/***************************************************************************** * set: h264 encoder (SPS and SPS init and write) ***************************************************************************** * Copyright (C) 2003 Laurent Aimar * $Id: set.c,v 1.3 2004/03/28 09:21:44 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 "../x264.h"#include "../core/bs.h"#include "../core/set.h"void x264_sps_init( x264_sps_t *sps, int i_id, x264_param_t *param ){    sps->i_id               = i_id;    sps->i_profile_idc      = PROFILE_EXTENTED;    sps->i_level_idc        = 21;               /* FIXME ? */    sps->b_constraint_set0  = 0;    sps->b_constraint_set1  = 0;    sps->b_constraint_set2  = 0;    sps->i_log2_max_frame_num = 8;    sps->i_poc_type = 0;    if( sps->i_poc_type == 0 )    {        sps->i_log2_max_poc_lsb = 8;    }    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->i_num_ref_frames = param->i_frame_reference + 1; /* +1 for 2 ref in B */    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 = 1;    sps->b_mb_adaptive_frame_field = 0;    sps->b_direct8x8_inference = 0;    if( sps->b_frame_mbs_only == 0 )    {        sps->b_direct8x8_inference = 1;    }    if( param->i_width % 16 != 0 || param->i_height % 16 != 0 )    {        sps->b_crop = 1;        sps->crop.i_left    = 0;        sps->crop.i_right   = ( 16 - param->i_width % 16)/2;        sps->crop.i_top     = 0;        sps->crop.i_bottom  = ( 16 - param->i_height % 16)/2;    }    else    {        sps->b_crop = 0;        sps->crop.i_left    = 0;        sps->crop.i_right   = 0;        sps->crop.i_top     = 0;        sps->crop.i_bottom  = 0;    }    if( param->vui.i_sar_width > 0 && param->vui.i_sar_height > 0 )    {        int w = param->vui.i_sar_width;        int h = param->vui.i_sar_height;        int a = w, b = h;        while( b != 0 )        {            int t = a;            a = b;            b = t % b;        }        w /= a;        h /= a;        while( w > 65535 || h > 65535 )        {            w /= 2;            h /= 2;        }        if( w == 0 || h == 0 )        {            fprintf( stderr, "x264: cannot create valid sample aspect ratio\n" );            sps->b_vui = 0;        }        else if( w == h )        {            fprintf( stderr, "x264: no need for a SAR\n" );            sps->b_vui = 0;        }        else        {            fprintf( stderr, "x264: using SAR=%d/%d\n", w, h );            sps->b_vui = 1;            sps->vui.i_sar_width = w;            sps->vui.i_sar_height= h;        }    }    else    {        sps->b_vui = 0;    }}void x264_sps_write( bs_t *s, x264_sps_t *sps ){    bs_write( s, 8, sps->i_profile_idc );    bs_write( s, 1, sps->b_constraint_set0 );    bs_write( s, 1, sps->b_constraint_set1 );    bs_write( s, 1, sps->b_constraint_set2 );    bs_write( s, 5, 0 );    /* reserved */    bs_write( s, 8, sps->i_level_idc );    bs_write_ue( s, sps->i_id );    bs_write_ue( s, sps->i_log2_max_frame_num - 4 );    bs_write_ue( s, sps->i_poc_type );    if( sps->i_poc_type == 0 )    {        bs_write_ue( s, sps->i_log2_max_poc_lsb - 4 );    }    else if( sps->i_poc_type == 1 )    {        int i;        bs_write( s, 1, sps->b_delta_pic_order_always_zero );        bs_write_se( s, sps->i_offset_for_non_ref_pic );        bs_write_se( s, sps->i_offset_for_top_to_bottom_field );        bs_write_ue( s, sps->i_num_ref_frames_in_poc_cycle );        for( i = 0; i < sps->i_num_ref_frames_in_poc_cycle; i++ )        {            bs_write_se( s, sps->i_offset_for_ref_frame[i] );        }    }    bs_write_ue( s, sps->i_num_ref_frames );    bs_write( s, 1, sps->b_gaps_in_frame_num_value_allowed );    bs_write_ue( s, sps->i_mb_width - 1 );    bs_write_ue( s, sps->i_mb_height - 1);    bs_write( s, 1, sps->b_frame_mbs_only );    if( !sps->b_frame_mbs_only )    {        bs_write( s, 1, sps->b_mb_adaptive_frame_field );    }    bs_write( s, 1, sps->b_direct8x8_inference );    bs_write( s, 1, sps->b_crop );    if( sps->b_crop )    {        bs_write_ue( s, sps->crop.i_left );        bs_write_ue( s, sps->crop.i_right );        bs_write_ue( s, sps->crop.i_top );        bs_write_ue( s, sps->crop.i_bottom );    }    bs_write( s, 1, sps->b_vui );    if( sps->b_vui )    {        int i;        static const struct { int w, h; int sar; } sar[] =        {            { 1,   1, 1 }, { 12, 11, 2 }, { 10, 11, 3 }, { 16, 11, 4 },            { 40, 33, 5 }, { 24, 11, 6 }, { 20, 11, 7 }, { 32, 11, 8 },            { 80, 33, 9 }, { 18, 11, 10}, { 15, 11, 11}, { 64, 33, 12},            { 160,99, 13}, { 0, 0, -1 }        };        bs_write1( s, 1 );      /* aspect_ratio_info_present_flag */        for( i = 0; sar[i].sar != -1; i++ )        {            if( sar[i].w == sps->vui.i_sar_width && sar[i].h == sps->vui.i_sar_height )                break;        }        if( sar[i].sar != -1 )        {            bs_write( s, 8, sar[i].sar );        }        else        {            bs_write( s, 8, 255);   /* aspect_ration_idc (extented) */            bs_write( s, 16, sps->vui.i_sar_width );            bs_write( s, 16, sps->vui.i_sar_height );        }        bs_write1( s, 0 );      /* overscan_info_present_flag */        bs_write1( s, 0 );      /* video_signal_type_present_flag */#if 0        bs_write( s, 3, 5 );    /* unspecified video format */        bs_write1( s, 1 );      /* video full range flag */        bs_write1( s, 0 );      /* colour description present flag */#endif        bs_write1( s, 0 );      /* chroma_loc_info_present_flag */        bs_write1( s, 0 );      /* timing_info_present_flag */        bs_write1( s, 0 );      /* nal_hrd_parameters_present_flag */        bs_write1( s, 0 );      /* vcl_hrd_parameters_present_flag */        bs_write1( s, 0 );      /* pic_struct_present_flag */        bs_write1( s, 0 );      /* bitstream_restriction_flag */    }    bs_rbsp_trailing( s );}void x264_pps_init( x264_pps_t *pps, int i_id, x264_param_t *param, x264_sps_t *sps ){    pps->i_id = i_id;    pps->i_sps_id = sps->i_id;    pps->b_cabac = param->b_cabac;    pps->b_pic_order = 0;    pps->i_num_slice_groups = 1;    if( pps->i_num_slice_groups > 1 )    {        int i;        pps->i_slice_group_map_type = 0;        if( pps->i_slice_group_map_type == 0 )        {            for( i = 0; i < pps->i_num_slice_groups; i++ )            {                pps->i_run_length[i] = 1;            }        }        else if( pps->i_slice_group_map_type == 2 )        {            for( i = 0; i < pps->i_num_slice_groups; i++ )            {                pps->i_top_left[i] = 0;                pps->i_bottom_right[i] = 0;            }        }        else if( pps->i_slice_group_map_type >= 3 &&                 pps->i_slice_group_map_type <= 5 )        {            pps->b_slice_group_change_direction = 0;            pps->i_slice_group_change_rate = 0;        }        else if( pps->i_slice_group_map_type == 6 )        {            pps->i_pic_size_in_map_units = 1;            for( i = 0; i < pps->i_pic_size_in_map_units; i++ )            {                pps->i_slice_group_id[i] = 0;            }        }    }    pps->i_num_ref_idx_l0_active = 1;    pps->i_num_ref_idx_l1_active = 1;    pps->b_weighted_pred = 0;    pps->b_weighted_bipred = 0;    pps->i_pic_init_qp = 26;    pps->i_pic_init_qs = 26;    pps->i_chroma_qp_index_offset = 0;#if 0    if( !param->b_deblocking_filter )    {        pps->b_deblocking_filter_control = 1;    }    else    {        pps->b_deblocking_filter_control = 1;    }#endif    pps->b_deblocking_filter_control = 1;    pps->b_constrained_intra_pred = 0;    pps->b_redundant_pic_cnt = 0;}void x264_pps_write( bs_t *s, x264_pps_t *pps ){    bs_write_ue( s, pps->i_id );    bs_write_ue( s, pps->i_sps_id );    bs_write( s, 1, pps->b_cabac );    bs_write( s, 1, pps->b_pic_order );    bs_write_ue( s, pps->i_num_slice_groups - 1 );    if( pps->i_num_slice_groups > 1 )    {        int i;        bs_write_ue( s, pps->i_slice_group_map_type );        if( pps->i_slice_group_map_type == 0 )        {            for( i = 0; i < pps->i_num_slice_groups; i++ )            {                bs_write_ue( s, pps->i_run_length[i] - 1 );            }        }        else if( pps->i_slice_group_map_type == 2 )        {            for( i = 0; i < pps->i_num_slice_groups; i++ )            {                bs_write_ue( s, pps->i_top_left[i] );                bs_write_ue( s, pps->i_bottom_right[i] );            }        }        else if( pps->i_slice_group_map_type >= 3 &&                 pps->i_slice_group_map_type <= 5 )        {            bs_write( s, 1, pps->b_slice_group_change_direction );            bs_write_ue( s, pps->b_slice_group_change_direction - 1 );        }        else if( pps->i_slice_group_map_type == 6 )        {            bs_write_ue( s, pps->i_pic_size_in_map_units - 1 );            for( i = 0; i < pps->i_pic_size_in_map_units; i++ )            {                /* FIXME */                /* bs_write( s, ceil( log2( pps->i_pic_size_in_map_units +1 ) ),                 *              pps->i_slice_group_id[i] );                 */            }        }    }    bs_write_ue( s, pps->i_num_ref_idx_l0_active - 1 );    bs_write_ue( s, pps->i_num_ref_idx_l1_active - 1 );    bs_write( s, 1, pps->b_weighted_pred );    bs_write( s, 2, pps->b_weighted_bipred );    bs_write_se( s, pps->i_pic_init_qp - 26 );    bs_write_se( s, pps->i_pic_init_qs - 26 );    bs_write_se( s, pps->i_chroma_qp_index_offset );    bs_write( s, 1, pps->b_deblocking_filter_control );    bs_write( s, 1, pps->b_constrained_intra_pred );    bs_write( s, 1, pps->b_redundant_pic_cnt );    bs_rbsp_trailing( s );}