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118 lines
4.2 KiB
118 lines
4.2 KiB
/*****************************************************************************
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* desc_27.h: ISO/IEC 13818-1 Descriptor 0x27 (Metadata STD 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_27_H__
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#define __BITSTREAM_MPEG_DESC_27_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 0x27 (Metadata STD descriptor)
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*****************************************************************************/
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#define DESC27_HEADER_SIZE (DESC_HEADER_SIZE + 9)
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static inline void desc27_init(uint8_t *p_desc)
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{
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desc_set_tag(p_desc, 0x27);
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desc_set_length(p_desc, DESC27_HEADER_SIZE - DESC_HEADER_SIZE);
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}
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static inline bool desc27_validate(const uint8_t *p_desc)
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{
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return desc_get_length(p_desc) >= DESC27_HEADER_SIZE - DESC_HEADER_SIZE;
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}
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static inline uint32_t desc27_get_input_leak_rate(const uint8_t *p_desc)
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{
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return ((p_desc[2] & 0x3f) << 16) | (p_desc[3] << 8) | p_desc[4];
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}
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static inline void desc27_set_input_leak_rate(uint8_t *p_desc, uint32_t i_input_leak_rate)
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{
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p_desc[2] = ((i_input_leak_rate >> 16) & 0xff) | 0xc0;
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p_desc[3] = (i_input_leak_rate >> 8) & 0xff;
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p_desc[4] = i_input_leak_rate & 0xff;
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}
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static inline uint32_t desc27_get_buffer_size(const uint8_t *p_desc)
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{
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return ((p_desc[5] & 0x3f) << 16) | (p_desc[6] << 8) | p_desc[7];
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}
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static inline void desc27_set_buffer_size(uint8_t *p_desc, uint32_t i_buffer_size)
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{
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p_desc[5] = ((i_buffer_size >> 16) & 0xff) | 0xc0;
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p_desc[6] = (i_buffer_size >> 8) & 0xff;
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p_desc[7] = i_buffer_size & 0xff;
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}
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static inline uint32_t desc27_get_output_leak_rate(const uint8_t *p_desc)
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{
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return ((p_desc[8] & 0x3f) << 16) | (p_desc[9] << 8) | p_desc[10];
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}
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static inline void desc27_set_output_leak_rate(uint8_t *p_desc, uint32_t i_output_leak_rate)
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{
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p_desc[ 8] = ((i_output_leak_rate >> 16) & 0xff) | 0xc0;
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p_desc[ 9] = (i_output_leak_rate >> 8) & 0xff;
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p_desc[10] = i_output_leak_rate & 0xff;
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}
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static inline void desc27_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, "<METADATA_STD_DESC input_leak_rate=\"%u\" buffer_size=\"%u\" output_leak_rate=\"%u\"/>",
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desc27_get_input_leak_rate(p_desc),
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desc27_get_buffer_size(p_desc),
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desc27_get_output_leak_rate(p_desc));
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break;
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default:
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pf_print(opaque," - desc 27 metadata_std input_leak_rate=%u buffer_size=%u output_leak_rate=%u",
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desc27_get_input_leak_rate(p_desc),
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desc27_get_buffer_size(p_desc),
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desc27_get_output_leak_rate(p_desc));
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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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