| /****************************************************************************** |
| * |
| * 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; |
| |
| ps_dec = (dec_state_t *)pv_dec; |
| ps_op->s_ivd_video_decode_op_t.u4_error_code = 0; |
| |
| impeg2d_bit_stream_init(&(ps_dec->s_bit_stream),ps_ip->s_ivd_video_decode_ip_t.pv_stream_buffer, |
| ps_ip->s_ivd_video_decode_ip_t.u4_num_Bytes); |
| |
| { |
| { |
| 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; |
| /* 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(); |
| |
| ps_dec->pu1_inp_bits_buf = ps_ip->s_ivd_video_decode_ip_t.pv_stream_buffer; |
| ps_dec->u4_num_inp_bytes = u4_size; |
| ps_stream = &ps_dec->s_bit_stream; |
| |
| |
| impeg2d_bit_stream_init(ps_stream,ps_ip->s_ivd_video_decode_ip_t.pv_stream_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; |
| |
| |
| } |
