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145 lines
4.9 KiB
145 lines
4.9 KiB
/*****************************************************************************
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* desc_22.h: ISO/IEC 13818-1 Descriptor 0x22 (FmxBufferSize 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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* - ISO/IEC 14496-1:2001(E) (MPEG-4 Systems)
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*/
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#ifndef __BITSTREAM_MPEG_DESC_22_H__
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#define __BITSTREAM_MPEG_DESC_22_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 0x22: FmxBufferSize descriptor
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*****************************************************************************/
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#define DESC22_HEADER_SIZE (DESC_HEADER_SIZE + 3)
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#define DESC22_ENTRY_SIZE 4
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static inline void desc22_init(uint8_t *p_desc)
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{
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desc_set_tag(p_desc, 0x22);
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desc_set_length(p_desc, DESC22_HEADER_SIZE - DESC_HEADER_SIZE);
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}
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static inline uint32_t desc22_get_default_buffer_size(const uint8_t *p_desc)
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{
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return (p_desc[2] << 16) | (p_desc[3] << 8) | p_desc[4];
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}
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static inline void desc22_set_default_buffer_size(uint8_t *p_desc, uint32_t i_default_buffer_size)
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{
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p_desc[2] = (i_default_buffer_size >> 16) & 0xff;
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p_desc[3] = (i_default_buffer_size >> 8) & 0xff;
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p_desc[4] = i_default_buffer_size & 0xff;
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}
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static inline uint8_t *desc22_get_entry(uint8_t *p_desc, uint8_t n)
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{
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uint8_t *p_desc_n = p_desc + DESC22_HEADER_SIZE + n * DESC22_ENTRY_SIZE;
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if (p_desc_n + DESC22_ENTRY_SIZE - p_desc
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> desc_get_length(p_desc) + DESC22_HEADER_SIZE)
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return NULL;
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return p_desc_n;
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}
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static inline uint8_t desc22n_get_flexmux_channel(const uint8_t *p_desc_n)
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{
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return p_desc_n[0];
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}
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static inline void desc22n_set_flexmux_channel(uint8_t *p_desc_n, uint8_t i_flexmux_channel)
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{
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p_desc_n[0] = i_flexmux_channel;
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}
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static inline uint32_t desc22n_get_flexmux_buffer_size(const uint8_t *p_desc_n)
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{
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return (p_desc_n[1] << 16) | (p_desc_n[2] << 8) | p_desc_n[3];
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}
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static inline void desc22n_set_flexmux_buffer_size(uint8_t *p_desc_n, uint32_t i_buffer_size)
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{
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p_desc_n[1] = (i_buffer_size >> 16) & 0xff;
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p_desc_n[2] = (i_buffer_size >> 8) & 0xff;
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p_desc_n[3] = i_buffer_size & 0xff;
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}
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static inline bool desc22_validate(const uint8_t *p_desc)
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{
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return ((desc_get_length(p_desc) - (DESC22_HEADER_SIZE - DESC_HEADER_SIZE))
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% DESC22_ENTRY_SIZE) == 0;
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}
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static inline void desc22_print(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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uint8_t n = 0;
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uint8_t *p_desc_n;
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switch (i_print_type) {
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case PRINT_XML:
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pf_print(opaque, "<FMX_BUFFER_SIZE_DESC default_buffer_size=\"%u\">",
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desc22_get_default_buffer_size(p_desc));
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break;
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default:
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pf_print(opaque, " - desc 22 fmx_buffer_size default_buffer_size=%u",
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desc22_get_default_buffer_size(p_desc));
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}
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while ((p_desc_n = desc22_get_entry(p_desc, n++)) != NULL) {
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switch (i_print_type) {
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case PRINT_XML:
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pf_print(opaque, "<FLEXMUX_BUFFER_DESC flexmux_channel=\"0x%02x\" buffer_size=\"%u\"/>",
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desc22n_get_flexmux_channel(p_desc_n),
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desc22n_get_flexmux_buffer_size(p_desc_n));
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break;
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default:
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pf_print(opaque, " - flexmux_channel=0x%02x buffer_size=%u",
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desc22n_get_flexmux_channel(p_desc_n),
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desc22n_get_flexmux_buffer_size(p_desc_n));
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}
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}
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if (i_print_type == PRINT_XML)
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pf_print(opaque, "</FMX_BUFFER_SIZE_DESC>");
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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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