| /****************************************************************************** |
| * |
| * Copyright (C) 2015 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at: |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| ***************************************************************************** |
| * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore |
| */ |
| |
| /** |
| ******************************************************************************* |
| * @file |
| * ih264e_encode_header.c |
| * |
| * @brief |
| * This file contains function definitions related to header encoding. |
| * |
| * @author |
| * ittiam |
| * |
| * @par List of Functions: |
| * - ih264e_generate_nal_unit_header() |
| * - ih264e_generate_sps() |
| * - ih264e_generate_pps() |
| * - ih264e_generate_slice_header() |
| * - ih264e_get_level() |
| * - ih264e_populate_sps() |
| * - ih264e_populate_pps() |
| * - ih264e_populate_slice_header() |
| * - ih264e_add_filler_nal_unit() |
| * |
| * @remarks |
| * None |
| * |
| ******************************************************************************* |
| */ |
| |
| /*****************************************************************************/ |
| /* File Includes */ |
| /*****************************************************************************/ |
| |
| /* System include files */ |
| #include <stdio.h> |
| #include <stddef.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <assert.h> |
| |
| /* User Include Files */ |
| #include "ih264_typedefs.h" |
| #include "iv2.h" |
| #include "ive2.h" |
| #include "ih264e.h" |
| #include "ithread.h" |
| #include "ih264e_config.h" |
| #include "ih264e_trace.h" |
| #include "ih264e_error.h" |
| #include "ih264e_bitstream.h" |
| #include "ih264_debug.h" |
| #include "ih264_defs.h" |
| #include "ime_distortion_metrics.h" |
| #include "ime_defs.h" |
| #include "ime_structs.h" |
| #include "ih264_error.h" |
| #include "ih264_structs.h" |
| #include "ih264_trans_quant_itrans_iquant.h" |
| #include "ih264_inter_pred_filters.h" |
| #include "ih264_mem_fns.h" |
| #include "ih264_padding.h" |
| #include "ih264_intra_pred_filters.h" |
| #include "ih264_deblk_edge_filters.h" |
| #include "ih264_cabac_tables.h" |
| #include "ih264e_defs.h" |
| #include "irc_cntrl_param.h" |
| #include "irc_frame_info_collector.h" |
| #include "ih264e_rate_control.h" |
| #include "ih264e_cabac_structs.h" |
| #include "ih264e_structs.h" |
| #include "ih264e_encode_header.h" |
| #include "ih264_common_tables.h" |
| #include "ih264_macros.h" |
| #include "ih264e_utils.h" |
| |
| |
| /*****************************************************************************/ |
| /* Function Definitions */ |
| /*****************************************************************************/ |
| |
| /** |
| ****************************************************************************** |
| * |
| * @brief Generate nal unit header in the stream as per section 7.4.1 |
| * |
| * @par Description |
| * Inserts Nal unit header syntax as per section 7.4.1 |
| * |
| * @param[inout] ps_bitstrm |
| * pointer to bitstream context (handle) |
| * |
| * @param[in] nal_unit_type |
| * nal type to be inserted |
| * |
| * @param[in] nal_ref_idc |
| * nal ref idc to be inserted |
| * |
| * @return success or failure error code |
| * |
| ****************************************************************************** |
| */ |
| static WORD32 ih264e_generate_nal_unit_header(bitstrm_t *ps_bitstrm, |
| WORD32 nal_unit_type, |
| WORD32 nal_ref_idc) |
| { |
| WORD32 return_status = IH264E_SUCCESS; |
| |
| /* sanity checks */ |
| ASSERT((nal_unit_type > 0) && (nal_unit_type < 32)); |
| |
| /* forbidden_zero_bit + nal_ref_idc + nal_unit_type */ |
| PUT_BITS(ps_bitstrm, |
| ((nal_ref_idc << 5) + nal_unit_type), |
| (1+2+5), /*1 forbidden zero bit + 2 nal_ref_idc + 5 nal_unit_type */ |
| return_status, |
| "nal_unit_header"); |
| |
| return(return_status); |
| } |
| |
| /** |
| ****************************************************************************** |
| * |
| * @brief Generates SPS (Sequence Parameter Set) |
| * |
| * @par Description |
| * This function generates Sequence Parameter Set header as per the spec |
| * |
| * @param[in] ps_bitstrm |
| * pointer to bitstream context (handle) |
| * |
| * @param[in] ps_sps |
| * pointer to structure containing SPS data |
| * |
| * @return success or failure error code |
| * |
| ****************************************************************************** |
| */ |
| WORD32 ih264e_generate_sps(bitstrm_t *ps_bitstrm, sps_t *ps_sps) |
| { |
| WORD32 return_status = IH264E_SUCCESS; |
| WORD32 i; |
| WORD8 i1_nal_unit_type = 7; |
| WORD8 i1_nal_ref_idc = 3; |
| |
| /* Insert Start Code */ |
| return_status |= ih264e_put_nal_start_code_prefix(ps_bitstrm, 1); |
| |
| /* Insert Nal Unit Header */ |
| return_status |= ih264e_generate_nal_unit_header(ps_bitstrm, i1_nal_unit_type, i1_nal_ref_idc); |
| |
| /* profile_idc */ |
| PUT_BITS(ps_bitstrm, ps_sps->u1_profile_idc, 8, return_status, "profile_idc"); |
| |
| /* constrained_set_flags */ |
| PUT_BITS(ps_bitstrm, ps_sps->u1_constraint_set0_flag, 1, return_status, "constrained_set0_flag"); |
| PUT_BITS(ps_bitstrm, ps_sps->u1_constraint_set1_flag, 1, return_status, "constrained_set1_flag"); |
| PUT_BITS(ps_bitstrm, ps_sps->u1_constraint_set2_flag, 1, return_status, "constrained_set2_flag"); |
| PUT_BITS(ps_bitstrm, ps_sps->u1_constraint_set3_flag, 1, return_status, "constrained_set3_flag"); |
| |
| /* reserved_zero_four_bits */ |
| PUT_BITS(ps_bitstrm, 0, 4, return_status, "reserved_zero_four_bits"); |
| |
| /* level_idc */ |
| PUT_BITS(ps_bitstrm, ps_sps->u1_level_idc, 8, return_status, "level_idc"); |
| |
| /* seq_parameter_set_id */ |
| PUT_BITS_UEV(ps_bitstrm, ps_sps->u1_sps_id, return_status, "seq_parameter_set_id"); |
| |
| if (ps_sps->u1_profile_idc >= IH264_PROFILE_HIGH) |
| { |
| /* chroma_format_idc */ |
| PUT_BITS_UEV(ps_bitstrm, ps_sps->u1_chroma_format_idc, return_status, "chroma_format_idc"); |
| |
| if (ps_sps->u1_chroma_format_idc == CHROMA_FMT_IDC_YUV444) |
| { |
| /* i1_residual_colour_transform_flag */ |
| PUT_BITS(ps_bitstrm, ps_sps->i1_residual_colour_transform_flag, 1, return_status, "i1_residual_colour_transform_flag"); |
| } |
| |
| /* bit_depth_luma_minus8 */ |
| PUT_BITS_UEV(ps_bitstrm, (ps_sps->i1_bit_depth_luma - 8), return_status, "bit_depth_luma_minus8"); |
| |
| /* bit_depth_chroma_minus8 */ |
| PUT_BITS_UEV(ps_bitstrm, (ps_sps->i1_bit_depth_chroma - 8), return_status, "bit_depth_chroma_minus8"); |
| |
| /* qpprime_y_zero_transform_bypass_flag */ |
| PUT_BITS(ps_bitstrm, ps_sps->i1_qpprime_y_zero_transform_bypass_flag, 1, return_status, "qpprime_y_zero_transform_bypass_flag"); |
| |
| /* seq_scaling_matrix_present_flag */ |
| PUT_BITS(ps_bitstrm, ps_sps->i1_seq_scaling_matrix_present_flag, 1, return_status, "seq_scaling_matrix_present_flag"); |
| |
| /* seq_scaling_list */ |
| if (ps_sps->i1_seq_scaling_matrix_present_flag) |
| { |
| /* TODO_LATER: Will be enabled once scaling list support is added */ |
| } |
| } |
| |
| /* log2_max_frame_num_minus4 */ |
| PUT_BITS_UEV(ps_bitstrm, (ps_sps->i1_log2_max_frame_num - 4), return_status, "log2_max_frame_num_minus4"); |
| |
| /* pic_order_cnt_type */ |
| PUT_BITS_UEV(ps_bitstrm, ps_sps->i1_pic_order_cnt_type, return_status, "pic_order_cnt_type"); |
| |
| if (ps_sps->i1_pic_order_cnt_type == 0) |
| { |
| /* log2_max_pic_order_cnt_lsb_minus4 */ |
| PUT_BITS_UEV(ps_bitstrm, (ps_sps->i1_log2_max_pic_order_cnt_lsb - 4), return_status, "log2_max_pic_order_cnt_lsb_minus4"); |
| } |
| else if (ps_sps->i1_pic_order_cnt_type == 1) |
| { |
| /* delta_pic_order_always_zero_flag */ |
| PUT_BITS(ps_bitstrm, ps_sps->i1_delta_pic_order_always_zero_flag, 1, return_status, "delta_pic_order_always_zero_flag"); |
| |
| /* offset_for_non_ref_pic */ |
| PUT_BITS_SEV(ps_bitstrm, ps_sps->i4_offset_for_non_ref_pic, return_status, "offset_for_non_ref_pic"); |
| |
| /* offset_for_top_to_bottom_field */ |
| PUT_BITS_SEV(ps_bitstrm, ps_sps->i4_offset_for_top_to_bottom_field, return_status, "offset_for_top_to_bottom_field"); |
| |
| /* num_ref_frames_in_pic_order_cnt_cycle */ |
| PUT_BITS_UEV(ps_bitstrm, ps_sps->u1_num_ref_frames_in_pic_order_cnt_cycle, return_status, "num_ref_frames_in_pic_order_cnt_cycle"); |
| |
| /* Offset for ref frame */ |
| for (i=0; i<ps_sps->u1_num_ref_frames_in_pic_order_cnt_cycle; i++) |
| { |
| /* offset_for_ref_frame */ |
| PUT_BITS_SEV(ps_bitstrm, ps_sps->ai4_offset_for_ref_frame[i], return_status, "offset_for_ref_frame"); |
| } |
| } |
| |
| /* num_ref_frames */ |
| PUT_BITS_UEV(ps_bitstrm, ps_sps->u1_max_num_ref_frames, return_status, "num_ref_frames"); |
| |
| /* gaps_in_frame_num_value_allowed_flag */ |
| PUT_BITS(ps_bitstrm, ps_sps->i1_gaps_in_frame_num_value_allowed_flag, 1, return_status, "gaps_in_frame_num_value_allowed_flag"); |
| |
| /* pic_width_in_mbs_minus1 */ |
| PUT_BITS_UEV(ps_bitstrm, ps_sps->i2_pic_width_in_mbs_minus1, return_status, "pic_width_in_mbs_minus1"); |
| |
| /* pic_height_in_map_units_minus1 */ |
| PUT_BITS_UEV(ps_bitstrm, ps_sps->i2_pic_height_in_map_units_minus1, return_status, "pic_height_in_map_units_minus1"); |
| |
| /* frame_mbs_only_flag */ |
| PUT_BITS(ps_bitstrm, ps_sps->i1_frame_mbs_only_flag, 1, return_status, "frame_mbs_only_flag"); |
| |
| if (!ps_sps->i1_frame_mbs_only_flag) |
| { |
| /* mb_adaptive_frame_field_flag */ |
| PUT_BITS(ps_bitstrm, ps_sps->i1_mb_adaptive_frame_field_flag, 1, return_status, "mb_adaptive_frame_field_flag"); |
| } |
| |
| /* direct_8x8_inference_flag */ |
| PUT_BITS(ps_bitstrm, ps_sps->i1_direct_8x8_inference_flag, 1, return_status, "direct_8x8_inference_flag"); |
| |
| /* frame_cropping_flag */ |
| PUT_BITS(ps_bitstrm, ps_sps->i1_frame_cropping_flag, 1, return_status, "frame_cropping_flag"); |
| |
| if (ps_sps->i1_frame_cropping_flag) |
| { |
| /* frame_crop_left_offset */ |
| PUT_BITS_UEV(ps_bitstrm, ps_sps->i2_frame_crop_left_offset, return_status, "frame_crop_left_offset"); |
| |
| /* frame_crop_right_offset */ |
| PUT_BITS_UEV(ps_bitstrm, ps_sps->i2_frame_crop_right_offset, return_status, "frame_crop_right_offset"); |
| |
| /* frame_crop_top_offset */ |
| PUT_BITS_UEV(ps_bitstrm, ps_sps->i2_frame_crop_top_offset, return_status, "frame_crop_top_offset"); |
| |
| /* frame_crop_bottom_offset */ |
| PUT_BITS_UEV(ps_bitstrm, ps_sps->i2_frame_crop_bottom_offset, return_status, "frame_crop_bottom_offset"); |
| } |
| |
| /* vui_parameters_present_flag */ |
| PUT_BITS(ps_bitstrm, ps_sps->i1_vui_parameters_present_flag, 1, return_status, "vui_parameters_present_flag"); |
| |
| if (ps_sps->i1_vui_parameters_present_flag) |
| { |
| /* Add vui parameters to the bitstream */; |
| } |
| |
| /* rbsp trailing bits */ |
| return_status |= ih264e_put_rbsp_trailing_bits(ps_bitstrm); |
| |
| return return_status; |
| } |
| |
| /** |
| ****************************************************************************** |
| * |
| * @brief Generates PPS (Picture Parameter Set) |
| * |
| * @par Description |
| * Generate Picture Parameter Set as per Section 7.3.2.2 |
| * |
| * @param[in] ps_bitstrm |
| * pointer to bitstream context (handle) |
| * |
| * @param[in] ps_pps |
| * pointer to structure containing PPS data |
| * |
| * @return success or failure error code |
| * |
| ****************************************************************************** |
| */ |
| WORD32 ih264e_generate_pps(bitstrm_t *ps_bitstrm, pps_t *ps_pps, sps_t *ps_sps) |
| { |
| WORD32 return_status = IH264E_SUCCESS; |
| |
| /* Insert the NAL start code */ |
| return_status |= ih264e_put_nal_start_code_prefix(ps_bitstrm, 1); |
| |
| /* Insert Nal Unit Header */ |
| PUT_BITS(ps_bitstrm, NAL_PPS_FIRST_BYTE, 8, return_status, "pps_header"); |
| |
| /* pic_parameter_set_id */ |
| PUT_BITS_UEV(ps_bitstrm, ps_pps->u1_pps_id, return_status, "pic_parameter_set_id"); |
| |
| /* seq_parameter_set_id */ |
| PUT_BITS_UEV(ps_bitstrm, ps_pps->u1_sps_id, return_status, "seq_parameter_set_id"); |
| |
| /* Entropy coding : 0-VLC; 1 - CABAC */ |
| PUT_BITS(ps_bitstrm, ps_pps->u1_entropy_coding_mode_flag, 1, return_status, "Entropy coding : 0-VLC; 1 - CABAC"); |
| |
| /* Pic order present flag */ |
| PUT_BITS(ps_bitstrm, ps_pps->u1_pic_order_present_flag, 1, return_status, "Pic order present flag"); |
| |
| /* Number of slice groups */ |
| PUT_BITS_UEV(ps_bitstrm, ps_pps->u1_num_slice_groups - 1, return_status, "Number of slice groups"); |
| |
| if (ps_pps->u1_num_slice_groups > 1) |
| { |
| /* TODO_LATER: Currently the number of slice groups minus 1 is 0. |
| * If this is not the case, we have to add Slice group map type to the bit stream*/ |
| } |
| |
| /* num_ref_idx_l0_default_active_minus1 */ |
| PUT_BITS_UEV(ps_bitstrm, ps_pps->i1_num_ref_idx_l0_default_active - 1, return_status, "num_ref_idx_l0_default_active_minus1"); |
| |
| /* num_ref_idx_l1_default_active_minus1 */ |
| PUT_BITS_UEV(ps_bitstrm, ps_pps->i1_num_ref_idx_l1_default_active - 1, return_status, "num_ref_idx_l1_default_active_minus1"); |
| |
| /* weighted_pred_flag */ |
| PUT_BITS(ps_bitstrm, ps_pps->i1_weighted_pred_flag, 1, return_status, "weighted_pred_flag"); |
| |
| /* weighted_bipred_flag */ |
| PUT_BITS(ps_bitstrm, ps_pps->i1_weighted_bipred_idc, 2, return_status, "weighted_bipred_idc"); |
| |
| /* pic_init_qp_minus26 */ |
| PUT_BITS_SEV(ps_bitstrm, ps_pps->i1_pic_init_qp - 26, return_status, "pic_init_qp_minus26"); |
| |
| /* pic_init_qs_minus26 */ |
| PUT_BITS_SEV(ps_bitstrm, ps_pps->i1_pic_init_qs - 26, return_status, "pic_init_qs_minus26"); |
| |
| /* chroma_qp_index_offset */ |
| PUT_BITS_SEV(ps_bitstrm, ps_pps->i1_chroma_qp_index_offset, return_status, "chroma_qp_index_offset"); |
| |
| /* deblocking_filter_control_present_flag */ |
| PUT_BITS(ps_bitstrm, ps_pps->i1_deblocking_filter_control_present_flag, 1, return_status, "deblocking_filter_control_present_flag"); |
| |
| /* constrained_intra_pred_flag */ |
| PUT_BITS(ps_bitstrm, ps_pps->i1_constrained_intra_pred_flag, 1, return_status, "constrained_intra_pred_flag"); |
| |
| /*redundant_pic_cnt_present_flag */ |
| PUT_BITS(ps_bitstrm, ps_pps->i1_redundant_pic_cnt_present_flag, 1, return_status, "redundant_pic_cnt_present_flag"); |
| |
| if (ps_sps->u1_profile_idc >= IH264_PROFILE_HIGH) |
| { |
| /* transform_8x8_mode_flag */ |
| PUT_BITS(ps_bitstrm, ps_pps->i1_transform_8x8_mode_flag, 1, return_status, "transform_8x8_mode_flag"); |
| |
| /* pic_scaling_matrix_present_flag */ |
| PUT_BITS(ps_bitstrm, ps_pps->i1_pic_scaling_matrix_present_flag, 1, return_status, "pic_scaling_matrix_present_flag"); |
| |
| if(ps_pps->i1_pic_scaling_matrix_present_flag) |
| { |
| /* TODO_LATER: Will be enabled once scaling list support is added */ |
| } |
| |
| /* Second chroma QP offset */ |
| PUT_BITS_SEV(ps_bitstrm, ps_pps->i1_second_chroma_qp_index_offset, return_status, "Second chroma QP offset"); |
| } |
| |
| return_status |= ih264e_put_rbsp_trailing_bits(ps_bitstrm); |
| |
| return return_status; |
| } |
| |
| /** |
| ****************************************************************************** |
| * |
| * @brief Generates Slice Header |
| * |
| * @par Description |
| * Generate Slice Header as per Section 7.3.5.1 |
| * |
| * @param[inout] ps_bitstrm |
| * pointer to bitstream context for generating slice header |
| * |
| * @param[in] ps_slice_hdr |
| * pointer to slice header params |
| * |
| * @param[in] ps_pps |
| * pointer to pps params referred by slice |
| * |
| * @param[in] ps_sps |
| * pointer to sps params referred by slice |
| * |
| * @param[out] ps_dup_bit_strm_ent_offset |
| * Bitstream struct to store bitstream state |
| * |
| * @param[out] pu4_first_slice_start_offset |
| * first slice offset is returned |
| * |
| * @return success or failure error code |
| * |
| ****************************************************************************** |
| */ |
| WORD32 ih264e_generate_slice_header(bitstrm_t *ps_bitstrm, |
| slice_header_t *ps_slice_hdr, |
| pps_t *ps_pps, |
| sps_t *ps_sps) |
| { |
| |
| WORD32 return_status = IH264E_SUCCESS; |
| |
| /* Insert start code */ |
| return_status |= ih264e_put_nal_start_code_prefix(ps_bitstrm, 1); |
| |
| /* Insert Nal Unit Header */ |
| return_status |= ih264e_generate_nal_unit_header(ps_bitstrm, ps_slice_hdr->i1_nal_unit_type, ps_slice_hdr->i1_nal_unit_idc); |
| |
| /* first_mb_in_slice */ |
| PUT_BITS_UEV(ps_bitstrm, ps_slice_hdr->u2_first_mb_in_slice, return_status, "first_mb_in_slice"); |
| |
| /* slice_type */ |
| PUT_BITS_UEV(ps_bitstrm, ps_slice_hdr->u1_slice_type, return_status, "slice_type"); |
| |
| /* pic_parameter_set_id */ |
| PUT_BITS_UEV(ps_bitstrm, ps_slice_hdr->u1_pps_id, return_status, "pic_parameter_set_id"); |
| |
| /* frame_num */ |
| PUT_BITS(ps_bitstrm, ps_slice_hdr->i4_frame_num, ps_sps->i1_log2_max_frame_num, return_status, "frame_num"); |
| |
| if (!ps_sps->i1_frame_mbs_only_flag) |
| { |
| /* field_pic_flag */ |
| PUT_BITS(ps_bitstrm, ps_slice_hdr->i1_field_pic_flag, 1, return_status, "field_pic_flag"); |
| |
| if(ps_slice_hdr->i1_field_pic_flag) |
| { |
| /* bottom_field_flag */ |
| PUT_BITS(ps_bitstrm, ps_slice_hdr->i1_bottom_field_flag, 1, return_status, "bottom_field_flag"); |
| } |
| } |
| |
| if (ps_slice_hdr->i1_nal_unit_type == 5) |
| { |
| /* u2_idr_pic_id */ |
| PUT_BITS_UEV(ps_bitstrm, ps_slice_hdr->u2_idr_pic_id, return_status, "u2_idr_pic_id"); |
| } |
| |
| if (ps_sps->i1_pic_order_cnt_type == 0) |
| { |
| /* pic_order_cnt_lsb */ |
| PUT_BITS(ps_bitstrm, ps_slice_hdr->i4_pic_order_cnt_lsb, ps_sps->i1_log2_max_pic_order_cnt_lsb, return_status, "pic_order_cnt_lsb"); |
| |
| if(ps_pps->u1_pic_order_present_flag && !ps_slice_hdr->i1_field_pic_flag) |
| { |
| /* delta_pic_order_cnt_bottom */ |
| PUT_BITS_SEV(ps_bitstrm, ps_slice_hdr->i4_delta_pic_order_cnt_bottom, return_status, "delta_pic_order_cnt_bottom"); |
| } |
| } |
| |
| if (ps_sps->i1_pic_order_cnt_type == 1 && !ps_sps->i1_delta_pic_order_always_zero_flag) |
| { |
| /* delta_pic_order_cnt[0] */ |
| PUT_BITS_SEV(ps_bitstrm, ps_slice_hdr->ai4_delta_pic_order_cnt[0], return_status, "delta_pic_order_cnt[0]"); |
| |
| if (ps_pps->u1_pic_order_present_flag && !ps_slice_hdr->i1_field_pic_flag) |
| { |
| /* delta_pic_order_cnt[1] */ |
| PUT_BITS_SEV(ps_bitstrm, ps_slice_hdr->ai4_delta_pic_order_cnt[1], return_status, "delta_pic_order_cnt[1]"); |
| } |
| } |
| |
| if (ps_pps->i1_redundant_pic_cnt_present_flag) |
| { |
| /* redundant_pic_cnt */ |
| PUT_BITS_UEV(ps_bitstrm, ps_slice_hdr->u1_redundant_pic_cnt, return_status, "redundant_pic_cnt"); |
| } |
| |
| if (ps_slice_hdr->u1_slice_type == BSLICE) |
| { |
| /* direct_spatial_mv_pred_flag */ |
| PUT_BITS(ps_bitstrm, ps_slice_hdr->u1_direct_spatial_mv_pred_flag, 1, return_status, "direct_spatial_mv_pred_flag"); |
| } |
| |
| if (ps_slice_hdr->u1_slice_type == PSLICE || ps_slice_hdr->u1_slice_type == SPSLICE || ps_slice_hdr->u1_slice_type == BSLICE) |
| { |
| /* num_ref_idx_active_override_flag */ |
| PUT_BITS(ps_bitstrm, ps_slice_hdr->u1_num_ref_idx_active_override_flag, 1, return_status, "num_ref_idx_active_override_flag"); |
| |
| if (ps_slice_hdr->u1_num_ref_idx_active_override_flag) |
| { |
| /* num_ref_idx_l0_active_minus1 */ |
| PUT_BITS_UEV(ps_bitstrm, ps_slice_hdr->i1_num_ref_idx_l0_active - 1, return_status, "num_ref_idx_l0_active_minus1"); |
| |
| if (ps_slice_hdr->u1_slice_type == BSLICE) |
| { |
| /* num_ref_idx_l1_active_minus1 */ |
| PUT_BITS_UEV(ps_bitstrm, ps_slice_hdr->i1_num_ref_idx_l1_active - 1, return_status, "num_ref_idx_l1_active_minus1"); |
| } |
| } |
| } |
| |
| /* ref_idx_reordering */ |
| /* TODO: ref_idx_reordering */ |
| if ((ps_slice_hdr->u1_slice_type != ISLICE) && (ps_slice_hdr->u1_slice_type != SISLICE)) |
| { |
| /* ref_pic_list_reordering_flag_l0 */ |
| PUT_BITS(ps_bitstrm, ps_slice_hdr->u1_ref_idx_reordering_flag_l0, 1, return_status, "ref_pic_list_reordering_flag_l0"); |
| |
| if (ps_slice_hdr->u1_ref_idx_reordering_flag_l0) |
| { |
| |
| } |
| } |
| |
| if (ps_slice_hdr->u1_slice_type == BSLICE) |
| { |
| /* ref_pic_list_reordering_flag_l1 */ |
| PUT_BITS(ps_bitstrm, ps_slice_hdr->u1_ref_idx_reordering_flag_l1, 1, return_status, "ref_pic_list_reordering_flag_l1"); |
| |
| if (ps_slice_hdr->u1_ref_idx_reordering_flag_l1) |
| { |
| |
| } |
| } |
| |
| if ((ps_pps->i1_weighted_pred_flag && |
| (ps_slice_hdr->u1_slice_type == PSLICE || ps_slice_hdr->u1_slice_type == SPSLICE)) || |
| (ps_slice_hdr->u1_slice_type == BSLICE && ps_pps->i1_weighted_bipred_idc == 1)) |
| { |
| /* TODO_LATER: Currently there is no support for weighted prediction. |
| This needs to be updated when the support is added */ |
| } |
| |
| if (ps_slice_hdr->i1_nal_unit_idc != 0) |
| { |
| if (ps_slice_hdr->i1_nal_unit_type == 5) |
| { |
| /* no_output_of_prior_pics_flag */ |
| PUT_BITS(ps_bitstrm, ps_slice_hdr->u1_no_output_of_prior_pics_flag , 1, return_status, "no_output_of_prior_pics_flag "); |
| |
| /* long_term_reference_flag */ |
| PUT_BITS(ps_bitstrm, ps_slice_hdr->u1_long_term_reference_flag , 1, return_status, "long_term_reference_flag "); |
| } |
| else |
| { |
| /* adaptive_ref_pic_marking_mode_flag */ |
| PUT_BITS(ps_bitstrm, ps_slice_hdr->u1_adaptive_ref_pic_marking_mode_flag , 1, return_status, "adaptive_ref_pic_marking_mode_flag "); |
| |
| if (ps_slice_hdr->u1_adaptive_ref_pic_marking_mode_flag) |
| { |
| /* TODO: if the reference picture marking mode is adaptive |
| add these fields in the bit-stream */ |
| } |
| } |
| } |
| |
| if (ps_slice_hdr->u1_entropy_coding_mode_flag && ps_slice_hdr->u1_slice_type != ISLICE && |
| ps_slice_hdr->u1_slice_type != SISLICE) |
| { |
| /* cabac_init_idc */ |
| PUT_BITS_UEV(ps_bitstrm, ps_slice_hdr->i1_cabac_init_idc, return_status, "cabac_init_idc"); |
| } |
| |
| /* slice_qp_delta */ |
| PUT_BITS_SEV(ps_bitstrm, ps_slice_hdr->i1_slice_qp - ps_pps->i1_pic_init_qp, return_status, "slice_qp_delta"); |
| |
| if (ps_slice_hdr->u1_slice_type == SPSLICE || ps_slice_hdr->u1_slice_type == SISLICE) |
| { |
| if (ps_slice_hdr->u1_slice_type == SPSLICE) |
| { |
| /* sp_for_switch_flag */ |
| PUT_BITS(ps_bitstrm, ps_slice_hdr->u1_sp_for_switch_flag , 1, return_status, "sp_for_switch_flag"); |
| } |
| /* slice_qs_delta */ |
| PUT_BITS_SEV(ps_bitstrm, ps_slice_hdr->u1_slice_qs - ps_pps->i1_pic_init_qs, return_status, "slice_qs_delta"); |
| } |
| |
| if (ps_pps->i1_deblocking_filter_control_present_flag) |
| { |
| /* disable_deblocking_filter_idc */ |
| PUT_BITS_UEV(ps_bitstrm, ps_slice_hdr->u1_disable_deblocking_filter_idc, return_status, "disable_deblocking_filter_idc"); |
| |
| if(ps_slice_hdr->u1_disable_deblocking_filter_idc != 1) |
| { |
| /* slice_alpha_c0_offset_div2 */ |
| PUT_BITS_SEV(ps_bitstrm, ps_slice_hdr->i1_slice_alpha_c0_offset_div2, return_status, "slice_alpha_c0_offset_div2"); |
| |
| /* slice_beta_offset_div2 */ |
| PUT_BITS_SEV(ps_bitstrm, ps_slice_hdr->i1_slice_beta_offset_div2, return_status, "slice_beta_offset_div2"); |
| } |
| } |
| |
| if (ps_slice_hdr->u1_num_slice_groups_minus1 > 0 && |
| ps_pps->u1_slice_group_map_type >= 3 && |
| ps_pps->u1_slice_group_map_type <= 5) |
| { |
| /* slice_group_change_cycle */ |
| /* TODO_LATER: Currently the number of slice groups minus 1 is 0. |
| * If this is not the case, we have to add Slice group map type to the bit stream */ |
| } |
| |
| return return_status; |
| } |
| |
| |
| |
| /** |
| ****************************************************************************** |
| * |
| * @brief Populates sps structure |
| * |
| * @par Description |
| * Populates sps structure for its use in header generation |
| * |
| * @param[in] ps_codec |
| * pointer to encoder context |
| * |
| * @param[out] ps_sps |
| * pointer to sps params that needs to be populated |
| * |
| * @return success or failure error code |
| * |
| ****************************************************************************** |
| */ |
| IH264E_ERROR_T ih264e_populate_sps(codec_t *ps_codec, sps_t *ps_sps) |
| { |
| /* active config parameters */ |
| cfg_params_t *ps_cfg = &(ps_codec->s_cfg); |
| |
| // /* level */ |
| // IH264_LEVEL_T level_idc; |
| |
| /* error_status */ |
| IH264E_ERROR_T i4_err_code = IH264E_FAIL; |
| |
| /* profile */ |
| /* |
| * Baseline profile supports, 8 bits per sample, 4:2:0 format, CAVLC. |
| * B frames are not allowed. Further, Flexible mb ordering, Redundant slices, Arbitrary slice ordering are supported. |
| * The constrained baseline profile is baseline profile minus ASO, FMO and redundant slices. |
| * To the constrained baseline profile if we add support for B slices, support for encoding interlaced frames, |
| * support for weighted prediction and introduce CABAC entropy coding then we have Main Profile. |
| */ |
| if ((ps_cfg->u4_num_bframes) || (ps_cfg->e_content_type != IV_PROGRESSIVE) || |
| (ps_cfg->u4_entropy_coding_mode == CABAC) || (ps_cfg->u4_weighted_prediction)) |
| { |
| ps_sps->u1_profile_idc = IH264_PROFILE_MAIN; |
| } |
| else |
| { |
| ps_sps->u1_profile_idc = IH264_PROFILE_BASELINE; |
| } |
| |
| /* level */ |
| ps_sps->u1_level_idc = MAX(ps_cfg->u4_max_level, |
| (UWORD32)ih264e_get_min_level(ps_cfg->u4_max_wd, ps_cfg->u4_max_ht)); |
| |
| /* constrained flags */ |
| /* |
| * baseline profile automatically implies set 0 flag |
| */ |
| ps_sps->u1_constraint_set0_flag = (ps_sps->u1_profile_idc == IH264_PROFILE_BASELINE); |
| /* |
| * main profile automatically implies set 1 flag |
| * Although the encoder says it supports Baseline profile it actually supports constrained |
| * baseline profile as ASO, FMO and redundant slices are not supported |
| */ |
| ps_sps->u1_constraint_set1_flag = (ps_sps->u1_profile_idc <= IH264_PROFILE_MAIN); |
| /* |
| * extended profile is not supported |
| */ |
| ps_sps->u1_constraint_set2_flag = 0x00; |
| /* |
| * level 1b or level 11 |
| */ |
| if (ps_sps->u1_level_idc == IH264_LEVEL_1B) |
| { |
| ps_sps->u1_constraint_set3_flag = 0; |
| ps_sps->u1_level_idc = IH264_LEVEL_11; |
| } |
| else |
| { |
| ps_sps->u1_constraint_set3_flag = 0; |
| } |
| |
| /* active sps id */ |
| ps_sps->u1_sps_id = ps_codec->i4_sps_id; |
| |
| if (ps_sps->u1_profile_idc >= IH264_PROFILE_HIGH) |
| { |
| /* chroma format idc */ |
| ps_sps->u1_chroma_format_idc = CHROMA_FMT_IDC_YUV420; |
| |
| /* residual_colour_transform_flag */ |
| ps_sps->i1_residual_colour_transform_flag = 0; |
| |
| /* luma bit depth 8 */ |
| ps_sps->i1_bit_depth_luma = 8; |
| |
| /* chroma bit depth 8 */ |
| ps_sps->i1_bit_depth_chroma = 8; |
| |
| /* qpprime_y_zero_transform_bypass_flag */ |
| ps_sps->i1_qpprime_y_zero_transform_bypass_flag = 0; |
| |
| /* seq_scaling_matrix_present_flag */ |
| ps_sps->i1_seq_scaling_matrix_present_flag = 0; |
| |
| if (ps_sps->i1_seq_scaling_matrix_present_flag) |
| { |
| /* TODO_LATER: Will be enabled once scaling list support is added */ |
| } |
| } |
| |
| /* log2_max_frame_num_minus4 */ |
| ps_sps->i1_log2_max_frame_num = 16; |
| |
| /* pic_order_cnt_type */ |
| ps_sps->i1_pic_order_cnt_type = 2; |
| |
| if (ps_codec->i4_non_ref_frames_in_stream) |
| { |
| ps_sps->i1_pic_order_cnt_type = 0; |
| } |
| |
| /* log2_max_pic_order_cnt_lsb_minus4 */ |
| ps_sps->i1_log2_max_pic_order_cnt_lsb = 8; |
| |
| /* TODO : add support for other poc types */ |
| if (ps_sps->i1_pic_order_cnt_type == 0) |
| { |
| |
| } |
| else if (ps_sps->i1_pic_order_cnt_type == 1) |
| { |
| |
| } |
| |
| /* num_ref_frames */ |
| /* TODO : Should we have a flexible num ref frames */ |
| if (ps_codec->s_cfg.u4_num_bframes > 0) |
| { |
| ps_sps->u1_max_num_ref_frames = 2; |
| } |
| else |
| { |
| ps_sps->u1_max_num_ref_frames = 1; |
| } |
| |
| /* gaps_in_frame_num_value_allowed_flag */ |
| ps_sps->i1_gaps_in_frame_num_value_allowed_flag = 0; |
| |
| /* pic width in mb - 1 */ |
| ps_sps->i2_pic_width_in_mbs_minus1 = ps_cfg->i4_wd_mbs - 1; |
| |
| /* pic height in mb - 1 */ |
| ps_sps->i2_pic_height_in_map_units_minus1 = ps_cfg->i4_ht_mbs - 1;; |
| |
| /* frame_mbs_only_flag, no support for interlace encoding */ |
| ps_sps->i1_frame_mbs_only_flag = 1; |
| |
| /* mb_adaptive_frame_field_flag */ |
| if (ps_sps->i1_frame_mbs_only_flag == 0) |
| { |
| ps_sps->i1_mb_adaptive_frame_field_flag = 0; |
| } |
| |
| /* direct_8x8_inference_flag */ |
| ps_sps->i1_direct_8x8_inference_flag = 0; |
| |
| /* cropping params */ |
| /*NOTE : Cropping values depend on the chroma format |
| * For our case ,decoder interprets the cropping values as 2*num pixels |
| * Hence the difference in the disp width and width must be halved before sending |
| * to get the expected results |
| */ |
| ps_sps->i1_frame_cropping_flag = 0; |
| ps_sps->i2_frame_crop_left_offset = 0; |
| ps_sps->i2_frame_crop_right_offset = (ps_codec->s_cfg.u4_wd - ps_codec->s_cfg.u4_disp_wd)>>1; |
| ps_sps->i2_frame_crop_top_offset = 0; |
| ps_sps->i2_frame_crop_bottom_offset = (ps_codec->s_cfg.u4_ht - ps_codec->s_cfg.u4_disp_ht)>>1; |
| |
| if (ps_sps->i2_frame_crop_left_offset || |
| ps_sps->i2_frame_crop_right_offset || |
| ps_sps->i2_frame_crop_top_offset || |
| ps_sps->i2_frame_crop_bottom_offset) |
| { |
| ps_sps->i1_frame_cropping_flag = 1; |
| } |
| |
| /* vui params */ |
| ps_sps->i1_vui_parameters_present_flag = 0; |
| |
| if (ps_sps->i1_vui_parameters_present_flag) |
| { |
| /* populate vui params */ |
| } |
| |
| return i4_err_code; |
| } |
| |
| /** |
| ****************************************************************************** |
| * |
| * @brief Populates pps structure |
| * |
| * @par Description |
| * Populates pps structure for its use in header generation |
| * |
| * @param[in] ps_codec |
| * pointer to encoder context |
| * |
| * @param[out] ps_pps |
| * pointer to pps params that needs to be populated |
| * |
| * @return success or failure error code |
| * |
| ****************************************************************************** |
| */ |
| IH264E_ERROR_T ih264e_populate_pps(codec_t *ps_codec, pps_t *ps_pps) |
| { |
| /* active config parameters */ |
| cfg_params_t *ps_cfg = &(ps_codec->s_cfg); |
| |
| /* seq_parameter_set_id */ |
| ps_pps->u1_sps_id = ps_codec->i4_sps_id; |
| |
| /* pic_parameter_set_id */ |
| ps_pps->u1_pps_id = ps_codec->i4_pps_id; |
| |
| /* entropy_coding_mode */ |
| ps_pps->u1_entropy_coding_mode_flag = ps_cfg->u4_entropy_coding_mode; |
| |
| /* pic_order_present_flag is unset if we don't have feilds */ |
| ps_pps->u1_pic_order_present_flag = 0; |
| |
| /* Currently number of slice groups supported are 1 */ |
| ps_pps->u1_num_slice_groups = 1; |
| |
| if (ps_pps->u1_num_slice_groups - 1) |
| { |
| /* TODO_LATER: Currently the number of slice groups minus 1 is 0. |
| * If this is not the case, we have to add Slice group map type to the bit stream*/ |
| } |
| |
| /* number of reference frames for list 0 */ |
| /* FIXME : fix this hard coded value */ |
| ps_pps->i1_num_ref_idx_l0_default_active = 1; |
| |
| /* number of reference frames for list 1 */ |
| ps_pps->i1_num_ref_idx_l1_default_active = 1; |
| |
| /* weighted prediction for now is disabled */ |
| ps_pps->i1_weighted_pred_flag = 0; |
| ps_pps->i1_weighted_bipred_idc = 0; |
| |
| /* The intent is to not signal qp from pps. Rather send the same in slice headers */ |
| ps_pps->i1_pic_init_qp = 0; |
| |
| /* The intent is to not signal qp from pps. Rather send the same in slice headers */ |
| ps_pps->i1_pic_init_qs = 0; |
| |
| /* The intent is to not signal qp from pps. Rather send the same in slice headers */ |
| ps_pps->i1_chroma_qp_index_offset = 0; |
| |
| /* deblocking filter flags present in slice header */ |
| ps_pps->i1_deblocking_filter_control_present_flag = 1; |
| |
| /* constrained intra prediction */ |
| ps_pps->i1_constrained_intra_pred_flag = ps_cfg->u4_constrained_intra_pred; |
| |
| /* sending redundant slices is not supported for now */ |
| ps_pps->i1_redundant_pic_cnt_present_flag = 0; |
| |
| ps_pps->u1_slice_group_map_type = 0; |
| return IH264E_SUCCESS; |
| } |
| |
| /** |
| ****************************************************************************** |
| * |
| * @brief Populates slice header structure |
| * |
| * @par Description |
| * Populates slice header structure for its use in header generation |
| * |
| * @param[in] ps_proc |
| * pointer to proc context |
| * |
| * @param[out] ps_slice_hdr |
| * pointer to slice header structure that needs to be populated |
| * |
| * @param[in] ps_pps |
| * pointer to pps params structure referred by the slice |
| * |
| * @param[in] ps_sps |
| * pointer to sps params referred by the pps |
| * |
| * @return success or failure error code |
| * |
| ****************************************************************************** |
| */ |
| WORD32 ih264e_populate_slice_header(process_ctxt_t *ps_proc, |
| slice_header_t *ps_slice_hdr, |
| pps_t *ps_pps, |
| sps_t *ps_sps) |
| { |
| /* entropy context */ |
| entropy_ctxt_t *ps_entropy = &ps_proc->s_entropy; |
| |
| codec_t *ps_codec = ps_proc->ps_codec; |
| |
| if (ps_proc->ps_codec->u4_is_curr_frm_ref) |
| { |
| ps_slice_hdr->i1_nal_unit_idc = 3; |
| } |
| else |
| { |
| ps_slice_hdr->i1_nal_unit_idc = 0; |
| } |
| |
| /* start mb address */ |
| ps_slice_hdr->u2_first_mb_in_slice = ps_entropy->i4_mb_start_add; |
| |
| /* slice type */ |
| ps_slice_hdr->u1_slice_type = ps_proc->i4_slice_type; |
| |
| /* pic_parameter_set_id */ |
| ps_slice_hdr->u1_pps_id = ps_pps->u1_pps_id; |
| |
| /* Separate color plane flag is 0, |
| * hence the syntax element color_plane_id not included */ |
| |
| /* frame num */ |
| ps_slice_hdr->i4_frame_num = ps_proc->i4_frame_num; |
| |
| /* frame_mbs_only_flag, no support for interlace encoding */ |
| if (!ps_sps->i1_frame_mbs_only_flag) |
| { |
| ps_slice_hdr->i1_field_pic_flag = 0; |
| |
| if (ps_slice_hdr->i1_field_pic_flag) |
| { |
| ps_slice_hdr->i1_bottom_field_flag = 0; |
| } |
| } |
| |
| /* idr pic id */ |
| if (ps_proc->u4_is_idr) |
| { |
| ps_slice_hdr->u2_idr_pic_id = ps_proc->u4_idr_pic_id; |
| ps_slice_hdr->i1_nal_unit_type = 5; |
| } |
| else |
| { |
| ps_slice_hdr->i1_nal_unit_type = 1; |
| } |
| |
| if (ps_sps->i1_pic_order_cnt_type == 0) |
| { |
| |
| WORD32 i4_poc; |
| i4_poc = ps_codec->i4_poc; |
| i4_poc %= (1 << ps_sps->i1_log2_max_pic_order_cnt_lsb); |
| ps_slice_hdr->i4_pic_order_cnt_lsb = i4_poc; |
| } |
| /* TODO add support for poc type 1 */ |
| else if (ps_sps->i1_pic_order_cnt_type == 1) |
| { |
| |
| } |
| |
| |
| /* |
| * redundant slices are not currently supported. |
| * Hence the syntax element redundant slice cnt is not initialized |
| */ |
| if (ps_pps->i1_redundant_pic_cnt_present_flag) |
| { |
| |
| } |
| |
| /* direct spatial mv pred flag */ |
| if (ps_proc->i4_slice_type == BSLICE) |
| { |
| ps_slice_hdr->u1_direct_spatial_mv_pred_flag = 1; |
| } |
| |
| if (ps_proc->i4_slice_type == PSLICE || ps_proc->i4_slice_type == SPSLICE || ps_proc->i4_slice_type == BSLICE) |
| { |
| /* num_ref_idx_active_override_flag */ |
| ps_slice_hdr->u1_num_ref_idx_active_override_flag = 0; |
| |
| if (ps_slice_hdr->u1_num_ref_idx_active_override_flag) |
| { |
| /* num_ref_idx_l0_active_minus1 */ |
| |
| if (ps_proc->i4_slice_type == BSLICE) |
| { |
| /* num_ref_idx_l1_active_minus1 */ |
| |
| } |
| } |
| } |
| |
| /* ref_idx_reordering */ |
| /* TODO: ref_idx_reordering */ |
| if ((ps_proc->i4_slice_type != ISLICE) && (ps_proc->i4_slice_type != SISLICE)) |
| { |
| /* ref_pic_list_reordering_flag_l0 */ |
| ps_slice_hdr->u1_ref_idx_reordering_flag_l0 = 0; |
| |
| if (ps_slice_hdr->u1_ref_idx_reordering_flag_l0) |
| { |
| |
| } |
| |
| /* ref_pic_list_reordering_flag_l1 */ |
| ps_slice_hdr->u1_ref_idx_reordering_flag_l1 = 0; |
| |
| if (ps_slice_hdr->u1_ref_idx_reordering_flag_l1) |
| { |
| |
| } |
| } |
| |
| |
| /* Currently we do not support weighted pred */ |
| /* ps_slice_hdr->u1_weighted_bipred_idc = 0; */ |
| |
| if ((ps_pps->i1_weighted_pred_flag && |
| (ps_proc->i4_slice_type == PSLICE || ps_proc->i4_slice_type == SPSLICE)) || |
| (ps_proc->i4_slice_type == BSLICE && ps_pps->i1_weighted_bipred_idc == 1)) |
| { |
| /* TODO_LATER: Currently there is no support for weighted prediction. |
| This needs to be updated when the support is added */ |
| } |
| |
| if (ps_slice_hdr->i1_nal_unit_idc != 0) |
| { |
| if (ps_slice_hdr->i1_nal_unit_type == 5) |
| { |
| /* no_output_of_prior_pics_flag */ |
| ps_slice_hdr->u1_no_output_of_prior_pics_flag = 0; |
| |
| /* long_term_reference_flag */ |
| ps_slice_hdr->u1_long_term_reference_flag = 0; |
| } |
| else |
| { |
| /* adaptive_ref_pic_marking_mode_flag */ |
| ps_slice_hdr->u1_adaptive_ref_pic_marking_mode_flag = 0; |
| |
| if (ps_slice_hdr->u1_adaptive_ref_pic_marking_mode_flag) |
| { |
| /* TODO: if the reference picture marking mode is adaptive |
| add these fields in the bit-stream */ |
| } |
| } |
| } |
| |
| /* entropy coding mode flag */ |
| ps_slice_hdr->u1_entropy_coding_mode_flag = ps_entropy->u1_entropy_coding_mode_flag; |
| |
| if (ps_slice_hdr->u1_entropy_coding_mode_flag && ps_proc->i4_slice_type != ISLICE && |
| ps_proc->i4_slice_type != SISLICE) |
| { |
| /* cabac_init_idc */ |
| } |
| |
| /* slice qp */ |
| ps_slice_hdr->i1_slice_qp = ps_proc->u4_frame_qp; |
| |
| if (ps_proc->i4_slice_type == SPSLICE || ps_proc->i4_slice_type == SISLICE) |
| { |
| if (ps_proc->i4_slice_type == SPSLICE) |
| { |
| /* sp_for_switch_flag */ |
| } |
| /* slice_qs_delta */ |
| } |
| |
| if (ps_pps->i1_deblocking_filter_control_present_flag) |
| { |
| /* disable_deblocking_filter_idc */ |
| ps_slice_hdr->u1_disable_deblocking_filter_idc = ps_proc->u4_disable_deblock_level; |
| |
| if (ps_slice_hdr->u1_disable_deblocking_filter_idc != 1) |
| { |
| /* slice_alpha_c0_offset_div2 */ |
| ps_slice_hdr->i1_slice_alpha_c0_offset_div2 = 0; |
| |
| /* slice_beta_offset_div2 */ |
| ps_slice_hdr->i1_slice_beta_offset_div2 = 0; |
| } |
| } |
| ps_slice_hdr->u1_num_slice_groups_minus1 = 0; |
| if(ps_slice_hdr->u1_num_slice_groups_minus1 > 0 && |
| ps_pps->u1_slice_group_map_type >= 3 && |
| ps_pps->u1_slice_group_map_type <= 5) |
| { |
| /* slice_group_change_cycle */ |
| /* TODO_LATER: Currently the number of slice groups minus 1 is 0. |
| * If this is not the case, we have to add Slice group map type to the bit stream */ |
| } |
| |
| ps_slice_hdr->i1_cabac_init_idc = CABAC_INIT_IDC; |
| |
| return IH264E_SUCCESS; |
| } |
| |
| /** |
| ****************************************************************************** |
| * |
| * @brief inserts FILLER Nal Unit. |
| * |
| * @par Description |
| * In constant bit rate rc mode, when the bits generated by the codec is |
| * underflowing the target bit rate, the encoder library inserts filler nal unit. |
| * |
| * @param[in] ps_bitstrm |
| * pointer to bitstream context (handle) |
| * |
| * @param[in] insert_fill_bytes |
| * Number of fill bytes to be inserted |
| * |
| * @return success or failure error code |
| * |
| ****************************************************************************** |
| */ |
| IH264E_ERROR_T ih264e_add_filler_nal_unit(bitstrm_t *ps_bitstrm, |
| WORD32 insert_fill_bytes) |
| { |
| WORD32 i4_num_words_to_fill, i4_words_filled; |
| |
| IH264E_ERROR_T return_status = IH264E_SUCCESS; |
| |
| /* Insert the NAL start code */ |
| return_status |= ih264e_put_nal_start_code_prefix(ps_bitstrm, 1); |
| |
| if (ps_bitstrm->u4_strm_buf_offset + insert_fill_bytes >= ps_bitstrm->u4_max_strm_size) |
| { |
| return (IH264E_BITSTREAM_BUFFER_OVERFLOW); |
| } |
| |
| /* Insert Nal Unit Header */ |
| PUT_BITS(ps_bitstrm, NAL_FILLER_FIRST_BYTE, 8, return_status, "filler_header"); |
| |
| PUT_BITS(ps_bitstrm, 0xFFFFFF, 24, return_status, "fill bytes"); |
| |
| /* Initializing Variables */ |
| i4_words_filled = 1; |
| |
| /****************************************************/ |
| /* Flooring the number of bytes for be stuffed to */ |
| /* WORD unit */ |
| /****************************************************/ |
| i4_num_words_to_fill = (insert_fill_bytes >> 2); |
| |
| /****************************************************/ |
| /* Reducing already 4 bytes filled. In case stuffing*/ |
| /* is <= 4 bytes, we are actually not stuffing */ |
| /* anything */ |
| /****************************************************/ |
| i4_num_words_to_fill -= i4_words_filled; |
| |
| while (i4_num_words_to_fill > 0) |
| { |
| /* Insert Nal Unit Header */ |
| PUT_BITS(ps_bitstrm, 0xFFFFFFFF, 32, return_status, "fill bytes"); |
| |
| i4_num_words_to_fill-- ; |
| } |
| |
| return_status |= ih264e_put_rbsp_trailing_bits(ps_bitstrm); |
| |
| return return_status; |
| } |
| |
