| /****************************************************************************** |
| * |
| * 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" |
| |
| |
| /***************************************************************************** |
| * MPEG2 Constants for Parse Check |
| ******************************************************************************/ |
| #define MPEG2_MAX_FRAME_RATE_CODE 8 |
| |
| /****************************************************************************** |
| * 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; |
| ps_dec->u2_reinit_max_height = ps_dec->u2_vertical_size; |
| ps_dec->u2_reinit_max_width = ps_dec->u2_horizontal_size; |
| return 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); |
| if (ps_dec->u2_frame_rate_code > MPEG2_MAX_FRAME_RATE_CODE) |
| { |
| return IMPEG2D_FRM_HDR_DECODE_ERR; |
| } |
| /*------------------------------------------------------------------------*/ |
| /* 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; |
| } |
