void x264_sps_init( x264_sps_t *sps, int i_id, x264_param_t *param ) { int csp = param->i_csp & X264_CSP_MASK; sps->i_id = i_id; sps->i_mb_width = ( param->i_width + 15 ) / 16; sps->i_mb_height= ( param->i_height + 15 ) / 16; sps->i_chroma_format_idc = csp >= X264_CSP_I444 ? CHROMA_444 : csp >= X264_CSP_I422 ? CHROMA_422 : CHROMA_420; sps->b_qpprime_y_zero_transform_bypass = param->rc.i_rc_method == X264_RC_CQP && param->rc.i_qp_constant == 0; if( sps->b_qpprime_y_zero_transform_bypass || sps->i_chroma_format_idc == CHROMA_444 ) sps->i_profile_idc = PROFILE_HIGH444_PREDICTIVE; else if( sps->i_chroma_format_idc == CHROMA_422 ) sps->i_profile_idc = PROFILE_HIGH422; else if( BIT_DEPTH > 8 ) sps->i_profile_idc = PROFILE_HIGH10; else if( param->analyse.b_transform_8x8 || param->i_cqm_preset != X264_CQM_FLAT ) sps->i_profile_idc = PROFILE_HIGH; else if( param->b_cabac || param->i_bframe > 0 || param->b_interlaced || param->b_fake_interlaced || param->analyse.i_weighted_pred > 0 ) sps->i_profile_idc = PROFILE_MAIN; else sps->i_profile_idc = PROFILE_BASELINE; sps->b_constraint_set0 = sps->i_profile_idc == PROFILE_BASELINE; /* x264 doesn't support the features that are in Baseline and not in Main, * namely arbitrary_slice_order and slice_groups. */ sps->b_constraint_set1 = sps->i_profile_idc <= PROFILE_MAIN; /* Never set constraint_set2, it is not necessary and not used in real world. */ sps->b_constraint_set2 = 0; sps->b_constraint_set3 = 0; sps->i_level_idc = param->i_level_idc; if( param->i_level_idc == 9 && ( sps->i_profile_idc == PROFILE_BASELINE || sps->i_profile_idc == PROFILE_MAIN ) ) { sps->b_constraint_set3 = 1; /* level 1b with Baseline or Main profile is signalled via constraint_set3 */ sps->i_level_idc = 11; } /* Intra profiles */ if( param->i_keyint_max == 1 && sps->i_profile_idc > PROFILE_HIGH ) sps->b_constraint_set3 = 1; sps->vui.i_num_reorder_frames = param->i_bframe_pyramid ? 2 : param->i_bframe ? 1 : 0; /* extra slot with pyramid so that we don't have to override the * order of forgetting old pictures */ sps->vui.i_max_dec_frame_buffering = sps->i_num_ref_frames = X264_MIN(X264_REF_MAX, X264_MAX4(param->i_frame_reference, 1 + sps->vui.i_num_reorder_frames, param->i_bframe_pyramid ? 4 : 1, param->i_dpb_size)); sps->i_num_ref_frames -= param->i_bframe_pyramid == X264_B_PYRAMID_STRICT; if( param->i_keyint_max == 1 ) { sps->i_num_ref_frames = 0; sps->vui.i_max_dec_frame_buffering = 0; } /* number of refs + current frame */ int max_frame_num = sps->vui.i_max_dec_frame_buffering * (!!param->i_bframe_pyramid+1) + 1; /* Intra refresh cannot write a recovery time greater than max frame num-1 */ if( param->b_intra_refresh ) { int time_to_recovery = X264_MIN( sps->i_mb_width - 1, param->i_keyint_max ) + param->i_bframe - 1; max_frame_num = X264_MAX( max_frame_num, time_to_recovery+1 ); } sps->i_log2_max_frame_num = 4; while( (1 << sps->i_log2_max_frame_num) <= max_frame_num ) sps->i_log2_max_frame_num++; sps->i_poc_type = param->i_bframe || param->b_interlaced || param->i_avcintra_class ? 0 : 2; if( sps->i_poc_type == 0 ) { int max_delta_poc = (param->i_bframe + 2) * (!!param->i_bframe_pyramid + 1) * 2; sps->i_log2_max_poc_lsb = 4; while( (1 << sps->i_log2_max_poc_lsb) <= max_delta_poc * 2 ) sps->i_log2_max_poc_lsb++; } sps->b_vui = 1; sps->b_gaps_in_frame_num_value_allowed = 0; sps->b_frame_mbs_only = !(param->b_interlaced || param->b_fake_interlaced); if( !sps->b_frame_mbs_only ) sps->i_mb_height = ( sps->i_mb_height + 1 ) & ~1; sps->b_mb_adaptive_frame_field = param->b_interlaced; sps->b_direct8x8_inference = 1; sps->crop.i_left = param->crop_rect.i_left; sps->crop.i_top = param->crop_rect.i_top; sps->crop.i_right = param->crop_rect.i_right + sps->i_mb_width*16 - param->i_width; sps->crop.i_bottom = (param->crop_rect.i_bottom + sps->i_mb_height*16 - param->i_height) >> !sps->b_frame_mbs_only; sps->b_crop = sps->crop.i_left || sps->crop.i_top || sps->crop.i_right || sps->crop.i_bottom; sps->vui.b_aspect_ratio_info_present = 0; if( param->vui.i_sar_width > 0 && param->vui.i_sar_height > 0 ) { sps->vui.b_aspect_ratio_info_present = 1; sps->vui.i_sar_width = param->vui.i_sar_width; sps->vui.i_sar_height= param->vui.i_sar_height; } sps->vui.b_overscan_info_present = param->vui.i_overscan > 0 && param->vui.i_overscan <= 2; if( sps->vui.b_overscan_info_present ) sps->vui.b_overscan_info = ( param->vui.i_overscan == 2 ? 1 : 0 ); sps->vui.b_signal_type_present = 0; sps->vui.i_vidformat = ( param->vui.i_vidformat >= 0 && param->vui.i_vidformat <= 5 ? param->vui.i_vidformat : 5 ); sps->vui.b_fullrange = ( param->vui.b_fullrange >= 0 && param->vui.b_fullrange <= 1 ? param->vui.b_fullrange : ( csp >= X264_CSP_BGR ? 1 : 0 ) ); sps->vui.b_color_description_present = 0; sps->vui.i_colorprim = ( param->vui.i_colorprim >= 0 && param->vui.i_colorprim <= 9 ? param->vui.i_colorprim : 2 ); sps->vui.i_transfer = ( param->vui.i_transfer >= 0 && param->vui.i_transfer <= 15 ? param->vui.i_transfer : 2 ); sps->vui.i_colmatrix = ( param->vui.i_colmatrix >= 0 && param->vui.i_colmatrix <= 10 ? param->vui.i_colmatrix : ( csp >= X264_CSP_BGR ? 0 : 2 ) ); if( sps->vui.i_colorprim != 2 || sps->vui.i_transfer != 2 || sps->vui.i_colmatrix != 2 ) { sps->vui.b_color_description_present = 1; } if( sps->vui.i_vidformat != 5 || sps->vui.b_fullrange || sps->vui.b_color_description_present ) { sps->vui.b_signal_type_present = 1; } /* FIXME: not sufficient for interlaced video */ sps->vui.b_chroma_loc_info_present = param->vui.i_chroma_loc > 0 && param->vui.i_chroma_loc <= 5 && sps->i_chroma_format_idc == CHROMA_420; if( sps->vui.b_chroma_loc_info_present ) { sps->vui.i_chroma_loc_top = param->vui.i_chroma_loc; sps->vui.i_chroma_loc_bottom = param->vui.i_chroma_loc; } sps->vui.b_timing_info_present = param->i_timebase_num > 0 && param->i_timebase_den > 0; if( sps->vui.b_timing_info_present ) { sps->vui.i_num_units_in_tick = param->i_timebase_num; sps->vui.i_time_scale = param->i_timebase_den * 2; sps->vui.b_fixed_frame_rate = !param->b_vfr_input; } sps->vui.b_vcl_hrd_parameters_present = 0; // we don't support VCL HRD sps->vui.b_nal_hrd_parameters_present = !!param->i_nal_hrd; sps->vui.b_pic_struct_present = param->b_pic_struct; // NOTE: HRD related parts of the SPS are initialised in x264_ratecontrol_init_reconfigurable sps->vui.b_bitstream_restriction = param->i_keyint_max > 1; if( sps->vui.b_bitstream_restriction ) { sps->vui.b_motion_vectors_over_pic_boundaries = 1; sps->vui.i_max_bytes_per_pic_denom = 0; sps->vui.i_max_bits_per_mb_denom = 0; sps->vui.i_log2_max_mv_length_horizontal = sps->vui.i_log2_max_mv_length_vertical = (int)log2f( X264_MAX( 1, param->analyse.i_mv_range*4-1 ) ) + 1; } }
void x264_sps_init( x264_sps_t *sps, int i_id, x264_param_t *param ) { sps->i_id = i_id; int max_frame_num; sps->b_qpprime_y_zero_transform_bypass = param->rc.i_rc_method == X264_RC_CQP && param->rc.i_qp_constant == 0; if( sps->b_qpprime_y_zero_transform_bypass ) sps->i_profile_idc = PROFILE_HIGH444_PREDICTIVE; else if( BIT_DEPTH > 8 ) sps->i_profile_idc = PROFILE_HIGH10; else if( param->analyse.b_transform_8x8 || param->i_cqm_preset != X264_CQM_FLAT ) sps->i_profile_idc = PROFILE_HIGH; else if( param->b_cabac || param->i_bframe > 0 || param->b_interlaced || param->b_fake_interlaced || param->analyse.i_weighted_pred > 0 ) sps->i_profile_idc = PROFILE_MAIN; else sps->i_profile_idc = PROFILE_BASELINE; sps->i_level_idc = param->i_level_idc; sps->b_constraint_set0 = sps->i_profile_idc == PROFILE_BASELINE; /* x264 doesn't support the features that are in Baseline and not in Main, * namely arbitrary_slice_order and slice_groups. */ sps->b_constraint_set1 = sps->i_profile_idc <= PROFILE_MAIN; /* Never set constraint_set2, it is not necessary and not used in real world. */ sps->b_constraint_set2 = 0; sps->vui.i_num_reorder_frames = param->i_bframe_pyramid ? 2 : param->i_bframe ? 1 : 0; /* extra slot with pyramid so that we don't have to override the * order of forgetting old pictures */ sps->vui.i_max_dec_frame_buffering = sps->i_num_ref_frames = X264_MIN(X264_REF_MAX, X264_MAX4(param->i_frame_reference, 1 + sps->vui.i_num_reorder_frames, param->i_bframe_pyramid ? 4 : 1, param->i_dpb_size)); sps->i_num_ref_frames -= param->i_bframe_pyramid == X264_B_PYRAMID_STRICT; /* number of refs + current frame */ max_frame_num = sps->vui.i_max_dec_frame_buffering * (!!param->i_bframe_pyramid+1) + 1; sps->i_log2_max_frame_num = 4; while( (1 << sps->i_log2_max_frame_num) <= max_frame_num ) sps->i_log2_max_frame_num++; sps->i_poc_type = 0; if( sps->i_poc_type == 0 ) { int max_delta_poc = (param->i_bframe + 2) * (!!param->i_bframe_pyramid + 1) * 2; sps->i_log2_max_poc_lsb = 4; while( (1 << sps->i_log2_max_poc_lsb) <= max_delta_poc * 2 ) sps->i_log2_max_poc_lsb++; } else if( sps->i_poc_type == 1 ) { int i; /* FIXME */ sps->b_delta_pic_order_always_zero = 1; sps->i_offset_for_non_ref_pic = 0; sps->i_offset_for_top_to_bottom_field = 0; sps->i_num_ref_frames_in_poc_cycle = 0; for( i = 0; i < sps->i_num_ref_frames_in_poc_cycle; i++ ) { sps->i_offset_for_ref_frame[i] = 0; } } sps->b_vui = 1; sps->b_gaps_in_frame_num_value_allowed = 0; sps->i_mb_width = ( param->i_width + 15 ) / 16; sps->i_mb_height= ( param->i_height + 15 ) / 16; sps->b_frame_mbs_only = !(param->b_interlaced || param->b_fake_interlaced); if( !sps->b_frame_mbs_only ) sps->i_mb_height = ( sps->i_mb_height + 1 ) & ~1; sps->b_mb_adaptive_frame_field = param->b_interlaced; sps->b_direct8x8_inference = 1; sps->crop.i_left = 0; sps->crop.i_top = 0; sps->crop.i_right = sps->i_mb_width*16 - param->i_width; sps->crop.i_bottom = (sps->i_mb_height*16 - param->i_height) >> !sps->b_frame_mbs_only; sps->b_crop = sps->crop.i_left || sps->crop.i_top || sps->crop.i_right || sps->crop.i_bottom; sps->vui.b_aspect_ratio_info_present = 0; if( param->vui.i_sar_width > 0 && param->vui.i_sar_height > 0 ) { sps->vui.b_aspect_ratio_info_present = 1; sps->vui.i_sar_width = param->vui.i_sar_width; sps->vui.i_sar_height= param->vui.i_sar_height; } sps->vui.b_overscan_info_present = ( param->vui.i_overscan ? 1 : 0 ); if( sps->vui.b_overscan_info_present ) sps->vui.b_overscan_info = ( param->vui.i_overscan == 2 ? 1 : 0 ); sps->vui.b_signal_type_present = 0; sps->vui.i_vidformat = ( param->vui.i_vidformat <= 5 ? param->vui.i_vidformat : 5 ); sps->vui.b_fullrange = ( param->vui.b_fullrange ? 1 : 0 ); sps->vui.b_color_description_present = 0; sps->vui.i_colorprim = ( param->vui.i_colorprim <= 9 ? param->vui.i_colorprim : 2 ); sps->vui.i_transfer = ( param->vui.i_transfer <= 11 ? param->vui.i_transfer : 2 ); sps->vui.i_colmatrix = ( param->vui.i_colmatrix <= 9 ? param->vui.i_colmatrix : 2 ); if( sps->vui.i_colorprim != 2 || sps->vui.i_transfer != 2 || sps->vui.i_colmatrix != 2 ) { sps->vui.b_color_description_present = 1; } if( sps->vui.i_vidformat != 5 || sps->vui.b_fullrange || sps->vui.b_color_description_present ) { sps->vui.b_signal_type_present = 1; } /* FIXME: not sufficient for interlaced video */ sps->vui.b_chroma_loc_info_present = ( param->vui.i_chroma_loc ? 1 : 0 ); if( sps->vui.b_chroma_loc_info_present ) { sps->vui.i_chroma_loc_top = param->vui.i_chroma_loc; sps->vui.i_chroma_loc_bottom = param->vui.i_chroma_loc; } sps->vui.b_timing_info_present = param->i_timebase_num > 0 && param->i_timebase_den > 0; if( sps->vui.b_timing_info_present ) { sps->vui.i_num_units_in_tick = param->i_timebase_num; sps->vui.i_time_scale = param->i_timebase_den * 2; sps->vui.b_fixed_frame_rate = !param->b_vfr_input; } sps->vui.b_vcl_hrd_parameters_present = 0; // we don't support VCL HRD sps->vui.b_nal_hrd_parameters_present = !!param->i_nal_hrd; sps->vui.b_pic_struct_present = param->b_pic_struct; // NOTE: HRD related parts of the SPS are initialised in x264_ratecontrol_init_reconfigurable sps->vui.b_bitstream_restriction = 1; if( sps->vui.b_bitstream_restriction ) { sps->vui.b_motion_vectors_over_pic_boundaries = 1; sps->vui.i_max_bytes_per_pic_denom = 0; sps->vui.i_max_bits_per_mb_denom = 0; sps->vui.i_log2_max_mv_length_horizontal = sps->vui.i_log2_max_mv_length_vertical = (int)log2f( X264_MAX( 1, param->analyse.i_mv_range*4-1 ) ) + 1; } }