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/******************************************************************************
*
* 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
* ih264e_encode_header.h
*
* @brief
* This file contains structures and interface prototypes for h264 bitstream
* header encoding
*
* @author
* ittiam
*
* @remarks
* None
*
*******************************************************************************
*/
#ifndef IH264E_ENCODE_HEADER_H_
#define IH264E_ENCODE_HEADER_H_
/*****************************************************************************/
/* Function Macros */
/*****************************************************************************/
/**
******************************************************************************
* @brief Macro to put a code with specified number of bits into the
* bitstream
******************************************************************************
*/
#define PUT_BITS(ps_bitstrm, code_val, code_len, ret_val, syntax_string) \
{ \
ENTROPY_TRACE(syntax_string, code_val); \
ret_val = ih264e_put_bits((ps_bitstrm), (code_val), (code_len)); \
if(ret_val != IH264E_SUCCESS) \
{ \
return ret_val; \
} \
}
/**
******************************************************************************
* @brief Macro to put a code with specified number of bits into the
* bitstream using 0th order exponential Golomb encoding for
* signed numbers
******************************************************************************
*/
#define PUT_BITS_UEV(ps_bitstrm, code_val, ret_val, syntax_string) \
{ \
ENTROPY_TRACE(syntax_string, code_val); \
ret_val = ih264e_put_uev((ps_bitstrm), (code_val)); \
if(ret_val != IH264E_SUCCESS) \
{ \
return ret_val; \
} \
}
/**
******************************************************************************
* @brief Macro to put a code with specified number of bits into the
* bitstream using 0th order exponential Golomb encoding for
* signed numbers
******************************************************************************
*/
#define PUT_BITS_SEV(ps_bitstrm, code_val, ret_val, syntax_string) \
{ \
ENTROPY_TRACE(syntax_string, code_val); \
ret_val = ih264e_put_sev((ps_bitstrm), (code_val)); \
if(ret_val != IH264E_SUCCESS) \
{ \
return ret_val; \
} \
}
/**
******************************************************************************
* @brief Macro to set active entropy threads to zero and return
* in case of errors
******************************************************************************
*/
#define RETURN_ENTROPY_IF_ERROR(ps_codec, ps_entropy, ctxt_sel) \
if(ps_entropy->i4_error_code != IH264E_SUCCESS) \
{ \
DATA_SYNC(); \
return ps_entropy->i4_error_code; \
}
/*****************************************************************************/
/* Extern Function Declarations */
/*****************************************************************************/
/**
******************************************************************************
*
* @brief Generates SPS (Sequence Parameter Set)
*
* @par Description
* This function generates Sequence Parameter Set header as per the spec
*
* @param[in] ps_bitstrm
* pointer to bitstream context (handle)
*
* @param[in] ps_sps
* pointer to structure containing SPS data
*
* @return success or failure error code
*
******************************************************************************
*/
WORD32 ih264e_generate_sps
(
bitstrm_t *ps_bitstrm,
sps_t *ps_sps,
vui_t *ps_vui
);
/**
******************************************************************************
*
* @brief Generates PPS (Picture Parameter Set)
*
* @par Description
* Generate Picture Parameter Set as per Section 7.3.2.2
*
* @param[in] ps_bitstrm
* pointer to bitstream context (handle)
*
* @param[in] ps_pps
* pointer to structure containing PPS data
*
* @return success or failure error code
*
******************************************************************************
*/
WORD32 ih264e_generate_pps
(
bitstrm_t *ps_bitstrm,
pps_t *ps_pps,
sps_t *ps_sps
);
/**
******************************************************************************
*
* @brief Generates SEI (Supplemental Enhancement Information)
*
* @par Description
* This function generates Supplemental Enhancement Information header as per the spec
*
* @param[in] ps_bitstrm
* pointer to bitstream context (handle)
*
* @param[in] ps_sei
* pointer to structure containing SEI data
*
* @return success or failure error code
*
******************************************************************************
*/
IH264E_ERROR_T ih264e_generate_sei
(
bitstrm_t *ps_bitstrm,
sei_params_t *ps_sei,
UWORD32 u4_insert_per_idr
);
/**
******************************************************************************
*
* @brief Generates Slice Header
*
* @par Description
* Generate Slice Header as per Section 7.3.5.1
*
* @param[inout] ps_bitstrm
* pointer to bitstream context for generating slice header
*
* @param[in] ps_slice_hdr
* pointer to slice header params
*
* @param[in] ps_pps
* pointer to pps params referred by slice
*
* @param[in] ps_sps
* pointer to sps params referred by slice
*
* @param[out] ps_dup_bit_strm_ent_offset
* Bitstream struct to store bitstream state
*
* @param[out] pu4_first_slice_start_offset
* first slice offset is returned
*
* @return success or failure error code
*
******************************************************************************
*/
WORD32 ih264e_generate_slice_header
(
bitstrm_t *ps_bitstrm,
slice_header_t *ps_slice_hdr,
pps_t *ps_pps,
sps_t *ps_sps
);
/**
******************************************************************************
*
* @brief Populates sps structure
*
* @par Description
* Populates sps structure for its use in header generation
*
* @param[in] ps_codec
* pointer to encoder context
*
* @param[out] ps_sps
* pointer to sps params that needs to be populated
*
* @return success or failure error code
*
******************************************************************************
*/
IH264E_ERROR_T ih264e_populate_sps
(
codec_t *ps_codec,
sps_t *ps_sps
);
/**
******************************************************************************
*
* @brief Populates pps structure
*
* @par Description
* Populates pps structure for its use in header generation
*
* @param[in] ps_codec
* pointer to encoder context
*
* @param[out] ps_pps
* pointer to pps params that needs to be populated
*
* @return success or failure error code
*
******************************************************************************
*/
IH264E_ERROR_T ih264e_populate_pps
(
codec_t *ps_codec,
pps_t *ps_pps
);
/**
******************************************************************************
*
* @brief Populates slice header structure
*
* @par Description
* Populates slice header structure for its use in header generation
*
* @param[in] ps_proc
* pointer to proc context
*
* @param[out] ps_slice_hdr
* pointer to slice header structure that needs to be populated
*
* @param[in] ps_pps
* pointer to pps params structure referred by the slice
*
* @param[in] ps_sps
* pointer to sps params referred by the pps
*
* @return success or failure error code
*
******************************************************************************
*/
WORD32 ih264e_populate_slice_header
(
process_ctxt_t *ps_proc,
slice_header_t *ps_slice_hdr,
pps_t *ps_pps,
sps_t *ps_sps
);
/**
******************************************************************************
*
* @brief inserts FILLER Nal Unit.
*
* @par Description
* In constant bit rate rc mode, when the bits generated by the codec is
* underflowing the target bit rate, the encoder library inserts filler nal unit.
*
* @param[in] ps_bitstrm
* pointer to bitstream context (handle)
*
* @param[in] insert_fill_bytes
* Number of fill bytes to be inserted
*
* @return success or failure error code
*
******************************************************************************
*/
IH264E_ERROR_T ih264e_add_filler_nal_unit
(
bitstrm_t *ps_bitstrm,
WORD32 insert_fill_bytes
);
#endif //IH264E_ENCODE_HEADER_H_
|
