set.c
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上传日期:2021-12-09
资源大小:5084k
文件大小:8k
源码类别:
Audio
开发平台:
Visual C++
- /*****************************************************************************
- * x264: h264 decoder
- *****************************************************************************
- * Copyright (C) 2003 Laurent Aimar
- * $Id: set.c,v 1.1 2004/06/03 19:27:07 fenrir Exp $
- *
- * Authors: Laurent Aimar <fenrir@via.ecp.fr>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
- *****************************************************************************/
- #include <stdlib.h>
- #include <stdio.h>
- #include <string.h>
- #include <stdint.h>
- #include "common/common.h"
- #include "set.h"
- /* return -1 if invalid, else the id */
- int x264_sps_read( bs_t *s, x264_sps_t sps_array[32] )
- {
- x264_sps_t *sps;
- int i_profile_idc;
- int i_level_idc;
- int b_constraint_set0;
- int b_constraint_set1;
- int b_constraint_set2;
- int id;
- i_profile_idc = bs_read( s, 8 );
- b_constraint_set0 = bs_read( s, 1 );
- b_constraint_set1 = bs_read( s, 1 );
- b_constraint_set2 = bs_read( s, 1 );
- bs_skip( s, 5 ); /* reserved */
- i_level_idc = bs_read( s, 8 );
- id = bs_read_ue( s );
- if( bs_eof( s ) || id >= 32 )
- {
- /* the sps is invalid, no need to corrupt sps_array[0] */
- return -1;
- }
- sps = &sps_array[id];
- sps->i_id = id;
- /* put pack parsed value */
- sps->i_profile_idc = i_profile_idc;
- sps->i_level_idc = i_level_idc;
- sps->b_constraint_set0 = b_constraint_set0;
- sps->b_constraint_set1 = b_constraint_set1;
- sps->b_constraint_set2 = b_constraint_set2;
- sps->i_log2_max_frame_num = bs_read_ue( s ) + 4;
- sps->i_poc_type = bs_read_ue( s );
- if( sps->i_poc_type == 0 )
- {
- sps->i_log2_max_poc_lsb = bs_read_ue( s ) + 4;
- }
- else if( sps->i_poc_type == 1 )
- {
- int i;
- sps->b_delta_pic_order_always_zero = bs_read( s, 1 );
- sps->i_offset_for_non_ref_pic = bs_read_se( s );
- sps->i_offset_for_top_to_bottom_field = bs_read_se( s );
- sps->i_num_ref_frames_in_poc_cycle = bs_read_ue( s );
- if( sps->i_num_ref_frames_in_poc_cycle > 256 )
- {
- /* FIXME what to do */
- sps->i_num_ref_frames_in_poc_cycle = 256;
- }
- for( i = 0; i < sps->i_num_ref_frames_in_poc_cycle; i++ )
- {
- sps->i_offset_for_ref_frame[i] = bs_read_se( s );
- }
- }
- else if( sps->i_poc_type > 2 )
- {
- goto error;
- }
- sps->i_num_ref_frames = bs_read_ue( s );
- sps->b_gaps_in_frame_num_value_allowed = bs_read( s, 1 );
- sps->i_mb_width = bs_read_ue( s ) + 1;
- sps->i_mb_height= bs_read_ue( s ) + 1;
- sps->b_frame_mbs_only = bs_read( s, 1 );
- if( !sps->b_frame_mbs_only )
- {
- sps->b_mb_adaptive_frame_field = bs_read( s, 1 );
- }
- else
- {
- sps->b_mb_adaptive_frame_field = 0;
- }
- sps->b_direct8x8_inference = bs_read( s, 1 );
- sps->b_crop = bs_read( s, 1 );
- if( sps->b_crop )
- {
- sps->crop.i_left = bs_read_ue( s );
- sps->crop.i_right = bs_read_ue( s );
- sps->crop.i_top = bs_read_ue( s );
- sps->crop.i_bottom= bs_read_ue( s );
- }
- else
- {
- sps->crop.i_left = 0;
- sps->crop.i_right = 0;
- sps->crop.i_top = 0;
- sps->crop.i_bottom= 0;
- }
- sps->b_vui = bs_read( s, 1 );
- if( sps->b_vui )
- {
- /* FIXME */
- }
- else
- {
- }
- if( bs_eof( s ) )
- {
- /* no rbsp trailing */
- fprintf( stderr, "incomplete SPSn" );
- goto error;
- }
- fprintf( stderr, "x264_sps_read: sps:0x%x profile:%d/%d poc:%d ref:%d %xx%d crop:%d-%d-%d-%dn",
- sps->i_id,
- sps->i_profile_idc, sps->i_level_idc,
- sps->i_poc_type,
- sps->i_num_ref_frames,
- sps->i_mb_width, sps->i_mb_height,
- sps->crop.i_left, sps->crop.i_right,
- sps->crop.i_top, sps->crop.i_bottom );
- return id;
- error:
- /* invalidate this sps */
- sps->i_id = -1;
- return -1;
- }
- /* return -1 if invalid, else the id */
- int x264_pps_read( bs_t *s, x264_pps_t pps_array[256] )
- {
- x264_pps_t *pps;
- int id;
- int i;
- id = bs_read_ue( s );
- if( bs_eof( s ) || id >= 256 )
- {
- fprintf( stderr, "id invalidn" );
- return -1;
- }
- pps = &pps_array[id];
- pps->i_id = id;
- pps->i_sps_id = bs_read_ue( s );
- if( pps->i_sps_id >= 32 )
- {
- goto error;
- }
- pps->b_cabac = bs_read( s, 1 );
- pps->b_pic_order = bs_read( s, 1 );
- pps->i_num_slice_groups = bs_read_ue( s ) + 1;
- if( pps->i_num_slice_groups > 1 )
- {
- fprintf( stderr, "FMO unsupportedn " );
- pps->i_slice_group_map_type =bs_read_ue( s );
- if( pps->i_slice_group_map_type == 0 )
- {
- for( i = 0; i < pps->i_num_slice_groups; i++ )
- {
- pps->i_run_length[i] = bs_read_ue( s );
- }
- }
- else if( pps->i_slice_group_map_type == 2 )
- {
- for( i = 0; i < pps->i_num_slice_groups; i++ )
- {
- pps->i_top_left[i] = bs_read_ue( s );
- pps->i_bottom_right[i] = bs_read_ue( s );
- }
- }
- else if( pps->i_slice_group_map_type == 3 ||
- pps->i_slice_group_map_type == 4 ||
- pps->i_slice_group_map_type == 5 )
- {
- pps->b_slice_group_change_direction = bs_read( s, 1 );
- pps->i_slice_group_change_rate = bs_read_ue( s ) + 1;
- }
- else if( pps->i_slice_group_map_type == 6 )
- {
- pps->i_pic_size_in_map_units = bs_read_ue( s ) + 1;
- for( i = 0; i < pps->i_pic_size_in_map_units; i++ )
- {
- /* FIXME */
- /* pps->i_slice_group_id = bs_read( s, ceil( log2( pps->i_pic_size_in_map_units +1 ) ) ); */
- }
- }
- }
- pps->i_num_ref_idx_l0_active = bs_read_ue( s ) + 1;
- pps->i_num_ref_idx_l1_active = bs_read_ue( s ) + 1;
- pps->b_weighted_pred = bs_read( s, 1 );
- pps->b_weighted_bipred = bs_read( s, 2 );
- pps->i_pic_init_qp = bs_read_se( s ) + 26;
- pps->i_pic_init_qs = bs_read_se( s ) + 26;
- pps->i_chroma_qp_index_offset = bs_read_se( s );
- pps->b_deblocking_filter_control = bs_read( s, 1 );
- pps->b_constrained_intra_pred = bs_read( s, 1 );
- pps->b_redundant_pic_cnt = bs_read( s, 1 );
- if( bs_eof( s ) )
- {
- /* no rbsp trailing */
- fprintf( stderr, "incomplete PPSn" );
- goto error;
- }
- fprintf( stderr, "x264_sps_read: pps:0x%x sps:0x%x %s slice_groups=%d ref0:%d ref1:%d QP:%d QS:%d QC=%d DFC:%d CIP:%d RPC:%dn",
- pps->i_id, pps->i_sps_id,
- pps->b_cabac ? "CABAC" : "CAVLC",
- pps->i_num_slice_groups,
- pps->i_num_ref_idx_l0_active,
- pps->i_num_ref_idx_l1_active,
- pps->i_pic_init_qp, pps->i_pic_init_qs, pps->i_chroma_qp_index_offset,
- pps->b_deblocking_filter_control,
- pps->b_constrained_intra_pred,
- pps->b_redundant_pic_cnt );
- return id;
- error:
- pps->i_id = -1;
- return -1;
- }