/******************************************************************************
*
* 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
*/
#include <string.h>
#include <cutils/log.h>
#include "iv_datatypedef.h"
#include "iv.h"
#include "ivd.h"
#include "impeg2_macros.h"
#include "impeg2_buf_mgr.h"
#include "impeg2_disp_mgr.h"
#include "impeg2_defs.h"
#include "impeg2_inter_pred.h"
#include "impeg2_idct.h"
#include "impeg2_format_conv.h"
#include "impeg2_mem_func.h"
#include "impeg2_platform_macros.h"
#include "ithread.h"
#include "impeg2_job_queue.h"
#include "impeg2d.h"
#include "impeg2d_bitstream.h"
#include "impeg2d_api.h"
#include "impeg2d_structs.h"
#include "impeg2_globals.h"
#include "impeg2d_pic_proc.h"
#include "impeg2d_deinterlace.h"
/******************************************************************************
* Function Name : impeg2d_next_start_code
*
* Description : Peek for next_start_code from the stream_t.
*
* Arguments :
* dec : Decoder Context
*
* Values Returned : None
******************************************************************************/
void impeg2d_next_start_code(dec_state_t *ps_dec)
{
stream_t *ps_stream;
ps_stream = &ps_dec->s_bit_stream;
impeg2d_bit_stream_flush_to_byte_boundary(ps_stream);
while ((impeg2d_bit_stream_nxt(ps_stream,START_CODE_PREFIX_LEN) != START_CODE_PREFIX)
&& (ps_dec->s_bit_stream.u4_offset < ps_dec->s_bit_stream.u4_max_offset))
{
impeg2d_bit_stream_get(ps_stream,8);
}
return;
}
/******************************************************************************
* Function Name : impeg2d_next_code
*
* Description : Peek for next_start_code from the stream_t.
*
* Arguments :
* dec : Decoder Context
*
* Values Returned : None
******************************************************************************/
void impeg2d_next_code(dec_state_t *ps_dec, UWORD32 u4_start_code_val)
{
stream_t *ps_stream;
ps_stream = &ps_dec->s_bit_stream;
impeg2d_bit_stream_flush_to_byte_boundary(ps_stream);
while ((impeg2d_bit_stream_nxt(ps_stream,START_CODE_LEN) != u4_start_code_val) &&
(ps_dec->s_bit_stream.u4_offset < ps_dec->s_bit_stream.u4_max_offset))
{
if (impeg2d_bit_stream_get(ps_stream,8) != 0)
{
/* Ignore stuffing bit errors. */
}
}
return;
}
/******************************************************************************
* Function Name : impeg2d_peek_next_start_code
*
* Description : Peek for next_start_code from the stream_t.
*
* Arguments :
* dec : Decoder Context
*
* Values Returned : None
******************************************************************************/
void impeg2d_peek_next_start_code(dec_state_t *ps_dec)
{
stream_t *ps_stream;
ps_stream = &ps_dec->s_bit_stream;
impeg2d_bit_stream_flush_to_byte_boundary(ps_stream);
while ((impeg2d_bit_stream_nxt(ps_stream,START_CODE_PREFIX_LEN) != START_CODE_PREFIX)
&& (ps_dec->s_bit_stream.u4_offset < ps_dec->s_bit_stream.u4_max_offset))
{
impeg2d_bit_stream_get(ps_stream,8);
}
return;
}
/******************************************************************************
*
* Function Name : impeg2d_dec_seq_hdr
*
* Description : Decodes Sequence header information
*
* Arguments :
* dec : Decoder Context
*
* Values Returned : None
******************************************************************************/
IMPEG2D_ERROR_CODES_T impeg2d_dec_seq_hdr(dec_state_t *ps_dec)
{
stream_t *ps_stream;
ps_stream = &ps_dec->s_bit_stream;
UWORD16 u2_height;
UWORD16 u2_width;
if (impeg2d_bit_stream_nxt(ps_stream,START_CODE_LEN) != SEQUENCE_HEADER_CODE)
{
impeg2d_bit_stream_flush(ps_stream,START_CODE_LEN);
return IMPEG2D_FRM_HDR_START_CODE_NOT_FOUND;
}
impeg2d_bit_stream_flush(ps_stream,START_CODE_LEN);
u2_width = impeg2d_bit_stream_get(ps_stream,12);
u2_height = impeg2d_bit_stream_get(ps_stream,12);
if ((u2_width != ps_dec->u2_horizontal_size)
|| (u2_height != ps_dec->u2_vertical_size))
{
if (0 == ps_dec->u2_header_done)
{
/* This is the first time we are reading the resolution */
ps_dec->u2_horizontal_size = u2_width;
ps_dec->u2_vertical_size = u2_height;
if (0 == ps_dec->u4_frm_buf_stride)
{
ps_dec->u4_frm_buf_stride = (UWORD32) (u2_width);
}
}
else
{
if((u2_width > ps_dec->u2_create_max_width)
|| (u2_height > ps_dec->u2_create_max_height))
{
IMPEG2D_ERROR_CODES_T e_error = IMPEG2D_UNSUPPORTED_DIMENSIONS;
ps_dec->u2_reinit_max_height = u2_height;
ps_dec->u2_reinit_max_width = u2_width;
return e_error;
}
else
{
/* The resolution has changed */
return (IMPEG2D_ERROR_CODES_T)IVD_RES_CHANGED;
}
}
}
if((ps_dec->u2_horizontal_size > ps_dec->u2_create_max_width)
|| (ps_dec->u2_vertical_size > ps_dec->u2_create_max_height))
{
IMPEG2D_ERROR_CODES_T e_error = IMPEG2D_UNSUPPORTED_DIMENSIONS;
return SET_IVD_FATAL_ERROR(e_error);
}
/*------------------------------------------------------------------------*/
/* Flush the following as they are not being used */
/* aspect_ratio_info (4 bits) */
/*------------------------------------------------------------------------*/
ps_dec->u2_aspect_ratio_info = impeg2d_bit_stream_get(ps_stream,4);
/*------------------------------------------------------------------------*/
/* Frame rate code(4 bits) */
/*------------------------------------------------------------------------*/
ps_dec->u2_frame_rate_code = impeg2d_bit_stream_get(ps_stream,4);
/*------------------------------------------------------------------------*/
/* Flush the following as they are not being used */
/* bit_rate_value (18 bits) */
/*------------------------------------------------------------------------*/
impeg2d_bit_stream_flush(ps_stream,18);
GET_MARKER_BIT(ps_dec,ps_stream);
/*------------------------------------------------------------------------*/
/* Flush the following as they are not being used */
/* vbv_buffer_size_value(10 bits), constrained_parameter_flag (1 bit) */
/*------------------------------------------------------------------------*/
impeg2d_bit_stream_flush(ps_stream,11);
/*------------------------------------------------------------------------*/
/* Quantization matrix for the intra blocks */
/*------------------------------------------------------------------------*/
if(impeg2d_bit_stream_get_bit(ps_stream) == 1)
{
UWORD16 i;
for(i = 0; i < NUM_PELS_IN_BLOCK; i++)
{
ps_dec->au1_intra_quant_matrix[gau1_impeg2_inv_scan_zig_zag[i]] = (UWORD8)impeg2d_bit_stream_get(ps_stream,8);
}
}
else
{
memcpy(ps_dec->au1_intra_quant_matrix,gau1_impeg2_intra_quant_matrix_default,
NUM_PELS_IN_BLOCK);
}
/*------------------------------------------------------------------------*/
/* Quantization matrix for the inter blocks */
/*------------------------------------------------------------------------*/
if(impeg2d_bit_stream_get_bit(ps_stream) == 1)
{
UWORD16 i;
for(i = 0; i < NUM_PELS_IN_BLOCK; i++)
{
ps_dec->au1_inter_quant_matrix[gau1_impeg2_inv_scan_zig_zag[i]] = (UWORD8)impeg2d_bit_stream_get(ps_stream,8);
}
}
else
{
memcpy(ps_dec->au1_inter_quant_matrix,gau1_impeg2_inter_quant_matrix_default,
NUM_PELS_IN_BLOCK);
}
impeg2d_next_start_code(ps_dec);
return (IMPEG2D_ERROR_CODES_T)IVD_ERROR_NONE;
}
/******************************************************************************
*
* Function Name : impeg2d_dec_seq_ext
*
* Description : Gets additional sequence data.
*
* Arguments :
* dec : Decoder Context
*
* Values Returned : None
******************************************************************************/
IMPEG2D_ERROR_CODES_T impeg2d_dec_seq_ext(dec_state_t *ps_dec)
{
stream_t *ps_stream;
ps_stream = &ps_dec->s_bit_stream;
if (impeg2d_bit_stream_nxt(ps_stream,START_CODE_LEN) != EXTENSION_START_CODE)
{
impeg2d_bit_stream_flush(ps_stream,START_CODE_LEN);
return IMPEG2D_FRM_HDR_START_CODE_NOT_FOUND;
}
/* Flush the extension start code */
impeg2d_bit_stream_flush(ps_stream,START_CODE_LEN);
/* Flush extension start code identifier */
impeg2d_bit_stream_flush(ps_stream,4);
/*----------------------------------------------------------------------*/
/* Profile and Level information */
/*----------------------------------------------------------------------*/
{
UWORD32 u4_esc_bit, u4_profile, u4_level;
/* Read the profile and level information */
/* check_profile_and_level: Table 8-1 */
/* [7:7] 1 Escape bit */
/* [6:4] 3 Profile identification */
/* [3:0] 4 Level identification */
u4_esc_bit = impeg2d_bit_stream_get_bit(ps_stream);
u4_profile = impeg2d_bit_stream_get(ps_stream,3);
u4_level = impeg2d_bit_stream_get(ps_stream,4);
UNUSED(u4_profile);
UNUSED(u4_level);
/*
if( escBit == 1 ||
profile < MPEG2_MAIN_PROFILE ||
level < MPEG2_MAIN_LEVEL)
*/
if (1 == u4_esc_bit)
{
return IMPEG2D_PROF_LEVEL_NOT_SUPPORTED;
}
}
ps_dec->u2_progressive_sequence = impeg2d_bit_stream_get_bit(ps_stream);
/* Read the chrominance format */
if(impeg2d_bit_stream_get(ps_stream,2) != 0x1)
return IMPEG2D_CHROMA_FMT_NOT_SUP;
/* Read the 2 most significant bits from horizontal_size */
ps_dec->u2_horizontal_size += (impeg2d_bit_stream_get(ps_stream,2) << 12);
/* Read the 2 most significant bits from vertical_size */
ps_dec->u2_vertical_size += (impeg2d_bit_stream_get(ps_stream,2) << 12);
/*-----------------------------------------------------------------------*/
/* Flush the following as they are not used now */
/* bit_rate_extension 12 */
/* marker_bit 1 */
/* vbv_buffer_size_extension 8 */
/* low_delay 1 */
/*-----------------------------------------------------------------------*/
impeg2d_bit_stream_flush(ps_stream,12);
GET_MARKER_BIT(ps_dec,ps_stream);
impeg2d_bit_stream_flush(ps_stream,9);
/*-----------------------------------------------------------------------*/
/* frame_rate_extension_n 2 */
/* frame_rate_extension_d 5 */
/*-----------------------------------------------------------------------*/
ps_dec->u2_frame_rate_extension_n = impeg2d_bit_stream_get(ps_stream,2);
ps_dec->u2_frame_rate_extension_d = impeg2d_bit_stream_get(ps_stream,5);
return (IMPEG2D_ERROR_CODES_T)IVD_ERROR_NONE;
}
/*******************************************************************************
*
* Function Name : impeg2d_dec_seq_disp_ext
*
* Description : This function is eqvt to sequence_display_extension() of
* standard. It flushes data present as it is not being used
*
* Arguments :
* dec : Decoder Context
*
* Values Returned : None
******************************************************************************/
void impeg2d_dec_seq_disp_ext(dec_state_t *ps_dec)
{
stream_t *ps_stream;
ps_stream = &ps_dec->s_bit_stream;
/*
sequence_display_extension()
{
extension_start_code_identifier 4
video_format 3
colour_description 1
if (colour_description)
{
colour_primaries 8
transfer_characteristics 8
matrix_coefficients 8
}
display_horizontal_size 14
marker_bit 1
display_vertical_size 14
next_start_code()
}
*/
impeg2d_bit_stream_get(ps_stream, 4);
ps_dec->u1_video_format = impeg2d_bit_stream_get(ps_stream, 3);
ps_dec->u1_colour_description = impeg2d_bit_stream_get(ps_stream, 1);
ps_dec->u1_colour_primaries = 2;
ps_dec->u1_transfer_characteristics = 2;
ps_dec->u1_matrix_coefficients = 2;
if(ps_dec->u1_colour_description)
{
ps_dec->u1_colour_primaries = impeg2d_bit_stream_get(ps_stream, 8);
ps_dec->u1_transfer_characteristics = impeg2d_bit_stream_get(ps_stream, 8);
ps_dec->u1_matrix_coefficients = impeg2d_bit_stream_get(ps_stream, 8);
}
/* display_horizontal_size and display_vertical_size */
ps_dec->u2_display_horizontal_size = impeg2d_bit_stream_get(ps_stream,14);;
GET_MARKER_BIT(ps_dec,ps_stream);
ps_dec->u2_display_vertical_size = impeg2d_bit_stream_get(ps_stream,14);
ps_dec->u1_seq_disp_extn_present = 1;
impeg2d_next_start_code(ps_dec);
}
/*******************************************************************************
*
* Function Name : impeg2d_dec_seq_scale_ext
*
* Description : This function is eqvt to sequence_scalable_extension() of
* standard.
*
* Arguments : Decoder context
*
* Values Returned : None
*******************************************************************************/
IMPEG2D_ERROR_CODES_T impeg2d_dec_seq_scale_ext(dec_state_t *ps_dec)
{
UNUSED(ps_dec);
return IMPEG2D_SCALABILITIY_NOT_SUPPORTED;
}
/*******************************************************************************
*
* Function Name : impeg2d_dec_quant_matrix_ext
*
* Description : Gets Intra and NonIntra quantizer matrix from the stream.
*
* Arguments : Decoder context
*
* Values Returned : None
*******************************************************************************/
void impeg2d_dec_quant_matrix_ext(dec_state_t *ps_dec)
{
stream_t *ps_stream;
ps_stream = &ps_dec->s_bit_stream;
/* Flush extension_start_code_identifier */
impeg2d_bit_stream_flush(ps_stream,4);
/*------------------------------------------------------------------------*/
/* Quantization matrix for the intra blocks */
/*------------------------------------------------------------------------*/
if(impeg2d_bit_stream_get(ps_stream,1) == 1)
{
UWORD16 i;
for(i = 0; i < NUM_PELS_IN_BLOCK; i++)
{
ps_dec->au1_intra_quant_matrix[gau1_impeg2_inv_scan_zig_zag[i]] = (UWORD8)impeg2d_bit_stream_get(ps_stream,8);
}
}
/*------------------------------------------------------------------------*/
/* Quantization matrix for the inter blocks */
/*------------------------------------------------------------------------*/
if(impeg2d_bit_stream_get(ps_stream,1) == 1)
{
UWORD16 i;
for(i = 0; i < NUM_PELS_IN_BLOCK; i++)
{
ps_dec->au1_inter_quant_matrix[gau1_impeg2_inv_scan_zig_zag[i]] = (UWORD8)impeg2d_bit_stream_get(ps_stream,8);
}
}
/* Note : chroma intra quantizer matrix and chroma non
intra quantizer matrix are not needed for 4:2:0 format */
impeg2d_next_start_code(ps_dec);
}
/*******************************************************************************
*
* Function Name : impeg2d_dec_pic_disp_ext
*
* Description : This function is eqvt to picture_display_extension() of
* standard.The parameters are not used by decoder
*
* Arguments : Pointer to dec_state_t
*
* Values Returned : Decoder context
*
* Values Returned : None
*******************************************************************************/
void impeg2d_dec_pic_disp_ext(dec_state_t *ps_dec)
{
WORD16 i2_number_of_frame_centre_offsets ;
stream_t *ps_stream;
ps_stream = &ps_dec->s_bit_stream;
impeg2d_bit_stream_flush(ps_stream,4);
if (ps_dec->u2_progressive_sequence)
{
i2_number_of_frame_centre_offsets = (ps_dec->u2_repeat_first_field) ?
2 + ps_dec->u2_top_field_first : 1;
}
else
{
i2_number_of_frame_centre_offsets =
(ps_dec->u2_picture_structure != FRAME_PICTURE) ?
1 : 2 + ps_dec->u2_repeat_first_field;
}
while(i2_number_of_frame_centre_offsets--)
{
/* frame_centre_horizontal_offset */
impeg2d_bit_stream_get(ps_stream,16);
GET_MARKER_BIT(ps_dec,ps_stream);
/* frame_centre_vertical_offset */
impeg2d_bit_stream_get(ps_stream,16);
GET_MARKER_BIT(ps_dec,ps_stream);
}
impeg2d_next_start_code(ps_dec);
}
/*******************************************************************************
*
* Function Name : impeg2d_dec_itu_t_ext
*
* Description : This function is eqvt to ITU-T_extension() of
* standard.The parameters are not used by decoder
*
* Arguments : Decoder context
*
* Values Returned : None
*******************************************************************************/
void impeg2d_dec_itu_t_ext(dec_state_t *ps_dec)
{
impeg2d_bit_stream_flush(&ps_dec->s_bit_stream,EXT_ID_LEN);
impeg2d_next_start_code(ps_dec);
}
/*******************************************************************************
* Function Name : impeg2d_dec_copyright_ext
*
* Description : This function is eqvt to copyright_extension() of
* standard. The parameters are not used by decoder
*
* Arguments : Decoder context
*
* Values Returned : None
*******************************************************************************/
void impeg2d_dec_copyright_ext(dec_state_t *ps_dec)
{
UWORD32 u4_bits_to_flush;
u4_bits_to_flush = COPYRIGHT_EXTENSION_LEN;
while(u4_bits_to_flush >= 32 )
{
impeg2d_bit_stream_flush(&ps_dec->s_bit_stream,32);
u4_bits_to_flush = u4_bits_to_flush - 32;
}
if(u4_bits_to_flush > 0)
{
impeg2d_bit_stream_flush(&ps_dec->s_bit_stream,u4_bits_to_flush);
}
impeg2d_next_start_code(ps_dec);
}
/*******************************************************************************
* Function Name : impeg2d_dec_cam_param_ext
*
* Description : This function is eqvt to camera_parameters_extension() of
* standard. The parameters are not used by decoder
*
* Arguments : Decoder context
*
* Values Returned : None
*******************************************************************************/
void impeg2d_dec_cam_param_ext(dec_state_t *ps_dec)
{
UWORD32 u4_bits_to_flush;
u4_bits_to_flush = CAMERA_PARAMETER_EXTENSION_LEN;
while(u4_bits_to_flush >= 32 )
{
impeg2d_bit_stream_flush(&ps_dec->s_bit_stream,32);
u4_bits_to_flush = u4_bits_to_flush - 32;
}
if(u4_bits_to_flush > 0)
{
impeg2d_bit_stream_flush(&ps_dec->s_bit_stream,u4_bits_to_flush);
}
impeg2d_next_start_code(ps_dec);
}
/*******************************************************************************
*
* Function Name : impeg2d_dec_grp_of_pic_hdr
*
* Description : Gets information at the GOP level.
*
* Arguments : Decoder context
*
* Values Returned : None
*******************************************************************************/
void impeg2d_dec_grp_of_pic_hdr(dec_state_t *ps_dec)
{
UWORD32 u4_bits_to_flush;
u4_bits_to_flush = GROUP_OF_PICTURE_LEN;
while(u4_bits_to_flush >= 32 )
{
impeg2d_bit_stream_flush(&ps_dec->s_bit_stream,32);
u4_bits_to_flush = u4_bits_to_flush - 32;
}
if(u4_bits_to_flush > 0)
{
impeg2d_bit_stream_flush(&ps_dec->s_bit_stream,u4_bits_to_flush);
}
}
/*******************************************************************************
*
* Function Name : impeg2d_dec_pic_hdr
*
* Description : Gets the picture header information.
*
* Arguments : Decoder context
*
* Values Returned : None
*******************************************************************************/
IMPEG2D_ERROR_CODES_T impeg2d_dec_pic_hdr(dec_state_t *ps_dec)
{
stream_t *ps_stream;
ps_stream = &ps_dec->s_bit_stream;
impeg2d_bit_stream_flush(ps_stream,START_CODE_LEN);
/* Flush temporal reference */
impeg2d_bit_stream_get(ps_stream,10);
/* Picture type */
ps_dec->e_pic_type = (e_pic_type_t)impeg2d_bit_stream_get(ps_stream,3);
if((ps_dec->e_pic_type < I_PIC) || (ps_dec->e_pic_type > D_PIC))
{
impeg2d_next_code(ps_dec, PICTURE_START_CODE);
return IMPEG2D_INVALID_PIC_TYPE;
}
/* Flush vbv_delay */
impeg2d_bit_stream_get(ps_stream,16);
if(ps_dec->e_pic_type == P_PIC || ps_dec->e_pic_type == B_PIC)
{
ps_dec->u2_full_pel_forw_vector = impeg2d_bit_stream_get_bit(ps_stream);
ps_dec->u2_forw_f_code = impeg2d_bit_stream_get(ps_stream,3);
}
if(ps_dec->e_pic_type == B_PIC)
{
ps_dec->u2_full_pel_back_vector = impeg2d_bit_stream_get_bit(ps_stream);
ps_dec->u2_back_f_code = impeg2d_bit_stream_get(ps_stream,3);
}
if(ps_dec->u2_is_mpeg2 == 0)
{
ps_dec->au2_f_code[0][0] = ps_dec->au2_f_code[0][1] = ps_dec->u2_forw_f_code;
ps_dec->au2_f_code[1][0] = ps_dec->au2_f_code[1][1] = ps_dec->u2_back_f_code;
}
/*-----------------------------------------------------------------------*/
/* Flush the extra bit value */
/* */
/* while(impeg2d_bit_stream_nxt() == '1') */
/* { */
/* extra_bit_picture 1 */
/* extra_information_picture 8 */
/* } */
/* extra_bit_picture 1 */
/*-----------------------------------------------------------------------*/
while (impeg2d_bit_stream_nxt(ps_stream,1) == 1 &&
ps_stream->u4_offset < ps_stream->u4_max_offset)
{
impeg2d_bit_stream_get(ps_stream,9);
}
impeg2d_bit_stream_get_bit(ps_stream);
impeg2d_next_start_code(ps_dec);
return (IMPEG2D_ERROR_CODES_T)IVD_ERROR_NONE;
}
/*******************************************************************************
*
* Function Name : impeg2d_dec_pic_coding_ext
*
* Description : Reads more picture level parameters
*
* Arguments :
* dec : Decoder context
*
* Values Returned : None
*******************************************************************************/
void impeg2d_dec_pic_coding_ext(dec_state_t *ps_dec)
{
stream_t *ps_stream;
ps_stream = &ps_dec->s_bit_stream;
impeg2d_bit_stream_flush(ps_stream,START_CODE_LEN);
/* extension code identifier */
impeg2d_bit_stream_get(ps_stream,4);
ps_dec->au2_f_code[0][0] = impeg2d_bit_stream_get(ps_stream,4);
ps_dec->au2_f_code[0][1] = impeg2d_bit_stream_get(ps_stream,4);
ps_dec->au2_f_code[1][0] = impeg2d_bit_stream_get(ps_stream,4);
ps_dec->au2_f_code[1][1] = impeg2d_bit_stream_get(ps_stream,4);
ps_dec->u2_intra_dc_precision = impeg2d_bit_stream_get(ps_stream,2);
ps_dec->u2_picture_structure = impeg2d_bit_stream_get(ps_stream,2);
ps_dec->u2_top_field_first = impeg2d_bit_stream_get_bit(ps_stream);
ps_dec->u2_frame_pred_frame_dct = impeg2d_bit_stream_get_bit(ps_stream);
ps_dec->u2_concealment_motion_vectors = impeg2d_bit_stream_get_bit(ps_stream);
ps_dec->u2_q_scale_type = impeg2d_bit_stream_get_bit(ps_stream);
ps_dec->u2_intra_vlc_format = impeg2d_bit_stream_get_bit(ps_stream);
ps_dec->u2_alternate_scan = impeg2d_bit_stream_get_bit(ps_stream);
ps_dec->u2_repeat_first_field = impeg2d_bit_stream_get_bit(ps_stream);
/* Flush chroma_420_type */
impeg2d_bit_stream_get_bit(ps_stream);
ps_dec->u2_progressive_frame = impeg2d_bit_stream_get_bit(ps_stream);
if (impeg2d_bit_stream_get_bit(ps_stream))
{
/* Flush v_axis, field_sequence, burst_amplitude, sub_carrier_phase */
impeg2d_bit_stream_flush(ps_stream,20);
}
impeg2d_next_start_code(ps_dec);
if(VERTICAL_SCAN == ps_dec->u2_alternate_scan)
{
ps_dec->pu1_inv_scan_matrix = (UWORD8 *)gau1_impeg2_inv_scan_vertical;
}
else
{
ps_dec->pu1_inv_scan_matrix = (UWORD8 *)gau1_impeg2_inv_scan_zig_zag;
}
}
/*******************************************************************************
*
* Function Name : impeg2d_dec_slice
*
* Description : Reads Slice level parameters and calls functions that
* decode individual MBs of slice
*
* Arguments :
* dec : Decoder context
*
* Values Returned : None
*******************************************************************************/
IMPEG2D_ERROR_CODES_T impeg2d_dec_slice(dec_state_t *ps_dec)
{
stream_t *ps_stream;
UWORD32 u4_slice_vertical_position;
UWORD32 u4_slice_vertical_position_extension;
IMPEG2D_ERROR_CODES_T e_error;
ps_stream = &ps_dec->s_bit_stream;
/*------------------------------------------------------------------------*/
/* All the profiles supported require restricted slice structure. Hence */
/* there is no need to store slice_vertical_position. Note that max */
/* height supported does not exceed 2800 and scalablity is not supported */
/*------------------------------------------------------------------------*/
/* Remove the slice start code */
impeg2d_bit_stream_flush(ps_stream,START_CODE_PREFIX_LEN);
u4_slice_vertical_position = impeg2d_bit_stream_get(ps_stream, 8);
if(u4_slice_vertical_position > 2800)
{
u4_slice_vertical_position_extension = impeg2d_bit_stream_get(ps_stream, 3);
u4_slice_vertical_position += (u4_slice_vertical_position_extension << 7);
}
if((u4_slice_vertical_position > ps_dec->u2_num_vert_mb) ||
(u4_slice_vertical_position == 0))
{
return IMPEG2D_INVALID_VERT_SIZE;
}
// change the mb_y to point to slice_vertical_position
u4_slice_vertical_position--;
if (ps_dec->u2_mb_y != u4_slice_vertical_position)
{
ps_dec->u2_mb_y = u4_slice_vertical_position;
ps_dec->u2_mb_x = 0;
}
ps_dec->u2_first_mb = 1;
/*------------------------------------------------------------------------*/
/* Quant scale code decoding */
/*------------------------------------------------------------------------*/
{
UWORD16 u2_quant_scale_code;
u2_quant_scale_code = impeg2d_bit_stream_get(ps_stream,5);
ps_dec->u1_quant_scale = (ps_dec->u2_q_scale_type) ?
gau1_impeg2_non_linear_quant_scale[u2_quant_scale_code] : (u2_quant_scale_code << 1);
}
if (impeg2d_bit_stream_nxt(ps_stream,1) == 1)
{
impeg2d_bit_stream_flush(ps_stream,9);
/* Flush extra bit information */
while (impeg2d_bit_stream_nxt(ps_stream,1) == 1 &&
ps_stream->u4_offset < ps_stream->u4_max_offset)
{
impeg2d_bit_stream_flush(ps_stream,9);
}
}
impeg2d_bit_stream_get_bit(ps_stream);
/* Reset the DC predictors to reset values given in Table 7.2 at the start*/
/* of slice data */
ps_dec->u2_def_dc_pred[Y_LUMA] = 128 << ps_dec->u2_intra_dc_precision;
ps_dec->u2_def_dc_pred[U_CHROMA] = 128 << ps_dec->u2_intra_dc_precision;
ps_dec->u2_def_dc_pred[V_CHROMA] = 128 << ps_dec->u2_intra_dc_precision;
/*------------------------------------------------------------------------*/
/* dec->DecMBsinSlice() implements the following psuedo code from standard*/
/* do */
/* { */
/* macroblock() */
/* } while (impeg2d_bit_stream_nxt() != '000 0000 0000 0000 0000 0000') */
/*------------------------------------------------------------------------*/
e_error = ps_dec->pf_decode_slice(ps_dec);
if ((IMPEG2D_ERROR_CODES_T)IVD_ERROR_NONE != e_error)
{
return e_error;
}
/* Check for the MBy index instead of number of MBs left, because the
* number of MBs left in case of multi-thread decode is the number of MBs
* in that row only
*/
if(ps_dec->u2_mb_y < ps_dec->u2_num_vert_mb)
impeg2d_next_start_code(ps_dec);
return (IMPEG2D_ERROR_CODES_T)IVD_ERROR_NONE;
}
void impeg2d_dec_pic_data_thread(dec_state_t *ps_dec)
{
WORD32 i4_continue_decode;
WORD32 i4_cur_row, temp;
UWORD32 u4_bits_read;
WORD32 i4_dequeue_job;
IMPEG2D_ERROR_CODES_T e_error;
i4_cur_row = ps_dec->u2_mb_y + 1;
i4_continue_decode = 1;
i4_dequeue_job = 1;
do
{
if(i4_cur_row > ps_dec->u2_num_vert_mb)
{
i4_continue_decode = 0;
break;
}
{
if((ps_dec->i4_num_cores> 1) && (i4_dequeue_job))
{
job_t s_job;
IV_API_CALL_STATUS_T e_ret;
UWORD8 *pu1_buf;
e_ret = impeg2_jobq_dequeue(ps_dec->pv_jobq, &s_job, sizeof(s_job), 1, 1);
if(e_ret != IV_SUCCESS)
break;
if(CMD_PROCESS == s_job.i4_cmd)
{
pu1_buf = ps_dec->pu1_inp_bits_buf + s_job.i4_bistream_ofst;
impeg2d_bit_stream_init(&(ps_dec->s_bit_stream), pu1_buf,
(ps_dec->u4_num_inp_bytes - s_job.i4_bistream_ofst) + 8);
i4_cur_row = s_job.i2_start_mb_y;
ps_dec->i4_start_mb_y = s_job.i2_start_mb_y;
ps_dec->i4_end_mb_y = s_job.i2_end_mb_y;
ps_dec->u2_mb_x = 0;
ps_dec->u2_mb_y = ps_dec->i4_start_mb_y;
ps_dec->u2_num_mbs_left = (ps_dec->i4_end_mb_y - ps_dec->i4_start_mb_y) * ps_dec->u2_num_horiz_mb;
}
else
{
WORD32 start_row;
WORD32 num_rows;
start_row = s_job.i2_start_mb_y << 4;
num_rows = MIN((s_job.i2_end_mb_y << 4), ps_dec->u2_vertical_size);
num_rows -= start_row;
if(ps_dec->u4_deinterlace && (0 == ps_dec->u2_progressive_frame))
{
impeg2d_deinterlace(ps_dec,
ps_dec->ps_disp_pic,
ps_dec->ps_disp_frm_buf,
start_row,
num_rows);
}
else
{
impeg2d_format_convert(ps_dec, ps_dec->ps_disp_pic,
ps_dec->ps_disp_frm_buf,
start_row, num_rows);
}
break;
}
}
e_error = impeg2d_dec_slice(ps_dec);
if ((IMPEG2D_ERROR_CODES_T)IVD_ERROR_NONE != e_error)
{
impeg2d_next_start_code(ps_dec);
}
}
/* Detecting next slice start code */
while(1)
{
// skip (dec->u4_num_cores-1) rows
u4_bits_read = impeg2d_bit_stream_nxt(&ps_dec->s_bit_stream,START_CODE_LEN);
temp = u4_bits_read & 0xFF;
i4_continue_decode = (((u4_bits_read >> 8) == 0x01) && (temp) && (temp <= 0xAF));
if (1 == ps_dec->i4_num_cores && 0 == ps_dec->u2_num_mbs_left)
{
i4_continue_decode = 0;
android_errorWriteLog(0x534e4554, "26070014");
}
if(i4_continue_decode)
{
/* If the slice is from the same row, then continue decoding without dequeue */
if((temp - 1) == i4_cur_row)
{
i4_dequeue_job = 0;
break;
}
if(temp < ps_dec->i4_end_mb_y)
{
i4_cur_row = ps_dec->u2_mb_y;
}
else
{
i4_dequeue_job = 1;
}
break;
}
else
break;
}
}while(i4_continue_decode);
if(ps_dec->i4_num_cores > 1)
{
while(1)
{
job_t s_job;
IV_API_CALL_STATUS_T e_ret;
e_ret = impeg2_jobq_dequeue(ps_dec->pv_jobq, &s_job, sizeof(s_job), 1, 1);
if(e_ret != IV_SUCCESS)
break;
if(CMD_FMTCONV == s_job.i4_cmd)
{
WORD32 start_row;
WORD32 num_rows;
start_row = s_job.i2_start_mb_y << 4;
num_rows = MIN((s_job.i2_end_mb_y << 4), ps_dec->u2_vertical_size);
num_rows -= start_row;
if(ps_dec->u4_deinterlace && (0 == ps_dec->u2_progressive_frame))
{
impeg2d_deinterlace(ps_dec,
ps_dec->ps_disp_pic,
ps_dec->ps_disp_frm_buf,
start_row,
num_rows);
}
else
{
impeg2d_format_convert(ps_dec,
ps_dec->ps_disp_pic,
ps_dec->ps_disp_frm_buf,
start_row,
num_rows);
}
}
}
}
else
{
if((NULL != ps_dec->ps_disp_pic) && ((0 == ps_dec->u4_share_disp_buf) || (IV_YUV_420P != ps_dec->i4_chromaFormat)))
{
if(ps_dec->u4_deinterlace && (0 == ps_dec->u2_progressive_frame))
{
impeg2d_deinterlace(ps_dec,
ps_dec->ps_disp_pic,
ps_dec->ps_disp_frm_buf,
0,
ps_dec->u2_vertical_size);
}
else
{
impeg2d_format_convert(ps_dec, ps_dec->ps_disp_pic,
ps_dec->ps_disp_frm_buf,
0, ps_dec->u2_vertical_size);
}
}
}
}
static WORD32 impeg2d_init_thread_dec_ctxt(dec_state_t *ps_dec,
dec_state_t *ps_dec_thd,
WORD32 i4_min_mb_y)
{
UNUSED(i4_min_mb_y);
ps_dec_thd->i4_start_mb_y = 0;
ps_dec_thd->i4_end_mb_y = ps_dec->u2_num_vert_mb;
ps_dec_thd->u2_mb_x = 0;
ps_dec_thd->u2_mb_y = 0;
ps_dec_thd->u2_is_mpeg2 = ps_dec->u2_is_mpeg2;
ps_dec_thd->u2_frame_width = ps_dec->u2_frame_width;
ps_dec_thd->u2_frame_height = ps_dec->u2_frame_height;
ps_dec_thd->u2_picture_width = ps_dec->u2_picture_width;
ps_dec_thd->u2_horizontal_size = ps_dec->u2_horizontal_size;
ps_dec_thd->u2_vertical_size = ps_dec->u2_vertical_size;
ps_dec_thd->u2_create_max_width = ps_dec->u2_create_max_width;
ps_dec_thd->u2_create_max_height = ps_dec->u2_create_max_height;
ps_dec_thd->u2_header_done = ps_dec->u2_header_done;
ps_dec_thd->u2_decode_header = ps_dec->u2_decode_header;
ps_dec_thd->u2_num_horiz_mb = ps_dec->u2_num_horiz_mb;
ps_dec_thd->u2_num_vert_mb = ps_dec->u2_num_vert_mb;
ps_dec_thd->u2_num_flds_decoded = ps_dec->u2_num_flds_decoded;
ps_dec_thd->u4_frm_buf_stride = ps_dec->u4_frm_buf_stride;
ps_dec_thd->u2_field_dct = ps_dec->u2_field_dct;
ps_dec_thd->u2_read_dct_type = ps_dec->u2_read_dct_type;
ps_dec_thd->u2_read_motion_type = ps_dec->u2_read_motion_type;
ps_dec_thd->u2_motion_type = ps_dec->u2_motion_type;
ps_dec_thd->pu2_mb_type = ps_dec->pu2_mb_type;
ps_dec_thd->u2_fld_pic = ps_dec->u2_fld_pic;
ps_dec_thd->u2_frm_pic = ps_dec->u2_frm_pic;
ps_dec_thd->u2_fld_parity = ps_dec->u2_fld_parity;
ps_dec_thd->au2_fcode_data[0] = ps_dec->au2_fcode_data[0];
ps_dec_thd->au2_fcode_data[1] = ps_dec->au2_fcode_data[1];
ps_dec_thd->u1_quant_scale = ps_dec->u1_quant_scale;
ps_dec_thd->u2_num_mbs_left = ps_dec->u2_num_mbs_left;
ps_dec_thd->u2_first_mb = ps_dec->u2_first_mb;
ps_dec_thd->u2_num_skipped_mbs = ps_dec->u2_num_skipped_mbs;
memcpy(&ps_dec_thd->s_cur_frm_buf, &ps_dec->s_cur_frm_buf, sizeof(yuv_buf_t));
memcpy(&ps_dec_thd->as_recent_fld[0][0], &ps_dec->as_recent_fld[0][0], sizeof(yuv_buf_t));
memcpy(&ps_dec_thd->as_recent_fld[0][1], &ps_dec->as_recent_fld[0][1], sizeof(yuv_buf_t));
memcpy(&ps_dec_thd->as_recent_fld[1][0], &ps_dec->as_recent_fld[1][0], sizeof(yuv_buf_t));
memcpy(&ps_dec_thd->as_recent_fld[1][1], &ps_dec->as_recent_fld[1][1], sizeof(yuv_buf_t));
memcpy(&ps_dec_thd->as_ref_buf, &ps_dec->as_ref_buf, sizeof(yuv_buf_t) * 2 * 2);
ps_dec_thd->pf_decode_slice = ps_dec->pf_decode_slice;
ps_dec_thd->pf_vld_inv_quant = ps_dec->pf_vld_inv_quant;
memcpy(ps_dec_thd->pf_idct_recon, ps_dec->pf_idct_recon, sizeof(ps_dec->pf_idct_recon));
memcpy(ps_dec_thd->pf_mc, ps_dec->pf_mc, sizeof(ps_dec->pf_mc));
ps_dec_thd->pf_interpolate = ps_dec->pf_interpolate;
ps_dec_thd->pf_copy_mb = ps_dec->pf_copy_mb;
ps_dec_thd->pf_fullx_halfy_8x8 = ps_dec->pf_fullx_halfy_8x8;
ps_dec_thd->pf_halfx_fully_8x8 = ps_dec->pf_halfx_fully_8x8;
ps_dec_thd->pf_halfx_halfy_8x8 = ps_dec->pf_halfx_halfy_8x8;
ps_dec_thd->pf_fullx_fully_8x8 = ps_dec->pf_fullx_fully_8x8;
ps_dec_thd->pf_memset_8bit_8x8_block = ps_dec->pf_memset_8bit_8x8_block;
ps_dec_thd->pf_memset_16bit_8x8_linear_block = ps_dec->pf_memset_16bit_8x8_linear_block;
ps_dec_thd->pf_copy_yuv420p_buf = ps_dec->pf_copy_yuv420p_buf;
ps_dec_thd->pf_fmt_conv_yuv420p_to_yuv422ile = ps_dec->pf_fmt_conv_yuv420p_to_yuv422ile;
ps_dec_thd->pf_fmt_conv_yuv420p_to_yuv420sp_uv = ps_dec->pf_fmt_conv_yuv420p_to_yuv420sp_uv;
ps_dec_thd->pf_fmt_conv_yuv420p_to_yuv420sp_vu = ps_dec->pf_fmt_conv_yuv420p_to_yuv420sp_vu;
memcpy(ps_dec_thd->au1_intra_quant_matrix, ps_dec->au1_intra_quant_matrix, NUM_PELS_IN_BLOCK * sizeof(UWORD8));
memcpy(ps_dec_thd->au1_inter_quant_matrix, ps_dec->au1_inter_quant_matrix, NUM_PELS_IN_BLOCK * sizeof(UWORD8));
ps_dec_thd->pu1_inv_scan_matrix = ps_dec->pu1_inv_scan_matrix;
ps_dec_thd->u2_progressive_sequence = ps_dec->u2_progressive_sequence;
ps_dec_thd->e_pic_type = ps_dec->e_pic_type;
ps_dec_thd->u2_full_pel_forw_vector = ps_dec->u2_full_pel_forw_vector;
ps_dec_thd->u2_forw_f_code = ps_dec->u2_forw_f_code;
ps_dec_thd->u2_full_pel_back_vector = ps_dec->u2_full_pel_back_vector;
ps_dec_thd->u2_back_f_code = ps_dec->u2_back_f_code;
memcpy(ps_dec_thd->ai2_mv, ps_dec->ai2_mv, (2*2*2)*sizeof(WORD16));
memcpy(ps_dec_thd->au2_f_code, ps_dec->au2_f_code, (2*2)*sizeof(UWORD16));
ps_dec_thd->u2_intra_dc_precision = ps_dec->u2_intra_dc_precision;
ps_dec_thd->u2_picture_structure = ps_dec->u2_picture_structure;
ps_dec_thd->u2_top_field_first = ps_dec->u2_top_field_first;
ps_dec_thd->u2_frame_pred_frame_dct = ps_dec->u2_frame_pred_frame_dct;
ps_dec_thd->u2_concealment_motion_vectors = ps_dec->u2_concealment_motion_vectors;
ps_dec_thd->u2_q_scale_type = ps_dec->u2_q_scale_type;
ps_dec_thd->u2_intra_vlc_format = ps_dec->u2_intra_vlc_format;
ps_dec_thd->u2_alternate_scan = ps_dec->u2_alternate_scan;
ps_dec_thd->u2_repeat_first_field = ps_dec->u2_repeat_first_field;
ps_dec_thd->u2_progressive_frame = ps_dec->u2_progressive_frame;
ps_dec_thd->pu1_inp_bits_buf = ps_dec->pu1_inp_bits_buf;
ps_dec_thd->u4_num_inp_bytes = ps_dec->u4_num_inp_bytes;
ps_dec_thd->pv_jobq = ps_dec->pv_jobq;
ps_dec_thd->pv_jobq_buf = ps_dec->pv_jobq_buf;
ps_dec_thd->i4_jobq_buf_size = ps_dec->i4_jobq_buf_size;
ps_dec_thd->u2_frame_rate_code = ps_dec->u2_frame_rate_code;
ps_dec_thd->u2_frame_rate_extension_n = ps_dec->u2_frame_rate_extension_n;
ps_dec_thd->u2_frame_rate_extension_d = ps_dec->u2_frame_rate_extension_d;
ps_dec_thd->u2_framePeriod = ps_dec->u2_framePeriod;
ps_dec_thd->u2_display_horizontal_size = ps_dec->u2_display_horizontal_size;
ps_dec_thd->u2_display_vertical_size = ps_dec->u2_display_vertical_size;
ps_dec_thd->u2_aspect_ratio_info = ps_dec->u2_aspect_ratio_info;
ps_dec_thd->ps_func_bi_direct = ps_dec->ps_func_bi_direct;
ps_dec_thd->ps_func_forw_or_back = ps_dec->ps_func_forw_or_back;
ps_dec_thd->pv_deinterlacer_ctxt = ps_dec->pv_deinterlacer_ctxt;
ps_dec_thd->ps_deint_pic = ps_dec->ps_deint_pic;
return 0;
}
WORD32 impeg2d_get_slice_pos(dec_state_multi_core_t *ps_dec_state_multi_core)
{
WORD32 u4_bits;
WORD32 i4_row;
dec_state_t *ps_dec = ps_dec_state_multi_core->ps_dec_state[0];
WORD32 i4_prev_row;
stream_t s_bitstrm;
WORD32 i4_start_row;
WORD32 i4_slice_bistream_ofst;
WORD32 i;
s_bitstrm = ps_dec->s_bit_stream;
i4_prev_row = -1;
ps_dec_state_multi_core->ps_dec_state[0]->i4_start_mb_y = 0;
ps_dec_state_multi_core->ps_dec_state[1]->i4_start_mb_y = -1;
ps_dec_state_multi_core->ps_dec_state[2]->i4_start_mb_y = -1;
ps_dec_state_multi_core->ps_dec_state[3]->i4_start_mb_y = -1;
ps_dec_state_multi_core->ps_dec_state[0]->i4_end_mb_y = ps_dec->u2_num_vert_mb;
ps_dec_state_multi_core->ps_dec_state[1]->i4_end_mb_y = -1;
ps_dec_state_multi_core->ps_dec_state[2]->i4_end_mb_y = -1;
ps_dec_state_multi_core->ps_dec_state[3]->i4_end_mb_y = -1;
if(ps_dec->i4_num_cores == 1)
return 0;
/* Reset the jobq to start of the jobq buffer */
impeg2_jobq_reset((jobq_t *)ps_dec->pv_jobq);
i4_start_row = -1;
i4_slice_bistream_ofst = 0;
while(1)
{
WORD32 i4_is_slice;
if(s_bitstrm.u4_offset + START_CODE_LEN >= s_bitstrm.u4_max_offset)
{
break;
}
u4_bits = impeg2d_bit_stream_nxt(&s_bitstrm,START_CODE_LEN);
i4_row = u4_bits & 0xFF;
/* Detect end of frame */
i4_is_slice = (((u4_bits >> 8) == 0x01) && (i4_row) && (i4_row <= ps_dec->u2_num_vert_mb));
if(!i4_is_slice)
break;
i4_row -= 1;
if(i4_prev_row < i4_row)
{
/* Create a job for previous slice row */
if(i4_start_row != -1)
{
job_t s_job;
IV_API_CALL_STATUS_T ret;
s_job.i2_start_mb_y = i4_start_row;
s_job.i2_end_mb_y = i4_row;
s_job.i4_cmd = CMD_PROCESS;
s_job.i4_bistream_ofst = i4_slice_bistream_ofst;
ret = impeg2_jobq_queue(ps_dec->pv_jobq, &s_job, sizeof(s_job), 1, 0);
if(ret != IV_SUCCESS)
return ret;
}
/* Store current slice's bitstream offset */
i4_slice_bistream_ofst = s_bitstrm.u4_offset >> 3;
i4_slice_bistream_ofst -= (size_t)s_bitstrm.pv_bs_buf & 3;
i4_prev_row = i4_row;
/* Store current slice's row position */
i4_start_row = i4_row;
} else if (i4_prev_row > i4_row) {
android_errorWriteLog(0x534e4554, "26070014");
}
impeg2d_bit_stream_flush(&s_bitstrm, START_CODE_LEN);
// flush bytes till next start code
/* Flush the bytes till a start code is encountered */
while(impeg2d_bit_stream_nxt(&s_bitstrm, 24) != START_CODE_PREFIX)
{
impeg2d_bit_stream_get(&s_bitstrm, 8);
if(s_bitstrm.u4_offset >= s_bitstrm.u4_max_offset)
{
break;
}
}
}
/* Create job for the last slice row */
{
job_t s_job;
IV_API_CALL_STATUS_T e_ret;
s_job.i2_start_mb_y = i4_start_row;
s_job.i2_end_mb_y = ps_dec->u2_num_vert_mb;
s_job.i4_cmd = CMD_PROCESS;
s_job.i4_bistream_ofst = i4_slice_bistream_ofst;
e_ret = impeg2_jobq_queue(ps_dec->pv_jobq, &s_job, sizeof(s_job), 1, 0);
if(e_ret != IV_SUCCESS)
return e_ret;
}
if((NULL != ps_dec->ps_disp_pic) && ((0 == ps_dec->u4_share_disp_buf) || (IV_YUV_420P != ps_dec->i4_chromaFormat)))
{
for(i = 0; i < ps_dec->u2_vertical_size; i+=64)
{
job_t s_job;
IV_API_CALL_STATUS_T ret;
s_job.i2_start_mb_y = i;
s_job.i2_start_mb_y >>= 4;
s_job.i2_end_mb_y = (i + 64);
s_job.i2_end_mb_y >>= 4;
s_job.i4_cmd = CMD_FMTCONV;
s_job.i4_bistream_ofst = 0;
ret = impeg2_jobq_queue(ps_dec->pv_jobq, &s_job, sizeof(s_job), 1, 0);
if(ret != IV_SUCCESS)
return ret;
}
}
impeg2_jobq_terminate(ps_dec->pv_jobq);
ps_dec->i4_bytes_consumed = s_bitstrm.u4_offset >> 3;
ps_dec->i4_bytes_consumed -= ((size_t)s_bitstrm.pv_bs_buf & 3);
return 0;
}
/*******************************************************************************
*
* Function Name : impeg2d_dec_pic_data
*
* Description : It intializes several parameters and decodes a Picture
* till any slice is left.
*
* Arguments :
* dec : Decoder context
*
* Values Returned : None
*******************************************************************************/
void impeg2d_dec_pic_data(dec_state_t *ps_dec)
{
WORD32 i;
dec_state_multi_core_t *ps_dec_state_multi_core;
UWORD32 u4_error_code;
dec_state_t *ps_dec_thd;
WORD32 i4_status;
WORD32 i4_min_mb_y;
/* Resetting the MB address and MB coordinates at the start of the Frame */
ps_dec->u2_mb_x = ps_dec->u2_mb_y = 0;
u4_error_code = 0;
ps_dec_state_multi_core = ps_dec->ps_dec_state_multi_core;
impeg2d_get_slice_pos(ps_dec_state_multi_core);
i4_min_mb_y = 1;
for(i=0; i < ps_dec->i4_num_cores - 1; i++)
{
// initialize decoder context for thread
// launch dec->u4_num_cores-1 threads
ps_dec_thd = ps_dec_state_multi_core->ps_dec_state[i+1];
ps_dec_thd->ps_disp_pic = ps_dec->ps_disp_pic;
ps_dec_thd->ps_disp_frm_buf = ps_dec->ps_disp_frm_buf;
i4_status = impeg2d_init_thread_dec_ctxt(ps_dec, ps_dec_thd, i4_min_mb_y);
//impeg2d_dec_pic_data_thread(ps_dec_thd);
if(i4_status == 0)
{
ithread_create(ps_dec_thd->pv_codec_thread_handle, NULL, (void *)impeg2d_dec_pic_data_thread, ps_dec_thd);
ps_dec_state_multi_core->au4_thread_launched[i + 1] = 1;
i4_min_mb_y = ps_dec_thd->u2_mb_y + 1;
}
else
{
ps_dec_state_multi_core->au4_thread_launched[i + 1] = 0;
break;
}
}
impeg2d_dec_pic_data_thread(ps_dec);
// wait for threads to complete
for(i=0; i < (ps_dec->i4_num_cores - 1); i++)
{
if(ps_dec_state_multi_core->au4_thread_launched[i + 1] == 1)
{
ps_dec_thd = ps_dec_state_multi_core->ps_dec_state[i+1];
ithread_join(ps_dec_thd->pv_codec_thread_handle, NULL);
}
}
ps_dec->u4_error_code = u4_error_code;
}
/*******************************************************************************
*
* Function Name : impeg2d_flush_ext_and_user_data
*
* Description : Flushes the extension and user data present in the
* stream_t
*
* Arguments :
* dec : Decoder context
*
* Values Returned : None
*******************************************************************************/
void impeg2d_flush_ext_and_user_data(dec_state_t *ps_dec)
{
UWORD32 u4_start_code;
stream_t *ps_stream;
ps_stream = &ps_dec->s_bit_stream;
u4_start_code = impeg2d_bit_stream_nxt(ps_stream,START_CODE_LEN);
while((u4_start_code == EXTENSION_START_CODE || u4_start_code == USER_DATA_START_CODE) &&
(ps_stream->u4_offset < ps_stream->u4_max_offset))
{
impeg2d_bit_stream_flush(ps_stream,START_CODE_LEN);
while(impeg2d_bit_stream_nxt(ps_stream,START_CODE_PREFIX_LEN) != START_CODE_PREFIX &&
(ps_stream->u4_offset < ps_stream->u4_max_offset))
{
impeg2d_bit_stream_flush(ps_stream,8);
}
u4_start_code = impeg2d_bit_stream_nxt(ps_stream,START_CODE_LEN);
}
}
/*******************************************************************************
*
* Function Name : impeg2d_dec_user_data
*
* Description : Flushes the user data present in the stream_t
*
* Arguments :
* dec : Decoder context
*
* Values Returned : None
*******************************************************************************/
void impeg2d_dec_user_data(dec_state_t *ps_dec)
{
UWORD32 u4_start_code;
stream_t *ps_stream;
ps_stream = &ps_dec->s_bit_stream;
u4_start_code = impeg2d_bit_stream_nxt(ps_stream,START_CODE_LEN);
while(u4_start_code == USER_DATA_START_CODE)
{
impeg2d_bit_stream_flush(ps_stream,START_CODE_LEN);
while((impeg2d_bit_stream_nxt(ps_stream,START_CODE_PREFIX_LEN) != START_CODE_PREFIX) &&
(ps_stream->u4_offset < ps_stream->u4_max_offset))
{
impeg2d_bit_stream_flush(ps_stream,8);
}
u4_start_code = impeg2d_bit_stream_nxt(ps_stream,START_CODE_LEN);
}
}
/*******************************************************************************
* Function Name : impeg2d_dec_seq_ext_data
*
* Description : Decodes the extension data following Sequence
* Extension. It flushes any user data if present
*
* Arguments :
* dec : Decoder context
*
* Values Returned : None
*******************************************************************************/
IMPEG2D_ERROR_CODES_T impeg2d_dec_seq_ext_data(dec_state_t *ps_dec)
{
stream_t *ps_stream;
UWORD32 u4_start_code;
IMPEG2D_ERROR_CODES_T e_error;
e_error = (IMPEG2D_ERROR_CODES_T) IVD_ERROR_NONE;
ps_stream = &ps_dec->s_bit_stream;
u4_start_code = impeg2d_bit_stream_nxt(ps_stream,START_CODE_LEN);
while( (u4_start_code == EXTENSION_START_CODE ||
u4_start_code == USER_DATA_START_CODE) &&
(IMPEG2D_ERROR_CODES_T)IVD_ERROR_NONE == e_error &&
(ps_stream->u4_offset < ps_stream->u4_max_offset))
{
if(u4_start_code == USER_DATA_START_CODE)
{
impeg2d_dec_user_data(ps_dec);
}
else
{
impeg2d_bit_stream_flush(ps_stream,START_CODE_LEN);
u4_start_code = impeg2d_bit_stream_nxt(ps_stream,EXT_ID_LEN);
switch(u4_start_code)
{
case SEQ_DISPLAY_EXT_ID:
impeg2d_dec_seq_disp_ext(ps_dec);
break;
case SEQ_SCALABLE_EXT_ID:
e_error = IMPEG2D_SCALABILITIY_NOT_SUPPORTED;
break;
default:
/* In case its a reserved extension code */
impeg2d_bit_stream_flush(ps_stream,EXT_ID_LEN);
impeg2d_peek_next_start_code(ps_dec);
break;
}
}
u4_start_code = impeg2d_bit_stream_nxt(ps_stream,START_CODE_LEN);
}
return e_error;
}
/*******************************************************************************
* Function Name : impeg2d_dec_pic_ext_data
*
* Description : Decodes the extension data following Picture Coding
* Extension. It flushes any user data if present
*
* Arguments :
* dec : Decoder context
*
* Values Returned : None
*******************************************************************************/
IMPEG2D_ERROR_CODES_T impeg2d_dec_pic_ext_data(dec_state_t *ps_dec)
{
stream_t *ps_stream;
UWORD32 u4_start_code;
IMPEG2D_ERROR_CODES_T e_error;
e_error = (IMPEG2D_ERROR_CODES_T)IVD_ERROR_NONE;
ps_stream = &ps_dec->s_bit_stream;
u4_start_code = impeg2d_bit_stream_nxt(ps_stream,START_CODE_LEN);
while ( (u4_start_code == EXTENSION_START_CODE ||
u4_start_code == USER_DATA_START_CODE) &&
(IMPEG2D_ERROR_CODES_T)IVD_ERROR_NONE == e_error &&
(ps_stream->u4_offset < ps_stream->u4_max_offset))
{
if(u4_start_code == USER_DATA_START_CODE)
{
impeg2d_dec_user_data(ps_dec);
}
else
{
impeg2d_bit_stream_flush(ps_stream,START_CODE_LEN);
u4_start_code = impeg2d_bit_stream_nxt(ps_stream,EXT_ID_LEN);
switch(u4_start_code)
{
case QUANT_MATRIX_EXT_ID:
impeg2d_dec_quant_matrix_ext(ps_dec);
break;
case COPYRIGHT_EXT_ID:
impeg2d_dec_copyright_ext(ps_dec);
break;
case PIC_DISPLAY_EXT_ID:
impeg2d_dec_pic_disp_ext(ps_dec);
break;
case CAMERA_PARAM_EXT_ID:
impeg2d_dec_cam_param_ext(ps_dec);
break;
case ITU_T_EXT_ID:
impeg2d_dec_itu_t_ext(ps_dec);
break;
case PIC_SPATIAL_SCALABLE_EXT_ID:
case PIC_TEMPORAL_SCALABLE_EXT_ID:
e_error = IMPEG2D_SCALABLITY_NOT_SUP;
break;
default:
/* In case its a reserved extension code */
impeg2d_bit_stream_flush(ps_stream,EXT_ID_LEN);
impeg2d_next_start_code(ps_dec);
break;
}
}
u4_start_code = impeg2d_bit_stream_nxt(ps_stream,START_CODE_LEN);
}
return e_error;
}
/*******************************************************************************
*
* Function Name : impeg2d_process_video_header
*
* Description : Processes video sequence header information
*
* Arguments :
* dec : Decoder context
*
* Values Returned : None
*******************************************************************************/
IMPEG2D_ERROR_CODES_T impeg2d_process_video_header(dec_state_t *ps_dec)
{
stream_t *ps_stream;
ps_stream = &ps_dec->s_bit_stream;
IMPEG2D_ERROR_CODES_T e_error;
impeg2d_next_code(ps_dec, SEQUENCE_HEADER_CODE);
if(ps_dec->s_bit_stream.u4_offset < ps_dec->s_bit_stream.u4_max_offset)
{
e_error = impeg2d_dec_seq_hdr(ps_dec);
if ((IMPEG2D_ERROR_CODES_T)IVD_ERROR_NONE != e_error)
{
return e_error;
}
}
else
{
return IMPEG2D_BITSTREAM_BUFF_EXCEEDED_ERR;
}
if (impeg2d_bit_stream_nxt(ps_stream,START_CODE_LEN) == EXTENSION_START_CODE)
{
/* MPEG2 Decoder */
if(ps_dec->s_bit_stream.u4_offset < ps_dec->s_bit_stream.u4_max_offset)
{
e_error = impeg2d_dec_seq_ext(ps_dec);
if ((IMPEG2D_ERROR_CODES_T)IVD_ERROR_NONE != e_error)
{
return e_error;
}
}
else
{
return IMPEG2D_BITSTREAM_BUFF_EXCEEDED_ERR;
}
if(ps_dec->s_bit_stream.u4_offset < ps_dec->s_bit_stream.u4_max_offset)
{
e_error = impeg2d_dec_seq_ext_data(ps_dec);
if ((IMPEG2D_ERROR_CODES_T)IVD_ERROR_NONE != e_error)
{
return e_error;
}
}
return impeg2d_init_video_state(ps_dec,MPEG_2_VIDEO);
}
else
{
/* MPEG1 Decoder */
if(ps_dec->s_bit_stream.u4_offset < ps_dec->s_bit_stream.u4_max_offset)
{
impeg2d_flush_ext_and_user_data(ps_dec);
}
return impeg2d_init_video_state(ps_dec,MPEG_1_VIDEO);
}
}
/*******************************************************************************
*
* Function Name : impeg2d_process_video_bit_stream
*
* Description : Processes video sequence header information
*
* Arguments :
* dec : Decoder context
*
* Values Returned : None
*******************************************************************************/
IMPEG2D_ERROR_CODES_T impeg2d_process_video_bit_stream(dec_state_t *ps_dec)
{
stream_t *ps_stream;
UWORD32 u4_next_bits, u4_start_code_found;
IMPEG2D_ERROR_CODES_T e_error;
ps_stream = &ps_dec->s_bit_stream;
impeg2d_next_start_code(ps_dec);
/* If the stream is MPEG-2 compliant stream */
u4_start_code_found = 0;
if(ps_dec->u2_is_mpeg2)
{
/* MPEG2 decoding starts */
while((u4_start_code_found == 0) && (ps_dec->s_bit_stream.u4_offset < ps_dec->s_bit_stream.u4_max_offset))
{
u4_next_bits = impeg2d_bit_stream_nxt(ps_stream,START_CODE_LEN);
if(u4_next_bits == SEQUENCE_HEADER_CODE)
{
if(ps_dec->s_bit_stream.u4_offset < ps_dec->s_bit_stream.u4_max_offset)
{
e_error = impeg2d_dec_seq_hdr(ps_dec);
if ((IMPEG2D_ERROR_CODES_T)IVD_ERROR_NONE != e_error)
{
return e_error;
}
u4_start_code_found = 0;
}
else
{
return IMPEG2D_BITSTREAM_BUFF_EXCEEDED_ERR;
}
if(ps_dec->s_bit_stream.u4_offset < ps_dec->s_bit_stream.u4_max_offset)
{
IMPEG2D_ERROR_CODES_T e_error;
e_error = impeg2d_dec_seq_ext(ps_dec);
if ((IMPEG2D_ERROR_CODES_T)IVD_ERROR_NONE != e_error)
{
return e_error;
}
u4_start_code_found = 0;
}
else
{
return IMPEG2D_BITSTREAM_BUFF_EXCEEDED_ERR;
}
}
else if((u4_next_bits == USER_DATA_START_CODE) || (u4_next_bits == EXTENSION_START_CODE))
{
if(ps_dec->s_bit_stream.u4_offset < ps_dec->s_bit_stream.u4_max_offset)
{
impeg2d_dec_seq_ext_data(ps_dec);
u4_start_code_found = 0;
}
}
else if((ps_dec->s_bit_stream.u4_offset < ps_dec->s_bit_stream.u4_max_offset)
&& (u4_next_bits == GOP_START_CODE))
{
impeg2d_dec_grp_of_pic_hdr(ps_dec);
impeg2d_dec_user_data(ps_dec);
u4_start_code_found = 0;
}
else if((ps_dec->s_bit_stream.u4_offset < ps_dec->s_bit_stream.u4_max_offset)
&& (u4_next_bits == PICTURE_START_CODE))
{
e_error = impeg2d_dec_pic_hdr(ps_dec);
if ((IMPEG2D_ERROR_CODES_T)IVD_ERROR_NONE != e_error)
{
return e_error;
}
impeg2d_dec_pic_coding_ext(ps_dec);
e_error = impeg2d_dec_pic_ext_data(ps_dec);
if ((IMPEG2D_ERROR_CODES_T)IVD_ERROR_NONE != e_error)
{
return e_error;
}
impeg2d_pre_pic_dec_proc(ps_dec);
impeg2d_dec_pic_data(ps_dec);
impeg2d_post_pic_dec_proc(ps_dec);
u4_start_code_found = 1;
}
else
{
FLUSH_BITS(ps_dec->s_bit_stream.u4_offset, ps_dec->s_bit_stream.u4_buf, ps_dec->s_bit_stream.u4_buf_nxt, 8, ps_dec->s_bit_stream.pu4_buf_aligned);
}
if(u4_start_code_found == 0)
{
impeg2d_next_start_code(ps_dec);
}
}
if((u4_start_code_found == 0) && (ps_dec->s_bit_stream.u4_offset > ps_dec->s_bit_stream.u4_max_offset))
{
return IMPEG2D_FRM_HDR_START_CODE_NOT_FOUND;
}
}
/* If the stream is MPEG-1 compliant stream */
else
{
while((u4_start_code_found == 0) && (ps_dec->s_bit_stream.u4_offset < ps_dec->s_bit_stream.u4_max_offset))
{
u4_next_bits = impeg2d_bit_stream_nxt(ps_stream,START_CODE_LEN);
if(impeg2d_bit_stream_nxt(ps_stream,START_CODE_LEN) == SEQUENCE_HEADER_CODE)
{
if(ps_dec->s_bit_stream.u4_offset < ps_dec->s_bit_stream.u4_max_offset)
{
e_error = impeg2d_dec_seq_hdr(ps_dec);
if ((IMPEG2D_ERROR_CODES_T)IVD_ERROR_NONE != e_error)
{
return e_error;
}
u4_start_code_found = 0;
}
else
{
return IMPEG2D_BITSTREAM_BUFF_EXCEEDED_ERR;
}
}
else if((ps_dec->s_bit_stream.u4_offset < ps_dec->s_bit_stream.u4_max_offset) && (u4_next_bits == EXTENSION_START_CODE || u4_next_bits == USER_DATA_START_CODE))
{
impeg2d_flush_ext_and_user_data(ps_dec);
u4_start_code_found = 0;
}
else if ((impeg2d_bit_stream_nxt(ps_stream,START_CODE_LEN) == GOP_START_CODE)
&& (ps_dec->s_bit_stream.u4_offset < ps_dec->s_bit_stream.u4_max_offset))
{
impeg2d_dec_grp_of_pic_hdr(ps_dec);
impeg2d_flush_ext_and_user_data(ps_dec);
u4_start_code_found = 0;
}
else if ((impeg2d_bit_stream_nxt(ps_stream,START_CODE_LEN) == PICTURE_START_CODE)
&& (ps_dec->s_bit_stream.u4_offset < ps_dec->s_bit_stream.u4_max_offset))
{
e_error = impeg2d_dec_pic_hdr(ps_dec);
if ((IMPEG2D_ERROR_CODES_T)IVD_ERROR_NONE != e_error)
{
return e_error;
}
impeg2d_flush_ext_and_user_data(ps_dec);
impeg2d_pre_pic_dec_proc(ps_dec);
impeg2d_dec_pic_data(ps_dec);
impeg2d_post_pic_dec_proc(ps_dec);
u4_start_code_found = 1;
}
else
{
FLUSH_BITS(ps_dec->s_bit_stream.u4_offset, ps_dec->s_bit_stream.u4_buf, ps_dec->s_bit_stream.u4_buf_nxt, 8, ps_dec->s_bit_stream.pu4_buf_aligned);
}
impeg2d_next_start_code(ps_dec);
}
if((u4_start_code_found == 0) && (ps_dec->s_bit_stream.u4_offset > ps_dec->s_bit_stream.u4_max_offset))
{
return IMPEG2D_FRM_HDR_START_CODE_NOT_FOUND;
}
}
return (IMPEG2D_ERROR_CODES_T)IVD_ERROR_NONE;
}