mirror of
https://github.com/cemu-project/Cemu.git
synced 2024-12-27 18:21:52 +01:00
249 lines
12 KiB
C
249 lines
12 KiB
C
/******************************************************************************
|
|
*
|
|
* 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 Name : ih264d_vui.c */
|
|
/* */
|
|
/* Description : This file contains routines to parse VUI NAL's */
|
|
/* */
|
|
/* List of Functions : <List the functions defined in this file> */
|
|
/* */
|
|
/* Issues / Problems : None */
|
|
/* */
|
|
/* Revision History : */
|
|
/* */
|
|
/* DD MM YYYY Author(s) Changes (Describe the changes made) */
|
|
/* 25 05 2005 NS Draft */
|
|
/* */
|
|
/*****************************************************************************/
|
|
|
|
#include "ih264_typedefs.h"
|
|
#include "ih264_macros.h"
|
|
#include "ih264_platform_macros.h"
|
|
#include "ih264d_vui.h"
|
|
#include "ih264d_bitstrm.h"
|
|
#include "ih264d_parse_cavlc.h"
|
|
#include "ih264d_structs.h"
|
|
#include "ih264d_error_handler.h"
|
|
|
|
/*****************************************************************************/
|
|
/* */
|
|
/* Function Name : ih264d_parse_hrd_parametres */
|
|
/* */
|
|
/* Description : This function parses hrd_t parametres */
|
|
/* Inputs : ps_hrd pointer to HRD params */
|
|
/* ps_bitstrm Bitstream */
|
|
/* Globals : None */
|
|
/* Processing : Parses HRD params */
|
|
/* Outputs : None */
|
|
/* Returns : None */
|
|
/* */
|
|
/* Issues : None */
|
|
/* */
|
|
/* Revision History: */
|
|
/* */
|
|
/* DD MM YYYY Author(s) Changes (Describe the changes made) */
|
|
/* 06 05 2002 NS Draft */
|
|
/* */
|
|
/*****************************************************************************/
|
|
|
|
WORD32 ih264d_parse_hrd_parametres(hrd_t *ps_hrd,
|
|
dec_bit_stream_t *ps_bitstrm)
|
|
{
|
|
UWORD8 u1_index;
|
|
UWORD32 *pu4_bitstrm_ofst = &ps_bitstrm->u4_ofst;
|
|
UWORD32 *pu4_bitstrm_buf = ps_bitstrm->pu4_buffer;
|
|
|
|
ps_hrd->u4_cpb_cnt = 1
|
|
+ ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
|
|
if(ps_hrd->u4_cpb_cnt > 31)
|
|
return ERROR_INV_SPS_PPS_T;
|
|
ps_hrd->u1_bit_rate_scale = ih264d_get_bits_h264(ps_bitstrm, 4);
|
|
ps_hrd->u1_cpb_size_scale = ih264d_get_bits_h264(ps_bitstrm, 4);
|
|
|
|
for(u1_index = 0; u1_index < (UWORD8)ps_hrd->u4_cpb_cnt; u1_index++)
|
|
{
|
|
ps_hrd->u4_bit_rate[u1_index] = 1
|
|
+ ih264d_uev(pu4_bitstrm_ofst,
|
|
pu4_bitstrm_buf);
|
|
ps_hrd->u4_cpb_size[u1_index] = 1
|
|
+ ih264d_uev(pu4_bitstrm_ofst,
|
|
pu4_bitstrm_buf);
|
|
ps_hrd->u1_cbr_flag[u1_index] = ih264d_get_bits_h264(ps_bitstrm, 1);
|
|
}
|
|
|
|
ps_hrd->u1_initial_cpb_removal_delay = 1
|
|
+ ih264d_get_bits_h264(ps_bitstrm, 5);
|
|
ps_hrd->u1_cpb_removal_delay_length = 1
|
|
+ ih264d_get_bits_h264(ps_bitstrm, 5);
|
|
ps_hrd->u1_dpb_output_delay_length = 1
|
|
+ ih264d_get_bits_h264(ps_bitstrm, 5);
|
|
ps_hrd->u1_time_offset_length = ih264d_get_bits_h264(ps_bitstrm, 5);
|
|
|
|
return OK;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
/* */
|
|
/* Function Name : ih264d_parse_vui_parametres */
|
|
/* */
|
|
/* Description : This function parses VUI NALs. */
|
|
/* Inputs : ps_vu4 pointer to VUI params */
|
|
/* ps_bitstrm Bitstream */
|
|
/* Globals : None */
|
|
/* Processing : Parses VUI NAL's units and stores the info */
|
|
/* Outputs : None */
|
|
/* Returns : None */
|
|
/* */
|
|
/* Issues : None */
|
|
/* */
|
|
/* Revision History: */
|
|
/* */
|
|
/* DD MM YYYY Author(s) Changes (Describe the changes made) */
|
|
/* 06 05 2002 NS Draft */
|
|
/* */
|
|
/*****************************************************************************/
|
|
|
|
WORD32 ih264d_parse_vui_parametres(vui_t *ps_vu4,
|
|
dec_bit_stream_t *ps_bitstrm)
|
|
{
|
|
UWORD8 u4_bits;
|
|
UWORD32 *pu4_bitstrm_ofst = &ps_bitstrm->u4_ofst;
|
|
UWORD32 *pu4_bitstrm_buf = ps_bitstrm->pu4_buffer;
|
|
WORD32 ret;
|
|
|
|
u4_bits = ih264d_get_bits_h264(ps_bitstrm, 1);
|
|
if(u4_bits)
|
|
{
|
|
u4_bits = ih264d_get_bits_h264(ps_bitstrm, 8);
|
|
ps_vu4->u1_aspect_ratio_idc = (UWORD8)u4_bits;
|
|
if(VUI_EXTENDED_SAR == u4_bits)
|
|
{
|
|
ps_vu4->u2_sar_width = ih264d_get_bits_h264(ps_bitstrm, 16);
|
|
ps_vu4->u2_sar_height = ih264d_get_bits_h264(ps_bitstrm, 16);
|
|
}
|
|
}
|
|
|
|
u4_bits = ih264d_get_bits_h264(ps_bitstrm, 1);
|
|
if(u4_bits)
|
|
{
|
|
ps_vu4->u1_overscan_appropriate_flag = ih264d_get_bits_h264(
|
|
ps_bitstrm, 1);
|
|
}
|
|
u4_bits = ih264d_get_bits_h264(ps_bitstrm, 1);
|
|
/* Initialize to unspecified (5 for video_format and
|
|
2 for colour_primaries, tfr_chars, matrix_coeffs */
|
|
ps_vu4->u1_video_format = 5;
|
|
ps_vu4->u1_video_full_range_flag = 0;
|
|
ps_vu4->u1_colour_primaries = 2;
|
|
ps_vu4->u1_tfr_chars = 2;
|
|
ps_vu4->u1_matrix_coeffs = 2;
|
|
|
|
if(u4_bits)
|
|
{
|
|
ps_vu4->u1_video_format = ih264d_get_bits_h264(ps_bitstrm, 3);
|
|
ps_vu4->u1_video_full_range_flag = ih264d_get_bits_h264(ps_bitstrm,
|
|
1);
|
|
u4_bits = ih264d_get_bits_h264(ps_bitstrm, 1);
|
|
if(u4_bits)
|
|
{
|
|
ps_vu4->u1_colour_primaries = ih264d_get_bits_h264(ps_bitstrm,
|
|
8);
|
|
ps_vu4->u1_tfr_chars = ih264d_get_bits_h264(ps_bitstrm, 8);
|
|
ps_vu4->u1_matrix_coeffs = ih264d_get_bits_h264(ps_bitstrm, 8);
|
|
}
|
|
}
|
|
|
|
u4_bits = ih264d_get_bits_h264(ps_bitstrm, 1);
|
|
if(u4_bits)
|
|
{
|
|
ps_vu4->u1_cr_top_field = ih264d_uev(pu4_bitstrm_ofst,
|
|
pu4_bitstrm_buf);
|
|
ps_vu4->u1_cr_bottom_field = ih264d_uev(pu4_bitstrm_ofst,
|
|
pu4_bitstrm_buf);
|
|
}
|
|
|
|
u4_bits = ih264d_get_bits_h264(ps_bitstrm, 1);
|
|
if(u4_bits)
|
|
{
|
|
ps_vu4->u4_num_units_in_tick = ih264d_get_bits_h264(ps_bitstrm, 32);
|
|
ps_vu4->u4_time_scale = ih264d_get_bits_h264(ps_bitstrm, 32);
|
|
ps_vu4->u1_fixed_frame_rate_flag = ih264d_get_bits_h264(ps_bitstrm,
|
|
1);
|
|
}
|
|
|
|
u4_bits = ih264d_get_bits_h264(ps_bitstrm, 1);
|
|
ps_vu4->u1_nal_hrd_params_present = u4_bits;
|
|
if(u4_bits)
|
|
{
|
|
ret = ih264d_parse_hrd_parametres(&ps_vu4->s_nal_hrd, ps_bitstrm);
|
|
if(ret != OK)
|
|
return ret;
|
|
}
|
|
u4_bits = ih264d_get_bits_h264(ps_bitstrm, 1);
|
|
ps_vu4->u1_vcl_hrd_params_present = u4_bits;
|
|
if(u4_bits)
|
|
{
|
|
ret = ih264d_parse_hrd_parametres(&ps_vu4->s_vcl_hrd, ps_bitstrm);
|
|
if(ret != OK)
|
|
return ret;
|
|
}
|
|
|
|
if(ps_vu4->u1_nal_hrd_params_present || u4_bits)
|
|
{
|
|
ps_vu4->u1_low_delay_hrd_flag = ih264d_get_bits_h264(ps_bitstrm, 1);
|
|
}
|
|
ps_vu4->u1_pic_struct_present_flag = ih264d_get_bits_h264(ps_bitstrm, 1);
|
|
|
|
ps_vu4->u1_bitstream_restriction_flag = ih264d_get_bits_h264(ps_bitstrm, 1);
|
|
|
|
if(ps_vu4->u1_bitstream_restriction_flag)
|
|
{
|
|
ps_vu4->u1_mv_over_pic_boundaries_flag = ih264d_get_bits_h264(
|
|
ps_bitstrm, 1);
|
|
ps_vu4->u4_max_bytes_per_pic_denom = ih264d_uev(pu4_bitstrm_ofst,
|
|
pu4_bitstrm_buf);
|
|
ps_vu4->u4_max_bits_per_mb_denom = ih264d_uev(pu4_bitstrm_ofst,
|
|
pu4_bitstrm_buf);
|
|
ps_vu4->u4_log2_max_mv_length_horz = ih264d_uev(pu4_bitstrm_ofst,
|
|
pu4_bitstrm_buf);
|
|
ps_vu4->u4_log2_max_mv_length_vert = ih264d_uev(pu4_bitstrm_ofst,
|
|
pu4_bitstrm_buf);
|
|
ps_vu4->u4_num_reorder_frames = ih264d_uev(pu4_bitstrm_ofst,
|
|
pu4_bitstrm_buf);
|
|
ps_vu4->u4_max_dec_frame_buffering = ih264d_uev(pu4_bitstrm_ofst,
|
|
pu4_bitstrm_buf);
|
|
if((ps_vu4->u4_max_dec_frame_buffering > (H264_MAX_REF_PICS * 2)) ||
|
|
(ps_vu4->u4_num_reorder_frames > ps_vu4->u4_max_dec_frame_buffering))
|
|
{
|
|
return ERROR_INV_SPS_PPS_T;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Setting this to a large value if not present */
|
|
ps_vu4->u4_num_reorder_frames = 64;
|
|
ps_vu4->u4_max_dec_frame_buffering = 64;
|
|
}
|
|
|
|
return OK;
|
|
}
|