/src/libmpeg2/decoder/impeg2d_decoder.c

Source
/******************************************************************************
 *
 * 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         : mpeg2dec_api_utils.c                                 */
/*                                                                           */
/*                                                                           */
/*  Description       : This file defines the API interface for MPEG2 Decoder*/
/*                                                                           */
/*  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)  */
/*         17 09 2007  Rajendra C Y       Creation                           */
/*                                                                           */
/*****************************************************************************/

/*****************************************************************************/
/* File Includes                                                             */
/*****************************************************************************/
/* System include files */

#include <stddef.h>
#include <stdio.h>
#include <string.h>

/* User include files */
#include "iv_datatypedef.h"
#include "iv.h"
#include "ivd.h"
#include "ithread.h"

#include "impeg2_job_queue.h"
#include "impeg2_macros.h"
#include "impeg2_buf_mgr.h"
#include "impeg2_disp_mgr.h"
#include "impeg2_defs.h"
#include "impeg2_platform_macros.h"
#include "impeg2_inter_pred.h"
#include "impeg2_idct.h"
#include "impeg2_format_conv.h"
#include "impeg2_mem_func.h"

#include "impeg2d.h"
#include "impeg2d_api.h"
#include "impeg2d_bitstream.h"
#include "impeg2d_debug.h"
#include "impeg2d_structs.h"
#include "impeg2d_mc.h"
#include "impeg2d_pic_proc.h"
#include "impeg2d_dec_hdr.h"

void impeg2d_next_start_code(dec_state_t *ps_dec);
void impeg2d_next_code(dec_state_t *ps_dec, UWORD32 u4_start_code_val);

/*****************************************************************************/
/*                                                                           */
/*  Function Name : impeg2d_dec_hdr                                      */
/*                                                                           */
/*  Description   :                                                          */
/*  Inputs        :                                                          */
/*  Globals       :                                                          */
/*  Processing    :                                                          */
/*  Outputs       :                                                          */
/*  Returns       :                                                          */
/*                                                                           */
/*  Issues        :                                                          */
/*                                                                           */
/*  Revision History:                                                        */
/*                                                                           */
/*         DD MM YYYY   Author(s)       Changes (Describe the changes made)  */
/*         17 09 2007  Rajendra C Y          Draft                           */
/*                                                                           */
/*****************************************************************************/
void impeg2d_dec_hdr(void *pv_dec,impeg2d_video_decode_ip_t *ps_ip,
                 impeg2d_video_decode_op_t *ps_op)
{

    UWORD32 u4_bits_read;
    dec_state_t *ps_dec;
    UWORD32 u4_size = ps_ip->s_ivd_video_decode_ip_t.u4_num_Bytes;

    ps_dec = (dec_state_t *)pv_dec;
    ps_op->s_ivd_video_decode_op_t.u4_error_code = 0;
    if (u4_size > MAX_BITSTREAM_BUFFER_SIZE)
    {
        u4_size = MAX_BITSTREAM_BUFFER_SIZE;
    }

    memcpy(ps_dec->pu1_input_buffer, ps_ip->s_ivd_video_decode_ip_t.pv_stream_buffer, u4_size);

    impeg2d_bit_stream_init(&(ps_dec->s_bit_stream), ps_dec->pu1_input_buffer,
        u4_size);

    {
        {
            IMPEG2D_ERROR_CODES_T e_error;
            e_error = impeg2d_process_video_header(ps_dec);
            if ((IMPEG2D_ERROR_CODES_T)IVD_ERROR_NONE != e_error)
            {
                ps_op->s_ivd_video_decode_op_t.u4_error_code    = e_error;

                u4_bits_read     = impeg2d_bit_stream_num_bits_read(&ps_dec->s_bit_stream);

                ps_op->s_ivd_video_decode_op_t.u4_num_bytes_consumed = u4_bits_read>> 3;
                if(ps_op->s_ivd_video_decode_op_t.u4_num_bytes_consumed > ps_ip->s_ivd_video_decode_ip_t.u4_num_Bytes)
                {
                    ps_op->s_ivd_video_decode_op_t.u4_num_bytes_consumed = ps_ip->s_ivd_video_decode_ip_t.u4_num_Bytes;
                }
                if(ps_op->s_ivd_video_decode_op_t.u4_error_code == 0)
                    ps_op->s_ivd_video_decode_op_t.u4_error_code = e_error;

                if (IMPEG2D_UNSUPPORTED_DIMENSIONS == e_error)
                {
                    ps_op->s_ivd_video_decode_op_t.u4_num_bytes_consumed = 0;
                    ps_dec->u2_header_done = 0;

                    ps_op->s_ivd_video_decode_op_t.u4_pic_ht = ps_dec->u2_reinit_max_height;
                    ps_op->s_ivd_video_decode_op_t.u4_pic_wd = ps_dec->u2_reinit_max_width;
                }
                impeg2d_next_code(ps_dec, SEQUENCE_HEADER_CODE);
                return;
            }
        }
        ps_op->s_ivd_video_decode_op_t.u4_pic_ht = ps_dec->u2_vertical_size;
        ps_op->s_ivd_video_decode_op_t.u4_pic_wd = ps_dec->u2_horizontal_size;

        ps_op->s_ivd_video_decode_op_t.e_pic_type            = IV_NA_FRAME;
        ps_op->s_ivd_video_decode_op_t.u4_error_code        = IV_SUCCESS;

        u4_bits_read     = impeg2d_bit_stream_num_bits_read(&ps_dec->s_bit_stream);
        ps_op->s_ivd_video_decode_op_t.u4_num_bytes_consumed = u4_bits_read>> 3;
        if(ps_op->s_ivd_video_decode_op_t.u4_num_bytes_consumed > ps_ip->s_ivd_video_decode_ip_t.u4_num_Bytes)
        {
            ps_op->s_ivd_video_decode_op_t.u4_num_bytes_consumed = ps_ip->s_ivd_video_decode_ip_t.u4_num_Bytes;
        }
        ps_op->s_ivd_video_decode_op_t.u4_frame_decoded_flag = 0;

        /* Set the stride */
        if (0 == ps_dec->u4_frm_buf_stride)
        {
            ps_dec->u4_frm_buf_stride = ps_dec->u2_horizontal_size;
        }
        /* MOD */
        ps_dec->u2_header_done = 1;

    }
}

/*****************************************************************************/
/*                                                                           */
/*  Function Name : impeg2d_dec_frm                                         */
/*                                                                           */
/*  Description   :                                                          */
/*  Inputs        :                                                          */
/*  Globals       :                                                          */
/*  Processing    :                                                          */
/*  Outputs       :                                                          */
/*  Returns       :                                                          */
/*                                                                           */
/*  Issues        :                                                          */
/*                                                                           */
/*  Revision History:                                                        */
/*                                                                           */
/*         DD MM YYYY   Author(s)       Changes (Describe the changes made)  */
/*         17 09 2007  Rajendra C Y          Draft                           */
/*                                                                           */
/*****************************************************************************/
void impeg2d_dec_frm(void *pv_dec,impeg2d_video_decode_ip_t *ps_ip,
                 impeg2d_video_decode_op_t *ps_op)
{


    stream_t *ps_stream;
    UWORD32 u4_size = ps_ip->s_ivd_video_decode_ip_t.u4_num_Bytes;

    dec_state_t *ps_dec;

    ps_dec = (dec_state_t *)pv_dec;
    ps_op->s_ivd_video_decode_op_t.u4_error_code = 0;
    ps_dec->i4_bytes_consumed = 0;
    ps_op->s_ivd_video_decode_op_t.u4_num_bytes_consumed = 0;

    IMPEG2D_FRM_NUM_SET();
    if (u4_size > MAX_BITSTREAM_BUFFER_SIZE)
    {
        u4_size = MAX_BITSTREAM_BUFFER_SIZE;
    }

    memcpy(ps_dec->pu1_input_buffer, ps_ip->s_ivd_video_decode_ip_t.pv_stream_buffer, u4_size);

    ps_dec->pu1_inp_bits_buf = ps_dec->pu1_input_buffer;

    ps_dec->u4_num_inp_bytes = u4_size;
    ps_stream  = &ps_dec->s_bit_stream;

    impeg2d_bit_stream_init(ps_stream, ps_dec->pu1_input_buffer, u4_size);

    /* @ */ /* Updating the bufferID */

    ps_dec->u4_xdmBufID     = ps_ip->s_ivd_video_decode_ip_t.u4_ts;

    {
        IMPEG2D_ERROR_CODES_T e_error;
        /* Process the Bitstream */
        e_error = impeg2d_process_video_bit_stream(ps_dec);
        if ((IMPEG2D_ERROR_CODES_T)IVD_ERROR_NONE != e_error)
        {
            ps_op->s_ivd_video_decode_op_t.u4_error_code    = e_error;

            if ((IMPEG2D_ERROR_CODES_T) IVD_RES_CHANGED == e_error)
            {
                ps_op->s_ivd_video_decode_op_t.u4_num_bytes_consumed = ps_dec->i4_bytes_consumed;
                ps_dec->u2_header_done = 0;
            }
            else if (IMPEG2D_UNSUPPORTED_DIMENSIONS == e_error)
            {
                ps_op->s_ivd_video_decode_op_t.u4_num_bytes_consumed = 0;
                ps_dec->u2_header_done = 0;

                ps_op->s_ivd_video_decode_op_t.u4_pic_ht = ps_dec->u2_reinit_max_height;
                ps_op->s_ivd_video_decode_op_t.u4_pic_wd = ps_dec->u2_reinit_max_width;
            }
            else
            {
                if(ps_dec->i4_num_cores > 1 && 0 != ps_dec->i4_bytes_consumed)
                {
                    /* If the number of bytes consumed has been updated by
                     * get_slice_pos function, then use that. Else, the bytes consumed is
                     * calculated from the offset. The bytes consumed for multi-thread runs
                     * is updated only into ps_dec->i4_bytes_consumed if the get_slice_pos
                     * function has been called. If that function has not run, then we have
                     * encountered an error but still have to consume the bytes in header
                     * decode, etc.
                     */
                    ps_op->s_ivd_video_decode_op_t.u4_num_bytes_consumed = ps_dec->i4_bytes_consumed;
                }
                else
                {
                    ps_op->s_ivd_video_decode_op_t.u4_num_bytes_consumed = (ps_dec->s_bit_stream.u4_offset + 7) >> 3;
                    ps_op->s_ivd_video_decode_op_t.u4_num_bytes_consumed -= ((size_t)ps_dec->s_bit_stream.pv_bs_buf & 3);
                }

                if(ps_op->s_ivd_video_decode_op_t.u4_num_bytes_consumed
                                > ps_ip->s_ivd_video_decode_ip_t.u4_num_Bytes)
                {
                    ps_op->s_ivd_video_decode_op_t.u4_num_bytes_consumed =
                                    ps_ip->s_ivd_video_decode_ip_t.u4_num_Bytes;
                }

                impeg2d_next_start_code(ps_dec);
            }

            if(ps_op->s_ivd_video_decode_op_t.u4_error_code == 0)
            {
                ps_op->s_ivd_video_decode_op_t.u4_error_code = e_error;
            }

            return;
        }
    }
    /**************************************************************************/
    /* Remove the bytes left till next start code is encountered              */
    /**************************************************************************/
    ps_op->s_ivd_video_decode_op_t.u4_error_code  = IV_SUCCESS;

    if(ps_dec->i4_num_cores > 1 && 0 != ps_dec->i4_bytes_consumed)
    {
        /* If the number of bytes consumed has been updated by
         * get_slice_pos function, then use that. Else, the bytes consumed is
         * calculated from the offset. The bytes consumed for multi-thread runs
         * is updated only into ps_dec->i4_bytes_consumed if the get_slice_pos
         * function has been called. If that function has not run, then we have
         * encountered an error but still have to consume the bytes in header
         * decode, etc.
         */
        ps_op->s_ivd_video_decode_op_t.u4_num_bytes_consumed = ps_dec->i4_bytes_consumed;
    }
    else
    {
        ps_op->s_ivd_video_decode_op_t.u4_num_bytes_consumed = (ps_dec->s_bit_stream.u4_offset + 7) >> 3;
        ps_op->s_ivd_video_decode_op_t.u4_num_bytes_consumed -= ((size_t)ps_dec->s_bit_stream.pv_bs_buf & 3);
    }
    if(ps_op->s_ivd_video_decode_op_t.u4_num_bytes_consumed > ps_ip->s_ivd_video_decode_ip_t.u4_num_Bytes)
    {
        ps_op->s_ivd_video_decode_op_t.u4_num_bytes_consumed = ps_ip->s_ivd_video_decode_ip_t.u4_num_Bytes;
    }
    ps_op->s_ivd_video_decode_op_t.u4_pic_ht = ps_dec->u2_vertical_size;
    ps_op->s_ivd_video_decode_op_t.u4_pic_wd = ps_dec->u2_horizontal_size;

        switch(ps_dec->e_pic_type)
        {
        case I_PIC :
            ps_op->s_ivd_video_decode_op_t.e_pic_type = IV_I_FRAME;
            break;

        case P_PIC:
            ps_op->s_ivd_video_decode_op_t.e_pic_type = IV_P_FRAME;
            break;

        case B_PIC:
            ps_op->s_ivd_video_decode_op_t.e_pic_type = IV_B_FRAME;
            break;

        case D_PIC:
            ps_op->s_ivd_video_decode_op_t.e_pic_type = IV_I_FRAME;
            break;

        default :
            ps_op->s_ivd_video_decode_op_t.e_pic_type = IV_FRAMETYPE_DEFAULT;
            break;
        }

        ps_op->s_ivd_video_decode_op_t.u4_frame_decoded_flag = ps_dec->i4_frame_decoded;
        ps_op->s_ivd_video_decode_op_t.u4_new_seq = 0;
        ps_op->s_ivd_video_decode_op_t.u4_error_code = ps_dec->u4_error_code;


}

Coverage Report

Created: 2026-02-26 07:02

Line	Count	Source
1		/******************************************************************************
2		*
3		* Copyright (C) 2015 The Android Open Source Project
4		*
5		* Licensed under the Apache License, Version 2.0 (the "License");
6		* you may not use this file except in compliance with the License.
7		* You may obtain a copy of the License at:
8		*
9		* http://www.apache.org/licenses/LICENSE-2.0
10		*
11		* Unless required by applicable law or agreed to in writing, software
12		* distributed under the License is distributed on an "AS IS" BASIS,
13		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14		* See the License for the specific language governing permissions and
15		* limitations under the License.
16		*
17		*****************************************************************************
18		* Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
19		*/
20		/*****************************************************************************/
21		/* */
22		/* File Name : mpeg2dec_api_utils.c */
23		/* */
24		/* */
25		/* Description : This file defines the API interface for MPEG2 Decoder*/
26		/* */
27		/* List of Functions : <List the functions defined in this file> */
28		/* */
29		/* Issues / Problems : None */
30		/* */
31		/* Revision History : */
32		/* */
33		/* DD MM YYYY Author(s) Changes (Describe the changes made) */
34		/* 17 09 2007 Rajendra C Y Creation */
35		/* */
36		/*****************************************************************************/
37
38		/*****************************************************************************/
39		/* File Includes */
40		/*****************************************************************************/
41		/* System include files */
42
43		#include <stddef.h>
44		#include <stdio.h>
45		#include <string.h>
46
47		/* User include files */
48		#include "iv_datatypedef.h"
49		#include "iv.h"
50		#include "ivd.h"
51		#include "ithread.h"
52
53		#include "impeg2_job_queue.h"
54		#include "impeg2_macros.h"
55		#include "impeg2_buf_mgr.h"
56		#include "impeg2_disp_mgr.h"
57		#include "impeg2_defs.h"
58		#include "impeg2_platform_macros.h"
59		#include "impeg2_inter_pred.h"
60		#include "impeg2_idct.h"
61		#include "impeg2_format_conv.h"
62		#include "impeg2_mem_func.h"
63
64		#include "impeg2d.h"
65		#include "impeg2d_api.h"
66		#include "impeg2d_bitstream.h"
67		#include "impeg2d_debug.h"
68		#include "impeg2d_structs.h"
69		#include "impeg2d_mc.h"
70		#include "impeg2d_pic_proc.h"
71		#include "impeg2d_dec_hdr.h"
72
73		void impeg2d_next_start_code(dec_state_t *ps_dec);
74		void impeg2d_next_code(dec_state_t *ps_dec, UWORD32 u4_start_code_val);
75
76		/*****************************************************************************/
77		/* */
78		/* Function Name : impeg2d_dec_hdr */
79		/* */
80		/* Description : */
81		/* Inputs : */
82		/* Globals : */
83		/* Processing : */
84		/* Outputs : */
85		/* Returns : */
86		/* */
87		/* Issues : */
88		/* */
89		/* Revision History: */
90		/* */
91		/* DD MM YYYY Author(s) Changes (Describe the changes made) */
92		/* 17 09 2007 Rajendra C Y Draft */
93		/* */
94		/*****************************************************************************/
95		void impeg2d_dec_hdr(void pv_dec,impeg2d_video_decode_ip_t ps_ip,
96		impeg2d_video_decode_op_t *ps_op)
97	18.0k	{
98
99	18.0k	UWORD32 u4_bits_read;
100	18.0k	dec_state_t *ps_dec;
101	18.0k	UWORD32 u4_size = ps_ip->s_ivd_video_decode_ip_t.u4_num_Bytes;
102
103	18.0k	ps_dec = (dec_state_t *)pv_dec;
104	18.0k	ps_op->s_ivd_video_decode_op_t.u4_error_code = 0;
105	18.0k	if (u4_size > MAX_BITSTREAM_BUFFER_SIZE)
106	0	{
107	0	u4_size = MAX_BITSTREAM_BUFFER_SIZE;
108	0	}
109
110	18.0k	memcpy(ps_dec->pu1_input_buffer, ps_ip->s_ivd_video_decode_ip_t.pv_stream_buffer, u4_size);
111
112	18.0k	impeg2d_bit_stream_init(&(ps_dec->s_bit_stream), ps_dec->pu1_input_buffer,
113	18.0k	u4_size);
114
115	18.0k	{
116	18.0k	{
117	18.0k	IMPEG2D_ERROR_CODES_T e_error;
118	18.0k	e_error = impeg2d_process_video_header(ps_dec);
119	18.0k	if ((IMPEG2D_ERROR_CODES_T)IVD_ERROR_NONE != e_error)
120	10.1k	{
121	10.1k	ps_op->s_ivd_video_decode_op_t.u4_error_code = e_error;
122
123	10.1k	u4_bits_read = impeg2d_bit_stream_num_bits_read(&ps_dec->s_bit_stream);
124
125	10.1k	ps_op->s_ivd_video_decode_op_t.u4_num_bytes_consumed = u4_bits_read>> 3;
126	10.1k	if(ps_op->s_ivd_video_decode_op_t.u4_num_bytes_consumed > ps_ip->s_ivd_video_decode_ip_t.u4_num_Bytes)
127	1.25k	{
128	1.25k	ps_op->s_ivd_video_decode_op_t.u4_num_bytes_consumed = ps_ip->s_ivd_video_decode_ip_t.u4_num_Bytes;
129	1.25k	}
130	10.1k	if(ps_op->s_ivd_video_decode_op_t.u4_error_code == 0)
131	0	ps_op->s_ivd_video_decode_op_t.u4_error_code = e_error;
132
133	10.1k	if (IMPEG2D_UNSUPPORTED_DIMENSIONS == e_error)
134	6.94k	{
135	6.94k	ps_op->s_ivd_video_decode_op_t.u4_num_bytes_consumed = 0;
136	6.94k	ps_dec->u2_header_done = 0;
137
138	6.94k	ps_op->s_ivd_video_decode_op_t.u4_pic_ht = ps_dec->u2_reinit_max_height;
139	6.94k	ps_op->s_ivd_video_decode_op_t.u4_pic_wd = ps_dec->u2_reinit_max_width;
140	6.94k	}
141	10.1k	impeg2d_next_code(ps_dec, SEQUENCE_HEADER_CODE);
142	10.1k	return;
143	10.1k	}
144	18.0k	}
145	7.84k	ps_op->s_ivd_video_decode_op_t.u4_pic_ht = ps_dec->u2_vertical_size;
146	7.84k	ps_op->s_ivd_video_decode_op_t.u4_pic_wd = ps_dec->u2_horizontal_size;
147
148	7.84k	ps_op->s_ivd_video_decode_op_t.e_pic_type = IV_NA_FRAME;
149	7.84k	ps_op->s_ivd_video_decode_op_t.u4_error_code = IV_SUCCESS;
150
151	7.84k	u4_bits_read = impeg2d_bit_stream_num_bits_read(&ps_dec->s_bit_stream);
152	7.84k	ps_op->s_ivd_video_decode_op_t.u4_num_bytes_consumed = u4_bits_read>> 3;
153	7.84k	if(ps_op->s_ivd_video_decode_op_t.u4_num_bytes_consumed > ps_ip->s_ivd_video_decode_ip_t.u4_num_Bytes)
154	1.57k	{
155	1.57k	ps_op->s_ivd_video_decode_op_t.u4_num_bytes_consumed = ps_ip->s_ivd_video_decode_ip_t.u4_num_Bytes;
156	1.57k	}
157	7.84k	ps_op->s_ivd_video_decode_op_t.u4_frame_decoded_flag = 0;
158
159		/* Set the stride */
160	7.84k	if (0 == ps_dec->u4_frm_buf_stride)
161	7.84k	{
162	7.84k	ps_dec->u4_frm_buf_stride = ps_dec->u2_horizontal_size;
163	7.84k	}
164		/* MOD */
165	7.84k	ps_dec->u2_header_done = 1;
166
167	7.84k	}
168	7.84k	}
169
170		/*****************************************************************************/
171		/* */
172		/* Function Name : impeg2d_dec_frm */
173		/* */
174		/* Description : */
175		/* Inputs : */
176		/* Globals : */
177		/* Processing : */
178		/* Outputs : */
179		/* Returns : */
180		/* */
181		/* Issues : */
182		/* */
183		/* Revision History: */
184		/* */
185		/* DD MM YYYY Author(s) Changes (Describe the changes made) */
186		/* 17 09 2007 Rajendra C Y Draft */
187		/* */
188		/*****************************************************************************/
189		void impeg2d_dec_frm(void pv_dec,impeg2d_video_decode_ip_t ps_ip,
190		impeg2d_video_decode_op_t *ps_op)
191	43.9k	{
192
193
194	43.9k	stream_t *ps_stream;
195	43.9k	UWORD32 u4_size = ps_ip->s_ivd_video_decode_ip_t.u4_num_Bytes;
196
197	43.9k	dec_state_t *ps_dec;
198
199	43.9k	ps_dec = (dec_state_t *)pv_dec;
200	43.9k	ps_op->s_ivd_video_decode_op_t.u4_error_code = 0;
201	43.9k	ps_dec->i4_bytes_consumed = 0;
202	43.9k	ps_op->s_ivd_video_decode_op_t.u4_num_bytes_consumed = 0;
203
204	43.9k	IMPEG2D_FRM_NUM_SET();
205	43.9k	if (u4_size > MAX_BITSTREAM_BUFFER_SIZE)
206	0	{
207	0	u4_size = MAX_BITSTREAM_BUFFER_SIZE;
208	0	}
209
210	43.9k	memcpy(ps_dec->pu1_input_buffer, ps_ip->s_ivd_video_decode_ip_t.pv_stream_buffer, u4_size);
211
212	43.9k	ps_dec->pu1_inp_bits_buf = ps_dec->pu1_input_buffer;
213
214	43.9k	ps_dec->u4_num_inp_bytes = u4_size;
215	43.9k	ps_stream = &ps_dec->s_bit_stream;
216
217	43.9k	impeg2d_bit_stream_init(ps_stream, ps_dec->pu1_input_buffer, u4_size);
218
219		/* @ / / Updating the bufferID */
220
221	43.9k	ps_dec->u4_xdmBufID = ps_ip->s_ivd_video_decode_ip_t.u4_ts;
222
223	43.9k	{
224	43.9k	IMPEG2D_ERROR_CODES_T e_error;
225		/* Process the Bitstream */
226	43.9k	e_error = impeg2d_process_video_bit_stream(ps_dec);
227	43.9k	if ((IMPEG2D_ERROR_CODES_T)IVD_ERROR_NONE != e_error)
228	16.0k	{
229	16.0k	ps_op->s_ivd_video_decode_op_t.u4_error_code = e_error;
230
231	16.0k	if ((IMPEG2D_ERROR_CODES_T) IVD_RES_CHANGED == e_error)
232	1.71k	{
233	1.71k	ps_op->s_ivd_video_decode_op_t.u4_num_bytes_consumed = ps_dec->i4_bytes_consumed;
234	1.71k	ps_dec->u2_header_done = 0;
235	1.71k	}
236	14.3k	else if (IMPEG2D_UNSUPPORTED_DIMENSIONS == e_error)
237	2.35k	{
238	2.35k	ps_op->s_ivd_video_decode_op_t.u4_num_bytes_consumed = 0;
239	2.35k	ps_dec->u2_header_done = 0;
240
241	2.35k	ps_op->s_ivd_video_decode_op_t.u4_pic_ht = ps_dec->u2_reinit_max_height;
242	2.35k	ps_op->s_ivd_video_decode_op_t.u4_pic_wd = ps_dec->u2_reinit_max_width;
243	2.35k	}
244	12.0k	else
245	12.0k	{
246	12.0k	if(ps_dec->i4_num_cores > 1 && 0 != ps_dec->i4_bytes_consumed)
247	3.66k	{
248		/* If the number of bytes consumed has been updated by
249		* get_slice_pos function, then use that. Else, the bytes consumed is
250		* calculated from the offset. The bytes consumed for multi-thread runs
251		* is updated only into ps_dec->i4_bytes_consumed if the get_slice_pos
252		* function has been called. If that function has not run, then we have
253		* encountered an error but still have to consume the bytes in header
254		* decode, etc.
255		*/
256	3.66k	ps_op->s_ivd_video_decode_op_t.u4_num_bytes_consumed = ps_dec->i4_bytes_consumed;
257	3.66k	}
258	8.34k	else
259	8.34k	{
260	8.34k	ps_op->s_ivd_video_decode_op_t.u4_num_bytes_consumed = (ps_dec->s_bit_stream.u4_offset + 7) >> 3;
261	8.34k	ps_op->s_ivd_video_decode_op_t.u4_num_bytes_consumed -= ((size_t)ps_dec->s_bit_stream.pv_bs_buf & 3);
262	8.34k	}
263
264	12.0k	if(ps_op->s_ivd_video_decode_op_t.u4_num_bytes_consumed
265	12.0k	> ps_ip->s_ivd_video_decode_ip_t.u4_num_Bytes)
266	723	{
267	723	ps_op->s_ivd_video_decode_op_t.u4_num_bytes_consumed =
268	723	ps_ip->s_ivd_video_decode_ip_t.u4_num_Bytes;
269	723	}
270
271	12.0k	impeg2d_next_start_code(ps_dec);
272	12.0k	}
273
274	16.0k	if(ps_op->s_ivd_video_decode_op_t.u4_error_code == 0)
275	0	{
276	0	ps_op->s_ivd_video_decode_op_t.u4_error_code = e_error;
277	0	}
278
279	16.0k	return;
280	16.0k	}
281	43.9k	}
282		/**************************************************************************/
283		/* Remove the bytes left till next start code is encountered */
284		/**************************************************************************/
285	27.8k	ps_op->s_ivd_video_decode_op_t.u4_error_code = IV_SUCCESS;
286
287	27.8k	if(ps_dec->i4_num_cores > 1 && 0 != ps_dec->i4_bytes_consumed)
288	26.5k	{
289		/* If the number of bytes consumed has been updated by
290		* get_slice_pos function, then use that. Else, the bytes consumed is
291		* calculated from the offset. The bytes consumed for multi-thread runs
292		* is updated only into ps_dec->i4_bytes_consumed if the get_slice_pos
293		* function has been called. If that function has not run, then we have
294		* encountered an error but still have to consume the bytes in header
295		* decode, etc.
296		*/
297	26.5k	ps_op->s_ivd_video_decode_op_t.u4_num_bytes_consumed = ps_dec->i4_bytes_consumed;
298	26.5k	}
299	1.37k	else
300	1.37k	{
301	1.37k	ps_op->s_ivd_video_decode_op_t.u4_num_bytes_consumed = (ps_dec->s_bit_stream.u4_offset + 7) >> 3;
302	1.37k	ps_op->s_ivd_video_decode_op_t.u4_num_bytes_consumed -= ((size_t)ps_dec->s_bit_stream.pv_bs_buf & 3);
303	1.37k	}
304	27.8k	if(ps_op->s_ivd_video_decode_op_t.u4_num_bytes_consumed > ps_ip->s_ivd_video_decode_ip_t.u4_num_Bytes)
305	666	{
306	666	ps_op->s_ivd_video_decode_op_t.u4_num_bytes_consumed = ps_ip->s_ivd_video_decode_ip_t.u4_num_Bytes;
307	666	}
308	27.8k	ps_op->s_ivd_video_decode_op_t.u4_pic_ht = ps_dec->u2_vertical_size;
309	27.8k	ps_op->s_ivd_video_decode_op_t.u4_pic_wd = ps_dec->u2_horizontal_size;
310
311	27.8k	switch(ps_dec->e_pic_type)
312	27.8k	{
313	7.74k	case I_PIC :
314	7.74k	ps_op->s_ivd_video_decode_op_t.e_pic_type = IV_I_FRAME;
315	7.74k	break;
316
317	5.58k	case P_PIC:
318	5.58k	ps_op->s_ivd_video_decode_op_t.e_pic_type = IV_P_FRAME;
319	5.58k	break;
320
321	5.91k	case B_PIC:
322	5.91k	ps_op->s_ivd_video_decode_op_t.e_pic_type = IV_B_FRAME;
323	5.91k	break;
324
325	8.51k	case D_PIC:
326	8.51k	ps_op->s_ivd_video_decode_op_t.e_pic_type = IV_I_FRAME;
327	8.51k	break;
328
329	142	default :
330	142	ps_op->s_ivd_video_decode_op_t.e_pic_type = IV_FRAMETYPE_DEFAULT;
331	142	break;
332	27.8k	}
333
334	27.8k	ps_op->s_ivd_video_decode_op_t.u4_frame_decoded_flag = ps_dec->i4_frame_decoded;
335	27.8k	ps_op->s_ivd_video_decode_op_t.u4_new_seq = 0;
336	27.8k	ps_op->s_ivd_video_decode_op_t.u4_error_code = ps_dec->u4_error_code;
337
338
339	27.8k	}