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271 lines
9.6 KiB
271 lines
9.6 KiB
/*****************************************************************************
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* desc_2a.h: ISO/IEC 13818-1 Descriptor 0x2a (AVC timing and HRD descriptor)
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*****************************************************************************
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* Copyright (C) 2011 Unix Solutions Ltd.
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*
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* Authors: Georgi Chorbadzhiyski <georgi@unixsol.org>
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject
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* to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*****************************************************************************/
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/*
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* Normative references:
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* - ISO/IEC 13818-1:2007(E) (MPEG-2 Systems)
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*/
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#ifndef __BITSTREAM_MPEG_DESC_2A_H__
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#define __BITSTREAM_MPEG_DESC_2A_H__
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#include <bitstream/common.h>
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#include <bitstream/mpeg/psi/descriptors.h>
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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/*****************************************************************************
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* Descriptor 0x2a (AVC timing and HRD descriptor)
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*****************************************************************************/
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#define DESC2A_HEADER_SIZE (DESC_HEADER_SIZE + 2)
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#define DESC2A_HEADER_SIZE2 (DESC_HEADER_SIZE + 2 + 5)
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#define DESC2A_HEADER_SIZE3 (DESC_HEADER_SIZE + 2 + 5 + 8)
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static inline void desc2a_init(uint8_t *p_desc)
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{
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desc_set_tag(p_desc, 0x2a);
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desc_set_length(p_desc, DESC2A_HEADER_SIZE - DESC_HEADER_SIZE);
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p_desc[2] = 0x7e;
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}
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static inline bool desc2a_get_hrd_management_valid_flag(const uint8_t *p_desc)
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{
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return (p_desc[2] & 0x80) == 0x80;
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}
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static inline void desc2a_set_hrd_management_valid_flag(uint8_t *p_desc, bool b_hrd_management_valid_flag)
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{
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p_desc[2] = b_hrd_management_valid_flag ? (p_desc[2] | 0x80) : (p_desc[2] &~ 0x80);
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}
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static inline bool desc2a_get_picture_and_timing_info_present(const uint8_t *p_desc)
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{
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return (p_desc[2] & 0x01) == 0x01;
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}
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static inline void desc2a_set_picture_and_timing_info_present(uint8_t *p_desc, bool b_picture_and_timing_info_present)
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{
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if (b_picture_and_timing_info_present)
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desc_set_length(p_desc, DESC2A_HEADER_SIZE2 - DESC_HEADER_SIZE);
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else
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desc_set_length(p_desc, DESC2A_HEADER_SIZE - DESC_HEADER_SIZE);
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p_desc[2] = b_picture_and_timing_info_present ? (p_desc[2] | 0x01) : (p_desc[2] &~ 0x01);
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}
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static inline bool desc2a_get_90khz_flag(const uint8_t *p_desc)
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{
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if (!desc2a_get_picture_and_timing_info_present(p_desc))
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return false;
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return (p_desc[3] & 0x80) == 0x80;
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}
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static inline void desc2a_set_90khz_flag(uint8_t *p_desc, bool b_90khz_flag)
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{
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if (!desc2a_get_picture_and_timing_info_present(p_desc))
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return;
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if (b_90khz_flag)
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desc_set_length(p_desc, DESC2A_HEADER_SIZE2 - DESC_HEADER_SIZE);
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else
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desc_set_length(p_desc, DESC2A_HEADER_SIZE3 - DESC_HEADER_SIZE);
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p_desc[3] = 0x7f;
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p_desc[3] = b_90khz_flag ? (p_desc[3] | 0x80) : (p_desc[3] &~ 0x80);
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}
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static inline uint32_t desc2a_get_N(const uint8_t *p_desc)
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{
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if (!desc2a_get_picture_and_timing_info_present(p_desc))
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return 0;
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if (desc2a_get_90khz_flag(p_desc))
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return 0;
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return (p_desc[4] << 24) | (p_desc[5] << 16) | (p_desc[6] << 8) | p_desc[7];
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}
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static inline void desc2a_set_N(uint8_t *p_desc, uint32_t i_N)
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{
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if (!desc2a_get_picture_and_timing_info_present(p_desc))
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return;
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if (desc2a_get_90khz_flag(p_desc))
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return;
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p_desc[4] = (i_N >> 24) & 0xff;
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p_desc[5] = (i_N >> 16) & 0xff;
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p_desc[6] = (i_N >> 8) & 0xff;
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p_desc[7] = i_N & 0xff;
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}
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static inline uint32_t desc2a_get_K(const uint8_t *p_desc)
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{
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if (!desc2a_get_picture_and_timing_info_present(p_desc))
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return 0;
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if (desc2a_get_90khz_flag(p_desc))
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return 0;
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return (p_desc[8] << 24) | (p_desc[9] << 16) | (p_desc[10] << 8) | p_desc[11];
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}
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static inline void desc2a_set_K(uint8_t *p_desc, uint32_t i_K)
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{
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if (!desc2a_get_picture_and_timing_info_present(p_desc))
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return;
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if (desc2a_get_90khz_flag(p_desc))
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return;
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p_desc[ 8] = (i_K >> 24) & 0xff;
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p_desc[ 9] = (i_K >> 16) & 0xff;
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p_desc[10] = (i_K >> 8) & 0xff;
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p_desc[11] = i_K & 0xff;
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}
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static inline uint32_t desc2a_get_num_units_in_tick(const uint8_t *p_desc)
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{
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uint8_t ofs;
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if (!desc2a_get_picture_and_timing_info_present(p_desc))
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return 0;
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ofs = desc2a_get_90khz_flag(p_desc) == 0 ? 12 : 4;
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return (p_desc[ofs+0] << 24) | (p_desc[ofs+1] << 16) | (p_desc[ofs+2] << 8) | p_desc[ofs+3];
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}
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static inline void desc2a_set_num_units_in_tick(uint8_t *p_desc, uint32_t i_num_units_in_tick)
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{
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uint8_t ofs;
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if (!desc2a_get_picture_and_timing_info_present(p_desc))
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return;
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ofs = desc2a_get_90khz_flag(p_desc) == 0 ? 12 : 4;
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p_desc[ofs+0] = (i_num_units_in_tick >> 24) & 0xff;
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p_desc[ofs+1] = (i_num_units_in_tick >> 16) & 0xff;
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p_desc[ofs+2] = (i_num_units_in_tick >> 8) & 0xff;
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p_desc[ofs+3] = i_num_units_in_tick & 0xff;
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}
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#define desc2a_init_offset \
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uint8_t ofs = 3; \
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do { \
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if (desc2a_get_picture_and_timing_info_present(p_desc)) \
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{ \
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ofs += 5; \
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if (desc2a_get_90khz_flag(p_desc) == false) \
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ofs += 8; \
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} \
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} while(0)
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static inline bool desc2a_get_fixed_frame_rate_flag(const uint8_t *p_desc)
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{
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desc2a_init_offset;
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return (p_desc[ofs] & 0x80) == 0x80;
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}
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static inline void desc2a_set_fixed_frame_rate_flag(uint8_t *p_desc, bool i_fixed_frame_rate_flag)
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{
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desc2a_init_offset;
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p_desc[ofs] |= 0x1f;
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p_desc[ofs] = i_fixed_frame_rate_flag ? (p_desc[ofs] | 0x80) : (p_desc[ofs] &~ 0x80);
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}
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static inline bool desc2a_get_temporal_poc_flag(const uint8_t *p_desc)
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{
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desc2a_init_offset;
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return (p_desc[ofs] & 0x40) == 0x40;
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}
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static inline void desc2a_set_temporal_poc_flag(uint8_t *p_desc, bool i_temporal_poc_flag)
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{
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desc2a_init_offset;
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p_desc[ofs] |= 0x1f;
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p_desc[ofs] = i_temporal_poc_flag ? (p_desc[ofs] | 0x40) : (p_desc[ofs] &~ 0x40);
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}
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static inline bool desc2a_get_picture_to_display_conversion_flag(const uint8_t *p_desc)
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{
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desc2a_init_offset;
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return (p_desc[ofs] & 0x20) == 0x20;
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}
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static inline void desc2a_set_picture_to_display_conversion_flag(uint8_t *p_desc, bool i_picture_to_display_conversion)
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{
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desc2a_init_offset;
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p_desc[ofs] |= 0x1f;
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p_desc[ofs] = i_picture_to_display_conversion ? (p_desc[ofs] | 0x20) : (p_desc[ofs] &~ 0x20);
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}
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#undef desc2a_init_offset
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static inline bool desc2a_validate(const uint8_t *p_desc)
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{
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uint8_t desc2a_header_size = DESC2A_HEADER_SIZE;
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if (desc2a_get_picture_and_timing_info_present(p_desc))
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{
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desc2a_header_size = DESC2A_HEADER_SIZE2;
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if (desc2a_get_90khz_flag(p_desc) == false)
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desc2a_header_size = DESC2A_HEADER_SIZE3;
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}
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return desc_get_length(p_desc) >= desc2a_header_size - DESC_HEADER_SIZE;
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}
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static inline void desc2a_print(const uint8_t *p_desc, f_print pf_print,
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void *opaque, print_type_t i_print_type)
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{
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switch (i_print_type) {
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case PRINT_XML:
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pf_print(opaque,"<AVC_TIMING_AND_HRD_DESC hrd_management_valid_flag=\"%u\""
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" picture_and_timing_info_present=\"%u\""
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" flag_90khz=\"%u\" N=\"%u\" K=\"%u\" num_units_in_tick=\"%u\""
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" fixed_frame_rate_flag=\"%u\" temporal_poc_flag=\"%u\""
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" picture_to_display_conversion_flag=\"%u\"/>",
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desc2a_get_hrd_management_valid_flag(p_desc),
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desc2a_get_picture_and_timing_info_present(p_desc),
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desc2a_get_90khz_flag(p_desc),
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desc2a_get_N(p_desc),
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desc2a_get_K(p_desc),
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desc2a_get_num_units_in_tick(p_desc),
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desc2a_get_fixed_frame_rate_flag(p_desc),
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desc2a_get_temporal_poc_flag(p_desc),
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desc2a_get_picture_to_display_conversion_flag(p_desc)
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);
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break;
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default:
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pf_print(opaque," - desc 2a avc_timing_and_hrd hrd_management_valid_flag=%u"
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" picture_and_timing_info_present=%u"
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" flag_90khz=%u N=%u K=%u num_units_in_tick=%u"
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" fixed_frame_rate_flag=%u temporal_poc_flag=%u"
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" picture_to_display_conversion_flag=%u",
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desc2a_get_hrd_management_valid_flag(p_desc),
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desc2a_get_picture_and_timing_info_present(p_desc),
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desc2a_get_90khz_flag(p_desc),
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desc2a_get_N(p_desc),
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desc2a_get_K(p_desc),
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desc2a_get_num_units_in_tick(p_desc),
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desc2a_get_fixed_frame_rate_flag(p_desc),
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desc2a_get_temporal_poc_flag(p_desc),
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desc2a_get_picture_to_display_conversion_flag(p_desc)
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);
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}
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}
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#ifdef __cplusplus
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}
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#endif
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#endif
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