_var(bottom_field_flag)); } if (vpic->pic_fields.bits.idr_pic_flag) { ue(vslice_var(idr_pic_id)); } if (vseq->seq_fields.bits.pic_order_cnt_type == 0) { u(4 + vseq->seq_fields.bits.log2_max_pic_order_cnt_lsb_minus4, vslice_var(pic_order_cnt_lsb)); if (mseq->bottom_field_pic_order_in_frame_present_flag && !mslice->field_pic_flag) { se(vslice_var(delta_pic_order_cnt_bottom)); } } if (vseq->seq_fields.bits.pic_order_cnt_type == 1 && !vseq->seq_fields.bits.delta_pic_order_always_zero_flag) { se(vslice_var(delta_pic_order_cnt[0])); if (mseq->bottom_field_pic_order_in_frame_present_flag && !mslice->field_pic_flag) { se(vslice_var(delta_pic_order_cnt[1])); } } if (vpic->pic_fields.bits.redundant_pic_cnt_present_flag) { ue(mslice_var(redundant_pic_cnt)); } if (vslice->slice_type == SLICE_TYPE_B) { u(1, vslice_var(direct_spatial_mv_pred_flag)); } if (vslice->slice_type == SLICE_TYPE_P || vslice->slice_type == SLICE_TYPE_SP || vslice->slice_type == SLICE_TYPE_B) { u(1, vslice_var(num_ref_idx_active_override_flag)); if (vslice->num_ref_idx_active_override_flag) { ue(vslice_var(num_ref_idx_l0_active_minus1)); if (vslice->slice_type == SLICE_TYPE_B) ue(vslice_var(num_ref_idx_l1_active_minus1)); } } if (mslice->nal_unit_type == 20 || mslice->nal_unit_type == 21) { av_assert0(0 && "no MVC support"); } else { if (vslice->slice_type % 5 != 2 && vslice->slice_type % 5 != 4) { u(1, mslice_var(ref_pic_list_modification_flag_l0)); if (mslice->ref_pic_list_modification_flag_l0) { av_assert0(0 && "ref pic list modification"); } } if (vslice->slice_type % 5 == 1) { u(1, mslice_var(ref_pic_list_modification_flag_l1)); if (mslice->ref_pic_list_modification_flag_l1) { av_assert0(0 && "ref pic list modification"); } } } if ((vpic->pic_fields.bits.weighted_pred_flag && (vslice->slice_type == SLICE_TYPE_P || vslice->slice_type == SLICE_TYPE_SP)) || (vpic->pic_fields.bits.weighted_bipred_idc == 1 && vslice->slice_type == SLICE_TYPE_B)) { av_assert0(0 && "prediction weights not supported"); } av_assert0(mslice->nal_ref_idc > 0 == vpic->pic_fields.bits.reference_pic_flag); if (mslice->nal_ref_idc != 0) { if (vpic->pic_fields.bits.idr_pic_flag) { u(1, mslice_var(no_output_of_prior_pics_flag)); u(1, mslice_var(long_term_reference_flag)); } else { u(1, mslice_var(adaptive_ref_pic_marking_mode_flag)); if (mslice->adaptive_ref_pic_marking_mode_flag) { av_assert0(0 && "MMCOs not supported"); } } } if (vpic->pic_fields.bits.entropy_coding_mode_flag && vslice->slice_type != SLICE_TYPE_I && vslice->slice_type != SLICE_TYPE_SI) { ue(vslice_var(cabac_init_idc)); } se(vslice_var(slice_qp_delta)); if (vslice->slice_type == SLICE_TYPE_SP || vslice->slice_type == SLICE_TYPE_SI) { if (vslice->slice_type == SLICE_TYPE_SP) u(1, mslice_var(sp_for_switch_flag)); se(mslice_var(slice_qs_delta)); } if (vpic->pic_fields.bits.deblocking_filter_control_present_flag) { ue(vslice_var(disable_deblocking_filter_idc)); if (vslice->disable_deblocking_filter_idc != 1) { se(vslice_var(slice_alpha_c0_offset_div2)); se(vslice_var(slice_beta_offset_div2)); } } if (mseq->num_slice_groups_minus1 > 0 && mseq->slice_group_map_type >= 3 && mseq->slice_group_map_type <= 5) { av_assert0(0 && "slice groups not supported"); } // No alignment - this need not be a byte boundary. } static void vaapi_encode_h264_write_buffering_period(PutBitContext *pbc, VAAPIEncodeContext *ctx, VAAPIEncodePicture *pic) { VAAPIEncodeH264Context *priv = ctx->priv_data; VAAPIEncodeH264MiscSequenceParams *mseq = &priv->misc_sequence_params; VAEncPictureParameterBufferH264 *vpic = pic->codec_picture_params; int i; ue(vpic_var(seq_parameter_set_id)); if (mseq->nal_hrd_parameters_present_flag) { for (i = 0; i <= mseq->cpb_cnt_minus1; i++) { u(mseq->initial_cpb_removal_delay_length_minus1 + 1, mseq_var(initial_cpb_removal_delay)); u(mseq->initial_cpb_removal_delay_length_minus1 + 1, mseq_var(initial_cpb_removal_delay_offset)); } } if (mseq->vcl_hrd_parameters_present_flag) { av_assert0(0 && "vcl hrd parameters not supported"); } } static void vaapi_encode_h264_write_pic_timing(PutBitContext *pbc, VAAPIEncodeContext *ctx, VAAPIEncodePicture *pic) { VAEncSequenceParameterBufferH264 *vseq = ctx->codec_sequence_params; VAAPIEncodeH264Context *priv = ctx->priv_data; VAAPIEncodeH264MiscSequenceParams *mseq = &priv->misc_sequence_params; int i, num_clock_ts; if (mseq->nal_hrd_parameters_present_flag || mseq->vcl_hrd_parameters_present_flag) { u(mseq->cpb_removal_delay_length_minus1 + 1, 2 * vseq->num_units_in_tick * priv->cpb_delay, cpb_removal_delay); u(mseq->dpb_output_delay_length_minus1 + 1, 2 * vseq->num_units_in_tick * priv->dpb_delay, dpb_output_delay); } if (mseq->pic_struct_present_flag) { u(4, mseq_var(pic_struct)); num_clock_ts = (mseq->pic_struct <= 2 ? 1 : mseq->pic_struct <= 4 ? 2 : mseq->pic_struct <= 8 ? 3 : 0); for (i = 0; i < num_clock_ts; i++) { u(1, 0, clock_timestamp_flag[i]); // No full timestamp information. } } } static void vaapi_encode_h264_write_identifier(PutBitContext *pbc, VAAPIEncodeContext *ctx, VAAPIEncodePicture *pic) { const char *lavc = LIBAVCODEC_IDENT; const char *vaapi = VA_VERSION_S; const char *driver = vaQueryVendorString(ctx->hwctx->display); char tmp[256]; int i; // Random (version 4) ISO 11578 UUID. uint8_t uuid[16] = { 0x59, 0x94, 0x8b, 0x28, 0x11, 0xec, 0x45, 0xaf, 0x96, 0x75, 0x19, 0xd4, 0x1f, 0xea, 0xa9, 0x4d, }; for (i = 0; i < 16; i++) u(8, uuid[i], uuid_iso_iec_11578); snprintf(tmp, sizeof(tmp), "%s / VAAPI %s / %s", lavc, vaapi, driver); for (i = 0; i < sizeof(tmp) && tmp[i]; i++) u(8, tmp[i], user_data_payload_byte); } static void vaapi_encode_h264_write_sei(PutBitContext *pbc, VAAPIEncodeContext *ctx, VAAPIEncodePicture *pic) { VAAPIEncodeH264Context *priv = ctx->priv_data; PutBitContext payload_bits; char payload[256]; int payload_type, payload_size, i; void (*write_payload)(PutBitContext *pbc, VAAPIEncodeContext *ctx, VAAPIEncodePicture *pic) = NULL; vaapi_encode_h264_write_nal_header(pbc, H264_NAL_SEI, 0); for (payload_type = 0; payload_type < 64; payload_type++) { switch (payload_type) { case SEI_TYPE_BUFFERING_PERIOD: if (!priv->send_timing_sei || pic->type != PICTURE_TYPE_IDR) continue; write_payload = &vaapi_encode_h264_write_buffering_period; break; case SEI_TYPE_PIC_TIMING: if (!priv->send_timing_sei) continue; write_payload = &vaapi_encode_h264_write_pic_timing; break; case SEI_TYPE_USER_DATA_UNREGISTERED: if (pic->encode_order != 0) continue; write_payload = &vaapi_encode_h264_write_identifier; break; default: continue; } init_put_bits(&payload_bits, payload, sizeof(payload)); write_payload(&payload_bits, ctx, pic); if (put_bits_count(&payload_bits) & 7) { write_u(&payload_bits, 1, 1, bit_equal_to_one); while (put_bits_count(&payload_bits) & 7) write_u(&payload_bits, 1, 0, bit_equal_to_zero); } payload_size = put_bits_count(&payload_bits) / 8; flush_put_bits(&payload_bits); u(8, payload_type, last_payload_type_byte); u(8, payload_size, last_payload_size_byte); for (i = 0; i < payload_size; i++) u(8, payload[i] & 0xff, sei_payload); } vaapi_encode_h264_write_trailing_rbsp(pbc); } static int vaapi_encode_h264_write_sequence_header(AVCodecContext *avctx, char *data, size_t *data_len) { VAAPIEncodeContext *ctx = avctx->priv_data; PutBitContext pbc; char tmp[256]; int err; size_t nal_len, bit_len, bit_pos, next_len; bit_len = *data_len; bit_pos = 0; init_put_bits(&pbc, tmp, sizeof(tmp)); vaapi_encode_h264_write_sps(&pbc, ctx); nal_len = put_bits_count(&pbc); flush_put_bits(&pbc); next_len = bit_len - bit_pos; err = ff_vaapi_encode_h26x_nal_unit_to_byte_stream(data + bit_pos / 8, &next_len, tmp, nal_len); if (err < 0) return err; bit_pos += next_len; init_put_bits(&pbc, tmp, sizeof(tmp)); vaapi_encode_h264_write_pps(&pbc, ctx); nal_len = put_bits_count(&pbc); flush_put_bits(&pbc); next_len = bit_len - bit_pos; err = ff_vaapi_encode_h26x_nal_unit_to_byte_stream(data + bit_pos / 8, &next_len, tmp, nal_len); if (err < 0) return err; bit_pos += next_len; *data_len = bit_pos; return 0; } 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; PutBitContext pbc; char tmp[256]; size_t header_len; init_put_bits(&pbc, tmp, sizeof(tmp)); vaapi_encode_h264_write_slice_header2(&pbc, ctx, pic, slice); header_len = put_bits_count(&pbc); flush_put_bits(&pbc); return ff_vaapi_encode_h26x_nal_unit_to_byte_stream(data, data_len, tmp, header_len); } 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; PutBitContext pbc; char tmp[256]; size_t header_len; if (index == 0 && ctx->va_rc_mode == VA_RC_CBR) { *type = VAEncPackedHeaderH264_SEI; init_put_bits(&pbc, tmp, sizeof(tmp)); vaapi_encode_h264_write_sei(&pbc, ctx, pic); header_len = put_bits_count(&pbc); flush_put_bits(&pbc); return ff_vaapi_encode_h26x_nal_unit_to_byte_stream(data, data_len, tmp, header_len); } else { return AVERROR_EOF; } } static int vaapi_encode_h264_init_sequence_params(AVCodecContext *avctx) { VAAPIEncodeContext *ctx = avctx->priv_data; VAEncSequenceParameterBufferH264 *vseq = ctx->codec_sequence_params; VAEncPictureParameterBufferH264 *vpic = ctx->codec_picture_params; VAAPIEncodeH264Context *priv = ctx->priv_data; VAAPIEncodeH264MiscSequenceParams *mseq = &priv->misc_sequence_params; int i; { vseq->seq_parameter_set_id = 0; vseq->level_idc = avctx->level; vseq->max_num_ref_frames = 2; vseq->picture_width_in_mbs = priv->mb_width; vseq->picture_height_in_mbs = priv->mb_height; vseq->seq_fields.bits.chroma_format_idc = 1; vseq->seq_fields.bits.frame_mbs_only_flag = 1; vseq->seq_fields.bits.direct_8x8_inference_flag = 1; vseq->seq_fields.bits.log2_max_frame_num_minus4 = 4; vseq->seq_fields.bits.pic_order_cnt_type = 0; if (avctx->width != ctx->surface_width || avctx->height != ctx->surface_height) { vseq->frame_cropping_flag = 1; vseq->frame_crop_left_offset = 0; vseq->frame_crop_right_offset = (ctx->surface_width - avctx->width) / 2; vseq->frame_crop_top_offset = 0; vseq->frame_crop_bottom_offset = (ctx->surface_height - avctx->height) / 2; } else { vseq->frame_cropping_flag = 0; } vseq->vui_parameters_present_flag = 1; if (avctx->sample_aspect_ratio.num != 0) { vseq->vui_fields.bits.aspect_ratio_info_present_flag = 1; // There is a large enum of these which we could support // individually rather than using the generic X/Y form? if (avctx->sample_aspect_ratio.num == avctx->sample_aspect_ratio.den) { vseq->aspect_ratio_idc = 1; } else { vseq->aspect_ratio_idc = 255; // Extended SAR. vseq->sar_width = avctx->sample_aspect_ratio.num; vseq->sar_height = avctx->sample_aspect_ratio.den; } } if (avctx->color_primaries != AVCOL_PRI_UNSPECIFIED || avctx->color_trc != AVCOL_TRC_UNSPECIFIED || avctx->colorspace != AVCOL_SPC_UNSPECIFIED) { mseq->video_signal_type_present_flag = 1; mseq->video_format = 5; // Unspecified. mseq->video_full_range_flag = 0; mseq->colour_description_present_flag = 1; // These enums are derived from the standard and hence // we can just use the values directly. mseq->colour_primaries = avctx->color_primaries; mseq->transfer_characteristics = avctx->color_trc; mseq->matrix_coefficients = avctx->colorspace; } vseq->bits_per_second = avctx->bit_rate; vseq->vui_fields.bits.timing_info_present_flag = 1; if (avctx->framerate.num > 0 && avctx->framerate.den > 0) { vseq->num_units_in_tick = avctx->framerate.num; vseq->time_scale = 2 * avctx->framerate.den; mseq->fixed_frame_rate_flag = 1; } else { vseq->num_units_in_tick = avctx->time_base.num; vseq->time_scale = 2 * avctx->time_base.den; mseq->fixed_frame_rate_flag = 0; } if (ctx->va_rc_mode == VA_RC_CBR) { priv->send_timing_sei = 1; mseq->nal_hrd_parameters_present_flag = 1; mseq->cpb_cnt_minus1 = 0; // Try to scale these to a sensible range so that the // golomb encode of the value is not overlong. mseq->bit_rate_scale = av_clip_uintp2(av_log2(avctx->bit_rate) - 15 - 6, 4); mseq->bit_rate_value_minus1[0] = (avctx->bit_rate >> mseq->bit_rate_scale + 6) - 1; mseq->cpb_size_scale = av_clip_uintp2(av_log2(ctx->hrd_params.hrd.buffer_size) - 15 - 4, 4); mseq->cpb_size_value_minus1[0] = (ctx->hrd_params.hrd.buffer_size >> mseq->cpb_size_scale + 4) - 1; // CBR mode isn't actually available here, despite naming. mseq->cbr_flag[0] = 0; mseq->initial_cpb_removal_delay_length_minus1 = 23; mseq->cpb_removal_delay_length_minus1 = 23; mseq->dpb_output_delay_length_minus1 = 7; mseq->time_offset_length = 0; // This calculation can easily overflow 32 bits. mseq->initial_cpb_removal_delay = 90000 * (uint64_t)ctx->hrd_params.hrd.initial_buffer_fullness / ctx->hrd_params.hrd.buffer_size; mseq->initial_cpb_removal_delay_offset = 0; } else { priv->send_timing_sei = 0; mseq->nal_hrd_parameters_present_flag = 0; } vseq->intra_period = ctx->p_per_i * (ctx->b_per_p + 1); vseq->intra_idr_period = vseq->intra_period; vseq->ip_period = ctx->b_per_p + 1; } { vpic->CurrPic.picture_id = VA_INVALID_ID; vpic->CurrPic.flags = VA_PICTURE_H264_INVALID; for (i = 0; i < FF_ARRAY_ELEMS(vpic->ReferenceFrames); i++) { vpic->ReferenceFrames[i].picture_id = VA_INVALID_ID; vpic->ReferenceFrames[i].flags = VA_PICTURE_H264_INVALID; } vpic->coded_buf = VA_INVALID_ID; vpic->pic_parameter_set_id = 0; vpic->seq_parameter_set_id = 0; vpic->num_ref_idx_l0_active_minus1 = 0; vpic->num_ref_idx_l1_active_minus1 = 0; vpic->pic_fields.bits.entropy_coding_mode_flag = ((avctx->profile & 0xff) != 66); vpic->pic_fields.bits.weighted_pred_flag = 0; vpic->pic_fields.bits.weighted_bipred_idc = 0; vpic->pic_fields.bits.transform_8x8_mode_flag = ((avctx->profile & 0xff) >= 100); vpic->pic_init_qp = priv->fixed_qp_idr; } { mseq->profile_idc = avctx->profile & 0xff; if (avctx->profile & FF_PROFILE_H264_CONSTRAINED) mseq->constraint_set1_flag = 1; if (avctx->profile & FF_PROFILE_H264_INTRA) mseq->constraint_set3_flag = 1; } return 0; } static int vaapi_encode_h264_init_picture_params(AVCodecContext *avctx, VAAPIEncodePicture *pic) { VAAPIEncodeContext *ctx = avctx->priv_data; VAEncSequenceParameterBufferH264 *vseq = ctx->codec_sequence_params; VAEncPictureParameterBufferH264 *vpic = pic->codec_picture_params; VAAPIEncodeH264Context *priv = ctx->priv_data; int i; if (pic->type == PICTURE_TYPE_IDR) { av_assert0(pic->display_order == pic->encode_order); vpic->frame_num = 0; priv->next_frame_num = 1; priv->cpb_delay = 0; } else { vpic->frame_num = priv->next_frame_num; if (pic->type != PICTURE_TYPE_B) { // nal_ref_idc != 0 ++priv->next_frame_num; } ++priv->cpb_delay; } priv->dpb_delay = pic->display_order - pic->encode_order + 1; vpic->frame_num = vpic->frame_num & ((1 << (4 + vseq->seq_fields.bits.log2_max_frame_num_minus4)) - 1); vpic->CurrPic.picture_id = pic->recon_surface; vpic->CurrPic.frame_idx = vpic->frame_num; vpic->CurrPic.flags = 0; vpic->CurrPic.TopFieldOrderCnt = pic->display_order; vpic->CurrPic.BottomFieldOrderCnt = pic->display_order; for (i = 0; i < pic->nb_refs; i++) { VAAPIEncodePicture *ref = pic->refs[i]; av_assert0(ref && ref->encode_order < pic->encode_order); vpic->ReferenceFrames[i].picture_id = ref->recon_surface; vpic->ReferenceFrames[i].frame_idx = ref->encode_order; vpic->ReferenceFrames[i].flags = VA_PICTURE_H264_SHORT_TERM_REFERENCE; vpic->ReferenceFrames[i].TopFieldOrderCnt = ref->display_order; vpic->ReferenceFrames[i].BottomFieldOrderCnt = ref->display_order; } for (; i < FF_ARRAY_ELEMS(vpic->ReferenceFrames); i++) { vpic->ReferenceFrames[i].picture_id = VA_INVALID_ID; vpic->ReferenceFrames[i].flags = VA_PICTURE_H264_INVALID; } vpic->coded_buf = pic->output_buffer; 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; VAEncSequenceParameterBufferH264 *vseq = ctx->codec_sequence_params; VAEncPictureParameterBufferH264 *vpic = pic->codec_picture_params; VAEncSliceParameterBufferH264 *vslice = slice->codec_slice_params; VAAPIEncodeH264Context *priv = ctx->priv_data; VAAPIEncodeH264Slice *pslice; VAAPIEncodeH264MiscSliceParams *mslice; int i; slice->priv_data = av_mallocz(sizeof(*pslice)); if (!slice->priv_data) return AVERROR(ENOMEM); pslice = slice->priv_data; mslice = &pslice->misc_slice_params; if (pic->type == PICTURE_TYPE_IDR) mslice->nal_unit_type = H264_NAL_IDR_SLICE; else mslice->nal_unit_type = H264_NAL_SLICE; switch (pic->type) { case PICTURE_TYPE_IDR: vslice->slice_type = SLICE_TYPE_I; mslice->nal_ref_idc = 3; break; case PICTURE_TYPE_I: vslice->slice_type = SLICE_TYPE_I; mslice->nal_ref_idc = 2; break; case PICTURE_TYPE_P: vslice->slice_type = SLICE_TYPE_P; mslice->nal_ref_idc = 1; break; case PICTURE_TYPE_B: vslice->slice_type = SLICE_TYPE_B; mslice->nal_ref_idc = 0; break; default: av_assert0(0 && "invalid picture type"); } // Only one slice per frame. vslice->macroblock_address = 0; vslice->num_macroblocks = priv->mb_width * priv->mb_height; vslice->macroblock_info = VA_INVALID_ID; vslice->pic_parameter_set_id = vpic->pic_parameter_set_id; vslice->idr_pic_id = priv->idr_pic_count++; vslice->pic_order_cnt_lsb = pic->display_order & ((1 << (4 + vseq->seq_fields.bits.log2_max_pic_order_cnt_lsb_minus4)) - 1); 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->num_ref_idx_l0_active_minus1 = 0; vslice->RefPicList0[0] = vpic->ReferenceFrames[0]; } if (pic->nb_refs >= 2) { // Forward reference for B-frame. av_assert0(pic->type == PICTURE_TYPE_B); vslice->num_ref_idx_l1_active_minus1 = 0; vslice->RefPicList1[0] = vpic->ReferenceFrames[1]; } if (pic->type == PICTURE_TYPE_B) vslice->slice_qp_delta = priv->fixed_qp_b - vpic->pic_init_qp; else if (pic->type == PICTURE_TYPE_P) vslice->slice_qp_delta = priv->fixed_qp_p - vpic->pic_init_qp; else vslice->slice_qp_delta = priv->fixed_qp_idr - vpic->pic_init_qp; vslice->direct_spatial_mv_pred_flag = 1; 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; 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; 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) { // 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 constant-bitrate = %d bps.\n", avctx->bit_rate); } else { av_assert0(0 && "Invalid RC mode."); } if (opt->quality > 0) { #if VA_CHECK_VERSION(0, 36, 0) priv->quality_params.misc.type = VAEncMiscParameterTypeQualityLevel; priv->quality_params.quality.quality_level = opt->quality; ctx->global_params[ctx->nb_global_params] = &priv->quality_params.misc; ctx->global_params_size[ctx->nb_global_params++] = sizeof(priv->quality_params); #else av_log(avctx, AV_LOG_WARNING, "The encode quality option is not " "supported with this VAAPI version.\n"); #endif } 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_CONSTRAINED_BASELINE: ctx->va_profile = VAProfileH264ConstrainedBaseline; break; case FF_PROFILE_H264_BASELINE: ctx->va_profile = VAProfileH264Baseline; 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) ctx->va_rc_mode = VA_RC_CBR; 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); } #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 }, { NULL }, }; static const AVCodecDefault vaapi_encode_h264_defaults[] = { { "profile", "100" }, { "level", "51" }, { "b", "0" }, { "bf", "2" }, { "g", "120" }, { "i_qfactor", "1" }, { "i_qoffset", "0" }, { "b_qfactor", "6/5" }, { "b_qoffset", "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 = &ff_vaapi_encode_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, }, };